CN201680082U - Expandable duplex metal pipe for composite pipe - Google Patents
Expandable duplex metal pipe for composite pipe Download PDFInfo
- Publication number
- CN201680082U CN201680082U CN2010202943290U CN201020294329U CN201680082U CN 201680082 U CN201680082 U CN 201680082U CN 2010202943290 U CN2010202943290 U CN 2010202943290U CN 201020294329 U CN201020294329 U CN 201020294329U CN 201680082 U CN201680082 U CN 201680082U
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- Prior art keywords
- pipe fitting
- pipe
- bimetal
- interfacing
- expanded
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Abstract
The utility model discloses an expandable duplex metal pipe for a composite pipe, which comprises an outer locking sleeve which is arranged on the outer wall of the composite pipe, and a corrosion-resistant metal interfacing which is arranged on the inner wall of the composite pipe, wherein the inner wall of the outer locking sleeve and the outer wall of the interfacing are provided with cogs, and the inner wall of the end head of the outer locking sleeve is provided with an annular outer locking sleeve retaining ring which is in a protruding structure; and a corrosion-resistant metal extendable short pipe which is arranged at the end head of the interfacing is connected with the interfacing into a whole. Compared with the prior art, the utility model is suitable for connection between various composite pipes, the expansion of the interfaces of pipes is strong, and so the utility model is suitable for being expanded to the connection of various interfaces such as welding, lathedog, buckling, flange, loose joint and the like; the utility model can be better used in the field of medium and high pressure, and the pressure bearing level of joints of the pipes can be improved; and the utility model has the advantages of corrosion resistance, no leakage, high safety factor, simple structure, strong practicality, easy processing and high performance price ratio.
Description
Technical field
The utility model relates to the pipeline connection and uses pipe fitting, particularly relates to a kind of composite pipe of anticorrosive coat, skeleton enhancement layer and external protection that comprises and can expand pipe fitting with bimetal.
Background technique
At present, China's composite pipe is used more extensive, because this tubing not only has the anti-pressure ability of high pressure tubing, and advantage such as corrosion-resistant, wear-resisting, the non-scaling, the water resistance that have had both macromolecular material be little, be applied to industries such as oil, chemical industry, mine, when transferring oil, gas, water and extraordinary fluid, shown good performance.Use in the process of composite pipe in reality, the tubing that production performance is good is more or less freely, but match not only corrosion-resistant but also can anti-high pressure will be arranged, and but difficulty comparatively of the suitable pipe fitting of price.
Now commonly used is electric heating fusion welding pipe fitting, and its advantage is that contact with medium can corrosion protection, but the anti-pressure ability of this pipe fitting a little less than, general work pressure is 1Mpa--4Mpa, can't work in the mesohigh field, in the 5Mpa--32Mpa scope.
The pipe fitting that uses in the mesohigh field can be divided three classes at present, and a class is the Ordinary Steel metal pipe element, solved pipe fitting pressure-bearing problem, but pipe fitting is perishable, easily causes leakage; Two classes are moulded spray (being coated with) for the Ordinary Steel metal inner lining and are moulded (macromolecule) and carry out anti-corrosion treatment, this pipe fitting has solved the problem of pipe fitting pressure-bearing, improved the Corrosion Protection of pipe fitting short-term, but this liner is moulded spray (being coated with) and is moulded (macromolecule) and easily come off, separate in actual application, causes the corrosion leakage hidden danger of use; Three classes are pipe fittings of making of noncorroding metal, and this pipe fitting has solved pressure-bearing and Corrosion Protection, but cost is too high, cause obstruction for the application of composite pipe.
The claimant had once applied for the utility model patent of a key name for " a kind of bimetal pipe fitting that is used for steel skeleton plastic clad pipe " on February 21st, 2008, granted patent number is ZL200820062215.6; And applied for the utility model patent of a key name for " a kind of bimetal pipe fitting that is used for composite pipe " on October 8th, 2009, granted patent number is ZL200920312094.0.The bimetal pipe fitting of above-mentioned two patent disclosures comprises the interior interfacing of noncorroding metal and the external fastening element of common metal, interface is clip connected or screw thread screwed connection, solved the pressure-bearing problem of pipe fitting, and reached with the anticorrosive of medium contact segment and reduced the pipe fitting cost; But in further research and development of products process, the claimant finds that there is the single defective of interface in above-mentioned two kinds of bimetal pipe fittings, and the anticreep groove has the dropout phenomenon unavoidably in application, has also found a kind of more perfect bimetal pipe fitting simultaneously.
The model utility content
The purpose of this utility model is exactly at the deficiencies in the prior art, provide a kind of bimetal that is used for connecting between composite pipe can expand pipe fitting, this bimetal can be expanded pipe fitting and not only can use in the mesohigh field, improve tubing joint pressure-bearing grade, simultaneously corrosion-resistant, do not have and reveal, the safety coefficient height, and pipe fitting interface Placement can expand, and processing simple in structure, safe and convenient to use, easy, cost are low.
For achieving the above object, the technical solution of the utility model is as follows:
The bimetal that is used for composite pipe that the utility model proposes can be expanded pipe fitting; the internal layer of described composite pipe is that anticorrosive coat, the skin of fed sheet of a media is the skeleton enhancement layer for protective layer, mesosphere, and wherein the reinforcing material of skeleton enhancement layer can be steel band or steel wire or wire rope or steel wire net-belt or fiber guipure or cellosilk or textile rope or glass etc.Described bimetal can be expanded the interior interfacing of anti-(anti-) corroding metal that pipe fitting comprises the outer lock tube of the common metal that places the composite pipe outer wall and places the composite pipe inwall, and outer lock tube inwall and interior interfacing outer wall are equipped with the teeth of evagination anticreep.Described outer lock tube termination inwall is provided with the outer lock tube shelves ring of annular that is protruding structure, and liner head end has extension short tube and interior interfacing to be linked into a whole.
One end of described extension short tube links to each other with interior interfacing, and the outer wall of extension short tube the other end termination (as the interface of pipe fitting) is provided with connection interface, and described connection interface can be processed as required or expand and be various ways.According to applying working condition and execution conditions, described connection interface can be processed as welding junction, when connecting between composite pipe, can expand pipe fitting to the described bimetal of two sections composite pipe ends at the scene and be welded to connect by welding junction.Perhaps when plant produced assembling pipe fitting,, also connection interface processing can be expanded to clip interface or threaded coupling or flange-interface or withhold interface or union interface etc. according to applying working condition and construction requirement; When the scene carries out connecting between composite pipe, can expand pipe fitting according to the connection interface of having expanded to the described bimetal of two sections composite pipe ends and carry out machinery connection fast, the described bimetal of two sections composite pipe ends can be expanded and be provided with sealing gasket between the pipe fitting during mechanical connection.
It is anti-tripping that the liner head end head outer wall that links to each other with the extension short tube is provided with the ring lining head that is the flanging protruding structure, and the anti-tripping and outer lock tube shelves of interior interfacing ring matches, and interfacing is anti-tripping in promptly links to each other with the end face of composite pipe end face with outer lock tube shelves ring respectively.The internal diameter of described outer lock tube shelves ring is greater than the anti-tripping external diameter of interior interfacing.Outer lock tube shelves ring and anti-tripping being used of interior interfacing are in order to prevent that interior interfacing is to the composite pipe outer displacement.During use, earlier external lock is placed on the outer wall of composite pipe termination, then the liner screw plug is gone into the inwall of composite pipe termination, use interfacing in the hydraulic pressure securing means internal expanding, the outer lock tube of outer locking after assembling outer lock tube and interior interfacing, can expand pipe fitting and composite pipe purpose of connecting to reach described bimetal, make the anti-tripping purpose that is used that reaches of outer lock tube shelves ring and interior interfacing simultaneously, therefore the internal diameter of outer lock tube shelves ring should be greater than the anti-tripping external diameter of interior interfacing.
According to the characteristics of applying working condition and fed sheet of a media, described interior interfacing is the interior interfacing of anti-(anti-) corroding metal, and described extension short tube can be stainless steel or copper or nickel alloy or titanium alloy or aluminum alloy etc. for anti-(anti-) corroding metal pipe.Described outer lock tube, anti-tripping, the outer lock tube shelves of interior interfacing ring all adopt common metal.Described bimetal can be expanded length, the wall thickness of the interior interfacing of pipe fitting, outer lock tube, the depth of teeth, can adjust according to applying working condition; When pressure rating was higher, the length of interior interfacing, outer lock tube length, wall thickness thicker (wall thickness that comprises the extension short tube), teeth was darker; When pressure rating was low, the length of interior interfacing, outer lock tube was corresponding shorter, and wall thickness is thin (wall thickness that comprises the extension short tube), and teeth are more shallow.
Compared with prior art, the beneficial effects of the utility model are: be applicable to the connection between various composite pipes, and pipe fitting interface expansion is strong, be applicable to be extended to welding, clip, withhold, multiple interfaces such as flange, loose joint connects; Can in the mesohigh field, use better, improve tubing joint pressure-bearing grade; By the anti-displacement function of interfacing in improving, increased the safety coefficient of pipe fitting; Corrosion-resistant, do not have and leak the safety coefficient height; Processing simple in structure, practical, easy, cost performance height.
Description of drawings
Fig. 1 is the longitudinal sectional view that bimetal can be expanded pipe fitting.
Fig. 2 is that connection interface is expanded the longitudinal sectional view that can expand pipe fitting for the bimetal of clip interface.
Fig. 3 is that connection interface is expanded the longitudinal sectional view that can expand pipe fitting for the bimetal of threaded coupling.
Fig. 4 is the longitudinal sectional view that bimetal that connection interface is processed as welding junction can be expanded pipe fitting.
Number in the figure is as follows:
1 composite pipe, 2 outer lock tubes
Interfacing 4 interior interfacings are anti-tripping in 3
5 outer lock tube shelves encircle 6 extension short tubes
7 teeth, 8 threaded couplings
9 welding junctions, 10 clip interfaces
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is further described.
Embodiment one
As shown in Figure 1 and Figure 2.Make a kind of bimetal that is used for composite pipe and can expand pipe fitting, described bimetal can be expanded the interior interfacing of being made by stainless steel 3 that pipe fitting comprises the outer lock tube of being made by common metal 20# carbon steel 2 that places composite pipe 1 outer wall and places composite pipe 1 inwall, and outer lock tube 2 inwalls and interior interfacing 3 outer walls are equipped with teeth 7.Outer lock tube 2 termination inwalls are provided with the outer lock tube shelves ring 5 of annular that is protruding structure, and it is anti-tripping 4 that interior interfacing 3 termination outer walls are welded with the ring lining head that is the flanging protruding structure, and outer lock tube shelves ring 5 matches with interior interfacing anti-tripping 4.Interior interfacing 3 ends of interfacing anti-tripping 4 in being provided with have the extension short tube of being made by the stainless steel thick walled tube 6 to be linked into a whole with interior interfacing 3.One end of extension short tube 6 links to each other with interior interfacing 3, and the outer wall of extension short tube 6 the other end terminations is provided with connection interface; For the ease of connecting fast in the building site, during the processing pipe fitting described connection interface being expanded is clip interface 10.
During use, choose the composite pipe 1 of two sections long respectively 10000mm, internal diameter 100mm, external diameter 125mm; The complete outer lock tube 2 that then respectively two cover internal diameter 121mm, external diameter 132mm, long 200mm, outer lock tube shelves is encircled 5 internal diameter 119mm places the termination outer wall of two sections composite pipes 1; Then interfacing 3 in (at the extension short tube 6 termination outer walls expansion moulding clip interfaces 10) of two making moulding is filled in two sections composite pipe 1 terminations respectively, interior interfacing 3 external diameter 104mm, internal diameter 90mm, long 195mm, extension short tube 6 long 105mm, the anti-tripping 4 external diameter 118mm of interior interfacing, thickness 5mm; Assemble outer lock tube 2 and interior interfacing 3 backs interfacing 3 in the hydraulic pressure securing means internal expanding, the outer lock tube 2 of outer locking.After described bimetal can be expanded pipe fitting and composite pipe 1 is connected, carry out the connection of 1 of two sections composite pipe by clip interface 10, the described bimetal of two sections composite pipe 1 ends can be expanded and be provided with sealing gasket between the pipe fitting.
Embodiment two
As Fig. 1, shown in Figure 3.The place identical with embodiment one be repeated description no longer, and difference is: during the processing pipe fitting described connection interface expanded and be threaded coupling 8, carry out the connection of 1 of two sections composite pipe by threaded coupling 8.Interior interfacing 3 and extension short tube 6 are made by titanium alloy.
Embodiment three
As Fig. 1, shown in Figure 4.The place identical with embodiment one be repeated description no longer, and difference is: beat the slope mouth at extension short tube 6 termination outer walls during the processing pipe fitting, described connection interface is processed as welding junction 9.At the construction field (site), directly carry out the connection of 1 of two sections composite pipe by welding, not be used in sealing gasket is set between the pipe fitting at welding junction 9 places.
Embodiment four
The place identical with embodiment one be repeated description no longer, and difference is: during the processing pipe fitting described connection interface expanded and be flange-interface, carry out the connection of 1 of two sections composite pipe by flange-interface.
Embodiment five
The place identical with embodiment one be repeated description no longer, and difference is: during the processing pipe fitting described connection interface is expanded to withholding interface, carried out the connection of 1 of two sections composite pipe by withholding interface.
Embodiment six
The place identical with embodiment one be repeated description no longer, and difference is: during the processing pipe fitting described connection interface expanded and be the union interface, carry out the connection of 1 of two sections composite pipe by the union interface.
Claims (10)
1. a bimetal that is used for composite pipe can be expanded pipe fitting, described bimetal can be expanded the interior interfacing (3) that pipe fitting comprises the outer lock tube (2) that places composite pipe (1) outer wall and places composite pipe (1) inwall, outer lock tube (2) inwall and interior interfacing (3) outer wall are equipped with teeth (7), it is characterized in that: outer lock tube (2) termination inwall is provided with the annular outer lock tube shelves ring (5) that is protruding structure, and interior interfacing (3) end has extension short tube (6) and interior interfacing (3) to be linked into a whole.
2. bimetal according to claim 1 can be expanded pipe fitting, it is characterized in that: an end of extension short tube (6) links to each other with interior interfacing (3), and the outer wall of extension short tube (6) the other end termination is provided with connection interface.
3. bimetal according to claim 2 can be expanded pipe fitting, it is characterized in that: when connecting between composite pipe (1), the described bimetal of two sections composite pipes (1) end can be expanded pipe fitting and connect by described connection interface.
4. can expand pipe fitting according to claim 2 or 3 described bimetals, it is characterized in that: described connection interface is the welding junction (9) of processing.
5. can expand pipe fitting according to claim 2 or 3 described bimetals, it is characterized in that: described connection interface is clip interface (10) or threaded coupling (8) or the flange-interface of expanding or withholds interface or the union interface.
6. can expand pipe fitting according to the arbitrary described bimetal of claim 1 to 3, it is characterized in that: interior interfacing (3) termination outer wall is provided with the ring lining head that is the flanging protruding structure anti-tripping (4), and interior interfacing anti-tripping (4) matches with outer lock tube shelves ring (5).
7. bimetal according to claim 5 can be expanded pipe fitting, it is characterized in that: when connecting between composite pipe (1), the described bimetal of two sections composite pipes (1) end can be expanded and be provided with sealing gasket between the pipe fitting.
8. bimetal according to claim 6 can be expanded pipe fitting, it is characterized in that: the internal diameter of outer lock tube shelves ring (5) is greater than the external diameter of interior interfacing anti-tripping (4).
9. can expand pipe fitting according to the arbitrary described bimetal of claim 1 to 3, it is characterized in that: interior interfacing (3) is the interior interfacing of noncorroding metal.
10. can expand pipe fitting according to the arbitrary described bimetal of claim 1 to 3, it is characterized in that: extension short tube (6) is the noncorroding metal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202943290U CN201680082U (en) | 2010-08-17 | 2010-08-17 | Expandable duplex metal pipe for composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202943290U CN201680082U (en) | 2010-08-17 | 2010-08-17 | Expandable duplex metal pipe for composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680082U true CN201680082U (en) | 2010-12-22 |
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ID=43345126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202943290U Expired - Fee Related CN201680082U (en) | 2010-08-17 | 2010-08-17 | Expandable duplex metal pipe for composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973105A (en) * | 2018-08-16 | 2018-12-11 | 宜昌中南精密钢管有限公司 | A kind of forming frock and method of inner liner stainless steel multiple tube |
| CN114352210A (en) * | 2022-01-06 | 2022-04-15 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Composite material oil pipe |
-
2010
- 2010-08-17 CN CN2010202943290U patent/CN201680082U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973105A (en) * | 2018-08-16 | 2018-12-11 | 宜昌中南精密钢管有限公司 | A kind of forming frock and method of inner liner stainless steel multiple tube |
| CN108973105B (en) * | 2018-08-16 | 2023-10-24 | 宜昌中南精密钢管有限公司 | Forming tool and method for lining stainless steel composite pipe |
| CN114352210A (en) * | 2022-01-06 | 2022-04-15 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Composite material oil pipe |
| CN114352210B (en) * | 2022-01-06 | 2023-11-28 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | Composite material oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20160817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |