CN209041970U - A kind of storage cylinder bottleneck structure - Google Patents
A kind of storage cylinder bottleneck structure Download PDFInfo
- Publication number
- CN209041970U CN209041970U CN201821166520.XU CN201821166520U CN209041970U CN 209041970 U CN209041970 U CN 209041970U CN 201821166520 U CN201821166520 U CN 201821166520U CN 209041970 U CN209041970 U CN 209041970U
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- China
- Prior art keywords
- bottleneck
- valve
- storage cylinder
- seal groove
- diameter
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Abstract
The utility model is a kind of storage cylinder bottleneck structure comprising: bottleneck and valve, bottleneck inner surface are equipped with screw thread, and valve exterior surface is equipped with screw thread, and the two is locked by helicitic texture；Axial seal grooves are arranged in the bottleneck endface, setting the first sealing ring matched with its size in slot；One radial seal groove is set in the valve bottom, places the second sealing ring in the radial seal groove；Cylindrical surface is set in the bottleneck inner surface run-out(of thread), the cylindrical surface diameter is matched with the valve bottom radial seal groove diameter, the second seal diameter size.It is sealed by being provided at two in bottle mouth position, significantly enhances the leakproofness of bottleneck Yu valve junction.
Description
Technical field
The utility model relates to a kind of storage cylinder bottleneck structures, are suitable for gas cylinder sealing means and use bottleneck and valve seal
Structure, the sealed connection being particularly suitable between the gas cylinder and valve body of 70MPa gas pressure or more.
Background technique
With the development of clean energy resource, gas-fed fuel cell technology has also obtained development at full speed.As in gas storage system
Main component, automobile-used gas storage gas cylinder especially hydrogen storage cylinder has many advantages, such as that light weight, volume are big, pressure is high.In order to increase
The charge pressure of hydrogen storage content, current automobile-used hydrogen storage cylinder has reached 70MPa.Automobile-used hydrogen storage cylinder bottleneck uses straight thread, generally
In such a way that an axial sealing ring seals.Due to the particularity of stored gas-hydrogen, automobile-used hydrogen storage cylinder is in 70MPa
High pressure under easily leaked from bottleneck and valve junction.
Summary of the invention
To solve the above problems, the utility model is effectively improved the shortcomings that above-mentioned prior art, a kind of storage cylinder bottle is provided
Mouth structure, to forgo existing product the shortcomings that, enhance the leakproofness of storage cylinder.
In order to achieve the above objectives, the utility model includes bottleneck and valve, and bottleneck inner surface is equipped with screw thread, valve exterior surface
Equipped with screw thread, the two is locked by helicitic texture；Axial seal grooves are arranged in the bottleneck endface, and setting is matched with its size in slot
First sealing ring of set；One radial seal groove is set in the valve bottom, is placed in the radial seal groove mating with it
The second sealing ring；In the bottleneck inner surface run-out(of thread), cylindrical surface, the cylindrical surface diameter and the valve bottom are set
Radial seal groove diameter, the second seal diameter size match.
Preferably, the cylindrical face surface of the bottleneck inner surface bottom of thread is smooth.
Preferably, the cylindrical face surface roughness grade number of the bottleneck inner surface bottom of thread is lower than Ra1.6.
Preferably, this storage cylinder bottleneck structure is particularly suitable for the sealing gas cylinder of 70MPa gas pressure or more.
The utility model is to overcome the problems, such as that prior art exists, and provides a kind of storage cylinder bottleneck structure, passes through setting two
Road soft sealing structure further enhances the airtightness of gas cylinder.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model bottleneck and valve discrete state.
Fig. 2 is the schematic diagram of the utility model bottleneck and valve locking states.
[appended drawing reference]
1 valve
2 bottleneck inner surface screw threads
The cylindrical surface of the 3 bottleneck inner surface bottoms of thread
Radial seal groove on 4 valves
5 bottlenecks
6 valve exterior surface screw threads
7 bottleneck end axial seal grooves
Specific embodiment
The advantages of to be easier to understand the utility model, feature and reach the technical method of technical effect will be referring to illustration
Property embodiment and institute's accompanying drawings are explained in more detail, and the utility model can be realized in different forms, therefore should not be managed
Solution is only limitted to embodiments set forth herein for the utility model, on the contrary, to those skilled in the art, provided implementation
Example is by more thorough and comprehensive and completely reception and registration the utility model scope, and the utility model will be to apply for a patent file
Claim determines protection scope.
As shown in Figure 1, a kind of storage cylinder bottleneck structure includes bottleneck 5 and valve 1, bottleneck inner surface is equipped with screw thread 2, valve
Outer surface is equipped with screw thread 6, and axial seal grooves 7 are arranged in bottleneck endface, setting the first O-ring matched with its size in slot；?
A radial seal groove 4 is arranged in valve bottom, and the second O-ring is arranged in radial seal groove；The setting of bottleneck inner surface run-out(of thread)
Cylindrical surface 3, the cylindrical surface diameter and the valve bottom radial seal groove diameter, the second O-ring diameter match
It closes.The cylindrical face surface of the bottleneck inner surface bottom of thread is smooth, and coarser level is less than Ra1.6.
As shown in Fig. 2, valve is screwed into bottleneck, bottleneck endface is arranged in axial seal grooves when bottleneck to be sealed
First O-ring, valve top part reaches sealing effect by squeezing the first O-ring, while the second O-ring is arranged in valve bottom,
It is also formed at another road sealing by the extruding of bottleneck inner surface run-out(of thread) smooth, cylindrical peripheral surface, in this way in automobile-used hydrogen storage cylinder bottle
Have at mouthful and sealed at two, significantly enhances the leakproofness of bottleneck Yu valve junction.
Above said content, the only most preferred embodiment of the utility model cannot limit the utility model implementation with this
Range；All simple equivalence changes done according to present utility model application the scope of the patents and utility model specification content with repair
Decorations, should still belong to the range that the utility model patent covers.
Claims (4)
1. a kind of storage cylinder bottleneck structure characterized by comprising bottleneck and valve, bottleneck inner surface is equipped with screw thread, outside valve
There is screw thread on surface, and the two is locked by helicitic texture；Axial seal grooves, setting in axial seal grooves is arranged in the bottleneck endface
The first sealing ring matched with its size；One radial seal groove is set in the valve bottom, is put in the radial seal groove
Set the second sealing ring matched with its size；In the bottleneck inner surface run-out(of thread), cylindrical surface, the cylindrical surface diameter are set
It is matched with the valve bottom radial seal groove diameter, the second seal diameter size.
2. storage cylinder bottleneck structure according to claim 1, it is characterised in that: the cylindrical face surface is smooth.
3. storage cylinder bottleneck structure according to claim 2, it is characterised in that: the cylindrical face surface roughness grade number is low
In Ra1.6.
4. storage cylinder bottleneck structure according to claim 1-3, it is characterised in that: be suitable for 70MPa gas pressure
Gas cylinder sealing structure more than power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166520.XU CN209041970U (en) | 2018-07-23 | 2018-07-23 | A kind of storage cylinder bottleneck structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821166520.XU CN209041970U (en) | 2018-07-23 | 2018-07-23 | A kind of storage cylinder bottleneck structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041970U true CN209041970U (en) | 2019-06-28 |
Family
ID=67029784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821166520.XU Active CN209041970U (en) | 2018-07-23 | 2018-07-23 | A kind of storage cylinder bottleneck structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209041970U (en) |
-
2018
- 2018-07-23 CN CN201821166520.XU patent/CN209041970U/en active Active
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