CN217401693U - Sealing structure, pressure reducing valve and gas storage device - Google Patents
Sealing structure, pressure reducing valve and gas storage device Download PDFInfo
- Publication number
- CN217401693U CN217401693U CN202221197575.3U CN202221197575U CN217401693U CN 217401693 U CN217401693 U CN 217401693U CN 202221197575 U CN202221197575 U CN 202221197575U CN 217401693 U CN217401693 U CN 217401693U
- Authority
- CN
- China
- Prior art keywords
- sealing
- piston
- pressure relief
- groove
- relief inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a seal structure, relief pressure valve and gas storage device, seal structure includes: a piston and a sealing valve; a pressure relief channel is formed in the piston and penetrates through one axial end of the piston to form a pressure relief inlet; the sealing valve is used for opening and plugging the pressure relief inlet; the sealing valve comprises a sealing valve body, a piston and a pressure relief inlet, wherein one of the sealing valve body and the piston is provided with a protrusion, the other of the sealing valve body and the piston is provided with a groove, the protrusion and the groove surround the pressure relief inlet and extend to be annular, and the protrusion abuts against the groove when the pressure relief inlet is blocked by the sealing valve body. According to the utility model discloses a sealing structure is formed with protruding another on through being formed with one of them in will sealing valve and the piston and is formed with the recess, sealing force when can increase valve shutoff piston pressure release mouth guarantees the gas tightness.
Description
Technical Field
The utility model belongs to the technical field of the gas storage device technique and specifically relates to a seal structure, relief pressure valve and gas storage device are related to.
Background
In the related art, the pressure reducing valve is a key component of the gas storage device, and the pressure-flow characteristics thereof determine the airtightness of the entire gas storage device.
The traditional seal between the valve and the piston usually adopts a plane sealing form, and a hard seal is formed by the contact of a piston fillet and a valve plane, so that the processing requirements on two sealing surfaces of the sealing valve and the piston are extremely high, and in the sealing process, the sealing surfaces are easily deformed, so that the air tightness of the device is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a sealing structure, sealing structure is formed with the recess on protruding and another through being formed with on one of them in sealed valve and the piston, increases the sealing force between sealed valve and the piston, guarantees the gas tightness between sealed piston and the piston.
The utility model discloses still provide a relief pressure valve that has above-mentioned seal structure.
The utility model discloses still provide a gas storage device who has above-mentioned relief pressure valve.
According to the utility model discloses seal structure of first aspect includes: the piston is internally provided with a pressure relief channel, and the pressure relief channel penetrates through one axial end of the piston to form a pressure relief inlet; the sealing valve is used for opening and plugging the pressure relief inlet; the sealing valve comprises a sealing valve body, a piston and a pressure relief inlet, wherein one of the sealing valve body and the piston is provided with a protrusion, the other of the sealing valve body and the piston is provided with a groove, the protrusion and the groove surround the pressure relief inlet and extend to be annular, and the protrusion abuts against the groove when the pressure relief inlet is blocked by the sealing valve body.
According to the utility model discloses a seal structure is formed with on protruding and another recess through being formed with on one of them in sealed valve and the piston, increases the sealing force between sealed valve and the piston, guarantees the gas tightness between sealed piston and the piston.
In some embodiments, a width of the protrusion in a radial direction of the pressure relief inlet is gradually reduced, and a width of the groove in a radial direction of the pressure relief inlet is gradually reduced in a direction from a fixed end toward a free end of the protrusion.
In some embodiments, the groove is formed by a side surface of the sealing shutter facing the piston being recessed, the groove has a first side wall and a second side wall opposite to each other in a radial direction of the pressure relief inlet, the first side wall and the second side wall extend in opposite directions in a direction from an opening of the groove toward a bottom wall, and an arc bottom wall recessed away from an opening end of the groove is connected between the first side wall and the second side wall.
In some embodiments, in a radial outward and inward direction of the pressure relief inlet, an end face of the one end of the piston is formed as an inclined face which is away from the sealing valve and extends obliquely towards an axis of the pressure relief inlet, and the inclined face is connected with an outer wall face of the piston through an arc transition face.
In some embodiments, the ramp is disposed parallel to a radially inner sidewall of the groove.
In some embodiments, the angle between the slope and the central axis of the pressure relief inlet is: 45-75 degrees.
In some embodiments, a communication channel is formed in the sealing valve, and the communication channel penetrates through the sealing valve in the axial direction of the pressure relief inlet, and is located on the radial outer side of the groove and the protrusion.
In some embodiments, the outer side wall of the piston is provided with a sealing groove for accommodating a sealing ring.
According to the utility model discloses relief pressure valve of second aspect, include according to the utility model discloses the seal structure of first aspect.
According to the utility model discloses a relief pressure valve is through setting up the seal structure of above-mentioned first aspect to the wholeness ability of relief pressure valve has been improved.
According to the utility model discloses gas storage device of third aspect, include according to the utility model discloses the relief pressure valve of second aspect.
According to the utility model discloses a gas storage device is through setting up the relief pressure valve of above-mentioned second aspect to gas storage device's limbs performance has been improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a piston according to an embodiment of the present invention;
FIG. 2 is a right side view of the piston shown in FIG. 1;
FIG. 3 is a cross-sectional view of the piston shown in FIG. 2 at A-A;
fig. 4 is a schematic view of a sealing shutter according to an embodiment of the present invention;
FIG. 5 is a right side view of the sealing shutter shown in FIG. 4;
figure 6 is a cross-sectional view of the sealing shutter shown in figure 5 at B-B;
fig. 7 is a schematic view of a seal structure according to an embodiment of the present invention.
Reference numerals:
100. a sealing structure;
110. a piston;
111. a pressure relief channel; 112. a pressure relief inlet; 113. a protrusion; 1131. a bevel; 114. a sealing groove;
120. sealing the valve;
121. a groove; 1211. a first side wall; 1212. a second side wall; 122. a communication channel.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to 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", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
A seal structure 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 7.
As shown in fig. 7, the sealing structure 100 according to the embodiment of the first aspect of the present invention includes: a piston 110 and a sealing flap 120.
Specifically, referring to fig. 1 to 7, a pressure relief passage 111 is formed in the piston 110, and the pressure relief passage 111 penetrates through one axial end of the piston 110 to form a pressure relief inlet 112; the sealing valve 120 is used for opening and blocking the pressure relief inlet 112; wherein, one of the sealing shutter 120 and the piston 110 is formed with a protrusion 113 and the other is formed with a groove 121, that is, the protrusion 113 may be formed on the sealing shutter 120 and the groove 121 may be formed on the piston 110; it is also possible to form the groove 121 on the sealing shutter 120 and the protrusion 113 on the piston 110 at the same time. The protrusion 113 and the groove 121 both extend annularly around the pressure relief inlet 112, and the protrusion 113 abuts against the groove 121 when the sealing shutter 120 blocks the pressure relief inlet 112. In this way, the sealing force between the sealing shutter 120 and the piston 110 may be enhanced.
It should be noted that, compared with the sealing method in the prior art, in which the piston and the sealing shutter are sealed by a flat surface, the sealing contact area between the piston 110 and the sealing shutter 120 may be increased by the sealing method of the protrusion 113 and the groove 121, and the flat surface sealing is improved to the inclined surface 1131 sealing, so that the sealing force between the piston 110 and the sealing shutter 120 may be increased, and the air tightness of the device may be improved.
For example, referring to fig. 7, a protrusion 113 is formed on the piston 110, and a groove 121 is formed on the sealing shutter 120; in the process of pressure relief of the pressure relief valve, the sealing valve 120 opens the pressure relief inlet 112, and the gas is released to the outside through the pressure relief channel 111 in the piston 110, so that the purpose of pressure relief is achieved; after the pressure relief of the pressure relief valve is completed, the sealing valve 120 is used for blocking the pressure relief inlet 112, the groove 121 on the sealing valve 120 abuts against the protrusion 113 on the piston 110, and the sealing force between the sealing valve 120 and the piston 110 is increased, so that the pressure relief valve can ensure the air tightness of the gas storage device when the pressure inside the gas storage device is large.
According to the present invention, the sealing structure 100 increases the sealing force between the sealing shutter 120 and the piston 110 by forming the protrusion 113 on one of the sealing shutter 120 and the piston 110 and forming the groove 121 on the other, thereby ensuring the airtightness between the sealing piston 110 and the piston 110.
In an embodiment of the present invention, referring to fig. 3, in a direction from a fixed end toward a free end of the protrusion 113 (e.g., in a direction from right to left as shown in fig. 7), a width of the protrusion 113 in a radial direction (e.g., an up-down direction as shown in fig. 7) of the pressure relief inlet 112 is gradually reduced, and a width of the groove 121 in the radial direction of the pressure relief inlet 112 is gradually reduced. Therefore, the positioning of the protrusion 113 and the groove 121 is facilitated, and the processing precision of the protrusion 113 and the groove 121 is reduced.
Referring to fig. 7, the width of the free end of the protrusion 113 in the radial direction of the pressure relief inlet 112 is the smallest, the width of the groove surface of the groove 121 close to the piston 110 in the radial direction of the pressure relief inlet 112 is the largest, and the smallest width of the protrusion 113 is matched with the largest width of the groove 121, so that a certain error is allowed in the matching between the protrusion 113 and the groove 121, the processing precision of the protrusion 113 and the groove 121 is reduced, and the product cost is reduced.
Further, in a specific implementation process, the sealing shutter 120 and the piston 110 are made of different materials, the sealing shutter 120 and the piston 110 have different hardness, and generally, the hardness of the piston 110 is greater than that of the sealing shutter 120, for example, the sealing shutter 120 is made of a plastic material, and the piston 110 is made of a metal material; at least part of the abutting surface of the protrusion 113 and the groove 121 is an arc surface, so that the phenomenon that the protrusion 113 on the piston 110 punctures the sealing shutter 120 in the process of pressing the piston 110 and the sealing shutter 120 can be avoided.
In an embodiment of the present invention, referring to fig. 6, the groove 121 is formed by recessing a side surface of the sealing shutter 120 facing the piston 110 (for example, a right side surface of the sealing shutter 120 shown in fig. 7), the groove 121 has a first sidewall 1211 and a second sidewall 1212 opposite to each other in a radial direction of the pressure relief inlet 112, the first sidewall 1211 and the second sidewall 1212 extend toward each other in a direction from an opening of the groove 121 toward the bottom wall, and a circular arc bottom wall recessed away from an opening end of the groove 121 is connected between the first sidewall 1211 and the second sidewall 1212. Thus, the first sidewall 1211 and the second sidewall 1212 of the groove 121 cooperate with each other to form a tapered surface of the groove 121, and the tapered surface of the groove 121 cooperates with the inclined surface 1131 of the protrusion 113 to increase the sealing force, thereby achieving complete sealing under both low pressure and high pressure conditions.
In one embodiment of the present invention, referring to fig. 7, in the radial direction from outside to inside (e.g., from top to bottom and from bottom to top as shown in fig. 7) of the pressure relief inlet 112, the end surface of one end of the piston 110 is formed as a slope 1131 extending away from the sealing shutter 120 and obliquely toward the axis of the pressure relief inlet 112, e.g., the slope 1131 is formed as another tapered surface cooperating with the tapered surface of the groove 121, increasing the sealing force between the shutter 120 and the piston 110; the inclined surface 1131 is connected to the outer wall surface of the piston 110 through a circular arc transition surface. Thus, the slope 1131 and the outer wall surface of the piston 110 are transited through an arc at the free end of the protrusion 113, so as to prevent the free end of the protrusion 113 from puncturing the groove 121.
Referring to fig. 7, a protrusion 113 is formed between the inclined surface 1131 and the outer wall surface, and the first sidewall 1211 and the second sidewall 1212 of the groove 121 have different inclination angles; the first sidewall 1211 is matched with the inclined surface 1131 of the protrusion 113 to increase the sealing force between the protrusion 113 and the groove 121, and the second sidewall 1212 is used to avoid the outer wall surface of the piston 110; in this way, the protrusion 113 on the piston 110 is prevented from abutting on the plane of the sealing shutter 120 facing the piston 110 during the movement of the protrusion 113 towards the sealing shutter 120, and the protrusion 113 is prevented from piercing the sealing shutter 120 and damaging the sealing shutter 120.
Further, the inclined surface 1131 of the piston 110 may be formed in an arc structure, and the first sidewall 1211 on the groove 121 is formed in a concave structure matching with the inclined surface 1131 of the piston 110, so that the sealing contact area between the piston 110 and the sealing shutter 120 may also be increased, and the sealing force between the piston 110 and the sealing shutter 120 may also be increased.
In an embodiment of the present invention, referring to fig. 7, the inclined surface 1131 is disposed in parallel with the radially inner side wall of the groove 121. Therefore, in the process of sealing and matching the protrusion 113 on the piston 110 with the groove 121 on the sealing valve 120, the inclined surface 1131 is in full contact with the radial inner side wall of the groove 121, the contact area between the inclined surface 1131 and the radial inner side wall of the groove 121 is increased to the maximum extent, the sealing force between the protrusion 113 and the groove 121 is increased, and complete sealing can be realized in both low-pressure and high-pressure states.
In one embodiment of the present invention, referring to fig. 3, the angle between the inclined surface 1131 and the central axis of the pressure relief inlet 112 (e.g., the angle c shown in fig. 3) is: 45-75 degrees. In particular implementations, the included angles between the ramp 1131 and the central axis of the pressure relief inlet 112 may be set at 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, and 75 °.
Preferably, the included angle between the inclined surface 1131 and the central axis of the pressure relief inlet 112 may be set to 60 °, so that the sealing force between the protrusion 113 and the groove 121 may be greatly increased, and complete sealing may be achieved in both low pressure and high pressure states.
In an embodiment of the present invention, referring to fig. 7, an axial direction (for example, a left-right direction shown in fig. 7) of the sealing shutter 120, in which the pressure relief inlet 112 is formed, passes through a communication passage 122 of the sealing shutter 120, and the communication passage 122 is located radially outside the groove 121 and the protrusion 113. The communication channel 122 on the sealing valve 120 is mainly used to convey the gas of the gas storage device between the sealing valve 120 and the piston 110, and then the gas is discharged to the outside through the pressure relief channel 111 in the piston 110, so as to realize the pressure relief of the gas storage device.
In an embodiment of the present invention, referring to fig. 3, the outer sidewall of the piston 110 is provided with a sealing groove 114 for accommodating a sealing ring. Set up the sealing washer on piston 110's lateral wall, can guarantee gas storage device's pressure release, can only follow piston 110's pressure release passageway 111 discharge external, avoid the gas leakage of relief valve, influence gas storage device's normal use.
According to a second aspect of the present invention, a pressure reducing valve is provided, comprising a sealing structure 100 according to the first aspect of the present invention.
According to the utility model discloses pressure reducing valve through setting up the seal structure 100 of the above-mentioned first aspect embodiment to the wholeness ability of pressure reducing valve has been improved.
According to the utility model discloses third utility model embodiment's gas storage device, include according to the utility model discloses the relief pressure valve of aspect two embodiment to gas storage device's wholeness ability has been improved.
A seal structure 100 according to a specific embodiment of the present invention will be described below with reference to fig. 1 to 7.
According to the present invention, a sealing structure 100 according to an embodiment may include: a piston 110 and a sealing flap 120.
Specifically, referring to fig. 1 to 7, a pressure relief passage 111 is formed in the piston 110, and the pressure relief passage 111 penetrates through one axial end of the piston 110 to form a pressure relief inlet 112; the sealing valve 120 is used for opening and blocking the pressure relief inlet 112; one of the sealing valve 120 and the piston 110 is formed with a protrusion 113 and the other is formed with a groove 121, the protrusion 113 and the groove 121 both extend annularly around the pressure relief inlet 112, and the protrusion 113 abuts against the groove 121 when the sealing valve 120 blocks the pressure relief inlet 112. The width of the protrusion 113 in the radial direction of the pressure relief inlet 112 is gradually reduced, and the width of the groove 121 in the radial direction of the pressure relief inlet 112 is gradually reduced in the direction from the fixed end toward the free end of the protrusion 113.
The groove 121 is formed by recessing a side surface of the sealing shutter 120 facing the piston 110, the groove 121 has a first sidewall 1211 and a second sidewall 1212 opposite in a radial direction of the pressure relief inlet 112, the first sidewall 1211 and the second sidewall 1212 extend toward each other in a direction from an opening of the groove 121 toward the bottom wall, and a circular arc bottom wall recessed away from an opening end of the groove 121 is connected between the first sidewall 1211 and the second sidewall 1212.
In a radial outside-in direction of the pressure relief inlet 112, an end surface of the one end of the piston 110 is formed as a slope 1131 that is away from the sealing shutter 120 and extends obliquely toward an axis of the pressure relief inlet 112, and the slope 1131 is connected with an outer wall surface of the piston 110 through a circular arc transition surface. The inclined surface 1131 is disposed in parallel with the radially inner side wall of the groove 121. The angle between ramp 1131 and the central axis of pressure relief inlet 112 is: 45-75 degrees.
For example, referring to fig. 1 to 7, a protrusion 113 is formed on the piston 110, and a groove 121 is formed on the sealing shutter 120; in the process of pressure relief of the pressure relief valve, the sealing valve 120 opens the pressure relief inlet 112, and the gas is released to the outside through the pressure relief channel 111 in the piston 110, so that the purpose of pressure relief is achieved; after the pressure relief of the pressure relief valve is completed, the sealing valve 120 is used for blocking the pressure relief inlet 112, the groove 121 on the sealing valve 120 abuts against the protrusion 113 on the piston 110, and the sealing force between the sealing valve 120 and the piston 110 is increased, so that the pressure relief valve can ensure the air tightness of the gas storage device when the pressure inside the gas storage device is large.
According to the present invention, the sealing structure 100 increases the sealing force between the sealing shutter 120 and the piston 110 by forming the protrusion 113 on one of the sealing shutter 120 and the piston 110 and forming the groove 121 on the other, thereby ensuring the airtightness between the sealing piston 110 and the piston 110.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sealing structure, comprising:
the piston is internally provided with a pressure relief channel, and the pressure relief channel penetrates through one axial end of the piston to form a pressure relief inlet;
the sealing valve is used for opening and plugging the pressure relief inlet;
the pressure relief inlet is formed in the piston, a protrusion is formed on one of the sealing valve and the piston, a groove is formed in the other of the sealing valve and the piston, the protrusion and the groove surround the pressure relief inlet and extend to be annular, and the protrusion abuts against the inside of the groove when the sealing valve blocks the pressure relief inlet.
2. The seal structure according to claim 1, wherein a width of said projection in a radial direction of said pressure relief inlet is gradually reduced, and a width of said groove in a radial direction of said pressure relief inlet is gradually reduced, in a direction from a fixed end toward a free end of said projection.
3. A sealing structure according to claim 1, wherein the groove is formed by recessing a side surface of the sealing shutter facing the piston, the groove has a first side wall and a second side wall opposite in a radial direction of the pressure relief inlet, the first side wall and the second side wall extend in opposite directions in a direction from an opening of the groove toward a bottom wall, and an arc bottom wall recessed away from an opening end of the groove is connected between the first side wall and the second side wall.
4. A sealing structure according to any one of claims 1 to 3, wherein an end surface of said one end of said piston is formed as a slope extending away from said sealing shutter and obliquely toward an axis of said pressure relief inlet in a radial outside-in direction of said pressure relief inlet, said slope being connected to an outer wall surface of said piston through a circular arc transition surface.
5. The seal structure of claim 4, wherein the ramp is disposed parallel to a radially inner sidewall of the groove.
6. The seal structure of claim 4, wherein an angle between the chamfer and a central axis of the pressure relief inlet is: 45-75 degrees.
7. A sealing structure according to any one of claims 1 to 3, wherein a communication passage is formed in said sealing shutter, said communication passage extending through said sealing shutter in the axial direction of said pressure relief inlet, said communication passage being located radially outside said recess and said projection.
8. A sealing arrangement according to any of claims 1-3, wherein the outer side wall of the piston is provided with a sealing groove for receiving a sealing ring.
9. A pressure relief valve comprising a sealing structure according to any one of claims 1-8.
10. A gas storage device comprising the pressure reducing valve according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197575.3U CN217401693U (en) | 2022-05-10 | 2022-05-10 | Sealing structure, pressure reducing valve and gas storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221197575.3U CN217401693U (en) | 2022-05-10 | 2022-05-10 | Sealing structure, pressure reducing valve and gas storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217401693U true CN217401693U (en) | 2022-09-09 |
Family
ID=83145279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221197575.3U Active CN217401693U (en) | 2022-05-10 | 2022-05-10 | Sealing structure, pressure reducing valve and gas storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217401693U (en) |
-
2022
- 2022-05-10 CN CN202221197575.3U patent/CN217401693U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10018290B2 (en) | Pressing ring, joint, and valve | |
| JP4836870B2 (en) | Pipe joint sealing material and pipe joint using this sealing material | |
| JPH01112095A (en) | Sealed packing for telescopic type fixing joint | |
| JP2001349433A (en) | Packing ring for connecting between pipe sleeve having smooth inner wall and peak end of corrugated pipe | |
| CN217401693U (en) | Sealing structure, pressure reducing valve and gas storage device | |
| US6382268B1 (en) | Inflation device | |
| AU2020227050A1 (en) | Universal indissoluble pipe connection system and joint comprised in said system | |
| CN216742879U (en) | Stop valve and refrigerating system thereof | |
| JP2005048853A (en) | Ball valve | |
| WO2024109096A1 (en) | Double-ball valve for large loading and unloading arm | |
| CN203743679U (en) | Pressure sealing washer of large diameter cam locking type rapid joint | |
| CN214743299U (en) | Positive and negative pressure sealing ring and pipeline connecting structure | |
| US11964552B2 (en) | Pressure vessel and vehicle | |
| CN217321478U (en) | Red wine stopper | |
| CN213091080U (en) | Sealing joint | |
| JP2005004553A (en) | Pressure reducing valve | |
| CN211501645U (en) | Stop valve and valve core thereof | |
| CN208123707U (en) | Pipe end sealing device | |
| JP2016053420A (en) | Pipe joint | |
| CN213920567U (en) | Tyre valve core | |
| US20090182286A1 (en) | High Pressure Sealing Septum | |
| CN113154062B (en) | Stepped sealing structure and valve body structure suitable for large pressure span | |
| CN209977238U (en) | Plane sealing three-way structure | |
| CN216233848U (en) | Spring sheet type sealing cover and spring sheet type sealing container | |
| CN213871085U (en) | Compression-resistant sealing ring special for valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |