CN105508231B - A kind of control method and system of the public electrically driven feed pump of thermal power generation unit - Google Patents
A kind of control method and system of the public electrically driven feed pump of thermal power generation unit Download PDFInfo
- Publication number
- CN105508231B CN105508231B CN201610074694.2A CN201610074694A CN105508231B CN 105508231 B CN105508231 B CN 105508231B CN 201610074694 A CN201610074694 A CN 201610074694A CN 105508231 B CN105508231 B CN 105508231B
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- China
- Prior art keywords
- feed pump
- power generating
- driven feed
- electrically driven
- fired power
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- 238000010248 power generation Methods 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000001105 regulatory effect Effects 0.000 claims abstract description 125
- 238000004064 recycling Methods 0.000 claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000005619 thermoelectricity Effects 0.000 claims description 37
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Turbines (AREA)
Abstract
The invention provides the control method and system of a kind of public electrically driven feed pump of thermal power generation unit, it is related to thermal power generation technical field of automatic control.Method includes：The process selecting instruction of the public electrically driven feed pump of thermal power generation unit is received, and determines that the unit for treating water is No. 1 fired power generating unit or No. 2 fired power generating units；Whether the condition of work for monitoring the control system of the public electrically driven feed pump of thermal power generation unit meets the condition of work pre-set；If meeting the condition of work pre-set, control the startup and stopping of public electrically driven feed pump, the opening and closing of each entrance electrically operated gate are controlled, the opening and closing of each outlet electrically operated gate are controlled, and the override of the public electrically driven feed pump recycling regulating valve of each unit of control is closed, override is opened and cut off.The present invention is solved when public electrically driven feed pump is that two units are public, judges the switching of control logic by manually, operates relatively complicated complexity, and the problem of add the operating risk of system.
Description
Technical field
The present invention relates to thermal power generation technical field of automatic control, more particularly to a kind of thermal power generation unit are public electronic
The control method and system of feed pump.
Background technology
Currently, in thermal power generation unit, feed pump be used to the water in oxygen-eliminating device sending into pot by high-pressure heater
Stove.The power resources of feed pump mainly have feed pump turbine driving and motor to drive two kinds.Different feed water pump matching sides
Case, can all have different influences to the economy and stability of unit operation.Because power resources are different, given for configuration steam-operating
For the generating set of water pump or public electrically driven feed pump, there is also larger difference for the operating process under start and stop and accident conditions
It is different.At present, in the prior art frequently with steam feed pump and the allocation plan of the public electrically driven feed pump of startup.Typically can be according to
Unit conditions of demand configure 30% capacity or the public electrically driven feed pump of 50% capacity is used during boiler start/ stop, together
When configure one or more steam feed pump depending on unit situation, in stable operation of unit from oxygen-eliminating device be boiler water filling.Due to
Public electrically driven feed pump is normally only used as unit starting, during unit cold start, for economics, public
Electrically driven feed pump is standing to be calculated as that two units are public, therefore it is required that realizing that using a public electrically driven feed pump be two units
Boiler water filling.Therefore, switching of the logical relation between two units how is realized, for the normal fortune of public electrically driven feed pump
OK, important in inhibiting.
At present, during unit starting, typically by artificially according to field condition come to public electrically driven feed pump first
Each bar control logic of generating set or the second generating set carries out switching, so as to select public electrically driven feed pump to be for the first hair
The boiler water filling of group of motors is still the boiler water filling of the second generating set.
However, because the logical intersection influence of two generating sets is more, logical relation is complicated, when public electrically driven feed pump
For two units it is public when, judge the switching of control logic by manually, operate relatively complicated complexity, and add the fortune of system
Row is dangerous.
The content of the invention
Embodiments of the invention provide a kind of control method and system of the public electrically driven feed pump of thermal power generation unit, to solve
Certainly because the logical intersection influence of two generating sets is more, logical relation is complicated, when public electrically driven feed pump is two units
When public, the switching of control logic is judged by manually, operate relatively complicated complexity, and add the operating risk of system
Problem.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of control method of the public electrically driven feed pump of thermal power generation unit, applied to a kind of thermal power generation unit public power
The control system of dynamic feed pump, the system includes：No. 1 fired power generating unit, No. 2 fired power generating units and public electrically driven feed pump；It is described
The outlet of public electrically driven feed pump exports electrically operated gate respectively through No. 1 fired power generating unit and No. 2 fired power generating units export electrically operated gate and institute
State No. 1 fired power generating unit and No. 2 fired power generating unit connections；The public electrically driven feed pump connects a fore pump；The fore pump enters
Mouth is respectively through No. 1 fired power generating unit entrance electrically operated gate and No. 2 fired power generating unit entrance electrically operated gates and No. 1 fired power generating unit oxygen-eliminating device and 2
The connection of number fired power generating unit oxygen-eliminating device；No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices are respectively through No. 1 thermoelectricity
The public electrically driven feed pump recycling regulating valve of unit and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units and public power
The outlet connection of dynamic feed pump；
Methods described, including：
Receive the process selecting instruction of the public electrically driven feed pump of thermal power generation unit；
Instructed according to the process selecting of the public electrically driven feed pump of the thermal power generation unit, it is determined that the unit for treating water is 1
Number fired power generating unit or No. 2 fired power generating units；
Whether the condition of work for monitoring the control system of the public electrically driven feed pump of thermal power generation unit meets what is pre-set
Condition of work；
If the work pre-set described in the condition of work satisfaction of the control system of the public electrically driven feed pump of thermal power generation unit
Make condition, and treat that the unit of water is No. 1 fired power generating unit, control the startup and stopping of the public electrically driven feed pump, control institute
The opening and closing of No. 1 fired power generating unit entrance electrically operated gate are stated, unlatching and the pass of No. 1 fired power generating unit outlet electrically operated gate is controlled
Close, and the override of the public electrically driven feed pump recycling regulating valve of control No. 1 fired power generating unit is closed, override is opened and cut off；
If the work pre-set described in the condition of work satisfaction of the control system of the public electrically driven feed pump of thermal power generation unit
Make condition, and treat that the unit of water is No. 2 fired power generating units, control the startup and stopping of the public electrically driven feed pump, control institute
The opening and closing of No. 2 fired power generating unit entrance electrically operated gates are stated, unlatching and the pass of No. 2 fired power generating units outlet electrically operated gate is controlled
Close, and the override of the public electrically driven feed pump recycling regulating valve of control No. 2 fired power generating units is closed, override is opened and cut off.
Further, the control system of the public electrically driven feed pump of the thermal power generation unit also include the first control button and
Second control button；The process selecting instruction is concurrently depressed triggering by first control button and the second control button.
Specifically, the startup and stopping of the control public electrically driven feed pump, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets first pre-set and opened
Dynamic enabled condition, controls the public electrically driven feed pump to start；
Described first starts enabled condition, including：
No. 1 fired power generating unit deaerator level is higher than the first preset water level；
And No. 2 fired power generating unit entrance electrically operated gates are closed；
And No. 1 fired power generating unit entrance electrically operated gate is opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And the fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And the fore pump journal bearing temperature is less than or equal to the first preset temperature；
And the fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit is more than the first preset percentage, and No. 2
The public electrically driven feed pump recycling regulating valve of fired power generating unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure value.
Specifically, the startup and stopping of the control public electrically driven feed pump, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets second pre-set and opened
Dynamic enabled condition, controls the public electrically driven feed pump to start；
Described second starts enabled condition, including：
No. 2 fired power generating unit deaerator levels are higher than the first preset water level；
And No. 1 fired power generating unit entrance electrically operated gate is closed；
And No. 2 fired power generating unit entrance electrically operated gates are opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And the fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And the fore pump journal bearing temperature is less than or equal to the first preset temperature；
And the fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units is more than the first preset percentage, and No. 1
The public electrically driven feed pump recycling regulating valve of fired power generating unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure.
Specifically, the startup and stopping of the control public electrically driven feed pump, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets first pre-set and protected
Stop condition is protected, controls the public electrically driven feed pump to stop；
The first protection stop condition, including：
No. 1 fired power generating unit entrance electrically operated gate is closed, and the duration reaches one first preset time；
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position of No. 1 fired power generating unit is anti-
Feedback is less than the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches
Second preset time；
Or, No. 1 fired power generating unit oxygen-eliminating device liquid level is less than the second preset water level；
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and hold
The continuous time reaches the 3rd preset time；
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reach the 5th it is default when
Between.
Specifically, the startup and stopping of the control public electrically driven feed pump, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets second pre-set and protected
Stop condition is protected, controls the public electrically driven feed pump to stop；
The second protection stop condition, including：
No. 2 fired power generating unit entrance electrically operated gates are closed, and the duration reaches one first preset time；
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position of No. 2 fired power generating units is anti-
Feedback is less than the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches
Second preset time；
Or, No. 2 fired power generating unit oxygen-eliminating device liquid levels are less than the second preset water level；
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and hold
The continuous time reaches the 3rd preset time；
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reach the 5th it is default when
Between.
Specifically, the opening and closing of the control No. 1 fired power generating unit entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Unit inlet electrically operated gate unlocking condition, controls No. 1 fired power generating unit entrance electrically operated gate to open；
No. 1 fired power generating unit entrance electrically operated gate unlocking condition, including No. 2 fired power generating unit entrance electrically operated gates are in and close shape
State.
Specifically, the opening and closing of the control No. 2 fired power generating units entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Unit inlet electrically operated gate unlocking condition, controls No. 2 fired power generating unit entrances electrically operated gate to open；
No. 2 fired power generating units entrance electrically operated gate unlocking condition, including No. 1 fired power generating unit entrance electrically operated gate are in and close shape
State.
Specifically, the opening and closing of the control No. 1 fired power generating unit entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Unit inlet electrically operated gate closedown condition, controls No. 1 fired power generating unit entrance electrically operated gate to close；
No. 1 fired power generating unit entrance electrically operated gate closedown condition, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
Specifically, the opening and closing of the control No. 2 fired power generating units entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Unit inlet electrically operated gate closedown condition, controls No. 2 fired power generating unit entrances electrically operated gate to close；
No. 2 fired power generating units entrance electrically operated gate closedown condition, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
Specifically, control No. 1 fired power generating unit exports the opening and closing of electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Machine set outlet electrically operated gate unlocking condition, controls No. 1 fired power generating unit outlet electrically operated gate to open；
No. 1 fired power generating unit exports electrically operated gate unlocking condition, including：
No. 2 fired power generating unit outlet electrically operated gates are closed, and treat that the unit of water is No. 1 fired power generating unit.
Specifically, control No. 2 fired power generating units export the opening and closing of electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Machine set outlet electrically operated gate unlocking condition, controls No. 2 fired power generating units outlet electrically operated gate to open；
No. 2 fired power generating units export electrically operated gate unlocking condition, including：
No. 1 fired power generating unit outlet electrically operated gate is closed, and treats that the unit of water is No. 2 fired power generating units.
Specifically, control No. 1 fired power generating unit exports the opening and closing of electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The chain closedown condition of machine set outlet electrically operated gate, controls No. 1 fired power generating unit outlet electrically operated gate is chain to close；
No. 1 fired power generating unit exports the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
Specifically, control No. 2 fired power generating units export the opening and closing of electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The chain closedown condition of machine set outlet electrically operated gate, controls No. 2 fired power generating units outlet electrically operated gate is chain to close；
No. 2 fired power generating units export the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 1 fired power generating unit is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit closes condition, controls the public electrically driven feed pump of No. 1 fired power generating unit
Regulating valve override is recycled to close；
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit closes condition, including：
It is No. 1 fired power generating unit to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow,
And the duration reaches the 4th preset time；
Or, it is No. 2 fired power generating units to treat the unit of water.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 2 fired power generating units is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit closes condition, controls the public electrically driven feed pump of No. 2 fired power generating units
Regulating valve override is recycled to close；
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units closes condition, including：
It is No. 2 fired power generating units to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow,
And the duration reaches the 4th preset time；
Or, it is No. 1 fired power generating unit to treat the unit of water.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 1 fired power generating unit is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit opens condition, controls the public electrically driven feed pump of No. 1 fired power generating unit
Recycling regulating valve override is opened；
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit opens condition, including：
The out code that the public electrically driven feed pump of No. 1 fired power generating unit recycles regulating valve is not received.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 2 fired power generating units is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit opens condition, controls the public electrically driven feed pump of No. 2 fired power generating units
Recycling regulating valve override is opened；
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units opens condition, including：
The out code that the public electrically driven feed pump of No. 2 fired power generating units recycles regulating valve is not received.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 1 fired power generating unit is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The public electrically driven feed pump of unit recycles the excision condition of regulating valve, controls the public electrically driven feed pump of No. 1 fired power generating unit again
Circulating regulation valve is cut off；
The public electrically driven feed pump of No. 1 fired power generating unit recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and hold
The continuous time reaches the 4th preset time；
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 1 fired power generating unit；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 1 fired power generating unit and valve bit instruction deviation are more than
3rd preset percentage, and the duration reach the 4th preset time.
Specifically, the override of the public electrically driven feed pump recycling regulating valve of control No. 2 fired power generating units is closed, override is opened and
Excision, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The public electrically driven feed pump of unit recycles the excision condition of regulating valve, controls the public electrically driven feed pump of No. 2 fired power generating units again
Circulating regulation valve is cut off；
The public electrically driven feed pump of No. 2 fired power generating units recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and hold
The continuous time reaches the 4th preset time；
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 2 fired power generating units；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 2 fired power generating units and valve bit instruction deviation are more than
3rd preset percentage, and the duration reach the 4th preset time.
A kind of control system of the public electrically driven feed pump of thermal power generation unit, including：Thermal power generation unit is electronic to give water system
System, the first dcs controller, the second dcs controller, the first control button, the second control are pressed
Button；It is electronic that the electronic water supply system of thermal power generation unit includes No. 1 fired power generating unit entrance electrically operated gate, No. 2 fired power generating unit entrances
Door, No. 1 fired power generating unit outlet electrically operated gate, No. 2 fired power generating unit outlet electrically operated gates, No. 1 public electrically driven feed pumps of fired power generating unit are followed again
The public electrically driven feed pump recycling regulating valve of ring regulating valve, No. 2 fired power generating units and public electrically driven feed pump；
The first dcs controller connects No. 1 fired power generating unit entrance electrically operated gate, No. 2 thermoelectricitys respectively
Unit inlet electrically operated gate, No. 1 fired power generating unit outlet electrically operated gate, No. 2 fired power generating unit outlet electrically operated gates, No. 1 fired power generating unit public powers
Dynamic feed pump recycling regulating valve and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units；
The second dcs controller is connected with the public electrically driven feed pump；
First control button and the second control button series connection, and with the first dcs controller and
Second dcs controller is connected, and the first control button is also connected with power circuit；The first distributed AC servo system system
System controller and the communication connection of the second dcs controller.
In addition, the electronic water supply system of thermal power generation unit also includes No. 1 fired power generating unit, No. 2 fired power generating units；The public affairs
Electrically operated gate is exported respectively through No. 1 fired power generating unit and No. 2 fired power generating units export electrically operated gate and described 1 with the outlet of electrically driven feed pump
Number fired power generating unit and No. 2 fired power generating units connections；The public electrically driven feed pump connects a fore pump；The entrance of the fore pump point
Jing Guo not No. 1 fired power generating unit entrance electrically operated gate and No. 2 fired power generating unit entrance electrically operated gates and No. 1 fired power generating unit oxygen-eliminating device and No. 2 fire
Group of motors oxygen-eliminating device is connected；No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices are respectively through No. 1 fired power generating unit
Public electrically driven feed pump recycling regulating valve and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units electronic are given with public
The outlet connection of water pump.
Further, the control system of the public electrically driven feed pump of the thermal power generation unit also includes actuating relay；Institute
The two ends for stating actuating relay are connected to the first relay normally open node and the second relay normally open node；Described second after
The normally opened node of electrical equipment is connected with the first dcs controller and the second dcs controller；Described first
Relay normally open node is connected with front-end control host computer.
The control method and system of the public electrically driven feed pump of a kind of thermal power generation unit provided in an embodiment of the present invention, pass through
Whether process selecting is instructed, and met by the condition of work for the control system for monitoring the public electrically driven feed pump of thermal power generation unit
The condition of work pre-set, throws to complete to automatically control the logic of control system of the public electrically driven feed pump of thermal power generation unit
Cut, judge without people and control, it is to avoid when public electrically driven feed pump is the numerous of manual operation when two units are public
Trivial complicated and error in judgement easily causes the problem of system dangerous is run.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of flow of the control method of the public electrically driven feed pump of thermal power generation unit provided in an embodiment of the present invention
Figure；
Fig. 2 is a kind of structure of the control system of the public electrically driven feed pump of thermal power generation unit provided in an embodiment of the present invention
Schematic diagram one；
Fig. 3 is a kind of structure of the control system of the public electrically driven feed pump of thermal power generation unit provided in an embodiment of the present invention
Schematic diagram two.
Embodiment
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
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of control method of the public electrically driven feed pump of thermal power generation unit, applied to a kind of fire
The control system of the public electrically driven feed pump of power generator group, the system includes：No. 1 fired power generating unit, No. 2 fired power generating units and public power
Dynamic feed pump；The outlet of public electrically driven feed pump exports electrically operated gate respectively through No. 1 fired power generating unit and No. 2 fired power generating units export electricity
Dynamic door is connected with No. 1 fired power generating unit and No. 2 fired power generating units；Public electrically driven feed pump connects a fore pump；The entrance of fore pump point
Jing Guo not No. 1 fired power generating unit entrance electrically operated gate and No. 2 fired power generating unit entrance electrically operated gates and No. 1 fired power generating unit oxygen-eliminating device and No. 2 fire
Group of motors oxygen-eliminating device is connected；No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices are public respectively through No. 1 fired power generating unit
Electrically driven feed pump recycles regulating valve and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units and public electrically driven feed pump
Outlet connection.(system corresponding to visible Fig. 2 of structure of the control system of the public electrically driven feed pump of thermal power generation unit is implemented
Example, here is omitted.)
As shown in figure 1, the control method of the public electrically driven feed pump of the thermal power generation unit, including：
Step 101, the process selecting instruction for receiving the public electrically driven feed pump of thermal power generation unit.
Step 102, according to the process selecting of the public electrically driven feed pump of thermal power generation unit instruct, it is determined that treating the unit of water
For No. 1 fired power generating unit or No. 2 fired power generating units.
Whether step 103, the condition of work for the control system for monitoring the public electrically driven feed pump of thermal power generation unit meet pre-
The condition of work first set.Step 104 or step 105 are performed after step 103.
If the condition of work of the control system of the public electrically driven feed pump of step 104, thermal power generation unit meets and pre-set
Condition of work, and treat that the unit of water is No. 1 fired power generating unit, control the startup and stopping of public electrically driven feed pump, control No. 1
The opening and closing of fired power generating unit entrance electrically operated gate, No. 1 fired power generating unit of control exports the opening and closing of electrically operated gate, and control
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit is closed, override is opened and cut off.
If the condition of work of the control system of the public electrically driven feed pump of step 105, thermal power generation unit meets and pre-set
Condition of work, and treat that the unit of water is No. 2 fired power generating units, control the startup and stopping of public electrically driven feed pump, control No. 2
The opening and closing of fired power generating unit entrance electrically operated gate, No. 2 fired power generating units of control export the opening and closing of electrically operated gate, and control
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units is closed, override is opened and cut off.
A kind of control method of the public electrically driven feed pump of thermal power generation unit provided in an embodiment of the present invention, is selected by flow
Select instruction, and whether met and set in advance by the condition of work of the control system for monitoring the public electrically driven feed pump of thermal power generation unit
The condition of work put, come the logic switching of the control system that completes to automatically control the public electrically driven feed pump of thermal power generation unit, and
Judge without people and control, it is to avoid when the very complicated that public electrically driven feed pump is manual operation when two units are public
And error in judgement easily causes the problem of system dangerous is run.
In addition, as shown in Fig. 2 the control system of the public electrically driven feed pump of thermal power generation unit also includes the first control button
With the second control button；Process selecting instruction can be concurrently depressed triggering by the first control button and the second control button.It is logical
Cross two control buttons and control public electrically driven feed pump to be cut for water in No. 1 fired power generating unit and No. 2 fired power generating units while pressing down
Change, operating personnel can be avoided to encounter a button by mistake with regard to trigger flow selection instruction, it is to avoid the dangerous operation of system.The stream
Journey selection instruction can be triggered as the first pass of water in No. 1 fired power generating unit, or is the second of water in No. 2 fired power generating units
Journey.Exemplified by triggering first pass, when two control buttons are pressed simultaneously, and No. 1 fired power generating unit power source bus and No. 2 thermoelectricitys
Unit power source bus is in tripped condition, then produces the 3s pulses of process selecting instruction.
In addition, process selecting instruction can also by dcs (Distributed Control System,
Abbreviation DCS) trigger, such as common operating personnel, operator station can be set, to carry out touching for process selecting instruction
Hair, and for engineer, then engineer station can be set, the triggering of process selecting instruction can be carried out, first can also be changed
The flow condition of work that pre-sets related in second procedure.
Specifically, in above-mentioned steps 104, controlling the startup and stopping of public electrically driven feed pump, can including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets first pre-set and opened
Dynamic enabled condition, controls public electrically driven feed pump to start.
Wherein, the first startup enabled condition, including：
No. 1 fired power generating unit deaerator level is higher than the first preset water level；First preset water level can be 1900mm, but not
It is limited only to this.
And No. 2 fired power generating unit entrance electrically operated gates are closed；
And No. 1 fired power generating unit entrance electrically operated gate is opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；First preset temperature can be with
For 75 DEG C, but it is not only limited to this.
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；Second preset temperature can be
80 DEG C, but it is not only limited to this.
And fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；3rd preset temperature can be
110 DEG C, but it is not only limited to this.
And fore pump journal bearing temperature is less than or equal to the first preset temperature；
And fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit is more than the first preset percentage, and No. 2
The public electrically driven feed pump recycling regulating valve of fired power generating unit is completely closed；First preset percentage can be 90%, but not only
It is confined to this.
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure value.
In addition, in above-mentioned steps 105, controlling the startup and stopping of public electrically driven feed pump, can including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets second pre-set and opened
Dynamic enabled condition, controls public electrically driven feed pump to start.
The second startup enabled condition, including：
No. 2 fired power generating unit deaerator levels are higher than the first preset water level；
And No. 1 fired power generating unit entrance electrically operated gate is closed；
And No. 2 fired power generating unit entrance electrically operated gates are opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And fore pump journal bearing temperature is less than or equal to the first preset temperature；
And fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units is more than the first preset percentage, and No. 1
The public electrically driven feed pump recycling regulating valve of fired power generating unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure.
In addition, in above-mentioned steps 104, controlling the startup and stopping of public electrically driven feed pump, can also including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets first pre-set and protected
Stop condition is protected, controls public electrically driven feed pump to stop.
The first protection stop condition, including：
No. 1 fired power generating unit entrance electrically operated gate is closed, and the duration reaches one first preset time；First preset time
It can be 3s, but be not only limited to this.
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position of No. 1 fired power generating unit is anti-
Feedback is less than the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches
Second preset time；Second preset percentage is 80%, and second preset time is 20s, and first preset flow is
97.5t/h, but it is not only limited to this.
Or, No. 1 fired power generating unit oxygen-eliminating device liquid level is less than the second preset water level.
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and hold
The continuous time reaches the 3rd preset time；3rd preset time can be 1s, but be not only limited to this.
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；4th
Preset time can be 2s, but be not only limited to this.
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；4th preset temperature can be
95 DEG C, but it is not only limited to this.
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；5th preset temperature can be with
For 85 DEG C, but it is not only limited to this.
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reach the 5th it is default when
Between.5th preset time can be 30s, but be not only limited to this.
In addition, in step 105, controlling the startup and stopping of public electrically driven feed pump, can also including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets second pre-set and protected
Stop condition is protected, controls public electrically driven feed pump to stop.
The second protection stop condition, including：
No. 2 fired power generating unit entrance electrically operated gates are closed, and the duration reaches one first preset time；
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position of No. 2 fired power generating units is anti-
Feedback is less than the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches
Second preset time；
Or, No. 2 fired power generating unit oxygen-eliminating device liquid levels are less than the second preset water level；
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and hold
The continuous time reaches the 3rd preset time；
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reach the 5th it is default when
Between.
In addition, in above-mentioned steps 104, the opening and closing of No. 1 fired power generating unit entrance electrically operated gate of the control can be wrapped
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Unit inlet electrically operated gate unlocking condition, No. 1 fired power generating unit entrance electrically operated gate of control is opened.
No. 1 fired power generating unit entrance electrically operated gate unlocking condition, including No. 2 fired power generating unit entrance electrically operated gates are in and close shape
State.
In addition, in above-mentioned steps 105, controlling the opening and closing of No. 2 fired power generating unit entrance electrically operated gates, can including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Unit inlet electrically operated gate unlocking condition, No. 2 fired power generating unit entrance electrically operated gates of control are opened.
No. 2 fired power generating unit entrance electrically operated gate unlocking conditions, including No. 1 fired power generating unit entrance electrically operated gate are closed.
In addition, in above-mentioned steps 104, controlling the opening and closing of No. 1 fired power generating unit entrance electrically operated gate, can also wrapping
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Unit inlet electrically operated gate closedown condition, No. 1 fired power generating unit entrance electrically operated gate of control is closed.
No. 1 fired power generating unit entrance electrically operated gate closedown condition, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
In addition, in above-mentioned steps 105, controlling the opening and closing of No. 2 fired power generating unit entrance electrically operated gates, can also wrapping
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Unit inlet electrically operated gate closedown condition, No. 2 fired power generating unit entrance electrically operated gates of control are closed.
No. 2 fired power generating unit entrance electrically operated gate closedown conditions, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
Specifically, in above-mentioned steps 104, No. 1 fired power generating unit of control exports the opening and closing of electrically operated gate, can wrap
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
Machine set outlet electrically operated gate unlocking condition, No. 1 fired power generating unit outlet electrically operated gate of control is opened.
No. 1 fired power generating unit exports electrically operated gate unlocking condition, including：
No. 2 fired power generating unit outlet electrically operated gates are closed, and treat that the unit of water is No. 1 fired power generating unit.
In addition, in above-mentioned steps 105, No. 2 fired power generating units of control export the opening and closing of electrically operated gate, can include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
Machine set outlet electrically operated gate unlocking condition, No. 2 fired power generating unit outlet electrically operated gates of control are opened.
No. 2 fired power generating units export electrically operated gate unlocking condition, including：
No. 1 fired power generating unit outlet electrically operated gate is closed, and treats that the unit of water is No. 2 fired power generating units.
In addition, in above-mentioned steps 104, No. 1 fired power generating unit of control exports the opening and closing of electrically operated gate, can also wrap
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The chain closedown condition of machine set outlet electrically operated gate, No. 1 fired power generating unit outlet electrically operated gate of control is chain to close.
No. 1 fired power generating unit exports the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
In addition, in above-mentioned steps 105, No. 2 fired power generating units of control export the opening and closing of electrically operated gate, can also wrap
Include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The chain closedown condition of machine set outlet electrically operated gate, No. 2 fired power generating unit outlet electrically operated gates of control are chain to close.
No. 2 fired power generating units export the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
In addition, in above-mentioned steps 104, the public electrically driven feed pump of No. 1 fired power generating unit of control recycles the override of regulating valve
Close, override is opened and cut off, can include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit closes condition, and No. 1 public electrically driven feed pump of fired power generating unit of control is followed again
Ring regulating valve override is closed.
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit closes condition, including：
It is No. 1 fired power generating unit to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow,
And the duration reaches the 4th preset time；Second preset flow can be 400t/h, but be not only limited to this.
Or, it is No. 2 fired power generating units to treat the unit of water.
In addition, in above-mentioned steps 105, the public electrically driven feed pump of No. 2 fired power generating units of control recycles the override of regulating valve
Close, override is opened and cut off, can include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit closes condition, and No. 2 public electrically driven feed pumps of fired power generating unit of control are followed again
Ring regulating valve override is closed.
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units closes condition, including：
It is No. 2 fired power generating units to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow,
And the duration reaches the 4th preset time；
Or, it is No. 1 fired power generating unit to treat the unit of water.
In addition, in above-mentioned steps 104, the public electrically driven feed pump of No. 1 fired power generating unit of control recycles the override of regulating valve
Close, override is opened and cut off, can also include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit opens condition, and No. 1 public electrically driven feed pump of fired power generating unit of control is followed again
Ring regulating valve override is opened.
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit opens condition, including：
The out code that the public electrically driven feed pump of No. 1 fired power generating unit recycles regulating valve is not received.
In addition, in above-mentioned steps 105, the public electrically driven feed pump of No. 2 fired power generating units of control recycles the override of regulating valve
Close, override is opened and cut off, can also include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The override of the public electrically driven feed pump recycling regulating valve of unit opens condition, and No. 2 public electrically driven feed pumps of fired power generating unit of control are followed again
Ring regulating valve override is opened.
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units opens condition, including：
The out code that the public electrically driven feed pump of No. 2 fired power generating units recycles regulating valve is not received.
In addition, in above-mentioned steps 104, the public electrically driven feed pump of No. 1 fired power generating unit of control recycles the override of regulating valve
Close, override is opened and cut off, can also include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 thermoelectricity pre-set
The public electrically driven feed pump of unit recycles the excision condition of regulating valve, the public electrically driven feed pump recycling of No. 1 fired power generating unit of control
Regulating valve is cut off.
The public electrically driven feed pump of No. 1 fired power generating unit recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and hold
The continuous time reaches the 4th preset time；
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 1 fired power generating unit；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 1 fired power generating unit and valve bit instruction deviation are more than
3rd preset percentage, and the duration reach the 4th preset time.3rd preset percentage can be 10%, but not only office
It is limited to this.
In addition, in above-mentioned steps 105, the public electrically driven feed pump of No. 2 fired power generating units of control recycles the override of regulating valve
Close, override is opened and cut off, can also include：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 thermoelectricitys pre-set
The public electrically driven feed pump of unit recycles the excision condition of regulating valve, the public electrically driven feed pump recycling of No. 2 fired power generating units of control
Regulating valve is cut off.
The public electrically driven feed pump of No. 2 fired power generating units recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and hold
The continuous time reaches the 4th preset time；3rd preset flow can be 50t/h, but be not only limited to this.
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 2 fired power generating units；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 2 fired power generating units and valve bit instruction deviation are more than
3rd preset percentage, and the duration reach the 4th preset time.
Corresponding to the embodiment of the method shown in above-mentioned Fig. 1, as shown in Fig. 2 the embodiment of the present invention provides a kind of thermal power generation
The control system of the public electrically driven feed pump of unit, including：The electronic water supply system 21 of thermal power generation unit, the first distributed AC servo system system
System controller 22, the second dcs controller 23, the first control button 24, the second control button 25；Thermal power generation
The electronic water supply system 21 of unit includes No. 1 fired power generating unit entrance electrically operated gate 211, No. 2 fired power generating unit entrance electrically operated gates 212, No. 1 fire
Group of motors outlet electrically operated gate 213, No. 2 fired power generating unit outlet electrically operated gates 214, the public electrically driven feed pump recycling of No. 1 fired power generating unit
The public electrically driven feed pump recycling regulating valve 216 of regulating valve 215, No. 2 fired power generating units and public electrically driven feed pump 217.
First dcs controller 22 connects No. 1 fired power generating unit entrance electrically operated gate 211, No. 2 thermal motors respectively
Group entrance electrically operated gate 212, No. 1 fired power generating unit outlet electrically operated gate 213, No. 2 fired power generating unit outlet electrically operated gates 214, No. 1 fired power generating units
Public electrically driven feed pump recycling regulating valve 215 and the public electrically driven feed pump recycling regulating valve 216 of No. 2 fired power generating units.
Second dcs controller 23 is connected with public electrically driven feed pump 217.
First control button 24 and the second control button 25 are connected, and with the first dcs controller 22 and
Two dcs controllers 23 are connected, and the first control button 24 is also connected with power circuit 40；First distributed AC servo system system
The system dcs controller 23 of controller 22 and second is communicated to connect.
In addition, as shown in figure 3, the electronic water supply system 21 of the thermal power generation unit also includes No. 1 fired power generating unit 218, No. 2 fire
Group of motors 219；The outlet of public electrically driven feed pump 217 exports electrically operated gate 213 and No. 2 thermal motors respectively through No. 1 fired power generating unit
Group outlet electrically operated gate 214 is connected with No. 1 fired power generating unit 218 and No. 2 fired power generating units 219.Before the public connection of electrically driven feed pump 217 one
Put pump 220；The entrance of fore pump 220 is electronic respectively through No. 1 fired power generating unit entrance electrically operated gate 211 and No. 2 fired power generating unit entrances
Door 212 is connected with No. 1 fired power generating unit oxygen-eliminating device 221 and No. 2 fired power generating unit oxygen-eliminating devices 222；No. 1 fired power generating unit oxygen-eliminating device 221 and 2
Number fired power generating unit oxygen-eliminating device 222 recycles regulating valve 215 and No. 2 thermoelectricitys respectively through the public electrically driven feed pump of No. 1 fired power generating unit
The public electrically driven feed pump recycling regulating valve 216 of unit is connected with the outlet of public electrically driven feed pump 217.
Further, as shown in figure 3, the control system of the public electrically driven feed pump of thermal power generation unit also includes action relay
Device 26；The two ends of actuating relay 26 are connected to the first relay normally open node 27 and the second relay normally open node 28；
Second relay normally open node 28 and the first dcs controller 22 and the second dcs controller 23
Connection；First relay normally open node 27 is connected with outside front-end control host computer 40.The front-end control host computer 40 can be with
DCS control programs are run, and DCS control interfaces etc. are shown, instruction is sent by running the host computer of DCS control programs, can be with
So that actuating relay 26 is powered, and by closing the first relay normally open node 27 and the second relay normally open node 28, hair
Go out process selecting instruction.
A kind of control system of the public electrically driven feed pump of thermal power generation unit provided in an embodiment of the present invention, is selected by flow
Select instruction, and whether met and set in advance by the condition of work of the control system for monitoring the public electrically driven feed pump of thermal power generation unit
The condition of work put, come the logic switching of the control system that completes to automatically control the public electrically driven feed pump of thermal power generation unit, and
Judge without people and control, it is to avoid when the very complicated that public electrically driven feed pump is manual operation when two units are public
And error in judgement easily causes the problem of system dangerous is run.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Apply specific embodiment in the present invention to be set forth the principle and embodiment of the present invention, above example
Explanation be only intended to help to understand the method and its core concept of the present invention；Simultaneously for those of ordinary skill in the art,
According to the thought of the present invention, it will change in specific embodiments and applications, in summary, in this specification
Appearance should not be construed as limiting the invention.
Claims (21)
1. a kind of control method of the public electrically driven feed pump of thermal power generation unit, it is characterised in that applied to a kind of thermal power generation
The control system of the public electrically driven feed pump of unit, the system includes：No. 1 fired power generating unit, No. 2 fired power generating units and public electronic give
Water pump；The outlet of the public electrically driven feed pump exports electrically operated gate respectively through No. 1 fired power generating unit and No. 2 fired power generating units export electricity
Dynamic door is connected with No. 1 fired power generating unit and No. 2 fired power generating units；The public electrically driven feed pump connects a fore pump；Before described
The entrance for putting pump is removed respectively through No. 1 fired power generating unit entrance electrically operated gate and No. 2 fired power generating unit entrance electrically operated gates with No. 1 fired power generating unit
Oxygen device and No. 2 fired power generating unit oxygen-eliminating device connections；No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices are respectively through 1
The public electrically driven feed pump recycling regulating valve of number fired power generating unit and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units with
The outlet connection of public electrically driven feed pump；
Methods described, including：
Receive the process selecting instruction of the public electrically driven feed pump of thermal power generation unit；The public electrically driven feed pump of thermal power generation unit
Control system also includes the first control button and the second control button；Process selecting instruction is controlled by the first control button and second
Button is concurrently depressed triggering；Pressed down simultaneously by two control buttons and control public electrically driven feed pump to be No. 1 fired power generating unit
With the switching of water in No. 2 fired power generating units；
Instructed according to the process selecting of the public electrically driven feed pump of the thermal power generation unit, it is determined that treating that the unit of water is No. 1 fire
Group of motors or No. 2 fired power generating units；
Whether the condition of work for monitoring the control system of the public electrically driven feed pump of thermal power generation unit meets the work pre-set
Condition；
If the work bar pre-set described in the condition of work satisfaction of the control system of the public electrically driven feed pump of thermal power generation unit
Part, and treat that the unit of water is No. 1 fired power generating unit, the startup and stopping of the public electrically driven feed pump are controlled, described No. 1 is controlled
The opening and closing of fired power generating unit entrance electrically operated gate, control No. 1 fired power generating unit to export the opening and closing of electrically operated gate, and
The override pass of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit, override is controlled to open and cut off；
If the work bar pre-set described in the condition of work satisfaction of the control system of the public electrically driven feed pump of thermal power generation unit
Part, and treat that the unit of water is No. 2 fired power generating units, the startup and stopping of the public electrically driven feed pump are controlled, described No. 2 are controlled
The opening and closing of fired power generating unit entrance electrically operated gate, control No. 2 fired power generating units to export the opening and closing of electrically operated gate, and
The override pass of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units, override is controlled to open and cut off；
The startup and stopping of the public electrically driven feed pump are controlled, including：
Permit if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the first startup pre-set
Perhaps condition, controls the public electrically driven feed pump to start；
Described first starts enabled condition, including：
No. 1 fired power generating unit deaerator level is higher than the first preset water level；
And No. 2 fired power generating unit entrance electrically operated gates are closed；
And No. 1 fired power generating unit entrance electrically operated gate is opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And fore pump journal bearing temperature is less than or equal to the first preset temperature；
And fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit is more than the first preset percentage, and No. 2 thermoelectricitys
The public electrically driven feed pump recycling regulating valve of unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure value；
The startup and stopping of the public electrically driven feed pump are controlled, including：
Permit if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the second startup pre-set
Perhaps condition, controls the public electrically driven feed pump to start；
Described second starts enabled condition, including：
No. 2 fired power generating unit deaerator levels are higher than the first preset water level；
And No. 1 fired power generating unit entrance electrically operated gate is closed；
And No. 2 fired power generating unit entrance electrically operated gates are opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And the fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And the fore pump journal bearing temperature is less than or equal to the first preset temperature；
And the fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units is more than the first preset percentage, and No. 1 thermoelectricity
The public electrically driven feed pump recycling regulating valve of unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure.
2. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 1, it is characterised in that described
The control system of the public electrically driven feed pump of thermal power generation unit also includes the first control button and the second control button；The flow
Selection instruction is concurrently depressed triggering by first control button and the second control button.
3. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The startup and stopping of the public electrically driven feed pump, including：
Stop if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the first protection pre-set
Only condition, controls the public electrically driven feed pump to stop；
The first protection stop condition, including：
No. 1 fired power generating unit entrance electrically operated gate is closed, and the duration reaches one first preset time；
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position feedback of No. 1 fired power generating unit is small
In the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches second
Preset time；
Or, No. 1 fired power generating unit oxygen-eliminating device liquid level is less than the second preset water level；
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and when continuing
Between reach the 3rd preset time；
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reaches the 5th preset time.
4. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The startup and stopping of the public electrically driven feed pump, including：
Stop if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the second protection pre-set
Only condition, controls the public electrically driven feed pump to stop；
The second protection stop condition, including：
No. 2 fired power generating unit entrance electrically operated gates are closed, and the duration reaches one first preset time；
Or, public electrically driven feed pump operation, and the public electrically driven feed pump recycling control valve position feedback of No. 2 fired power generating units is small
In the second preset percentage, and public electrically driven feed pump rate of discharge is less than the first preset flow, and the duration reaches second
Preset time；
Or, No. 2 fired power generating unit oxygen-eliminating device liquid levels are less than the second preset water level；
Or, public electrically driven feed pump operation, and public electrically driven feed pump lubrication pressure is less than the second default oil pressure, and when continuing
Between reach the 3rd preset time；
Or, public electrically driven feed pump grease pump stops completely, and the duration reaches the 4th preset time；
Or, public electrically driven feed pump thrust bearing temperature is more than the 4th preset temperature；
Or, public electrically driven feed pump box bearing temperature is more than the 5th preset temperature；
Or, public electrically driven feed pump inlet pressure is less than the first preset pressure, and the duration reaches the 5th preset time.
5. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing of No. 1 fired power generating unit entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
Entrance electrically operated gate unlocking condition, controls No. 1 fired power generating unit entrance electrically operated gate to open；
No. 1 fired power generating unit entrance electrically operated gate unlocking condition, including No. 2 fired power generating unit entrance electrically operated gates are closed.
6. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing of No. 2 fired power generating units entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
Entrance electrically operated gate unlocking condition, controls No. 2 fired power generating unit entrances electrically operated gate to open；
No. 2 fired power generating units entrance electrically operated gate unlocking condition, including No. 1 fired power generating unit entrance electrically operated gate are closed.
7. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing of No. 1 fired power generating unit entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
Entrance electrically operated gate closedown condition, controls No. 1 fired power generating unit entrance electrically operated gate to close；
No. 1 fired power generating unit entrance electrically operated gate closedown condition, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
8. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing of No. 2 fired power generating units entrance electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
Entrance electrically operated gate closedown condition, controls No. 2 fired power generating unit entrances electrically operated gate to close；
No. 2 fired power generating units entrance electrically operated gate closedown condition, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
9. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
No. 1 fired power generating unit exports the opening and closing of electrically operated gate, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
Electrically operated gate unlocking condition is exported, controls No. 1 fired power generating unit outlet electrically operated gate to open；
No. 1 fired power generating unit exports electrically operated gate unlocking condition, including：
No. 2 fired power generating unit outlet electrically operated gates are closed, and treat that the unit of water is No. 1 fired power generating unit.
10. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing that No. 2 fired power generating units export electrically operated gate are made, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
Electrically operated gate unlocking condition is exported, controls No. 2 fired power generating units outlet electrically operated gate to open；
No. 2 fired power generating units export electrically operated gate unlocking condition, including：
No. 1 fired power generating unit outlet electrically operated gate is closed, and treats that the unit of water is No. 2 fired power generating units.
11. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing that No. 1 fired power generating unit exports electrically operated gate are made, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
The chain closedown condition of electrically operated gate is exported, controls No. 1 fired power generating unit outlet electrically operated gate is chain to close；
No. 1 fired power generating unit exports the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
12. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The opening and closing that No. 2 fired power generating units export electrically operated gate are made, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
The chain closedown condition of electrically operated gate is exported, controls No. 2 fired power generating units outlet electrically operated gate is chain to close；
No. 2 fired power generating units export the chain closedown condition of electrically operated gate, including：
No. 1 fired power generating unit power source bus is in trip position, and No. 2 fired power generating unit power source bus are in trip position.
13. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
The override of public electrically driven feed pump recycling regulating valve closes condition, and the control public electrically driven feed pump of No. 1 fired power generating unit is followed again
Ring regulating valve override is closed；
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit closes condition, including：
It is No. 1 fired power generating unit to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow, and is held
The continuous time reaches the 4th preset time；
Or, it is No. 2 fired power generating units to treat the unit of water.
14. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
The override of public electrically driven feed pump recycling regulating valve closes condition, and the control public electrically driven feed pump of No. 2 fired power generating units is followed again
Ring regulating valve override is closed；
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units closes condition, including：
It is No. 2 fired power generating units to treat the unit of water, and public electronic entrance of water-supplying pump flow is more than one second preset flow, and is held
The continuous time reaches the 4th preset time；
Or, it is No. 1 fired power generating unit to treat the unit of water.
15. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
The override of public electrically driven feed pump recycling regulating valve opens condition, and the control public electrically driven feed pump of No. 1 fired power generating unit is followed again
Ring regulating valve override is opened；
The override of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit opens condition, including：
The out code that the public electrically driven feed pump of No. 1 fired power generating unit recycles regulating valve is not received.
16. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
The override of public electrically driven feed pump recycling regulating valve opens condition, and the control public electrically driven feed pump of No. 2 fired power generating units is followed again
Ring regulating valve override is opened；
The override of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units opens condition, including：
The out code that the public electrically driven feed pump of No. 2 fired power generating units recycles regulating valve is not received.
17. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 1 fired power generating unit pre-set
Public electrically driven feed pump recycles the excision condition of regulating valve, controls the public electrically driven feed pump recycling of No. 1 fired power generating unit
Regulating valve is cut off；
The public electrically driven feed pump of No. 1 fired power generating unit recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and when continuing
Between reach the 4th preset time；
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 1 fired power generating unit；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 1 fired power generating unit and valve bit instruction deviation are more than the 3rd
Preset percentage, and the duration reach the 4th preset time.
18. the control method of the public electrically driven feed pump of thermal power generation unit according to claim 2, it is characterised in that control
The override pass of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units, override is made to open and cut off, including：
If the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets No. 2 fired power generating units pre-set
Public electrically driven feed pump recycles the excision condition of regulating valve, controls the public electrically driven feed pump recycling of No. 2 fired power generating units
Regulating valve is cut off；
The public electrically driven feed pump of No. 2 fired power generating units recycles the excision condition of regulating valve, including：
Public electrically driven feed pump recirculation flow measurement and preset value deviation are more than one the 3rd preset flow, and when continuing
Between reach the 4th preset time；
Or, the public electrically driven feed pump recycling control valve position feedback data failure of No. 2 fired power generating units；
Or, public electronic entrance of water-supplying pump data on flows failure；
Or, the public electrically driven feed pump recycling control valve position feedback of No. 2 fired power generating units and valve bit instruction deviation are more than the 3rd
Preset percentage, and the duration reach the 4th preset time.
19. a kind of control system of the public electrically driven feed pump of thermal power generation unit, it is characterised in that including：Thermal power generation unit
Electronic water supply system, the first dcs controller, the second dcs controller, the first control button,
Second control button；The electronic water supply system of thermal power generation unit includes No. 1 fired power generating unit entrance electrically operated gate, No. 2 thermal motors
Group entrance electrically operated gate, No. 1 fired power generating unit outlet electrically operated gate, No. 2 fired power generating unit outlet electrically operated gates, No. 1 fired power generating units are public electronic
Feed pump recycling regulating valve, the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units and public electrically driven feed pump；
The first dcs controller connects No. 1 fired power generating unit entrance electrically operated gate, No. 2 fired power generating units respectively
Entrance electrically operated gate, No. 1 fired power generating unit outlet electrically operated gate, No. 2 fired power generating units outlet electrically operated gates, No. 1 fired power generating unit are public electronic to give
Water pump recycles regulating valve and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units；
The second dcs controller is connected with the public electrically driven feed pump；
First control button and the second control button series connection, and with the first dcs controller and second
Dcs controller is connected, and the first control button is also connected with power circuit；The first dcs control
Device processed and the communication connection of the second dcs controller；It is public electronic that control is pressed down simultaneously by two control buttons
Feed pump is the switching of water in No. 1 fired power generating unit and No. 2 fired power generating units；
The control system of the public electrically driven feed pump of thermal power generation unit, if for the public electrically driven feed pump of thermal power generation unit
The condition of work of control system meet the condition of work that pre-sets, and treat that the unit of water is No. 1 fired power generating unit, control institute
The startup and stopping of public electrically driven feed pump are stated, the opening and closing of No. 1 fired power generating unit entrance electrically operated gate are controlled, institute is controlled
The opening and closing that No. 1 fired power generating unit exports electrically operated gate are stated, and the control public electrically driven feed pump of No. 1 fired power generating unit is followed again
The override of ring regulating valve is closed, override is opened and cut off；
If the work bar pre-set described in the condition of work satisfaction of the control system of the public electrically driven feed pump of thermal power generation unit
Part, and treat that the unit of water is No. 2 fired power generating units, the startup and stopping of the public electrically driven feed pump are controlled, described No. 2 are controlled
The opening and closing of fired power generating unit entrance electrically operated gate, control No. 2 fired power generating units to export the opening and closing of electrically operated gate, and
The override pass of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units, override is controlled to open and cut off；
The control system of the public electrically driven feed pump of thermal power generation unit, the startup for controlling the public electrically driven feed pump
And stop, including：
Permit if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the first startup pre-set
Perhaps condition, controls the public electrically driven feed pump to start；
Described first starts enabled condition, including：
No. 1 fired power generating unit deaerator level is higher than the first preset water level；
And No. 2 fired power generating unit entrance electrically operated gates are closed；
And No. 1 fired power generating unit entrance electrically operated gate is opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And fore pump journal bearing temperature is less than or equal to the first preset temperature；
And fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 1 fired power generating unit is more than the first preset percentage, and No. 2 thermoelectricitys
The public electrically driven feed pump recycling regulating valve of unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure value；
The control system of the public electrically driven feed pump of thermal power generation unit, the startup for controlling the public electrically driven feed pump
And stop, including：
Permit if the condition of work of the control system of the public electrically driven feed pump of thermal power generation unit meets the second startup pre-set
Perhaps condition, controls the public electrically driven feed pump to start；
Described second starts enabled condition, including：
No. 2 fired power generating unit deaerator levels are higher than the first preset water level；
And No. 1 fired power generating unit entrance electrically operated gate is closed；
And No. 2 fired power generating unit entrance electrically operated gates are opened；
And No. 1 fired power generating unit outlet electrically operated gate and No. 2 fired power generating unit outlet electrically operated gates are closed；
And public electrically driven feed pump box bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump journal bearing temperature is less than or equal to the first preset temperature；
And public electrically driven feed pump thrust bearing temperature is less than or equal to the second preset temperature；
And the fore pump electric motor stator winding temperature is less than or equal to the 3rd preset temperature；
And the fore pump journal bearing temperature is less than or equal to the first preset temperature；
And the fore pump motor radial bearing temperature is less than or equal to the second preset temperature；
And the aperture of the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units is more than the first preset percentage, and No. 1 thermoelectricity
The public electrically driven feed pump recycling regulating valve of unit is completely closed；
And public electrically driven feed pump petrol station oil pressure is less than the first default oil pressure.
20. the control system of the public electrically driven feed pump of thermal power generation unit according to claim 19, it is characterised in that institute
Stating the electronic water supply system of thermal power generation unit also includes No. 1 fired power generating unit, No. 2 fired power generating units；The public electrically driven feed pump
Outlet exports electrically operated gate respectively through No. 1 fired power generating unit and No. 2 fired power generating units export electrically operated gate and No. 1 fired power generating unit and 2
The connection of number fired power generating unit；The public electrically driven feed pump connects a fore pump；The entrance of the fore pump is respectively through No. 1 thermoelectricity
Unit inlet electrically operated gate and No. 2 fired power generating unit entrance electrically operated gates connect with No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices
Connect；No. 1 fired power generating unit oxygen-eliminating device and No. 2 fired power generating unit oxygen-eliminating devices are respectively through No. 1 public electrically driven feed pump of fired power generating unit
Recycle regulating valve and the public electrically driven feed pump recycling regulating valve of No. 2 fired power generating units and the outlet of public electrically driven feed pump connects
Connect.
21. the control system of the public electrically driven feed pump of thermal power generation unit according to claim 20, it is characterised in that institute
Stating the control system of the public electrically driven feed pump of thermal power generation unit also includes actuating relay；The two ends of the actuating relay point
The first relay normally open node and the second relay normally open node are not connected with；The second relay normally open node and first point
Cloth control system controller and the connection of the second dcs controller；The first relay normally open node and front end
Control host computer connection.
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| CN201610074694.2A CN105508231B (en) | 2016-02-03 | 2016-02-03 | A kind of control method and system of the public electrically driven feed pump of thermal power generation unit |
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| CN106524119B (en) * | 2016-11-11 | 2019-02-01 | 华北电力科学研究院有限责任公司 | The control method and device of feedwater flow during runback |
| CN108132615B (en) * | 2017-12-27 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司西北分公司 | Logic locking method of unit public electric water supply pump control system |
| CN112524008B (en) * | 2020-11-20 | 2022-06-10 | 中国能源建设集团华东电力试验研究院有限公司 | Undisturbed switching control system and control method for electric feed pump |
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| CN101787969B (en) * | 2009-09-04 | 2013-03-27 | 东北电力科学研究院有限公司 | Numerical control system of minimum flow valve of governing feedwater pump and minimum flow control method thereof |
| CN102563612A (en) * | 2012-01-30 | 2012-07-11 | 浙江省电力设计院 | Method for directly starting steam-driven feed water pump of large-sized thermal power plant |
| CN202690402U (en) * | 2012-07-27 | 2013-01-23 | 甘肃大唐国际连城发电有限责任公司 | Control device for water feeding pump of thermal power plant |
| CN102878092B (en) * | 2012-10-16 | 2015-04-08 | 章礼道 | Novel energy-saving and speed-regulation electric water feeding pump system |
| CN103791485B (en) * | 2014-02-28 | 2015-04-22 | 国家电网公司 | Optimal control method of water supply system of thermal power generating unit |
| CN104100509B (en) * | 2014-04-04 | 2016-02-24 | 国家电网公司 | Electrically driven feedpump and steam feed pump paired running autocontrol method |
| CN205330945U (en) * | 2016-02-03 | 2016-06-22 | 华北电力科学研究院有限责任公司 | Public electric feed water pump's of thermal generator set control system |
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