CN201795230U - Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline - Google Patents

Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline Download PDF

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Publication number
CN201795230U
CN201795230U CN2010202817372U CN201020281737U CN201795230U CN 201795230 U CN201795230 U CN 201795230U CN 2010202817372 U CN2010202817372 U CN 2010202817372U CN 201020281737 U CN201020281737 U CN 201020281737U CN 201795230 U CN201795230 U CN 201795230U
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CN
China
Prior art keywords
elbow pipe
bend pipe
steel
pipe
direct
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 - Fee Related
Application number
CN2010202817372U
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Chinese (zh)
Inventor
牛三冲
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.)
HENAN ZHONGKE ANTI-CORROSION INSULATION WORKS Co Ltd
Original Assignee
HENAN ZHONGKE ANTI-CORROSION INSULATION WORKS Co Ltd
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.)
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Publication date
Application filed by HENAN ZHONGKE ANTI-CORROSION INSULATION WORKS Co Ltd filed Critical HENAN ZHONGKE ANTI-CORROSION INSULATION WORKS Co Ltd
Priority to CN2010202817372U priority Critical patent/CN201795230U/en
Application granted granted Critical
Publication of CN201795230U publication Critical patent/CN201795230U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A prefabricated steel bushing steel direct-buried elbow pipe applicable to a steam pipeline comprises a working elbow pipe, an outer protective steel pipe sheathed outside the working elbow pipe and a thermal insulation material, and is characterized in that: the outer protective steel pipe has an arc structure that has no radial welded joint and is formed by hot pressing, pushing or simmering. The elbow pipe has the advantages as follows: as the outer protective steel pipe has an arc structure that has no radial welded joint and is formed by hot pressing, pushing or simmering and can not produce great stress concentration, the existing defect of 'creased bending' is overcome. In addition, as the appearance of the whole elbow pipe is smooth, the external anticorrosion quality of the elbow pipe can be obviously improved.

Description

Be applicable to the prefabricated steel bushing steel direct-buried bend pipe of steam line
Technical field
The utility model relates to steam conveying pipe, particularly a kind of prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line.
Background technique
At present, be used to carry high-temperature steam to use steel-sleeve steel steam insulation pipe usually, its formation is at work bend pipe outside suit external protective steel tube, the external protective steel tube of past usefulness is a broken line type welding bend pipe, and it is curved to be commonly called as dried shrimp, and its structure shape as shown in Figure 1, the shortcoming of the outer pillar of this dried shrimp bending line is that weld strength is low, after the outer pillar of pipeline heat supply running heated up, the curved weld seam of dried shrimp easily produced bigger stress and concentrates, and weld seam suffers stress rupture easily.In addition and since dried shrimp curved be broken line shape and not slick and sly, cause outer corrosion-resistant difficult quality guarantee.
Summary of the invention
A kind of prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line that the purpose of this utility model designs at existing problem in the above-mentioned prior art just.
The purpose of this utility model is achieved through the following technical solutions: the prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line of the present utility model, comprise the work bend pipe, be sleeved on the external protective steel tube and the thermal insulating material of work bend pipe outside, wherein: external protective steel tube is hot pressing, pushing or the arc-shaped structure that is simmered into the no longitudinal ream of type.
In the utility model, the radius of curvature of work bend pipe and external protective steel tube is identical, and promptly work bend pipe and external protective steel tube are concentric.
Advantage of the present utility model is: because external protective steel tube is hot pressing, pushing or the arc-shaped structure that is simmered into the no longitudinal ream of type, can not produce bigger stress concentrates, overcome the defective of " dried shrimp is curved " in the past, because of whole bend pipe profile slyness, its outer anticorrosive quality can obviously be improved in addition.
Description of drawings
The broken line type welding bend pipe structure schematic representation that Fig. 1 uses for prior art.
Among the figure: 1 ' be the work bend pipe, 2 ' be dried shrimp bending line external protective steel tube, 3 ' be thermal insulation layer, 4 ' be interim supporting element, 5 ' be longitudinal ream.
Fig. 2 is the utility model structural representation.
Among the figure: 1 is the work bend pipe, and 2 is the circular arc external protective steel tube, and 3 is thermal insulation layer, and 4 is interim supporting element.
Embodiment
The utility model is described further below in conjunction with accompanying drawing:
As shown in Figure 2: the prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line of the present utility model, comprise work bend pipe 1, be sleeved on the external protective steel tube 2 and the thermal insulating material 3 of work bend pipe outside, wherein: external protective steel tube 2 is hot pressing, pushing or the arc-shaped structure that is simmered into the no longitudinal ream of type, the radius of curvature of work bend pipe and external protective steel tube equates that promptly work bend pipe and external protective steel tube are matched to one heart.

Claims (2)

1. prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line, comprise the work bend pipe, be sleeved on the external protective steel tube and the thermal insulating material of work bend pipe outside, it is characterized in that: external protective steel tube is hot pressing, pushing or the arc-shaped structure that is simmered into the no longitudinal ream of type.
2. the prefabricated steel bushing steel direct-buried bend pipe that is applicable to steam line according to claim 1 is characterized in that: the radius of curvature of work bend pipe and external protective steel tube is identical.
CN2010202817372U 2010-08-05 2010-08-05 Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline Expired - Fee Related CN201795230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202817372U CN201795230U (en) 2010-08-05 2010-08-05 Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202817372U CN201795230U (en) 2010-08-05 2010-08-05 Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline

Publications (1)

Publication Number Publication Date
CN201795230U true CN201795230U (en) 2011-04-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202817372U Expired - Fee Related CN201795230U (en) 2010-08-05 2010-08-05 Prefabricated steel bushing steel direct-buried elbow pipe applicable to steam pipeline

Country Status (1)

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CN (1) CN201795230U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777730A (en) * 2012-07-25 2012-11-14 大连科华热力管道有限公司 Directly-buried steam pipeline for long-distance transportation
CN103062576A (en) * 2011-10-24 2013-04-24 胜利油田胜利石油化工建设有限责任公司 Foam insulated pipe plugging device and plugging method
CN107013780A (en) * 2017-06-02 2017-08-04 中国二十冶集团有限公司 A kind of method and compensator for eliminating Blank drawing machine drain mast high temperature additional stress
RU178730U1 (en) * 2017-02-10 2018-04-18 Руслан Александрович Севрюков Mechanical seal for the manufacture of thermally insulated pipes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103062576A (en) * 2011-10-24 2013-04-24 胜利油田胜利石油化工建设有限责任公司 Foam insulated pipe plugging device and plugging method
CN102777730A (en) * 2012-07-25 2012-11-14 大连科华热力管道有限公司 Directly-buried steam pipeline for long-distance transportation
RU178730U1 (en) * 2017-02-10 2018-04-18 Руслан Александрович Севрюков Mechanical seal for the manufacture of thermally insulated pipes
CN107013780A (en) * 2017-06-02 2017-08-04 中国二十冶集团有限公司 A kind of method and compensator for eliminating Blank drawing machine drain mast high temperature additional stress

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Legal Events

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110413

Termination date: 20130805