CN105352671A - New method of pressure test and detection of welded joint of heat exchange pipe and floating tube plate of heat exchanger - Google Patents
New method of pressure test and detection of welded joint of heat exchange pipe and floating tube plate of heat exchanger Download PDFInfo
- Publication number
- CN105352671A CN105352671A CN201510636283.3A CN201510636283A CN105352671A CN 105352671 A CN105352671 A CN 105352671A CN 201510636283 A CN201510636283 A CN 201510636283A CN 105352671 A CN105352671 A CN 105352671A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- floating
- tube plate
- exchange pipe
- heat exchange
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a new method of pressure test and detection of a welded joint of a heat exchange pipe and a floating tube plate of a heat exchanger, belonging to the field of the welding pressure test technology of a floating tube plate and a heat exchange pipe of a heat exchanger. The problems of long period, high cost, material waste, small range of test pressure and the like in the prior art are solved. The new method provided by the invention comprises: assembling tube bundles of a floating heat exchanger and leading the tube bundles of the floating heat exchanger in housing; respectively connecting a compensating wire 2 with a visual screen 1 and a high-definition camera 3; allowing the high-definition camera 3 to pass through a heat exchange pipe 6 from the side of the fixed tube plate 5 to the floating tube plate 4; and observing whether leakage occurs at the welded joint of the heat exchange pipe 6 and the floating tube plate (4) through the visual screen 1 after pressurization or not. According to the invention, the process of the pressure test detection of the welded joint is free of manufacture of auxiliary tools or changing of structure of a device; the duration of pressure test and detection is reduced, work efficiency is improved, and the range of test pressure is enlarged; and the cost is decreased, and the waste of expenses of labor and materials caused by repeated disassembly is avoided.
Description
Art
The invention belongs to floating tubesheet in heat interchanger and weld pressure test process field with heat exchanger tube.
Background technology
China's dynamics of investment in the construction of the projects such as large-scale oil refining, large-scale Coal Chemical Industry, large ethene strengthens in recent years, and scale is also increasing.In order to maximize complete equipment adapt, heat exchange equipment, particularly movable tube sheets heat exchanger also to maximization, complicated development.
In movable tube sheets heat exchanger structure, it is bottleneck in this type of heat exchanger and difficult point that floating tubesheet and the pressure testing of heat exchanger tube welding joint are checked always.Along with its structure becomes increasingly complex, design pressure and the working pressure of equipment component are also more and more higher, cause the difficulty of pressure testing operation in equipment Manufacture Process to increase.Tradition pressure testing operation all adopts the method manufacturing pressure testing housing to carry out floating tubesheet and heat exchanger tube welding joint is checked, and this technique exists that fabrication cycle is long, cost is high, waste of material and the problem such as test pressure scope is little.
Summary of the invention
The invention solves that the cycle existed in prior art is long, cost is high, waste of material and the problem such as test pressure scope is little,
A kind of heat exchanger heat-exchanging tube and pipe sheet weld joint pressure testing new detecting method, running program is as follows:
(i) distinct mark is by row carried out to floating tubesheet 4;
(ii) on floating tubesheet 4 with heat exchanger tube 6 welding joint, divide good region to be detected;
(iii) pipeline of floating-head heat exchanger bundle is assembled, and introduce in apparatus casing;
(iv) visual screen 1 and high-definition camera 3 is connected respectively with compensating line 2;
(v) by high-definition camera 3 from stationary tubesheet 5 side, reach floating tubesheet 4 place by compensating line 2 through heat exchanger tube 6;
(vi) observe floating tubesheet 4 by visual screen 1 after pressurization and whether occur leakage problem with heat exchanger tube 6 welding joint place;
(vii), after having detected, high-definition camera 3 is taken out.
Advantage of the present invention is:
1. do not need manufacture auxiliary mould or change device structure in floating tubesheet and heat exchanger tube welding joint pressure testing checkout procedure;
2. decrease pressure testing and detect the duration, improve work efficiency, expand test pressure scope.
3. reducing cost, avoiding the waste because repeatedly dismantling labour cost and the material caused.
Accompanying drawing explanation
Fig. 1 heat exchanger heat-exchanging tube and pipe sheet weld joint pressure testing new detecting method schematic diagram,
In figure: visual screen 1, compensating line 2, high-definition camera 3, floating tubesheet 4, stationary tubesheet 5, heat exchanger tube 6.
Embodiment
Now by reference to the accompanying drawings Novel heat exchange tube of heat exchanger and pipe sheet weld joint pressure testing characterization processes are described further, high-definition camera 3 is extended floating tubesheet 4 position from heat exchanger tube 6 inside by compensating line 2, observes floating tubesheet 4 whether occur leakage problem after the pressurizing with heat exchanger tube 6 welding joint place by visual screen 1.Its characterization processes is specific as follows:
1, with the marking pen of color clear, floating tubesheet 4 is marked by row;
2, on tube sheet 4 with heat exchanger tube 6 welding joint, divide good region to be detected again, be convenient to recognize from visual screen 1;
3, pipeline of floating-head heat exchanger bundle is assembled, and introduce in apparatus casing;
4, visual screen 1 and high-definition camera 3 is connected respectively with compensating line 2;
5, by high-definition camera 3 from stationary tubesheet 5 side, reach floating tubesheet 4 place by compensating line 2 through heat exchanger tube 6;
6, observe floating tubesheet 4 by visual screen 1 after pressurization and whether occur leakage problem with heat exchanger tube 6 welding joint place;
7, after having detected, take out high-definition camera 3, require to carry out final assembling process according to device fabrication.
Claims (1)
1. heat exchanger heat-exchanging tube and a pipe sheet weld joint pressure testing new detecting method, it is characterized in that, running program is as follows:
(1) distinct mark is by row carried out to floating tubesheet (4);
(2) on floating tubesheet (4) with heat exchanger tube (6) welding joint, good region to be detected is divided;
(3) pipeline of floating-head heat exchanger bundle is assembled, and introduce in apparatus casing;
(4) visual screen (1) and high-definition camera (3) is connected respectively with compensating line (2);
(5) by high-definition camera (3) from stationary tubesheet (5) side, reach floating tubesheet (4) place by compensating line (2) through heat exchanger tube (6);
(6) observe floating tubesheet (4) by visual screen (1) after pressurization and whether occur leakage problem with heat exchanger tube (6) welding joint place;
(7), after having detected, high-definition camera 3 is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636283.3A CN105352671A (en) | 2015-09-30 | 2015-09-30 | New method of pressure test and detection of welded joint of heat exchange pipe and floating tube plate of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636283.3A CN105352671A (en) | 2015-09-30 | 2015-09-30 | New method of pressure test and detection of welded joint of heat exchange pipe and floating tube plate of heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105352671A true CN105352671A (en) | 2016-02-24 |
Family
ID=55328678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510636283.3A Pending CN105352671A (en) | 2015-09-30 | 2015-09-30 | New method of pressure test and detection of welded joint of heat exchange pipe and floating tube plate of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105352671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092453A (en) * | 2016-06-02 | 2016-11-09 | 云南文山铝业有限公司 | The method of maintenance heat exchanger internal hemorrhage due to trauma |
| CN114993846A (en) * | 2022-08-05 | 2022-09-02 | 山西阳煤化工机械（集团）有限公司 | Device for testing pressure of heat exchanger and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326226A (en) * | 1998-05-19 | 1999-11-26 | Mega Float Gijutsu Kenkyu Kumiai | Defect-detecting device of large watertight structure |
| JP2000035372A (en) * | 1998-07-16 | 2000-02-02 | Ishikawajima Inspection & Instrumentation Co | Inspection method through foaming by infrared ray |
| CN200982912Y (en) * | 2006-08-08 | 2007-11-28 | 姜元增 | Pressure test and working installation of core of floating header heat exchanger |
| CN201081598Y (en) * | 2007-08-01 | 2008-07-02 | 中国石油大庆石油化工总厂 | Pressure test device for floating head exchanger |
| JP2010217069A (en) * | 2009-03-18 | 2010-09-30 | Kayaba Ind Co Ltd | Device and method for inspection of fluid leakage |
| JP2013174492A (en) * | 2012-02-24 | 2013-09-05 | Denso Corp | Inspection device and inspection method |
-
2015
- 2015-09-30 CN CN201510636283.3A patent/CN105352671A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326226A (en) * | 1998-05-19 | 1999-11-26 | Mega Float Gijutsu Kenkyu Kumiai | Defect-detecting device of large watertight structure |
| JP2000035372A (en) * | 1998-07-16 | 2000-02-02 | Ishikawajima Inspection & Instrumentation Co | Inspection method through foaming by infrared ray |
| CN200982912Y (en) * | 2006-08-08 | 2007-11-28 | 姜元增 | Pressure test and working installation of core of floating header heat exchanger |
| CN201081598Y (en) * | 2007-08-01 | 2008-07-02 | 中国石油大庆石油化工总厂 | Pressure test device for floating head exchanger |
| JP2010217069A (en) * | 2009-03-18 | 2010-09-30 | Kayaba Ind Co Ltd | Device and method for inspection of fluid leakage |
| JP2013174492A (en) * | 2012-02-24 | 2013-09-05 | Denso Corp | Inspection device and inspection method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092453A (en) * | 2016-06-02 | 2016-11-09 | 云南文山铝业有限公司 | The method of maintenance heat exchanger internal hemorrhage due to trauma |
| CN106092453B (en) * | 2016-06-02 | 2020-11-20 | 云南文山铝业有限公司 | Method for overhauling inner leakage of heat exchanger |
| CN114993846A (en) * | 2022-08-05 | 2022-09-02 | 山西阳煤化工机械（集团）有限公司 | Device for testing pressure of heat exchanger and using method thereof |
| CN114993846B (en) * | 2022-08-05 | 2022-10-14 | 山西阳煤化工机械（集团）有限公司 | Device for testing pressure of heat exchanger and using method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |
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| WD01 | Invention patent application deemed withdrawn after publication |