CN100441931C - Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method - Google Patents
Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method Download PDFInfo
- Publication number
- CN100441931C CN100441931C CNB2006101038285A CN200610103828A CN100441931C CN 100441931 C CN100441931 C CN 100441931C CN B2006101038285 A CNB2006101038285 A CN B2006101038285A CN 200610103828 A CN200610103828 A CN 200610103828A CN 100441931 C CN100441931 C CN 100441931C
- Authority
- CN
- China
- Prior art keywords
- tube connector
- intervalve
- tube
- seal
- tubing
- 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
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The inventive structure comprises a first tube joint, a second tube joint with a larger expansion coefficient sleeved outside the first tube joint and an intermediate tube, whose inner surface is connected with the outer surface of the first tube. The inventive connecting method includes the following steps: sleeving the intermediate tube outside the first tube joint and realizing a seal connection and sleeving the second tube joint outside the intermediate tube and realizing a seal connection, so as to realize a seal connection between the first and second tubes. The first tube can be a metal tube and the second tube can be a glass fiber reinforced plastic tube.
Description
Technical field
The present invention relates to be tightly connected structure and connecting means between two kinds of different heat expansion coefficient pipes.
Background technique
Usually, the shell of an induction logger is made up of the metal shell 2 at two ends and middle Glass Steel Tube 1, is tubulose, as shown in Figure 1.Because this instrument works in the high temperature and high pressure environment of underground several kms depths, must prevent various fluids intrusions.Therefore must solve two problems: the first, the withstand voltage properties of glass fibre reinforced plastic material does not also reach the requirement of underground work far away, needs to solve its withstand voltage problem; The second, glass fibre reinforced plastic material is different with the thermal expansion coefficient of metallic material, must solve the sealing problem of both joints in wide temperature range work.
For first problem, the existing practice is to fill silicone oil between coil brace and Glass Steel Tube, and be provided with a piston or hose at oil-filled cavity one end, when down-hole pressure increases, compress this piston or hose and make the oil pressure of oil reservoir increase thereupon, thereby make the pressure of Glass Steel Tube both sides reach balance.But, adopt correction oil injection method to make that the apparatus structure design is complicated, all necessary grease proofing erosion of all electric parts, the rate of fault height, inconvenient maintenance, the price of silicone oil are also very expensive.Even more serious is has formed high-pressure section and has not had the pressure-bearing interface of splenium between dividing at the intersection at logging instrument middle part and two ends, make the high-frequency signal transmission very inconvenient, because more for a long time, spatially can't satisfy the requirement of not only high pressure sealing but also coaxial transmission at signal.
For second problem, at present the sealing that is connected between the Glass Steel Tube that exists and the metal tube also is to adopt common seal ring and the bonding method of adding, mainly be to be applied to normal temperature low service system (less than 20Mpa), high temperature (〉=150 ℃) high pressure (〉=140MPA) during system applies, because the distortion that both thermal expansion coefficient differences are brought is more obvious, can't reach airtight requirement through experiment test.In fact, under hot environment, all there is identical problem for being tightly connected between two kinds of different heat expansion coefficient pipes.
Summary of the invention
The technical problem to be solved in the present invention provides be tightly connected structure and the connecting means between two kinds of different heat expansion coefficient pipes, can realize the reliable sealing between two kinds of tubing under hot environment.
In order to solve the problems of the technologies described above, the invention provides the structure that is tightly connected between two kinds of different heat expansion coefficient pipes, comprise first tube connector and be set in its outer second bigger tube connector of expansion coefficient, also comprise the intervalve that material is identical with second tubing, the internal surface of this intervalve is with described first the tube connector outer surface is airtight is connected, the outer surface of this intervalve is connected with the internal surface of described second tube connector is airtight, the outer surface of described first tube connector has one group of seal groove, and in each seal groove, be equiped with a seal ring respectively, a closely sheathed metal hoop on the outer surface of described intervalve corresponding to this group seal groove.
Further, the above-mentioned structure that is tightly connected also can have following characteristics: first tubing is metal tube, and second tubing is Glass Steel Tube.
Further, the above-mentioned structure that is tightly connected also can have following characteristics: the dovetail groove that also offers an annular on described first tube connector and the radial surface that second tube connector contacts, be formed with a bump that is embedded in this dovetail groove and matches on the radial surface of the described second tube connector correspondence, constitute the joinery and its construction between this first tube connector and second tube connector with its shape.
Further, the above-mentioned structure that is tightly connected also can have following characteristics: the length of this garter spring is greater than the axial length of this group seal groove.
Further, the above-mentioned structure that is tightly connected also can have following characteristics: described intervalve internal surface and the described first tube connector outer surface are provided with the shallow thread that cooperatively interacts, and be all bonding mutually with glue on the surface of contact of described intervalve and described first tube connector, second tube connector.
Seal connecting method between two kinds of different heat expansion coefficient pipes provided by the invention may further comprise the steps:
(a) outer surface at first tube connector has one group of seal groove, in each seal groove of first tube connector, place a seal ring earlier, heat a metal hoop again and it is nested with on described first tube connector corresponding to the position of this group seal groove, then that a material is identical with second tubing intervalve inserts the gap location between the described garter spring and first tube connector;
(b) second tube connector is set in outer also realization of described intervalve and is tightly connected, thereby realize being tightly connected between first and second tubing.
Further, above-mentioned seal connecting method also can have following characteristics: described first tubing is metal tube, and described second tubing is Glass Steel Tube.
Further, above-mentioned seal connecting method also can have following characteristics: the length of described garter spring is greater than the axial length of this group seal groove.
Further, above-mentioned seal connecting method also can have following characteristics: described intervalve internal surface and the described first tube connector outer surface are provided with the shallow thread that cooperatively interacts, when step (a) is set in described intervalve outside first tube connector, at the internal surface of this intervalve and the outer surface gluing of first tube connector, rely on screw-thread fit that this intervalve is progressively screwed in this first tube connector then earlier.
Further, above-mentioned seal connecting method also can have following characteristics: the dovetail groove that also offers an annular on the metallic pipe coupling and the radial surface that the Glass Steel Tube joint contacts, in the described step (b), be on the outer surface of described intervalve, to twine glass cloth to needed outside dimension, when twining, want gluing on the glass cloth surface, after adhesive curing, promptly formed the sealing configuration of described Glass Steel Tube joint and metallic pipe coupling, simultaneously, the radial surface that contacts with metallic pipe coupling at the Glass Steel Tube joint is an integrally formed bump that is embedded in this dovetail groove and matches with its shape constitutes the joinery and its construction between this metallic pipe coupling and the Glass Steel Tube joint.
The present invention has realized being tightly connected between the following two kinds of different heat expansion coefficient pipes of hot environment.Especially, when being applied to induction logger, can simplify Glass Steel Tube in High Temperature High Pressure lower seal structure, widen the application area of Glass Steel Tube under high-temperature and high-pressure conditions, separate the key technology of structural design in the array induction logging instrument development of the mode of oiling pressure-bearing by no means.And can reduce cost, and be convenient to maintenance.
Description of drawings
Fig. 1 is in the embodiment of the invention, the structural drawing of induction logger.
Fig. 2 is the structural drawing A-A sectional drawing of Fig. 1 induction logger.
Fig. 3 is Glass Steel Tube and a metal tube sealing configuration enlarged view among Fig. 2.
Embodiment
As shown in Figures 2 and 3, the shell of induction logger comprises by the Glass Steel Tube 1 of centre and the metal shell 2 at two ends, for an induction logger, its basic physical structure is except that shell, the thick-wall metal pipes 8 that also comprises the coil brace 6 of one or two hollow that is stitched together and be set in the hollow in this support mesopore, this coil brace 6 is cylindrical substantially, coil array and respective transmissions line are housed in the groove on it, thick-wall metal pipes 8 is used to wear electric wiring, plays the effect of transmitting mechanical tension simultaneously.This instrument is the induction logger, relies on to stratum emission electromagnetic wave and receive the stratum scattered wave to realize logging operation, and the shell at middle part need have electrical insulation and the harmless performance of magnetic, has therefore adopted glass fibre reinforced plastic material.The glass fibre reinforced plastic structure two ends are generally the outer steel shell structure, in various simulations, digital circuit and the power supply that connects are housed.A logging instrument length can reach 4～6 meters.
As shown in Figure 3, in order to solve the problem of withstand voltage of Glass Steel Tube, present embodiment is with coaxial Glass Steel Tube 1, coil brace 6 (also can adopt glass fibre reinforced plastic material) and thick-wall metal pipes 8 gapless installations, bear the partial pressure except that Glass Steel Tube, coil brace like this, the propagation of pressure in the external world is arrived thick-wall metal pipes 8, mainly come pressure-bearing, so just can satisfy withstand voltage requirement by this metal tube.
For the airtight problem between hot environment subglass steel pipe and the metallic pipe coupling, its linkage structure as shown in Figure 3, the intervalve 4, garter spring 5 and the seal ring 3 that comprise metallic pipe coupling 20, be socketed in the outer Glass Steel Tube joint 10 of this metallic pipe coupling and use when connecting.
The outer surface of metallic pipe coupling 20 outermost end has one section shallow thread, and a side of close metal tube body then car has gone out one group of annular seal groove that is used to install seal ring, and shown in the figure is 3, but is not limited to this.Intervalve 4 also adopts glass fibre reinforced plastic material, its length and metallic pipe coupling 20 are roughly suitable, internal surface away from metal tube body one end also has one section shallow thread, and shallow thread is all arranged on the whole outer surface, and these intervalve 4 diameters are a bit larger tham the external diameter of described metallic pipe coupling 20.Garter spring 5 is a metallic material, and as steel pipe, its internal diameter and intervalve external diameter are roughly suitable, and length should be greater than the axial length of this group annular seal groove on the metallic pipe coupling 20.
When mounted, in each seal groove of metallic pipe coupling, place earlier one " O " shape seal ring 3, as 2290 rings, heat described garter spring and it is nested with on described metallic pipe coupling position corresponding to seal groove, gluing on the screw thread of intervalve then, intervalve is inserted gap location between described garter spring and the metallic pipe coupling, and then intervalve is progressively screwed in to the end of metallic pipe coupling by the cooperation of screw thread.The structure of Xing Chenging as shown in Figure 3 like this, two seal sections have been formed, one is the seal section that seal ring constitutes, and one is the seal section of the bonding back of the screw thread formation of intervalve and metallic pipe coupling, and the existing relatively SEALING FITTING of this structure and installation method has following characteristics:
1) in metallic pipe coupling and Glass Steel Tube joint, added an intervalve, mainly be because the processing request for sealing surface is very high under the hot environment, to go out high-precision sealing surface with Mould Machining at the very big Glass Steel Tube two ends of size and come the comparison difficulty, and adopt the intervalve of a bit of same material, then its machining accuracy can be higher, makes sealability better.
2) though at high temperature the difference of the thermal expansion coefficient of metallic material and glass fibre reinforced plastics can cause producing distortion between the two, but, fixes firmly by intervalve because being both the garter spring of metallic material, therefore the gap between intervalve and the metallic pipe coupling can not change substantially, and the seal section that makes the sealing circle constitute still has good sealing effect.
3) when mounted, adopted the warmed-up garter spring of first placement, the way of intervalve is inserted in the back between this garter spring and metallic pipe coupling, like this can be so that intervalve can not cause poor sealing in front end generation deformation because of the cause of seal ring in the installation process.
4) screw-thread fit of intervalve and metallic pipe coupling has two effects, the firstth, when intervalve being inserted into the metal tube bottom, can adopt the mode that progressively screws in, because insertion process need overcome the resistance of seal ring, adopt the screw-in mode conveniently to install, avoid distortion.The secondth, form engaged surface of contact on this part surface of intervalve and metallic pipe coupling, will help to improve the performance of sealing.
After intervalve 4 installed, earlier gluing on the outside thread of intervalve 4 twined glass cloth then to needed outside dimension, also wants gluing on the glass cloth surface when twining, wait adhesive curing after, promptly formed the sealing configuration of Glass Steel Tube of the present invention and metal tube.What specify is, present embodiment has also been offered the dovetail groove 21 of an annular on the metallic pipe coupling 20 and radially interface that Glass Steel Tube joint 10 contacts, like this when twining, because glue can invade in this dovetail groove 21, and after curing, form the bump that embeds dovetail groove 21 and match with its shape, this bump and Glass Steel Tube shell form as one.So just formed the joinery and its construction between this Glass Steel Tube joint and the metallic pipe coupling naturally.Constituted the defence line that another road stops the intrusion of extraneous fluid.Especially, because the thermal expansion coefficient of glass fibre reinforced plastic material is greater than metal, under the environment of high temperature, this joinery and its construction is airtight more.
In another embodiment, do not have to adopt the intervalve structure that comprises seal ring and garter spring, through testing, equally also reached the requirement of sealing under hot environment, this mainly is because the effect of above-mentioned joinery and its construction.
In another embodiment, can also on the internal surface of the outer surface of coil brace joint part and metallic pipe coupling, process respective threads, gluing on these two surfaces screws in coil brace described metal tube more earlier, has formed the defence line that stops that together extraneous fluid is invaded so again.
In view of the principle of seal structure that the present invention forms, significantly, this Glass Steel Tube and airtight Placement between the metal tube also can be applied to the airtight connection between two kinds of different materials of other thermal expansion coefficient.
Claims (10)
1, the structure that is tightly connected between two kinds of different heat expansion coefficient pipes, comprise first tube connector and be set in its outer second bigger tube connector of expansion coefficient, it is characterized in that, also comprise the intervalve that material is identical with second tubing, the internal surface of this intervalve is with described first the tube connector outer surface is airtight is connected, and the outer surface of this intervalve is connected with the internal surface of described second tube connector is airtight; The outer surface of described first tube connector has one group of seal groove, and is equiped with a seal ring in each seal groove respectively, a closely sheathed metal hoop on the outer surface of described intervalve corresponding to this group seal groove.
2, the structure that is tightly connected as claimed in claim 1 is characterized in that, first tubing is metal tube, and second tubing is Glass Steel Tube.
3, the structure that is tightly connected as claimed in claim 1 or 2, it is characterized in that, also offer the dovetail groove of an annular on described first tube connector and the radial surface that second tube connector contacts, be formed with a bump that is embedded in this dovetail groove and matches on the radial surface of the described second tube connector correspondence, constitute the joinery and its construction between this first tube connector and second tube connector with its shape.
4, the structure that is tightly connected as claimed in claim 1 or 2 is characterized in that, the length of described garter spring is greater than the axial length of this group seal groove.
5, the structure that is tightly connected as claimed in claim 1 or 2, it is characterized in that, described intervalve internal surface and the described first tube connector outer surface are provided with the shallow thread that cooperatively interacts, and be all bonding mutually with glue on the surface of contact of described intervalve and described first tube connector, second tube connector.
6, the seal connecting method between two kinds of different heat expansion coefficient pipes may further comprise the steps:
(a) open one group of seal groove at the outer surface of first tube connector, in each seal groove of first tube connector, place a seal ring, heat a metal hoop again and it is nested with on described first tube connector corresponding to the position of this group seal groove, then that a material is identical with second tubing intervalve inserts the gap location between the described garter spring and first tube connector;
(b) second tube connector is set in outer also realization of described intervalve and is tightly connected, thereby realize being tightly connected between first and second tubing.
7, seal connecting method as claimed in claim 6 is characterized in that, described first tubing is metal tube, and described second tubing is Glass Steel Tube.
As claim 6 or 7 described seal connecting methods, it is characterized in that 8, in the described step (a), the length of described garter spring is greater than the axial length of this group seal groove.
9, as claim 6 or 7 described seal connecting methods, it is characterized in that, described intervalve internal surface and the described first tube connector outer surface are provided with the shallow thread that cooperatively interacts, when step (a) is set in described intervalve outside first tube connector, at the internal surface of this intervalve and the outer surface gluing of first tube connector, rely on screw-thread fit that this intervalve is progressively screwed in this first tube connector then earlier.
10, seal connecting method as claimed in claim 7, it is characterized in that, also offer the dovetail groove of an annular on the metallic pipe coupling and the radial surface that the Glass Steel Tube joint contacts, in the described step (b), be on the outer surface of described intervalve, to twine glass cloth to needed outside dimension, when twining, want gluing on the glass cloth surface, after adhesive curing, promptly formed the sealing configuration of described Glass Steel Tube joint and metallic pipe coupling, simultaneously, the radial surface that contacts with metallic pipe coupling at the Glass Steel Tube joint is an integrally formed bump that is embedded in this dovetail groove and matches with its shape constitutes the joinery and its construction between this metallic pipe coupling and the Glass Steel Tube joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101038285A CN100441931C (en) | 2006-08-02 | 2006-08-02 | Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101038285A CN100441931C (en) | 2006-08-02 | 2006-08-02 | Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1904417A CN1904417A (en) | 2007-01-31 |
| CN100441931C true CN100441931C (en) | 2008-12-10 |
Family
ID=37673733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101038285A Expired - Fee Related CN100441931C (en) | 2006-08-02 | 2006-08-02 | Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100441931C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832721A (en) * | 2015-04-30 | 2015-08-12 | 生维国 | Composite metal pipe material |
| CN106609665B (en) * | 2015-10-27 | 2023-09-29 | 北京环鼎科技有限责任公司 | Slim hole array induction glass fiber reinforced plastic shell |
| CN109721031B (en) * | 2019-01-08 | 2022-05-10 | 中国工程物理研究院核物理与化学研究所 | Plug-in type I-131 absorption device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215310A (en) * | 1982-06-09 | 1983-12-14 | Honda Motor Co Ltd | Jointing method of metal pipe and fiber reinforced synthetic resin pipe |
| US4433862A (en) * | 1982-04-13 | 1984-02-28 | Otis Engineering Corporation | Pipe joint |
| US4715624A (en) * | 1985-06-24 | 1987-12-29 | Frye Henry A | Plastic to metal transition fitting |
| CN1080399C (en) * | 1995-12-05 | 2002-03-06 | 乔治费希尔管路系统公开股份有限公司 | Connection pipe fitting for pipe line |
| US6609729B2 (en) * | 2000-05-30 | 2003-08-26 | Tokai Rubber Industries, Ltd. | Resin hose connection method and resin hose connection structure produced by employing the method |
| CN2620810Y (en) * | 2003-06-26 | 2004-06-16 | 钱乐中 | Axial sealing anticorrusive internal and external covered non polar plastic steel pipe |
| CN2679459Y (en) * | 2003-07-07 | 2005-02-16 | 沧州明珠塑料股份有限公司 | Changover joint of steel/plastic pipe |
-
2006
- 2006-08-02 CN CNB2006101038285A patent/CN100441931C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433862A (en) * | 1982-04-13 | 1984-02-28 | Otis Engineering Corporation | Pipe joint |
| JPS58215310A (en) * | 1982-06-09 | 1983-12-14 | Honda Motor Co Ltd | Jointing method of metal pipe and fiber reinforced synthetic resin pipe |
| US4715624A (en) * | 1985-06-24 | 1987-12-29 | Frye Henry A | Plastic to metal transition fitting |
| CN1080399C (en) * | 1995-12-05 | 2002-03-06 | 乔治费希尔管路系统公开股份有限公司 | Connection pipe fitting for pipe line |
| US6609729B2 (en) * | 2000-05-30 | 2003-08-26 | Tokai Rubber Industries, Ltd. | Resin hose connection method and resin hose connection structure produced by employing the method |
| CN2620810Y (en) * | 2003-06-26 | 2004-06-16 | 钱乐中 | Axial sealing anticorrusive internal and external covered non polar plastic steel pipe |
| CN2679459Y (en) * | 2003-07-07 | 2005-02-16 | 沧州明珠塑料股份有限公司 | Changover joint of steel/plastic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1904417A (en) | 2007-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2804367C (en) | Electrical wiring for drill pipe, casing, and tubing | |
| EP0760898B1 (en) | Double walled insulated tubing and method of installing same | |
| EP1995505B1 (en) | A rotary compensating device used in a pipe under high pressure | |
| CN100441931C (en) | Sealing connection structure between two different heat expansion coefficient pipe materials and its connecting method | |
| US6719058B2 (en) | Multiple seal design for composite risers and tubing for offshore applications | |
| US20030107186A1 (en) | Redundant seal design for composite risers with metal liners | |
| CN104712865A (en) | Expansion compensation connecting pipe fitting | |
| CN200955390Y (en) | Inductive logging instrument | |
| CN210714497U (en) | Double-layer combined sleeve | |
| CN101832108B (en) | Vacuum oil tubing coupling | |
| CN102562030B (en) | A kind of shell for induction logging instrument and method for designing thereof | |
| CN201547424U (en) | Structure for connecting composite vacuum heat-insulating pipes | |
| US20070284873A1 (en) | Pipestring comprising composite pipe segments | |
| CN114809934A (en) | Cable type composite insulation pipe structure | |
| CN110030437B (en) | Buried pipeline | |
| RU2386009C2 (en) | Adiabatic column | |
| EA033576B1 (en) | Pipe forming method | |
| CN102121353A (en) | Split assembly heat-insulating oil pipe connecting structure | |
| CN201943598U (en) | Split assembled heat-insulating oil tube connecting structure | |
| CN201228831Y (en) | Universal joint compensating mechanism for pressure conduit | |
| CN110043195A (en) | Sealing ring and oil pick-up tube intubation system | |
| CN221054519U (en) | Direct-buried heat supply pipeline with direct-buried compensator device | |
| CN213743279U (en) | Special joint for adhesive composite flexible pipe | |
| CN217950280U (en) | Composite heat insulation pipe structure | |
| CN115045636B (en) | Hydraulic control intelligent well completion underground flow control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20170802 |