CN111335976A - One-key starting method of coal-fired generator set based on steam feed pump starting mode - Google Patents
One-key starting method of coal-fired generator set based on steam feed pump starting mode Download PDFInfo
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- CN111335976A CN111335976A CN202010188530.9A CN202010188530A CN111335976A CN 111335976 A CN111335976 A CN 111335976A CN 202010188530 A CN202010188530 A CN 202010188530A CN 111335976 A CN111335976 A CN 111335976A
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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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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Abstract
The invention discloses a one-key starting method of a coal-fired generator set based on a steam feed pump starting mode, wherein the generator set selects the steam feed pump starting mode, and the method specifically comprises the following steps: the method comprises the steps of starting a circulating water system and a closed cooling water system in sequence, then starting a condensed water system and a lubricating oil system simultaneously, starting a sealed oil system after the lubricating oil system is started, starting a low water adding side system after the condensed water system is started, starting a water feeding flushing system of a deaerator and an auxiliary steam feeding system after the low water adding side system is started, starting static water injection of a water feeding pipeline after the water feeding flushing of the deaerator is finished, starting a shaft seal system after the auxiliary steam feeding system is started, starting a vacuum system after the shaft seal system is started, starting a steam-driven water feeding pump after the vacuum system is started, and starting a deaerator heating system after the static water feeding of the water feeding pipeline and the steam-driven water feeding pump are finished.
Description
Technical Field
The invention belongs to the field of thermal power generation, and relates to a one-key starting method of a coal-fired generator set based on a steam feed pump starting mode.
Background
With the promotion of deep fusion of big data, artificial intelligence and entity economy in China, the industrial technology is promoted to change and optimized and upgraded in a direction mainly attacked by intelligence, and therefore the concept of an intelligent power station is provided in the field of thermal power generation. The essence of the intelligent power station is the high development and deep integration of informatization and intelligent technologies in the field of power generation, and the intelligent power station is embodied in the systematic application of technologies such as big data, Internet of things, visualization, advanced measurement, intelligent control and the like, and is mainly characterized by ubiquitous perception, self-adaptation, intelligent integration and interaction. The technical core of the intelligent power station is information fusion and intelligent power generation technology.
The automatic starting technology of the unit serves as one of key technologies of the intelligent power station, the technology has extremely important significance in research on the technology from the perspective of quick and safe starting of the unit and from the aspect of economic benefits, meanwhile, reference is provided for application of the automatic starting technology of the intelligent power station, and the technology has important significance in promoting development of the intelligent power station.
However, the automatic starting technology in China cannot be effectively applied to the field of thermal power generation, and is limited to the construction time of capital construction in the new period of a unit and the production pressure of the unit after the unit is put into commercial operation to the greatest extent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a one-key starting method of a coal-fired generator set based on a steam feed pump starting mode, which can realize one-key starting of the coal-fired generator set.
In order to achieve the aim, the one-key starting method of the coal-fired generator set based on the steam feed pump starting mode provided by the invention has the advantages that the generator set selects the steam feed pump starting mode, and the method specifically comprises the following steps:
at the initial stage of starting, circulating water system and closed cooling water system are started in proper order, then condensate system and lubricating oil system are started simultaneously, start sealed oil system after the lubricating oil system starts to accomplish, start low side system of adding water after the condensate system starts to accomplish, start the water washing system on the oxygen-eliminating device and drop into supplementary steam system simultaneously after the side system that waits to add water starts to accomplish, start the static water injection of water supply pipe after waiting to wash the completion of water on the oxygen-eliminating device, start the bearing seal system after waiting to assist the steam system to drop into the completion, start vacuum system after waiting to start the completion of bearing seal system, start the steam-driven water pump after the completion of vacuum system start, start oxygen-eliminating device heating system after waiting to the static water injection of water supply pipe and the.
Further comprising: after the deaerator is heated and put into completion, a boiler water feeding and boiler water draining and exhausting interlock and a steam turbine water draining interlock are started, a boiler cold state cleaning system is started after the boiler is fed with water, an air and smoke system is started after the boiler cold state cleaning is completed, a fire detection cooling fan and a delivery/draught fan are started automatically after the air and smoke system is started, and a unit is prepared to ignite after the fire detection cooling fan is started and completed.
Further comprising: after the ignition preparation of the unit is completed, feeding water and bypasses are automatic, starting a hearth for purging after the water is automatically fed, simultaneously starting a powder making system for preparing and feeding a secondary air door for automatically after the hearth is purged, simultaneously feeding a primary fan for automatically and starting a first powder making system for igniting after the powder making system is prepared, simultaneously starting an automatic boiler temperature rise and pressure rise system and feeding a condenser for temperature reduction control after the first powder making system is ignited, wherein a steam turbine EH oil system, a stator cooling water system, a high-pressure cylinder reverse heating system, a medium-pressure cylinder positive heating system and a steam heater interlayer system are started while hot washing of a boiler is carried out in the automatic boiler temperature rise and pressure rise process.
Further comprising: starting a steam turbine to perform impulse rotation after the boiler is subjected to thermal state flushing, then putting a low heating mode and a 3# high heating mode in a steam turbine medium-speed warming process, starting the boiler to automatically boost in the steam turbine high-speed warming process, starting a second set of pulverizing system after the boiler is boosted, and putting the pulverized coal system into a superheater and a reheater to reduce temperature water automatically after the second set of pulverizing system is started.
Further comprising: and starting the unit for grid connection after the second set of pulverizing system is started, and performing initial load warming and starting automatic cylinder switching after the standby unit is completed for grid connection.
Further comprising: after the automatic cylinder switching is finished, high pressure is put in, meanwhile, a steam source of a main control automatic and oxygen cutting device of the steam turbine is switched to four pumping, fuel main control automatic is put in after the steam turbine main control automatic completion, the load is raised to 25% after the fuel main control automatic completion, the water supply pipeline is started to be switched to the main path for operation after the standby group load is raised to 25%, the water supply pipeline is switched to the main path for operation after the main path operation is completed, the load is raised to 30% cut-dry state operation and simultaneously the denitration system is put in, the third set of powder making system is started after the dry state operation is completed, the load is raised to 50% of the coordinated control system after the third set of powder making system is started, and the combustion-supporting system is started after the coordinated.
The invention has the following beneficial effects:
the one-key starting method of the coal-fired generator set based on the steam feed pump starting mode provided by the invention has the advantages that during the specific operation, in the starting process of the generator set, the flexibility of the starting of the generator set is maximally improved through the mutual independent and mutual correlated organic combination between the auxiliary system of the generator set and the starting system of the generator set, the technical problem that the one-key starting of the coal-fired generator set is difficult to realize is fundamentally solved, the one-key starting of the generator set is more economic than the traditional manual starting mode, and the plant power consumption of the generator set is reduced simultaneously in the starting process; the water consumption and coal consumption indexes of the unit in the starting process are reduced, the misoperation of the unit caused by human reasons in the starting process is fundamentally avoided, and the unit is safer and more energy-saving in the starting process.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the one-key starting method of the coal-fired power generating unit based on the steam feed pump starting mode, which is disclosed by the invention, selects the steam feed pump starting mode, and specifically comprises the following steps:
at the initial stage of starting, circulating water system and closed cooling water system are started in proper order, then condensate system and lubricating oil system are started simultaneously, start sealed oil system after the lubricating oil system starts to accomplish, start low side system of adding water after the condensate system starts to accomplish, start the water washing system on the oxygen-eliminating device and drop into supplementary steam system simultaneously after the side system that waits to add water starts to accomplish, start the static water injection of water supply pipe after waiting to wash the completion of water on the oxygen-eliminating device, start the bearing seal system after waiting to assist the steam system to drop into the completion, start vacuum system after waiting to start the completion of bearing seal system, start the steam-driven water pump after the completion of vacuum system start, start oxygen-eliminating device heating system after waiting to the static water injection of water supply pipe and the.
Further comprising: after the deaerator is heated and put into completion, a boiler water feeding and boiler water draining and exhausting interlock and a steam turbine water draining interlock are started, a boiler cold state cleaning system is started after the boiler is fed with water, an air and smoke system is started after the boiler cold state cleaning is completed, a fire detection cooling fan and a delivery/draught fan are started automatically after the air and smoke system is started, and a unit is prepared to ignite after the fire detection cooling fan is started and completed.
Further comprising: after the ignition preparation of the unit is completed, feeding water and bypasses are automatic, starting a hearth for purging after the water is automatically fed, simultaneously starting a powder making system for preparing and feeding a secondary air door for automatically after the hearth is purged, simultaneously feeding a primary fan for automatically and starting a first powder making system for igniting after the powder making system is prepared, simultaneously starting an automatic boiler temperature rise and pressure rise system and feeding a condenser for temperature reduction control after the first powder making system is ignited, wherein a steam turbine EH oil system, a stator cooling water system, a high-pressure cylinder reverse heating system, a medium-pressure cylinder positive heating system and a steam heater interlayer system are started while hot washing of a boiler is carried out in the automatic boiler temperature rise and pressure rise process.
Further comprising: starting a steam turbine to perform impulse rotation after the boiler is subjected to thermal state flushing, then putting a low heating mode and a 3# high heating mode in a steam turbine medium-speed warming process, starting the boiler to automatically boost in the steam turbine high-speed warming process, starting a second set of pulverizing system after the boiler is boosted, and putting the pulverized coal system into a superheater and a reheater to reduce temperature water automatically after the second set of pulverizing system is started.
Further comprising: and starting the unit for grid connection after the second set of pulverizing system is started, and performing initial load warming and starting automatic cylinder switching after the standby unit is completed for grid connection.
Further comprising: after the automatic cylinder switching is finished, high pressure is put in, meanwhile, a steam source of a main control automatic of the steam feeding machine and an oxygen cutting device is switched to four pumping, after the steam main control automatic completion of the putting in, fuel main control automatic is put in, after the fuel main control automatic completion of the putting in, the load is raised to 25%, after the standby group load is raised to 25%, a water feeding pipeline is started to be switched to a main path for operation, after the water feeding pipeline is switched to the main path for operation, the load is raised to 30% of cut-dry state operation and a denitration system is put in, after the dry state operation is finished, a third set of powder making system is started, after the start of the third set of powder making system is finished, the load is raised to 50% of putting in a coordination control system.
Claims (6)
1. A one-key starting method of a coal-fired generator set based on a steam feed pump starting mode is characterized in that the generator set selects the steam feed pump starting mode, and specifically comprises the following steps:
at the initial stage of starting, circulating water system and closed cooling water system are started in proper order, then condensate system and lubricating oil system are started simultaneously, start sealed oil system after the lubricating oil system starts to accomplish, start low side system of adding water after the condensate system starts to accomplish, start the water washing system on the oxygen-eliminating device and drop into supplementary steam system simultaneously after the side system that waits to add water starts to accomplish, start the static water injection of water supply pipe after waiting to wash the completion of water on the oxygen-eliminating device, start the bearing seal system after waiting to assist the steam system to drop into the completion, start vacuum system after waiting to start the completion of bearing seal system, start the steam-driven water pump after the completion of vacuum system start, start oxygen-eliminating device heating system after waiting to the static water injection of water supply pipe and the.
2. The one-key starting method for the coal-fired power generating unit based on the steam feed pump starting mode as claimed in claim 1, further comprising the following steps of:
after the deaerator is heated and put into completion, a boiler water feeding and boiler water draining and exhausting interlock and a steam turbine water draining interlock are started, a boiler cold state cleaning system is started after the boiler is fed with water, an air and smoke system is started after the boiler cold state cleaning is completed, a fire detection cooling fan and a delivery/draught fan are started automatically after the air and smoke system is started, and a unit is prepared to ignite after the fire detection cooling fan is started and completed.
3. The one-key starting method for the coal-fired power generating unit based on the steam feed pump starting mode as claimed in claim 2, further comprising the following steps of:
after the ignition preparation of the unit is completed, feeding water and bypasses are automatic, starting a hearth for purging after the water is automatically fed, simultaneously starting a powder making system for preparing and feeding a secondary air door for automatically after the hearth is purged, simultaneously feeding a primary fan for automatically and starting a first powder making system for igniting after the powder making system is prepared, simultaneously starting an automatic boiler temperature rise and pressure rise system and feeding a condenser for temperature reduction control after the first powder making system is ignited, wherein a steam turbine EH oil system, a stator cooling water system, a high-pressure cylinder reverse heating system, a medium-pressure cylinder positive heating system and a steam heater interlayer system are started while hot washing of a boiler is carried out in the automatic boiler temperature rise and pressure rise process.
4. The one-key starting method for the coal-fired power generating unit based on the steam feed pump starting mode as claimed in claim 3, further comprising the following steps of:
starting a steam turbine to perform impulse rotation after the boiler is subjected to thermal state flushing, then putting a low heating mode and a 3# high heating mode in a steam turbine medium-speed warming process, starting the boiler to automatically boost in the steam turbine high-speed warming process, starting a second set of pulverizing system after the boiler is boosted, and putting the pulverized coal system into a superheater and a reheater to reduce temperature water automatically after the second set of pulverizing system is started.
5. The one-key starting method for the coal-fired power generating unit based on the steam feed pump starting mode as claimed in claim 4, further comprising the following steps of:
and starting the unit for grid connection after the second set of pulverizing system is started, and performing initial load warming and starting automatic cylinder switching after the standby unit is completed for grid connection.
6. The one-key starting method for the coal-fired power generating unit based on the steam feed pump starting mode according to claim 5, characterized by further comprising the following steps of:
after the automatic cylinder switching is completed, high pressure is put in, meanwhile, the steam source of the automatic aerator is automatically switched in, the oxygen source is automatically switched off, the fuel main control is automatically switched in after the steam generator main control is automatically switched in, after the fuel main control is automatically switched in, the load is raised to 25%, after the standby group load is raised to 25%, the water supply pipeline is started to be switched to the main path for operation, after the water supply pipeline is switched to the main path for operation, the load is raised to 30% and the denitration system is switched in, after the dry operation is completed, the third set of powder making system is started, after the third set of powder making system is started, the load is raised to 50% and the coordination control system is switched in, and after the coordination control system is switched in, the combustion-supporting.
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| CN202010188530.9A CN111335976B (en) | 2020-03-17 | 2020-03-17 | One-key starting method of coal-fired generator set based on steam feed pump starting mode |
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| CN111335976B CN111335976B (en) | 2022-06-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112879890A (en) * | 2021-02-22 | 2021-06-01 | 西安热工研究院有限公司 | Automatic starting control method for whole process of coal-fired unit based on electric water feeding pump |
| CN113007692A (en) * | 2021-02-22 | 2021-06-22 | 西安热工研究院有限公司 | Coal-fired unit whole-process automatic starting control method based on steam-driven water feeding pump |
| CN113565575A (en) * | 2021-08-16 | 2021-10-29 | 京能十堰热电有限公司 | Boiler wall temperature protection assessment and control method for steam pump fault combined electric pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879890A (en) * | 2021-02-22 | 2021-06-01 | 西安热工研究院有限公司 | Automatic starting control method for whole process of coal-fired unit based on electric water feeding pump |
| CN113007692A (en) * | 2021-02-22 | 2021-06-22 | 西安热工研究院有限公司 | Coal-fired unit whole-process automatic starting control method based on steam-driven water feeding pump |
| CN113007692B (en) * | 2021-02-22 | 2022-07-19 | 西安热工研究院有限公司 | Coal-fired unit whole-process automatic starting control method based on steam-driven water-feeding pump |
| CN112879890B (en) * | 2021-02-22 | 2022-08-19 | 西安热工研究院有限公司 | Automatic starting control method for whole process of coal-fired unit based on electric water feeding pump |
| CN113565575A (en) * | 2021-08-16 | 2021-10-29 | 京能十堰热电有限公司 | Boiler wall temperature protection assessment and control method for steam pump fault combined electric pump |
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