CN205690371U - A kind of device improving station boiler reheater outlet steam temperature - Google Patents
A kind of device improving station boiler reheater outlet steam temperature Download PDFInfo
- Publication number
- CN205690371U CN205690371U CN201620638270.XU CN201620638270U CN205690371U CN 205690371 U CN205690371 U CN 205690371U CN 201620638270 U CN201620638270 U CN 201620638270U CN 205690371 U CN205690371 U CN 205690371U
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- Prior art keywords
- pipe
- temperature
- boiler
- flue gas
- reheater
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 15
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a kind of device improving station boiler reheater outlet steam temperature, including boiler furnace and boiler horizontal gas pass, described boiler furnace is connected with boiler horizontal gas pass head end, described boiler horizontal gas pass tail end is connected with back-end ductwork, it is provided with low-temperature reheater in described back-end ductwork, low-temperature reheater entrance connects with reheated steam cold segment pipe, described reheated steam cold segment pipe is connected with boiler furnace by high-temperature flue gas connecting pipe, and described high-temperature flue gas connecting pipe is provided with valve.High-temperature flue gas at burner hearth is caused at reheated steam cold segment pipe by connecting pipe by this utility model, reheated steam cold segment pipe is heated in advance, high-temperature flue gas connecting pipe is provided with control valve, by high-temperature flue gas amount in adjustment valve opening change high-temperature flue gas connecting pipe, boiler reheater inlet steam temperature can be improved, and then improve reheater outlet steam temperature, reduce coal consumption, improve unit macroeconomic.
Description
Technical field
This utility model belongs to heat power plant boiler field, is specifically related to a kind of station boiler reheater that improves and exports vapour
The device of temperature.
Background technology
Station boiler due to exist design problem, change the reason such as coal, scrap build cause reheater outlet steam temperature reach
Less than design temperature, and all can not be solved, during individual power plants rated load by the conventional method such as firing optimization, reheater baffle plate
Lower 50 DEG C than design temperature, this has a strong impact on unit macroeconomic performance.Resolving ideas is to install reheater tube bank additional to strengthen at present
Caloric receptivity, or in burner hearth, add wall with refractory lining, refracto increase flue-gas temperature reinforcement heat exchange, the former invests big and long construction period, Hou Zherong
Easily cause superheater tube wall temperature overtemperature even booster.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of raising station boiler reheater
The device of outlet steam temperature, causes at reheated steam cold segment pipe by high-temperature flue gas at burner hearth by pipeline, to cold section of reheated steam
Pipeline heats in advance, improves reheater outlet steam temperature.
For achieving the above object, this utility model employing following technical proposals:
A kind of device improving station boiler reheater outlet steam temperature, including boiler furnace and boiler horizontal gas pass, described
Boiler furnace is connected with boiler horizontal gas pass head end, and described boiler horizontal gas pass tail end is connected with back-end ductwork, described afterbody cigarette
Being provided with low-temperature reheater in road, low-temperature reheater entrance connects with reheated steam cold segment pipe, described reheated steam cold segment pipe
Being connected with boiler furnace by high-temperature flue gas connecting pipe, described high-temperature flue gas connecting pipe is provided with valve.
Described reheated steam cold segment pipe includes the first pipeline and is placed on the second pipe of the first pipeline external, described first
Pipeline and second pipe are arranged concentrically.Flowing steam in first passage, circulate in second channel the high temperature attracted by boiler furnace
Flue gas, flue gas transfers heat to the steam in first passage in flowing, makes the vapor (steam) temperature in reheated steam cold segment pipe
Promote.
Described high-temperature flue gas connecting pipe connects with second pipe.
Described back-end ductwork bottom is connected with air preheater, and air preheater bottom is with air preheater exhaust pass even
Logical.
Described second pipe connects with air preheater exhaust pass also by flue after heat exchange.Flue gas after heat exchange
Air preheater exhaust pass can be drained into.
Preferably, described high-temperature flue gas connecting pipe is connected to the second pipe side near back-end ductwork, described heat exchange
Rear flue is connected to the second pipe side away from back-end ductwork.High-temperature flue gas can farthest with the first pipeline in
Steam carries out heat exchange, farthest to promote the temperature of steam.
Described reheated steam cold segment pipe is also connected with the outlet of steam turbine high-pressure cylinder.
The beneficial effects of the utility model are:
High-temperature flue gas at burner hearth is caused at reheated steam cold segment pipe by connecting pipe by this utility model, steams reheating
Vapour cold segment pipe heats in advance, is provided with control valve in high-temperature flue gas connecting pipe, changes high temperature cigarette by adjusting valve opening
High-temperature flue gas amount in gas connecting pipe, can improve boiler reheater inlet steam temperature, and then improve reheater outlet vapor temperature
Degree, reduces coal consumption, improves unit macroeconomic.This utility model apparatus structure is simple, easy to operate, and energy-saving effect shows
Write.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model device；
Fig. 2 is the structural representation of reheated steam cold segment pipe；
In figure, 1 is boiler furnace, and 2 is boiler horizontal gas pass, and 3 is back-end ductwork, and 4 is reheated steam cold segment pipe, and 5 are
High-temperature flue gas connecting pipe, 6 is valve, and 7 is flue after heat exchange, and 8 is low-temperature reheater, and 9 is air preheater, and 10 is the
Two pipelines, 11 is the first pipeline, and 12 is air preheater exhaust pass.
Detailed description of the invention
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of device improving station boiler reheater outlet steam temperature, including boiler furnace 1 and boiler water
Flat flue 2, boiler furnace 1 is connected with boiler horizontal gas pass 2 head end, and boiler horizontal gas pass 2 tail end is connected with back-end ductwork 3, tail
Being provided with low-temperature reheater 8 in portion's flue 3, low-temperature reheater 8 entrance connects with reheated steam cold segment pipe 4, cold section of reheated steam
Pipeline 4 is connected with boiler furnace 1 by high-temperature flue gas connecting pipe 5, and high-temperature flue gas connecting pipe 5 is provided with valve 6.High temperature cigarette
In gas connecting pipe 5, high-temperature flue gas can be directly from boiler furnace, it is possible to mixed by its elsewhere high-temperature flue gas.
As in figure 2 it is shown, reheated steam cold segment pipe 4 includes the first pipeline 11 and is placed on the second pipe outside the first pipeline 11
Road 10, the first pipeline 11 and second pipe 10 are arranged concentrically.Flowing steam in first passage 11, circulates by pot in second channel 10
The high-temperature flue gas that stove burner hearth attracts, flue gas transfers heat to the steam in first passage 11 in flowing, makes reheated steam cold
Vapor (steam) temperature in segment pipe promotes.
High-temperature flue gas connecting pipe 5 connects with second pipe 10.
Back-end ductwork 3 bottom is connected with air preheater 9, air preheater 9 bottom and air preheater exhaust pass 12
Connection.
Second pipe 10 connects with air preheater exhaust pass 12 also by flue after heat exchange 7.Cigarette after heat exchange
Gas can drain into air preheater exhaust pass 12.In second pipe 10 flue gas can drain into air preheater exhaust pass or below its
His flue.
High-temperature flue gas connecting pipe 5 is connected to the second pipe 10 side near back-end ductwork 3, flue 7 after heat exchange
It is connected to the second pipe 10 side away from back-end ductwork 3.High-temperature flue gas can farthest enter with the steam in the first pipeline
Row heat exchange, farthest to promote the temperature of steam.
Reheated steam cold segment pipe 4 is connected with the outlet of steam turbine high-pressure cylinder.
During use, when boiler reheater outlet steam temperature is less than design load, opening valve 6, high-temperature flue gas is through high-temperature flue gas
Connecting pipe 5 enters reheated steam cold segment pipe 4, carries out heat convection, by be adjusted into reheated steam cold segment pipe 4
Exhaust gas volumn controls the size that reheater temperature heats up in advance, typically can heat up 30～50 DEG C, steam in reheated steam cold segment pipe 4
Entering low-temperature reheater 8, make low-temperature reheater 8 entrance steam temperature improve, burner hearth internal reheater caloric receptivity change is little, then low temperature
Reheater 8 outlet temperature can be increased to design load, and unit macroeconomic improves.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not to pay various amendments or deformation that creative work can make still at protection model of the present utility model
Within enclosing.
Claims (7)
1. improve a device for station boiler reheater outlet steam temperature, it is characterized in that, including the horizontal cigarette of boiler furnace and boiler
Road, described boiler furnace is connected with boiler horizontal gas pass head end, and described boiler horizontal gas pass tail end is connected with back-end ductwork, described
Being provided with low-temperature reheater in back-end ductwork, low-temperature reheater entrance connects with reheated steam cold segment pipe, and described reheated steam is cold
Segment pipe is connected with boiler furnace by high-temperature flue gas connecting pipe, and described high-temperature flue gas connecting pipe is provided with valve.
2. device as claimed in claim 1, is characterized in that, described reheated steam cold segment pipe includes the first pipeline and is placed on the
The second pipe of one pipeline external, described first pipeline and second pipe are arranged concentrically.
3. device as claimed in claim 2, is characterized in that, described high-temperature flue gas connecting pipe connects with second pipe.
4. device as claimed in claim 2, is characterized in that, described back-end ductwork bottom is connected with air preheater, and air is pre-
Hot device bottom connects with air preheater exhaust pass.
5. device as claimed in claim 4, is characterized in that, described second pipe is pre-with air also by flue after heat exchange
Hot device exhaust pass connects.
6. device as claimed in claim 5, is characterized in that, described high-temperature flue gas connecting pipe is connected to second pipe near tail
The side of portion's flue, after described heat exchange, flue is connected to the second pipe side away from back-end ductwork.
7. device as claimed in claim 1, is characterized in that, described reheated steam cold segment pipe also with the going out of steam turbine high-pressure cylinder
Mouth connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620638270.XU CN205690371U (en) | 2016-06-23 | 2016-06-23 | A kind of device improving station boiler reheater outlet steam temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620638270.XU CN205690371U (en) | 2016-06-23 | 2016-06-23 | A kind of device improving station boiler reheater outlet steam temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205690371U true CN205690371U (en) | 2016-11-16 |
Family
ID=57425930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620638270.XU Active CN205690371U (en) | 2016-06-23 | 2016-06-23 | A kind of device improving station boiler reheater outlet steam temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205690371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751590A (en) * | 2019-02-28 | 2019-05-14 | 西安交通大学 | Double reheat boiler and attemperation of steam method |
-
2016
- 2016-06-23 CN CN201620638270.XU patent/CN205690371U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751590A (en) * | 2019-02-28 | 2019-05-14 | 西安交通大学 | Double reheat boiler and attemperation of steam method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |