CN106477693B - Thermal power plant sea water desalination water intake system and its control method - Google Patents
Thermal power plant sea water desalination water intake system and its control method Download PDFInfo
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- CN106477693B CN106477693B CN201611114211.3A CN201611114211A CN106477693B CN 106477693 B CN106477693 B CN 106477693B CN 201611114211 A CN201611114211 A CN 201611114211A CN 106477693 B CN106477693 B CN 106477693B
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- intaking
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of thermal power plant sea water desalination water intake system and its control methods, system includes water pump, water intaking main pipe and water intaking branch pipe, the water intaking main pipe includes multiple input ports and multiple delivery outlets, the input port for main pipe of fetching water is connected with the delivery outlet of several water intaking branch pipes, the input port of each water intaking branch pipe is connected with a circulating pump discharge pipe respectively, and the inlet valve for controlling water intaking on-off is equipped on each water intaking branch pipe；The delivery outlet of water intaking main pipe is connected with several water pumps, and seawater is transported to rear end seawater desalinization pretreatment system by water pump；The inlet valve and water pump are controlled by a controller.Sea water desalination water intake system, recirculated water medicine system, the interlocked control of water circulating pump may be implemented in the present invention, and without individually construction water plant, configurating filtered equipment, flexible operation is convenient.
Description
Technical field
The present invention relates to thermal power plant sea water desalination research field, in particular to a kind of thermal power plant sea water desalination takes
Water system and its control method.
Background technique
Coastal area scarcity of fresh water resources, more and more thermal power plants start using the seawater after desalination as power plant
Industrial water, the seawater after obtaining desalination are needed using sea water desalination processing unit, in the input of sea water desalination processing unit
Mouth needs to be arranged special seawater taking system and provides fresh seawater for it.
Currently, seawater taking system mainly includes two schemes:
One, independent sea water desalination water plant is set
For the water of using for guaranteeing seawater desalination system, the program is sea by the way that special sea water desalination water plant 1-1 is arranged
Water desalt processing device provides fresh seawater.It is generally pumped with circulating cooling water of power plant referring to Fig. 1, sea water desalination water plant 1-1
Room 1-2 combines arrangement, fetches water from circulating pump room forebay 1-3, is then sent to seawater desalinization pretreatment device.
But there is following disadvantages for the program:
1) water plant need to be separately provided, civilwork engineering quantity is big, and construction investment is high；
2) equipment such as steel-slag sand, trash rack, rotary sieve need to be configured, construction investment is high；
3) fungicide can not be added to water intaking setting, sea organism attachment is serious, influences system safety operation.
Two, sea water desalination water pump 2-1 uses long shaft submerged pump, and water pump 2-1 is mounted on circulating pump room 2-2 operation
Layer, fetches water, structure is referring to fig. 2 out of circulating pump room runner 2-3.
But there is following disadvantages for the program:
1) because flood control requires, circulating pump room firing floor absolute altitude is higher, when being fetched water using long shaft submerged pump, water pump distance
Farther out, and suction hose caliber is smaller for the water surface, easily causes water pump vibration, and then water pump is caused to damage；
2) sea water desalination water intaking water pump suction pipe is mounted in circulating pump room runner, water flow disorder in Yi Yinqi runner, into
And influence water circulating pump efficient operation；
3) circulation needs to be arranged recirculated water medicine system, to add oxidizing bactericide and non-oxydizing sterilization
Agent need to be eliminated the effects of the act since fungicide will affect seawater desalination system operation by frequent start-stop pump, be easy reduction water pump
Service life.
4) long shaft submerged pump efficiency is lower, is unfavorable for energy conservation.
5) runner turn(a)round, corresponding sea water desalination water pump need out of service.
For this purpose, efficient operation of fetching water can be guaranteed by studying one kind, and avoid influence of the fungicide to seawater desalination system
Sea water desalination water intake system has important research significance.
Summary of the invention
The shortcomings that it is an object of the present invention to overcome the prior art and deficiency, it is light to provide a kind of thermal power plant seawater
Change water intake system, system run all right safety, energy conservation, and civil engineering investment is less.
It is another object of the present invention to provide a kind of controls based on above-mentioned thermal power plant sea water desalination water intake system
Water intaking, dosing, water circulating pump interlocked control may be implemented in method processed, this method, improves the working efficiency and stability of system.
The purpose of the present invention is realized by the following technical solution: thermal power plant sea water desalination water intake system, including is taken
Water pump, water intaking main pipe and water intaking branch pipe, the water intaking main pipe includes multiple input ports and multiple delivery outlets, the input for main pipe of fetching water
Mouthful with several water intaking branch pipes delivery outlets be connected, it is each fetch water branch pipe input port respectively with a circulating pump discharge pipe phase
Even, the inlet valve for controlling water intaking on-off is equipped on each water intaking branch pipe；Fetch water main pipe delivery outlet with several
Water pump is connected, and seawater is transported to rear end seawater desalinization pretreatment system by water pump；The inlet valve and water pump by
The control of one controller.
Preferably, the Adding medicine control valve of recirculated water medicine system is separately positioned on each water circulating pump rear end runner
On, the controller is separately connected with above-mentioned Adding medicine control valve.So as to realize the interlocked control of water intaking and dosing, guarantee
Fungicide does not influence the normal operation of sea water desalination.
Preferably, the controller is connected with the driving motor of each water circulating pump.So as to realize linkage.
Preferably, an electrically operated valve and a manually-operated gate are set simultaneously on each water intaking branch pipe, it is described electronic
Valve is connected by data line with controller.It thereby may be ensured that the reliability of system.
Preferably, a manually-operated gate and a contact valve, the contact valve and control are respectively provided with after each water pump
Device processed is connected.So as to either automatically or manually be closed, do not influence system water supply when separate unit fetches water failure of pump.
Preferably, the water pump uses centrifugal pump of horizontal axis.This pump efficiency is higher, and outdoor can be arranged in recirculated water
On vacant lot after pump house, it is not necessary to additional reserved space.
It further, include several centrifugal pump of horizontal axis in the sea water desalination water intake system, wherein at least 1 is in
Stand-by state.So as to still ensure that normal work when a certain water pump breaks down.
A kind of control method based on above-mentioned thermal power plant sea water desalination water intake system, comprising steps of
The opening and closing of valve is got in touch with after inlet valve open and-shut mode and water pump that controller is arranged on each water intaking branch pipe
State is then turned on corresponding water pump；
Seawater successively after circulating pump discharge pipe, water intaking branch pipe, water intaking main pipe, enters under water circulating pump driving
The seawater desalinization pretreatment system of rear end.
Preferably, stream where the fungicide in the controller control loop water medicine system is added to water circulating pump by platform
Road, method are: the corresponding inlet valve fetched water on branch pipe of corresponding runner, sea water desalination water intaking system are closed before adding fungicide
System is supplied water by other water intaking branch pipes, and the Adding medicine control valve of runner carries out dosing where opening；It completes to start in dosing several
After a hour, the above-mentioned inlet valve being turned off is opened；Then adding for next runner is carried out；It is successively complete by the above method
At the dispensing of each runner fungicide.
Preferably, it when the controller drives the driving motor of a certain water circulating pump to start, while interlocking opening and accordingly taking
Inlet valve on water branch pipe, when driving above-mentioned driving motor to stop transport, while interlocking close is accordingly fetched water the water inlet on branch pipe
Valve.To realize water intaking branch pipe on inlet valve and water circulating pump interlocked control, avoid sea water desalination water intake system with
It needs the water circulating pump of dosing concatenated accident occur to occur.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1, the present invention is not necessarily to individually construction water pump by using the tubular type bindiny mechanism of water intaking main pipe and branch pipe of fetching water
Room, configurating filtered equipment, have many advantages, such as to reduce investment outlay, run it is convenient.
2, in the present invention, by the automatic adjustment to Adding medicine control valve and inlet valve, water intaking and dosing may be implemented
Interlocked control, guarantee that fungicide does not influence the normal operation of sea water desalination, improve the service life of water pump.
3, water pump uses centrifugal pump of horizontal axis in the present invention, and this pump efficiency is higher, is beneficial to energy conservation.
4, each channel of the present invention is individually controlled by valve, so flexible operation, not by separate unit circulating water pump maintenance, stops
Fortune influences.
Detailed description of the invention
Fig. 1 is sea water desalination water plant layout drawing in the prior art.
Fig. 2 is sea water desalination water pump arrangement schematic diagram in the prior art
Fig. 3 is the annexation figure of sea water desalination water intake system described in the present embodiment.
Fig. 4 is the arrangement schematic diagram of sea water desalination water intake system described in the present embodiment.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment 1
As shown in Figure 3,4, the present embodiment thermal power plant sea water desalination water intake system, including water pump 4, water intaking main pipe 3
With water intaking branch pipe 1, water intaking main pipe 3 includes 4 input ports and 3 delivery outlets, input port and the 4 water intaking branch pipes of main pipe 3 of fetching water
Delivery outlet be connected, it is each water intaking branch pipe 1 input port be connected respectively with a circulating pump discharge pipe, fetch water main pipe 3 it is defeated
Outlet is connected with 3 water pumps, and seawater is transported to rear end seawater desalinization pretreatment system by water pump 4.
In the present embodiment, sea water desalination water intake system includes a controller, is equipped on each water intaking branch pipe for controlling
The inlet valve 2 of water on-off is produced, inlet valve here can be only electrically operated valve, and a motor-driven valve can also be arranged simultaneously
Door and a manually-operated gate, such electrically operated valve is connected with controller by data line, is controlled by controller, and manually-operated gate is
It is used when emergency or controller etc. break down, therefore has more reliability.
Meanwhile the Adding medicine control valve of recirculated water medicine system is separately positioned on each water circulating pump rear end runner,
Each water pump, Adding medicine control valve are controlled by above controller.A manually-operated gate and one are respectively provided with after each water pump
Network valve, the contact valve are connected with controller.
In addition, the linkage in order to realize water inlet, controller can also be connected with the driving motor of each water circulating pump.
In the present embodiment, water pump uses centrifugal pump of horizontal axis, and 3 centrifugal pump of horizontal axis are arranged in system altogether, and 2 operations 1 are standby
The method of operation.3 sea water desalination water pumps share 1 water intaking main pipe, and water intaking main pipe is from being arranged in water circulating pump hydraulic control butterfly
Water intaking branch pipe water intaking after valve.
Control method of the present embodiment based on above-mentioned thermal power plant sea water desalination water intake system, comprising steps of controller
The open and-shut mode that valve is got in touch with after the inlet valve open and-shut mode and water pump that are arranged on each water intaking branch pipe, is then turned on phase
The water pump answered；Seawater is under water circulating pump driving, successively after circulating pump discharge pipe, water intaking branch pipe, water intaking main pipe, into
Enter the seawater desalinization pretreatment system of rear end.
Meanwhile the fungicide in the controller control loop water medicine system is added to where water circulating pump by platform and flows
Road, method are: the corresponding inlet valve fetched water on branch pipe of corresponding runner, sea water desalination water intaking system are closed before adding fungicide
System is supplied water by other water intaking branch pipes, and the Adding medicine control valve of runner carries out dosing where opening；It completes to start in dosing several
After a hour, the above-mentioned inlet valve being turned off is opened；Then adding for next runner is carried out；It is successively complete by the above method
At the dispensing of each runner fungicide.
In addition, when the controller drives the driving motor of a certain water circulating pump to start, while interlocking the corresponding water intaking of opening
Inlet valve on branch pipe, when driving above-mentioned driving motor to stop transport, while interlocking close is accordingly fetched water the inlet valve on branch pipe
Door.To realizing the interlocked control of inlet valve and water circulating pump on water intaking branch pipe, avoiding sea water desalination water intake system and needing
It wants the water circulating pump of dosing concatenated accident occur to occur.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. thermal power plant sea water desalination water intake system, which is characterized in that including water pump, water intaking main pipe and water intaking branch pipe, institute
Stating water intaking main pipe includes multiple input ports and multiple delivery outlets, the delivery outlet of the input port for main pipe of fetching water and several water intaking branch pipes
It is connected, the input port of each water intaking branch pipe is connected with a circulating pump discharge pipe respectively, is equipped on each water intaking branch pipe
For controlling the inlet valve of water intaking on-off；The delivery outlet of water intaking main pipe is connected with several water pumps, and water pump is defeated by seawater
It is sent to rear end seawater desalinization pretreatment system；The inlet valve and water pump are controlled by a controller；
The Adding medicine control valve of recirculated water medicine system is separately positioned on each water circulating pump rear end runner, the controller
It is separately connected with above-mentioned Adding medicine control valve；
Runner where fungicide in the controller control loop water medicine system is added to water circulating pump by platform, method is:
The corresponding inlet valve fetched water on branch pipe of corresponding runner is closed before adding fungicide, sea water desalination water intake system passes through other
Branch pipe of fetching water supplies water, and the Adding medicine control valve of runner carries out dosing where opening；After dosing is completed to start several hours, open
Open the above-mentioned inlet valve being turned off；Then adding for next runner is carried out；Each runner is sequentially completed by the above method
The dispensing of fungicide.
2. sea water desalination water intake system in thermal power plant according to claim 1, which is characterized in that the controller and each
The driving motor of a water circulating pump is connected.
3. sea water desalination water intake system in thermal power plant according to claim 1, which is characterized in that each water intaking branch
One electrically operated valve and a manually-operated gate are set simultaneously on pipe, and the electrically operated valve is connected by data line with controller.
4. sea water desalination water intake system in thermal power plant according to claim 1, which is characterized in that each water pump
After be respectively provided with a manually-operated gate and a contact valve, the contact valve is connected with controller.
5. sea water desalination water intake system in thermal power plant according to claim 1, which is characterized in that the water pump uses
Centrifugal pump of horizontal axis.
6. sea water desalination water intake system in thermal power plant according to claim 5, which is characterized in that the sea water desalination takes
It include several centrifugal pump of horizontal axis in water system, wherein at least 1 is in stand-by state.
7. a kind of control method based on sea water desalination water intake system in thermal power plant described in any one of claims 1-6,
It is characterized in that, comprising steps of
The open and-shut mode of valve is got in touch with after inlet valve open and-shut mode and water pump that controller is arranged on each water intaking branch pipe,
It is then turned on corresponding water pump；
Seawater is under water circulating pump driving, successively after circulating pump discharge pipe, water intaking branch pipe, water intaking main pipe, into rear end
Seawater desalinization pretreatment system.
8. control method according to claim 7, which is characterized in that in the controller control loop water medicine system
Fungicide is added to runner where water circulating pump by platform, and method is: the corresponding water intaking of corresponding runner is closed before adding fungicide
Inlet valve on branch pipe, sea water desalination water intake system are supplied water by other water intaking branch pipes, the Adding medicine control of runner where opening
Valve carries out dosing；After dosing is completed to start several hours, the above-mentioned inlet valve being turned off is opened；Then it carries out next
A runner adds；The dispensing of each runner fungicide is sequentially completed by the above method.
9. control method according to claim 7, which is characterized in that the controller drives the driving of a certain water circulating pump
When electric motor starting, while the inlet valve opened on corresponding water intaking branch pipe is interlocked, when driving above-mentioned driving motor to stop transport, simultaneously
Interlocking close is accordingly fetched water the inlet valve on branch pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611114211.3A CN106477693B (en) | 2016-12-07 | 2016-12-07 | Thermal power plant sea water desalination water intake system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611114211.3A CN106477693B (en) | 2016-12-07 | 2016-12-07 | Thermal power plant sea water desalination water intake system and its control method |
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| CN106477693B true CN106477693B (en) | 2019-07-30 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107861380A (en) * | 2017-11-07 | 2018-03-30 | 北京金控数据技术股份有限公司 | Flow control methods, device, equipment and storage medium in desalting process |
| CN113149250B (en) * | 2021-03-11 | 2023-09-05 | 天津国投津能发电有限公司 | Seawater biological control system and control method for front pool runner of seawater taking pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253954A (en) * | 1992-07-14 | 1993-10-19 | Cornell Research Foundation, Inc. | Alternate intake pipe system to eliminate zebra mussel colonization |
| CN202576053U (en) * | 2012-04-01 | 2012-12-05 | 烟台洁通水处理技术有限公司 | Seawater electrolysis antifouling device for large seawater cooling system |
| CN103696460A (en) * | 2013-12-06 | 2014-04-02 | 杭州良益水电安装有限公司 | Oblique-casing water intake method and device |
| CN204059462U (en) * | 2014-08-26 | 2014-12-31 | 中国建筑第八工程局有限公司 | Water source water intake system |
-
2016
- 2016-12-07 CN CN201611114211.3A patent/CN106477693B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253954A (en) * | 1992-07-14 | 1993-10-19 | Cornell Research Foundation, Inc. | Alternate intake pipe system to eliminate zebra mussel colonization |
| CN202576053U (en) * | 2012-04-01 | 2012-12-05 | 烟台洁通水处理技术有限公司 | Seawater electrolysis antifouling device for large seawater cooling system |
| CN103696460A (en) * | 2013-12-06 | 2014-04-02 | 杭州良益水电安装有限公司 | Oblique-casing water intake method and device |
| CN204059462U (en) * | 2014-08-26 | 2014-12-31 | 中国建筑第八工程局有限公司 | Water source water intake system |
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