CN219367422U - Integrated hydrogenation device - Google Patents

Abstract

The utility model discloses an integrated hydrogenation device, which comprises an outer shell, a valve body, a valve seat, a one-way valve and a filter assembly, wherein a first upstream air passage and a second upstream air passage are arranged in the outer shell, and a first step surface is formed at the joint of the first upstream air passage and the second upstream air passage; the valve body is assembled with the outer shell, and a second airflow channel is arranged in the valve body; the valve seat limiting clamp is arranged between the outer shell and the valve body, and a first vent hole is formed in the valve seat limiting clamp; the one-way valve is elastically arranged in the second airflow channel, and one end of the one-way valve is abutted against the valve seat; the filter assembly is arranged in the second upstream air passage and comprises a filter element and an elastic sealing piece, when the pressure of hydrogen to the elastic sealing piece is larger than a set elastic value, the elastic sealing piece contracts, and the elastic sealing piece is arranged at intervals with the first step surface; when the pressure of the hydrogen to the elastic sealing element is smaller than a set elastic value, the elastic sealing element rebounds, and the elastic sealing element is abutted with the first step surface. Therefore, the elastic sealing element can play a role in auxiliary sealing, and the back flow of hydrogen is effectively blocked.

Description

Integrated hydrogenation device

Technical Field

The utility model belongs to the technical field of hydrogen storage systems, and particularly relates to an integrated hydrogenation device.

Background

The conventional high-pressure gas cylinder is generally provided with a filter and a cylinder valve, the cylinder valve comprises a module which is independently arranged such as an overflow valve, a manual stop valve and the like, and the filter, the overflow valve, the manual stop valve and the like are required to be connected through a pipeline so as to filter and control the flow of the conveyed hydrogen, but the pipeline connection point in the hydrogen pipeline is certainly increased, so that the flow resistance of the hydrogen is increased, and the hydrogen filling quantity is insufficient and the filling is slow.

In the prior art, the utility model patent with the application number of 202020986877.3 provides a high-pressure hydrogenation valve, in the hydrogenation valve, a valve body and a valve cover are assembled, a filter element is arranged in a first gas channel in the valve body to filter hydrogen, a one-way valve is arranged in a second gas channel in the valve cover, and the hydrogen enters a hydrogen tank after passing through the first channel and the second channel, so that the flow path of the hydrogen is shortened, and the flow resistance of the hydrogen is reduced. However, when the valve core in the hydrogenation valve is damaged, the sealing effect of the valve core is poor, so that hydrogen in the tank can flow back into the hydrogenation device through the second channel and the first channel, and the hydrogen is caused to flow back.

Based on the foregoing, there is a need for an integrated hydrogenation apparatus to solve the technical problems in the prior art.

Disclosure of Invention

The utility model aims to provide an integrated hydrogenation device, which solves the problem of reduced sealing performance when a valve core in the existing hydrogen pressurizing valve is damaged, and ensures the safety and reliability of hydrogen sealing.

To achieve the purpose, the utility model adopts the following technical scheme:

an integrated hydrogenation unit comprising:

the outer shell is internally provided with a first air flow channel, the first air flow channel comprises a first upstream air channel and a second upstream air channel, the inner diameters of the first upstream air channel and the second upstream air channel are sequentially increased along the air conveying direction, and a first step surface is formed at the joint of the first upstream air channel and the second upstream air channel;

the valve body is assembled with the outer shell, and a second airflow channel is arranged in the valve body;

the valve seat is arranged between the assembled outer shell and the valve body in a limiting manner, and a first vent hole communicated with the first airflow channel and the second airflow channel is arranged in the valve seat;

the check valve is elastically arranged in the second airflow channel, and one end of the check valve is abutted against the valve seat;

the filter component is arranged in the second upstream air passage and comprises a filter element and an elastic sealing piece which are connected, the filter element is used for filtering gas flowing through the first air flow passage, the elastic sealing piece is arranged between the valve seat and the first stepped surface, and the elastic sealing piece can be in butt joint or interval arrangement with the first stepped surface so as to enable the first upstream air passage and the second upstream air passage to be blocked or conducted.

Optionally, the elastic seal comprises a first spring and a piston, wherein:

one end of the first spring is abutted against the valve seat;

the cross section of piston is T shape, the piston includes grafting portion and sealing portion, grafting portion inserts and locates the other end of first spring, sealing portion's diameter is greater than grafting portion's diameter and the internal diameter of first upstream air flue.

Optionally, the filter element is in a cup-shaped structure, and comprises a first installation part and a second installation part with diameters sequentially increased along the gas conveying direction, a second ventilation hole which is communicated with the first installation part and the second installation part is formed in the filter element, and the second installation part is inserted into the second upstream air passage in a limiting manner;

one end of the first spring is penetrated through the second ventilation hole and then is abutted against the valve seat, and one end of the sealing part connected with the plug-in part is abutted against the first mounting part or the second mounting part.

Optionally, the filter element is formed by sintering powder.

Optionally, the filter assembly further includes a first sealing ring, a first annular groove is formed in the filter element, and the first sealing ring is sleeved in the first annular groove.

Alternatively, the process may be carried out in a single-stage,

the first airflow channel further comprises a third upstream air channel communicated with the second upstream air channel, the inner diameter of the third upstream air channel is larger than that of the second upstream air channel, and one end of the valve seat is abutted against a second step surface formed at the joint of the second upstream air channel and the third upstream air channel;

the valve body comprises a joint part which is inserted into the third upstream air passage in a limiting way and is abutted against the valve seat;

along the gas conveying direction, the second gas flow channel comprises a first downstream gas channel and a second downstream gas channel, the inner diameters of which are sequentially increased, and the one-way valve is arranged in the first downstream gas channel.

Alternatively, the process may be carried out in a single-stage,

the valve body further comprises a second sealing ring;

the connecting part is provided with a second annular groove, and the second sealing ring is sleeved in the second annular groove.

Alternatively, the process may be carried out in a single-stage,

the valve seat further comprises a third sealing ring;

and a third annular groove is formed in the valve seat, and the third sealing ring is sleeved in the third annular groove.

Alternatively, the process may be carried out in a single-stage,

the check valve comprises a valve core and a second spring, the valve core comprises a valve head part and a valve tail part, the valve head part can be abutted to the valve seat, the surface of the valve head part is provided with a third vent hole which can be communicated with the second upstream air passage, the valve tail part is connected with one end of the second spring, the valve tail part is provided with an inner cavity which is communicated with the second downstream air passage, and the other end of the second spring is abutted to the third stepped surface formed by connecting the first downstream air passage and the second downstream air passage.

Optionally, the waterproof sealing device further comprises a waterproof sealing ring, a fourth annular groove is formed in the inner surface of the outer shell, and the waterproof sealing ring is sleeved in the fourth annular groove.

Compared with the prior art, the utility model has the beneficial effects that:

in the integrated hydrogenation device provided by the utility model, the elastic sealing element is elastically arranged between the valve seat and the first stepped surface, hydrogen can be sequentially conveyed into the gas storage bottle through the first gas flow channel and the second gas flow channel, the elastic sealing element is in abutting connection with the first stepped surface in an initial state, and when the pressure of the hydrogen conveyed from the first upstream gas channel to the elastic sealing element is larger than a set elastic value, the elastic sealing element contracts, so that the elastic sealing element and the first stepped surface are arranged at intervals, and the communication between the first upstream gas channel and the second upstream gas channel is realized; when the pressure of the hydrogen to the elastic sealing element is smaller than the set elastic value, the elastic sealing element rebounds, so that the elastic sealing element is in abutting joint with the first stepped surface again, and blocking of the first upstream air passage and the second upstream air passage is completed. Therefore, through the arrangement, when the check valve breaks down and cannot effectively seal the hydrogen flowing back from the gas storage bottle to the device, the elastic sealing piece can play a role in auxiliary sealing, so that the backflow of the hydrogen is effectively blocked, and the safety and reliability of the device on hydrogen sealing are ensured.

Drawings

FIG. 1 is an assembled cross-sectional view of an integrated hydrogenation unit according to the present utility model;

FIG. 2 is a cross-sectional view of an outer housing provided by the present utility model;

FIG. 3 is a cross-sectional view of a valve body provided by the present utility model;

FIG. 4 is a cross-sectional view of a valve seat provided by the present utility model;

FIG. 5 is a cross-sectional view of a one-way valve provided by the present utility model;

fig. 6 is a cross-sectional view of a filter assembly provided by the present utility model.

1. An outer housing; 11. a first airflow passage; 111. a first upstream airway; 112. a second upstream airway; 113. a first step surface; 114. a third upstream airway; 115. a second step surface; 116. a fourth upstream airway; 1161. a fourth annular groove; 117. a fourth step surface; 12. a first end face annular groove;

2. a valve body; 21. a second airflow passage; 211. a first downstream airway; 212. a second downstream airway; 213. a third step surface; 22. a housing portion; 221. a first connection portion; 222. a second connecting portion; 23. a second seal ring; 24. a first retainer ring; 25. a joint connection part; 26. a second end annular groove;

3. a valve seat; 31. a valve seat body; 311. a first vent hole; 312. a third annular groove; 32. a fourth seal ring; 33. a third seal ring; 34. the second check ring;

4. a one-way valve; 41. a valve core; 411. a valve head; 4111. a vent hole; 412. a valve tail; 4121. an inner cavity; 42. a second spring;

5. a filter assembly; 51. a filter element; 511. a first mounting portion; 512. a second mounting portion; 521. a first spring; 522. a piston; 5221. a plug-in part; 5222. a sealing part; 53. a second vent hole; 54. a first seal ring;

6. and (5) a waterproof sealing ring.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices 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 present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to be within the scope of the present utility model.

The utility model provides an integrated hydrogenation device which can be arranged on a pipeline of a hydrogen filling system, and can effectively seal hydrogen after filling, so that safety is ensured.

Referring to fig. 1 to 6, the integrated hydrogenation apparatus provided in this embodiment includes an outer housing 1, a valve body 2, a valve seat 3, a check valve 4, and a filter assembly 5, where a first airflow channel 11 is disposed in the outer housing 1, and along a hydrogen conveying direction (as indicated by an arrow in fig. 1), the first airflow channel 11 includes a first upstream air channel 111 and a second upstream air channel 112 with sequentially increased inner diameters, and a first step surface 113 is formed at a connection position of the first upstream air channel 111 and the second upstream air channel 112; the valve body 2 is assembled with the outer shell 1, and a second airflow channel 21 is arranged in the valve body 2; when the valve body 2 and the outer shell 1 are assembled, the valve seat 3 is clamped between the outer shell 1 and the valve body 2 in a limiting way, and a first vent hole 311 communicated with the first airflow channel 11 and the second airflow channel 21 is arranged in the valve seat 3; the check valve 4 is elastically arranged in the second air flow channel 21, and one end of the check valve 4 is abutted against the valve seat 3, and it can be understood that, with reference to the prior art, the check valve 4 has the function of conducting and blocking the first air flow channel 11 and the second air flow channel 21; the filter assembly 5 is disposed in the second upstream air passage 112, and the filter assembly 5 includes a filter element 51 and an elastic sealing member, where the filter element 51 is used to filter the gas flowing through the first air flow passage 11, the elastic sealing member is disposed between the valve seat 3 and the first stepped surface 113, and the elastic sealing member can be abutted or spaced from the first stepped surface 113, so that the first upstream air passage 111 and the second upstream air passage 112 are blocked or communicated.

It should be clear that, when the integrated hydrogenation apparatus is in operation, hydrogen gas flows into the first gas flow channel 11 of the apparatus from the hydrogenation port, flows from the first gas flow channel 11 to the second gas flow channel 21, and finally flows into the gas storage bottle through the second gas flow channel 21. In the integrated hydrogenation device, due to the arrangement of the elastic sealing element, the elastic sealing element is initially abutted against the first stepped surface 113, when hydrogen starts to be conveyed along the first upstream air passage 111, the hydrogen can push the elastic sealing element to compress, so that the elastic sealing element and the first stepped surface 113 are arranged at intervals, the first upstream air passage 111 and the second upstream air passage 112 are conducted, the hydrogen can enter the second upstream air passage 112, and after passing through the filter element 51, the valve seat 3 and the one-way valve 4 in sequence, the hydrogen enters the second air flow passage 21 formed in the valve body 2, and finally flows out through the second air flow passage 21; when the hydrogen delivery is completed, the elastic seal is then sprung back and can re-abut the first stepped surface 113, thereby blocking the first and second upstream air passages 111, 112. Therefore, when the check valve 4 cannot effectively seal the hydrogen backflow due to the problems of faults, damage and the like, the elastic sealing piece can play a role in auxiliary sealing, so that the backflow of the hydrogen is prevented, and the safety and the reliability of the integrated hydrogenation device on the hydrogen sealing are ensured.

Further, in this embodiment, the shell body 1 is cylindrical structure, and its one end that keeps away from valve body 2 can carry out terminal surface sealing connection with the joint that hydrogenation mouth department set up, through simple dismantlement, changes different joints and just can satisfy the device and be in the different connected mode requirement under the actual conditions with the hydrogenation mouth to avoided the condition of shell body 1 constantly changing, be favorable to reducing manufacturing cost.

Specifically, in order to improve the compactness of the whole device, in the present embodiment, as shown in fig. 1 to 3, the first air flow channel 11 further includes a third upstream air channel 114 communicating with the second upstream air channel 112, the third upstream air channel 114 has an inner diameter larger than that of the second upstream air channel 112, and the opposite end surfaces of the valve seat 3 are both planar. When the valve seat 3 and the valve body 2 are respectively installed, the valve seat 3 is inserted into the third upstream air passage 114 from one end of the outer shell 1, which is close to the valve body 2, and is abutted against a second stepped surface 115 formed at the joint of the second upstream air passage 112 and the third upstream air passage 114, so that the installation of the valve seat 3 is completed; the valve body 2 comprises a connector part 22, and the connector part 22 is inserted into the third upstream air passage 114 in a limiting way and is abutted against the valve seat 3, so that the valve body 2 is mounted; along the conveying direction of the hydrogen gas, the second gas flow path 21 includes a first downstream gas path 211 and a second downstream gas path 212 whose inner diameters are sequentially reduced, and the check valve 4 is provided in the first downstream gas path 211. Like this, whole disk seat 3, partial valve body 2 and whole check valve 4 all set up in shell 1 to can make the connection between each structure in the whole device inseparabler, improve the connection fastness between each structure, and strengthened the wholeness and the installation rationality of the device.

As shown in fig. 1 and 2, in order to further improve the connection stability between the valve body 2 and the outer casing 1 and avoid the gap between the valve body 2 and the outer casing 1 after being installed, the first air flow channel 11 further includes a fourth upstream air channel 116 communicated with the third upstream air channel 114, the inner diameter of the fourth upstream air channel 116 is larger than the inner diameter of the third upstream air channel 114, and an inner thread is provided on the inner side wall of the fourth upstream air channel 116; accordingly, the connector portion 22 in this embodiment includes the first connecting portion 221 and the second connecting portion 222, the diameter of the first connecting portion 221 is smaller than that of the second connecting portion 222, the annular surface of the first connecting portion 221 is smooth, the annular surface of the second connecting portion 222 is provided with external threads, after the first connecting portion 221 passes through the fourth upstream air passage 116 and is limitedly inserted into the third upstream air passage 114, the external threads are in threaded connection with the internal threads, and the second connecting portion 222 can be abutted against the fourth stepped surface 117 formed at the joint of the third upstream air passage 114 and the fourth upstream air passage 116, so that stable and sealed connection between the valve body 2 and the outer housing 1 is completed, and the integrity of the whole device is further improved.

Still further, in order to prevent the hydrogen gas from leaking out from the connection gap between the valve body 2 and the outer housing 1, a second annular groove is formed on the surface of the first connection portion 221, and the valve body 2 further includes a second sealing ring 23, and the second sealing ring 23 is sleeved in the second annular groove to realize radial sealing. Furthermore, a first retainer ring 24 is further sleeved in the second annular groove and is arranged in parallel with the second sealing ring 23, so that the second sealing ring 23 is axially positioned, and the installation stability of the second sealing ring 23 is improved.

Optionally, the valve body 2 further includes a joint connection portion 25, after the valve body 2 is assembled with the outer shell 1, the joint connection portion 25 is exposed to the outside, at this time, the joint connection portion 25 can be in end face sealing connection with a joint arranged at the gas storage bottle, and is similar to the joint arranged at the outer shell 1 and the hydrogenation port, so that the requirements of different connection modes of the device and the gas storage bottle under actual conditions can be met by simply disassembling and replacing different joints, the condition that the valve body 2 is continuously replaced is avoided, and the production and manufacturing costs can be further reduced.

Optionally, referring to fig. 4, the valve seat 3 in this embodiment includes a valve seat 3 body and a fourth sealing ring 32 that are fixedly connected, the valve seat 3 body is provided with the first vent hole 311, the fourth sealing ring 32 is disposed near the check valve 4, the valve seat 3 body is disposed near the filter assembly 5, and when the check valve 4 abuts against the fourth sealing ring 32, the sealing connectivity between the check valve 4 and the valve seat 3 can be significantly improved, so as to ensure the sealing reliability of the hydrogen.

Further, in order to avoid the leakage of hydrogen gas from the connection gap between the valve seat 3 and the outer casing 1, a third annular groove 312 is further formed on the valve seat 3 body in the embodiment, and the valve seat 3 further includes a third sealing ring 33, where the third sealing ring 33 is sleeved in the third annular groove 312, so as to realize radial sealing. Further, a second retainer ring 34 is further sleeved in the third annular groove 312 and is arranged in parallel with the third sealing ring 33, so as to axially position the third sealing ring 33, and improve the installation stability of the third sealing ring 33.

Optionally, as shown in fig. 1 and fig. 2, the integrated hydrogen device further includes a waterproof sealing ring 6, and on the inner surface of the outer casing 1, specifically in this embodiment, a fourth annular groove 1161 is formed on the inner side wall of the fourth upstream air channel 116, and the waterproof sealing ring 6 is sleeved in the fourth annular groove 1161, so that moisture in the external environment can be prevented from invading into a connection gap between the outer casing 1 and the valve body 2, the use safety of the third sealing ring 33 is protected, and external moisture can be prevented from entering into the first air channel 11 and the second air channel 21.

Optionally, referring to fig. 1, in this embodiment, on an end face of a joint where the outer casing 1 is connected to the hydrogenation port, and on an end face of a joint where the valve body 2 is connected to the gas storage bottle, a first end face annular groove 12 and a second end face annular groove 26 are respectively provided, and an end face seal ring is disposed in each end face annular groove, so as to realize radial sealing, and prevent hydrogen from leaking outwards from a joint connection between the outer casing 1 and the corresponding joint, and a joint connection between the valve body 2 and the corresponding joint.

Specifically, in this embodiment, as shown in fig. 5, the check valve 4 includes a valve core 41 and a second spring 42, the valve core 41 includes a valve head 411 and a valve tail 412, the valve head 411 can be abutted against the valve seat 3, the surface of the valve head 411 has a third vent 4111 capable of communicating with the third upstream air passage 114, the valve tail 412 is connected with one end of the second spring 42, an inner cavity 4121 communicating with the second downstream air passage 212 is provided in the valve tail 412, and the other end of the second spring 42 is abutted against a third stepped surface 213 formed at the junction of the first downstream air passage 211 and the second downstream air passage 212. By using the valve core 41 and the second spring 42, the structure of the check valve 4 can be simplified, and the functions of ventilation and gas backflow prevention of the check valve 4 can be ensured; in addition, when the sealing effect of the check valve 4 is weakened, the valve core 41 or the second spring 42 can be replaced individually in a targeted manner, and the whole check valve 4 does not need to be replaced, so that the cost is saved, and the replacement is convenient and quick.

The principle of operation of the one-way valve 4 is, for example: in the initial state, the second spring 42 is in a compressed state, and at this time, the valve core 41 can be abutted against the valve seat 3 under the action of the elastic force of the second spring 42; after the hydrogen output from the hydrogenation port is filtered by the filtering component 5, the hydrogen passes through the first vent hole 311 on the valve seat 3 and impacts the valve core 41; when the pressure value of the hydrogen gas to the valve core 41 is greater than the set elastic value of the second spring 42 to the valve core 41, the valve core 41 can compress the second spring 42 again, so that the valve core 41 and the valve seat 3 can be arranged at intervals, at this time, the hydrogen gas can enter the third upstream air passage 114 from the gap between the valve core 41 and the valve seat 3, enter the inner cavity 4121 of the valve tail 412 through the third air vent 4111 formed in the valve head 411, and then enter the second downstream air passage 212 along the inner cavity 4121, so that the hydrogen gas can enter the gas storage bottle through the second air flow passage 21. When the gas cylinder is about to be filled with hydrogen, the flow of the hydrogen output from the hydrogenation port is gradually reduced, and when the pressure value of the hydrogen to the valve core 41 is smaller than the set elastic value of the second spring 42 to the valve core 41 (when the gas cylinder can be filled with hydrogen basically by default), the second spring 42 rebounds, so that the valve core 41 is abutted against the valve seat 3 again, the valve core 41 can block the first vent hole 311 on the valve seat 3, and further the communication between the first downstream air passage 211 and the third upstream air passage 114 is blocked, and the backflow of the hydrogen is prevented.

When the spring or the valve core 41 in the check valve 4 is damaged and cannot be replaced effectively, the auxiliary sealing can be performed through the elastic sealing element on the filter assembly 5, so that the sealing reliability of the hydrogen is ensured, and in particular, referring to fig. 6, the elastic sealing element comprises a first spring 521 and a piston 522, wherein one end of the first spring 521 is abutted against the valve seat 3; the cross section of the piston 522 is T-shaped, and the piston 522 specifically includes a plug portion 5221 and a seal portion 5222 (a portion of the seal portion 5221 inserted into the first spring 521 is not shown in the drawings), the plug portion 5221 is inserted into the other end of the first spring 521, and the diameter of the seal portion 5222 is larger than the diameter of the plug portion 5221 and the inner diameter of the first upstream air passage 111. The working principle of the elastic sealing piece is as follows: in an initial state, under the action of the first spring 521, the piston 522 can be abutted against the first stepped surface 113, and when the pressure value of the hydrogen in the first upstream air passage 111 to the piston 522 is greater than the set elastic value of the first spring 521 to the filter element 51, the first spring 521 is compressed, so that the piston 522 can be arranged at intervals with the first stepped surface 113, and the first upstream air passage 111 and the second upstream air passage 112 are communicated, so that the hydrogen can be filtered through the filter element 51; when the pressure value of the hydrogen gas to the filter element 51 is smaller than the set elastic force value of the first spring 521 to the filter element 51, the first spring 521 rebounds, so that the piston 522 is abutted against the first stepped surface 113 again, and the piston 522 can block the first upstream air passage 111 again, thereby blocking the communication between the first upstream air passage 111 and the second upstream air passage 112, and further preventing the backflow of the hydrogen gas. Because the elastic sealing element is composed of the first spring 521 and the piston 522, the structure is simple, the assembly is convenient, and the sealing is safe and reliable.

In practical situations, when hydrogen flows through the filter assembly 5, the filter assembly 5 may cause a flow resistance to the hydrogen to some extent, and when the hydrogen flows onto the valve element 41, the flow speed of the hydrogen may be reduced, so that the impact pressure on the valve element 41 may be reduced. Therefore, in practical use, the set elastic force of the first spring 521 on the filter element 51 needs to be greater than the set elastic force of the second spring 42 on the valve element 41, and according to hooke's law f=kx (where F is the elastic force of the spring, k is the elastic coefficient, and x is the deformation amount of the spring), the first spring 521 and the second spring 42 can be changed from the elastic coefficient k and the deformation amount x to satisfy the above requirement. Through the arrangement, the valve core 41 can be smoothly jacked up by the hydrogen filtered by the filtering component 5, and the hydrogen is prevented from being accumulated in the second upstream air passage 112.

Alternatively, in the present embodiment, with continued reference to fig. 6, the filter element 51 is of a cup-shaped structure, which includes a first mounting portion 511 and a second mounting portion 512 having sequentially increasing diameters in the direction of flow of the gas, and a second vent hole 53 communicating the first mounting portion 511 and the second mounting portion 512 is provided in the filter element 51; one end of the first spring 521 is inserted through the second vent hole 53 and then abuts against the valve seat 3, and one end of the sealing portion 5222 connected to the insertion portion 5221 abuts against the first mounting portion 511, thereby completing the assembly and connection of the filter element 51, the piston 522, and the first spring 521. The filter core 51 of cup structure can effectively increase filtration area, improves the purification degree to hydrogen to can also improve the connection compactness with between piston 522 and the first spring 521, just can accomplish filter element 5's quick installation through inserting spacing the inserting of second installation department 512 in second upstream air flue 112, effectively reduce whole filter element 5's area occupied, still guaranteed simultaneously that this filter element 5 can not take place the loose condition of part in the course of the work. Of course, in some parallel embodiments, the end of the sealing portion 5222 connected to the plug portion 5221 may abut against the first mounting portion 511, so the specific mounting manner of the piston 522 and the filter element 51 is not limited in the present utility model.

Preferably, the filter element 51 is manufactured by adopting a powder sintering molding process, so that the pressure bearing capacity of the filter element 51 can be enhanced, and the service life of the filter element 51 can be prolonged.

Further, in order to prevent the unfiltered hydrogen from leaking into the second gas flow channel 21 from the connection gap between the filter element 51 and the second upstream gas channel 112, in this embodiment, the filter assembly 5 further includes a first sealing ring 54, and a first annular groove is formed on the first mounting portion 511 of the filter element 51, and the first sealing ring 54 is sleeved in the first annular groove, so as to seal the unfiltered hydrogen.

It should be noted that, the first sealing ring 54, the second sealing ring 23, the third sealing ring 33, the waterproof sealing ring 6 and the two end face sealing rings are all O-shaped sealing rings, so that the connection and the installation are more convenient and reliable, and the material selection is more convenient.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. An integrated hydrogenation unit, comprising:

the gas flow device comprises an outer shell (1), wherein a first gas flow channel (11) is arranged in the outer shell, the first gas flow channel (11) comprises a first upstream gas channel (111) and a second upstream gas channel (112) with inner diameters sequentially increased along the gas conveying direction, and a first step surface (113) is formed at the joint of the first upstream gas channel (111) and the second upstream gas channel (112);

the valve body (2) is assembled with the outer shell (1), and a second airflow channel (21) is arranged in the valve body (2);

the valve seat (3) is clamped between the assembled outer shell (1) and the valve body (2), and a first vent hole (311) communicated with the first air flow channel (11) and the second air flow channel (21) is arranged in the valve seat (3);

a one-way valve (4) which is elastically arranged in the second airflow channel (21), wherein one end of the one-way valve (4) is abutted against the valve seat (3);

the filter component (5) is arranged in the second upstream air passage (112), the filter component (5) comprises a filter element (51) and an elastic sealing element which are connected, the filter element (51) is used for filtering gas flowing through the first air passage (11), the elastic sealing element is arranged between the valve seat (3) and the first stepped surface (113), and the elastic sealing element can be in butt joint or interval arrangement with the first stepped surface (113) so as to enable the first upstream air passage (111) and the second upstream air passage (112) to be blocked or conducted.

2. The integrated hydrogenation unit according to claim 1, wherein the elastic seal comprises a first spring (521) and a piston (522), wherein:

one end of the first spring (521) is abutted against the valve seat (3);

the cross section of piston (522) is T-shaped, piston (522) are including grafting portion (5221) and sealing portion (5222), grafting portion (5221) inserts and locates the other end of first spring (521), sealing portion (5222) diameter is greater than the diameter of grafting portion (5221) and the internal diameter of first upstream air flue (111).

3. The integrated hydrogenation unit according to claim 2, wherein the filter element (51) has a cup-shaped structure, and comprises a first mounting portion (511) and a second mounting portion (512) with sequentially increased diameters along the gas conveying direction, a second ventilation hole (53) communicating the first mounting portion (511) and the second mounting portion (512) is formed in the filter element (51), and the second mounting portion (512) is inserted into the second upstream air passage (112) in a limited manner;

one end of the first spring (521) is inserted into the second ventilation hole (53) and then abuts against the valve seat (3), and one end of the sealing part (5222) connected with the plug part (5221) abuts against the first mounting part (511) or the second mounting part (512).

4. The integrated hydrogenation unit according to claim 1, wherein said filter element (51) is sintered from powder.

5. The integrated hydrogenation unit according to claim 1, wherein the filter assembly (5) further comprises a first sealing ring (54), a first annular groove is formed in the filter element (51), and the first sealing ring (54) is sleeved in the first annular groove.

6. The integrated hydrogenation unit according to claim 1, wherein,

the first air flow channel (11) further comprises a third upstream air channel (114) communicated with the second upstream air channel (112), the inner diameter of the third upstream air channel (114) is larger than that of the second upstream air channel (112), and one end of the valve seat (3) is abutted against a second step surface (115) formed at the joint of the second upstream air channel (112) and the third upstream air channel (114);

the valve body (2) comprises a joint part (22), and the joint part (22) is inserted into the third upstream air passage (114) in a limiting way and is abutted against the valve seat (3);

along the gas conveying direction, the second gas flow channel (21) comprises a first downstream gas channel (211) and a second downstream gas channel (212) with sequentially increased inner diameters, and the one-way valve (4) is arranged in the first downstream gas channel (211).

7. The integrated hydrogenation unit according to claim 6, wherein,

the valve body (2) further comprises a second sealing ring (23);

the connecting part (22) is provided with a second annular groove, and the second sealing ring (23) is sleeved in the second annular groove.

8. The integrated hydrogenation unit according to claim 6, wherein,

the valve seat (3) further comprises a third sealing ring (33);

and a third annular groove (312) is formed in the valve seat (3), and the third sealing ring (33) is sleeved in the third annular groove (312).

9. The integrated hydrogenation unit according to claim 6, wherein,

the one-way valve (4) comprises a valve core (41) and a second spring (42), the valve core (41) comprises a valve head part (411) and a valve tail part (412), the valve head part (411) is used for being abutted against the valve seat (3), a third vent (4111) which can be communicated with the second upstream air passage (112) is formed on the surface of the valve head part (411), the valve tail part (412) is connected with one end of the second spring (42), the valve tail part (412) is provided with an inner cavity (4121) which is communicated with the second downstream air passage (212), and the other end of the second spring (42) is abutted against a third step surface (213) formed by connecting the first downstream air passage (211) with the second downstream air passage (212).

10. The integrated hydrogenation unit according to claim 1, further comprising a waterproof sealing ring (6), wherein a fourth annular groove (1161) is formed in the inner surface of the outer casing (1), and the waterproof sealing ring (6) is sleeved in the fourth annular groove (1161).