CN219014005U

CN219014005U - Hydrogen bottleneck valve

Info

Publication number: CN219014005U
Application number: CN202223296363.3U
Authority: CN
Inventors: 王英民; 孙志华; 董文平
Original assignee: Weifang Zhongcheng Automation Equipment Co ltd
Current assignee: Weifang Zhongcheng Automation Equipment Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-12
Anticipated expiration: 2032-12-09

Abstract

The utility model belongs to the technical field of bottleneck valves, in particular to a hydrogen bottleneck valve which comprises a main body of the bottleneck valve and a hydrogen cylinder, wherein the bottom of the main body of the bottleneck valve is communicated with an air inlet pipe which is in threaded connection with the hydrogen cylinder, one side of the main body of the bottleneck valve is communicated with an air outlet pipe, and the outside of the air inlet pipe is sleeved with a sealing component; the sealing component comprises a fixed sleeve, the inner top wall of the fixed sleeve is provided with a circular groove, the inner top wall of the circular groove is provided with a plurality of limiting springs, and the bottoms of the limiting springs are fixedly connected with a connecting circular ring. According to the utility model, after the air inlet pipe of the port valve main body is in threaded connection with the bottle mouth of the hydrogen bottle, the circular ring is tightly pressed with the edge of the bottle mouth, and the circular ring is tightly attached to the edge of the bottle mouth under the action of the limiting spring, so that the sealing ring after the port valve is connected with the hydrogen bottle is lifted, and the occurrence of air leakage is effectively avoided.

Description

Hydrogen bottleneck valve

Technical Field

The utility model belongs to the technical field of bottleneck valves, and particularly relates to a hydrogen bottleneck valve.

Background

Hydrogen is widely used as green fuel energy, is gaseous at normal temperature because of its density bottom, inconvenient transportation, makes hydrogen liquefaction load into hydrogen bottle through the pressurization and carries out transportation and use, and after the filling is accomplished, can install the bottleneck valve in hydrogen bottleneck department and be used for gassing and aerifing the use to hydrogen.

As shown in fig. 1, the existing hydrogen bottle mouth valve is generally connected with a hydrogen bottle mouth in a threaded connection manner, and after long-time use, the sealing performance is not very good, and the problem of air leakage exists after connection.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the hydrogen bottleneck valve with good sealing performance and gas leakage prevention.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the hydrogen bottleneck valve comprises a main body, wherein a valve rod is connected with the main body in a threaded manner, a knob is arranged at the top end of the valve rod, a valve core is arranged at the bottom end of the valve rod, an air inlet pipe is communicated with the bottom of the main body, an exhaust pipe is communicated with one side of the main body, the middle lower part of the air inlet pipe is connected with a hydrogen cylinder in a threaded manner, and a sealing assembly is sleeved on the outer wall of the upper part of the air inlet pipe; the sealing assembly comprises a fixed sleeve, the fixed sleeve is fixedly connected with the bottom of the valve body, the air inlet pipe penetrates through the fixed sleeve and extends to the lower portion of the fixed sleeve, a circular groove is formed in the inner top wall of the fixed sleeve, a plurality of limit springs are fixedly connected to the inner top wall of the circular groove at equal intervals, and a plurality of connecting circular rings are fixedly connected to the bottoms of the limit springs.

As an improvement, the side section of the connecting ring is in a shape with the middle recessed downwards, and the connecting ring is in sliding connection with the inner surface of the ring groove.

As an improvement, the inside of ring groove is connected with sealed the pad through clearance fit, connect the ring with be equipped with two ring empty slots between the sealed pad, two be equipped with the sealing washer in the ring empty slot respectively.

Preferably, the cross-section of the gasket is a 132 and the cross-section of the sealing ring is circular.

As an improvement, the gap between the air inlet pipe and the fixing sleeve is larger than the thickness of the side wall of the bottle mouth of the hydrogen bottle.

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

the sealing assembly comprises a fixed sleeve, the top of the inner wall of the fixed sleeve is provided with the circular groove, the top of the inner wall of the circular groove is fixedly connected with a plurality of limit springs at equal distance, after an air inlet pipe of the mouth valve main body is in threaded connection with the bottle mouth of the hydrogen bottle, the edge of the circular ring is tightly pressed against the bottle mouth, and the edge of the circular ring is tightly attached to the bottle mouth through the effect of the limit springs, so that a sealing ring after the mouth valve is connected with the hydrogen bottle is improved, the occurrence of air leakage is effectively avoided, the sealing gasket and the sealing ring can further improve the air tightness after the mouth valve main body is connected with the hydrogen bottle, and the sealing gasket and the sealing ring can be detached, so that the mouth valve can be replaced after long-time use, and the use safety of the mouth valve is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art hydrogen bottle neck valve and hydrogen cylinder connection;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is an enlarged cross-sectional view of the seal assembly of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic diagram of the connection of the hydrogen bottle neck valve and the hydrogen cylinder of the present utility model;

in the figure: 1. a port valve body; 2. a hydrogen cylinder; 3. an air inlet pipe; 4. a seal assembly; 41. a fixed sleeve; 42. circular ring grooves; 43. a limit spring; 44. connecting the circular rings; 45. a sealing gasket; 46. a seal ring; 5. an exhaust pipe; 6. a control channel; 7. a valve stem; 8. a knob; 9. and a valve core.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The hydrogen bottleneck valve provides two technical schemes:

a first embodiment is shown in fig. 2-5: the utility model provides a hydrogen bottleneck valve, including mouth valve body 1, be equipped with control channel 6 in the mouth valve body 1, control channel 6 female connection has valve rod 7, the top of valve rod 7 is equipped with knob 8, the bottom of valve rod 7 is equipped with case 9, the bottom intercommunication of mouth valve body 1 has intake pipe 3, the case is located intake pipe 3, the right side intercommunication of mouth valve body 1 has blast pipe 5, the well lower part surface of intake pipe 3 is provided with the external screw thread, the bottleneck inner wall of hydrogen cylinder 2 is equipped with the internal screw thread, intake pipe 3 passes through the external screw thread on surface and the internal screw thread connection of hydrogen cylinder 2 bottleneck inner wall.

The outside of intake pipe 3 is provided with seal assembly 4, seal assembly 4 includes fixed cover 41, circular groove 42 is seted up to the roof in fixed cover 41, a plurality of spacing springs 43 of equidistance fixedly connected with in top of circular groove 42 inner wall, the bottom of a plurality of spacing springs 43 all with same connection ring 44 fixed connection, the side cross-section of connection ring 44 is middle undercut's shape, the internal surface sliding connection of connection ring 44 and circular groove 42, fixed cover 41 and the bottom fixed connection of mouth valve main part 1, intake pipe 3 runs through fixed cover 41 and extends to the below of fixed cover 41, the space between intake pipe 3 and the fixed cover 41 is slightly greater than the thickness of hydrogen cylinder 2 bottleneck inner wall.

The second embodiment is shown in fig. 3 and 4, and differs from the first embodiment mainly in that: the inside of ring groove 42 is connected with sealed pad 45 through clearance fit, connects ring 44 and sealed pad 45 to have two ring empty slots, and the cross-section of sealed pad 45 is for the one, and this design can further seal the clearance that probably remains between hydrogen cylinder and fixed cover 41, further improves the gas tightness of junction, has placed sealing washer 46 in the ring empty slot between ring 44 and the sealed pad 45, and the cross-section of sealing washer 46 is circular.

The sealing gasket 45 and the sealing ring 46 can be detached, so that the sealing gasket can be replaced after long-term use, and the use safety of the mouth valve is improved.

After the air inlet pipe 3 of the port valve main body 1 is in threaded connection with the bottleneck of the hydrogen cylinder 2, the sealing gasket 45 is tightly pressed with the edge of the bottleneck, and the sealing gasket 45 is tightly attached to the edge of the bottleneck through the limiting spring 43, so that the tightness of the port valve after being connected with the hydrogen cylinder 2 is improved, and the occurrence of air leakage is effectively avoided.

After the use, be connected mouthful valve body 1 and hydrogen cylinder 2 through the external screw thread on intake pipe 3 surface and the internal screw thread of hydrogen cylinder 2 bottleneck, rotate mouthful valve body 1 and make intake pipe 3 enter into the inside of hydrogen cylinder 2 bottleneck, along with mouthful valve body 1's downmovement, the bottleneck of hydrogen cylinder 2 enters into the space between fixed cover 41 and the intake pipe 3, then the top of hydrogen cylinder 2 bottleneck and the bottom contact of sealing gasket 45, mouthful valve body 1 continues downmovement and makes sealing gasket 45 enter into the inside of ring groove 42, sealing gasket 45 removes the promotion and connects ring 44 and remove, connect ring 44 removes and compress spacing spring 43 and take place the deformation, thereby make sealing gasket 45 and the inseparabler of the top laminating of hydrogen cylinder 2 bottleneck through spacing spring 43's reaction force.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydrogen bottleneck valve, includes the mouth valve main part, the female connection of mouth valve main part has the valve rod, the top of valve rod is equipped with the knob, the bottom of valve rod is equipped with the case, the bottom intercommunication of mouth valve main part has the intake pipe, one side intercommunication of mouth valve main part has blast pipe, its characterized in that: the middle lower part of the air inlet pipe is in threaded connection with the hydrogen cylinder, and the outer wall of the upper part of the air inlet pipe is sleeved with a sealing component; the sealing assembly comprises a fixed sleeve, the fixed sleeve is fixedly connected with the bottom of the valve body, the air inlet pipe penetrates through the fixed sleeve and extends to the lower portion of the fixed sleeve, a circular groove is formed in the inner top wall of the fixed sleeve, a plurality of limit springs are fixedly connected to the inner top wall of the circular groove at equal intervals, and a plurality of connecting circular rings are fixedly connected to the bottoms of the limit springs.

2. The hydrogen neck finish valve according to claim 1, wherein: the side section of the connecting ring is in a shape with the middle recessed downwards, and the connecting ring is in sliding connection with the inner surface of the ring groove.

3. The hydrogen neck finish valve according to claim 1, wherein: the inside of ring groove is connected with sealed the pad through clearance fit, connect the ring with be equipped with two ring empty slots between the sealed pad, two be equipped with the sealing washer in the ring empty slot respectively.

4. A hydrogen neck finish valve according to claim 3, wherein: the cross-section of the gasket is 132 and the cross-section of the sealing ring is circular.

5. The hydrogen neck finish valve according to claim 1, wherein: the gap between the air inlet pipe and the fixed sleeve is larger than the thickness of the side wall of the bottle mouth of the hydrogen bottle.