CN211398619U - Stop valve for hydrogen - Google Patents
Stop valve for hydrogen Download PDFInfo
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- CN211398619U CN211398619U CN201921597857.0U CN201921597857U CN211398619U CN 211398619 U CN211398619 U CN 211398619U CN 201921597857 U CN201921597857 U CN 201921597857U CN 211398619 U CN211398619 U CN 211398619U
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Abstract
The utility model discloses a stop valve for hydrogen, which comprises a valve body; the outer wall of the lower end of the valve rod is in contact with the inner wall of the valve body in a fitting manner; the stop piece is attached to the valve body part; the inner wall of the sealing element is in fit sealing with the outer wall of the valve rod, and the outer wall of the sealing element is in fit sealing with the inner wall of the valve body; the fixing piece is arranged above the sealing piece and the valve body and fixedly connected with the valve body. The sealing element is arranged between the valve body and the valve rod, so that the medium flowing through the valve body is sealed in the valve body, and the medium is prevented from leaking out from a gap between the valve body and the valve rod; the sealing element is fixed between the valve body and the valve rod by arranging the fixing element, so that the sealing element is prevented from moving relative to the valve rod or the valve body due to vehicle condition vibration, and the medium is prevented from leaking; the fixing piece fixes the relative position of the valve rod and the valve body, and avoids medium leakage caused by improper fit of the valve rod, the valve body and the sealing element.
Description
Technical Field
The utility model relates to a hydrogen equipment field, in particular to stop valve for hydrogen.
Background
The hydrogen energy is regarded as an important secondary energy in the twenty-first century, has the advantages of rich resources, high combustion value, cleanness, renewability and the like, and along with the rapid development of fuel cell and battery automobile technologies, a safe and efficient hydrogen control technology becomes the key of hydrogen energy application. As a kind of forced sealing type valve, a cut-off valve is also used in a large amount in the field of hydrogen gas as a switch of a distribution pipeline, and thus the cut-off valve is an extremely important component in a hydrogen supply system.
At present, a stop valve specially designed for hydrogen is not developed, the stop valve and hydrogen medium in the prior art are not reliable in sealing, and the stop valve is applied to hydrogen storage equipment on a fuel cell vehicle, so that the vehicle-mounted stop valve is easy to vibrate under the influence of vehicle conditions in the working process, the sealing performance of the stop valve is reduced, the hydrogen is stopped and leaked, and explosion accidents are easily caused. Therefore, the development of a stop valve with good sealing performance specially used for hydrogen is a technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stop valve for hydrogen to solve the poor technical problem who easily leaks of stop valve sealing performance among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a stop valve for hydrogen comprises a valve body; the valve rod is arranged in the middle of the valve body, and the outer wall of the lower end of the valve rod is in contact with the inner wall of the valve body in a fitting manner; the stopping piece is connected with the lower end of the valve rod, the stopping piece is attached to the valve body part, and the stopping piece is used for stopping a medium; the sealing element is arranged in the middle of the valve rod and at the upper end of the valve body, the inner wall of the sealing element is in fit sealing with the outer wall of the valve rod, and the outer wall of the sealing element is in fit sealing with the inner wall of the valve body; the fixing piece, the fixing piece set up in the sealing member the valve body top, the valve rod passes perpendicularly the fixing piece middle part, the fixing piece with valve body fixed connection.
In the above embodiment, the present invention realizes the cut-off of the medium by the cut-off member, and controls the switch of the cut-off member by the valve rod, thereby realizing the cut-off or circulation of the medium; the sealing element is arranged between the valve body and the valve rod, so that the medium flowing through the valve body is sealed in the valve body, and the medium is prevented from leaking out of a gap between the valve body and the valve rod; the sealing element is fixed between the valve body and the valve rod by arranging the fixing element, so that the sealing element is prevented from moving relative to the valve rod or the valve body due to vehicle condition vibration, and a medium is prevented from leaking; meanwhile, the fixing piece fixes the relative position of the valve rod and the valve body, and medium leakage caused by improper fit of the valve rod, the valve body and the sealing element is avoided.
Preferably, the shut-off member comprises: the sealing gasket is fixedly connected with the lower end of the valve rod; the valve seat is arranged below the sealing gasket and connected with the valve body, and the sealing body and the valve seat form a sealing surface during contact and attachment. The utility model discloses in sealed pad with valve rod lower extreme fixed connection realizes passing through valve rod control sealed pad's removal works as sealed pad is in under the control of valve rod with during the disk seat contact, sealed pad with the disk seat forms sealed face in laminating department to make the medium unable to pass through cut off the piece, thereby realize ending to the medium.
Preferably, the fixing member includes: the compression nut is arranged above the sealing element, the inner wall of the lower end of the compression nut is fixedly connected with the outer wall of the valve body, and the compression nut is used for fixing the relative positions of the valve body and the valve rod and fixing the sealing element between the valve body and the valve rod; and the clamping nut is arranged at the lower end of the clamping nut, the inner wall of the clamping nut is connected with the outer wall of the valve body, and the clamping nut is used for clamping the clamping nut. The utility model discloses a set up gland nut with and gland nut, will the valve rod the sealing member is fixed in corresponding the position, when avoiding the vehicle condition vibration the valve rod the sealing member changes because of the vibration relative position to guarantee the leakproofness of stop valve. After the compression nut and the tightening nut are screwed, the friction force between nut teeth and bolt teeth is increased by the axial force generated between the nuts, so that the nuts are prevented from being automatically loosened, the stable fixing performance of the fixing piece and the valve body is enhanced, and the relative positions of the valve rod and the sealing piece are ensured to be stable.
Preferably, the seal comprises: the elastic piece is arranged on the outer side of the valve rod, and the upper end of the elastic piece is connected with the fixing piece in a matching way; the first sealing part is arranged below the elastic part, the inner wall of the first sealing part is in fit sealing with the outer wall of the valve rod, and the outer wall of the first sealing part is in fit sealing with the valve body; and the second sealing part is arranged under the first sealing part, and the lower end of the second sealing part is connected with the convex block on the inner wall of the middle part of the valve body in a matched manner. The lower end of the elastic piece is connected with the first sealing part, the first sealing part is connected with the second sealing part, the elastic force generated by the elastic piece is used for enhancing the sealing force on the first sealing part and the second sealing part, and the lower end of the second sealing part is always closely attached to the valve body; the upper end of the elastic piece is matched and connected with the fixing piece, and the sealing piece forms soft sealing on the valve body to enhance the sealing property of the valve body; the elastic piece can be compressed or rebounded and is suitable for a vibrating vehicle condition, when the first sealing part and the second sealing part are stressed and changed due to vehicle condition vibration, the elastic piece can quickly respond, and generates corresponding compensation force for the first sealing part and the second sealing part, so that the position of the sealing piece is always kept fixed, and the sealing performance of the sealing piece is guaranteed.
More preferably, the first sealing portion includes: the pressing sleeve is arranged between the valve rod and the valve body and below the elastic piece; the first sealing ring is arranged at the joint of the pressing sleeve and the valve rod; and the second sealing ring is arranged at the joint of the pressing sleeve and the valve body. The utility model discloses press the cover with valve rod laminating department sets up first sealing washer press the cover with valve body laminating department sets up the second sealing washer realizes first sealing the valve body with the sealing of valve rod. The utility model discloses a set up press the cover, press the cover upper end with the elastic component is connected, the elastic component is right press the elasticity that the cover was applyed to make press the cover will the second sealing compresses tightly, strengthens the leakproofness of second sealing.
More preferably, the second sealing portion includes: the packing group is arranged right below the first sealing part, the inner wall of the packing group is attached to the outer wall of the valve rod, and the outer wall of the packing group is attached to the inner wall of the valve body; the gasket is arranged below the whole packing set, and the lower part of the gasket is matched and connected with the convex block on the inner wall of the middle part of the valve body. The utility model discloses a set up the packing group, seal the medium, through setting up the packing ring, increase the area of contact of packing group bottom, the packing group lower extreme has stable support, packing group upper end with first sealing is connected, first sealing with the elastic component is connected, the elasticity of elastic component passes through first sealing transmits on the packing group, thereby the reinforcing the sealing performance of packing group.
More preferably, the filler group is a polymeric material.
Preferably, a handle is arranged at the upper end of the valve rod, a screw is arranged on the handle, and the handle is connected with the valve rod through the screw.
Preferably, the valve body lower extreme is equipped with the screw hole, the position deviation central line in screw hole place.
Has the advantages that:
the utility model discloses a set up the mounting, fix the sealing member between valve body and valve rod, fixed the relative position of valve rod and valve body, avoid valve rod, valve body, sealing member to change relative position when the vehicle condition vibrates, make to produce the space between sealing member and valve rod, the valve body and lead to the medium to leak. The utility model discloses the mounting includes gland nut and lock nut, and gland nut is fixed with sealing member, valve rod, valve body to lock nut is fixed, makes the mounting still remain stable fixed under the vibrating vehicle condition, guarantees the leakproofness of stop valve.
The utility model discloses a set up the sealing member, the sealing member includes the elastic component, makes the sealing member to valve body, valve rod soft seal, improves the leakproofness. The first sealing part of the utility model seals the valve body and the valve rod from the inner side and the outer side respectively; the second sealing part of the utility model comprises a packing group and a gasket, and the gasket increases the supporting area of the bottom of the packing group; when the vehicle condition vibrates, the internal stress of the sealing element changes, the elastic force of the elastic element changes, corresponding elastic force is generated on the first sealing portion, the elastic force is transmitted to the second sealing portion, the positions of the packing group and the first sealing portion are always kept unchanged under the support of the gasket, the first sealing portion, the packing group, the valve rod and the valve body are always kept in tight fit sealing, and the effective sealing of the sealing element on the valve body and the valve rod is realized.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic sectional structure view of the stop valve for hydrogen of the present invention.
In the attached drawings
1. Handle 2, valve rod 3, gland nut
4. Pressing sleeve 5, first sealing ring 6 and second sealing ring
7. Packing group 8, washer 9 and fastening nut
10. Valve body 11, cutting ferrule nut 12, first cutting ferrule
13. Second ferrule 14, screw 15, elastic member
16. Sealing gasket
Detailed Description
In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the present invention and are not to be considered as limiting, and that all other embodiments can be made by one of ordinary skill in the art without any inventive work.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
As shown in fig. 1, a shutoff valve for hydrogen gas includes a valve body 10; the valve rod 2 is arranged in the middle of the valve body 10, and the outer wall of the lower end of the valve rod 2 is in contact with the inner wall of the valve body 10 in a fitting manner; the stopping piece is connected with the lower end of the valve rod 2, is partially attached to the valve body 10 and is used for stopping a medium; the sealing element is arranged in the middle of the valve rod 2 and at the upper end of the valve body 10, the inner wall of the sealing element is in fit sealing with the outer wall of the valve rod 2, and the outer wall of the sealing element is in fit sealing with the inner wall of the valve body 10; the mounting, the mounting sets up in sealing member, valve body 10 top, and the valve rod 2 passes the mounting middle part perpendicularly, mounting and valve body 10 fixed connection. The utility model realizes the cut-off of the medium by the cut-off piece, and controls the switch of the cut-off piece by the valve rod 2, thereby realizing the cut-off or circulation of the medium; the utility model seals the medium flowing through the valve body 10 inside the valve body 10 by arranging the sealing element between the valve body 10 and the valve rod 2, and avoids the medium from leaking out from the gap between the valve body 10 and the valve rod 2; the utility model fixes the sealing element between the valve body 10 and the valve rod 2 by arranging the fixing element, thereby avoiding the relative movement of the sealing element and the valve rod 2 or the valve body 10 caused by the vibration of the vehicle condition, and preventing the medium from leaking; meanwhile, the fixing piece fixes the relative positions of the valve rod 2 and the valve body 10, and medium leakage caused by improper fit of the valve rod 2, the valve body 10 and a sealing element is avoided.
As shown in fig. 1, the shut-off member includes: the sealing gasket 16 is fixedly connected with the lower end of the valve rod 2; and the valve seat is arranged below the sealing gasket 16 and connected with the valve body 10, and a sealing surface is formed when the sealing body is in contact joint with the valve seat. The utility model discloses the sealed 16 and the 2 lower extreme fixed connection of valve rod of well sealed pad realizes the removal through the sealed 16 of valve rod 2 control pad, when sealed pad 16 under the control of valve rod 2 with the disk seat contact, sealed pad 16 and disk seat form sealed face in laminating department to make the medium can't pass through the cutting piece, thereby realize ending to the medium.
As shown in fig. 1, the fixing member includes: the compression nut 3 is arranged above the sealing element, the inner wall of the lower end of the compression nut 3 is fixedly connected with the outer wall of the valve body 10, and the compression nut 3 is used for fixing the relative positions of the valve body 10 and the valve rod 2 and fixing the sealing element between the valve body 10 and the valve rod 2; and lock nut 9, and lock nut 9 sets up in lock nut 3 lower extreme, and lock nut 9 inner wall and the connection of valve body 10 outer wall, and lock nut 9 is used for and sticiss lock nut 3. The utility model discloses a set up gland nut 3 and lock nut 9, fix valve rod 2, sealing member in corresponding the position, valve rod 2, sealing member change because of the vibration relative position when avoiding the vehicle condition vibration to guarantee the leakproofness of stop valve. After the compression nut 3 and the clamping nut 9 are screwed, the friction force between nut teeth and bolt teeth is increased by the axial force generated between the nuts, so that the nuts are prevented from being automatically loosened, the stable fixing performance of the fixing piece and the valve body 10 is enhanced, and the relative positions of the valve rod 2 and the sealing piece are ensured to be stable.
As shown in fig. 1, the sealing member includes: the elastic piece 15, the elastic piece 15 is set up in the outside of valve stem 2, the upper end of the elastic piece 15 cooperates with gland nut 3 to connect; the first sealing part is arranged below the elastic piece 15, the inner wall of the first sealing part is in fit sealing with the outer wall of the valve rod 2, and the outer wall of the first sealing part is in fit sealing with the valve body 10; and the lower end of the second sealing part is connected with a convex block on the inner wall of the middle part of the valve body 10 in a matched manner. The utility model is provided with the lower end of the elastic piece 15 connected with the first sealing part and the first sealing part connected with the second sealing part, the elastic force generated by the elastic piece 15 is used for enhancing the sealing force to the first sealing part and the second sealing part, and the lower end of the second sealing part is always closely attached with the valve body 10; the upper end of the elastic piece 15 is matched and connected with the compression nut 3, and the sealing piece forms soft sealing on the valve body 10 to enhance the sealing property of the valve body 10; the elastic member 15 can be compressed or rebounded, and is suitable for a vibrating vehicle condition, when the first sealing portion and the second sealing portion are stressed and changed due to vehicle condition vibration, the elastic member 15 can quickly respond, and generate corresponding compensation force for the first sealing portion and the sealing portion, so that the position of the sealing member is always kept fixed, and the sealing performance of the sealing member is ensured.
In this embodiment, elastic component 15 is the dish spring, the utility model discloses stop valve inner space is limited, and the displacement that takes place when valve rod 2 is opened and close is less, so elastic component 15 deformation stroke in the stop valve is very limited, the utility model discloses select the dish spring that the stroke is short for use, although the dish spring stroke is short, nevertheless the load is big, can compress tightly first sealing, second sealing at the assigned position. Meanwhile, the size and the number of the disc springs can be selected according to the size of the valve and the pressure of the medium, so that different requirements can be met.
As shown in fig. 1, the first sealing portion includes: the pressing sleeve 4 is arranged between the valve rod 2 and the valve body 10 and below the elastic piece 15; the first sealing ring 5 is arranged at the joint of the pressing sleeve 4 and the valve rod 2; and the second sealing ring 6 is arranged at the joint of the pressing sleeve 4 and the valve body 10. The utility model discloses set up first sealing washer 5, set up second sealing washer 6 pressing cover 4 and valve body 10 laminating department, realize the sealed of first sealing valve body 10 and valve rod 2 pressing cover 4 and valve rod 2 laminating department. The utility model discloses a set up and press cover 4, press 4 upper ends of cover and elastic component 15 to be connected, elastic component 15 makes to press cover 4 to compress tightly the second sealing to the elasticity that presses 4 applys of cover, strengthens the leakproofness of second sealing.
As shown in fig. 1, the second sealing portion includes: the packing set 7 is arranged right below the pressing sleeve 4, the inner wall of the packing set 7 is attached to the outer wall of the valve rod 2, and the outer wall of the packing set 7 is attached to the inner wall of the valve body 10; and the gasket 8 is arranged below the packing group 7, and the lower part of the gasket 8 is matched and connected with a convex block on the inner wall of the middle part of the valve body 10. The utility model discloses a set up packing group 7, seal the medium, through setting up packing ring 8, increase the area of contact of 7 bottoms of packing group, 7 lower extremes of packing group have stable support, and 7 upper ends of packing group are connected with pressure cover 4, and first sealing and elastic component 15 are connected, and elastic component 15's elasticity is through pressing on cover 4 transmits packing group 7 to strengthen packing group 7's sealing performance.
The filler group 7 is made of high polymer material. In this embodiment, the packing group 7 and the sealing pad 16 are both made of fluorine material, specifically polytetrafluoroethylene; polytetrafluoroethylene has good high temperature resistance, corrosion resistance, weatherability, polytetrafluoroethylene's coefficient of friction is extremely low simultaneously, when the stop valve is opened and close, need control sealed 16 and the laminating and the separation of disk seat through valve rod 2, valve rod 2 and packing group 7, sealed 16 and disk seat inevitably can take place relative movement, because sealed 16 and packing group 7 all adopt polytetrafluoroethylene macromolecular material, coefficient of friction is low, when standing in opening and close of stop valve, it is little to sealed 16 and the wearing and tearing of packing group 7, make sealed 16 and disk seat, packing group 7 and valve rod 2 keep furthest's laminating, thereby guarantee the leakproofness of stop valve. When the vehicle condition vibrates, the absolute relative stillness between the sealing gasket 16 and the valve seat and between the packing group 7 and the valve rod 2 cannot be kept, and slight relative movement is inevitable, at the moment, because the joint degree between the sealing gasket 16 and the valve seat and between the packing group 7 and the valve rod 2 is always high, the sealing gasket 16 and the valve seat, and between the packing group 7 and the valve rod 2 can always keep sealing. And at high pressure, the packing group 7 and the sealing gasket 16 are made of high molecular material polyimide.
As shown in fig. 1, valve rod 2 upper end is equipped with handle 1, is equipped with screw 14 on the handle 1, and handle 1 passes through screw 14 and valve rod 2 and connects, and concrete screw 14 is hexagonal socket head cap holding screw 14, through the rotatable valve rod 2 of turning handle 1 to make valve rod 2 drive sealed 16 of filling up and reciprocate, realize sealed laminating and the separation of 16 and the disk seat of filling up, thereby realize opening and close of stop valve. The lower extreme of valve body 10 is equipped with the screw hole, and the position deviation central line at screw hole place, screw hole are used for installing the stop valve. The left end of the valve body 10 is provided with a clamping sleeve set which comprises a clamping sleeve nut 11, a first clamping sleeve 12 and a second clamping sleeve 13, and the connecting mode of the clamping sleeve set can be changed according to requirements.
Although the invention has been described with respect to illustrative embodiments thereof so that those skilled in the art can understand the invention, it is to be understood that the invention is not limited to the disclosed embodiments, but rather, is intended to cover all modifications and variations within the spirit and scope of the invention as defined and defined by the appended claims. The utility model is protected.
Claims (9)
1. A stop valve for hydrogen, which comprises
A valve body;
the valve rod is arranged in the middle of the valve body, and the outer wall of the lower end of the valve rod is in contact with the inner wall of the valve body in a fitting manner;
the stopping piece is connected with the lower end of the valve rod, the stopping piece is attached to the valve body part, and the stopping piece is used for stopping a medium;
the sealing element is arranged in the middle of the valve rod and at the upper end of the valve body, the inner wall of the sealing element is in fit sealing with the outer wall of the valve rod, and the outer wall of the sealing element is in fit sealing with the inner wall of the valve body;
the fixing piece, the fixing piece set up in the sealing member the valve body top, the valve rod passes perpendicularly the fixing piece middle part, the fixing piece with valve body fixed connection.
2. A stop valve for hydrogen gas as defined in claim 1, wherein said stop member comprises:
the sealing gasket is fixedly connected with the lower end of the valve rod;
the valve seat is arranged below the sealing gasket and connected with the valve body, and a sealing surface is formed when the sealing gasket is in contact fit with the valve seat.
3. A stop valve for hydrogen gas as defined in claim 1, wherein said fixing member comprises:
the compression nut is arranged above the sealing element, and the inner wall of the lower end of the compression nut is fixedly connected with the outer wall of the valve body;
and the clamping nut is arranged at the lower end of the clamping nut, the inner wall of the clamping nut is connected with the outer wall of the valve body, and the clamping nut is used for clamping the clamping nut.
4. A shut-off valve for hydrogen gas as claimed in claim 1, wherein the sealing member comprises:
the elastic piece is arranged on the outer side of the valve rod, and the upper end of the elastic piece is connected with the fixing piece in a matching way;
the first sealing part is arranged below the elastic part, the inner wall of the first sealing part is in fit sealing with the outer wall of the valve rod, and the outer wall of the first sealing part is in fit sealing with the valve body;
and the second sealing part is arranged under the first sealing part, and the lower end of the second sealing part is connected with the convex block on the inner wall of the middle part of the valve body in a matched manner.
5. A stop valve for hydrogen gas according to claim 4, wherein the first seal portion includes:
the pressing sleeve is arranged between the valve rod and the valve body and below the elastic piece;
the first sealing ring is arranged at the joint of the pressing sleeve and the valve rod;
and the second sealing ring is arranged at the joint of the pressing sleeve and the valve body.
6. A stop valve for hydrogen gas according to claim 4, wherein the second seal portion comprises:
the packing group is arranged right below the first sealing part, the inner wall of the packing group is attached to the outer wall of the valve rod, and the outer wall of the packing group is attached to the inner wall of the valve body;
the gasket is arranged below the whole packing set, and the lower part of the gasket is matched and connected with the convex block on the inner wall of the middle part of the valve body.
7. A shut-off valve for hydrogen gas as claimed in claim 6, wherein said packing set is a polymer material.
8. A hydrogen stop valve as defined in claim 1, wherein a handle is provided at the upper end of said valve stem, a screw is provided on said handle, and said handle is connected to said valve stem via said screw.
9. A stop valve for hydrogen gas as claimed in claim 1, wherein the valve body has a screw hole at a lower end thereof, the screw hole being located at a position deviated from the center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597857.0U CN211398619U (en) | 2019-09-24 | 2019-09-24 | Stop valve for hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597857.0U CN211398619U (en) | 2019-09-24 | 2019-09-24 | Stop valve for hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398619U true CN211398619U (en) | 2020-09-01 |
Family
ID=72207803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921597857.0U Active CN211398619U (en) | 2019-09-24 | 2019-09-24 | Stop valve for hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566679A (en) * | 2019-09-24 | 2019-12-13 | 张家港富瑞阀门有限公司 | Stop valve for hydrogen |
| CN115068050A (en) * | 2022-07-29 | 2022-09-20 | 重庆西山科技股份有限公司 | Medical grinding cutter and dynamic sealing structure thereof |
-
2019
- 2019-09-24 CN CN201921597857.0U patent/CN211398619U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566679A (en) * | 2019-09-24 | 2019-12-13 | 张家港富瑞阀门有限公司 | Stop valve for hydrogen |
| CN115068050A (en) * | 2022-07-29 | 2022-09-20 | 重庆西山科技股份有限公司 | Medical grinding cutter and dynamic sealing structure thereof |
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