CN204804703U - Vacuum heat insulation tube - Google Patents
Vacuum heat insulation tube Download PDFInfo
- Publication number
- CN204804703U CN204804703U CN201520415902.1U CN201520415902U CN204804703U CN 204804703 U CN204804703 U CN 204804703U CN 201520415902 U CN201520415902 U CN 201520415902U CN 204804703 U CN204804703 U CN 204804703U
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- CN
- China
- Prior art keywords
- heat insulation
- vacuum heat
- outer tube
- tube
- interior pipe
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Abstract
The utility model provides a vacuum heat insulation tube, it includes inner tube and outer tube, the inner tube is worn to establish in the outer tube, the one end of inner tube with be connected with the support ring between the one end of outer tube, the other end of inner tube with be connected with the clamp ring between the other end of outer tube, the other end outside of outer tube is connected with the coupling. The utility model discloses a vacuum heat insulation tube at long -term steam injection's in -process in succession, can effectively reduce the heat loss of vacuum heat insulation tube coupling department, realizes improving the purpose that the degree was employed to the viscous crude oil reservoir.
Description
Technical field
The utility model has about a kind of instlated tubular, especially has the vacuum heat insulation tube about applying in a kind of heavy crude heat extraction technical field.
Background technology
Liaohe Oilfield Heavy Crude oil reservoir generally buries darker, for mid-deep strata heavy crude reservoir, steam injection string effect of heat insulation is always not ideal enough, and the problems such as steam streams by existing during heat-insulated pipe hooping, seepage and decompression, make heat-insulated pipe hooping place still become vapour and drive one of tubing string main heat sink point.Cause that to inject the steam quality loss of steam in pit shaft comparatively large, the effective latent heat entering oil reservoir reduces, and is unfavorable for the object realizing driving crude oil, easily causes sleeve pipe to be in damage under long term high temperature condition of high voltage and distortion simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of vacuum heat insulation tube, in the long-term process injecting steam continuously, effectively can reduce the heat waste at vacuum heat insulation tube box cupling place, realizes the object improving heavy crude reservoir development degree.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of vacuum heat insulation tube, it comprises inner and outer tubes, described interior pipe is located in described outer tube, support ring is connected with between one end of described interior pipe and one end of described outer tube, be connected with hold-down ring between the other end of described interior pipe and the other end of described outer tube, outside the other end of described outer tube, be connected with box cupling.
In a preferred embodiment, be formed with annular space between described interior pipe and described outer tube, in described annular space, be filled with heat-barrier material.
In a preferred embodiment, described support ring comprises integrated weld part and sealing, and described weld part is welded to connect with described interior pipe, described outer tube respectively, described sealing is arranged with gasket ring and multiple graphite-seal ring.
In a preferred embodiment, described hold-down ring comprises integrated weld part and compressed part, and described weld part is welded to connect with described interior pipe, described outer tube respectively.
In a preferred embodiment, the section of being threaded of described box cupling is buttress thread linkage section.
Feature and the advantage of vacuum heat insulation tube of the present utility model are: this vacuum heat insulation tube has welded support ring and hold-down ring respectively at the two ends of inner and outer tubes, while the box cupling tightening two vacuum heat insulation tubes, the multiple graphite-seal rings on support ring are compressed by hold-down ring, achieve the secondary seal at vacuum heat insulation tube box cupling place, decrease box cupling place steam to stream, the impact of decompression on vapor flow, thus greatly reduce the focus loss at vacuum heat insulation tube box cupling place, guarantee the smooth and easy injection of HTHP wet saturated steam at No leakage and decompression and under the less condition of heat waste, play again the effect ensureing shaft bottom mass dryness fraction simultaneously and reduce casing deformation, effect of protection well cementing casing pipe.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the half sectional view of vacuum heat insulation tube of the present utility model.
Fig. 2 is the half sectional view that two vacuum heat insulation tubes of the present utility model are connected.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of vacuum heat insulation tube, it comprises interior pipe 1 and outer tube 2, described interior pipe 1 is located in described outer tube 2, support ring 3 is connected with between one end of described interior pipe 1 and one end of described outer tube 2, be connected with hold-down ring 4 between the other end of described interior pipe 1 and the other end of described outer tube 2, outside the other end of described outer tube 2, be connected with box cupling 5.
Specifically, interior pipe 1 is substantially in cylinder barrel shaped, and it compensates the different thermal expansion length of interior pipe 1 in process by the method for Shi Hanzhang, to reduce the thermal stress deformation of interior pipe 1 under 350 DEG C of duties.
Outer tube 2 is substantially in cylinder barrel shaped, and it is set in the outside of interior pipe 1, and the two ends of interior pipe 1 are all positioned at outer tube 2.Be formed with annular space 11 between outer tube 2 and interior pipe 1, in the utility model, in annular space 11, be filled with heat-barrier material.This heat-barrier material can be the mixture of the mixture of crushed crude pearlite, aluminium foil and alumina silicate fibre, aluminium foil and aluminium silicate fiber peacekeeping argon gas, the mixture of aluminium foil and silicate fiber and Krypton and the agent of suction hydrogen or the mixture for aluminium foil and glass fiber and Krypton and the agent of suction hydrogen, it has good effect of heat insulation, those heat-barrier materials are that heat-proof quality is according to actual needs selected to determine, this is not restricted.In addition, in annular space 11 after filling with insulation material, process is vacuumized to this annular space 11.
Support ring 3 sealing is arranged on one end of annular space 11, it comprises integrated weld part 31 and sealing 32, the cross section of the support ring 3 that weld part 31 and sealing 32 form is substantially in shape, weld part 31 is folded between interior pipe 1 and outer tube 2, and its two ends are welded to connect with interior pipe 1, outer tube 2 respectively; The internal diameter of sealing 32 is identical with the internal diameter of interior pipe 1, it is arranged with a gasket ring 321 and multiple graphite-seal ring 322.
Hold-down ring 4 sealing is arranged on the other end of annular space 11, it comprises integrated weld part 41 and compressed part 42, the bulge loop 43 of radially-inwardly projection is formed between weld part 41 and compressed part 42, weld part 41 is folded between outer tube 2 and interior pipe 1, and its two ends are welded to connect with interior pipe 1, outer tube 2 respectively; Bulge loop 43 is resisted against on the other end of interior pipe 1, and the internal diameter of compressed part 42 is greater than the internal diameter of interior pipe 1.
Box cupling 5 is threaded in outside the other end of outer tube 2, be also namely connected to be provided with hold-down ring 4 side outer tube 2 on, the section of being threaded of box cupling 5 is buttress thread linkage section, and this section of being threaded stress is good, and sealing performance is strong.
When vacuum heat insulation tube is connected between two, as shown in Figure 2, be positioned at the outer tube 2 of the vacuum heat insulation tube 1 ' of upper end and be positioned at the vacuum heat insulation tube 1 of lower end " outer tube 2 between be connected by box cupling 5 screw thread, the hold-down ring 4 being arranged in the vacuum heat insulation tube 1 ' of upper end is located in the vacuum heat insulation tube 1 being positioned at lower end ", its just with the vacuum heat insulation tube 1 being positioned at lower end " support ring 3 on gasket ring 321 match to compress with multiple carbon seal ring 322 and contact, now screw box cupling 5, the compressed part 42 that can play the hold-down ring 4 of the vacuum heat insulation tube 1 ' making to be positioned at upper end compresses and is positioned at the vacuum heat insulation tube 1 of lower end " the gasket ring 321 of sealing 32 of support ring 3 and multiple graphite-seal ring 322, achieve the secondary seal at vacuum heat insulation tube box cupling place, decrease box cupling place steam to stream, the impact of decompression on vapor flow.
Vacuum heat insulation tube of the present utility model, support ring 3 and hold-down ring 4 has been welded respectively at the two ends of interior pipe 1 and outer tube 2, while tightening the box cupling 5 of two vacuum heat insulation tubes, the multiple graphite-seal rings 322 on support ring 3 are compressed by hold-down ring 4, achieve the secondary seal at vacuum heat insulation tube box cupling place, decrease box cupling place steam to stream, the impact of decompression on vapor flow, thus greatly reduce the focus loss at vacuum heat insulation tube box cupling place, guarantee the smooth and easy injection of HTHP wet saturated steam at No leakage and decompression and under the less condition of heat waste, play again the effect ensureing shaft bottom mass dryness fraction simultaneously and reduce casing deformation, effect of protection well cementing casing pipe.
The foregoing is only several embodiment of the present utility model, those skilled in the art can carry out various change or modification to the utility model embodiment according to content disclosed in application documents and not depart from spirit and scope of the present utility model.
Claims (5)
1. a vacuum heat insulation tube, it is characterized in that, it comprises inner and outer tubes, described interior pipe is located in described outer tube, support ring is connected with between one end of described interior pipe and one end of described outer tube, be connected with hold-down ring between the other end of described interior pipe and the other end of described outer tube, outside the other end of described outer tube, be connected with box cupling.
2. vacuum heat insulation tube as claimed in claim 1, is characterized in that, be formed with annular space, be filled with heat-barrier material in described annular space between described interior pipe and described outer tube.
3. vacuum heat insulation tube as claimed in claim 1, it is characterized in that, described support ring comprises integrated weld part and sealing, and described weld part is welded to connect with described interior pipe, described outer tube respectively, described sealing is arranged with gasket ring and multiple graphite-seal ring.
4. vacuum heat insulation tube as claimed in claim 1, it is characterized in that, described hold-down ring comprises integrated weld part and compressed part, and described weld part is welded to connect with described interior pipe, described outer tube respectively.
5. vacuum heat insulation tube as claimed in claim 1, it is characterized in that, the section of being threaded of described box cupling is buttress thread linkage section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415902.1U CN204804703U (en) | 2015-06-16 | 2015-06-16 | Vacuum heat insulation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520415902.1U CN204804703U (en) | 2015-06-16 | 2015-06-16 | Vacuum heat insulation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204804703U true CN204804703U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520415902.1U Active CN204804703U (en) | 2015-06-16 | 2015-06-16 | Vacuum heat insulation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204804703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948118A (en) * | 2015-06-16 | 2015-09-30 | 中国石油天然气股份有限公司 | Vacuum heat insulation pipe |
| CN110185424A (en) * | 2019-05-27 | 2019-08-30 | 淮安市井神钻采机具有限公司 | A kind of prestressing force multistage heat insulation compensator |
-
2015
- 2015-06-16 CN CN201520415902.1U patent/CN204804703U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948118A (en) * | 2015-06-16 | 2015-09-30 | 中国石油天然气股份有限公司 | Vacuum heat insulation pipe |
| CN110185424A (en) * | 2019-05-27 | 2019-08-30 | 淮安市井神钻采机具有限公司 | A kind of prestressing force multistage heat insulation compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |