CN111911400B - Intelligent drainage control system and control method thereof - Google Patents
Intelligent drainage control system and control method thereof Download PDFInfo
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- CN111911400B CN111911400B CN202010992377.5A CN202010992377A CN111911400B CN 111911400 B CN111911400 B CN 111911400B CN 202010992377 A CN202010992377 A CN 202010992377A CN 111911400 B CN111911400 B CN 111911400B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 144
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000009825 accumulation Methods 0.000 claims description 21
- 238000002955 isolation Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses an intelligent drainage control system and a control method thereof, which relate to a drainage system and are particularly suitable for flood prevention drainage of a transformer substation, mine operation drainage, warehouse and grain depot. The intelligent water pump control system comprises an intelligent central controller, a water pump current signal input and comparison module, a liquid level sensor, a water pump current sensor, a liquid level signal giving unit module, a current signal giving unit module, a manual control input module, a time setting module, a control output module, a water pump control unit, an alarm module, a display unit module, a communication module, a wireless remote control module, a remote mobile phone mobile control terminal, a remote control center platform and a power module. The novel intelligent drainage of manual and automatic, remote and on-site and real-time monitoring data is realized; the change-over switch and the start-stop button can be integrated on the novel drainage controller; equipment faults caused by poor contact are reduced; the control parameters can be flexibly set or changed.
Description
Technical Field
The invention discloses an intelligent drainage control system and a control method thereof, which relate to a drainage system and are particularly suitable for flood prevention drainage of a transformer substation, mine operation drainage, warehouse and grain depot.
Background
At present, the drainage control of most transformer substations is to simply utilize a float switch to control the starting and stopping of a water pump, install a float on a position to be controlled, and when the liquid level rises to a certain position, the pump is started, and the float outputs switching value. The floating ball is easy to not return in the use process, so that the water pump is controlled by mistake. And the operator cannot accurately know the current water level in real time. The protection of the water pump is to protect the water pump from no load or overload through a thermal relay. When the manual and automatic switching control is carried out on the drainage control equipment on site, the manual and automatic switching control is realized through a change-over switch on site. That is, to manually turn on the pump, it is necessary to go to the field for operation. This makes it impossible for the staff to grasp the water level of each substation and the state of the control equipment in real time.
The main disadvantages of the above control device include:
1. The height of the water level and the working running current of the water pump cannot be intuitively monitored in real time, and the equipment cannot be effectively protected;
2. Control of the remote monitoring platform and wireless mobile phone monitoring and operation cannot be realized;
3. The contact of the float switch is easy not to return in water, so that the water pump acts by mistake;
4. the data of the liquid level control points (such as no-load current, overload current, control liquid level, water pump working time and the like) cannot be set according to different working environments;
5. The mechanical change-over switch and the button are easy to oxidize and generate bad contact when being positioned on an outdoor contact for a long time, so that fault points are increased, and the workload of workers is increased;
6. and when the alarm micro-letter pushing is not performed, the problem can be found and solved only when a worker patrols and examines the equipment in case of faults.
Disclosure of Invention
The invention aims to provide an intelligent drainage control system and a control method thereof aiming at the defects, and an industrial-grade chip, a high-reliability solid-state relay and a high-integration design are adopted; the system is a brand new intelligent drainage system for realizing manual and automatic, remote and on-site data monitoring in real time; all the transfer switches and the start-stop buttons can be integrated on the novel drainage controller; equipment faults caused by poor contact are reduced; all control parameters can be set or changed on site, remote platform and mobile phone APP.
The invention is realized by adopting the following technical scheme:
the intelligent drainage control system comprises an intelligent central controller, a water pump current signal input and comparison module, a liquid level sensor, a water pump current sensor, a liquid level signal giving unit module, a current signal giving unit module, a manual control input module, a time setting module, a control output module, a water pump control unit, an alarm module, a display unit module, a communication module, a wireless remote control module, a remote mobile phone mobile control terminal, a remote control center platform and a power supply module;
The input end of the intelligent central controller is respectively connected with the water pump current signal input and comparison module, the liquid level signal input and comparison module, the manual control input module, the time setting module and the power supply module; the output end of the intelligent central controller is respectively connected with the control output module, the alarm module, the display unit and the communication module;
The communication module is connected with the remote control center platform and is connected with the remote mobile phone mobile control terminal through the wireless remote control module;
The liquid level sensor is arranged in a water accumulation tank of the transformer substation, and the intelligent central controller is connected with the liquid level sensor and the liquid level signal giving unit module through the liquid level signal input stage comparison module respectively; the input end of the liquid level signal input and comparison module is respectively connected with the liquid level signal sensor and the liquid level signal giving unit module; the output end of the liquid level sensor is connected with the input end of the liquid level signal input comparison module, and the output end of the liquid level signal giving unit is connected with the input end of the liquid level signal input comparison module;
The output end of the liquid level signal input and comparison module is connected with the intelligent central controller; the intelligent central controller is connected with the water pump control unit through the control output module and is used for controlling the working state of the water pump;
The input end of the water pump current signal input comparison module is respectively connected with the water pump current sensor and the water pump current given unit module, and the output end of the water pump current signal input comparison module is connected with the intelligent central controller;
the power module adopts 24V power module, 220V alternating current is connected to power module's input, power module's output and intelligent central controller, liquid level sensor, water pump current signal input and comparison module, liquid level signal input and comparison module, communication module, alarm module, control output module wireless remote control module and display element module link to each other for intelligent central controller, liquid level sensor, water pump current signal input and comparison module, liquid level signal input and comparison module, communication module, alarm module, control output module and display element module power supply.
The water pump control unit comprises a main pump control unit and a standby pump control unit, wherein the main pump control unit is connected with the main pump, and the standby pump control unit is connected with the standby pump; the water pump current sensor comprises a main pump current signal sensor and a standby pump current signal sensor; the water pump current setting unit comprises a main pump current setting unit module and a standby pump current setting unit module; the input end of the water pump current signal input comparison module is respectively connected with the main pump current signal sensor, the standby pump current signal sensor, the main pump current given unit module and the standby pump current given unit module; the output end of the water pump current signal input comparison module is connected with the intelligent central controller; the main pump current signal and the standby pump current signal are input into the comparison module for isolating and comparing the main pump current signal and the standby pump current signal with the signals of the water pump signal giving unit and then outputting the signals to the intelligent central controller.
The liquid level signal input and comparison module is used for isolating and comparing the liquid level sensor signal and the signal of the liquid level signal giving unit and outputting the signals to the intelligent central controller.
The liquid level signal giving unit is used for setting and giving the liquid level range, the main pump starting liquid level height, the standby pump starting liquid level height and the alarm liquid level height.
The communication module adopts a communication distribution isolation module.
The liquid level sensor adopts a throw-in type liquid level meter to display liquid level values on site, and outputs 4-20mA continuous analog quantity signals to the signal input comparison module.
The current sensor adopts a current transducer and is used for measuring the working current of the water pump and outputting 4-20mA continuous analog quantity signals to the water pump current signal input and comparison module.
The current signal giving unit is used for setting and giving the measuring range of the working current of the water pump, the overload current and the no-load current of the water pump.
The time setting module has a clock function and records and sets the working time of the water pump in an alarm mode, so that the safe and effective operation of equipment is protected; the output end of the time setting unit is connected with the input end of the intelligent central controller.
The manual control input module is used for switching on-site control output to the intelligent central controller under a manual state so as to control the starting and stopping of the water pump; the output end of the manual control input module is connected with the input end of the intelligent central controller.
The input end of the control output module is connected with the output end of the intelligent central controller, and the output end of the control output module is connected with the water pump control unit; the control output module is used for receiving an output instruction of the intelligent central controller and controlling the power on and off of the water pump control unit.
The water pump control unit is used for controlling the start and stop of the water pump, the input end of the water pump control unit is connected with the control output module, and the output end of the water pump control unit is connected with the water pump.
The alarm output module has the functions of liquid level alarm, main pump no-load alarm, main pump overload alarm, standby pump no-load alarm, standby pump overload alarm, main pump working time alarm, standby pump working time alarm and working power supply power failure alarm; the input end of the alarm output module is connected with the intelligent central controller, and the output end of the alarm output module is connected with the display unit module and the communication module.
The display unit module is used for displaying the liquid level of the water accumulation pool, the working liquid level of the main pump, the working liquid level of the auxiliary pump, the alarm liquid level, the operation state of the main pump, the working current of the main pump, the idle current of the main pump, the operation state of the auxiliary pump, the working current of the auxiliary pump, the idle current of the auxiliary pump, the alarm information, the historical record and the time set value, and the input end of the display unit is respectively connected with the intelligent central controller and the alarm module.
The communication module adopts a communication distribution isolation module to support one-to-two isolation communication, one is connected with the remote control center, and the other is connected with the wireless remote control module; the input end of the communication distribution isolation module is connected with the intelligent central controller, and the output end of the communication distribution isolation module is connected with the remote control center and the wireless remote control module.
The wireless remote control module is used for sending the system data to the remote mobile phone mobile control terminal in real time and pushing the alarm information to the remote mobile phone mobile control terminal in real time; the input end of the wireless remote control module is connected with the communication module, and the output end of the wireless remote control module is connected with the remote mobile phone mobile control terminal.
The remote mobile phone mobile control terminal is provided with application software APP, the remote control center and the remote mobile phone mobile control terminal can acquire running alarm data of equipment in real time, and necessary parameter setting and remote manual control of starting and stopping of the main pump and the standby pump can be performed at any time through the APP; the input end of the remote control center is connected with the communication module.
Working principle: when the control system is applied, the intelligent central controller carries out logic operation on an input signal according to the liquid level of the water accumulation tank of the liquid level signal sensor and the current of the water pump working current sensor in an automatic state and outputs the input signal to the control output module so as to control the start and stop of the water pump; the manual control input module gives an instruction to the intelligent central controller under the manual state so as to control the starting and stopping of the water pump; and meanwhile, outputting signals to a display unit module, an alarm module and a communication module, and outputting the signals to a remote control center and a mobile control terminal of the mobile phone.
The control method of the intelligent drainage control system comprises the following steps:
1. The liquid level sensor is arranged in a water accumulation tank of the transformer substation, and the liquid level signal input and comparison module is connected with the liquid level sensor; connecting a main pump control unit with a main pump, and connecting a standby pump control unit with a standby pump;
2. setting liquid level control parameters of a liquid level signal giving unit of the system;
(1) Setting a measuring liquid level range to enable the set range to be consistent with the range of the liquid level sensor;
(2) Setting the running liquid level and the control return difference value of the water pump;
(2-1) setting a main pump operation level and a control return difference value;
(2-2) setting a main pump operation level and a control return difference value;
3. According to the power of the main pump and the standby pump on site, setting the overload current and the idle current of the main pump and the standby pump;
4. Setting the running time of the main pump and the standby pump through a time setting module;
5. In an automatic state, the liquid level sensor transmits a liquid level signal to the intelligent central controller, and when the liquid level of a transformer substation water accumulation tank reaches a set main pump operation liquid level, the intelligent central controller sends a signal to enable a main pump power supply to be connected, and the main pump operates to drain water; if the water quantity is large in rainy season, the main pump cannot be timely discharged, and when the liquid level continues to rise to the set standby pump running current, the standby pump power supply is switched on, and the standby pump runs to drain water; if the liquid level of the two water pumps is increased at the same time, when the liquid level is increased to a set alarm value, the alarm module outputs a signal to a remote control center and is pushed to a mobile phone of a worker through a WeChat to prompt to check on site as soon as possible;
6. When the liquid level of the transformer substation water accumulation tank is reduced to be lower than the set alarm liquid level, the alarm is released; when the liquid level of the transformer substation water accumulation tank is reduced to be lower than the set working liquid level value of the backup pump, the backup pump is powered off to stop running; when the liquid level of the transformer substation water accumulation tank is reduced to be lower than the set working liquid level of the main pump, the main pump loses power and stops running; a drain cycle is completed.
In step 4, if the running time of the main pump or the standby pump exceeds the set time, the alarm module alarms, and the WeChat pushes the prompt message, so that the staff can judge whether unsafe conditions occur on site according to the actual conditions such as weather.
In step 5 and step 6, when the water pump is running, the system monitors that the working current of the main pump or the backup pump is higher than the set overload current value or lower than the set no-load current value, the intelligent central controller controls the working power supply of the corresponding main pump or backup pump to be automatically disconnected, and the working power supply is output to the remote control center and is pushed to the staff by a short message in an alarm mode, so that the water pump is required to be checked and maintained on site, and the system is reset after the fault is removed, so that the system runs normally.
When the system operates in an automatic state, parameters can be set through a remote control center and a mobile terminal of a mobile phone, and the water pump can be manually controlled; the manual control on site can also be performed by automatic on site switching.
The invention realizes brand new intelligent drainage of manual and automatic, remote and on-site and real-time monitoring data; all the transfer switches and the start-stop buttons can be integrated on the novel drainage controller; equipment faults caused by poor contact are reduced; all control parameters can be set or changed on site, remote platform and mobile phone APP. Is very convenient and practical, and is suitable for all the transformer substations.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic block diagram of the system of the present invention;
Fig. 2 is an application scenario diagram of the system of the present invention.
In the figure: 1. the device comprises a main pump, a standby pump, a transformer substation water accumulation tank, a liquid level sensor and a liquid level sensor.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 2 and the specific examples.
The intelligent drainage control system comprises an intelligent central controller, a water pump current signal input and comparison module, a liquid level sensor, a water pump current sensor, a liquid level signal giving unit module, a current signal giving unit module, a manual control input module, a time setting module, a control output module, a water pump control unit, an alarm module, a display unit module, a communication module, a wireless remote control module, a remote mobile phone mobile control terminal, a remote control center platform and a power supply module.
The liquid level sensor 4 is arranged in the transformer substation water accumulation tank 3, and the intelligent central controller is connected with the liquid level sensor and the liquid level signal giving unit module through the liquid level signal input stage comparison module respectively; the input end of the liquid level signal input and comparison module is respectively connected with the liquid level signal sensor and the liquid level signal giving unit module; the output end of the liquid level sensor is connected with the input end of the liquid level signal input comparison module, and the output end of the liquid level signal giving unit is connected with the input end of the liquid level signal input comparison module.
The communication module is connected with the remote control center platform and is connected with the remote mobile phone mobile control terminal through the wireless remote control module.
The water pump control unit comprises a main pump control unit and a standby pump control unit, wherein the main pump control unit is connected with the main pump 1, and the standby pump control unit is connected with the standby pump 2; the water pump current sensor comprises a main pump current signal sensor and a standby pump current signal sensor; the water pump current setting unit comprises a main pump current setting unit module and a standby pump current setting unit module; the input end of the water pump current signal input comparison module is respectively connected with the main pump current signal sensor, the standby pump current signal sensor, the main pump current given unit module and the standby pump current given unit module; the output end of the water pump current signal input comparison module is connected with the intelligent central controller; the main pump current signal and the standby pump current signal are input into the comparison module for isolating and comparing the main pump current signal and the standby pump current signal with the signals of the water pump signal giving unit and then outputting the signals to the intelligent central controller.
The intelligent central controller provided by the invention can adopt a commercially available singlechip as a main chip, such as a 51 singlechip.
The water pump current signal input and comparison module and the liquid level signal input and comparison module can adopt the prior known comparison and amplification circuit.
The water pump current sensor may be a commercially available current sensor.
The level signal giving unit module and the current signal giving unit module may employ known standard signal giving means.
The manual control input module can adopt a touch liquid crystal screen and a keyboard.
The time setting module may employ an existing clock module.
The control output module can adopt a GST-LD-8301 input/output module.
The water pump control unit may employ an existing water pump controller.
The wireless remote control module can adopt the existing wireless remote controller.
The communication module can adopt a 485 communication isolation module sold in the market.
Specific examples:
in this embodiment, the system of the present invention is used for monitoring a pool 3 of a substation, and the specific usage method thereof includes the following steps:
1. The liquid level sensor is arranged in a transformer substation water accumulation tank, the liquid level sensor can select XQ series liquid level sensors with corresponding measuring ranges according to different depths of the field water accumulation tank, and the output of the liquid level sensor is a continuous analog 4-20mA current signal; the liquid level signal input and comparison module of the system is connected with a liquid level sensor; connecting a main pump control unit with a main pump, and connecting a standby pump control unit with a standby pump;
2. Setting liquid level control parameters of a liquid level signal giving unit of the system according to the field condition;
(a) Measuring the liquid level range setting (the set range is consistent with the range of the liquid level sensor, otherwise, the display value is inaccurate, thereby affecting the control accuracy);
(b) Setting the operation liquid level of the main pump and setting a control return difference value;
(c) Setting the operation liquid level of the standby pump and setting the control return difference value.
3. According to the on-site water pump power, the overload current and the no-load current of the main pump 1 and the standby pump 2 are set, so that the normal and safe operation of equipment is protected; this step sets up the primary and backup pump current signal giving units that operate the system.
4. Setting the running time of the main pump and the standby pump through the system time setting module; if the running time of the main pump and the standby pump exceeds the set time, the system outputs an alarm and sends a prompt message in a micro-message way, so that a worker can judge whether unsafe conditions occur on site according to actual conditions such as weather and the like.
5. In an automatic state, when the liquid level of the transformer substation water accumulation tank 3 is detected to reach a set main pump operation liquid level, the intelligent central controller sends out a signal to enable a main pump power supply to be connected, and the main pump 1 operates to drain water; if the water quantity is large in rainy season, one water pump cannot be timely discharged, and when the liquid level continues to rise to the set standby pump running current, the standby pump 2 is powered on, and the standby pump 2 runs to drain water. If the liquid level of two water pumps is opened at the same time and is still rising, when rising to the alarm value of setting, this system reports to the police and outputs to remote control center and little letter propelling movement to staff's cell-phone, prompts as early as possible to the on-the-spot inspection.
6. When the liquid level of the transformer substation water accumulation tank 3 drops to be lower than the set alarm liquid level, the alarm is released; when the liquid level of the transformer substation water accumulation tank 3 is reduced to be lower than the set working liquid level value of the backup pump, the backup pump is powered off to stop running; when the liquid level of the transformer substation water accumulation tank 3 is reduced to be lower than the set working liquid level of the main pump, the main pump loses power and stops running; a drain cycle is completed.
When the water pump is running, the system monitors that the working current is higher than the set overload current value or lower than the set no-load current, and the system can automatically cut off the working power supply of the water pump. And the alarm is output to a remote control center and the short message is pushed to staff. The water pump is required to be checked and maintained on site, and the system is reset after the fault is removed, so that the system operates normally.
The system operates in an automatic state, and parameters can be set and the water pump can be manually controlled through a remote control center and a mobile phone mobile terminal. The manual control on site can also be performed by manual and automatic switching on site.
From the above description, it can be seen that the system can perform intelligent control on a single device and multiple devices. Therefore, the control mode is more flexible, the control range is wide, and the popularization and the use are convenient.
Claims (9)
1. The intelligent drainage control system is characterized by comprising an intelligent central controller, a water pump current signal input and comparison module, a liquid level sensor, a water pump current sensor, a liquid level signal given unit module, a current signal given unit module, a manual control input module, a time setting module, a control output module, a water pump control unit, an alarm module, a display unit module, a communication module, a wireless remote control module, a remote mobile phone mobile control terminal, a remote control center platform and a power supply module;
The input end of the intelligent central controller is respectively connected with the water pump current signal input and comparison module, the liquid level signal input and comparison module, the manual control input module, the time setting module and the power supply module; the output end of the intelligent central controller is respectively connected with the control output module, the alarm module, the display unit and the communication module;
The communication module is connected with the remote control center platform and is connected with the remote mobile phone mobile control terminal through the wireless remote control module;
The liquid level sensor is arranged in a water accumulation tank of the transformer substation, and the intelligent central controller is connected with the liquid level sensor and the liquid level signal giving unit module through the liquid level signal input stage comparison module respectively; the input end of the liquid level signal input and comparison module is respectively connected with the liquid level signal sensor and the liquid level signal giving unit module; the output end of the liquid level sensor is connected with the input end of the liquid level signal input comparison module, and the output end of the liquid level signal giving unit is connected with the input end of the liquid level signal input comparison module;
The output end of the liquid level signal input and comparison module is connected with the intelligent central controller; the intelligent central controller is connected with the water pump control unit through the control output module and is used for controlling the working state of the water pump;
The input end of the water pump current signal input comparison module is respectively connected with the water pump current sensor and the water pump current given unit module, and the output end of the water pump current signal input comparison module is connected with the intelligent central controller;
The power supply module adopts a 24V power supply module, the input end of the power supply module is connected with 220V alternating current, and the output end of the power supply module is connected with the intelligent central controller, the liquid level sensor, the water pump current signal input and comparison module, the liquid level signal input and comparison module, the communication module, the alarm module, the control output module wireless remote control module and the display unit module, and is used for supplying power to the intelligent central controller, the liquid level sensor, the water pump current signal input and comparison module, the liquid level signal input and comparison module, the communication module, the alarm module, the control output module and the display unit module;
The water pump control unit comprises a main pump control unit and a standby pump control unit, wherein the main pump control unit is connected with the main pump, and the standby pump control unit is connected with the standby pump; the water pump current sensor comprises a main pump current signal sensor and a standby pump current signal sensor; the water pump current setting unit comprises a main pump current setting unit module and a standby pump current setting unit module; the input end of the water pump current signal input comparison module is respectively connected with the main pump current signal sensor, the standby pump current signal sensor, the main pump current given unit module and the standby pump current given unit module; the output end of the water pump current signal input comparison module is connected with the intelligent central controller; the main pump current signal and the standby pump current signal are input into the comparison module for isolating and comparing the main pump current signal and the standby pump current signal with the signals of the water pump signal giving unit and then outputting the signals to the intelligent central controller.
2. The intelligent drainage control system according to claim 1, wherein the liquid level sensor adopts a throw-in type liquid level meter to display liquid level values on site, and outputs 4-20mA continuous analog signals to the signal input comparison module.
3. The intelligent drainage control system of claim 1, wherein the water pump current sensor is a current transducer for measuring the working current of the water pump, and outputs 4-20mA continuous analog signals to the water pump current signal input and comparison module.
4. The intelligent drainage control system according to claim 1, wherein the communication module adopts a communication distribution isolation module to support one-to-two isolation communication, one is connected with the remote control center, and the other is connected with the wireless remote control module; the input end of the communication distribution isolation module is connected with the intelligent central controller, and the output end of the communication distribution isolation module is connected with the remote control center and the wireless remote control module.
5. The intelligent drainage control system according to claim 1, wherein the remote mobile phone mobile control terminal is provided with application software APP, the remote control center and the remote mobile phone mobile control terminal can collect running alarm data of equipment in real time, and necessary parameter setting and remote manual control of starting and stopping of the water pump can be performed through the APP at any time; the input end of the remote control center is connected with the communication module.
6. A control method based on the intelligent drainage control system according to claim 1, characterized by comprising the following steps:
s1, installing a liquid level sensor in a transformer substation water accumulation tank, and connecting a liquid level signal input and comparison module with the liquid level sensor; connecting a main pump control unit with a main pump, and connecting a standby pump control unit with a standby pump;
S2, setting liquid level control parameters of a liquid level signal giving unit of the system;
(1) Setting a measuring liquid level range to enable the set range to be consistent with the range of the liquid level sensor;
(2) Setting the running liquid level and the control return difference value of the water pump;
(2-1) setting a main pump operation level and a control return difference value;
(2-2) setting a main pump operation level and a control return difference value;
S3, setting overload current and no-load current of the main pump and the standby pump according to the power of the main pump and the standby pump on site;
s4, setting the running time of the main pump and the standby pump through a time setting module;
s5, in an automatic state, the liquid level sensor transmits a liquid level signal to the intelligent central controller, and when detecting that the liquid level of a transformer substation water accumulation tank reaches a set main pump operation liquid level, the intelligent central controller sends a signal to enable a main pump power supply to be connected, and the main pump operates to drain water; if the water quantity is large in rainy season, the main pump cannot be timely discharged, and when the liquid level continues to rise to the set standby pump running current, the standby pump power supply is switched on, and the standby pump runs to drain water; if the liquid level of the two water pumps is increased at the same time, when the liquid level is increased to a set alarm value, the alarm module outputs a signal to a remote control center and is pushed to a mobile phone of a worker through a WeChat to prompt to check on site as soon as possible;
S6, when the liquid level of the transformer substation pool drops to be lower than the set alarm liquid level, the alarm is released; when the liquid level of the transformer substation water accumulation tank is reduced to be lower than the set working liquid level value of the backup pump, the backup pump is powered off to stop running; when the liquid level of the transformer substation water accumulation tank is reduced to be lower than the set working liquid level of the main pump, the main pump loses power and stops running; a drain cycle is completed.
7. The control method of the intelligent drainage control system according to claim 6, wherein in step S4, if the running time of the main pump or the standby pump exceeds the set time, the alarm module alarms, and the WeChat pushes the prompt message, so that the staff can judge whether unsafe conditions occur on site according to the actual conditions such as weather.
8. The control method of intelligent drainage control system according to claim 6, wherein in step S5 and step S6, when the system monitors that the working current of the main pump or the backup pump is higher than the set overload current value or lower than the set no-load current value, the intelligent central controller controls to automatically disconnect the working power supply of the corresponding main pump or backup pump, and outputs an alarm to a remote control center and a short message to be pushed to a worker, and the system is required to perform water pump inspection and maintenance on site, reset after fault removal, and normally operates.
9. The control method of the intelligent drainage control system according to claim 6, wherein the system can set parameters and manually control the water pump through the remote control center and the mobile terminal of the mobile phone when operating in an automatic state; the manual control on site can be performed by the manual and automatic switching on site.
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| CN112859939B (en) * | 2020-12-30 | 2023-05-16 | 中国长江电力股份有限公司 | Liquid level control system and intelligent control method based on liquid level maintenance equipment |
| CN112594004B (en) * | 2020-12-31 | 2023-01-24 | 山东里能鲁西矿业有限公司 | Underground central pump house drainage linkage system for dealing with extreme weather |
| CN113482904B (en) * | 2021-07-10 | 2022-08-19 | 浙江尔格科技股份有限公司 | Oil pump reliability verification device and verification method |
| CN114352352B (en) * | 2021-12-02 | 2024-05-03 | 肃北县金鹰黄金有限责任公司 | Mine automatic drainage system convenient for replacing liquid level sensor and working method |
| CN114183331A (en) * | 2021-12-10 | 2022-03-15 | 浙江中杭水泵股份有限公司 | Remote control system of high-efficient dredge pump |
| CN114740909A (en) * | 2022-04-19 | 2022-07-12 | 国网河南省电力公司周口供电公司 | Intelligent drainage system and drainage method for transformer substation |
| CN116044731B (en) * | 2023-01-17 | 2024-03-29 | 中国长江电力股份有限公司 | Hydraulic system oil pump control system and method |
| CN116498536B (en) * | 2023-05-18 | 2023-10-27 | 合肥三益江海智能科技有限公司 | Intelligent start-stop control system of water pump unit with multi-parameter protection function |
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