CN1995792A - Multiunit tube joint and method for processing same - Google Patents
Multiunit tube joint and method for processing same Download PDFInfo
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- CN1995792A CN1995792A CN 200610135170 CN200610135170A CN1995792A CN 1995792 A CN1995792 A CN 1995792A CN 200610135170 CN200610135170 CN 200610135170 CN 200610135170 A CN200610135170 A CN 200610135170A CN 1995792 A CN1995792 A CN 1995792A
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Abstract
The invention relates to a composite pipe joint and the manufacturing method. The pipe joint comprises gluing position where ends of two composite pipes with the same diameter are fixed together; pipe sleeve, of which two ends are set at the end zone of two composite pipes respectively; and elastic layer set on the outer surface of composite pipe and inner face of pipe sleeve. In machining the pipe sleeve is fixed at first, then the end face of composite pipe is coated with glue, then the pipe sleeve is welded, finally liquid elastic body is injected between the outer surface of composite pipe and the inner surface of pipe sleeve by the presetting gap in welding the pipe sleeve. The composite pipe joint manufactured by the invention comprises two fixations of gluing position between pipes and welding position of pipe sleeve so that the pipe joint can not be destroyed under the exogenic force such as crust fluctuation and so on. It is very suitable for connecting pipes with large diameter.
Description
Technical field:
The present invention relates to a kind of multiunit tube joint and processing method thereof.
Background technique:
In a single day buried pipeline that is used for conveyance fluid leaks, be very difficult and expensive when repairing.The main cause that pipeline takes place to leak is fluctuateed to its damage that causes by the flow-induced corrosion that carried or the earth's crust, wherein, because of flow-induced corrosion causes the position of leakage can relate to the whole pipeline that comprises pipe joint to pipeline, and cause the position of leakage mainly to concentrate on pipe joint to pipeline because of the earth's crust fluctuates, so the quality good or not of pipe joint can be directly connected to the working life of conveyance fluid pipeline.
Adopt composite pipe solve pipeline by the technology of flow-induced corrosion by known to the public.This composite pipe is normally made main pipe body by metallic material, and is coated with one deck plastics at the internal surface of this main pipe body, and its meaning is to want to utilize the rigidity of metal tube and the corrosion resistance of plastics to solve the easy leakage problem of pipeline.But, the connection that fatal defective of the composite pipe fitting of this kind structure is a pipe fitting, because the conveyance fluid pipeline has quite long distance usually, and plastics can not be after the pipe laying operation be finished again by hot melt or otherwise be coated in the internal surface of pipeline, promptly pipeline must adopt the structure that discrete composite pipe fitting connects at the scene.
The connection of two pipe fittings is adopted welding usually or is flexibly connected this dual mode, so-called welding be meant at the scene will adjacent two pipe fittings pass through behind the hot melt fixedly connected, and flexibly connect is to fix by link after flange by being installed in the pipe fitting two ends and the seal ring butt joint again, perhaps adopts the mode of socket joint to fix.Yet, with regard to composite pipe fitting, because the fusing point of the plastics in the composite pipe fitting is relatively low, if adopt the mode of welding to connect, the high temperature that its weld bond periphery is produced in the time of can be because of welding makes the plastic layer fusing, as long as and have in the pipeline just easily to be produced and leak by the zone of flow-induced corrosion; Though flexibly connect the problem that can solve the plastic layer fusing, but, to do the time spent very easily loosening being subjected to external force for active connection, and it can make pipeline directly leak after loosening, simultaneously, in flange or the seal ring of installing in the joint socket normally constitute by the rubber elastomeric material, and the elastic material of rubber-like is easily by flow-induced corrosion that carried, and then makes pipe joint can not realize sealing.
The name of No. 2791429 notice of authorization of Chinese patent is called the example that " can be used for the steel-plastic composite pipe that hot melt connects " provides a kind of composite pipe connection.The composite pipe that this patent proposed comprises three layers, and two-layer inside and outside it is steel pipe, and middle one deck is a plastic layer, and connecting between two pipe fittings is by the rigidity skin of two tube ends is peeled off, by a plastic joint that two pipe fittings are fixedly connected again.Though this kind Placement can not be destroyed plastic layer, because the employing plastics connect the strength deficiency of part, and material is more crisp, so this kind Placement is not suitable for the pipeline of larger caliber; Plastic layer because of this pipe fitting is set in the interlayer simultaneously, so the pipe fitting of this kind structure is not suitable for as carrying corrosive fluid.
No. 1416995 disclosed names of Chinese patent are called the another kind of mode that " method of pipeline butt welding and the pipeline that is welded into " provides a kind of pipe fitting welding.This patent adopts moving anchor clamps and decides the end regions that anchor clamps are clamped in two indentical tubes to be welded respectively, and be provided with the opposite conical surface that scribbles scolder of true dip direction in the end of two adapters to be welded, after with of the conical surface socket joint butt joint of moving anchor clamps with two pipes, utilize heating system to make the solder fusing at joint socket position, treat pipe to be welded together after the scolder cooling.Though this mode operating process that directly adds thermal weld is simple relatively, but, under normal conditions, the fusing point of scolder will be much larger than the fusing point of plastics, in to scolder heating process, while also melts the plastic layer of weld bond periphery, so this kind mode is not suitable for heating the composite pipe that is made of steel pipe and plastic layer.
In addition, the name of No. 2432425 notice of authorization of Chinese patent is called the technology that " the heat insulation welded joint of steel-plastic composite pipe " provides the welding composite pipe.The pipe joint that this patent proposed comprises and is welded on two tube end bellmouth spares to be welded and socket piece respectively, utilizes the mode of socket joint that pipe joint is docked, again by contacted girth welding makes it become as a whole to bellmouth spare and socket piece.Though this pipe joint is provided with thermal-protective coating and anticorrosive coat between bellmouth spare and socket piece, when welding, can protect the pipe fitting inner plastic layer not to be damaged to a certain extent, but, for bigbore pipe fitting, need just can finish between the two butt joint by hanging device and special tool, if be provided with thermal-protective coating and anticorrosive coat again, its butt joint is just difficult more; Simultaneously just rely on the pipe joint girth welding to realize connecting between two pipe fittings, this Placement is not firm, particularly for buried pipeline, is subjected to external force such as earth's crust fluctuation when it and does the time spent and very easily rupture; In addition, the sealing of this pipe joint is to rely on the rubber washer that is arranged in the bellmouth spare to finish, and the rubber washer of this kind structure must directly contact with the fluid that pipeline is carried, if what carried in the pipeline is corrosive fluid, do not have the effect of sealing after rubber washer is corroded, thereby cause pipeline leakage.
Summary of the invention:
Task of the present invention provides a kind of same interface that glueds joint and weld the dual mode connection pipe fitting that utilizes to improve its intensity, can not destroy the multiunit tube joint of composite pipe plastic layer simultaneously when welding.
Another task of the present invention provides a kind of method of processing above-mentioned multiunit tube joint.
For finishing above-mentioned task, multiunit tube joint proposed by the invention comprises that splicing portion and two ends that two same directly end faces of composite pipes are fixed together are installed in the pipe box of two composite pipe end regions respectively, and is arranged on the elastomer layer between composite pipe outer surface and the pipe box internal surface.
Described pipe box comprises two short pipe fittings, and an end of each root short pipe fitting extends radially inwardly internal diameter and the identical or akin convex edge of the external diameter of composite pipe, and its other end is that free end or free end are provided with flange.
The end face of described composite pipe is respectively arranged with the identical or essentially identical inclined-plane of direction opposite slope.Described composite pipe comprises metal tube and overlays on the plastic layer of this metal pipe internal surface.
The processing method of above-mentioned multiunit tube joint comprises following three steps:
1., the convex edge that will constitute two short pipe fittings of pipe box is separately fixed at the outer surface of two composite pipes, and makes two short pipe fittings just in time make the end face butt joint of two composite pipes after butt joint;
2., two end face area that the composite pipe of pipe box is installed are coated with the glue that both can be fixed together when solidifying;
3., with the free end of two short pipe fittings or be provided with the free end of flange and the end face butt joint back of two composite pipes to the formed girth welding of pipe box, and remain with at least one predetermined slit, and between the internal surface of the outer surface of composite pipe and pipe box, inject liquid elastomer by this slit, treat liquid elastomer solidify after again with the slit welded closure of reservation.
It is opposite and gradient is identical or the step on essentially identical inclined-plane that described step also comprises that the end face with two composite pipes is processed into direction respectively in 1..
The splicing portion that multiunit tube joint proposed by the invention adopts can be adhesively fixed the end face of two composite pipes, its glue can adopt by macromolecular material composite hot melt adhesive or metal-to-metal adhesive, the glue of these kinds is plastics and metallic material such as bonding nonpolar polyethylene well, its adhesion strength and not second to the intensity of electric arc welding, and hot melt adhesive or metal-to-metal adhesive also have certain performances such as acid resistant alkali; And pipe box can be by the mode combination of welding, and when welding, owing to leave certain intervals between pipe box and the pipe fitting, so, can not destroy the plastic layer of pipe fitting internal surface, simultaneously, this pipe joint comprises bonding and two Fixed Divisions of pipe box welding between the pipe fitting, pipe joint also can not be damaged under external force effects such as earth's crust fluctuation, be very suitable for connecting bigbore pipe fitting; In addition, between the outer surface of the internal surface of pipe box and pipe fitting elastomer layer is set also, this elastomer layer can further improve the counter-bending ability of pipe joint, makes two pipe fitting combinations more firmly.
Description of drawings:
Accompanying drawing 1 is an embodiment's of a multiunit tube joint proposed by the invention outward appearance cross-sectional view.
Embodiment:
Referring to Fig. 1, this figure provides an embodiment's of multiunit tube joint proposed by the invention overall appearance structure.Most preferred embodiment of this multiunit tube joint is to be used to connect the composite pipe 4 that is made of metal tube 41 and the plastic layer 42 that overlays on these metal tube 41 internal surfaces, and it comprises pipe box 1 and elastomer layer 2, and splicing portion 3 these three parts.
When the above-mentioned multiunit tube joint of processing, at first the end face 43 with two composite pipes 4 is processed into the identical or close inclined-plane of direction opposite slope, to constitute two short pipe fittings 11 of pipe box 1 and 12 convex edge 13 then and be separately fixed on the outer surface of two pre-connection composite pipe 4 ends, and make two short pipe fittings 11 and 12 that the end face 43 of two composite pipes 4 can be docked.Before short pipe fitting 11 and 12 butt joints, earlier be coated with metal-to-metal adhesive or hot melt adhesive at two end face 43 positions that the composite pipe 4 of pipe box 1 is installed, free end 14 with two short pipe fittings 11 and 12 docks again, also can make simultaneously end face 43 butt joints of two composite pipes 4, then the formed circumferential weld in pipe box 1 butt joint back is welded, should remain with one or two slit during to girth welding.If what the end face of composite pipe 4 43 applied is hot melt adhesive, can heat to hot melt adhesive by reserving gaps, make hot melt adhesive fusing back bonding, can also between the internal surface of the outer surface of composite pipe 4 and pipe box 1, inject the elastomer of liquid state in addition by this slit, treat that liquid elastomer layer solidifies the back and forms elastomer layer 2, last again with the slit welded closure of reserving.
Claims (6)
1, a kind of multiunit tube joint, it is characterized in that: this pipe joint comprises that splicing portion and two ends that two same directly end faces of composite pipes are fixed together are installed in the pipe box of two composite pipe end regions respectively, and is arranged on the elastomer layer between composite pipe outer surface and the pipe box internal surface.
2, multiunit tube joint according to claim 1, it is characterized in that: described pipe box comprises two short pipe fittings, and an end of each root short pipe fitting extends radially inwardly internal diameter and the identical or akin convex edge of the external diameter of composite pipe, and its other end is that free end or free end are provided with flange.
3, multiunit tube joint according to claim 1 is characterized in that: the end face of described composite pipe is respectively arranged with the identical or essentially identical inclined-plane of direction opposite slope.
4, multiunit tube joint according to claim 1 is characterized in that: described composite pipe comprises metal tube and overlays on the plastic layer of this metal pipe internal surface.
5, according to the processing method of claim 1 or 2 or 3 or 4 described multiunit tube joints, it is characterized in that may further comprise the steps:
1., the convex edge that will constitute two short pipe fittings of pipe box is separately fixed at the outer surface of two composite pipes, and makes two short pipe fittings just in time make the end face butt joint of two composite pipes after butt joint;
2., two end face area that the composite pipe of pipe box is installed are coated with the glue that both can be fixed together when solidifying;
3., with the free end of two short pipe fittings or be provided with the free end of flange and the end face butt joint back of two composite pipes to the formed girth welding of pipe box, and remain with at least one predetermined slit, and between the internal surface of the outer surface of composite pipe and pipe box, inject liquid elastomer by this slit, treat liquid elastomer solidify after again with the slit welded closure of reservation.
6, the described processing method of root root claim 5 is characterized in that: it is opposite and gradient is identical or the step on essentially identical inclined-plane that described step also comprises that the end face with two composite pipes is processed into direction respectively in 1..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101351706A CN100543349C (en) | 2006-12-29 | 2006-12-29 | Multiunit tube joint and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101351706A CN100543349C (en) | 2006-12-29 | 2006-12-29 | Multiunit tube joint and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995792A true CN1995792A (en) | 2007-07-11 |
| CN100543349C CN100543349C (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101351706A Expired - Fee Related CN100543349C (en) | 2006-12-29 | 2006-12-29 | Multiunit tube joint and processing method thereof |
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| CN (1) | CN100543349C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102787A (en) * | 2011-02-21 | 2011-06-22 | 河北建投宝塑管业有限公司 | Flexible composite connection pipe fitting for large-aperture plastic pipeline |
| CN102131611A (en) * | 2008-08-27 | 2011-07-20 | 新日本制铁株式会社 | Liquid phase diffusion bonding pipe joint and manufacturing method therefor |
| CN106439330A (en) * | 2016-11-02 | 2017-02-22 | 崔咪笑 | Rigid tube connecting piece with end provided with convex ring |
| CN107642649A (en) * | 2017-09-22 | 2018-01-30 | 中建八局第二建设有限公司 | A kind of construction pressure-resistant pipeline and its connecting installation structure |
| CN108599063A (en) * | 2018-05-21 | 2018-09-28 | 深圳市沃尔核材股份有限公司 | The connection method and connection structure of a kind of wind tower with two tube type bus |
| CN108799650A (en) * | 2018-07-27 | 2018-11-13 | 北京中恒永信科技有限公司 | A kind of coated pipeline welding structure and its welding method |
| CN112066102A (en) * | 2020-08-17 | 2020-12-11 | 李凯龙 | Hydraulic engineering pipe connection sealing device |
| CN112145824A (en) * | 2019-06-28 | 2020-12-29 | 国家能源投资集团有限责任公司 | Pipe fitting joint sealing structure and joint protection method |
| WO2022105363A1 (en) * | 2020-11-20 | 2022-05-27 | 上海纳铁福传动***有限公司 | Shaft tube joint structure of drive shaft |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225913B (en) * | 2007-01-15 | 2010-12-01 | 北京安科管道工程科技有限公司 | Method for joining novel bilayer structure pipeline and uses |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634040A (en) * | 1986-03-10 | 1987-01-06 | Savard Donald D | Process for welding pipe ends and an insulating ring therefor |
| US4724975A (en) * | 1986-06-18 | 1988-02-16 | Cbi Research Corporation | High-pressure structure made of rings with peripheral weldments of reduced thickness |
| CN2116140U (en) * | 1991-11-14 | 1992-09-16 | 天津大学 | Closed pipe joint of memory alloy |
| CN2186339Y (en) * | 1994-01-25 | 1994-12-28 | 营口市橡胶布件厂 | Steel-rubber compound tube with welding joint |
| CN1353264A (en) * | 2000-11-15 | 2002-06-12 | 余兴基 | Pipe joint with conic connection |
| CN2459518Y (en) * | 2000-12-19 | 2001-11-14 | 王庆忠 | Compensation type pipe fitting plug-in connector |
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2006
- 2006-12-29 CN CNB2006101351706A patent/CN100543349C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131611A (en) * | 2008-08-27 | 2011-07-20 | 新日本制铁株式会社 | Liquid phase diffusion bonding pipe joint and manufacturing method therefor |
| CN102131611B (en) * | 2008-08-27 | 2013-12-04 | 新日铁住金株式会社 | Liquid phase diffusion bonding pipe joint and manufacturing method therefor |
| CN102102787A (en) * | 2011-02-21 | 2011-06-22 | 河北建投宝塑管业有限公司 | Flexible composite connection pipe fitting for large-aperture plastic pipeline |
| CN106439330A (en) * | 2016-11-02 | 2017-02-22 | 崔咪笑 | Rigid tube connecting piece with end provided with convex ring |
| CN106439330B (en) * | 2016-11-02 | 2019-01-29 | 崔咪笑 | A kind of end is equipped with the hard tube connector of bulge loop |
| CN107642649A (en) * | 2017-09-22 | 2018-01-30 | 中建八局第二建设有限公司 | A kind of construction pressure-resistant pipeline and its connecting installation structure |
| CN108599063B (en) * | 2018-05-21 | 2024-01-05 | 深圳市沃尔核材股份有限公司 | Connection method and connection structure of two tubular buses for wind power tower |
| CN108599063A (en) * | 2018-05-21 | 2018-09-28 | 深圳市沃尔核材股份有限公司 | The connection method and connection structure of a kind of wind tower with two tube type bus |
| CN108799650A (en) * | 2018-07-27 | 2018-11-13 | 北京中恒永信科技有限公司 | A kind of coated pipeline welding structure and its welding method |
| CN112145824A (en) * | 2019-06-28 | 2020-12-29 | 国家能源投资集团有限责任公司 | Pipe fitting joint sealing structure and joint protection method |
| CN112066102A (en) * | 2020-08-17 | 2020-12-11 | 李凯龙 | Hydraulic engineering pipe connection sealing device |
| WO2022105363A1 (en) * | 2020-11-20 | 2022-05-27 | 上海纳铁福传动***有限公司 | Shaft tube joint structure of drive shaft |
| US11940019B2 (en) | 2020-11-20 | 2024-03-26 | Shanghai Gkn Huayu Driveline Systems Company Limited | Shaft tube joint structure of drive shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100543349C (en) | 2009-09-23 |
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Legal Events
| Date | Code | Title | Description |
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| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Benxi Economic Development Zone Benxi Steel and Steel Tube Co., Ltd. Assignor: Chen Zhen Contract record no.: 2012210000065 Denomination of invention: Multiunit tube joint and method for processing same Granted publication date: 20090923 License type: Exclusive License Open date: 20070711 Record date: 20120514 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20070711 Assignee: Benxi Economic Development Zone Benxi Steel and Steel Tube Co., Ltd. Assignor: Chen Zhen Contract record no.: 2012210000065 Denomination of invention: Multiunit tube joint and method for processing same Granted publication date: 20090923 License type: Exclusive License Record date: 20120514 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20151229 |
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| EXPY | Termination of patent right or utility model |