CN105807803A - Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system - Google Patents
Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system Download PDFInfo
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- CN105807803A CN105807803A CN201410853319.9A CN201410853319A CN105807803A CN 105807803 A CN105807803 A CN 105807803A CN 201410853319 A CN201410853319 A CN 201410853319A CN 105807803 A CN105807803 A CN 105807803A
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Abstract
The invention provides a closed-type cooling system for a fuel gas thermal power plant, and a starting/stopping control method for the closed-type cooling system. The method comprises the steps: the starting of a closed-water type utility system, the selecting of units, the starting of operation, and the stopping of the system. The method needs to judge whether the pressure of a demineralized water mother tube is greater than 0.2MPa or not, whether a closed-type circulating water pump is pre-selected or not and whether a 2GT+1ST closed-type cooling water system or a 1GT+1ST closed-type cooling water system is pre-selected or not before the step of the starting of the closed-water type utility system. If the pressure of the demineralized water mother tube is greater than 0.2MPa, the closed-type circulating water pump is pre-selected and the 2GT+1ST closed-type cooling water system or the 1GT+1ST closed-type cooling water system is pre-selected, the step of the starting of the closed-water type utility system is carried out. According to the invention, the method can achieve the automatic starting of the closed-type cooling water systems during the complete stopping or partial starting of the closed-type cooling water systems, and does not affect an original operation state during the partial starting. The method achieves the automatic stopping of the closed-type cooling water systems in an operation state.
Description
Technical field
The present invention cools down water technology about gas power station enclosed, especially with regard to a kind of gas power station closed cooling water system and on off control method thereof.
Background technology
The effect of gas power station closed cooling water system is the cooling water source that subsidiary engine equipment offer water quality requirement is higher and water consumption is less for gas power station, is generally adopted demineralized water or condenses water.Existing closed cooling water system cannot realize the automatization under gas power station closed cooling water system full cut-off state and start and the automatization's stopping under running status.Gas power station closed 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 closed cooling water system and on off control method thereof, with under closed cooling water system full cut-off state or under part starting state, it is achieved the automatic startup of closed cooling water system；Realize being automatically stopped of closed cooling water system under operation.
To achieve these goals, the present invention provides a kind of gas power station closed cooling water system, and described gas power station closed cooling water system includes: two drag a closed cooling water system, one-to-one closed cooling water system and close ability of swimming synergic system；Described ability of swimming synergic system of closing includes:
Enclosed cooling water mother manages, enclosed cooling water backwater mother pipe, three closed cycle water pumps, expansion tank, three open and close type water-to-water heat exchangers, two raw water heaters, two unboiled water heating recirculation pumps, air compressor cooling water pipeline pump, two supercharger cooling water pumps, supercharger cooling water pump bypass Electrically operated gate, enclosed cooling water programed logic operation button, closed cooling water system starts select button, closed cycle water pump opens pump quantity select button, standby button thrown by closed cycle water pump interlocking；
Described enclosed cooling water mother's pipe is connected to the entrance of heat supply network station water main pipe；Described enclosed cooling water backwater mother's pipe is connected to the outlet of described heat supply network station water main pipe；Described closed cycle water pump connects described enclosed cooling water mother pipe by water inlet pipe, and connects described enclosed cooling water backwater mother pipe by outlet conduit；Described open and close type water-to-water heat exchanger connects described enclosed cooling water mother pipe；Described supercharger cooling water pump is connected on the pipeline between described enclosed cooling water mother pipe and described heat supply network station water main pipe by inlet duct, is connected to gas compressor set cooling water mother pipe by outlet conduit；One end of described supercharger cooling water pump bypass Electrically operated gate connects described gas compressor set cooling water mother pipe, and the other end is connected on the pipeline between described enclosed cooling water mother pipe and described heat supply network station water main pipe；Air compressor cooling water pipeline pump is connected on the pipeline between air compressor machine and described enclosed cooling water backwater mother's pipe；Described raw water heater heats recirculation pump with described unboiled water and is connected, and is respectively connecting to described enclosed cooling water backwater mother pipe；Described expansion tank is connected to described enclosed cooling water backwater mother pipe, and is connected to desalination Jellyfish pipe by closed-up water expansion tank water pipe；
Described enclosed cooling water mother's pipe is connected to described two supply channels dragging a closed cooling water system and the supply channel of described one-to-one closed cooling water system；Described enclosed cooling water backwater mother's pipe is connected to described two water return pipelines dragging a closed cooling water system and the water return pipeline of described one-to-one closed cooling water system；Described enclosed cooling water backwater mother's pipe is connected to air compressor machine backwater mother pipe and gas compressor set cooling water backwater mother pipe.
To achieve these goals, embodiments providing a kind of on off control method of gas power station closed cooling water system, described on off control method includes: closes ability of swimming synergic system and starts step, unit optimum selection step and the startup step that puts into operation；Wherein
Close ability of swimming synergic system startup step to include:
Judge whether three described closed cycle water pumps have at least an operation；
If three described equal off-duties of closed cycle water pump, receive conducting feedback information and the water level information of described expansion tank, it is judged that whether closed-up water expansion tank water pipe turns on and whether water level in described expansion tank meets preset water level；If it does not, send the instruction of conducting closed-up water expansion tank water pipe；
If closed-up water expansion tank water pipe has turned on and water level in described expansion tank meets preset water level, receiving the enabling feedback information of closed cycle water pump, the enabling feedback information of described open and close type water-to-water heat exchanger and expansion tank adjusts valve to throw automatic feedback information, it is judged that whether the import and export of the import and export of three described closed cycle water pumps and three described open and close type water-to-water heat exchangers turn on and described expansion tank adjusts whether valve is thrown automatically；If it does not, send instruction and the expansion tank tune valve throwing automatic command of the import and export of three described closed cycle water pumps of conducting and the import and export of three described open and close type water-to-water heat exchangers；
If the import and export conducting of the import and export of three described closed cycle water pumps and three described open and close type water-to-water heat exchangers and described expansion tank adjust valve to throw automatically, receive the feedback information of closing the door of close the door feedback information and the air compressor cooling water pipeline pump of the feedback information of closing the door of raw water heater, unboiled water heating recirculation pump, it is judged that whether described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump isolate；If it does not, send the instruction isolating described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump；
If described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump are isolated, receive heat supply network and close the conducting feedback information for the feedback information of closing the door of backwater, close the door feedback information and the bypass of supercharger cooling water pump of supercharger cooling water pump, it is judged that whether heat supply network closed-up water and described supercharger cooling water pump have isolated and have judged whether the bypass of described supercharger cooling water pump turns on；If it does not, send the instruction of isolation heat supply network closed-up water and described supercharger cooling water pump and turn on the instruction of described supercharger cooling water pump bypass；
If heat supply network closed-up water and described supercharger cooling water pump have been isolated and the bypass of described supercharger cooling water pump turns on, carry out described unit optimum selection step；
Described unit optimum selection step includes:
The Starting mode receiving unit valve state information and user's input selects information, it is judged that whether described unit valve state information meets the Starting mode in described Starting mode selection information；The startup step if it is, put into operation described in carrying out；
The described startup step that puts into operation includes:
Receive enclosed cooling water main-piping pressure information and expansion tank water level information, judge whether the pressure of enclosed cooling water mother's pipe is more than whether the first preset pressure and expansion tank water level meet pre-conditioned according to described enclosed cooling water main-piping pressure information and expansion tank water level information；
If the pressure of enclosed cooling water mother's pipe meets pre-conditioned more than the first preset pressure and expansion tank water level, the closed cycle exit of pump Electrically operated gate receiving preliminary election is closed the door feedback information, it is judged that whether the closed cycle exit of pump Electrically operated gate of described preliminary election is turned off；If it does not, send the instruction closing preliminary election closed cycle exit of pump Electrically operated gate；
If the closed cycle exit of pump Electrically operated gate of described preliminary election is turned off, receive the operation feedback information of the closed cycle water pump of preliminary election, it is judged that whether the closed cycle water pump of described preliminary election runs；If it does not, send the instruction starting preliminary election closed cycle water pump；
If the closed cycle water pump of described preliminary election runs, receive the closed cycle exit of pump Electrically operated gate enabling feedback information run, it is judged that whether the closed cycle exit of pump Electrically operated gate of described operation has turned on；If it does not, send the instruction of open and close type water circulating pump outlet Electrically operated gate；
If the closed cycle exit of pump Electrically operated gate of described operation has turned on, receive the force value of described enclosed cooling water mother's pipe, it is judged that whether the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure；
If the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure, receives closed cycle water pump interlocking and put into feedback information, it is judged that whether described closed cycle water pump puts into interlocking；
If described closed cycle water pump does not put into interlocking, described closed cycle water pump is put into interlocking by the instruction sending closed-up water interlocking input.
In one embodiment, described method also includes: system stops step, and described system stops step and includes:
Judge whether closed cycle water pump interlocking has dropped out, if it does not, send interlocking exit instruction to exit described closed cycle water pump interlocking；
If it is, judge whether three described closed cycle water pumps all stop, if there is the closed cycle water pump not stopped, sending the closed cycle water pump that closed cycle water pump halt instruction not yet stops with stopping；
If three described closed cycle water pumps all stop, judge whether three described closed cycle exit of pump Electrically operated gate are all turned off, if there is the closed cycle water pump being not turned off outlet Electrically operated gate, send the closed cycle water delivery side of pump Electrically operated gate that closed cycle water pump Electrically operated gate out code is not yet closed with closedown.
In one embodiment, before closing ability of swimming synergic system startup step, described method also includes:
Judge that whether whether whether demineralized water main-piping pressure drag a closed cooling water system or the preliminary election of described one-to-one closed cooling water system more than the preliminary election of 0.2MPa, closed cycle water pump and described two, if whether saline main-piping pressure drags a closed cooling water system or described one-to-one closed cooling water system preliminary election more than 0.2MPa, closed cycle water pump preliminary election and described two, close ability of swimming synergic system described in carrying out and start step.
In one embodiment, if three described closed cycle water pumps having one or multiple stage is run, the described startup step that puts into operation is carried out.
In one embodiment, described Starting mode includes: starts described one-to-one closed cooling water system or starts described two and drag a closed cooling water system；
Judge whether described unit valve state information meets the Starting mode in described Starting mode selection information, including:
When starting described one-to-one closed cooling water system, it is judged that whether described unit valve state information is: two drag the valve closing of a closed cooling water system and the valve opening of one-to-one closed cooling water system；
When starting described two and dragging a closed cooling water system, it is judged that whether described unit valve state information is: two drag the valve opening of a closed cooling water system and the valve closing of one-to-one closed cooling water system.
In one embodiment, it is judged that whether the water level in described expansion tank meets preset water level, including: judge that whether the water level in described expansion tank is more than 1000mm.
In one embodiment, judge whether the pressure of enclosed cooling water mother's pipe is more than whether the first preset pressure and expansion tank water level meet pre-conditioned, including: judge the pressure of enclosed cooling water mother's pipe whether more than 0.15MPa and expansion tank water level whether more than 1200mm.
In one embodiment, it is judged that the pressure of described enclosed cooling water mother's pipe whether more than the second preset pressure, including: judge that whether the pressure of described enclosed cooling water mother's pipe is more than 0.45MPa.
In one embodiment, the pressure judging enclosed cooling water mother's pipe according to described enclosed cooling water main-piping pressure information and expansion tank water level information whether whether meet more than the first preset pressure and expansion tank water level pre-conditioned before, described method also includes: wait 10s.
By the present invention, can under closed cooling water system full cut-off state or under part starting state, it is achieved the automatic startup of closed cooling water system, original running status when interference sections does not start；Realize being automatically stopped of closed 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 closing ability of swimming synergic system of the embodiment of the present invention；
Fig. 2 is the structural representation of the one-to-one closed cooling water system of the embodiment of the present invention；
Fig. 3 is the structural representation that the two of the embodiment of the present invention drags a closed cooling water system；
Fig. 4 is the on off control method flow diagram of one embodiment of the invention；
The ability of swimming synergic system of closing that Fig. 5 is the embodiment of the present invention starts flow chart of steps；
Fig. 6 is the startup flow chart of steps that puts into operation of the embodiment of the present invention；
Fig. 7 is the on off control method flow diagram of another embodiment of the present invention；
The system that Fig. 8 is the embodiment of the present invention stops flow chart of steps.
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.
The embodiment of the present invention provides a kind of gas power station closed cooling water system, and this gas power station closed cooling water system includes: two drag a closed cooling water system, one-to-one closed cooling water system and close ability of swimming synergic system.
As shown in Figure 1, this closes ability of swimming synergic system and includes: enclosed cooling water mother's pipe 1, enclosed cooling water backwater mother's pipe 2, three closed cycle water pumps 3, expansion tank 4, three open and close type water-to-water heat exchangers 5, two raw water heaters 6, two unboiled water heating recirculation pumps 7, air compressor cooling water pipeline pump 8, two supercharger cooling water pumps 9, supercharger cooling water pump bypass Electrically operated gate 10, enclosed cooling water programed logic operation button 11, closed cooling water system starts select button 12, closed cycle water pump opens pump quantity select button 13 and standby button 14 thrown by closed cycle water pump interlocking.
Standby button 14 is thrown, it is possible to three closed cycle water pumps of preliminary election by clicking the closed cycle water pump interlocking on closed cooling water system picture.
Pump quantity select button 13 is opened, it is possible to select the method for operation of closed cycle water pump, including " single pump operation ", " double pump operation " and " three pump operations " these three mode by clicking this closed cycle water pump.
Enclosed cooling water mother's pipe 1 is connected to the entrance of heat supply network station water main pipe (not shown)；Enclosed cooling water backwater mother's pipe 2 is connected to the outlet of heat supply network station water main pipe.Closed cycle water pump 3 connects enclosed cooling water mother's pipe 1 by water inlet pipe 31, and connects enclosed cooling water backwater mother's pipe 2 by outlet conduit 32.Open and close type water-to-water heat exchanger 5 connects enclosed cooling water mother's pipe 1.Two supercharger cooling water pumps 9 are connected on the pipeline 21 between enclosed cooling water mother's pipe 1 and heat supply network station water main pipe respectively through inlet duct 91, are connected to gas compressor set cooling water mother's pipe (not shown) by outlet conduit 92；One end of supercharger cooling water pump bypass Electrically operated gate 10 connects gas compressor set cooling water mother pipe, and the other end is connected on the pipeline 21 between enclosed cooling water mother's pipe 1 and heat supply network station water main pipe.Air compressor cooling water pipeline pump 8 is connected on the pipeline 81 between air compressor machine (not shown) and enclosed cooling water backwater mother's pipe.The common port 71 that one common port 61 of two raw water heaters 6 heats recirculation pump 7 with two unboiled water is connected, and another common port 62 of two raw water heaters 6 and another common port 72 of two unboiled water heating recirculation pumps 7 are respectively connecting to enclosed cooling water backwater mother's pipe 2.Expansion tank 4 is connected to enclosed cooling water backwater mother's pipe 2, and is connected to the outlet of desalination Jellyfish pipe (not shown) by closed-up water expansion tank water pipe 41.In one embodiment, expansion tank 4 is additionally coupled to exhaustor 42.
Enclosed cooling water mother's pipe 1 is connected to the supply channel of two supply channels dragging a closed cooling water system and one-to-one closed cooling water system；Enclosed cooling water backwater mother's pipe 2 is connected to the water return pipeline of two water return pipelines dragging a closed cooling water system and one-to-one closed cooling water system.Enclosed cooling water backwater mother's pipe 2 is additionally coupled to the outlet of air compressor machine backwater mother pipe, gas compressor set cooling water backwater mother pipe and heat supply network station return pipe.
During one-to-one closed cooling water system (is also called one-to-one unit), a combustion engine steam turbine in tow, the concrete outcome of one-to-one closed cooling water system is as shown in Figure 2.1001 is No. 2 high pressure water pumps of one-to-one unit waste heat boiler, 1002 is No. 1 high pressure water pump of one-to-one unit waste heat boiler, 1003 is pressure feed pump in one-to-one unit waste heat boiler 2,1004 is pressure feed pump in one-to-one unit waste heat boiler 1,1005 is No. 2 low-pressure coal saver recirculation pumps of one-to-one unit waste heat boiler, and 1006 is No. 1 low-pressure coal saver recirculation pump of one-to-one unit waste heat boiler.2001 is one-to-one unit cooling device.3001 is the solidifying front pump bearing cooler of one-to-one power generator turbine 1,3002 is the solidifying front pump bearing cooler of one-to-one power generator turbine 2,3003 is the solidifying pump motor cooler of one-to-one power generator turbine 1, and 3004 is the solidifying pump motor cooler of one-to-one power generator turbine 2.4001 and 4002 is one-to-one power generator turbine lube oil cooler.Fig. 2 further comprises one-to-one closed cooling water system user and need the valve of operation, repeat no more.
Two drag in a closed cooling water system, and two combustion engine steam turbines in tow, the concrete outcome of one-to-one closed cooling water system is as shown in Figure 3.102 is two drag a unit No. 2 high pressure water pumps of No. 1 waste heat boiler, 103 is two drag a unit No. 1 high pressure water pump of No. 1 waste heat boiler, 104 is two drag in No. 1 waste heat boiler of a unit 2 pressure feed pump, 105 is two drag in No. 1 waste heat boiler of a unit 1 pressure feed pump, 106 is two drag a unit No. 2 low-pressure coal saver recirculation pumps of No. 1 waste heat boiler, and 107 is two drag a unit No. 1 low-pressure coal saver recirculation pump of No. 1 waste heat boiler.201 is two drag a unit No. 2 high pressure water pumps of No. 2 waste heat boilers, 202 is two drag a unit No. 1 high pressure water pump of No. 2 waste heat boilers, 203 is two drag in No. 2 waste heat boilers of a unit 2 pressure feed pump, 204 is two drag in No. 2 waste heat boilers of a unit 1 pressure feed pump, 205 is two drag a unit No. 2 low-pressure coal saver recirculation pumps of No. 2 waste heat boilers, and 206 is two drag a unit No. 1 low-pressure coal saver recirculation pump of No. 2 waste heat boilers.301 is two drag No. 1 cooling device of a unit, and 302 is two drag No. 2 cooling devices of a unit.401 is two drag a power generator turbine electromotor sky side seal oil cooler, 402 is two drag a power generator turbine electromotor hydrogen-side seal oil cooler, 403 is two drag a power generator turbine Generator Stator Cooling device, 404 is two drag a power generator turbine hydrogen cooler of generator, and 407 is two drag a power generator turbine lube oil cooler.501 is two drag a power generator turbine electromotor hydrogen desiccation agent cooler, and 502 is two drag a power generator turbine condensate cooler.Further comprises two in Fig. 3 drags a closed cooling water system user to need the valve of operation, repeats no more.
Closed cycle water pump 3 effect is to cool down water for enclosed to provide pressure head, drives enclosed cooling water to flow through the cooling water heat exchanger of each subsidiary engine equipment of gas power station.The filter screen of closed cycle pump entrance is for preventing bigger impurity particle from entering closed cycle water pump, causing the phenomenon of closed cycle pump shaft bite or locking.Open type cooling water is flow through in open and close type water-to-water heat exchanger side, and enclosed cooling water is flow through in side, and enclosed cooling water is cooled down water-cooled but by this open and close type water-to-water heat exchanger by open type.The effect of expansion tank is to provide inlet head for closed cycle water pump, regulates and buffer container additionally as one, to meet the needs of enclosed cooling water inflow fluctuation.Enclosed cooling water is driven by closed cycle water pump, the cooling water heat exchanger of each subsidiary engine equipment is arrived through enclosed cooling water pipeline, control enclosed cooling water flow through the flow of each subsidiary engine equipment by controlling the aperture of each user's valve, thus reaching to control the purpose of cooled Temperature of Working.
In system shown in Fig. 1 to Fig. 3,Represent pressure-measuring-point,Represent temperature point,Represent water level measuring point,Represent electrically operated valve.
As shown in Figure 4, the present invention provides a kind of on off control method, for the gas power station closed cooling water system shown in Fig. 1 is carried out on off control.This on off control method includes:
S401: close ability of swimming synergic system and start step；
S402: unit optimum selection step；And
S403: put into operation startup step.
Include as it is shown in figure 5, close ability of swimming synergic system startup step:
S501: judge whether to have at least in three described closed cycle water pumps an operation.
If three closed cycle water pumps there being any one or any two have been turned on, then carry out the S403 in Fig. 4, otherwise, carry out S502.Avoid the interference original running status of closed cooling water system, it also avoid the work of the repeated priming of closed cycle water pump.
S502: judge whether closed-up water expansion tank water pipe turns on and whether water level in expansion tank meets preset water level.
When being embodied as, need to receive conducting feedback information and the water level information of expansion tank, if this conducting feedback information includes: expansion tank moisturizing regulate Electrically operated gate in front of the door open, expansion tank moisturizing bypass door closed and expansion tank moisturizing regulate door standard-sized sheet, and the water level in expansion tank (i.e. expansion tank liquid level) is more than preset water level in water level information, then represent that closed-up water expansion tank water pipe has turned on and water level in expansion tank is more than preset water level, it is possible to carry out S503.
Preset water level can be 1000mm in one embodiment, and the present invention is not limited.
If not met expansion tank moisturizing regulates Electrically operated gate in front of the door and opens, expansion tank moisturizing bypass door is closed, water level in expansion tank moisturizing adjustment door standard-sized sheet and expansion tank is not more than one or more in tetra-information of 1000mm, need to enter S504, send the instruction of conducting closed-up water expansion tank water pipe, this instruction includes: opens expansion tank moisturizing and regulates Electrically operated gate in front of the door, close expansion tank moisturizing bypass door and open expansion tank moisturizing adjustment door, regulate Electrically operated gate in front of the door opening expansion tank moisturizing, close expansion tank moisturizing bypass door and open expansion tank moisturizing adjustment door.
S503: judge whether the import and export of three closed cycle water pumps and the import and export of three open and close type water-to-water heat exchangers turn on and judge that expansion tank adjusts whether valve is thrown automatically.
When being embodied as, needing to receive the enabling feedback information of closed cycle water pump, the enabling feedback information of described open and close type water-to-water heat exchanger and expansion tank adjusts valve to throw automatic feedback information, open if the enabling feedback information of closed cycle water pump includes three closed cycle water pumps import and export Electrically operated gate, the enabling feedback information of open and close type water-to-water heat exchanger includes three closed-up water heat exchanger inlet and outlet Electrically operated gate and opens, and expansion tank is adjusted valve throwing automatic feedback information to include throwing expansion tank moisturizing adjustment door and is automatically put into, then carry out S505.
If three closed cycle water pumps are imported and exported Electrically operated gate and are opened, three closed-up water heat exchanger inlet and outlet Electrically operated gate are opened, throwing expansion tank moisturizing adjustment door has put in these three condition automatically has one or more to be unsatisfactory for, then carry out S506, send the import and export of three closed cycle water pumps of conducting and the import and export of three open and close type water-to-water heat exchangers and expansion tank adjusts valve to throw automatic instruction.Illustrate, do not open if three closed-up water heat exchanger inlet and outlet Electrically operated gate exist a closed-up water heat exchanger inlet and outlet Electrically operated gate, then need to carry out S506 and send above-mentioned instruction.This instruction includes: drives three closed cycle water pumps and imports and exports Electrically operated gate, open three closed-up water heat exchanger inlet and outlet Electrically operated gate and throwing expansion tank moisturizing adjustment door is automatic, to complete the unlatching of three closed cycle water pumps import and export Electrically operated gate, the unlatching of three closed-up water heat exchanger inlet and outlet Electrically operated gate and expansion tank moisturizing regulate automatically engaging of door.
S505: judge whether raw water heater, unboiled water heating recirculation pump and air compressor cooling water pipeline pump isolate.
When being embodied as, need to receive the feedback information of closing the door of close the door feedback information and the air compressor cooling water pipeline pump of the feedback information of closing the door of raw water heater, unboiled water heating recirculation pump, if the feedback information of closing the door of raw water heater includes #1 and #2, unboiled water heat exchanger inlet and outlet Electrically operated gate is closed, the feedback information of closing the door of unboiled water heating recirculation pump includes #1 and #2 raw water heater recirculation pump import and export Electrically operated gate and closes, and the feedback information of closing the door of air compressor cooling water pipeline pump is that air compressor cooling water pipeline pump import and export door closes, then carry out S507.
If #1 and #2 unboiled water heat exchanger inlet and outlet Electrically operated gate is closed, #1 and #2 raw water heater recirculation pump is imported and exported Electrically operated gate and is closed, air compressor cooling water pipeline pump import and export door has closed these conditions one or more being unsatisfactory for, then carry out S508, send isolation raw water heater, the instruction of unboiled water heating recirculation pump and air compressor cooling water pipeline pump, to close #1 raw water heater recirculation pump import and export Electrically operated gate, close #2 raw water heater recirculation pump and import and export Electrically operated gate, close #1 unboiled water heat exchanger inlet and outlet Electrically operated gate, close #2 unboiled water heat exchanger inlet and outlet Electrically operated gate, close air compressor cooling water pipeline pump and import and export door.
S507: judge whether heat supply network closed-up water and supercharger cooling water pump have isolated and have judged whether the bypass of supercharger cooling water pump turns on.
When being embodied as, need to receive heat supply network and close the feedback information of closing the door for backwater, the conducting feedback information of close the door feedback information and the bypass of supercharger cooling water pump of supercharger cooling water pump, if heat supply network closes the feedback information of closing the door for backwater for having closed to heat supply network for backwater Electrically operated gate, and the feedback information of closing the door of supercharger cooling water pump includes #1 and #2 supercharger cooling water pump import and export Electrically operated gate and closes, and the conducting feedback information of supercharger cooling water pump bypass is that supercharger cooling water pump bypass Electrically operated gate is left, then heat supply network closed-up water and supercharger cooling water pump isolated and supercharger cooling water pump bypass turn on, carry out S402, perform unit optimum selection step.
If closed to heat supply network for backwater Electrically operated gate, #1 and #2 supercharger cooling water pump is imported and exported Electrically operated gate and is closed, supercharger cooling water pump bypass Electrically operated gate has been left exists one or more being unsatisfactory in these conditions, then perform S509, send the instruction of isolation heat supply network closed-up water and described supercharger cooling water pump and turn on the instruction of described supercharger cooling water pump bypass, to control to close to heat supply network for backwater Electrically operated gate, close #1 supercharger cooling water pump and import and export Electrically operated gate, close #2 supercharger cooling water pump and import and export Electrically operated gate and open supercharger cooling water pump bypass Electrically operated gate.
S402 is a branching step, starts select button by the closed circle water system of Fig. 1, and user can select to start two and drags a closed circle water system or start one-to-one closed circle water system.When being embodied as, it is necessary to the Starting mode receiving unit valve state information and user's input selects information, it is judged that whether unit valve state information meets the Starting mode in Starting mode selection information.
If the Starting mode of user's input selects information two to drag a closed circle water system for selecting to start, it is judged that whether unit valve state information is: two drag the valve opening of a closed cooling water system and the valve closing of one-to-one closed cooling water system.If it is, carry out S403, perform to put into operation startup step；If it does not, open two to drag the valve that a closed circle water system is corresponding, close the valve that one-to-one closed circle water system is corresponding.
If the Starting mode of user's input selects information for selecting to start one-to-one closed circle water system, it is judged that whether unit valve state information is: the valve opening of one-to-one closed cooling water system and two drags the valve closing of a closed cooling water system.If it is, carry out S403, perform to put into operation startup step；If it does not, open the valve that one-to-one closed circle water system is corresponding, close two and drag the valve that a closed circle water system is corresponding.
As shown in Figure 6, the described startup step S403 that puts into operation includes:
S601: judge whether the pressure of enclosed cooling water mother's pipe is more than whether the first preset pressure and expansion tank water level meet pre-conditioned.
When being embodied as, need to receive enclosed cooling water main-piping pressure information and expansion tank water level information, judge that whether the pressure in enclosed cooling water main-piping pressure information is more than the first preset pressure, judge in expansion tank water level information, whether expansion tank water level meets pre-conditioned simultaneously, if the pressure of enclosed cooling water mother's pipe meets pre-conditioned more than the first preset pressure and expansion tank water level, then carry out S602.In one embodiment, the first preset pressure is 0.15MPa, pre-conditioned for expansion tank water level more than 1200mm, the present invention is not limited.
If the pressure of enclosed cooling water mother's pipe is not more than the first preset pressure and/or expansion tank water level is unsatisfactory for pre-conditioned, then need to wait certain time to rejudge, until the pressure of enclosed cooling water mother's pipe meets pre-conditioned more than the first preset pressure and expansion tank water level, then carry out S602.
S602: judge whether the closed cycle exit of pump Electrically operated gate of preliminary election is turned off.
When being embodied as, it is necessary to the closed cycle exit of pump Electrically operated gate receiving preliminary election is closed the door feedback information, judges whether the closed cycle exit of pump Electrically operated gate of preliminary election is turned off according to this；If it does not, carry out S603, send the instruction closing preliminary election closed cycle exit of pump Electrically operated gate, to control to close preliminary election closed cycle exit of pump Electrically operated gate.
If the closed cycle exit of pump Electrically operated gate of preliminary election is turned off, carry out S604.
S604: judge whether the closed cycle water pump of preliminary election runs.
When being embodied as, it is necessary to receive the operation feedback information of the closed cycle water pump of preliminary election, judge whether the closed cycle water pump of preliminary election runs according to this；If the closed cycle water pump off-duty of preliminary election, carrying out S605, send the instruction starting preliminary election closed cycle water pump, the closed cycle water pump to control preliminary election runs.
If knowing that the closed cycle water pump of preliminary election runs by judgement, carry out S606.
S606: judge whether the closed cycle exit of pump Electrically operated gate run has turned on.
When being embodied as, it is necessary to receive the closed cycle exit of pump Electrically operated gate enabling feedback information run, it is judged that whether the closed cycle exit of pump Electrically operated gate of operation has turned on；If it does not, carry out S607, send the instruction opening closed cycle exit of pump Electrically operated gate, to open closed cycle exit of pump Electrically operated gate.
Gas power station closed cooling water system of the present invention is provided with startup pump preliminary election button, by clicking the closed cycle water pump block push button on closed cooling water system picture, it is possible to three closed cycle water pumps of preliminary election.It is embodied in the instruction of S602 to S607, S603 for closing preliminary election delivery side of pump Electrically operated gate, S605 can start preliminary election pump, S607 opens preliminary election delivery side of pump Electrically operated gate.
Open pump quantity select button 13 by clicking this closed cycle water pump, S603 can close all preliminary election delivery side of pump Electrically operated gate, S605 can start the preliminary election pump of respective numbers, S607 can open the preliminary election delivery side of pump Electrically operated gate of respective numbers.
S608: judge that whether the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure.
When being embodied as, need to receive the force value of enclosed cooling water mother's pipe, judge that whether the pressure of enclosed cooling water mother's pipe is more than the second preset pressure according to this force value, if the pressure of enclosed cooling water mother's pipe is not more than the second preset pressure, judge after waiting certain time interval that whether the pressure of enclosed cooling water mother's pipe is more than the second preset pressure again, when the pressure of enclosed cooling water mother's pipe is more than the second preset pressure, carry out S609.
S609: judge whether closed cycle water pump puts into interlocking.
When being embodied as, it is necessary to receive closed cycle water pump interlocking and put into feedback information, judge whether closed cycle water pump puts into interlocking according to this；If closed cycle water pump puts into interlocking, start EP (end of program).
If described closed cycle water pump does not put into interlocking, enter S610, send the instruction that closed-up water interlocking puts into, described closed cycle water pump is put into interlocking.
The main body of the on off control method of the embodiment of the present invention can be computer control system, DCS control system etc., connects and controls each pump of the gas power station closed cooling water system shown in Fig. 1, heat exchanger, heater, Electrically operated gate and valve etc..
In one embodiment, as it is shown in fig. 7, the on off control method of the present invention also includes:
S701: system stops step.
When being embodied as, as shown in Figure 8, system stopping step including:
S801: judge whether closed cycle water pump interlocking has dropped out.
When being embodied as, if receiving the feedback representing that closed-up water interlocking has dropped out, representing that closed cycle water pump interlocking has dropped out, carrying out S8023；Representing that closed-up water is interlocked the feedback that has dropped out if do not received, representing that closed cycle water pump interlocking does not exit, carrying out S802, send the instruction exiting closed-up water interlocking, exit interlocking controlling closed cycle water pump.
S803: judge whether three closed cycle water pumps all stop.
When being embodied as, if receiving the feedback that three closed cycle water pumps all stop, representing that three closed cycle water pumps all stop, carrying out S804；If only receiving the feedback of one or two closed cycle water pump stopping, represent there is the closed cycle water pump not stopped, carry out S805, send the closed cycle water pump that closed cycle water pump halt instruction (namely sending the instruction stopping three closed cycle water pumps) not yet stops with stopping.
S805: judge whether three described closed cycle exit of pump Electrically operated gate are all turned off.
When being embodied as, if receiving three described closed cycle buttoned-up feedbacks of exit of pump Electrically operated gate, representing that three described closed cycle exit of pump Electrically operated gate are all turned off, system stops step and terminates.If only receiving one or two closed cycle buttoned-up feedbacks of exit of pump Electrically operated gate, represent there is the closed cycle exit of pump Electrically operated gate being not turned off, carry out S806, send the instruction closing three closed cycle water pump Electrically operated gate, with the closed cycle water delivery side of pump Electrically operated gate that closedown is not yet closed.
According to foregoing description it can be seen that in the on off control method of the present invention, each step will first judge whether feedback receives, if received, continues next step；If do not received, then sending instruction, waiting to be feedback receiving.
In one embodiment, before closing ability of swimming synergic system startup step, the on off control method of the present invention also includes:
Judge that whether whether whether demineralized water main-piping pressure drag a closed cooling water system or the preliminary election of described one-to-one closed cooling water system more than the preliminary election of 0.2MPa, closed cycle water pump and described two, if whether saline main-piping pressure drags a closed cooling water system or described one-to-one closed cooling water system preliminary election more than 0.2MPa, closed cycle water pump preliminary election and described two, close ability of swimming synergic system described in carrying out and start step.After meeting above three condition, the on off control of closed cooling water system can perform down.
In one embodiment, before carrying out the startup step that puts into operation of S403, in particular, the pressure judging enclosed cooling water mother's pipe according to described enclosed cooling water main-piping pressure information and expansion tank water level information whether whether meet more than the first preset pressure and expansion tank water level pre-conditioned before, described on off control method also includes: wait 10s so that the pressure of enclosed cooling water mother's pipe can disclosure satisfy that pre-conditioned more than the first preset pressure and expansion tank water level.
It should be noted that the on off control method of shutting down of the present invention is not provided with the condition allowing to stop, therefore whenever operations staff is all operable to programme-control stops logic by closed cooling water system stopping.
It should be noted that the programed logic of gas power station closed cooling water system of the present invention (on off control method) 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 programed logic of this gas power station closed cooling water system starts step sequence can automatically engage closed cycle water pump interlocking, and this is embodied in S609 and S610 in the Fig. 6 starting step sequence.After interlocking puts into, when having closed cycle water pump operation and closed cooling water system pressure lower than certain definite value；Or when having arbitrary closed cycle water pump to trip, all can another closed cycle water pump of interlocked startup, thus ensureing that closed cooling water system main-piping pressure is normal.
The present invention can realize three zones:
The first, under closed cooling water system full cut-off state, it is achieved the automatic startup of closed cooling water system；And under operation, it is achieved being automatically stopped of closed cooling water system.
The second, when closed cooling water system part starts, it is achieved the automatic startup of closed cooling water system, and original running status is not disturbed.
3rd, when starting program and running 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 startup program, until closed cooling water system starts complete.
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 closed cooling water system, it is characterised in that described gas power station closed cooling water system includes: two drag a closed cooling water system, one-to-one closed cooling water system and close ability of swimming synergic system；Described ability of swimming synergic system of closing includes:
Enclosed cooling water mother manages, enclosed cooling water backwater mother pipe, three closed cycle water pumps, expansion tank, three open and close type water-to-water heat exchangers, two raw water heaters, two unboiled water heating recirculation pumps, air compressor cooling water pipeline pump, two supercharger cooling water pumps, supercharger cooling water pump bypass Electrically operated gate, enclosed cooling water programed logic operation button, closed cooling water system starts select button, closed cycle water pump opens pump quantity select button, standby button thrown by closed cycle water pump interlocking；
Described enclosed cooling water mother's pipe is connected to the entrance of heat supply network station water main pipe；Described enclosed cooling water backwater mother's pipe is connected to the outlet of described heat supply network station water main pipe；Described closed cycle water pump connects described enclosed cooling water mother pipe by water inlet pipe, and connects described enclosed cooling water backwater mother pipe by outlet conduit；Described open and close type water-to-water heat exchanger connects described enclosed cooling water mother pipe；Described supercharger cooling water pump is connected on the pipeline between described enclosed cooling water mother pipe and described heat supply network station water main pipe by inlet duct, is connected to gas compressor set cooling water mother pipe by outlet conduit；One end of described supercharger cooling water pump bypass Electrically operated gate connects described gas compressor set cooling water mother pipe, and the other end is connected on the pipeline between described enclosed cooling water mother pipe and described heat supply network station water main pipe；Air compressor cooling water pipeline pump is connected on the pipeline between air compressor machine and described enclosed cooling water backwater mother's pipe；Described raw water heater heats recirculation pump with described unboiled water and is connected, and is respectively connecting to described enclosed cooling water backwater mother pipe；Described expansion tank is connected to described enclosed cooling water backwater mother pipe, and is connected to desalination Jellyfish pipe by closed-up water expansion tank water pipe；
Described enclosed cooling water mother's pipe is connected to described two supply channels dragging a closed cooling water system and the supply channel of described one-to-one closed cooling water system；Described enclosed cooling water backwater mother's pipe is connected to described two water return pipelines dragging a closed cooling water system and the water return pipeline of described one-to-one closed cooling water system；Described enclosed cooling water backwater mother's pipe is connected to air compressor machine backwater mother pipe and gas compressor set cooling water backwater mother pipe.
2. the on off control method of the gas power station closed cooling water system that a kind is applied to described in claim 1, it is characterised in that described on off control method includes: close ability of swimming synergic system and start step, unit optimum selection step and the startup step that puts into operation；Wherein
Close ability of swimming synergic system startup step to include:
Judge whether three described closed cycle water pumps have at least an operation；
If three described equal off-duties of closed cycle water pump, receive conducting feedback information and the water level information of described expansion tank, it is judged that whether closed-up water expansion tank water pipe turns on and whether water level in described expansion tank meets preset water level；If it does not, send the instruction of conducting closed-up water expansion tank water pipe；
If closed-up water expansion tank water pipe has turned on and water level in described expansion tank meets preset water level, receiving the enabling feedback information of closed cycle water pump, the enabling feedback information of described open and close type water-to-water heat exchanger and expansion tank adjusts valve to throw automatic feedback information, it is judged that whether the import and export of the import and export of three described closed cycle water pumps and three described open and close type water-to-water heat exchangers turn on and described expansion tank adjusts whether valve is thrown automatically；If it does not, send instruction and the expansion tank tune valve throwing automatic command of the import and export of three described closed cycle water pumps of conducting and the import and export of three described open and close type water-to-water heat exchangers；
If the import and export conducting of the import and export of three described closed cycle water pumps and three described open and close type water-to-water heat exchangers and described expansion tank adjust valve to throw automatically, receive the feedback information of closing the door of close the door feedback information and the air compressor cooling water pipeline pump of the feedback information of closing the door of raw water heater, unboiled water heating recirculation pump, it is judged that whether described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump isolate；If it does not, send the instruction isolating described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump；
If described raw water heater, described unboiled water heating recirculation pump and described air compressor cooling water pipeline pump are isolated, receive heat supply network and close the conducting feedback information for the feedback information of closing the door of backwater, close the door feedback information and the bypass of supercharger cooling water pump of supercharger cooling water pump, it is judged that whether heat supply network closed-up water and described supercharger cooling water pump have isolated and have judged whether the bypass of described supercharger cooling water pump turns on；If it does not, send the instruction of isolation heat supply network closed-up water and described supercharger cooling water pump and turn on the instruction of described supercharger cooling water pump bypass；
If heat supply network closed-up water and described supercharger cooling water pump have been isolated and the bypass of described supercharger cooling water pump turns on, carry out described unit optimum selection step；
Described unit optimum selection step includes:
The Starting mode receiving unit valve state information and user's input selects information, it is judged that whether described unit valve state information meets the Starting mode in described Starting mode selection information；The startup step if it is, put into operation described in carrying out；
The described startup step that puts into operation includes:
Receive enclosed cooling water main-piping pressure information and expansion tank water level information, judge whether the pressure of enclosed cooling water mother's pipe is more than whether the first preset pressure and expansion tank water level meet pre-conditioned according to described enclosed cooling water main-piping pressure information and expansion tank water level information；
If the pressure of enclosed cooling water mother's pipe meets pre-conditioned more than the first preset pressure and expansion tank water level, the closed cycle exit of pump Electrically operated gate receiving preliminary election is closed the door feedback information, it is judged that whether the closed cycle exit of pump Electrically operated gate of described preliminary election is turned off；If it does not, send the instruction closing preliminary election closed cycle exit of pump Electrically operated gate；
If the closed cycle exit of pump Electrically operated gate of described preliminary election is turned off, receive the operation feedback information of the closed cycle water pump of preliminary election, it is judged that whether the closed cycle water pump of described preliminary election runs；If it does not, send the instruction starting preliminary election closed cycle water pump；
If the closed cycle water pump of described preliminary election runs, receive the closed cycle exit of pump Electrically operated gate enabling feedback information run, it is judged that whether the closed cycle exit of pump Electrically operated gate of described operation has turned on；If it does not, send the instruction of open and close type water circulating pump outlet Electrically operated gate；
If the closed cycle exit of pump Electrically operated gate of described operation has turned on, receive the force value of described enclosed cooling water mother's pipe, it is judged that whether the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure；
If the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure, receives closed cycle water pump interlocking and put into feedback information, it is judged that whether described closed cycle water pump puts into interlocking；
If described closed cycle water pump does not put into interlocking, described closed cycle water pump is put into interlocking by the instruction sending closed-up water interlocking input.
3. on off control method according to claim 2, it is characterised in that described method also includes: system stops step, described system stops step and includes:
Judge whether closed cycle water pump interlocking has dropped out, if it does not, send interlocking exit instruction to exit described closed cycle water pump interlocking；
If it is, judge whether three described closed cycle water pumps all stop, if there is the closed cycle water pump not stopped, sending the closed cycle water pump that closed cycle water pump halt instruction not yet stops with stopping；
If three described closed cycle water pumps all stop, judge whether three described closed cycle exit of pump Electrically operated gate are all turned off, if there is the closed cycle water pump being not turned off outlet Electrically operated gate, send the closed cycle water delivery side of pump Electrically operated gate that closed cycle water pump Electrically operated gate out code is not yet closed with closedown.
4. on off control method according to claim 2, it is characterised in that before closing ability of swimming synergic system startup step, described method also includes:
Judge that whether whether whether demineralized water main-piping pressure drag a closed cooling water system or the preliminary election of described one-to-one closed cooling water system more than the preliminary election of 0.2MPa, closed cycle water pump and described two, if whether saline main-piping pressure drags a closed cooling water system or described one-to-one closed cooling water system preliminary election more than 0.2MPa, closed cycle water pump preliminary election and described two, close ability of swimming synergic system described in carrying out and start step.
5. the on off control method according to any one of claim 2-4, it is characterised in that if having in three described closed cycle water pumps or multiple stage is run, carry out the described startup step that puts into operation.
6. the on off control method according to any one of claim 2-4, it is characterised in that described Starting mode includes: start described one-to-one closed cooling water system or start described two and drag a closed cooling water system；
Judge whether described unit valve state information meets the Starting mode in described Starting mode selection information, including:
When starting described one-to-one closed cooling water system, it is judged that whether described unit valve state information is: two drag the valve closing of a closed cooling water system and the valve opening of one-to-one closed cooling water system；
When starting described two and dragging a closed cooling water system, it is judged that whether described unit valve state information is: two drag the valve opening of a closed cooling water system and the valve closing of one-to-one closed cooling water system.
7. the on off control method according to any one of claim 2-4, it is characterised in that judge whether the water level in described expansion tank meets preset water level, including: judge that whether the water level in described expansion tank is more than 1000mm.
8. the on off control method according to any one of claim 2-4, it is characterized in that, judge whether the pressure of enclosed cooling water mother's pipe is more than whether the first preset pressure and expansion tank water level meet pre-conditioned, including: judge the pressure of enclosed cooling water mother's pipe whether more than 0.15MPa and expansion tank water level whether more than 1200mm.
9. the on off control method according to any one of claim 2-4, it is characterized in that, judge that whether the pressure of described enclosed cooling water mother's pipe is more than the second preset pressure, including: judge that whether the pressure of described enclosed cooling water mother's pipe is more than 0.45MPa.
10. the on off control method according to any one of claim 2-4, it is characterized in that, the pressure judging enclosed cooling water mother's pipe according to described enclosed cooling water main-piping pressure information and expansion tank water level information whether whether meet more than the first preset pressure and expansion tank water level pre-conditioned before, described method also includes: wait 10s.
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| CN106247739A (en) * | 2016-09-28 | 2016-12-21 | 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 on off control method thereof |
| CN111504080A (en) * | 2020-05-12 | 2020-08-07 | 国网河北省电力有限公司电力科学研究院 | High-level arranged steam turbine set auxiliary machine cooling water device based on pressure regulating water tank |
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| CN112879890A (en) * | 2021-02-22 | 2021-06-01 | 西安热工研究院有限公司 | Automatic starting control method for whole process of coal-fired unit based on electric water feeding pump |
| CN114233477A (en) * | 2021-12-13 | 2022-03-25 | 中国船舶重工集团公司第七0三研究所 | Variable flow and variable temperature double-loop closed circulation intercooling system of gas turbine |
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| CN114233477A (en) * | 2021-12-13 | 2022-03-25 | 中国船舶重工集团公司第七0三研究所 | Variable flow and variable temperature double-loop closed circulation intercooling system of gas turbine |
| CN114233477B (en) * | 2021-12-13 | 2024-02-20 | 中国船舶重工集团公司第七0三研究所 | Variable flow and variable temperature double-loop closed circulation inter-cooling system of gas turbine |
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