CN206973094U - A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly - Google Patents
A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly Download PDFInfo
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- CN206973094U CN206973094U CN201720867656.2U CN201720867656U CN206973094U CN 206973094 U CN206973094 U CN 206973094U CN 201720867656 U CN201720867656 U CN 201720867656U CN 206973094 U CN206973094 U CN 206973094U
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Abstract
It the utility model is related to a kind of steel pipe two-part and exempt from the dead mouth of interior corrosion-resistanting interpolating port and connect head assembly.The dead mouth of pipeline (7) between two steel pipes (1) installs two company's head short tubes (2), the company's of being welded with head weld seam (3) between the steel pipe (1) and even head short tube (2), it is fixedly connected between two company's head short tubes (2) by dead mouth weld seam (4), the inwall of the even head short tube (2) is provided with interior overlay cladding (5), and inner anticorrosioning coating (6) is provided with steel pipe (1) inwall.Beneficial effect is：The utility model solves the dead mouth weld bond internal corrosion prevention technology bottleneck of steel pipe, realizes batch production, visualization, the standardization of the dead mouth weld bond internal joint patch of pipe end；Extend pipeline life cycle；Reduce environmental protection, security risk caused by tube bends weld bond corrosion leakage.
Description
Technical field
A kind of steel pipe field is the utility model is related to, more particularly to a kind of steel pipe two-part exempts from interior corrosion-resistanting interpolating port
Dead mouth connects head assembly.
Background technology
To avoid corrosion of the pumped (conveying) medium to steel pipe, it is necessary to carry out batch production preservative treatment to steel pipe inner wall, due to
Pipeline welding heat input can cause the destruction of weld bond region inner anticorrosioning coating, be needed after Site Welding construction by artificial or equipment
Butt welding mouth inwall carries out preservative treatment inside into pipeline, and this process is corrosion-resistanting interpolating port in weld bond；Equipment or people can not be passed through
The pipe welding port of corrosion-resistanting interpolating port operation is " the dead mouth of pipeline " in work progress；
By pipe fittings such as elbow, threeway or short tubes, or by the process that two segment pipes are welded together " dead mouth connects
Head "；Due to unsuitable equipment can enter pipeline dead oral area position weld seam is carried out in corrosion-resistanting interpolating port operation, in dead mouth weld bond
Wall turns into interior corrosion-resistant blind area；
Pass through the prefabrication such as surfacing in the built-up welding of pipe end stainless steel, stainless steel short tube pipe end liner or nickel base powder
Technique, anti-corrosion includes the method for process in release after pipeline welding, cries pipeline pre- jointing method.
Patent of invention 201510042589.6 discloses one kind《Jointing method is exempted from long distance pipeline closing connection built-up welding》, the party
Method is more than three sections of pipe nipples of dead mouth length in reserve by prefabricated overall length, wherein being placed in the dead mouth pipe nipple both ends inner wall overlaying of centre not
Rust steel layer, then does interior preservative treatment again；Company's head pipe nipple one end inner wall overlaying stainless steel layer of both ends pipeline is connected, processing connects head
The non-built-up welding one end of pipe nipple, make the total length of three sections of pipe nipples identical (allowance weld gap) with reserving dead mouth length, it is then right respectively
Even the non-heap welding end of head pipe nipple and two segment pipes are welded to connect and corrosion-resistanting interpolating port is handled in being carried out to weld seam, finally by dead mouth pipe nipple with
Even head pipe nipple heap welding end is welded together, and stainless steel layer and the inner anticorrosioning coating of the advance built-up welding of weld bond inwall are formed continuously
Interior anticorrosive coat, realize the purpose for exempting from internal joint patch.
Foregoing invention uses three sections of prefabricated pipe nipples, and joint connection in site has 4 weld seams, wherein twice stainless steel weld joint, not only
Construction efficiency is reduced, the company's of also add head construction cost.
The content of the invention
The purpose of this utility model is aiming at drawbacks described above existing for prior art, there is provided a kind of steel pipe two-part
Exempt from the dead mouth of interior corrosion-resistanting interpolating port and connect head assembly, the continuous of the interior anticorrosive coat including dead mouth weld bond can ensured, damned mouth connects
Head assembly is prefabricated using batch production, can reduce pipeline field construction cost, extends pipeline life cycle, reduces because weld bond corrodes
Safe and environment-friendly risk caused by leakage.
A kind of steel pipe two-part that the utility model is mentioned exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly, including steel tube
Road (1), even head short tube (2), even head weld seam (3), dead mouth weld seam (4), interior overlay cladding (5), inner anticorrosioning coating (6), the dead mouth of pipeline
(7), the dead mouth of pipeline (7) between two steel pipes (1) installs two company's head short tubes (2), the even steel pipe (1) and head
The company's of being welded with head weld seam (3) between short tube (2), it is fixedly connected by dead mouth weld seam (4) between two company's head short tubes (2), the company
The inwall of head short tube (2) is provided with interior overlay cladding (5), and inner anticorrosioning coating (6) is provided with steel pipe (1) inwall.
Above-mentioned company's head short tube (2) includes base tube (2.1), built-up welding transition region (2.2), the pre- repaired mouth layer (2.3) of corrosion resistant alloy
With groove (2.4), the inwall of the base tube (2.1) is provided with the pre- repaired mouth layer (2.3) of corrosion resistant alloy, in the pre- repaired mouth layer of corrosion resistant alloy
(2.3) one end is provided with built-up welding transition region (2.2), and the other end is provided with groove (2.4).
The both ends of above-mentioned company's head short tube (2) are provided with overlay cladding, and the thickness of overlay cladding is more than 1.6mm, and overlay cladding width is big
In 80mm.
Dead mouth weld seam (4) between two company's head short tubes (2) uses the dead mouth weld seam of corrosion resistant alloy.
The beneficial effects of the utility model are：The utility model by the advance built-up welding stainless steel layer of short tube pipe end inwall,
Avoid the destruction of pipeline welding heat input butt welding mouth region inner anticorrosioning coating；Play the work of the extremely intraoral anticorrosive coat of connecting pipe
With；The utility model solves the dead mouth weld bond internal corrosion prevention technology bottleneck of steel pipe, realizes the dead mouth weld bond internal joint patch of pipe end
Batch production, visualization, standardization；Extend pipeline life cycle；Reduce caused by tube bends weld bond corrosion leakage environmental protection,
Security risk.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model；
Accompanying drawing 2 is the structural representation of even head short tube；
In upper figure：Steel pipe 1, even head short tube 2, even head weld seam 3, dead mouth weld seam 4, interior overlay cladding 5, inner anticorrosioning coating 6,
The dead mouth 7 of pipeline, the pre- repaired mouth layer 2.3 of base tube 2.1, built-up welding transition region 2.2, corrosion resistant alloy and groove 2.4.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
A kind of steel pipe two-part that the utility model is mentioned exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly, the utility model
A kind of steel pipe two-part mentioned exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly, including steel pipe 1, even company's head short tube 2, head
Weld seam 3, dead mouth weld seam 4, interior overlay cladding 5, inner anticorrosioning coating 6, the dead mouth 7 of pipeline, the dead mouth 7 of pipeline between two steel pipes 1
Two company's head short tubes 2 are installed, the company's of being welded with head weld seam 3 between the steel pipe 1 and even head short tube 2, between two company's head short tubes 2
It is fixedly connected by dead mouth weld seam 4, the inwall of the even head short tube 2 is provided with interior overlay cladding 5, is provided with the inwall of steel pipe 1 interior
Corrosion-inhibiting coating 6.
Above-mentioned company's head short tube 2 includes base tube 2.1, built-up welding transition region 2.2, the pre- repaired mouth layer 2.3 of corrosion resistant alloy and groove
2.4, the inwall of the base tube 2.1 is provided with the pre- repaired mouth layer 2.3 of corrosion resistant alloy, is provided with one end of the pre- repaired mouth layer 2.3 of corrosion resistant alloy
Built-up welding transition region 2.2, the other end are provided with groove 2.4.
The both ends of above-mentioned company's head short tube 2 are provided with overlay cladding, and the thickness of overlay cladding is more than 1.6mm, and overlay cladding width is more than
80mm。
Dead mouth weld seam 4 between two company's head short tubes 2 uses the dead mouth weld seam of corrosion resistant alloy.
The utility model at the scene pipeline welding when, first repair pipeline reserve the dead non-built-up welding pipe end of mouth pipe end or short tube,
The total length of two sections of short tubes is set to be equal to the total length (reserved welded gaps) for reserving dead mouth, then by the non-heap welding end of 2 sections of short tubes
Straight length finally will respectively together with the pipeline welding at dead mouth both ends, then the weld bond inwall to being soldered carries out internal joint patch processing
The short tube corrosion resistant alloy wlding for being connected to pipe ends welds together, that is, completes the dead mouth of pipeline and connect head process, in pipeline
Corrosion-inhibiting coating is realized the continuous of interior anticorrosive coat, solved dead by the corrosion-resistant alloy layer and corrosion resistant alloy weld bond of advance built-up welding
Intraoral repaired mouth problem is such as shown in (Fig. 1).
Operation principle of the present utility model is：
Prevented by the advance built-up welding stainless steel layer of short tube pipe end inwall, avoiding in pipeline welding heat input butt welding mouth region
The destruction of rotten coating；Play a part of the extremely intraoral anticorrosive coat of connecting pipe,
Advantage of the present utility model is：
Solve the dead mouth weld bond internal corrosion prevention technology bottleneck of steel pipe, realize the factory of the dead mouth weld bond internal joint patch of pipe end
Change, visualize, standardization；Extend pipeline life cycle；Reduce environmental protection caused by tube bends weld bond corrosion leakage, safety
Risk.
It is described above, only it is part preferred embodiment of the present utility model, any those skilled in the art
Equivalent technical scheme can be changed or be revised as using the technical scheme of above-mentioned elaboration.Therefore, it is new according to this practicality
Any simple modification or substitute equivalents that the technical scheme of type is carried out, belong to the scope of the requires of the utility model protection to the greatest extent.
Claims (4)
1. a kind of steel pipe two-part, which exempts from the dead mouth of interior corrosion-resistanting interpolating port, connects head assembly, it is characterized in that：Including steel pipe (1), even
Head short tube (2), even head weld seam (3), dead mouth weld seam (4), interior overlay cladding (5), inner anticorrosioning coating (6), the dead mouth of pipeline (7), two
The dead mouth of pipeline (7) between steel pipe (1) installs two company's head short tubes (2), the even steel pipe (1) and head short tube (2)
Between the company's of being welded with head weld seam (3), be fixedly connected by dead mouth weld seam (4) between two company's head short tubes (2), the even head short tube
(2) inwall is provided with interior overlay cladding (5), and inner anticorrosioning coating (6) is provided with steel pipe (1) inwall.
2. steel pipe two-part according to claim 1, which exempts from the dead mouth of interior corrosion-resistanting interpolating port, connects head assembly, it is characterized in that：It is described
Company's head short tube (2) include base tube (2.1), built-up welding transition region (2.2), the pre- repaired mouth layer (2.3) of corrosion resistant alloy and groove (2.4),
The inwall of the base tube (2.1) is provided with the pre- repaired mouth layer (2.3) of corrosion resistant alloy, is set in one end of the pre- repaired mouth layer (2.3) of corrosion resistant alloy
There is built-up welding transition region (2.2), the other end is provided with groove (2.4).
3. steel pipe two-part according to claim 1, which exempts from the dead mouth of interior corrosion-resistanting interpolating port, connects head assembly, it is characterized in that：It is described
The both ends of company's head short tube (2) be provided with overlay cladding, the thickness of overlay cladding is more than 1.6mm, and overlay cladding width is more than 80mm.
4. steel pipe two-part according to claim 1, which exempts from the dead mouth of interior corrosion-resistanting interpolating port, connects head assembly, it is characterized in that：Two
Even the dead mouth weld seam (4) between head short tube (2) uses the dead mouth weld seam of corrosion resistant alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867656.2U CN206973094U (en) | 2017-07-18 | 2017-07-18 | A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867656.2U CN206973094U (en) | 2017-07-18 | 2017-07-18 | A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973094U true CN206973094U (en) | 2018-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720867656.2U Active CN206973094U (en) | 2017-07-18 | 2017-07-18 | A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly |
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| CN (1) | CN206973094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612927A (en) * | 2018-07-06 | 2018-10-02 | 上海图博可特石油管道涂层有限公司 | A kind of gathering line stainless steel connection structure |
| CN113785151A (en) * | 2019-04-29 | 2021-12-10 | Sms集团有限公司 | Metal pipe, in particular a pipe for transporting oil and gas, having a metal coating in the transition region |
-
2017
- 2017-07-18 CN CN201720867656.2U patent/CN206973094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612927A (en) * | 2018-07-06 | 2018-10-02 | 上海图博可特石油管道涂层有限公司 | A kind of gathering line stainless steel connection structure |
| CN113785151A (en) * | 2019-04-29 | 2021-12-10 | Sms集团有限公司 | Metal pipe, in particular a pipe for transporting oil and gas, having a metal coating in the transition region |
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