CN113090546A - Indirect air cooling unit electric preposed feed pump system based on double-fed system - Google Patents
Indirect air cooling unit electric preposed feed pump system based on double-fed system Download PDFInfo
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- CN113090546A CN113090546A CN202110375087.0A CN202110375087A CN113090546A CN 113090546 A CN113090546 A CN 113090546A CN 202110375087 A CN202110375087 A CN 202110375087A CN 113090546 A CN113090546 A CN 113090546A
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- 238000001816 cooling Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- 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
- F01D17/10—Final actuators
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Turbines (AREA)
Abstract
An electric preposed feed pump system of an indirect air cooling unit based on a double-fed system comprises a steel structure indirect air cooling tower and the like. The invention changes the motor of the electric preposed water feeding pump into a double-fed motor, when the working condition of the unit changes, under the condition of meeting the safe operation requirement of the water feeding pump, the rotating speed of the electric preposed water feeding pump is adjusted through the double-fed motor, and the operation working condition of the electric preposed water feeding pump is adjusted; when the speed regulation function of the double-fed motor fails, the double-fed motor operates at power frequency, and the electric preposed feed water pump operates at a temporary constant speed. The speed regulation range of the double-fed motor is set according to the actual running accurate rotating speed range of the electric preposed water feeding pump, but not 0-100%, so that the waste of regulation allowance is avoided, and the manufacturing cost is low. Through the implementation of the electric preposed feed pump system of the indirect air cooling unit based on the double-fed system, all operation requirements of the electric preposed feed pump can be met, the regulation efficiency and the regulation safety of the electric preposed feed pump under the future high-frequency wide-load application scene are improved, and the energy-saving potential is huge.
Description
Technical Field
The invention belongs to the field of power station boilers and steam turbine systems, and particularly relates to an electric preposed feed water pump system of an indirect air cooling unit based on a double-fed system.
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 installed capacity in service and under construction is the first in the world. New energy sources such as wind power and photovoltaic power provide a large amount of clean power for people, but on the other hand, the randomness and instability of generated output of the new energy sources also bring great challenges to the safe operation and power supply guarantee of a power system. From the current situation, the adjustment capability of the power system in China is difficult to completely adapt to the requirement of large-scale development and consumption of new energy, and the problems of wind abandonment, light abandonment and water abandonment are severe in some areas. In order to excavate the peak regulation potential of a thermal power generating unit, improve the thermal power operation flexibility of China and improve the new energy consumption capacity, the thermal power generating unit needs to operate under the working condition of wide-load and high-frequency load change, the power consumption rate of main auxiliary equipment of a power plant, such as a water pump, a fan and the like, is greatly improved, according to field test data, when the peak regulation of the unit is up to 30% of load, the power consumption rate of the plant is increased to about 10%, and the power supply efficiency is obviously reduced.
The indirect air cooling system has become one of the mainstream techniques for cooling the exhaust steam of the steam turbine of the thermal power generating unit in northern China in recent years due to the advantages of excellent water-saving performance, flexible system adjustment and the like. The electric preposed feed water pump of the indirect air cooling unit boiler has higher driving power and is an important electric energy consumer in a power plant. At present, an electric preposed water feeding pump of an indirect air cooling unit mostly runs at a constant speed, and under the variable working condition of the unit, the electric preposed water feeding pump has low running efficiency and poor economical efficiency, and is difficult to meet the running requirement of frequent adjustment of the indirect air cooling unit under the application scene of high frequency and wide load in the future. The rationality of the driving mode and the speed regulating mode of the electric preposed feed water pump is very critical to the economical efficiency of the operation of the indirect air cooling unit under the future high-frequency wide-load scene.
Disclosure of Invention
The invention aims to provide an electric preposed feed water pump system of an indirect air cooling unit based on a double-fed system, which can meet the operation requirements of all working conditions of an electric preposed feed water pump, reduce the plant power consumption rate, improve the regulation efficiency and the regulation safety of the electric preposed feed water pump in the future high-frequency wide-load application scene and have huge energy-saving potential.
In order to achieve the purpose, the invention adopts the technical scheme that:
a double-fed system-based electric preposed feed pump system of an indirect air cooling unit comprises a steam turbine, a generator, a condenser, a small steam turbine, a feed pump, an electric preposed feed pump, a double-fed motor, a steel structure indirect air cooling tower and a circulating water pump;
the generator is coaxially connected with the steam turbine, the small steam turbine is coaxially connected with the water feeding pump, and the double-fed motor is coaxially connected with the electric preposed water feeding pump; the exhaust steam outlet of the steam turbine is connected to the steam inlet of the condenser, the first exhaust steam outlet of the steam turbine is connected to the steam inlet of the small steam turbine, the exhaust steam outlet of the small steam turbine is connected to the steam inlet of the condenser, the condensed water outlet of the condenser is connected to the inlet of the feed water pump through the electric preposed feed water pump, and the outlet of the feed water pump is connected to the heating system;
the circulating water outlet of the steel structure indirect air cooling tower is connected to the circulating water inlet of the condenser, and the circulating water outlet of the condenser is connected to the circulating water inlet of the steel structure indirect air cooling tower through the circulating water pump.
The invention has the further improvement that a steam inlet of the small steam turbine is provided with a steam inlet regulating valve of the small steam turbine;
and a small steam turbine exhaust regulating valve is arranged at the exhaust outlet of the small steam turbine.
The invention is further improved in that the inlet and the outlet of the feed pump are respectively provided with a feed pump water inlet valve and a feed pump water outlet valve.
The invention is further improved in that the inlet and the outlet of the electric preposed water feeding pump are respectively provided with a preposed water feeding pump water inlet valve and a preposed water feeding pump water outlet valve.
The invention is further improved in that a condenser water inlet valve and a condenser water outlet valve are respectively arranged at a circulating water inlet and a circulating water outlet of the condenser.
The invention is further improved in that the inlet and the outlet of the circulating water pump are respectively provided with a circulating water pump inlet valve and a circulating water pump outlet valve.
The invention is further improved in that the rotating speed of the electric preposed feed water pump is adjusted through the double feed motor under the condition of meeting the requirement of safe operation of the feed water pump, and the operation condition of the electric preposed feed water pump is adjusted.
The invention is further improved in that the driving mode of the electric preposed water feeding pump is based on electric driving of a double-fed system, when the speed regulating function of the double-fed motor fails, the double-fed motor operates at power frequency, and the electric preposed water feeding pump operates at a temporary constant speed.
The invention is further improved in that the speed regulation range of the double-fed motor is set according to the accurate rotating speed range required by the actual operation of the electric preposed feed water pump.
The invention has the further improvement that after the steam discharged by the steam turbine is cooled and condensed by the condenser, the steam is boosted by the electric preposed feed pump and the feed pump and then is heated by the heating system;
and circulating water absorbing heat in the condenser is conveyed to the steel structure indirect air cooling tower through the circulating water pump to be indirectly heat-exchanged and cooled with air, and then enters the condenser again to cool the steam turbine and the steam discharge of the small steam turbine.
Compared with the prior art, the invention changes the motor of the electric preposed feed water pump of the indirect air cooling unit into a double-fed motor, when the working condition of the unit changes, under the condition of meeting the safe operation requirement of the feed water pump, the rotating speed of the electric preposed feed water pump is adjusted through the double-fed motor, and the operation working condition of the electric preposed feed water pump is adjusted; when the speed regulation function of the double-fed motor fails, the double-fed motor operates at power frequency, and the electric preposed feed water pump operates at a temporary constant speed. The speed regulation range of the double-fed motor is set according to the accurate rotating speed range required by the actual operation of the electric preposed water feeding pump, but not 0-100%, so that the waste of regulation allowance is avoided, and the manufacturing cost is low. The invention has the beneficial effects that:
(1) the electric preposed feed pump of the indirect air cooling unit boiler can meet all running states, the adjusting efficiency and the adjusting safety of the electric preposed feed pump under the future high-frequency wide-load application scene are improved, and the electric preposed feed pump has huge energy-saving potential.
(2) The double-fed motor can directly adjust the rotating speed of the electric preposed feed pump of the indirect air cooling unit boiler, the non-variable-frequency simple fine continuous speed regulation of the electric preposed feed pump of the indirect air cooling unit boiler can be realized, a hydraulic coupler or a variable-frequency adjusting system is omitted, and the adjusting efficiency is high.
(3) Compared with hydraulic coupler adjustment or variable frequency adjustment, the double-fed system has the advantages of small occupied area, low manufacturing cost and high reliability.
(4) The system is flexible in operation, simple in operation and strong in usability.
Drawings
FIG. 1 is a schematic diagram of an electric preposed feed water pump system of an indirect air cooling unit based on a double-fed system.
Description of reference numerals:
1. the system comprises a steam turbine, 2, a generator, 3, a condenser, 4, a small steam turbine steam inlet regulating valve, 5, a small steam turbine, 6, a small steam turbine steam exhaust regulating valve, 7, a water supply pump water outlet valve, 8, a water supply pump, 9, a water supply pump water inlet valve, 10, a preposed water supply pump water outlet valve, 11, an electric preposed water supply pump, 12, a preposed water supply pump water inlet valve, 13, a double-fed motor, 14, a steam turbine steam inlet regulating valve, 15, a condenser water inlet valve, 16, a condenser water outlet valve, 17, a steel structure indirect air cooling tower, 18, a circulating water pump water inlet valve, 19, a circulating water pump, 20 and a circulating water pump water outlet valve.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation and are not intended to limit the present invention.
As shown in fig. 1, the electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system provided by the invention comprises a steam turbine 1, a generator 2, a condenser 3, a small steam turbine 5, a feed water pump 8, an electric preposed feed water pump 11, a double-fed motor 13, a steel structure indirect air cooling tower 17 and a circulating water pump 19; the generator 2 is coaxially connected with the steam turbine 1, the small steam turbine 5 is coaxially connected with the water feeding pump 8, and the double-fed motor 13 is coaxially connected with the electric preposed water feeding pump 11; an exhaust steam outlet of the steam turbine 1 is connected to a steam inlet of the condenser 3, a first exhaust steam outlet of the steam turbine 1 is connected to a steam inlet of the small steam turbine 5, an exhaust steam outlet of the small steam turbine 5 is connected to a steam inlet of the condenser 3, a condensed water outlet of the condenser 3 is connected to an inlet of the feed water pump 8 through the electric preposed feed water pump 11, and an outlet of the feed water pump 8 is connected to a heating system; the circulating water outlet of the steel structure indirect air cooling tower 17 is connected to the circulating water inlet of the condenser 3, and the circulating water outlet of the condenser 3 is connected to the circulating water inlet of the steel structure indirect air cooling tower 17 through the circulating water pump 19.
Wherein, a steam inlet of the small steam turbine 5 is provided with a small steam turbine steam inlet governing valve 4; and a small turbine exhaust steam adjusting valve 6 is arranged at an exhaust steam outlet of the small turbine 5. The inlet and outlet of the feed pump 8 are respectively provided with a feed pump inlet valve 9 and a feed pump outlet valve 7. The inlet and the outlet of the electric prepositive water feeding pump 11 are respectively provided with a prepositive water feeding pump inlet valve 12 and a prepositive water feeding pump outlet valve 10. And a condenser water inlet valve 15 and a condenser water outlet valve 16 are respectively arranged at the circulating water inlet and the circulating water outlet of the condenser 3. The inlet and outlet of the circulating water pump 19 are respectively provided with a circulating water pump inlet valve 18 and a circulating water pump outlet valve 20.
Working example 1
In some indirect air cooling unit provided with an electric preposed water feeding pump, the electric preposed water feeding pump is driven by a motor and runs at a constant speed, and the economic running of the unit is seriously influenced under the application background of frequent adjustment. The motor of the electric preposed water feeding pump is changed into a double-fed motor, when the working condition of a unit changes, under the condition of meeting the safe operation requirement of the water feeding pump, the rotating speed of the electric preposed water feeding pump is adjusted through the double-fed motor, and the operation working condition of the electric preposed water feeding pump is adjusted; when the speed regulation function of the double-fed motor fails, the double-fed motor operates at power frequency, and the electric preposed feed water pump operates at a temporary constant speed. The speed regulation range of the double-fed motor is set according to the accurate rotating speed range required by the actual operation of the electric preposed water feeding pump, but not 0-100%, so that the waste of regulation allowance is avoided, and the manufacturing cost is low.
The electric preposed feed pump system of the indirect air cooling unit based on the double-fed system is flexible in operation, simple in operation, strong in availability and high in reliability.
The operation mode of the electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system.
1. When the speed regulation function of the double-fed system is normal, the unit operates under variable working conditions, and under the condition that the safe operation requirement of the feed pump 8 is met, the rotating speed of the electric preposed feed pump 11 is adjusted through the double-fed motor 13, and the operation working condition of the electric preposed feed pump 11 is adjusted.
2. When the speed regulation function of the double-fed system fails, the double-fed motor 13 operates at power frequency, and the electric preposed feed water pump 11 operates at a temporary constant speed.
Through the implementation of the electric preposed feed pump system of the indirect air cooling unit based on the double-fed system, all operation requirements of the electric preposed feed pump can be met, the regulation efficiency and the regulation safety of the electric preposed feed pump under the future high-frequency wide-load application scene are improved, and the electric preposed feed pump has huge energy-saving potential.
Claims (10)
1. An electric preposed feed water pump system of an indirect air cooling unit based on a double-fed system is characterized by comprising a steam turbine (1), a generator (2), a condenser (3), a small steam turbine (5), a feed water pump (8), an electric preposed feed water pump (11), a double-fed motor (13), a steel structure indirect air cooling tower (17) and a circulating water pump (19);
the generator (2) is coaxially connected with the steam turbine (1), the small steam turbine (5) is coaxially connected with the water feeding pump (8), and the double-fed motor (13) is coaxially connected with the electric preposed water feeding pump (11); an exhaust steam outlet of the steam turbine (1) is connected to a steam inlet of the condenser (3), a first exhaust steam outlet of the steam turbine (1) is connected to a steam inlet of the small steam turbine (5), an exhaust steam outlet of the small steam turbine (5) is connected to a steam inlet of the condenser (3), a condensed water outlet of the condenser (3) is connected to an inlet of a water feeding pump (8) through an electric preposed water feeding pump (11), and an outlet of the water feeding pump (8) is connected to a heating system;
the circulating water outlet of the steel structure indirect air cooling tower (17) is connected to the circulating water inlet of the condenser (3), and the circulating water outlet of the condenser (3) is connected to the circulating water inlet of the steel structure indirect air cooling tower (17) through the circulating water pump (19).
2. The electric preposed feed water pump system of the indirect air cooling unit based on the doubly-fed system as claimed in claim 1, wherein a small turbine steam inlet adjusting valve (4) is arranged at a steam inlet of the small turbine (5);
and a small turbine exhaust steam adjusting valve (6) is arranged at an exhaust steam outlet of the small turbine (5).
3. The electric preposed feed pump system of the indirect air cooling unit based on the doubly-fed system as claimed in claim 1, wherein the inlet and outlet of the feed pump (8) are respectively provided with a feed pump inlet valve (9) and a feed pump outlet valve (7).
4. The electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, wherein the inlet and outlet of the electric preposed feed water pump (11) are respectively provided with a preposed feed water pump inlet valve (12) and a preposed feed water pump outlet valve (10).
5. The electric preposed feed water pump system of the indirect air cooling unit based on the doubly-fed system as claimed in claim 1, wherein a condenser inlet valve (15) and a condenser outlet valve (16) are respectively arranged at a circulating water inlet and a circulating water outlet of the condenser (3).
6. The electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, wherein the inlet and outlet of the circulating water pump (19) are respectively provided with a circulating water pump inlet valve (18) and a circulating water pump outlet valve (20).
7. The electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, characterized in that under the condition that the requirement of safe operation of the feed water pump (8) is met, the rotating speed of the electric preposed feed water pump (11) is adjusted through the double-fed motor (13), and the operation condition of the electric preposed feed water pump (11) is adjusted.
8. The electric pre-feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, wherein the electric pre-feed water pump (11) is driven by electric power based on the double-fed system, when the speed regulation function of the double-fed motor (13) fails, the double-fed motor (13) operates at power frequency, and the electric pre-feed water pump (11) operates at a temporary constant speed.
9. The electric pre-feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, characterized in that the speed regulation range of the double-fed motor (13) is set according to the precise rotating speed range required by the actual operation of the electric pre-feed water pump (11).
10. The electric preposed feed water pump system of the indirect air cooling unit based on the double-fed system as claimed in claim 1, wherein the steam discharged from the steam turbine (1) is cooled and condensed in the condenser (3), and then is boosted by the electric preposed feed water pump (11) and the feed water pump (8) to be heated by the heating system;
circulating water absorbing heat in the condenser (3) is conveyed into the steel structure indirect air cooling tower (17) through the circulating water pump (19) to be indirectly subjected to heat exchange with air for cooling, and then enters the condenser (3) again to cool the exhaust steam of the steam turbine (1) and the small steam turbine (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375087.0A CN113090546A (en) | 2021-04-08 | 2021-04-08 | Indirect air cooling unit electric preposed feed pump system based on double-fed system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110375087.0A CN113090546A (en) | 2021-04-08 | 2021-04-08 | Indirect air cooling unit electric preposed feed pump system based on double-fed system |
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| CN113090546A true CN113090546A (en) | 2021-07-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858163U (en) * | 2010-07-15 | 2011-06-08 | 吴志祥 | Power plant large-scale unit boiler feed pump novel main shaft driving system |
| CN202851324U (en) * | 2012-10-16 | 2013-04-03 | 湖南大唐先一能源管理有限公司 | Ensemble speed adjusting device for motor-driven feed pump and booster pump |
| CN110043439A (en) * | 2019-04-02 | 2019-07-23 | 南通常安能源有限公司 | A kind of steam feed pump system and method |
| CN110285406A (en) * | 2019-07-19 | 2019-09-27 | 西安交通大学 | A kind of Power Plant Feedwater pump hierarchical arrangement system |
| CN111879168A (en) * | 2020-08-19 | 2020-11-03 | 中国电力工程顾问集团华北电力设计院有限公司 | Air cooling coupling operation system arrangement of steam-electric double-drive feed pump of thermal power plant and control method thereof |
-
2021
- 2021-04-08 CN CN202110375087.0A patent/CN113090546A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858163U (en) * | 2010-07-15 | 2011-06-08 | 吴志祥 | Power plant large-scale unit boiler feed pump novel main shaft driving system |
| CN202851324U (en) * | 2012-10-16 | 2013-04-03 | 湖南大唐先一能源管理有限公司 | Ensemble speed adjusting device for motor-driven feed pump and booster pump |
| CN110043439A (en) * | 2019-04-02 | 2019-07-23 | 南通常安能源有限公司 | A kind of steam feed pump system and method |
| CN110285406A (en) * | 2019-07-19 | 2019-09-27 | 西安交通大学 | A kind of Power Plant Feedwater pump hierarchical arrangement system |
| CN111879168A (en) * | 2020-08-19 | 2020-11-03 | 中国电力工程顾问集团华北电力设计院有限公司 | Air cooling coupling operation system arrangement of steam-electric double-drive feed pump of thermal power plant and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李琼: "高压绕线转子无刷双馈电动机变频调速***研究", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》 * |
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Application publication date: 20210709 |