CN103615627A - Processing method for power station boiler economizer leakage - Google Patents
Processing method for power station boiler economizer leakage Download PDFInfo
- Publication number
- CN103615627A CN103615627A CN201310636700.5A CN201310636700A CN103615627A CN 103615627 A CN103615627 A CN 103615627A CN 201310636700 A CN201310636700 A CN 201310636700A CN 103615627 A CN103615627 A CN 103615627A
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- China
- Prior art keywords
- economizer
- plug
- leakage
- processing method
- station boiler
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
- F16L55/1116—Plugs glued or welded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a processing method for a power station boiler economizer leakage and relates to the field of power station boiler overhauling. The processing method for the power station boiler economizer leakage is reliable in pipe blocking quality of an economizer. The processing method for the power station boiler economizer leakage includes the following steps that a, all economizer pipes are checked, the economizer pipe in leakage is determined, each economizer pipe comprises a horizontal section, an arc section and a header connection section, and the header connection sections are connected with a header; b, the horizontal section of the economizer pipe in leakage is cut into two sections, wherein the section from a cut to the header is reserved, the part not reserved is a leakage part, the distance from the cut to the arc section is 200-500mm, and the cut is arranged obliquely and faces upwards; c, a plug is inserted into the economizer pipe from the cut, the upper portion of the plug is exposed out of the economizer pipe, and the lower portion of the plug is located in the economizer pipe; d, the plug and the economizer pipe are welded. The welding area of the plug can be seen above the economizer pipe, which helps to guarantee welding quality between the plug and the economizer pipe.
Description
Technical field
The present invention relates to station boiler maintenance field, relate in particular to a kind of station boiler economizer leakage processing method.
Background technique
In coal-burning power plant's pulverized coal fired boiler flue gas, a large amount of flying dusts, must cause economizer leakage machine halt trouble, the generating of surfing the Net as early as possible after eliminating in order to ensure equipment deficiency, and conventional employing of power plant restrained the mode in the plugging of header position to economizer leakage.Specifically as shown in Figure 1, cut the leakage part of economizer tube, otch is vertical plane, from incision, inserts plug, by plug and the welding of remaining economizer tube.Because economizer is restrained close row; and soldering point and header position be nearly (as Fig. 1) very; plugging welding region has part not in viewing area (being plug bottom); deposit welding dead band, visual angle; welding quality can not get ensureing; after may existing boiler to restart, because weld bond is reprocessed the risk of again shutting down blowing out.
Summary of the invention
The technical problem to be solved in the present invention is: the station boiler economizer leakage processing method that a kind of economizer tube shutoff reliable in quality is provided.
For addressing the above problem the technological scheme of employing, be: station boiler economizer leakage processing method, comprises the steps:
A, check each economizer tube, determine the economizer tube of leaking, economizer tube comprises horizontal segment, arcuate segment and the header linkage section setting gradually, and header linkage section is connected with header;
B, the horizontal segment of the economizer tube of leakage is cut into two sections, otch to header section retains, the part of the part not retaining for leaking, and otch is 200-500mm to arcuate segment distance, otch is obliquely installed and towards top;
C, plug is inserted to economizer tube from incision, economizer tube is exposed on plug top, and plug bottom is positioned at economizer tube;
D, by the welding of plug and economizer tube.
Further: kerf is plane shape, the angle of otch and horizontal segment is 30-45 degree.
Further: plug is shaped as frustoconic shape.
Further: plug tapering is 1:20.
The invention has the beneficial effects as follows: the welding region of plug all can be seen from top, economizer tube, is beneficial to and guarantees plug and economizer tube welding quality, avoids weld joint to leak, and guarantees leak stopping quality.
Accompanying drawing explanation
Fig. 1 is prior art station boiler economizer leakage processing method schematic diagram;
Fig. 2 is station boiler of the present invention economizer leakage processing method schematic diagram;
In figure, be labeled as: economizer tube 1, weld not visible region 2, header 3, header linkage section 4, arcuate segment 5, horizontal segment 6, plug 7, otch 8, welding viewing area 9.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Station boiler economizer leakage processing method, is characterized in that comprising the steps:
A, check each economizer tube 1, determine the economizer tube 1 of leaking, economizer tube 1 comprises horizontal segment 6, arcuate segment 5 and the header linkage section 4 setting gradually, and header linkage section 4 is connected with header 3;
B, the horizontal segment of the economizer tube of leakage 16 is cut into two sections, the part of the part not retaining for leaking, otch 8 is to 3 sections of reservations of header, and otch 8 is 200-500mm to arcuate segment 5 distances, and otch 8 is obliquely installed and towards top;
C, by plug 7 from otch 8 insertion economizer tube 1, economizer tube 1 is exposed on plug 7 tops, plug 7 bottoms are positioned at economizer tube 1;
D, by plug 7 and economizer tube 1 welding.
The welding region of plug 7 all can see (to be that weld seam is all positioned at welding viewing area 9 from top, economizer tube, all be not positioned at the not visible region 2 of welding), be beneficial to the welding quality that guarantees plug 7 and economizer tube 1, avoid weld joint to leak, guarantee leak stopping quality.
Check that the method whether leak each economizer tube 1 can be as follows: after shutdown of boiler, before boiler pressure does not arrive zero, check and confirm whether each economizer tube 1 leaks gas.
Otch 8 preferably meets the following requirements: otch 8 is shaped as plane shape, and otch 8 is 30-45 degree with the angle of horizontal segment 6.Otch 8 cuttings of plane shape are convenient; Otch 8 is too small with the angle of horizontal segment 6, the long cutting inconvenience of incision length; Otch 8 is excessive with the angle of horizontal segment 6, is unfavorable for reaching the effect of " economizer tube 1 is exposed on plug 7 tops, and plug 7 bottoms are positioned at economizer tube 1 ".
Claims (4)
1. station boiler economizer leakage processing method, is characterized in that comprising the steps:
A, check each economizer tube (1), determine the economizer tube (1) of leaking, economizer tube (1) comprises horizontal segment (6), arcuate segment (5) and the header linkage section (4) setting gradually, and header linkage section (4) is connected with header (3);
B, the horizontal segment (6) of the economizer tube (1) of leaking is cut into two sections, otch (8) to header (3) section retains, the part of the part not retaining for leaking, otch (8) is 200-500mm to arcuate segment (5) distance, otch (8) is obliquely installed and towards top;
C, plug (7) is inserted to economizer tube (1) from otch (8), economizer tube (1) is exposed on plug (7) top, and plug (7) bottom is positioned at economizer tube (1);
D, by the welding of plug (7) and economizer tube (1).
2. station boiler according to claim 1 economizer leakage processing method, is characterized in that: otch (8) is shaped as plane shape, and otch (8) is 30-45 degree with the angle of horizontal segment (6).
3. station boiler according to claim 2 economizer leakage processing method, is characterized in that: plug (7) is shaped as frustoconic shape.
4. station boiler according to claim 3 economizer leakage processing method, is characterized in that: plug (7) tapering is 1:20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310636700.5A CN103615627B (en) | 2013-11-28 | 2013-11-28 | Power station boiler economizer leakage processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310636700.5A CN103615627B (en) | 2013-11-28 | 2013-11-28 | Power station boiler economizer leakage processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103615627A true CN103615627A (en) | 2014-03-05 |
| CN103615627B CN103615627B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310636700.5A Active CN103615627B (en) | 2013-11-28 | 2013-11-28 | Power station boiler economizer leakage processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677576A (en) * | 2015-02-09 | 2015-06-03 | 中国计量学院 | Infrared thermal imaging low-temperature economizer leakage detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0539893A (en) * | 1991-02-19 | 1993-02-19 | Ishikawajima Harima Heavy Ind Co Ltd | Vessel through pipe repairing method |
| JP2003314782A (en) * | 2002-04-23 | 2003-11-06 | Mitsubishi Heavy Ind Ltd | Method of repairing pipe connection portion, and fluid piping |
| US20090184095A1 (en) * | 2008-01-23 | 2009-07-23 | Hoya Corporation | Method of Connecting Pipe Members for Endoscope |
| CN102395443A (en) * | 2009-04-15 | 2012-03-28 | 本田技研工业株式会社 | Weld joint of aluminum alloy member |
| CN202852290U (en) * | 2012-09-25 | 2013-04-03 | 福州振协管道有限公司 | Red copper seamless thin-wall socket type water dropping lateral tee structure |
-
2013
- 2013-11-28 CN CN201310636700.5A patent/CN103615627B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0539893A (en) * | 1991-02-19 | 1993-02-19 | Ishikawajima Harima Heavy Ind Co Ltd | Vessel through pipe repairing method |
| JP2003314782A (en) * | 2002-04-23 | 2003-11-06 | Mitsubishi Heavy Ind Ltd | Method of repairing pipe connection portion, and fluid piping |
| US20090184095A1 (en) * | 2008-01-23 | 2009-07-23 | Hoya Corporation | Method of Connecting Pipe Members for Endoscope |
| CN102395443A (en) * | 2009-04-15 | 2012-03-28 | 本田技研工业株式会社 | Weld joint of aluminum alloy member |
| CN202852290U (en) * | 2012-09-25 | 2013-04-03 | 福州振协管道有限公司 | Red copper seamless thin-wall socket type water dropping lateral tee structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677576A (en) * | 2015-02-09 | 2015-06-03 | 中国计量学院 | Infrared thermal imaging low-temperature economizer leakage detection device |
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| CN103615627B (en) | 2015-09-16 |
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