CN105806012B - Gas power station recirculating cooling water system and its start-up and shut-down control method - Google Patents
Gas power station recirculating cooling water system and its start-up and shut-down control method Download PDFInfo
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- CN105806012B CN105806012B CN201410854654.0A CN201410854654A CN105806012B CN 105806012 B CN105806012 B CN 105806012B CN 201410854654 A CN201410854654 A CN 201410854654A CN 105806012 B CN105806012 B CN 105806012B
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- 239000000498 cooling water Substances 0.000 title claims abstract description 364
- 230000003134 recirculating effect Effects 0.000 title claims abstract description 239
- 238000000034 method Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 477
- 230000003111 delayed effect Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000003643 water by type Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 239000008400 supply water Substances 0.000 description 7
- 230000008676 import Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention provides a kind of gas power station recirculating cooling water system and its start-up and shut-down control method, the gas power station recirculating cooling water system includes：Two drag a recirculating cooling water system, one-to-one recirculating cooling water system, recirculating cooling water system return water main pipe, recirculating cooling water system water inlet main pipe, 12 mechanical draft towers, four water circulating pumps, the public water suction forebay of recirculated water and two recirculated water return water communicating doors.Through the invention, the automatic startup of gas power station recirculating cooling water system can be realized under gas power station recirculating cooling water system full cut-off state or under the starting state of part, original operating status when interference sections do not start；Being automatically stopped for gas power station recirculating cooling water system is realized under operation.
Description
Technical field
The present invention relates to gas power station cooling water technologies, especially with regard to a kind of gas power station circulating cooling water system
System and its start-up and shut-down control method.
Background technology
The effect of gas power station recirculating cooling water system is to send recirculated cooling water to condenser water side, to cool down steamer
Machine low pressure (LP) cylinder steam discharge, maintains the vacuum of condenser, steam/water circulating is enable to continue；In addition, recirculating cooling water system is also to open type
Cooling water system provides water source.But existing recirculating cooling water system can not realize circulating cooling water system under full cut-off state
The automatic startup of system, also can not realize being automatically stopped for recirculating cooling water system under operation, can not also be in circulating cooling
In the state that water system part starts, the automatic startup of recirculating cooling water system is realized, and original operating status can be interfered.
Invention content
A kind of gas power station recirculating cooling water system of offer of the embodiment of the present invention and its start-up and shut-down control method, in combustion gas
Under Circulating Cooling Water of Power Plant system full cut-off state or under the starting state of part, gas power station recirculating cooling water system is realized
It is automatic to start, original operating status when interference sections do not start；Gas power station circulating cooling is realized under operation
Water system is automatically stopped.
To achieve the goals above, the embodiment of the present invention provides a kind of gas power station recirculating cooling water system, described
Gas power station recirculating cooling water system includes：Two drag a recirculating cooling water system, one-to-one recirculating cooling water system, cycle cold
But water system return water main pipe, recirculating cooling water system water inlet main pipe, 12 mechanical draft towers, four water circulating pumps, recirculated water are public
Absorb water forebay and two recirculated water return water communicating doors altogether；
Recirculating cooling water system water inlet main pipe is separately connected one-to-one recirculating cooling water system and two drags a cycle cold
But the water inlet of water system, the recirculating cooling water system return water main pipe are separately connected one-to-one recirculating cooling water system and two drag
The water outlet of one recirculating cooling water system；Four water circulating pumps are connected to the recirculating cooling water system water inlet main pipe
On pipeline between the public water suction forebay of the recirculated water；6 mechanical draft towers are arranged in the public suction of the recirculated water
The side of water forebay, in addition 6 mechanical draft towers be arranged in the other side of the public water suction forebay of the recirculated water, Mei Geji
Power aeration tower is both connected between the public water suction forebay of the recirculated water and the recirculating cooling water system return water main pipe.
In one embodiment, the gas power station recirculating cooling water system further includes：System starts select button, follows
ACK button is completed in ring water pump operation quantity select button, subgroup control button, water filling, and two drag a recirculating cooling water system to one
Drag a recirculating cooling water system water filling button, one-to-one recirculating cooling water system to two drag a recirculating cooling water system water filling by
Button, water circulating pump throw standby button and water circulating pump programed logic operation button #1, #2, #3, #4.
In one embodiment, the gas power station recirculating cooling water system further includes：Four circulation-water pump electric machines are cold
But the low alarm switch of water flow is respectively connected to first circulation water pump, second circulation water pump, third water circulating pump and the 4th cycle
One of water pump.
To achieve the goals above, the embodiment of the present invention provides a kind of start-up and shut-down control method, is applied to above-mentioned combustion gas heat
Circulating cooling water of power plant system, which is characterized in that the start-up and shut-down control method includes：
Judge in four water circulating pumps with the presence or absence of the water circulating pump of operation；
If not, the startup selection request of user is received, according to opening for the selection for starting and request being selected to judge user
Flowing mode；
If user's Starting mode is to start under " two drag one " mode, judge to remove " two drag one " condenser cooling water import
Whether all valves are turned off except door and outlet portal；If not, sending out closing " two drag one " condenser cooling water access doors
And the valvular instruction of institute except outlet portal；
If so, judging that described two drag whether a recirculating cooling water system inner valve has turned on；If not, sending out unlatching
Described two drag the instruction of a recirculating cooling water system inner valve；
If user's Starting mode is to start under " one-to-one " mode, judge to remove " one-to-one " condenser cooling water import
Whether all valves are turned off except door and outlet portal；If not, sending out closing " one-to-one " condenser cooling water access doors
And the valvular instruction of institute except outlet portal；
If so, judging whether the one-to-one recirculating cooling water system inner valve has turned on；If not, sending out unlatching
The instruction of the one-to-one recirculating cooling water system inner valve；
If described two drag a recirculating cooling water system inner valve to have turned on or " one drags under " two drag one " mode
The one-to-one recirculating cooling water system inner valve has turned under one " mode, judges to preselect water circulating pump outlet hydraulic butterfly valve
Whether extremely predetermined aperture；If not, sending out out the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve；
If so, judging to preselect whether water circulating pump outlet hydraulic butterfly valve is not less than the predetermined aperture, and it is delayed 2 seconds；
If not, stopping to preselect the instruction that water circulating pump exports hydraulic butterfly valve in sending out；
If so, judging to preselect whether water circulating pump has run；If not, sending out the instruction for starting pre-selection water circulating pump；
If so, judge described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system whether water filling
It completes；
If so, judge water circulating pump outlet hydraulic butterfly valve whether standard-sized sheet, and the water circulating pump outlet main-piping pressure be
It is no to be greater than the set value, and described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system condenser water box to arrange
Whether close Buddhism；If not, send out open cycle exit of pump hydraulic butterfly valve, closes two and drag a recirculating cooling water system or one drag
One recirculating cooling water system condenser water box empties the instruction of door；
If so, judge whether " big the United Nations General Assembly " or " small " has put into or whether four water circulating pump interlockings have put into,
Or whether all water circulating pumps have run, and water circulating pump subgroup controls whether to have put into；If not, sending out as given an order：
Throw the control of water circulating pump subgroup；And throw " big the United Nations General Assembly " or " small ".
In one embodiment, the start-up and shut-down control method further includes：
Judge that water circulating pump subgroup controls whether to have dropped out and whether be delayed 10 seconds；If not, sending out water circulating pump operation
Number of units subtracts 1 and exits the instruction of water circulating pump subgroup control；
If so, judging to preselect whether water circulating pump outlet hydraulic butterfly valve aperture is less than predetermined number of degrees with respect；If not, sending out pass
Close the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve；
If so, judging to preselect whether water circulating pump has stopped, and preselect whether water circulating pump outlet hydraulic butterfly valve has closed；Such as
Fruit is no, sends out stopping pre-selection water circulating pump, and closes the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve；
If so, judging whether all water circulating pumps stop；
If all water circulating pumps stop, judging that water circulating pump is program-controlled and water circulating pump subgroup controls whether to have dropped out；
Exit that water circulating pump is program-controlled and the instruction of water circulating pump subgroup control if not, sending out.
In one embodiment, the start-up and shut-down control method further includes：Described two drag a recirculating cooling water system to described
The step of one-to-one recirculating cooling water system water filling, including：
Judge whether user presses " two drag one " in water filling button to " one-to-one " water filling button；
If so, judge whether one-to-one recirculating cooling water system condenser intake gate has been opened, and one-to-one circulating cooling
Whether water system condenser water box exhaust valve has been opened；The water inlet of one-to-one recirculating cooling water system condenser is opened if not, sending out
Door opens one-to-one recirculating cooling water system condenser return water door 20 seconds and opens one-to-one recirculating cooling water system condenser water
The instruction of room exhaust valve；
If so, judge described two drag a recirculating cooling water system to the one-to-one recirculating cooling water system water filling whether
It completes；
If so, judge whether one-to-one recirculating cooling water system condenser water box exhaust valve has closed, and one-to-one recycles
Whether cooling water system condenser return water door has been opened；One-to-one recirculating cooling water system condenser water box is closed if not, sending out
Exhaust valve and the instruction for opening one-to-one recirculating cooling water system condenser return water door.
In one embodiment, the start-up and shut-down control method further includes：The one-to-one recirculating cooling water system is to described
Two the step of dragging a recirculating cooling water system water filling, including：
Judge whether user presses " one-to-one " in water filling button to " two drag one " water filling button；
If so, judge that two drag whether a recirculating cooling water system condenser intake gate has been opened, and two drag a circulating cooling
Whether water system condenser water box exhaust valve has been opened；A recirculating cooling water system condenser is dragged to intake if not, sending out unlatching two
Door, unlatching two, which drag a recirculating cooling water system condenser return water door 20 seconds and open two, drags a recirculating cooling water system condenser water
The instruction of room exhaust valve；
If so, judging whether the one-to-one recirculating cooling water system drags a recirculating cooling water system water filling to described two
It completes；
If so, judge that two drag whether a recirculating cooling water system condenser water box exhaust valve has closed, and two drag a cycle
Whether cooling water system condenser return water door has been opened；If not, sending out closing two drags a recirculating cooling water system condenser water box
Exhaust valve simultaneously opens two instructions for dragging a recirculating cooling water system condenser return water door.
In one embodiment, the setting value is 0.2MPa.
In one embodiment, the predetermined number of degrees with respect is 30 degree.
In one embodiment, the aperture that the predetermined aperture is 15%.
It through the invention, can be real under gas power station recirculating cooling water system full cut-off state or under the starting state of part
The automatic startup of existing gas power station recirculating cooling water system, original operating status when interference sections do not start；It is running
Being automatically stopped for gas power station recirculating cooling water system is realized under state.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the gas power station recirculating cooling water system of the embodiment of the present invention；
Fig. 2 is the two of the embodiment of the present invention structural schematic diagram for dragging a recirculating cooling water system；
Fig. 3 is the structural schematic diagram of the one-to-one recirculating cooling water system of the embodiment of the present invention；
Fig. 4 is the start-up and shut-down control method flow diagram of the embodiment of the present invention one；
Fig. 5 is the start-up and shut-down control method flow diagram of the embodiment of the present invention two；
Fig. 6 is in the embodiment of the present invention, and two drag a recirculating cooling water system to one-to-one recirculating cooling water system water filling
Method flow diagram；
Fig. 7 is in the embodiment of the present invention, and one-to-one recirculating cooling water system drags a recirculating cooling water system water filling to two
Method flow diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of gas power station recirculating cooling water system, the combustion gas thermoelectricity
Factory's recirculating cooling water system includes：Two drag a recirculating cooling water system (two drag a unit), one-to-one recirculating cooling water system (one
Drag a unit), recirculating cooling water system return water main pipe 11, recirculating cooling water system intake 12,12 mechanical draft towers 13 of main pipe,
Four water circulating pumps, the public water suction forebay 15 of recirculated water and two recirculated water return water communicating doors 16.
Recirculating cooling water system water inlet main pipe 12 is separately connected one-to-one recirculating cooling water system water inlet 18 and two and drags one
The water inlet 17 of recirculating cooling water system, recirculating cooling water system return water main pipe 11 are separately connected one-to-one recirculating cooling water system
Water outlet 19 and two drags the water outlet 20 of a recirculating cooling water system.
As shown in Figure 1,14 for water circulating pump export hydraulic butterfly valve, four water circulating pumps be respectively water circulating pump 141,
Water circulating pump 142, water circulating pump 143 and water circulating pump 144, wherein water circulating pump 141 and water circulating pump 142 pump to be big, cycle
Water pump 143 and water circulating pump 144 are small pump, i.e., the power of water circulating pump 141 and water circulating pump 142 be more than water circulating pump 143 and
144 power of water circulating pump.
Water circulating pump 141, water circulating pump 142, water circulating pump 143 and water circulating pump 144 are connected to recirculated cooling water
On the pipeline that system is intake between main pipe 12 and the public water suction forebay of recirculated water 15.Water circulating pump 141, water circulating pump 142, cycle
The water inlet of water pump 143 and water circulating pump 144 connects recirculated water public water suction forebay 15, water circulating pump 141, water circulating pump 142,
The water outlet of water circulating pump 143 and water circulating pump 144 connects recirculating cooling water system water inlet main pipe 12.
In 12 mechanical draft towers 13, wherein 6 mechanical draft towers 13 are arranged the one of the public water suction forebay of recirculated water 15
Side (left side in Fig. 1), in addition 6 mechanical draft towers 13 be arranged in the other side of the public water suction forebay of the recirculated water 15, often
A mechanical draft tower 13 is both connected between the public water suction forebay 15 of recirculated water and the recirculating cooling water system return water main pipe 11.
As shown in Figure 1, gas power station recirculating cooling water system further includes：System starts select button 1, water circulating pump fortune
Line number amount select button 2, subgroup control button 3, water filling completion ACK button 4, water filling button 5 (including：Two drag a circulating cooling
Water system is cold to one-to-one recirculating cooling water system water filling button (" two drag one " to " one-to-one ") in Fig. 1 and one-to-one cycle
But water system drags a recirculating cooling water system water filling button (" one-to-one " to " two drag one ") in Fig. 1, water circulating pump to throw to two
Standby button 6 and water circulating pump programed logic operation button (#1, #2, #3, #4) 7.
As shown in Figure 1, gas power station recirculating cooling water system further includes：Four circulation-water pump electric machine cooling water flows are low
Alarm switch, including：The low alarm switch 21 of 1# circulation-water pump electric machine cooling water flows, 2# circulation-water pump electric machine cooling water flows are low
The low alarm switch 23 of alarm switch 22,3# circulation-water pump electric machine cooling water flows, the low report of 4# circulation-water pump electric machine cooling water flows
Alert switch 24.The low alarm switch 21 of 1# circulation-water pump electric machine cooling water flows connects water circulating pump 141, and 2# circulation-water pump electric machines are cold
But the low alarm switch 22 of water flow connects water circulating pump 142, and the low alarm switch 23 of 3# circulation-water pump electric machine cooling water flows connects
Water circulating pump 143, the low alarm switch 24 of 4# circulation-water pump electric machine cooling water flows connect water circulating pump 144.
The effect of water circulating pump is to provide pressure head for recirculated cooling water, and driving recirculated cooling water flows through gas power station condensing
The heat exchanger tube of device cools down turbine discharge, and provides water source to open cooling water system simultaneously.The effect of mechanical draft tower 13 is
Air stream is formed by mechanical draft tower wind turbine, the cooling water return of higher heat is cooled down.Forebay 15 absorb water as machine
The middle transition container of power aeration tower and water circulating pump, absorbs the water of mechanical draft tower, and is supplied to water circulating pump.Trash
The phenomenon that being to prevent larger impurity foreign matter from entering water circulating pump, leading to shaft of circulating water pump bite or locking.Recirculated cooling water
It is driven by water circulating pump, reaches heat exchange tube of condenser beam by recirculated cooling water pipeline, cooling turbine discharge simultaneously makes condensing
High vacuum is formed inside device, and provides water source, condenser cooling water return water and open type cooling to open cooling water system simultaneously
Water return water is back to mechanical draft tower by cooling water return pipe and is cooled, and finally converges into water suction forebay, then through removing contamination
After machine intercepts larger impurity foreign matter, water circulating pump entrance is reached.The gas power station water circulating pump shares 4,2 big flows
Pump, 2 low-capacity pumps.According to parameters such as environment temperature, unit load and recirculated water supply water temperatures, determine to use big flow or small
The operation number of units of flow pump and water circulating pump.
Fig. 2 is two structural schematic diagrams for dragging a recirculating cooling water system, as shown in Fig. 2, two drag a recirculating cooling water system
Including：Condenser, four condenser circulating water inlet pipeline 21-24, four condenser circulating water water return pipeline 25-28, two drag
One opened water automatic water filter 29, circulating water inlet road 30, recirculated water water return pipeline 31.In addition, being also provided in Fig. 2 multiple
(wherein M zero indicates electrically operated valve to valve, is arranged in four condenser circulating water inlet pipeline 21-24, four condenser circulating waters
Water return pipeline 25-28 and two is dragged in the internal duct of an opened water automatic water filter 29), pressure-measuring-point, temperature point etc., no
It repeats one by one again.
Fig. 3 is the structural schematic diagram of one-to-one recirculating cooling water system, as shown in figure 3, one-to-one recirculating cooling water system
Including：Condenser, four condenser circulating water inlet pipeline 21-24, four condenser circulating water water return pipeline 25-28, two drag
One opened water automatic water filter 29, circulating water inlet road 30, recirculated water water return pipeline 31.In addition, being also provided in Fig. 2 multiple
Valve is (whereinIt indicates electrically operated valve, is arranged in four condenser circulating water inlet pipeline 21-24, four condenser circulating waters
Water return pipeline 25-28 and two is dragged in the internal duct of an opened water automatic water filter 29), pressure-measuring-point, temperature point etc., no
It repeats one by one again.
In Fig. 1 to system shown in Fig. 3,Indicate electrically operated valve.
As shown in figure 4, an embodiment of the present invention provides a kind of start-up and shut-down control methods, using gas power station shown in FIG. 1
Recirculating cooling water system, the start-up and shut-down control method include：
S401：Judge in four water circulating pumps with the presence or absence of the water circulating pump of operation；If four recirculated waters
The water circulating pump that there is operation in pump, carries out S415, if not, carrying out S402.
S402：Judge the Starting mode of the selection of user.
This is a branching step, the gas power station recirculating cooling water system be divided into two drag a recirculating cooling water system and
One-to-one recirculating cooling water system two systems, therefore system has also been made in program controls and starts logic and starts select button
2”.Starting select button by the system for clicking gas power station recirculating cooling water system shown in FIG. 1, " two drag to select to start
One " or " one-to-one " recirculating cooling water system.
When it is implemented, the startup selection for receiving user is needed to ask, the selection of user is judged according to startup selection request
Starting mode.User can select to start under " two drag one " mode, can also select to start under " one-to-one " mode.
If user's Starting mode is to start under " two drag one " mode, S403 to S406 is executed.
S403：Judge in addition to " two drag one " condenser cooling water access doors and outlet portal (8 doors) all valves whether
It is turned off.Valve in addition to " two drag one " condenser cooling water access doors and outlet portal be turned off including：
" one-to-one " condenser recirculated cooling water import and export door has closed (8), and recirculated cooling water is cold to " one-to-one " open type
But water automatic water filter entrance door and bypass door have been closed, and " one-to-one " open type cooling water return water to recirculating cooling water system door has closed
(2), recirculated cooling water to the total door of " one-to-one " unit condenser water supply have closed, and recirculated cooling water to " two drag one " open type cools down
Water automatic water filter entrance door and bypass door have been closed, and " two drag one " open type cooling water return water to recirculating cooling water system door has closed (2
It is a), recirculated cooling water to the total door of " two drag one " unit condenser water supply has closed, and cooling water return communicating door has closed (2),
Pyller has closed tower bypass door on (12) all cooling water returns and has closed (4) on all cooling water returns, and 4 are followed
Ring exit of pump valve has closed (4).
If the valve in addition to " two drag one " condenser cooling water access doors and outlet portal is not to be turned off, need into
Row S404 sends out the valvular instruction of institute except closing " two drag one " condenser cooling water access doors and outlet portal, is removed with closing
All valves except " two drag one " condenser cooling water access doors and outlet portal.The instruction includes：
Close the instruction of " one-to-one " condenser recirculated cooling water import and export door；
Close instruction of the recirculated cooling water to " one-to-one " open type cooling water automatic water filter entrance door and bypass door；
Close instruction of " one-to-one " the open type cooling water return water to recirculating cooling water system door；
Recirculated cooling water to " one-to-one " unit condenser is closed to supply water the instruction of total door；
Close instruction of the recirculated cooling water to " two drag one " open type cooling water automatic water filter entrance door and bypass door；
Close instruction of " two drag one " the open type cooling water return water to recirculating cooling water system door；
Recirculated cooling water to " two drag one " unit condenser is closed to supply water the instruction of total door；
Close the instruction of cooling water return communicating door；
Close the instruction of pyller on all cooling water returns；
Close the instruction of tower bypass door on all cooling water returns；
Close the instruction of 4 water circulating pump outlet valves.
If the valve in addition to " two drag one " condenser cooling water access doors and outlet portal is turned off, S405 is carried out.
S405：Judge that described two drag whether a recirculating cooling water system inner valve has turned on.
That is, " two drag one " unit recirculated cooling water to condenser supplies water, total door has been opened, " two drag one " unit recirculated cooling water
It has been opened to condenser intake gate, return water door (8), " two drag one " unit tower basin corresponds to pyller on cooling water return (6)
It has been opened that, " two drag one " unit tower basin corresponds to cooling water return bypass door (2) and opened, " two drag one " unit condenser hydroecium
Exhaust valve (8) has been opened.
If two drag a recirculating cooling water system inner valve not to be all turned on, into S406, sends out unlatching described two and drag
The instruction of one recirculating cooling water system inner valve drags the recirculating cooling water system inner valve, the instruction to include to open two：
" two drag one " unit recirculated cooling water to condenser is opened to supply water the instruction of total door；
Open instruction of " two drag one " the unit recirculated cooling water to condenser intake gate, return water door；
Open the instruction that " two drag one " unit tower basin corresponds to pyller on cooling water return；
Open the instruction that " two drag one " unit tower basin corresponds to cooling water return bypass door；
Open the instruction of " two drag one " unit condenser hydroecium exhaust valve.
If user's Starting mode is to start under " two drag one " mode, S407 to S410 is executed.
S407：Judge in addition to " one-to-one " condenser cooling water access doors and outlet portal (8 doors) all valves whether
It is turned off.Valve in addition to " one-to-one " condenser cooling water access doors and outlet portal be turned off including：
" two drag one " condenser recirculated cooling water import and export door has closed (8), and recirculated cooling water is cold to " two drag one " open type
But water automatic water filter entrance door and bypass door have been closed, and " two drag one " open type cooling water return water to recirculating cooling water system door has closed
(2), recirculated cooling water to the total door of " two drag one " unit condenser water supply have closed, and recirculated cooling water to " one-to-one " open type cools down
Water automatic water filter entrance door and bypass door have been closed, and " one-to-one " open type cooling water return water to recirculating cooling water system door has closed (2
It is a), recirculated cooling water to the total door of " one-to-one " unit condenser water supply has closed, and cooling water return communicating door has closed (2),
Pyller has closed tower bypass door on (12) all cooling water returns and has closed (4) on all cooling water returns, and 4 are followed
Ring exit of pump valve has closed (4).
If the valve in addition to " one-to-one " condenser cooling water access doors and outlet portal is not to be turned off, need into
Row S408 sends out the valvular instruction of institute except closing " one-to-one " condenser cooling water access doors and outlet portal, is removed with closing
All valves except " one-to-one " condenser cooling water access doors and outlet portal.The instruction includes：
Close the instruction of " two drag one " condenser recirculated cooling water import and export door；
Close instruction of the recirculated cooling water to " two drag one " open type cooling water automatic water filter entrance door and bypass door；
Close instruction of " two drag one " the open type cooling water return water to recirculating cooling water system door；
Recirculated cooling water to " two drag one " unit condenser is closed to supply water the instruction of total door；
Close instruction of the recirculated cooling water to " one-to-one " open type cooling water automatic water filter entrance door and bypass door；
Close instruction of " one-to-one " the open type cooling water return water to recirculating cooling water system door；
Recirculated cooling water to " one-to-one " unit condenser is closed to supply water the instruction of total door；
Close the instruction of cooling water return communicating door；
Close the instruction of pyller on all cooling water returns；
Close the instruction of tower bypass door on all cooling water returns；
Close the instruction of 4 water circulating pump outlet valves.
If the valve in addition to " one-to-one " condenser cooling water access doors and outlet portal is turned off, S405 is carried out.
S409：Judge whether the one-to-one recirculating cooling water system inner valve has turned on.
That is, " one-to-one " unit recirculated cooling water to condenser supplies water, total door has been opened, " one-to-one " unit recirculated cooling water
It has been opened to condenser intake gate, return water door (8), " one-to-one " unit tower basin corresponds to pyller on cooling water return (6)
It has been opened that, " one-to-one " unit tower basin corresponds to cooling water return bypass door (2) and opened, " one-to-one " unit condenser hydroecium
Exhaust valve (8) has been opened.
If one-to-one recirculating cooling water system inner valve is not all turned on, into S410, sends out unlatching described one and drag
The instruction of one recirculating cooling water system inner valve, to open one-to-one recirculating cooling water system inner valve, which includes：
" one-to-one " unit recirculated cooling water to condenser is opened to supply water the instruction of total door；
Open instruction of " one-to-one " the unit recirculated cooling water to condenser intake gate, return water door；
Open the instruction that " one-to-one " unit tower basin corresponds to pyller on cooling water return；
Open the instruction that " one-to-one " unit tower basin corresponds to cooling water return bypass door；
Open the instruction of " one-to-one " unit condenser hydroecium exhaust valve.
If described two drag a recirculating cooling water system inner valve to have turned on or " one drags under " two drag one " mode
The one-to-one recirculating cooling water system inner valve has turned under one " mode, carries out S411.
S411：Judge to preselect water circulating pump outlet hydraulic butterfly valve whether extremely predetermined aperture.In one embodiment, described predetermined
The aperture that aperture is 15%.
If preselecting water circulating pump outlet hydraulic butterfly valve without to predetermined aperture, carrying out S412, sending out out pre-selection recirculated water
The instruction of pump discharge hydraulic butterfly valve exports hydraulic butterfly valve to open pre-selection water circulating pump.
If preselecting water circulating pump outlet hydraulic butterfly valve to predetermined aperture, S413 is carried out.
S413：Judge to preselect whether water circulating pump outlet hydraulic butterfly valve is not less than the predetermined aperture, and is delayed 2 seconds.
If preselecting water circulating pump outlet hydraulic butterfly valve is less than the predetermined aperture, or pre-selection water circulating pump exports hydraulic control
Butterfly valve was not less than the delay of the predetermined aperture less than 2 seconds, then carried out S414, stopped to preselect water circulating pump outlet hydraulic control butterfly in sending out
The instruction of valve.
If preselecting water circulating pump outlet hydraulic butterfly valve is not less than the predetermined aperture, and is delayed 2 seconds, S415 is carried out.
S415：Judge to preselect whether water circulating pump has run.
If pre-selection water circulating pump has not been run, S416 is carried out, sends out the instruction for starting pre-selection water circulating pump, to start
Preselect water circulating pump.
If pre-selection water circulating pump has been run, S417 is carried out.
S417 judges that described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system whether water filling is complete
At.
If two drag a recirculating cooling water system or one-to-one recirculating cooling water system water filling to complete, S418 is carried out.
S418：Judge water circulating pump outlet hydraulic butterfly valve whether standard-sized sheet, and the water circulating pump outlet main-piping pressure whether
It is greater than the set value, and described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system condenser water box to empty
Whether door has closed.In one embodiment, the setting value is 0.2MPa.
If cannot fully meet：Water circulating pump exports hydraulic butterfly valve standard-sized sheet, and the water circulating pump exports main-piping pressure
It is greater than the set value, and described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system condenser water box to empty
Men Junyi is closed, and carries out S419, sends out open cycle exit of pump hydraulic butterfly valve, closes two and a recirculating cooling water system or one-to-one is dragged to follow
Ring cooling water system condenser water box empties the instruction of door, with open cycle exit of pump hydraulic butterfly valve, closes two and drags a circulating cooling
Water system empties door with one-to-one recirculating cooling water system condenser water box.
If water circulating pump exports hydraulic butterfly valve standard-sized sheet, and water circulating pump outlet main-piping pressure is greater than the set value, and
Described two, which drag a recirculating cooling water system or the one-to-one recirculating cooling water system condenser water box to empty Men Junyi, closes, and carries out
S420。
S420：Judge whether " big the United Nations General Assembly " or " small " has put into or whether four water circulating pump interlockings have put into, or
Whether all water circulating pumps have run, and water circulating pump subgroup controls whether to have put into.
If cannot meet：" big the United Nations General Assembly " or " small " has put into or four water circulating pump interlockings have been put into, or all
Water circulating pump has been run, and the control of water circulating pump subgroup has been put into, then enters S421, send out as given an order：Throw water circulating pump
Subgroup controls；And throw " big the United Nations General Assembly " or " small ".Herein, if pre-selection water circulating pump is big pump, " big the United Nations General Assembly " is thrown, if pre-selection
Water circulating pump is small pump, then throws " small ".
Herein it should be noted that in Fig. 1, the power of water circulating pump 141 and water circulating pump 142 is more than water circulating pump 143
And 144 power of water circulating pump, " big the United Nations General Assembly " state powerful water circulating pump and couple powerful water circulating pump, i.e. water circulating pump
141 water circulating pumps 142." small " the low power water circulating pump of statement couples low power water circulating pump, i.e. water circulating pump
143 water circulating pumps 144.
By Fig. 4 description it is found that method shown in Fig. 4 each step, first judge feed back whether receive, if receiving after
Continuous next step；If do not received, instruction is sent out, waits to be feedback receive.
In one embodiment, as shown in figure 5, the start-up and shut-down control method of the present invention further includes：Stop step, the stopping step
Including：
S501：Judge that water circulating pump subgroup controls whether to have dropped out and whether be delayed 10 seconds.
If the control of water circulating pump subgroup is not exited, or is had dropped out but be delayed less than 10 seconds, into S502, cycle is sent out
Water pump operation number of units subtracts 1 and exits the instruction of water circulating pump subgroup control.
If water circulating pump subgroup controls whether to have dropped out and whether be delayed 10 seconds, S503 is carried out.
S503：Judge to preselect whether water circulating pump outlet hydraulic butterfly valve aperture is less than predetermined number of degrees with respect.In one embodiment, institute
It is 30 degree to state predetermined number of degrees with respect.
If preselecting water circulating pump outlet hydraulic butterfly valve aperture is not less than predetermined number of degrees with respect, into S504, closing pre-selection is sent out
Water circulating pump exports the instruction of hydraulic butterfly valve.
If preselecting water circulating pump outlet hydraulic butterfly valve aperture is less than predetermined number of degrees with respect, S505 is carried out.
S505：Judge to preselect whether water circulating pump has stopped, and preselects whether water circulating pump outlet hydraulic butterfly valve has closed.
If pre-selection water circulating pump does not stop, and preselects water circulating pump outlet hydraulic butterfly valve and does not close, or pre-selection water circulating pump
Do not stop, pre-selection water circulating pump outlet hydraulic butterfly valve has closed, or pre-selection water circulating pump has stopped, and preselects water circulating pump and export hydraulic control
Butterfly valve does not close, into S506, sends out stopping pre-selection water circulating pump, and close the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve.
If pre-selection water circulating pump has stopped, and preselects water circulating pump outlet hydraulic butterfly valve and closed, S507 is carried out.
S507：Judge whether all water circulating pumps stop.
If there is any water circulating pump is run, then terminate the stopping step of the present invention.
If all water circulating pumps stop, into S508.
S508：Judge that water circulating pump is program-controlled and water circulating pump subgroup controls whether to have dropped out.
If water circulating pump is program-controlled and the control of water circulating pump subgroup is not exited, S509 is carried out, sends out and exits water circulating pump journey
The instruction of control and the control of water circulating pump subgroup.If water circulating pump is program-controlled and the control of water circulating pump subgroup is exited, terminate the present invention
Stopping step.
As shown in fig. 6, the start-up and shut-down control method of the present invention further includes：Described two drag a recirculating cooling water system to described one
The step of dragging a recirculating cooling water system water filling, specifically includes：
S601：Judge whether user presses " two drag one " in water filling button to " one-to-one " water filling button.
S602：If user presses " two drag one " in water filling button to " one-to-one " water filling button, judge that one-to-one follows
Whether ring cooling water system condenser intake gate has been opened, and whether one-to-one recirculating cooling water system condenser water box exhaust valve
It opens.
If not, carrying out S603, sends out and open one-to-one recirculating cooling water system condenser intake gate, unlatching one-to-one follows
Ring cooling water system condenser return water door 20 seconds and the instruction for opening one-to-one recirculating cooling water system condenser water box exhaust valve.
S604：If one-to-one recirculating cooling water system condenser intake gate has been opened, and one-to-one recirculating cooling water system
Condenser water box exhaust valve has been opened, and judges that described two drag a recirculating cooling water system to be noted to the one-to-one recirculating cooling water system
Whether water is completed.
S605：If two drag a recirculating cooling water system to be completed to the one-to-one recirculating cooling water system water filling, judge
Whether one-to-one recirculating cooling water system condenser water box exhaust valve has closed, and one-to-one recirculating cooling water system condenser return water
Whether door has been opened.
If not, carrying out S606, sends out and close one-to-one recirculating cooling water system condenser water box exhaust valve and open one
Drag the instruction of a recirculating cooling water system condenser return water door.
As shown in fig. 7, the start-up and shut-down control method of the present invention further includes：The one-to-one recirculating cooling water system is to described two
The step of dragging a recirculating cooling water system water filling, specifically includes：
S701：Judge whether user presses " one-to-one " in water filling button to " two drag one " water filling button.
S702：If user presses " one-to-one " in water filling button to " two drag one " water filling button, judge that one-to-one follows
Whether ring cooling water system condenser intake gate has been opened, and whether one-to-one recirculating cooling water system condenser water box exhaust valve
It opens.
If not, carrying out S703, sends out unlatching two and a recirculating cooling water system condenser intake gate, unlatching two is dragged to drag one to follow
Ring cooling water system condenser return water door 20 seconds and open two instructions for dragging a recirculating cooling water system condenser water box exhaust valve.
S704：If two drag a recirculating cooling water system condenser intake gate to open, and two drag a recirculating cooling water system
Condenser water box exhaust valve has been opened, and judges that the one-to-one recirculating cooling water system drags a recirculating cooling water system to note to described two
Whether water is completed.
S705：If one-to-one recirculating cooling water system drags a recirculating cooling water system water filling to complete to described two, judge
Two drag whether a recirculating cooling water system condenser water box exhaust valve has closed, and two drag a recirculating cooling water system condenser return water
Whether door has been opened.
If not, carrying out S706, sends out closing two and drag a recirculating cooling water system condenser water box exhaust valve and open two
Drag the instruction of a recirculating cooling water system condenser return water door.
The start-up and shut-down control method (program control start logic) of the gas power station recirculating cooling water system of the present invention includes
Allow the condition before starting：1. the public water suction the water level of the frontal pool of recirculated cooling water is greater than the set value (- 1.5m)；2. preselecting water circulating pump
Motor cooling water inlet flow is not low.After meeting these conditions, the step of start-up and shut-down control method of the present invention, can carry out.
The gas power station recirculating cooling water system of the present invention is provided with " two drag one " and " one-to-one " system water filling is complete
At ACK button.When startup step sequence is carried out to S417, power plant operations staff is waited for judge " two drag one " system or " one-to-one "
It after the completion of system water filling, clicks corresponding water filling and completes ACK button, start step sequence and continue.
The gas power station recirculating cooling water system of the present invention, which is provided with, opens pump operation quantity select button.By clicking this
Button selects the method for operation of water circulating pump, including " single pump operation ", " double pump operation ", " three pump operations " and " four pump operations "
These four modes.This selection is embodied in S415 for the first time, this step is to start the pre-selection pump of respective numbers, corresponding in S418 standard-sized sheets
The outlet hydraulic butterfly valve of the pre-selection pump of quantity.
The gas power station recirculating cooling water system of the present invention is provided with subgroup control button.At subgroup control button midpoint
Choosing pre-selection water circulating pump, including No. 3 No. 1 pump of pre-selection, No. 2 pumps of pre-selection and pre-selection pumps, preselect No. 4 pumps.This selection embodies for the first time
In S411, the instruction of this step is to open pre-selection pump discharge hydraulic butterfly valve, and open the outlet electrically operated gate of pre-selection pump in S415.Separately
Outside, the interlocking between pump operation quantity and four pump programmed logics throws standby function and controls the programmed logic for calling pump by subgroup
To realize.
The start-up and shut-down control method of the gas power station recirculating cooling water system of the present invention proceeds to a certain step, and not receiving should have
Feedback signal when, programed logic can rest on the step, wait for manual operation.Power plant operations staff can find current fortune
Row step sequence unreceived feedback signal, artificially judges whether unreceived feedback signal influences programed logic and continue to hold
Row.If the feedback signal does not influence continuing for present procedure control logic, operations staff can operate leapfrog action and continue
The execution of programed logic；If the feedback signal influences present procedure control logic and continues, operations staff can be with
According to the unsatisfied feedback signal of each found, investigation problem is targetedly gone, until receiving the feedback signal, is continued
Execute programed logic.
The programed logic startup step sequence of the gas power station recirculating cooling water system of the present invention, which can automatically engage, to be followed
Ring water pump interlocks, this is embodied in S420.Interlocking input after, when have water circulating pump run and recirculating cooling water system pressure be less than certain
When definite value；It, can be with another water circulating pump of interlocked startup, to ensure recirculated cooling water or when thering is any water circulating pump to trip
System main-piping pressure is normal.In addition, the interlock method automatically engaged in the S420 of the start-up and shut-down control method of the present invention is " big connection
Greatly " or " small ", " four interlockings " are manually put into after judging current operating situation by operations staff.
The interlocking of the gas power station recirculating cooling water system of the present invention throws standby mode and is divided into " four interlockings ", " big the United Nations General Assembly "
" small " three kinds of modes." four interlockings " refers to the sequence pumped according to #1, #2, #3, #4 between being pumped at four if input
Interlocked startup under endless form；" big the United Nations General Assembly " refers to the interlocked startup between the big pumps of #3 and #4 if input；" small " is if throw
Enter, refers to the interlocked startup between the small pumps of #1 and #2." four interlocking " be between " big the United Nations General Assembly ", " small " it is interlocking,
Mean that a kind of input of mode can cut off another mode.It is two big to pump while running, it is automatic to cut off " big the United Nations General Assembly " interlocking
Mode；It is two small to pump while running, it is automatic to cut off " small " interlock method；Four pumps when running, cut off " four automatically simultaneously
Interlocking " mode.
It is program-controlled to " one-to-one " system water filling that the gas power station recirculating cooling water system of the present invention is provided with " two drag one "
Button and " one-to-one " are to " two drag one " system water filling programmed button.When in " two drag one " or " one-to-one " recirculating cooling water system
Only side is run, and when other side recirculating cooling water system prepares to start, is completed ACK button in conjunction with artificial recharge, is realized fortune
The function of the program-controlled water filling of row lateral inoperative side recirculating cooling water system.
In the start-up and shut-down control method of gas power station recirculating cooling water system of the present invention, subgroup control is exited in S501 first
System, and current operating circulating water pump number of units is subtracted one.Exiting subgroup control can make the interlock of water circulating pump temporarily disappear
It loses, avoids stopping preselecting to pump that connection is caused to open phenomenon.Current operation is pumped into number of units and subtracts one so that operation pump number of units is selected with pump operation quantity
It selects number of units to be consistent, avoids causing unnecessary termination of pumping to act when input subgroup control next time.
Four big functions may be implemented in the start-up and shut-down control method of the present invention：The first, under recirculating cooling water system full cut-off state,
Realize the automatic startup of recirculating cooling water system；And under operation, being automatically stopped for recirculating cooling water system is realized.The
Two, it in the state that recirculating cooling water system part starts, realizes the automatic startup of recirculating cooling water system, and does not interfere original
Operating status.Third, when programed logic (start-up and shut-down control method) run to a certain step when, condition is unsatisfactory for, if artificially
Judge that the condition can ignore that, the operation that leapfrog action continues programed logic can be carried out manually, until step sequence finishes.The
Four, when only having side to run in " two drag one " or " one-to-one " recirculating cooling water system, other side recirculating cooling water system prepares
When startup, ACK button is completed in conjunction with artificial recharge, realizes the operation program-controlled water filling of lateral inoperative side recirculating cooling water system
Function.5th, it by subgroup control button, realizes the program-controlled interlocking started between logic of four water circulating pumps and throws standby work(
Can, and the characteristics of divide high-capacity pump, low-capacity pump in conjunction with water circulating pump, increase " big the United Nations General Assembly " for its method of operation, " small
Join small " interlocking throw standby function.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed 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 a box or multiple boxes.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above example
Explanation be merely used to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (8)
1. a kind of gas power station recirculating cooling water system, which is characterized in that the gas power station recirculating cooling water system
Including：Two drag a recirculating cooling water system, one-to-one recirculating cooling water system, recirculating cooling water system return water main pipe, cycle cold
But water system water inlet main pipe, 12 mechanical draft towers, four water circulating pumps, the public water suction forebay of recirculated water and two recirculated waters return
Water communicating door；
Recirculating cooling water system water inlet main pipe is separately connected one-to-one recirculating cooling water system and two drags a recirculated cooling water
The water inlet of system, the recirculating cooling water system return water main pipe are separately connected one-to-one recirculating cooling water system and two drag one to follow
The water outlet of ring cooling water system；Four water circulating pumps are connected to the recirculating cooling water system water inlet main pipe and institute
It states on the pipeline between the public water suction forebay of recirculated water；6 mechanical draft towers are arranged before the public water suction of the recirculated water
The side in pond, in addition 6 mechanical draft towers be arranged in the other side of the public water suction forebay of the recirculated water, each machine power is logical
Wind tower is both connected between the public water suction forebay of the recirculated water and the recirculating cooling water system return water main pipe；It is followed described in four
The water inlet of ring water pump connects the public water suction forebay of recirculated water, and the water outlet of four water circulating pumps connects the cycle
Cooling water system water inlet main pipe；
The gas power station recirculating cooling water system further includes：System starts select button, and water circulating pump runs quantity choosing
Button, subgroup control button are selected, ACK button is completed in water filling, and two drag a recirculating cooling water system to one-to-one circulating cooling water system
System water filling button, one-to-one recirculating cooling water system drag a recirculating cooling water system water filling button, water circulating pump to throw standby presses to two
Button and water circulating pump programed logic operation button #1, #2, #3, #4；
The gas power station recirculating cooling water system further includes：The low alarm of four circulation-water pump electric machine cooling water flows is opened
It closes, is respectively connected to first circulation water pump, second circulation water pump, one of third water circulating pump and the 4th water circulating pump.
2. a kind of start-up and shut-down control method, is applied to gas power station recirculating cooling water system described in claim 1, feature exists
In the start-up and shut-down control method includes：
Judge in four water circulating pumps with the presence or absence of the water circulating pump of operation；
If not, the startup selection request of user is received, according to the startup side for starting selection request and judging the selection of user
Formula；
If user's Starting mode is to start under " two drag one " mode, judge except " two drag one " condenser cooling water access doors and
Whether all valves are turned off except outlet portal；If not, sending out closing " two drag one " condenser cooling water access doors and going out
The valvular instruction of institute except mouth door；
If so, judging that described two drag whether a recirculating cooling water system inner valve has turned on；If not, sending out described in unlatching
Two drag the instruction of a recirculating cooling water system inner valve；
If user's Starting mode is to start under " one-to-one " mode, judge except " one-to-one " condenser cooling water access doors and
Whether all valves are turned off except outlet portal；If not, sending out closing " one-to-one " condenser cooling water access doors and going out
The valvular instruction of institute except mouth door；
If so, judging whether the one-to-one recirculating cooling water system inner valve has turned on；If not, sending out described in unlatching
The instruction of one-to-one recirculating cooling water system inner valve；
If described two drag a recirculating cooling water system inner valve to have turned on or at " one-to-one " under " two drag one " mode
The one-to-one recirculating cooling water system inner valve has turned under mode, judges whether preselect water circulating pump outlet hydraulic butterfly valve
To predetermined aperture；If not, sending out out the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve；
If so, judging to preselect whether water circulating pump outlet hydraulic butterfly valve is not less than the predetermined aperture, and it is delayed 2 seconds；If
It is no, stop the instruction for preselecting water circulating pump outlet hydraulic butterfly valve in sending out；
If so, judging to preselect whether water circulating pump has run；If not, sending out the instruction for starting pre-selection water circulating pump；
If so, judging that described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system whether water filling is complete
At；
If so, judge water circulating pump outlet hydraulic butterfly valve whether standard-sized sheet, and the water circulating pump outlet main-piping pressure it is whether big
In setting value, and described two drag a recirculating cooling water system or the one-to-one recirculating cooling water system condenser water box to empty door
Whether close；If not, sending out open cycle exit of pump hydraulic butterfly valve, closes two and a recirculating cooling water system or one-to-one is dragged to follow
Ring cooling water system condenser water box empties the instruction of door；
If so, judging whether " big the United Nations General Assembly " or " small " has put into or four water circulating pump interlockings whether have been put into or institute
Have whether water circulating pump has run, and water circulating pump subgroup controls whether to have put into；If not, sending out as given an order：Throwing follows
Ring water pump subgroup controls；And throw " big the United Nations General Assembly " or " small ".
3. start-up and shut-down control method according to claim 2, which is characterized in that the start-up and shut-down control method further includes：
Judge that water circulating pump subgroup controls whether to have dropped out and whether be delayed 10 seconds；If not, sending out water circulating pump operation number of units
Subtract 1 and exits the instruction of water circulating pump subgroup control；
If so, judging to preselect whether water circulating pump outlet hydraulic butterfly valve aperture is less than predetermined number of degrees with respect；If not, it is pre- to send out closing
Select the instruction of water circulating pump outlet hydraulic butterfly valve；
If so, judging to preselect whether water circulating pump has stopped, and preselect whether water circulating pump outlet hydraulic butterfly valve has closed；If
It is no, stopping pre-selection water circulating pump is sent out, and close the instruction of pre-selection water circulating pump outlet hydraulic butterfly valve；
If so, judging whether all water circulating pumps stop；
If all water circulating pumps stop, judging that water circulating pump is program-controlled and water circulating pump subgroup controls whether to have dropped out；If
It is no, it sends out and exits that water circulating pump is program-controlled and the instruction of water circulating pump subgroup control.
4. start-up and shut-down control method according to claim 2, which is characterized in that the start-up and shut-down control method further includes：Institute
Stating two drags a recirculating cooling water system to the step of the one-to-one recirculating cooling water system water filling, including：
Judge whether user presses " two drag one " in water filling button to " one-to-one " water filling button；
If so, judge whether one-to-one recirculating cooling water system condenser intake gate has been opened, and one-to-one circulating cooling water system
Whether system condenser water box exhaust valve has been opened；It opens one-to-one recirculating cooling water system condenser intake gate if not, sending out, open
It opens one-to-one recirculating cooling water system condenser return water door 20 seconds and opens one-to-one recirculating cooling water system condenser water box row
The instruction of porthole；
If so, judging that described two drag a recirculating cooling water system whether complete to the one-to-one recirculating cooling water system water filling
At；
If so, judge whether one-to-one recirculating cooling water system condenser water box exhaust valve has closed, and one-to-one circulating cooling
Whether water system condenser return water door has been opened；One-to-one recirculating cooling water system condenser water box steam discharge is closed if not, sending out
Door and the instruction for opening one-to-one recirculating cooling water system condenser return water door.
5. start-up and shut-down control method according to claim 2, which is characterized in that the start-up and shut-down control method further includes：Institute
State one-to-one recirculating cooling water system to described two drag a recirculating cooling water system water filling the step of, including：
Judge whether user presses " one-to-one " in water filling button to " two drag one " water filling button；
If so, judge that two drag whether a recirculating cooling water system condenser intake gate has been opened, and two drag a circulating cooling water system
Whether system condenser water box exhaust valve has been opened；It drags a recirculating cooling water system condenser intake gate if not, sending out unlatching two, open
Open two drag a recirculating cooling water system condenser return water door 20 seconds and open two drag a recirculating cooling water system condenser water box arrange
The instruction of porthole；
If so, judging that the one-to-one recirculating cooling water system drags a recirculating cooling water system water filling whether complete to described two
At；
If so, judge that two drag whether a recirculating cooling water system condenser water box exhaust valve has closed, and two drag a circulating cooling
Whether water system condenser return water door has been opened；If not, sending out closing two drags a recirculating cooling water system condenser water box steam discharge
Door simultaneously opens two instructions for dragging a recirculating cooling water system condenser return water door.
6. start-up and shut-down control method according to claim 2, which is characterized in that the setting value is 0.2MPa.
7. start-up and shut-down control method according to claim 3, which is characterized in that the predetermined number of degrees with respect is 30 degree.
8. start-up and shut-down control method according to claim 2, which is characterized in that the aperture that the predetermined aperture is 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854654.0A CN105806012B (en) | 2014-12-31 | 2014-12-31 | Gas power station recirculating cooling water system and its start-up and shut-down control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854654.0A CN105806012B (en) | 2014-12-31 | 2014-12-31 | Gas power station recirculating cooling water system and its start-up and shut-down control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105806012A CN105806012A (en) | 2016-07-27 |
| CN105806012B true CN105806012B (en) | 2018-09-07 |
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ID=56465250
Family Applications (1)
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| CN106247739B (en) * | 2016-09-28 | 2019-01-29 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's industrial cooling circulating water system and its start-up and shut-down control method |
| CN106253581B (en) * | 2016-09-28 | 2018-09-07 | 华北电力科学研究院有限责任公司 | Thermal power plant's Generator Stator Cooling water system and its start-up and shut-down control method |
| CN106401932B (en) * | 2016-11-03 | 2018-01-12 | 中冶华天工程技术有限公司 | A kind of sewage disposal elevator pump progress control method |
| CN113137826B (en) * | 2021-04-20 | 2022-11-04 | 华北电力科学研究院有限责任公司 | Mechanical ventilation indirect air cooling system control method and system |
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