阅读说明：本技术 一种防爆加氢车 (Explosion-proof hydrogenation car ) 是由 郜志伦 王军 穆大玉 王重阳 文品 刘涯 孟萌 胡盈真 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种防爆加氢车,包括车架,还包括储气瓶,用于盛放氢气；氢气压缩机,所述氢气压缩机通过管道一连接储气瓶；加氢机,所述加氢机通过管道二连接氢气压缩机；氮气发生器,所述管道一上设置与氮气发生器连接的接口；底板,所述底板设置在车架上；所述储气瓶、氢气压缩机、加氢机、氮气发生器均设置在底板上；自动切断阀,所述自动切断阀位于接口和储气瓶之间；本发明中,氢气压缩机的进气处不处于经常高压的状态,加氢完成后及时对自动切断阀后方的管道一、氢气压缩机、管道二、加氢机内残存的氢气进行清扫,氢气的泄露点少。(The invention discloses an explosion-proof hydrogenation vehicle, which comprises a vehicle frame and a gas storage cylinder, wherein the gas storage cylinder is used for containing hydrogen; the hydrogen compressor is connected with the gas storage bottle through a pipeline; the hydrogenation machine is connected with the hydrogen compressor through a second pipeline; the first pipeline is provided with a connector connected with the nitrogen generator; the bottom plate is arranged on the frame; the gas storage cylinder, the hydrogen compressor, the hydrogenation machine and the nitrogen generator are all arranged on the bottom plate; the automatic cut-off valve is positioned between the interface and the gas storage cylinder; in the invention, the gas inlet of the hydrogen compressor is not in a state of high pressure, and residual hydrogen in the pipeline I, the hydrogen compressor, the pipeline II and the hydrogenation machine behind the automatic cut-off valve is cleaned in time after hydrogenation is finished, so that the leakage point of the hydrogen is less.)

1. An explosion-proof hydrogenation vehicle comprises a vehicle frame and is characterized by comprising

The explosion-proof engine (2) is used for driving the hydrogenation vehicle to run;

the gas storage bottle (3) is used for containing hydrogen;

the hydrogen compressor (8), the said hydrogen compressor (8) is connected to the gas storage cylinder (3) through the pipeline;

the hydrogenation machine (10), the hydrogenation machine (10) is connected with the hydrogen compressor (8) through a second pipeline;

the first pipeline is provided with a connector connected with the nitrogen generator (16);

a base plate (22), the base plate (22) being disposed on the frame; the gas storage bottle (3), the hydrogen compressor (8), the hydrogenation machine (10) and the nitrogen generator (16) are all arranged on the bottom plate (22);

the automatic cut-off valve (13), the said automatic cut-off valve (13) locates between interface and gas bomb (3);

and the central processing unit (21) controls the opening and closing of the automatic cut-off valve (13), and the output end of the central processing unit (21) is electrically connected with the instrument.

2. The explosion-proof hydrogenation vehicle of claim 1, wherein the hydrogen compressor (8) is arranged in a cabinet body (23), the upper plate of the cabinet body (23) is provided with an air vent, the air vent is provided with a hydrogen sensor (6) and a flame sensor (7), and the hydrogen sensor (6) and the flame sensor (7) are electrically connected with the central processing unit (21).

3. The explosion-proof hydrogenation vehicle of claim 1, wherein a pressure transmission probe is arranged on a cylinder cover of a compression cylinder of the hydrogen compressor (8), and the pressure transmission probe is electrically connected with an input end of the central processing unit (21).

4. An explosion-proof hydrogenation vehicle as claimed in claim 1, characterized in that a thermal protector is arranged in the hydrogen compressor (8), and the thermal protector is electrically connected with the central processing unit (21).

5. An explosion-proof hydrogenation car as claimed in claim 1, characterized in that the hydrogenation machine (10) is provided with an evacuation pipe (9), a flame arrester is arranged in the evacuation pipe (9), and a ventilation cap is arranged on the top of the evacuation pipe (9).

6. The explosion-proof hydrogenation vehicle of claim 1, wherein a rate sensor and a second pressure sensor are arranged in the gas outlet pipe of the hydrogenation machine (10), and the rate sensor and the second pressure sensor are electrically connected with the input end of the central processing unit (11).

7. An explosion-proof hydrogenation vehicle as claimed in claim 1, characterized in that the frame tail is provided with an electrostatic conductive connecting chain (14), and the bottom of the vehicle is provided with an electrostatic conductive mopping adhesive tape (17).

8. An explosion-proof hydrogen-filling vehicle as claimed in claim 1, characterized in that the electric lines (20) connected with the central processor (21) are all wired by wire clamps located under the bottom plate (22).

9. An explosion-proof vehicle as defined in claim 1, wherein the air source compressor for braking and other purposes is disposed under the bottom plate (22).

10. An explosion-proof hydrogenation car as claimed in claim 1, characterized in that a flame arrester is installed at the air inlet of the explosion-proof engine (2), an exhaust pipe (19) is arranged on the explosion-proof engine (2), the outlet of the exhaust pipe (19) is positioned below the car frame and in front of the air storage tank (3) and faces to the left side of the driving direction, the flame arrester is arranged in the exhaust pipe (19), and a spark arrester is installed at the tail end of the exhaust pipe (19).

Technical Field

The invention relates to the technical field of hydrogenation, in particular to an explosion-proof hydrogenation vehicle.

Background

The fuel cell is the development direction of the automobile power cell in the future, compared with the traditional internal combustion engine power and power battery pack, the fuel cell has the advantages of long endurance, short hydrogen filling time and zero pollution emission really because the reaction discharge is water, but at present, because the hydrogen fuel cell has higher cost and the construction of matched hydrogenation stations is less, the mobile hydrogenation vehicle can be produced under the background, and the use of the hydrogen fuel cell automobile can be met before the hydrogenation stations are popularized in a large scale. Because the charging pressure of the hydrogen fuel cell is 35 MPa-70 MPa, and the pressure of a high-pressure hydrogen gas storage bottle is 35MPa when a hydrogenation vehicle transports, the hydrogen compressor is required to be used for compressing hydrogen in the hydrogen storage bottle, and then the high-pressure hydrogen is supplemented for the hydrogen fuel cell through a gas gun of a hydrogenation machine, however, the high-pressure hydrogen gas storage bottle, the hydrogen compressor and the hydrogenation machine are connected by adopting a normally open pipeline and belong to an A-type through hole, and belong to a B-type through hole at a stop valve, meanwhile, during normal operation, flanges and connecting pipeline fittings which can not release combustible substances are predicted to belong to a 2-level release source, and the density of the hydrogen is less than that of air, and once the hydrogen is released, the. According to the classification of the country to the dangerous places of explosive gas environment, the area above the whole frame belongs to the dangerous environment of the 1 region or the 2 regions, the electric parts above the frame need to be subjected to explosion-proof treatment, otherwise, once the high-pressure hydrogen is leaked, the high-pressure hydrogen can be ignited by high temperature or electric spark, and the explosion accident of the whole vehicle is caused.

Disclosure of Invention

In view of the above, the present invention provides an explosion-proof hydrogen adding vehicle, in which the air inlet of the hydrogen compressor is not at a high pressure, and the residual hydrogen in the first pipeline, the hydrogen compressor, the second pipeline and the hydrogen adding machine behind the automatic cut-off valve is cleaned in time after the hydrogen adding is completed, so that the leakage point of the hydrogen is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

an explosion-proof hydrogenation vehicle comprises a vehicle frame and further comprises

The explosion-proof engine is used for driving the hydrogenation vehicle to run;

the gas storage cylinder is used for containing hydrogen;

the hydrogen compressor is connected with the gas storage bottle through a pipeline;

the hydrogenation machine is connected with the hydrogen compressor through a second pipeline;

the first pipeline is provided with a connector connected with the nitrogen generator;

the bottom plate is arranged on the frame; the gas storage cylinder, the hydrogen compressor, the hydrogenation machine and the nitrogen generator are all arranged on the bottom plate;

the automatic cut-off valve is positioned between the interface and the gas storage cylinder;

and the central processing unit controls the automatic cut-off valve to be opened and closed, and the output end of the central processing unit is electrically connected with the instrument.

Further, the hydrogen compressor is arranged in the cabinet body, the upper plate of the cabinet body is provided with an air vent, the air vent is provided with a hydrogen sensor and a flame sensor, and the hydrogen sensor and the flame sensor are electrically connected with a central processing unit.

Furthermore, a pressure transmitting probe is arranged on a cylinder cover of a compression cylinder of the hydrogen compressor and is electrically connected with the input end of the central processing unit.

Furthermore, a thermal protector is arranged in the hydrogen compressor and electrically connected with the central processing unit.

Further, an emptying pipe is arranged on the hydrogenation machine, a flame arrester is arranged in the emptying pipe, and a ventilation cap is arranged at the top of the emptying pipe.

Furthermore, a speed sensor and a pressure sensor are arranged in an air outlet pipe of the hydrogenation machine, and the speed sensor and the pressure sensor are electrically connected with the input end of the central processing unit.

Furthermore, the tail of the frame is provided with a static conductive connecting chain, and the bottom of the vehicle is provided with a static conductive mopping adhesive tape.

Furthermore, air source compressors for automobile braking and other purposes are arranged below the bottom plate.

Furthermore, the electric lines connected with the central processing unit are all wired through wire clamps positioned below the bottom plate.

Further, explosion-proof engine air inlet installation spark arrester, be equipped with the blast pipe on the explosion-proof engine, the blast pipe export is located below the frame, before the gas holder and towards driving direction left side, set up the spark arrester in the blast pipe, the terminal installation spark arrester of blast pipe.

The invention has the beneficial effects that:

the automatic cut-off valve is normally closed, hydrogenation can be realized only when the central controller controls the automatic cut-off valve to be opened, the air inlet pipe of the explosion-proof hydrogen compressor is not in a frequent high-pressure state, high-pressure hydrogen in a non-gas-filling state is controlled at one side of the gas storage cylinder, and leakage points of the hydrogen are reduced; after hydrogenation of the hydrogenation engine is completed, the automatic cut-off valve is closed, and the nitrogen generator cleans and evacuates the pipeline I, the pipeline II, the hydrogen compressor and the hydrogenation engine behind the automatic cut-off valve through the interfaces, so that hydrogen leakage is avoided, the danger level of the whole hydrogenation engine is reduced, and the explosion-proof performance of the hydrogenation engine is optimized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

the system comprises a base, a cabinet body, a gas storage tank, a.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an explosion-proof hydrogenation vehicle includes a frame, and further includes:

the explosion-proof engine 2 is used for driving the hydrogenation vehicle to run and is positioned at the rear lower part of the cab;

the gas storage cylinder 3 is used for containing hydrogen, the gas storage cylinder 3 is 9 high-pressure hydrogen gas storage cylinders with the pressure of 35MPa, and a pressure gauge and a pressure sensor I are arranged near the outlet of the gas storage cylinder;

hydrogen compressor 8, hydrogen compressor 8 pass through pipeline one and connect the gas storage bottle, and pipeline one adopts and prevents that hydrogen oozes, prevents the hydrogen brittle material, and hydrogen compressor 8 is diaphragm compressor, and the steel material that toughness is good is selected for use to the diaphragm, can not select for use non-metallic material materials such as rubber to avoid the diaphragm to move the back and produce static and gather, become dangerous ignition source. The membrane fixing part, the push rod connecting part and the compression cylinder cover structure meet the requirement of ExdIIC T3 Gb explosion-proof type;

the hydrogenation machine 10 is connected with the hydrogen compressor 8 through a second pipeline, the second pipeline is made of a hydrogen seepage-proof and hydrogen brittleness-proof material, and the hydrogenation machine 10 adopts Exdib IICT4 Gb and other explosion-proof types which can meet safe use conditions;

the nitrogen generator 16, the first pipeline is provided with a replacement interface connected with the nitrogen generator 16;

the bottom plate 22, the bottom plate 22 is fixed on the frame horizontally; the gas storage cylinders 3, the hydrogen compressor 8, the hydrogenation machine 10 and the nitrogen generator 16 are all arranged on the bottom plate 22, wherein the gas storage cylinders 3 are horizontally arranged on the bottom plate 22 and are fixed by steel strip ribbons 4 which have strong toughness and remove thermal stress;

the automatic cut-off valve 13, the automatic cut-off valve 13 is installed between interface and gas bomb 3;

the central processing unit 21, central processing unit 21 are the singlechip, set up in the driver's cabin, and the control end of automatic cutout valve 13 is connected with central processing unit 21's output electricity, and pressure sensor one is connected with central processing unit 21's input electricity, and the steerable automatic cutout valve 13 switching of central processing unit 21, the instrument is connected with central processing unit 21's output electricity, can show the real-time change of the pressure in the gas bomb 3 on the instrument.

When the automatic cut-off valve 13 is normally closed, the central processing unit 21 controls the automatic cut-off valve 13 to be opened, the air inlet of the hydrogen compressor 8 is not in a frequent high-pressure state, and high-pressure hydrogen in a non-gas-filling state is controlled at one side of the hydrogen gas storage cylinder 3, so that the leakage points of the hydrogen gas are reduced; after the hydrogenation is accomplished, close automatic cutout valve 13, start nitrogen generator 16, remaining hydrogen evacuation in the pipeline of the automatic cutout valve 13 rear end in spacious place reduces the dangerous degree of vehicle at the in-process of traveling, still sets up relief valve 15 on the pipeline one, and relief valve 15 installs between interface and hydrogen compressor 8, but self-closing when hydrogenation speed is too fast effectively prevents the emergence of the condition of revealing during the hydrogenation.

The hydrogen compressor 8 is likely to leak during hydrogenation, in order to find the leakage in time, the hydrogen compressor 8 is arranged in the cabinet body 23, the cabinet body 23 is fixedly arranged on the bottom plate 22, the upper plate of the cabinet body 23 is provided with an air vent which is convenient for the leaked hydrogen to be upwards discharged, the air vent is provided with a hydrogen sensor 6 and a flame sensor 7, the hydrogen sensor 6 and the flame sensor 7 are electrically connected with the input end of the central processing unit 21, when the volume content of the measured hydrogen reaches 0.5 percent, the central processing unit 21 sends out an alarm signal, and when the volume content of the measured hydrogen reaches 1 percent, the circuit and the air circuit of the whole vehicle are disconnected and; when the flame sensor 7 monitors a fire source, the central processing unit 21 sends out an alarm signal, a circuit and a gas circuit of the whole vehicle are disconnected, and fault information is displayed in the instrument.

The pressure transmitting probe is arranged on a cylinder cover of a compression cylinder of the hydrogen compressor 8 and is electrically connected with the input end of the central processing unit 21, once the pressure is rapidly reduced in the working process of the compressor, the phenomenon that a membrane of the compressor is broken or leaks is explained, a signal is sent back to the central processing unit 21 through the transmitter, the central processing unit 21 sends out an alarm signal, a circuit and a gas circuit of the whole vehicle are disconnected, and fault information is displayed on an instrument.

As the 35MPa high-pressure hydrogen needs to be compressed to 35 MPa-70 MPa, the gas inevitably generates heat in the compression process, so as to take away the heat in time and avoid high temperature generated by compression from becoming a dangerous source. The side wall of the gas compression cylinder body adopts a hollow water jacket structure, a plastic material or an antirust coating is sprayed on the inner wall of the water jacket, and the plastic material or the antirust coating is gasified at high temperature in a spraying mode, and then pressurized and flows in the water jacket structure for settlement to obtain a uniform antirust coating. The water in the water jacket is crossed and coiled with the evaporator coil of the refrigeration compressor through the coil in the heat exchanger, so that the heat of the water in the water jacket is taken away by the evaporator coil of the refrigeration compressor, the refrigeration compressor adopts an ExmbiCT 4 Gb encapsulation type structure, an irreversible thermal protector is arranged in an encapsulation junction box, the thermal protection temperature is (108 +/-2) DEG C, a signal is sent to the central processing unit 21 within 3s, a circuit and a gas circuit of the whole vehicle are disconnected, fault information is displayed on an instrument, and a signal is sent through an early warning lamp powered by an uninterrupted power supply UPS in a cab.

The hydrogenation machine 10 is provided with an emptying pipe 9, the emptying direction is upward, the pipe orifice is provided with a breathable cap for preventing rain water from entering and blocking sundries, the top end of the pipe orifice is provided with a flame arrester, the flame arrester is installed in the breathable cap, and when nitrogen is blown and swept, nitrogen and residual hydrogen are discharged from the emptying pipe 9.

A rate sensor and a second pressure sensor are installed in an air outlet pipe of the hydrogenation machine 10, the rate sensor and the second pressure sensor are electrically connected with the input end of the central processing unit 21, a worker can directly master the hydrogenation condition of the hydrogenation machine through an instrument in real time, a breaking valve 11 is installed at the tail end of the air outlet pipe of the hydrogenation machine 10, and the breaking valve 11 separates tension forces of 220N-660N. A fire extinguisher 12 is fixedly arranged beside the explosion-proof hydrogenation machine 10.

The tail part of the frame is provided with a static conductive connecting chain 14, when hydrogen is filled, a static conductive passage is formed among the frame, the bottom plate, the ground and a filling object of the hydrogenation frame, and the accumulation of static charges is avoided to form a dangerous ignition source; all metal parts on a vehicle larger than 100cm2 need to be attached to or maintain good metal contact with the vehicle frame to ensure potential balance. The vehicle tire adopts a static conductive tire to avoid the accumulation of static charge; the bottom of the vehicle is provided with an electrostatic conductive mopping adhesive tape 17. The vehicle is provided with an insulation monitoring device and is connected with the vehicle frame to monitor the leakage condition or periodically detect that the insulation resistance between the charged component and the workshop is not less than 0.5M omega.

The vehicle controls the circuit and the gas circuit of the whole vehicle through the central processing unit 21, displays and alarms, the electric circuit 20 connected with the central processing unit 21 is wired through the wire clamp arranged below the bottom plate, the electric circuit 20 passes through the wire through hole formed in the bottom plate 22, and ensures that the sealing device at the wire through hole can only enable a single cable to pass through, thereby playing the role of isolating the possibility of gas exchange between the upper space and the lower space through the wire through hole, effectively physically isolating the gas storage bottle above the vehicle frame, the electric components from the electric circuit and the junction box below the bottom plate, and avoiding the formation of a dangerous area below the vehicle frame.

The air source compressor for automobile braking and other purposes is arranged below a bottom plate 22, wherein a fuel tank 18 is arranged below the bottom plate 22 and in front of a gas storage bottle 3 and is arranged at a position where leaked hydrogen accumulation is relatively not formed, the fuel tank 18 is connected with an air inlet pipe of an explosion-proof engine 2, a flame arrester is arranged on the air inlet pipe connected with the explosion-proof engine 2, and a filling opening of the fuel tank 18 is provided with an air-tight sealing filling opening cover. The explosion-proof sign of the explosion-proof engine 2 is ExIICT 32G, an exhaust pipe 19 is arranged on the explosion-proof engine 2, the outlet of the exhaust pipe 19 is positioned below the frame and in front of the air storage tank 3 and faces the left side of the driving direction, a flame arrester is arranged in one side of the exhaust pipe 19 close to the explosion-proof engine 2, and a spark arrester is arranged at the tail end of the exhaust pipe 19. The electrical system voltage of the explosion-proof engine 2 should not be greater than 24V, and the electrical installation is arranged in a bipolar manner, but in the operating phase of the starting auxiliary circuit, the electrical circuit of the glow plug or other electrical starting auxiliary devices can be used as an exception, using the cylinder block of the internal combustion engine as a ground circuit. If no start assist device is used, both the positive and negative connections should be insulated from the engine block. The drive belt of the explosion-proof engine 2 adopts AV10 or AV13, and the corresponding maximum resistance of the drive belt cannot exceed 3.6M omega and 2.8M omega. The electrical wiring 20 is at least 100mm clear of a possible thermal surface of the explosion proof engine 2. The clear distance between the exhaust pipe 19 and the fuel tank 18 is at least 100mm or the fuel tank is insulated by adopting an insulating material, but the normal heat dissipation of the explosion-proof engine 2 cannot be influenced.

The storage battery is arranged below the explosion-proof engine cover, the wire harness connectors meet the requirement of IP54 protection grade, all the wire harness connectors are arranged below the bottom plate 22, if the wire harness connectors are required to be arranged above the bottom plate 22, the wire division is required to be carried out through the explosion-proof junction box with the explosion-proof mark of ExdIICT4 Gb, the junction box needs to be firmly fixed, and electric sparks caused by poor contact due to shaking in the running process of a vehicle are avoided. The circuit which is directly connected with the storage battery without passing through a main switch of the power supply needs to adopt an overheating fusing fuse mode to carry out overheating protection. The wires should have a protective coating that protects against corrosion and wear, but the sensor cable of the antilock braking system does not require additional protection. An emergency stop button 1 is arranged on an instrument panel of the vehicle, so that a circuit and a gas circuit of the whole vehicle can be turned off, and an emergency event can be prevented.

The material used for the friction part of the brake is non-metal and should not contain metal components. The temperature of the friction plate is measured by using a thermosensitive element which is placed at a position not more than 5mm (a new friction plate) below the friction surface of the non-metallic compound of the brake, and once the temperature exceeds 190 ℃, the central control unit and the display instrument 12 can control the brake system.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.