CN2078810U

CN2078810U - Safety automatic protection for diesel engine

Info

Publication number: CN2078810U
Application number: CN 90222070
Authority: CN
Inventors: 吴存军; 吴存波
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-15
Filing date: 1990-10-15
Publication date: 1991-06-12

Abstract

The utility model relates to a safety automatic protection device for a diesel engine. The safety automatic protection device for a diesel engine is composed of a temperature controller (1), a low voltage controller (2), a super low voltage controller (3), an electromagnetic valve (4), and an electrical control box (5). When the temperature of a machine body raises caused due to the fault occurring of the circulation of cooling water or the super low oil pressure of lubricating oil, the safety automatic protection device for a diesel engine can automatically alarm to cut fuel oil after time is delayed. Cylinder sticking, piston ablation, tile embrace, crank shaft fracture, and bearing damage are effectively avoided. When engine operating personnel can not approach to the diesel engine due to reasons, the engine operating personnel can stop the diesel engine in a long distance, and the safety of the engine operating personnel and the diesel engine is ensured. The electromagnetic valve (4) is an oil cutting component. An electromagnet (8), an oil valve (9), a travel switch (10) are combined to form the electromagnetic valve (4).

Description

Diesel engine safety automatic safety device

The utility model is a kind of safe automatic safety device of diesel engine, is specially adapted to cooling water water temperature and lubricant oil oil pressure automatic warning, the emergency shutdown when undesired, can be widely used in fishing vessel, also can be used for the diesel engine of other purposes.

The diesel engine that generally adopts on the fishing vessel is often stopped up, is broken because of water pipe now.Reasons such as the water pump belt ruptures, skids, water pump draws sky cause the cooling water circulatory troubles, or because of machine oil pipe plug plug, break, oil pump damages, reasons such as lubricant oil infiltration or diesel oil cause lubrication failure.Because cooling water circulatory troubles or lubrication failure can cause that all the body intensification is too high, machine oil is thinning, burn.Cause oil film to lose efficacy, impel part rapid wearing, surperficial mechanical strength to reduce, until causing serious accidents such as piston ablation, Cylinder sticking, crankshaft breakdown, damage of bearings, axis tile.Sometimes because of making driving, leading door and flick operator can't also can't be shut down near diesel engine.It is the most serious to the fishing vessel influence of ocean operation that this class accident takes place.

The utility model is set up a safe automatic safety device exactly on diesel engine, it can break down or the lubricant oil oil pressure is reported to the police when not normal automatically or emergency cut-off fuel oil and shutting down in cooling water circulation.

The utility model is made up of water temperature regulater, delayer, low pressure controller, super-low voltage controller, alarm, solenoid valve and electric control box.When the cooling water water temperature surpasses in advance setting; temperature controller sends signal works alarm and delayer simultaneously; in the delay time of setting up in advance; the black gang must arrive in and get rid of fault; otherwise; just automatically connect solenoid valve during the delayer end-of-job, cut off fuel oil immediately and shut down.When the lubricant oil oil pressure was lower than setting, low pressure controller just sent signal.Make alarm work, urge the people to overhaul; When lubricant oil oil pressure continuation decline reached super-low voltage controller setting, the super-low voltage controller sent signal, and solenoid valve cuts off fuel oil immediately and shuts down.For monitoring the working state of checking automatic safety device at any time and carry out emergency shutdown that the electric appliance control box panel is provided with the button and the tutorial light of corresponding function.Green light is represented working properly, and red light is represented malfunction alarm.When pressing the temperature controller review button, red light is bright, and alarm rings, delayer work, and when pressing the low pressure controller review button, red light is bright, and alarm rings; When pressing the super-low voltage review button, red light is bright, solenoid valve cuts off fuel oil immediately and shuts down, and so just can can't carry out at a distance and shut down near under the situation of turbine personnel, guarantees the safety of operator and diesel engine.

The utility model reaches accompanying drawing with the following Examples and describes in further detail.

Fig. 1 is that work system principle of the present utility model is shown virgin figure.

Fig. 2 is an electrical schematic diagram of the present utility model.

Fig. 3 is the reference drawing that magnetic switch makes electromagnet into.

Fig. 4 is the reference drawing that air starter makes fuel tap into.

24 volts of direct current supplys of general employing on the fishing vessel, other diesel engine also can adopt 220 volts of Alternating Current Power Supplies.

Connecting oil circuit must carry out before diesel engine starts.At first, manually pull fuel tap spanner [13], fuel tap spool [12] is pressed into valve body, promptly connected oil circuit.The feeler lever of position limit switch this moment [10] also is depressed, and circuit is in on-state (but this moment, electromagnet [8] non-transformer passed through).Because iron core [11] the groove inclined-plane of fuel tap spanner extruding electromagnet [8] makes the iron core pressurized, is withdrawn in the electromagnet chamber.After spanner slipped over the core ends inclined-plane, iron core was ejected by stage clip in the electromagnet again, is stuck in the spanner rear edge, stoped spanner to be pushed up back by the spring in the fuel tap.As long as iron core is not withdrawn, spanner is pushed down fuel tap spool [12], and oil circuit just keeps opening state, the work of after this can starting a machine always.After engine oil pressure reaches normal operating pressure, press general power button [14], green light [18], [19], [20], [21] are bright entirely, represent that respectively power supply, temperature controller [1], low pressure controller [2], super-low voltage controller [3] have entered normal Control work state automatically.

Diesel engine is when work, and accident alarming and cut-out oil circuit are realized by following process.When temperature controller [1] received the too high signal of water temperature, the power supply of the sensitive switch demand working alarm [6] in this device also started delayer work, and green light this moment [19] goes out, red light [22] is bright.As the delayer end-of-job and the too high fault of water temperature when still not getting rid of, the out-of-work while of delayer has been connected the power supply of electromagnet [8] again, and iron core is inhaled in the chamber immediately, and the fuel tap spanner is owing to lose stopping of iron core, pushed up back rapidly by the fuel tap spool, fuel path is cut off simultaneously.When spanner was rebounded, the feeler lever of position limit switch also ejected, and had cut off the circuit of electromagnet simultaneously, and electromagnet loses magnetic force, and iron core is ejected by stage clip again, was stopped at position shown in the dotted line among Fig. 1 [13], waited for next repetitive operation.

When the lubricant oil oil pressure was lower than low pressure controller [2] setting, the sensitive switch in this device was promptly connected alarm [6] power supply alarming, and green light [20] goes out, and red light [23] is bright.When if oil pressure continues decline and reaches the limit value of super-low voltage controller [3], the power supply of the sensitive switch demand working solenoid valve [4] in this device is shut down with the aforementioned the same fuel oil that cuts off immediately, and green light [21] goes out simultaneously, and red light [24] is bright, demonstrates trouble location.

The utility model remove solenoid valve [4] for the combination electromagnetism fuel valve of the transformation of the way outdoors, remaining part is universal standard part.Solenoid valve [4] is made up of electromagnet [8], fuel tap [9], position limit switch [10], and the composition mode can be provided by Fig. 1, Fig. 2.Electromagnet [8] can be formed by the transformation of the way of general magnetic switch, be about to shunt winding and change series connection into, and the post of will living makes the iron core that the termination is a groove [11] into, removes wherein electric contact piece and wiring terminal (referring to Fig. 3) simultaneously.Fuel tap [9] can be formed by the transformation of the way of common air starter, only will import and export pore reaming tapping, so as with the oil pipe coupling, connects fasteningly between oil pipe and the fuel tap with flange, seal employing red copper asbestos washer.(referring to Fig. 4)

Claims

1, a kind of safe automatic safety device of diesel engine is characterized in that being made up of temperature controller [1], low pressure controller [2], super-low voltage controller [3], alarm [6], solenoid valve [4] and electric control box [5].

2,, it is characterized in that solenoid valve [4] is made up of electromagnet [8], fuel tap [9], position limit switch [10] by the described device of claim 1.

3,, it is characterized in that on the panel of electric control box [5], being provided with temperature, the green display lamp of lubricant oil oil pressure proper functioning and the red warning light of fault by the described device of claim 1.

4, by claim 1,3 described devices, it is characterized in that on the panel of electric control box [5], being provided with temperature controller [1], low pressure controller [2], the review button [15] of super-low voltage controller [3], [16], [17].

5, by claim 1,2 described devices, it is characterized in that fuel tap [9] can be formed by the transformation of the way of universal standard part air starter, only will import and export pore reaming and tapping, oil pipe part therewith is fastening with the flange connection, and the red copper asbestos washer is adopted in sealing,

6, by the described device of claim 2, it is characterized in that the coil of electromagnet [8] changes series connection into by parallel connection, and the styletable head of will living changes groove shape into, remove wherein electric contact piece and wiring terminal simultaneously.

7, by the described device of claim 1, it is characterized in that temperature controller [1] and the shared same alarm of low pressure controller [2] [6]; When temperature controller [1] starts alarm [6], also start delayer [7].

8, by the described device of claim 1, it is characterized in that temperature controller [1] and the shared same solenoid valve of super-low voltage controller [3] [4].