CN203375464U - Linkage type air induction device in thermal power plant desulfurization smoke system - Google Patents
Linkage type air induction device in thermal power plant desulfurization smoke system Download PDFInfo
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- CN203375464U CN203375464U CN201320307330.6U CN201320307330U CN203375464U CN 203375464 U CN203375464 U CN 203375464U CN 201320307330 U CN201320307330 U CN 201320307330U CN 203375464 U CN203375464 U CN 203375464U
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- induced draft
- draft fan
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- introduced machine
- driven induced
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Abstract
The utility model discloses a linkage type air induction device in a thermal power plant desulfurization smoke system. The linkage type air induction device comprises a linkage control system and an induced draft fan system. The linkage control system is connected with the induced draft fan system. The induced draft fan system comprises at least one induced draft fan set. Each induced draft fan set is composed of a steam-driven induced draft fan and a power-driven induced draft fan. The multiple induced draft fan sets are arranged in a parallel connection mode and operate independently from one another. The linkage control system is used for controlling the steam-driven induced draft fans and the power-driven induced draft fans in the induced draft fan system. When water erosion occurs to a last stage blade of one steam-driven induced draft fan, the steam-driven induced draft fan is switched to one power-driven induced draft fan, and the power-driven induced draft fan replaces the steam-driven induced draft fan for operation. According to the linkage type air induction device, early warning and linkage control can be conducted when water erosion occurs to the last stage blade of one steam-driven induced draft fan under the condition of a low load, and therefore the switching between one steam-driven induced draft fan and one power-driven induced draft fan is realized.
Description
Technical field
The utility model relates to a kind of flue gas air inducing equipment of thermal power plant, specifically refers to the coordinated type blower unit in a kind of heat-engine plant desulfurized flue gas system.
Background technology
Along with scientific and technical development, the coal-fired unit of modern large electric power plant is gradually towards high parameter, powerful future development, and this makes the power of boiler induced-draft fan increase gradually.Simultaneously because the requirement of national green environmental protection, when installing desulfurizer additional, the old and new power plant generally air-introduced machine and desulfurization supercharger are merged, directly adopt air-introduced machine to overcome original flue gas system resistance and newly-increased desulphurization system resistance, be equivalent to reduce 1～2 equipment, the workload that reduces equipment investment and alleviate the attendant is had to positive meaning.Air-introduced machine and desulfurization booster fan further increase air-introduced machine power after merging, and for 1000MW ultra supercritical unit, the driving power of the separate unit air-introduced machine after merging has reached 8000～11000kW.
To large capacity fired power generating unit, adopt small turbine to drive the imagination of air-introduced machine scheme by ultra supercritical unit power plant, adopted and obtain novelty and apply.With air-introduced machine, adopt the Motor Drive mode to compare, adopt Steam Turbine Driven will embody following advantage:
(1) the excessive impact to station service electrical system of electric current while thoroughly solving the air-introduced machine startup;
(2) significantly reduce station service power consumption rate, increase delivery, improve the operating index of power plant, realize more power supply profit;
(3) blower fan all can keep high efficiency under different load;
(4) reduce power conversion link and energy loss, improved the utilization ratio of heat energy.
Steam-driven induced draft fan is under running on the lower load, and water erosion easily occurs last stage vane of steam turbine, and how when water erosion, sending in time early warning and making the emergent management measure is also to need the problem of considering.
The utility model content
The purpose of this utility model is to provide the coordinated type blower unit in a kind of heat-engine plant desulfurized flue gas system, this coordinated type blower unit can be under running on the lower load, carry out early warning and interlock control during to steam-driven induced draft fan exhaust stage blade generation water erosion, realize the switching between steam-driven induced draft fan and electronic air-introduced machine.
This purpose of the present utility model realizes by the following technical solutions: the coordinated type blower unit in a kind of heat-engine plant desulfurized flue gas system, it is characterized in that: described coordinated type blower unit comprises coordinated control system and draught fan system, described coordinated control system is connected with described draught fan system, described draught fan system comprises at least one group of air-introduced machine unit, each group air-introduced machine unit forms by a steam-driven induced draft fan and an electronic air-introduced machine, many group air-introduced machine units are shape setting in parallel, work independent of one another, described coordinated control system is for controlling steam-driven induced draft fan and the electronic air-introduced machine of draught fan system, when the exhaust stage blade generation water erosion of steam-driven induced draft fan, steam-driven induced draft fan is switched to electronic air-introduced machine, substitute steam-driven induced draft fan by electronic air-introduced machine and carry out work.
