CN200946479Y - Convenient self tightened sealer - Google Patents
Convenient self tightened sealer Download PDFInfo
- Publication number
- CN200946479Y CN200946479Y CN 200620077845 CN200620077845U CN200946479Y CN 200946479 Y CN200946479 Y CN 200946479Y CN 200620077845 CN200620077845 CN 200620077845 CN 200620077845 U CN200620077845 U CN 200620077845U CN 200946479 Y CN200946479 Y CN 200946479Y
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- CN
- China
- Prior art keywords
- rubber seal
- sealing device
- sealing ring
- rubber sealing
- semi
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- Expired - Lifetime
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Abstract
The utility model discloses a convenient self-energizing sealing device, which comprises essentially rubber sealing ring (3) and open elastic metallic support rings (2), wherein rubber sealing ring (3) is mounted between sleeve (5) and casing (1); two open elastic metallic support rings (2) are mounted at upper and lower parts of inner hole of rubber sealing ring (3); internal circle surface of cross section of rubber sealing ring (3) has semicircular hill (6) while the external circle surface has semicircular recess (7), area of semicircular hill (6) of the internal circle surface being larger than that of semicircular recess (7) of the external circle surface. The utility model establishes primary low pressure seal with assembling magnitude of interference and high pressure seal with assistance of high pressure fluid in oil-gas wells which stimulates deformation of the rubber sealing ring. Without foreign help, the utility model is a bidirectional self-energizing sealing device with simple structure and convenient operation.
Description
Technical field
The utility model relates to a kind of convenient self-tightening sealing device, is used to seal the annular space that is formed by sleeve pipe and casing head or sleeve pipe and tubing head housing.
Background technology
Present known casing head, four-way junction of casing, oil pipe four-way housing and sleeve pipe be sealed into a kind of its swash sealing, promptly utilizing the injection moulding rifle to inject high pressure sealing fat in the rubber seal cavity excites sealing ring and sleeve pipe to fit tightly the foundation sealing, this sealing means should be by the high-pressure injection moulding device of special use, use special-purpose stop-leak compound again, complex operation, working strength is big, and efficient is low.
Summary of the invention
The purpose of this utility model is: a kind of convenient self-tightening sealing device is provided, solves the deficiency that it swashs sealing, utilize oil gas well inner high voltage fluid to excite sealing, simple in structure, easy to operate, sealing is reliable.
The scheme of the utility model technical solution problem is: the sealing device mainly is made up of rubber seal, metallic elastic opening support ring, and two metallic elastic opening support rings are installed on the up/down steps face of rubber seal endoporus forms sealing device; Annular space in sleeve pipe and housing formation is installed rubber seal, and two metallic elastic opening support rings are installed on the up/down steps face of rubber seal endoporus; Wherein, the inner headed face of rubber seal ring cross-section has a semi-cylindrical hill, the periphery of rubber seal ring cross-section has a semi-circular recesses, and the semi-cylindrical hill area of inner headed face is greater than the semi-circular recesses area of periphery, the existing certain tolerant space of rubber seal is convenient to install when making installation, keeps certain magnitude of interference again.
During installation, there is certain magnitude of interference between sleeve pipe and the rubber seal, utilize the magnitude of interference between rubber seal and the sleeve pipe to set up low pressure seal, rising along with oil gas borehole fluid pressure, high-pressure fluid acts on the rubber seal, and pressure forces sealing ring generation deformation, and circle semi-cylindrical hill and sleeve pipe are fitted closelyr in the rubber seal, rubber seal periphery and housing fitting face also fit tightly, and form reliable high pressure sealing.
The utlity model has following advantage: 1, this rubber seal is when the interference assembling of sleeve pipe and rubber seal, and rubber has certain compression stroke, installs easily, has also guaranteed to have certain pretightning force after the assembling of sleeve pipe and rubber seal; 2, the stressed back of rubber seal internal diameter shrinks, extrusion metal elastic opening support ring shrinks, and centering is held sleeve pipe tightly, can not locate to be extruded destruction between housing and sleeve pipe annular space after making rubber seal because of compressive deformation, therefore, metallic elastic opening support ring has played the centering protective effect; 3, this kind sealing device is to utilize oil gas well inner high voltage fluid to excite sealing, need not excite sealing to be a kind of two-way self-tightening sealing device by external strength, and is simple in structure, easy to operate.
Description of drawings
Fig. 1 is an assembling schematic diagram of the present utility model.
Among the figure: 1. upper shell, 2. metallic elastic opening support ring, 3. rubber seal, 4. lower house, 5. sleeve pipe, 6. semi-cylindrical hill, 7. semi-circular recesses.
The specific embodiment
As shown in Figure 1, the sealing device mainly is made up of rubber seal 3, metallic elastic opening support ring 2, and two metallic elastic opening support rings 2 are installed on the up/down steps face of rubber seal 3 endoporus forms sealing device; At sleeve pipe 5 and the annular space that housing 1 forms rubber seal 3 is installed, two metallic elastic opening support rings 2 are installed on the up/down steps face of rubber seal 3 endoporus; Wherein, the inner headed face in rubber seal 3 cross sections has a semi-cylindrical hill 6, and the periphery of rubber seal 3 has a semi-circular recesses 7, and semi-cylindrical hill 6 areas of inner headed face are greater than semi-circular recesses 7 areas of periphery.
After the assembling, there is certain magnitude of interference in sleeve pipe 5 with rubber-type sealing ring 3, also there is certain magnitude of interference in upper shell 1 with the cylindrical cooperation place of rubber seal 3, borehole fluid enters the C place ring surface of rubber seal 3 from A, fluid pressure action is in C place ring surface, rubber seal 3 longitudinal size that is squeezed is shortened, and lateral dimension increases, and the endoporus semi-cylindrical hill 6 of rubber seal 3 is held sleeve pipe 5 tightly; Simultaneously, upper shell 1 fits tightly with the periphery of rubber seal 3, thereby realizes high pressure sealing, and fluid just can not be scurried the annular space of upper shell 1 and sleeve pipe 5 from the lower house 4 and the annular space of sleeve pipe 5.In like manner, if fluid also can be set up high pressure sealing from the D place ring surface that B enters rubber seal 3.If A place, B place all have fluid pressure to exist, fluid pressure will act on C place, the D place ring surface of rubber seal 3 respectively, then more help the distortion of rubber seal 3, also can set up high pressure sealing, the annular space of lower house 4 and sleeve pipe 5 and upper shell 1 are cut off channelling mutually with the fluid of the annular space of sleeve pipe 5.
Because the tolerance of sleeve pipe 5 cylindricals is bigger; there is certain clearance at upper shell 1 and 5 of sleeve pipes; when rubber seal 3 compressive deformations; a part of rubber of rubber seal 3 may be extruded from the gap of upper shell 1 and sleeve pipe 5 and destroy; rubber seal 3 stressed back internal diameters shrink 2 contractions of extrusion metal elastic opening support ring and hold sleeve pipe 5 tightly; make rubber seal 3 because of can between the annular space of upper shell 1 and sleeve pipe 5, not locating squeeze and destroy behind the compressive deformation; metallic elastic opening support ring 2 has played the centering protective effect, also increases the rigidity and the high pressure sealing performance of rubber seal 3 simultaneously.
Claims (4)
1. convenient self-tightening sealing device, it is characterized in that: the sealing device mainly is made up of rubber seal (3), metallic elastic opening support ring (2), and the step surface that two metallic elastic opening support rings (2) are installed in rubber seal (3) endoporus upper and lower forms sealing device.
2. convenient self-tightening sealing device according to claim 1, it is characterized in that: the annular space in sleeve pipe and housing formation is installed rubber seal (3), and a metallic elastic opening support ring (2) respectively is installed on the up/down steps face of rubber seal (3) endoporus.
3. convenient self-tightening sealing device according to claim 1 and 2 is characterized in that: wherein, the inner headed face in rubber seal (3) cross section has a semi-cylindrical hill (6), and the periphery of rubber seal (3) has a semi-circular recesses (7).
4. convenient self-tightening sealing device according to claim 3 is characterized in that: the semi-cylindrical hill of the inner headed face of rubber seal (6) area is greater than semi-circular recesses (7) area of periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077845 CN200946479Y (en) | 2006-09-22 | 2006-09-22 | Convenient self tightened sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077845 CN200946479Y (en) | 2006-09-22 | 2006-09-22 | Convenient self tightened sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200946479Y true CN200946479Y (en) | 2007-09-12 |
Family
ID=38733539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620077845 Expired - Lifetime CN200946479Y (en) | 2006-09-22 | 2006-09-22 | Convenient self tightened sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200946479Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958398A (en) * | 2019-04-26 | 2019-07-02 | 昆山艾蓓蓓阀门有限公司 | A kind of four-way bobbin seal structure applied to oil well |
-
2006
- 2006-09-22 CN CN 200620077845 patent/CN200946479Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958398A (en) * | 2019-04-26 | 2019-07-02 | 昆山艾蓓蓓阀门有限公司 | A kind of four-way bobbin seal structure applied to oil well |
| CN109958398B (en) * | 2019-04-26 | 2024-05-07 | 昆山艾蓓蓓阀门有限公司 | Four-way sleeve sealing structure applied to oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Jinshi Machinery Group Co., Ltd. Assignor: Jin Petroleum Gas Wellhead Science and Technology Co., Ltd., Jiangsu Contract record no.: 2010320000122 Denomination of utility model: Convenient self tightened sealer Granted publication date: 20070912 License type: Exclusive License Record date: 20100224 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070912 |
|
| EXPY | Termination of patent right or utility model |