CN201915854U - Integrated sleeving insulated tubing connection structure - Google Patents
Integrated sleeving insulated tubing connection structure Download PDFInfo
- Publication number
- CN201915854U CN201915854U CN2010206981376U CN201020698137U CN201915854U CN 201915854 U CN201915854 U CN 201915854U CN 2010206981376 U CN2010206981376 U CN 2010206981376U CN 201020698137 U CN201020698137 U CN 201020698137U CN 201915854 U CN201915854 U CN 201915854U
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- pipe
- user side
- tube
- outer tube
- factory
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Abstract
The utility model relates to an integrated sleeving insulated tubing connection structure, which comprises a collar, an outer tube factory end and an outer tube user end. Tube-body inner tubes are respectively welded in both the outer tube factory end and the outer tube user end in a sealing mode. A tube-end inner tube is arranged between a tube-body inner tube factory end and a tube-body inner tube user end. Both ends of a tube-end inner tube are connected with the tube-body inner tube factory end and the tube-body inner tube user end through sealing joint structures. A closed tube-end heat insulation cavity is formed between the tube-end inner tube and the tube-body inner tube factory end, the outer tube factory end, the collar, the tube-body inner tube user end and the outer tube user end. A heat insulation sleeve is arranged in the tube-end heat insulation cavity. A sealing structure is formed among the tube-body inner tube factory end, the tube-end inner tube and the tube-body inner tube user end. By the integrated sleeving insulated tubing connection structure, not only can the effects of heat conduction, convection and radiation at the collar joint be reduced so that the heat loss at the collar joint is reduced and the sealing performance at the collar joint is improved, but also the problem that the collar is easy to corrode at high temperature can be prevented.
Description
[technical field]
The utility model relates to a kind of insulated tubing joint connecting structure that is used for heavy crude heat extraction, relates in particular to the syndeton of vacuum heat-insulation oil pipe joint.
[background technology]
Viscosity height, heavy crude oil claim viscous crude.The viscosity with temperature of viscous crude changes and significantly changes, and test shows that for viscous crude, if temperature increases by 8～9 ℃, its viscosity can reduce half.Therefore, to exploitation, the conveying of viscous crude, adopt heating power to reduce its viscosity more; To underground heavy oil tested layer steam in jection, be the major technique measure of present petroleum industry heavy crude producing, be commonly called as " the steam soak method of heavy crude heat extraction " or " steam orders about method ".
To underground injection high temperature (200 ℃～350 ℃) steam the time, loss, reduction thermal recovery cost in order to reduce its heat adopt the tubing string that constitutes with insulated tubing (SY/T5324-94) at present usually, and its joint connecting structure as shown in Figure 1; Described insulated tubing is made up of pipe 3 and box cupling 1 in outer tube 2, the body, the length of pipe 3 is more smaller than the length of outer tube 2 in the body, pipe 3 two ends are through being welded on hermetically on the inwall of outer tube 2 after the enlarging in the body, and pipe 3 and outer tube 2 are coaxial in the body, and the two ends of outer tube 2 are equipped with the pipe taper thread; When dispatching from the factory, all to twist at the external screw thread of insulated tubing outer tube 2 one ends and to be connected to box cupling 1, the end that insulated tubing outer tube 2 was screwed with box cupling 1 when people will be dispatched from the factory usually is called factory's end, and the other end then is called user side.In actual use, insulated tubing outer tube 2 is connected as shown in Figure 1 with box cupling 1, the outer tube factory end 21 of an insulated tubing is screwed in the left end screwed hole of box cupling 1, the outer tube user side 22 of another root insulated tubing is screwed in the box cupling 1 right-hand member screwed hole, so join end to end, form the tubing string of insulated tubing.Because in each root insulated tubing, formed body heat-insulation chamber 4 between pipe 3 and the outer tube 2 in the body, and to having carried out vacuumizing processing in it, and multiple heat insulation structural is set, like this, when in insulated tubing, feeding steam, heat is just very little from the thermal losses amount of the body heat-insulation chamber 4 place sections losses of insulated tubing, but at insulated tubing not by 4 coverings place of body heat-insulation chamber, because plumber factory end 21 outside, outer tube user side 22 is not provided with any heat insulation structural with the junction of box cupling 1, and the two internal diameter of pipe 3 differs bigger in the outer tube 2 of box cupling 1 junction and the body, when steam passes through the junction of box cupling 1, steam can be turbulent shape, therefore, in box cupling 1 junction be the keypoint part that the insulated tubing heat scatters and disappears.
In the prior art, because the connected mode of insulated tubing is for being threaded, in feeding high-temperature vapour process, its connection of thread leakage problem can occur because of being subjected to high temperature action; Simultaneously, the high temperature of box cupling 1 junction can aggravate box cupling at Cl
-, CO
2Corrosion under the hole condition.
Will further reduce the thermal losses of insulated tubing tubing string, emphasis is to reduce the heat of insulated tubing in the box cupling junction to scatter and disappear, and should heat insulation structural be set at box cupling and outer tube junction, resolves sealing problem herein simultaneously; Like this, can effectively reduce the thermal losses of steam in jection, help again to solve that easily leak at its box cupling place that produces because of high temperature and easily by Cl in the insulated tube coupling junction
-, CO
2Defectives such as corrosion.
For above-mentioned purpose, the applicant is the joint connecting structure that discloses a kind of insulated tubing in 201010513674.3 at application number, it can reduce the thermal losses of insulated tube coupling junction, guarantees sealing performance herein again, can also eliminate Yin Gaowen and the box cupling place that produces easily by Cl
-, CO
2The defective of corrosion.
Its technical essential is: be provided with in the pipe end between the pipe user side in plumber factory end and the body in body and manage, pipe is formed by managing in pipe and the right pipe end in the left pipe end in the pipe end, the interior plumber factory of the left end of pipe and body end is fixed into one through welding in the pipe end of a left side, manage user side in the right-hand member of pipe and the body in the right pipe end and be fixed into one through welding, form the structure that is tightly connected between the pipe in pipe and the right pipe end in the pipe end of a left side, plumber factory end in the tube and tube body in pipe end, outer tube factory end, box cupling, form the pipe end heat-insulation chamber of a sealing in the body between pipe user side and the outer tube user side, reduce thermal loss with this, want further to reduce heat waste, can in the pipe end heat-insulation chamber of sealing, set up collet.
Owing under the effect of insulated tubing screw thread torque wrench moment, the interior pipe of left pipe end can produce the interference effect with the seal face of the interior pipe of right pipe end in the interior pipe of pipe end, can guarantee the interior sealing performance of managing joint of left and right sides pipe end; This structure can reduce conduction, convection current and the radiation effects of heat herein, can reduce the thermal loss of box cupling junction, helps to solve problems such as leak at the nipple place and box cupling is perishable again, and it is present ideal insulated tubing syndeton.The applicant designs a kind of integral assembling formula insulated tubing syndeton again through conscientiously research, and it is heat insulation to be that 201010513674.3 described schemes are identical with sealing function and application number.
[utility model content]
The purpose of this utility model provides a kind of integral assembling formula insulated tubing syndeton, and it can reduce the thermal losses of insulated tube coupling junction, guarantees sealing performance herein again, can also eliminate Yin Gaowen and the box cupling place that produces by Cl
-, CO
2The defective of corrosion.
The technical scheme that the utility model is taked is:
Described integral assembling formula insulated tubing syndeton, comprise box cupling, the outer tube factory end that is threaded with the box cupling left end, the outer tube user side that is threaded with the box cupling right-hand member, plumber factory end is welded with plumber factory end in the body sealedly outside, manage user side outside and be welded with pipe user side in the body sealedly, in body, be provided with in the pipe end between the pipe user side in plumber factory end and the body and manage, it is characterized in that: in the pipe end two ends of pipe respectively with body in plumber factory end and the body pipe user side be connected by sealing docking structure, plumber factory holds in the tube and tube body in pipe end, outer tube factory end, box cupling, form the pipe end heat-insulation chamber of a sealing in the body between pipe user side and the outer tube user side.
Further, the sealing docking structure of managing between the user side in tube and tube body interior plumber factory end and the body in the pipe end is: manage user side in plumber factory end and the body and all be provided with the butt joint seam in body, the pipe two ends are set in the butt joint seam of pipe user side in body interior plumber factory end and the body in the pipe end, the pipe two ends are the interference butt joint with the end face that contacts of butt joint seam in the pipe end, and radial fit is the combination of interference fits or interference fit or interference fits and interference fit.
Further, an end radial fit of pipe is an interference fit in the pipe end, and other end radial fit is an interference fits.
Further, plumber factory end is fitted in interference fit in the butt joint seam of plumber factory end in the body in the pipe end, and the pipe user side is sleeved in the butt joint seam of pipe user side in the body in the interference fits mode in the pipe end.
Further, plumber factory end is fitted in the butt joint seam of plumber factory end in the body in the pipe end with interference fit, the pipe user side is provided with guide section and seal section from outside to inside successively in pipe end, guide section is sleeved in the interference fits mode in the butt joint seam of pipe user side in the body, and seal section then is sleeved in the butt joint seam of pipe user side in the body with interference fit.
Further, the length of fit L in the butt joint seam is 5～10 millimeters, seal section L
2Axial length be 3～5 millimeters.
Further, in the pipe end heat-insulation chamber of described sealing, be provided with collet.
Further, described collet is made by ceramic fibre, all is coated with aluminium foil on the cylindrical of collet and inner hole wall.
Further, be provided with the torque shoulder at the threaded ends of box cupling and outer tube factory end or the threaded ends of box cupling and outer tube user side, the distance between outer tube end face and the spacing end face of box cupling internal thread hold less than plumber factory in the pipe end and Guan Rui in manage the maximum interference amount sum of family end.
Further, the threaded ends at box cupling and outer tube user side is provided with the torque shoulder.
Further, the threaded ends at box cupling and outer tube factory end is provided with the torque shoulder.
Owing in the monolithic pipe end has been set up in the box cupling junction, manage, the two ends of pipe are managed user side in plumber factory end and the body and are docked by the end face over-surplus fit structure respectively with in the body in the pipe end, in box cupling and pipe end, manage the pipe end heat-insulation chamber that forms a sealing between user side, the outer tube user side in plumber factory end, outer tube factory end, the body in pipe, the body like this, improved insulation herein; When vapours flows through the box cupling junction, vapours can only with pipe end in manage and contact, can not contact with the outer tube user side with outer tube factory end, box cupling, scatter and disappear thereby can reduce the heat that steam produces with conduction pattern in the box cupling junction significantly.If in the pipe end heat-insulation chamber, set up collet, and on the cylindrical of collet and inner hole wall, all be coated with aluminium foil, then can reduce this better and sentence convection current and radiation mode and the thermal losses that produces.The sealing performance of pipe package assembly is guaranteed in the monolithic pipe end, the end face of the interior pipe of pipe two ends and body has formed the sealing of first road by the interference Butt sealing in the pipe end, interference fit in the pipe end between the seam endoporus of the interior pipe of pipe two ends cylindrical and body has formed the sealing of second road, forms three seals between box cupling and the outer tube.Therefore, this syndeton can not only reduce the thermal loss of box cupling junction significantly, and problem such as the joint screw thread that has solved the box cupling junction leaks and box cupling is perishable.The torque shoulder that is provided with at the threaded ends of box cupling and outer tube, its effect is to guarantee that outer tube screws in the accurate button of going up in the box cupling, flex point whether occurring by the torque value that spins helps the operator and judges whether go up button correct, can guarantee sealing butt joint reliably between the pipe in the tube and tube body in the pipe end, can prevent pipe excessive deformation in the pipe end again and cause seal failure.
[description of drawings]
Fig. 1 is the structural representation that insulated tubing in the prior art (SY/T5324-94) connects;
Fig. 2 sets up the schematic diagram of sealing ring in gas thread connects for API SPEC 5CT in the prior art;
Fig. 3 is a kind of structural representation of the present utility model, and is provided with the torque shoulder at user side;
Fig. 4 is provided with the structural representation of guide section and seal section for pipe user side in the pipe end;
Fig. 5 is the enlarged drawing at I place among Fig. 4;
Fig. 6 is the structural representation of pipe and collet in the pipe end among Fig. 3;
Fig. 7 is the structural representation of torque shoulder;
The torque wrench moment curve map that Fig. 8 is threaded for insulated tubing.
Among the figure, the 1-box cupling; The 2-outer tube; Pipe in the 3-body; 4-body heat-insulation chamber; Pipe in the 5-pipe end; The 7-collet; The 8-aluminium foil; The 9-torque shoulder; 21-outer tube factory end; 22-outer tube user side; Plumber factory end in the 31-body; Pipe user side in the 32-body; Plumber factory end in the 51-pipe end; Pipe user side in the 52-pipe end; The 53-guide section; The 54-seal section; 91-outer tube end face; The spacing end face of 92-box cupling internal thread.
[specific embodiment]
Below in conjunction with drawings and Examples the utility model is described in further detail.
Embodiment 1: described integral assembling formula insulated tubing syndeton, as shown in Figure 3, comprise box cupling 1, the outer tube factory end 21 that is threaded with box cupling 1 left end, the outer tube user side 22 that is threaded with box cupling 1 right-hand member, plumber factory end 21 is welded with plumber factory end 31 in the body sealedly outside, manage user side 22 outside and be welded with pipe user side 32 in the body sealedly, in body, be provided with between the pipe user side 32 in plumber factory end 31 and the body and manage 5 in the pipe end, pipe user side 32 all is provided with the butt joint seam in plumber factory end 31 and the body in body, the axial length of butt joint seam is L, pipe 5 factories end 51 is fitted in the butt joint seam of plumber factory end 31 in the body in the pipe end with interference fit, length of fit L between the two is 10 millimeters, pipe user side 52 is sleeved in the butt joint seam of pipe user side 32 in the body in the pipe end in the interference fits mode, length of fit L between the two is 10 millimeters, plumber factory end 31 in pipe 5 and the body in pipe end, outer tube factory end 21, box cupling 1, form the pipe end heat-insulation chamber of a sealing in the body between pipe user side 32 and the outer tube user side 22, in the pipe end heat-insulation chamber of described sealing, be provided with collet 7, on the cylindrical of collet 7 and inner hole wall, all be coated with aluminium foil 8, described collet 7 is made by ceramic fibre, threaded ends at box cupling 1 and outer tube user side 22 is provided with torque shoulder 9, and the distance between the spacing end face 92 of outer tube end face 91 and box cupling internal thread is less than the maximum interference amount sum of pipe user side 52 in plumber factory end 51 and the pipe end in the pipe end.
Embodiment 2: described integral assembling formula insulated tubing syndeton, as Fig. 4～shown in Figure 8, comprise box cupling 1, the outer tube factory end 21 that is threaded with box cupling 1 left end, the outer tube user side 22 that is threaded with box cupling 1 right-hand member, plumber factory end 21 is welded with plumber factory end 31 in the body sealedly outside, manage user side 22 outside and be welded with pipe user side 32 in the body sealedly, in body, be provided with between the pipe user side 32 in plumber factory end 31 and the body and manage 5 in the pipe end, pipe user side 32 all is provided with the butt joint seam in plumber factory end 31 and the body in body, the axial length of butt joint seam is L, plumber factory end 51 is fitted in the butt joint seam of plumber factory end 31 in the body in the pipe end with interference fit, length of fit L between the two is 10 millimeters, pipe user side 52 is provided with guide section 53 and seal section 54 from outside to inside successively in pipe end, and the axial length of guide section 53 is L
1, the length of seal section 54 is L
2, L in this example
2=5 millimeters, guide section 53 is sleeved in the butt joint seam of plumber factory end 31 in the body in the interference fits mode, seal section 54 is fitted in the butt joint seam of pipe user side 32 in the body with interference fit, plumber factory end 31 in pipe 5 and the body in pipe end, outer tube factory end 21, box cupling 1, form the pipe end heat-insulation chamber of a sealing in the body between pipe user side 32 and the outer tube user side 22, in the pipe end heat-insulation chamber of described sealing, be provided with collet 7, on the cylindrical of collet 7 and inner hole wall, all be coated with aluminium foil 8, described collet 7 is made by ceramic fibre, threaded ends at box cupling 1 and outer tube user side 22 is provided with torque shoulder 9, and the distance between the spacing end face 92 of outer tube end face 91 and box cupling internal thread is less than the maximum interference amount sum of pipe user side 52 in plumber factory end 51 and the pipe end in the pipe end.
In above-mentioned example, the effect that torque shoulder 9 is set is to guarantee that outer tube factory end 21 screws in the accurate button of going up in the box cupling 1, prevent that the pipe excessive deformation lost efficacy in the pipe end, flex point whether occurring by the torque value that spins in actual use helps the operator and judges whether go up button correct, can guarantee to realize reliable end face Butt sealing between the pipe in the pipe two ends and body in the pipe end, can prevent in the pipe end pipe generation excessive deformation again and lost efficacy.Torque shoulder 9 also can be arranged between outer tube factory end 21 and the box cupling 1 connecting thread end face.
Claims (10)
1. integral assembling formula insulated tubing syndeton, comprise box cupling (1), the outer tube factory end (21) that is threaded with box cupling (1) left end, the outer tube user side (22) that is threaded with box cupling (1) right-hand member, plumber factory end (21) is welded with plumber factory end (31) in the body sealedly outside, manage user side (22) outside and be welded with pipe user side (32) in the body sealedly, in body, be provided with pipe (5) in the pipe end in plumber factory end (31) and the body between the pipe user side (32), it is characterized in that: in the pipe end two ends of pipe (5) respectively with body in plumber factory end (31) and the body pipe user side (32) is connected by the sealing docking structure, in pipe end, manage in (5) and the body plumber factory and hold (31), outer tube factory end (21), box cupling (1), form the pipe end heat-insulation chamber of a sealing in the body between pipe user side (32) and the outer tube user side (22).
2. according to the described integral assembling formula of claim 1 insulated tubing syndeton, it is characterized in that: in the pipe end in pipe (5) and the body in plumber factory end (31) and the body sealing docking structure between the pipe user side (32) be: plumber factory holds and manages user side (32) in (31) and the body and all be provided with and dock seam in body, pipe (5) two ends are set in the butt joint seam of pipe user side (32) in interior plumber factory end of body (31) and the body in the pipe end, pipe (5) two ends are the interference butt joint with the end face that contacts of butt joint seam in the pipe end, and radial fit is the combination of interference fits or interference fit or interference fits and interference fit.
3. according to the described integral assembling formula of claim 2 insulated tubing syndeton, it is characterized in that: an end radial fit of pipe (5) is an interference fit in the pipe end; Other end radial fit is an interference fits.
4. according to the described integral assembling formula of claim 2 insulated tubing syndeton, it is characterized in that: plumber factory end (51) is fitted in interference fit in the butt joint seam of plumber factory end (31) in the body in the pipe end, and pipe user side (52) is sleeved in the butt joint seam of managing user side (32) in the body in the interference fits mode in the pipe end.
5. according to the described integral assembling formula of claim 2 insulated tubing syndeton, it is characterized in that: plumber factory end (51) is fitted in the butt joint seam of plumber factory end (31) in the body in the pipe end with interference fit, in pipe end, manage user side (52) and be provided with guide section (53) and seal section (54) from outside to inside successively, guide section (53) is sleeved in the interference fits mode in the butt joint seam of managing user side (32) in the body, and seal section (54) then is sleeved in the butt joint seam of managing user side (32) in the body with interference fit.
5, according to the described integral assembling formula of claim 5 insulated tubing syndeton, it is characterized in that: the length of fit L in the butt joint seam is 5～10 millimeters, the axial length L of seal section (54)
2It is 3～5 millimeters.
6. according to the described integral assembling formula of claim 1 insulated tubing syndeton, it is characterized in that: in the pipe end heat-insulation chamber of described sealing, be provided with collet (7).
7. according to the described integral assembling formula of claim 6 insulated tubing syndeton, it is characterized in that: described collet (7) is made by ceramic fibre, all is coated with aluminium foil (8) on the cylindrical of collet (7) and inner hole wall.
8. according to the described integral assembling formula of claim 1 insulated tubing syndeton, it is characterized in that: be provided with torque shoulder (9) at box cupling (1) and the threaded ends of outer tube factory end (21) or the threaded ends of box cupling (1) and outer tube user side (22), the distance between outer tube end face (91) and the spacing end face of box cupling internal thread (92) is less than the maximum interference amount sum at effective family auspicious (52) in plumber factory end (51) and the pipe end in the pipe end.
9. described according to Claim 8 integral assembling formula insulated tubing syndeton is characterized in that: the threaded ends at box cupling (1) and outer tube user side (22) is provided with torque shoulder (9).
10. described according to Claim 8 integral assembling formula insulated tubing syndeton is characterized in that: hold the threaded ends of (21) to be provided with torque shoulder (9) at box cupling (1) with outer tube factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206981376U CN201915854U (en) | 2010-12-31 | 2010-12-31 | Integrated sleeving insulated tubing connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206981376U CN201915854U (en) | 2010-12-31 | 2010-12-31 | Integrated sleeving insulated tubing connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915854U true CN201915854U (en) | 2011-08-03 |
Family
ID=44415656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206981376U Expired - Lifetime CN201915854U (en) | 2010-12-31 | 2010-12-31 | Integrated sleeving insulated tubing connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086758A (en) * | 2010-12-31 | 2011-06-08 | 江苏常宝钢管股份有限公司 | Integral-assembling type heat-insulating oil pipe connection structure |
| WO2012048535A1 (en) * | 2010-10-15 | 2012-04-19 | 江苏常宝钢管股份有限公司 | Connection structure for insulated oil pipe |
-
2010
- 2010-12-31 CN CN2010206981376U patent/CN201915854U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048535A1 (en) * | 2010-10-15 | 2012-04-19 | 江苏常宝钢管股份有限公司 | Connection structure for insulated oil pipe |
| CN102086758A (en) * | 2010-12-31 | 2011-06-08 | 江苏常宝钢管股份有限公司 | Integral-assembling type heat-insulating oil pipe connection structure |
| CN102086758B (en) * | 2010-12-31 | 2016-06-22 | 江苏常宝钢管股份有限公司 | Integral-assembling type heat-insulating oil pipe connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |