CN203628627U - Secondary reheating boiler with wall type reheater - Google Patents
Secondary reheating boiler with wall type reheater Download PDFInfo
- Publication number
- CN203628627U CN203628627U CN201320846879.2U CN201320846879U CN203628627U CN 203628627 U CN203628627 U CN 203628627U CN 201320846879 U CN201320846879 U CN 201320846879U CN 203628627 U CN203628627 U CN 203628627U
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- Prior art keywords
- boiler
- secondary reheating
- reheater
- wall
- temperature
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- Expired - Lifetime
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- 238000003303 reheating Methods 0.000 title abstract 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000011295 pitch Substances 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model discloses a secondary reheating boiler with a wall type reheater. An existing large-capacity secondary reheating boiler is provided with two reheater systems, and three controlled high-temperature heating surfaces in an existing arrangement mode have the defects that adjustment lag exists, the adjustment range is small, the load adjustment range is limited, and the temperature adjustment mode and heating surface heat absorption coupling difficulty is large. The secondary reheating boiler comprises a secondary reheating boiler body. A middle header (2) is arranged in the middle of a hearth (1) of the body. A wall type reheater tube panel (3) is distributed on the water cooling wall, above the middle header, of the boiler and composed of a set of light tubes (4), and the light tubes are densely ranked on the surface of the water cooling wall at equal pitches. The secondary reheating boiler is used for adjustment of reheating steam temperature and heat distribution.
Description
technical field:
the utility model relates to a kind of double reheat boiler with wall formula reheater.
background technology:
at present large capacity secondary reheat boiler has two cover reheater systems.Three controlled high-temperature surfaces, there is control lag by current arrangement, the amplitude of accommodation is less, adjusting load range is limited, the deficiencies such as method of temperature control and heating surface endothermic character coupling difficulty are large, three high-temperature surface outlet temperatures of boiler meet or exceed 600 ℃: conventional method of temperature control afterbody high-temperature surface heat transfer temperature difference reduces, its low-load performance certainly will reduce, and more superior, the economic temperature adjustment measure of performance more of therefore must seeking reaches on the basis that does not increase power plant's operation coal consumption and realizes the effective adjusting to reheat steam temperature.
utility model content:
the purpose of this utility model is to provide a kind of double reheat boiler with wall formula reheater.
above-mentioned object realizes by following technical scheme:
a kind of double reheat boiler with wall formula reheater, its composition comprises: double reheat boiler body, burner hearth middle part at described body has intermediate header, on the boiler water wall above described intermediate header, be furnished with wall formula reheater tube panel, described wall formula reheater tube panel is made up of one group of light pipe, and described light pipe forms along water-cooling wall surface solid matter with identical pitch.
beneficial effect:
1. the utility model is applied to double reheat unit or reheat steam temperature is regulated to the boiler that has specific (special) requirements, can increase economy and the flexibility of unit operation.Can effectively guarantee that double reheat boiler meets the requirement of nominal steam temperature under each load.
2. the utility model has solved adjusting and the irrational difficult problem of heat distribution of double reheat Boiler Reheated-steam Temperature, realizes adjusting and coupling to different secondary reheat boiler reheat steam temperature.
3. double reheat boiler conventional design is under sub-load, be positioned at the high-temperature surface in flue gas flow downstream and the temperature difference of flue gas and just become very little, be difficult to only depend on the different transfer of heat of flue gas to meet the requirement of nominal steam temperature, the utility model divides on boiler water wall intermediate header top arranges radiation reheater heating surface, it is wall formula reheater, improve reheater outlet steam temperature by the high radiant heat of burner hearth, guarantee that high-temperature surface has certain heat transfer temperature difference under different load; Solving high-low pressure reheater low-temperature zone will have the problem of certain heat transfer temperature and pressure.Realize adjusting and coupling to different secondary reheat boiler reheat steam temperature.
accompanying drawing explanation:
accompanying drawing 1 is the assembling schematic diagram that wall formula reheater tube panel of the present utility model is arranged on burner hearth place.
accompanying drawing 2 is structural representations of wall formula reheater tube panel of the present utility model.
accompanying drawing 3 is side views of accompanying drawing 2.
the specific embodiment:
embodiment 1:
a kind of double reheat boiler with wall formula reheater, its composition comprises: double reheat boiler body, burner hearth 1 middle part at described body has intermediate header 2, on the boiler water wall above described intermediate header, be furnished with wall formula reheater tube panel 3, described wall formula reheater tube panel is made up of one group of light pipe 4, and described light pipe forms along water-cooling wall surface solid matter with identical pitch.
Claims (1)
1. the double reheat boiler with wall formula reheater, its composition comprises: double reheat boiler body, it is characterized in that: the burner hearth middle part at described body has intermediate header, on the boiler water wall above described intermediate header, be furnished with wall formula reheater tube panel, described wall formula reheater tube panel is made up of one group of light pipe, and described light pipe forms along water-cooling wall surface solid matter with identical pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320846879.2U CN203628627U (en) | 2013-12-20 | 2013-12-20 | Secondary reheating boiler with wall type reheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320846879.2U CN203628627U (en) | 2013-12-20 | 2013-12-20 | Secondary reheating boiler with wall type reheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203628627U true CN203628627U (en) | 2014-06-04 |
Family
ID=50815101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320846879.2U Expired - Lifetime CN203628627U (en) | 2013-12-20 | 2013-12-20 | Secondary reheating boiler with wall type reheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203628627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676573B (en) * | 2015-03-09 | 2018-12-04 | 章礼道 | A kind of 720 DEG C of efficient ultra supercritical double reheat station boilers |
| CN112513525A (en) * | 2018-11-21 | 2021-03-16 | 三菱动力株式会社 | Boiler device |
-
2013
- 2013-12-20 CN CN201320846879.2U patent/CN203628627U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676573B (en) * | 2015-03-09 | 2018-12-04 | 章礼道 | A kind of 720 DEG C of efficient ultra supercritical double reheat station boilers |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |