CN208089238U - A kind of vacuum heat insulation tube - Google Patents
A kind of vacuum heat insulation tube Download PDFInfo
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- CN208089238U CN208089238U CN201820357610.0U CN201820357610U CN208089238U CN 208089238 U CN208089238 U CN 208089238U CN 201820357610 U CN201820357610 U CN 201820357610U CN 208089238 U CN208089238 U CN 208089238U
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- box cupling
- tube
- inner tube
- vacuum heat
- annular space
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Abstract
The utility model is related to the underground steam injection equipment of oil-field thick-oil thermal recovery operation, disclose a kind of vacuum heat insulation tube, including box cupling and tube body, the tube body is welded by outer tube and inner tube, vacuum state is accompanied therebetween and fills the tube body annular space of tube body heat-barrier material, the box cupling includes box cupling outer tube and box cupling inner tube, box cupling outer tube is welded with box cupling inner tube, box cupling heat-barrier material is filled in the box cupling annular space that box cupling outer tube and box cupling inner tube are formed, and dock garter spring sky and vacuumize, the box cupling is connect by screw thread with tube body；Pass through the design method of vacuum heat-insulation tube body annular space and the juxtaposition thermal insulation layer of vacuum heat-insulation box cupling annular space, utilize the resistance to crowded performance of the excellent adiabatic capacity and resistance to compression of vacuum heat insulation tube tube body and box cupling, it effectively solves the problems, such as the heat loss at instlated tubular string collar " hot spot " and casing damage, improves vacuum heat-insulation tubing string integral heat-insulation property.
Description
Technical field
The utility model is related to the underground steam injection equipment of oil-field thick-oil thermal recovery operation, and in particular to a kind of vacuum heat insulation tube,
For steam injection producing well.
Background technology
Instlated tubular tubing string is one of key facility energy-efficient in heavy oil exploitation via steam injection field, and heat-proof quality is direct
Thermal recovery effect is influenced, heat-insulated tubing and casing is connected by box cupling, which directly contacts with steam, 70-80% in gas injection process
Heat loss betide the connecting portion, be the heat radiation point of entire instlated tubular tubing string, at box cupling the presence of heat radiation point can cause heat
Loss increases, the damage of vaporization burn into casing occurs in box cupling and falls the accidents such as well.
The main technique for solving the junction heat loss at present be inside box cupling J values position installation by polytetrafluoroethylene (PTFE) every
The insulation bushing of hot material and steel lining composition, to reduce the heat loss of heat radiation point at heat-insulated tubing and casing string collar, the method one
Determine to reduce the heat loss at this in degree, but insulation bushing still has that heat insulation is poor, down-hole operation is complicated and heat shield liner
Set biasing leads to problems such as the tool of going into the well be hampered.
Invention content
To overcome the deficiencies of existing technologies, the utility model provides a kind of vacuum heat insulation tube, passes through vacuum heat-insulation tube body ring
The design method of empty and vacuum heat-insulation box cupling annular space juxtaposition thermal insulation layer utilizes the excellent of vacuum heat insulation tube tube body and box cupling
Heat-proof quality and the resistance to crowded performance of resistance to compression solve the problems, such as the heat loss at instlated tubular string collar " hot spot " and casing damage.
The technical scheme adopted by the utility model is that：A kind of vacuum heat insulation tube, including box cupling and tube body, the tube body is by outer
Pipe is welded with inner tube, is accompanied vacuum state therebetween and is filled the tube body annular space of tube body heat-barrier material, the box cupling includes outside box cupling
Pipe and box cupling inner tube, box cupling outer tube are welded with box cupling inner tube, are filled in the box cupling annular space that box cupling outer tube and box cupling inner tube are formed
Box cupling heat-barrier material, and dock garter spring sky and vacuumize, the box cupling is connect by screw thread with tube body.
Above-mentioned technical proposal can advanced optimize for：
Box cupling is filled in box cupling annular space inhales hydrogen agent.
The box cupling inner tube is equipped with the box cupling inner tube righting shoulder with outer tube wall radial fit, in box cupling inner tube stabbing board
Box cupling air channel is set at the top of shoulder.
The box cupling inner tube righting shoulder is axially uniformly arranged along box cupling inner tube, and box cupling heat-barrier material is placed in adjacent box cupling
In box cupling annular space between inner tube righting shoulder.
Tube body is filled in the tube body annular space inhales hydrogen agent.
Said inner tube both ends are toroidal, are welded at the end 20mm-30mm away from outer tube, the box cupling inner tube processing
Internal thread, outer tube both ends threading.
Said inner tube thickeies at reserved external thread length, and outer tube end is welded at inner tube thickening, box cupling inner tube both ends
Inner circle structure is consistent with the structure after outer tube and inner tube welding, the box cupling inner tube machining internal thread, the processing of said inner tube both ends
External screw thread.
The friendship that vacuum heat insulation tube provided by the utility model passes through vacuum heat-insulation tube body annular space and vacuum heat-insulation box cupling annular space
The design method of fork overlapping thermal insulation layer, using the resistance to crowded performance of the excellent adiabatic capacity and resistance to compression of vacuum heat insulation tube tube body and box cupling,
Effectively solves the problems, such as heat loss at instlated tubular string collar " hot spot " and casing damage, improve vacuum heat-insulation tubing string integrally every
Hot property.
Description of the drawings
Fig. 1 is the external pipe thread linking vacuum heat insulation tube structural schematic diagram of the utility model embodiment；
Fig. 2 is the Internal Pipe Thread linking vacuum heat insulation tube structural schematic diagram of the utility model embodiment；
In figure：1- box cupling outer tubes, 2- box cupling inner tubes, 3- box cupling heat-barrier materials, 4- box cuplings inhale hydrogen agent, 5- box cuplings, 6- box cuplings
Annular space, 7- internal threads, 8- box cupling inner tube righting shoulders, 9- box cupling air channels, 10- outer tubes, 11- inner tubes, 12- tube bodies, 13- tube bodies
Heat-barrier material, 14- tube bodies inhale hydrogen agent, 15- tube body annular spaces, 16- external screw threads.
Specific implementation mode
Referring to Fig.1, a kind of vacuum heat insulation tube, including box cupling 5 and tube body 12, the tube body 12 are welded by outer tube 10 and inner tube 11
It connects, accompany vacuum state therebetween and fills the tube body annular space 15 of tube body heat-barrier material 13, the box cupling 5 includes 1 He of box cupling outer tube
Box cupling inner tube 2, box cupling outer tube 1 are welded with box cupling inner tube 2, are filled out in the box cupling annular space 6 that box cupling outer tube 1 and box cupling inner tube 2 are formed
Box cupling heat-barrier material 3 is filled, and docks garter spring sky 6 and vacuumizes, the box cupling 5 is connect by screw thread with tube body 12；11 both ends of inner tube
Outer tube 10 is welded on after expanding away from the inner wall at pipe end 20mm-30mm, tube body heat-barrier material 13 is placed in tube body annular space 15, quilt
Fill tube body in the tube body annular space 15 vacuumized and inhale hydrogen agent 14, tube body annular space 15 conduction, convection current, three aspect of radiation utmostly
Ground reduces the heat loss of tube body 12, while improving the security performance of tube body 12；Box cupling inner tube 2 is equipped with radially matches with 10 inner wall of outer tube
It closes and along the box cupling inner tube righting shoulder 8 that box cupling inner tube 2 is axially uniformly arranged, further increases the anti-crowded compressive resistance of box cupling,
In 8 top setting box cupling air channel 9 of box cupling inner tube righting shoulder, it is ensured that 6 inside of box cupling annular space is in identical vacuum state, box cupling
Heat-barrier material 3 is placed in the box cupling annular space 6 between adjacent box cupling inner tube righting shoulder 8, the filling suction hydrogen agent in box cupling annular space 6
4, box cupling annular space 6 farthest reduces the heat loss of box cupling 5, while improving box cupling 5 at conduction, convection current, three aspect of radiation
Security performance；Box cupling 5 is connect by the internal thread 7 of inner tube 2 and the external screw thread 16 of outer tube 10 with tube body 12, i.e., external pipe thread connects
Formula vacuum heat insulation tube.
With reference to Fig. 2, Internal Pipe Thread linking vacuum heat insulation tube exists with external pipe thread linking vacuum heat insulation tube difference
In：Inner tube 11 thickeies at reserved 16 length of external screw thread, and 10 end of outer tube is welded at 11 thickening of inner tube, 2 both ends of box cupling inner tube
Structure after inner circle structure is welded with outer tube 10 and inner tube 11 is consistent, the internal thread 7 and inner tube 11 that box cupling 5 passes through box cupling inner tube 2
External screw thread 16 connect with tube body 12, i.e. Internal Pipe Thread linking vacuum heat insulation tube.
Claims (7)
1. a kind of vacuum heat insulation tube, including box cupling（5）And tube body（12）, the tube body（12）By outer tube（10）With inner tube（11）Weldering
It connects, accompany vacuum state therebetween and fills tube body heat-barrier material（13）Tube body annular space（15）, the box cupling（5）Outside including box cupling
Pipe（1）With box cupling inner tube（2）, box cupling outer tube（1）With box cupling inner tube（2）Welding, it is characterised in that：In box cupling outer tube（1）With connect
Bind round inner tube（2）The box cupling annular space of formation（6）Middle filling box cupling heat-barrier material（3）, and dock garter spring sky（6）It vacuumizes, it is described to connect
Hoop（5）Pass through screw thread and tube body（12）Connection.
2. vacuum heat insulation tube according to claim 1, it is characterised in that：In box cupling annular space（6）Middle filling box cupling inhales hydrogen agent
（4）.
3. vacuum heat insulation tube according to claim 2, characteristic is：The box cupling inner tube（2）It is equipped with and outer tube（10）It is interior
The box cupling inner tube righting shoulder of wall radial fit（8）, in box cupling inner tube righting shoulder（8）Box cupling air channel is arranged in top（9）.
4. vacuum heat insulation tube according to claim 3, characteristic is：The box cupling inner tube righting shoulder（8）Along box cupling
Pipe（2）It is axially uniformly arranged, box cupling heat-barrier material（3）It is placed in adjacent box cupling inner tube righting shoulder（8）Between box cupling annular space
（6）It is interior.
5. vacuum heat insulation tube according to claim 4, characteristic is：The tube body annular space（15）Middle filling tube body inhales hydrogen agent
（14）.
6. vacuum heat insulation tube according to claim 5, it is characterised in that：Said inner tube（11）Both ends are toroidal, welding
Away from outer tube（10）End 20mm-30mm at, the box cupling inner tube（2）Machining internal thread（7）, the outer tube（10）Both ends add
Work external screw thread（16）.
7. vacuum heat insulation tube according to claim 5, it is characterised in that：Said inner tube（11）In reserved external screw thread（16）Length
Place thickeies, outer tube（10）End and inner tube（11）It is welded at thickening, box cupling inner tube（2）Both ends inner circle structure and outer tube（10）With it is interior
Pipe（11）Structure after welding is consistent, the box cupling inner tube（2）Machining internal thread（7）, said inner tube（11）Both ends process outer spiral shell
Line（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357610.0U CN208089238U (en) | 2018-03-16 | 2018-03-16 | A kind of vacuum heat insulation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357610.0U CN208089238U (en) | 2018-03-16 | 2018-03-16 | A kind of vacuum heat insulation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089238U true CN208089238U (en) | 2018-11-13 |
Family
ID=64059143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820357610.0U Active CN208089238U (en) | 2018-03-16 | 2018-03-16 | A kind of vacuum heat insulation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208089238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027350A (en) * | 2021-05-10 | 2021-06-25 | 中海油能源发展股份有限公司工程技术分公司 | Heat-point-free heat insulation oil pipe column structure |
| CN114575784A (en) * | 2022-03-14 | 2022-06-03 | 东北石油大学 | High-vacuum wall heat insulation pipe column and preparation method thereof |
-
2018
- 2018-03-16 CN CN201820357610.0U patent/CN208089238U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027350A (en) * | 2021-05-10 | 2021-06-25 | 中海油能源发展股份有限公司工程技术分公司 | Heat-point-free heat insulation oil pipe column structure |
| CN114575784A (en) * | 2022-03-14 | 2022-06-03 | 东北石油大学 | High-vacuum wall heat insulation pipe column and preparation method thereof |
| CN114575784B (en) * | 2022-03-14 | 2023-12-26 | 东北石油大学 | High-vacuum wall heat insulation pipe column and preparation method thereof |
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