CN104074789A - Novel energy saving method for induced draught fan - Google Patents
Novel energy saving method for induced draught fan Download PDFInfo
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- CN104074789A CN104074789A CN201410317344.5A CN201410317344A CN104074789A CN 104074789 A CN104074789 A CN 104074789A CN 201410317344 A CN201410317344 A CN 201410317344A CN 104074789 A CN104074789 A CN 104074789A
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- induced draught
- draught fan
- flue
- energy saving
- fan
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Abstract
The invention relates to a novel energy saving method for an induced draught fan. The novel energy saving method for the induced draught fan comprises steps that (1) when a generator set is in a high load state, baffle plates of a B induced draught fan which is in power frequency operation are operated in high speed in a fully opened mode and an A induced draught fan which is in variable frequency operation is adjusted to maintain wind pressure values of a flue channel and a furnace chamber; (2) when the generator set is in a low load operation state, the baffle plates are operated in a fully open mode when the B induced draught fan is in a power frequency low speed state and the A induced draught fan is adjusted to control everywhere wind pressure values of the furnace chamber; (3) under all conditions, communication flue channels which are used for balancing flows are arranged before inlets of the induced draught fans and the flows of the two flue channels are balanced due to opening of a fan communication door on the communication flue channel to enable the generator set to normally operate. The novel energy saving method for the induced draught fan is energy saving and reduces investment due to the mode that one induced draught fan is in power frequency operation and the other is in variable frequency operation.
Description
Technical field
The invention belongs to engineering measuring technology field, especially a kind of induced draught fan energy saving in running new method.
Background technique
The existing power station induced draught fan method of operation mainly comprises two kinds, and one is two induced draught fan power frequency operations, regulate the size of air quantity, but this kind of method of operation restriction loss is larger by adjusting induced draught fan baffle plate, energy-conservation poor.Another kind is that two Fans all change converting operation into, although this mode is energy-conservation better, investment is large, and the cost-recovering time limit is longer.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and propose a kind of induced draught fan energy saving in running new method.
The present invention solves its technical problem and takes following technological scheme to realize:
A kind of induced draught fan energy saving in running new method, comprises that step is as follows:
(1) when the state lower time of generator set in high load, as the B induced draught fan baffle plate standard-sized sheet high speed operation of power frequency operation, do not participate in regulating, the rotating speed of the A induced draught fan by regulating converting operation maintains flue and burner hearth wind pressure value everywhere;
(2) when unit is in underrun state lower time, B induced draught fan is in the operation of power frequency lower-speed state lower pedal standard-sized sheet, and due to blower fan reductions of exerting oneself, B induced draught fan is in the operation of bottom gear lower pedal standard-sized sheet, by adjustment A induced draught fan control burner hearth wind pressure value everywhere;
(3) under above-mentioned two kinds and other all situations, the contact flue of balanced flow is set before two induced draught fan entrances, in the time that both sides flow deviation is larger, get in touch with blower fan communicating door on flue and come the flow of balance two flues by unlatching, unit is normally moved.
And the diameter of described contact flue is 0.85 times of two induced draught fan flue diameters.
Advantage of the present invention and good effect are:
The present invention develops a kind of Novel induced draft fan operation method, and the method adopts the mode of another converting operation of power frequency operation, and the method is not only energy-conservation but also reduced investment.
Brief description of the drawings
Fig. 1 is the structural representation of the inventive method system for use in carrying.
Embodiment
Below in conjunction with accompanying drawing, the invention process is further described, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of induced draught fan energy saving in running new method, as shown in Figure 1, the applied system of the method comprises two flues that are communicated with burner hearth, on a flue, serial connection is provided with A induced draught fan entrance air door 3 and A induced draught fan 1, on another flue, serial connection is provided with B induced draught fan entrance air door 4 and B induced draught fan 2, is connected with the contact flue that blower fan communicating door 5 has been installed, wherein between two flues of described two entrance air door front ends, described A induced draught fan is converting operation, and B induced draught fan is power frequency operation.
The step that the method comprises is as follows:
(1) when the state lower time of generator set in high load, as the B induced draught fan baffle plate standard-sized sheet high speed operation of power frequency operation, do not participate in regulating, maintain flue and burner hearth wind pressure value everywhere by the rotating speed of A induced draught fan that regulates converting operation, so just reduced the restriction loss under B induced draught fan power frequency operation state;
(2) when unit is in underrun state lower time, B induced draught fan moves at power frequency lower-speed state lower pedal standard-sized sheet, A induced draught fan is converting operation state, due to the blower fan reduction of exerting oneself, B induced draught fan moves at bottom gear, but baffle plate standard-sized sheet does not have restriction loss, can control equally burner hearth wind pressure value everywhere by adjusting A induced draught fan;
(3) under above-mentioned two kinds and other all situations, the blower fan of two parallel runnings Operational Limits with should be consistent in mode, otherwise phenomenon can tack, cause the airflow pressure of both sides flue to have larger deviation, affect furnace outlet gas temperature and distribute, but this patent is in order to eliminate this imagination, the contact flue of balanced flow is set before two induced draught fan entrances, in the time that both sides flow deviation is larger, carry out the flow of balance two flues by opening blower fan communicating door, unit is normally moved.
In specific embodiment of the invention, A induced draught fan flue is identical with B induced draught fan flue diameter, for reaching the effect of best balance two flue flows, by repetition test, the diameter of contact flue be left and right two flues 0.8-0.9 doubly, its optimum value is 0.85 times.
Claims (2)
1. an induced draught fan energy saving in running new method, is characterized in that comprising that step is as follows:
(1) when the state lower time of generator set in high load, as the B induced draught fan baffle plate standard-sized sheet high speed operation of power frequency operation, do not participate in regulating, the rotating speed of the A induced draught fan by regulating converting operation maintains flue and burner hearth wind pressure value everywhere;
(2) when unit is in underrun state lower time, B induced draught fan is in the operation of power frequency lower-speed state lower pedal standard-sized sheet, and due to blower fan reductions of exerting oneself, B induced draught fan is in the operation of bottom gear lower pedal standard-sized sheet, by adjustment A induced draught fan control burner hearth wind pressure value everywhere;
(3) under above-mentioned two kinds and other all situations, the contact flue of balanced flow is set before two induced draught fan entrances, in the time that both sides flow deviation is larger, get in touch with blower fan communicating door on flue and come the flow of balance two flues by unlatching, unit is normally moved.
2. induced draught fan energy saving in running new method according to claim 1, is characterized in that, the diameter of described contact flue is 0.85 times of two induced draught fan flue diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317344.5A CN104074789A (en) | 2014-07-04 | 2014-07-04 | Novel energy saving method for induced draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317344.5A CN104074789A (en) | 2014-07-04 | 2014-07-04 | Novel energy saving method for induced draught fan |
Publications (1)
| Publication Number | Publication Date |
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| CN104074789A true CN104074789A (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410317344.5A Pending CN104074789A (en) | 2014-07-04 | 2014-07-04 | Novel energy saving method for induced draught fan |
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| CN (1) | CN104074789A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895820A (en) * | 2015-07-02 | 2015-09-09 | 东方日立(成都)电控设备有限公司 | Energy-saving optimization control method of moving-blade-adjustable axial flow fan variable-frequency energy-saving system |
| CN105114960A (en) * | 2015-07-17 | 2015-12-02 | 上海康恒环境股份有限公司 | Hearth pressure control method for garbage incinerator |
| CN110530163A (en) * | 2019-09-03 | 2019-12-03 | 中国科学院过程工程研究所 | A kind of sintering flue gas circulatory system and sintering flue gas round-robin method realized twin flue and take gas |
| CN112228893A (en) * | 2020-10-23 | 2021-01-15 | 大唐湘潭发电有限责任公司 | Air volume adjusting device and method for draught fan of large power station boiler |
| CN114165466A (en) * | 2020-09-11 | 2022-03-11 | 上海申能电力科技有限公司 | Method for recovering stalled one fan in double-row parallel axial flow primary fan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610082A (en) * | 1979-06-29 | 1981-02-02 | Kawasaki Steel Corp | Starting method of ac electric motor |
| JPS61241499A (en) * | 1985-04-17 | 1986-10-27 | Hitachi Ltd | Variable speed control device for blower |
-
2014
- 2014-07-04 CN CN201410317344.5A patent/CN104074789A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610082A (en) * | 1979-06-29 | 1981-02-02 | Kawasaki Steel Corp | Starting method of ac electric motor |
| JPS61241499A (en) * | 1985-04-17 | 1986-10-27 | Hitachi Ltd | Variable speed control device for blower |
Non-Patent Citations (3)
| Title |
|---|
| 唐修波: "火力发电厂锅炉风机变频器改造及其自动化控制设计", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, 15 March 2012 (2012-03-15) * |
| 梁燮荣等: "300MW机组锅炉烟风系统风门设置条件的调研", 《山东电力高等专科学校学报》, vol. 2, no. 4, 30 April 1999 (1999-04-30) * |
| 蒲万里等: "1000MW火电机组汽动引风机启动并联运行方式探讨", 《风机技术》, no. 3, 30 April 2014 (2014-04-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895820A (en) * | 2015-07-02 | 2015-09-09 | 东方日立(成都)电控设备有限公司 | Energy-saving optimization control method of moving-blade-adjustable axial flow fan variable-frequency energy-saving system |
| CN105114960A (en) * | 2015-07-17 | 2015-12-02 | 上海康恒环境股份有限公司 | Hearth pressure control method for garbage incinerator |
| CN110530163A (en) * | 2019-09-03 | 2019-12-03 | 中国科学院过程工程研究所 | A kind of sintering flue gas circulatory system and sintering flue gas round-robin method realized twin flue and take gas |
| CN114165466A (en) * | 2020-09-11 | 2022-03-11 | 上海申能电力科技有限公司 | Method for recovering stalled one fan in double-row parallel axial flow primary fan |
| CN112228893A (en) * | 2020-10-23 | 2021-01-15 | 大唐湘潭发电有限责任公司 | Air volume adjusting device and method for draught fan of large power station boiler |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |