High-pressure gas conveying stainless steel pipe for hydrogen energy vehicle

Abstract

The invention relates to the technical field of hydrogen energy vehicle power systems, in particular to a high-pressure gas conveying stainless steel pipe for a hydrogen energy vehicle, which comprises a conveying pipe and a pipe sleeve, the conveying pipe is fixedly connected with the pipe sleeve in a penetrating manner, the side wall of the pipe sleeve is fixedly connected with a main body, and an electromagnetic valve is arranged in the conveying pipe; a leakage detection mechanism is arranged in the main body, the leakage detection mechanism is composed of a monitoring assembly and a processing assembly, the monitoring assembly comprises a functional cavity formed in the main body, four side plates are fixedly connected to the inner side wall of the functional cavity, a resistance coil is fixedly connected between every two corresponding side plates, the resistance coil is slidably connected with a conductive block, and the conductive block is fixedly connected with the processing assembly. And the processing assembly comprises a control cavity formed in the main body, and the two opposite inner side walls of the control cavity are fixedly connected with an electromagnet and a switch correspondingly. The conveying pipe has the advantages that leakage can be monitored all the time in the using process, the safety of the conveying pipe is guaranteed, and the better heat dissipation effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy vehicle power systems, and in particular to a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles. Background Art

[0002] Nowadays, most new energy vehicles use electricity as their energy source. However, there is more than one type of new energy vehicle. There are also hydrogen energy vehicles that use hydrogen as their energy source. They mainly rely on the combustion of hydrogen to increase the power of the vehicle. Since the only product after hydrogen combustion is water, the environmental performance of hydrogen energy vehicles is also remarkable. In hydrogen energy vehicles, the hydrogen transmission pipeline is the same as the oil pipeline in ordinary gasoline vehicles. It is an important component of the vehicle power system.

[0003] In the existing technology, due to the flammable and explosive properties of hydrogen, once a leak occurs in the transportation pipeline, it will inevitably have an impact on safety. If the pipeline leak cannot be discovered in time, the safety of the hydrogen energy vehicle will be greatly reduced. In addition, the temperature of high-pressure hydrogen may rise due to friction energy during transportation. If it is not cooled in time during transportation, there will also be safety risks. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles, comprising a delivery pipe and a pipe sleeve, wherein the delivery pipe and the pipe sleeve are fixedly connected through the delivery pipe, a main body is fixedly connected to the side wall of the pipe sleeve, and a solenoid valve is provided in the delivery pipe; A leak detection mechanism is provided in the main body, and the leak detection mechanism is composed of a monitoring component and a processing component. The monitoring component includes a functional cavity provided in the main body, and four side plates are fixedly connected to the inner side wall of the functional cavity, and a resistance coil is fixedly connected between two corresponding side plates, and the resistance coil is slidably connected to a conductive block. The processing component includes a control cavity provided in the main body, and an electromagnet and a switch are fixedly connected to the two opposite inner side walls of the control cavity, respectively, and two fixed resistors are fixedly connected to the inner side wall of the control cavity; The two opposite side walls of the main body are provided with a cooling mechanism, and the cooling mechanism includes a main side block and a secondary side block. The main side block and the secondary side block are respectively fixedly connected to the two opposite side walls of the main body, and the main side block and the secondary side block are both provided with an air cavity and a cavity; The main body, main side block and auxiliary side block are provided with a control mechanism; A collecting mechanism is provided in the secondary side block.

[0006] Furthermore, the monitoring component also includes two pressure tubes, which are fixedly connected to the main body and the delivery tube. Two liquid chambers are opened in the main body, and the functional chamber connects the two liquid chambers. One end of the pressure tube extends into the delivery tube, and the other end extends into the corresponding liquid chamber. A fixing ring is fixedly connected to the inner side wall of the pressure tube, and a main piston is sealingly and slidingly connected in the pressure tube. A spring is fixedly connected between the main piston and the fixing ring. Two secondary pistons are sealingly and slidingly connected in the functional chamber, and an insulating rod is fixedly connected between the secondary piston and the corresponding conductive block. Hydraulic oil is filled between the secondary piston and the corresponding main piston.

[0007] Furthermore, the processing component also includes a magnetic block, which is slidably connected in the control cavity. The electromagnet, conductive block, resistance coil, and fixed resistor are electrically connected through wires, and the switch and solenoid valve are electrically connected through wires.

[0008] Furthermore, the air cavity is connected with the cavity, and the cooling mechanism also includes an air pump, which is fixedly connected to the side wall of the main side block, and the output end of the air pump is fixedly connected to the main side block and extends into the air cavity. The main side block and the pipe sleeve are jointly fixedly connected with an air inlet pipe, and the air inlet pipe connects the cavity in the main side block with the pipe sleeve, and the secondary side block and the pipe sleeve are jointly fixedly connected with a processing pipe, and the processing pipe connects the cavity in the secondary side block with the pipe sleeve, and the secondary side block is fixedly connected with an exhaust pipe, and the exhaust pipe connects the air cavity in the secondary side block with the outside world, and the electromagnet, conductive block, resistance coil, fixed resistor, and air pump are electrically connected through wires.

[0009] Furthermore, the control mechanism includes a rotating block, which is sealed and slidably connected in the air cavity. The main side block and the auxiliary side block are respectively connected to the main body with a rotating shaft, one end of the rotating shaft extends into the functional cavity and is fixedly connected to a gear, and the other end extends into the corresponding air cavity and is fixedly connected to the rotating block. The rotating block is provided with a connecting hole, and a rack is fixedly connected to the lower surface of the conductive block, and the rack is engaged with the corresponding gear.

[0010] Furthermore, the collecting mechanism includes a plurality of heating wires, which are fixedly connected between the inner top wall and the inner bottom wall of the cavity in the secondary side block. The cavity in the secondary side block is filled with porous copper oxide particles. The heating wires are electrically connected to the switch through a wire.

[0011] Furthermore, the contact area between the primary piston and the hydraulic oil is greater than the contact area between the secondary piston and the hydraulic oil.

[0012] Furthermore, the pipe sleeve, main body, main side block and auxiliary side block are all made of polytetrafluoroethylene, and the outer walls are coated with an anti-static coating.

[0013] Furthermore, a plurality of heat-conducting fins are fixedly connected between the delivery pipe and the pipe sleeve.

[0014] Furthermore, the cross section of the magnetic block is in the shape of a cross, and a damping pad is provided at the sliding connection between the magnetic block and the inner side wall of the control cavity.

[0015] The present invention has the following advantages: 1. When the pipeline is in use, the pressure at both ends of the pipeline is applied to the main pistons, causing the two main pistons to slide accordingly. If there is no leakage in the pipeline, the sliding distances of the two main pistons are almost the same. If there is a leak in the middle of the pipeline, the sliding distances of the two main pistons will be significantly inconsistent. The leakage of the pipeline can be monitored by the sliding time of the main pistons to ensure safety. 2. When a leak occurs in the pipeline, the sliding distance between the main piston and the auxiliary piston becomes significantly inconsistent. At this time, the resistance difference between the two resistance coils connected to the circuit also becomes significantly inconsistent, which increases the voltage across the electromagnet. As a result, the magnetic block triggers the switch under the action of magnetic force, closing the solenoid valve and interrupting the hydrogen delivery to prevent further hydrogen leakage. 3. During the hydrogen transportation process, the air pump pumps in external gas, and the gas flows through the main side block, intake pipe, pipe sleeve, processing pipe, secondary side block, and exhaust pipe. When flowing in the pipe sleeve, it contacts with the heat-conducting fins and takes away the heat in the transportation pipe. During the hydrogen transportation process, the gas is cooled to ensure transportation safety. 4. When the delivery pressure is high, the sliding distance of the main piston is correspondingly large. At this time, the meshing of the rack and the gear causes the gear to drive the rotating block to rotate, and the rotation of the rotating block can increase the intake and exhaust area. At the same time, the main piston drives the conductive block to slide through the auxiliary piston, which also reduces the resistance of the resistance coil connected to the circuit, thereby increasing the voltage across the air pump, increasing the pumping speed of the air pump, and increasing the air intake volume. Then, the air circulation cooling speed can be automatically adjusted according to the delivery pressure to ensure the cooling effect; 5. Wrapping the delivery pipe with a pipe sleeve not only facilitates heat conduction, but also prevents hydrogen from leaking into the pipe sleeve instead of directly leaking into the external environment, thus preventing hydrogen from leaking directly into external substances and causing explosion risks. 6. When leakage occurs, the transportation is stopped and the heating wire is energized to heat the copper oxide in the cavity. At this time, hydrogen enters the cavity along with the air from the outside and comes into contact with the heated copper oxide, adsorbing the hydrogen, thus avoiding hydrogen leakage and further ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed in the present invention, as seen in a longitudinal section; Figure 3 for Figure 2 A magnified view of point A in the figure; Figure 4 This is a schematic diagram of the internal structure of a cross-section of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention; Figure 5 for Figure 4 Enlarged view of point B in FIG. Figure 6 This is a schematic diagram of the internal structure of another cross-section of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention; Figure 7 This is a schematic diagram of the internal structure of the main side block of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention; Figure 8 This is a schematic diagram of the internal structure of the secondary side block of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention; Figure 9 This is a schematic diagram of the circuit connection structure of a stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles proposed by the present invention.

[0017] In the figure: 1 delivery pipe, 2 pipe sleeve, 3 main body, 4 pressure pipe, 5 liquid chamber, 6 functional chamber, 7 auxiliary piston, 8 insulating rod, 9 conductive block, 10 side plate, 11 resistance coil, 12 fixing ring, 13 main piston, 14 spring, 15 solenoid valve, 16 control chamber, 17 switch, 18 electromagnet, 19 magnetic block, 20 fixed resistor, 21 thermal fin, 22 main side block, 23 air pump, 24 intake pipe, 25 auxiliary side block, 26 exhaust pipe, 27 process pipe, 28 rotating shaft, 29 gear, 30 rack, 31 air chamber, 32 cavity, 33 rotating block, 34 connecting hole, 35 heating wire. DETAILED DESCRIPTION

[0018] Reference Figure 1-9 A stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles, comprising a delivery pipe 1 and a pipe sleeve 2, wherein the delivery pipe 1 and the pipe sleeve 2 are fixedly connected through the delivery pipe 1, a main body 3 is fixedly connected to the side wall of the pipe sleeve 2, and a solenoid valve 15 is provided in the delivery pipe 1; A leak detection mechanism is provided in the main body 3, which is composed of a monitoring component and a processing component. The monitoring component includes a functional chamber 6 provided in the main body 3, four side plates 10 are fixedly connected to the inner wall of the functional chamber 6, a resistance coil 11 is fixedly connected between two corresponding side plates 10, and the resistance coil 11 is slidably connected to a conductive block 9. The processing component includes a control chamber 16 provided in the main body 3, an electromagnet 18 and a switch 17 are fixedly connected to the two opposite inner walls of the control chamber 16, and two fixed resistors 20 are fixedly connected to the inner wall of the control chamber 16; The two opposite side walls of the main body 3 are provided with a cooling mechanism, which includes a main side block 22 and a secondary side block 25. The main side block 22 and the secondary side block 25 are respectively fixedly connected to the two opposite side walls of the main body 3. The main side block 22 and the secondary side block 25 are both provided with an air cavity 31 and a cavity 32. The main body 3, the main side block 22, and the auxiliary side block 25 are provided with a control mechanism; A collecting mechanism is provided in the secondary side block 25 .

[0019] The monitoring component also includes two pressure tubes 4, which are fixedly connected to the main body 3 and the delivery tube 1. Two liquid chambers 5 are provided in the main body 3, and the functional chamber 6 connects the two liquid chambers 5. One end of the pressure tube 4 extends through the delivery tube 1, and the other end extends through the corresponding liquid chamber 5. A fixing ring 12 is fixedly connected to the inner wall of the pressure tube 4. A main piston 13 is sealed and slidably connected in the pressure tube 4. A spring 14 is fixedly connected between the main piston 13 and the fixing ring 12. Two auxiliary pistons 7 are sealed and slidably connected in the functional chamber 6. A hole is provided in the middle of the functional chamber 6 (such as Figure 2 As shown), the space between the two secondary pistons 7 is connected to the outside world, thereby ensuring that the secondary piston 7 can slide freely. An insulating rod 8 is fixedly connected between the secondary piston 7 and the corresponding conductive block 9. Hydraulic oil is filled between the secondary piston 7 and the corresponding main piston 13. During the use of the pipeline, hydrogen is transported through the delivery pipe 1. The pressure during hydrogen transportation will act on the main piston 13, and the main piston 13 will slide under the action of pressure. Then, through the action of hydraulic oil, the secondary piston 7 slides accordingly. The sliding of the secondary piston 7 will drive the conductive block 9 to slide through the insulating rod 8, so that the contact position between the conductive block 9 and the resistance coil 11 changes, and the change in contact position will change the resistance of the resistance coil 11 connected to the circuit. The pressure in the delivery pipe 1 is monitored by the main piston 13 and the secondary piston 7. Compared with the use of a pressure sensor, this monitoring method directly responds to the pressure, avoids complex calculations, and responds more quickly.

[0020] The processing assembly also includes a magnetic block 19, which is slidably connected to the control cavity 16. The electromagnet 18, the conductive block 9, the resistance coil 11, and the fixed resistor 20 are electrically connected through wires. The circuit connection relationship is as follows: Figure 9As shown, the electromagnet 18, the conductive block 9, the resistance coil 11, and the fixed resistor 20 form a bridge circuit. The voltage across the electromagnet 18 located in the bridge arm is determined by the difference in resistance between the two resistance coils 11 connected to the circuit. The larger the difference, the greater the voltage across the electromagnet 18. The switch 17 is electrically connected to the solenoid valve 15 through a wire. The solenoid valve 15 is a normally open solenoid valve and is closed when energized. If there is a leak in the pipeline, there will inevitably be a certain pressure loss due to the presence of the leak, so that the two main pistons 13 receive different pressures, and the difference in pressure will cause the sliding distances of the two main pistons 13 to be inconsistent, which ultimately leads to inconsistent sliding distances of the conductive block 9. There is a significant difference in the resistance between the two resistance coils 11 connected to the circuit, so that a larger voltage is applied to the electromagnet 18, and the magnetic repulsion force generated is sufficient to cause the magnetic block 19 to slide, causing the magnetic block 19 to trigger the switch 17. After the switch 17 is pressed, the solenoid valve 15 will be energized and closed, blocking the delivery pipe 1 and terminating the delivery. After the leak is detected, the hydrogen delivery is cut off immediately to avoid excessive leakage and safety impact.

[0021] The air cavity 31 is connected with the cavity 32, and the cooling mechanism also includes an air pump 23, which is fixedly connected to the side wall of the main side block 22. The output end of the air pump 23 is fixedly connected to the main side block 22 and extends into the air cavity 31. The main side block 22 and the pipe sleeve 2 are fixedly connected with an air inlet pipe 24, and the air inlet pipe 24 connects the cavity 32 in the main side block 22 with the pipe sleeve 2. The auxiliary side block 25 and the pipe sleeve 2 are fixedly connected with a processing pipe 27, and the processing pipe 27 connects the cavity 32 in the auxiliary side block 25 with the pipe sleeve 2. The auxiliary side block 25 is fixedly connected with an exhaust pipe 26, and the exhaust pipe 26 connects the air cavity 31 in the auxiliary side block 25 with the outside world. The electromagnet 18, the conductive block 9, the resistance coil 11, the fixed resistor 20, and the air pump 23 are electrically connected through wires, and the circuit connection is as follows Figure 9 As shown, when the resistance value of the resistance coil 11 connected to the circuit changes, the equivalent resistance of the circuit composed of the electromagnet 18, the conductive block 9, the resistance coil 11, and the fixed resistor 20 will also change accordingly. That is, when the resistance value of the resistance coil 11 connected to the circuit increases, the equivalent resistance will also increase accordingly. Conversely, the smaller the resistance of the connected circuit, the smaller the equivalent resistance. During the hydrogen transportation process, the air pump 23 will also pump external air into the main side block 22, and then enter the pipe sleeve 2 through the intake pipe 24. Heat is exchanged with the delivery pipe 1 through the heat-conducting fins 21 in the pipe sleeve 2, taking away the heat of the delivery pipe 1, and entering the secondary side block 25 through the processing pipe 27, and then discharged through the exhaust pipe 26 to cool the delivery pipe 1 to prevent the temperature from being too high.

[0022] It is worth mentioning that during the cooling process, when the pressure in the delivery pipe 1 increases, the main piston 13 will slide further as the pressure increases, thereby causing the secondary piston 7 to slide further. The secondary piston 7 will drive the conductive block 9 to slide further, reducing the resistance value of the resistance coil 11 connected to the circuit, thereby increasing the voltage across the air pump 23 and increasing the pump air speed.

[0023] The control mechanism includes a rotating block 33, which is sealed and slidably connected to the air passage cavity 31. The main side block 22 and the auxiliary side block 25 are respectively connected to the main body 3 through a rotating shaft 28. One end of the rotating shaft 28 extends through the functional cavity 6 and is fixedly connected to the gear 29. The other end extends through the corresponding air passage cavity 31 and is fixedly connected to the rotating block 33. The rotating block 33 is provided with a connecting hole 34 (such as Figure 7 and Figure 8 As shown in the figure, the cross section of the air cavity 31 is a structure with a center circle and two rectangular sides. When the connecting hole 34 rotates with the rotating block 33, the area facing the rectangular cross section of the air cavity 31 will change, thereby changing the area of gas passing through. The lower surface of the conductive block 9 is fixedly connected to the rack 30, and the rack 30 is engaged with the corresponding gear 29. The sliding of the conductive block 9 will also drive the rack 30 to move further. The movement of the rack 30 will cause the gear 29 to rotate. The rotation of the gear 29 drives the rotating block 33 to rotate through the rotating shaft 28. The rotation of the rotating block 33 will increase the area facing the connecting hole 34 and the air cavity 31, thereby increasing the air inlet area and the air outlet area. With the increase of the pumping speed, the air flow speed and flow amount are further increased, the heat dissipation effect is improved, and the heat dissipation of the pipeline and the pressure inside it can be freely changed, which greatly improves the degree of automation while ensuring good heat dissipation effect.

[0024] The collecting mechanism includes a plurality of heating wires 35, which are fixedly connected between the inner top wall and the inner bottom wall of the cavity 32 in the secondary side block 25. The cavity 32 in the secondary side block 25 is filled with porous copper oxide particles. Hydrogen and copper oxide can react at high temperatures to adsorb hydrogen, but at room temperature, the two do not react. The heating wires 35 are electrically connected to the switch 17 through a wire. When the switch 17 is pressed, the heating wires 35 are energized for heating. After heating, when hydrogen passes through the porous copper oxide particles, it reacts with the copper oxide to adsorb the hydrogen. The switch 17 is also connected to the vehicle's alarm system. When pressed, the driver is prompted to Otherwise, there is a leak in the pipeline and it is necessary to stop the vehicle for inspection in time. The leaked hydrogen will enter the pipe sleeve 2 instead of being discharged to the outside. Then, after the leak is detected, the switch 17 is pressed, on the one hand, the hydrogen delivery is stopped, and on the other hand, the heating wire 35 is also energized synchronously to heat the porous copper oxide particles in the cavity 32. At this time, when the air pump 23 drives the air flow, the leaked hydrogen will be pumped into the cavity 32 of the secondary side block 25, contacting the porous copper oxide particles inside it, and reacting at a certain temperature to adsorb the leaked hydrogen to prevent it from further leakage and causing safety hazards, thereby further improving the safety of transportation.

[0025] The contact area between the main piston 13 and the hydraulic oil is larger than the contact area between the secondary piston 7 and the hydraulic oil. By setting the contact area with the hydraulic oil, the sliding of the main piston 13 by a certain distance can cause the secondary piston 7 to slide by a larger distance, so that the slight sliding of the main piston 13 can also be reflected at the secondary piston 7, thereby improving the monitoring accuracy.

[0026] The pipe sleeve 2, the main body 3, the main side block 22, and the auxiliary side block 25 are all made of polytetrafluoroethylene, and the outer wall is coated with an anti-static coating. The polytetrafluoroethylene material not only has good corrosion resistance and strength, but also has good insulation properties. The design of the anti-static coating also avoids static electricity generated by friction, further ensuring safe use.

[0027] A plurality of heat conducting fins 21 (such as Figure 6 As shown), the contact area between the air and the delivery pipe 1 is increased by the provision of the heat-conducting fins 21. At the same time, the provision of the heat-conducting fins 21 causes the air to flow in a serpentine manner within the pipe sleeve 2, further increasing the contact time, thereby better exchanging heat with the delivery pipe 1 and taking away heat.

[0028] The cross section of the magnetic block 19 is a cross (e.g. Figure 2 As shown), a damping pad is provided at the sliding connection between the magnetic block 19 and the inner wall of the control chamber 16, and the "cross"-shaped magnetic block 19 can slide more freely. The setting of the damping pad makes the sliding of the magnetic block 19 have a certain friction force, making it slide slowly and smoothly.

[0029] In the present invention, when the pipeline is in use, hydrogen is transported through the delivery pipe 1. The pressure during hydrogen transportation will act on the main piston 13, and the main piston 13 will slide under the action of pressure. Then, through the action of hydraulic oil, the secondary piston 7 will slide accordingly. The sliding of the secondary piston 7 will drive the conductive block 9 to slide through the insulating rod 8, so that the contact position of the conductive block 9 and the resistance coil 11 changes, and the change in contact position will change the resistance of the circuit connected to the resistance coil 11.

[0030] When the pipeline is normal and there is no leakage, the pressure received by the two main pistons 13 is almost the same, so that the movement distance of the two conductive blocks 9 is almost the same, and the resistance of the two resistance coils 11 connected to the circuit is almost the same. At this time, since the resistance of the resistance coils 11 connected to the circuit is almost the same, the voltage across the electromagnet 18 is small, and the magnetic force of the electromagnet 18 is small, which is not enough to make the magnetic block 19 slide.

[0031] If there is a leak in the pipeline, there will inevitably be a certain pressure loss due to the existence of the leak, which will cause the two main pistons 13 to receive different pressures. The difference in pressure will cause the sliding distances of the two main pistons 13 to be inconsistent, which will ultimately lead to inconsistent sliding distances of the conductive block 9. There is an obvious difference in the resistance values of the two resistance coils 11 connected to the circuit, which will cause the electromagnet 18 to pass a larger voltage. The magnetic repulsion force generated is sufficient to make the magnetic block 19 slide, causing the magnetic block 19 to trigger the switch 17. After the switch 17 is pressed, the solenoid valve 15 will be energized and closed, blocking the delivery pipe 1 and terminating the delivery.

[0032] During the hydrogen transportation process, the air pump 23 will also pump external air into the main side block 22, and then enter the pipe sleeve 2 through the air inlet pipe 24, exchange heat with the delivery pipe 1 through the heat-conducting fins 21 in the pipe sleeve 2, take away the heat of the delivery pipe 1, and enter the secondary side block 25 through the processing pipe 27, and then be discharged through the exhaust pipe 26 to cool the delivery pipe 1.

[0033] During the cooling process, when the pressure in the delivery pipe 1 increases, the main piston 13 will slide further as the pressure increases, causing the secondary piston 7 to slide further. The secondary piston 7 will drive the conductive block 9 to slide further, reducing the resistance value of the resistance coil 11 connected to the circuit, thereby increasing the voltage across the air pump 23 and improving the pumping speed.

[0034] At the same time, the sliding of the conductive block 9 will also drive the rack 30 to move further, and the movement of the rack 30 will cause the gear 29 to rotate. The rotation of the gear 29 drives the rotating block 33 to rotate through the rotating shaft 28. The rotation of the rotating block 33 will increase the facing area between the connecting hole 34 and the air cavity 31, thereby increasing the air intake area and the air outlet area. In conjunction with the increase in the pumping speed, the air flow speed and flow volume are further increased, thereby improving the heat dissipation effect.

[0035] When there is a leak in the delivery pipe 1, the leaked hydrogen will enter the pipe sleeve 2 instead of being discharged to the outside. Then, after the leak is detected, the switch 17 is pressed, on the one hand, the hydrogen delivery is stopped, and on the other hand, the heating wire 35 is also energized simultaneously to heat the porous copper oxide particles in the cavity 32. At this time, when the air pump 23 drives the air flow, the leaked hydrogen will be pumped into the cavity 32 of the secondary side block 25, contacting the porous copper oxide particles inside, and reacting at a certain temperature to adsorb the leaked hydrogen.

Claims

1. A stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles, comprising a transport pipe (1) and a pipe sleeve (2), characterized in that: The delivery pipe (1) is fixedly connected to the pipe sleeve (2), the side wall of the pipe sleeve (2) is fixedly connected to the main body (3), and a solenoid valve (15) is provided in the delivery pipe (1); The main body (3) is provided with a leak detection mechanism, which is composed of a monitoring component and a processing component. The monitoring component includes a functional cavity (6) provided in the main body (3), four side plates (10) are fixedly connected to the inner wall of the functional cavity (6), a resistance coil (11) is fixedly connected between two corresponding side plates (10), and the resistance coil (11) is slidably connected to a conductive block (9). The processing component includes a control cavity (16) provided in the main body (3), an electromagnet (18) and a switch (17) are fixedly connected to the two opposite inner walls of the control cavity (16), and two fixed resistors (20) are fixedly connected to the inner wall of the control cavity (16); Two opposite side walls of the main body (3) are provided with a cooling mechanism, the cooling mechanism comprising a main side block (22) and a secondary side block (25), the main side block (22) and the secondary side block (25) being fixedly connected to the two opposite side walls of the main body (3), respectively, and an air cavity (31) and a cavity (32) being provided in the main side block (22) and the secondary side block (25); A control mechanism is provided in the main body (3), the main side block (22), and the auxiliary side block (25); A collecting mechanism is provided in the secondary side block (25).

2. A stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1, characterized in that: The monitoring assembly further comprises two pressure tubes (4), which are fixedly connected to the main body (3) and the delivery tube (1) through the pressure tubes (4). Two liquid chambers (5) are provided in the main body (3), and the functional chamber (6) connects the two liquid chambers (5). One end of the pressure tube (4) extends through the delivery tube (1), and the other end extends through the corresponding liquid chamber (5). A fixing ring (12) is fixedly connected to the inner wall of the pressure tube (4). A main piston (13) is sealingly and slidably connected in the pressure tube (4). A spring (14) is fixedly connected between the main piston (13) and the fixing ring (12). Two auxiliary pistons (7) are sealingly and slidably connected in the functional chamber (6). An insulating rod (8) is fixedly connected between the auxiliary piston (7) and the corresponding conductive block (9). Hydraulic oil is filled between the auxiliary piston (7) and the corresponding main piston (13).

3. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1 is characterized in that: The processing component further includes a magnetic block (19), which is slidably connected in the control chamber (16), the electromagnet (18), the conductive block (9), the resistance coil (11), and the fixed resistor (20) are electrically connected via a wire, and the switch (17) is electrically connected to the solenoid valve (15) via a wire.

4. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1, characterized in that: The air passage cavity (31) is connected to the cavity (32), and the cooling mechanism further includes an air pump (23), the air pump (23) is fixedly connected to the side wall of the main side block (22), the output end of the air pump (23) is fixedly connected to the main side block (22) and extends into the air passage cavity (31), the main side block (22) and the pipe sleeve (2) are fixedly connected to an air inlet pipe (24), the air inlet pipe (24) connects the cavity (32) in the main side block (22) with the pipe sleeve (2), and the auxiliary side The block (25) and the pipe sleeve (2) are both passed through and fixedly connected with a processing pipe (27), and the processing pipe (27) connects the cavity (32) in the secondary side block (25) with the pipe sleeve (2). The secondary side block (25) is passed through and fixedly connected with an exhaust pipe (26), and the exhaust pipe (26) connects the air cavity (31) in the secondary side block (25) with the outside world. The electromagnet (18), the conductive block (9), the resistance coil (11), the fixed resistor (20), and the air pump (23) are electrically connected through wires.

5. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1 is characterized in that: The control mechanism includes a rotating block (33), which is sealed and slidably connected in the air cavity (31). The main side block (22) and the auxiliary side block (25) are respectively connected to the main body (3) through a rotating shaft (28). One end of the rotating shaft (28) extends through the functional cavity (6) and is fixedly connected to a gear (29), and the other end extends through the corresponding air cavity (31) and is fixedly connected to the rotating block (33). The rotating block (33) is provided with a connecting hole (34). A rack (30) is fixedly connected to the lower surface of the conductive block (9), and the rack (30) is meshed with the corresponding gear (29).

6. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1 is characterized in that: The collecting mechanism comprises a plurality of heating wires (35), wherein the heating wires (35) are fixedly connected between an inner top wall and an inner bottom wall of a cavity (32) in the secondary side block (25), the cavity (32) in the secondary side block (25) is filled with porous copper oxide particles, and the heating wires (35) are electrically connected to a switch (17) via a wire.

7. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 2 is characterized in that: The contact area between the primary piston (13) and the hydraulic oil is greater than the contact area between the secondary piston (7) and the hydraulic oil.

8. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1 is characterized in that: The pipe sleeve (2), the main body (3), the main side block (22), and the auxiliary side block (25) are all made of polytetrafluoroethylene, and the outer walls are coated with an antistatic coating.

9. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 1, characterized in that: A plurality of heat-conducting fins (21) are fixedly connected between the delivery pipe (1) and the pipe sleeve (2).

10. The stainless steel pipe for transporting high-pressure gas for hydrogen energy vehicles according to claim 3, characterized in that: The cross section of the magnetic block (19) is in the shape of a cross, and a damping pad is provided at the sliding connection between the magnetic block (19) and the inner side wall of the control cavity (16).

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