CN205592395U - Resistant ultra -low temperature two way seal circle - Google Patents
Resistant ultra -low temperature two way seal circle Download PDFInfo
- Publication number
- CN205592395U CN205592395U CN201620336484.1U CN201620336484U CN205592395U CN 205592395 U CN205592395 U CN 205592395U CN 201620336484 U CN201620336484 U CN 201620336484U CN 205592395 U CN205592395 U CN 205592395U
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- Prior art keywords
- ring
- lip
- ultralow temperature
- metal spring
- spring
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Abstract
The utility model discloses a resistant ultra -low temperature two way seal circle, including U type supporter and retaining ring, U type supporter sub -unit connection has outer lip, the inboard of outer lip is provided with outer metal spring, outer metal spring's inboard is provided with the retaining ring, retaining ring one side is provided with interior metal spring, one side of interior metal spring is provided with interior lip, the higher authority of retaining ring is provided with the pressure release groove. Beneficial effect lies in: add ring structure and modified PTFE lip sealing material with the dual spring, back to back installation through the spring pretension, makes seal lip and axle, hole closely cooperate, under ultra -low temperature, can prevent gaseous leakage effectively, solves the difficult problem of ultra -low temperature condition lower seal.
Description
Technical field
This utility model relates to sealing ring design field, is specifically related to a kind of two-way sealing ring of resistance to ultralow temperature.
Background technology
Recently as oil, the fast development of shale gas, at ultralow temperature industry such as LNG, LPG, LEG etc.,
Typically require the resistance to low temperature of equipment between-196 DEG C～260 DEG C, therefore to ultralow temperature equipment such as lock
Reliability, adaptability, stability and the sealing requirements of valve, check-valves, ball valve etc. are more and more higher.Close
Seal is as one indispensable critical piece of ultralow temperature equipment, to ultralow temperature equipment dependability, stability
Guarantee play an important role.And the design Main Basis that ultralow temperature equipment seals the most both at home and abroad
API-6D-2008 performs, and uses AS 568A standard.The most all kinds of sealing rings make under ultralow temperature equipment
Used time is easily caused gas leakage, and sealing effectiveness is the best, although many producers structure and material to sealing
Can be optimized, improve, achieve some effects, but and not up to condition needed for ultralow temperature equipment.
Utility model content
The purpose of this utility model is that provides a kind of resistance to ultralow temperature two way seal to solve the problems referred to above
Circle.
This utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of two-way sealing ring of resistance to ultralow temperature, including U-shaped supporter and back-up ring, described U-shaped supporter bottom
Connecting has outer lip, the inner side of described outer lip to be provided with outer metal spring, the inner side of described outer metal spring
Being provided with described back-up ring, described back-up ring side is provided with interior metal spring, and the side of described interior metal spring sets
Be equipped with inner lip, described back-up ring be provided above with gas pressure relief slot.
In said structure, described outer lip and described U-shaped supporter are fixed in valve body hole, by axle or axle
Set is arranged on inside described inner lip, by described interior metal spring, described outer metal spring and described back-up ring,
Apply a powerful pretightning force to described inner lip and described outer lip, make between described inner lip and axle,
Fit tightly between described outer lip and hole, prevent described inner lip and described outer lip and axle and valve body hole it
Between produce gap, thus ensure good sealing effectiveness, the most described back-to-back formula of U-shaped supporter is installed,
Effectively prevent gas from leaking.
In order to improve the using effect of the two-way sealing ring of resistance to ultralow temperature further, described outer lip and described U-shaped
Supporter is connected, and described inner lip is connected with described U-shaped supporter.
In order to improve the using effect of the two-way sealing ring of resistance to ultralow temperature further, described back-up ring is stuck in described U-shaped
Inside supporter.
In order to improve the using effect of the two-way sealing ring of resistance to ultralow temperature further, described outer metal spring is stuck in institute
State between back-up ring and described outer lip.
In order to improve the using effect of the two-way sealing ring of resistance to ultralow temperature further, described interior metal Spring Card is in institute
State between back-up ring and described inner lip.
In order to improve the using effect of the two-way sealing ring of resistance to ultralow temperature further, described gas pressure relief slot takes shape in described
Back-up ring surface.
Have the beneficial effects that: use dual spring to add back-up ring structure and modified ptfe lip seal material, back-to-back
Install, by spring pre-tightening, make sealing lip closely cooperate with axle, hole, under ultralow temperature, can effectively prevent
The only leakage of gas, the problem of difficult sealing in the case of solution ultralow temperature.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of two-way sealing ring of resistance to ultralow temperature described in the utility model；
Fig. 2 is the installation view of a kind of two-way sealing ring of resistance to ultralow temperature described in the utility model；
Fig. 3 is the top view of a kind of two-way sealing ring of resistance to ultralow temperature described in the utility model；
1, outer metal spring；2, outer lip；3, U-shaped supporter；4, inner lip；5, interior metal spring；
6, back-up ring；7, gas pressure relief slot.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1-Figure 3, a kind of two-way sealing ring of resistance to ultralow temperature, including U-shaped supporter 3 and back-up ring 6,
U-shaped supporter 3 bottom connects has outer lip 2, the inner side of outer lip 2 to be provided with outer metal spring 1, outer gold
Belonging to spring 1 and be used for supporting outer lip 2, the inner side of outer metal spring 1 is provided with back-up ring 6, and back-up ring 6 is higher than U
Type supporter 3, plays certain protective effect, places outer lip 2 and inner lip 4 simultaneously whole sealing member
Compressive deformation, back-up ring 6 side is provided with interior metal spring 5, and interior metal spring 5 is used for supporting inner lip 4,
The side of interior metal spring 5 is provided with inner lip 4, outer lip 2 and inner lip 4 and plays envelope gas effect, prevents
Valve internal gas leaks, back-up ring 6 be provided above with gas pressure relief slot 7, gas pressure relief slot 7 is for pressure release.
In said structure, U-shaped supporter 3, outer lip 2 and inner lip 4 all use modified ptfe low temperature material
Material, and connect as one, forming U-shaped structure, back-up ring 6 uses rustless steel F316L, not only increases sealing
The intensity of circle, has antirust function simultaneously, and back-up ring 6 is processed into I-shaped structure, effectively prevents interior metal
Spring 5 and outer metal spring 1 are extruded, and back-to-back type is installed and made a kind of two-way sealing ring of resistance to ultralow temperature have
Double H-type supports, and has dual lip configuration simultaneously, and interior metal spring 5 and outer metal spring 1 all use Kazakhstan to close
Gold manufactures, and seam uses special process to be welded, and is supplied to lip by double H-type spring under ultralow temperature
The powerful pretightning force of mouth, makes a kind of two-way sealing ring of resistance to ultralow temperature realize good with axle, hole under ultralow temperature
Laminating, prevents from producing between lip and axle, hole gap, thus good sealing effectiveness is effectively ensured.
In order to improve the using effect of ultralow temperature two-way sealing ring further, outer lip 2 and U-shaped supporter 3
Being connected, inner lip 4 is connected with U-shaped supporter 3, and it is internal that back-up ring 6 is stuck in U-shaped supporter 3, outward
Metal spring 1 is stuck between back-up ring 6 and outer lip 2, and interior metal spring 5 is stuck in back-up ring 6 and inner lip 4
Between, gas pressure relief slot 7 takes shape in back-up ring 6 surface.
Of the present utility model ultimate principle, principal character and advantage have more than been shown and described.The skill of the industry
Art personnel are it should be appreciated that this utility model is not restricted to the described embodiments, in above-described embodiment and description
Describe simply illustrates principle of the present utility model, on the premise of without departing from this utility model spirit and scope,
This utility model also has various changes and modifications, and these changes and improvements both fall within this claimed practicality
In novel scope.This utility model claims scope and is defined by appending claims and effect thing thereof.
Claims (6)
1. the two-way sealing ring of resistance to ultralow temperature, it is characterised in that: include U-shaped supporter and back-up ring, described
U-shaped supporter bottom connects has outer lip, the inner side of described outer lip to be provided with outer metal spring, described outer gold
The inner side belonging to spring is provided with described back-up ring, and described back-up ring side is provided with interior metal spring, described interior metal
The side of spring is provided with inner lip, described back-up ring be provided above with gas pressure relief slot.
A kind of two-way sealing ring of resistance to ultralow temperature, it is characterised in that: described outer lip
Mouth is connected with described U-shaped supporter, and described inner lip is connected with described U-shaped supporter.
A kind of two-way sealing ring of resistance to ultralow temperature, it is characterised in that: described back-up ring
It is stuck in inside described U-shaped supporter.
A kind of two-way sealing ring of resistance to ultralow temperature, it is characterised in that: described outer gold
Belong to Spring Card between described back-up ring and described outer lip.
A kind of two-way sealing ring of resistance to ultralow temperature, it is characterised in that: described Endothelium corneum
Belong to Spring Card between described back-up ring and described inner lip.
A kind of two-way sealing ring of resistance to ultralow temperature, it is characterised in that: described pressure release
Slot shaping is in described back-up ring surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336484.1U CN205592395U (en) | 2016-04-20 | 2016-04-20 | Resistant ultra -low temperature two way seal circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620336484.1U CN205592395U (en) | 2016-04-20 | 2016-04-20 | Resistant ultra -low temperature two way seal circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205592395U true CN205592395U (en) | 2016-09-21 |
Family
ID=56935207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620336484.1U Active CN205592395U (en) | 2016-04-20 | 2016-04-20 | Resistant ultra -low temperature two way seal circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205592395U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925434A (en) * | 2019-11-27 | 2020-03-27 | 西安航天动力研究所 | Ultra-low temperature high-bearing bidirectional sealing device |
| CN113483098A (en) * | 2021-07-14 | 2021-10-08 | 西安航天动力研究所 | Ring groove high-pressure self-sealing mechanism and liquid flow detection device for injector plate |
-
2016
- 2016-04-20 CN CN201620336484.1U patent/CN205592395U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925434A (en) * | 2019-11-27 | 2020-03-27 | 西安航天动力研究所 | Ultra-low temperature high-bearing bidirectional sealing device |
| CN113483098A (en) * | 2021-07-14 | 2021-10-08 | 西安航天动力研究所 | Ring groove high-pressure self-sealing mechanism and liquid flow detection device for injector plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 1 Xinyu North Road, Ningxi Street, Zengcheng District, Guangzhou City, Guangdong Province, 510000 Patentee after: GUANGZHOU JST SEALS TECHNOLOGY Co.,Ltd. Address before: Building B, No. 718 Chuangye Avenue, High tech Industrial Development Zone, Guangzhou City, Guangdong Province, 510530 Patentee before: GUANGZHOU JST SEALS TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |