CN205226431U - A sealed backing ring for high pressure sluice valve - Google Patents
A sealed backing ring for high pressure sluice valve Download PDFInfo
- Publication number
- CN205226431U CN205226431U CN201520851259.7U CN201520851259U CN205226431U CN 205226431 U CN205226431 U CN 205226431U CN 201520851259 U CN201520851259 U CN 201520851259U CN 205226431 U CN205226431 U CN 205226431U
- Authority
- CN
- China
- Prior art keywords
- backing ring
- gasket ring
- pressure
- high pressure
- ring body
- 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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Abstract
The utility model relates to a sealed pipeline field specifically is a sealed backing ring for high pressure sluice valve, it includes backing ring body, characterized by: the last arris of backing ring body lateral surface, lower arris have the chamfer structure, and backing ring body medial surface bottom has the indent structure. This sealed backing ring uses two inclined planes of lateral surface to adopt the recess to form pressure differential as primary seal face, medial surface, has pressure self tightening sealing characteristics, uses under the high -pressure condition more than the suitable 10000psi, and suitable severe A corrosive environment uses down and has reduced the possibility of leaking, realizes reliable high low pressure seal. It is reliable for eight ordinary corner pad ring sealing performance under the high -pressure state, has reduced the pretightning force of locking bolt, the life of extension bolt and backing ring itself many times the dismouting use, life is long, maintains the convenience.
Description
Technical field
The utility model relates to closed conduit field, specifically a kind of gasket ring for high pressure sluice valve.
Background technique
Sealing between the valve body of existing gate valve and valve gap mainly adopts anistree gasket ring, and it is the pretightening force by bolt completely, forces octangonal ring annular strain, by anistree gasket ring inclined-plane interference, reaches sealing effect (as shown in Figure 1).The sealing configuration of the anistree gasket ring of this utilization, bolt needs to bear pressure medium and great pretightening force simultaneously; Because it bears very large pulling force, cause significantly reduce the working life of bolt.And the sealing surface adaptivity that octangonal ring ring is formed after using after a while weakens, sealing effect reduces gradually and even lost efficacy, because of this increasing maintenance and the replacement cost of product, and sealing reliability and seal endurance and also can not be guaranteed.
Summary of the invention
It is reliable that the object of the invention is to provide a kind of sealing, can use lastingly, the gasket ring of high pressure sluice valve easy to maintenance.
For a gasket ring for high pressure sluice valve, it comprises gasket ring body, and upper edge, the lower arris of this outside of gasket ring have chamfering structure, have concave inward structure bottom gasket ring body inner side surface.
The described gasket ring for high pressure sluice valve, the angle between this outside of gasket ring and upper edge, lower arris chamfering is 20 ~ 25 °.
The described gasket ring for high pressure sluice valve, the concave inward structure bottom gasket ring body inner side surface is right angle groove, has arc structure at the knuckle place at right angle.
This gasket ring with two of outer side surface inclined-planes for primary sealing area, inner side surface adopts groove to form pressure reduction, has pressure energized seal feature, applies under being applicable to more than 10000psi condition of high voltage, apply the possibility reducing leakage under being applicable to severe corrosive environment, realize the sealing of reliable high low pressure.For common anistree gasket ring, sealability is reliable in a high voltage state for it, reduces the pretightening force of lock bolt, extends working life of bolt and gasket ring itself can use by being dismounted for multiple times, long service life, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the sectional view of anistree gasket ring.
Fig. 2 is gate valve structure schematic diagram.
Fig. 3 is the partial enlargement at A place in Fig. 2.Figure
Fig. 4 is the sectional view of this gasket ring.
Embodiment
The utility model is further illustrated below by way of specific embodiment.
As shown in Figure 4, a kind of gasket ring for high pressure sluice valve, it comprises gasket ring body 3, and the upper edge of gasket ring body 3 outer side surface, lower arris have chamfering structure 31,32, and the angle between described chamfering structure 31,32 and gasket ring body 3 outer side surface is 23 °; Have concave inward structure 33 bottom gasket ring body 3 inner side surface, described concave inward structure 33 is right angle grooves, has arc structure at the knuckle place at right angle.
As shown in Figure 2 and Figure 3, this gasket ring 3 is arranged between gate valve body 2 and gate valve cover 1, specifically between gate valve body seal groove and gate valve cover seal groove.
The working principle of this gasket ring is: two 23 ° of chamferings under bolt pretightening effect with valve seal groove inclined-plane, valve bonnet seal groove inclined-plane, form close contact, realize low pressure seal.In use simultaneously, along with the change of pressure medium and temperature, high-pressure medium enters valve seal groove, valve bonnet seal groove from valve pocket, because now this gasket ring upper and lower end face pressure balances, medium with high pressure enters in the groove of this gasket ring, promotes this gasket ring and realizes high pressure sealing relative to valve seal groove and valve bonnet seal groove generation relative displacement.
This gasket ring with two of outer side surface inclined-planes for primary sealing area, inner side surface adopts groove to form pressure reduction, has pressure energized seal feature, applies under being applicable to more than 10000psi condition of high voltage, apply the possibility reducing leakage under being applicable to severe corrosive environment, realize the sealing of reliable high low pressure.For common anistree gasket ring, sealability is reliable in a high voltage state for it, reduces the pretightening force of lock bolt, extends working life of bolt and gasket ring itself can use by being dismounted for multiple times, long service life, easy to maintenance.
Claims (3)
1. for a gasket ring for high pressure sluice valve, it comprises gasket ring body, it is characterized in that: upper edge, the lower arris of this outside of gasket ring have chamfering structure, have concave inward structure bottom gasket ring body inner side surface.
2. the gasket ring for high pressure sluice valve according to claim 1, is characterized in that: the angle between this outside of gasket ring and upper edge, lower arris chamfering is 20 ~ 25 °.
3. the gasket ring for high pressure sluice valve according to claim 1, is characterized in that: the concave inward structure bottom gasket ring body inner side surface is right angle groove, has arc structure at the knuckle place at right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851259.7U CN205226431U (en) | 2015-10-30 | 2015-10-30 | A sealed backing ring for high pressure sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520851259.7U CN205226431U (en) | 2015-10-30 | 2015-10-30 | A sealed backing ring for high pressure sluice valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226431U true CN205226431U (en) | 2016-05-11 |
Family
ID=55901498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520851259.7U Expired - Fee Related CN205226431U (en) | 2015-10-30 | 2015-10-30 | A sealed backing ring for high pressure sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226431U (en) |
-
2015
- 2015-10-30 CN CN201520851259.7U patent/CN205226431U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160511 Termination date: 20201030 |