CN203023678U - Composite pipe with anti-corrosion joint - Google Patents

Composite pipe with anti-corrosion joint Download PDF

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Publication number
CN203023678U
CN203023678U CN 201320052153 CN201320052153U CN203023678U CN 203023678 U CN203023678 U CN 203023678U CN 201320052153 CN201320052153 CN 201320052153 CN 201320052153 U CN201320052153 U CN 201320052153U CN 203023678 U CN203023678 U CN 203023678U
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pipe
corrosion
resisting alloy
corrosion resisting
alloy pipe
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CN 201320052153
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Chinese (zh)
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王献昉
金华
黄在好
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王献昉
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Abstract

The utility model relates to the technical field of steel pipelines, and discloses a composite pipe with an anti-corrosion joint. The composite pipe comprises a conveying steel pipe, a left corrosion-resistant alloy pipe and a right corrosion-resistant alloy pipe, wherein a left annular mounting groove is formed in the inner wall of the left end of the conveying steel pipe; a left corrosion-resistant alloy pipe is fixedly arranged in the left annular mounting groove; the right end of the left corrosion-resistant alloy pipe is in a frustum shape of which the left part is narrow and the right part is wide; the inner wall of the conveying steel pipe is flush with the widest end of the right end of the left corrosion-resistant alloy pipe; a right annular mounting groove is formed in the inner wall of the right end of the conveying steel pipe; and a right corrosion-resistant alloy pipe is fixedly arranged in the right annular mounting groove. The composite pipe has a reasonable and compact structure, and is convenient to use; and the conveying steel pipe, the left corrosion-resistant alloy pipe and the right corrosion-resistant alloy pipe are used in a matching mode, so that the problem that the inner wall is corroded and perforated because an anti-corrosion coating layer at a welding port is damaged after the conveying pipe is welded is solved; and moreover, the composite pipe has the characteristics of good anti-corrosion effect, security and reliability, the working efficiency is improved, and the potential safety hazard is avoided.

Description

Interface corrosion protection composite pipe
Technical field
The utility model relates to the steel pipe technical field, is a kind of interface corrosion protection composite pipe.
Background technique
Inner wall of steel pipe is welded to connect between steel pipe in process when adopting corrosion-inhibiting coating anticorrosion, and the temperatures involved of the corrosion-inhibiting coating in heat-affected zone, weld seam both sides owing to being subject to welding heat destroyed, thereby loses antiseptic property.The inner-walls of duct anticorrosive coating repaired mouth is a technical barrier being difficult to both at home and abroad go beyond (steel pipe inner wall anti-corrosive layer technology always not can large scale application, the requirement because on-the-spot repaired mouth is difficult to ensure the quality of products exactly) always for a long time.Preventing corrosion of repaired mouth layer non-conformity of quality closes that requirement causes easily that pipeline inner-walls of duct when carrying aggressive medium is perishable, corrosive pipeline perforation leakage event is to environment etc.
Summary of the invention
The utility model provides a kind of interface corrosion protection composite pipe, has overcome the deficiency of above-mentioned prior art, and it can effectively solve anticorrosion coating antiseptic difficult quality guarantee after conveying steel pipe weld bond welding and cause the problem of perforation and befouling environment.
The technical solution of the utility model realizes by following measures: a kind of interface corrosion protection composite pipe comprises conveying steel pipe, left corrosion resisting alloy pipe and right corrosion resisting alloy pipe; On the left end inwall of conveying steel pipe, left annular mounting groove is arranged, be installed with left corrosion resisting alloy pipe in left annular mounting groove, the right part of left corrosion resisting alloy pipe is the wide cone table shape in the left narrow right side, and the inwall of conveying steel pipe is mutually concordant with the right-hand member of left corrosion resisting alloy pipe; On the right-hand member inwall of conveying steel pipe, right annular mounting groove is arranged, be installed with right corrosion resisting alloy pipe in right annular mounting groove, the left part of right corrosion resisting alloy pipe is the narrow cone table shape in the left wide right side, and the inwall of conveying steel pipe is mutually concordant with the left end of right corrosion resisting alloy pipe.
The below is the further optimization and/or improvements to above-mentioned model utility technological scheme:
Fixedly be coated with respectively mutually concordant corrosion-inhibiting coating on the inwall of the conveying steel pipe between the left end of above-mentioned right-hand member at left corrosion resisting alloy pipe, right corrosion resisting alloy pipe, left corrosion resisting alloy pipe and right corrosion resisting alloy pipe.
Above-mentioned left corrosion resisting alloy pipe is stainless steel short tube or nickel-base alloy short tube; Right corrosion resisting alloy pipe is stainless steel short tube or nickel-base alloy short tube.
The left end of above-mentioned left corrosion resisting alloy pipe and right-hand member are fixed by welding in respectively on conveying steel pipe; Left end and the right-hand member of right corrosion resisting alloy pipe are fixed by welding on conveying steel pipe respectively.
The length of above-mentioned left corrosion resisting alloy pipe is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe is 100 millimeters to 200 millimeters.
The utility model reasonable and compact in structure, easy to use, by being used in conjunction with of conveying steel pipe, left corrosion resisting alloy pipe and right corrosion resisting alloy pipe, solve after the conveying steel pipe welding weld bond place corrosion-inhibiting coating and destroyed the problem that causes the inner-walls of duct corrosion failure, have favorable anti-corrosion effect and safe and reliable characteristics, improve working efficiency, stopped potential safety hazard.
Description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment.
Coding in accompanying drawing is respectively: 1 is conveying steel pipe, and 2 is left corrosion resisting alloy pipe, and 3 is right corrosion resisting alloy pipe, and 4 is corrosion-inhibiting coating.
Embodiment
The utility model is not subjected to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 1 is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing, the utility model is further described:
As shown in Figure 1, this interface corrosion protection composite pipe comprises conveying steel pipe 1, left corrosion resisting alloy pipe 2 and right corrosion resisting alloy pipe 3; On the left end inwall of conveying steel pipe 1, left annular mounting groove is arranged, be installed with left corrosion resisting alloy pipe 2 in left annular mounting groove, the right part of left corrosion resisting alloy pipe 2 is the wide cone table shape in the left narrow right side, and the inwall of conveying steel pipe 1 is mutually concordant with the right-hand member of left corrosion resisting alloy pipe 2; On the right-hand member inwall of conveying steel pipe 1, right annular mounting groove is arranged, be installed with right corrosion resisting alloy pipe 3 in right annular mounting groove, the left part of right corrosion resisting alloy pipe 3 is the narrow cone table shape in the left wide right side, and the inwall of conveying steel pipe 1 is mutually concordant with the left end of right corrosion resisting alloy pipe 3.The external diameter of left corrosion resisting alloy pipe 2 is bigger than the internal diameter of conveying steel pipe 1, is convenient to so left corrosion resisting alloy pipe 2 and combines closely with conveying steel pipe 1; The external diameter of right corrosion resisting alloy pipe 3 is bigger than the internal diameter of conveying steel pipe 1, is convenient to so right corrosion resisting alloy pipe 3 and combines closely with conveying steel pipe 1.Only need during use respectively that steel pipe layer with two conveying steel pipes 1 is fixed and welded together, left corrosion-resistant short tube 2 and right corrosion-resistant short tube 3 be fixed and welded together, can thoroughly solve the difficult problem of inner-walls of duct weld bond both sides employing organic anti-corrosive coating antiseptic difficult quality guarantee, the corrosion of inner-walls of duct in the time of can effectively controlling pipeline conveying aggressive medium, effectively guaranteed pipe safety normally operation stably, thereby can avoid having a extensive future because of corrosive pipeline perforation leakage event pollution on the environment.
Can according to actual needs, above-mentioned interface corrosion protection composite pipe be made further optimization and/or improvements:
As shown in Figure 1, fixedly be coated with respectively mutually concordant corrosion-inhibiting coating 4 on the inwall of the conveying steel pipe 1 between the left end of the right-hand member of left corrosion resisting alloy pipe 2, right corrosion resisting alloy pipe 3, left corrosion resisting alloy pipe 2 and right corrosion resisting alloy pipe 3.Like this, corrosion-inhibiting coating 4, left corrosion resisting alloy pipe 2 and right corrosion resisting alloy pipe 3 can play corrosion-resisting function.
As shown in Figure 1, left corrosion resisting alloy pipe 2 is stainless steel short tube or nickel-base alloy short tube; Right corrosion resisting alloy pipe 3 is stainless steel short tube or nickel-base alloy short tube.Like this, left corrosion resisting alloy pipe 2 and right corrosion resisting alloy pipe 3 can better play corrosion-resisting function.
As required, the left end of left corrosion resisting alloy pipe 2 and right-hand member are fixed by welding in respectively on conveying steel pipe 1; The left end of right corrosion resisting alloy pipe 3 and right-hand member are fixed by welding in respectively on conveying steel pipe 1.
As required, the length of left corrosion resisting alloy pipe 2 is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe 3 is 100 millimeters to 200 millimeters.
Above technical characteristics has consisted of most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs non-essential technical characteristics, satisfies the demand of different situations.

Claims (9)

1. an interface corrosion protection composite pipe, is characterized in that comprising conveying steel pipe, left corrosion resisting alloy pipe and right corrosion resisting alloy pipe; On the left end inwall of conveying steel pipe, left annular mounting groove is arranged, be installed with left corrosion resisting alloy pipe in left annular mounting groove, the right part of left corrosion resisting alloy pipe is the wide cone table shape in the left narrow right side, and the inwall of conveying steel pipe is mutually concordant with the right-hand member of left corrosion resisting alloy pipe; On the right-hand member inwall of conveying steel pipe, right annular mounting groove is arranged, be installed with right corrosion resisting alloy pipe in right annular mounting groove, the left part of right corrosion resisting alloy pipe is the narrow cone table shape in the left wide right side, and the inwall of conveying steel pipe is mutually concordant with the left end of right corrosion resisting alloy pipe.
2. interface corrosion protection composite pipe according to claim 1 is characterized in that fixedly being coated with respectively mutually concordant corrosion-inhibiting coating on the inwall of the conveying steel pipe between the left end of the right-hand member of left corrosion resisting alloy pipe, right corrosion resisting alloy pipe, left corrosion resisting alloy pipe and right corrosion resisting alloy pipe.
3. interface corrosion protection composite pipe according to claim 1 and 2, is characterized in that left corrosion resisting alloy pipe is stainless steel short tube or nickel-base alloy short tube; Right corrosion resisting alloy pipe is stainless steel short tube or nickel-base alloy short tube.
4. interface corrosion protection composite pipe according to claim 1 and 2, is characterized in that the left end of left corrosion resisting alloy pipe and right-hand member are fixed by welding in respectively on conveying steel pipe; Left end and the right-hand member of right corrosion resisting alloy pipe are fixed by welding on conveying steel pipe respectively.
5. interface corrosion protection composite pipe according to claim 3, is characterized in that the left end of left corrosion resisting alloy pipe and right-hand member are fixed by welding in respectively on conveying steel pipe; Left end and the right-hand member of right corrosion resisting alloy pipe are fixed by welding on conveying steel pipe respectively.
6. interface corrosion protection composite pipe according to claim 1 and 2, the length that it is characterized in that left corrosion resisting alloy pipe is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe is 100 millimeters to 200 millimeters.
7. interface corrosion protection composite pipe according to claim 3, the length that it is characterized in that left corrosion resisting alloy pipe is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe is 100 millimeters to 200 millimeters.
8. interface corrosion protection composite pipe according to claim 4, the length that it is characterized in that left corrosion resisting alloy pipe is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe is 100 millimeters to 200 millimeters.
9. interface corrosion protection composite pipe according to claim 5, the length that it is characterized in that left corrosion resisting alloy pipe is 100 millimeters to 200 millimeters; The length of right corrosion resisting alloy pipe is 100 millimeters to 200 millimeters.
CN 201320052153 2013-01-30 2013-01-30 Composite pipe with anti-corrosion joint Active CN203023678U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320052153 CN203023678U (en) 2013-01-30 2013-01-30 Composite pipe with anti-corrosion joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320052153 CN203023678U (en) 2013-01-30 2013-01-30 Composite pipe with anti-corrosion joint

Publications (1)

Publication Number Publication Date
CN203023678U true CN203023678U (en) 2013-06-26

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Application Number Title Priority Date Filing Date
CN 201320052153 Active CN203023678U (en) 2013-01-30 2013-01-30 Composite pipe with anti-corrosion joint

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CN (1) CN203023678U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104075047A (en) * 2014-06-19 2014-10-01 中国海洋石油总公司 Tungsten alloy plated pipeline welding port connecting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104075047A (en) * 2014-06-19 2014-10-01 中国海洋石油总公司 Tungsten alloy plated pipeline welding port connecting method

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