CN203744211U - Steam boiler with forced circulation coal economizer screen - Google Patents
Steam boiler with forced circulation coal economizer screen Download PDFInfo
- Publication number
- CN203744211U CN203744211U CN201320882674.XU CN201320882674U CN203744211U CN 203744211 U CN203744211 U CN 203744211U CN 201320882674 U CN201320882674 U CN 201320882674U CN 203744211 U CN203744211 U CN 203744211U
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- Prior art keywords
- boiler
- communicated
- screen
- steam
- heat
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Links
- 239000003245 coal Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 2
- 239000000779 smoke Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 9
- 230000003134 recirculating effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a steam boiler with a forced circulation coal economizer screen. The steam boiler comprises a boiler body, wherein a lateral wall and a top wall of the boiler body are respectively formed by inner walls and outer walls, the inner walls are membrane walls, and the outer walls are insulating layers. A support is arranged outside the boiler body, a steam drum positioned above the boiler body is arranged on the support, and the cavity of the steam drum is communicated with the cavity of the membrane walls and communicated with an overheater through a steam output pipe. The steam boiler further comprises a coal economizer capable of utilizing smoke exhausted by the boiler to heat water. The steam boiler is structurally characterized in that the coal economizer screen is arranged on the support in a hanging mode, the upper end of the coal economizer screen penetrates through the top wall of the boiler body and communicated with the steam drum, the middle section of the coal economizer screen is positioned in the cavity of the boiler body, and the lower end of the coal economizer screen penetrates through the lateral wall of the boiler body and communicated with a water outlet of the coal economizer through a water pump. By means of the steam boiler, volume expansion of the boiler is achieved by arranging the coal economizer screen in a hearth without additionally enlarging volume of the boiler. Furthermore, the steam boiler is simple in structure and convenient to implement. Water comes from the coal economizer, forced circulation is achieved, and heat exchange effect is good.
Description
Technical field
The utility model relates to a kind of steam boiler that has forced circulation to economize coal screen.
Background technology
Existing recirculating fluidized bed steam boiler, comprise body of heater, sidewall of the furnace body and roof are all made up of madial wall and lateral wall, madial wall is fin panel casing, and lateral wall is heat-insulation layer, body of heater peripheral hardware support, is equipped with on support and is positioned at the drum that body of heater top and its inner chamber are communicated with fin panel casing inner chamber, drum is by steam output pipe and superheater, and this boiler also comprises the economizer that utilizes the flue gas of boiler discharge water to be heated and be communicated with drum.Its method of operation of the steam boiler of said structure is as follows: in economizer, hot water enters in drum and enters as the i.e. conduct of boiler water supply the water that is heated into steam in water-cooling wall by boiler, water in water-cooling wall is heated enters superheater after being vaporized into steam, from superheater output for acting equipment.Once its capacity is just certain after boiler sizing, how on the constant basis of boiler volume, realize the problem of boiler increase-volume, be that the utility model is wanted the technical problem solving.
Summary of the invention
The technical problems to be solved in the utility model is that a kind of steam boiler that has forced circulation to economize coal screen that can realize boiler increase-volume under a kind of situation not increasing boiler volume is provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of forced circulation that has with following structure to economize the steam boiler of coal screen, comprise body of heater, sidewall of the furnace body and roof are all made up of madial wall and lateral wall, madial wall is fin panel casing, lateral wall is heat-insulation layer, body of heater peripheral hardware support, on support, be equipped with and be positioned at the drum that body of heater top and its inner chamber are communicated with fin panel casing inner chamber, drum is communicated with superheater by steam output pipe, this boiler also comprises the economizer that utilizes the flue gas of boiler discharge to heat water, its design feature is that on described support, being lifted with upper end passes body of heater roof, stage casing is positioned at body of heater inner chamber, bottom passes province's coal screen of sidewall of the furnace body, the upper end of economizing coal screen is communicated with drum, the bottom of economizing coal screen is communicated with the delivery port of described economizer by water pump.
Described province coal screen comprises the upper collecting chamber that is positioned at body of heater roof top and be communicated with drum and the lower header that is positioned at sidewall of the furnace body outside and is communicated with the delivery port of described economizer; The many heat-exchange tubes that upper collecting chamber and lower header arrange by compartment are connected, and between adjacent two heat-exchange tubes, are provided with and these two connecting plates that heat-exchange tube is all connected.
Described heat-exchange tube is L shape, and perpendicular section of L shape heat-exchange tube is connected with upper collecting chamber, and the crosspiece of L shape heat-exchange tube is connected with lower header.
The utility model has the advantage of: 1, need not increase the volume of making boiler furnace, only in burner hearth, set up forced circulation economizer screen, the long-pending increase of furnace heating surface can be reached and increase the object that expands boiler capacity, simple structure, realization facilitates 2, the feedwater of forced circulation economizer screen adopts forced circulation, without down-comer and water-cooling wall upper collecting chamber etc. are transformed, do not change the cross section of water-cooling system Natural Circulation, avoid the impact on water-cooling system Natural Circulation.Improve security.3. water circulation, from economizer, belongs to forced circulation, and heat transfer effect improves greatly.
Brief description of the drawings
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the province's coal screen shown in Fig. 1;
Fig. 3 is the cutaway view along A-A line in Fig. 2.
Detailed description of the invention
The utility model is the improvement of making on the basis of existing recirculating fluidized bed steam boiler, does not relate to body of heater lower bottom part owing to improving, and therefore in Fig. 1, has dispensed body of heater lower bottom part.With reference to Fig. 1, the utility model comprises body of heater, sidewall of the furnace body and roof are all made up of madial wall and lateral wall, madial wall is fin panel casing 1, and lateral wall is heat-insulation layer 2, body of heater peripheral hardware support 3, on support 3, be equipped with and be positioned at the drum 4 that body of heater top and its inner chamber are communicated with fin panel casing 1 inner chamber, drum 4 is communicated with superheater 5 by steam output pipe 10, fin panel casing 1 is communicated with drum 4 by water-cooling wall header 11, this boiler also comprises the economizer 6 that utilizes the flue gas of boiler discharge to heat water, said structure feature with existing recirculating fluidized bed steam boiler for all identical.Its difference is to be lifted with on described support 3 upper end and passes body of heater roof, stage casing and be positioned at body of heater inner chamber, bottom and pass province's coal screen 7 of sidewall of the furnace body, the upper end of economizing coal screen 7 is communicated with drum 4, and the bottom of economizing coal screen 7 is communicated with the delivery port of described economizer 6 by feed pipe 9 and water pump 8.
With reference to Fig. 2 and Fig. 3, described province coal screen 7 comprises the upper collecting chamber 71 that is positioned at body of heater roof top and the lower header 72 that is positioned at sidewall of the furnace body outside; On upper collecting chamber 71, establish the upper connected entrance 75 for being communicated with drum 4, on lower header 72, establish the lower connected entrance 76 for being communicated with the delivery port of described economizer 6; The many heat-exchange tubes 73 that upper collecting chamber 71 and lower header 72 arrange by compartment are connected, and are provided with the connecting plate 74 being all connected with these two heat-exchange tubes 73 between adjacent two heat-exchange tubes 73; Described heat-exchange tube 73 is L shape, and perpendicular section of L shape heat-exchange tube 73 is connected with upper collecting chamber 71, and the crosspiece of L shape heat-exchange tube 73 is connected with lower header 72.
Occupation mode of the present utility model is as follows: the high-temperature flue gas that economizer 6 utilizes boiler to discharge heats the cold water entering in it, become after hot water and to be sent into by water pump Final 8 system that to enter heat-exchange tube 73 after lower header 72 interior by after high-temperature heating in body of heater, a part becomes after a steam part becomes the hot water that temperature is very high to be understood in inflow upper collecting chamber 71, enter again drum, steam enters superheater 5 by the steam output pipe at drum 4 tops, enter the hot water of drum for water-cooling wall provides recirculated water, after the water vapor that water-cooling wall absorbs heat in it, be pooled to drum 4 tops, also enter superheater 5 by steam output pipe, drum bottom hot water as a supplement water source flow in water-cooling wall.
Claims (3)
1. a steam boiler that has forced circulation to economize coal screen, comprise body of heater, sidewall of the furnace body and roof are all made up of madial wall and lateral wall, madial wall is fin panel casing (1), and lateral wall is heat-insulation layer (2), body of heater peripheral hardware support (3), on support (3), be equipped with and be positioned at the drum (4) that body of heater top and its inner chamber are communicated with fin panel casing (1) inner chamber, drum (4) is communicated with superheater (5) by steam output pipe, this boiler also comprises the economizer (6) that utilizes the flue gas of boiler discharge to heat water, it is characterized in that on described support (3), being lifted with upper end passes body of heater roof, stage casing is positioned at body of heater inner chamber, bottom passes province's coal screen (7) of sidewall of the furnace body, the upper end of economizing coal screen (7) is communicated with drum (4), the bottom of economizing coal screen (7) is communicated with the delivery port of described economizer (6) by water pump (8).
2. the steam boiler that has forced circulation to economize coal screen as claimed in claim 1, is characterized in that described province coal screen (7) comprises the lower header (72) that is positioned at body of heater roof top and the upper collecting chamber (71) being communicated with drum (4) and is positioned at sidewall of the furnace body outside and is communicated with the delivery port of described economizer (6); The many heat-exchange tubes (73) that upper collecting chamber (71) and lower header (72) arrange by compartment are connected, and are provided with the connecting plate (74) being all connected with these two heat-exchange tubes (73) between adjacent two heat-exchange tubes (73).
3. the steam boiler that has forced circulation to economize coal screen as claimed in claim 2, it is characterized in that described heat-exchange tube (73) is L shape, perpendicular section of L shape heat-exchange tube (73) is connected with upper collecting chamber (71), and the crosspiece of L shape heat-exchange tube (73) is connected with lower header (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320882674.XU CN203744211U (en) | 2013-12-31 | 2013-12-31 | Steam boiler with forced circulation coal economizer screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320882674.XU CN203744211U (en) | 2013-12-31 | 2013-12-31 | Steam boiler with forced circulation coal economizer screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203744211U true CN203744211U (en) | 2014-07-30 |
Family
ID=51344005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320882674.XU Expired - Lifetime CN203744211U (en) | 2013-12-31 | 2013-12-31 | Steam boiler with forced circulation coal economizer screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203744211U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327840A (en) * | 2017-08-16 | 2017-11-07 | 哈尔滨红光锅炉总厂有限责任公司 | The Water flow-path system of low emission type CFBB |
| CN112325309A (en) * | 2020-11-25 | 2021-02-05 | 中冶焦耐(大连)工程技术有限公司 | A heat exchange tube panel for waste incineration grate furnace |
-
2013
- 2013-12-31 CN CN201320882674.XU patent/CN203744211U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327840A (en) * | 2017-08-16 | 2017-11-07 | 哈尔滨红光锅炉总厂有限责任公司 | The Water flow-path system of low emission type CFBB |
| CN107327840B (en) * | 2017-08-16 | 2023-07-14 | 哈尔滨红光锅炉总厂有限责任公司 | Water flow system of low-emission circulating fluidized bed boiler |
| CN112325309A (en) * | 2020-11-25 | 2021-02-05 | 中冶焦耐(大连)工程技术有限公司 | A heat exchange tube panel for waste incineration grate furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190220 Address after: 261500 Weifang City, Shandong Province, Gaomi City Xia Zhuang Industrial Park Patentee after: SHANDONG HENGTAO ENERGY-SAVING & ENVIRONMENTAL PROTECTION Co.,Ltd. Address before: 261500 middle section of Yian Avenue, Gaomi City, Weifang City, Shandong Province Patentee before: SHANDONG HENG TAO ENERGY SAVING TECHNOLOGY SERVICE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |