CN210534947U

CN210534947U - Smoke alarm and alarm system for ship

Info

Publication number: CN210534947U
Application number: CN201922117900.5U
Authority: CN
Inventors: 李勇; 肖道渲
Original assignee: Yangzhou Wanbang Electronic Co Ltd
Current assignee: Yangzhou Wanbang Electronic Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-05-15
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a smoke alarm for boats and ships, including being used for controlling the cargo hold and for long-range second fire alarm control ware, long-range second fire alarm control ware is located CO₂A chamber. The utility model also discloses a smoke alarm's alarm system for boats and ships, still including the third fire alarm controller who is used for controlling the cabin and the first fire alarm controller who is used for controlling the living area, third fire alarm controller and second fire alarm controller link to each other with first fire alarm controller respectively. The utility model places the first smoke detection box in the safe cargo hold,not only make first sampling pipeline installation not receive the space limitation, first sampling pipeline that box accessible pipe diameter is DN20~150 is surveyed to first smog, and first sampling pipeline is difficult for blockking up, and the air extraction volume is big and quick, and fire alarm response time is shorter.

Description

Smoke alarm and alarm system for ship

Technical Field

The utility model relates to a smoke alarm, alarm system for boats and ships belongs to boats and ships security protection technical field.

Background

Chinese patent application No. 201410171698.3, publication No. CN 104122369B, discloses a smoke detection unit, a smoke detection system and a smoke detection device, in which it is described that "there are smaller housings in the housing 4 of the smoke detection center 10, which housings correspond exactly to the suction hose 3, the three-way valve and the fire hose 14, respectively, and thus to the

cargo compartments

12, 13, 17, 18. A smoke detector is provided in each individual housing ". Because of the space limitation of the shell 4, the shell 4 has a smaller size, and the smoke detector arranged in the smaller shell does not allow a larger air volume to pass through, the diameter of the suction hose 3 is generally within DN25, the thinner suction hose 3 is easy to block, the air suction time is longer, and the fire alarm response time is longer, so that the fire situation cannot be quickly responded.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a smoke alarm for boats and ships is provided, this smoke alarm's sampling pipe gets into CO alone₂The smoke detection box is also arranged in the CO₂The room is surveyed the box with smog and is independently put in safe cargo hold, not only makes the sampling pipeline installation not receive the space limitation, and the box can be surveyed to smog can access to the sampling pipeline that the pipe diameter is up to DN150, and the sampling pipeline is difficult for taking place to block up to smog surveys box installation number and can be up to 120, is particularly useful for carrying out all-round, full overlay type ground detection to large vessel.

Further, the utility model provides a can carry out direct detection to airing exhaust of cargo hold, if there is the condition of a fire in the cargo hold, smoke alarm can make the smoke alarm for boats and ships who reacts fast.

Further, the utility model provides a smoke alarm for boats and ships whether detectable sampling pipe blockked up.

And simultaneously, the utility model discloses in provide a smoke alarm's for boats and ships alarm system, this alarm system has integrated the fire monitoring in living area, cargo hold, the three district in cabin, and the control box fault in three district does not influence each other to an available control box is reserve.

Further, the utility model provides a can carry out the alarm system of smoke alarm for boats and ships of unified control to the fire monitoring condition in three district.

And simultaneously, the utility model provides a smoke alarm's for boats and ships alarm method, the wiring mode of this method is safer to the sampling pipe is difficult for blockking up.

And simultaneously, the utility model provides a smoke alarm's for boats and ships alarm system's alarm method, this method can monitor the conflagration in living area, workspace, cargo hold, the three district in cabin simultaneously, fully ensures the safety of boats and ships.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model discloses a smoke alarm for boats and ships, this smoke alarm for boats and ships be cargo hold alarm system, and this cargo hold alarm system is including being used for controlling the cargo hold and for long-range second fire alarm controller, and second fire alarm controller is located CO₂A chamber; a second control panel is arranged on the surface of the second fire alarm controller;

the second fire alarm controller is respectively connected with the second power supply module, the second detector communication module, the relay output module and the I/O module;

the second fire alarm controller is connected with the CO₂A plurality of first smoke detection boxes of the chamber are connected;

still be provided with inlet port and venthole on the first smog detects the box, the venthole links to each other with the air inlet of fan unit, the inlet port links to each other with the gas outlet of first sampling pipeline, the air inlet of first sampling pipeline is located in the cargo hold, be provided with two at least air discharge fans on the fan unit, the air discharge fan with second fire alarm controller links to each other, and the integration has the motor on the air discharge fan, and the motor links to each other with second fire alarm controller.

A first smoke detector and an airflow pressure sensor are arranged in the first smoke detection box, and are respectively connected with the second control panel, the second detector communication module and the second fire alarm controller; the first smoke detection box is divided into two cavities by a partition plate, the first smoke detector is placed in one cavity, the airflow pressure sensor is placed in the other cavity, and a flow plate is arranged on the partition plate.

A filter element is arranged in the air inlet hole, the air inlet hole is communicated with a cavity for placing the first smoke detector, and the air outlet hole is communicated with a cavity for placing the airflow pressure sensor; the first smoke detector and the airflow pressure sensor are connected to a wiring board through wires, the wires of the first smoke detector penetrate through wire holes in the partition board and then are connected with the wiring board, and the wires of the airflow pressure sensor are also connected with the wiring board.

An air inlet of an airflow pressure sensor is arranged on the partition plate, a flow plate is movably covered on the air inlet of the airflow pressure sensor, a throttling hole is arranged on the flow plate, and the diameter of the throttling hole is adjusted according to the caliber of the first sampling pipelines with different diameters; the caliber of the first sampling pipeline is DN 20-150; the diameter of the throttling hole is 10-45 mm, and the aperture of the throttling hole is freely adjusted by the hole opener.

The first sampling pipeline is provided with a first electromagnetic valve which is a two-way valve, the first electromagnetic valve is close to one end of the cargo hold, the first sampling pipeline is communicated with a fire fighting discharge pipeline, the fire fighting discharge pipeline is provided with a second electromagnetic valve which is a two-way valve, and the fire fighting discharge pipeline and the CO discharge pipeline are communicated with each other₂The first electromagnetic valve and the second electromagnetic valve are respectively connected with a second fire alarm controller; all the first sampling pipelines are respectively connected to a first cargo hold, a second cargo hold, a third cargo hold, a fourth cargo hold and an n cargo hold.

A cargo compartment air duct is arranged in the cargo compartment, an air duct exhaust fan is arranged in the cargo compartment air duct, two ends of the air duct exhaust fan are respectively communicated with a lower pipeline and an upper pipeline, and a second smoke detection box is connected between the lower pipeline and the upper pipeline;

the cargo hold comprises a first cargo hold, a second cargo hold, a third cargo hold, a fourth cargo hold and an n cargo hold;

the first cargo hold, the second cargo hold, the third cargo hold, the fourth cargo hold and the n cargo hold are provided with cargo hold air ducts for ventilation;

the first cargo compartment, the second cargo compartment and the third cargo compartment are dangerous cargo compartments, the second smoke detection box of the dangerous cargo compartment is an explosion-proof air channel detection box, and an explosion-proof detector is arranged in the explosion-proof air channel detection box;

the double-wire lead loop comprises a first lead and a second lead which are respectively connected with a second fire alarm controller, the first lead is led into a cargo compartment air duct of a first cargo compartment after being connected with a first junction box and is connected with a plurality of explosion-proof air duct detection boxes, the first junction box comprises a safety isolator, a short-circuit isolator and a signal amplifier, and the short-circuit isolator is used for isolating a second smoke detection box connected to the signal amplifier of the first junction box and feeding back to the second fire alarm controller when short circuit occurs among the explosion-proof air duct detection boxes, so that the normal work of the second smoke detection box on a second junction box line is not influenced by the short circuit of devices on the first junction box line;

the first junction box is also connected with the input end of a second junction box, the second junction box comprises a safety isolator, a short-circuit isolator and a signal amplifier, and the output end of the second junction box is introduced into a cargo compartment air duct of a second cargo compartment and is connected with a plurality of explosion-proof air duct detection boxes;

similarly, the second junction box is also connected with the input end of a third junction box, the third junction box comprises a safety isolator, a short-circuit isolator and a signal amplifier, and the output end of the third junction box is introduced into a cargo compartment air duct of a third cargo compartment and is connected with a plurality of explosion-proof air duct detection boxes;

the third junction box is directly led into a cargo compartment air duct of a fourth cargo compartment through a first lead and connected with a plurality of common air duct detection boxes, and then is sequentially connected with the common air duct detection boxes in the cargo compartment air duct of the n cargo compartment in series, and a second lead is directly led into the cargo compartment air duct of the n cargo compartment and connected with the last common air duct detection box, so that a double-wire lead loop is formed;

each cargo compartment is internally provided with a cargo compartment smoke collector, a cargo compartment smoke sampling pipeline is connected with the cargo compartment smoke collector, the cargo compartment smoke sampling pipeline and a CO2 system share a fire-fighting discharge pipeline and a CO2 release port, and when a first smoke detection box or a second smoke detection box detects fire, the second fire alarm controller gives out sound and light alarm.

The utility model also discloses an alarm system of the smoke alarm for the ship, which comprises not only the cargo compartment alarm system but also an engine compartment alarm system, wherein the engine compartment alarm system comprises a third fire alarm controller for controlling the engine compartment;

a third control panel and a water mist release control panel are arranged on the surface of the third fire alarm controller; a third detector communication module, a third power supply module, a relay output module and an I/O module are arranged in the third fire alarm controller;

the third fire alarm controller is mainly used for detecting the cabin area, monitoring the main machine, the auxiliary machines, the oil distribution machine, the incineration boiler and the like;

the third fire alarm controller is connected with the flame detector and the second smoke detector;

a water level switch connecting wire and a water pump control panel connecting wire are connected to the third fire alarm controller, the water level switch connecting wire is connected with a water level switch in a water tower, the water pump control panel connecting wire is connected with a water pump control panel, the water pump control panel is connected with an electric switch, a pressure switch PS, a vacuum pressure gauge CG and a pressure measurement switch PG are arranged in the electric switch, the pressure switch PS is connected with the water pump control panel, the water pump control panel is also connected with a water pump motor, the water pump motor is connected with a water pump, one end of the water pump is connected with the water tower through a water inlet pipe, the other end of the water pump is connected with a water outlet main pipe, the water inlet pipe is connected with the vacuum pressure gauge CG, the water outlet main pipe is respectively connected with the pressure switch PS and the pressure measurement switch PG, and a filter is arranged, the main water outlet pipeline is provided with a third electromagnetic valve, the side wall of the main water outlet pipeline is also connected with an emptying pipeline, the emptying pipeline is provided with an emptying valve, the water outlet of the main water outlet pipeline is connected with a plurality of branch pipelines, the branch pipelines are provided with electric stop valves, the branch pipelines are led into the main machine, the auxiliary machine, the oil separator and the incineration boiler, the branch pipelines positioned in the main machine, the auxiliary machine, the oil separator and the incineration boiler are provided with a plurality of water mist nozzles, and all the electric stop valves are respectively connected with a water pump control panel; a flame detector, a second smoke detector, an audible and visual alarm and a local release button are arranged in the main machine, the auxiliary machine, the oil separator and the incineration boiler;

all flame detectors in the engine room are connected with the second smoke detector and then connected with a third fire alarm controller;

all the audible and visual alarms in the engine room are connected and then connected with a third fire alarm controller;

all local release buttons in the engine room are connected and then connected with a third fire alarm controller;

the third fire alarm controller is located at a fire station or a cab.

The utility model also discloses an alarm system of the smoke alarm for the ship, which comprises not only the cargo compartment alarm system and the engine compartment alarm system, but also a living area alarm system; the living area alarm system comprises a first fire alarm controller for controlling a living area, wherein a third fire alarm controller and a second fire alarm controller are respectively connected with the first fire alarm controller;

a first control panel is arranged on the surface of the first fire alarm controller; the first fire alarm controller is arranged in the cab and comprises a first detector communication module, a first power supply module, a relay output module and an I/O module;

the first fire alarm controller is connected with a third smoke detector, a temperature detector and a manual button which are positioned in a living area;

the first fire alarm controller is also connected with an address unit, a timer unit, a safety isolator, an audible and visual alarm, an electromagnetic valve and the like.

The second fire alarm controller, the third fire alarm controller and the fourth fire alarm controller connected with the first fire alarm controller are all connected with at least one repeater; or the second fire alarm controller, the third fire alarm controller, the first fire alarm controller and the fourth fire alarm controller can be respectively connected with at least one repeater.

In the utility model, the cargo compartment alarm system is connected with at least one repeater, and the cargo compartment alarm system can be used independently; the life zone alarm system can be connected with at least one repeater and can be used independently; the cabin alarm system can be connected with at least one repeater and can be used independently; the cargo compartment alarm system and the living area alarm system can be connected with at least one repeater together, and can be used in combination; the cabin alarm system and the living area alarm system can be connected with at least one repeater together, and can be used in combination; the cargo compartment alarm system and the cabin alarm system can be jointly connected with at least one repeater, and the cargo compartment alarm system and the cabin alarm system can be used in combination; the cargo compartment alarm system, the cabin alarm system and the living area alarm system can also be connected with at least one repeater together, and the cargo compartment alarm system, the cabin alarm system and the living area alarm system can be combined for use.

The utility model also discloses a marine smoke alarm's alarm method, including following step:

the method comprises the following steps: the CO is₂The indoor first smoke detector is used for detecting the smoke concentration in the air of the cargo hold, converting the detected smoke concentration value into a current pulse signal, sending the current pulse signal to the second fire alarm controller, carrying out comparative analysis on the collected current pulse signal by the second fire alarm controller, transmitting data to the second control panel for display, and controlling the audible and visual alarm integrated in the second control panel to give an alarm and output the alarm to the shipborne navigation data recorder VDR and output a switching value signal by the second fire alarm controller if the collected current pulse signal exceeds a set threshold value;

step two: the airflow pressure sensor is an airflow pressure switch, the airflow pressure switch is used for collecting the airflow in the first smoke detection box 5, when the airflow is less than 16MPa, the airflow pressure switch is in an automatic disconnection state, then the second fire alarm controller switches the other exhaust fan to work, a fault signal is sent to the audible and visual alarm, the audible and visual alarm gives an alarm, and whether the first sampling pipeline is blocked or the fan unit is in fault is checked; when the air flow is more than 30 MPa, the air flow pressure switch is in an automatic closing state, then the second fire alarm controller sends a signal to the second control panel, and the exhaust fan and the first sampling pipeline work normally;

step three: the first smoke detector in the cargo compartment air duct is used for collecting smoke concentration in gas discharged from a cargo compartment, converting the detected smoke concentration value into a current pulse signal, sending the current pulse signal to the second fire alarm controller, carrying out comparative analysis on the collected current pulse signal by the second fire alarm controller, transmitting data to the second control panel for display, and controlling the audible and visual alarm integrated in the second control panel to give an alarm and output the alarm to the ship-borne navigation data recorder VDR and output a switching value signal by the second fire alarm controller if the collected current pulse signal exceeds a set threshold value; then, beginning to investigate the smoke generating source;

step four: when the first smoke detector gives an alarm, the second fire alarm controller controls the first electromagnetic valve to be closed and controls the second electromagnetic valve to be opened simultaneously, and the CO is controlled₂The steel cylinder carries out fire extinguishing operation.

The utility model also discloses a marine smoke alarm's alarm system's alarm method, including following step:

the method comprises the following steps: the CO is₂The indoor first smoke detector is used for detecting the smoke concentration in the air of the cargo compartment, converting the detected smoke concentration value into a current pulse signal, sending the current pulse signal to the second fire alarm controller, the second fire alarm controller carries out comparative analysis on the collected current pulse signal and transmits data to the second control panel for display, and if the collected current pulse signal exceeds a set threshold value, the second smoke detector detects the smoke concentration in the air of the cargo compartment, transmits the current pulse signal to the second fire alarm controller, and transmits the data to the second control panel for displayThe fire alarm controller controls an audible and visual alarm integrated in the second control panel to give an alarm and output the alarm to the ship-borne navigation data recorder VDR and output a switching value signal;

step four: when the first smoke detector gives an alarm, the second fire alarm controller controls the first electromagnetic valve to be closed and controls the second electromagnetic valve to be opened simultaneously, and the CO is controlled₂The steel cylinder carries out fire extinguishing operation;

step five: the second smoke detector and the flame detector in the engine room are used for collecting flame or smoke concentration of each area of a main engine, an auxiliary engine, an oil separator and an incineration boiler in the engine room, converting the detected flame or smoke concentration value into a current pulse signal, sending the current pulse signal to the third fire alarm controller, carrying out comparative analysis on the collected current pulse signal by the third fire alarm controller, transmitting data to a third control panel for display, sending out sound and light alarm by the third fire alarm controller if the collected current pulse signal exceeds a set threshold value, controlling to start the water pump, the third electromagnetic valve and the corresponding electric stop valve, and controlling water spray nozzle spraying by a water spray release control panel of a person in a local release button or a fire control station; meanwhile, the audible and visual alarm gives an alarm and outputs the alarm to a ship-borne navigation data recorder VDR and outputs a switching value signal;

step six: the third smoke detector and the temperature detector in the living area are used for detecting whether the living area catches fire or not, if so, the audible and visual alarm integrated in the first control panel gives an alarm and outputs the alarm to the VDR shipborne navigation data recorder VDR and outputs a switching value signal;

step seven: the first fire alarm controller 23 may be used as a backup and status display for the second fire alarm controller 2 and the third fire alarm controller 21, or may be operated separately; the fourth fire alarm controller 34 serves as a standby controller on the ship, and when one of the second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 fails, the fourth fire alarm controller 34 is started; the second fire alarm controller 2, the third fire alarm controller 21, the first fire alarm controller 23 and the fourth fire alarm controller 34 may be respectively provided with at least one repeater for displaying information on each fire alarm controller, or the first fire alarm controller 23 or the fourth fire alarm controller 34 may be provided with at least one repeater for displaying fire conditions in living areas, working areas, cargo compartments and engine compartments.

The utility model has the advantages that:

1. the utility model discloses introduce CO alone with first sampling pipeline₂A first smoke detection box is also arranged in the CO₂The room is independently put first smog detection box in safe cargo hold, not only makes first sampling pipe installation not receive the space limitation, and first smog detection box accessible pipe diameter doesThe first sampling pipeline with a large caliber is not easy to block, the air suction quantity is large and rapid, and the fire alarm response time is short, so that a countermeasure for a fire situation can be rapidly taken; and the number of the first smoke detection boxes can reach 120, so that the smoke detection box is very suitable for carrying out all-around and full-coverage fire monitoring on large ships with more cargo holds.

2. The box continuous setting is surveyed with second smog in the cargo hold wind channel, and this box is surveyed to second smog directly monitors the pipeline end to the monitoring point is whole cargo hold, if the condition of a fire takes place for this cargo hold, and the smoke alarm in this box is surveyed to second smog can make the reaction fast, makes the utility model discloses the security performance is high.

3. The flow plate is added, so that the air flow rate in the smoke detection box can be adjusted, and false alarm of an air flow pressure switch is avoided.

4. The utility model discloses an alarm system has integrateed the fire monitoring in living area, cargo hold, the three district in cabin, and the fire alarm controller in three district has a fault and does not influence each other to available fire alarm controller is reserve, and the conflagration of an accessible master control panel to three district is unified and is monitored.

Drawings

Fig. 1 is a schematic structural diagram of an alarm system of the present invention;

FIG. 2 is a schematic view of the structure of the center cargo tank of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

FIG. 5 is a schematic view of the structure of the air duct of the center cargo tank of the present invention;

FIG. 6 is a schematic structural view of the smoke detection box of the present invention;

FIG. 7 is a sectional view taken along line A-A of FIG. 5;

FIG. 8 is a sectional view taken along line B-B of FIG. 5;

fig. 9 is a schematic structural view of a nacelle according to the present invention;

fig. 10 is a schematic structural view of a living area of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1

As shown in FIG. 2, the present embodiment discloses a smoke alarm for a ship, comprising a second remote fire alarm controller 2 for controlling a cargo hold 1, the second remote fire alarm controller 2 being located at the CO₂A chamber 4; a second control panel 3 is arranged on the surface of the second fire alarm controller 2;

the second fire alarm controller 2 in this embodiment is a main control unit, and the second control panel 3 has the following functions: liquid crystal display and indicator light display; an audible warning; operating a keyboard; engineering configuration and event storage; managing linkage control of external output; through other modules (such as the smoke detector 6, the airflow pressure sensor 7, the exhaust fan 11, the first electromagnetic valve 13, the second electromagnetic valve 15, the second smoke detection box 76 on the cargo compartment air duct 17 and the like) of the smoke alarm, the bus management is preferably double-line redundant communication, namely, a communication bus is adopted to connect two main control units (the two main control units are respectively No. 1 and No. 2, are mutually main and standby and can work independently) and other modules, various different states are processed, and the failure of one module can not cause system paralysis.

The second fire alarm controller 2 comprises a detector communication module, a second power supply module, a relay output module and an I/O module, and the number of the modules can be freely configured according to actual needs.

The second fire alarm controller 2 is respectively connected with the second power supply module, the second detector communication module, the relay output module and the I/O module;

the second power module in this embodiment may have three types of input power: AC110~220V, DC24V, DC24V battery (two).

The second fire alarm controller 2 in this embodiment is a main control unit, and the main control unit employs an NXP ARM processor and a mass storage. The main control unit can run in a single machine, and can also carry out redundancy configuration (comprising double main control units, communication between the units and power redundancy) so as to meet the requirement of safe port returning.

In this embodiment, the second power module is connected to a charging management module of the power supply, the charging management module is configured to charge the backup battery and manage switching of the input power supply, and the charging management module communicates with the second fire alarm controller 2 to report a parameter state of the power supply. In this embodiment, a fire display panel is provided on the second control panel 3. The second fire alarm controller 2 is also connected with an external communication module which is a VDR interface; the external communication module provides a repeater and is connected with an interface of the fire display panel for transmitting the fire transmitted by the fire display panel.

The second fire alarm controller 2 is connected with the CO₂A plurality of first smoke detection boxes 5 of the chamber 4 are connected;

the short-circuit isolator in this embodiment outputs DC24V or passive contacts to the outside; monitoring the state of the output line; and communicates with the second fire alarm controller 2 to receive the output command. If the second smoke detection box 76 is shorted, the short isolator places an isolation wire in the shorted position, allowing the entire two-wire loop 78 to operate normally. An air inlet hole 35 is formed in the first smoke detection box 5, the air inlet hole 35 is communicated with a first sampling pipeline 39, and the first sampling pipeline 39 is connected into the cargo hold 1;

as shown in fig. 6 and 8, a first smoke detector 6 and an airflow pressure sensor 7 are arranged in the first smoke detection box 5, and the first smoke detector 6 and the airflow pressure sensor 7 are respectively connected with the second control panel 3, the second detector communication module and the second fire alarm controller 2; the first smoke detection box 5 is divided into two cavities by a partition plate 8, the first smoke detector 6 is placed in one cavity, the airflow pressure sensor 7 is placed in the other cavity, and a flow plate 9 is arranged on the partition plate 8;

the first smoke detection box 5 is further provided with an air inlet hole 35 and an air outlet hole 36, the air outlet hole 36 is connected with an air inlet of the fan unit 10, the air inlet hole 35 is connected with an air outlet of the first sampling pipeline 39 through a flange, the air inlet of the first sampling pipeline 39 is located in the cargo compartment 1, the fan unit 10 is provided with at least two exhaust fans 11, the exhaust fans 11 are connected with the second fire alarm controller 2, the exhaust fans 11 are integrated with motors, and the motors are connected with the second fire alarm controller 2;

a filter element 37 is arranged in the air inlet hole 35, the air inlet hole 35 is communicated with a cavity for placing the first smoke detector 6, and the air outlet hole 36 is communicated with a cavity for placing the airflow pressure sensor 7; the first smoke detector 6 and the airflow pressure sensor 7 are connected to a terminal plate 38 through wires, the wires of the first smoke detector 6 are connected to the terminal plate 38 after passing through wire holes in the partition plate 8, and the wires of the airflow pressure sensor 7 are also connected to the terminal plate 38.

In this embodiment, one exhaust fan 11 is on standby, and the two exhaust fans 11 are switched by the second fire alarm controller 2 every 24 hours. The exhaust fan 11 delivers a sample of air from the first smoke detector 6 into the free air.

As shown in fig. 7, an air flow pressure sensor inlet is arranged on the partition plate 8, a flow plate 9 is movably covered on the air flow pressure sensor inlet, an orifice 12 is arranged on the flow plate 9, and the diameter of the orifice 12 is adjusted by sampling pipelines with different diameters.

The caliber of the first sampling pipeline is DN 20-150; the diameter of the orifice 12 is 10-45 mm, and the diameter of the orifice 12 can be freely adjusted by a hole opener.

The addition of the flow plate 9 in this embodiment allows the air flow rate inside the first smoke detection box 5 to be adjustable, thereby avoiding false alarms from the airflow pressure sensor 7.

A filter element 37 is integrated in the first smoke detection box 5 of the present embodiment, and the filter element 37 is a filter element for preventing the smoke detector 6 inside the first smoke detection box 5 from being excessively contaminated.

As shown in fig. 3, the first sampling pipe 39 is provided with a first electromagnetic valve 13, the first electromagnetic valve 13 is a two-way valve, and the two-way valve can be a manual, electric or pneumatic valve. A fire fighting discharge pipeline is communicated with the first sampling pipeline 39 of one end of the first electromagnetic valve 13 close to the cargo hold 114, a second electromagnetic valve 15 is arranged on the fire fighting discharge pipeline 14, the second electromagnetic valve 15 is a two-way valve, and the two-way valve can be a manual valve, an electric valve or a pneumatic valve. The fire fighting discharge pipe 14 and CO₂The steel cylinder 16 is connected, and the first electromagnetic valve 13 and the second electromagnetic valve 15 are respectively connected with the second fire alarm controller 2; all of the first sampling pipes 39 are connected to a first cargo tank 41, a second cargo tank 42, a third cargo tank 43, a fourth cargo tank 44, and an n cargo tank 45, respectively.

As shown in fig. 5, a cargo compartment air duct 17 is arranged in the cargo compartment 1, an air duct exhaust fan 40 is arranged in the cargo compartment air duct 17, two ends of the air duct exhaust fan 40 are respectively communicated with a lower pipeline 18 and an upper pipeline 19, a second smoke detection box 76 is connected between the lower pipeline 18 and the upper pipeline 19, and the second smoke detection box 76 has the same structure as the first smoke detection box 5.

In the embodiment, the arrangement that the cargo compartment air duct 17 is connected with the second smoke detection box 76, the second smoke detection box 76 directly monitors the duct end, the monitoring point is the whole cargo compartment 1, and if a fire occurs in the cargo compartment 1, the second smoke alarm 76 can quickly respond, so that the safety performance of the embodiment is high.

In this embodiment, the cargo tank 1 includes a first cargo tank 41, a second cargo tank 42, a third cargo tank 43, a fourth cargo tank 44 … …, and an n cargo tank 45.

In some cargo compartments, there is no cargo compartment air duct, but in this embodiment, the first cargo compartment 41, the second cargo compartment 42, the third cargo compartment 43, the fourth cargo compartment 44 … …, and the n cargo compartment 45 all have a cargo compartment air duct 17 for ventilation, in this embodiment, the first cargo compartment 41, the second cargo compartment 42, and the third cargo compartment 43 are dangerous cargo compartments, the second smoke detection box 76 in the dangerous cargo compartment is an explosion-proof air duct detection box 77, and an explosion-proof detector is installed in the explosion-proof air duct detection box 77.

In this embodiment, all of the second smoke detection boxes 76 are connected to the second fire alarm controller 2 by a two-wire loop 78, and the two-wire loop 78 communicates with the second fire alarm controller 2 to report the event.

Specifically, the two-wire loop 78 in this embodiment includes a first wire 46 and a second wire 47 respectively connected to the second fire alarm controller 2, the first wire 46 is connected to a first junction box 48 and then led into the cargo compartment air duct 17 of the first cargo compartment 41 and connected to the explosion-proof air duct detection boxes 77, the first junction box 48 contains therein a safety isolator, a short-circuit isolator and a signal amplifier, and the short-circuit isolator is used for isolating the second smoke detection box 76 connected to the signal amplifier thereof and feeding back the second smoke detection box 76 to the second fire alarm controller 2 when a short circuit occurs between the explosion-proof air duct detection boxes 77. Shorting the devices on the line of the first junction box 48 does not affect the proper operation of the second smoke detection box 76 on the line of the second junction box 50.

The safety isolator is a safety barrier, also called a safety retainer, which transmits electric signals between the safe cargo hold and the dangerous cargo hold in two directions and can limit the energy transfer from the dangerous cargo hold to the safe cargo hold caused by faults. The fire alarm controller of this embodiment ensures that the energy delivered to the second smoke detection box 76 through it is safe whether in a normal or fault condition.

As shown in fig. 4, each cargo hold 1 is provided with a cargo smoke collector 49 therein, a cargo smoke sampling pipe is connected to the cargo smoke collector 49, the cargo smoke sampling pipe and the CO2 system share the fire discharge pipe 14 and the CO2 discharge port, and when a fire is detected by the first smoke detection box 5 or the second smoke detection box 76, the second fire alarm controller gives an audible and visual alarm.

The first junction box 48 is also connected to the input of a second junction box 50, which second junction box 50 contains safety isolators, short-circuit isolators and signal amplifiers, and the output of the second junction box 50 is directed into the cargo compartment air duct 17 of cargo compartment number two 42 and connected to a plurality of explosion-proof air duct detection boxes 77.

Similarly, the second junction box 50 is also connected to the input end of a third junction box 51, the third junction box 51 contains a safety isolator, a short-circuit isolator and a signal amplifier, and the output end of the third junction box 51 is introduced into the cargo compartment air duct 17 of the third cargo compartment 43 and is connected to a plurality of explosion-proof air duct detection boxes 77.

In this embodiment, the cargo compartment number four 44 … … and the cargo compartment number n 45 are safe cargo compartments, the second smoke detection box 76 in the safe cargo compartment is the normal air duct detection box 52, and the normal air duct detection box 52 has no special requirements such as explosion prevention.

The third junction box 51 is directly led into the cargo compartment air duct 17 of the fourth cargo compartment 44 through the first lead wire 46 and is connected with a plurality of common air duct detection boxes 52, and then is sequentially connected with the common air duct detection boxes 52 in the cargo compartment air duct 17 of the n-number cargo compartment 45 in series, and the second lead wire 47 is directly led into the cargo compartment air duct 17 of the n-number cargo compartment 45 and is connected with the last common air duct detection box 52, so that a two-wire lead loop 78 is formed, and air monitoring in the cargo compartment air duct 17 is realized.

The embodiment also discloses an alarm method of the smoke alarm for the ship, which comprises the following steps:

the method comprises the following steps: the CO is₂The first smoke detector 6 in the chamber 4 is used for detecting the smoke concentration in the air in the cargo hold, converting the detected smoke concentration value into a current pulse signal (a communication protocol, a signal data agreement between a master machine and a slave machine), sending the current pulse signal to the second fire alarm controller 2, comparing and analyzing the collected current pulse signal by the second fire alarm controller 2, transmitting data to the second control panel 3 for display, and if the collected current pulse signal exceeds a set threshold value, controlling the audible and visual alarm integrated in the second control panel 3 by the second fire alarm controller 2 to give an alarm and output the alarm to the ship-borne navigation data recorder VDR and output a switching value signal;

step two: the airflow pressure sensor 7 is an airflow pressure switch, the airflow pressure switch is used for collecting the airflow in the first smoke detection box 5, when the airflow is smaller than 16MPa, the airflow pressure switch is in an automatic disconnection state, then the second fire alarm controller 2 switches the other exhaust fan 11 to work (only the airflow pressure sensors 7 in all the first smoke detection boxes 5 give an alarm, the second fire alarm controller 2 switches the other exhaust fan 11), and sends a fault signal to the audible and visual alarm, the audible and visual alarm gives an alarm, and whether the first sampling pipeline is blocked or the fan unit 10 is in fault is checked; when the air flow is greater than 30 MPa, the air flow pressure switch is in an automatic closing state, then the second fire alarm controller 2 sends a signal to the second control panel 3, and the exhaust fan 11 and the first sampling pipeline work normally;

step three: the first smoke detector 6 in the cargo compartment air duct 17 is used for collecting the smoke concentration in the gas exhausted from the cargo compartment 1, converting the detected smoke concentration value into a current pulse signal, sending the current pulse signal to the second fire alarm controller 2, comparing and analyzing the collected current pulse signal by the second fire alarm controller 2, transmitting data to the second control panel 3 for display, and if the collected current pulse signal exceeds a set threshold value, controlling the sound-light alarm integrated in the second control panel 3 by the second fire alarm controller 2 to give an alarm and output the alarm to the ship-borne navigation data recorder VDR and output a switching value signal; then, beginning to investigate the smoke generating source;

step four: when the first smoke detector 6 gives an alarm, the second fire alarm controller 2 controls the first electromagnetic valve 13 to be closed and controls the second electromagnetic valve 15 to be opened, and the CO is detected₂The cylinder 16 performs a fire extinguishing operation.

This embodiment introduces the first sampling pipe separately into the CO₂A chamber 4, a first smoke detection box 5 is also arranged at the CO₂The room also can independently put box 5 in safe cargo hold (cargo hold walkways) with first smog detection, not only makes first sampling pipe installation not receive the space limitation, and box 5 can be visited to first smog is the first sampling pipe of DN20~150 of pipe diameter, and the difficult emergence of first sampling pipe is blockked up to 5 installation numbers of box can be up to 120 to first smog, and the very suitable large vessel that carries on more to cargo hold 1 is all-round, carries out the fire monitoring with covering all the way.

The smoke alarm for a ship of this embodiment is a sampling smoke detection system, which fully complies with international standards and specifications, and a network of pipes simultaneously extracts air samples from a monitored cargo hold 1 and delivers them to a CO-located cargo hold₂A first smoke detection box 5 of the chamber 4 for monitoring, a network extinguishing system for carbon dioxide fires and a sampling smoke detection system as described aboveAnd when the first smoke detection box 5 detects a fire, the second fire alarm controller 2 closes the first electromagnetic valve 13 and simultaneously controls the second electromagnetic valve 15 to open, and CO is matched₂The cylinder 16 performs a fire extinguishing operation.

In addition, in the present embodiment, when the second smoke detection box 76 detects a fire after the current pulse signal exceeding the set threshold value is detected in the cargo compartment air passage 17 of the cargo compartment 1, the second fire alarm controller 2 issues an audible and visual alarm.

The embodiment allows connecting large pipelines of DN 20-150 to the CO₂The first smoke detection box 5 of the chamber, and thus the cargo compartment and the walkways, greatly reduces the amount of plumbing necessary. And the air samples are short in the pipe network, so that they can react quickly to the occurrence of smoke in the cargo hold 1.

Example 2

As shown in FIG. 1, the present embodiment discloses an alarm system of a smoke alarm for a ship, which includes a second remote fire alarm controller 2 for controlling a cargo hold 1, the second remote fire alarm controller 2 being located at a CO₂A chamber 4; a second control panel 3 is arranged on the surface of the second fire alarm controller 2;

the second fire alarm controller 2 in this embodiment is a main control unit, and the second control panel 3 has the following functions: liquid crystal display and indicator light display; an audible warning; operating a keyboard; engineering configuration and event storage; managing linkage control of external output; through other modules (such as the smoke detector 6, the airflow pressure sensor 7, the exhaust fan 11, the first electromagnetic valve 13, the second electromagnetic valve 15, the second smoke detection box 76 on the cargo compartment air duct 17 and the like) of the smoke alarm are managed through a bus, the bus management is preferably double-line redundant communication, namely, a communication bus is adopted to connect double-outlet double-inlet main control unit (which can normally work when a circuit is broken or opened in the communication bus, only part of the communication bus is affected, and the whole communication bus is not affected) and other modules, various different states are processed, and the fault of one module can not cause system breakdown.

In this embodiment, the second power module is connected to a charging management module of the power supply, the charging management module is configured to charge the backup battery and manage switching of the input power supply, and the charging management module communicates with the second fire alarm controller 2 to report a parameter state of the power supply. In this embodiment, a fire display panel is provided on the second control panel 3. The second fire alarm controller 2 is also connected with an external communication module, and the external communication module is provided with a VDR interface; the external communication module provides a repeater and is connected with an interface of the fire display panel for transmitting the fire transmitted by the fire display panel.

the first smoke detection box 5 is further provided with an air inlet hole 35 and an air outlet hole 36, the air outlet hole 36 is connected with an air inlet of the fan unit 10 through a flange and a pipeline, the air inlet hole 35 is connected with an air outlet of the first sampling pipeline 39 through a flange, the air inlet of the first sampling pipeline 39 is located in the cargo hold 1, the fan unit 10 is provided with at least two exhaust fans 11, the exhaust fans 11 are connected with the second fire alarm controller 2, the exhaust fans 11 are integrated with a motor, and the motor is connected with the second fire alarm controller 2;

As shown in fig. 3, the first sampling pipe 39 is provided with a first electromagnetic valve 13, the first electromagnetic valve 13 is a two-way valve, and the two-way valve can be a manual, electric or pneumatic valve. The first sampling pipeline 39, which is close to one end of the cargo hold 1, of the first electromagnetic valve 13 is communicated with a fire control discharge pipeline 14, a second electromagnetic valve 15 is arranged on the fire control discharge pipeline 14, the second electromagnetic valve 15 is a two-way valve, and the two-way valve can be a manual valve, an electric valve or a pneumatic valve. The fire fighting discharge pipe 14 and CO₂The steel cylinder 16 is connected, and the first electromagnetic valve 13 and the second electromagnetic valve 15 are respectively connected with the second fire alarm controller 2; all of the first sampling pipes 39 are connected to a first cargo tank 41, a second cargo tank 42, a third cargo tank 43, a fourth cargo tank 44, and an n cargo tank 45, respectively.

The first cargo compartment 41, the second cargo compartment 42, the third cargo compartment 43, the fourth cargo compartment 44 … … and the n cargo compartment 45 are all provided with a cargo compartment air duct 17 for ventilation, in the embodiment, the first cargo compartment 41, the second cargo compartment 42 and the third cargo compartment 43 are dangerous cargo compartments, the second smoke detection box 76 of the dangerous cargo compartment is an explosion-proof air duct detection box 77, and an explosion-proof detector is installed in the explosion-proof air duct detection box 77.

The alarm system also comprises a third fire alarm controller 21 for controlling the cabin 20 and a first fire alarm controller 23 for controlling the living area 22, wherein the third fire alarm controller 21 and the second fire alarm controller 2 are respectively connected with the first fire alarm controller 23; the arrangement makes the three fire alarm controllers in the embodiment mutually stand by or independently used.

As shown in fig. 9, a third control panel 24 and a water mist discharge control panel 53 are provided on the surface of the third fire alarm controller 21; a third detector communication module, a third power module, a relay output module and an I/O module are arranged in the third fire alarm controller 21, the number of each module can be freely configured according to actual needs, and the third fire alarm controller 21 is mainly used for detecting the area of the cabin 20, monitoring the host 54, the auxiliary machines 55, the oil distribution machine 56 and the incineration boiler 57. The third fire alarm controller 21 is connected to the flame detector 58 and the second smoke detector 79.

A water level switch connecting wire 59 and a water pump control panel connecting wire 60 are connected to the third fire alarm controller 21, the water level switch connecting wire 59 is connected with a water level switch 26 in the water tower 25, the water pump control panel connecting wire 60 is connected with a water pump control panel 61, the water pump control panel 61 is connected with an electric switch 62, a pressure switch PS63, a vacuum pressure gauge CG64 and a pressure measurement switch PG65 are arranged in the electric switch 62, the pressure switch PS63 is connected with the water pump control panel 61, the water pump control panel 61 is also connected with a water pump motor 67, the water pump motor 67 is connected with a water pump 27, one end of the water pump 27 is connected with the water tower 25 through a water inlet pipe 66, the other end of the water pump 27 is connected with a water outlet main pipe 28, the water inlet pipe 66 is connected with the vacuum pressure gauge CG64, the water outlet main pipe 28 is respectively connected with a pressure switch PS63 and a pressure measurement switch PG 59, a filter 68 is further arranged on the water inlet pipe 66, a third electromagnetic valve 29 is arranged on the main water outlet pipe 28, the side wall of the main water outlet pipe 28 is further connected with an emptying pipe 69, an emptying valve 70 is arranged on the emptying pipe 69, the water outlet of the main water outlet pipe 28 is connected with a plurality of branch pipes 30, electric stop valves 31 are arranged on the branch pipes 30, the branch pipes 30 are led into the main machine 54, the auxiliary machine 55, the oil separating machine 56 and the incineration boiler 57, a plurality of water mist nozzles 32 are arranged on the branch pipes 30 positioned in the main machine 54, the auxiliary machine 55, the oil separating machine 56 and the incineration boiler 57, and all the electric stop valves 31 are respectively connected with a water pump control panel 61; the main machine 54, the auxiliary machine 55, the oil separating machine 56 and the incineration boiler 57 are internally provided with a flame detector 58, a second smoke detector 79, an audible and visual alarm 71 and a local release button 72; all the flame detectors 58 and the second smoke detectors 79 in the cabin 20 are connected and then connected with the third fire alarm controller 21; all the audible and visual alarms 71 in the engine room 20 are connected and then connected with the third fire alarm controller 21; all local release buttons 72 inside the nacelle 20 are connected to the third fire alarm controller 21.

In this embodiment, the third fire alarm controller 21 is located at a fire station or a cab;

the water mist nozzle 32, the flame detector 58, the second smoke detector 79, the audible and visual alarm 71 and the local release button 72 are all located within the nacelle 20.

As shown in fig. 10, a first control panel 33 is provided on a surface of the first fire alarm controller 23; the first fire alarm controller 23 is installed in the cab, the first fire alarm controller 23 includes a first detector communication module, a first power module, a relay output module, and an I/O module, and the number of each module can be freely configured according to actual needs. The first fire alarm controller 23 is mainly connected to the third smoke detector 80, the temperature detector 74 and the manual button 75 which are located in the living area 22. Preferably, the first fire alarm controller 23 is further connected to an address unit, a timer unit and a safety isolator, an audible and visual alarm, a solenoid valve, etc.

The second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 in this embodiment are main control units, and the second control panel 3, the third control panel 24 and the first control panel 33 all have the following functions: liquid crystal display; displaying by an indicator light; an audible warning; operating a keyboard; engineering configuration and event storage; managing linkage control of external output;

detector communication modules, power modules, relay output modules and I/O modules are arranged in the second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23, and power supply and communication in the second fire alarm controller, the third fire alarm controller and the first fire alarm controller are provided with redundancy, so that the failure of one module can not cause the failure or system paralysis of other modules.

The first power module, the second power module, and the third power module in this embodiment may have three types of input power: AC110~220V, DC24V, DC24V battery (two). The second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 in this embodiment are all main control units, and the main control units adopt an ARM processor and a mass storage of an NXP company. The main control unit can run in a single machine and also can carry out redundancy configuration (each fire alarm controller comprises double main control modules, and the modules are communicated with each other and have power redundancy) so as to meet the requirement of safe port returning.

The power supply module in the embodiment is connected with a charging management module of the power supply, the charging management module is used for charging the standby battery and managing and switching the input power supply, and the charging management module is communicated with the fire alarm controller and reports the parameter state of the power supply. In this embodiment, the second control panel 3, the third control panel 24 and the first control panel 33 are all provided with fire display panels and integrated with audible and visual alarms. The second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 are also respectively connected with an external communication module, and the external communication module is provided with a VDR interface; the external communication module provides a repeater and is connected with an interface of the fire display panel for transmitting the fire transmitted by the fire display panel.

The short-circuit isolator in this embodiment outputs DC24V or passive contacts to the outside; monitoring the state of the output line; and communicates with the second fire alarm controller 2 to receive the output command. If a short circuit occurs in the second smoke detection box 76 within the cargo space 1, the short circuit isolator places an isolation wire in the short circuit position to allow the other equipment on the entire two wire loop 78 to function properly.

The alarm system of the smoke alarm for the ship further comprises a fourth fire alarm controller 34 which is respectively connected with the second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23, wherein the fourth fire alarm controller 34 is used as a standby controller on the ship, can be selected and installed or not installed, and is started when one of the second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 fails after being installed, but is only used for standby at ordinary times, so that the safe returning of the ship to a port is ensured.

The alarm system of the embodiment integrates fire monitoring of three areas, namely the living area, the cargo hold and the engine room, the fire alarm controllers of the three areas have faults and cannot influence each other, one fire alarm controller can be used for standby, and the fire of the three areas can be uniformly monitored through one master control panel.

The fourth fire alarm controller 34 connected to the second fire alarm controller 2, the third fire alarm controller 21 and the first fire alarm controller 23 is also connected to at least one repeater, and outputs signals to the repeater and the VDR to monitor an alarm.