Described draught fan system comprises two groups of air-introduced machine units, steam-driven induced draft fan and electronic air-introduced machine in each group air-introduced machine unit are shape setting in parallel, steam-driven induced draft fan and electronic air-introduced machine all are connected with the burner hearth of power plant boiler, for drawing the flue gas in burner hearth, the entrance of described steam-driven induced draft fan and the burner hearth of power plant boiler are connected with entrance pipe, the steam-driven induced draft fan inlet baffle is installed on this entrance pipe, the outlet of steam-driven induced draft fan is connected with export pipeline, be provided with the steam-driven induced draft fan outlet damper on this export pipeline, boiler smoke through steam-driven induced draft fan is discharged from this export pipeline, the entrance of described electronic air-introduced machine and the burner hearth of power plant boiler are connected with entrance pipe, electronic air-introduced machine inlet baffle is installed on this entrance pipe, the outlet of electronic air-introduced machine is connected with export pipeline, be provided with electronic air-introduced machine outlet damper on this export pipeline, boiler smoke through electronic air-introduced machine is discharged from this export pipeline, described coordinated control system respectively with described steam-driven induced draft fan, electronic air-introduced machine, electronic air-introduced machine inlet baffle, electronic air-introduced machine outlet damper, the steam-driven induced draft fan inlet baffle is connected with the steam-driven induced draft fan outlet damper, by controlling steam-driven induced draft fan, the operation of electronic air-introduced machine or stop and controlling electronic air-introduced machine inlet baffle, electronic air-introduced machine outlet damper, the unlatching of steam-driven induced draft fan inlet baffle and steam-driven induced draft fan outlet damper or close, realize the switching controls between steam-driven induced draft fan and electronic air-introduced machine.
Compared with prior art, coordinated type blower unit of the present utility model can be under running on the lower load, carry out early warning and interlock control during to steam-driven induced draft fan exhaust stage blade generation water erosion, make the emergent management measure, realize the switching between steam-driven induced draft fan and electronic air-introduced machine.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the overall structure schematic diagram of the coordinated type blower unit in the heat-engine plant desulfurized flue gas system of the utility model.
Description of reference numerals
10, coordinated control system; 100, steam-driven induced draft fan; 101, electronic air-introduced machine; 102, burner hearth; A, electronic air-introduced machine inlet baffle; B, electronic air-introduced machine outlet damper; C, steam-driven induced draft fan inlet baffle; D, steam-driven induced draft fan outlet damper;
The specific embodiment
Coordinated type blower unit in a kind of heat-engine plant desulfurized flue gas system as shown in Figure 1, comprise coordinated control system 10 and draught fan system, coordinated control system 10 is connected with draught fan system, steam-driven induced draft fan 100 and the electronic air-introduced machine 101 of coordinated control system 10 for controlling draught fan system, when the exhaust stage blade generation water erosion of steam-driven induced draft fan, steam-driven induced draft fan is switched to electronic air-introduced machine, substitute steam-driven induced draft fan by electronic air-introduced machine and carry out work.
Described draught fan system comprises two groups of air-introduced machine units, two groups of air-introduced machine units are shape setting in parallel, work independent of one another, each group air-introduced machine unit forms by a steam-driven induced draft fan 100 and an electronic air-introduced machine 101, steam-driven induced draft fan 100 and electronic air-introduced machine 101 in each group air-introduced machine unit are shape setting in parallel, steam-driven induced draft fan 100 and electronic air-introduced machine 101 all are connected with the burner hearth 102 of power plant boiler, for drawing the flue gas in burner hearth 102, the entrance of steam-driven induced draft fan 100 and the burner hearth of power plant boiler 102 are connected with entrance pipe, steam-driven induced draft fan inlet baffle C is installed on this entrance pipe, the outlet of steam-driven induced draft fan 100 is connected with export pipeline, be provided with steam-driven induced draft fan outlet damper D on this export pipeline, boiler smoke through steam-driven induced draft fan 100 is discharged from this export pipeline, flue gas after discharge enters chimney, the entrance of electronic air-introduced machine 101 and the burner hearth of power plant boiler 102 are connected with entrance pipe, electronic air-introduced machine inlet baffle A is installed on this entrance pipe, the outlet of electronic air-introduced machine 101 is connected with export pipeline, be provided with electronic air-introduced machine outlet damper B on this export pipeline, boiler smoke through electronic air-introduced machine 101 is discharged from this export pipeline, flue gas after discharge enters chimney, coordinated control system 10 respectively with steam-driven induced draft fan 100, electronic air-introduced machine 101, electronic air-introduced machine inlet baffle A, electronic air-introduced machine outlet damper B, steam-driven induced draft fan inlet baffle C is connected with steam-driven induced draft fan outlet damper D, by controlling steam-driven induced draft fan 100, the operation of electronic air-introduced machine 101 or stop and controlling electronic air-introduced machine inlet baffle A, electronic air-introduced machine outlet damper B, the unlatching of steam-driven induced draft fan inlet baffle C and steam-driven induced draft fan outlet damper D or close, realize the switching controls between steam-driven induced draft fan 100 and electronic air-introduced machine 101.
Conversion as the present embodiment, air-introduced machine unit in described draught fan system 11 is at least one group of air-introduced machine unit, each group air-introduced machine unit forms by a steam-driven induced draft fan 100 and an electronic air-introduced machine of setting up 101, many group air-introduced machine units are shape setting in parallel, work independent of one another.
The method of operating of above-mentioned coordinated type blower unit, the method comprises the steps:
The first step: when water erosion does not occur the steam-driven induced draft fan exhaust stage blade, keep steam-driven induced draft fan 100 normal operations, now, steam-driven induced draft fan inlet baffle C and steam-driven induced draft fan outlet damper D are all in opening, electronic air-introduced machine 101 is in closed condition, and the electronic air-introduced machine outlet damper B of electronic air-introduced machine 101 and electronic air-introduced machine inlet baffle A are all in closed condition;
Second step: when steam-driven induced draft fan exhaust stage blade generation water erosion, by coordinated control system 10, driven, open the electronic air-introduced machine outlet damper B of electronic air-introduced machine 101, keep electronic air-introduced machine inlet baffle A in closed condition;
The 3rd step: start electronic air-introduced machine 101, when electronic air-introduced machine 101 rotating speeds reach the on-load rotating speed, carry out the 3rd step command;
The 4th step: open electronic air-introduced machine inlet baffle A, close steam-driven induced draft fan 100, close steam-driven induced draft fan inlet baffle C, keep steam-driven induced draft fan outlet damper D in opening, so far, complete the switching of steam-driven induced draft fan 100 and electronic air-introduced machine 101.
Above-described embodiment of the present utility model is not the restriction to the utility model protection domain; embodiment of the present utility model is not limited to this; all this kind is according to foregoing of the present utility model; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite; the modification of other various ways that the utility model said structure is made, replacement or change, within all should dropping on protection domain of the present utility model.
Claims (2)
1. the coordinated type blower unit in a heat-engine plant desulfurized flue gas system, it is characterized in that: described coordinated type blower unit comprises coordinated control system (10) and draught fan system, described coordinated control system (10) is connected with described draught fan system, described draught fan system comprises at least one group of air-introduced machine unit, each group air-introduced machine unit forms by the electronic air-introduced machine of a steam-driven induced draft fan (100) He Yitai (101), many group air-introduced machine units are shape setting in parallel, work independent of one another, steam-driven induced draft fan (100) and the electronic air-introduced machine (101) of described coordinated control system (10) for controlling draught fan system, when the exhaust stage blade generation water erosion of steam-driven induced draft fan, steam-driven induced draft fan is switched to electronic air-introduced machine, substitute steam-driven induced draft fan by electronic air-introduced machine and carry out work.
2. the coordinated type blower unit in heat-engine plant desulfurized flue gas system according to claim 1, it is characterized in that: described draught fan system comprises two groups of air-introduced machine units, steam-driven induced draft fan (100) and electronic air-introduced machine (101) in each group air-introduced machine unit are shape setting in parallel, steam-driven induced draft fan (100) and electronic air-introduced machine (101) all are connected with the burner hearth (102) of power plant boiler, for drawing the flue gas in burner hearth (102), the burner hearth (102) of the entrance of described steam-driven induced draft fan (100) and power plant boiler is connected with entrance pipe, steam-driven induced draft fan inlet baffle (C) is installed on this entrance pipe, the outlet of steam-driven induced draft fan (100) is connected with export pipeline, be provided with steam-driven induced draft fan outlet damper (D) on this export pipeline, boiler smoke through steam-driven induced draft fan (100) is discharged from this export pipeline, the burner hearth (102) of the entrance of described electronic air-introduced machine (101) and power plant boiler is connected with entrance pipe, electronic air-introduced machine inlet baffle (A) is installed on this entrance pipe, the outlet of electronic air-introduced machine (101) is connected with export pipeline, be provided with electronic air-introduced machine outlet damper (B) on this export pipeline, boiler smoke through electronic air-introduced machine (101) is discharged from this export pipeline, described coordinated control system (10) respectively with described steam-driven induced draft fan (100), electronic air-introduced machine (101), electronic air-introduced machine inlet baffle (A), electronic air-introduced machine outlet damper (B), steam-driven induced draft fan inlet baffle (C) is connected with steam-driven induced draft fan outlet damper (D), by controlling steam-driven induced draft fan (100), the operation of electronic air-introduced machine (101) or stop and controlling electronic air-introduced machine inlet baffle (A), electronic air-introduced machine outlet damper (B), the unlatching of steam-driven induced draft fan inlet baffle (C) and steam-driven induced draft fan outlet damper (D) or close, realize the switching controls between steam-driven induced draft fan (100) and electronic air-introduced machine (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320307330.6U CN203375464U (en) | 2013-05-31 | 2013-05-31 | Linkage type air induction device in thermal power plant desulfurization smoke system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320307330.6U CN203375464U (en) | 2013-05-31 | 2013-05-31 | Linkage type air induction device in thermal power plant desulfurization smoke system |
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| CN203375464U true CN203375464U (en) | 2014-01-01 |
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|---|---|---|---|
| CN201320307330.6U Withdrawn - After Issue CN203375464U (en) | 2013-05-31 | 2013-05-31 | Linkage type air induction device in thermal power plant desulfurization smoke system |
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| CN (1) | CN203375464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335325A (en) * | 2013-05-31 | 2013-10-02 | 广东电网公司电力科学研究院 | Linked draft device in desulfuration flue gas system of heat-engine plant and operation method of linked draft device |
| CN104235819A (en) * | 2014-07-29 | 2014-12-24 | 国家电网公司 | Control method for parallel operation of steam-driven induced draft fan and electric induced draft fan of thermal power generating unit |
| CN107854940A (en) * | 2017-11-02 | 2018-03-30 | 国粤（深圳）科技投资有限公司 | A kind of more unit thermal power generation flue gas pollutant joint removing means of underload |
-
2013
- 2013-05-31 CN CN201320307330.6U patent/CN203375464U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335325A (en) * | 2013-05-31 | 2013-10-02 | 广东电网公司电力科学研究院 | Linked draft device in desulfuration flue gas system of heat-engine plant and operation method of linked draft device |
| CN103335325B (en) * | 2013-05-31 | 2015-09-16 | 广东电网公司电力科学研究院 | Coordinated type blower unit in heat-engine plant desulfurized flue gas system and method for operating thereof |
| CN104235819A (en) * | 2014-07-29 | 2014-12-24 | 国家电网公司 | Control method for parallel operation of steam-driven induced draft fan and electric induced draft fan of thermal power generating unit |
| CN107854940A (en) * | 2017-11-02 | 2018-03-30 | 国粤（深圳）科技投资有限公司 | A kind of more unit thermal power generation flue gas pollutant joint removing means of underload |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20150916 |
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| RGAV | Abandon patent right to avoid regrant |