CN210105936U - System for realizing steam-gas-electricity triple co-generation - Google Patents
System for realizing steam-gas-electricity triple co-generation Download PDFInfo
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- CN210105936U CN210105936U CN201920976610.3U CN201920976610U CN210105936U CN 210105936 U CN210105936 U CN 210105936U CN 201920976610 U CN201920976610 U CN 201920976610U CN 210105936 U CN210105936 U CN 210105936U
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Abstract
The utility model discloses a system for realizing combined supply of steam, gas and electricity, which comprises a boiler, a high pressure cylinder, a middle pressure cylinder, a first valve, a second valve, a third valve, a back pressure steam turbine, an industrial steam pipeline, a generator, a gearbox and an air compressor; the main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder, the outlet of the high-pressure cylinder is divided into three paths after passing through the reheating side of the boiler, wherein the first path is communicated with the inlet of the intermediate pressure cylinder through a first valve, the second path is communicated with one end of a second valve, the third path is communicated with one end of a third valve, the other end of the third valve is communicated with the steam inlet of the backpressure steam turbine, and the steam outlet of the backpressure steam turbine and the other end of the second valve are communicated with an industrial steam pipeline; the generator is connected with the output shaft of the backpressure steam turbine, the output shaft of the backpressure steam turbine is connected with the driving shaft of the air compressor through the gearbox, and the system can realize combined supply of steam, gas and electricity.
Description
Technical Field
The utility model relates to a joint system, concretely relates to system for realize vapour gas electricity trigeminy confession.
Background
The national policy encourages adopting mature and applicable energy-saving transformation technology such as heat supply transformation, etc. for
The 300MW and 600MW grade subcritical and supercritical units implement comprehensive and systematic energy-saving transformation, and the heat, electricity, steam and compressed air cogeneration is actively developed in small and medium-sized cities and industrial parks with concentrated heat loads. The coal-fired generating set can solve two problems of heat supply, steam supply and gas supply transformation, firstly, the increasing steam demand of peripheral industrial parks of a power plant is met, and the low-efficiency high-emission dispersed coal-fired small boiler in a centralized heat supply area is replaced, so that the purposes of energy conservation and emission reduction are achieved. And secondly, the equipment utilization efficiency of the coal-fired unit is improved, the heat, electricity and steam (gas) are supplied in a multi-element manner, the multi-element operation is realized, and the income of a power plant is increased.
The pressure and temperature parameters of the industrial steam required by users in the industrial park are relatively stable and are concentrated between 0.8MPa and 1.0MPa due to the special requirements of the production process and the production process, and meanwhile, the park has larger compressed air requirements. However, the industrial steam supply process has large throttling loss, 1.0 MPa-grade industrial steam is supplied to the outside by a 300MW subcritical unit, the steam is extracted from cold or hot, the requirement on external steam supply parameters is basically just met by more than 30% of load, when the load of the unit is increased to 100% of load, the pressure of the corresponding steam extraction section reaches more than 3.0MPa at the moment, the requirement on the steam parameters from the outside can be met only by a pressure reduction mode, and large alternating current loss exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a system that realizes vapour gas electricity trigeminy confession, this system can realize vapour, gas, the confession of uniting of electricity.
In order to achieve the purpose, the system for realizing the combined supply of the steam, the gas and the electricity comprises a boiler, a high-pressure cylinder, a medium-pressure cylinder, a first valve, a second valve, a third valve, a back pressure steam turbine, an industrial steam pipeline, a generator, a gearbox and an air compressor;
the main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder, the outlet of the high-pressure cylinder is divided into three paths after passing through the reheating side of the boiler, wherein the first path is communicated with the inlet of the intermediate pressure cylinder through a first valve, the second path is communicated with one end of a second valve, the third path is communicated with one end of a third valve, the other end of the third valve is communicated with the steam inlet of the backpressure steam turbine, and the steam outlet of the backpressure steam turbine and the other end of the second valve are communicated with an industrial steam pipeline;
the generator is connected with the output shaft of the backpressure steam turbine, and the output shaft of the backpressure steam turbine is connected with the driving shaft of the air compressor through the gearbox.
The main steam outlet of the boiler is communicated with the inlet of the high pressure cylinder through a gate valve.
A pressure reducer is arranged between the second valve and the industrial steam pipeline.
The outlet of the backpressure steam turbine is communicated with the industrial steam pipeline through a fourth valve.
The utility model discloses following beneficial effect has:
realize system of vapour gas electricity trigeminy confession when concrete operation, the reheat steam of boiler output divide into three routes, wherein, first all the way enters into the intermediate pressure jar, the second way is directly sent into industrial steam pipeline as industry confession vapour through the second valve, the third route does work in the backpressure steam turbine, then send into industrial steam pipeline in, the backpressure steam turbine drives the generator electricity generation, the backpressure steam turbine drives air compressor work simultaneously, output compressed air to realize vapour, gas, the confession of electricity jointly, it needs to explain, the utility model discloses the high-grade energy of recoverable large-scale coal-fired unit steam turbine intermediate pressure jar inlet end extraction vapour realizes the flexibility of vapour, gas, electricity, reliably supplies to the outside.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is high pressure cylinder, 2 is intermediate pressure cylinder, 3 is back pressure steam turbine, 4 is the generator, 5 is the gearbox, 6 is air compressor, 7 is first valve, 8 is the second valve, 9 is the third valve, 10 is the fourth valve, 11 is the gate valve, 12 is the decompressor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the system for realizing combined steam-gas-power supply of the present invention includes a boiler, a high pressure cylinder 1, a middle pressure cylinder 2, a first valve 7, a second valve 8, a third valve 9, a back pressure turbine 3, an industrial steam pipeline, a generator 4, a gearbox 5 and an air compressor 6; the main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder 1, the outlet of the high-pressure cylinder 1 is divided into three paths after passing through the reheating side of the boiler, wherein the first path is communicated with the inlet of the intermediate pressure cylinder 2 through a first valve 7, the second path is communicated with one end of a second valve 8, the third path is communicated with one end of a third valve 9, the other end of the third valve 9 is communicated with the steam inlet of the back pressure turbine 3, and the steam outlet of the back pressure turbine 3 and the other end of the second valve 8 are communicated with an industrial steam pipeline; the generator 4 is connected with an output shaft of the back pressure turbine 3, and the output shaft of the back pressure turbine 3 is connected with a driving shaft of the air compressor 6 through a gearbox 5.
The main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder 1 through a gate valve 11; a pressure reducer 12 is arranged between the second valve 8 and the industrial steam pipeline; the outlet of the back pressure turbine 3 is connected to the industrial steam pipeline via a fourth valve 10.
The utility model discloses a concrete working process does:
main steam output by the boiler enters the high-pressure cylinder 1, exhaust steam of the high-pressure cylinder 1 is divided into three paths after passing through a reheating side of the boiler, wherein the first path enters the intermediate pressure cylinder 2 through the first valve 7, the second path enters an industrial steam pipeline through the second valve 8, the third path enters the backpressure steam turbine 3 through the third valve 9 to do work, the exhaust steam of the backpressure steam turbine 3 enters the industrial steam pipeline, the backpressure steam turbine 3 drives the generator 4 to generate electricity, the backpressure steam turbine 3 drives the air compressor 6 to compress air through the gearbox 5, and the air compressor 6 outputs compressed air to realize combined supply of steam, gas and electricity.
The utility model discloses an excess pressure cascade utilization realizes vapour, gas, electricity three coproductions, the steam that extracts from 2 inlet ends of intermediate pressure jar promptly generates electricity through the 3 inflation work of backpressure steam turbine, the one end drive generator 4 of backpressure steam turbine 3 generates electricity, output power, the other end of backpressure steam turbine 3 drives air compressor 6 after the speed governing, corresponding compressed air is supplied outward, the exhaust pressure control of backpressure steam turbine 3 is about 1.0MPa, the exhaust satisfies industrial steam needs, set up simultaneously and supply vapour temperature and pressure reduction bypass (second valve 8 place bypass), realize emergent industry and supply vapour, thereby realize vapour, electricity, the gas polygeneration.
Claims (4)
1. A system for realizing combined supply of steam, gas and electricity is characterized by comprising a boiler, a high-pressure cylinder (1), a medium-pressure cylinder (2), a first valve (7), a second valve (8), a third valve (9), a backpressure steam turbine (3), an industrial steam pipeline, a generator (4), a gearbox (5) and an air compressor (6);
the main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder (1), the outlet of the high-pressure cylinder (1) is divided into three paths after passing through the reheating side of the boiler, wherein the first path is communicated with the inlet of the intermediate-pressure cylinder (2) through a first valve (7), the second path is communicated with one end of a second valve (8), the third path is communicated with one end of a third valve (9), the other end of the third valve (9) is communicated with the steam inlet of the backpressure steam turbine (3), and the steam outlet of the backpressure steam turbine (3) and the other end of the second valve (8) are communicated with an industrial steam pipeline;
the generator (4) is connected with an output shaft of the backpressure steam turbine (3), and the output shaft of the backpressure steam turbine (3) is connected with a driving shaft of the air compressor (6) through a gearbox (5).
2. The system for realizing combined steam, gas and electricity supply according to claim 1, wherein the main steam outlet of the boiler is communicated with the inlet of the high-pressure cylinder (1) through a gate valve (11).
3. The system for realizing triple co-generation of steam, gas and electricity according to claim 1, characterized in that a pressure reducer (12) is arranged between the second valve (8) and the industrial steam pipeline.
4. The system for realizing combined steam, gas and electricity supply according to claim 1, wherein the outlet of the back pressure turbine (3) is communicated with the industrial steam pipeline through a fourth valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976610.3U CN210105936U (en) | 2019-06-26 | 2019-06-26 | System for realizing steam-gas-electricity triple co-generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920976610.3U CN210105936U (en) | 2019-06-26 | 2019-06-26 | System for realizing steam-gas-electricity triple co-generation |
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| CN210105936U true CN210105936U (en) | 2020-02-21 |
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| CN201920976610.3U Active CN210105936U (en) | 2019-06-26 | 2019-06-26 | System for realizing steam-gas-electricity triple co-generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159372A (en) * | 2019-06-26 | 2019-08-23 | 西安西热节能技术有限公司 | A kind of system and method for realizing vapour pneumoelectric trilogy supply |
| CN112412553A (en) * | 2020-11-17 | 2021-02-26 | 西安热工研究院有限公司 | Multistage flexible heat supply system for two back pressing machines and control method |
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2019
- 2019-06-26 CN CN201920976610.3U patent/CN210105936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159372A (en) * | 2019-06-26 | 2019-08-23 | 西安西热节能技术有限公司 | A kind of system and method for realizing vapour pneumoelectric trilogy supply |
| CN112412553A (en) * | 2020-11-17 | 2021-02-26 | 西安热工研究院有限公司 | Multistage flexible heat supply system for two back pressing machines and control method |
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