CN106641263A - Air seal structure - Google Patents
Air seal structure Download PDFInfo
- Publication number
- CN106641263A CN106641263A CN201611129699.7A CN201611129699A CN106641263A CN 106641263 A CN106641263 A CN 106641263A CN 201611129699 A CN201611129699 A CN 201611129699A CN 106641263 A CN106641263 A CN 106641263A
- Authority
- CN
- China
- Prior art keywords
- groove
- section
- seal
- narrow slot
- seal groove
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to the field of seal structures, in particular to an air seal structure. The air seal structure comprises a seal groove, a cover sealing piece, and a seal ring which is arranged in the seal groove, wherein the cross section of the seal groove is in a T shape, the seal groove comprises a wide groove section close to the groove mouth of the seal groove and a narrow groove section close to the groove bottom of the seal groove, transitional connecting walls are arranged between two narrow groove section side walls and the wide groove section groove bottom, the seal ring is matched with the cover sealing piece, the groove bottom of the seal groove and the two transitional connecting walls in a compressed mode so as to achieve sealing. Compared with an existing air seal structure, the number of sealing faces of the seal ring and the seal groove is increased in the air seal structure, and the contact area between the seal ring and the cover sealing piece is increased at the same time, thus the sealing effect is improved, and the problem that the existing air seal structure has a poor sealing effect is solved.
Description
Technical field
The present invention relates to sealing structure field, more particularly to gas sealing structure.
Background technology
The sealing structure of machinery equipment can prevent the intrusion of introduced contaminants, while sealed medium can also be prevented from knot
Leak at conjunction, it is to avoid to environment, it is ensured that the operation safety of equipment.In the sealing pipeline of mesolow gas, often with
Gas working dielectric or trandfer fluid, the sealing of gas is particularly important, and gas leakage can cause the damage of equipment, cause
Economic loss, while also polluting the environment, causing casualties.It is close with rectangle that current gas sealing structure is generally sealing ring
Sealing groove combines to be formed, as shown in figure 1, sealing ring 10 be subject to the pressure of cover closing member 30 after compress, if the decrement of sealing ring 10 compared with
Greatly, sealing ring 10 compress after may contact with the two sides of seal groove 20, but lateral contact force is smaller, it is difficult to it is close
Sealing groove side wall and pressure tightening seal, causes the problem of the sealing effectiveness difference of gas sealing structure.
The content of the invention
It is an object of the invention to provide a kind of gas sealing structure, poor with the gas sealing structure sealing effectiveness for solving current
Problem.
For achieving the above object, the technical scheme of gas sealing structure of the invention is：Gas sealing structure, including sealing
Groove, cover closing member and the sealing ring being arranged in seal groove, the cross section of described seal groove is T-shaped, including near seal groove groove
Mouthful sipes section and the narrow slot section near seal groove bottom land, be provided with transition between described two narrow slot section side walls and sipes section bottom land
Connection wall, described sealing ring and cover closing member, seal groove bottom land and two transition connection wall compression fits are realizing sealing.
Described sipes section bottom land is obliquely installed, and sipes section bottom land is in the part away from narrow slot section notch higher than near narrow slot
The part of section notch.
Two narrow slot section sidewall slopes are arranged so that narrow slot section forms flaring structure.
The distance between two described narrow slot section side walls are less than sealing ring in a state of nature along narrow slot section groove width direction
Size.
Height of the height of described sipes section less than narrow slot section.
Described sealing ring is O-ring seal.
Beneficial effects of the present invention are：The cross section of the seal groove of the gas sealing structure of the present invention is T-shaped including close
The sipes section of notch and the narrow slot section near bottom land, are provided with transition company between two narrow slot section side walls and corresponding two sipes section bottom land
Connect wall, sealing ring and cover closing member, seal groove bottom land and two transition connection wall compression fits realizing sealing, increased sealing ring with
The sealing surface quantity of seal groove, simultaneously because sealing ring is close to realize with the transition connection wall compression fit in two groove side walls
Envelope, under the squeezing action of two transition connection walls, sealing ring increases in sipes section along the size in sipes section groove width direction, increases
Big contact area of the sealing ring with cover closing member.Compared with current gas sealing structure, the gas sealing structure of the present invention
Sealing ring and the sealing surface quantity of seal groove, while also increasing the contact area of sealing ring and cover closing member, improve sealing effect
Really, solve the problems, such as that current gas sealing structure sealing effectiveness is poor.
Description of the drawings
Fig. 1 is the structural representation of gas sealing structure of the prior art；
Fig. 2 is the structural representation of the specific embodiment of the gas sealing structure of the present invention；
Fig. 3 is the structural representation of the seal groove of the specific embodiment of the gas sealing structure of the present invention.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the gas sealing structure of the present invention, as shown in Figures 2 and 3, gas sealing structure includes sealing
Groove 2, the sealing ring 1 being arranged in seal groove and cover closing member 3, the sealing ring 1 in the present embodiment is O-ring seal, and seal groove 2 is wrapped
Include the sipes section 22 and the narrow slot section 24 near seal groove bottom land 23 near seal groove notch 21, seal groove 2 has and is oppositely arranged
Two groove side walls, two groove side walls include sipes section side wall 221, sipes section bottom land 222, narrow slot section side wall
241st, the transition connection wall 25 between sipes section bottom land 222 and narrow slot section side wall 241.
Sealing ring 1 and cover closing member 3, the compression fit of 23 and two transition connection wall of seal groove bottom land 25 are realizing sealing.This reality
In applying example, sealing ring 1 is also with sipes section bottom land near the part of transition connection wall 25 and narrow slot section side wall near transition connection wall
25 part sealing coordinates, and in other embodiment, sealing ring 1 can coordinate with the sealing of whole sipes section bottom land, certainly also can be only
Coordinate with the sealing of transition connection wall.
In the present embodiment, the sipes section bottom land 222 in two groove side walls is obliquely installed, and sipes section bottom land is away from narrow slot
The part of section notch is higher than near the part of narrow slot section notch.Narrow slot section side wall 241 in two groove side walls from bottom land to
It is located remotely from each other on notch direction and is obliquely installed, so that narrow slot section forms flaring structure.The angle of inclination of sipes section bottom land 222 is α,
The angle of inclination of narrow slot section side wall 241 is α 1, and in the present embodiment, transition connection wall 25 is the arc transition connection wall that radius is R,
The equal arc transition in junction of sipes section bottom land 222 and the junction of sipes section side wall 221, narrow slot section 24 and seal groove bottom land 23,
Transition arc radius are also R, and arc transition design can avoid sealing ring from being scratched.
In the present embodiment, in order to realize better seal effect, make between sealing ring 1 and seal groove 2 with sufficiently large
Sealing area, sipes section groove width W is respectively provided with suitably sized with narrow slot section groove width W1 and sealing groove deep D, narrow slot section groove depth D1.
, less than the diameter of sealing ring lower in a state of nature, and sipes section groove width W is more than locating for narrow slot section groove width W1 in the present embodiment
In the diameter of reset condition lower seal, the height of narrow slot section is more than the height of sipes section, and the height of narrow slot section is more than sipes section
Height can make to be moved in the heart in sealing ring, increase sealing ring in sipes intersegmental part point along groove width direction size.
By limiting sipes section height, narrow slot section height D1, narrow slot section groove width W1, portion of the sealing ring in narrow slot section is made
Divide and be unable to Free Transform, the sealed ring deformation after compression, sealing ring center moves up so that the sealing ring after compression is in width
Size of the part in groove section along groove width direction increases, and increases sealing ring quantity and the contact area with seal groove, while also increasing
Big contact area of the cover closing member 3 with sealing ring.
When in use, sealing ring 1 is pressed in seal groove 2 gas sealing structure of the present invention in the presence of cover closing member 3,
Because narrow slot section side wall 221 is obliquely installed, sealing ring 1 is limited in narrow slot section 24 by narrow slot section side wall 221 is unable to Free Transform,
The centrally directed direction of seal groove notch 21 for making sealing ring 1 is moved, and sealing ring is moved in the heart, and increase sealing ring 1 is in sipes section
The size along groove width direction in 221, and then increase the sealing surface area that circle 1 and cover closing member 3 are removed in sealing.Make sealing ring 1 with it is close
The cooperation in sealing contact of transition connection wall 25 in envelope groove sidewall, under the effect of cover closing member pressure, seal groove is by lateral gas
After pressure, will not be separated with the transition connection wall in one of groove side wall in two groove side walls, it is ensured that hermetic seal is imitated
Fruit and guarantee sealing effectiveness.
The present invention takes full advantage of the own characteristic of seal groove, makes the sealing ring after being compressed by the shadow of seal groove grooved
Ring, move on sealing grooved heart height, the sealing ring part in sipes section is increased with the contact area of cover closing member, narrow slot section passes through
Grooved controls the deformation of sealing ring, and sealing ring can be made to be brought into close contact with narrow slot section, increases sealing ring and sealing ring sealing surface number
Amount, increases sealing surface area, so as to ensure leakage rate per year below 0.1%.
In other embodiment, sipes section bottom land can be arranged in parallel with seal groove bottom land；Above-mentioned narrow slot section side wall can be with
It is vertically arranged with seal groove bottom land；The distance between above-mentioned two narrow slot section side walls being oppositely arranged can be equal to or slightly larger than
The diameter of lower seal in a state of nature, the height of above-mentioned narrow slot section can also be equal to or less than the height of sipes section,
Now in order to ensure sealing effectiveness, the height of seal groove should be reduced so that sealing ring is close with the transition connection wall in groove side wall
Envelope coordinates；Above-mentioned O-ring seal can also be the other types sealing rings such as D types.
Claims (6)
1. gas sealing structure, including seal groove, cover closing member and the sealing ring being arranged in seal groove, it is characterised in that：It is described
Seal groove cross section for T-shaped, it is described including the sipes section near seal groove notch and the narrow slot section near seal groove bottom land
Two narrow slot section side walls and sipes section bottom land between be provided with transition connection wall, described sealing ring and cover closing member, seal groove bottom land,
Two transition connection wall compression fits with realize sealing.
2. gas sealing structure according to claim 1, it is characterised in that：Described sipes section bottom land is obliquely installed, wide
Groove section bottom land is in the part away from narrow slot section notch higher than near the part of narrow slot section notch.
3. gas sealing structure according to claim 1 and 2, it is characterised in that：Two narrow slot section sidewall slopes arrange so that
Narrow slot section forms flaring structure.
4. gas sealing structure according to claim 1 and 2, it is characterised in that：Between two described narrow slot section side walls
Distance is less than size of the sealing ring in a state of nature along narrow slot section groove width direction.
5. gas sealing structure according to claim 1 and 2, it is characterised in that：The height of described sipes section is less than narrow
The height of groove section.
6. gas sealing structure according to claim 1 and 2, it is characterised in that：Described sealing ring is O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129699.7A CN106641263A (en) | 2016-12-09 | 2016-12-09 | Air seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129699.7A CN106641263A (en) | 2016-12-09 | 2016-12-09 | Air seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106641263A true CN106641263A (en) | 2017-05-10 |
Family
ID=58824863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611129699.7A Pending CN106641263A (en) | 2016-12-09 | 2016-12-09 | Air seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641263A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442042A (en) * | 2018-10-19 | 2019-03-08 | 杭州加包装技术有限责任公司 | A kind of mechanical part gas sealing structure under the environment for powder |
| CN112039013A (en) * | 2020-08-25 | 2020-12-04 | 广东电网有限责任公司广州供电局 | Distribution system, distribution cable and intermediate joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519733U (en) * | 1991-08-26 | 1993-03-12 | 三菱電線工業株式会社 | Sealing device for rotary actuator |
| CN2613647Y (en) * | 2003-05-09 | 2004-04-28 | 西安理工大学 | Vacuum seal device for preventing leakage |
| CN201166119Y (en) * | 2008-01-25 | 2008-12-17 | 贾宪宝 | Piston seal parts |
| CN101387344A (en) * | 2008-10-23 | 2009-03-18 | 津伦（天津）精密机械股份有限公司 | Seal structure design method for narrow sealing plane box parts with complex shape |
| CN201788884U (en) * | 2010-08-27 | 2011-04-06 | 山东泰开高压开关有限公司 | Gas seal groove |
| CN204004389U (en) * | 2014-08-13 | 2014-12-10 | 上海共和真空技术有限公司 | The seal ring that is used for the freeze-drying tank of freeze dryer |
-
2016
- 2016-12-09 CN CN201611129699.7A patent/CN106641263A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519733U (en) * | 1991-08-26 | 1993-03-12 | 三菱電線工業株式会社 | Sealing device for rotary actuator |
| CN2613647Y (en) * | 2003-05-09 | 2004-04-28 | 西安理工大学 | Vacuum seal device for preventing leakage |
| CN201166119Y (en) * | 2008-01-25 | 2008-12-17 | 贾宪宝 | Piston seal parts |
| CN101387344A (en) * | 2008-10-23 | 2009-03-18 | 津伦（天津）精密机械股份有限公司 | Seal structure design method for narrow sealing plane box parts with complex shape |
| CN201788884U (en) * | 2010-08-27 | 2011-04-06 | 山东泰开高压开关有限公司 | Gas seal groove |
| CN204004389U (en) * | 2014-08-13 | 2014-12-10 | 上海共和真空技术有限公司 | The seal ring that is used for the freeze-drying tank of freeze dryer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442042A (en) * | 2018-10-19 | 2019-03-08 | 杭州加包装技术有限责任公司 | A kind of mechanical part gas sealing structure under the environment for powder |
| CN109442042B (en) * | 2018-10-19 | 2023-10-31 | 杭州加一包装技术有限责任公司 | Mechanical part gas sealing structure used in powder environment |
| CN112039013A (en) * | 2020-08-25 | 2020-12-04 | 广东电网有限责任公司广州供电局 | Distribution system, distribution cable and intermediate joint |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |