CN205805818U - A kind of thermal power station tail water retracting device - Google Patents
A kind of thermal power station tail water retracting device Download PDFInfo
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- CN205805818U CN205805818U CN201620741375.8U CN201620741375U CN205805818U CN 205805818 U CN205805818 U CN 205805818U CN 201620741375 U CN201620741375 U CN 201620741375U CN 205805818 U CN205805818 U CN 205805818U
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Abstract
This utility model discloses a kind of thermal power station tail water retracting device, it is characterised in that: directly drive refrigeration compressor (11) by the hydraulic turbine (1)；It is inner and be cooled directly with water that the first condenser (12) in cooling cycle system and the second condenser (31) are arranged in forebay (7)；Nature refrigeration modes, summer and conditioning in Transition Season is used second vaporizer (32) winter to use mechanical refrigeration mode；First refrigeration compressor (11), the second trachea (17), the first vaporizer (14), the first expansion valve (13), the first liquid pipe (16), the first condenser (12) and the first trachea (15) are sequentially connected in series；Described the first vaporizer (14), chilled water return pipe (26), subsidiary engine component cooling water system (23), chilled water feed pipe (27), pump group (9) and water filter (22) are sequentially connected in series；It has cycling use of water, step water, the advantage of multi-purpose water relative to prior art.
Description
Technical field
This utility model relates to once-through cooling water system, is more specifically a kind of thermal power station tail water retracting device.
Background technology
Thermal power station's factory site design attitude is higher, more than a century checks the floods position.
The thermal power station using single flow cooling water system is positioned at the area that south water resource is abundant, relatively near away from water head site, its
The warm water discharge water surface of discharge outlet P=97% low water level annual with water head site (river, river, reservoir etc.) flushes.Thermal power station reclaims circulation
Water draining (tail water) head has advantageous advantage.
For improving Ji benefit, the thermal power station of current domestic employing single flow cooling water system is in the profit of recirculated water draining drop
Use generally by arranging hydrogenerator to realize energy-conservation purpose, and by water wheels machine driving generator, then through becoming, joining
The electric power of generation is used for station service electrical system by electricity equipment.Following table is part thermal power station hydrogenerator kludge situation.
Power plant auxiliary machine component cooling water system generally has open system and closed system, and cooling water source is all from industrial cycle
Water, cools down for room temperature surface water.Industrial circulating water circulating pump head need to include suction head, therefore pump power is relatively big, and its
Flow is huge, and the design heat exchange area of each joined cooler of subsidiary engine component cooling water system is corresponding the biggest.It addition, open type subsidiary engine
Cooling water system water quality is poor, can only be to some subsidiary engine equipment less demanding to cooling water quality, such as oil cooler, vacuum pump etc.
Cool down, cooling water quality required higher subsidiary engine equipment, then need to arrange closed type hot exchanger carry out cooling water system every
Absolutely, enclosed subsidiary engine cooling water system water quality is preferable, but thus can produce heat exchange difference, final reduction system heat exchange efficiency, from
Invest and the most uneconomical from the point of view of operational efficiency.
As a example by certain power plant, according to pure condensate in summer operating mode full factory water balance figure, subsidiary engine cooling needs to use water 3500t/h, as
All subsidiary engine component cooling water temperature difference averagely by 8 DEG C of calculating, then need the cooling capacity of 32564kW.As by this part open type room temperature
Cooling water changes enclosed chilled water into and carries out subsidiary engine equipment cooling, calculates by water source heat pump units COP ≌ 6, according to upper table, whole water
Source heat pump is exerted oneself: (1250 × 4) × 6=30000kW, and cooling range then can bring up to more than 30 DEG C, cooling water circulation stream
Amount only needs original 1/3, and also according to upper table, draught head, as by tail water head, is averaged 10m and calculates, and water pump is raised
Journey can reduce 10m, and therefore, pump power can reduce (200 × 3-75 × 3)=375kW.By thermal power plant's whole year operation hourage
Calculate for 5000h, operating cost 5000 × 375 × 0.4 ÷ 10000=75 (ten thousand yuan) can be saved the whole year.With former hydrogenerator
Scheme is compared, and the economic benefit of generation is the most considerable；Also can avoid tying up thermal power station's electricity volume, relatively increase thermal power station's warp
Ji benefit.
Summary of the invention
The purpose of this utility model is to overcome the weak point of above-mentioned background technology, and proposes a kind of thermal power station tail water and return
Receiving apparatus.
This utility model one thermal power station tail water retracting device, it is characterised in that: it is provided with in the exit of forebay
Hydraulic energy recuperation culvert, is provided with the hydraulic turbine, at described forebay between described hydraulic energy recuperation culvert and tail water culvert pipe
Outlet is provided with filter screen, and connects with described hydraulic energy recuperation culvert, is provided with butterfly on described hydraulic energy recuperation culvert
Valve, described tail water culvert pipe afterbody is inserted in water head site, and the rear of the described hydraulic turbine is provided with arrangements for speed regulation, described
Arrangements for speed regulation rear is provided with the first refrigeration compressor, the quantity of the first described refrigeration compressor and the number of the described hydraulic turbine
Amount matches；
Described the first refrigeration compressor, the second trachea, the first vaporizer, the first expansion valve, the first liquid pipe, the first condensation
Device and the first trachea form a mechanical refrigeration loop I；
Described the second refrigeration compressor, the 5th trachea, the 3rd trachea, the second condenser, the second liquid pipe, second expand
Valve, the second vaporizer, the 6th trachea are sequentially connected in series one mechanical refrigeration loop II of formation；
Described the second condenser, the second liquid pipe, the second vaporizer, the 4th trachea, the 3rd trachea are sequentially connected in series formation one
Individual natural refrigerating circuit III；
Described the first vaporizer, chilled water return pipe, subsidiary engine component cooling water system, chilled water feed pipe, pump group and
Water filter forms an enclosed chilled water circuit IV；
Described condenser, condenser are positioned at described forebay top, and are submerged in water.Described condenser,
Condenser is by recirculated water draining natural cooling.
Valve, chilled water pump, check-valves, valve are in turn connected to form circuit V, and multiple described circuits V are in parallel to be formed
Pump group.
First electric butterfly valve, the second electric butterfly valve lay respectively on the described outlet pipe of the second vaporizer, water inlet pipe；Institute
The 3rd butterfly valve stated is positioned on described chilled water return pipe, and in the described outlet pipe of the second vaporizer, water inlet pipe and institute
The centre of the chilled water return pipe junction point stated.
The second described expansion valve and the first electromagnetic valve are connected and in parallel with the second described electromagnetic valve.
The 3rd described electromagnetic valve is positioned on the 4th described trachea；4th electromagnetic valve is positioned on the 5th described trachea；
The 5th described electromagnetic valve is positioned on the 6th described trachea.
This utility model has following technological merit: 1, drive refrigeration compressor by the hydraulic turbine, it is not necessary to electromotor, refrigeration
Compressor electric motor, simplified system, and accomplish cycling use of water, step water, multi-purpose water, make water resource be comprehensively utilized, carry
High power station water affairs management level.2, this device runs with power station host synchronization, cold by changing open cooling water system into enclosed
But water system and change power plant auxiliary machine equipment room temperature surface water cooling water source in prior art into chilled water cooling water source, subtracts significantly
Few required cooling water inflow and water circulating pump power, and improve cooling water quality, thus optimize the cooling of subsidiary engine component cooling water system
Mode and raising cooling effectiveness, reduce investment outlay and operating cost, have a extensive future.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: the hydraulic turbine 1, butterfly valve 2, hydraulic energy recuperation culvert 3, filter screen 4, tail water culvert pipe 5, water head site 6, forebay 7, tune
Speed variator 8, pump group the 9, first refrigeration compressor the 11, first condenser the 12, first expansion valve the 13, first vaporizer the 14, first gas
Pipe the 15, first liquid pipe the 16, second trachea 17, chilled water pump 21, water filter 22, subsidiary engine component cooling water system 23, check-valves
24, valve 25, chilled water return pipe 26, chilled water feed pipe 27, outlet pipe 28, water inlet pipe the 29, second condenser 31, second steam
Generate device the 32, second liquid pipe the 33, the 3rd trachea the 34, the 4th trachea the 35, first electric butterfly valve the 36, second electric butterfly valve the 37, the 3rd electricity
Dynamic butterfly valve the 38, second refrigeration compressor the 41, second expansion valve the 42, first electromagnetic valve the 43, second electromagnetic valve the 44, the 3rd electromagnetic valve
45, the 4th electromagnetic valve the 46, the 5th electromagnetic valve the 47, the 5th trachea the 48, the 6th trachea 49.
Detailed description of the invention
Describe performance of the present utility model below in conjunction with the accompanying drawings in detail, but they are not intended that of the present utility model
Limit, the most for example, simultaneously by illustrating that advantage of the present utility model will become clearer from easy to understand.
With reference to shown in Fig. 1: a kind of thermal power station tail water retracting device, it is characterised in that: arrange in the exit of forebay 7
There is hydraulic energy recuperation culvert 3, between described hydraulic energy recuperation culvert 3 and tail water culvert pipe 5, be provided with the hydraulic turbine 1, in described pressure
Power forebay 7 outlet is provided with filter screen 4, and connects with described hydraulic energy recuperation culvert 3, at described hydraulic energy recuperation culvert 3
On be provided with butterfly valve 2, described tail water culvert pipe 5 afterbody is inserted in water head site 6, is provided with at the rear of the described hydraulic turbine 1
Arrangements for speed regulation 8, described arrangements for speed regulation 8 rear is provided with the first refrigeration compressor 11, the first described refrigeration compressor 11
Quantity matches with the quantity of the described hydraulic turbine 1；
First described refrigeration compressor the 11, second trachea the 17, first vaporizer the 14, first expansion valve the 13, first liquid pipe
16, the first condenser 12 and the first trachea 15 form a mechanical refrigeration loop I；
Described second refrigeration compressor the 41, the 5th trachea the 48, the 3rd trachea the 34, second condenser the 31, second liquid pipe 33,
Second expansion valve the 42, second vaporizer the 32, the 6th trachea 49 is sequentially connected in series one mechanical refrigeration loop II of formation；
Second described condenser the 31, second liquid pipe the 33, second vaporizer the 32, the 4th trachea the 35, the 3rd trachea 34 is successively
Series connection forms a natural refrigerating circuit III；
Described the first vaporizer 14, chilled water return pipe 26, subsidiary engine component cooling water system 23, chilled water feed pipe
27, pump group 9 and water filter 22 form an enclosed chilled water circuit IV；
Described condenser 12, condenser 31 are positioned at described forebay 7 top, and are submerged in water.Described is cold
Condenser 12, condenser 31 are by recirculated water draining natural cooling.
Valve 25, chilled water pump 21, check-valves 24, valve 25 are in turn connected to form circuit V, multiple described circuits V
Formation pump group 9 in parallel.
First electric butterfly valve the 36, second electric butterfly valve 37 lays respectively at the outlet pipe 28 of the second described vaporizer 32, enters
On water pipe 29；The 3rd described butterfly valve 38 is positioned on described chilled water return pipe 26, and at the second described vaporizer 32
Outlet pipe 28, water inlet pipe 29 and the centre of described chilled water return pipe 26 junction point.
The second described expansion valve 42 is connected with the first electromagnetic valve 43 and in parallel with the second described electromagnetic valve 44.
The 3rd described electromagnetic valve 45 is positioned on the 4th described trachea 35；4th electromagnetic valve 46 is positioned at the 5th described gas
On pipe 48；The 5th described electromagnetic valve 47 is positioned on the 6th described trachea 49.
This utility model also includes the Application way of a kind of thermal power station tail water retracting device, it is characterised in that: it include as
Lower step；
1., the high-temperature high-pressure refrigerant gas that described first refrigeration compressor 11 is discharged enters described by the first trachea 15
The inner condensation heat release of first condenser 12, cold-producing medium becomes high temperature high pressure liquid, enters the first expansion by described first liquid pipe 16
After valve 13 is throttled decompression, evaporation endothermic in described first vaporizer 14, will enter from described chilled water return pipe 26 simultaneously
Water in first vaporizer 14 cools down, and cold-producing medium becomes low temperature low pressure gas, by the second trachea 17 again by described
First refrigeration compressor 11 sucks；
2., when when summer and transition season carrying out kind of refrigeration cycle；Close the second electromagnetic valve the 44, the 3rd electromagnetic valve 45, beat
Open the first electromagnetic valve the 43, the 4th electromagnetic valve the 46, the 5th electromagnetic valve 47, the High Temperature High Pressure that the second described refrigeration compressor 41 is discharged
Refrigerant gas enters described the second condenser 31 inner condensation heat release by the 5th trachea the 48, the 3rd trachea 34, and cold-producing medium becomes
Become high temperature high pressure liquid, enter after the second expansion valve 42 is throttled decompression by the second described liquid pipe 33, steam described second
Send out the inner evaporation endothermic of device 32, the water entered in the second vaporizer 32 from described chilled water return pipe 26 is cooled down simultaneously, system
Cryogen becomes low temperature low pressure gas, is again sucked by the second described refrigeration compressor 41 by the 6th trachea 49；
3., when carrying out kind of refrigeration cycle in the winter time, the first electromagnetic valve the 43, the 4th electromagnetic valve the 46, the 5th electromagnetic valve 47 is closed,
Opening the second electromagnetic valve the 44, the 3rd electromagnetic valve 45, refrigerant gas enters institute by the 4th described trachea the 35, the 3rd trachea 34
The the second condenser 31 inner condensation heat release stated, cold-producing medium becomes liquid, enters described second by the second described liquid pipe 33
The inner evaporation endothermic of vaporizer 32, cools down the water entered in the second vaporizer 32 from described chilled water return pipe 26 simultaneously,
Cold-producing medium becomes gas again, completes a natural kind of refrigeration cycle.
Step 2. in, along with tail water drop and subsidiary engine equipment cooling situation, the second described refrigeration compressor 41 is made
Use for regulating units.When described second refrigeration compressor 41 works, close the 3rd electric butterfly valve 38, open the first electronic butterfly
Valve 36 and the second electric butterfly valve 37；When the second described refrigeration compressor 41 does not works, close the first electric butterfly valve 36, second
Electric butterfly valve 37, opens the 3rd electric butterfly valve 38.
Step 3. in, close the 3rd electric butterfly valve 38, open first electric butterfly valve the 36, second electric butterfly valve 37, pass through
Second vaporizer 32 first carries out pre-cooling to the water in chilled water return pipe 26 and chilled water feed pipe 27, to reduce freezing further
Water pump 21 winter operation number of units and chilled water quantity of circulating water.
Described chilled water pump 21 uses VFC.
It is provided with valve 25 at described chilled water pump 21, the entery and delivery port of water filter 22；Described chilled water pump 21
Water outlet be additionally provided with check-valves 24.
The described hydraulic turbine 1, arrangements for speed regulation the 8, first refrigeration compressor the 11, second refrigeration compressor the 41, first vaporizer 14,
Second vaporizer the 32, first expansion valve the 13, second expansion valve 42, pump group 9, water filter the 22, first electric butterfly valve the 36, second electricity
Dynamic butterfly valve the 37, the 3rd electric butterfly valve the 38, first electromagnetic valve the 43, second electromagnetic valve the 44, the 3rd electromagnetic valve the 45, the 4th electromagnetic valve 46,
5th electromagnetic valve 47 equal centralized arrangement such as grade is in main building.
Described power plant tail water retracting device uses intelligentized control method.
This utility model is not limited to above-mentioned preferred forms, and anyone can draw under enlightenment of the present utility model
Other various forms of products, no matter but in its shape or structure, make any change, every have same as the present application or phase
The technical scheme of approximation, within all falling within protection domain of the present utility model.
Claims (5)
1. thermal power station's tail water retracting device, it is characterised in that: it is provided with hydraulic energy recuperation in the exit of forebay (7) and contains
Hole (3), is provided with the hydraulic turbine (1), before described pressure between described hydraulic energy recuperation culvert (3) and tail water culvert pipe (5)
Pond (7) outlet is provided with filter screen (4), and connects with described hydraulic energy recuperation culvert (3), at described hydraulic energy recuperation culvert
(3) being provided with butterfly valve (2) on, described tail water culvert pipe (5) afterbody is inserted in water head site (6), at the described hydraulic turbine (1)
Rear is provided with arrangements for speed regulation 8, and described arrangements for speed regulation (8) rear is provided with the first refrigeration compressor (11), described first
The quantity of refrigeration compressor (11) matches with the quantity of the described hydraulic turbine (1)；
Described the first refrigeration compressor (11), the second trachea (17), the first vaporizer (14), the first expansion valve (13), first
Liquid pipe (16), the first condenser (12) and the first trachea (15) form a mechanical refrigeration loop I；
Described the second refrigeration compressor (41), the 5th trachea (48), the 3rd trachea (34), the second condenser (31), the second liquid
Pipe (33), the second expansion valve (42), the second vaporizer (32), the 6th trachea (49) are sequentially connected in series one mechanical refrigeration loop of formation
II；
Described the second condenser (31), the second liquid pipe (33), the second vaporizer (32), the 4th trachea (35), the 3rd trachea
(34) one natural refrigerating circuit III of formation it is sequentially connected in series；
Described the first vaporizer (14), chilled water return pipe (26), subsidiary engine component cooling water device (23), chilled water feed pipe
(27), pump group (9) and water filter (22) form an enclosed chilled water circuit IV；
Described condenser (12), condenser (31) are positioned at described forebay (7) top, and are submerged in water.
A kind of thermal power station the most according to claim 1 tail water retracting device, it is characterised in that: valve (25), chilled water pump
(21), check-valves (24), valve (25) are in turn connected to form circuit V, multiple described circuits V formation in parallel pump group (9).
A kind of thermal power station the most according to claim 1 and 2 tail water retracting device, it is characterised in that: the first electric butterfly valve
(36), the second electric butterfly valve (37) lays respectively on the outlet pipe (28) of described the second vaporizer (32), water inlet pipe (29)；Institute
The 3rd butterfly valve (38) stated is positioned on described chilled water return pipe (26), and at the outlet pipe of described the second vaporizer (32)
(28), water inlet pipe (29) and the centre of described chilled water return pipe (26) junction point.
A kind of thermal power station the most according to claim 3 tail water retracting device, it is characterised in that: the second described expansion valve
(42) connect with the first electromagnetic valve (43) and in parallel with described the second electromagnetic valve (44).
A kind of thermal power station the most according to claim 4 tail water retracting device, it is characterised in that: the 3rd described electromagnetic valve
(45) it is positioned on the 4th described trachea (35)；4th electromagnetic valve (46) is positioned on the 5th described trachea (48)；Described
Five electromagnetic valves (47) are positioned on the 6th described trachea (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741375.8U CN205805818U (en) | 2016-07-14 | 2016-07-14 | A kind of thermal power station tail water retracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741375.8U CN205805818U (en) | 2016-07-14 | 2016-07-14 | A kind of thermal power station tail water retracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805818U true CN205805818U (en) | 2016-12-14 |
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ID=57511135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620741375.8U Withdrawn - After Issue CN205805818U (en) | 2016-07-14 | 2016-07-14 | A kind of thermal power station tail water retracting device |
Country Status (1)
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| CN (1) | CN205805818U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052174A (en) * | 2016-07-14 | 2016-10-26 | 中国电力工程顾问集团中南电力设计院有限公司 | Recycling device for thermal power station tail water and utilizing method |
| CN107781096A (en) * | 2017-08-11 | 2018-03-09 | 魏方潇 | Water wheels, generating, heat pump all-in-one |
| CN108448821A (en) * | 2018-04-27 | 2018-08-24 | 杭州力源发电设备有限公司 | A kind of hydrogenerator cooling water inflow control system and its control method |
| CN108862418A (en) * | 2018-07-10 | 2018-11-23 | 贵州大学 | A kind of thermal power station's tail water recyclable device |
| CN110080926A (en) * | 2019-05-05 | 2019-08-02 | 黄河勘测规划设计研究院有限公司 | Increase the impulse water wheel unit structure of productive head |
| CN108448821B (en) * | 2018-04-27 | 2024-05-24 | 杭州力源发电设备有限公司 | Hydraulic generator cooling water quantity control system and control method thereof |
-
2016
- 2016-07-14 CN CN201620741375.8U patent/CN205805818U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052174A (en) * | 2016-07-14 | 2016-10-26 | 中国电力工程顾问集团中南电力设计院有限公司 | Recycling device for thermal power station tail water and utilizing method |
| CN106052174B (en) * | 2016-07-14 | 2018-09-25 | 中国电力工程顾问集团中南电力设计院有限公司 | A kind of thermal power station's tail water retracting device and utilize method |
| CN107781096A (en) * | 2017-08-11 | 2018-03-09 | 魏方潇 | Water wheels, generating, heat pump all-in-one |
| CN108448821A (en) * | 2018-04-27 | 2018-08-24 | 杭州力源发电设备有限公司 | A kind of hydrogenerator cooling water inflow control system and its control method |
| CN108448821B (en) * | 2018-04-27 | 2024-05-24 | 杭州力源发电设备有限公司 | Hydraulic generator cooling water quantity control system and control method thereof |
| CN108862418A (en) * | 2018-07-10 | 2018-11-23 | 贵州大学 | A kind of thermal power station's tail water recyclable device |
| CN110080926A (en) * | 2019-05-05 | 2019-08-02 | 黄河勘测规划设计研究院有限公司 | Increase the impulse water wheel unit structure of productive head |
| CN110080926B (en) * | 2019-05-05 | 2024-05-07 | 黄河勘测规划设计研究院有限公司 | Impact type turbine set structure for increasing power generation water head |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20180925 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20180925 |