CN202349404U - Bi-metal composite pipe with end parts being with external threads - Google Patents
Bi-metal composite pipe with end parts being with external threads Download PDFInfo
- Publication number
- CN202349404U CN202349404U CN2011204275471U CN201120427547U CN202349404U CN 202349404 U CN202349404 U CN 202349404U CN 2011204275471 U CN2011204275471 U CN 2011204275471U CN 201120427547 U CN201120427547 U CN 201120427547U CN 202349404 U CN202349404 U CN 202349404U
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- Prior art keywords
- pipe
- matrix
- basal body
- metal composite
- adapter ring
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Abstract
The utility model relates to a bi-metal composite pipe with end parts being with external threads. A lining pipe is composited in a matrix pipe; adapter rings are welded on the two ends of the matrix pipe and the lining pipe; a circle of weld joint is formed between one external ends of the matrix pipe and the lining pipe and each adapter ring; and pipe threads are processed on the external surfaces of the end parts of the matrix pipe and the external surfaces of the adapter rings. When two bi-metal composite pipes are connected through the pipe threads by a coupling, corrosion medium cannot be in contact with the end parts of the matrix pipe so as not to enter into the matrix pipe to corrode the matrix pipe from a clearance between the matrix pipe and the lining pipe, so that the matrix pipe cannot be corroded, electrochemical corrosion caused by potential difference between the ends of the matrix pipe and lining layer materials is avoided, and the corrosion resistance of the composite pipe is ensured. According to the bi-metal composite pipe with the structure, the technical problem that the threads of the composite pipe all adopt corrosion-resisting alloy so as to be easy to glue is avoided, the technical problem of thread connection of the bi-metal composite pipe is fundamentally solved, and the bi-metal composite pipe can be popularized and used in technical fields such as petroleum and chemical industry.
Description
Technical field
The utility model belongs to the pipe technology field of transport gas and liquid, is specifically related to the point of attachment of composite bimetal pipe end.
Background technique
In order to prevent the metallic conduit corrosion, in metallic conduit, install the liner of processing with resistant material additional at present and come the protective money metal conduit, internal lining pipe is generally used Stainless Steel Tube, is prepared into composite bimetal pipe.Composite bimetal pipe technology and production development are very rapid in recent years; Composite bimetal pipe has obtained wide popularization and application in fields such as oil, gas chemical industries with characteristics such as its high performance-price ratios; Remarkable economic efficiency and social benefit have been obtained; The application of composite bimetal pipe has solved puzzlement chemical industry, petroleum technology field for many years effectively and has adopted the anti-corrosion weak effect of steel pipe, adopts the high technical barrier of corrosion resistant alloy pipe cost.
In the composite bimetal pipe application process; Adopt scyewed joint to occupy certain ratio, but, tend to cause the corrosion of scyewed joint position to accelerate because composite bimetal pipe scyewed joint position structure is different; Perhaps cause the screw thread thread gluing because of the screw thread position is mishandling; Therefore can develop and both improve pipe thread connection place corrosion resisting property, guarantee the pipe thread structure of scyewed joint place mechanical property again, seem very necessary and important for further applying of composite bimetal pipe product.
Summary of the invention
The utility model problem to be solved is to overcome the shortcoming that above-mentioned composite bimetal pipe pipe thread connects, and a kind of corrosion resistance and good of pin, long service life, the production cost is low, using scope the is wide externally threaded composite bimetal pipe of end band are provided.
Solving the problems of the technologies described above the technological scheme that is adopted is: in basal body pipe, be compounded with internal lining pipe; The two ends of basal body pipe and internal lining pipe are welded with adapter ring; Form a circle weld seam between the outer end of basal body pipe and internal lining pipe and the adapter ring, basal body pipe end outer surface and adapter ring outer surface are processed with pipe thread.
Basal body pipe end outer surface of the utility model and adapter ring outer surface pipe thread length L 1 are at least 3 times of adapter ring length L 2.
The basal body pipe of the utility model and the outer end of internal lining pipe are in same plane.
The end welding that the utility model is employed in composite bimetal pipe connects adapter ring; The end outer surface of composite bimetal pipe and the outer surface of adapter ring are processed with pipe thread; When two composite bimetal pipes connect through pipe thread; Make aggressive medium not contact, enter into basal body pipe internal corrosion basal body pipe, thereby guaranteed that basal body pipe is not corroded from the gap between basal body pipe and the internal lining pipe with the basal body pipe end; Can not produce electrochemical corrosion because of potential difference yet, guarantee the decay resistance of composite pipe because of matrix pipe end and lining material.The composite bimetal pipe of this structure is prone to the technical barrier of thread gluing when having avoided the composite pipe screw thread all to adopt corrosion resisting alloy, fundamentally solved the technical barrier of composite bimetal pipe scyewed joint, can promote the use of in technical fields such as oil and chemical industry.
Description of drawings
Fig. 1 is an embodiment's of the utility model a structural representation.
Among the figure, 1-basal body pipe, 2-internal lining pipe, 3-weld seam, 4-adapter ring, 5-pipe thread.
Embodiment
To the utility model further explain, but the utility model is not limited to these embodiments below in conjunction with accompanying drawing and embodiment.
In Fig. 1, the externally threaded composite bimetal pipe of end band of present embodiment is made up of basal body pipe 1, internal lining pipe 2, weld seam 3, adapter ring 4, pipe thread 5 connections.
In basal body pipe 1, adopt detonation, hydraulic pressure or other method to be compounded with internal lining pipe 2, the basal body pipe material is selected any one in the carbon steel tubes such as 20 steel, 20G steel, L245, L360, X60, X65, X70 for use; In the corrosion resistant alloy pipes such as lining tubing matter selects 304 for use, 316L stainless steel, 2205 two phase stainless steels, 825,625 nickel-base alloy stainless steels, titanium pipe, zirconium pipe any one.The axial outer end of the axial outer end of basal body pipe 1 and internal lining pipe 2 is in same plane, and the two ends of basal body pipe 1 and internal lining pipe 2 are welded with adapter ring 4, forms a circle weld seam 3 between the outer end of basal body pipe 1 and internal lining pipe 2 and the adapter ring 4.The outer surface of the end outer surface of basal body pipe 1 and adapter ring 4 is processed with pipe thread 5; Basal body pipe 1 end outer surface and adapter ring 4 outer surface pipe thread length L 1 are 3 times of adapter ring 4 length L 2, and the concrete data of basal body pipe 1 end outer surface and adapter ring 4 outer surface pipe thread 5 length L 1 should be come concrete definite according to the external diameter of mechanical design handbook and basal body pipe 1.The concrete data of the cone angle at basal body pipe 1 end outer surface and adapter ring 4 outer surface processing tube screw threads 5 positions should be come concrete definite according to the external diameter of mechanical design handbook and basal body pipe 1.The externally threaded composite bimetal pipe of this end band; Can adopt and connect hoop a composite bimetal pipe and another root composite bimetal pipe link conveying corrosion liquid or etchant gas; Make corrosion liquid or etchant gas not contact with the basal body pipe end; Enter into basal body pipe 1 internal corrosion basal body pipe 1 from the gap between basal body pipe 1 and the internal lining pipe 2, avoided corrosion liquid and etchant gas leakage pollution environment, prolonged the working life of conveyance conduit; Can not produce electrochemical corrosion because of potential difference yet, guarantee the decay resistance of composite bimetal pipe because of matrix pipe end and internal lining pipe 2 materials.The composite bimetal pipe of this structure is prone to the technical barrier of thread gluing when having avoided the composite pipe screw thread all to adopt corrosion resisting alloy, solved the technical problem of composite bimetal pipe scyewed joint.
In the present embodiment, the outer surface of the end outer surface of basal body pipe 1 and adapter ring 4 is processed with pipe thread 5, and basal body pipe 1 end outer surface and adapter ring 4 outer surface pipe thread length L 1 are 4 times of adapter ring 4 length L 2.The connecting relation of other component and component is identical with embodiment 1.
Also can design the externally threaded composite bimetal pipe of end band of other a kind of concrete structure according to above-mentioned principle, but all within the protection domain of the utility model.
Claims (3)
1. externally threaded composite bimetal pipe of end band; In basal body pipe (1), be compounded with internal lining pipe (2); It is characterized in that: the two ends of basal body pipe (1) and internal lining pipe (2) are welded with adapter ring (4); Form a circle weld seam (3) between the outer end of basal body pipe (1) and internal lining pipe (2) and the adapter ring (4), basal body pipe (1) end outer surface and adapter ring (4) outer surface are processed with pipe thread (5).
2. according to the externally threaded composite bimetal pipe of the described end of claim 1 band, it is characterized in that: described basal body pipe (1) end outer surface and adapter ring (4) outer surface pipe thread length L 1 are at least 3 times of adapter ring (4) length L 2.
3. according to the externally threaded composite bimetal pipe of the described end of claim 1 band, it is characterized in that: the outer end of described basal body pipe (1) and internal lining pipe (2) is in same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204275471U CN202349404U (en) | 2011-11-01 | 2011-11-01 | Bi-metal composite pipe with end parts being with external threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204275471U CN202349404U (en) | 2011-11-01 | 2011-11-01 | Bi-metal composite pipe with end parts being with external threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349404U true CN202349404U (en) | 2012-07-25 |
Family
ID=46538411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204275471U Expired - Lifetime CN202349404U (en) | 2011-11-01 | 2011-11-01 | Bi-metal composite pipe with end parts being with external threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2731449C1 (en) * | 2019-10-09 | 2020-09-02 | Общество с ограниченной ответственностью "Новые Трубные Технологии" (ООО "НТТ") | Composite glass adapter for laying pressure and pressure-free pipelines by microtunneling |
| CN117108834A (en) * | 2023-10-24 | 2023-11-24 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
-
2011
- 2011-11-01 CN CN2011204275471U patent/CN202349404U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2731449C1 (en) * | 2019-10-09 | 2020-09-02 | Общество с ограниченной ответственностью "Новые Трубные Технологии" (ООО "НТТ") | Composite glass adapter for laying pressure and pressure-free pipelines by microtunneling |
| CN117108834A (en) * | 2023-10-24 | 2023-11-24 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
| CN117108834B (en) * | 2023-10-24 | 2024-01-02 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
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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 |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |