CN106168372A - A kind of thermal power plant's electrically driven feed pump system and on off control method thereof - Google Patents
A kind of thermal power plant's electrically driven feed pump system and on off control method thereof Download PDFInfo
- Publication number
- CN106168372A CN106168372A CN201610864356.9A CN201610864356A CN106168372A CN 106168372 A CN106168372 A CN 106168372A CN 201610864356 A CN201610864356 A CN 201610864356A CN 106168372 A CN106168372 A CN 106168372A
- Authority
- CN
- China
- Prior art keywords
- electric pump
- pump
- electrically operated
- operated gate
- grease
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/32—Automatic feed-control systems influencing the speed or delivery pressure of the feed pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/34—Applications of valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a kind of thermal power plant's electrically driven feed pump system and on off control method thereof, this system includes: electric pump water supply system and electric pump lubricating system；Wherein, electric pump water supply system includes: oxygen-eliminating device, electric pump, electric pump inlet screen, electric pump entrance Electrically operated gate, electric pump outlet non-return door, electric pump outlet Electrically operated gate, electric pump aerofluxus Electrically operated gate, electric pump recirculation regulation valve and electric pump motorized recycling valve；Electric pump includes electric pump fore pump, electric pump motor, electric pump main pump and change speed gear box, and electric pump motor is used for driving electric pump fore pump and the work of electric pump main pump；Electric pump inlet screen includes electric pump fore pump inlet screen and electric pump main pump inlet filter screen；Electric pump lubricating system includes: electric pump grease-box, the first electric pump grease pump, the second electric pump grease pump, electric pump lubricating oil heater, the first smoke exhaust fan, the second smoke exhaust fan, the first electric pump lubricating oil supply oil screen, the first electric pump lube oil cooler and the second electric pump lube oil cooler for oil screen, the second electric pump lubricating oil.
Description
Technical field
The present invention is about the electronic water-supply technology of thermal power plant, especially with regard to a kind of thermal power plant's electrically driven feed pump system and
On off control method.
Background technology
The major function of thermal power plant's electrically driven feed pump system is to provide to boiler to start feedwater, but in existing thermal power plant
Electrically driven feed pump system under full cut-off state, it is impossible to realize the automatic startup of electrically driven feed pump system；Also cannot give electronic
Under water pump system running status, it is achieved being automatically stopped of electrically driven feed pump system；Further, when electrically driven feed pump startup procedure
When carrying out to a certain step, if this step sequence condition is unsatisfactory for, it is impossible to make startup program proceed.
Summary of the invention
For solving above-mentioned technical problem, embodiments provide a kind of thermal power plant's electrically driven feed pump system and start and stop thereof
Control method.
On the one hand the embodiment of the present invention provides a kind of thermal power plant electrically driven feed pump system, described thermal power plant electrically driven feed pump
System includes: electric pump water supply system and electric pump lubricating system；Wherein,
Described electric pump water supply system includes: oxygen-eliminating device, electric pump, electric pump inlet screen, electric pump entrance Electrically operated gate, electric pump export
Non-return flap, electric pump outlet Electrically operated gate, electric pump aerofluxus Electrically operated gate, electric pump recirculation regulation valve and electric pump motorized recycling valve；Wherein,
Described electric pump includes electric pump fore pump, electric pump motor, electric pump main pump and electric pump main pump change speed gear box, and described electric pump motor is used for driving
Electric pump fore pump and the work of electric pump main pump；Described electric pump inlet screen includes electric pump fore pump inlet screen and electric pump main pump inlet
Filter screen；
Described oxygen-eliminating device for power plant boiler supply water, described electric pump entrance Electrically operated gate, electric pump fore pump inlet screen,
Electric pump fore pump, electric pump main pump inlet filter screen, electric pump main pump, electric pump outlet non-return door, electric pump outlet Electrically operated gate is successively set on
The lower part outlet of described oxygen-eliminating device is on the pipeline between power plant boiler；Described electric pump motorized recycling valve, electric pump recirculation
Regulation valve is successively set on the pipeline between described electric pump outlet non-return door extremely described oxygen-eliminating device upper entrance；At described electric pump
Motor be respectively arranged at two ends with cooling water inlet Electrically operated gate and coolant outlet Electrically operated gate, for described electric pump motor provide cold
But water；Described electric pump aerofluxus Electrically operated gate is arranged on the pump housing of described electric pump；
Described electric pump lubricating system includes: electric pump grease-box, the first electric pump grease pump, the second electric pump grease pump,
Electric pump lubricating oil heater, the first smoke exhaust fan, the second smoke exhaust fan, the first electric pump lubricating oil are for oil screen, the second electric pump profit
Lubricating oil is for oil screen, the first electric pump lube oil cooler and the second electric pump lube oil cooler；
Described electric pump grease-box is for providing the oil sources of lubricating oil used by electric pump bearing, described first electric pump lubricating oil
Pump, the second electric pump grease pump and electric pump lubricating oil heater are arranged in described electric pump grease-box；Described first electric pump profit
Oil pump, the second electric pump grease pump are connected in parallel, at described first electric pump grease pump, the second electric pump lubricating oil delivery side of pump
Place is respectively equipped with outlet non-return door；Described first electric pump lubricating oil sets gradually for oil screen, the first electric pump lube oil cooler
On pipeline between the female pipe of electric pump grease pump outlet to the oil return inlet of electric pump grease-box；Described second electric pump lubricating oil
It is connected in parallel for oil screen with described first electric pump lubricating oil for oil screen, at described first electric pump lubricating oil confession oil screen and the
Two electric pump lubricating oil being respectively arranged at two ends with entrance Electrically operated gate and exporting Electrically operated gate for oil screen；Described second electric pump lubricating oil is cold
But device and the first electric pump lube oil cooler are connected in parallel, at described first electric pump lube oil cooler and the second electric pump lubricating oil
Cooler be respectively arranged at two ends with entrance Electrically operated gate and outlet Electrically operated gate；Described first smoke exhaust fan, the second smoke evacuation fan parallel-connection
Be arranged on the pipeline between upper outlet and the air vent of described electric pump grease-box, described first smoke exhaust fan, second
Smoke exhaust fan be respectively arranged at two ends with entrance Electrically operated gate and outlet non-return door.
In one embodiment, in described oxygen-eliminating device, to sequentially pass through described electric pump entrance Electrically operated gate, electric pump preposition on Shui mono-tunnel
Pump intake filter screen, electric pump fore pump, electric pump main pump inlet filter screen, electric pump main pump, electric pump outlet non-return door and electric pump outlet are electronic
Door enters power plant boiler, and it is preposition that another road sequentially passes through described electric pump entrance Electrically operated gate, electric pump fore pump inlet screen, electric pump
Pump, electric pump main pump inlet filter screen, electric pump main pump, electric pump outlet non-return door, electric pump motorized recycling valve return described oxygen-eliminating device.
In one embodiment, the lubricating oil in described electric pump grease-box is through the first electric pump grease pump and/or the second electricity
Oil screen mistake is supplied by described first electric pump lubricating oil for oil screen and/or the second electric pump lubricating oil after pump lubrication oil pump adherence pressure
Filter, the lubricating oil after filtration supplies after being cooled down by the first electric pump lube oil cooler and/or the second electric pump lube oil cooler again
The bearing of described electric pump cools down and lubricates, and finally returns back to described electric pump grease-box.
In one embodiment, described first smoke exhaust fan and/or the second smoke exhaust fan are for by described first electric pump lubrication
The oil smoke that oil pump and/or the second electric pump grease pump produce is extracted out.
In one embodiment, described thermal power plant electrically driven feed pump system also includes: electrically driven feed pump system program controls to patrol
Collect operation button, electric pump grease pump block push button, smoke exhaust fan block push button and manual confirmation electric pump air-discharging and complete button.
Another aspect of the present invention additionally provides a kind of thermal power plant electrically driven feed pump system on off control method, described thermal power plant
Electrically driven feed pump system on off control method includes:
Judge whether that the first electric pump lubricating oil supplies the entrance Electrically operated gate of oil screen, outlet Electrically operated gate to open, and the second electric pump
Lubricating oil closes for entrance Electrically operated gate, the outlet Electrically operated gate of oil screen, and the entrance Electrically operated gate of the first electric pump lube oil cooler,
Outlet Electrically operated gate is opened, and the entrance Electrically operated gate of the second electric pump lube oil cooler, outlet Electrically operated gate are closed, and electric pump motor
Cooling water inlet Electrically operated gate, coolant outlet Electrically operated gate are opened, and the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan
Entrance Electrically operated gate close；If it does not, send unlatching the first electric pump lubricating oil to supply the entrance Electrically operated gate of oil screen, outlet Electrically operated gate
Instruction, and close second electric pump lubricating oil for oil screen entrance Electrically operated gate, outlet Electrically operated gate instruction, and open first electricity
The entrance Electrically operated gate of pump lubricating oils cooler, the instruction of outlet Electrically operated gate, and close the entrance of the second electric pump lube oil cooler
Electrically operated gate, the instruction of outlet Electrically operated gate, and open the cooling water inlet Electrically operated gate of electric pump motor, the finger of coolant outlet Electrically operated gate
Order, and close the instruction of the entrance Electrically operated gate of the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan；
If it is, judge whether the first electric pump grease pump has been turned on；If described first electric pump grease pump is not actuated,
Send the instruction starting the first electric pump grease pump；
If described first electric pump grease pump has been turned on, it is judged that whether the oil temperature in electric pump grease-box is higher than presetting temperature
Degree；If the oil temperature in described electric pump grease-box is less than described preset temperature, send the finger starting electric pump lubricating oil heater
Order；
If the oil temperature in described electric pump grease-box is higher than described preset temperature, it is judged that electric pump grease pump outlet mother's pipe
Whether pressure is more than the first preset pressure value；
If electric pump grease pump outlet main-piping pressure is more than described first preset pressure value, it may be judged whether put into electric pump
Grease pump is interlocked, and electric pump lubricating oil heater quits work；If not putting into electric pump grease pump interlocking and/or electric pump
Lubricating oil heater does not quits work, and sends the instruction putting into electric pump grease pump interlocking, and stops electric pump lubricating oil heater
Instruction；
If having put into electric pump grease pump interlocking, and electric pump lubricating oil heater quits work, it may be judged whether first
Smoke exhaust fan has turned on, and the first smoke evacuation fans entrance Electrically operated gate is opened；If described first smoke exhaust fan is not opened and/or
The entrance Electrically operated gate of one smoke exhaust fan is not opened, and sends the instruction starting the first smoke exhaust fan, and opens the first smoke evacuation fans entrance
The instruction of Electrically operated gate；
If described first smoke exhaust fan has turned on, and the first smoke evacuation fans entrance Electrically operated gate is opened, it may be judged whether throw
Enter smoke exhaust fan interlocking；If not putting into smoke exhaust fan interlocking, send the instruction putting into smoke exhaust fan interlocking；
If having put into smoke exhaust fan interlocking, it may be judged whether electric pump motorized recycling valve and electric pump recirculation regulation valve are the most
Open, and electric pump aerofluxus Electrically operated gate is opened, and electric pump outlet Electrically operated gate is closed；If it does not, send unlatching electric pump motorized recycling valve
With the instruction of electric pump recirculation regulation valve, and open the instruction of electric pump aerofluxus Electrically operated gate, and close the finger of electronic outlet Electrically operated gate
Order；
If described electric pump motorized recycling valve and electric pump recirculation regulation valve are opened the most, and electric pump aerofluxus Electrically operated gate is
Open, and electric pump outlet Electrically operated gate is closed, it is judged that whether electric pump entrance Electrically operated gate is in non-closed mode；If described electric pump entrance
Electrically operated gate is closed, and sends unlatching electric pump entrance Electrically operated gate the instruction of first scheduled time of time delay；
If described electric pump entrance Electrically operated gate is in non-closed mode, it is judged that the electric pump aerofluxus Electrically operated gate row of completing the most
Gas；
If described electric pump aerofluxus Electrically operated gate has completed aerofluxus, it is judged that electric pump entrance Electrically operated gate standard-sized sheet the most；If institute
State the electric pump non-standard-sized sheet of entrance Electrically operated gate, send the instruction opening electric pump entrance Electrically operated gate；
If described electric pump entrance Electrically operated gate standard-sized sheet, it is judged that whether electric pump has been turned on；If described electric pump is not actuated, send out
Go out to start the instruction of electric pump；
If described electric pump has been turned on, it is judged that whether electric pump outlet pressure is more than the second preset pressure value.
In one embodiment, described thermal power plant electrically driven feed pump system on off control method also includes:
Judge whether that electric pump is the most out of service, and electric pump outlet Electrically operated gate is closed；If described electric pump the most out of service and/
Or electric pump exports Electrically operated gate and do not closes, send the instruction stopping electric pump, and close the instruction of electric pump outlet Electrically operated gate；
If described electric pump is the most out of service, and electric pump outlet Electrically operated gate is closed, it may be judged whether after the stopping of described electric pump
Time delay one second scheduled time；
If described electric pump stop after second scheduled time described in time delay, it may be judged whether the cooling water inlet of electric pump is electronic
Door and coolant outlet Electrically operated gate are closed the most；If the cooling water inlet Electrically operated gate of described electric pump is not closed and/or coolant outlet
Electrically operated gate is not closed, and sends cooling water inlet Electrically operated gate and the instruction of coolant outlet Electrically operated gate closing electric pump；
If the cooling water inlet Electrically operated gate of described electric pump and coolant outlet Electrically operated gate are closed the most, it may be judged whether have dropped out
Electric pump grease pump is interlocked, and has dropped out smoke exhaust fan interlocking；If not exiting electric pump grease pump interlocking and/or the row of not exiting
Cigarette interlock of fan, sends the instruction exiting electric pump grease pump interlocking, and exits the instruction of smoke exhaust fan interlocking；
If having dropped out electric pump grease pump interlocking, and have dropped out smoke exhaust fan interlocking, it may be judged whether the first electric pump lubrication
Oil pump and the second electric pump grease pump quit work the most, and the first smoke exhaust fan and the second smoke exhaust fan the most out of service；
If it does not, send the first electric pump grease pump out of service and the instruction of the second electric pump grease pump, and first row out of service
Cigarette blower fan and the instruction of the second smoke exhaust fan.
In one embodiment, described thermal power plant electrically driven feed pump system on off control method also includes:
Judge whether that the water level in oxygen-eliminating device is oily higher than presetting higher than the oil level in preset water level, and electric pump grease-box
Position, and the cooling water pressure of supply electric pump is more than the 3rd preset pressure value；
If the water level in described oxygen-eliminating device is more than described higher than the oil level in described preset water level, and electric pump grease-box
Preset oil level, and the cooling water pressure of supply electric pump is more than described 3rd preset pressure value, it may be judged whether the first electric pump lubricating oil
Entrance Electrically operated gate, outlet Electrically operated gate for oil screen are opened, and the second electric pump lubricating oil is for the entrance Electrically operated gate of oil screen, outlet
Electrically operated gate is closed, and the entrance Electrically operated gate of the first electric pump lube oil cooler, outlet Electrically operated gate are opened, and the second electric pump lubricating oil
The entrance Electrically operated gate of cooler, outlet Electrically operated gate are closed, and the cooling water inlet Electrically operated gate of electric pump motor, coolant outlet are electronic
Door is opened, and the entrance Electrically operated gate of the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan is closed.
In one embodiment, described preset temperature is 20 DEG C, and described first preset pressure value is 0.2MPa, described first pre-
Fixing time as 5s, described second preset pressure value is 15MPa.
In one embodiment, described second scheduled time is 30min.
In one embodiment, described preset water level is 1500m, and described default oil level is 800mm, described 3rd preset pressure
Value is 0.3MPa.
Having the beneficial effects that of the embodiment of the present invention: the embodiment of the present invention provide thermal power plant's electrically driven feed pump system and
On off control method can be under thermal power plant's electrically driven feed pump system full cut-off state, it is achieved automatically opening of electrically driven feed pump system
Dynamic；Under thermal power plant's electrically driven feed pump system running state, it is achieved being automatically stopped of electrically driven feed pump system；And take into account artificial
Judge, it is possible to achieve thermal power plant's electrically driven feed pump system program controls the leapfrog of logic and runs, when a certain step of programed logic
Service condition for meet cause walk sequence cannot be carried out time, can artificially Rule of judgment whether can ignore and operate leapfrog move
Making, continuing the operation of programed logic until starting complete.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment of the present invention thermal power plant electrically driven feed pump system；
Fig. 2 is the schematic flow sheet of the on off control method of embodiment of the present invention thermal power plant electrically driven feed pump system；
Fig. 3 is the schematic flow sheet of the on off control method of embodiment of the present invention thermal power plant electrically driven feed pump system.
Drawing reference numeral
1. the first electric pump lubricating oil exports Electrically operated gate for oil screen entrance Electrically operated gate 2. first electric pump lubricating oil for oil screen
3. the second electric pump lubricating oil exports Electrically operated gate for oil screen entrance Electrically operated gate 4. second electric pump lubricating oil for oil screen
5. the first electric pump lube oil cooler A entrance Electrically operated gate 6. first electric pump lube oil cooler outlet Electrically operated gate
7. the second electric pump lube oil cooler B entrance Electrically operated gate 8. second electric pump lube oil cooler outlet Electrically operated gate
9. electric pump outlet Electrically operated gate 10. electric pump motorized recycling valve
11. electric pump recirculation regulation valve 12. electric pump steam discharge Electrically operated gate
13. electric pump motor cooling water inlet Electrically operated gate 14. electric pump motor coolant outlet Electrically operated gate
15. second electric pump lubricating oil smoke exhaust fan entrance Electrically operated gate 16. first electric pump lubricating oil smoke exhaust fan entrance Electrically operated gate
17. first electric pump lubricating oil smoke exhaust fan outlet non-return door 18. second electric pump lubricating oil smoke exhaust fan outlet non-return doors
19. second electric pump grease pump outlet non-return door 20. first electric pump grease pump outlet non-return doors
21. second electric pump grease pump 22. first electric pump grease pumps
23. electric pump fore pump 24. electric pump main pumps
25. first electric pump lubricating oil smoke exhaust fan 26. second electric pump lubricating oil smoke exhaust fans
27. first electric pump lubricating oil supply oil screen for oil screen 28. second electric pump lubricating oil
29. first electric pump lube oil cooler 30. second electric pump lube oil coolers
31. electric pump entrance Electrically operated gate 32. electric pump fore pump inlet screens
33. electric pump main pump inlet filter screen 34. electric pump outlet non-return doors
35. electric pump motor 36. electric pump main pump change speed gear boxes
37. electric pump grease-box electric heater 38. oxygen-eliminating devices
39. electric pump 40. electric pump grease-boxs
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, embodiments provide a kind of thermal power plant electrically driven feed pump system, this system is mainly by electric pump
Water supply system and electric pump lubricating system composition.
Wherein, electric pump water supply system includes: oxygen-eliminating device 38, electric pump 39, electric pump inlet screen (include electric pump fore pump entrance
Filter screen 32 and electric pump main pump inlet filter screen 33), electric pump entrance Electrically operated gate 31, electric pump outlet non-return door 34, electric pump outlet Electrically operated gate
9, electric pump aerofluxus Electrically operated gate 12, electric pump recirculation regulation valve 11 and electric pump motorized recycling valve 10.Wherein, electric pump 39 includes electric pump
Fore pump 23, electric pump motor 35, electric pump main pump 24 and electric pump main pump change speed gear box 36, electric pump motor 35 is used for driving electric pump fore pump
23 and electric pump main pump 24 work, electric pump main pump change speed gear box 36 is arranged between electric pump main pump 24 and electric pump motor 35.
Oxygen-eliminating device 38 is for power plant boiler water supply, electric pump entrance Electrically operated gate 31, electric pump fore pump inlet screen 32, electricity
Pump fore pump 23, electric pump main pump inlet filter screen 33, electric pump main pump 24, electric pump outlet non-return door 34, electric pump outlet Electrically operated gate 9 is successively
It is arranged on the lower part outlet of oxygen-eliminating device 9 to the pipeline between power plant boiler.Electric pump motorized recycling valve 10, electric pump recirculation
Regulation valve 11 is successively set on the pipeline being exported between oxygen-eliminating device 9 upper entrance of electric pump outlet non-return door 34.At electric pump
Motor 35 be respectively arranged at two ends with cooling water inlet Electrically operated gate 13 and coolant outlet Electrically operated gate 14, for carrying to electric pump motor 35
Cooling Water, takes away the heat produced when electric pump motor 35 runs.Electric pump aerofluxus Electrically operated gate 12 is arranged on the pump housing of electric pump 39,
For discharging generation gas when electric pump 39 runs.
Electric pump lubricating system includes: electric pump grease-box the 40, first electric pump grease pump the 22, second electric pump grease pump
21, electric pump lubricating oil heater the 37, first smoke exhaust fan the 25, second smoke exhaust fan the 26, first electric pump lubricating oil for oil screen 27,
Second electric pump lubricating oil is for oil screen the 28, first electric pump lube oil cooler 29 and the second electric pump lube oil cooler 30.
Electric pump grease-box 40 for providing the oil sources of lubricating oil used by electric pump bearing, the first electric pump grease pump 22, the
Two electric pump grease pumps 21 and electric pump lubricating oil heater 37 are arranged in electric pump grease-box 40.First electric pump grease pump
22, the second electric pump grease pump 21 is connected in parallel, in the exit of first electric pump grease pump the 22, second electric pump grease pump 21
It is respectively equipped with outlet non-return door 20 and outlet non-return door 19.First electric pump lubricating oil is cold for oil screen the 27, first electric pump lubricating oil
But device 29 is successively set on the electric pump grease pump female pipe of outlet to the pipeline between the oil return inlet of electric pump grease-box 40.The
Two electric pump lubricating oil are connected in parallel, at the first electric pump lubricating oil fuel feeding for oil screen 27 with the first electric pump lubricating oil for oil screen 28
Being respectively arranged at two ends with entrance Electrically operated gate 1 and exporting Electrically operated gate 2 of filter screen 27, supplies the two ends of oil screen 28 at the second electric pump lubricating oil
It is respectively equipped with entrance Electrically operated gate 3 and outlet Electrically operated gate 4.Second electric pump lube oil cooler 30 and the first electric pump lube oil cooler
29 are connected in parallel, being respectively arranged at two ends with entrance Electrically operated gate 5 and exporting Electrically operated gate 6 at the first electric pump lube oil cooler 29,
Second electric pump lube oil cooler 30 be respectively arranged at two ends with entrance Electrically operated gate 7 and outlet Electrically operated gate 8.First smoke exhaust fan 25,
Second smoke exhaust fan 26 is arranged in parallel on the pipeline between the upper outlet and air vent of electric pump grease-box 40, at first row
Cigarette blower fan 25 be respectively arranged at two ends with entrance Electrically operated gate 16 and outlet non-return door 17, set respectively at the two ends of the second smoke exhaust fan 26
There are entrance Electrically operated gate 15 and outlet non-return door 18.
As it is shown in figure 1, embodiment of the present invention thermal power plant electrically driven feed pump system is additionally provided with the pipeline of other necessity, valve
Door and relevant thermal technology's measuring point etc..
The major function of thermal power plant's electrically driven feed pump system that the embodiment of the present invention provides is to provide to boiler to start feedwater,
This system mainly includes electric pump water supply system and electric pump lubricating oil system, and electric pump lubricating oil system is to provide lubrication to electric pump bearing
Oil, take away electric pump 39 properly functioning time the heat that produces of rotor and bearing friction.Electric pump water supply system is by deoxygenation by electric pump 39
Feedwater adherence pressure in device 38 delivers to boiler, and a portion feedwater walks recirculating line when electric pump 39 starts.Electric pump moistens
Oil system is by electric pump grease-box 40, grease pump 21 and grease pump 22, smoke exhaust fan 25 and smoke exhaust fan 26, heating
Device 37, filter (i.e. for oil screen 27 with for oil screen 28), cooler 29 and cooler 30 and pipeline, valve and associated hot
Work measuring point forms.Electric pump water supply system is by oxygen-eliminating device 38, deaerator down-take pipe road, electric pump recirculating line, electric pump outlet
Road and valve and relevant thermal technology's measuring point complete.It addition, electric pump motor 35 also needs to outer Cooling Water, take away motor coil normal
Caloric value during operation.Electric pump grease-box 40, as the oil tank of electric pump lubricating oil system, is promoted by grease pump 21 or 22
Certain pressure, filters impurity through filter, after subcooler chilling temperature, resupplies electric pump bearing lubrication and cooling.Smoke evacuation
The oil smoke that rotor and bearing friction produce can be extracted out by blower fan 25 or 26.Electric heater 37 is to be promoted by lubricating oil temperature
To normal working temperature, the premise of startup is that arbitrary grease pump has been turned on.Oxygen-eliminating device 38 is as the water storage of electric pump water supply system
Case, it is provided that electric pump feeds water, starts, after receiving electric pump 39, the backwater walking recirculating line simultaneously.Electric pump drainage pipeline is by electric pump entrance
Electrically operated gate 31, electric pump pump housing emptying valve 12, electric pump fore pump inlet screen 32 and electric pump main pump inlet filter screen 33 form.Electric pump
Before 39 start, need to open electric pump entrance Electrically operated gate 31, the emptying valve 12 water filling aerofluxus of the electric pump pump housing.Inlet screen is used for preventing
Impurity enters electric pump, causes electric pump locking accident.Electric pump export pipeline includes that electric pump outlet non-return door 34 and electric pump outlet are electronic
Door 9.When electric pump outlet non-return door 34 prevents electric pump from stopping, water pours in down a chimney initiation pump housing reversing accident.Electric pump outlet Electrically operated gate 9 conduct
Electric pump, to the cut-off gate of boiler water supply, is opened then towards boiler water supply, closes and is also prevented from the state that non-return flap do not closes tight and issues
Raw pump housing reversing accident.Electric pump recirculating line includes electric pump recirculation regulation valve 11 and motorized recycling valve 10.Open at electric pump
When moving with the operation of electric pump low discharge, the conducting of recirculating line can ensure that the minimum operating flux continuously of electric pump, prevents electric pump
There is cavitation.
In one embodiment, in oxygen-eliminating device 38, Shui mono-tunnel sequentially passes through electric pump entrance Electrically operated gate 31, electric pump is preposition pumps into
Mouth filter screen 32, electric pump fore pump 23, electric pump main pump inlet filter screen 33, electric pump main pump 24, electric pump outlet non-return door 34 and electric pump go out
Mouthful Electrically operated gate 9 enters power plant boiler, another road sequentially pass through electric pump entrance Electrically operated gate 31, electric pump fore pump inlet screen 32,
Electric pump fore pump 23, electric pump main pump inlet filter screen 33, electric pump main pump 24, electric pump outlet non-return door 34, electric pump motorized recycling valve
10 return oxygen-eliminating device 38.
In one embodiment, the lubricating oil in electric pump grease-box 40 is through the first electric pump grease pump 22 (or the second electricity
Pump lubrication oil pump 21) by the first electric pump lubricating oil, for oil screen 27, (or the second electric pump lubricating oil is for oil screen after adherence pressure
28) filtering, the lubricating oil after filtration is cold by the first electric pump lube oil cooler 29 (or second electric pump lube oil cooler 30) again
The bearing supplying 39 electric pumps the most afterwards cools down and lubricates, and takes away the heat that electric pump bearing produces, and finally returns back to electric pump profit
Oil tank 40.Wherein, the first electric pump grease pump 22 and the second electric pump grease pump 21 are the most standby, but at certain condition
Under, it is also possible to come into operation simultaneously.In like manner, the first electric pump lube oil cooler 29 and the second electric pump lube oil cooler 30 are permissible
The most standby, it is also possible to come into operation simultaneously.
In one embodiment, first smoke exhaust fan the 25, second smoke exhaust fan 26 for by electric pump grease-box 40 by the
The oil smoke that one electric pump grease pump 22 (or second electric pump grease pump 21) produces is extracted out.
In one embodiment, thermal power plant's electrically driven feed pump system also includes 4 buttons: electrically driven feed pump system program controls
Logical operation button A1, electric pump grease pump block push button A2, smoke exhaust fan block push button A3 and manual confirmation electric pump air-discharging
Complete button A4.
Utilize electric pump grease pump block push button A2, can automatically the first electric pump grease pump 22 and the second electric pump be lubricated
Oil pump 21 used device is interlocked.After interlocking puts into, if a wherein unit trip, another equipment can be interlocked rapidly and be opened
Dynamic, maintain system properly functioning.In like manner, smoke exhaust fan block push button A4 is utilized to be discharged fume by the first smoke exhaust fan 25 and second
Blower fan 26 used device is interlocked, when wherein a smoke exhaust fan trips or cannot meet smoke evacuation demand, and another Smoke
Machine automatic interlock starts, and maintains system properly functioning.
The embodiment of the present invention additionally provides the on off control method of a kind of thermal power plant electrically driven feed pump system, this on off control
The executive agent of method can be the system such as computer or DCS.As in figure 2 it is shown, this on off control method includes:
Step S101, judge whether 1. first electric pump lubricating oil for oil screen 27 entrance Electrically operated gate 1, outlet Electrically operated gate 2
Open, 2. and the second electric pump lubricating oil for oil screen 28 entrance Electrically operated gate 3, outlet Electrically operated gate 4 close, 3. and the first electric pump profit
4. and the entrance electricity of the second electric pump lube oil cooler 30 the entrance Electrically operated gate 5 of oil cooler 29, outlet Electrically operated gate 6 are opened,
Dynamic door 7, outlet Electrically operated gate 8 are closed, 5. and the cooling water inlet Electrically operated gate of electric pump motor 35,13 coolant outlet Electrically operated gate 14
6. and the entrance Electrically operated gate 15 of entrance Electrically operated gate the 16, second smoke exhaust fan 26 of the first smoke exhaust fan 25 is closed open,.If it is above-mentioned
6 conditions there is any one condition to be unsatisfactory for, or has multiple condition to be unsatisfactory for, then carry out step S102, send unlatching
One electric pump lubricating oil is for oil screen entrance Electrically operated gate 1, the instruction of outlet Electrically operated gate 2, and closes the second electric pump lubricating oil fuel feeding filter
Web portal Electrically operated gate 3, the instruction of outlet Electrically operated gate 4, and open the first electric pump lube oil cooler entrance Electrically operated gate 5, outlet electricity
The instruction of dynamic door 6, and close the second electric pump lube oil cooler entrance Electrically operated gate 7, the instruction of outlet Electrically operated gate 8, and open electricity
The cooling water inlet Electrically operated gate 13 of pump motor 35, the instruction of coolant outlet Electrically operated gate 14, and close the first smoke evacuation fans entrance
The instruction of Electrically operated gate the 16, second smoke evacuation fans entrance Electrically operated gate 15.If the Electrically operated gate of this unlatching is originally in step S101
Open, then can ignore the open command received in step S102；If the Electrically operated gate should closed in step S101 is originally
Close, then can ignore the out code received in step S102, lower same.If above-mentioned 6 conditions are the most satisfied,
Then carry out step S103.
Step S103, judge whether the first electric pump grease pump 22 has been turned on.If the first electric pump grease pump 22 does not opens
Dynamic, send the instruction (step S104) starting the first electric pump grease pump 22.If the first electric pump grease pump 22 has been turned on, enter
Row step S105.
Whether step S105, the oil temperature judged in electric pump grease-box 40 be higher than preset temperature.If electric pump grease-box
Oil temperature in 40 is less than preset temperature, sends the instruction (step S106) starting electric pump lubricating oil heater 37.If electric pump moistens
Oil temperature in oil tank 40 is higher than preset temperature, carries out step S107.
In one embodiment, above-mentioned preset temperature is 20 DEG C.
Step S107, judge that electric pump grease pump outlet main-piping pressure is whether more than the first preset pressure value.If electric pump
Grease pump outlet main-piping pressure, more than the first preset pressure value, carries out step S108.
Generally, above-mentioned first preset pressure value is 0.2MPa.
Step S108, judge whether to put into electric pump grease pump interlocking, and electric pump lubricating oil heater 37 has stopped work
Make.If not putting into electric pump grease pump interlocking or electric pump lubricating oil heater 37 do not quit work, or two conditions being all
It is unsatisfactory for, then sends the instruction putting into electric pump grease pump interlocking, and stop the instruction (step of electric pump lubricating oil heater 37
S109).If having put into electric pump grease pump interlocking, and electric pump lubricating oil heater 37 quits work, carries out step
S110。
Step S110, judge whether that the first smoke exhaust fan 25 has turned on, and the first smoke evacuation fans entrance Electrically operated gate 16 is opened.
If the first smoke exhaust fan 25 is not opened or its entrance Electrically operated gate 16 is not opened, or two conditions are all unsatisfactory for, then send startup
The instruction of the first smoke exhaust fan 25, and open the instruction (step S111) of the first smoke evacuation fans entrance Electrically operated gate 16.If the
One smoke exhaust fan 25 has turned on, and the first smoke evacuation fans entrance Electrically operated gate 16 is opened, carries out step S112.
Step S112, judge whether to put into smoke exhaust fan interlocking.If not putting into smoke exhaust fan interlocking, send input row
The instruction (step S113) of cigarette interlock of fan.If having put into smoke exhaust fan interlocking, carry out step S114.
Step S114, judge whether that 1. electric pump motorized recycling valve 10 and electric pump recirculation regulation valve 11 is opened the most, 2. and
Electric pump aerofluxus Electrically operated gate 12 is opened, 3. and electric pump outlet Electrically operated gate 9 close.If above three condition has any one condition
It is unsatisfactory for, or has two conditions to be unsatisfactory for or three conditions are all unsatisfactory for, then send unlatching electric pump motorized recycling valve 10 He
The instruction of electric pump recirculation regulation valve 11, and open the instruction of electric pump aerofluxus Electrically operated gate 12, and close electronic outlet Electrically operated gate 9
Instruction (step S115).If electric pump motorized recycling valve 10 and electric pump recirculation regulation valve 11 are opened the most, and electric pump aerofluxus electricity
Dynamic door 12 is opened, and electric pump outlet Electrically operated gate 9 is closed, then carry out step S116.
Step S116, judge whether electric pump entrance Electrically operated gate 31 is in non-closed mode.If electric pump entrance Electrically operated gate 31
It is closed, sends the instruction (step S117) opening electric pump entrance Electrically operated gate 31 time delay one scheduled time.If it is electric
Pump intake Electrically operated gate 31 is in non-closed mode, carries out step S118.The purpose of this step is in order to electric pump 39 water filling aerofluxus,
So needing to judge the folding condition of electric pump entrance Electrically operated gate 31." non-closed mode " herein and electric pump entrance Electrically operated gate 31
Unlatching amplitude is relevant, and including multiple situation, such as, electric pump entrance Electrically operated gate opens half or opens a seam, also belongs to
In " non-closed mode ".
It is said that in general, needing time delay 5s, the most above-mentioned scheduled time after opening electric pump entrance Electrically operated gate 31 is 5s.
Step S118, judge that electric pump aerofluxus Electrically operated gate 12 has completed aerofluxus the most.If electric pump aerofluxus Electrically operated gate 12 is the completeest
Become aerofluxus, carry out step S119.
Step S119, judge electric pump entrance Electrically operated gate 31 standard-sized sheet the most.If the non-standard-sized sheet of electric pump entrance Electrically operated gate 31, send out
Go out to open the instruction (step S120) of electric pump entrance Electrically operated gate 31.If electric pump entrance Electrically operated gate 31 standard-sized sheet, carry out step
S121。
Step S121, judge whether electric pump 39 has been turned on.If electric pump 39 is not actuated, send the instruction starting electric pump 39
(step S122).If electric pump 39 has been turned on, carry out step S123.
Step S123, judge that electric pump outlet pressure is whether more than the second preset pressure value.This second preset pressure value is usual
It is set to 15MPa.
On off control method shown in Fig. 2 is for controlling the startup of thermal power plant's electrically driven feed pump system, therefore opening shown in Fig. 2
Stop control method is properly termed as the startup step sequence of thermal power plant's electrically driven feed pump system.
The purpose of step S103～step S113 is the lubricating oil system starting electric pump 39.Step S114～step S120
Purpose is for electrically driven feed pump pipeline water filling, and gives electric pump water filling air-discharging.The purpose of step S121～step S123 is to open
Dynamic electrically driven feed pump so that it is outlet pressure is more than 15MPa.
In one embodiment, the permissive condition starting step sequence is: 1. the water level in oxygen-eliminating device 38 is higher than preset water level；2. electricity
Oil level in pump lubrication fuel tank 40 is higher than presetting oil level；3. the cooling water pressure of supply electric pump 39 is more than the 3rd preset pressure value.
Normally, above-mentioned preset water level is 1500mm, and default oil level is 800mm, and the 3rd preset pressure value is 0.3MPa.That is, entering
Before row step S101, need to prejudge the water level in whether oxygen-eliminating device 38 higher than in 1500mm, and electric pump grease-box 40
Oil level higher than 800mm, and for the cooling water pressure of feed pump 39 more than 0.3MPa, in the situation that these three condition all meets
Under, just allow to start.
The embodiment of the present invention additionally provides a kind of thermal power plant electrically driven feed pump on off control method, this on off control method
Executive agent can be the system such as computer or DCS.As it is shown on figure 3, this on off control method specifically includes that
Step S201, judge whether that electric pump 39 is the most out of service, and electric pump outlet Electrically operated gate 9 is closed.If electric pump 39 is not
Out of service or electric pump outlet Electrically operated gate 9 is not closed, or two conditions are all unsatisfactory for, then send the instruction of electric pump 39 out of service,
And close the instruction (step S202) of electric pump outlet Electrically operated gate.If electric pump 39 is the most out of service, and electric pump outlet Electrically operated gate 9 is
Close, carry out step S203.
Step S203, judge whether electric pump 39 stop after time delay one Preset Time.If after electric pump 39 is out of service
Time delay reaches the default time, carries out step S204.
In one embodiment, time delay herein needs to reach 30min, and guarantee electric pump 39 is the most out of service.
Step S204, the cooling water inlet Electrically operated gate 13 judging whether electric pump 39 and coolant outlet Electrically operated gate 14 are the most
Close.If the cooling water inlet Electrically operated gate 13 of electric pump 39 is not closed or coolant outlet Electrically operated gate 14 is not closed, or two electronic
Men Junwei closes, then send cooling water inlet Electrically operated gate 13 and the instruction (step of coolant outlet Electrically operated gate 14 closing electric pump 39
S205).If the cooling water inlet Electrically operated gate 13 of electric pump 39 and coolant outlet Electrically operated gate 14 are closed the most, carry out step S206.
Step S206, judge whether to have dropped out electric pump grease pump interlocking, and have dropped out smoke exhaust fan interlocking.If do not moved back
Go out electric pump grease pump interlocking or do not exit smoke exhaust fan interlocking, or two interlockings are and exit, then sending and exit electric pump profit
Oil pump interlocking instruction and exit smoke exhaust fan interlocking instruction (step S207).If having dropped out electric pump grease pump interlocking
And have dropped out smoke exhaust fan interlocking, carry out step S208.
Step S208, judge whether that the first electric pump grease pump 22 and the second electric pump grease pump 21 are the most out of service,
And first smoke exhaust fan 25 and the second smoke exhaust fan 26 the most out of service.If first electric pump grease pump the 22, second electric pump
Grease pump the 21, first smoke exhaust fan 25 and the second smoke exhaust fan 26 there is any one equipment the most out of service, or has many
Individual equipment is the most out of service, then send the first electric pump grease pump 22 and instruction of the second electric pump grease pump 21 out of service,
And the first smoke exhaust fan 25 out of service and the instruction (step S209) of the second smoke exhaust fan 26.
On off control method shown in Fig. 3 is for controlling the stopping of electrically driven feed pump system, therefore the on off control shown in Fig. 3
Method can also become the stopping step of thermal power plant's electrically driven feed pump system.
On off control method shown in Fig. 2 and Fig. 3 is the program of thermal power plant's electrically driven feed pump system in the embodiment of the present invention
Control logic.Utilize this programed logic can realize following functions: under thermal power plant's electrically driven feed pump system full cut-off state,
Realize the automatic startup of electrically driven feed pump system；Under thermal power plant's electrically driven feed pump system running state, it is achieved electrically driven feed pump
Being automatically stopped of system；When the startup program of thermal power plant's electrically driven feed pump system is run to a certain step, condition is unsatisfactory for, if people
For judging that this condition can be ignored, then can manually carry out leapfrog action and continue the operation of startup program, until electrically driven feed pump
System start-up is complete.
Each step of the on off control method shown in Fig. 2 and Fig. 3, first judges whether feedback receives, if received, continues
Continue and carry out next step；If do not received, then etc. to be feedback receive.When not receiving due feedback signal, programed logic
This step can be rested on, wait manual operation.Power plant operations staff can find current and run the step unreceived feedback signal of sequence, people
For judging whether unreceived feedback signal affects continuing executing with of program programed logic.Work as if this feedback signal does not affect
Proceeding of front programed logic, operations staff can operate leapfrog action and continue the execution of programed logic；If should
Feedback signal affects present procedure and controls proceeding of logic, then operations staff can be unsatisfied according to each found
Feedback signal, goes investigation problem targetedly, until receiving this feedback signal, continues executing with programed logic.
By the on off control method shown in Fig. 2 and Fig. 3, can be in thermal power plant's electrically driven feed pump system full cut-off state
Under, it is achieved the automatic startup of electrically driven feed pump system；Under thermal power plant's electrically driven feed pump system running state, it is achieved electronic feedwater
Being automatically stopped of pumping system.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the reality in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware
Execute the form of example.And, the present invention can use at one or more computers wherein including computer usable program code
The upper computer program product implemented of usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of product.
The present invention is with reference to method, equipment (system) and the flow process of computer program according to embodiments of the present invention
Figure and/or block diagram describe.It should be understood that can the most first-class by computer program instructions flowchart and/or block diagram
Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
Instruction arrives the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce
A raw machine so that the instruction performed by the processor of computer or other programmable data processing device is produced for real
The device of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame now.
These computer program instructions may be alternatively stored in and computer or other programmable data processing device can be guided with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in this computer-readable memory produces and includes referring to
Make the manufacture of device, this command device realize at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function specified in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that at meter
Perform sequence of operations step on calculation machine or other programmable devices to produce computer implemented process, thus at computer or
The instruction performed on other programmable devices provides for realizing at one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function specified in individual square frame or multiple square frame.
The present invention applies specific embodiment principle and the embodiment of the present invention are set forth, above example
Explanation be only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art,
According to the thought of the present invention, the most all will change, in sum, in this specification
Hold and should not be construed as limitation of the present invention.
Claims (11)
1. thermal power plant's electrically driven feed pump system, it is characterised in that described thermal power plant electrically driven feed pump system includes: electric pump to
Water system and electric pump lubricating system；Wherein,
Described electric pump water supply system includes: oxygen-eliminating device, electric pump, electric pump inlet screen, electric pump entrance Electrically operated gate, electric pump outlet non-return
Door, electric pump outlet Electrically operated gate, electric pump aerofluxus Electrically operated gate, electric pump recirculation regulation valve and electric pump motorized recycling valve；Wherein, described
Electric pump includes electric pump fore pump, electric pump motor, electric pump main pump and electric pump main pump change speed gear box, and described electric pump motor is used for driving electric pump
Fore pump and the work of electric pump main pump；Described electric pump inlet screen includes electric pump fore pump inlet screen and the filter of electric pump main pump inlet
Net；
Described oxygen-eliminating device is for power plant boiler water supply, described electric pump entrance Electrically operated gate, electric pump fore pump inlet screen, electric pump
Fore pump, electric pump main pump inlet filter screen, electric pump main pump, electric pump outlet non-return door, electric pump outlet Electrically operated gate is successively set on described
The lower part outlet of oxygen-eliminating device is on the pipeline between power plant boiler；Described electric pump motorized recycling valve, electric pump recirculation regulate
Valve is successively set on the pipeline between described electric pump outlet non-return door extremely described oxygen-eliminating device upper entrance；At described electric pump motor
Be respectively arranged at two ends with cooling water inlet Electrically operated gate and coolant outlet Electrically operated gate, for described electric pump motor provide cooling
Water；Described electric pump aerofluxus Electrically operated gate is arranged on the pump housing of described electric pump；
Described electric pump lubricating system includes: electric pump grease-box, the first electric pump grease pump, the second electric pump grease pump, electric pump
Lubricating oil heater, the first smoke exhaust fan, the second smoke exhaust fan, the first electric pump lubricating oil are for oil screen, the second electric pump lubricating oil
For oil screen, the first electric pump lube oil cooler and the second electric pump lube oil cooler；
Described electric pump grease-box for providing the oil sources of lubricating oil used by electric pump bearing, described first electric pump grease pump, the
Two electric pump grease pumps and electric pump lubricating oil heater are arranged in described electric pump grease-box；Described first electric pump lubricating oil
Pump, the second electric pump grease pump are connected in parallel, and the outlet at described first electric pump grease pump, the second electric pump grease pump is punished
It is not provided with outlet non-return door；Described first electric pump lubricating oil is successively set on electricity for oil screen, the first electric pump lube oil cooler
Pump lubricating oils pump discharge mother's pipe is on the pipeline between the oil return inlet of electric pump grease-box；Described second electric pump lubricating oil fuel feeding
Filter screen is connected in parallel for oil screen with described first electric pump lubricating oil, at described first electric pump lubricating oil for oil screen and the second electricity
Pump lubricating oils being respectively arranged at two ends with entrance Electrically operated gate and exporting Electrically operated gate for oil screen；Described second electric pump lube oil cooler
It is connected in parallel with the first electric pump lube oil cooler, cools down at described first electric pump lube oil cooler and the second electric pump lubricating oil
Device be respectively arranged at two ends with entrance Electrically operated gate and outlet Electrically operated gate；Described first smoke exhaust fan, the second smoke evacuation fan parallel-connection are arranged
On pipeline between upper outlet and the air vent of described electric pump grease-box, in described first smoke exhaust fan, the second smoke evacuation
Blower fan be respectively arranged at two ends with entrance Electrically operated gate and outlet non-return door.
Thermal power plant the most according to claim 1 electrically driven feed pump system, it is characterised in that Shui mono-tunnel in described oxygen-eliminating device
Sequentially pass through described electric pump entrance Electrically operated gate, electric pump fore pump inlet screen, electric pump fore pump, electric pump main pump inlet filter screen, electricity
Pump main pump, electric pump outlet non-return door and electric pump outlet Electrically operated gate enter power plant boiler, and another road sequentially passes through described electric pump and enters
Mouth Electrically operated gate, electric pump fore pump inlet screen, electric pump fore pump, electric pump main pump inlet filter screen, electric pump main pump, electric pump outlet non-return
Door, electric pump motorized recycling valve return described oxygen-eliminating device.
Thermal power plant the most according to claim 1 electrically driven feed pump system, it is characterised in that in described electric pump grease-box
Lubricating oil is supplied by described first electric pump lubricating oil after the first electric pump grease pump and/or the second electric pump grease pump adherence pressure
Oil screen and/or the second electric pump lubricating oil fuel feeding strainer filtering, the lubricating oil after filtration is again by the first electric pump lube oil cooler
And/or second supply the bearing of described electric pump after the cooling of electric pump lube oil cooler and cool down and lubricate, finally return back to institute
State electric pump grease-box.
Thermal power plant the most according to claim 3 electrically driven feed pump system, it is characterised in that described first smoke exhaust fan and/
Or second smoke exhaust fan extract out for the oil smoke that described first electric pump grease pump and/or the second electric pump grease pump are produced.
Thermal power plant the most according to claim 1 electrically driven feed pump system, it is characterised in that described thermal power plant electrically driven feed pump
System also includes: electrically driven feed pump system program controls logical operation button, electric pump grease pump block push button, smoke exhaust fan connection
Lock button and manual confirmation electric pump air-discharging complete button.
6. thermal power plant's electrically driven feed pump system on off control method, it is characterised in that electrically driven feed pump system of described thermal power plant
System on off control method includes:
Judge whether that the first electric pump lubricating oil supplies the entrance Electrically operated gate of oil screen, outlet Electrically operated gate to open, and the second electric pump lubrication
Oil closes for entrance Electrically operated gate, the outlet Electrically operated gate of oil screen, and the entrance Electrically operated gate of the first electric pump lube oil cooler, outlet
Electrically operated gate is opened, and the entrance Electrically operated gate of the second electric pump lube oil cooler, outlet Electrically operated gate are closed, and the cooling of electric pump motor
Water inlet Electrically operated gate, coolant outlet Electrically operated gate are opened, and the entering of the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan
Mouth Electrically operated gate is closed；If it does not, send unlatching the first electric pump lubricating oil to supply the entrance Electrically operated gate of oil screen, the finger of outlet Electrically operated gate
Order, and close second electric pump lubricating oil for oil screen entrance Electrically operated gate, outlet Electrically operated gate instruction, and open first electric pump profit
The entrance Electrically operated gate of oil cooler, the instruction of outlet Electrically operated gate, and the entrance closing the second electric pump lube oil cooler is electronic
Door, the instruction of outlet Electrically operated gate, and open the cooling water inlet Electrically operated gate of electric pump motor, the instruction of coolant outlet Electrically operated gate,
And close the instruction of the entrance Electrically operated gate of the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan；
If it is, judge whether the first electric pump grease pump has been turned on；If described first electric pump grease pump is not actuated, send
Start the instruction of the first electric pump grease pump；
If described first electric pump grease pump has been turned on, it is judged that whether the oil temperature in electric pump grease-box is higher than preset temperature；
If the oil temperature in described electric pump grease-box is less than described preset temperature, send the instruction starting electric pump lubricating oil heater；
If the oil temperature in described electric pump grease-box is higher than described preset temperature, it is judged that electric pump grease pump outlet main-piping pressure
Whether more than the first preset pressure value；
If electric pump grease pump outlet main-piping pressure is more than described first preset pressure value, it may be judged whether put into electric pump lubrication
Oil pump is interlocked, and electric pump lubricating oil heater quits work；If not putting into electric pump grease pump interlocking and/or electric pump lubrication
Oil heater does not quits work, and sends the instruction putting into electric pump grease pump interlocking, and stops the finger of electric pump lubricating oil heater
Order；
If having put into electric pump grease pump interlocking, and electric pump lubricating oil heater quits work, it may be judged whether the first smoke evacuation
Blower fan has turned on, and the first smoke evacuation fans entrance Electrically operated gate is opened；If described first smoke exhaust fan is not opened and/or first row
The entrance Electrically operated gate of cigarette blower fan is not opened, and sends the instruction starting the first smoke exhaust fan, and it is electronic to open the first smoke evacuation fans entrance
The instruction of door；
If described first smoke exhaust fan has turned on, and the first smoke evacuation fans entrance Electrically operated gate is opened, it may be judged whether the row of input
Cigarette interlock of fan；If not putting into smoke exhaust fan interlocking, send the instruction putting into smoke exhaust fan interlocking；
If having put into smoke exhaust fan interlocking, it may be judged whether electric pump motorized recycling valve and electric pump recirculation regulation valve are opened the most,
And electric pump aerofluxus Electrically operated gate opens, and electric pump outlet Electrically operated gate is closed；If it does not, send unlatching electric pump motorized recycling valve and electricity
The instruction of pump recirculation regulation valve, and open the instruction of electric pump aerofluxus Electrically operated gate, and close the instruction of electronic outlet Electrically operated gate；
If described electric pump motorized recycling valve and electric pump recirculation regulation valve are opened the most, and electric pump aerofluxus Electrically operated gate is opened, and
Electric pump outlet Electrically operated gate is closed, it is judged that whether electric pump entrance Electrically operated gate is in non-closed mode；If described electric pump entrance is electronic
Door is closed, and sends unlatching electric pump entrance Electrically operated gate the instruction of first scheduled time of time delay；
If described electric pump entrance Electrically operated gate is in non-closed mode, it is judged that electric pump aerofluxus Electrically operated gate has completed aerofluxus the most；
If described electric pump aerofluxus Electrically operated gate has completed aerofluxus, it is judged that electric pump entrance Electrically operated gate standard-sized sheet the most；If described electricity
The non-standard-sized sheet of pump intake Electrically operated gate, sends the instruction opening electric pump entrance Electrically operated gate；
If described electric pump entrance Electrically operated gate standard-sized sheet, it is judged that whether electric pump has been turned on；If described electric pump is not actuated, sends and open
The instruction of galvanic electricity pump；
If described electric pump has been turned on, it is judged that whether electric pump outlet pressure is more than the second preset pressure value.
Thermal power plant the most according to claim 6 electrically driven feed pump system on off control method, it is characterised in that described thermoelectricity
Factory's electrically driven feed pump system on off control method also includes:
Judge whether that electric pump is the most out of service, and electric pump outlet Electrically operated gate is closed；If described electric pump is the most out of service and/or electric
Pump discharge Electrically operated gate is not closed, and sends the instruction stopping electric pump, and closes the instruction of electric pump outlet Electrically operated gate；
If described electric pump is the most out of service, and electric pump outlet Electrically operated gate is closed, it may be judged whether time delay after the stopping of described electric pump
One second scheduled time；
If described electric pump stop after second scheduled time described in time delay, it may be judged whether the cooling water inlet Electrically operated gate of electric pump and
Coolant outlet Electrically operated gate is closed the most；If the cooling water inlet Electrically operated gate of described electric pump is not closed and/or coolant outlet is electronic
Men Weiguan, sends cooling water inlet Electrically operated gate and the instruction of coolant outlet Electrically operated gate closing electric pump；
If the cooling water inlet Electrically operated gate of described electric pump and coolant outlet Electrically operated gate are closed the most, it may be judged whether have dropped out electric pump
Grease pump is interlocked, and has dropped out smoke exhaust fan interlocking；If not exiting electric pump grease pump interlocking and/or not exiting Smoke
Machine is interlocked, and sends the instruction exiting electric pump grease pump interlocking, and exits the instruction of smoke exhaust fan interlocking；
If having dropped out electric pump grease pump interlocking, and have dropped out smoke exhaust fan interlocking, it may be judged whether the first electric pump grease pump
And second electric pump grease pump the most out of service, and the first smoke exhaust fan and the second smoke exhaust fan the most out of service；If
No, send the first electric pump grease pump out of service and the instruction of the second electric pump grease pump, and the first Smoke out of service
Machine and the instruction of the second smoke exhaust fan.
Thermal power plant the most according to claim 6 electrically driven feed pump system on off control method, it is characterised in that described thermoelectricity
Factory's electrically driven feed pump system on off control method also includes:
Judge whether that the water level in oxygen-eliminating device is higher than higher than the oil level in preset water level, and electric pump grease-box and preset oil level, and
The cooling water pressure of supply electric pump is more than the 3rd preset pressure value；
If the water level in described oxygen-eliminating device is preset more than described higher than the oil level in described preset water level, and electric pump grease-box
Oil level, and the cooling water pressure of supply electric pump is more than described 3rd preset pressure value, it may be judged whether the first electric pump lubricating oil fuel feeding
The entrance Electrically operated gate of filter screen, outlet Electrically operated gate are opened, and the second electric pump lubricating oil for oil screen entrance Electrically operated gate, export electronic
Door closes, and the entrance Electrically operated gate of the first electric pump lube oil cooler, outlet Electrically operated gate are opened, and the cooling of the second electric pump lubricating oil
The entrance Electrically operated gate of device, outlet Electrically operated gate are closed, and the cooling water inlet Electrically operated gate of electric pump motor, coolant outlet Electrically operated gate are
Open, and the entrance Electrically operated gate of the entrance Electrically operated gate of the first smoke exhaust fan, the second smoke exhaust fan is closed.
Thermal power plant the most according to claim 6 electrically driven feed pump system on off control method, it is characterised in that described default
Temperature is 20 DEG C, and described first preset pressure value is 0.2MPa, and described first scheduled time is 5s, described second preset pressure value
For 15MPa.
Thermal power plant the most according to claim 7 electrically driven feed pump system on off control method, it is characterised in that described
Two scheduled times were 30min.
11. thermal power plant according to claim 8 electrically driven feed pump system on off control methods, it is characterised in that described pre-
If water level is 1500m, described default oil level is 800mm, and described 3rd preset pressure value is 0.3MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864356.9A CN106168372B (en) | 2016-09-29 | 2016-09-29 | A kind of thermal power plant's electrically driven feed pump system and its start-up and shut-down control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864356.9A CN106168372B (en) | 2016-09-29 | 2016-09-29 | A kind of thermal power plant's electrically driven feed pump system and its start-up and shut-down control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106168372A true CN106168372A (en) | 2016-11-30 |
| CN106168372B CN106168372B (en) | 2019-01-25 |
Family
ID=57376450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610864356.9A Active CN106168372B (en) | 2016-09-29 | 2016-09-29 | A kind of thermal power plant's electrically driven feed pump system and its start-up and shut-down control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106168372B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765028A (en) * | 2017-01-22 | 2017-05-31 | 华北电力科学研究院有限责任公司 | A kind of power plant boiler starts boiler circuit and its start-up and shut-down control method |
| CN109739273A (en) * | 2019-01-07 | 2019-05-10 | 阜阳华润电力有限公司 | Power plant's water system and power plant's water system control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203431460U (en) * | 2013-08-26 | 2014-02-12 | 中国广核集团有限公司 | Nuclear power plant electric main feed pump system, electric lubrication pump and control circuit of electric lubrication pump |
| CN204226177U (en) * | 2014-10-08 | 2015-03-25 | 中国石油化工股份有限公司 | A kind of interlock control system of lubricant oil oil pump of feed water pump |
| CN206073051U (en) * | 2016-09-29 | 2017-04-05 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's electrically driven feed pump system |
-
2016
- 2016-09-29 CN CN201610864356.9A patent/CN106168372B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203431460U (en) * | 2013-08-26 | 2014-02-12 | 中国广核集团有限公司 | Nuclear power plant electric main feed pump system, electric lubrication pump and control circuit of electric lubrication pump |
| CN204226177U (en) * | 2014-10-08 | 2015-03-25 | 中国石油化工股份有限公司 | A kind of interlock control system of lubricant oil oil pump of feed water pump |
| CN206073051U (en) * | 2016-09-29 | 2017-04-05 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's electrically driven feed pump system |
Non-Patent Citations (4)
| Title |
|---|
| 李宏乔: "超临界火电机组锅炉给水泵的设计与制造", 《中国优秀硕士学位论文全文数据库》 * |
| 赵明春: "给水泵启停及故障处理1", 《HTTP://M.DOC88.COM/P-048673441713》 * |
| 邵关兴等: "12.5万千瓦机组调速给水泵的设计", 《电力技术通讯》 * |
| 郭千文等: "1000MW机组给水泵汽轮机润滑油系统开发", 《热力透平》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765028A (en) * | 2017-01-22 | 2017-05-31 | 华北电力科学研究院有限责任公司 | A kind of power plant boiler starts boiler circuit and its start-up and shut-down control method |
| CN109739273A (en) * | 2019-01-07 | 2019-05-10 | 阜阳华润电力有限公司 | Power plant's water system and power plant's water system control method |
| CN109739273B (en) * | 2019-01-07 | 2021-10-12 | 阜阳华润电力有限公司 | Power plant water system and power plant water system control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106168372B (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106246247B (en) | A kind of thermal power plant's Turbo-generator Set lubricating oil system and its start-up and shut-down control method | |
| CN205717153U (en) | A kind of Start-up Systems for Direct-through Boilers | |
| CN206073051U (en) | A kind of thermal power plant's electrically driven feed pump system | |
| CN104235819A (en) | Control method for parallel operation of steam-driven induced draft fan and electric induced draft fan of thermal power generating unit | |
| CN107120981A (en) | A kind of on-line monitoring, the high back pressure supplying thermal condition exception control system of closed loop regulation | |
| CN107002500A (en) | Turbine energy generating system and its emergency operation method with emergency operation device | |
| CN106168372A (en) | A kind of thermal power plant's electrically driven feed pump system and on off control method thereof | |
| CN206439804U (en) | A kind of power plant boiler starts boiler circuit | |
| CN106247739A (en) | A kind of thermal power plant's industrial cooling circulating water system and on off control method thereof | |
| CN209287491U (en) | It is a kind of can be from the Mill Systems of start and stop | |
| CN206054012U (en) | A kind of thermal power plant's Turbo-generator Set lubricating oil system | |
| CN206222283U (en) | Direct current cooker starts hydrophobic heat recovery system | |
| CN105807803B (en) | Gas power station closed cooling water system and its start-up and shut-down control method | |
| CN205841771U (en) | Thermal power plant's electromotor double-flow se al oil | |
| CN105806012B (en) | Gas power station recirculating cooling water system and its start-up and shut-down control method | |
| CN206329496U (en) | The afterheat utilizing system of screw-rod air compressor | |
| CN206514329U (en) | A kind of power plant boiler fuel system | |
| CN206152449U (en) | Anti fuel oil system of thermal power plant's high pressure | |
| CN205842177U (en) | Thermal power plant's electromotor single-flow seal oil | |
| JP2017020774A (en) | Cogeneration system and heating equipment | |
| CN106765028A (en) | A kind of power plant boiler starts boiler circuit and its start-up and shut-down control method | |
| CN205330922U (en) | Air compressor machine waste heat thermoelectric generation system | |
| CN106051169B (en) | Thermal power plant's generator double-flow se al oil and its start-up and shut-down control method | |
| CN207348912U (en) | A kind of natural gas afterheat power generation turbine lubricating oil system | |
| CN106015898B (en) | Thermal power plant's generator single-flow seal oil and its start-up and shut-down control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |