CN117781174A - Combined valve of high-pressure hydrogen storage cylinder for vehicle - Google Patents

Abstract

The invention provides a combined valve of a high-pressure hydrogen storage cylinder for a vehicle, which relates to the technical field of hydrogen storage and comprises a valve body, a TPRD module, a high-pressure electromagnetic valve module, an overcurrent protection valve, a manual stop valve module and a discharge valve module, wherein a main channel, a discharge channel, a first branch, a second branch, a third branch, a fourth branch and a fifth branch are arranged in the valve body, and the valve body is provided with an electromagnetic valve mounting port, an inlet/outlet interface, an overcurrent protection valve mounting port, a TPRD discharging port, a TPRD mounting port, a discharge valve mounting port and a manual stop valve mounting port. The high-pressure hydrogen storage cylinder combined valve for the vehicle, provided by the embodiment of the invention, integrates the TPRD module, the high-pressure electromagnetic valve module, the overcurrent protection valve, the manual stop valve module and the bleeder valve module on the same valve body, so that a plurality of independent valves are effectively avoided, the leakage point of a vehicle-mounted hydrogen storage system is reduced, and the safety of the vehicle-mounted hydrogen storage system is improved.

Description

Combined valve of high-pressure hydrogen storage cylinder for vehicle

Technical Field

The invention relates to the technical field of hydrogen storage, in particular to a combined valve of a high-pressure hydrogen storage cylinder for a vehicle.

Background

The fuel cell can directly convert chemical energy into electric energy, and has the advantages of high energy conversion efficiency, small pollution, wide fuel source, low noise, high reliability, convenient maintenance and the like. The vehicle-mounted hydrogen storage system of the fuel cell is generally composed of a hydrogenation port, a high-pressure gas cylinder, a bottleneck valve, a pressure reducing valve, a safety valve, a relief valve, a pressure sensor, a pipeline joint and the like. The bottle opening combined valve is a core part of the vehicle-mounted hydrogen storage system, and the leakage point and leakage risk of the vehicle-mounted hydrogen storage system are increased due to the low integration level of the existing bottle opening combined valve.

Disclosure of Invention

The invention provides a combined valve of a high-pressure hydrogen storage cylinder for a vehicle, which is used for solving the problems of low integration level and high leakage risk of the conventional bottle opening combined valve.

The invention provides a combined valve of a high-pressure hydrogen storage cylinder for a vehicle, which comprises the following components:

the valve body is internally provided with a main channel, a discharge channel, a first branch, a second branch, a third branch, a fourth branch and a fifth branch, and is provided with an electromagnetic valve mounting port, an inlet/outlet interface, an overcurrent protection valve mounting port, a TPRD discharging port, a TPRD mounting port, a discharge valve mounting port and a manual stop valve mounting port; the fifth branch is communicated with the bleeder valve mounting port, the manual stop valve mounting port and the inlet/outlet port, the main channel is communicated with the overcurrent protection valve mounting port and the electromagnetic valve mounting port, and the electromagnetic valve mounting port is communicated with the fifth branch through the first branch; the discharging channel is communicated with the TPRD installing port through a second branch, and the TPRD discharging port is communicated with the TPRD installing port through a third branch; the bleed passage communicates with the fifth branch through the fourth branch;

the TPRD module is arranged at the TPRD installation port;

the high-voltage electromagnetic valve module is arranged at the electromagnetic valve installation port;

the overcurrent protection valve is arranged at the overcurrent protection valve mounting port;

the manual stop valve module is arranged at the manual stop valve mounting port;

and the relief valve module is arranged at the relief valve mounting port.

According to the embodiment of the invention, the high-pressure hydrogen storage cylinder combined valve for the vehicle further comprises:

and the temperature sensor module is arranged at the temperature detection port.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, provided by the embodiment of the invention, the valve body is provided with the pressure detection port, the sixth branch is arranged in the valve body, and the first branch is communicated with the pressure detection port through the sixth branch.

According to the embodiment of the invention, the high-pressure hydrogen storage cylinder combined valve for the vehicle further comprises:

and the filter is arranged at the air inlet of the overcurrent protection valve.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, the TPRD module comprises a support, a glass temperature sensing ball, a piston, a first spring and a first sealing component, wherein the support is arranged at the TPRD mounting port, the first end of the piston is slidably inserted into the support and is in sealing fit with the support, the first end of the piston is provided with an annular boss, the second end of the piston is provided with an annular groove, the second end of the piston is inserted into the second branch, and the first sealing component is arranged in the annular groove of the piston; the first end of the first spring is abutted with the inner wall of the TPRD mounting port, and the second end of the first spring is abutted with the annular boss; the glass temperature sensing ball set up in the inside of support, the first end of glass temperature sensing ball with the tip butt of piston first end, the second end of glass temperature sensing ball with the support butt.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, the high-pressure electromagnetic valve module comprises an electromagnetic valve sleeve, a main valve sealing gasket, a main valve, a coil, a yoke, a coil framework and a valve core assembly, wherein the first end of the electromagnetic valve sleeve is arranged at the electromagnetic valve mounting port, the coil framework is sleeved on the periphery of the second end of the electromagnetic valve sleeve, the coil is sleeved on the periphery of the coil framework, and the yoke is sleeved on the periphery of the coil; an annular step is formed on the inner wall of the electromagnetic valve mounting opening;

the main valve is movably arranged in the electromagnetic valve sleeve, a gap is formed between the main valve and the inner wall of the electromagnetic valve sleeve, the main valve sealing gasket is arranged on one side of the main valve, which faces the annular step, the inside of the main valve is provided with a flow passage, one side of the main valve, which faces away from the annular step, is provided with a bulge, and the bulge is provided with a pilot hole communicated with the flow passage; the valve core assembly is arranged in the electromagnetic valve sleeve and is positioned at one side of the main valve, which is away from the annular step; the electromagnetic valve core component is used for controlling the pilot hole to be opened under the action of a magnetic field generated by the coil.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, the valve core assembly comprises a pilot sealing gasket, a spring seat, a lower armature, an upper armature, a second spring, a stop iron and a push rod, wherein the first end of the lower armature is connected with the main valve in a sleeved mode, and the first end of the upper armature is connected with the second end of the lower armature in a sleeved mode; the stop iron is arranged in the electromagnetic valve sleeve and is positioned at one side of the upper armature iron, which is away from the main valve; the pilot sealing gasket is arranged on one side of the spring seat, which faces the main valve, the second spring is arranged in the upper armature, the first end of the second spring is abutted to the spring seat, the ejector rod is movably arranged in the upper armature, the first end of the ejector rod is abutted to the second end of the second spring, and the second end of the ejector rod extends out from the second end of the upper armature and is abutted to the stop iron.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, which is provided by the embodiment of the invention, the high-pressure electromagnetic valve module further comprises:

the locking screw is internally provided with a diversion hole, and sequentially penetrates through the main valve sealing gasket and the flow channel, and the diversion hole is communicated with the flow channel.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, the overcurrent protection valve comprises a shell, an overcurrent valve and an overcurrent valve spring, wherein a first sealing inclined plane is formed on the inner wall of an overcurrent protection valve mounting hole, a first end of the shell is mounted on the overcurrent protection valve mounting hole, the interior of the shell is hollow, a limiting step is formed on the outer peripheral surface of the first end of the overcurrent valve, the overcurrent valve spring is sleeved on the outer periphery of the overcurrent valve, the first end of the overcurrent valve spring is in butt joint with the limiting step, a through hole is formed in the side wall of a second end of the overcurrent valve, and the end of the second end of the overcurrent valve is used for being in sealing fit with the first sealing inclined plane.

According to the high-pressure hydrogen storage cylinder combined valve for the vehicle, the second sealing inclined plane is formed on the inner wall of the manual stop valve mounting hole, the manual stop valve module comprises a valve cover, a valve rod, a friction ring, a valve core and a valve, the valve cover is mounted on the manual stop valve mounting hole, the valve rod is arranged in the valve cover, the first end of the valve rod is in rotary fit with the valve cover, the friction ring is sleeved on the periphery of the first end of the valve rod, the valve core is arranged in the valve cover and in threaded fit with the inner wall of the valve cover, an inserting groove is formed in one end, close to the valve rod, of the valve core, an inserting part is arranged at the second end of the valve rod, and the inserting part is inserted in the inserting groove; the valve is arranged at one end of the valve core, which is far away from the valve rod, and the valve is used for being matched with the second sealing inclined plane in a sealing way.

The high-pressure hydrogen storage cylinder combined valve for the vehicle, provided by the embodiment of the invention, integrates the TPRD module, the high-pressure electromagnetic valve module, the overcurrent protection valve, the manual stop valve module and the bleeder valve module on the same valve body, so that a plurality of independent valves are effectively avoided, the leakage point of a vehicle-mounted hydrogen storage system is reduced, and the safety of the vehicle-mounted hydrogen storage system is improved.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a combined valve for a high-pressure hydrogen storage cylinder for a vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a valve assembly for a high-pressure hydrogen storage cylinder for a vehicle according to an embodiment of the present invention;

FIG. 3 is a schematic view of a partial enlarged structure at A in FIG. 2;

FIG. 4 is a schematic view of a partially enlarged structure at B in FIG. 2;

FIG. 5 is a schematic diagram showing a sectional structure of a combination valve for a high-pressure hydrogen storage cylinder for a vehicle according to an embodiment of the present invention;

fig. 6 is a third schematic sectional view of a valve assembly for a high-pressure hydrogen storage cylinder for a vehicle according to an embodiment of the present invention.

Reference numerals:

100. a valve body; 110. a main channel; 111. a bleed passage; 112. a first branch; 113. a second branch; 114. a third branch; 115. a fourth branch; 116. a fifth branch; 117. a solenoid valve mounting port; 118. an in/out interface; 119. an overcurrent protection valve mounting port; 120. a TPRD discharge port; 121. a TPRD mounting port; 122. a bleed valve mounting port; 124. a manual stop valve mounting port; 125. a temperature detection port; 126. a pressure detection port;

200. a TPRD module; 210. a bracket; 220. glass temperature sensing ball; 230. a piston; 240. a first spring; 250. a first seal assembly;

300. a high pressure solenoid valve module; 310. a solenoid valve sleeve; 311. an annular step; 320. a main valve gasket; 330. a main shutter; 331. a protrusion; 332. a pilot hole; 340. a coil; 350. a yoke; 360. a coil bobbin; 370. a pilot seal; 371. a spring seat; 372. a lower armature; 373. an upper armature; 374. a second spring; 375. a stop iron; 376. a push rod; 377. a locking screw; 378. a deflector aperture;

400. an overcurrent protection valve; 410. a housing; 420. an overflow valve flap; 430. an excess flow valve spring;

500. a manual shut-off valve module; 510. a valve cover; 520. a valve stem; 530. a friction ring; 540. a valve core; 550. a valve;

600. a bleed valve module;

700. a temperature sensor module; 710. a thermistor; 720. a compression nut; 730. a sensor housing;

800. a filter; 810. an end cap; 820. a filter holder; 830. and (5) a filter screen.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The following describes a combination valve for a high-pressure hydrogen storage cylinder for a vehicle according to an embodiment of the present invention with reference to fig. 1 to 6.

As shown in fig. 1 and 2, the high pressure hydrogen storage cylinder combined valve for a vehicle includes a valve body 100, a TPRD module 200, a high pressure electric valve module 300, an overcurrent protection valve 400, a manual cut-off valve module 500, and a bleed valve module 600, a main passage 110, a bleed passage 111, a first branch 112, a second branch 113, a third branch 114, a fourth branch 115, and a fifth branch 116 are provided in the interior of the valve body 100, and the valve body 100 is provided with a solenoid valve installation port 117, an inlet/outlet port 118, an overcurrent protection valve installation port 119, a TPRD discharge port 120, a TPRD installation port 121, a bleed valve installation port 122, and a manual cut-off valve installation port 124.

The relief valve mounting port 122 and the manual shutoff valve mounting port 124 are located on the same side of the valve body 100, the inlet/outlet port 118 and the TPRD mounting port 121 are located on opposite sides of the valve body 100, the fifth branch 116 is communicated with the relief valve mounting port 122, the manual shutoff valve mounting port 124 and the inlet/outlet port 118, the main passage 110 is communicated with the overcurrent protection valve mounting port 119 and the solenoid valve mounting port 117, specifically, one end of the main passage 110 is communicated with the overcurrent protection valve mounting port 119, and the other end of the main passage 110 is communicated with the solenoid valve mounting port 117.

The main channel 110 is a flow channel, and the electromagnetic valve mounting port 117 is communicated with the fifth branch 116 through the first branch 112; the relief passage 111 and the main passage 110 are both provided along the thickness direction of the valve body 100, the relief passage 111 communicates with the TPRD mounting opening 121 through the second branch passage 113, and the second branch passage 113 and the TPRD mounting opening 121 are in the first plane. The TPRD vent 120 communicates with the TPRD mounting port 121 through the third branch 114, the axis of the third branch 114 being perpendicular to the axis of the second branch 113, the axis of the second branch 113 being parallel to the axis of the fifth branch 116, the bleed passage 111 communicating with the fifth branch 116 through the fourth branch 115, the axis of the fourth branch 115 being perpendicular to the axis of the fifth branch 116.

The TPRD module 200 is mounted to the TPRD mounting port 121, the high-pressure solenoid valve module 300 is mounted to the solenoid valve mounting port 117, the overcurrent protection valve 400 is mounted to the overcurrent protection valve mounting port 119, the manual shutoff valve module 500 is mounted to the manual shutoff valve mounting port 124, and the bleed valve module 600 is mounted to the bleed valve mounting port 122.

The high-pressure hydrogen storage cylinder combined valve for the vehicle integrates the TPRD module 200, the high-pressure electromagnetic valve module 300, the overcurrent protection valve 400, the manual stop valve module 500 and the bleeder valve module 600 on the same valve body 100, so that a plurality of independent valves are effectively avoided, leakage points of a vehicle-mounted hydrogen storage system are reduced, and safety of the vehicle-mounted hydrogen storage system is improved.

In a preferred embodiment of the present invention, the valve body 100 is of an irregular pentagonal design, and the valve body 100 is made of an aluminum alloy 6061-T6 material, which can provide the valve body 100 with high strength and better hydrogen embrittlement resistance, however, the material of the valve body 100 is not limited thereto, and other materials can be used.

In one embodiment of the present invention, as shown in fig. 1 and 5, the high-pressure hydrogen storage cylinder combination valve for a vehicle further includes a temperature sensor module 700, the valve body 100 is provided with a temperature sensing port 125, the temperature sensing port 125 is located at the same side of the valve body 10 as the overcurrent protection valve mounting port 119, and the temperature sensor module 700 is mounted to the temperature sensing port 125. The temperature sensor module 700 can monitor the temperature value in the hydrogen storage cylinder in real time to assist in controlling the filling and discharging rates, prevent the temperature in the hydrogen storage cylinder from exceeding the rated operating temperature range of the hydrogen storage cylinder and the cylinder valve, and improve the safety of the high-pressure hydrogen storage cylinder.

The temperature sensor module 700 includes thermistor 710, gland nut 720, sensor housing 730, sealing washer and retaining ring, and sensor housing 730 sets up in temperature detection mouth 125, and sensor housing 730 is pegged graft and is connected or threaded connection with temperature detection mouth 125, and the outer peripheral face of sensor housing 730 is provided with annular protruding stupefied and annular groove, and sealing washer and retaining ring set up in annular groove to realize the sealed cooperation between the inner wall of sensor housing 730 and temperature detection mouth 125, thermistor 710 sets up in sensor housing 730, and extends to in the temperature detection mouth 125. The compression nut 720 is rotatably sleeved on the outer periphery of the sensor housing 730 and is in threaded fit with the inner wall of the temperature detection port 125, and the compression nut 720 abuts against the annular protruding edge to fix the sensor housing 730 to the temperature detection port 125. For easy assembly and disassembly, the cross section of the compression nut 720 is regular pentagonal or regular hexagonal, so that the compression nut 720 can be easily disassembled and assembled by using a wrench.

In one embodiment of the present invention, as shown in fig. 1 and 2, the valve body 100 is provided with a pressure detecting port 126, the pressure detecting port 126 is located on the same side of the valve body 100 as the inlet/outlet port 118, the pressure detecting port 126 is used to connect with a pressure sensor so as to detect the pressure inside the bottle, a sixth branch is provided inside the valve body 100, the axis of the sixth branch is parallel to the axis of the fifth branch 116, and the first branch 112 communicates with the pressure detecting port 126 through the sixth branch.

In one embodiment of the present invention, as shown in fig. 5, the high-pressure hydrogen storage cylinder combination valve for a vehicle further includes a filter 800, and the filter 800 is installed at the air inlet of the overcurrent protection valve 400. The filter 800 includes an end cap 810, a filter holder 820, and a filter screen 830, wherein the end cap 810 is sleeved on the second end of the housing 410 and detachably connected with the second end of the housing 410, specifically, the outer circumferential surface of the second end of the housing 410 is provided with threads, and the end cap 810 is in threaded fit with the second end of the housing 410. Of course, the connection relationship between the end cap 810 and the second end of the housing 410 is not limited thereto, and a buckle may be provided on the outer circumferential surface of the second end of the housing 410, a latch may be provided on the end cap 810, and the latch may be engaged with the buckle, or a latch may be provided on the outer circumferential surface of the second end of the housing 410, and a buckle may be provided on the end cap 810, and the latch may be engaged with the buckle. The filter support 820 is inserted in the second end of the casing 410, one end of the filter support 820 away from the valve body 100 is abutted with the end cover 810, the filter screen 830 is sleeved on the periphery of the filter support 820, the filter support 820 provides support for the filter screen 830, the filter screen 830 is used for filtering the gas entering the overcurrent protection valve 400, and impurities in the gas are prevented from entering the overcurrent protection valve 400, so that the overcurrent protection valve 400 cannot work normally. The filter screen 830 is a cylindrical welded three-layer sintered net structure, and has good pressure impact resistance.

In one embodiment of the present invention, as shown in fig. 2 and 4, the TPRD module 200 includes a bracket 210, a glass temperature sensing ball 220, a piston 230, a first spring 240 and a first sealing assembly 250, the inside of the bracket 210 is hollow, a first end of the bracket 210 is provided with an opening, a second end of the bracket 210 is provided with a blocking piece, the first end of the bracket 210 is mounted at the TPRD mounting port 121, in order to improve the tightness between the bracket 210 and the inner wall of the TPRD mounting port 121, the inner wall of the TPRD mounting port 121 is provided with an annular groove, and a sealing ring is disposed in the annular groove for sealing a gap between the bracket 210 and the inner wall of the TPRD mounting port 121.

The first end of the piston 230 is slidably inserted into the bracket 210 and is in sealing engagement with the bracket 210, the first end of the piston 230 is provided with an annular boss slidably engaged with the inner wall of the bracket 210, and in order to improve the sealing between the annular boss and the inner wall of the bracket 210, the outer circumferential surface of the annular boss is provided with an annular groove, and a sealing ring is provided in the annular groove for sealing a gap between the annular boss and the inner wall of the bracket 210.

The outer diameter of the second end of the piston 230 is smaller than the outer diameter of the first end of the piston 230, the outer diameter of the second end of the piston 230 is matched with the inner diameter of the second branch 113, and the second end of the piston 230 is inserted into the second branch 113. The second end of the piston 230 is provided with an annular groove, and the first sealing assembly 250 is disposed in the annular groove of the piston 230, the first sealing assembly 250 is used for sealing a gap between the second end of the piston 230 and the inner wall of the second branch 113, the first sealing assembly 250 comprises a retainer ring and a sealing ring, and the retainer ring is located on one side of the sealing ring facing the first spring 240.

Preferably, in order to facilitate installation of the first spring 240, the inner wall of the TPRD installation opening 121 is provided with a step, the first end of the first spring 240 is abutted against the step on the inner wall of the TPRD installation opening 121, and the second end of the first spring 240 is abutted against the annular boss. The glass temperature sensing ball 220 is disposed inside the bracket 210, and a first end of the glass temperature sensing ball 220 abuts against an end of the first end of the piston 230, specifically, in order to prevent the glass temperature sensing ball 220 from moving relatively to the piston 230, a positioning groove is disposed at the end of the first end of the piston 230, and the first end of the glass temperature sensing ball 220 abuts against the positioning groove. Similarly, in order to prevent the glass temperature sensing ball 220 from moving relative to the bracket 210, a positioning groove may be provided on the bracket 210, and the second end of the glass temperature sensing ball 220 abuts against the positioning groove of the bracket 210.

The working principle of TPRD module 200: when the external environment temperature reaches 110+ -5 ℃, the glass temperature sensing ball 220 is broken, and the piston 230 moves upwards under the action of the elasticity of the first spring 240 and the pressure of the gas cylinder due to lack of support, when the second end of the piston 230 leaves the second branch 113, the TPRD discharging port 120 is communicated with the TPRD mounting port 121, high-pressure hydrogen can enter the second branch 113 through the discharging channel 111, and then enter the TPRD discharging port 120 to be discharged by the second branch 113, so that the high-pressure hydrogen in the hydrogen storage bottle is prevented from explosion under fire. The TPRD module 200 employs the glass temperature sensing ball 220, and the activation condition and the discharge flow are stable, and no creep and jump phenomenon exists.

In one embodiment of the present invention, as shown in fig. 2 and 3, the high pressure solenoid valve module 300 includes a solenoid valve sleeve 310, a main valve packing 320, a main shutter 330, a coil 340, a yoke 350, a bobbin 360, and a valve core 540 assembly, the inside of the solenoid valve sleeve 310 is hollow, and the inside diameter of a first end of the solenoid valve sleeve 310 is larger than the inside diameter of a second end. The first end of the solenoid valve sleeve 310 is mounted to the solenoid valve mounting port 117, specifically, the inner wall of the solenoid valve mounting port 117 is provided with threads, the outer circumferential surface of the first end of the solenoid valve sleeve 310 is provided with threads, and the first end of the solenoid valve sleeve 310 is screw-fitted with the inner wall of the solenoid valve mounting port 117. In order to prevent leakage of gas through between the solenoid valve sleeve 310 and the inner wall of the solenoid valve mounting port 117, two sealing rings are provided through between the solenoid valve sleeve 310 and the inner wall of the solenoid valve mounting port 117.

The coil framework 360 is sleeved on the outer periphery of the second end of the electromagnetic valve sleeve 310, the coil 340 is sleeved on the outer periphery of the coil framework 360, and the yoke 350 is sleeved on the outer periphery of the coil 340; an annular step 311 is formed on the inner wall of the solenoid valve mounting opening 117. The main valve 330 is movably arranged in the solenoid valve sleeve 310, a certain movable space is formed between the main valve 330 and the inner wall of the solenoid valve sleeve 310 along the axial direction of the solenoid valve sleeve 310, a gap is formed between the main valve 330 and the inner wall of the solenoid valve sleeve 310, the gap is matched with the pilot hole 332 so that the pressures at the front end and the rear end of the main valve 330 are kept consistent, the main valve sealing gasket 320 is annular, the main valve sealing gasket 320 is arranged on one side of the main valve 330, which faces the annular step 311, a runner is arranged in the main valve 330 and is positioned at the central position of the main valve 330, and the central axis of the runner and the central axis of the main valve 330 are in the same straight line. The side of the main shutter 330 facing away from the annular step 311 is provided with a protrusion 331, and the protrusion 331 is provided with a pilot hole 332 communicating with the flow passage.

The valve core 540 assembly is arranged inside the electromagnetic valve sleeve 310 and is positioned at one side of the main valve 330, which is away from the annular step 311; the solenoid valve 540 assembly is used for controlling the pilot hole 332 to open under the magnetic field generated by the coil 340.

In one embodiment of the present invention, as shown in fig. 2 and 3, the valve core assembly includes a pilot sealing pad 370, a spring seat 371, a lower armature 372, an upper armature 373, a second spring 374, a stop 375 and a push rod 376, wherein a first end of the lower armature 372 is connected with the main valve 330 in a sleeved mode, specifically, a first limiting ring is disposed on an inner wall of one side of the main valve 330, which faces away from the annular step 311, a second limiting ring is disposed on an outer circumferential surface of the first end of the lower armature 372, the first end of the lower armature 372 is sleeved inside the main valve 330, the first limiting ring and the second limiting ring are in limiting fit in an axial direction, and a certain gap is formed between the first limiting ring and the second limiting ring in the axial direction, so that the lower armature 372 can move along the axial direction relative to the main valve 330. As shown in fig. 3, when the lower armature 372 moves leftward, the pilot gasket 370 contacts the boss 331 to seal the pilot hole 332, thereby achieving pilot valve closing; when the lower armature 372 moves rightward, the pilot seal 370 is separated from the boss 331, and the pilot hole 332 is opened, enabling pilot valve opening.

The first end of the upper armature 373 is sleeved at the second end of the lower armature 372, the upper armature 373 and the lower armature 372 form an armature assembly, and the upper armature 373 and the lower armature 372 can be connected through threads or pins, so that the upper armature 373 and the lower armature 372 can move synchronously along the axial direction. As shown in fig. 3, when the lower armature 372 moves leftward, the upper armature 373 also moves leftward together; as the lower armature 372 moves rightward, the upper armature 373 also moves rightward together.

The stop iron 375 is disposed in the solenoid valve sleeve 310 and is located at a side of the upper armature 373 facing away from the main shutter 330, and in order to improve the sealing performance, an annular groove is disposed on an outer circumferential surface of the stop iron 375, and a sealing ring is disposed in the annular groove. When the coil 340 is electrified to generate a magnetic field, the stop iron 375 and the armature assembly in the magnetic field generate electromagnetic force which attracts each other under the action of the magnetic field, and the armature assembly moves rightward under the action of the electromagnetic force, so that the pilot sealing gasket 370 is separated from the boss 331, and the pilot hole 332 is opened.

The spring seat 371 is movably disposed inside the lower armature 372, and the spring seat 371 is slidable along the axial direction of the lower armature 372, i.e., in the left-right direction in fig. 3. The pilot seal 370 is arranged at one side of the spring seat 371 facing the main valve 330, the second spring 374 is arranged in the upper armature 373, the first end of the second spring 374 is abutted against the spring seat 371, preferably, in order to prevent the second spring 374 from relatively moving in the radial direction with the spring seat 371, a first circular boss is arranged at one side of the spring seat 371 facing the second spring 374, the first end of the second spring 374 is sleeved on the first circular boss, and the first circular boss is arranged to limit the second spring 374 in the radial direction.

The ejector pin 376 is movably arranged in the upper armature 373, and the axis of the ejector pin 376 and the axis of the upper armature 373 are in the same straight line. The first end of the ejector rod 376 abuts against the second end of the second spring 374, and preferably, in order to prevent the second spring 374 from moving relatively to the ejector rod 376 in the radial direction, a second circular boss is disposed at the end of the first end of the ejector rod 376, and the second end of the second spring 374 is sleeved on the second circular boss. The end of the second end of the upper armature 373 is provided with a through hole, the outer diameter of the second end of the ejector rod 376 is smaller than the outer diameter of the first end of the ejector rod 376, and the second end of the ejector rod 376 extends out of the through hole from the second end of the upper armature 373 and is abutted against the stop iron 375.

In a preferred embodiment of the present invention, as shown in fig. 3, the high-pressure solenoid valve module 300 further includes a locking screw 377, and a guide hole 378 is formed in the locking screw 377, and the guide hole 378 extends in a length direction of the locking screw 377 and penetrates the locking screw 377. The locking screw 377 sequentially penetrates through the main valve sealing gasket 320 and the flow channel, one end of the diversion hole 378 is communicated with the first branch 112, and the other end of the diversion hole 378 is communicated with the flow channel. The locking screw 377 is used to fix the main valve packing 320 and to communicate the first branch 112 with the flow passage, the maximum outer diameter of the locking screw 377 being smaller than the inner diameter of the annular step 311.

The operating principle of the high-pressure solenoid valve module 300:

a. and (3) opening a pilot valve: after the coil 340 is electrified, a magnetic field is generated, the stop iron 375 and the armature component in the magnetic field generate electromagnetic force which attracts each other under the action of the magnetic field, and the armature component moves rightwards under the action of the electromagnetic force, so that the pilot sealing gasket 370 is separated from the boss 331, the pilot hole 332 is opened, and the pilot valve is opened.

b. The main valve is opened: after the pilot valve is opened, high-pressure hydrogen enters the solenoid valve mounting port 117 through the main channel 110, then enters the right side of the main valve 330 through a gap between the main valve 330 and the inner wall of the solenoid valve sleeve 310, and then rapidly discharges to the downstream of the main valve through the pilot hole 332, and when the pressure of the downstream of the main valve and the pressure of the upstream of the main valve are balanced, the main valve 330 moves rightward under the action of electromagnetic force, so that the main valve is opened.

c. The closing process of the electromagnetic valve: when the hydrogen storage system ECU sends a closing instruction of the electromagnetic valve, the magnetic field inside the coil 340 disappears, the electromagnetic force exerted by the armature assembly disappears, the armature assembly moves leftwards under the action of the second spring 374, the pilot gasket 370 contacts the pilot hole 332, so that the pilot hole 332 is closed, the pilot valve is closed, then the main valve 330 continues to move leftwards under the action of the pressure difference and the elastic force of the second spring 374, so that the main valve gasket 320 contacts the annular step 311, and the electromagnetic valve is closed.

The main valve of the high-pressure valve module 300 provided by the invention is opened without depending on the upstream and downstream pressure difference force of the main valve, so that the electromagnetic valve has no minimum working pressure requirement, zero-pressure opening can be realized, and the tightness is good; due to the adoption of the design of the distributed direct-acting high-pressure solenoid valve: the electromagnetic valve has no minimum working pressure requirement, can be opened under zero air pressure, and has good sealing performance.

In a preferred embodiment of the present invention, as shown in fig. 5, the over-current protection valve 400 includes a housing 410, an over-current valve shutter 420, and an over-current valve spring 430, an inner wall of the over-current protection valve mounting port 119 is formed with a first sealing slope, the housing 410 is in a tubular structure, an inside of the housing 410 is hollow, a first end of the housing 410 is mounted to the over-current protection valve mounting port 119, specifically, an inner wall of the over-current protection valve mounting port 119 is provided with threads, an outer circumferential surface of the first end of the housing 410 is also provided with threads, and the over-current protection valve mounting port 119 is screw-fitted with the first end of the housing 410. The outer peripheral surface of the first end of the over-current valve 420 is provided with a limit step, the over-current valve spring 430 is sleeved on the outer periphery of the over-current valve 420, the first end of the over-current valve spring 430 is in butt joint with the limit step, the second end of the over-current valve spring 430 is in butt joint with the inner wall of the over-current protection valve mounting port 119, and in order to facilitate mounting of the over-current valve spring 430, the inner wall of the over-current protection valve mounting port 119 is provided with an annular step, and the first end of the over-current valve spring 430 is in butt joint with the spring. The sidewall of the second end of the over-flow valve shutter 420 is provided with a through hole, and the end of the second end of the over-flow valve shutter 420 is used for sealing fit with the first sealing inclined surface.

The operation principle of the overcurrent protection valve 400: when in installation, the second end of the shell 410 is arranged in the high-pressure gas cylinder, the high-pressure gas of the high-pressure gas cylinder firstly enters the shell 410 through the end cover 810, is filtered by the filter 800, enters the inside of the overflow valve 420, and then enters the main channel 110 through the through hole of the overflow valve 420; when the pressure of the high pressure gas cylinder is excessively high, the excess flow valve spring 430 is further compressed, and the end of the second end of the excess flow valve shutter 420 is in sealing engagement with the first sealing slope, thereby closing the main passage 110.

In a preferred embodiment of the present invention, as shown in fig. 6, the inner wall of the manual cut-off valve mounting port 124 is formed with a second sealing slope, and the manual cut-off valve module 500 includes a valve cap 510, a valve stem 520, a friction ring 530, a valve core 540, and a shutter 550, the valve cap 510 having a hollow tubular structure, the valve cap 510 being mounted to the manual cut-off valve mounting port 124, the valve cap 510 being screw-fitted with the manual cut-off valve mounting port 124. The valve rod 520 is the shaft-like structure, and valve rod 520 sets up in the inside of valve gap 510, and the tip of valve rod 520 first end is provided with interior hexagonal hole, and the first end and the valve gap 510 normal running fit of valve rod 520, friction ring 530 cover locate the periphery of valve rod 520 first end to reduce the frictional force between valve rod 520 and the valve gap 510.

The valve core 540 is of an annular structure, the valve core 540 is arranged in the valve cover 510, external threads are arranged on the outer peripheral surface of the valve core 540, internal threads are arranged on the inner wall of the valve cover 510, and the valve core 540 is in threaded connection with the inner wall of the valve cover 510 through matching of the internal threads and the external threads. The valve core 540 is provided with the grafting groove near the one end of valve rod 520, and the grafting groove is the rectangle groove in this embodiment, of course, the grafting groove also can be regular hexagon cell body or regular pentagon cell body, and the second end of valve rod 520 is provided with grafting portion, and the transversal rectangle of personally submitting of grafting portion in this embodiment, of course, the cross section of grafting portion also can be regular pentagon or regular hexagon, and grafting portion inserts and locates the grafting inslot. The valve 550 is disposed at an end of the valve core 540 away from the valve stem 520, and the valve 550 is configured to be in sealing engagement with the second sealing bevel. Specifically, the end of the valve core 540 remote from the end of the valve stem 520 is provided with a mounting hole, and the shutter 550 is disposed in the mounting hole. The valve 550 is made of PEEK material, and the valve 550 and the valve body 100 are sealed soft and hard, so that good sealing performance can be realized under a small tightening torque.

Further, in order to improve the sealing performance, an annular groove is formed in the outer circumferential surface of the valve rod 520, a sealing ring is arranged in the annular groove, two annular grooves are formed, and a retainer ring is further arranged in one of the annular grooves. Similarly, the outer circumferential surface of the valve cover 510 is also provided with an annular groove, and a sealing ring and a retainer ring are arranged in the annular groove.

Principle of operation of manual shut-off valve module 500: when the tool rotates the valve rod 520 to rotate in the first direction, the valve rod 520 drives the valve core 540 to rotate, and under the action of the threads, the valve core 540 slides in a direction away from the valve rod 520 because the inner wall of the valve cover 510 is in threaded fit with the valve core 540, and the valve core 540 drives the valve 550 to seal the manual stop valve mounting opening 124, so that gas cannot be discharged; when the tool rotates the valve rod 520 to rotate in the direction opposite to the first direction, the valve rod 520 drives the valve core 540 to rotate, and under the action of the threads, the valve core 540 moves in the direction approaching to the valve rod 520 because the inner wall of the valve cover 510 is in threaded fit with the valve core 540, the valve core 540 drives the valve 550 to be far away from the manual stop valve mounting opening 124, and high-pressure gas can be discharged outwards through the manual stop valve mounting opening 124.

The manual stop valve module 500 provided by the invention adopts an unloading structure, and is free from the influence of the air pressure of high-pressure air in the air bottle when being opened and closed, so that the torque required by the switch is smaller, the service life is long, and meanwhile, the manual valve core 540 is of a ball head structure and has self-adaptability.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a vehicle high-pressure hydrogen storage bottle combination valve which characterized in that includes:

the valve body is internally provided with a main channel, a discharge channel, a first branch, a second branch, a third branch, a fourth branch and a fifth branch, and is provided with an electromagnetic valve mounting port, an inlet/outlet interface, an overcurrent protection valve mounting port, a TPRD discharging port, a TPRD mounting port, a discharge valve mounting port and a manual stop valve mounting port; the fifth branch is communicated with the bleeder valve mounting port, the manual stop valve mounting port and the inlet/outlet port, the main channel is communicated with the overcurrent protection valve mounting port and the electromagnetic valve mounting port, and the electromagnetic valve mounting port is communicated with the fifth branch through the first branch; the discharging channel is communicated with the TPRD installing port through a second branch, and the TPRD discharging port is communicated with the TPRD installing port through a third branch; the bleed passage communicates with the fifth branch through the fourth branch;

the TPRD module is arranged at the TPRD installation port;

the high-voltage electromagnetic valve module is arranged at the electromagnetic valve installation port;

the overcurrent protection valve is arranged at the overcurrent protection valve mounting port;

the manual stop valve module is arranged at the manual stop valve mounting port;

and the relief valve module is arranged at the relief valve mounting port.

2. The combination valve for a high pressure hydrogen storage cylinder for a vehicle as set forth in claim 1, further comprising:

and the temperature sensor module is arranged at the temperature detection port.

3. The high-pressure hydrogen storage cylinder combined valve for vehicles according to claim 1, wherein the valve body is provided with a pressure detection port, a sixth branch is arranged in the valve body, and the first branch is communicated with the pressure detection port through the sixth branch.

4. The combination valve for a high pressure hydrogen storage cylinder for a vehicle as set forth in claim 1, further comprising:

and the filter is arranged at the air inlet of the overcurrent protection valve.

5. The combination valve for a high-pressure hydrogen storage cylinder for a vehicle according to any one of claims 1 to 4, wherein the TPRD module comprises a bracket, a glass temperature sensing ball, a piston, a first spring and a first sealing assembly, the bracket is mounted at the TPRD mounting port, a first end of the piston is slidably inserted into the bracket and is in sealing fit with the bracket, the first end of the piston is provided with an annular boss, a second end of the piston is provided with an annular groove, the second end of the piston is inserted into the second branch, and the first sealing assembly is arranged in the annular groove of the piston; the first end of the first spring is abutted with the inner wall of the TPRD mounting port, and the second end of the first spring is abutted with the annular boss; the glass temperature sensing ball set up in the inside of support, the first end of glass temperature sensing ball with the tip butt of piston first end, the second end of glass temperature sensing ball with the support butt.

6. The combination valve for a high-pressure hydrogen storage cylinder for a vehicle according to any one of claims 1 to 4, wherein the high-pressure solenoid valve module comprises a solenoid valve sleeve, a main valve gasket, a main valve, a coil, a yoke, a coil bobbin and a valve core assembly, a first end of the solenoid valve sleeve is mounted at the solenoid valve mounting port, the coil bobbin is sleeved at the outer periphery of a second end of the solenoid valve sleeve, the coil is sleeved at the outer periphery of the coil bobbin, and the yoke is sleeved at the outer periphery of the coil; an annular step is formed on the inner wall of the electromagnetic valve mounting opening;

the main valve is movably arranged in the electromagnetic valve sleeve, a gap is formed between the main valve and the inner wall of the electromagnetic valve sleeve, the main valve sealing gasket is arranged on one side of the main valve, which faces the annular step, the inside of the main valve is provided with a flow passage, one side of the main valve, which faces away from the annular step, is provided with a bulge, and the bulge is provided with a pilot hole communicated with the flow passage; the valve core assembly is arranged in the electromagnetic valve sleeve and is positioned at one side of the main valve, which is away from the annular step; the electromagnetic valve core component is used for controlling the pilot hole to be opened under the action of a magnetic field generated by the coil.

7. The combination valve for a high pressure hydrogen storage cylinder for a vehicle of claim 6, wherein the valve core assembly comprises a pilot gasket, a spring seat, a lower armature, an upper armature, a second spring, a stop iron and a push rod, a first end of the lower armature is sleeved with the main valve, and a first end of the upper armature is sleeved with a second end of the lower armature; the stop iron is arranged in the electromagnetic valve sleeve and is positioned at one side of the upper armature iron, which is away from the main valve; the pilot sealing gasket is arranged on one side of the spring seat, which faces the main valve, the second spring is arranged in the upper armature, the first end of the second spring is abutted to the spring seat, the ejector rod is movably arranged in the upper armature, the first end of the ejector rod is abutted to the second end of the second spring, and the second end of the ejector rod extends out from the second end of the upper armature and is abutted to the stop iron.

8. The combination valve for a high-pressure hydrogen storage cylinder for a vehicle according to claim 6, wherein the high-pressure solenoid valve module further comprises:

the locking screw is internally provided with a diversion hole, and sequentially penetrates through the main valve sealing gasket and the flow channel, and the diversion hole is communicated with the flow channel.

9. The high-pressure hydrogen storage cylinder combined valve for a vehicle according to any one of claims 1 to 4, wherein the over-current protection valve comprises a housing, an over-current valve door and an over-current valve spring, a first sealing inclined surface is formed on the inner wall of the over-current protection valve mounting port, a first end of the housing is mounted on the over-current protection valve mounting port, the interior of the housing is hollow, a limit step is formed on the outer peripheral surface of the first end of the over-current valve door, the over-current valve spring is sleeved on the outer periphery of the over-current valve door, the first end of the over-current valve spring is abutted with the limit step, a through hole is formed on the side wall of the second end of the over-current valve door, and the end of the second end of the over-current valve door is used for being in sealing fit with the first sealing inclined surface.

10. The high-pressure hydrogen storage cylinder combined valve for vehicles according to any one of claims 1 to 4, wherein a second sealing inclined surface is formed on the inner wall of the manual stop valve mounting port, the manual stop valve module comprises a valve cover, a valve rod, a friction ring, a valve core and a valve door, the valve cover is mounted on the manual stop valve mounting port, the valve rod is arranged in the valve cover, the first end of the valve rod is in rotary fit with the valve cover, the friction ring is sleeved on the periphery of the first end of the valve rod, the valve core is arranged in the valve cover and in threaded fit with the inner wall of the valve cover, an inserting groove is formed at one end, close to the valve rod, of the valve core, and an inserting part is arranged at the second end of the valve rod and is inserted in the inserting groove; the valve is arranged at one end of the valve core, which is far away from the valve rod, and the valve is used for being matched with the second sealing inclined plane in a sealing way.