CN207261896U - A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe - Google Patents

A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe Download PDF

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Publication number
CN207261896U
CN207261896U CN201720867623.8U CN201720867623U CN207261896U CN 207261896 U CN207261896 U CN 207261896U CN 201720867623 U CN201720867623 U CN 201720867623U CN 207261896 U CN207261896 U CN 207261896U
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China
Prior art keywords
bend pipe
corrosion
steel
weld bond
pipe
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CN201720867623.8U
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Inventor
穆学杰
田黎明
韩文礼
梅奇
李广华
魏国
庄衍武
刘志刚
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Beijing Yangqi Engineering Technology Co Ltd
Shandong Shengli Long Pipeline Technology Co Ltd
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Beijing Yangqi Engineering Technology Co Ltd
Shandong Shengli Long Pipeline Technology Co Ltd
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Abstract

It the utility model is related to a kind of steel and exempt from interior corrosion-resistanting interpolating port bend pipe.Its technical solution is:Including one section of bend pipe (a) and four sections of short tubes (b), it is connected between the bend pipe (a) and short tube (b) by stainless steel weld bond (1), the inner side of stainless steel weld bond (1) is equipped with the first stainless steel weld overlays (4);The outer end of the short tube (b) connects another short tube (b) by even head weld bond (2), and even the inner side of head weld bond (2) is equipped with interior corrosion-resistanting interpolating port layer (3).Beneficial effect is:The utility model solves steel pipe bend pipe weld bond internal corrosion prevention technology bottleneck, realizes anti-corrosion batch production in bend pipe weld bond;Improve pipeline construction efficiency;Pipeline corrosion protection and construction cost are reduced, extends pipeline life cycle;Reduce environmental protection, security risk caused by tube bends weld bond corrosion leakage.

Description

A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe
Technical field
Pipeline field is the utility model is related to, more particularly to a kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe, solves steel tube Corrosion-resistanting interpolating port problem in road bend pipe weld bond.
Background technology
Butt welding mouth inner wall carries out preservative treatment in pipeline welds anticorrosive construction, it is necessary to after the completion of the welding of every segment pipe, This process is called " internal joint patch ";Current all technologies all can not carry out corrosion-resistanting interpolating port operation, institute to tube bends weld bond inner wall With the interior corrosion-resistanting interpolating port of bend pipe weld bond is always the technical bottleneck of plumbing installations, have impact on steel pipe bulk life time, particularly The economic benefit of bend pipe largely existing oil field gathering and transportation station, petrochemical industry refinery etc. is have impact on, causes serious safety and environmental protection risk.
The content of the invention
The purpose of this utility model is aiming at drawbacks described above existing in the prior art, there is provided a kind of steel is exempted from interior anti-corrosion and mended Mouthful bend pipe, the utility model can ensure the interior erosion resistant coating including bend pipe it is continuous while, realize in bend pipe weld bond The batch production and standardization of corrosion-resistanting interpolating port operation, reduce pipeline construction cost, extend pipeline life cycle, reduce because of bend pipe weld bond Safe and environment-friendly risk caused by corrosion leakage.
A kind of steel that the utility model is mentioned exempts from interior corrosion-resistanting interpolating port bend pipe, its technical solution is:Including one section of bend pipe (a) With four sections of short tubes (b), it is connected between the bend pipe (a) and short tube (b) by stainless steel weld bond (1), stainless steel weld bond (1) Inner side is equipped with the first stainless steel weld overlays (4);The outer end of the short tube (b) connects another short tube by even head weld bond (2) (b), and even the inner side of head weld bond (2) is equipped with interior corrosion-resistanting interpolating port layer (3).
Above-mentioned short tube (b) includes base tube (b1), built-up welding transition region (b2), the pre- repaired mouth layer (b3) of corrosion resistant alloy and groove (b4), the inner wall of the base tube (b1) is equipped with the pre- repaired mouth layer (b3) of corrosion resistant alloy, the pre- repaired mouth layer (b3) of corrosion resistant alloy and base tube (b1) junction is equipped with built-up welding transition region (b2), and the outer end of base tube is equipped with groove (b4).
Above-mentioned bend pipe (a) include steel pipe (a1), the second stainless steel weld overlays (a2), inner anticorrosioning coating (a3) and it is outer prevent Rotten coating (a4), the middle part elbow inner wall of the steel pipe (a1) are equipped with inner anticorrosioning coating (a3), and outer wall is equipped with outer anticorrosive coating (a4), the second stainless steel weld overlays (a2) are equipped with the both ends inner wall of steel pipe (a1).
The radius of above-mentioned bend pipe is equal to 2D.
The length of above-mentioned short tube (b) is greater than or equal to 1.5D.
The thickness of the pre- repaired mouth layer (b3) of above-mentioned corrosion resistant alloy is more than 1.5mm, width is more than 80mm.
The beneficial effects of the utility model are:
1st, the utility model is made by the advance built-up welding stainless steel layer of short tube pipe end inner wall, playing pre- repaired mouth in pipe welding port With stainless steel layer width avoids Pipeline butt from connecing heat premised on pipeline thermal weld stress does not damage antirust coating in pipeline The destruction of butt welding mouth inner wall area corrosion-inhibiting coating is inputted, realizes the continuous of pipeline internal corrosion layer;
2nd, the short tube through over mechanical processing, advance built-up welding stainless steel is solder-connected to NORMAL BEND both ends, then right again Bend pipe carries out inside and outside wall preservative treatment, solves corrosion-resistanting interpolating port technical bottleneck in bend pipe weld bond;
3rd, straight tube is welded to connect using the short tube manufactured with above-mentioned technique same procedure, reaches and solve anti-corrosion in bend pipe weld bond The purpose of technical bottleneck;
The utility model solves steel pipe bend pipe weld bond internal corrosion prevention technology bottleneck, realizes anti-corrosion work in bend pipe weld bond Factory, visualization, standardization;Improve pipeline construction efficiency;Pipeline corrosion protection and construction cost are reduced, extends pipeline life Cycle;Reduce environmental protection, security risk caused by tube bends weld bond corrosion leakage.
Brief description of the drawings
Attached drawing 1 is the structure diagram of the bend pipe of the utility model;
Attached drawing 2 is the structure diagram of the short tube of the utility model;
Attached drawing 3 is the overall structure diagram of the utility model;
In upper figure:Bend pipe a, short tube b, steel pipe a1, the second stainless steel weld overlays a2, inner anticorrosioning coating a3 and outer anti-corrosion apply Layer a4, base tube b1, built-up welding transition region b2, corrosion resistant alloy pre- repaired mouth layer b3 and groove b4, stainless steel weld bond 1, connect head weld bond 2, be interior Corrosion-resistanting interpolating port layer 3, the first stainless steel weld overlays 4.
Embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it will be appreciated that described herein excellent Select embodiment to be only used for describing and explaining the present invention, be not used to limit the utility model.
Referring to the drawings 3, the utility model includes one section of bend pipe a and four sections of short tube b, passes through between the bend pipe a and short tube b Stainless steel weld bond 1 connects, and the inner side of stainless steel weld bond 1 is equipped with the first stainless steel weld overlays 4;The outer end of the short tube b passes through Even head weld bond 2 connects another short tube b, and even the inner side of head weld bond 2 is equipped with interior corrosion-resistanting interpolating port layer 3.
Referring to the drawings 2, the short tube b of the utility model includes base tube b1, built-up welding transition region b2, the pre- repaired mouth layer b3 of corrosion resistant alloy With groove b4, the inner wall of the base tube b1 is equipped with the pre- repaired mouth layer b3 of corrosion resistant alloy, the pre- repaired mouth layer b3 of corrosion resistant alloy and base tube b1 Junction is equipped with built-up welding transition region b2, and the outer end of base tube is equipped with groove b4.
Referring to the drawings 1, the bend pipe a of the utility model includes steel pipe a1, the second stainless steel weld overlays a2, inner anticorrosioning coating a3 With outer anticorrosive coating a4, the middle part elbow inner wall of the steel pipe a1 is equipped with inner anticorrosioning coating a3, and outer wall is equipped with outer anticorrosive coating A4, the second stainless steel weld overlays a2 is equipped with the both ends inner wall of steel pipe a1.
Wherein, the radius of bend pipe is equal to 2D (multiple of length diameter of steel tube).
The utility model includes following production method:
(1) pipe end inner wall overlaying have stainless steel, inside and outside wall scribbles a kind of steel of corrosion-inhibiting coating and exempts from interior corrosion-resistanting interpolating port Bend pipe;Bend pipe specification is shown in Table 1, and bend pipe structure and size are such as shown in (Fig. 1);
1 bend pipe specification of table
(2) it is used to 2 segment length be welded to connect with NORMAL BEND, that one end inner wall overlaying has stainless steel layer be approximately equal to The short tube of 1.5D (multiple of diameter of steel tube);
(3) it is used to live 2 segment length that straight pipe is connected with bend pipe, that one end inner wall overlaying has stainless steel layer be approximately equal to Company's head short tube of 2D (multiple of diameter of steel tube) is such as shown in (Fig. 2), and even head short tube specification is shown in Table 2;
(4) thickness of overlay cladding is more than 1.5mm, width is more than 80mm;
Its specific implementation step is as follows:
(1) using TIG automatic welders, to 4 sections of short tubes, inner wall carries out stainless steel built-up welding, the thickness of overlay cladding at one end in advance It is not less than 80mm not less than 1.6mm, width;
(2) advised after the completion of built-up welding by design requirement mechanical processing short tube groove and overlay cladding, 1.5D stub lengths by table 1 Fixed length conversion obtains;2D connects regulation of the head stub length by table 2;
Table 2 connects head short tube specification
(3) the non-heap welding end of 2 sections of short tubes of the 1.5D machined is respectively welded to be connected to using automatic welding and meets country Bend pipe both ends as defined in standard;
(4) anti-corrosion coating processing is carried out to the inside and outside wall of bend pipe respectively, finished product is such as shown in (Fig. 1);
(5) during live bend pipe connection, two sections of non-heap welding ends of company's head short tube are welded to straight tube end, manual butt welding mouth Inner wall carries out anti-corrosion coating, is then welded to connect bend pipe such as (figure with stainless steel wlding with the straight tube end of short tube has been respectively welded 3) shown in, so far, bend pipe connection is completed;The stainless steel layer of advance built-up welding forms continuous erosion resistant coating with antirust coating in pipeline;
The above, is only the part preferred embodiment of the utility model, any those skilled in the art Equivalent technical solution can be changed or be revised as using the technical solution of above-mentioned elaboration.Therefore, it is new according to this practicality Any simple modification or substitute equivalents that the technical solution of type is carried out, belong to the greatest extent the scope of the requires of the utility model protection.

Claims (6)

1. a kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:Including one section of bend pipe (a) and four sections of short tubes (b), described is curved It is connected between pipe (a) and short tube (b) by stainless steel weld bond (1), the inner side of stainless steel weld bond (1) is equipped with the first stainless steel built-up welding Layer (4);The outer end of the short tube (b) connects another short tube (b), and the even inner side of head weld bond (2) by even head weld bond (2) Equipped with interior corrosion-resistanting interpolating port layer (3).
2. steel according to claim 1 exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:The short tube (b) includes base tube (b1), the pre- repaired mouth layer (b3) of built-up welding transition region (b2), corrosion resistant alloy and groove (b4), the inner wall of the base tube (b1) is equipped with anti-corrosion The pre- repaired mouth layer (b3) of alloy, the pre- repaired mouth layer (b3) of corrosion resistant alloy and the junction of base tube (b1) are equipped with built-up welding transition region (b2), base The outer end of pipe is equipped with groove (b4).
3. steel according to claim 1 exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:The bend pipe (a) includes steel pipe (a1), the second stainless steel weld overlays (a2), inner anticorrosioning coating (a3) and outer anticorrosive coating (a4), the middle part of the steel pipe (a1) are curved Head place inner wall is equipped with inner anticorrosioning coating (a3), and outer wall is equipped with outer anticorrosive coating (a4), steel pipe (a1) both ends inner wall equipped with the Two stainless steel weld overlays (a2).
4. steel according to claim 1 exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:The radius of the bend pipe is equal to 2D。
5. steel according to claim 1 exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:The length of the short tube (b) is big In or equal to 1.5D.
6. steel according to claim 2 exempts from interior corrosion-resistanting interpolating port bend pipe, it is characterized in that:The pre- repaired mouth layer of the corrosion resistant alloy (b3) thickness is more than 1.5mm, width is more than 80mm.
CN201720867623.8U 2017-07-18 2017-07-18 A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe Active CN207261896U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720867623.8U CN207261896U (en) 2017-07-18 2017-07-18 A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720867623.8U CN207261896U (en) 2017-07-18 2017-07-18 A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe

Publications (1)

Publication Number Publication Date
CN207261896U true CN207261896U (en) 2018-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720867623.8U Active CN207261896U (en) 2017-07-18 2017-07-18 A kind of steel exempts from interior corrosion-resistanting interpolating port bend pipe

Country Status (1)

Country Link
CN (1) CN207261896U (en)

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