CN103089438A - Power generation system with thermal power generating unit coupled with external combustion gas turbine - Google Patents
Power generation system with thermal power generating unit coupled with external combustion gas turbine Download PDFInfo
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- CN103089438A CN103089438A CN2011103467036A CN201110346703A CN103089438A CN 103089438 A CN103089438 A CN 103089438A CN 2011103467036 A CN2011103467036 A CN 2011103467036A CN 201110346703 A CN201110346703 A CN 201110346703A CN 103089438 A CN103089438 A CN 103089438A
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Abstract
The present invention discloses a power generation system with a thermal power generating unit coupled with an external combustion gas turbine, including a boiler turbine generator unit, a compressor, an air preheater high temperature section, a combustion heater, an air turbine and a small generator. An adjusting device is arranged at the inlet of the compressor. The outlet of the compressor is connected to the air inlet of the air preheater high temperature section through a pipe. The air outlet of the air preheater high temperature section is connected to the high pressure air inlet of the combustion heater through a pipe. The high pressure air outlet of the combustion heater is connected with the turbine inlet through a pipe. The turbine outlet is connected with the combustion air inlet of the combustion heater through a pipe. The flue gas outlet of the combustion heater can be directly connected with the boiler furnace through a pipe, and also can be connected with the hot air inlet of a coal mill through a pipe. The combustion heater is provided with a fuel inlet, which is connected with the outlet of the coal mill. The compressor and the small generator are both driven by the air turbine.
Description
Technical field
The present invention relates to the power generation system of a kind of fired power generating unit and external-burning type gas turbine coupling.
Background technique
For the thermal power plant, the electric weight overwhelming majority of sending flows to electrical network, and another fraction (account for gross generation 3～10%) is personal as station service.Therefore, the Station Service Electrical-Energy of every reduction by 1% just is equivalent to provide 1% generated energy to electrical network more, will bring huge economic benefit to power plant so reduce station service power consumption rate.The technological scheme of reduction station service power consumption rate commonly used is to adopt small steam turbine to substitute powerful motor now, such as adopting small steam turbine to drive feed water pump, blower fan etc.But because the efficient of small steam turbine is lower, so adopt this mode can increase the steam consumption of full factory, even reduce the bulk supply coal consumption of unit.
Summary of the invention
For the deficiency that prior art exists, the present invention aims to provide a kind of power generation system of lower station service power consumption rate.
The technical solution used in the present invention is:
The power generation system of a kind of boiler and the coupling of external-burning type gas turbine comprises boiler Turbo-generator Set, gas compressor, air preheater high temperature section, burning heater, air turbine and small generators etc.Gas compressor machine ingress device for installing and adjusting, blower outlet is connected with air preheater high temperature section air inlet by pipeline, air preheater high temperature section air outlet slit is connected with the high-pressure air entrance of burning heater by pipeline, the high-pressure air outlet of burning heater is connected with turbine inlet by pipeline, and turbine outlet is connected with the combustion-supporting air entrance of burning heater by pipeline.The smoke outlet of burning heater can directly be connected with boiler furnace by pipeline, also can be connected with the hot air inlet of coal pulverizer by pipeline.Burning heater also is provided with fuel inlet, is connected with the coal pulverizer outlet by pipeline.Gas compressor and small generators drive by air turbine.
In the present invention, the exothermic process of external-burning type gas turbine with natural meeting thermal property, therefore can fully utilize heat extraction, has higher efficient.The station service in reduction thermal power plant that can be by a relatively large margin.
Description of drawings
Fig. 1 is the embodiment of the present invention 1 system schematic.
Fig. 2 is the embodiment of the present invention 2 system schematic.
Fig. 3 is the schematic diagram of burning heater in the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of reference numerals is as follows:
1,4,6,8,10,11,15,24,27---pipeline 2,25---controlling device
3---gas compressor 5---air preheater high temperature section
7---burning heater 9---air turbine
12---boiler furnace 13---flue
14---air preheater 16---feed water pump
17---economizer 18---superheater and reheater
19---steam turbine 20---vapour condenser
21---main generator 22---transmission device
23---small generators 26---coal pulverizer
28---fuel inlet 29---combustion-supporting air entrance
30---burner 31---heat exchanger pipe bundle
32---smoke outlet 33---high-pressure air entrance
34---the high-pressure air outlet
In embodiment 1 as shown in Figure 1, on the thermal power generation unit basis that is consisted of by capital equipments such as boiler furnace 12, steam turbine 19, main generator 21, vapour condenser 20, feed water pump 16, economizer 17, superheater and reheaters 18, the external-burning type gas turbine generating system that has been coupled, the external-burning type gas turbine generating system in Fig. 1,2 is made of black thick line.
Air enters gas compressor 3 by the pipeline 1 that controlling device 2 is housed, then compressed in gas compressor 3, high-pressure air after compression first enters through piping 4 and carries out preheating in air preheater high temperature section 5, then enter in burning heater 7 through piping 6 and continue to be heated, the High Temperature High Pressure air after being heated enters through piping 8 acting of expanding in air turbine 9.Air after acting enters in burning heater 7 through piping 10.Gas compressor 3 and small generators 23 are all driven by air turbine 9 by transmission device 22.
The air that is ejected by turbine enters in burning heater 7 by combustion-supporting air entrance 29, carries out mixed combustion with the fuel of coming in through fuel inlet 28 in burner 30, and fuel inlet 28 is connected with fuel tube 24.High-pressure air in the high-temperature flue gas heating heat exchanger pipe bundle 31 that burning produces, the flue gas after heat release enters pipeline 11 from smoke outlet 32, then enters boiler furnace 12.High-pressure air enters heat exchanger pipe bundle 31 from the high-pressure air entrance 33 of burning heater 7, flows out from high-pressure air outlet 34 after being heated.
In embodiment shown in Figure 22, the flue gas in burning heater 7 after heat release is not to enter boiler furnace 12 by pipeline 11, but enters the hot air inlet of coal pulverizer 26, removes dry raw coal.
The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of products under enlightenment of the present invention.Though but do any variation on its shape or structure, every or akin technological scheme identical with the present invention is all within its protection domain.
Claims (3)
1. the power generation system of a fired power generating unit and external-burning type gas turbine coupling, is characterized in that, comprises thermal power generation unit, gas compressor, air preheater high temperature section, burning heater, air turbine and small generators etc.Gas compressor ingress device for installing and adjusting, blower outlet is connected with air preheater high temperature section air inlet by pipeline, air preheater high temperature section air outlet slit is connected with burning heater high-pressure air entrance by pipeline, the outlet of burning heater high-pressure air is connected with turbine inlet by pipeline, turbine outlet is connected with burning heater combustion-supporting air entrance by pipeline, and the smoke outlet of burning heater is connected with boiler furnace by pipeline.The high-temperature part outer surfaces such as the pipeline in system, air preheater high temperature section, burning heater all need covering insulation material.Gas compressor, small generators are connected with turbine by transmission device.
Fired power generating unit according to claim 1 and external-burning type gas turbine the coupling power generation system, it is characterized in that, burning heater mainly is made of burner and heat exchanger pipe bundle, and wherein burner is connected with combustion-supporting air entrance, fuel inlet and smoke outlet; The two ends of heat exchanger pipe bundle are connected with the inlet/outlet of high-pressure air respectively.
3. the power generation system of fired power generating unit according to claim 1 and external-burning type gas turbine coupling, is characterized in that, the burning heater smoke outlet also can be connected with the hot air inlet of coal pulverizer by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103467036A CN103089438A (en) | 2011-11-07 | 2011-11-07 | Power generation system with thermal power generating unit coupled with external combustion gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103467036A CN103089438A (en) | 2011-11-07 | 2011-11-07 | Power generation system with thermal power generating unit coupled with external combustion gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103089438A true CN103089438A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103467036A Pending CN103089438A (en) | 2011-11-07 | 2011-11-07 | Power generation system with thermal power generating unit coupled with external combustion gas turbine |
Country Status (1)
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| CN (1) | CN103089438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765179A (en) * | 2013-11-22 | 2016-07-13 | 西门子股份公司 | Selective pressure kettle boiler for rotor air cooling applications |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3756022A (en) * | 1971-06-07 | 1973-09-04 | J Pronovost | External combustion engine |
| CN1071732A (en) * | 1992-10-29 | 1993-05-05 | 清华大学 | The method of differential bed coal combustion combined cycle and device |
| CN1216801A (en) * | 1997-10-20 | 1999-05-19 | 丰田自动车株式会社 | Internal combustion engine with combustion heater |
-
2011
- 2011-11-07 CN CN2011103467036A patent/CN103089438A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3756022A (en) * | 1971-06-07 | 1973-09-04 | J Pronovost | External combustion engine |
| CN1071732A (en) * | 1992-10-29 | 1993-05-05 | 清华大学 | The method of differential bed coal combustion combined cycle and device |
| CN1216801A (en) * | 1997-10-20 | 1999-05-19 | 丰田自动车株式会社 | Internal combustion engine with combustion heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765179A (en) * | 2013-11-22 | 2016-07-13 | 西门子股份公司 | Selective pressure kettle boiler for rotor air cooling applications |
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Application publication date: 20130508 |