CN2480764Y - Large volume (great than 14 MW) natural circulation water-heating boiler - Google Patents
Large volume (great than 14 MW) natural circulation water-heating boiler Download PDFInfo
- Publication number
- CN2480764Y CN2480764Y CN 99258950 CN99258950U CN2480764Y CN 2480764 Y CN2480764 Y CN 2480764Y CN 99258950 CN99258950 CN 99258950 CN 99258950 U CN99258950 U CN 99258950U CN 2480764 Y CN2480764 Y CN 2480764Y
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- water
- boiler
- natural circulation
- drum
- upper drum
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Abstract
The utility model relates to a (>=14MW) natural circulation water-heating boiler. The radiation heating surface and the convection heating surface of the utility model both adopt the natural circulation method. A leading-in water pipe and a leading-out water pipe of the utility model are directly connected with an upper drum, and the circulating water of heat supply is led into the upper drum and is sent to a descending (pipe) zone by a water distribution pipe. The hot water of the boiler is led out by a water collector in the drum. No baffle plate is added in an upper drum. The water flow circuit of the radiation heating surface (water screen) is composed of the upper drum a descending pipe, an upper header, a lower header and a water screen tube. The water-heating boiler comprises the upper drum (1), a convection bank (2), the descending pipe (3), the water screen tube (4) and a lower drum (5).
Description
Be applicable to the hot-water boiler in large-scale centralized heating boiler room
At present, the endless form that is used for its pot of hot-water boiler water that heating uses mainly contains three kinds: the combined-circulation that Natural Circulation, forced circulation and Natural Circulation and forced circulation are formed.
The hot-water boiler of forced circulation, the circulation of its pot water be by the water circulating pump of heating system or on closed circuit serial connection one special water circulating pump control the circulating of water in the pot.As: though pipe-support type boiler of being made up of big or small caliber or corner tube boiler and is made up of upper and lower drum and water-cooling wall and convection bank are provided with dividing plate in the drum, form an end and enter, the water circulation system that the other end is exported.This kind boiler increases the boiler water system resistance, has increased heating system recirculated water pump lift, the corresponding power consumption that increased, and, when having a power failure, easily form subcooled boiling, influence the security of boiler.
The combined-circulation hot-water boiler is made up of forced circulation and Natural Circulation.The more employing of hot-water boiler for 〉=14MW.The water circulation of radiation heating-surface is formed Natural Circulation by down-comer, lower collecting box, water-cooling wall, upper header, aqueduct etc.The pressure water circulation system that convection heating surface then adopts tube bank (as coiled pipe etc.) to form, the structure that perhaps adopts upper and lower drum, convection bank to form, but in drum, add dividing plate and spray priming device, form an end and enter, the forced circulation system that the other end is drawn.
Above-mentioned two kinds of circulation forms, in case have a power failure suddenly, the boiler circulation will be all or local the stagnation, forms partial vaporization, and the security of boiler is on the hazard, the boiler room need be equipped with dual power supply or technical measures such as power autonomous for this reason.
For big capacity hot-water boiler, combustion chamber and fuel bed amount of stored heat are big, and what have a power failure and cause suddenly is dangerous even more serious.
The purpose of this utility model provides a kind of 〉=14MW natural circulation boiler, its radiation heating-surface and convection heating surface all adopt natural circulation mode.Its radiation heating-surface links to each other with upper and lower drum entirely with convection heating surface and forms Natural Circulation, even have a power failure suddenly, the water circulation can not stagnated yet.
Realize that concrete scheme of the present utility model is:
Heat supply network recirculated water is introduced upper drum, causes water circulation decline district by sparge pipe, and boiler hot-water is drawn by collection case in the upper drum, and upper drum does not add dividing plate, makes the radiation heating-surface of boiler and convection heating surface form natural cycle system.
The water-flow circuit of radiation heating-surface (water-cooling wall) is made up of upper drum, down-comer, last next part case, tedge.Down-comer is arranged in outside the furnace wall, is not heated, and the upper end links to each other with drum, and the lower end is connected with the next part case.The water screen tube that is arranged in the burner hearth absorbs flame radiation heat, and the stove water in the heating tube rises current, thereby reaches the cyclic process of Natural Circulation.
The closed circuit of convection heating surface is the same with the Natural Circulation steam boiler, is made up of upper and lower drum and convection bank.The weak tube bank of being heated is the district that descends, and the strong tube bank of being heated is the rising area.When forming flue gas flow artificial increase the decline district that is not heated, constituted the simple cycle loop.
Because the closed circuit of the main heating surface of this boiler is Natural Circulation, be that the power electricity drives, therefore in servicely can not be subjected to the threat that has a power failure suddenly, avoided necessary dual power supply in large-scale centralized heating boiler room or specification requirement such as power autonomous.
Accompanying drawing [1] is the front view of the utility model hot-water boiler,
Comprising: (1)-upper drum, (2)-convection bank, (3)-down-comer, (4)-water screen tube, (5)-lower drum
Accompanying drawing [2] is the vertical view of the utility model hot-water boiler
Claims (3)
1, a kind of heating is with (〉=14MW) hot water boiler with natural circulation, heat supply network recirculated water is introduced upper drum, cause water circulation decline district by sparge pipe, boiler hot-water is drawn by concentrating in the upper drum, and it is characterized in that: boiler radiation heating-surface and convection heating surface form natural cycle system; The water-flow circuit of radiation heating-surface is made up of upper drum, down-comer, tedge; The closed circuit of convection heating surface is made up of upper and lower drum and convection bank.
2,1 described (〉=14MW) hot water boiler with natural circulation, it is characterized in that: upper drum does not add dividing plate, forms Natural Circulation in it yet according to right.
3, according to right 1 described (〉=14MW) hot water boiler with natural circulation is characterized in that: when forming the flue gas flow of convection bank, artificial increase the district that descends that is not heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258950 CN2480764Y (en) | 1999-12-29 | 1999-12-29 | Large volume (great than 14 MW) natural circulation water-heating boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258950 CN2480764Y (en) | 1999-12-29 | 1999-12-29 | Large volume (great than 14 MW) natural circulation water-heating boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2480764Y true CN2480764Y (en) | 2002-03-06 |
Family
ID=34041394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99258950 Expired - Fee Related CN2480764Y (en) | 1999-12-29 | 1999-12-29 | Large volume (great than 14 MW) natural circulation water-heating boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2480764Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305465A (en) * | 2011-09-22 | 2012-01-04 | 哈尔滨工业大学 | Hot water boiler with inclined reciprocating grate and film-type wall |
| CN103673283A (en) * | 2012-09-26 | 2014-03-26 | 纪志丹 | Jet type common downcomer water boiler |
| CN104613639A (en) * | 2014-12-24 | 2015-05-13 | 山西蓝天环保设备有限公司 | Hot water industrial boiler |
| CN105318306A (en) * | 2014-08-04 | 2016-02-10 | 哈尔滨新东环保设备安装工程有限公司 | Two-drum settling chamber spraying denitration corner-tube boiler |
-
1999
- 1999-12-29 CN CN 99258950 patent/CN2480764Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305465A (en) * | 2011-09-22 | 2012-01-04 | 哈尔滨工业大学 | Hot water boiler with inclined reciprocating grate and film-type wall |
| CN103673283A (en) * | 2012-09-26 | 2014-03-26 | 纪志丹 | Jet type common downcomer water boiler |
| CN105318306A (en) * | 2014-08-04 | 2016-02-10 | 哈尔滨新东环保设备安装工程有限公司 | Two-drum settling chamber spraying denitration corner-tube boiler |
| CN105318306B (en) * | 2014-08-04 | 2017-10-03 | 哈尔滨四方锅炉有限公司 | A kind of pair of drum expansion chamber sprays denitration corner tube boiler |
| CN104613639A (en) * | 2014-12-24 | 2015-05-13 | 山西蓝天环保设备有限公司 | Hot water industrial boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Guifeng Document name: Notification of Termination of Patent Right |
|
| 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 |