CN104564188A - Full-automatic control method and full-automatic control system for cement waste heat power generation station - Google Patents
Full-automatic control method and full-automatic control system for cement waste heat power generation station Download PDFInfo
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- 239000004568 cement Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002918 waste heat Substances 0.000 title abstract description 3
- 238000010248 power generation Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000000779 smoke Substances 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010977 unit operation Methods 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 37
- 239000007789 gas Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention provides a full-automatic control method and a full-automatic control system for a cement waste heat power generation station. A push-start button is arranged in a central control room, and a compressed air system, a chemical water system, a circulating water system, an oil system, a condensate feeding system, a boiler deashing system, a boiler smoke system, a vacuumizing system, a large bypass system, a steam turbine system and a grid connection system are sequentially started to guarantee safety and stability in operation of the system. By arrangement of the push-start button in the central control room, unit operation maintenance personnel can be reduced, and simplicity in operation is achieved; only after each system is in safe and stable operation, the next system is allowed to start, and accordingly system safety is improved, fault detection and elimination efficiency is improved, and a unit in operation can be kept close to a most economic point to increase economic benefits.
Description
Technical field
The present invention relates to a kind of cement afterheat generation station start & shutdown through one key and unattended control method for fully automatic and system, be specifically related to a kind of cement afterheat generation station control method for fully automatic and system.
Background technique
China is the big country of world's cement production and consumption, as far back as in April, 2006, the departments such as National Development and Reform Committee have formulated " the some suggestions about accelerating cement industry structural adjustment ", wherein clear stipulaties cement production line auxiliary construction cogeneration station.According to Chinese Electricity Monitoring Commission, end in December, 2012, the cement kiln low-temperature cogeneration unit that current China builds operation reaches 700 multiple stage covers, electric motor power more than 580 ten thousand kilowatts, annual electricity generating capacity more than 350 hundred million degree.
According to the automatic control level at present cogeneration station, the standard configuration at a cogeneration station is 18 people, operating mechanism is that Fourth Shift three falls, wherein manage 2 people (head of a station hold concurrently engineering engineer, electric meter engineer), operation and maintenance person 16 people (steam turbine 4 people, change water 4 people, boiler 4 people, electric 4 people).If adopt full automatic control system in the operation of Waste Heat Power Station, full factory can be reduced to 4 people to 6 people, as fully visible, builds up cement afterheat generation station full-automatic control system and uses full-automatic control system to producing huge social economic benefit.
Summary of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of cement afterheat generation station control method for fully automatic and system, in the safety and economic operation situation ensureing cogeneration unit, unit operation maintenance personnel and Material Cost can be reduced, improve the economic benefit of unit.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of cement afterheat generation station control method for fully automatic, it is characterized in that: one key is set at the central control chamber of cement afterheat generation station system and starts, according to compressed air system, the sequence starting changing water system, circulation, oil system, water of condensation water supply system, boiler ash removal system, boiler smoke wind system, pumped vacuum systems, large bypath system, turbine system and grid-connected system, fault is there is, until just next step can be started after fixing a breakdown in step by step; When all normal startup optimization of all systems, the operation of each system maintains near the best operating point that arranges separately, and its concrete steps are as follows:
1) start compressed air system: after central control chamber sends log-on message, the air compressor in compressed air system starts;
2) until step 1) instruction to complete and after feeding back to central control chamber, automatic startup water system: change between waterwheel and automatically identify whether start and stop raw water pump according to water level in raw water box, and whether reach setting value according to the water level of circulating water pool and automatically identify whether start and stop circulating water pool feed water pump; After water level meets the demands, pure water device system processed starts, and meets the water level requirement of sweet-water tank;
3) reach after in claimed range until sweet-water tank water level, start circulation: circulating water pump inlet valve standard-sized sheet, the import and export mortor operated valve of ON cycle water pump and outlet electric valve, vapour condenser and cooling tower inlet valve, then open frequency conversion cooling blower, oil cooler, generator and air cooler of generator;
4) oil system is started: automatically identify whether main fuel tank liquid level reaches setting value, automatically starts high pressure oil pump after reaching setting value; As high pressure oil pump oil pressure > 1.7MPa and lubrication pressure >=0.055MPa, open jacking(oil) pump; As apical axis oil pressure > 9.5MPa, open disk vehicle motor, as rotating speed >=30r/min after red switch, automatic stop turning motor; As rotating speed >=210r/min, jacking(oil) pump automatic stop, as rotating speed >=2980r/min, high pressure oil pump stops; As high pressure oil pressure < 1.7Mpa, high pressure oil pump is from opening;
5) start water of condensation water supply system: automatically identify condenser hotwell water level, as water level >=600mm, condensate pump starts;
6) boiler ash removal system starts: start machine for zipper, Star-like unloader and rapping apparatus respectively, and level-sensing device inspection verification starts;
7) boiler smoke wind system is opened: boiler bypass air door, export the breeze door, import air door are all opened, in increasing temperature and pressure process, progressively turn down bypass air door, open drain valve and steam turbine admission electric valve in air-out tube valve, super-heater exit case separation valve door, main steam pipe, gas-distributing cylinder steam inlet valve, main building;
8) when step 7) in main steam pressure >=0.8MPa time, drop into pumped vacuum systems: auxiliary vapor extractor admission electricity valve is opened, vapour condenser is opened to auxiliary exhaust mortor operated valve, as degree of vacuum >=-45Kpa, input shaft seal steam supply system, unlatching surge tank row vapour condenser is hydrophobic, initial steam enters surge tank separating valve; Surge tank temperature >=105 DEG C, gland sealing valve, gland heater induced draft fan before and after opening, drop into Multi-level water sealing device; As degree of vacuum >=-80KPa, main vapor extractor admission electricity valve is opened, and then vapour condenser to main exhaust mortor operated valve leaves, and closes auxiliary exhaust mortor operated valve, closes auxiliary vapor extractor admission electricity valve; Drop into supplementary equipment and vacuum system interlocking, when degree of vacuum >=-80KPa opens auxiliary vapor extractor, degree of vacuum≤-90KPa closes down auxiliary vapor extractor;
9) in step 7) in, the large bypath system of main steam is full-gear always, main steam manual isolation valve is opened, main steam pneumatic control valve and main steam pressure≤1.4MPa after normal, whether the cooling water manually operated valve checking large bypath system is open mode, closes along road drain valve and boiler emergent evacuation valve; As degree of vacuum >=-75KPa, large bypath system of stopping using, come into operation as degree of vacuum≤-80KPa large bypath system again;
10) turbine system is started working: as main steam temperature >=280 DEG C and main steam pressure >=0.9MPa, steam turbine automatic hanging lock, high-voltage safety oil is set up, automatic main throttle valve both sides standard-sized sheet, speed control system touches operation button automatically, speed control system divides cold conditions, warm state, hot three kinds of states by detection cylinder wall temperature, is automatically raised to 3000r/min;
11) grid-connected system starts grid-connected: step 10) in turbine speed when reaching 3000r/min, signal provides, high pressure contact cabinet, excitation system signal, generator signal, insulation test result is normal, after above-mentioned work completes, excitation system starts automatically, after generator unit stator voltage equals 10000V, grid-connected system self-starting: generator outlet side and power station bus bar side voltage detected, frequency, when phase angle is identical, the grid-connected transmission of electricity of automatic closing, close described large bypath system, main steam increasing temperature and pressure, load >=1000KW, main steam pressure >=1.30MPa, drop into above-mentioned every interlocking protective device (electricity step by step, instrument) and speed control system, according to main steam pressure Load adjustment device, main steam pressure equals 1.30MPa fixed pressure operation,
Described step 1) air compressor self arranges pressing force threshold point, pressure≤0.6MPa from opening, pressure >=0.8MPa automatic stop.
Described step 2) water level in raw water box requires as 2.2m≤water level≤3.5m; The water level settings value of circulating water pool is 1.8m≤water level≤3.5m; The water level of sweet-water tank requires as 1.0m≤water level≤4.5m.
Described step 4) in, if oil temperature is too low or rotor may have flexure, step 4 can be opened in advance); The setting value of main fuel tank liquid level is 1.5m.
Described step 7), as main steam pressure >=0.6MPa, close air-out tube valve, drop into interlocking; As 1.5MPa≤drum pressure≤1.7MPa, close interlocking.
Described step 8), after auxiliary vapor extractor admission electricity valve standard-sized sheet 3s, vapour condenser to auxiliary exhaust mortor operated valve leaves; After main vapor extractor admission electricity valve standard-sized sheet 3s, vapour condenser to main exhaust mortor operated valve leaves; After auxiliary exhaust mortor operated valve complete shut-down 3s, close auxiliary vapor extractor admission electricity valve.
Described step 9), main steam pneumatic control valve and main steam pressure≤1.0Mpa, be beneficial to drain recovery.
After having started; the system at cement afterheat generation station can be run automatically, and when Operational Limits off-design value, system can adjust according to pre-set program; if monitor control index exceedes limit value, automatically can carry out shutdown according to the reverse-order of setting up procedure and carry out protective system.
A system for cement afterheat generation station control method for fully automatic, comprises compressed air system, change water system, circulation, oil system, water of condensation water supply system, boiler ash removal system, boiler smoke wind system, pumped vacuum systems, large bypath system, turbine system grid-connected system and electrical protection systems.
The present invention is on the basis that the normal person's work point step in conjunction with cement afterheat generation station starts, adopt automatic control technology, full-automatic interlocking arranged to logical relation wherein and automatically controls, one key start button can be set at central control chamber, reduce unit operation maintenance personnel and Material Cost, simple to operate; Start with time-division system, after only having each security of system stable operation, next system is just allowed to start, not only enhance the Security of system, make fault discovery and get rid of efficiency to improve, and unit can be made to maintain near most economical some when running, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is the inventive method flow chart.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Cement afterheat generation station full-automatic control system can be divided into compressed air system 1 according to control object, change water system 2, circulation 3, oil system 4, water of condensation water supply system 5, boiler ash removal system 6, boiler smoke wind system 7, pumped vacuum systems 8, large bypath system 9, turbine system 10 and grid-connected system 11.
Compressed air system 1 provides gas for full factory pneumatic valve, instrument; Change water system 2 to purify waste water for unit provides; Circulation 3 provides cooling water for unit; Oil system 4 controls oil and lubricating oil system for steam turbine provides; Water of condensation water supply system 5 is that the draining of vapour condenser feeds the system of boiler after boosting; Boiler ash removal system 6 is boiler heating surface ash disposal and transporting system; Boiler smoke wind system 7 is the hot air duct system of exhaust heat boiler; Pumped vacuum systems 8 is for controlling condenser vacuum system; Large bypath system 9 is steam turbine emergency safety isolated system; Turbine system 10 is the vapour system of steam turbine; Grid-connected system 11 is the electric control system of unit.
As shown in Figure 1, start as to arrange a key start button at central control chamber, press during startup, unit according to compressed air system 1, change water system 2, circulation 3, oil system 4, water of condensation water supply system 5, boiler ash removal system 6, boiler smoke wind system 7, pumped vacuum systems 8, large bypath system 9, turbine system 10 and grid-connected system 11 sequence starting, last unit safety stable operation.
The first step is for starting compressed air system 1, and after middle control sends unit starting information, the air compressor in compressed air system starts to start, between main building gas holder, boiler implosion gas holder, change waterwheel, gas holder provides pressurized air.Air compressor itself arranges pressing force threshold point, air compressor at≤0.6MPa from opening, >=0.8MPa automatic stop.Wherein, main building gas holder provides pressurized gas for pneumatic valve, instrument in main building; The pneumatic valve that boiler implosion gas holder is boiler body, instrument provide pressurized gas; Changing gas holder between waterwheel is change the backwash of pneumatic valve, instrument and more medium filter, activated carbon filter in waterwheel and the cleaning of Ar ion mixing exchanger provides pressurized gas.
After all instructions of the first step complete and feed back to central control chamber, automatically perform startupization water system 2 instruction.Change between waterwheel and automatically identify whether to start or stop raw water pump according to water level in raw water box (2.2m≤water level≤3.5m), and whether reach setting value (1.8m≤water level≤3.5m) according to the water level of circulating water pool and automatically identify whether to start circulating water pool feed water pump, after water level meets the demands, pure water device system processed starts, and requires (1.0m≤water level≤4.5m) with the water level meeting sweet-water tank.
Until sweet-water tank water level after in claimed range, system enters circulation 3 start-up routine automatically, after circulation 3 receives actuating signal, by circulating water pump inlet valve standard-sized sheet, ON cycle water pump and outlet electric valve, the import and export mortor operated valve of vapour condenser left and right side, cooling tower inlet valve, then open frequency conversion cooling blower, the cooling water of oil cooler, generator and air cooler of generator is opened.
Circulation starts the oil system 4 starting Turbo-generator Set after starting, if oil temperature is too low and rotor has flexure, can open native system in advance, to improve oily Gentle jiggering d-axis.After native system receives actuating signal, automatically identify whether main fuel tank liquid level reaches setting value (setting value >=1,5m), reaches rear automatic startup high pressure oil pump.As high pressure oil pump oil pressure > 1.7MPa and lubrication pressure >=0.055MPa, open jacking(oil) pump; As apical axis oil pressure > 9.5MPa, open disk vehicle motor, as rotating speed >=30r/min after red switch, automatic stop turning motor; Rotating speed >=210r/min, jacking(oil) pump automatic stop, rotating speed >=2980r/min, high pressure oil pump stops (dropping into interlocking); High pressure oil pressure < 1.7MPa is from opening high pressure oil pump.
After oil system 4 has started, start water of condensation water supply system 5, automatically identify that condenser hotwell water level is as water level >=600mm, condensate pump starts; According to deaerator level and steam water-level, high pressure water pump (frequency conversion) start and stop only;
After said system is ready, the thermal source of boiler starts to prepare to start, and boiler ash removal system 6 starts, and is specially startup machine for zipper, starts Star-like unloader, rapping apparatus, level-sensing device inspection verification beginning subsequently.
Until boiler ash removal system 6 normally run and collecting ash in reasonable level time, open boiler smoke wind system 7.In boiler heating boosting heating coil process, boiler bypass air door, export the breeze door, import air door are all opened, bypass air door is progressively turned down in increasing temperature and pressure process, now open air-out tube valve, open super-heater exit case separation valve door, open the hydrophobic of main steam pipe on the way, open gas-distributing cylinder steam inlet valve, open drain valve in main building, open steam turbine admission electric valve, as main steam pressure >=0.6MPa, close air-out tube valve, drop into interlocking (closing interlocking when 1.5MPa≤drum pressure≤1.7MPa).
Unit prepares to enter the red switch stage, when above-mentioned heating coil process proceeds to main steam pressure >=0.8MPa, drops into pumped vacuum systems 8.Auxiliary vapor extractor admission electricity valve is opened (after standard-sized sheet 3s), and vapour condenser to auxiliary exhaust mortor operated valve leaves, and as degree of vacuum >=-45Kpa, drops into shaft seal steam supply system, opens surge tank row vapour condenser hydrophobic, opens initial steam and enter surge tank separating valve; Surge tank temperature >=105 DEG C, gland sealing valve before and after opening, opens gland heater induced draft fan (the using and the reserved), drops into Multi-level water sealing device; As degree of vacuum >=-80KPa, main vapor extractor admission electricity valve is opened, and then vapour condenser to main exhaust mortor operated valve leaves, and closes auxiliary exhaust mortor operated valve, closes auxiliary vapor extractor admission electricity valve; Drop into supplementary equipment and vacuum system interlocking, when degree of vacuum >=-80KPa opens auxiliary vapor extractor, degree of vacuum≤-90KPa closes down auxiliary vapor extractor.
In heating coil process, large bypath system 9 is be full-gear always.Main steam manual isolation valve is opened, and main steam pneumatic control valve and main steam pressure≤1.0MPa, be beneficial to drain recovery; Main steam pneumatic control valve and main steam pressure≤1.4MPa after normal, check main steam large bypass cooling water manually operated valve (opening), close along road drain valve and boiler emergent evacuation valve; During degree of vacuum >=-75KPa, the large bypath system 9 of main steam of stopping using, the large bypath system 9 of the main steam that comes into operation again during degree of vacuum≤-80KPa.
After above-mentioned all systems are all normally run, steam turbine red switch work is about to start, and namely turbine system 10 is started working.As main steam temperature >=280 DEG C and main steam pressure >=0.9MPa, steam turbine automatic hanging lock, high-voltage safety oil is set up, automatic main throttle valve both sides standard-sized sheet, automatically touches and runs button " FUN ", and speed control system divides cold conditions, warm state, hot three kinds of states by detection cylinder wall temperature, automatically 3000r/min is raised to by raising speed rate, when rotating speed >=2980r/min stops high pressure oil pump automatically, rotating speed >=210r/min stops jacking(oil) pump automatically, and rotating speed >=30r/min is stopped quotation on the exchange car automatically.
It is grid-connected that final step is that grid-connected system 11 starts, provide when turbine speed reaches 3000r/min signal, high pressure contact cabinet signal is normal, excitation system signal is normal, generator signal, insulation test result is normal, after above-mentioned work completes, excitation system starts automatically, generator unit stator (until and side) after voltage equals 10000V, auto-parallel system self-starting: generator outlet side and power station bus bar side voltage, frequency, when phase angle is identical, the grid-connected transmission of electricity of automatic closing, close large bypath system 9, main steam increasing temperature and pressure, load >=1000KW, main steam pressure >=1.30MPa, now drop into above-mentioned every interlock protection (electricity step by step, instrument) and speed control system, according to main steam pressure Load adjustment device, main steam pressure equals 1.30MPa fixed pressure operation.
Cement afterheat generation station control method for fully automatic is for pressing (compressed air system 1, change water system 2, circulation 3, oil system 4, water of condensation water supply system 5, boiler ash removal system 6, boiler smoke wind system 7, pumped vacuum systems 8, large bypath system 9, turbine system 10 and grid-connected system 11) each subtense angle of sequence starting, after last subsystem has started, whether decentralized control system (DCS) can start according to a subtense angle in the condition judgment started, if started, startup can be sent and complete instruction, allow to start next step, until whole unit starting completes (comprising little sequential starting control program in the start-up routine of each subtense angle).After having started, unit can run automatically, and when Operational Limits off-design value, system can carry out oneself's adjustment according to pre-set program, once some monitor control index exceedes spacing value, automatically can carry out shutdown to protect unit according to the reverse-order started.
The thermal control process of cement afterheat generation station full-automatic control system is realized by programmable control system (PLC), decentralized control system (DCS), digital electric-hydraulic control system (DEH), Turbine Safety measuring instrument (TSI).By decentralized control system (DCS) programming, be divided at middle control operation interface: circulating water, oil system, heating coil, vacuumizes, and steam turbine starts, and electrically grid-connected totally six steps, realize automation start and stop and the operation of unit.
Its control mode is that full factory adopts machine, stove centralized control, and electric control system (ECS) enters DCS system monitoring by communication modes, the normal operation of unit and supplementary equipment and system with DCS operator station for Surveillance center; Change water system and adopt Automatic Control, and carry out communication, in central control chamber unified monitoring with the middle DCS of control; Electrical protection systems does not arrange independent backstage, adopts and carries out communication, in central control chamber unified monitoring with the middle PLC of control.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a cement afterheat generation station control method for fully automatic, it is characterized in that: one key is set at the central control chamber of cement afterheat generation station system and starts, according to compressed air system, the sequence starting changing water system, circulation, oil system, water of condensation water supply system, boiler ash removal system, boiler smoke wind system, pumped vacuum systems, large bypath system, turbine system and grid-connected system, fault is there is, until just next step can be started after fixing a breakdown in step by step; When all normal startup optimization of all systems, the operation of each system maintains near the best operating point that arranges separately, and its concrete steps are as follows:
1) start compressed air system: after central control chamber sends log-on message, the air compressor in compressed air system starts;
2) until step 1) instruction to complete and after feeding back to central control chamber, automatic startup water system: change between waterwheel and automatically identify whether start and stop raw water pump according to water level in raw water box, and whether reach setting value according to the water level of circulating water pool and automatically identify whether start and stop circulating water pool feed water pump; After water level meets the demands, pure water device system processed starts, and meets the water level requirement of sweet-water tank;
3) reach after in claimed range until sweet-water tank water level, start circulation: circulating water pump inlet valve standard-sized sheet, the import and export mortor operated valve of ON cycle water pump and outlet electric valve, vapour condenser and cooling tower inlet valve, then open frequency conversion cooling blower, oil cooler, generator and air cooler of generator;
4) oil system is started: automatically identify whether main fuel tank liquid level reaches setting value, automatically starts high pressure oil pump after reaching setting value; As high pressure oil pump oil pressure > 1.7MPa and lubrication pressure >=0.055MPa, open jacking(oil) pump; As apical axis oil pressure > 9.5MPa, open disk vehicle motor, as rotating speed >=30r/min after red switch, automatic stop turning motor; As rotating speed >=210r/min, jacking(oil) pump automatic stop, as rotating speed >=2980r/min, high pressure oil pump stops; As high pressure oil pressure < 1.7Mpa, high pressure oil pump is from opening;
5) start water of condensation water supply system: automatically identify condenser hotwell water level, as water level >=600mm, condensate pump starts;
6) boiler ash removal system starts: start machine for zipper, Star-like unloader and rapping apparatus respectively, and level-sensing device inspection verification starts;
7) boiler smoke wind system is opened: boiler bypass air door, export the breeze door, import air door are all opened, in increasing temperature and pressure process, progressively turn down bypass air door, open drain valve and steam turbine admission electric valve in air-out tube valve, super-heater exit case separation valve door, main steam pipe, gas-distributing cylinder steam inlet valve, main building;
8) when step 7) in main steam pressure >=0.8MPa time, drop into pumped vacuum systems: auxiliary vapor extractor admission electricity valve is opened, vapour condenser is opened to auxiliary exhaust mortor operated valve, as degree of vacuum >=-45Kpa, input shaft seal steam supply system, unlatching surge tank row vapour condenser is hydrophobic, initial steam enters surge tank separating valve; Surge tank temperature >=105 DEG C, gland sealing valve, gland heater induced draft fan before and after opening, drop into Multi-level water sealing device; As degree of vacuum >=-80KPa, main vapor extractor admission electricity valve is opened, and then vapour condenser to main exhaust mortor operated valve leaves, and closes auxiliary exhaust mortor operated valve, closes auxiliary vapor extractor admission electricity valve; Drop into supplementary equipment and vacuum system interlocking, when degree of vacuum >=-80KPa opens auxiliary vapor extractor, degree of vacuum≤-90KPa closes down auxiliary vapor extractor;
9) in step 7) in, the large bypath system of main steam is full-gear always, main steam manual isolation valve is opened, main steam pneumatic control valve and main steam pressure≤1.4MPa after normal, whether the cooling water manually operated valve checking large bypath system is open mode, closes along road drain valve and boiler emergent evacuation valve; As degree of vacuum >=-75KPa, large bypath system of stopping using, come into operation as degree of vacuum≤-80KPa large bypath system again;
10) turbine system is started working: as main steam temperature >=280 DEG C and main steam pressure >=0.9MPa, steam turbine automatic hanging lock, high-voltage safety oil is set up, automatic main throttle valve both sides standard-sized sheet, speed control system touches operation button automatically, speed control system divides cold conditions, warm state, hot three kinds of states by detection cylinder wall temperature, is automatically raised to 3000r/min;
11) grid-connected system starts grid-connected: step 10) in turbine speed when reaching 3000r/min, signal provides, high pressure contact cabinet, excitation system signal, generator signal, insulation test result is normal, after above-mentioned work completes, excitation system starts automatically, after generator unit stator voltage equals 10000V, grid-connected system self-starting: generator outlet side and power station bus bar side voltage detected, frequency, when phase angle is identical, the grid-connected transmission of electricity of automatic closing, close described large bypath system, main steam increasing temperature and pressure, load >=1000KW, main steam pressure >=1.30MPa, drop into above-mentioned every interlocking step by step and speed control system, according to main steam pressure Load adjustment device, main steam pressure equals 1.30MPa fixed pressure operation.
2. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 1) air compressor self arranges pressing force threshold point, pressure≤0.6MPa from opening, pressure >=0.8MPa automatic stop.
3. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 2) water level in raw water box requires as 2.2m≤water level≤3.5m; The water level settings value of circulating water pool is 1.8m≤water level≤3.5m; The water level of sweet-water tank requires as 1.0m≤water level≤4.5m.
4. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 4) in, if oil temperature is too low or rotor may have flexure, step 4 can be opened in advance); The setting value of main fuel tank liquid level is 1.5m.
5. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 7), as main steam pressure >=0.6MPa, close air-out tube valve, drop into interlocking; As 1.5MPa≤drum pressure≤1.7MPa, close interlocking.
6. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 8), after auxiliary vapor extractor admission electricity valve standard-sized sheet 3s, vapour condenser to auxiliary exhaust mortor operated valve leaves; After main vapor extractor admission electricity valve standard-sized sheet 3s, vapour condenser to main exhaust mortor operated valve leaves; After auxiliary exhaust mortor operated valve complete shut-down 3s, close auxiliary vapor extractor admission electricity valve.
7. a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, is characterized in that, described step 9), main steam pneumatic control valve and main steam pressure≤1.0Mpa, be beneficial to drain recovery.
8. a kind of cement afterheat generation station control method for fully automatic as described in one of claim 1 to 7; it is characterized in that; after having started; the system at cement afterheat generation station can be run automatically; when Operational Limits off-design value; system can adjust according to pre-set program, if monitor control index exceedes limit value, automatically can carry out shutdown according to the reverse-order of setting up procedure and carry out protective system.
9. realize the system of a kind of cement afterheat generation station as claimed in claim 1 control method for fully automatic, it is characterized in that: comprise compressed air system, change water system, circulation, oil system, water of condensation water supply system, boiler ash removal system, boiler smoke wind system, pumped vacuum systems, large bypath system, turbine system grid-connected system and electrical protection systems.
Priority Applications (1)
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| CN105781646A (en) * | 2016-04-26 | 2016-07-20 | 华北电力科学研究院有限责任公司 | Bypass pressure whole course automatic control method for gas-steam turbine combined cycle unit and system |
| CN106368746A (en) * | 2016-10-14 | 2017-02-01 | 国家电网公司 | Self-starting control method of steam turbine |
| CN107762581A (en) * | 2017-11-29 | 2018-03-06 | 山西铁峰化工有限公司 | A kind of screw expansion generating set full-automatic control system and method |
| CN108167027A (en) * | 2017-12-27 | 2018-06-15 | 山西晋城无烟煤矿业集团有限责任公司 | Pressurized gasification chilling process vacuum flash vapour electricity-generating method |
| CN111924922A (en) * | 2020-09-17 | 2020-11-13 | 成都建筑材料工业设计研究院有限公司 | System and method for realizing cement production, seawater desalination and power generation in coastal region in combined manner |
| 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 |
| CN113700637A (en) * | 2021-08-27 | 2021-11-26 | 沈阳透平机械股份有限公司 | Control method and device of compressor unit |
| CN114281033A (en) * | 2021-12-01 | 2022-04-05 | 江西金凯来科技有限公司 | One-key start-stop cooperative operation production management system and start-stop equipment method |
| CN117027982A (en) * | 2023-07-19 | 2023-11-10 | 湖南中冶长天节能环保技术有限公司 | Sintering waste heat power generation system |
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| CN105781646A (en) * | 2016-04-26 | 2016-07-20 | 华北电力科学研究院有限责任公司 | Bypass pressure whole course automatic control method for gas-steam turbine combined cycle unit and system |
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| CN111924922A (en) * | 2020-09-17 | 2020-11-13 | 成都建筑材料工业设计研究院有限公司 | System and method for realizing cement production, seawater desalination and power generation in coastal region in combined manner |
| 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 |
| 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 |
| CN113700637A (en) * | 2021-08-27 | 2021-11-26 | 沈阳透平机械股份有限公司 | Control method and device of compressor unit |
| CN114281033A (en) * | 2021-12-01 | 2022-04-05 | 江西金凯来科技有限公司 | One-key start-stop cooperative operation production management system and start-stop equipment method |
| CN117027982A (en) * | 2023-07-19 | 2023-11-10 | 湖南中冶长天节能环保技术有限公司 | Sintering waste heat power generation system |
| CN117027982B (en) * | 2023-07-19 | 2024-04-19 | 湖南中冶长天节能环保技术有限公司 | Sintering waste heat power generation system |
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