Automatic interlocking device for emergency cut-off valve of liquefied hydrocarbon vehicle

Abstract

The utility model discloses a liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device which comprises an air cylinder guide rail frame and a hazardous chemical substance tank car, an air cylinder is arranged at the upper end of the air cylinder guide rail frame, an electromagnetic valve is arranged at an air inlet of the air cylinder, an air cylinder piston is arranged at the output end of the air cylinder, and a steel wire rope is arranged at the other end of the air cylinder piston. A PLC is arranged at the lower end of the electromagnetic valve, a combustible and toxic alarm instrument is arranged at the right end of the PLC, and an air source pipe is arranged at an air inlet of the electromagnetic valve. By arranging the combustible and poisonous alarm instrument, the PLC, the electromagnetic valve, the air cylinder and the steel wire rope, leaked combustible and poisonous gas is detected through the combustible and poisonous alarm instrument, and then an electric signal is indirectly transmitted to the electromagnetic valve through the PLC, so that the electromagnetic valve drives the air cylinder to work, the steel wire rope pulls the emergency cut-off valve, and the emergency cut-off valve is closed; the function of automatically closing the emergency cut-off valve is achieved, and the safety of the liquefied hydrocarbon vehicle during working is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical loading and unloading vehicle field, concretely is a kind of liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device. BACKGROUND

[0002] Liquefied hydrocarbon vehicle refers to the car using liquefied petroleum gas or liquefied natural gas as fuel, because it is installed with various safety safety valve, strictly and practically guarantee that car will not occur fire or explosion accident under various unexpected situations, high safety performance has been recognized by the world, compared with gasoline, the fuel of liquefied hydrocarbon vehicle is lower in fuel cost, and engine service life is long, cold start performance is good, and it is stable in operation, compared with oil fuel, gas fuel is less in energy loss during preparation process, and harmful emission pollutants are less, which is more beneficial to environmental protection, liquefied hydrocarbon vehicle loading and unloading refers to the process that liquefied hydrocarbon is loaded into or unloaded from transport vehicle from storage tank or production device through special equipment, during the process of liquefied hydrocarbon vehicle loading and unloading, there are a large number of human operation actions, and there are security risks that operation failure leads to material leakage from loading and unloading port in vehicle, Linyi Jinyu petrochemical accident is caused by the fact that vehicle emergency cut-off valve is not closed, so a liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device is provided. SUMMARY

[0003] The utility model aims at providing a kind of liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device, can solve the problem that traditional liquefied hydrocarbon vehicle emergency cut-off valve cannot be closed in time.

[0004] To achieve the above object, provide a kind of liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device, including cylinder guide rail frame, dangerous chemical tank car, the upper end of the cylinder guide rail frame is equipped with cylinder, the gas inlet of the cylinder is equipped with electromagnetic valve, the output end of the cylinder is equipped with cylinder piston, the other end of the cylinder piston is equipped with steel wire rope;

[0005] The lower end of the electromagnetic valve is equipped with PLC controller, and the right end of the PLC controller is equipped with combustible and toxic alarm instrument.

[0006] According to the liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device, the gas inlet of the electromagnetic valve is equipped with gas source pipe, and the gas source pipe is installed at the gas inlet of the electromagnetic valve.

[0007] According to the liquefied hydrocarbon vehicle emergency cut-off valve automatic interlocking device, the side of the dangerous chemical tank car is equipped with emergency cut-off valve, and the emergency cut-off valve is installed on the side of the dangerous chemical tank car.

[0008] According to the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, the lower end of the air cylinder is fixedly connected with the air cylinder guide rail frame.

[0009] According to the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, the electromagnetic valve is installed at the air inlet of the air cylinder.

[0010] According to the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, the left end of the air cylinder piston is fixedly connected with the output end of the air cylinder, and the left end of the steel wire rope is fixedly connected with the other end of the air cylinder piston.

[0011] According to the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, the upper end of the PLC controller is electrically connected with the electromagnetic valve.

[0012] According to the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, the left end of the flammable and toxic alarm instrument is electrically connected with the PLC controller.

[0013] Compared with the prior art, the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle has the following beneficial effects:

[0014] 1、The automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle, through the setting of the flammable and toxic alarm instrument, the PLC controller, the electromagnetic valve, the air cylinder and the steel wire rope, the flammable and toxic gas leaked is detected by the flammable and toxic alarm instrument, then the electric signal is indirectly transmitted to the electromagnetic valve through the PLC controller, so that the electromagnetic valve drives the air cylinder to work, so that the steel wire rope pulls the emergency cut-off valve, and the emergency cut-off valve is closed, the function of automatically closing the emergency cut-off valve is realized, and the safety of the liquefied hydrocarbon vehicle during work is improved.

[0015] Additional aspects and advantages of the present application will be described in the following description, some of which will become apparent to those skilled in the art from the following description, or will be learned from practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments.

[0017] Fig. 1 It is a structural schematic view of the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle.

[0018] Fig. 2 It is a circuit diagram of the flammable and toxic alarm instrument and the electromagnetic valve interlocking of the automatic interlocking device of the emergency cut-off valve of the liquefied hydrocarbon vehicle.

[0019] In the figure: 1, cylinder guide rail frame; 2, dangerous chemical tank car; 3, cylinder; 4, gas source pipe; 5, electromagnetic valve; 6, cylinder piston; 7, steel wire rope; 8, emergency shut-off valve; 9, flammable and toxic alarm instrument; 10, PLC controller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figs. 1-2 The utility model embodiment provides a technical scheme: a kind of liquefied hydrocarbon vehicle emergency shut-off valve automatic interlocking device, including cylinder guide rail frame 1, dangerous chemical tank car 2, the upper end of cylinder guide rail frame 1 is equipped with cylinder 3, the gas inlet of cylinder 3 is equipped with electromagnetic valve 5, the output end of cylinder 3 is equipped with cylinder piston 6, another end of cylinder piston 6 is equipped with steel wire rope 7.

[0022] The lower end of electromagnetic valve 5 is equipped with PLC controller 10, the right end of PLC controller 10 is equipped with flammable and toxic alarm instrument 9, by being equipped with flammable and toxic alarm instrument 9, PLC controller 10, electromagnetic valve 5, cylinder 3, steel wire rope 7, by flammable and toxic alarm instrument 9 detection leakable flammable and toxic gas, then electric signal is indirectly delivered to electromagnetic valve 5 by PLC controller 10, so that electromagnetic valve 5 drives cylinder 3 to work, so that steel wire rope 7 pulls emergency shut-off valve 8, so that emergency shut-off valve 8 is closed, the function of automatically closing emergency shut-off valve 8 is realized, and the safety when liquefied hydrocarbon vehicle works is improved.

[0023] The air inlet of the electromagnetic valve 5 is provided with the air source pipe 4, the air source pipe 4 is installed on the air inlet of the electromagnetic valve 5, the air source pipe 4 is arranged to facilitate the air to enter the inside of the cylinder 3 through the electromagnetic valve 5, the side of the dangerous chemical tank vehicle 2 is provided with the emergency cut-off valve 8, the emergency cut-off valve 8 is installed on the side of the dangerous chemical tank vehicle 2, the emergency cut-off valve 8 is a valve installed on the tank vehicle, tank container, storage tank or pipeline, which can be manually or automatically closed quickly in emergency conditions, the arrangement of the emergency cut-off valve 8 can quickly and tightly cut off and isolate the flammable and toxic materials in case of fire, leakage and other accidents, so as to prevent the accident from expanding, the lower end of the cylinder 3 is fixedly connected with the cylinder guide rail frame 1, the cylinder 3 is an important part of the automatic interlocking device of the liquefied hydrocarbon vehicle, and is a power element for realizing the automatic closing of the emergency cut-off valve 8, the electromagnetic valve 5 is installed on the air inlet of the cylinder 3, the electromagnetic valve 5 is a device for controlling the opening and closing or direction of fluid by electromagnetic force, since the electromagnetic valve 5 operates by the electromagnetic force acting on the iron core sealed in the magnetic sleeve, there is no dynamic sealing problem, so that external leakage can be effectively prevented, and internal leakage is also easy to control, the electromagnetic valve 5 has simple structure and relatively low price, and is convenient to install and maintain, at the same time, since the switching signal control mode is convenient to connect with the industrial computer, the response time of the electromagnetic valve 5 is extremely short, usually reaching millisecond level, in addition, the coil power consumption of the electromagnetic valve 5 designed in a proper manner is very low, and the electromagnetic valve 5 belongs to energy-saving products, the left end of the cylinder piston 6 is fixedly connected with the output end of the cylinder 3, the left end of the steel wire rope 7 is fixedly connected with the other end of the cylinder piston 6, the upper end of the PLC controller 10 is electrically connected with the electromagnetic valve 5, and the left end of the flammable and toxic alarm instrument 9 is electrically connected with the PLC controller 10.

[0024] The automatic interlocking device can further include a power supply, a KA relay, the flammable and toxic alarm instrument 9 is connected in series with the power supply, the normally open contact of the KA relay and the flammable and toxic alarm instrument 9 is connected in series with the power supply, and the normally open contact of the KA relay and the electromagnetic valve 5 is connected in series with the power supply.

[0025] Working principle: in use, the power supply is turned on, when the emergency cut-off valve 8 is automatically closed, first, the dangerous chemical tank vehicle 2 stops at the parking position, the rodless section of the cylinder 3 sends air to make the cylinder piston 6 be pushed out, the steel wire rope 7 connected with the cylinder piston 6 is hung on the handle of the emergency cut-off valve 8 of the liquefied hydrocarbon tank vehicle, then when the liquefied hydrocarbon tank vehicle leaks, the flammable and toxic alarm instrument 9 detects the leakage, so that the flammable and toxic alarm instrument 9 issues an alarm and the normally open contact of the flammable and toxic alarm instrument 9 is closed, the KA relay is connected with the power supply, the KA relay works to make the normally open contact of the KA relay be closed, the electromagnetic valve 5 is connected with the power supply, the electromagnetic valve 5 works to make the electromagnetic valve 5 act towards the rod section of the cylinder 3, the rodless section of the cylinder piston 6 is retracted, the steel wire rope 7 is pulled to pull the emergency cut-off valve 8, so that the emergency cut-off valve 8 is closed, and the automatic closing of the emergency cut-off valve 8 is realized.

[0026] The utility model embodiment makes the detailed explanation in combination with the drawing, but the utility model is not limited to the above -mentioned embodiment, still can make various changes in the knowledge range that the person skilled in the art has possesses without departing from the utility model's tenet under the precondition that the knowledge range that the person skilled in the art has possesses.

Claims

1. An automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle, comprising a cylinder guide rail frame (1) and a hazardous chemicals tanker (2), characterized in that: The upper end of the cylinder guide rail frame (1) is provided with a cylinder (3), the air inlet of the cylinder (3) is provided with a solenoid valve (5), the output end of the cylinder (3) is provided with a cylinder piston (6), and the other end of the cylinder piston (6) is provided with a steel wire rope (7); A PLC controller (10) is provided at the lower end of the solenoid valve (5), and a flammable and toxic alarm (9) is provided at the right end of the PLC controller (10).

2. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The air inlet of the solenoid valve (5) is provided with an air source pipe (4), and the air source pipe (4) is installed at the air inlet of the solenoid valve (5).

3. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: An emergency shut-off valve (8) is provided on the side of the hazardous chemicals tank truck (2), and the emergency shut-off valve (8) is installed on the side of the hazardous chemicals tank truck (2).

4. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The lower end of the cylinder (3) is fixedly connected to the cylinder guide rail frame (1).

5. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The solenoid valve (5) is installed at the air inlet of the cylinder (3).

6. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The left end of the cylinder piston (6) is fixedly connected to the output end of the cylinder (3), and the left end of the steel wire rope (7) is fixedly connected to the other end of the cylinder piston (6).

7. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The upper end of the PLC controller (10) is electrically connected to the solenoid valve (5).

8. The automatic interlocking device for an emergency shut-off valve of a liquefied hydrocarbon vehicle according to claim 1, characterized in that: The left end of the combustible and toxic alarm device (9) is electrically connected to a PLC controller (10).

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