CN210003345U - auxiliary frequency modulation system using variable output of small turbine - Google Patents
auxiliary frequency modulation system using variable output of small turbine Download PDFInfo
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- CN210003345U CN210003345U CN201920703229.XU CN201920703229U CN210003345U CN 210003345 U CN210003345 U CN 210003345U CN 201920703229 U CN201920703229 U CN 201920703229U CN 210003345 U CN210003345 U CN 210003345U
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Abstract
The utility model discloses an utilize little steam turbine to become auxiliary frequency modulation system of exerting oneself, including high-pressure cylinder, #1 high temperature heating ware, #2 high temperature heating ware, #3 high temperature heating ware, little steam turbine, the water feed pump, the condensate water pipeline, the generator, high pressure cylinder, intermediate pressure cylinder and low pressure cylinder, the steam discharge port of high-pressure cylinder is linked together with #2 high temperature heating ware's steam inlet, the intermediate stage steam extraction port of high-pressure cylinder is linked together with #1 high temperature heating ware's steam inlet, the intermediate stage steam extraction port of intermediate pressure cylinder is linked together with #3 high temperature heating ware's steam inlet, the last steam extraction port of intermediate pressure cylinder is linked together with the steam inlet of little steam turbine, little steam turbine and water feed pump coaxial arrangement, the condensate water pipeline is linked together through the water feed pump in proper order, #3 high temperature heating ware and #2 high temperature heating ware and #1 high temperature heating ware's water inlet, the generator is connected with high-pressure cylinder, intermediate pressure cylinder and low pressure cylinder, this.
Description
Technical Field
The utility model belongs to thermal power generation technology peak shaving field relates to kinds of auxiliary frequency modulation system that utilize little steam turbine to become to exert oneself.
Background
In recent years, the installed capacity of new energy electric power such as wind power, photovoltaic and hydropower in China is continuously and rapidly increased, and the new energy provides a large amount of clean electric power for people and simultaneously brings great challenges to the safe operation and power supply guarantee of a power grid. In 2016, 7, 4 months, the national energy agency has reached the notification of the thermal power flexibility improvement test point project. Informing requirements, digging the peak-adjusting and frequency-adjusting potential of the thermal power generating unit, improving the thermal power operation flexibility of China and improving the new energy consumption capability.
The bypass water supply regulation is which is an effective measure for improving the variable load rate of the unit at present, and the steam extraction amount of the high-pressure heater can be reduced by using a short-time bypass water supply flow mode, so that the output power of the unit is increased in a short time, the aim of improving the variable load rate of the unit is fulfilled, but the corresponding improvement cost is higher, and the problem that the bypass needs to be preheated causes the difficulty in operation and control of the system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide kinds of auxiliary frequency modulation systems that utilize little steam turbine to become to exert oneself, this system can change the output of unit fast, reforms transform with low costsly, and easy operation.
In order to achieve the above object, the auxiliary frequency modulation system using variable output of a small steam turbine of the present invention comprises a high pressure cylinder, a #1 high temperature heater, a #2 high temperature heater, a #3 high temperature heater, a small steam turbine, a feed pump, a condensed water pipeline, a generator, a high pressure cylinder, a medium pressure cylinder and a low pressure cylinder;
the steam outlet of the high-pressure cylinder is communicated with the steam inlet of the #2 high-temperature heater, the middle-stage steam outlet of the high-pressure cylinder is communicated with the steam inlet of the #1 high-temperature heater, the middle-stage steam outlet of the middle-pressure cylinder is communicated with the steam inlet of the #3 high-temperature heater, the last-stage steam outlet of the middle-pressure cylinder is communicated with the steam inlet of the small steam turbine, the small steam turbine and the water feed pump are coaxially arranged, a condensed water pipeline is communicated with the water inlet of the #1 high-temperature heater sequentially through the water feed pump, the #3 high-temperature heater and the #2 high-temperature heater, and the generator is connected with the high-pressure cylinder, the.
The final stage steam extraction port of the intermediate pressure cylinder is communicated with the end of the valve , and the other end of the valve is communicated with the steam inlet of the small steam turbine.
The generator is coaxially arranged with the high pressure cylinder, the intermediate pressure cylinder and the low pressure cylinder.
The utility model discloses following beneficial effect has:
utilize little steam turbine to become supplementary frequency modulation system of exerting oneself when concrete operation, under the normal condition, the normal doing work of feed pump, condensate water that comes from the oxygen-eliminating device enters into #3 high temperature heating ware after the feed pump pressurization, #2 high temperature heating ware and #1 high temperature heating ware, when the unit needs reduce the load fast, make more steam extractions enter into little steam turbine, thereby increase exerting oneself of feed pump, increase #3 high temperature heating ware in the twinkling of an eye, #2 high temperature heating ware and #1 high temperature heating ware's feedwater flow, with promoting #3 high temperature heating ware rapidly, #2 high temperature heating ware and #1 high temperature heating ware's air extraction volume, thereby reduce the work capacity of generator, realize the quick reduction of unit electrical load, when the unit needs promote electrical load fast, reduce the steam extraction volume that enters into in the little steam turbine, with reducing #3 high temperature heating ware, #2 high temperature heating ware and #1 high temperature heating ware's air extraction volume, and then promote the work capacity of generator, realize the quick rising of unit electrical load, simple structure, the operation is convenient, extremely strong, the demand of the current net load transformation equipment, of the low-rate of the demand of the current net, the demand of the low-load, the demand cost can be realized.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Wherein 1 is a high pressure cylinder, 2 is a medium pressure cylinder, 3 is a low pressure cylinder, 4 is a generator, 5 is a #1 high temperature heater, 6 is a #2 high temperature heater, 7 is a #3 high temperature heater, 8 is a feed water pump, 9 is a small turbine, and 10 is a valve .
Detailed Description
The present invention will be described in further detail at with reference to the accompanying drawings:
referring to fig. 1, the auxiliary frequency modulation system using variable output of a small steam turbine according to the present invention includes a high pressure cylinder 1, a #1 high temperature heater 5, a #2 high temperature heater 6, a #3 high temperature heater 7, a small steam turbine 9, a water feed pump 8, a condensed water pipe, a generator 4, a high pressure cylinder 1, an intermediate pressure cylinder 2, and a low pressure cylinder 3; the steam outlet of the high-pressure cylinder 1 is communicated with the steam inlet of the #2 high-temperature heater 6, the middle-stage steam outlet of the high-pressure cylinder 1 is communicated with the steam inlet of the #1 high-temperature heater 5, the middle-stage steam outlet of the middle-pressure cylinder 2 is communicated with the steam inlet of the #3 high-temperature heater 7, the final-stage steam outlet of the middle-pressure cylinder 2 is communicated with the steam inlet of the small steam turbine 9, the small steam turbine 9 and the water feed pump 8 are coaxially arranged, a condensed water pipeline is communicated with the water inlet of the #1 high-temperature heater 5 sequentially through the water feed pump 8, the #3 high-temperature heater 7 and the #2 high-temperature heater 6, and the generator 4 is connected with the high-pressure cylinder 1, the middle-.
The steam extraction port of the last stage of the intermediate pressure cylinder 2 is communicated with the end of a valve 10, the other end of the valve 10 is communicated with the steam inlet of a small steam turbine 9, and the generator 4 is coaxially arranged with the high pressure cylinder 1, the intermediate pressure cylinder 2 and the low pressure cylinder 3.
The concrete working process of the utility model is as follows:
during the normal operation of the unit, the control valve 10 enables the water supply pump 8 to work normally, and condensed water from the deaerator enters the #3 high-temperature heater 7, the #2 high-temperature heater 6 and the #1 high-temperature heater 5 after being pressurized by the water supply pump 8;
when the unit needs to reduce the load quickly, the opening degree of the valve 10 is increased, so that more steam is extracted into the small steam turbine 9, the output of the water supply pump 8 is increased, the water supply flow is increased instantly, the steam extraction amount of the corresponding # 3 high-temperature heater 7, #2 high-temperature heater 6 and #1 high-temperature heater 5 is increased quickly, the work amount of the generator 4 is reduced, and the electric load of the unit is reduced quickly;
when the unit needs to rapidly lift the load, the opening of the valve 10 is reduced, so that the output of the water feeding pump 8 is instantly reduced, the water feeding amount of the water fed into the #3 high-temperature heater 7, the #2 high-temperature heater 6 and the #1 high-temperature heater 5 is rapidly reduced, the steam extraction amount of the corresponding # 3 high-temperature heater 7, the #2 high-temperature heater 6 and the #1 high-temperature heater 5 is rapidly reduced, and the electric load of the unit is rapidly increased.
The utility model has the advantages of simple structure, convenient operation, the practicality is extremely strong, and the variable load speed of unit is fast, can satisfy the high-quality frequency modulation demands of electric wire netting.
Claims (3)
- The auxiliary frequency modulation system using variable output of a small steam turbine is characterized by comprising a high-pressure cylinder (1), a #1 high-temperature heater (5), a #2 high-temperature heater (6), a #3 high-temperature heater (7), a small steam turbine (9), a water feed pump (8), a condensed water pipeline, a generator (4), a high-pressure cylinder (1), an intermediate-pressure cylinder (2) and a low-pressure cylinder (3);the steam exhaust port of the high-pressure cylinder (1) is communicated with the steam inlet of the #2 high-temperature heater (6), the middle-stage steam exhaust port of the high-pressure cylinder (1) is communicated with the steam inlet of the #1 high-temperature heater (5), the middle-stage steam exhaust port of the medium-pressure cylinder (2) is communicated with the steam inlet of the #3 high-temperature heater (7), the last-stage steam exhaust port of the medium-pressure cylinder (2) is communicated with the steam inlet of the small steam turbine (9), the small steam turbine (9) and the water feed pump (8) are coaxially arranged, a condensed water pipeline is communicated with the water inlet of the #1 high-temperature heater (5) sequentially through the water feed pump (8), the #3 high-temperature heater (7) and the #2 high-temperature heater (6), and the generator (4) is connected with the high-pressure cylinder (1), the medium-pressure cylinder (2) and.
- 2. The auxiliary frequency modulation system using variable output of small steam turbine according to claim 1, characterized in that the last stage steam extraction port of the intermediate pressure cylinder (2) is connected to end of the valve (10), and the other end of the valve (10) is connected to the steam inlet of the small steam turbine (9).
- 3. Auxiliary frequency control system using the variable output of small steam turbines according to claim 1, characterized in that the generator (4) is arranged coaxially with the high pressure cylinder (1), the intermediate pressure cylinder (2) and the low pressure cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703229.XU CN210003345U (en) | 2019-05-16 | 2019-05-16 | auxiliary frequency modulation system using variable output of small turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703229.XU CN210003345U (en) | 2019-05-16 | 2019-05-16 | auxiliary frequency modulation system using variable output of small turbine |
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| CN210003345U true CN210003345U (en) | 2020-01-31 |
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| CN201920703229.XU Active CN210003345U (en) | 2019-05-16 | 2019-05-16 | auxiliary frequency modulation system using variable output of small turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090539A (en) * | 2021-04-08 | 2021-07-09 | 西安热工研究院有限公司 | Air cooling unit primary frequency modulation electric water supply system based on double-fed system |
| CN113107878A (en) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | Double-fed system-based primary frequency modulation electric induced draft fan system of wet cooling unit |
| CN114856733A (en) * | 2022-05-18 | 2022-08-05 | 西安热工研究院有限公司 | Steam turbine set power generation system |
-
2019
- 2019-05-16 CN CN201920703229.XU patent/CN210003345U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090539A (en) * | 2021-04-08 | 2021-07-09 | 西安热工研究院有限公司 | Air cooling unit primary frequency modulation electric water supply system based on double-fed system |
| CN113107878A (en) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | Double-fed system-based primary frequency modulation electric induced draft fan system of wet cooling unit |
| CN114856733A (en) * | 2022-05-18 | 2022-08-05 | 西安热工研究院有限公司 | Steam turbine set power generation system |
| CN114856733B (en) * | 2022-05-18 | 2024-06-04 | 西安热工研究院有限公司 | Turbine unit power generation system |
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