CN201908608U - Fixing and sealing structure of wellhead device - Google Patents
Fixing and sealing structure of wellhead device Download PDFInfo
- Publication number
- CN201908608U CN201908608U CN2010206910718U CN201020691071U CN201908608U CN 201908608 U CN201908608 U CN 201908608U CN 2010206910718 U CN2010206910718 U CN 2010206910718U CN 201020691071 U CN201020691071 U CN 201020691071U CN 201908608 U CN201908608 U CN 201908608U
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- seal
- fixing
- combination body
- ring
- split ring
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- Expired - Fee Related
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Abstract
The utility model discloses a fixing and sealing structure of a wellhead device. The fixing and sealing structure comprises a tubular sealing combination body and a fixing structure and is characterized in that the lower part of the sealing combination body is provided with an inner seal ring and an outer seal ring, an anti-rotation pin matched with a pipeline to be sealed is arranged on the sealing combination body, and the tail end of the anti-rotation pin is provided with a spring; and in the fixing structure, a split ring installation slot is peripherally arranged on the outer wall of the sealing combination body, and an elastic split ring is clamped in the split ring installation slot. In the utility model, due to the adoption of the split ring, the fixing and sealing structure is fixed with an outer pipe fitting through the elasticity of the split ring; no jackscrew is provided in the design, and leak points are reduced; and the connection strength of a flange is not lowered, therefore, a higher safety is provided for equipment.
Description
Technical field
The utility model relates to a kind of wellhead equipment, is specifically related to a kind of fixing seal structure of wellhead assembly.
Background technology
Conventional well head adopts jackscrew to fix seal combination, because jackscrew quantity is more, thereby the wellhead equipment leak point increases, and causes the possibility that fluid is revealed in on-the-spot drillng operation and the later stage manufacturing process to increase; Owing to processing some top wire holes on the flange or on the body, directly reduce the intensity of adpting flange or body simultaneously, cause in the use easily and lost efficacy, cause the generation of accident.
Summary of the invention
The utility model purpose provides a kind of fixing seal structure of wellhead assembly, and increase the leak point of avoiding adopting jackscrew fixedly to cause.
For achieving the above object, the technical solution adopted in the utility model is: a kind of fixing seal structure of wellhead assembly, the seal combination body and the fixed structure that comprise tubulose, described seal combination body bottom is provided with inner seal ring and exterior seal ring, the seal combination body is provided with the anti-rotation pin that cooperates with pipeline to be sealed, and anti-rotation pin tail end is provided with spring; Described fixed structure is, circumferentially is provided with the split ring mounting groove on the outer wall of seal combination body, is arranged with elastic opening ring in the split ring mounting groove.
In the technique scheme, described seal combination body is a split-type structural, is made of first body and second body, and the described first body lower end outer wall cooperates with second body upper end inwall, constitutes rotatable connection through cyclic adapting piece; Described inner seal ring and exterior seal ring are located on second body, and described fixed structure and anti-rotation pin are located on first body.Constitute rotary-type fixing seal structure thus.
Perhaps, described seal combination body is an integral structure, and described anti-rotation pin is located at seal combination body bottom.Constitute non-rotating type fixing seal structure thus.
In the technique scheme, be respectively equipped with 2 inner seal rings and 2 exterior seal rings.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. the utility model utilizes the elasticity of split ring and outer tube to fix by split ring is set, and this designs no jackscrew, has reduced the leak point, and the flange bonding strength does not reduce, and can provide equipment higher safety.
2. inner seal ring of the present utility model can be sealed polished surface, also direct Sealed casing pipe.
3. split ring can adopt suitable flexible material in circumferentially fluting, perforate, guarantees that from structure and material two aspects split ring elasticity is moderate, only needs very little moment of torsion to get final product when the operation special tool, in particular cases, manually also snap ring can be shunk.
Description of drawings
Fig. 1 is the utility model embodiment one structure cross-sectional schematic (omission hatching).
Fig. 2 is the utility model embodiment two structure cross-sectional schematic (omission hatching).
Wherein: 1, seal combination body; 2, split ring; 3, spring; 4, anti-rotation pin; 5, first body; 6, second body; 7, cyclic adapting piece; 8, exterior seal ring; 9, inner seal ring.
The specific embodiment
Below in conjunction with figure and embodiment the utility model is further described:
Embodiment one: referring to shown in Figure 1, a kind of fixing seal structure of wellhead assembly, the seal combination body and the fixed structure that comprise tubulose, described seal combination body is a split-type structural, constitute by first body 5 and second body 6, described first body, 5 lower end outer walls cooperate with second body, 6 upper end inwalls, constitute rotatable connection through cyclic adapting piece 7; Second body 5 of described seal combination is provided with 2 inner seal rings 9 and 2 exterior seal rings 8, and first body, 5 bottoms of seal combination are provided with the anti-rotation pin 4 that cooperates with pipeline to be sealed, and anti-rotation pin 4 tail ends are provided with spring 3; Described fixed structure is, circumferentially is provided with the split ring mounting groove on the outer wall of black box first body 5, is arranged with elastic opening ring 2 in the split ring mounting groove.
Present embodiment is furnished with special tool, before installation, instrument links together by screw top and seal combination, when further screwing, instrument compression slotted openings ring, split ring is contracted in the body openings annular groove, be lowered in the wellhead assembly after, the anti-rotation of seal combination pin is stuck in the groove of its obturator, the reverse rotation instrument, extraction tool, the fluting snap ring opens under self elastic force effect, thereby fixes seal combination.
Embodiment two: referring to shown in Figure 2, a kind of fixing seal structure of wellhead assembly, the seal combination body 1 and the fixed structure that comprise tubulose, described seal combination body 1 is an integral structure, seal combination body 1 bottom is provided with 2 inner seal rings 9 and 2 exterior seal rings 8, the bottom is provided with the anti-rotation pin 4 that cooperates with pipeline to be sealed, and anti-rotation pin 4 tail ends are provided with spring 3; Described fixed structure is, circumferentially is provided with the split ring mounting groove on the outer wall of seal combination body 1, is arranged with elastic opening ring 2 in the split ring mounting groove.
Present embodiment also can cooperate special tool to install, and its mounting method is identical with embodiment one.
Claims (4)
1. the fixing seal structure of a wellhead assembly, the seal combination body and the fixed structure that comprise tubulose, it is characterized in that: described seal combination body bottom is provided with inner seal ring and exterior seal ring, the seal combination body is provided with the anti-rotation pin that cooperates with pipeline to be sealed, and anti-rotation pin tail end is provided with spring; Described fixed structure is, circumferentially is provided with the split ring mounting groove on the outer wall of seal combination body, is arranged with elastic opening ring in the split ring mounting groove.
2. the fixing seal structure of wellhead assembly according to claim 1, it is characterized in that: described seal combination body is a split-type structural, constitute by first body and second body, the described first body lower end outer wall cooperates with second body upper end inwall, constitutes rotatable connection through cyclic adapting piece; Described inner seal ring and exterior seal ring are located on second body, and described fixed structure and anti-rotation pin are located on first body.
3. the fixing seal structure of wellhead assembly according to claim 1, it is characterized in that: described seal combination body is an integral structure, described anti-rotation pin is located at seal combination body bottom.
4. according to the fixing seal structure of claim 2 or 3 described wellhead assemblies, it is characterized in that: be respectively equipped with 2 inner seal rings and 2 exterior seal rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206910718U CN201908608U (en) | 2010-12-30 | 2010-12-30 | Fixing and sealing structure of wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206910718U CN201908608U (en) | 2010-12-30 | 2010-12-30 | Fixing and sealing structure of wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908608U true CN201908608U (en) | 2011-07-27 |
Family
ID=44300811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206910718U Expired - Fee Related CN201908608U (en) | 2010-12-30 | 2010-12-30 | Fixing and sealing structure of wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321008A (en) * | 2016-10-20 | 2017-01-11 | 江苏金石机械集团有限公司 | Seal cartridge for correcting casing eccentricity |
-
2010
- 2010-12-30 CN CN2010206910718U patent/CN201908608U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321008A (en) * | 2016-10-20 | 2017-01-11 | 江苏金石机械集团有限公司 | Seal cartridge for correcting casing eccentricity |
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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 |
Granted publication date: 20110727 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |