CN109268194A - A kind of system and method improving power station technical water supply reliability - Google Patents
A kind of system and method improving power station technical water supply reliability Download PDFInfo
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- CN109268194A CN109268194A CN201811377072.2A CN201811377072A CN109268194A CN 109268194 A CN109268194 A CN 109268194A CN 201811377072 A CN201811377072 A CN 201811377072A CN 109268194 A CN109268194 A CN 109268194A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 199
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 81
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 17
- 238000007667 floating Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005336 cracking Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 239000002349 well water Substances 0.000 claims description 3
- 235000020681 well water Nutrition 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 3
- 208000036828 Device occlusion Diseases 0.000 abstract description 2
- 230000001932 seasonal effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
-
- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/004—Valve arrangements
-
- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/08—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for removing foreign matter, e.g. mud
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Hydraulic Turbines (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a kind of system and methods for improving power station technical water supply reliability, the system includes by pressure stabilizing pond, water circulating pump, first valve, cooling equipment, the closed cooling system of second valve and open type heat exchanger composition, by seepage tunnel, penstock water intaking valve, water filter, third valve, spray equipment, settling pit, pressure stabilizing pond, 5th valve, cooling equipment, the open cooling system of 6th valve and drainage arrangement composition, and it is fetched water valve by penstock, water filter, third valve, spray equipment, open type heat exchanger, settling pit, the cooling system of 4th valve and drainage arrangement composition；The invention also discloses the working methods of the system；The present invention is suitable for the power station that water quality is poor or water quality is obvious with seasonal variations, be able to solve because in water silt, suspended matter it is more due to caused by cooling device blockage, the blockage problem transfer phenomena being likely to occur is eliminated simultaneously, significantly improves the reliability of power station technical water supply system.
Description
Technical field
The invention belongs to power station technical water supply system fields, and in particular to power station technical water supply can be improved in one kind can
By the system and method for property, it is able to solve the cooling device blockage that open system may cause, while blocking can be eliminated
Problem transfer phenomena.
Background technique
Power station pushes hydrogenerator to generate electricity by the way that high-level water source is introduced workshop, and water is then drained into low level tail
It is a kind of clean energy resource generation technology in water tunnel.To the end of the year 2017,3.41 hundred million kilowatts of China's total installed capacity of hydropower, account for about whole electricity
The 19.2% of power installation, 1,194,500,000,000 kilowatt hour of water power generated energy in 2017 accounts for about the 18.5% of whole generated energy.Power station skill
The main function of art water system is the matched various electromechanical equipments of cooler group, mainly includes air cooler of generator, hair
Motor thrust bearing and guide bearing, turbine guide bearing, main transformer etc., to ensure its safe and stable operation.
Power station is generally built in the biggish mountainous region of topography drop, river region, and the water source of technical water supply system is general
For the Natural Water for power generation, according to the difference of power station condition of water quality, the type of cooling of use can be divided into open system and close
Formula system.When water quality of river condition is preferable, through frequently with open system, i.e., fetching water from diversion tunnel and passing through certain filtration treatment
After to be directly used in equipment cooling, or first lead to settling pit after water intaking and carry out precipitating to be subsequently used for equipment cooling, the system equipment compared with
Less, operating cost is low；When water quality of river condition is poor, for example silt and white pollution are more (especially in flood season), are
It prevents cooling equipment blocking, guarantee unit normal power generation, can be used closed system, i.e., cooling water passes through circulating pump, radiator, steady
The equipment such as water tank are pressed to constitute closed circuit, river water is not direct to be contacted with cooling equipment, and the system equipment is more, operating cost is high,
And special requirement is equipped with to space bit.
Granted patent CN206591566U proposes a kind of technical water supply system that power station open and close type combines, which can
In a manner of the switchover operation when water quality is with seasonal variations, but the blockage problem of heat exchanger is not solved at all, only
External heat exchanger has been transferred to by cooling equipment.The technology that granted patent CN207652235 proposes a kind of running of pumps in series parallel connection supplies
Water system, main purpose are to save whole cooling water amount.Granted patent CN102518094A proposes a kind of fully-loaded stream
Power station turbine-generator units technical water supply system, this method require to be equipped with underground water source pumping plant, and ground is utilized when water quality is poor
It is lauched and equipment is cooled down.
Domestic much built power stations all use open type technical water supply system, for reduce silt in cooling water and
Generally settling pit can be arranged in power station high level in white pollution content.As time integral and upstream river pollution aggravate,
Cooling equipment blocking is still resulted in by the cooling water of settling pit, while the salvaging cleaning works of settling pit is very frequent, increases
The maintenance difficulties of system are added.Existing upgrading thinking is to transform open system as closed system, wherein by enclosed system
The radiator of system is placed among tailwater tunnel, but for built power station, needs to excavate ontology concrete structure,
Construction risk is larger；Furthermore it is likely to result in the junction leak of system and tailwater tunnel, and radiator can only be big in unit
It just can be carried out maintenance when repairing, once radiator, which goes wrong, will cause compressor emergency shutdown.
Summary of the invention
To solve the problems, such as since silt, floating material excessively cause cooling equipment blocking in water, it is an object of the invention to
A kind of system and method for improving power station technical water supply system reliability is provided, which eliminates closed cooling system
In the blockage problem transfer phenomena that is likely to occur greatly reduce and apply compared with external heat exchanger is placed in tail race tunnel
Work risk and maintenance difficulties, this method make full use of power station existing equipment basic, have difficulty of construction is small, cost of investment is low,
Advantage easy to maintain.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of system improving power station technical water supply reliability, including by pressure stabilizing pond 1, water circulating pump 2, the first valve
3, the closed cooling system that cooling equipment 4, the second valve 5 and open type heat exchanger 6 form, is taken by seepage tunnel 17, penstock
Penstock 7, water filter 8, third valve 9, spray equipment 10, settling pit 11, pressure stabilizing pond 1, the 5th valve 14, cooling equipment 4,
The open cooling system that 6th valve 15 and drainage arrangement 13 form, and by penstock water intaking valve 7, water filter 8, third
The cooling system that valve 9, spray equipment 10, open type heat exchanger 6, settling pit 11, the 4th valve 12 and drainage arrangement 13 form；
1 water outlet of pressure stabilizing pond divides two-way, is connected to cooling equipment 4 with the first valve 3 by water circulating pump 2 all the way and intakes
Mouthful, another way is connected to cooling 4 water inlet of equipment by the 5th valve 14, and cooling 4 water outlet of equipment divides two-way, passes through second all the way
Valve 5 is connected to open type heat exchanger 6, and another way is further divided into two branches, the direct communicated drainage dress of a branch after passing through the 6th valve 15
13 entrances are set, another branch is connected to 11 water outlet of settling pit by the 4th valve 12, and settling pit 11 is arranged at 6 bottom of open type heat exchanger
Portion, pressure stabilizing pond 1 contact settling pit 11 and are arranged, the river water in settling pit 11 can overflow to pressure stabilizing pond 1, open type heat exchanger 6
Outlet is connected with pressure stabilizing pond 1；Penstock water intaking valve 7 is equipped between seepage tunnel 17 and water filter 8, water filter 8 exports
Divide two-way, cooling 4 water inlet of equipment is connected to by the 7th valve 16 all the way, another way passes through the connection spray equipment of third valve 9
10, the setting of spray equipment 10 is directly flanked with open type heat exchanger 6 at 6 top of open type heat exchanger by the water of spray equipment 10 outside
Touching, subsequently flows into settling pit 11, and the 4th valve 12 is equipped between settling pit 11 and drainage arrangement 13.
The working method of the system of the raising power station technical water supply reliability, including following three operating mode；
Operating mode one: when containing a small amount of silt and floating material in water, substantially may be used using water filter 8 and settling pit 11
So that treated, water quality meets cooling requirement, closes the 7th valve 16, the first valve 3, the second valve 5 and the 4th valve at this time
12, cracking pressure steel pipe water intaking valve 7, third valve 9, the 5th valve 14 and the 6th valve 15；By seepage tunnel 17 come
Water is filtered by penstock water intaking valve 7 into water filter 8 for the first time, then is entered through third valve 9, spray equipment 10 and sunk
Sand basin 11, the water overflow after sedimentation enter cooling equipment 4 through the 5th valve 14, flow after through the 6th valve 15 to pressure stabilizing pond 1
Enter drainage arrangement 13；In this mode, river water directly cools down cooling equipment 4 after filtering and sedimentation, subsequent river water row
It is the common operating mode of power station open cooling system to tail water；
If silt, floater content further increase in water, the river water after settling pit settles still can contain
Compared with high concentration of sediment and floating material, heat exchanger blocking, equipment damage will cause, while the salvaging cleaning works of settling pit also ten divides
It is numerous, operating mode two should be opened at this time；
Operating mode two: cracking pressure steel pipe water intaking valve 7, third valve 9, the 4th valve 12, the first valve 3 and second
Valve 5 closes the 7th valve 16, the 5th valve 14 and the 6th valve 15；It is taken from the river water of seepage tunnel 17 through penstock
Penstock 7 is filtered for the first time into water filter 8, is entered spray equipment 10 through third valve 9, is then sprayed to open type heat exchanger
6 outer surfaces cool down the clean water in it, and river water subsequently enters settling pit 11 and enters drainage arrangement through the 4th valve 12 again
13, settling pit 11 plays the role of storage, buffering at this time, which is radiation processes；In this mode, it is in pressure stabilizing pond 1
Clean water without silt, floating material, clean water are provided by well water or tap water, clean water and the river water from seepage tunnel 17
It is not directly contacted with, by entering cooling equipment 4 through the first valve 3 after the pressurization of circulating pump 2, the clean water after heating passes through clean water again
Second valve 5, which enters in open type heat exchanger 6, to radiate, and the clean water after cooling comes back to pressure stabilizing pond 1 again and constitutes closure
Cyclic process, the process are enclosed cooling procedures；Cooling equipment 4 constantly release heat in enclosed cooling procedure, the heat is by dissipating
Thermal process is constantly taken away by open type heat exchanger 6；Due to outside the heat exchanger tube of open type heat exchanger 6 without shell-side structure, even if from diversion
Contain a large amount of silts and floating material in the water in tunnel 17, open type heat exchanger 6 will not be caused to block；Operating mode two is using clearly
Clean water is directly contacted with cooling equipment 4, while open type heat exchanger 6 and settling pit 11 effectively being combined, and is set solving cooling
The phenomenon that blockage problem is transferred to external heat exchanger is also eliminated while standby 4 blockage problem；
Operating mode three: the operating mode is a kind of protection standby mode, when operating mode one and operating mode two occur
When failure, cooling equipment 4 can due to lack cooling water and when damaging in enabling or water without silt and floating material when use；This
When cracking pressure steel pipe water intaking valve 7, the 7th valve 16 and the 6th valve 15, close third valve 9, the first valve 3, the 5th valve
Door the 14, second valve 5 and the 4th valve 12, by seepage tunnel 17 come water fetch water valve 7,8 and of water filter through penstock
7th valve 16 leads directly to cooling equipment 4, then enters drainage arrangement 13 by the 6th valve 15.
Compared to the prior art compared with the present invention has following advantage:
The present invention still can be able to be water wheels according to water quality difference switching working mode, even if the water quality of river water is poor
The reliable refrigerating function of the offers such as guide bearing, thrust bearing, aerial cooler, the transformer of machine；It is placed on by external heat exchanger
Remodeling method in tailwater tunnel is compared, and be can be avoided and is excavated to power station ontology concrete structure, and can be at any time
Maintenance, reduces difficulty of construction and operation risk.
Detailed description of the invention
Fig. 1 is system schematic of the invention.
In figure:
1- pressure stabilizing pond 2- water circulating pump 3- the first valve 4- cools down equipment
5- the second valve 6- open type heat exchanger 7- penstock water intaking valve 8- water filter
9- third valve 10- spray equipment 11- settling pit
The 6th valve of the 4th the 5th valve 15- of valve 13- drainage arrangement 14- of 12-
The 7th seepage tunnel valve 17- 18- diversion butterfly valve 19- hydrogenerator of 16-
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, river water is guided to diversion butterfly valve 18 by upper pond by seepage tunnel 17, river water is then pushed
Hydrogenerator 19 generates electricity, and technical water supply system has to last for cooling down the rotatable parts of generating set in the process.This hair
A kind of bright system for improving power station technical water supply reliability, including by pressure stabilizing pond 1, water circulating pump 2, the first valve 3, cooling
The closed cooling system that equipment 4, the second valve 5 and open type heat exchanger 6 form, by seepage tunnel 17, penstock water intaking valve
7, water filter 8, third valve 9, spray equipment 10, settling pit 11, pressure stabilizing pond 1, the 5th valve 14, cooling equipment 4, the 6th valve
Door 15 and drainage arrangement 13 form open cooling system, and by penstock water intaking valve 7, water filter 8, third valve 9,
The cooling system that spray equipment 10, open type heat exchanger 6, settling pit 11, the 4th valve 12 and drainage arrangement 13 form；Specific connection
Relationship are as follows: 1 water outlet of pressure stabilizing pond divides two-way, and cooling 4 water inlet of equipment is connected to the first valve 3 by water circulating pump 2 all the way,
Another way is connected to cooling 4 water inlet of equipment by the 5th valve 14, and cooling 4 water outlet of equipment divides two-way, passes through the second valve all the way
Door 5 is connected to open type heat exchanger 6, and another way is further divided into two branches, the direct communicated drainage device of a branch after passing through the 6th valve 15
13 entrances, another branch are connected to 11 water outlet of settling pit by the 4th valve 12, and settling pit 11 is arranged at 6 bottom of open type heat exchanger
Portion, pressure stabilizing pond 1 contact settling pit 11 and are arranged, the river water in settling pit 11 can overflow to pressure stabilizing pond 1, open type heat exchanger 6
Outlet is connected with pressure stabilizing pond 1；Penstock water intaking valve 7 is equipped between seepage tunnel 17 and water filter 8, water filter 8 exports
Divide two-way, cooling 4 water inlet of equipment is connected to by the 7th valve 16 all the way, another way passes through the connection spray equipment of third valve 9
10, the setting of spray equipment 10 is directly flanked with open type heat exchanger 6 at 6 top of open type heat exchanger by the water of spray equipment 10 outside
Touching, subsequently flows into settling pit 11, and the 4th valve 12 is equipped between settling pit 11 and drainage arrangement 13.
Operating mode one: when containing a small amount of silt and floating material in water, substantially may be used using water filter 8 and settling pit 11
So that treated, water quality meets cooling requirement, closes the 7th valve 16, the first valve 3, the second valve 5 and the 4th valve at this time
12, cracking pressure steel pipe water intaking valve 7, third valve 9, the 5th valve 14 and the 6th valve 15；By seepage tunnel 17 come
Water is filtered by penstock water intaking valve 7 into water filter 8 for the first time, then is entered through third valve 9, spray equipment 10 and sunk
Sand basin 11, the water overflow after sedimentation enter cooling equipment 4 through the 5th valve 14, flow after through the 6th valve 15 to pressure stabilizing pond 1
Enter drainage arrangement 13；In this mode, river water directly cools down cooling equipment 4 after filtering and sedimentation, subsequent river water row
It is the common operating mode of power station open cooling system to tail water.
If silt, floater content further increase in water, the river water after settling pit settles still can contain
Compared with high concentration of sediment and floating material, heat exchanger blocking, equipment damage will cause, while the salvaging cleaning works of settling pit also ten divides
It is numerous, operating mode two should be opened at this time.
Operating mode two: cracking pressure steel pipe water intaking valve 7, third valve 9, the 4th valve 12, the first valve 3 and second
Valve 5 closes the 7th valve 16, the 5th valve 14 and the 6th valve 15；It is taken from the river water of seepage tunnel 17 through penstock
Penstock 7 is filtered for the first time into water filter 8, is entered spray equipment 10 through third valve 9, is then sprayed to open type heat exchanger
6 outer surfaces cool down the clean water in it, and river water subsequently enters settling pit 11 and enters drainage arrangement through the 4th valve 12 again
13, settling pit 11 plays the role of storage, buffering at this time, which is radiation processes；In this mode, it is in pressure stabilizing pond 1
Clean water without silt, floating material, clean water can clean water source by well water or tap water etc. and provide, clean water with from diversion tunnel
The river water in road 17 is not directly contacted with, and clean water is by entering cooling equipment 4 through the first valve 3 after the pressurization of circulating pump 2, after heating
Clean water again through the second valve 5 enter open type heat exchanger 6 in radiate, the clean water after cooling comes back to pressure stabilizing water again
Pond 1 constitutes closed circulation process, which is enclosed cooling procedure.Cooling equipment 4 constantly release heat in enclosed cooling procedure,
The heat is constantly taken away by radiation processes by open type heat exchanger 6.Due to outside the heat exchanger tube of open type heat exchanger 6 without shell-side structure,
Even if containing a large amount of silts and floating material from the water of seepage tunnel 17, open type heat exchanger 6 will not be caused to block.Working mould
Formula two is directly contacted with cooling equipment 4 using clean water, while open type heat exchanger 6 and settling pit 11 effectively being combined,
The phenomenon that blockage problem is transferred to external heat exchanger is also eliminated while solving cooling 4 blockage problem of equipment.
Operating mode three: the operating mode is a kind of protection standby mode, when operating mode one and operating mode two occur
When failure, cooling equipment 4 can due to lack cooling water and when damaging in enabling or water without silt and floating material when use；This
When cracking pressure steel pipe water intaking valve 7, the 7th valve 16 and the 6th valve 15, close third valve 9, the first valve 3, the 5th valve
Door the 14, second valve 5 and the 4th valve 12, by seepage tunnel 17 come water fetch water valve 7,8 and of water filter through penstock
7th valve 16 leads directly to cooling equipment 4, then enters drainage arrangement 13 by the 6th valve 15, drainage arrangement 13 usually with
Tailwater tunnel is connected.Under normal circumstances, the 7th valve 16 is normal closed gate, and when other operational modes break down, cooling is set
Standby 4 may damage due to lacking cooling water, at this time the 7th valve 16 of emergency opening, can be in a short time cooling equipment 4
A certain amount of cooling water is provided, is raced against time for accident treatment.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited to above-mentioned specific embodiment parties
Formula, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art are in this hair
Under bright enlightenment, without deviating from the spirit of the invention, many variations can also be made, these belong to guarantor of the invention
Within shield.It is all to be made a non-material change to the present invention using this design, it should belong to the row for invading the scope of the present invention
For.
Claims (2)
1. a kind of system for improving power station technical water supply reliability, it is characterised in that: including by pressure stabilizing pond (1), recirculated water
The closed cooling system that pump (2), the first valve (3), cooling equipment (4), the second valve (5) and open type heat exchanger (6) form, by
Seepage tunnel (17), penstock water intaking valve (7), water filter (8), third valve (9), spray equipment (10), settling pit
(11), what pressure stabilizing pond (1), the 5th valve (14), cooling equipment (4), the 6th valve (15) and drainage arrangement (13) formed opens
Formula cooling system, and by penstock water intaking valve (7), water filter (8), third valve (9), spray equipment (10), open type
The cooling system that heat exchanger (6), settling pit (11), the 4th valve (12) and drainage arrangement (13) form；
Pressure stabilizing pond (1) water outlet divides two-way, all the way by water circulating pump (2) be connected to the first valve (3) cool down equipment (4) into
The mouth of a river, another way are connected to cooling equipment (4) water inlet by the 5th valve (14), and cooling equipment (4) water outlet divides two-way, all the way
Open type heat exchanger (6) are connected to by the second valve (5), another way is further divided into two branches, a branch after passing through the 6th valve (15)
Direct communicated drainage device (13) entrance, another branch are connected to settling pit (11) water outlet, settling pit by the 4th valve (12)
(11) in open type heat exchanger (6) bottom, pressure stabilizing pond (1) contacts settling pit (11) setting, the river water in settling pit (11) for setting
Can overflow to pressure stabilizing pond (1), open type heat exchanger (6) outlet is connected with pressure stabilizing pond (1)；Seepage tunnel (17) and water filter
(8) penstock water intaking valve (7) is equipped between, water filter (8) outlet divides two-way, is connected to all the way by the 7th valve (16) cold
But equipment (4) water inlet, another way are arranged by third valve (9) connection spray equipment (10), spray equipment (10) in open type
At the top of heat exchanger (6), by the water of spray equipment (10) directly with open type heat exchanger (6) outer side contacts, settling pit is subsequently flowed into
(11), the 4th valve (12) is equipped between settling pit (11) and drainage arrangement (13).
2. the working method of the system described in claim 1 for improving power station technical water supply reliability, it is characterised in that: including
Following three operating mode；
Operating mode one: when containing a small amount of silt and floating material in water, can be made substantially using water filter 8 and settling pit 11
Water quality that treated meets cooling requirement, closes the 7th valve 16, the first valve 3, the second valve 5 and the 4th valve 12 at this time,
Cracking pressure steel pipe water intaking valve 7, third valve 9, the 5th valve 14 and the 6th valve 15；By seepage tunnel 17 come water warp
Excess pressure steel pipe water intaking valve 7 is filtered for the first time into water filter 8, then enters settling pit through third valve 9, spray equipment 10
11, the water overflow after sedimentation enters cooling equipment 4 through the 5th valve 14, flows into and arrange through the 6th valve 15 after to pressure stabilizing pond 1
Water installations 13；In this mode, river water directly cools down cooling equipment 4 after filtering and sedimentation, and subsequent river water drains into tail
It is the common operating mode of power station open cooling system among water；
If silt, floater content further increase in water, the river water after settling pit settles still can contain more
Silt and floating material will cause heat exchanger blocking, equipment damage, while the salvaging cleaning works of settling pit is also very frequent, this
When should open operating mode two；
Operating mode two: cracking pressure steel pipe water intaking valve 7, third valve 9, the 4th valve 12, the first valve 3 and the second valve
5, close the 7th valve 16, the 5th valve 14 and the 6th valve 15；From the river water of seepage tunnel 17 through penstock water intake valve
Door 7 is filtered for the first time into water filter 8, is entered spray equipment 10 through third valve 9, is then sprayed to outside open type heat exchanger 6
Surface cools down the clean water in it, and river water subsequently enters settling pit 11 and enters drainage arrangement 13 through the 4th valve 12 again,
Settling pit 11 plays the role of storage, buffering at this time, which is radiation processes；In this mode, it is free from pressure stabilizing pond 1
The clean water of silt, floating material, clean water are provided by well water or tap water, and clean water and the river water from seepage tunnel 17 be not straight
Contact, clean water is by entering cooling equipment 4 through the first valve 3 after the pressurization of circulating pump 2, and the clean water after heating is again through second
Valve 5, which enters in open type heat exchanger 6, to radiate, and the clean water after cooling comes back to pressure stabilizing pond 1 again and constitutes closed circulation
Process, the process are enclosed cooling procedures；Cooling equipment 4 constantly release heat in enclosed cooling procedure, the heat was by radiating
Journey is constantly taken away by open type heat exchanger 6；Due to outside the heat exchanger tube of open type heat exchanger 6 without shell-side structure, even if from seepage tunnel
Contain a large amount of silts and floating material in 17 water, open type heat exchanger 6 will not be caused to block；
Operating mode three: the operating mode is a kind of protection standby mode, when operating mode one and operating mode two break down
When, cooling equipment 4 can due to lack cooling water and when damaging in enabling or water without silt and floating material when use；It opens at this time
Penstock water intaking valve 7, the 7th valve 16 and the 6th valve 15 are opened, third valve 9, the first valve 3, the 5th valve are closed
14, the second valve 5 and the 4th valve 12, by seepage tunnel 17 come water fetch water valve 7, water filter 8 and the through penstock
Seven valves 16 lead directly to cooling equipment 4, then enter drainage arrangement 13 by the 6th valve 15.
Priority Applications (1)
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