CN105806091A - Open cooling water system of gas thermal power plant and start-stop controlling method thereof - Google Patents
Open cooling water system of gas thermal power plant and start-stop controlling method thereof Download PDFInfo
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- CN105806091A CN105806091A CN201410853300.4A CN201410853300A CN105806091A CN 105806091 A CN105806091 A CN 105806091A CN 201410853300 A CN201410853300 A CN 201410853300A CN 105806091 A CN105806091 A CN 105806091A
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Abstract
The invention provides an open cooling water system of a gas thermal power plant and a start-stop controlling method thereof. The start-stop controlling method comprises the following steps: an initial starting step, a unit selecting step, an operation starting step and a system stopping step, wherein the method comprises a step of operating any water circulating pump as required and determining whether the pressure of a circulating water outlet mother pipe is smaller than a preset value and whether an open cooling water pump is selected in advance before the initial starting step; and the method also comprises a step of determining whether the open cooling water pump stops and a water ring vacuum pump stops as required before the system stopping step. Through the start-stop controlling method, the open cooling water system can be automatically started in a fully-stopped state or a partially-started state of the open cooling water system; the original operation state during partially starting is not disturbed; the open cooling water system can be automatically stopped in the operation state.
Description
Technical field
The present invention cools down water technology about gas power station, especially with regard to a kind of gas power station open cooling water system (opencoolingwatersystem) and on off control method thereof.
Background technology
Gas power station open type cooling water takes from condenser recirculating cooling water system, it is adaptable to the equipment relatively big to water consumption, circulating cooling water quality can meet requirement and closed-type circulating cooling water heat exchanger provide cooling water source.
Existing open cooling water system cannot realize the automatization under gas power station open cooling water system full cut-off state and start and the automatization's stopping under running status.Gas power station open cooling water system automatization under part starting state cannot be realized start, and original running status can be disturbed.
Summary of the invention
The embodiment of the present invention provides a kind of gas power station open cooling water system and on off control method thereof, with under open cooling water system full cut-off state or under part starting state, it is achieved the automatic startup of open cooling water system；Realize being automatically stopped of open cooling water system under operation.
To achieve these goals, the present invention provides a kind of gas power station open cooling water system, and described gas power station open cooling water system includes: two drags an open type cooling water machine group, one-to-one open type cooling water machine group, three opening/closing water plate type heat exchangers, three open type cooling water pumps, two drag an open type automatic water filter, one-to-one open type automatic water filter, two drag an open type automatic water filter bypass and the bypass of one-to-one open type automatic water filter；
Described two drag the entrance of an open type automatic water filter entrance and one-to-one open type automatic water filter to connect recirculated cooling water water supply line, and outlet connects the entrance of three described open type cooling water pumps；The outlet of three described open type cooling water pumps connects two entrances dragging the entrance of an open type cooling water machine group, the entrance of one-to-one open type cooling water machine group and three described opening/closing water plate type heat exchangers by branch feed pipe；Two drag the outlet of an open type cooling water machine group, the outlet of one-to-one open type cooling water machine group and the outlet of three described opening/closing water plate type heat exchangers to be connected to open circulating water backwater mother pipe respectively through branch's boiled water pipe, and described open circulating water backwater mother's pipe is connected to two and drags a recirculated water unit, one-to-one recirculated water unit and tower basin；Two drag an open type automatic water filter bypass to be connected to described two drags an open type automatic water filter, and the bypass of one-to-one open type automatic water filter is connected to one-to-one open type automatic water filter；
Described two drag an open type cooling water machine group to include three vacuum pump heat exchangers, and described one-to-one open type cooling water machine group includes two vacuum pump heat exchangers.
In one embodiment, described gas power station open cooling water system also includes: open cooling water system programed logic operation button, water filling completes ACK button, energy saver mode select button, system start-up select button, open type cooling water pump runs quantity select button, standby button thrown by open type cooling water pump interlocking, and two drag an opened water automatic water filter program control input button and the program control input button of one-to-one opened water automatic water filter.
To achieve these goals, the present invention provides a kind of on off control method of described gas power station open cooling water system, and described on off control method includes: initializes and starts step, unit optimum selection step and the startup step that puts into operation；Wherein
The described startup step that initializes includes:
Judge whether three described open type cooling water pumps have at least an operation；
If three described equal off-duties of open type cooling water pump, receive the unlatching feedback information importing and exporting door of described opening/closing water-to-water heat exchanger, the gateway door of described open type cooling water pump and the unlatching feedback information of bypass door, described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter, judge whether the import and export door of three described opening/closing water-to-water heat exchangers has turned on, whether gateway door and the bypass door of three described open type cooling water pumps have turned on, and whether described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter to have turned on；
If not, send the instruction of the import and export Electrically operated gate opening three opening/closing water-to-water heat exchangers, open open type cooling water pump gateway door and bypass door, and open described two instructions dragging the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter；
If it is, enter described unit optimum selection step；
Described unit optimum selection step includes:
Unit optimum selection log-on message according to user's input judges the unit starting mode that user selects；
If described unit starting mode starts under a mode for dragging two, judge that described two drag a cooling water machine group whether water filling completes, if described two drag a cooling water machine group water filling to be not fully complete, send unlatching described two and drag an open type automatic water filter entrance door instruction of 10 seconds；
If described two drag a cooling water machine group water filling to complete, judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, two drag the open type cooling water of a cooling water machine group to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close, if not, send and open described two instructions dragging an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the two open type cooling water instructions to recirculated water water return pipeline Electrically operated gate dragging a cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals；The startup step if it is, put into operation described in carrying out；
If described unit starting mode is start under one-to-one mode, judge described one-to-one cooling water machine group starts whether water filling completes, it is not fully complete if described one-to-one cooling water machine group starts water filling, sends the instruction opening described one-to-one open type automatic water filter entrance door predetermined time interval；
Complete if described one-to-one cooling water machine group starts water filling, judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, the open type cooling water of one-to-one cooling water machine group is to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close, if not, send and open described two instructions dragging an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the open type cooling water instruction to recirculated water water return pipeline Electrically operated gate of one-to-one cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals；The startup step if it is, put into operation described in carrying out；
The described startup step that puts into operation includes:
Judge that described two drag whether program control and described the program control of one-to-one open type automatic water filter of an open type automatic water filter all puts into, if it does not, send the program control instruction putting into the described two program control and described one-to-one open type automatic water filters dragging an open type automatic water filter；
If it is, judge whether to select energy saver mode；
If non-selected energy saver mode, it may be judged whether select whether the open type cooling water pump of energy saver mode or preliminary election runs, if it does not, send the instruction starting preliminary election open type cooling water pump；
If it is, judge whether to select energy saver mode, or whether the outlet Electrically operated gate of the open type cooling water pump of preliminary election is opened, and whether open type cooling water pump outlet main-piping pressure is more than predetermined pressure, and whether time delay exceedes preset time delay；If it does not, send the instruction of the outlet Electrically operated gate of the cooling water pump opening preliminary election；
If it is, judge whether to select whether energy saver mode or open type cooling water pump interlocking put into, if it does not, send the instruction throwing open type cooling water pump interlocking.
In one embodiment, described on off control method also includes: system stops step, and described system stops step and includes:
Judge whether open type cooling pump interlocking has dropped out, if it does not, send the instruction exiting open type cooling pump interlocking；
If it is, judge whether three described open type cooling water pumps stop, if it does not, send the instruction stopping three described open type cooling water pumps；
If it is, judge whether three described open type cooling water pump outlet Electrically operated gate close, if it does not, send the instruction closing three described open type cooling water pump outlet Electrically operated gate.
In one embodiment, the described permissive condition starting step that initializes is: arbitrary water circulating pump runs and circulating water outlet main-piping pressure is less than predetermined value and the preliminary election of open type cooling water pump.
In one embodiment, the permissive condition of described system stopping step is: enclosed cooling water pump all stops and water ring vacuum pump all stops.
In one embodiment, described predetermined value is 0.1MPa.
In one embodiment, described predetermined time interval is 10 seconds.
In one embodiment, described predetermined pressure is 0.18MPa.
In one embodiment, described preset time delay is 10 seconds.
By the present invention, can under open cooling water system full cut-off state or under part starting state, it is achieved the automatic startup of open cooling water system, original running status when interference sections does not start；Realize being automatically stopped of open cooling water system under operation.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the gas power station open cooling water system of the embodiment of the present invention；
Fig. 2 is the on off control method flow diagram of the embodiment of the present invention；
Fig. 3 is the flow chart initializing startup step S201 of the embodiment of the present invention；
Fig. 4 is the flow chart of the unit optimum selection step S202 of the embodiment of the present invention；
Fig. 5 is that putting into operation of the embodiment of the present invention starts the flow chart of step S203；
Fig. 6 is the flow chart of the system stopping step of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of gas power station open cooling water system, and described gas power station open cooling water system includes: two drag an open type cooling water machine group, one-to-one open type cooling water machine group, 3, three open type cooling water pumps 4, two of three opening/closing water plate type heat exchangers to drag an open type automatic water filter 5, one-to-one open type automatic water filter 6, two to drag an open type automatic water filter bypass 7 and one-to-one open type automatic water filter bypass 8.
In gas power station open cooling water system, annexation between each several part is as follows: two drag the entrance of open type automatic water filter 5 entrance and one-to-one open type automatic water filter 6 to connect recirculated cooling water water supply line 9, and outlet connects the entrance of three open type cooling water pumps 4.The outlet of three open type cooling water pumps 4 connects two entrances dragging the entrance of an open type cooling water machine group, the entrance of one-to-one open type cooling water machine group and three opening/closing water plate type heat exchangers 3 by branch's feed pipe 10；Two drag the outlet of an open type cooling water machine group, the outlet of one-to-one open type cooling water machine group and the outlet of three opening/closing water plate type heat exchangers 3 to be connected to open circulating water backwater mother's pipe 12 respectively through branch's boiled water pipe 11, open circulating water backwater mother's pipe 12 is connected to two and drags a recirculated water unit, one-to-one recirculated water unit and tower basin (in Fig. 1, not shown two drag the schematic diagram of a recirculated water unit, one-to-one recirculated water unit and tower basin, only illustrate).Two drag an open type automatic water filter bypass 7 to be connected to described two drags an open type automatic water filter 5, and one-to-one open type automatic water filter bypass 8 is connected to one-to-one open type automatic water filter 6.
Two drag an open type cooling water machine group to include three vacuum pump heat exchangers 1, and one-to-one open type cooling water machine group includes two vacuum pump heat exchangers 2.
The open cooling water system of the present invention is made up of open type cooling water pump, open type cooling water automatic water filter, opening/closing cooling water heat exchanger, water ring vacuum pump heat exchanger and pipeline, valve and relevant thermal technology's measuring point, section of tubing therein and valve are conventional equipment, do not repeat them here.Open type cooling water pump effect is to cool down water for open type to provide pressure head, drives open type cooling water to flow through the cooling water heat exchanger of each subsidiary engine equipment of gas power station.Open type automatic water filter is for preventing bigger impurity particle from entering open type cooling water pump, causing the phenomenon of open type cooling water pump axle bite or locking.Cooling water heat exchanger, including the cooling water heat exchanger of the opening/closing cooling water heat exchanger and cooling vacuum pump that cool down closed-up water.Enclosed cooling water is flow through in opening/closing cooling water heat exchanger side, and open type cooling water is flow through in side, and enclosed cooling water is cooled down water-cooled but by this heat exchanger by open type；The cooling water heat exchanger of water ring vacuum pump, open type cooling water is flow through in side, and side is flow through water ring vacuum pump and included the working water of high heat, and these working water are cooled down water-cooled but by this heat exchanger by open type.Open type cooling water is driven by open type cooling water pump, each cooling water heat exchanger is arrived through open type cooling water pipeline, control open type cooling water flow through the flow of each cooling water heat exchanger by controlling the aperture of each user's valve, thus reaching to control the purpose of cooled Temperature of Working.
In gas power station open cooling water system shown in Fig. 1,Represent pressure-measuring-point,Represent temperature point,Represent water level measuring point,Represent electrically operated valve.
This gas power station open cooling water system is also provided with multiple button, including: open cooling water system programed logic operation button 13, water filling completes ACK button 14, energy saver mode select button 15, system start-up select button 16, open type cooling water pump runs quantity select button 17, standby button 18 thrown by open type cooling water pump interlocking, and two drag an opened water automatic water filter program control input button 19 and the program control input button 20 of one-to-one opened water automatic water filter.
As in figure 2 it is shown, the embodiment of the present invention provides a kind of on off control method, the gas power station open cooling water system shown in application drawing 1, described on off control method includes:
S201: initialize and start step；
S202: unit optimum selection step；And
S203: put into operation startup step.
Include as it is shown on figure 3, initialize startup step S201:
S301: judge whether have at least an operation in three open type cooling water pumps.
If three equal off-duties of open type cooling water pump, carry out S302.Whether open type cooling water pump runs, it is possible to according to whether receive the operation information of closed cycle water pump feedback, if receiving the operation information of a certain closed cycle water pump feedback, then judge that this closed cycle water pump puts into operation.Avoid the interference original running status of closed cooling water system, it also avoid the work of the repeated priming of enclosed cooling water pump.
S302: what judge three opening/closing water-to-water heat exchangers imports and exports whether door, the gateway door of three open type cooling water pumps and bypass door have turned on, and two drag whether the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter have turned on.
nullWhen being embodied as，Need to receive the unlatching feedback information importing and exporting door of described opening/closing water-to-water heat exchanger，The gateway door of described open type cooling water pump and the unlatching feedback information of bypass door，Described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter，Judge whether the import and export door (6 doors) of three described opening/closing water-to-water heat exchangers has turned on according to this，Whether the gateway door of three described open type cooling water pumps and bypass door (7 doors) have turned on，And whether described two drag the outlet portal of an open type automatic water filter and the outlet portal (2 doors) of one-to-one open type automatic water filter to have turned on，If having one or more in above-mentioned 15 doors is unlatching，Need to enter S303，Send the instruction of the import and export Electrically operated gate opening three opening/closing water-to-water heat exchangers，Open open type cooling water pump gateway door and bypass door，And open described two instructions dragging the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter，To open above-mentioned 15 doors.
If whether the import and export door of three described opening/closing water-to-water heat exchangers has turned on, whether gateway door and the bypass door of three described open type cooling water pumps have turned on, and described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter whether to have turned on, enter described unit optimum selection step.
As shown in Figure 4, described unit optimum selection step S202 includes:
S401: receive the unit optimum selection log-on message of user's input.
S402: judge the unit starting mode that user selects according to the unit optimum selection log-on message of user's input.
If described unit starting mode starts under a mode for dragging two, carry out S403；If described unit starting mode is start under one-to-one mode, carry out S407.
S403: judge that described two drag a cooling water machine group whether water filling completes.
When being embodied as, a cooling water machine group water filling is dragged to complete confirmation if receiving the two of feedback, represent that two drag a cooling water machine group water filling to complete, dragging a cooling water machine group water filling to complete confirmation if not receiving the two of feedback, representing that two drag a cooling water machine group water filling to be not fully complete.If described two drag a cooling water machine group water filling to be not fully complete, enter S404, send and open described two instructions dragging an open type automatic water filter entrance door predetermined time interval, to complete two water fillings dragging a cooling water machine group.If described two drag a cooling water machine group water filling to complete, carry out S405.This predetermined time interval can be 10 seconds, and the present invention is not limited.
S405: judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, two drag the open type cooling water of a cooling water machine group to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close.
When being embodied as, can pass through to judge whether that receiving two drags a feedback information, this two drags a feedback information to include two feedbacks dragging an open type automatic water filter entrance door to open, the feedback that one-to-one open type automatic water filter entrance door has been opened, the feedback that the two open type cooling feedbacks opened of water to recirculated water water return pipeline Electrically operated gate dragging a cooling water machine group and three described open type cooling water pump outlet portals have closed, without receiving above-mentioned all of feedback, then carry out S406, send unlatching two and drag a control instruction, for dragging an open type automatic water filter entrance door opening two, open one-to-one open type automatic water filter entrance door, opening two drags the open type cooling water of a cooling water machine group to recirculated water water return pipeline Electrically operated gate, and close three described open type cooling water pump outlet portals.This unlatching two drags a control instruction to include: described two drag the instruction of an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the two open type cooling water instructions to recirculated water water return pipeline Electrically operated gate dragging a cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals.
If described two drag an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door to open, two drag the open type cooling water of a cooling water machine group to open to recirculated water water return pipeline Electrically operated gate, and three described open type cooling water pump outlet portals close, put into operation described in carrying out startup step S203.
S407: judge whether water filling completes described one-to-one cooling water machine group.
When being embodied as, if the one-to-one cooling water machine group water filling receiving feedback completes confirmation, represent that one-to-one cooling water machine group water filling completes, if the one-to-one cooling water machine group water filling not receiving feedback completes confirmation, represent that one-to-one cooling water machine group water filling is not fully complete.If described one-to-one cooling water machine group water filling is not fully complete, enters S408, send the instruction opening described one-to-one open type automatic water filter entrance door predetermined time interval, to complete the water filling of one-to-one cooling water machine group.If described one-to-one cooling water machine group water filling completes, carry out S409.This predetermined time interval can be 10 seconds, and the present invention is not limited.
S409: judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, the open type cooling water of one-to-one cooling water machine group is to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close.
When being embodied as, can pass through to judge whether to receive one-to-one feedback information, this one-to-one feedback information includes two feedbacks dragging an open type automatic water filter entrance door to open, the feedback that one-to-one open type automatic water filter entrance door has been opened, the feedback that the open type cooling feedback opened of water to recirculated water water return pipeline Electrically operated gate of one-to-one cooling water machine group and three described open type cooling water pump outlet portals have closed, without receiving above-mentioned all of feedback, then carry out S410, send unlatching one-to-one control instruction, for dragging an open type automatic water filter entrance door opening two, open one-to-one open type automatic water filter entrance door, open the open type cooling water of one-to-one cooling water machine group to recirculated water water return pipeline Electrically operated gate, and close three described open type cooling water pump outlet portals.This unlatching one-to-one control instruction includes: described two drag the instruction of an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the open type cooling water instruction to recirculated water water return pipeline Electrically operated gate of one-to-one cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals.
If described two drag an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door to open, the open type cooling water of one-to-one cooling water machine group is opened to recirculated water water return pipeline Electrically operated gate, and three described open type cooling water pump outlet portals close, put into operation described in carrying out startup step S203.
As it is shown in figure 5, the described startup step S203 that puts into operation includes:
S501: judge that described two drag whether program control and described the program control of one-to-one open type automatic water filter of an open type automatic water filter all puts into.
When being embodied as, can according to whether what receive that two automatic water filters send program control have thrown feedback, judge that two drag whether program control and described the program control of one-to-one open type automatic water filter of an open type automatic water filter all puts into, the program control of an open type automatic water filter is dragged to throw feedback or only received described the program control of one-to-one open type automatic water filter and thrown feedback if only receiving two, enter S502, send the program control instruction putting into the described two program control and described one-to-one open type automatic water filters dragging an open type automatic water filter, to control to put into the program control of the described two program control and described one-to-one open type automatic water filters dragging an open type automatic water filter.
If two drag whether program control and described the program control of one-to-one open type automatic water filter of an open type automatic water filter all puts into, enter S503.
S503: judge whether to select energy saver mode.
If having selected energy saver mode, the startup step that puts into operation terminates.If non-selected energy saver mode, enter S504.
S504: judge whether whether the open type cooling water pump selecting energy saver mode or preliminary election runs.
If the open type cooling water pump off-duty of non-selected energy saver mode and preliminary election, then enter S505, send the instruction starting preliminary election open type cooling water pump.If the open type cooling water pump selecting energy saver mode or preliminary election runs, enter S506.
It should be noted that if judging three closed cycle water pumps have any one or any two run in S301, then enter S504.
S506: judge whether to select energy saver mode, or whether the outlet Electrically operated gate of the open type cooling water pump of preliminary election is opened, and whether open type cooling water pump outlet main-piping pressure is more than predetermined pressure, whether time delay exceedes preset time delay.Described predetermined pressure can be 0.18MPa, and described preset time delay can be 10 seconds, and the present invention is not limited.
Specifically, need to judge whether (1) has selected energy saver mode, or judge whether the outlet Electrically operated gate of the open type cooling water pump of (2) preliminary election is opened, and whether open type cooling water pump outlet main-piping pressure is more than predetermined pressure, whether time delay exceedes preset time delay, if above-mentioned (1) or (2) are all unsatisfactory for (being no), enter S507, send the instruction of the outlet Electrically operated gate of the cooling water pump opening preliminary election.If above-mentioned (1) or (2) are not to carry out S508.
S508: judge whether to select whether energy saver mode or open type cooling water pump interlocking put into.
If having selected energy saver mode or open type cooling water pump interlocking to put into, the startup step that puts into operation terminates.If it does not, enter S509, send the instruction throwing open type cooling water pump interlocking.
In one embodiment, as shown in Figure 6, the on off control method of the embodiment of the present invention also includes: system stops step, and described system stops step and includes:
S601: judge whether open type cooling pump interlocking has dropped out.
If open type cooling pump interlocking does not exit, carry out S602, send the instruction exiting open type cooling pump interlocking；If open type cooling pump interlocking has dropped out, carry out S603.
S603: judge whether three described open type cooling water pumps stop.
If three described open type cooling water pumps exist the open type cooling water pump not stopped, then enter S604, send the instruction stopping three described open type cooling water pumps.If three described open type cooling water pumps all stopped, then enter S605.
S605: judge whether three described open type cooling water pump outlet Electrically operated gate close.If three described open type cooling water pump outlet Electrically operated gate are all closed, system stops step and terminates.If three described open type cooling water pump outlet Electrically operated gate exist the open type cooling water pump being not turned off, enter S606, send the instruction closing three described open type cooling water pump outlet Electrically operated gate.
In one embodiment, initializing the condition starting step 201 permission beginning is: arbitrary water circulating pump runs and circulating water outlet main-piping pressure is less than predetermined value and the preliminary election of open type cooling water pump, and this predetermined value can be set to 0.1MPa, and the present invention is not limited.
In one embodiment, the permissive condition of system stopping step 203 is: enclosed cooling water pump all stops and water ring vacuum pump all stops.
Each step of the on off control method (programed logic programedcontrollogic) of the present invention, it is necessary to first judge whether feedback receives, if received, continues next step；If do not received, then sending instruction, waiting to be feedback receiving.Specifically should be noted that following some: 1) two water fillings complete ACK button and all do not put into；2) after selecting energy saver mode button to select, it is meant that do not start open type cooling water pump, but supply water to heat exchanger by opening open type cooling water pump bypass door；3), before putting into programmed logic, selecting startup system is " two drag one " or " one-to-one "；4), before putting into programmed logic, select to run the quantity of pump；5), before putting into programmed logic, throw standby button by interlocking and select preliminary election pump.
By the open type cooling water pump block push button on the gas power station open cooling water system shown in Fig. 1, it is possible to No. 1 pump of preliminary election, No. 2 pumps of preliminary election and No. 3 pumps of preliminary election.This button is applied particularly in S504 to S506, S504, and instruction is for starting preliminary election pump；In S506, instruction is for opening preliminary election delivery side of pump Electrically operated gate.
Run quantity select button by clicking open type cooling water pump, select the method for operation of open type cooling water pump, including " single pump operation ", " double pump operation " and " three pump operations " these three mode.This button is applied particularly in S504 to S506, S504, for starting the preliminary election pump of respective numbers；In S506, open the preliminary election delivery side of pump Electrically operated gate of respective numbers.
When the on off control method of the present invention proceeds to a certain step, when not receiving due feedback signal, programed logic can rest on this step, waits manual operation.Power plant operations staff can find the unreceived feedback signal of currently running step, artificially judges whether unreceived feedback signal affects continuing executing with of programed logic.If this feedback signal does not affect present procedure controls proceeding of logic, operations staff can operate leapfrog action and continue the execution of programed logic；If this feedback signal affects present procedure controls proceeding of logic, then operations staff according to each found unsatisfied feedback signal, can going investigation problem, until receiving this feedback signal, continuing executing with programed logic targetedly.
The on off control method of the present invention can automatically engage open type cooling water pump interlocking, after interlocking puts into, when having the operation of open type cooling water pump and open cooling water system pressure lower than certain definite value；Or when having arbitrary open type cooling water pump to trip, all can another open type cooling water pump of interlocked startup, thus ensureing that open cooling water system main-piping pressure is normal.
The on off control method of the present invention can realize four big functions: the first, under open cooling water system full cut-off state, it is achieved the automatic startup of open cooling water system；And under operation, it is achieved being automatically stopped of open cooling water system.The second, when open cooling water system part starts, it is achieved the automatic startup of open cooling water system, and original running status is not disturbed.3rd, when programed logic runs to a certain step, condition is unsatisfactory for, if artificially judging that this condition can ignore that, it is possible to is performed manually by leapfrog action and continues the operation of programed logic, until step sequence is complete.4th, the energy saver mode achieving gas power station open cooling water system selects.When cooling down user's thermic load and being bigger, not selecting energy saver mode, this program control startup logic starts open type cooling water pump, open type cooling water pump drive open type cooling water to be supplied to each cooling user；When cooling down user's thermic load and being less, selecting energy saver mode, this program control startup logic does not start open type cooling water pump, is bypassed by open type cooling water pump, circulating cooling water pump drive open type cooling water to be supplied to each cooling user, thus realizing energy-conservation purpose.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect.And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe.It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Applying specific embodiment in the present invention principles of the invention and embodiment are set forth, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. a gas power station open cooling water system, it is characterized in that, described gas power station open cooling water system includes: two drags an open type cooling water machine group, one-to-one open type cooling water machine group, three opening/closing water plate type heat exchangers, three open type cooling water pumps, two drag an open type automatic water filter, one-to-one open type automatic water filter, two drag an open type automatic water filter bypass and the bypass of one-to-one open type automatic water filter；
Described two drag the entrance of an open type automatic water filter entrance and one-to-one open type automatic water filter to connect recirculated cooling water water supply line, and outlet connects the entrance of three described open type cooling water pumps；The outlet of three described open type cooling water pumps connects two entrances dragging the entrance of an open type cooling water machine group, the entrance of one-to-one open type cooling water machine group and three described opening/closing water plate type heat exchangers by branch feed pipe；Two drag the outlet of an open type cooling water machine group, the outlet of one-to-one open type cooling water machine group and the outlet of three described opening/closing water plate type heat exchangers to be connected to open circulating water backwater mother pipe respectively through branch's boiled water pipe, and described open circulating water backwater mother's pipe is connected to two and drags a recirculated water unit, one-to-one recirculated water unit and tower basin；Two drag an open type automatic water filter bypass to be connected to described two drags an open type automatic water filter, and the bypass of one-to-one open type automatic water filter is connected to one-to-one open type automatic water filter；
Described two drag an open type cooling water machine group to include three vacuum pump heat exchangers, and described one-to-one open type cooling water machine group includes two vacuum pump heat exchangers.
2. gas power station open cooling water system according to claim 1, it is characterized in that, described gas power station open cooling water system also includes: open cooling water system programed logic operation button, water filling completes ACK button, energy saver mode select button, system start-up select button, open type cooling water pump runs quantity select button, standby button thrown by open type cooling water pump interlocking, and two drag an opened water automatic water filter program control input button and the program control input button of one-to-one opened water automatic water filter.
3. the on off control method of the gas power station open cooling water system that a kind is applied to described in claim 1, it is characterised in that described on off control method includes: initialize and start step, unit optimum selection step and the startup step that puts into operation；Wherein
The described startup step that initializes includes:
Judge whether three described open type cooling water pumps have at least an operation；
If three described equal off-duties of open type cooling water pump, receive the unlatching feedback information importing and exporting door of described opening/closing water-to-water heat exchanger, the gateway door of described open type cooling water pump and the unlatching feedback information of bypass door, described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter, judge whether the import and export door of three described opening/closing water-to-water heat exchangers has turned on, whether gateway door and the bypass door of three described open type cooling water pumps have turned on, and whether described two drag the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter to have turned on；
If not, send the instruction of the import and export Electrically operated gate opening three opening/closing water-to-water heat exchangers, open open type cooling water pump gateway door and bypass door, and open described two instructions dragging the outlet portal of an open type automatic water filter and the outlet portal of one-to-one open type automatic water filter；
If it is, enter described unit optimum selection step；
Described unit optimum selection step includes:
Unit optimum selection log-on message according to user's input judges the unit starting mode that user selects；
If described unit starting mode starts under a mode for dragging two, judge that described two drag a cooling water machine group whether water filling completes, if described two drag a cooling water machine group water filling to be not fully complete, send and open described two instructions dragging an open type automatic water filter entrance door predetermined time interval；
If described two drag a cooling water machine group water filling to complete, judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, two drag the open type cooling water of a cooling water machine group to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close, if not, send and open described two instructions dragging an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the two open type cooling water instructions to recirculated water water return pipeline Electrically operated gate dragging a cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals；The startup step if it is, put into operation described in carrying out；
If described unit starting mode is start under one-to-one mode, judge described one-to-one cooling water machine group starts whether water filling completes, it is not fully complete if described one-to-one cooling water machine group starts water filling, sends the instruction opening described one-to-one open type automatic water filter entrance door predetermined time interval；
Complete if described one-to-one cooling water machine group starts water filling, judge that described two drag whether an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door are opened, the open type cooling water of one-to-one cooling water machine group is to whether recirculated water water return pipeline Electrically operated gate is opened, and whether three described open type cooling water pump outlet portals close, if not, send and open described two instructions dragging an open type automatic water filter entrance door and described one-to-one open type automatic water filter entrance door, open the open type cooling water instruction to recirculated water water return pipeline Electrically operated gate of one-to-one cooling water machine group, and close the instruction of three described open type cooling water pump outlet portals；The startup step if it is, put into operation described in carrying out；
The described startup step that puts into operation includes:
Judge that described two drag whether program control and described the program control of one-to-one open type automatic water filter of an open type automatic water filter all puts into, if it does not, send the program control instruction putting into the described two program control and described one-to-one open type automatic water filters dragging an open type automatic water filter；
If it is, judge whether to select energy saver mode；
If non-selected energy saver mode, it may be judged whether select whether the open type cooling water pump of energy saver mode or preliminary election runs, if it does not, send the instruction starting preliminary election open type cooling water pump；
If it is, judge whether to select energy saver mode, or whether the outlet Electrically operated gate of the open type cooling water pump of preliminary election is opened, and whether open type cooling water pump outlet main-piping pressure is more than predetermined pressure, and whether time delay exceedes preset time delay；If it does not, send the instruction of the outlet Electrically operated gate of the cooling water pump opening preliminary election；
If it is, judge whether to select whether energy saver mode or open type cooling water pump interlocking put into, if it does not, send the instruction throwing open type cooling water pump interlocking.
4. on off control method according to claim 3, it is characterised in that described on off control method also includes: system stops step, described system stops step and includes:
Judge whether open type cooling pump interlocking has dropped out, if it does not, send the instruction exiting open type cooling pump interlocking；
If it is, judge whether three described open type cooling water pumps stop, if it does not, send the instruction stopping three described open type cooling water pumps；
If it is, judge whether three described open type cooling water pump outlet Electrically operated gate close, if it does not, send the instruction closing three described open type cooling water pump outlet Electrically operated gate.
5. on off control method according to claim 4, it is characterised in that described initialization starts the permissive condition of step and is: arbitrary water circulating pump runs and circulating water outlet main-piping pressure is less than predetermined value and the preliminary election of open type cooling water pump.
6. on off control method according to claim 5, it is characterised in that described system stops the permissive condition of step and is: enclosed cooling water pump all stops and water ring vacuum pump all stops.
7. on off control method according to claim 6, it is characterised in that described predetermined value is 0.1MPa.
8. the on off control method according to any one of claim 3-6, it is characterised in that described predetermined time interval is 10 seconds.
9. the on off control method according to any one of claim 3-6, it is characterised in that described predetermined pressure is 0.18MPa.
10. the on off control method according to any one of claim 3-6, it is characterised in that described preset time delay is 10 seconds.
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| CN201410853300.4A CN105806091B (en) | 2014-12-31 | 2014-12-31 | Gas power station open cooling water system and its start-up and shut-down control method |
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| CN201410853300.4A CN105806091B (en) | 2014-12-31 | 2014-12-31 | Gas power station open cooling water system and its start-up and shut-down control method |
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| CN113137826A (en) * | 2021-04-20 | 2021-07-20 | 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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