CN210715162U - Auxiliary frequency modulation system for changing output by combining feed pump with condensate pump - Google Patents
Auxiliary frequency modulation system for changing output by combining feed pump with condensate pump Download PDFInfo
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- CN210715162U CN210715162U CN201920703230.2U CN201920703230U CN210715162U CN 210715162 U CN210715162 U CN 210715162U CN 201920703230 U CN201920703230 U CN 201920703230U CN 210715162 U CN210715162 U CN 210715162U
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Abstract
The utility model discloses an auxiliary frequency modulation system for changing output by combining a water feed pump and a condensate pump, which comprises a controller, a water inlet pipeline, a water outlet pipeline, a high-pressure heater, a water feed pump, a deaerator, a low-pressure heater and a condensate pump; the inlet water pipeline is communicated with the inlet of the high-pressure heater through the condensate pump, the low-pressure heater, the deaerator and the water feeding pump in sequence, the outlet of the high-pressure heater is communicated with the outlet water pipeline, the steam inlet of the high-pressure heater, the steam inlet of the low-pressure heater and the steam inlet of the deaerator are respectively communicated with the steam extraction port of the unit, and the controller is connected with the control end of the condensate pump and the control end of the water feeding pump.
Description
Technical Field
The utility model belongs to thermal power generation technology peak shaving field relates to an utilize water-feeding pump to unite condensate pump and become auxiliary frequency modulation system who exerts power.
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 one of effective measures for improving the variable load rate of the unit at present, the steam extraction amount of a 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, the corresponding improvement cost is high, and the problem that the bypass needs to be preheated causes 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 an utilize the water-feeding pump to unite condensate pump and become the supplementary frequency modulation system of exerting oneself, this system can realize the quick change of unit load, and moves safety, easy operation.
In order to achieve the above purpose, the auxiliary frequency modulation system using the water feeding pump and the condensate pump to generate variable output comprises a controller, a water inlet pipeline, a water outlet pipeline, a high-pressure heater, a water feeding pump, a deaerator, a low-pressure heater and a condensate pump;
the water inlet pipeline is communicated with the inlet of the high-pressure heater through the condensate pump, the low-pressure heater, the deaerator and the water feed pump in sequence, the outlet of the high-pressure heater is communicated with the water outlet pipeline, the steam inlet of the high-pressure heater, the steam inlet of the low-pressure heater and the steam inlet of the deaerator are respectively communicated with the steam extraction port of the unit, and the controller is connected with the control end of the condensate pump and the control end of the water feed pump.
The inlet of the water inlet pipeline is communicated with the water outlet of an external condenser, and the water outlet pipeline is communicated with the water inlet of an external economizer.
The utility model discloses following beneficial effect has:
when the auxiliary frequency modulation system utilizing the water feeding pump and the condensate pump to change the output power is in specific operation, under the normal condition, the water feeding pump and the condensate pump work normally, condensate from the condenser enters the low-pressure heater after being pressurized by the condensate pump, and condensate output by the deaerator enters the high-pressure heater after being pressurized by the water feeding pump; when the unit needs to reduce the load quickly, the condensed water pump and the water feeding pump are controlled by the controller to improve the output of the condensed water pump and the water feeding pump, so that the flow of the condensed water and the water feeding pump is increased quickly, more steam is pumped into the high-pressure heater and the low-pressure heater, the work load of the steam turbine is reduced, and the quick reduction of the electric load of the unit is realized; when the unit needs promote the load fast, then reduce the exerting oneself of condensate pump and feed pump for condensate water and feed-water flow reduce rapidly, thereby make during less steam extraction gets into high pressure feed water heater and low pressure feed water heater, and then increase the work load of steam turbine, realize quick rising of unit electric load, the utility model discloses considered boiler system to have great thermal inertia, system simple structure, convenient operation, system operation safety, the practicality is strong, and the variable load rate of unit is fast, can satisfy the purpose of the high-quality primary frequency modulation demand of electric wire netting.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a high-pressure heater, 2 is a water supply pump, 3 is a deaerator, 4 is a low-pressure heater, and 5 is a condensate pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the auxiliary frequency modulation system using a feed pump in combination with a condensate pump to generate variable output of the present invention includes a controller, a water inlet pipeline, a water outlet pipeline, a high pressure heater 1, a feed pump 2, a deaerator 3, a low pressure heater 4, and a condensate pump 5; the water inlet pipeline is communicated with the inlet of the high-pressure heater 1 through a condensate pump 5, a low-pressure heater 4, a deaerator 3 and a water feeding pump 2 in sequence, the outlet of the high-pressure heater 1 is communicated with the water outlet pipeline, a steam inlet of the high-pressure heater 1, a steam inlet of the low-pressure heater 4 and a steam inlet of the deaerator are respectively communicated with a steam extraction port of the unit, and the controller is connected with a control end of the condensate pump 5 and a control end of the water feeding pump 2; the inlet of the water inlet pipeline is communicated with the water outlet of an external condenser, and the water outlet pipeline is communicated with the water inlet of an external economizer.
The concrete working process of the utility model is as follows:
during the normal operation of the unit, the water feeding pump 2 and the condensate pump 5 work normally, and condensate from the condenser is pressurized by the condensate pump 5 and then sequentially enters the low-pressure heater 4, the deaerator 3, the water feeding pump 2 and the high-pressure heater 1;
when the unit needs to reduce the load quickly, the controller controls the condensate pump 5 and the water feed pump 2 to improve the output of the condensate pump 5 and the water feed pump 2, so that the flow of the condensate water and the flow of the water feed pump 2 are increased quickly, more steam is pumped into the high-pressure heater 1 and the low-pressure heater 4, the work load of the steam turbine is reduced, and the quick reduction of the electric load of the unit is realized;
when the load of the unit needs to be quickly increased, the condensed water pump 5 and the water feeding pump 2 are controlled through the controller, so that the output of the condensed water pump 5 and the output of the water feeding pump 2 are reduced, the condensed water passing through the condensed water pump 5 and the water feeding flow of the water feeding pump 2 are rapidly reduced, the fact that all levels of extracted steam enter the high-pressure heater 1 and the low-pressure heater 4 is reduced, the work capacity of the steam turbine is increased, and the electric load of the unit is quickly increased.
The utility model discloses simple structure, convenient operation, the practicality is strong, and the variable load speed of unit is fast, can satisfy the purpose of electric wire netting high quality primary control demand.
Claims (2)
1. An auxiliary frequency modulation system for changing output by combining a water feed pump and a condensate pump is characterized by comprising a controller, a water inlet pipeline, a water outlet pipeline, a high-pressure heater (1), a water feed pump (2), a deaerator (3), a low-pressure heater (4) and a condensate pump (5);
the water inlet pipeline is communicated with an inlet of the high-pressure heater (1) through a condensate pump (5), a low-pressure heater (4), a deaerator (3) and a water feeding pump (2) in sequence, an outlet of the high-pressure heater (1) is communicated with a water outlet pipeline, a steam inlet of the high-pressure heater (1), a steam inlet of the low-pressure heater (4) and a steam inlet of the deaerator are respectively communicated with a steam extraction port of the unit, and the controller is connected with a control end of the condensate pump (5) and a control end of the water feeding pump (2).
2. The auxiliary frequency modulation system according to claim 1, wherein the inlet of the inlet pipe is connected to the outlet of the external condenser, and the outlet pipe is connected to the inlet of the external economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703230.2U CN210715162U (en) | 2019-05-16 | 2019-05-16 | Auxiliary frequency modulation system for changing output by combining feed pump with condensate pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703230.2U CN210715162U (en) | 2019-05-16 | 2019-05-16 | Auxiliary frequency modulation system for changing output by combining feed pump with condensate pump |
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| Publication Number | Publication Date |
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| CN210715162U true CN210715162U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920703230.2U Active CN210715162U (en) | 2019-05-16 | 2019-05-16 | Auxiliary frequency modulation system for changing output by combining feed pump with condensate pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217130A (en) * | 2021-03-17 | 2021-08-06 | 西安热工研究院有限公司 | Deaerator and condenser hot well capacity selection method based on condensed water frequency modulation |
-
2019
- 2019-05-16 CN CN201920703230.2U patent/CN210715162U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217130A (en) * | 2021-03-17 | 2021-08-06 | 西安热工研究院有限公司 | Deaerator and condenser hot well capacity selection method based on condensed water frequency modulation |
| CN113217130B (en) * | 2021-03-17 | 2023-01-31 | 西安热工研究院有限公司 | Deaerator and condenser hot well capacity selection method based on condensed water frequency modulation |
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