Vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve

Abstract

The present invention discloses a vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve, comprising a valve body, wherein the valve body is provided with a flow stabilizing valve, a stop valve, a pressure reducing valve, a solenoid valve, a gas charging one-way valve, an overpressure safety valve, an overheating safety valve, an air release valve, a gas charging port filter element and a gas outlet filter element, a temperature sensor, and a bottle internal air pressure and output air pressure sensor interface, etc., wherein the components are arranged in the valve body and are connected by corresponding pipelines in the valve body, and the combination valve has the characteristics of high functional integration, high safety and high monitoring performance; the output flow rate fluctuates less; the output pressure can be adjusted according to the requirements of the fuel cell; during the period of stopping the gas supply, the pressure behind the pressure reducing valve is at low pressure, and the electromagnetic force to open the solenoid valve is small; when the hydrogen storage bottle is over-pressured and over-temperatured, the corresponding over-pressure and over-heating safety valves are actuated to discharge the high-pressure hydrogen in the bottle to the outside to avoid over-pressure explosion; the bottle internal air pressure, temperature and output pressure can be monitored at any time.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to a vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve. Background Art

[0002] To improve mileage and overall vehicle performance, the hydrogen pressure of on-board hydrogen storage bottles has reached 70 MPa. This requires high safety, high functional integration, and high monitoring capabilities of the bottle valves. Currently used bottle valves both domestically and internationally suffer from large fluctuations in output flow, which is undesirable for fuel cells. Furthermore, an external pressure reducing valve is required, which increases connection complexity and leaks. Furthermore, if multiple hydrogen storage bottles are connected to a single pressure reducing valve, any valve failure requires stopping the vehicle for inspection or replacement, which is both troublesome and time-consuming. The present invention is designed to address the aforementioned technical deficiencies of conventional on-board ultra-high-pressure hydrogen storage bottle combination valves. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the hydrogen storage bottle valves in high-pressure hydrogen energy fuel cell vehicles in the prior art, and to provide an on-board ultra-high-pressure hydrogen storage bottle combination valve with the advantages of safety, functional integration and high monitoring.

[0004] The specific technical solution adopted by the present invention to solve the above-mentioned technical problems is a vehicle-mounted ultra-high-pressure hydrogen storage bottle combination valve, including a valve body, in which are arranged a flow stabilizing valve, a shut-off valve, a pressure reducing valve, a solenoid valve, an air charging one-way valve, an overpressure safety valve, an overheating safety valve, a vent valve, an air charging port filter element, an air outlet filter element, a temperature sensor, and an interface for a bottle internal air pressure and an output air pressure sensor; during inflation, high-pressure hydrogen opens the inflation one-way valve through the air charging port filter element, and inflates the hydrogen storage bottle through the corresponding channel in the valve body; during gas supply, the high-pressure hydrogen in the hydrogen storage bottle is supplied to the fuel cell through the air supply port filter element, the flow stabilizing valve, the shut-off valve, the pressure reducing valve, the solenoid valve and the air outlet filter element; the flow stabilizing valve is used to reduce the fluctuation of the output flow, and the pressure reducing valve is used to adjust the output pressure so that it meets the requirements of the fuel cell.

[0005] The working principle of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention is (see Figure 1): When the hydrogen storage bottle is inflated, the solenoid valve is closed, and the high-pressure hydrogen is first filtered through the filling port filter to prevent impurities from entering the hydrogen storage bottle, and then enters the hydrogen storage bottle through the filling check valve. The function of the filling check valve is to prevent the hydrogen from flowing out in reverse when the gas supply is stopped to maintain the pressure; the high-pressure hydrogen in the hydrogen storage bottle is connected to the overheating safety valve, overpressure safety valve, vent valve, bottle pressure sensor, output pressure sensor and bottle temperature sensor through the corresponding pipes in the valve body; the function of the overheating safety valve is that when the temperature of the combination valve rises to 110±5℃ due to the increase in ambient temperature (such as vehicle combustion), the overheating protection device will be activated to discharge the high-pressure hydrogen in the bottle to the outside to prevent the hydrogen storage bottle from overheating and overpressure and explosion; the function of the overpressure safety valve is that when the inflation pressure is higher than 7 0MPa, or when the air pressure in the bottle exceeds 70MPa due to an increase in external temperature, it will automatically open to vent air; the function of the vent valve is that when the pressure reducing valve or solenoid valve fails and cannot supply gas to the fuel cell, the vent valve can be manually opened to discharge the high-pressure hydrogen in the bottle to the outside or into other containers; the air pressure sensor in the bottle is used to observe the pressure of the hydrogen in the bottle. When the air pressure drops below the minimum working pressure, it should be inflated in time. When the inflation pressure reaches 70MPa, inflation should be stopped; the output pressure sensor is used to observe whether the output pressure meets the requirements of the fuel cell; the air temperature sensor in the bottle is used to observe the temperature of the hydrogen in the bottle. The normal temperature range is -40℃ to 85℃. When the temperature exceeds the limit, it should be checked in time to see if there are any accidents or inappropriate operations.

[0006] When the hydrogen storage bottle supplies hydrogen to the fuel cell, the solenoid valve opens, and hydrogen flows through the inlet filter, the constant flow valve, the shutoff valve, the pressure reducing valve, the solenoid valve, and the outlet filter to the fuel cell. The constant flow valve controls fluctuations in the output flow, which is required by the fuel cell. Furthermore, if the flow rate is too high, the valve automatically closes, allowing only a limited flow rate to be output through the small orifice. The shutoff valve closes to stop the gas supply when the pressure reducing valve or solenoid valve is under repair, the outlet filter is replaced, or if downstream equipment malfunctions. The pressure reducing valve reduces the high-pressure hydrogen in front of the valve to the low pressure required by the fuel cell, and maintains the low pressure behind the valve during the supply interruption to reduce the electromagnetic force required to open the solenoid valve. The solenoid valve opens and closes the hydrogen supply to the fuel cell. The outlet filter prevents impurities from entering the fuel cell.

[0007] Preferably, the valve body consists of two mutually perpendicular parts, the upper part is a rectangular parallelepiped, and the lower part is a stepped cylinder. The external thread of the upper cylinder is screwed into the internal thread above the mouth of the hydrogen storage bottle, and the lower cylinder is slidably fitted with the inner hole below the bottle mouth. An O-ring and a retaining ring are provided in the annular groove of the lower cylinder. The various components are arranged in the valve body and connected by corresponding channels in the valve body. The channel openings are sealed by steel balls and sealing screws.

[0008] Preferably, a stepped longitudinal hole is provided above one side of the lower cylinder, the longitudinal hole is parallel to the axis of the lower cylinder and is eccentrically arranged, a steady flow valve is provided in the small hole, the hydrogen in the hydrogen storage bottle is sent to the steady flow valve through the air inlet hole, the lower end of the air inlet hole is provided with an air supply port filter element, and is positioned by a retaining ring 2; the steady flow valve includes a steady flow valve core, a spring 1 and a tapered hole on the lower end face of the upper stop valve sleeve, the center lines of each part are on the same axis, the large diameter of the lower part of the steady flow valve core is matched with the corresponding hole in the valve body, and there are two annular balancing grooves on the outer diameter, the top of the upper small shaft is a cone, the cone angle of the cone is the same as the taper of the cone hole on the lower end face of the stop valve sleeve, and the two form the valve port of the steady flow valve, the bottom center of the steady flow valve core is provided with a bottom hole, four radial holes 1 are provided on the wall of the bottom hole, and a through small hole is provided at the top of the bottom hole; the spring 1 is arranged between the shoulder of the large diameter shaft and the lower end face of the stop valve sleeve.

[0009] Preferably, a stop valve is provided in the large hole of the stepped longitudinal hole, and the stop valve includes a stop valve sleeve, a stop valve core and a locking nut. The center line of each part is consistent with the center line of the flow-stabilizing valve. The outer diameter of the stop valve sleeve is small at the two ends and large in the middle. The cylinder of the lower section is slidably fitted in the corresponding hole of the valve body, and is provided with an O-ring 2 and an O-ring 3. The external thread of the middle section is screwed with the corresponding internal thread in the valve body. There is a stepped through hole in the center and a tapered hole in the center of the lower end face. The internal thread in the upper hole of the stepped through hole is screwed with the external thread of the stop valve core. Screw on, the middle hole and the valve stem of the stop valve core are slidably matched, and are provided with O-ring four and retaining ring three. The lower end of the valve stem of the stop valve core is a frustum, and the taper of the frustum is the same as the taper of the tapered hole at the bottom end of the middle hole of the stop valve sleeve. The two constitute the valve port of the stop valve, which is usually open and locked by a locking nut one. Four evenly distributed radial holes two communicating with the middle hole are provided on the cylinder wall of the lower section of the stop valve sleeve, and the outer opening of the radial hole two is provided with an annular groove; an O-ring five is provided between the lower end face of the stop valve sleeve and the end face of the corresponding hole in the valve body.

[0010] Preferably, a pressure reducing valve is provided at the lower right side of the valve body rectangular parallelepiped, and the pressure reducing valve comprises a right valve sleeve, a left valve sleeve, a pressure reducing valve seat, a sliding valve, a universal plug ring, a diaphragm, a spring 2, a gasket and a locking nut 2, and the center lines of each part are on the same axis; the external thread at the right end of the right valve sleeve is screwed into the corresponding internal thread in the valve body and fixed by a tapered screw, the external cylinder at the left end is slidably fitted in the corresponding hole in the valve body, and is provided with an O-ring 6, there is a stepped blind hole in the center of the left side, 4 evenly distributed radial holes 4 are provided on the cylinder wall, and the outer mouth of the radial hole 4 is provided with an annular groove; the outer shape of the left valve sleeve is stepped, with a diameter larger on the right and smaller on the left, pits are provided in the centers of the left and right cylinders, and a partition wall is in the middle of the two pits, the right cylinder is slidably fitted in the corresponding hole in the valve body, and is provided with two O-rings 7, and the right cylinder Four evenly distributed radial holes five are provided on the cylinder wall, and the outer openings of the radial holes five are provided with an annular groove; four evenly distributed radial holes three are provided on the cylinder wall of the left cylinder, and a universal plug ring is provided in the groove of the inner hole of the partition wall; the outer circle of the right shoulder of the pressure reducing valve seat is smoothly fitted into the inner hole of the left pit of the left sliding sleeve, and the middle part of the right end is a convex sphere, which together with the tapered hole at the left end of the slide valve forms the valve port of the pressure reducing valve seat. The material hardness of the pressure reducing valve seat is lower than that of the slide valve; the valve stem in the middle section of the slide valve is slidably fitted into the inner hole of the universal plug ring, and two locking nuts two are used on the right end to press the inner ring of the diaphragm sandwiched between the two gaskets against the shoulder of the valve stem to make it become one. The left end has a flange with a larger diameter, a through hole in the center, and a tapered hole at the left end of the through hole; spring two is arranged between the right end face of the partition wall and the gasket.

[0011] As a preference, a solenoid valve is provided at the upper right side of the valve body rectangular parallelepiped, and the solenoid valve includes an electromagnet, a solenoid valve seat and an air outlet filter element, etc. The center lines of all parts are on the same axis, the barrel of the electromagnet slides into the corresponding hole of the valve body, and is provided with an O-ring eight, which is positioned by a retaining ring four, and the outgoing cable passes through the corresponding hole on the side of the rectangular parallelepiped and is fixed by a wire sealing joint; a sealing gasket is provided in the blind hole at the front end of the electromagnet moving iron core, and forms the solenoid valve port with the annular blade edge of the cone at the left end of the solenoid valve seat; the moving iron core There are two through longitudinal holes on the surface of the cylinder. The solenoid valve seat is screwed into the corresponding screw holes of the valve body rectangle. The cylinder with a slightly smaller diameter in the middle part is slid into the corresponding hole and is provided with an O-ring nine. There is a small frustum at the left end. The right end of the center hole is a screw hole, which is connected to the joint of the outlet pipe. The left end is an axial hole and the middle is a flat cylindrical hole. The hole is provided with an outlet filter element and is positioned by a retaining ring. The axial hole and the flat cylindrical hole are connected through a tapered hole. After the solenoid valve seat is adjusted, it is tightened by the tapered end screw.

[0012] As a preference, the overpressure safety valve and the overheat safety valve are arranged in the upper left corner of the rectangular parallelepiped, and the two are designed as one body, including a safety valve sleeve, a safety valve core, three springs, a piston, a fuse block, an adjusting stud and three locking nuts, and the center lines of each part are located on the same axis; the external thread of the safety valve sleeve is screwed into the internal thread of the corresponding hole, the lower cylinder is slidably fitted with the corresponding hole, a sealing ring is provided on the shoulder of the outer periphery of the bottom end, a stepped hole is provided in the center, an internal thread is provided in the large hole of the stepped hole, and a piston is slidably fitted in the small hole; the upper plane of the lower cone of the safety valve core is screwed into the corresponding hole, and the inner thread of the stepped hole is screwed into the small hole; the upper plane of the lower cone of the safety valve core is screwed into the corresponding hole, and the inner thread of the stepped hole is screwed into the small hole; the upper plane of the lower cone of the safety valve core is screwed into the corresponding hole, and the inner thread of the stepped hole is screwed into the small hole; the upper plane of the lower cone of the safety valve core is screwed into the corresponding hole; the upper plane of the lower cone of the safety valve core is screwed into the inner thread of ... A spring three is provided between the lower end faces of the pistons. The taper of the cone at the lower end of the safety valve core is the same as the taper of the chamfer above the center hole of the bottom wall of the safety valve sleeve, and the two constitute the valve port of the safety valve; the handle end of the safety valve core is loosely fitted in the blind hole at the bottom end of the piston; the external thread of the adjusting stud is screwed into the internal thread of the large hole of the safety valve sleeve, with an inner hexagonal hole at the top and a pit at the bottom, a fuse block is provided in the pit, and a connecting hole is provided in the center. Four evenly distributed through holes are provided on the wall of the safety valve sleeve, and an annular groove is provided on the outer diameter of the outer opening of the through hole, which is connected to the air discharge hole.

[0013] Preferably, the inflation one-way valve is arranged in the middle and lower part of the left side of the cuboid, the inflation one-way valve includes an inflation valve sleeve, a spring four, and an inflation valve core, and the center lines of each part are on the same axis; the external thread on the large diameter of the inflation valve sleeve is screwed with the corresponding internal thread on the cuboid, and the small diameter is slidably matched with the corresponding hole, and is provided with an O-ring ten, the left end of the axial hole in the center of the inner hole is a stepped hole, the large hole is provided with an internal thread, and an inflation port filter element is installed in the small hole and positioned by a retaining ring, a groove is provided at the bottom of the hole at the right end of the axial hole, and an inflation valve core is dynamically provided in the hole, the left end of the inflation valve core is a frustum, the taper of the frustum is the same as the taper of the chamfer at the right end of the axial hole, the two form the valve port of the one-way valve, a spring four is provided in the blind hole in the center, four evenly distributed through holes are provided on the barrel wall of the left end of the blind hole, four evenly distributed through holes are provided on the barrel wall of the inflation valve sleeve, and an annular groove is provided on the outer circle of the outer opening of the through hole.

[0014] Preferably, the air release valve is arranged at the lower left side of the rectangular parallelepiped, and includes an air release valve seat, a screw, an air release valve core, a spring five and a locking nut four, and the center lines of each part are located on the same axis; the external thread on the large diameter of the air release valve seat is screwed into the internal thread of the corresponding hole, the small cylinder is slidably matched with the corresponding hole, an O-ring eleven is provided on the shoulder blade at the top, the diameters of the two ends of the inner hole are large and the diameter in the middle is small, an annular groove is provided at the bottom of the upper hole, and an air release valve core is installed in the hole, and the taper of the cone at the lower end of the air release valve core is the same as the chamfer above the small hole in the middle section The taper of the two is the same, and the two form the valve port of the air release valve. A spring five is provided in the blind hole of the air release valve core, and four evenly distributed through holes are provided on the cylinder wall at the bottom of the blind hole; the internal thread in the lower hole is screwed into the external thread of the screw, and the small cylinder above the screw is slidably matched with the small hole in the middle section of the air release valve seat, and is provided with an O-ring twelve. The top surface of the top small shaft is opposite to the top surface of the cone of the air release valve core, and they are usually not in contact; four evenly distributed through holes are provided in the middle of the cylinder wall of the air release valve seat, and an annular groove is provided on the outer diameter of the outer opening of the through hole, which is connected to the air release hole.

[0015] Preferably, a longitudinal hole and a transverse hole are further provided on the other side of the valve body cylinder. The lower end of the longitudinal hole is screwed to a temperature sensor and sealed by a sealing gasket. Its wires pass through the longitudinal hole and the transverse hole to the outside of the combination valve and are fixed by a wire sealing joint.

[0016] The beneficial effects of the present invention are: effectively solving the shortcomings of the bottle valve in the prior art, with high functional integration, reducing connection troubles and leakage points; the output flow fluctuation is small; the output pressure can be adjusted according to the requirements of the fuel cell; during the period of stopping the gas supply, the pressure behind the pressure reducing valve is at low pressure, and the electromagnetic force to open the solenoid valve is small; it has the characteristics of compact structure, complete functions and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a working principle diagram of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention;

[0018] Figure 2 It is a longitudinal cross-sectional view of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention;

[0019] Figure 3 It is a transverse cross-sectional view of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention.

[0020] Figure: 1. Valve body, 2. O-ring 4, 3. Retainer ring 3, 4. Stop valve core, 5. Lock nut 1, 6. Stop valve sleeve, 7. Sealing screw, 8. Steel ball, 9. Flow stabilizing valve core, 10. Spring 1, 11. Retainer ring 1, 12. O-ring 1, 13. Retainer ring 2, 14. Air supply filter element, 15. Temperature sensor, 16. Sealing gasket, 17. O-ring 5, 18. Wire sealing connector, 19. O-ring 2, 20. O-ring 3, 21. Left valve sleeve, 22. O-ring Ring seven, 23. Diaphragm, 24. Right valve sleeve, 25. Lock nut two, 26. Gasket, 27. O-ring six, 28. Cone-end screw, 29. Spring two, 30. Sliding valve, 31. Connector, 32. Filter element, 33. Universal plug ring, 34. Pressure reducing valve seat, 35. Spring five, 36. Screw, 37. Lock nut four, 38. O-ring twelve, 39. Deflation valve seat, 40. Deflation valve core, 41. O-ring eleven, 42. O-ring ten, 43. Spring four, 44. Inflation valve core , 45. Inflatable port filter element, 46. Inflatable valve sleeve, 47. Safety valve core, 48. Spring three, 49. Safety valve sleeve, 50. Piston, 51. Fuse block, 52. Lock nut three, 53. Adjusting stud, 54. Electromagnet, 55. O-ring eight, 56. Retaining ring four, 57. O-ring nine, 58. Solenoid valve seat, 59. Outlet filter element, 60. Electromagnet spring, a. Air inlet, b. Bottom hole, c. Radial hole one, d. Through hole, e. Radial hole two, f. Annular groove, g. Through hole 1. h. Ring groove, i. Radial hole three, j. Radial hole four, k. Through hole two, l. Radial hole five, m. Through hole three, n. Air hole, p. Axial hole, z1. Longitudinal hole, z2. Radial hole, A1. First connecting hole, A2. Second connecting hole, B1. Air outlet hole, B2. Inflating hole, B3. Bleeding hole, B4. Release hole, V1. Flow regulating valve port, V2. Stop valve port, V3. Pressure reducing valve port, V4. Solenoid valve port, V5. Safety valve port, V6. Check valve port, V7. Release valve port. DETAILED DESCRIPTION

[0021] The embodiments of the present invention will be further described below with reference to examples and accompanying drawings.

[0022] Example 1

[0023] The working principle of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention is as follows: Figure 1As shown, when the hydrogen storage bottle is inflated, the solenoid valve is closed, and the high-pressure hydrogen is first filtered through the inflation port filter element to prevent impurities from entering the hydrogen storage bottle, and then enters the hydrogen storage bottle through the inflation one-way valve. The function of the inflation one-way valve is to prevent the hydrogen from flowing out in the opposite direction when the gas supply is stopped, so as to maintain the pressure; the high-pressure hydrogen in the hydrogen storage bottle is connected to the overheating safety valve, overpressure safety valve, vent valve, bottle pressure P0 sensor, output pressure P sensor, and bottle temperature T sensor through the corresponding pipeline in the valve body; the function of the overheating safety valve is that when the temperature of the combination valve rises to 110±5℃ due to the increase in ambient temperature (such as vehicle combustion), the overheating protection device is activated to discharge the high-pressure hydrogen in the bottle to the outside to prevent the hydrogen storage bottle from overheating and overpressure and explosion; the function of the overpressure safety valve is that when the inflation pressure When the pressure is higher than 70MPa, or the air pressure in the bottle exceeds 70MPa due to an increase in external temperature, it will automatically open to release air; the function of the air release valve is that when the pressure reducing valve or solenoid valve fails and cannot supply gas to the fuel cell, the air release valve can be manually opened to discharge the high-pressure hydrogen in the bottle to the outside or into other containers; the air pressure sensor in the bottle is used to observe the pressure of the hydrogen in the bottle. When the air pressure drops below the minimum working pressure, it should be inflated in time. When the inflation pressure reaches 70MPa, inflation should be stopped; the output pressure sensor is used to observe whether the output pressure meets the requirements of the fuel cell; the air temperature sensor in the bottle is used to observe the temperature of the hydrogen in the bottle. The normal temperature range is -40℃ to 85℃. When the temperature exceeds the limit, it should be checked in time to see if there are any accidents or inappropriate operations.

[0024] When the hydrogen storage bottle supplies hydrogen to the fuel cell, the solenoid valve opens, and hydrogen flows through the inlet filter, the constant flow valve, the shutoff valve, the pressure reducing valve, the solenoid valve, and the outlet filter to the fuel cell. The constant flow valve controls fluctuations in the output flow, which is required by the fuel cell. Furthermore, if the flow rate is too high, the valve automatically closes, allowing only a limited flow rate to be output through the small orifice. The shutoff valve closes to stop the gas supply when the pressure reducing valve or solenoid valve is under repair, the outlet filter is replaced, or if downstream equipment malfunctions. The pressure reducing valve reduces the high-pressure hydrogen in front of the valve to the low pressure required by the fuel cell, and maintains the low pressure behind the valve during the supply interruption to reduce the electromagnetic force required to open the solenoid valve. The solenoid valve opens and closes the hydrogen supply to the fuel cell. The outlet filter prevents impurities from entering the fuel cell.

[0025] The structure of the vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve of the present invention is shown in FIG. Figure 2 and Figure 3It has the characteristics of high functional integration, high safety and high monitoring, and is composed of a valve body 1, an inflation port filter element 45, a flow stabilizing valve, a shut-off valve, a pressure reducing valve, a solenoid valve, an inflation valve, an air release valve, an overheat safety valve, an overpressure safety valve, a temperature sensor, a first connecting hole A1 and a second connecting hole A2 for connecting the bottle pressure and output port pressure sensors, an air outlet hole B1, an inflation hole B2, a discharge hole B3 and an air release hole B4. All components are arranged in the valve body 1, and are connected by corresponding channels in the valve body 1 according to design requirements. The openings of each channel are blocked by a stainless steel ball 8 and a sealing screw 7. The valve body 1 is made of high-strength aluminum alloy, so it is lightweight. It consists of two perpendicular parts, the upper part is a rectangular parallelepiped, and the lower part is basically a stepped cylinder. The external thread above the stepped cylinder screws into the internal thread above the mouth of the hydrogen storage bottle, and the lower cylinder below the stepped cylinder slides into the inner hole below the mouth of the bottle. An O-ring 12 and a retaining ring 11 are provided in the groove of the lower cylinder. The retaining ring 11 is used to prevent high-pressure hydrogen from squeezing the O-ring 12 into the fitting gap. A stepped longitudinal hole is provided above one side of the lower cylinder axis. The axis of the stepped longitudinal hole is OO, parallel to the axis of the lower cylinder, and the longitudinal hole is offset relative to the axis of the lower cylinder (the offset is Figure 2 Its position on the plane of the cuboid is marked as D in Figure 3 A shut-off valve is provided in the large hole of the stepped longitudinal hole, and a flow stabilizing valve is provided in the small hole. The hydrogen in the hydrogen storage bottle is sent to the flow stabilizing valve through the air inlet a. The center line of the air inlet a is consistent with the center line of the stepped longitudinal hole. The lower end of the air inlet a is provided with an air delivery filter element 14 and is positioned by a retaining ring 13.

[0026] The steady flow valve consists of a steady flow valve core 9, a spring 10 and a tapered hole on the lower end surface of the stop valve sleeve 6, and the center lines of all parts are on the same axis; the large diameter of the lower part of the steady flow valve core 9 is dynamically matched with the corresponding hole in the valve body 1, and there are two annular balance grooves on the outer diameter to balance the lateral force generated by the high-pressure gas. The top of the upper small shaft is a frustum, and the cone angle of the frustum is the same as the taper of the tapered hole on the lower end surface of the stop valve sleeve 6. The two constitute the valve port V1 of the steady flow valve. A bottom hole b is provided at the center of the bottom end of the steady flow valve core 9, and four evenly distributed radial holes c are provided on the wall of the bottom hole b to deliver the pressurized gas to the valve port V1 of the steady flow valve. A through hole d is drilled at the top of the bottom hole b, and a spring 10 is arranged between the shoulder of the large diameter shaft and the lower end surface of the stop valve sleeve 6. The working principle of the flow stabilizing valve is that high-pressure hydrogen enters the flow stabilizing valve port V1 through the air supply filter element 14, the air inlet hole a, the bottom hole b and the radial hole c. The flow through the flow stabilizing valve port V1 depends on the opening size of the flow stabilizing valve port V1, and the opening size depends on the pressure difference at both ends of the valve core 9. When the flow through the flow stabilizing valve port V1 exceeds the set flow, due to the throttling and pressure reduction effect of the flow stabilizing valve port V1, the pressure difference at both ends of the valve core 9 increases, overcoming the pressure of the spring 10 and moving upward, reducing the opening of the flow stabilizing valve port V1, thereby reducing the flow rate to the set value; conversely, when the flow rate decreases, the pressure difference at both ends of the valve core 9 decreases, and under the push of the spring 10, it moves downward, increasing the opening of the flow stabilizing valve port V1, thereby increasing the flow rate to the set value; when the flow rate increases significantly, the flow stabilizing valve port V1 is closed, and the hydrogen outputs a limited amount through the through-hole d.

[0027] The stop valve is composed of a stop valve sleeve 6, a stop valve core 4 and a locking nut 5. The center line of each part is consistent with the center line of the steady flow valve. The outer diameter of the stop valve sleeve 6 is small at both ends and large in the middle. The cylindrical slide of the lower section is fitted in the corresponding hole of the valve body 1 and is provided with an O-ring 2 19 and an O-ring 3 20. The external thread of the middle section is screwed with the corresponding internal thread in the valve body 1. There is a stepped through hole in the center and a tapered hole in the center of the lower end face. The internal thread in the upper hole of the stepped through hole is screwed with the external thread of the stop valve core 4. The middle hole It is slidably matched with the stem of the stop valve core 4 and is provided with an O-ring 4 2 and a retaining ring 3 3. The lower end of the stem of the stop valve core 4 is a frustum. The taper of the frustum is the same as the taper of the cone hole at the bottom end of the hole in the stop valve sleeve 6. The two constitute the stop valve port V2. The stop valve port V2 is usually open and locked by a lock nut 1 5. Four evenly distributed radial holes 2 e are drilled on the wall of the lower section of the stop valve sleeve 6 and communicate with the center hole. The outer mouth of the radial hole 2 e is provided with an annular groove f to allow hydrogen to pass through the through hole 1 g and the annular groove h (see Figure 3 ) is sent to the pressure reducing valve; when the stop valve needs to be closed, the locking nut 1 5 can be loosened, and then the stop valve core 4 is screwed in to close the stop valve port V2; an O-ring 5 17 is provided between the lower end face of the stop valve sleeve 6 and the corresponding end face of the valve body 1, and the opening of the flow stabilizing valve port V1 can be fine-tuned by rotating the stop valve sleeve 6.

[0028] The pressure reducing valve is located at the lower right side of the rectangular body of valve body 1 (see Figure 3 ), consists of a right valve sleeve 24, a left valve sleeve 21, a valve seat 34, a slide valve 30, a flooded ring 33, a diaphragm 23, a spring 29, a gasket 26 and a lock nut 25, etc. The center lines of all parts are on the same axis; the external thread on the right end of the right valve sleeve 24 is screwed with the corresponding internal thread of the valve body 1, and the outer cylinder on the left end is slidably fitted in the corresponding hole of the valve body 1 and is provided with an O-ring 6 27. There is a stepped blind hole in the center of the left side, and four evenly distributed radial holes 4j are drilled on the wall of the blind hole. An annular groove is formed at the outer mouth of the radial hole 4j to send the decompressed hydrogen through the through hole 2k to the Solenoid valve; The outer shape of the left valve sleeve 21 is stepped, with a larger diameter on the right and smaller on the left. There are pits in the centers of the left and right cylinders. The middle of the two pits is a partition wall w. The right cylinder slides into the corresponding holes in the valve body 1 and has two O-rings 3 22. Four evenly distributed radial holes 5 l are drilled on the wall of the right cylinder. An annular groove is formed at the outer mouth of the radial hole 5 l so that the right pit communicates with the outside world through the through hole 3 m, the filter element 32 and the air hole n on the joint 31 to avoid affecting the movement of the slide valve 30; Four evenly distributed radial holes 3 i are drilled on the wall of the left cylinder, and a pan-plug ring is provided in the groove of the inner hole of the partition wall w. 33. The skeleton of the pan seal ring 33 is made of stainless steel, and the material of the surrounding outer skin is polytetrafluoroethylene. The friction coefficient between it and steel is 0.02. Its shape and structure are similar to a U-shaped sealing ring, and it has good self-sealing performance. The outer roundness of the right shoulder of the sliding seat 34 is smoothly fitted into the inner hole of the left pit of the left sliding sleeve 21. The middle of the right end is a convex ball, which together with the tapered hole on the left end of the sliding valve 30 forms the valve port V3 of the pressure reducing valve. Since the material of the sliding seat 34 is softer than that of the sliding valve 30, when the valve port V3 of the pressure reducing valve is closed at a slightly higher pressure, the ball on the right end of the valve seat 34 is slightly deformed, making the seal more reliable. The valve stem in the middle section of the valve slides into the inner hole of the universal seal ring 33. Two locking nuts 25 are used on the right end to press the inner ring of the diaphragm 23, which is sandwiched between two gaskets 26, against the shoulder of the valve stem, making it a whole. The left end has a flange with a larger diameter to limit its rightward movement. There is a through hole in the center, and a tapered hole on the left end of the through hole. Spring 29 is set between the right end face of the partition wall w and the gasket 26. Tightening the threads of the right valve sleeve 24 can press the valve seat 34 against the bottom plane of the corresponding hole and press the outer ring of the diaphragm 23 between the right valve sleeve 24 and the left valve body 21. The working principle of the pressure reducing valve is as follows: When the solenoid valve (see the figure) located on the upper right side of the rectangular parallelepiped of the valve body 1 Figure 3) When the solenoid valve is closed and the air supply is stopped, the air pressure in the right chamber of the diaphragm 23 increases, overcoming the pressure of the spring 29 to push the slide valve 30 to the left, closing the valve port V3 of the pressure reducing valve. Therefore, the downstream of the valve port V3 of the pressure reducing valve is at low pressure. When the solenoid valve is opened to supply air to the downstream, the pressure in the right chamber of the diaphragm 23 decreases. Under the push of the spring 29, the slide valve 30 moves to the right, and the valve port V3 of the pressure reducing valve gradually opens. The pressure in the right chamber of the diaphragm 23 increases accordingly. When it is balanced with the set pressure of the spring 29, the opening size of the valve port V3 of the pressure reducing valve is constant, that is, the throttling pressure reduction size is constant, and the pressure reducing valve has a certain pressure output. If the bottle pressure or the output flow rate changes, the pressure reducing valve will automatically adjust by its own structure so that the output pressure is basically The pressure in the bottle remains unchanged. When the bottle pressure decreases, the output pressure will inevitably decrease at the moment of decrease, and the force acting on the right side of the diaphragm 23 will also decrease. The slide valve 30 moves to the right under the push of the spring 29, the opening of the valve port V3 of the pressure reducing valve increases, the throttling and pressure-reducing effect decreases, and the output pressure returns to close to the original set value. The slide valve 30 achieves a new balance in the new position; if the flow rate increases (or decreases), the flow rate through the valve port V3 of the pressure reducing valve also increases (or decreases), the pressure loss also increases (or decreases), causing the output pressure to decrease (or increase), thereby causing the slide valve 30 to move to the right (or left), the opening of the valve port V3 of the pressure reducing valve increases (or closes), the throttling and pressure-reducing effect decreases (or increases), and the output pressure returns (or decreases) to the original set value.

[0029] The solenoid valve is composed of parts such as an electromagnet 54, a solenoid valve seat 58 and an air outlet filter element 59. The center lines of all parts are on the same axis. The body of the electromagnet 54 is slidably fitted into the corresponding hole on the rectangular parallelepiped of the valve body 1 and is provided with an O-ring 8 55, which is positioned by a retaining ring 4 56. The solenoid valve is provided with an electromagnet spring 60. The outgoing cable passes through the corresponding hole on the side of the rectangular parallelepiped and is fixed by a wire sealing joint; a sealing gasket is provided in the blind hole at the front end of the moving iron core of the electromagnet 54, which forms an electric seal with the annular edge of the cone at the left end of the solenoid valve seat 58. The solenoid valve port V4 has two longitudinal grooves (not shown) running through the surface of the moving iron core cylinder to guide the pressurized gas to the bottom end of the moving iron core. The solenoid valve is a normally closed type. Under non-powered conditions, the sealing gasket is pressed against the annular edge of the solenoid valve seat 58 by the spring force and the thrust of the gas, and the solenoid valve port V4 is closed; after power is turned on, the solenoid valve port V4 opens to supply gas to the fuel cell. At this time, the air pressure at both ends of the moving iron core is balanced, and the holding force only needs to be greater than the spring force, so the holding voltage is much lower than the opening voltage. The solenoid valve seat 58 is screwed into the corresponding screw hole of the rectangular parallelepiped of the valve body 1, and the cylinder with a slightly smaller diameter in the middle is slidably fitted in the corresponding hole and is provided with an O-ring 9 57. There is a small frustum at the left end; the right end of the center hole is a screw hole, which is connected to the joint of the outlet pipe, and the left end is a shaft hole p with a smaller diameter. In the middle is a flat cylindrical hole, in which an outlet filter element 59 is provided and positioned by a retaining ring. The tapered hole is used to connect the shaft hole p and the flat cylindrical hole; by rotating the solenoid valve seat 58, the opening of the solenoid valve port V4 can be adjusted after the electromagnet is energized, that is, the electromagnetic force to open the solenoid valve port V4 can be adjusted. After the adjustment meets the requirements, it is tightened by the tapered end screw.

[0030] The overpressure safety valve and the overheat safety valve are designed as one body and are located in the upper left corner of the rectangular parallelepiped of the valve body 1. They are composed of a safety valve sleeve 49, a safety valve core 47, a spring 48, a piston 50, a fuse block 51, an adjusting stud 53 and a locking nut 52. The center lines of all parts are located on the same axis. The external thread on the top of the safety valve sleeve 49 is screwed with the corresponding internal thread in the rectangular parallelepiped of the valve body 1. The lower cylinder is slidably fitted with the corresponding hole. An O-ring is provided on the shoulder of the outer periphery of the bottom end. There is a stepped hole in the center. An internal thread is machined in the large hole. A piston 50 is slidably fitted in the small hole. The upper plane of the lower cone of the safety valve core 47 is aligned with the piston 5. 0 is provided with a spring three 48 between the lower end surfaces. The taper of the cone at the lower end of the safety valve core 47 is the same as the taper of the chamfer above the center hole of the bottom wall of the safety valve sleeve 49. The two constitute the safety valve port V5. The handle end of the safety valve core 47 is loosely fitted in the blind hole at the bottom end of the piston 50; the external thread of the adjusting stud 53 is screwed into the internal thread of the large hole of the safety valve sleeve 49. The top end has a hexagonal hole and the bottom end has a pit. The pit is provided with a fuse block 51 and a connecting hole is provided in the center. The tightness of the spring three 48 can be adjusted by turning the adjusting stud 53 with an hexagonal wrench, that is, the opening pressure of the safety valve can be adjusted. The opening pressure of this patent is set to 70 MPa, which is locked by the locking nut 3 52 after setting; four evenly distributed through holes are drilled in appropriate positions on the wall of the safety valve sleeve 49, and the outer diameter of the through holes is provided with an annular groove to connect the valve cavity with the discharge hole B3. The internal thread of the discharge hole B3 is connected to the joint of the discharge pipe. When the hydrogen pressure in the hydrogen storage bottle exceeds 70MPa, the safety valve port V5 opens, and the high-pressure hydrogen is discharged outward through the discharge pipe to prevent the hydrogen storage bottle from overpressure explosion. When the temperature of the combination valve reaches 110±5℃, the fuse block 51 melts into liquid and is discharged outward through the connecting hole under the combined action of the spring 3 48 and the gas pressure in the gas cylinder. Since the thickness of the fuse block 51 is greater than the compression of the spring 3 48, the spring 3 48 is in a completely relaxed state during discharge and will not hinder the discharge of hydrogen.

[0031] The inflation one-way valve is located in the lower middle of the left side of the rectangular parallelepiped of the valve body 1, and is composed of an inflation valve sleeve 46, an inflation port filter element 45, a spring four 43, a valve core 44 and other parts. The center lines of all parts are on the same axis; the external thread on the large diameter of the inflation valve sleeve 46 is screwed with the corresponding internal thread on the rectangular parallelepiped, and the small diameter is slidably matched with the corresponding hole and is provided with an O-ring. There is an axial hole in the center of the inner hole, and the left end of the axial hole is a stepped hole. The large hole is processed with a thread that is screwed with the external thread of the inflation tool connector. The inflation port filter element 45 is installed in the small hole and is positioned by a retaining ring. The bottom of the hole at the right end of the axial hole is processed The hole has a groove, and a valve core 44 is dynamically positioned within it. The left end of the valve core 44 is a frustum, the taper of which matches the chamfer at the right end of the axial hole. Together, they form the inflation check valve port V6. A spring 43 is installed in the central blind hole. Four evenly spaced through-holes are drilled into the cylinder wall to the left of the blind hole. Therefore, when not in use, the check valve port V6 remains tightly closed due to the combined action of spring 43 and the air pressure within the hydrogen storage bottle. Four evenly spaced through-holes are drilled into the cylinder wall of the inflation valve sleeve 46 at appropriate locations. The outer circumference of the through-holes is provided with an annular groove to direct the hydrogen gas within the bottle to the deflation valve. During inflation, due to the low pressure within the bottle, the high-pressure hydrogen passes through the filter element 45, overcoming the pressure of spring 43 and back pressure, opening the check valve port V6 and inflating the hydrogen storage bottle.

[0032] The air release valve is located at the lower left of the valve body 1 cuboid, and is composed of a air release valve seat 39, a screw 36, an air release valve core 40, a spring five 35 and a locking nut four 37. The center lines of each part are on the same axis. The external thread on the large diameter of the air release valve seat 39 is screwed with the internal thread of the corresponding hole in the cuboid, and the small cylinder is slidably matched with the corresponding hole. An O-ring eleven 41 is provided on the shoulder blade at the top. The inner hole diameter is large at both ends and small in the middle. A groove is machined at the bottom of the upper hole. A air release valve core 40 is dynamically provided in the hole. The taper of the cone at the lower end of the air release valve core 40 is the same as the taper of the chamfer above the small hole in the middle section. The two constitute the air release valve port V7. A spring five 35 is provided in the blind hole, and four evenly distributed through holes are drilled on the cylinder wall at the bottom of the blind hole; an internal thread is machined in the lower hole of the air release valve seat 39, which is screwed with the external thread of the screw 36. The screw The bottom end of 36 has an inner hexagonal hole, and the small cylinder above is slidably matched with the small hole in the middle section of the bleed valve seat 39, and is provided with an O-ring 12 38. The end face of the small shaft at the top is opposite to the top surface of the cone of the bleed valve core 40, and they are usually not in contact. Therefore, the bleed valve port V7 is usually closed under the action of the spring 5 35 and the internal pressure. Four evenly distributed through holes are drilled near the middle of the cylinder wall of the bleed valve seat 39, and the outer mouth of the through hole is cared with an annular groove to connect the bleed hole B4. When the hydrogen in the hydrogen storage bottle needs to be discharged outward, loosen the locking nut 47, screw in the screw 36, push the bleed valve core 40, open the bleed valve port V7, and the high-pressure hydrogen is discharged outward through the bleed hole B4. This structure is very safe because the screw 36 is screwed inward and will not be ejected outward due to high pressure.

[0033] The stainless steel ball 8 and the sealing screw 7 are used to seal the high-pressure channel orifice; a longitudinal hole z1 and a radial hole z2 are also drilled on the other side of the valve body 1 cylinder. The axis of the longitudinal hole z1 is parallel to the axis of the cylinder. The lower end of the longitudinal hole z1 is screwed to the temperature sensor 15 and sealed by the sealing gasket 16. Its wires pass through the longitudinal hole z1 and the radial hole z2 to the outside of the valve and are fixed by the wire sealing joint 18.

[0034] In order to ensure that the valve port is reliably sealed under ultra-high pressure, the contact surfaces of the valve core and valve seat of the present invention are both ground in pairs, with a surface roughness of ≤0.1 micron, and one of the two is made of a relatively soft material. For example, the valve core material in this patent is stainless steel 316L, and the valve seat material is copper alloy or aluminum alloy. The valve seat can also be inlaid with a synthetic resin with lower hardness, such as polyimide resin. In this way, under high pressure, the contact surface is more fitted due to the deformation of the softer material.

[0035] In addition to the above embodiments, within the scope disclosed in the claims and description of the present invention, the technical features or technical data of the present invention can be reselected and combined to form new implementation methods. These implementation methods that are not described in detail in the present invention can be easily implemented by those skilled in the art without creative work. Therefore, these implementation methods that are not described in detail should also be regarded as specific embodiments of the present invention and within the scope of protection of the present invention.

Claims

1. A vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a flow stabilizing valve, a stop valve, a pressure reducing valve, a solenoid valve, a gas charging check valve, an overpressure safety valve, an overheating safety valve, a gas release valve, a gas charging port filter element, a gas outlet filter element, a temperature sensor, and a bottle internal gas pressure and an output gas pressure sensor interface. During gas charging, high-pressure hydrogen opens the gas charging check valve through the gas charging port filter element (45) and charges the hydrogen storage bottle through the corresponding channel in the valve body (1). During gas supply, high-pressure hydrogen in the hydrogen storage bottle supplies gas to the fuel cell through the gas supply port filter element (14), the flow stabilizing valve, the stop valve, the pressure reducing valve, the solenoid valve, and the gas outlet filter element (59). The flow stabilizing valve is used to reduce fluctuations in the output flow rate, and the pressure reducing valve is used to adjust the output pressure so that it meets the requirements of the fuel cell. The valve body (1) is composed of two mutually perpendicular parts, the upper part is a rectangular parallelepiped, and the lower part is a stepped cylinder; a stepped longitudinal hole is provided above one side of the lower cylinder, the longitudinal hole is parallel to the axis of the lower cylinder and is eccentrically arranged, a flow stabilizing valve is provided in the small hole, hydrogen in the hydrogen storage bottle is sent to the flow stabilizing valve through the air inlet hole (a), an air delivery port filter element (14) is provided at the lower end of the air inlet hole (a), and is positioned by a second retaining ring (13); a pressure reducing valve is provided at the lower right side of the rectangular parallelepiped of the valve body (1).

2. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 is characterized in that: The external thread of the upper cylinder is screwed into the internal thread above the mouth of the hydrogen storage bottle, the lower cylinder is slidably fitted into the inner hole below the mouth of the bottle, and an O-ring (12) and a retaining ring (11) are arranged in the annular groove of the lower cylinder; the various components are arranged in the valve body (1) and are connected by corresponding channels in the valve body, and the channel opening is blocked by a steel ball (8) and a sealing screw (7).

3. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: The flow stabilizing valve comprises a flow stabilizing valve core (9), a spring (10) and a tapered hole on the lower end surface of a stop valve sleeve (6) above, and the center lines of the parts are on the same axis; the large diameter of the lower part of the flow stabilizing valve core (9) is dynamically matched with the corresponding hole in the valve body (1), and the outer diameter is provided with two annular balancing grooves, the top end of the upper small shaft is a cone, and the cone angle of the cone is the same as the taper of the tapered hole on the lower end surface of the stop valve sleeve (6), and the two form a valve port (V1) of the flow stabilizing valve, the bottom center of the flow stabilizing valve core (9) is provided with a bottom hole (b), the hole wall of the bottom hole (b) is provided with four radial holes (c), and the top end of the bottom hole (b) is provided with a through small hole (d); the spring (10) is arranged between the shoulder of the large diameter shaft and the lower end surface of the stop valve sleeve (6).

4. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 3 is characterized in that: A stop valve is arranged in the large hole of the stepped longitudinal hole, the stop valve comprising a stop valve sleeve (6), a stop valve core (4) and a locking nut (5), the center lines of the parts being consistent with the center line of the flow regulating valve; the outer diameter of the stop valve sleeve (6) is small at the two ends and large in the middle, the cylinder of the lower section is slidably fitted in the corresponding hole of the valve body (1), and is provided with an O-ring (19) and an O-ring (20), the external thread of the middle section is screwed with the corresponding internal thread in the valve body (1), a stepped through hole is provided in the center, a tapered hole is provided in the center of the lower end face, the internal thread in the upper hole of the stepped through hole is screwed with the external thread of the stop valve core (4), the middle hole is screwed with the stop valve core ( The valve stem of the stop valve core (4) is slidably matched, and is provided with an O-ring four (2) and a retaining ring three (3). The lower end of the valve stem of the stop valve core (4) is a cone, and the taper of the cone is the same as the taper of the cone hole at the bottom end of the center hole of the stop valve sleeve (6). The two together form a stop valve port (V2). The stop valve port (V2) is usually open and locked by a locking nut one (5). The cylinder wall of the lower section of the stop valve sleeve (6) is provided with four evenly distributed radial holes two (e) communicating with the center hole, and the outer opening of the radial hole two (e) is provided with an annular groove (f); an O-ring five (17) is provided between the lower end surface of the stop valve sleeve (6) and the end surface of the corresponding hole in the valve body (1).

5. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: The pressure reducing valve comprises a right valve sleeve (24), a left valve sleeve (21), a pressure reducing valve seat (34), a slide valve (30), a universal plug ring (33), a diaphragm (23), a second spring (29), a gasket (26) and a second locking nut (25), wherein the center lines of the components are on the same axis; the external thread at the right end of the right valve sleeve (24) is screwed into the corresponding internal thread in the valve body (1) and is fixed by a cone-end screw (28); the external cylinder at the left end is slidably fitted into the corresponding hole in the valve body (1) and is provided with There is an O-ring six (27), a stepped blind hole in the center of the left side, four radial holes (j) evenly distributed on the cylinder wall, and an annular groove is provided at the outer mouth of the radial hole (j); the left valve sleeve (21) has a stepped shape, with a larger diameter on the right and smaller on the left, and pits are provided in the center of the left and right cylinders, and a partition wall (w) is provided between the two pits. The right cylinder is slidably fitted in the corresponding hole of the valve body (1) and is sealed with two O-rings seven (22). The cylinder wall of the right cylinder is provided with four evenly distributed The radial hole five (l) is provided on the outer opening of the radial hole five (l); four radial holes three (i) are evenly distributed on the wall of the left cylinder; a plug ring (33) is provided in the groove of the inner hole of the partition wall (w); the outer cylindrical part of the right shoulder of the pressure reducing valve seat (34) is slidably fitted in the inner hole of the left pit of the left sliding sleeve (21); the middle part of the right end is a convex sphere, which together with the tapered hole at the left end of the slide valve (30) forms a pressure reducing valve port (V3); the material of the pressure reducing valve seat (34) is hard The hardness of the material is lower than that of the slide valve (30); the valve stem of the middle section of the slide valve (30) is slidably fitted in the inner hole of the universal plug ring (33); two locking nuts (25) are used at the right end to press the inner ring of the diaphragm (23) sandwiched between the two gaskets (26) against the shoulder of the valve stem to make them one body; the left end has a flange with a larger diameter, a through hole in the center, and a tapered hole at the left end of the through hole; the spring (29) is arranged between the right end surface of the partition wall (w) and the gasket (26).

6. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: A solenoid valve is provided at the upper right side of the rectangular body of the valve body (1), and the solenoid valve comprises an electromagnet (54), a solenoid valve seat (58) and an air outlet filter element (59), and the center lines of the components are on the same axis; the body of the electromagnet (54) is slidably fitted in the corresponding hole of the valve body (1), and is provided with an O-ring eight (55), which is positioned by a retaining ring four (56); the outlet cable passes through the corresponding hole on the side of the rectangular body and is fixed by a wire sealing joint; a sealing gasket is provided in the blind hole at the front end of the moving iron core of the electromagnet (54), and together with the annular blade edge of the cone at the left end of the solenoid valve seat (58), forms a solenoid valve port (V4) The surface of the moving iron core cylinder has two longitudinal holes extending therethrough; the electromagnetic valve seat (58) is screwed into the corresponding screw holes of the valve body (1), and the cylinder with a slightly smaller diameter in the middle is slidably fitted in the corresponding hole and is provided with an O-ring nine (57), and a small cone is provided at the left end; the right end of the center hole is a screw hole connected to the joint of the air outlet pipe, the left end is an axial hole (p), and the middle is a flat cylindrical hole, in which an air outlet filter element (59) is provided and positioned by a retaining ring, and the axial hole (p) and the flat cylindrical hole are connected by a tapered hole, and the position of the electromagnetic valve seat (58) is adjusted and fixed by a cone-end screw.

7. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: The overpressure safety valve and the overheat safety valve are arranged on the upper left of the rectangular parallelepiped. The two are designed as one body, including a safety valve sleeve (49), a safety valve core (47), a spring three (48), a piston (50), a fuse block (51), an adjusting stud (53) and a locking nut three (52). The center lines of the various parts are located on the same axis. The external thread of the safety valve sleeve (49) is screwed into the internal thread of the corresponding hole, the lower cylinder is slidably matched with the corresponding hole, a sealing ring is provided on the shoulder at the bottom, and the center has There is a stepped hole, the large hole of the stepped hole is provided with an internal thread, and the small hole is slidably fitted with a piston (50); a spring three (48) is provided between the upper plane of the lower cone of the safety valve core (47) and the lower end surface of the piston (50); the taper of the cone at the lower end of the safety valve core (47) is the same as the taper of the chamfer above the center hole of the bottom wall of the safety valve sleeve (49), and the two form a safety valve port (V5), and the handle end of the safety valve core (47) is loosely fitted in the blind hole at the bottom end of the piston (50); the external thread of the adjusting stud (53) is screwed into the internal thread of the large hole of the safety valve sleeve (49), the top end is provided with a hexagonal hole, the bottom end is provided with a pit, a fuse block (51) is provided in the pit, and a connecting hole is provided in the center; four evenly distributed through holes are provided on the wall of the safety valve sleeve (49), and an annular groove is provided on the outer diameter of the outer opening of the through hole to communicate with the discharge hole (B3).

8. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: The inflation check valve is arranged at the lower middle part of the left side of the rectangular parallelepiped. The inflation check valve comprises an inflation valve sleeve (46), a spring four (43), and an inflation valve core (44). The center lines of the components are on the same axis. The external thread on the large diameter of the inflation valve sleeve (46) is screwed with the corresponding internal thread on the rectangular parallelepiped. The small diameter is slidably matched with the corresponding hole and is provided with an O-ring ten (42). The left end of the axial hole at the center of the inner hole is a stepped hole. The large hole is provided with an internal thread. The small hole is provided with an inflation port filter element (44). 5), and a retaining ring is provided for positioning, a groove is provided at the bottom of the right end of the shaft hole, an air-filling valve core (44) is dynamically provided in the hole, the left end of the air-filling valve core (44) is a cone, the taper of the cone is the same as the taper of the chamfer at the right end of the shaft hole, and the two form a one-way valve port (V6), a spring four (43) is provided in the central blind hole, four evenly distributed through holes are provided on the cylinder wall at the left end of the blind hole, four evenly distributed radial holes are provided on the cylinder wall of the air-filling valve sleeve (46), and an annular groove is provided on the outer circle of the outer opening of the hole.

9. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: The air release valve is arranged at the lower left of the rectangular parallelepiped, and comprises an air release valve seat (39), a screw (36), an air release valve core (40), a spring five (35) and a locking nut four (37), and the center lines of the parts are located on the same axis; the external thread on the large diameter of the air release valve seat (39) is screwed with the internal thread of the corresponding hole, the small cylinder is slidably matched with the corresponding hole, an O-ring eleven (41) is arranged on the top shoulder, the diameters of the two ends of the inner hole are large and the diameter in the middle is small, an annular groove is arranged at the bottom of the upper hole, and the air release valve core (40) is arranged in the hole, and the taper of the cone at the lower end of the air release valve core (40) is the same as the taper of the chamfer above the small hole in the middle section. The two constitute the valve port (V7) of the air release valve. A spring five (35) is arranged in the blind hole of the air release valve core (40). Four evenly distributed through holes are arranged on the wall of the bottom of the blind hole. The internal thread in the lower hole is screwed with the external thread of the screw (36). The small cylinder above the screw (36) is slidably matched with the small hole in the middle section of the air release valve seat (39), and an O-ring twelve (38) is arranged. The top surface of the top small shaft is opposite to the top surface of the cone of the air release valve core (40), and they are usually not in contact. Four evenly distributed through holes are arranged in the middle of the wall of the air release valve seat (39). An annular groove is arranged on the outer diameter of the outer opening of the through hole, which is communicated with the air release hole (B4).

10. The vehicle-mounted ultra-high pressure hydrogen storage bottle combination valve according to claim 1 or 2, characterized in that: A longitudinal hole (z1) and a transverse hole (z2) are also provided on the other side of the valve body (1) cylinder. A temperature sensor (15) is screwed to the lower end of the longitudinal hole (z1) and is sealed by a sealing gasket (16). A wire of the temperature sensor passes through the longitudinal hole (z1) and the transverse hole (z2) to the outside of the combination valve and is fixed by a wire sealing joint (18).

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