CN102528349A - Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler - Google Patents
Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler Download PDFInfo
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- CN102528349A CN102528349A CN2012100141462A CN201210014146A CN102528349A CN 102528349 A CN102528349 A CN 102528349A CN 2012100141462 A CN2012100141462 A CN 2012100141462A CN 201210014146 A CN201210014146 A CN 201210014146A CN 102528349 A CN102528349 A CN 102528349A
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- pore
- short tube
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- crackle
- location
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 25
- 239000002932 luster Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims description 35
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 18
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000005336 cracking Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for positioning the center of a pipe hole during crack repair of the pipe hole on a pressure pipeline or a header of a boiler, which has the advantages of being capable of fast and precisely positioning the center of the pipe hole, further reducing welding filling amount and improve repair quality and efficiency. The method comprises the following steps of: (1) preparing a short pipe, wherein the material of the short pipe is the same with that of the pipeline or the header, the length of the short pipe is slightly larger than the wall thickness of the pipeline or the header, the inner diameter of the short pipe is not more than the diameter of the pipe orifice to be repaired, and the outer diameter of the short pipe is less than the minimal size of a crack groove; (2) processing the inner diameter of the short pipe to be the same as that of the pipe hole, and burnishing the outer wall of the short pipe to show metal luster for later use; and (3) firstly performing overlaying welding and rounding on a bevel of the crack groove, then positioning the short pipe, performing tack welding on the short pipe, and further filling up the bevel outside the short pipe by follow-up welding.
Description
Technical field
The present invention relates to a kind of pore Crack repair method, relate in particular to location pore center method when the pore crackle is repaired on a kind of boiler pressure pipeline or the collection case.
Background technology
In the station boiler check, regular meeting finds that there is crackle in the pore periphery on pressure pipeline or the boiler header, and after the fracture of attemperator collection case sparge pipe, regular meeting is cracking around the pore down.If the pore edge crack is more, especially crackle is center when radially distributing (as shown in Figure 1) with the pore, this type crackle being mended by replacing a damaged part when repairing, tends to destroy the pore center, when promptly crackle is excavated, has dug up whole or most of pores.Because on-the-spot REPAIR WELDING generally is a manual welding; When REPAIR WELDING is carried out in irregular grooving; The pore that welder's built-up welding is got up not only circularity is not enough, and the pore that REPAIR WELDING is got up tends to lose original center, and this is for the structure of being had relatively high expectations in the pore center; Such as the sparge pipe pore of direct-contact desuperheater, can cause sparge pipe to be difficult for installing or not installing.
Summary of the invention
The object of the invention is exactly for addressing the above problem; Location pore center method when the pore crackle is repaired on a kind of boiler pressure pipeline or the collection case is provided; It can fast, accurately locate the pore center, and can reduce the welding loading, improves repairing quality and efficient.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
Location pore center method when the pore crackle is repaired on a kind of boiler pressure pipeline or the collection case, its step is:
1) it is identical with pipeline or collection case to prepare one section material, and length is slightly larger than pipeline or collects tank wall thick, and internal diameter is less than or equal to pore diameter to be repaired, the external diameter short tube less than crackle grooving minimum dimension;
2) the short tube internal diameter is processed into identical with the pore internal diameter, the short tube outer wall polish metallic luster, and is subsequent use;
3) earlier look for circle in the built-up welding of crackle grooving groove, spacer ferrule then, behind the short tube tack welding, the follow-up welding groove that short tube is outer fills up and gets final product.
In the said step 3), adopt range estimation during the short tube location and combine to put into the method for short tube test, when treating the groove bottom,, adopt the dimension measurement method spacer ferrule according to the pore position on the design drawing near the short tube external diameter.
During said short tube location,, adopt pre-assembled spacer ferrule in kind according to design feature.
During said short tube location; Locate with sparge pipe; Promptly earlier the pore opposite prepackage of sparge pipe from cracking prepared, after sparge pipe reaches in the pore, short tube is inserted in the sparge pipe positions; Then short tube and collection case are carried out tack welding, and then with the repair welding of carrying out remainder after the sparge pipe extraction.
