CN200968418Y - Self-sealing packing apparatus - Google Patents
Self-sealing packing apparatus Download PDFInfo
- Publication number
- CN200968418Y CN200968418Y CN 200620108723 CN200620108723U CN200968418Y CN 200968418 Y CN200968418 Y CN 200968418Y CN 200620108723 CN200620108723 CN 200620108723 CN 200620108723 U CN200620108723 U CN 200620108723U CN 200968418 Y CN200968418 Y CN 200968418Y
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- CN
- China
- Prior art keywords
- ring
- sealing
- shape ring
- end socket
- self
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- Expired - Fee Related
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Abstract
An auto compact sealing device comprises a cylinder, a head and a support plate. The head is fixed in the cylinder, the sealing groove is fixed between internal wall of the cylinder and the bottom groove of the head, the sealing ring is fixed in sealing groove, interference fit is obtained between sealing ring and the sealing groove, support plate is fixed in lower sealing groove, the support plate and the head is connected by stationary, the sealing ring comprises nonmetallic C shaped ring and metal C shaped ring, metal C shaped ring is nested in inner layer. The utility model provides an auto compact sealing device with good elastic, long service life and small retightening sealing force.
Description
(1) technical field
The utility model relates to a kind of self-tightening sealing device that is applicable to the High Temperature High Pressure field of sealing technology.
(2) background technique
Self-tightening sealing device is used very extensive as C shape ring seal arrangement in the High Temperature High Pressure field of sealing technology of industries such as oil, chemical industry and medicine.
The sealing of existing C shape ring is main to divide two types: metal C shape ring and nonmetal C shape ring.What wherein be used for the self-tightening sealing of High Temperature High Pressure occasion mainly is metal C shape ring, this C shape ring sealing configuration needs bigger pretension sealing force, promptly must make sealing surface produce surrender and just can reach initial sealing, simultaneously metal C shape ring requirement on machining accuracy is very high, and C shape ring surface defective such as cut promptly can occur and can't continue to use after dismounting repeatedly.The sealing of nonmetal C shape ring has good springiness, realizes advantages such as pre-tightening seal easily, but under serviceability, when pressure was higher, nonmetal C shape ring damaged, therefore inapplicable occasion in High Temperature High Pressure easily because of strength deficiency.And the anti-medium osmosis of nonmetallic material and corrosivity are generally relatively poor.
For the metal C shape ring seal arrangement of High Temperature High Pressure field of sealing technology, the shortcoming of existence: required pretension sealing force is big, working life is shorter.
(3) summary of the invention
For the deficiency that the required pretension sealing force that overcomes existing self-tightening sealing device is big, working life is short, the utility model provides that a kind of good springiness, required pretension sealing force are less, the self-tightening sealing device of long service life.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of self-tightening sealing device, comprise shell, end socket, supporting plate, described end socket is installed in the cylindrical shell, be seal groove between the groove of described cylinder inboard wall and end socket bottom surface, described seal ring is installed in the seal groove, described seal ring and seal groove interference fit, supporting plate is installed in the seal groove lower end, supporting plate is fixedlyed connected with end socket, and the sealing ring is made up of nonmetal C shape ring and metal C shape ring, the nested metal C of the internal layer shape ring of nonmetal C shape ring.
Further, the breach of described seal ring is the downside at ring, and described breach direction is consistent with axial direction.
Further again, described supporting plate is socketed in the end socket lower end, and the section of stretching out of end socket lower end is provided with outside thread, overlaps connected nut on the described outside thread.
Adopt the C shape ring of metal and nonmetal combination, promptly encircle the nested metal C shape of internal layer at nonmetal C shape ring, the sealing ring is installed in the rectangular seal groove, and the breach of seal ring is at next that encircles, and described breach direction is consistent with axial direction.When pre-tightening seal, under little sealing force effect, mainly, fill the rough groove on the sealing surface by means of the resiliently deformable of the nonmetal C shape ring of skin, realize initial sealing.Under serviceability, when working pressure increased, pressure acted on the internal surface of metal C shape ring, made C shape ring produce dilatating and deformable, had remedied the distortion of pressure effect lower sealing device, made to keep required seal pressure under the serviceability on the sealing surface.Along with pressure raises, the power of internal surface that acts on metal C shape ring is big more, reaches the self-tightening sealing purpose.
The beneficial effects of the utility model mainly show: 1, the pretightening force of Xu Yaoing is less: outer nonmetal C shape ring resilience is better, under little pretightening force effect, produce distortion, realize initial sealing, therefore can avoid using thick kingbolt etc. that the part of sealing force is provided; 2, long service life.This complex sealing ring has overcome simple metal C shape ring in the shortcoming of damaging sealing surface after dismounting repeatedly easily, and outer nonmetal C shape ring can recover original form after release, can use repeatedly, and being applicable to needs the often quick-opening structure of mounting or dismounting; 3,, heat resisting and pressure resisting ability height: advantages such as the metal C shape of internal layer ring contacts with medium, has the intensity height, and heatproof and dielectric corrosion ability are strong, serviceability temperature can reach 300 ℃, pressure can reach 35MPa; 4, requirement on machining accuracy is low: outer nonmetal C shape ring easy deformation under the pretightening force effect, so the sealing surface requirement on machining accuracy can be lower than simple employing metal C shape ring.
(4) description of drawings
Fig. 1 is the structural representation of self-tightening sealing device.
Fig. 2 is the structural representation of C shape ring.
(5) embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, Fig. 2, a kind of self-tightening sealing device, comprise shell 1, end socket 2, supporting plate 5, described end socket 2 is installed in the cylindrical shell 1, between the groove of described cylindrical shell 1 inwall and end socket 2 bottom surfaces is seal groove, described seal ring is installed in the seal groove, described seal ring and seal groove interference fit, supporting plate 5 is installed in the seal groove lower end, supporting plate 5 is fixedlyed connected with end socket 2, the sealing ring is made up of nonmetal C shape ring 3 and metal C shape ring 4, the nested metal C of the internal layer shape ring 4 of nonmetal C shape ring 3.
The breach of described seal ring is the downside at ring, and described breach direction is consistent with axial direction.Described supporting plate 5 is socketed in the end socket lower end, and the section of stretching out of end socket lower end is provided with outside thread, cover connected nut 6 on the described outside thread.
When pre-tightening seal, under little sealing force effect, mainly, fill the rough groove on the sealing surface by means of the resiliently deformable of the nonmetal C shape ring 3 of skin, realize initial sealing.Under serviceability, when working pressure increased, pressure acted on the internal surface of metal C shape ring 4, made C shape ring produce dilatating and deformable, had remedied the distortion of pressure effect lower sealing device, made to keep required seal pressure under the serviceability on the sealing surface.Along with pressure raises, the power of internal surface that acts on metal C shape ring 4 is big more, reaches the self-tightening sealing purpose.
Claims (3)
1, a kind of self-tightening sealing device, comprise shell, end socket, supporting plate, described end socket is installed in the cylindrical shell, be seal groove between the groove of described cylinder inboard wall and end socket bottom surface, described seal ring is installed in the seal groove, described seal ring and seal groove interference fit, supporting plate is installed in the seal groove lower end, supporting plate is fixedlyed connected with end socket, it is characterized in that: the sealing ring is made up of nonmetal C shape ring and metal C shape ring, the nested metal C of the internal layer shape ring of nonmetal C shape ring.
2, self-tightening sealing device as claimed in claim 1 is characterized in that: the breach of described seal ring is the downside at ring, and described breach direction is consistent with axial direction.
3, self-tightening sealing device as claimed in claim 1 or 2 is characterized in that: described supporting plate is socketed in the end socket lower end, and the section of stretching out of end socket lower end is provided with outside thread, overlaps connected nut on the described outside thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108723 CN200968418Y (en) | 2006-10-18 | 2006-10-18 | Self-sealing packing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620108723 CN200968418Y (en) | 2006-10-18 | 2006-10-18 | Self-sealing packing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968418Y true CN200968418Y (en) | 2007-10-31 |
Family
ID=38967989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620108723 Expired - Fee Related CN200968418Y (en) | 2006-10-18 | 2006-10-18 | Self-sealing packing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200968418Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9797513B2 (en) | 2010-09-09 | 2017-10-24 | Technetics Group Llc | Annular sealing device |
-
2006
- 2006-10-18 CN CN 200620108723 patent/CN200968418Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9797513B2 (en) | 2010-09-09 | 2017-10-24 | Technetics Group Llc | Annular sealing device |
| US10598284B2 (en) | 2010-09-09 | 2020-03-24 | Technetics Group Llc | Annular sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20101018 |