CN110514025A - Once-through cooling water system, power plant system and direct cooling method - Google Patents
Once-through cooling water system, power plant system and direct cooling method Download PDFInfo
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- CN110514025A CN110514025A CN201811389592.5A CN201811389592A CN110514025A CN 110514025 A CN110514025 A CN 110514025A CN 201811389592 A CN201811389592 A CN 201811389592A CN 110514025 A CN110514025 A CN 110514025A
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- water
- condenser
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The present invention relates to a kind of once-through cooling water systems, applied to power plant system, it include: cooling water pump, water inlet pipe, drainpipe, condenser and siphonic water-collecting well, the first end connection of cooling water pump and water inlet pipe, for extracting the water storage for drawing damp storage reservoir in flood storage and detention basin as cooling water；The water inlet of condenser and the second end of water inlet pipe connect, and exchange heat for being passed through cooling water, and the elevation of condenser is higher than the water storage elevation for drawing damp storage reservoir；The water outlet of drainpipe and condenser connection, for the cooling water in condenser to be discharged into siphonic water-collecting well；The overflow weir elevation of weir crest of siphonic water-collecting well is lower than the elevation of condenser water outlet.Draw damp storage reservoir as storage reservoir, without specially building huge storage reservoir using existing in flood storage and detention basin；Has the characteristics that elevated storage due to drawing damp storage reservoir, low water level design is higher, and the position of condenser can accordingly raise, and can reduce the cutting depth of condenser, reduce the cost of system, additionally it is possible to realize water intaking nearby, reduce system energy consumption.
Description
Technical field
The present invention relates to technical field of power generation, more particularly to a kind of once-through cooling water system, power plant system and direct current
Cooling means.
Background technique
Cooling water system in power plant is the waste heat generated in industrial processes for cooled electric generator group, direct current
Cooling water system refers to that cooling water only uses the cooling system being once drained off.Cooling water amount in power plant accounts for full station-service
90% or more of water, therefore generally require power plant construction by the sea, seawater is extracted as power plant's direct cooling water.
But when seabeach beach face is gentle, sea area tidal range is larger and low tide apart from seashore side farther out, bay inclement condition or close
In the case that the sea area seawater sediment content of seashore is high, it can generally be fetched water using sea bed formula, by layout for water intake away from seashore side
Farther out, there is the enough depth of water and in breaker with the abysmal area other than range, but entire water intake system cost is huge, cooling water
Farther out away from intake distance, energy consumption is very high for pump.
Summary of the invention
Based on this, it is necessary to provide a kind of once-through cooling water system, can reduce energy consumption and construction cost.
A kind of once-through cooling water system is applied to power plant system, comprising: cooling water pump, water inlet pipe, drainpipe, condensing
The first end of device and siphonic water-collecting well, cooling water pump and water inlet pipe connects, for extracting the water storage work for drawing damp storage reservoir in flood storage and detention basin
For cooling water；The water inlet of condenser and the second end of water inlet pipe connect, and exchange heat for being passed through cooling water, and condenser
Elevation is higher than the water storage elevation for drawing damp storage reservoir；The water outlet of drainpipe and condenser connection, for by the cooling in condenser
Water is discharged into siphonic water-collecting well；The overflow weir elevation of weir crest of siphonic water-collecting well is lower than the elevation of condenser water outlet.
Above-mentioned once-through cooling water system draws damp storage reservoir as storage reservoir, as cooling using existing in flood storage and detention basin
Water water source, without specially building huge storage reservoir；Since once-through cooling water system construction in flood storage and detention basin, is drawn damp water storage
Library has the characteristics that elevated storage, and low water level design is higher, and the position of condenser can accordingly raise, and can reduce condenser
Cutting depth reduces the cost of system, additionally it is possible to realize water intaking nearby, reduce system energy consumption.
Difference in height value model between the water outlet of condenser and the overflow weir weir crest of siphonic water-collecting well in one of the embodiments,
Enclose is 8 meters~9 meters.
Elevation of the elevation of the water inlet of condenser lower than the water outlet of condenser in one of the embodiments,.
Once-through cooling water system further includes hydrogenerator in one of the embodiments, and hydrogenerator is set to rainbow
The rear chamber for inhaling well, generates electricity for the height difference between water level behind the weir using siphonic water-collecting well and sea tidal level.
Once-through cooling water system further includes closed drain in one of the embodiments, for hydrogenerator to be discharged
Water be discharged into sea.
Hydrogenerator is that axis stretches tubular turbine in one of the embodiments,.
Closed drain is free-draining hidden pipe in one of the embodiments,；Free-draining hidden pipe is set to underground.
A kind of power plant system, including electricity generation system and once-through cooling water system；The condenser of once-through cooling water system is used
Heat exchange cooling is carried out in the steam generated for electricity generation system.
Electricity generation system is thermal power generation system or nuclear power generating system in one of the embodiments,.
A kind of direct cooling method, comprising: draw water from drawing in damp storage reservoir for flood storage and detention basin, be delivered to condenser and changed
Heat, the elevation of condenser are higher than the water storage elevation for drawing damp storage reservoir；Cooling water after heat exchange is discharged into siphonic water-collecting well, siphonic water-collecting well overflows
Flow the elevation that weir elevation of weir crest is lower than condenser water outlet.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flood storage and detention basin；
Fig. 2 is the structural schematic diagram of once-through cooling water system.
Description of symbols:
100, cooling water pump, 200, condenser, 300, water inlet pipe, 400, drainpipe, 500, hydrogenerator, 600, siphon
Well, 700, closed drain.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
" elevation " referred to herein can be absolute elevation and be also possible to relative elevation, need to only guarantee the object to compare
Datum level it is unified.
In a specific embodiment, as shown in Fig. 2, a kind of once-through cooling water system, is applied to power plant system, packet
It includes: cooling water pump 100, water inlet pipe 300, drainpipe 400, condenser 200 and siphonic water-collecting well 600, cooling water pump 100 and water inlet pipe
300 first end connection, for extracting the water storage for drawing damp storage reservoir in flood storage and detention basin as cooling water；Condenser 200 enters water
It mouthful connect with the second end of water inlet pipe 300, exchanges heat for being passed through cooling water, and the elevation of condenser 200 is higher than drawing damp storage
The water storage elevation of reservoir；Drainpipe 400 is connect with the water outlet of condenser 200, for the cooling water in condenser 200 to be discharged into
Siphonic water-collecting well 600；The overflow weir elevation of weir crest of siphonic water-collecting well 600 is lower than the elevation of 200 water outlet of condenser.
Draw damp storage reservoir as storage reservoir using existing in flood storage and detention basin, is as shown in Figure 1 storage as cooling water water source
The structural schematic diagram of detention basin, open drainage gate progress water storage at high tides can reduce without specially building huge storage reservoir
Cooling water system construction cost；Since once-through cooling water system construction is had high-order store with damp storage reservoir in flood storage and detention basin, is drawn
The characteristics of water, since the damp storage reservoir that draws of flood storage and detention basin is designed when building according to national regulation, low water level compares common reservoir
Low water level design want high, therefore same water supply fraction can be reached, while in the case where cooling water pump lift is constant,
Condenser elevation can be raised accordingly, and the cutting depth of condenser 200 can be reduced, and reduce construction cost.
Siphonic water-collecting well 600 is set in once-through cooling water system, the water supply of cooling water pump 100 can be reduced using siphonage
Lift needs to guarantee that the overflow weir elevation of weir crest of siphonic water-collecting well 600 is lower than the height of the water outlet of condenser 200 to realize siphon
Journey realizes siphon using atm difference, by the cooling water drainage in condenser 200 into siphonic water-collecting well to form difference in height.
Difference in height between the water outlet of condenser 200 and the overflow weir weir crest of siphonic water-collecting well 600 in one of the embodiments,
Value range is 8 meters~9 meters.
In order to guarantee the safety of water system, needs to limit siphon using height, can specifically pass through limitation condenser 200
Water outlet and siphonic water-collecting well 600 overflow weir weir crest between height realize that siphon is generally no greater than 8 meters using height, therefore
The value range of difference in height between the water outlet of condenser 200 and the overflow weir weir crest of siphonic water-collecting well 600 is 8 meters~9 meters.
Height of the elevation of the water inlet of condenser 200 lower than the water outlet of condenser 200 in one of the embodiments,
Journey.
In order to enable heat exchange is more abundant, the water inlet elevation of condenser 200 is opened up to be lower than the water outlet of condenser 200
Mouth elevation, as much as possible guarantee cooling water are delivered into after condenser 200 is exchanged heat by low level and are discharged again by a high position.
Once-through cooling water system further includes hydrogenerator 500 in one of the embodiments, and hydrogenerator 500 is set
It is placed in the rear chamber of siphonic water-collecting well 600, is generated electricity for the height difference behind the weir using siphonic water-collecting well 600 between water level and sea tidal level.
Guarantee that the difference in height between the overflow weir weir crest of siphonic water-collecting well 600 and the water outlet of condenser 200 can be realized siphon
Effect, the elevation of siphonic water-collecting well 600 also is also opposite to be raised, and cause water level behind the weir of siphonic water-collecting well 600 also accordingly to increase, water level behind weir
There can be certain height difference between the tidal level of sea, hydrogenerator 500 can be set in the rear chamber of siphonic water-collecting well 600, utilize weir Hou Shui
Height difference between position and sea tidal level carries out hydroelectric generation, recycles complementary energy, meets national energy conservation and emission reduction policy, can reduce power plant
Energy consumption index and station service power consumption rate.
Once-through cooling water system further includes closed drain 700 in one of the embodiments, is used for hydrogenerator
The water of 500 discharges is discharged into sea.
Land used can be saved by carrying out draining using closed drain 700, improve land utilization ratio, while can also play reduction ground
Lower water level, the effect for adjusting soil moisture, improving soil physico-chemical property.
Hydrogenerator 500 is that axis stretches tubular turbine in one of the embodiments,.
It is to be related to foundation in view of the tailwater elevation of hydrogenerator is with many years mean tide tlevel of off-lying sea, belongs to small head
The case where big flow, the comprehensive performance that axis stretches tubular turbine are more suitable this kind of situation.It in some embodiments can also be with
Use axial flow hydraulic turbine.
Closed drain 700 is free-draining hidden pipe in one of the embodiments,；Free-draining hidden pipe is set to underground.
It is marine that free-draining hidden pipe can allow the water of hydrogenerator discharge to be spontaneously discharged under gravity, compared to strong
It arranges more energy saving.
In a specific embodiment, a kind of power plant system, including electricity generation system and above-mentioned once-through cooling water system；
The condenser 200 of once-through cooling water system, the steam for generating for electricity generation system carry out heat exchange cooling.
Heat power generating system is mechanical energy to be converted into using thermal energy, then be converted into electric energy by mechanical energy, in the process can
Steam expansion is generated by high-temperature heating, is converted into mechanical energy, in order to realize circulation, then needs to add again after steam liquefied
Heat, it is therefore desirable to which cooling system exchanges heat, and waste heat is discharged.
Power plant system in the present invention exchanges heat to electricity generation system using the condenser 200 of once-through cooling water system
Steam liquefied cooling, that electricity generation system is generated.
Electricity generation system is thermal power generation system or nuclear power generating system in one of the embodiments,.
Electricity generation system is heat power generating system, can be thermal power generation system in some embodiments, in some embodiments
It can be nuclear power generating system.
In a specific embodiment, a kind of direct cooling method, comprising: taken out from drawing in damp storage reservoir for flood storage and detention basin
Water is delivered to condenser and exchanges heat, and the elevation of condenser is higher than the water storage elevation for drawing damp storage reservoir；By the cooling water after heat exchange
It is discharged into siphonic water-collecting well, the overflow weir elevation of weir crest of siphonic water-collecting well is lower than the elevation of condenser water outlet.
The drainage gate of flood storage and detention basin is opened at high tides, to draw damp water storage reservoir filling, has sufficient storage to guarantee the time of low water also
Water is for cooling down；When needing to cool down electricity generation system, draws water from drawing in damp storage reservoir for flood storage and detention basin, can specifically make
It is drawn water with cooling water pump, the water of extraction is delivered to condenser and is exchanged heat；Cooling water after heat exchange is arranged using siphonic effect
Enter siphonic water-collecting well, in order to realize siphonic effect, needs to guarantee that the overflow weir elevation of weir crest of siphonic water-collecting well is lower than the height of condenser water outlet
Journey.
In another specific embodiment, a kind of direct current cold water water system complementary energy recovery method, comprising: utilize siphonic water-collecting well
Weir after height difference between water level and sea tidal level, generate electricity in siphonic water-collecting well rear chamber setting hydrogenerator；Water wheels after generating electricity
The water of generator discharge is discharged into marine.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of once-through cooling water system is applied to power plant system characterized by comprising cooling water pump, water inlet pipe, row
Water pipe, condenser and siphonic water-collecting well,
The cooling water pump is connect with the first end of the water inlet pipe, for extracting the water storage work for drawing damp storage reservoir in flood storage and detention basin
For cooling water；
The water inlet of the condenser is connect with the second end of the water inlet pipe, is exchanged heat for being passed through cooling water, and described
The elevation of condenser is higher than the water storage elevation for drawing damp storage reservoir；
The drainpipe is connect with the water outlet of the condenser, for the cooling water in the condenser to be discharged into the siphon
Well；
The overflow weir elevation of weir crest of the siphonic water-collecting well is lower than the elevation of the condenser water outlet.
2. once-through cooling water system according to claim 1, which is characterized in that the water outlet of the condenser and the rainbow
Inhaling the difference in height value range between the overflow weir weir crest of well is 8 meters~9 meters.
3. once-through cooling water system according to claim 2, which is characterized in that the elevation of the water inlet of the condenser is low
In the elevation of the water outlet of the condenser.
4. once-through cooling water system according to claim 3, which is characterized in that it further include hydrogenerator,
The hydrogenerator is set to the rear chamber of the siphonic water-collecting well, for utilizing water level and big tide behind the weir of the siphonic water-collecting well
The height difference of interdigit generates electricity.
5. once-through cooling water system according to claim 4, which is characterized in that further include closed drain, being used for will be described
The water of hydrogenerator discharge is discharged into sea.
6. once-through cooling water system according to claim 4 or 5, which is characterized in that the hydrogenerator is stretched for axis to be passed through
Flow water turbine.
7. once-through cooling water system according to claim 5, which is characterized in that the closed drain is that free-draining is dark
Pipe；The free-draining hidden pipe is set to underground.
8. a kind of power plant system, which is characterized in that including electricity generation system and direct cooling water system as described in claim 1
System；
The condenser of the once-through cooling water system, the steam for generating for the electricity generation system carry out heat exchange cooling.
9. power plant system according to claim 8, the electricity generation system is thermal power generation system or nuclear power generating system.
10. a kind of direct cooling method characterized by comprising
It draws water from drawing in damp storage reservoir for flood storage and detention basin, is delivered to condenser and exchanges heat, the elevation of the condenser is higher than institute
State the water storage elevation for drawing damp storage reservoir；
Cooling water after heat exchange is discharged into siphonic water-collecting well, the overflow weir elevation of weir crest of the siphonic water-collecting well is lower than the condenser water outlet
Elevation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811389592.5A CN110514025A (en) | 2018-11-21 | 2018-11-21 | Once-through cooling water system, power plant system and direct cooling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811389592.5A CN110514025A (en) | 2018-11-21 | 2018-11-21 | Once-through cooling water system, power plant system and direct cooling method |
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