The invention has the beneficial effects as follows: not only can fast, accurately locate the pore center, reduce the welding loading, avoid the processing of built-up welding pore hole wall, what is more important has guaranteed to repair the circularity of pore, improves repairing quality and efficient.
Description of drawings
Fig. 1 is the radial crack sketch map around the pore;
Fig. 2 short tube network for location.
Wherein, 1. pore, 2. short tube.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1:
As shown in Figure 2, its step is following:
1, it is identical with pipeline (or collection case) to prepare one section material, and length is slightly larger than pipeline (or collection case) wall thickness, and internal diameter is less than or equal to pore diameter to be repaired, the external diameter short tube less than crackle grooving minimum dimension.
2, the short tube internal diameter is processed into identical with the pore internal diameter, the short tube outer wall polish metallic luster, and is subsequent use.
3, look for circle in the built-up welding of crackle grooving groove earlier; When estimating the groove bottom near the short tube external diameter; (can locate with sparge pipe when locating according to drawing or design feature spacer ferrule like direct-contact desuperheater header pore; As shown in Figure 2, behind the short tube tack welding, the follow-up welding groove that short tube is outer fills up and gets final product.
Embodiment 2:
Invention also can be adopted range estimation and combine to put into the method for short tube test when short tube is located, when treating the groove bottom near the short tube external diameter, according to the pore position on the design drawing, adopt the dimension measurement method spacer ferrule.
Claims (4)
1. location pore center method when the pore crackle is repaired on boiler pressure pipeline or the collection case is characterized in that its step is:
1) it is identical with pipeline or collection case to prepare one section material, and length is slightly larger than pipeline or collects tank wall thick, and internal diameter is less than or equal to pore diameter to be repaired, the external diameter short tube less than crackle grooving minimum dimension;
2) the short tube internal diameter is processed into identical with the pore internal diameter, the short tube outer wall polish metallic luster, and is subsequent use;
3) earlier look for circle in the built-up welding of crackle grooving groove, spacer ferrule then, behind the short tube tack welding, the follow-up welding groove that short tube is outer fills up and gets final product.
2. location pore center method when the pore crackle is repaired on boiler pressure pipeline as claimed in claim 1 or the collection case; It is characterized in that; In the said step 3), adopt range estimation during the short tube location and combine to put into the method for short tube test, when treating the groove bottom near the short tube external diameter; According to the pore position on the design drawing, adopt the dimension measurement method spacer ferrule.
3. location pore center method is characterized in that when the pore crackle was repaired on boiler pressure pipeline as claimed in claim 1 or the collection case, during said short tube location, according to design feature, adopted pre-assembled spacer ferrule in kind.
4. location pore center method is characterized in that when the pore crackle was repaired on boiler pressure pipeline as claimed in claim 3 or the collection case, during said short tube location; Locate with sparge pipe; Promptly earlier the pore opposite prepackage of sparge pipe from cracking prepared, after sparge pipe reaches in the pore, short tube is inserted in the sparge pipe positions; Then short tube and collection case are carried out tack welding, and then with the repair welding of carrying out remainder after the sparge pipe extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014146.2A CN102528349B (en) | 2012-01-17 | 2012-01-17 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014146.2A CN102528349B (en) | 2012-01-17 | 2012-01-17 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102528349A true CN102528349A (en) | 2012-07-04 |
| CN102528349B CN102528349B (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210014146.2A Active CN102528349B (en) | 2012-01-17 | 2012-01-17 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
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| CN (1) | CN102528349B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174979A (en) * | 2014-09-11 | 2014-12-03 | 兰州西固热电有限责任公司 | Welding method for temperature pipe and reheat cooling section pipe |
| CN104191073A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Temperature tube and steam tube welding method |
| CN104227196A (en) * | 2014-09-11 | 2014-12-24 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and reheating heat section pipe |
| CN104384673A (en) * | 2014-09-11 | 2015-03-04 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and main water feeding pipe |
| CN106180987A (en) * | 2016-08-23 | 2016-12-07 | 郑州荣奇热电能源有限公司 | A kind of high temperature superheater imports and exports header restorative procedure |
| CN106180988A (en) * | 2016-08-23 | 2016-12-07 | 郑州荣奇热电能源有限公司 | A kind of high temperature superheater imports and exports header restorative procedure |
| CN114523258A (en) * | 2020-11-23 | 2022-05-24 | 华域皮尔博格有色零部件(上海)有限公司 | Repairing method for damaged area of cold thin wall of die casting die |
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| JPS60238089A (en) * | 1984-05-11 | 1985-11-26 | Mitsubishi Heavy Ind Ltd | Welding robot device for boiler header |
| CN1038340A (en) * | 1989-02-02 | 1989-12-27 | 毕宏毅 | Gas-range fire-peeping mirror |
| CN1410222A (en) * | 2001-09-21 | 2003-04-16 | 重庆钢铁(集团)有限责任公司 | Method of repairing defect of metallic member using embedded mending welding |
| CN101245885A (en) * | 2007-02-13 | 2008-08-20 | 北京安科管道工程科技有限公司 | Mend filling and renovation reinforced method for bearing equipment wall surface |
| CN201279660Y (en) * | 2008-11-05 | 2009-07-29 | 成都市经博科技开发有限公司 | Soldering backing plate for tube soldering and positioning device |
| CN102120292A (en) * | 2011-03-18 | 2011-07-13 | 中国航空工业集团公司北京航空制造工程研究所 | Vacuum brazing repairing method for cracks of high-temperature alloy thin-wall part |
-
2012
- 2012-01-17 CN CN201210014146.2A patent/CN102528349B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238089A (en) * | 1984-05-11 | 1985-11-26 | Mitsubishi Heavy Ind Ltd | Welding robot device for boiler header |
| CN1038340A (en) * | 1989-02-02 | 1989-12-27 | 毕宏毅 | Gas-range fire-peeping mirror |
| CN1410222A (en) * | 2001-09-21 | 2003-04-16 | 重庆钢铁(集团)有限责任公司 | Method of repairing defect of metallic member using embedded mending welding |
| CN101245885A (en) * | 2007-02-13 | 2008-08-20 | 北京安科管道工程科技有限公司 | Mend filling and renovation reinforced method for bearing equipment wall surface |
| CN201279660Y (en) * | 2008-11-05 | 2009-07-29 | 成都市经博科技开发有限公司 | Soldering backing plate for tube soldering and positioning device |
| CN102120292A (en) * | 2011-03-18 | 2011-07-13 | 中国航空工业集团公司北京航空制造工程研究所 | Vacuum brazing repairing method for cracks of high-temperature alloy thin-wall part |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174979A (en) * | 2014-09-11 | 2014-12-03 | 兰州西固热电有限责任公司 | Welding method for temperature pipe and reheat cooling section pipe |
| CN104191073A (en) * | 2014-09-11 | 2014-12-10 | 兰州西固热电有限责任公司 | Temperature tube and steam tube welding method |
| CN104227196A (en) * | 2014-09-11 | 2014-12-24 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and reheating heat section pipe |
| CN104384673A (en) * | 2014-09-11 | 2015-03-04 | 兰州西固热电有限责任公司 | Welding method of temperature pipe and main water feeding pipe |
| CN106180987A (en) * | 2016-08-23 | 2016-12-07 | 郑州荣奇热电能源有限公司 | A kind of high temperature superheater imports and exports header restorative procedure |
| CN106180988A (en) * | 2016-08-23 | 2016-12-07 | 郑州荣奇热电能源有限公司 | A kind of high temperature superheater imports and exports header restorative procedure |
| CN114523258A (en) * | 2020-11-23 | 2022-05-24 | 华域皮尔博格有色零部件(上海)有限公司 | Repairing method for damaged area of cold thin wall of die casting die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102528349B (en) | 2015-03-04 |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121102 |
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Effective date of registration: 20121102 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant after: SHANDONG ELECTRIC POWER Research Institute Applicant after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant before: SHANDONG ELECTRIC POWER Research Institute |
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Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: Shandong Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 250002, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: Shandong Electric Power Research Institute Patentee before: State Grid Corporation of China |
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Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: State Grid Corporation of China |
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Effective date of registration: 20220124 Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: STATE GRID CORPORATION OF CHINA |