CN201137793Y - Steel pipe welding interface anti-corrosive protection joint - Google Patents

Steel pipe welding interface anti-corrosive protection joint Download PDF

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Publication number
CN201137793Y
CN201137793Y CN 200720032842 CN200720032842U CN201137793Y CN 201137793 Y CN201137793 Y CN 201137793Y CN 200720032842 CN200720032842 CN 200720032842 CN 200720032842 U CN200720032842 U CN 200720032842U CN 201137793 Y CN201137793 Y CN 201137793Y
Authority
CN
China
Prior art keywords
proof
corrosion
joint body
steel pipe
tubular configured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 200720032842
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Chinese (zh)
Inventor
赵勇
刘立
白文光
薛斌
王成达
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Petroleum Exploration Bureau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changqing Petroleum Exploration Bureau filed Critical Changqing Petroleum Exploration Bureau
Priority to CN 200720032842 priority Critical patent/CN201137793Y/en
Application granted granted Critical
Publication of CN201137793Y publication Critical patent/CN201137793Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a steel pipe line welding interface corrosion-proof protecting technique and in particular relates to a steel pipe line welding interface corrosion-proof protecting connector which is suitable for the corrosion-proof protection for coating steel pipeline welding interfaces in the petroleum and petrifaction industries. The steel pipe line welding interface corrosion-proof protecting connector is characterized in that the connector comprises a pipe-shaped connector body (3), wherein a high temperature coating (4) is coated on the surface of the pipe-shaped connector body (3), high temperature packing rings (1) are respectively arranged on two ends of the pipe-shaped connector body (3), and flame proof heat-proof materials (2) are twisted in the middle of the pipe-shaped connector body (3). The steel pipe line welding interface corrosion-proof protecting connector enables the corrosion-proof performance of the welding interfaces to be reliable under the condition of simple operation and thereby the corrosion-proof quality of whole pipelines can not be affected.

Description

Steel pipeline welding junction anti-corrosion protection joint
Technical field
The utility model relates to steel pipeline welding junction anti-corrosion protection technology, a kind of steel pipeline welding junction anti-corrosion protection joint that is specially adapted to the anti-corrosion protection of petroleum and petrochemical sector undercoating steel pipeline welding junction of definitely saying so.
Background technique
In petroleum and petrochemical sector, the corrosion of steel gathering line is very serious.In order to alleviate and prevent the corrosion and damage of transfer line, improve its working life, the general employing applies coating or lining to steel pipeline inwall.Gathering line is higher to the requirement of strength of pipeline connection part, therefore, main adopt economical and reliably welding manner connect.The steel pipeline that adopts undercoating or lining is when welded and installed; the high temperature that welding is produced will destroy the coating or the lining of weld joint; make it lose the function of protection pipeline; and produce serious local etching herein and cause perforation; the anticorrosive coat protection of whole piece pipeline is fallen short of success for lack of final effort, and will cause enormous economic loss.
Existing solution to this problem mainly is to adopt the postwelding internal joint patch.General pipeline internal joint patch technology comprises mouth mending machine patch technology, memory alloy material internal joint patch technology, liner short tube patch technology and mechanical crimping internal joint patch technology etc.But existing welding junction internal joint patch technology exists the site operation difficulty big, thereby the quality of influence welding repaired mouth, often causes the frequent generation of pipeline corrosion perforation accident, has a strong impact on the ordinary production of enterprise.
Summary of the invention
Deficiency at existing pipeline welding junction aseptic technic; the utility model provides a kind of steel pipeline welding junction anti-corrosion protection joint; so that under situation simple to operate, make the antiseptic property of welding junction reliable, thereby do not influence the anticorrosive quality of whole piece pipeline.
The purpose of this utility model is to realize like this; steel pipeline welding junction anti-corrosion protection joint; it is characterized in that: it comprises tubular configured joint body 3; the surface of tubular configured joint body 3 scribbles high-temperature coating 4; high-temperature resistant seal ring 1 is installed at tubular configured joint body 3 two ends respectively, curls fire-resistant heat insulating material 2 at the middle part of tubular configured joint body 3.
Length 〉=the 300mm of described tubular configured joint body 3, caliber 〉=φ 60mm.
The quantity of the high-temperature resistant seal ring 1 at described tubular configured joint body 3 two ends is between 1-5, and the optimum number value is between 2-3.
Characteristics of the present utility model are:
A, employing high-temperature resistant coating butt joint body carry out the Bulk coat protection, make coating evenly not have pinprick.
B, away from the welding heat affected zone place twice high-temperature resistant seal ring is installed respectively, is reached and stop the purpose that medium enters gap between joint body and the conveying steel pipe inwall in the conveying steel pipe at the two ends of joint.
C, curl fire-resistant heat insulating material, guarantee that coating is not damaged after the delivery pipe welding at welding heat affected zone position, joint middle part.
D, adopt existing welding procedure that delivery pipe is welded at last.
The utility model compared with prior art, and is easy to manufacture, and site operation is simple, and cost is low, widely applicable, can be used for the various conveyance conduits that interior requirement for anticorrosion is arranged in oil field.
Favorable anti-corrosion effect, high temperature resistant, corrosion-resistant, guaranteed the anticorrosion grade at welding junction position and the conformity of the anticorrosion grade of body, guarantee the pipeline prolongation in working life.
The pipe protection phase reaches 10~15 years.
Description of drawings
Below in conjunction with embodiment's accompanying drawing the utility model is described further.
Fig. 1 is the utility model example structure schematic representation;
Fig. 2 is the utility model embodiment application structure schematic representation.
Among the figure: 1, high-temperature resistant seal ring; 2, fire-resistant heat insulating material; 3, tubular configured joint body; 4, high-temperature coating; 5, conveying steel pipe.
Embodiment
As shown in Figure 1, the outer imperial palace of the two-port of tubular configured joint body 3 is little, in two-port twice high-temperature resistant seal ring 1 is installed respectively, high-temperature resistant seal ring 1 reaches the purpose that stops conveying steel pipe 5 interior media to enter gap between tubular configured joint body 3 and conveying steel pipe 5 inwalls away from welding heat affected zone.Tubular configured joint body 3 surface applied have high-temperature coating 4, note making protective layer evenly not have pinprick during the coating construction.Just curl fire-resistant heat insulating material 2 in the welding heat affected zone position at tubular configured joint body 3 middle parts, guarantee that coating is not damaged after the delivery pipe welding.Tubular configured joint body 3 length 〉=300mm, caliber 〉=φ 60mm.The quantity of the high-temperature resistant seal ring 1 at tubular configured joint body 3 two ends is between 1-5, and the optimum number value is between 2-3.
It comprises tubular configured joint body 3, and the surface of tubular configured joint body 3 scribbles high-temperature coating 4, and high-temperature resistant seal ring 1 is installed at tubular configured joint body 3 two ends respectively, curls fire-resistant heat insulating material 2 at the middle part of tubular configured joint body 3.
Fig. 2 has provided embodiment's structural representation in use, and tubular configured joint body 3 is put in the two ends of two joint conveying steel pipes 5, and two joint conveying steel pipes 5 are placed into the position that needs welding, and the length that tubular configured joint body 3 puts in the two joint conveying steel pipes 5 equate as far as possible.The external diameter of tubular configured joint body 3 cooperates consistent with the internal diameter of conveying steel pipe 5.The position of two joint conveying steel pipes, 5 butt welding is positions that tubular configured joint body 3 curls fire-resistant heat insulating material 2, and therefore, the high-temperature coating 4 of tubular configured joint body 3 surface applied can not damaged.High-temperature resistant seal ring 1 is used to stop media in the conveying steel pipe 5 to enter gap between tubular configured joint body 3 and conveying steel pipe 5 inwalls, and away from the welding heat affected zone of two joint conveying steel pipes 5, high-temperature resistant seal ring 1 is unaffected when 5 butt welding of two joint conveying steel pipes again for it.
The utility model adopts the technology that increases tubular configured joint body 3 in two joint conveying steel pipes 5, has solved the interior anticorrosion problem in steel pipeline welding weld bond zone effectively.Unite the technology of use by adopting fire-resistant heat insulating material and high-temperature coating, high temperature resistant, corrosion-resistant, can effectively aggressive medium and pipeline welding junction be kept apart, guarantee the anticorrosion grade at welding junction position and the conformity of the anticorrosion grade of body, guarantee the pipeline prolongation in working life.

Claims (4)

1, steel pipeline welding junction anti-corrosion protection joint; it is characterized in that: it comprises tubular configured joint body (3); the surface of tubular configured joint body (3) scribbles high-temperature coating (4); high-temperature resistant seal ring (1) is installed at tubular configured joint body (3) two ends respectively, curls fire-resistant heat insulating material (2) at the middle part of tubular configured joint body (3).
2, steel pipeline welding junction anti-corrosion protection joint according to claim 1 is characterized in that: the length 〉=300mm of described tubular configured joint body (3), caliber 〉=ф 60mm.
3, steel pipeline welding junction anti-corrosion protection joint according to claim 1 is characterized in that: the quantity of the high-temperature resistant seal ring (1) at described tubular configured joint body (3) two ends is between 1-5.
4, steel pipeline welding junction anti-corrosion protection joint according to claim 1 is characterized in that: the quantity of the high-temperature resistant seal ring (1) at described tubular configured joint body (3) two ends or between 2-3.
CN 200720032842 2007-09-24 2007-09-24 Steel pipe welding interface anti-corrosive protection joint Expired - Lifetime CN201137793Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200720032842 CN201137793Y (en) 2007-09-24 2007-09-24 Steel pipe welding interface anti-corrosive protection joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200720032842 CN201137793Y (en) 2007-09-24 2007-09-24 Steel pipe welding interface anti-corrosive protection joint

Publications (1)

Publication Number Publication Date
CN201137793Y true CN201137793Y (en) 2008-10-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200720032842 Expired - Lifetime CN201137793Y (en) 2007-09-24 2007-09-24 Steel pipe welding interface anti-corrosive protection joint

Country Status (1)

Country Link
CN (1) CN201137793Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107842668A (en) * 2017-09-29 2018-03-27 哈尔滨工业大学 Joint uses internal lining pipe preserving method during a kind of oil field pipe welding
CN110906111A (en) * 2018-09-14 2020-03-24 四川启昌管道工程有限责任公司 Novel steel pipeline welded connection position interior anticorrosive device
CN112483649A (en) * 2020-12-04 2021-03-12 江苏瀚洋精工科技有限公司 Sealing ring for oil exploitation equipment and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107842668A (en) * 2017-09-29 2018-03-27 哈尔滨工业大学 Joint uses internal lining pipe preserving method during a kind of oil field pipe welding
CN110906111A (en) * 2018-09-14 2020-03-24 四川启昌管道工程有限责任公司 Novel steel pipeline welded connection position interior anticorrosive device
CN112483649A (en) * 2020-12-04 2021-03-12 江苏瀚洋精工科技有限公司 Sealing ring for oil exploitation equipment and preparation method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090306

Address after: Shaanxi province Xi'an Weiyang Weiyang Road No. 151 in Changqing Garden District headquarters Changqing engineering technology and the Ministry of science and technology, zip code: 710021

Patentee after: Chuanqing Drilling Engineering Co., Ltd. of China National Petroleum Corporation

Address before: Department of science and technology, bureau of Exploration Bureau Changqing Changqing Garden District, Shaanxi, Xi'an 710021, China

Patentee before: Changqing Petroleum Prospection Bureau

ASS Succession or assignment of patent right

Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEERI

Free format text: FORMER OWNER: CHANGQING PETROLEUM EXPLORATION BUREAU

Effective date: 20090306

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20081022