CN115217530A - Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation - Google Patents

Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation Download PDF

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Publication number
CN115217530A
CN115217530A CN202210870979.2A CN202210870979A CN115217530A CN 115217530 A CN115217530 A CN 115217530A CN 202210870979 A CN202210870979 A CN 202210870979A CN 115217530 A CN115217530 A CN 115217530A
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China
Prior art keywords
steam
pressure
pipeline
thermometer
pressure gauge
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Pending
Application number
CN202210870979.2A
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Chinese (zh)
Inventor
吕晨峰
安磊
殷结峰
谭增强
王海涛
牛国平
肖海丰
岳佳全
白鹏
贾林权
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Priority to CN202210870979.2A priority Critical patent/CN115217530A/en
Priority to NL2033329A priority patent/NL2033329B1/en
Publication of CN115217530A publication Critical patent/CN115217530A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/02—Arrangements of feed-water pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/08—Adaptations for driving, or combinations with, pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/18—Controlling water feed or water level; Automatic water feeding or water-level regulators for varying the speed or delivery pressure of feed pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/26—Automatic feed-control systems
    • F22D5/32—Automatic feed-control systems influencing the speed or delivery pressure of the feed pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Control Of Turbines (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention discloses a system and a method for switching steam sources of a steam-driven feed water pump adaptive to deep peak shaving, wherein the system comprises a small machine low-pressure steam inlet pipeline, a small machine steam pipeline for debugging, a small machine steam pipeline for deep peak shaving, a steam inlet pipeline and a steam-driven feed water pump; the system and the method can realize the whole process control of the steam feed pump from startup debugging, normal operation and deep peak regulation low-load working condition operation, and improve the operation stability and the safety of the steam feed pump steam inlet system.

Description

Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation
Technical Field
The invention belongs to the field of automatic control of steam-water systems of thermal power plants, and relates to a system and a method for steam source switching of a steam feed water pump, which are suitable for deep peak shaving.
Background
In order to absorb new energy power generation, flexibility of a thermal power generating unit is improved more and more, a plurality of problems occur along with reduction of deep peak load of the unit, four-section steam extraction parameters are reduced under the deep peak load condition of the unit and cannot meet the requirement of the minimum steam inlet parameter of a steam feed pump, and in order to solve the operation problem of the steam feed pump of the unit under the deep peak load condition and create conditions for further exploring the load of the unit, a system and a method are needed to solve the system control problem of the steam feed pump of the unit under the deep peak load condition.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for switching the steam source of a steam feed pump adaptive to deep peak shaving, which can realize the whole process control of starting debugging, normal operation and deep peak shaving low-load working condition operation of the steam feed pump and improve the operation stability and safety of a steam inlet system of the steam feed pump.
In order to achieve the aim, the system for switching the steam source of the steam feed pump adaptive to the deep peak shaving comprises a small machine low-pressure steam inlet pipeline, a small machine steam pipeline for the debugging, a small machine steam pipeline for the deep peak shaving, a steam inlet pipeline and the steam feed pump;
the outlet of the small machine low-pressure steam inlet pipeline, the outlet of the steam pipeline for small machine debugging and the outlet of the steam pipeline for small machine depth peak regulation are communicated with the inlet of the steam inlet pipeline, and the outlet of the steam inlet pipeline is communicated with the inlet of the steam-driven water-feeding pump;
a second pressure gauge, a second thermometer, a second electric door and a first flowmeter are sequentially arranged on the small-machine low-pressure steam inlet pipeline along the working medium flowing direction;
a third pressure gauge, a third thermometer and a third electrically operated gate are sequentially arranged on the steam pipeline for the small machine debugging along the flow direction of the working medium;
a fourth pressure gauge, a fourth thermometer, a fourth electric door, a first regulating valve and a second flowmeter are sequentially arranged on the steam pipeline for the depth peak regulation of the small engine along the working medium flowing direction;
a first pressure gauge, a first thermometer and a first electric door are sequentially arranged on the steam inlet pipeline along the working medium flowing direction.
And a pipeline between the first flow meter and the second electric door is communicated with the auxiliary steam header through an auxiliary steam header steam supply pipeline.
And a pipeline between the first flow meter and the second electric door is communicated with the deaerator through a deaerator steam supply pipeline.
The steam inlet pipeline is sequentially provided with a first pressure gauge, a first thermometer, a first electric door and a first quick-closing check valve along the working medium flowing direction.
And a second pressure gauge, a second thermometer, a second quick-closing check valve, a second electric door, a first flowmeter and a first check valve are sequentially arranged on the small-machine low-pressure steam inlet pipeline along the working medium flowing direction.
And a fourth pressure gauge, a fourth thermometer, a fourth electric door, a first regulating valve, a second flowmeter and a second check valve are sequentially arranged on the steam pipeline for the depth peak regulation of the small machine along the working medium flowing direction.
The method for switching the steam source of the steam feed water pump adaptive to deep peak shaving comprises the following steps:
1) Setting the minimum temperature t of the steam inlet of the steam feed pump zd And a minimum pressure value P zd Setting a normal operation temperature value t yx And normal operating pressure value P yx Setting an alarm temperature t bj And alarm pressure value P bj ；
2) When the unit is in the stage of not starting and debugging the steam feed pump, the measured steam temperature t for debugging is obtained by the detection of a third thermometer 3 T is greater than or equal to zd And the third pressure gauge detects the obtained pressure P 3 Greater than or equal to P zd When the temperature t is measured at the steam inlet of the steam feed pump, the third electric door is opened, and the measured temperature t is measured by the first thermometer 1 Is greater than or equal to t zd And the first pressure gauge detects the obtained pressure P 1 Greater than or equal to P zd If the steam-driven water-feeding pump is in the normal operation state, the first electric door is opened to debug the steam-driven water-feeding pump, and in the debugging process, the actually-measured temperature t of the steam inlet of the steam-driven water-feeding pump, which is detected by the first thermometer 1 And the pressure P detected by the first pressure gauge 1 Are respectively less than the set alarm temperature value t bj And an alarm pressure value P bj (ii) a When the second thermometer detects the measured temperature t of the small machine low-pressure steam 2 Is greater than or equal to t zd And the pressure P detected by the second pressure gauge 2 Greater than or equal to P zd If yes, turning to the step 3);
3) After the unit is started, the measured temperature t of the small-sized machine low-pressure steam is detected by the second thermometer 2 T is greater than or equal to ts And the second pressure gauge detects the obtained pressure P 2 Greater than or equal to P ts And when the steam source is switched, the second electric door is opened, the third electric door is closed to switch the steam source of the steam feed pump, wherein the actually measured temperature t of the steam inlet of the steam feed pump, which is detected by the first thermometer 1 And the pressure P detected by the first pressure gauge 1 Are respectively less than or equal to the set alarm temperature value t bj And an alarm pressure value P bj (ii) a When the unit is reduced along with the load, the measured temperature t of the small machine low-pressure steam obtained by the detection of the second thermometer 2 Near t ts Or the pressure P detected by the second pressure gauge 2 Near to P ts When the load needs to be further reduced, the step 4) is carried out;
4) The measured temperature t of the steam for the depth peak regulation of the small engine is obtained by the detection of the fourth thermometer 4 T is greater than or equal to zd And the pressure P detected by the fourth pressure gauge 4 Greater than or equal to P zd And when the fourth electric door is opened, the steam consumption parameter of the small machine for depth peak regulation is regulated through the first regulating valve.
In the step 4), when the fourth thermometer detects the measured temperature t of the steam for the deep peak regulation of the small machine 4 Near t zd Or pressure P detected by a fourth pressure gauge 4 Near to P zd And when the load is not reduced, the steam feed pump does not have the load reducing condition.
The invention has the following beneficial effects:
when the system and the method for switching the steam source of the steam feed pump adapt to the deep peak regulation are in specific operation, the steam source selection which is most suitable for the operation of the steam feed pump under the current load is obtained by detecting and accurately calculating the steam inlet parameters of each steam inlet branch of the steam feed pump in real time, the following of the steam feed pump to the working conditions under different load working conditions is completed, the whole process control of starting debugging, normal operation and deep peak regulation low-load working condition operation of the steam feed pump is realized, and the operation stability and the safety of the steam inlet system of the steam feed pump are improved.
Drawings
FIG. 1 is a system diagram of the present invention;
wherein, 1 is the steam-operated feed water pump, 2 is the first check valve that closes soon, 3 is first electrically operated gate, 4 is the first thermometer, 5 is the first manometer, 6 is the first check valve, 7 is the first flowmeter, 8 is the oxygen-eliminating device steam supply pipeline, 9 is the auxiliary steam header steam supply pipeline, 10 is the second electrically operated gate, 11 is the second check valve that closes soon, 12 is the second thermometer, 13 is the second manometer, 14 is the third electrically operated gate, 15 is the third thermometer, 16 is the third manometer, 17 is the second check valve, 18 is the second flowmeter, 19 is the first governing valve, 20 is the fourth electrically operated gate, 21 is the fourth thermometer, 22 is the fourth manometer.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the system for switching the steam source of the steam feed pump adapting to the deep peak shaving comprises a small-machine low-pressure steam inlet pipeline, a small-machine steam pipeline for the peak shaving, a steam inlet pipeline and a steam feed pump 1;
the export of cell-phone low pressure admission pipeline, the export of the pipeline of the gas for cell-phone debugging and the export of the pipeline of the gas for cell-phone degree of depth peak shaving all are linked together with the entry of admission pipeline, and the export of admission pipeline is linked together with the entry of steam feed pump 1, second pressure gauge 13, second thermometer 12, second quick-closing check valve 11, second electrically operated gate 10, first flowmeter 7 and first check valve 6 have set gradually along the working medium circulation direction on the cell-phone low pressure admission pipeline, and wherein, the pipeline between first flowmeter 7 and the second electrically operated gate 10 supplies vapour pipeline 9 and auxiliary steam header to be linked together through auxiliary steam header, and the pipeline between first flowmeter 7 and the second electrically operated gate 10 supplies vapour pipeline 8 and deaerator to be linked together through the deaerator.
A third pressure gauge 16, a third temperature gauge 15 and a third electric door 14 are sequentially arranged on the steam pipeline for the debugging of the small machine along the flowing direction of the working medium;
a fourth pressure gauge 22, a fourth thermometer 21, a fourth electric door 20, a first regulating valve 19, a second flowmeter 18 and a second check valve 17 are sequentially arranged on the steam pipeline for the depth peak regulation of the small machine along the working medium flowing direction;
a first pressure gauge 5, a first thermometer 4, a first electric door 3 and a first quick-closing check valve 2 are sequentially arranged on the steam inlet pipeline along the working medium flowing direction;
the reverse connection of the steam supply systems is prevented by the first check valve 6 and the second check valve 17.
The method for switching the steam source of the steam feed water pump adaptive to deep peak shaving comprises the following steps:
1) Setting the minimum temperature t of the steam inlet of the steam feed water pump 1 zd And a minimum pressure value P zd Setting a normal operation temperature value t yx And normal operating pressure value P yx Setting an alarm temperature t bj And alarm pressure value P bj ；
2) When the unit is in the stage of not starting and debugging the steam-driven water feeding pump 1, the third thermometer 15 detects the measured temperature t of the debugging steam 3 T is greater than or equal to zd And the third pressure gauge 16 detects the resulting pressure P 3 Greater than or equal to P zd When the temperature t is measured at the steam inlet of the steam feed pump 1, the third electric door 14 is opened, and the measured temperature t is measured by the first thermometer 4 1 Is greater than or equal to t zd And the pressure P detected by the first pressure gauge 5 1 Greater than or equal to P zd (ii) a The first electric door 3 is opened to debug the steam feed pump 1, and the measured steam inlet temperature t of the steam feed pump 1 detected by the first thermometer 4 is measured during debugging 1 And the pressure P detected by the first pressure gauge 5 1 Are respectively less than the set alarm temperature value t bj And an alarm pressure value P bj (ii) a When the measured temperature t of the small machine low-pressure steam is obtained by the detection of the second thermometer 12 2 Is greater than or equal to t zd And the second pressure gauge 13 is used for detectingMeasured pressure P 2 Is greater than or equal to P zd If yes, turning to the step 3);
3) After the unit is started, the measured temperature t of the small-machine low-pressure steam obtained by the detection of the second thermometer 12 2 Is greater than or equal to t ts And the pressure P detected by the second pressure gauge 13 2 Is greater than or equal to P ts If the steam source of the steam feed pump 1 is switched, the second electric door 10 is opened, and the third electric door 14 is closed, wherein the steam source of the steam feed pump 1 is switched, and the actually measured temperature t of the steam inlet of the steam feed pump 1, which is detected by the first thermometer 4 1 And the pressure P detected by the first pressure gauge 5 1 Are respectively less than or equal to the set alarm temperature value t bj And alarm pressure value P bj (ii) a When the unit is reduced along with the load, the measured temperature t of the small machine low-pressure steam is detected by the second thermometer 12 2 Near t ts Or the pressure P detected by the second pressure gauge 13 2 Near to P ts When the load needs to be further reduced, the step 4) is carried out;
4) The measured temperature t of the steam for the depth peak regulation of the small machine is obtained when the fourth thermometer 21 detects 4 Is greater than or equal to t zd And the pressure P detected by the fourth pressure gauge 22 4 Greater than or equal to P zd When the temperature is measured, the fourth electric door 20 is opened, the steam parameters for the depth peak regulation of the small machine are adjusted through the first adjusting valve 19, and the measured temperature t of the steam for the depth peak regulation of the small machine is measured by the fourth thermometer 21 4 Near t zd Or the pressure P detected by the fourth pressure gauge 22 4 Near P zd In time, the steam feed water pump 1 does not have the load reduction condition, and needs to be switched to the operation or stop of the electric feed water pump.
Meanwhile, the steam pressure and the temperature of the steam feed pump 1 are set as input parameters for system calculation, and when the load of a unit changes and the steam inlet parameters change, the steam source is switched in time, so that the stable operation of the steam feed pump 1 is ensured.
According to the invention, the steam flow of the steam feed water pump 1 is introduced into the control system, and the flow parameters are adjusted by the adjusting valve, so that the accurate steam admission control under deep peak regulation and low load working conditions is met.
According to the invention, the steam source selection which is most suitable for the operation of the steam feed pump 1 under the current load is obtained by detecting and accurately calculating the steam inlet parameters of each steam inlet system of the steam feed pump 1 in real time, and the following of the steam feed pump 1 to the working conditions under different load working conditions is completed, so that the steam feed pump 1 can safely and stably operate, conditions are provided for further deep peak regulation of the unit, and the long-time stable and safe operation of the unit under the deep peak regulation working condition is ensured.

Claims (8)

1. A steam-driven feed water pump steam source switching system adapting to deep peak regulation is characterized by comprising a small machine low-pressure steam inlet pipeline, a small machine steam pipeline for debugging, a small machine steam pipeline for deep peak regulation, a steam inlet pipeline and a steam-driven feed water pump (1);
the outlet of the small machine low-pressure steam inlet pipeline, the outlet of the steam pipeline for small machine debugging and the outlet of the steam pipeline for small machine depth peak regulation are communicated with the inlet of the steam inlet pipeline, and the outlet of the steam inlet pipeline is communicated with the inlet of the steam-driven water feeding pump (1);
a second pressure gauge (13), a second thermometer (12), a second electric door (10) and a first flowmeter (7) are sequentially arranged on the small-machine low-pressure steam inlet pipeline along the working medium flowing direction;
a third pressure gauge (16), a third temperature gauge (15) and a third electric door (14) are sequentially arranged on the steam pipeline for the small machine debugging along the flow direction of the working medium;
a fourth pressure gauge (22), a fourth thermometer (21), a fourth electric door (20), a first regulating valve (19) and a second flowmeter (18) are sequentially arranged on the steam pipeline for the depth peak regulation of the small machine along the working medium flowing direction;
the steam inlet pipeline is sequentially provided with a first pressure gauge (5), a first thermometer (4) and a first electric door (3) along the working medium flowing direction.
2. The system for steam source switching of the steam feed water pump adapting to deep peak shaving according to claim 1, characterized in that a pipeline between the first flow meter (7) and the second electric valve (10) is communicated with an auxiliary steam header through an auxiliary steam header steam supply pipeline (9).
3. The system for steam source switching of the steam feed water pump adapting to deep peak shaving according to claim 1, characterized in that a pipeline between the first flow meter (7) and the second electric valve (10) is communicated with a deaerator through a deaerator steam supply pipeline (8).
4. The system for switching the steam source of the steam feed water pump adapting to the deep peak regulation according to claim 1, wherein a first pressure gauge (5), a first thermometer (4), a first electric door (3) and a first quick-closing check valve (2) are sequentially arranged on a steam inlet pipeline along the flowing direction of a working medium.
5. The system for switching the steam source of the steam feed water pump adapting to the deep peak shaving is characterized in that a second pressure gauge (13), a second thermometer (12), a second quick-closing check valve (11), a second electric door (10), a first flowmeter (7) and a first check valve (6) are sequentially arranged on the small-machine low-pressure steam inlet pipeline along the working medium flowing direction.
6. The system for switching the steam source of the steam feed water pump adapting to the deep peak shaving according to claim 5, wherein a fourth pressure gauge (22), a fourth temperature gauge (21), a fourth electric valve (20), a first regulating valve (19), a second flow meter (18) and a second check valve (17) are sequentially arranged on a steam pipeline for the deep peak shaving of the small engine along the working medium flowing direction.
7. A method for switching steam sources of a steam feed water pump adaptive to deep peak shaving is characterized by comprising the following steps:
1) Setting the minimum temperature t of the steam inlet of the steam feed pump (1) zd And a minimum pressure value P zd Setting a normal operation temperature value t yx And normal operation pressure value P yx Setting an alarm temperature t bj And alarm pressure value P bj ；
2) When the unit is in the stage of not starting the debugging of the steam feed pump (1), when the debugging measured temperature t detected by the third thermometer (15) is used for debugging the steam feed pump 3 T is greater than or equal to zd And the third pressure gauge (16) is detectedPressure P of 3 Is greater than or equal to P zd When the temperature t is measured at the steam inlet of the steam feed pump (1) detected by the first thermometer (4), the third electric door (14) is opened 1 T is greater than or equal to zd And the pressure P detected by the first pressure gauge (5) 1 Greater than or equal to P zd If the steam feed pump (1) is debugged, the first electric door (3) is opened, and the actually measured temperature t of the steam inlet of the steam feed pump (1) detected by the first thermometer (4) is measured in the debugging process 1 And the pressure P detected by the first pressure gauge (5) 1 Are respectively less than the set alarm temperature value t bj And alarm pressure value P bj (ii) a When the second thermometer (12) detects the measured temperature t of the small machine low-pressure steam 2 Is greater than or equal to t zd And the pressure P detected by the second pressure gauge (13) 2 Greater than or equal to P zd If yes, turning to the step 3);
3) After the unit is started, when the second thermometer (12) detects the measured temperature t of the small-sized machine low-pressure steam 2 T is greater than or equal to ts And the pressure P detected by the second pressure gauge (13) 2 Greater than or equal to P ts When the temperature of the steam inlet of the steam-driven feed-water pump (1) is measured, the first thermometer (4) detects the measured temperature t, the second electric door (10) is opened, and the third electric door (14) is closed to switch the steam source of the steam-driven feed-water pump (1), wherein the measured temperature t is measured by the first thermometer (4) 1 And the pressure P detected by the first pressure gauge (5) 1 Are respectively less than or equal to the set alarm temperature value t bj And an alarm pressure value P bj (ii) a When the unit is reduced along with the load, the measured temperature t of the small machine low-pressure steam obtained by the detection of the second thermometer (12) 2 Near t ts Or the pressure P detected by the second pressure gauge (13) 2 Near P ts When the load needs to be further reduced, the step 4) is carried out;
4) When the fourth thermometer (21) detects the measured temperature t of the steam for the depth peak regulation of the small machine 4 T is greater than or equal to zd And the fourth pressure gauge (22) detects the obtained pressure P 4 Greater than or equal to P zd And meanwhile, the fourth electric door (20) is opened, and the steam parameters for the small machine depth peak regulation are adjusted through the first adjusting valve (19).
8. The method for switching the steam source of the steam feed water pump adapting to the deep peak shaving according to the claim 7, characterized in that in the step 4), when the measured temperature t of the steam for the deep peak shaving of the small engine is detected by the fourth thermometer (21) 4 Near t zd Or the pressure P detected by the fourth pressure gauge (22) 4 Near to P zd When the load is not reduced, the steam feed water pump (1) does not have the load reducing condition.
CN202210870979.2A 2022-07-22 2022-07-22 Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation Pending CN115217530A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210870979.2A CN115217530A (en) 2022-07-22 2022-07-22 Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation
NL2033329A NL2033329B1 (en) 2022-07-22 2022-10-17 System and method for switching steam source of steam-driven feed water pump adapted to deep peak regulation

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Application Number Priority Date Filing Date Title
CN202210870979.2A CN115217530A (en) 2022-07-22 2022-07-22 Steam-driven feed water pump steam source switching system and method adapting to deep peak regulation

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937287A (en) * 2012-11-15 2013-02-20 辽宁省电力有限公司电力科学研究院 Analyzing method for piping-main scheme intermediate reheat unit boiler start-up operating parameter characteristics
JP2013040576A (en) * 2011-08-12 2013-02-28 Miura Co Ltd Steam system
CN109296408A (en) * 2018-09-18 2019-02-01 国电南京电力试验研究有限公司 One kind giving mercury vapour turbine vapour source method for handover control
CN110985139A (en) * 2019-12-17 2020-04-10 浙江浙能技术研究院有限公司 Small machine steam admission control device and method based on application of standby steam source
CN112943387A (en) * 2021-04-02 2021-06-11 浙江浙能兰溪发电有限责任公司 Steam source control method and steam source control device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3279740B2 (en) * 1993-07-23 2002-04-30 株式会社日立製作所 Power plant water supply equipment
CN102563612A (en) * 2012-01-30 2012-07-11 浙江省电力设计院 Method for directly starting steam-driven feed water pump of large-sized thermal power plant
CN105114939B (en) * 2015-04-29 2017-07-21 大唐桂冠合山发电有限公司 A kind of Feed Water Regulation System for power plant boiler
CN106401666B (en) * 2016-07-26 2018-02-23 华电电力科学研究院 Coal unit EH oil and Steam Turhine Adjustment security system adjustment method and system
CN109057897B (en) * 2018-06-04 2021-05-14 广东红海湾发电有限公司 Steam source switching method for thermal power generating unit FCB
CN109538317B (en) * 2018-11-12 2021-04-06 东北电力大学 Regenerative system capable of improving peak regulation capacity of unit and dynamic calculation method for steam temperature of heat storage tank of regenerative system
CN110454769B (en) * 2019-08-23 2020-11-13 广西电网有限责任公司电力科学研究院 Control system and control method for high-backpressure steam-driven feed pump of large generator set
CN111322602B (en) * 2020-03-13 2021-03-30 山西大学 Deep peak shaving method of circulating fluidized bed boiler system
CN112483425B (en) * 2020-12-11 2022-10-11 中国电力工程顾问集团西北电力设计院有限公司 Constant-speed water supply pump pressure regulating device and operation method
CN114017146B (en) * 2021-10-29 2023-10-31 华能秦煤瑞金发电有限责任公司 No-electric pump starting load method for double-engine regenerative small steam turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013040576A (en) * 2011-08-12 2013-02-28 Miura Co Ltd Steam system
CN102937287A (en) * 2012-11-15 2013-02-20 辽宁省电力有限公司电力科学研究院 Analyzing method for piping-main scheme intermediate reheat unit boiler start-up operating parameter characteristics
CN109296408A (en) * 2018-09-18 2019-02-01 国电南京电力试验研究有限公司 One kind giving mercury vapour turbine vapour source method for handover control
CN110985139A (en) * 2019-12-17 2020-04-10 浙江浙能技术研究院有限公司 Small machine steam admission control device and method based on application of standby steam source
CN112943387A (en) * 2021-04-02 2021-06-11 浙江浙能兰溪发电有限责任公司 Steam source control method and steam source control device

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