CN207796074U - A kind of special arc-chutes piston of sulfur hexafluoride gas - Google Patents
A kind of special arc-chutes piston of sulfur hexafluoride gas Download PDFInfo
- Publication number
- CN207796074U CN207796074U CN201820116437.5U CN201820116437U CN207796074U CN 207796074 U CN207796074 U CN 207796074U CN 201820116437 U CN201820116437 U CN 201820116437U CN 207796074 U CN207796074 U CN 207796074U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- piston
- piston rod
- chutes
- seal ring
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of special arc-chutes pistons of sulfur hexafluoride gas, including piston only, the ontology includes sliding sleeve, piston rod and elastic seal ring, the sliding sleeve is connected through a screw thread with the piston rod, it is provided with taper surface on the piston rod, it is provided with elastic seal ring on the taper surface, described elastic seal ring one end is provided with rotary position limiting structure against the sliding sleeve on the sliding sleeve.Rotary position limiting structure is limited by sliding sleeve after used a period of time using the structure, and is screwed into sliding sleeve by rotating piston rod so that elastic seal ring increases the pressure of cylinder side wall, to ensure leakproofness.
Description
Technical field
The utility model belongs to component of machine technical field, more particularly to electrical equipment parts, and specifically a kind of six
Sulfur fluoride gas specific arc-chutes piston.
Background technology
Currently, SF6 (sulfur hexafluoride) electrical equipment has been widely used in power department, industrial and mining enterprises, electric power row is promoted
The fast development of industry.In recent years, with rapid economic development, China's power system capacity drastically expands, SF6 electrical equipment consumptions
More and more, effect of the SF6 gases in high voltage electric equipment is arc extinguishing and insulation.
Piston, since the machining accuracy between piston cylinder and piston cannot be guaranteed, piston are equipped in sulfur hexafluoride arc-chutes
Friction, which can be easy for being scratched, between sealing ring and piston cylinder on ring takes away or is seriously worn, and work is unreliable, influences to use
Service life.
Utility model content
The utility model is in view of the shortcomings of the prior art, provide a kind of special arc-chutes piston of sulfur hexafluoride gas, this kind of work
Plug can adjust the pressure between elastic seal ring and cylinder side wall, after used a period of time can be by adjusting pressure
The mode of power makes the leakproofness between piston and piston cylinder improve.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals：A kind of sulfur hexafluoride
Gas specific arc-chutes piston, including piston only, the ontology include sliding sleeve, piston rod and elastic seal ring, described
Sliding sleeve is connected through a screw thread with the piston rod, and taper surface is provided on the piston rod, bullet is provided on the taper surface
Property sealing ring, described elastic seal ring one end are provided with rotary position limiting structure against the sliding sleeve on the sliding sleeve.Using
The structure is after used a period of time limited rotary position limiting structure by sliding sleeve, and is screwed into sliding by rotating piston rod
In set so that elastic seal ring increases the pressure of cylinder side wall, to ensure leakproofness.
In above-mentioned technical proposal, specifically, the ontology is slideably positioned in cylinder body, the rotary position limiting structure includes institute
The limiting slot on ontology and the limited block on the cylinder body are stated, when the limiting slot engages with the limited block, institute
It states sliding sleeve and is rotated limit.
In above-mentioned technical proposal, it is preferred that the limited block is located at the bottom of the cylinder body, and the limiting slot is set to position
In the side towards the limited block.Making the position limiting structure not using the structure influences the normal work of piston, and conveniently into
Row adjustment.
The utility model compared with prior art, has the advantages that：A period of time is being used using the structure
Rotary position limiting structure is limited by sliding sleeve afterwards, and is screwed into sliding sleeve by rotating piston rod so that elastic seal ring pair
The pressure of cylinder side wall increases, to ensure leakproofness.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the utility model embodiment.
Specific implementation mode
The utility model is described in further detail with specific implementation mode below in conjunction with the accompanying drawings：Referring to Fig. 1, Yi Zhongliu
Sulfur fluoride gas specific arc-chutes piston, including piston only 1, the ontology 1 include that sliding sleeve 2, piston rod 3 and elasticity are close
Seal 4, the sliding sleeve 2 are connected through a screw thread with the piston rod 3, and taper surface 31, the cone are provided on the piston rod 3
It is provided with elastic seal ring 4 on shape face 31,4 one end of the elastic seal ring has on the sliding sleeve 2 against the sliding sleeve 2
There is rotary position limiting structure 5.Rotary position limiting structure is limited by sliding sleeve after used a period of time using the structure, and is led to
It crosses rotation piston rod to be screwed into sliding sleeve so that elastic seal ring increases the pressure of cylinder side wall, to ensure leakproofness.
The ontology 1 is slideably positioned in cylinder body 6, and the rotary position limiting structure 5 includes the limiting slot 51 on the ontology 1
And the limited block 61 on the cylinder body 6, when the limiting slot 51 engages with the limited block 61, the sliding sleeve 2
It is rotated limit.
The limited block 61 is located at the bottom of the cylinder body 6, and the limiting slot 51, which is set to, is located towards the limited block
61 side.Making the position limiting structure not using the structure influences the normal work of piston, and is conveniently adjusted.
Claims (3)
1. a kind of special arc-chutes piston of sulfur hexafluoride gas, including piston only（1）, it is characterised in that：The ontology（1）Packet
Include sliding sleeve（2）, piston rod（3）And elastic seal ring（4）, the sliding sleeve（2）With the piston rod（3）Connected by screw thread
It connects, the piston rod（3）On be provided with taper surface（31）, the taper surface（31）On be provided with elastic seal ring（4）, the bullet
Property sealing ring（4）One end is against the sliding sleeve（2）, the sliding sleeve（2）It is upper that there is rotary position limiting structure（5）.
2. a kind of special arc-chutes piston of sulfur hexafluoride gas as described in claim 1, it is characterised in that：The ontology（1）
It is slideably positioned in cylinder body（6）It is interior, the rotary position limiting structure（5）Including the ontology（1）On limiting slot（51）And it is located at
The cylinder body（6）On limited block（61）, when the limiting slot（51）With the limited block（61）When engaging, the sliding sleeve
（2）It is rotated limit.
3. a kind of special arc-chutes piston of sulfur hexafluoride gas as claimed in claim 2, it is characterised in that：The limited block
（61）Positioned at the cylinder body（6）Bottom, the limiting slot（51）It is set to and is located towards the limited block（61）Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820116437.5U CN207796074U (en) | 2018-01-24 | 2018-01-24 | A kind of special arc-chutes piston of sulfur hexafluoride gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820116437.5U CN207796074U (en) | 2018-01-24 | 2018-01-24 | A kind of special arc-chutes piston of sulfur hexafluoride gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207796074U true CN207796074U (en) | 2018-08-31 |
Family
ID=63270208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820116437.5U Expired - Fee Related CN207796074U (en) | 2018-01-24 | 2018-01-24 | A kind of special arc-chutes piston of sulfur hexafluoride gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207796074U (en) |
-
2018
- 2018-01-24 CN CN201820116437.5U patent/CN207796074U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20210124 |