CN111335975B - One-key starting method of coal-fired generator set based on starting mode of electric water feed pump - Google Patents
One-key starting method of coal-fired generator set based on starting mode of electric water feed pump Download PDFInfo
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- CN111335975B CN111335975B CN202010187718.1A CN202010187718A CN111335975B CN 111335975 B CN111335975 B CN 111335975B CN 202010187718 A CN202010187718 A CN 202010187718A CN 111335975 B CN111335975 B CN 111335975B
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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
Abstract
The invention discloses a one-key starting method of a coal-fired generator set based on a starting mode of an electric water feed pump.
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 power generating set based on a starting mode of an electric feed pump.
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 power generating unit based on a starting mode of a motor-driven water-feeding pump, which can realize one-key starting of the coal-fired power generating unit.
In order to achieve the purpose, the one-key starting method of the coal-fired generator set based on the starting mode of the electric feed pump, disclosed by the invention, selects the starting mode of the electric feed pump, and specifically comprises the following steps of:
at the initial stage of starting, start circulating water system and closed cooling water system in proper order, then start condensate system and lubricating oil system simultaneously again, treat that lubricating oil system starts sealed oil system after accomplishing, start low water side system that adds in proper order after treating condensate system starts to accomplish, then carry out the oxygen-eliminating device and go up the start of water washing system and the input of supplementary steam system, wait to start the static water injection of water supply pipe and oxygen-eliminating device heating system again in proper order after the oxygen-eliminating device goes up the water washing and accomplishes.
Further comprising: after a deaerator heating system is put into operation, a boiler water feeding and boiler water draining and exhausting interlock and a steam turbine water draining interlock are started at the same time, a boiler cold cleaning system is started to clean the boiler in a cold state after the boiler is fed with water, a shaft seal system and a vacuum system are started in sequence in the boiler cold cleaning process, a wind and smoke system is started after the boiler is cleaned in the cold state, a fire detection cooling fan is started and a delivery/draught fan is automatic after the wind and smoke system is started, and then ignition is prepared after the fire detection cooling fan is started.
Further comprising: after the ignition preparation of the unit is completed, water feeding and bypass automatic feeding and hearth starting purging are sequentially carried out, after the hearth purging is completed, a powder making system is started to prepare, and a secondary air door automatic feeding is carried out simultaneously, after the powder making system is prepared, a primary air fan automatic feeding and a first powder making system starting to ignite are carried out simultaneously, after the first powder making system is ignited, a boiler automatic temperature rise and pressure rise system is started, and meanwhile, a condenser temperature reduction control is put into, 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 is carried out on the boiler in the boiler automatic temperature rise and pressure rise process.
Further comprising: starting a steam turbine to perform impulse rotation after the boiler finishes hot-state impulse, putting low pressure heater and 3# high pressure heater in a steam turbine medium-speed warming process, starting the boiler to automatically boost pressure in the steam turbine high-speed warming process, starting a second set of powder preparation system after the boiler is automatically boosted, and putting superheater and reheater desuperheating water to be automatic after the second set of powder preparation system is started.
Further comprising: and starting the unit for grid connection after the second set of pulverizing system is started, performing initial load warming to start the automatic cylinder switching after the standby set is connected to the grid, starting the steam-driven water feeding pump after the automatic cylinder switching is finished, and starting the load-increasing pump after the steam-driven water feeding pump is started.
Further comprising: after the steam-driven water feeding pump is combined with the pump, the steam source of the steam feeding machine is automatically fed and the oxygen generator is automatically cut off to four times, the fuel main control is automatically fed after the steam feeding machine main control is automatically fed, the load is increased to 25% after the fuel main control is automatically fed, the standby group load is increased to 25%, the water feeding pipeline is started to be switched to the main path to operate, the denitration system is fed when the load is increased to 30% in a dry state, the third set of powder preparation system is started, the load is increased to 50% in a feeding coordination control system, and then the combustion-supporting withdrawing system is started.
The invention has the following beneficial effects:
the one-key starting method of the coal-fired generator set based on the electric water feeding pump starting mode has the advantages that during specific operation, in the starting process of the generator set, the flexibility of the starting of the generator set is improved to the maximum extent through the mutual independent and mutual correlation 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 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 starting mode of the electric feed pump, which is disclosed by the invention, selects the starting mode of the electric feed pump, and specifically comprises the following steps:
at the initial stage of starting, start circulating water system and closed cooling water system in proper order, then start condensate system and lubricating oil system simultaneously again, treat lubricating oil system and start sealed oil system after the completion of starting, treat that condensate system starts to start the low water side system that adds after the completion, then carry out the start of water washing system on the oxygen-eliminating device and supplementary steam system's input, treat that the oxygen-eliminating device is washed the completion back and then start the static water injection of water supply pipe and oxygen-eliminating device heating system in proper order again.
Further comprising: after a deaerator heating system is put into operation, a boiler water feeding and boiler water draining and exhausting interlock and a steam turbine water draining interlock are started at the same time, a boiler cold cleaning system is started to clean the boiler in a cold state after the boiler is fed with water, a shaft seal system and a vacuum system are started in sequence in the boiler cold cleaning process, a wind and smoke system is started after the boiler is cleaned in the cold state, a fire detection cooling fan is started and a delivery/draught fan is automatic after the wind and smoke system is started, and then ignition is prepared after the fire detection cooling fan is started.
Further comprising: after the ignition preparation of the unit is completed, water feeding and bypass automatic blowing and starting of a hearth are sequentially carried out, after the hearth blowing is completed, a coal pulverizing system is started to prepare, and a secondary air door is started automatically, after the coal pulverizing system is prepared, a primary air fan is started automatically, a first set of coal pulverizing system is started to ignite, after the first set of coal pulverizing system ignites, an automatic boiler temperature rising and pressure rising system is started, and meanwhile a condenser temperature reduction control is put into, wherein a steam turbine EH oil system, a stator cooling water system, a high-pressure cylinder reverse heating system, an intermediate 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 rising and pressure rising process.
Further comprising: starting a steam turbine to perform impulse rotation after the boiler finishes hot-state impulse, putting low pressure heater and 3# high pressure heater in a steam turbine medium-speed warming process, starting the boiler to automatically boost pressure in the steam turbine high-speed warming process, starting a second set of powder preparation system after the boiler is automatically boosted, and putting superheater and reheater desuperheating water to be automatic after the second set of powder preparation system is started.
Further comprising: and starting the unit for grid connection after the second set of pulverizing system is started, performing initial load warming to start the automatic cylinder switching after the standby set is connected to the grid, starting the steam-driven water feeding pump after the automatic cylinder switching is finished, and starting the load-increasing pump after the steam-driven water feeding pump is started.
Further comprising: after the steam-driven water feeding pump is combined with the pump, the steam source of the steam feeding machine is automatically fed and the oxygen generator is automatically cut off to four times, the fuel main control is automatically fed after the steam feeding machine main control is automatically fed, the load is increased to 25% after the fuel main control is automatically fed, the standby group load is increased to 25%, the water feeding pipeline is started to be switched to the main path to operate, the denitration system is fed when the load is increased to 30% in a dry state, the third set of powder preparation system is started, the load is increased to 50% in a feeding coordination control system, and then the combustion-supporting withdrawing system is started.
Claims (1)
1. A one-key starting method of a coal-fired generator set based on a starting mode of an electric feed pump is characterized in that the generator set selects the starting mode of the electric feed pump, and the method specifically comprises the following steps:
in the initial starting stage, a circulating water system and a closed cooling water system are started in sequence, then a condensate system and a lubricating oil system are started simultaneously, a sealing oil system is started after the lubricating oil system is started, a low water adding side system is started after the condensate system is started, then starting of a water feeding and flushing system of a deaerator and input of an auxiliary steam system are carried out, and a water feeding pipeline static water injection and deaerator heating system is started in sequence after the deaerator is flushed;
further comprising:
after the deaerator heating system is put into operation, a boiler drainage exhaust interlock and a steam turbine drainage interlock are put into operation while boiler water feeding is started, a boiler cold cleaning system is started to carry out boiler cold cleaning after the boiler water feeding is finished, wherein a shaft seal system and a vacuum system are sequentially started in the boiler cold cleaning process, a smoke system is started after the boiler cold cleaning is finished, a fire detection cooling fan is started and a delivery/draught fan is automatic simultaneously after the smoke system is started, and then ignition is prepared after the fire detection cooling fan is started;
further comprising:
after the ignition preparation of the unit is completed, water feeding and bypass automatic feeding and hearth starting purging are sequentially carried out, after the hearth purging is completed, a powder making system is started to prepare and a secondary air door automatic feeding are simultaneously carried out, after the powder making system is prepared, a primary fan automatic feeding and a first powder making system starting to ignite are simultaneously carried out, after the first powder making system finishes igniting, a boiler automatic temperature rising and boosting system is started, and meanwhile a condenser is fed for temperature reduction control, 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 is carried out on the boiler in the boiler automatic temperature rising and boosting process;
further comprising:
starting a steam turbine to perform impulse rotation after the boiler is subjected to thermal state impulse, putting low pressure heating in the medium-speed warming process of the steam turbine and putting 3# high pressure heating in the medium-speed warming process of the steam turbine in a steam turbine medium-pressure cylinder starting mode, starting the boiler to automatically boost pressure in the high-speed warming process of the steam turbine, starting a second set of powder making system after the boiler is automatically boosted, and putting superheater and reheater desuperheating water to be automatic after the second set of powder making system is started;
further comprising:
starting the unit to be connected to the power after the second set of pulverizing system is started, starting an automatic cylinder switching by initial load warming after the standby set is connected to the power, starting the steam feed pump after the automatic cylinder switching is finished, and starting a load-raising pump after the steam feed pump is started;
further comprising:
after the steam feed pump is started and started, the steam supply of the oxygen supply device is automatically switched off, the main control of the oxygen supply device is automatically switched off to four pumps, after the main control of the steam supply device is automatically switched on, the main control of the fuel is automatically switched on, after the main control of the fuel is automatically switched on, the load is increased to 25%, the load of the standby group is increased to 25%, the water supply pipeline is started to be switched to the main path for operation, then the denitration system is started when the load is increased to 30% in a dry state for operation, the third set of powder preparation system is started, the load is increased to 50% in a coordinated control system, and then the combustion-withdrawing system is started.
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| CN202010187718.1A CN111335975B (en) | 2020-03-17 | 2020-03-17 | One-key starting method of coal-fired generator set based on starting mode of electric water feed pump |
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| CN202010187718.1A CN111335975B (en) | 2020-03-17 | 2020-03-17 | One-key starting method of coal-fired generator set based on starting mode of electric water feed pump |
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| CN111335975B true CN111335975B (en) | 2022-06-10 |
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