CN2851865Y - Steam flow adapter capable of reducing boiler heat deviation - Google Patents
Steam flow adapter capable of reducing boiler heat deviation Download PDFInfo
- Publication number
- CN2851865Y CN2851865Y CN 200520042233 CN200520042233U CN2851865Y CN 2851865 Y CN2851865 Y CN 2851865Y CN 200520042233 CN200520042233 CN 200520042233 CN 200520042233 U CN200520042233 U CN 200520042233U CN 2851865 Y CN2851865 Y CN 2851865Y
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- tube
- boiler
- steam flow
- flow adapter
- steam
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- Expired - Fee Related
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to a device capable of reducing the thermal deviation of a boiler supperheater and a boiler reheater. The utility model is characterized in that a steam flow adapter is additionally arranged at a boiler outer section of an inlet, or the middle, or an outlet of one or a plurality of small heated tubes of a tube panel; similarly, a plurality of tube panels are connected in parallel in the width of a boiler, and a steam flow adapter is additionally arranged at a boiler outer section of an inlet, or the middle, or an outlet of all of tubes or part of the tubes of one or a plurality of small heated tube panels in the tube panels. In addition, a steam flow adapter is additionally arranged on an inlet air guide tube or an outlet air guide tube of a plurality of small heated tube panels.
Description
Technical field:
The utility model relates to electricity generation boiler and other boiler technology fields, belongs to specifically to avoid boiler to be in operation taking place superheater or reheater that a kind of device of pipe overtemperature demolition accident takes place too greatly because of thermal deviation.
Technical background:
In recent years, the many boilers of China, particularly jumbo homemade, import and introduction type electricity generation boiler are in operation pipe overtemperature (tube wall temperature is above the allowable temperature of the used steel) demolition accident of superheater or reheater take place too greatly because of thermal deviation.In power plant, a pipe explosion meeting causes the economic loss of millions of units in the boiler.So-called thermal deviation is too big, is meant that a pipe of superheater or reheater is organized between each sheet tube panel, and has big deviation with caloric receptivity or the steam flow between the pipe in parallel of each root in a slice tube panel.Little its outlet temperature of pipe of big pipe or steam flow that recepts the caloric will raise.The overtemperature tube burst accident will take place when vapor (steam) temperature is elevated to the allowable temperature that makes tube wall temperature surpass the pipe steel.Because the calculating accuracy of thermal deviation is not high in the boiler design, so the overtemperature tube burst accident of superheater and reheater is a lot of in the boiler of power plant and other purposes.
Summary of the invention:
The purpose of this utility model provides a kind of change and distributes along the steam flow between boiler superheater or each root pipe of reheater, compensate their caloric receptivity inhomogeneities, reaching the tube wall temperature that makes all pipes and be tending towards uniform purpose, is a kind of device that reduces the boiler hot deviation of fundamentally eliminating the overtemperature tube burst accident.
The technical measures of being taked: the utility model is at several tube panels in parallel of existing boiler structure, comprise the import steam guiding tube, the inlet header case, outlet steam guiding tube and outlet collection case, every tube panel is formed by " U " type or " W " type, one or the import of some pipes that its feature is absorbed heat little in a slice tube panel, the outer section of stove middle or outlet installs the steam flow adapter additional, perhaps install the steam flow adapter additional, or also can in the import or export steam guiding tube of little tube panel that is heated, install the steam flow adapter additional in section outside the pipe stove of the little tube panel of being heated of boiler width parallel connection.Above-mentioned steam flow adapter is single-stage or twin-stage hole sheet pattern (pattern of perforate can be circular or other shapes), also can be the venturi-type formula, or the less section of a pipe pattern of internal diameter etc.
The utility model installs the steam flow adapter additional in absorb heat little tube panel or pipe, avoid the overtemperature tube burst accident to take place thereby force big tube panel of heat absorption or the steam flow in the pipe to increase.Pipe explosion accident of minimizing can be saved the economic loss of millions of units in power plant.
Description of drawings:
Fig. 1 is the utility model example structure figure;
Fig. 2 is another example structure of the utility model figure;
Fig. 3 is circular single-stage hole sheet pattern steam flow adapter structure figure;
Fig. 4 is circular twin-stage hole sheet pattern steam flow adapter structure figure;
Fig. 5 is Venturi tube pattern steam flow adapter structure figure;
Fig. 6 is straight tube pattern steam flow adapter structure figure.
The specific embodiment:
Existing boiler is in operation the allowable temperature of the tube temperature of superheater or reheater above used steel takes place, and demolition accident can take place.The utility model is at import steam guiding tube 1, inlet header case 2, outlet steam guiding tube 8 and the outlet collection case 7 of existing boiler superheater reheater structure, from boiler width 4 several tube panels 3 in parallel, every tube panel 5 is formed as shown in Figure 1 by " U " shape, on this basis at all pipes of a slice tube panel 5 that is heated little or some tube panels 3, or the outer section of the stove of the import of part pipe, centre or outlet installs steam flow adapter 6 additional, compensate the inhomogeneities of caloric receptivity, make the tube wall temperature of all pipes be tending towards even.
Embodiment two: as shown in Figure 2, boiler width 4 several tube panels 3 in parallel, inlet header case 2 or outlet collection case 7 at the uneven tube panel that is heated are divided into several, and install steam flow adapter 6 additional at the import steam guiding tube 1 of several tube panels 3 that are heated little or outlet steam guiding tube, also can make the temperature of all pipes be tending towards effect of uniform.Dwindle in the middle of above-mentioned steam flow adapter 6 steam channels, be single-stage hole sheet pattern, as shown in Figure 3; There is secondary to dwindle in the middle of the steam channel, is twin-stage hole sheet pattern, as shown in Figure 4; Tapered reduction in the middle of the steam channel is the Venturi tube pattern, as shown in Figure 5; And one section straight tube that internal diameter is less, be the straight tube pattern, as shown in Figure 6 etc.
Claims (4)
1. the steam flow adapter that originally reduces the boiler hot deviation is a kind of import steam guiding tube (1), inlet header case (2), outlet steam guiding tube (8) and outlet collection case (7), from boiler width (4) several tube panels (3) in parallel, every tube panel (5) is formed for " U " shape reduces boiler superheater reheater thermal deviation device, it is characterized in that the outer section of stove of import, centre or the outlet of being heated of a slice tube panel (5) little one or some pipes installs steam flow adapter (6) additional.
2. according to claim 1, reduce the described boiler superheater reheater thermal deviation device that reduces of steam flow adapter of boiler hot deviation, it is characterized in that boiler width (4) several tube panels (3) in parallel, section installs steam flow adapter (6) additional outside the stove of the import of little a slice or all pipes of some tube panels (5) or part pipe of being heated, centre or outlet.
3. according to claim 1, reduce the described boiler superheater reheater thermal deviation device that reduces of steam flow adapter of boiler hot deviation, it is characterized in that boiler width (4) several tube panels (3) in parallel, inlet header case (2) or outlet collection case (7) at the uneven tube panel that is heated are divided into several, and install steam flow adapter (6) additional at the import steam guiding tube (1) or the outlet steam guiding tube of several tube panels (3) that are heated little.
4. according to claim 1, reduce the described boiler reheater superheater thermal deviation device that reduces of steam flow adapter of boiler hot deviation, it is characterized in that middle one-level of steam flow adapter (6) steam channel or secondary dwindle, be hole sheet pattern, or tapered dwindling in the middle of the steam channel, being the Venturi tube pattern, perhaps is one section pipe that internal diameter is little, is straight tube pattern etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042233 CN2851865Y (en) | 2005-06-07 | 2005-06-07 | Steam flow adapter capable of reducing boiler heat deviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042233 CN2851865Y (en) | 2005-06-07 | 2005-06-07 | Steam flow adapter capable of reducing boiler heat deviation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851865Y true CN2851865Y (en) | 2006-12-27 |
Family
ID=37585823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042233 Expired - Fee Related CN2851865Y (en) | 2005-06-07 | 2005-06-07 | Steam flow adapter capable of reducing boiler heat deviation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851865Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886805A (en) * | 2010-07-02 | 2010-11-17 | 上海望特能源科技有限公司 | Arrangement method of tower-type boiler high-temperature reheater container system |
| CN102506438A (en) * | 2011-11-06 | 2012-06-20 | 浙江国华浙能发电有限公司 | Variable-stroke soot blowing method for reducing reheat steam temperature deviation of fossil power plant |
| CN108087047A (en) * | 2017-12-28 | 2018-05-29 | 江苏金通灵流体机械科技股份有限公司 | Turbine LP rotors and its electricity-generating method |
| CN110454771A (en) * | 2019-09-16 | 2019-11-15 | 上海锅炉厂有限公司 | A kind of division pendant superheater preferred arrangement mode |
| CN112116493A (en) * | 2020-10-29 | 2020-12-22 | 广东电科院能源技术有限责任公司 | Flow adjusting method and system for superheater of coal-fired power plant |
| CN112513525A (en) * | 2018-11-21 | 2021-03-16 | 三菱动力株式会社 | Boiler device |
-
2005
- 2005-06-07 CN CN 200520042233 patent/CN2851865Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886805A (en) * | 2010-07-02 | 2010-11-17 | 上海望特能源科技有限公司 | Arrangement method of tower-type boiler high-temperature reheater container system |
| CN101886805B (en) * | 2010-07-02 | 2012-01-25 | 上海望特能源科技有限公司 | Arrangement method of tower-type boiler high-temperature reheater container system |
| CN102506438A (en) * | 2011-11-06 | 2012-06-20 | 浙江国华浙能发电有限公司 | Variable-stroke soot blowing method for reducing reheat steam temperature deviation of fossil power plant |
| CN108087047A (en) * | 2017-12-28 | 2018-05-29 | 江苏金通灵流体机械科技股份有限公司 | Turbine LP rotors and its electricity-generating method |
| CN112513525A (en) * | 2018-11-21 | 2021-03-16 | 三菱动力株式会社 | Boiler device |
| CN112513525B (en) * | 2018-11-21 | 2022-06-10 | 三菱重工业株式会社 | Boiler device |
| CN110454771A (en) * | 2019-09-16 | 2019-11-15 | 上海锅炉厂有限公司 | A kind of division pendant superheater preferred arrangement mode |
| CN112116493A (en) * | 2020-10-29 | 2020-12-22 | 广东电科院能源技术有限责任公司 | Flow adjusting method and system for superheater of coal-fired power plant |
| CN112116493B (en) * | 2020-10-29 | 2021-09-14 | 南方电网电力科技股份有限公司 | Flow adjusting method and system for superheater of coal-fired power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |