CN103713607B - Circulated water system of thermal power plant and operation method - Google Patents
Circulated water system of thermal power plant and operation method Download PDFInfo
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- CN103713607B CN103713607B CN201310744902.1A CN201310744902A CN103713607B CN 103713607 B CN103713607 B CN 103713607B CN 201310744902 A CN201310744902 A CN 201310744902A CN 103713607 B CN103713607 B CN 103713607B
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- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention relates to the Circulated water system of thermal power plant with function of recovering waste heat and operation method, the system is made up of First unit and second unit, and First unit is made up of the first cooling tower, first circulation water pump, the first condenser and the pipeline valve that opens ice, recirculated water backwater main pipe valve, circulating water pipeline valve, recirculated water water main pipe valve, recirculated water booster；Second unit is made up of open ice pipeline valve, second circulation the first valve of water backwater main pipe and second circulation water backwater the second valve of main pipe of the second cooling tower, second circulation water pump, the second condenser, second.The Circulated water system of thermal power plant has the advantages of simple in construction, runing adjustment is flexible, economizing on energy and electricity.
Description
Technical field
The invention belongs to generating equipment cooling technology field, more particularly to a kind of steam power plant with function of recovering waste heat to follow
Ring water system and operation method.
Background technology
In recent years, steam power plant is aided with absorption heat pump recovery circulating water afterheat, realizes that the transformation of energy efficiency is more and more more,
But the problems such as improved heat pump and optimization operation of system performance guarantee and recirculated water, is ignored, especially transforms heat pump
System afterwards combines with the optimization operation of circulation, and there is presently no the case of implementation.
In steam power plant's heat pump recovery circulating water afterheat modernization system, mainly there are two kinds of transform patterns, one kind is to utilize original
Some circulations, heat pump is series to the circulation of condenser outlet, after recirculated water flows out heat pump, followed by entering
Ring pump entrance, then by coagulating, fully enter the upper cooling tower of heat pump or part.When two unit paired runnings, part
Condensate can also be in parallel with adjacent machine water circulating pump outlet by together with pipeline, is then followed by adjacent machine condenser, two units
Ring water out gets in touch with pipeline, returns to the outlet of the machine heat pump；Another pattern is behind heat pump after concatenation, then adds one group of liter
Press pump, after recirculated water flows out heat pump, boosted by booster, after condenser, fully enter heat pump, or the upper cooling water in part
Tower.
The heat pump of mode one is relatively easy, and investment is saved, and its subject matter is to be more than water for heat pump resistance
During tower shaft height, scheme is infeasible, while in operation during off-design operating mode, it is larger to the economic influence of unit.And
Influence of this off-design operating mode to economy, is often run unit and is ignored, or in operation it is difficult to carry out quantitative
Demarcation or examination.In non-severe cold season, when heating demand is relatively low, main frame displacement is big, and environment temperature is high, can cause circulating water temperature
Degree rise, economics of heat pump decline, or influence the safety of low pressure (LP) cylinder exhaust stage blade.The heat pump of mode two adds one group of liter
Press pump and a pipeline, investment is just relatively higher, and system is with regard to more relative complex.Its soluble problem is exactly for heat
When pumping system resistance is more than water tower shaft height, concept feasible；Also the service requirement of heat pump and therrmodynamic system can be met simultaneously,
Off-design operating mode is small, economical operation, it is particularly possible to meets the operation needs of heat pump and the operation of main frame when heating demand is relatively low
Safety.
In the case where country advocates the overall background of energy-saving and emission-reduction energetically, how in energy consumption rich and influential family-power plant field progress depth section
It can tap the latent power, have become the problem that current industry is anxious to be resolved and solves.The cold end circulating water of conventional thermoelectric factory
One of optimal way of uniting, is exactly by two water circulating pumps of a unit, separately designs or transform as high, low speed mode and run,
To the environment temperature and the different load of power plant according to Various Seasonal, respectively in the form of the operation of high low speed combination, meeting
On the premise of the cooling of machine group end requires, the alap power consumption for reducing water circulating pump.The application of power plant's heat pump, it is again
A current energy-saving effective means.And steam power plant's cold end Operation Mode Optimization based on heat pump waste heat recovery system, then
It is to be reinvested, conventional steam power plant's circulating cooling system is combined with improved heat pump waste heat recovery, entered
Row reduces energy consumption, a new ways and means of optimization operation.
The content of the invention
In order to solve the above technical problems, the present invention provide it is a kind of by the improved booster of heat pump and its system,
On the premise of the environment temperature and load variations unit cooling required that meet Various Seasonal, simple in construction, runing adjustment is flexibly square
Just, the Circulated water system of thermal power plant and operation method of economizing on energy and electricity.
The Circulated water system of thermal power plant of the present invention, is made up of, the unit includes First unit, institute an at least unit
It is female by the first steam turbine, the first condenser, first circulation water pump, the first cooling tower, first circulation water backwater to state First unit
Tube valve, first are opened ice pipeline valve, first circulation water backwater main pipe, first circulation water water main pipe, heat pump entrance recirculated water
Pipeline valve, booster outlet valve, booster, heat pump and booster pump inlet circulating water pipeline valve composition, described first
Cooling tower is connected by first circulation water pump, recirculated water water main pipe with the first condenser entrance, the outlet point of the first condenser
For two-way, it is connected all the way by recirculated water backwater main pipe and recirculated water backwater main pipe valve with the first cooling tower, another way is led to
Overheat pump intake circulating water pipeline valve, heat pump, booster, booster outlet valve are connected with first circulation water water main pipe
Connect.
Further, in addition to second unit, second unit is by the second cooling tower, second circulation water pump,
Two-cycle water supply line, the second condenser, second circulation water water return pipeline, second are opened ice pipeline valve and second circulation water
Backwater main pipe valve forms, and second cooling tower passes through second circulation water pump and second circulation water water main pipe and the second condensing
Device entrance is connected, and the outlet of the second condenser passes through second circulation water backwater main pipe and second circulation water backwater main pipe valve and the
Two cooling towers are connected；First circulation water water main pipe is connected by the first communicating door with second circulation water water main pipe；First
Recirculated water backwater main pipe is connected by the second communicating door with second circulation water backwater main pipe, the first cooling tower and the second cooling tower
It is connected by flashboard valve.
Further, the first circulation water pump is made up of with second circulation water pump 1-4 platform parallels connection of pumps.
Further, the recirculated water booster is made up of 1-4 platform parallels connection of pumps.
A kind of circulating-water in thermal power plant operation method, booster at least more than 2, in the first steam turbine start-up course,
Underrun period, or at low ambient temperatures, only run a booster, you can realize and meet unit
The requirement of cooling, under the above situation, recirculated cooling water can be according to following equipment, pipeline and valve order, by with next time
Realize operation in road：First cooling tower, booster pump inlet circulating water pipeline valve, booster, recirculated water valve, the first condensing
Device, recirculated water water return pipeline, recirculated water water return pipeline valve, are then return to the first cooling tower, so move in circles, with the party
When formula is run, heat pump entrance circulating water pipeline valve, first are opened ice pipeline valve, cooling water water inlet main pipe communicating door and cooling water
Backwater main pipe communicating door is in closed mode.
A kind of circulating-water in thermal power plant operation method, in the first steam turbine underload or at low ambient temperatures,
During operation, while run a booster and first circulation water pump, you can realize and meet the requirement of unit cooling, first circulation
Water pump can be the method for operation of high speed or the method for operation of low speed, such a to realize that the operation of different modes is combined
In the case of, while booster and first circulation water pump are run, recirculated cooling water can be suitable according to following equipment, pipeline and valve
Sequence, realized and run by following combined loop：First cooling tower, booster pump inlet circulating water pipeline valve, booster, boosting
Pump discharge circulating water pipeline valve, the first condenser, first circulation water water return pipeline, first circulation water water return pipeline valve, so
After return to the first cooling tower, so move in circles；Running another chilled(cooling) water return (CWR) flowed through simultaneously is：First cooling water
Tower, first circulation water pump, first circulation water inlet channel, the first condenser, first circulation water water return pipeline, first circulation water return
Waterpipe valve, the first cooling tower is then return to, is so moved in circles, when running in this way, heat pump entrance circulating water pipe
Road valve, the first open ice pipeline valve, the first communicating door and the second communicating door are closed.
A kind of circulating-water in thermal power plant operation method, also can be equally with a booster in the second steam turbine isolated operation
Realize power saving operation mode when unit starting or underload, or the fortune arranged side by side by a booster and second circulation water pump
OK, the power saving operation mode of unit is realized, the water circulating pump of operation, can be second circulation water pump or first circulation
Water pump；Water circulating pump and can be high-speed cruising mode or the low speed method of operation, used cooling tower can be with
It is the second cooling tower or the first cooling tower, Main Basiss are exactly to be born according to different environment temperatures and different generatings
Lotus, on the premise of condenser and condenser requirement is met, realize the purpose for saving station service.
A kind of circulating-water in thermal power plant operation method, in the first steam turbine normal operation, the second steam turbine start-up course, low
In load, a booster and first circulation water pump can be run simultaneously, can also realize and meet the condenser of the second steam turbine
The requirement of cooling, so as to realize save station service purpose, first circulation water pump can be high speed the method for operation or
The method of operation of low speed, used cooling tower, can be the first cooling tower to realize that the operation of different modes is combined,
It can be the second cooling tower, under such a operating condition, while run a booster and first circulation water pump, the first cooling tower go out
The boosted pump intake circulating water pipeline valve of mouth recirculated water, booster, boosting pump discharge circulating-water valve door enter first circulation water
Water main pipe, then all the way successively by the first condenser, first circulation water water return pipeline, first circulation water water return pipeline valve
Door, is eventually returned to the first cooling tower；Another way sequentially enters second circulation water water main pipe, second solidifying by the first communicating door
Vapour device, second circulation water backwater main pipe, second circulation water backwater main pipe valve, into the second cooling tower, eventually pass through slide valve
Return in the tower basin of the first cooling tower, at this time it is also possible to which second circulation water backwater main pipe valve is closed, enter from the second condenser
Enter the recirculated water of second circulation water backwater main pipe after the second communicating door enters first circulation water backwater main pipe, through first circulation water
Backwater main pipe valve enters the first cooling tower.
Further, when the system is made up of more units, two units of any of which can circulate according to steam power plant
The water system method of operation is combined operation.
Compared with prior art, Circulated water system of thermal power plant of the invention and its operation method have the beneficial effect that：This hair
Bright steam power plant's cold end Operation Mode Optimization based on heat pump waste heat recovery system, it is not necessary to reinvested, flexible adjustment, by heat
The improved booster of pumping system and its system, unit cooling during normal operation applied to power plant, are meeting Various Seasonal
Environment temperature and load variations unit cooling required on the premise of, effectively save the consumption of station service.This method will be with
Past power plant cycle cooling system and improved heat pump waste heat recovery system, reasonably select and combine, actually generate electricity
Factory field carries out depth energy saving and taped the latent power a kind of new ways and means.The Circulated water system of thermal power plant has simple in construction, operation
The advantages that flexible adjustment is convenient, economizing on energy and electricity.
Brief description of the drawings
Fig. 1 is the Circulated water system of thermal power plant schematic diagram of a unit of the invention；
Fig. 2 is the Circulated water system of thermal power plant schematic diagram of two units of the invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Embodiment 1
As shown in Fig. 2 the Circulated water system of thermal power plant of the present invention, is made up of First unit and second unit.
First unit is by the first cooling tower 104, first circulation water pump 103, heat pump 112, booster 111, the first condensing
Device 102, first are opened ice pipeline valve 106, first circulation water backwater main pipe valve 105, heat pump entrance circulating water pipeline valve
109th, booster pump inlet circulating water pipeline valve 113, first circulation water water main pipe 108,107 groups of first circulation water backwater main pipe
Into.First cooling tower 104 is connected by first circulation water pump 103, recirculated water water main pipe 108 with the entrance of the first condenser 102
Connect, the outlet of the first condenser 102 is divided into two-way, female by first circulation water backwater main pipe 107 and first circulation water backwater all the way
Tube valve 105 is connected with the first cooling tower 104；Another way passes through heat pump entrance recirculated water valve 109, heat pump 112, booster
111st, booster outlet valve 110 is connected with first circulation waterpipe 108 in the first contact passage downstream.
Second unit is by the second steam turbine 201, the second condenser 202, second circulation water pump 203, the second cooling tower
204th, second circulation water water supply line valve 205, second opens ice pipeline valve 206, second circulation water water return pipeline 207, second
Recirculated water water supply line 208 forms.Second cooling tower 204 passes through second circulation water pump 203 and second circulation water water main pipe 208
It is connected with the entrance of the second condenser 202, the second condenser 202 is exported again by second circulation water backwater main pipe 207 and second
Recirculated water backwater main pipe valve 205 is connected with the second cooling tower 204.
First circulation water water supply line 108 is connected by the first communicating door 122 with second recirculated water water supply line 208
Connect；First circulation water backwater main pipe 107 is connected by the first communicating door 121 with second circulation water backwater main pipe 207.First is cold
But tower 104 is connected by gate valve 123 with second cooling tower 204.
When the first steam turbine 101 is run, no matter whether the second steam turbine 201 runs, the start-up course of the first steam turbine 101
In, underrun when or at low ambient temperatures, only run a booster 111, you can realize and meet
The requirement of unit cooling, so as to realize the purpose for saving station service.Realize and run especially by following loop：First cooling tower
After the boosted pump intake recirculated water valve 113 of recirculated water enters the adherence pressure of booster 111 in 104 tower basins, followed through heat pump outlet
Ring penstock 110 enters the first condenser 102 after entering first circulation water water main pipe 108, is then returned by first circulation water
Waterpipe 107, first circulation water water return pipeline valve 105 return to the first cooling tower 104, so move in circles.In this way
During operation, heat pump entrance circulating water pipeline valve 109, first opens ice pipeline valve 106, the first communicating door 122 and the second contact
Door 121 etc. is closed.
Embodiment 2
As shown in Fig. 2 the Circulated water system of thermal power plant in the embodiment of the present invention is by First unit and second unit group
Into.
First unit is by the first cooling tower 104, first circulation water pump 103, heat pump 112, booster 111, the first condensing
Device 102, first are opened ice pipeline valve 106, first circulation water backwater main pipe valve 105, heat pump entrance circulating water pipeline valve
109th, booster pump inlet circulating water pipeline valve 113, first circulation water water main pipe 108,107 groups of first circulation water backwater main pipe
Into.First cooling tower 104 is connected by first circulation water pump 103, recirculated water water main pipe 108 with the entrance of the first condenser 102
Connect, the outlet of the first condenser 102 is divided into two-way, female by first circulation water backwater main pipe 107 and first circulation water backwater all the way
Tube valve 105 is connected with the first cooling tower 104；Another way passes through heat pump entrance recirculated water valve 109, heat pump 112, booster
111st, booster outlet valve 110 is connected with first circulation waterpipe 108 in the first contact passage downstream.
Second unit is by the second steam turbine 201, the second condenser 202, second circulation water pump 203, the second cooling tower
204th, second circulation water water supply line valve 205, second opens ice pipeline valve 206, second circulation water water return pipeline 207, second
Recirculated water water supply line 208 forms.Second cooling tower 204 passes through second circulation water pump 203 and second circulation water water main pipe 208
It is connected with the entrance of the second condenser 202, the second condenser 202 is exported again by second circulation water backwater main pipe 207 and second
Recirculated water backwater main pipe valve 205 is connected with the second cooling tower 204.
First circulation water water supply line 108 is connected by the first communicating door 122 with second recirculated water water supply line 208
Connect；First circulation water backwater main pipe 107 is connected by the first communicating door 121 with second circulation water backwater main pipe 207.First is cold
But tower 104 is connected by gate valve 123 with second cooling tower 204.
When the first steam turbine 101 is run, no matter whether the second steam turbine 201 runs, in the first steam turbine band underload
Or during compared with underload, or at low ambient temperatures, while a booster 111 and first circulation water pump 103 are run,
The requirement of unit cooling is can be achieved and meets, so as to realize the purpose for saving station service.First circulation water pump 103 can be
The method of operation of high speed or the method for operation of low speed, to realize that the operation of different modes is combined.First circulation now
Water pump 103 can also be replaced with second circulation water pump 203.It can specifically be realized by following combined loop and the method for operation：The
Boosted pump intake circulating water pipeline valve 113 boosts recirculated water in the tower basin of one cooling tower 104 into booster 111 all the way
Afterwards, first circulation water water main pipe 108 is entered by the pump discharge circulating water pipeline valve 110 that boosts.Another way is through first circulation
Enter first circulation water water main pipe 108 after water pump 103.The first condenser 102, first circulation are flowed through successively after two path water mixing
Water water return pipeline 107, first circulation water water return pipeline valve 105, are then return to the first cooling tower 104, so move in circles；
When running in this way, heat pump entrance circulating water pipeline valve 109, first opens ice pipeline valve 106, the and of the first communicating door 122
The grade valve of second communicating door 121 is closed.
Embodiment 3
As shown in Fig. 2 the Circulated water system of thermal power plant in the embodiment of the present invention is by First unit and second unit group
Into.
First unit is by the first cooling tower 104, first circulation water pump 103, heat pump 112, booster 111, the first condensing
Device 102, first are opened ice pipeline valve 106, first circulation water backwater main pipe valve 105, heat pump entrance circulating water pipeline valve
109th, booster pump inlet circulating water pipeline valve 113, first circulation water water main pipe 108,107 groups of first circulation water backwater main pipe
Into.First cooling tower 104 is connected by first circulation water pump 103, recirculated water water main pipe 108 with the entrance of the first condenser 102
Connect, the outlet of the first condenser 102 is divided into two-way, female by first circulation water backwater main pipe 107 and first circulation water backwater all the way
Tube valve 105 is connected with the first cooling tower 104；Another way passes through heat pump entrance recirculated water valve 109, heat pump 112, booster
111st, booster outlet valve 110 is connected with first circulation waterpipe 108 in the first contact passage downstream.
Second unit is by the second steam turbine 201, the second condenser 202, second circulation water pump 203, the second cooling tower
204th, second circulation water water supply line valve 205, second opens ice pipeline valve 206, second circulation water water return pipeline 207, second
Recirculated water water supply line 208 forms.Second cooling tower 204 passes through second circulation water pump 203 and second circulation water water main pipe 208
It is connected with the entrance of the second condenser 202, the second condenser 202 is exported again by second circulation water backwater main pipe 207 and second
Recirculated water backwater main pipe valve 205 is connected with the second cooling tower 204.
First circulation water water supply line 108 is connected by the first communicating door 122 with second recirculated water water supply line 208
Connect；First circulation water backwater main pipe 107 is connected by the first communicating door 121 with second circulation water backwater main pipe 207.First is cold
But tower 104 is connected by gate valve 123 with second cooling tower 204.
In the first 101 normal operation of steam turbine, the second steam turbine 201 is in start-up course, band underrun shape
Under state, while run a booster 111 and second circulation water pump 203, can also realize and meet second unit cooling will
Ask, so as to realize the purpose for saving station service.Second circulation water pump 203 can be the method for operation or low speed of high speed
The method of operation, with realize the operation of different modes combine.If first circulation water pump 103 is formed by more, and has stand-by state,
Second circulation water pump 203 can also be replaced with standby first circulation water pump 103.Cooling tower can use cooling tower 104, also may be used
To use cooling tower 204.Circulation moisture two-way, the boosted pump intake circulating water pipe of the first via in the tower basin of first cooling tower 104
Road valve 113 enters booster 111, and then it is female to enter the water supply of first circulation water for boosted pump discharge circulating water pipeline valve 110
Pipe 108.Another way enters first circulation water water main pipe 108 after the boosting of first circulation water pump, after be divided into two-way, the first via passes through
First communicating door 122 sequentially enters second circulation water water main pipe 208, the second condenser 202 and second circulation water backwater main pipe
207.There are two kinds of selections into the recirculated water path of second circulation water backwater main pipe 207, one kind is female through second circulation water backwater
Tube valve 205 enters the second cooling tower 204, then returns to the first cooling tower 104 through gate valve 123；Another kind is through the second contact
Door 121 enters first circulation water backwater main pipe 107；Another way recirculated water in first circulation water water main pipe 108 with from the
The recirculated water of one communicating door 122 sequentially enters the first condenser 102, first circulation water backwater main pipe 107 after converging, and from
The recirculated water of two communicating doors 121 converge after through first circulation water backwater main pipe valve 105 enter the first cooling tower 104；
Embodiment 4
In this example, it is No. two water circulating pumps 203 with the paired running of booster 111, it cools down current direction and example 3
It is identical.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and modification can also be made, these improvement and modification
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. Circulated water system of thermal power plant, it is characterised in that：It is made up of an at least unit, the unit includes First unit,
The First unit is by the first steam turbine, the first condenser, first circulation water pump, the first cooling tower, first circulation water backwater
Main pipe valve, first open ice pipeline valve, first circulation water backwater main pipe, first circulation water water main pipe, heat pump entrance circulation
Waterpipe valve, booster outlet valve, booster, heat pump and booster pump inlet circulating water pipeline valve composition, described the
One cooling tower is connected by first circulation water pump, recirculated water water main pipe with the first condenser entrance, the outlet of the first condenser
It is divided into two-way, is connected all the way by recirculated water backwater main pipe and recirculated water backwater main pipe valve with the first cooling tower, another way
It is connected by heat pump entrance circulating water pipeline valve, heat pump, booster, booster outlet valve with first circulation water water main pipe
Connect；
Also include second unit, second unit is by the second cooling tower, second circulation water pump, second circulation water feed pipe
Road, the second condenser, second circulation water water return pipeline, second are opened ice pipeline valve and second circulation water backwater main pipe valve group
Into, second cooling tower is connected by second circulation water pump and second circulation water water main pipe with the second condenser entrance,
The outlet of second condenser is connected by second circulation water backwater main pipe and second circulation water backwater main pipe valve with the second cooling tower
Connect；
First circulation water water main pipe is connected by the first communicating door with second circulation water water main pipe；First circulation water backwater is female
Pipe is connected by the second communicating door with second circulation water backwater main pipe, and the first cooling tower is connected with the second cooling tower by valve
Connect；
Described first circulation water pump is made up of with second circulation water pump 1-4 platform parallels connection of pumps；
Described booster is composed in parallel by 1-4 platform compression pumps；
Booster at least 2, recirculated cooling water are realized by following loop and transported according to following equipment, pipeline and valve order
OK：
First cooling tower, booster pump inlet circulating water pipeline valve, booster, recirculated water valve, the first condenser, recirculated water
Water return pipeline, recirculated water water return pipeline valve, are then return to the first cooling tower, so move in circles, when running in this way,
Heat pump entrance circulating water pipeline valve, the first open ice pipeline valve, the first communicating door and the second communicating door are in closed mode；
When the system is made up of more units, two units of any of which can be according to the Circulated water system of thermal power plant method of operation
It is combined operation.
2. circulating-water in thermal power plant operation method, it is characterised in that：Run booster and first circulation water pump, recirculated cooling water simultaneously
According to following equipment, pipeline and valve order, realized and run by following combined loop：
First cooling tower, booster pump inlet circulating water pipeline valve, booster, boosting pump discharge circulating water pipeline valve, the
One condenser, first circulation water water return pipeline, first circulation water water return pipeline valve, are then return to the first cooling tower, so
Move in circles；Running another chilled(cooling) water return (CWR) flowed through simultaneously is：First cooling tower, first circulation water pump, first circulation
Water inlet channel, the first condenser, first circulation water water return pipeline, first circulation water water return pipeline valve, are then return to first
Cooling tower, so move in circles, when running in this way, heat pump entrance circulating water pipeline valve, first open ice pipeline valve,
First communicating door and the second communicating door are closed；
In the second steam turbine isolated operation, power saving operation mode when realizing unit starting or underload with a booster,
Or the paired running by a booster and second circulation water pump, realize the power saving operation mode of unit.
3. circulating-water in thermal power plant operation method, it is characterised in that：A booster and first circulation water pump are run simultaneously, and circulation is cold
But water is realized by following combined loop and run according to following equipment, pipeline and valve order：
The boosted pump intake circulating water pipeline valve of first cooling tower outlet recirculated water, booster, boosting pump discharge circulating-water valve
Door enters first circulation water water main pipe, is then followed successively by the first condenser, first circulation water water return pipeline, first all the way
Ring water water return pipeline valve, is eventually returned to the first cooling tower；Another way sequentially enters second circulation water by the first communicating door
Water main pipe, the second condenser, second circulation water backwater main pipe, second circulation water backwater main pipe valve, into the second cooling tower,
Slide valve is eventually passed through to return in the tower basin of the first cooling tower, at this time it is also possible to second circulation water backwater main pipe valve is closed,
The recirculated water for entering second circulation water backwater main pipe from the second condenser enters first circulation water backwater main pipe through the second communicating door
Afterwards, the first cooling tower is entered through first circulation water backwater main pipe valve.
4. the circulating-water in thermal power plant operation method according to Claims 2 or 3, it is characterised in that：The water circulating pump of operation, is adopted
With first circulation water pump or second circulation water pump；Cooling tower, using the first cooling tower or the second cooling tower.
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| CN105806012B (en) * | 2014-12-31 | 2018-09-07 | 国家电网公司 | Gas power station recirculating cooling water system and its start-up and shut-down control method |
| CN105807803B (en) * | 2014-12-31 | 2018-11-06 | 国家电网公司 | Gas power station closed cooling water system and its start-up and shut-down control method |
| CN104776666A (en) * | 2015-04-02 | 2015-07-15 | 南京祥源动力供应有限公司 | Energy-saving and consumption-reducing circulating cooling water supply system |
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