CN2272941Y - Borehole thermal recovery compensator - Google Patents
Borehole thermal recovery compensator Download PDFInfo
- Publication number
- CN2272941Y CN2272941Y CN 96248152 CN96248152U CN2272941Y CN 2272941 Y CN2272941 Y CN 2272941Y CN 96248152 CN96248152 CN 96248152 CN 96248152 U CN96248152 U CN 96248152U CN 2272941 Y CN2272941 Y CN 2272941Y
- Authority
- CN
- China
- Prior art keywords
- outer tube
- seal assembly
- thermal recovery
- expansion loop
- sealing
- 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.)
- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a borehole thermal recovery compensator, which comprises an inner and an outer tubes, a sealing assembly, and an upper and a lower joints. Both the upper and the lower joints are provided with screw threads for a thermal insulating tube; one end of the inner tube is connected with the sealing assembly; the sealing assembly and the inner column surface of the outer tube form a sliding seal, the inner tube and the sealing assembly can be slid together in the outer tube, and the other end of the inner tube is connected with the upper joint; the upper end of the outer tube is connected with a screw cap, and the lower end is connected with the lower joint. The compensator has the advantages that the sealing structure is simple, sealing surfaces can not be damaged easily, and sealing members can be replaced easily.
Description
The utility model relates to the expansion compensation device that a kind of pipeline is used, particularly a kind of oil field down-hole thermal recovery expansion loop.
Existing down-hole thermal recovery expansion loop, form by inner and outer pipe, seal assembly, upper and lower joint etc., seal assembly and outer tube are linked together, form sealing between the inner and outer pipe by seal assembly and interior pipe external cylindrical surface, interior pipe is sliding extension in outer tube and seal assembly, and this structure one is the seal assembly complex structure, the 2nd, because of the outside cylinder of interior pipe is a sealing surface, be exposed to appearance and easily damage and cause seal failure, or being difficult to repair secondary uses, and directly increases thermal recovery well recovery cost.
The purpose of this utility model is at above-mentioned the deficiencies in the prior art part; a kind of down-hole thermal recovery expansion loop is provided; this expansion loop forms slipper seal by seal assembly and outer tube inner cylinder face; thereby protected sealing surface not collided and damaged; increased the reliability of sealing; improved repeat usage, and hermetically-sealed construction is simple, it is easy to change seal.
The utility model is achieved through the following technical solutions: this down-hole thermal recovery expansion loop, comprise inner and outer pipe, seal assembly, upper and lower joint, interior Guan Yiduan and seal assembly link, seal assembly and outer tube inner cylinder face form slipper seal, and interior pipe can slide in outer tube with seal assembly.The interior pipe other end connects top connection, and the outer tube upper end links to each other with a nut, and the lower end links to each other with lower contact.This expansion loop forms slipper seal by seal assembly and outer tube inner cylinder face; thereby protected sealing surface not collided and damaged; increased the reliability of sealing; improved repeat usage, the outer tube upper end links to each other with nut, the seal assembly that the pipe lower end connected in nut can stop; prevent that it from deviating from outer tube; and pulling force passed to outer tube by interior pipe, can compensate the thermal stretching that is subjected to of instlated tubular effectively, but and transfer torque.
The utility model compared with prior art has following advantage: the seal assembly of this down-hole thermal recovery expansion loop is made up of piston and its peripheral sealing ring, and is simple in structure; Seal assembly and outer tube inner cylinder face form slipper seal, and interior pipe and seal assembly can slide in outer tube together.The outer tube inner cylinder face is as sealing surface like this, and is not fragile, and it is easy to change seal.
Accompanying drawing 1 is the overall structure schematic diagram of down-hole thermal recovery expansion loop.
Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail: a kind of down-hole thermal recovery expansion loop, pipe 3, outer tube 4, seal assembly 8, top connection 1, lower contact 7 in comprising, all have the instlated tubular screw thread in top connection 1, the lower contact 7, interior pipe 3 one ends are connected with seal assembly 8, seal assembly 8 forms slipper seal with outer tube 4 inner cylinder faces, in pipe 3 can in outer tube 4, slide with seal assembly 8, interior pipe 3 other ends connect top connection 1, outer tube 4 upper ends link to each other with a nut 3, and the lower end links to each other with lower contact 7.Seal assembly 8 is made up of piston 5 and sealing ring 6, and sealing ring 6 is in piston 5 peripheries.Sealing ring 6 is metal hollow O type circle or the metallic piston rings that rise, and also can be that high-temperature resistant rubber or other high temperature resistant nonmetal encapsulant are made.Interior pipe 3 one ends are connected with piston 5, sealing ring 6 is arranged on the piston 5, piston 5 and interior pipe 3 are inserted the inner cylinder face of outer tube 4 inner carriers 5 by the sealing ring on it 6 and outer tube 4 together form slipper seal, the inner cylinder face with outer tube 4 is a sealing surface like this, is not subject to collision and damages.Increase the reliability of sealing, improved repeat usage.Because of outer tube 4 upper ends link to each other with nut 2, the piston 5 of pipe on 3 in nut 2 can stop prevents that it from deviating from outer tube 4 when upwards sliding, and pulling force passed to outer tube 4 by interior pipe 3, thereby effectively compensate the thermal stretching that is subjected to of instlated tubular, but and transfer torque.
Claims (3)
1, a kind of down-hole thermal recovery expansion loop, comprise inner and outer pipe, seal assembly, upper and lower joint, upper and lower connecting all has the instlated tubular screw thread, Guan Yiduan is connected with seal assembly in it is characterized in that, seal assembly and outer tube inner cylinder face form slipper seal, and interior pipe can slide in outer tube with seal assembly, and the interior pipe other end connects top connection, the outer tube upper end links to each other with a nut, and the lower end links to each other with lower contact.
2, thermal recovery expansion loop in down-hole according to claim 1 is characterized in that seal assembly is made up of piston and sealing ring, and sealing ring is positioned at the piston periphery.
3, thermal recovery expansion loop in down-hole according to claim 1 and 2 is characterized in that sealing ring is metal hollow O type circle or the metallic piston ring that rises, and also can be that high-temperature resistant rubber or other high temperature resistant nonmetal encapsulant are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248152 CN2272941Y (en) | 1996-10-21 | 1996-10-21 | Borehole thermal recovery compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248152 CN2272941Y (en) | 1996-10-21 | 1996-10-21 | Borehole thermal recovery compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2272941Y true CN2272941Y (en) | 1998-01-21 |
Family
ID=33920084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96248152 Expired - Fee Related CN2272941Y (en) | 1996-10-21 | 1996-10-21 | Borehole thermal recovery compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2272941Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297308A (en) * | 2011-08-03 | 2011-12-28 | 冯亿生 | practical telescopic device |
| CN102312667A (en) * | 2011-09-23 | 2012-01-11 | 中国石油天然气股份有限公司 | Concentric Tube Layered Steam Injection System and Method |
| CN104632162A (en) * | 2013-11-11 | 2015-05-20 | 盐城市华谊石油机械有限公司 | Thermal expansion compensator |
| CN109854208A (en) * | 2019-02-14 | 2019-06-07 | 郑家远 | A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop |
-
1996
- 1996-10-21 CN CN 96248152 patent/CN2272941Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297308A (en) * | 2011-08-03 | 2011-12-28 | 冯亿生 | practical telescopic device |
| CN102312667A (en) * | 2011-09-23 | 2012-01-11 | 中国石油天然气股份有限公司 | Concentric Tube Layered Steam Injection System and Method |
| CN104632162A (en) * | 2013-11-11 | 2015-05-20 | 盐城市华谊石油机械有限公司 | Thermal expansion compensator |
| CN109854208A (en) * | 2019-02-14 | 2019-06-07 | 郑家远 | A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |