CN117662987A - Hydrogenation mouth and vehicle - Google Patents

Abstract

The invention discloses a hydrogenation port and a vehicle, wherein the hydrogenation port comprises a body, a first sealing ring, a valve core and a spring, the body is provided with an inlet hole section, a mounting hole section and an outlet hole section which are sequentially connected along a first direction, the peripheral wall of the mounting hole section is provided with a first annular groove, the wall surface of the inlet hole section comprises a first step surface, the first sealing ring is matched in the first annular groove, the valve core is slidably matched in the mounting hole section along the first direction, the valve core is provided with a first critical position and a second critical position, in the first critical position, the valve core is in interference fit in the first sealing ring, the valve core is abutted with the first step surface, in the second critical position, the valve core is spaced from the first step surface, a first channel for communicating the inlet hole section and the outlet hole section is formed between the valve core and the peripheral wall of the mounting hole section, the spring is positioned in the mounting hole section and connected with the body and the valve core, and the valve core is pressed towards the first critical position by the spring. The hydrogenation port provided by the invention has the advantages of high sealing reliability and long service life.

Description

Hydrogenation mouth and vehicle

Technical Field

The invention relates to the technical field of hydrogenation devices, in particular to a hydrogenation port and 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 combination valve, a pressure reducing valve, a safety valve, a relief valve, a pressure sensor, a pipeline joint and the like. The hydrogenation port is a core part of the vehicle-mounted hydrogen storage system and is used for being in butt joint with the hydrogenation gun to fill the vehicle-mounted hydrogen storage bottle. The hydrogenation port needs to ensure tightness and prevent the danger caused by hydrogen leakage. In the related art, the valve core and the valve seat are often sealed by a sealing ring, but the aging of the sealing ring and the hydrogen permeation phenomenon are easy to occur after long-time use.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the invention provides the hydrogenation port, which has the advantages of high sealing reliability and long service life.

The embodiment of the invention also provides a vehicle.

The hydrogenation port comprises a body, a first sealing ring, a valve core and a spring, wherein the body is provided with an inlet hole section, a mounting hole section and an outlet hole section which are sequentially connected along a first direction, a first annular groove is formed in the peripheral wall, adjacent to the inlet hole section, of the mounting hole section, and the wall surface, adjacent to the mounting hole section, of the inlet hole section comprises a first step surface; the first sealing ring is matched in the first annular groove; the valve core is slidably matched in the mounting hole section along the first direction, the valve core is provided with a first critical position and a second critical position, the valve core is in interference fit in the first sealing ring at the first critical position, the valve core is abutted with the first step surface, the valve core is spaced from the first step surface at the second critical position, and a first channel for communicating the inlet hole section and the outlet hole section is formed between the valve core and the peripheral wall of the mounting hole section; the spring is located in the mounting hole section and connects the body and the valve core, and the spring presses the valve core towards the first critical position.

According to the hydrogenation port provided by the embodiment of the invention, before and after hydrogen is filled, the valve core is kept at the first critical position under the action of the spring, at the moment, the valve core is in interference fit in the first sealing ring, the first sealing ring realizes elastic sealing at the joint of the valve core and the body, and meanwhile, the valve core is abutted with the first step surface of the body to seal the inlet hole section, so that the hard sealing at the joint of the valve core and the body is realized. At this time, the two-stage sealing mode of the hydrogenation port ensures that the sealing reliability of the hydrogenation port is higher and the service life is longer. In addition, in the process of filling hydrogen, the valve core is separated from the first critical position and slides relative to the first sealing ring, at the moment, the first annular groove realizes the limit of the first sealing ring in the first direction, so that the first sealing ring is effectively prevented from falling off and misplacement, and the sealing reliability of the valve core when the valve core is reset to the first critical position is further ensured.

In some embodiments, the diameter of the first stepped surface decreases gradually in a direction approaching the inlet port section, and an end surface of the valve element adjacent to the inlet port section is a spherical surface.

In some embodiments, the hydrogenation port further comprises a guide sleeve, the guide sleeve is fixedly arranged in the mounting hole section, the guide sleeve is provided with a guide hole penetrating through the guide sleeve along the first direction, the wall surface of the guide hole comprises a second step surface adjacent to the outlet hole section, the valve core is slidably matched in the guide hole, and the spring is matched in the guide hole and is clamped between the second step surface and the valve core.

In some embodiments, an end surface of the valve core facing the outlet hole section is provided with a matching hole, a part of the spring is matched in the matching hole, and at least four second channels which are communicated with the first channel and the outlet hole section are formed between the outer peripheral surface of the guide sleeve and the peripheral wall of the mounting hole section.

In some embodiments, a second annular groove is provided on one of the peripheral wall of the guide hole and the outer peripheral surface of the valve element, and the hydrogenation port further includes a piston ring fitted in the second annular groove, the piston ring being pressed against the other of the peripheral wall of the guide hole and the outer peripheral surface of the valve element.

In some embodiments, the second annular groove is arranged on the peripheral wall of the guide hole, the hydrogenation port further comprises a corrugated ring, the corrugated ring comprises arc-shaped bending sections which are sequentially connected end to end along the circumferential direction of the corrugated ring, the bending direction of the arc-shaped bending sections is consistent with the axial direction of the corrugated ring, the corrugated ring is matched in the second annular groove, and the corrugated ring is clamped between the expansion ring and the wall surface of the guide hole.

In some embodiments, the hydrogenation port further comprises a screen and a bracket, the screen being coupled to the bracket, the bracket being positioned within the inlet port section and coupled to the body, the screen closing the inlet port section opening adjacent the mounting port section.

In some embodiments, the wall surface of the inlet hole section further comprises a third stepped surface facing away from the mounting hole section, the screen is welded to the bracket, the screen surrounds a sleeve structure, the axial direction of the screen is consistent with the first direction, the screen is spaced from the peripheral wall of the inlet hole section, and one axial end of the screen is engaged with the third stepped surface.

In some embodiments, the body includes a valve seat threadably connected to the end cap, an end cap sandwiched between the valve seat and the end cap, the end cap forming the outlet orifice section, and a valve body, the valve seat and the valve body together forming the mounting orifice section and the inlet orifice section.

A vehicle according to an embodiment of the invention comprises a hydrogenation port as described in any of the embodiments above.

The technical advantages of the vehicle according to the embodiment of the present invention are the same as those of the hydrogenation port of the above embodiment, and will not be described here again.

Drawings

FIG. 1 is a cross-sectional view of a hydrogenation port according to an embodiment of the invention.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is an enlarged view of B in fig. 1.

FIG. 4 is a schematic view of a corrugated ring in a hydrogenation port according to an embodiment of the invention.

Reference numerals:

1. a valve body; 11. an inlet aperture section; 111. a first annular groove; 2. a valve seat; 21. a mounting hole section; 211. a first step surface; 3. an end cap; 31. an outlet aperture section; 4. a first seal ring; 5. a valve core; 51. a spherical surface; 6. a spring; 7. a guide sleeve; 71. a guide hole; 72. a second step surface; 8. a filter screen; 9. a bracket; 10. a piston ring; 101. a corrugated ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The hydrogenation port according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

The hydrogenation port according to the embodiment of the invention comprises a body, a first sealing ring 4, a valve core 5 and a spring 6. The body has an inlet aperture section 11, a mounting aperture section 21 and an outlet aperture section 31 joined in this order in a first direction, the peripheral wall of the mounting aperture section 21 adjacent to the inlet aperture section 11 being provided with a first annular groove 111, the wall of the inlet aperture section 11 comprising a first stepped surface 211 adjacent to the mounting aperture section 21. The first seal ring 4 is fitted in the first annular groove 111. The spool 5 is slidably fitted in the mounting hole section 21 in the first direction, and the spool 5 has a first critical position and a second critical position. In the first critical position, the valve core 5 is in interference fit in the first sealing ring 4, the valve core 5 is in abutting contact with the first stepped surface 211, in the second critical position, the valve core 5 is spaced from the first stepped surface 211, and a first channel for communicating the inlet hole section 11 and the outlet hole section 31 is formed between the valve core 5 and the peripheral wall of the mounting hole section 21. A spring 6 is located in the mounting hole section 21 and connects the body and the valve spool 5, the spring 6 urging the valve spool 5 towards the first critical position.

According to the hydrogenation port provided by the embodiment of the invention, before and after hydrogen is filled, the valve core 5 is kept at the first critical position under the action of the spring 6, at this time, the valve core 5 is in interference fit in the first sealing ring 4, the first sealing ring 4 realizes elastic sealing at the joint of the valve core 5 and the body, and meanwhile, the valve core 5 is abutted with the first step surface 211 of the body to seal the inlet hole section 11, so that the hard sealing at the joint of the valve core 5 and the body is realized. At this time, the two-stage sealing mode of the hydrogenation port ensures that the sealing reliability of the hydrogenation port is higher and the service life is longer. In addition, in the process of filling hydrogen, the valve core 5 is separated from the first critical position and slides relative to the first sealing ring 4, at this time, the first annular groove 111 realizes the limit of the first sealing ring 4 in the first direction, so that the first sealing ring 4 is effectively prevented from falling off and misplacement, and the sealing reliability of the valve core 5 when the valve core 5 is reset to the first critical position is further ensured.

The body includes a valve seat 2, an end cover 3, and a valve body 1, the valve seat 2 is screwed to the end cover 3, the valve body 1 is clamped between the valve seat 2 and the end cover 3, the end cover 3 forms an outlet hole section 31, the valve seat 2 and the valve body 1 together form a mounting hole section 21 and an inlet hole section 11, and a first annular groove 111 and a first stepped surface 211 are formed on the valve seat 2.

In some embodiments, as shown in fig. 2, the diameter of the first stepped surface 211 gradually decreases in a direction approaching the inlet port section 11, and the end surface of the valve spool 5 adjacent to the inlet port section 11 is a spherical surface 51.

That is, when the valve core 5 is located at the first critical position, the spherical surface 51 of the valve core 5 abuts against the first stepped surface 211, at this time, the contact surface between the spherical surface 51 and the first stepped surface 211 is larger, the self-adaptability is good, the influence of processing errors on the sealing performance is effectively reduced, and the hard sealing reliability of the valve core 5 and the body is higher.

Specifically, the first stepped surface 211 is a conical surface, and when the outlet pressure of the hydrogenation port is less than or equal to 0.5MPa, the sealing specific pressure formed by the valve core 5 and the valve seat 2 is small, and at this time, the sealing is mainly performed by the first sealing ring 4. When the outlet pressure is greater than 0.5MPa, the sealing specific pressure formed by the valve core 5 and the valve seat 2 is larger, the valve core 5 and the valve seat 2 are mainly in hard sealing through the close fit between the spherical surface 51 and the first step surface 211, and the sealing reliability and service life of the hydrogenation port are effectively improved by combining the sealing of the first sealing ring 4.

In some embodiments, as shown in fig. 1, the hydrogenation port further includes a guide sleeve 7, the guide sleeve 7 is fixedly arranged in the mounting hole section 21, the guide sleeve 7 is provided with a guide hole 71 penetrating the guide sleeve 7 along the first direction, the wall surface of the guide hole 71 includes a second step surface 72 adjacent to the outlet hole section 31, the valve core 5 is slidably matched in the guide hole 71, and the spring 6 is matched in the guide hole 71 and is clamped between the second step surface 72 and the valve core 5.

The guide sleeve 7 is clamped between the end cover 3 and the valve seat 2, and the guide hole 71 in the guide sleeve 7 ensures the sliding stability of the valve core 5 along the first direction. Meanwhile, the spring 6 is limited in the guide hole 71, and the reliability of resetting the valve core 5 by the spring 6 is high.

In some embodiments, as shown in fig. 1 and 2, the end surface of the valve core 5 facing the outlet hole section 31 is provided with a fitting hole, in which a part of the spring 6 is fitted, and at least four second passages communicating the first passage and the outlet hole section 31 are formed between the outer peripheral surface of the guide sleeve 7 and the peripheral wall of the mounting hole section 21.

Therefore, when the valve core 5 is ensured to have enough sliding travel and the spring 6 is ensured to have deformation of enough length, the maximum size of the valve core 5 and the guide sleeve 7 along the first direction is not too large, so that the structure of the hydrogenation port is more compact. In addition, the design of at least four second channels can effectively improve the hydrogen fluid speed, and can realize 300g/s hydrogen high-flow filling.

In some embodiments, as shown in fig. 3, a second annular groove is provided on one of the peripheral wall of the guide hole 71 and the outer peripheral surface of the valve element 5, and the hydrogenation port further includes a packing 10, the packing 10 being fitted into the second annular groove, the packing 10 being pressed against the other of the peripheral wall of the guide hole 71 and the outer peripheral surface of the valve element 5.

The piston ring 10 effectively increases the sliding resistance of the valve core 5 in the guide hole 71, when the hydrogen is filled, if the inlet pressure is insufficient to enable the valve core 5 to move to the second critical position, the valve core 5 and the spring 6 do not frequently reciprocate to slide under the damping action of the piston ring 10 in the dynamic unbalance process of the small pressure difference, the spherical surface 51 of the valve core 5 does not frequently collide with the first step surface 211 of the valve seat 2, so that the spherical surface 51 of the valve core 5 and the first step surface 211 of the valve seat 2 are effectively prevented from being impacted and worn, and the sealing performance and the service life of a hydrogenation port are effectively improved.

In some embodiments, as shown in fig. 1, 3 and 4, the second annular groove is disposed on the peripheral wall of the guide hole 71, the hydrogenation port further comprises a corrugated ring 101, the corrugated ring 101 comprises arc-shaped bending sections which are sequentially connected end to end along the circumferential direction of the corrugated ring, the bending direction of the arc-shaped bending sections is consistent with the axial direction of the corrugated ring 101, the corrugated ring 101 is matched in the second annular groove, and the corrugated ring 101 is clamped between the piston ring 10 and the wall surface of the guide hole 71.

At this time, the bellows ring 101 can counteract the reduction of the pressing force between the piston ring 10 and the valve core 5 caused by the contraction of the piston ring 10 at low temperature through the elastic deformation of the arc-shaped bending section, thereby further ensuring the sliding friction force between the piston ring 10 and the valve core 5 and further avoiding the occurrence of the flutter phenomenon of the valve core 5.

Specifically, the bellows ring 101 is made of an elastic alloy material. The piston ring 10 is made of polytetrafluoroethylene or perfluoroethylene propylene.

In some embodiments, as shown in fig. 1, the hydrogenation port further comprises a filter screen 8 and a support 9, the filter screen 8 being connected to the support 9, the support 9 being located within the inlet port section 11 and being connected to the body, the filter screen 8 closing the opening of the inlet port section 11 adjacent to the mounting port section 21. The filter screen 8 can realize the filtration to hydrogen, and convenient reverse purging and change.

Specifically, the wall surface of the inlet hole section 11 further includes a third stepped surface facing away from the mounting hole section 21, the filter screen 8 is welded to the bracket 9, the filter screen 8 surrounds the sleeve structure, the axial direction of the filter screen 8 is consistent with the first direction, the filter screen 8 is spaced apart from the peripheral wall of the inlet hole section 11, and one axial end of the filter screen 8 is engaged with the third stepped surface. Thereby further reducing the flow resistance of hydrogen at the filter screen 8 and achieving a better filtering effect.

A vehicle according to an embodiment of the invention comprises a hydrogenation port according to any of the embodiments described above.

The technical advantages of the vehicle according to the embodiment of the present invention are the same as those of the hydrogenation port of the above embodiment, and will not be described here again.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features 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.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean 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 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.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims (10)

1. A hydrogenation port comprising:

the body is provided with an inlet hole section, a mounting hole section and an outlet hole section which are sequentially connected along a first direction, the peripheral wall of the mounting hole section adjacent to the inlet hole section is provided with a first annular groove, and the wall surface of the inlet hole section comprises a first step surface adjacent to the mounting hole section;

the first sealing ring is matched in the first annular groove;

a spool slidably fitted in the mounting hole section in the first direction, the spool having a first critical position in which the spool is interference-fitted in the first seal ring, the spool abutting against the first stepped surface, and a second critical position in which the spool is spaced apart from the first stepped surface, a first passage communicating the inlet hole section and the outlet hole section being formed between the spool and a peripheral wall of the mounting hole section; and

and the spring is positioned in the mounting hole section and is connected with the body and the valve core, and the spring presses the valve core towards the first critical position.

2. The hydrogenation port according to claim 1, wherein the diameter of the first stepped surface gradually decreases in a direction approaching the inlet port section, and an end face of the valve element adjacent to the inlet port section is a spherical surface.

3. The hydrogenation port according to claim 1, further comprising a guide sleeve secured within the mounting bore section, the guide sleeve having a guide bore extending therethrough in the first direction, a wall surface of the guide bore including a second stepped surface adjacent the outlet bore section, the valve cartridge slidably engaged within the guide bore, the spring engaged within the guide bore and sandwiched between the second stepped surface and the valve cartridge.

4. A hydrogenation port according to claim 3, wherein the end face of said valve core facing said outlet port section is provided with a fitting hole, a part of said spring is fitted in said fitting hole, and at least four second passages communicating said first passage and said outlet port section are formed between the outer peripheral surface of said guide sleeve and the peripheral wall of said mounting port section.

5. The hydrogenation port according to claim 3, wherein a second annular groove is provided in one of the peripheral wall of the pilot hole and the outer peripheral surface of the valve element, and the hydrogenation port further comprises a piston ring fitted in the second annular groove, the piston ring being pressed against the other of the peripheral wall of the pilot hole and the outer peripheral surface of the valve element.

6. The hydrogenation port according to claim 5, wherein the second annular groove is disposed on the peripheral wall of the guide hole, the hydrogenation port further comprises a corrugated ring, the corrugated ring comprises arc-shaped bending sections which are sequentially connected end to end along the circumferential direction of the corrugated ring, the bending direction of the arc-shaped bending sections is consistent with the axial direction of the corrugated ring, the corrugated ring is fitted in the second annular groove, and the corrugated ring is clamped between the piston ring and the wall surface of the guide hole.

7. The hydrogenation port according to any one of claims 1-6 further comprising a screen and a bracket, said screen being connected to said bracket, said bracket being located within said inlet port section and connected to said body, said screen closing an opening of said inlet port section adjacent said mounting port section.

8. The hydrogenation port according to claim 7 wherein the wall of said inlet port section further comprises a third stepped surface facing away from said mounting port section, said screen being welded to said support, said screen surrounding a sleeve structure, said screen having an axial direction coincident with said first direction, said screen being spaced from the peripheral wall of said inlet port section, an axial end of said screen engaging said third stepped surface.

9. The hydrogenation port of claim 6 wherein the body comprises a valve seat, an end cap and a valve body, the valve seat threadably connected to the end cap, the valve body sandwiched between the valve seat and the end cap, the end cap forming the outlet port section, the valve seat and the valve body together forming the mounting port section and the inlet port section.

10. A vehicle comprising a hydrogenation port according to any one of claims 1-9.