The second fire alarm controller 2, the third fire alarm controller 21, the first fire alarm controller 23 and the fourth fire alarm controller 34 can also be respectively and independently connected with at least one repeater, and signals are output to the repeaters and the VDR to monitor and alarm.

The embodiment also discloses an alarm method of the alarm system of the smoke alarm for the ship, which comprises the following steps:

step four: when the first smoke detector 6 gives an alarm, the second fire alarm controller 2 controls the first electromagnetic valve 13 to be closed and controls the second electromagnetic valve 15 to be opened, and the CO is detected₂The cylinder 16 performs the extinguishing operation;

step five: the second smoke detector 79 and the flame detector 58 in the cabin 20 are used for acquiring the flame or smoke concentration of each area of the main machine 54, the auxiliary machine 55, the oil separator 56, the incineration boiler 57 and the like in the cabin 20, converting the detected flame or smoke concentration value into a current pulse signal, sending the current pulse signal to the third fire alarm controller 21, comparing and analyzing the acquired current pulse signal by the third fire alarm controller 21, transmitting data to the third control panel 24 for displaying, if the acquired current pulse signal exceeds a set threshold value, sending an audible and visual alarm by the third fire alarm controller 21, controlling to start the water pump 27, the third electromagnetic valve 29 and the corresponding electric stop valve 31, controlling the water spray nozzle 32 to spray by the water spray nozzle 32 through the local release button 72 or the water spray release control panel 53 of the fire control station by a person, and isolating the main machine 54 from the water spray nozzle 32 by the water spray nozzle 32, Oxygen in the auxiliary machine 55, the oil separator 56 or the incineration boiler 57 and the like, so that the effects of extinguishing fire and cooling equipment in the engine room 20 are achieved; meanwhile, the audible and visual alarm 71 gives an alarm and outputs the alarm to the ship-borne navigation data recorder VDR and outputs a switching value signal;

step six: the third smoke detector 80 and the temperature detector 74 in the living area 22 are used for detecting whether the living area 22 catches fire, and if the living area 22 catches fire, the audible and visual alarm integrated in the first control panel 33 gives an alarm and outputs the alarm to the ship-borne navigation data recorder VDR and outputs a switching value signal;

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A smoke alarm for a ship, comprising a second remote fire alarm controller for controlling a cargo space to emit a fire alarm, the second fire alarm controller being located at the CO₂A chamber; a second control panel is arranged on the surface of the second fire alarm controller;

2. The marine smoke alarm of claim 1, wherein a first smoke detector and an airflow pressure sensor are arranged in the first smoke detection box, and are respectively connected with the second control panel, the second detector communication module and the second fire alarm controller; the first smoke detection box is divided into two cavities by a partition plate, the first smoke detector is placed in one cavity, the airflow pressure sensor is placed in the other cavity, and a flow plate is arranged on the partition plate.

3. The marine smoke alarm of claim 2, wherein a filter element is arranged in the air inlet hole, the air inlet hole is communicated with the cavity for placing the first smoke detector, and the air outlet hole is communicated with the cavity for placing the airflow pressure sensor; the first smoke detector and the airflow pressure sensor are connected to a wiring board through wires, the wires of the first smoke detector penetrate through wire holes in the partition board and then are connected with the wiring board, and the wires of the airflow pressure sensor are also connected with the wiring board.

4. The marine smoke alarm of claim 2, wherein the partition is provided with an airflow pressure sensor inlet, the airflow pressure sensor inlet is movably covered with a flow plate, the flow plate is provided with an orifice, and the diameter of the orifice is adjusted according to the calibers of the first sampling pipelines with different diameters; the caliber of the first sampling pipeline is DN 20-150; the diameter of the throttling hole is 10-45 mm, and the aperture of the throttling hole is freely adjusted by the hole opener.

5. The marine smoke alarm of claim 4, wherein the first sampling pipeline is provided with a first solenoid valve, the first solenoid valve is a two-way valve, the first sampling pipeline at one end of the first solenoid valve close to the cargo compartment is communicated with a fire fighting discharge pipeline, the fire fighting discharge pipeline is provided with a second solenoid valve, the second solenoid valve is a two-way valve, and the fire fighting discharge pipeline and the CO discharge pipeline are communicated with each other₂The first electromagnetic valve and the second electromagnetic valve are respectively connected with a second fire alarm controller; all the first sampling pipelines are respectively connected to a first cargo hold, a second cargo hold, a third cargo hold, a fourth cargo hold and an n cargo hold.

6. The smoke alarm for the ship as claimed in claim 1, wherein a cargo compartment air duct is arranged in the cargo compartment, an air duct exhaust fan is arranged in the cargo compartment air duct, a lower pipeline and an upper pipeline are respectively communicated with two ends of the air duct exhaust fan, and a second smoke detection box is connected in parallel between the lower pipeline and the upper pipeline.

7. The smoke alarm for the ship of claim 6, wherein the cargo hold comprises a first cargo hold, a second cargo hold, a third cargo hold, a fourth cargo hold and a n cargo hold;

the double-wire lead loop comprises a first lead and a second lead which are respectively connected with the second fire alarm controller, the first lead is led into a cargo compartment air duct of a first cargo compartment after being connected with the first junction box and is connected with a plurality of explosion-proof air duct detection boxes, the first junction box comprises a safety isolator, a short-circuit isolator and a signal amplifier, and the short-circuit isolator is used for isolating a second smoke detection box connected to the signal amplifier of the first junction box and feeding back to the second fire alarm controller when short circuit occurs among the explosion-proof air duct detection boxes, so that the normal work of the second smoke detection box on the second junction box is not influenced by the short circuit of devices on the first junction box circuit;

8. The alarm system of the marine smoke alarm according to any one of claims 1 to 7, further comprising a third fire alarm controller for controlling the engine room;

the third fire alarm controller is mainly used for detecting the cabin area, monitoring the main machine, the auxiliary machines, the oil distribution machine and the incineration boiler;

the third fire alarm controller is located at a fire station or a cab.

9. The alarm system of the marine smoke alarm according to claim 8, further comprising a first fire alarm controller for controlling the living area, wherein the third fire alarm controller and the second fire alarm controller are respectively connected to the first fire alarm controller;

the first fire alarm controller is also connected with an address unit, a timer unit, a safety isolator, an audible and visual alarm and an electromagnetic valve.

10. The warning system of a marine smoke alarm of claim 9, wherein the second fire alarm controller, the third fire alarm controller and a fourth fire alarm controller connected to the first fire alarm controller are connected to at least one repeater; or the second fire alarm controller, the third fire alarm controller, the first fire alarm controller and the fourth fire alarm controller can be respectively connected with at least one repeater.