CN208121871U - Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch - Google Patents
Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch Download PDFInfo
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- CN208121871U CN208121871U CN201820521736.7U CN201820521736U CN208121871U CN 208121871 U CN208121871 U CN 208121871U CN 201820521736 U CN201820521736 U CN 201820521736U CN 208121871 U CN208121871 U CN 208121871U
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- water
- switching valve
- electric switching
- water supply
- inlet manifold
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Abstract
The utility model discloses a kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant constructions of switch, including：Water main,The first electric switching valve on water main is set,Water inlet manifold for supplying water to power generation machine part,And the controller for controlling the opening and closing of the first electric switching valve,Water main is connect by the first electric switching valve with water inlet manifold,The water supply branch in parallel with the first electric switching valve is equipped between the water main and water inlet manifold,The water supply branch road is equipped with the second electric switching valve,The control terminal of second electric switching valve and the output port conducting wire of controller connect,Pressure-detecting device is equipped in the water inlet manifold inner cavity,The signal output end of pressure-detecting device and the input port conducting wire of controller connect,The utility model can guarantee unit under operation in normally-pressured neighbor of the technical water supply reliably uninterruptedly to supply and maintain permission,Guarantee turbine-generator units reliability of operation,Safety.
Description
Technical field
The utility model relates to a kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant constructions of switch, belong to hydroelectric power plant and control safely
Field processed.
Background technique
Technical water supply is also known as production water supply, and main object is various electromechanical running equipments, there is air cooler of generator, hair
Each guide bearing cooling of motor and lubrication etc.；Effect is cooled down to running equipment, is also used to be lubricated sometimes（Such as the hydraulic turbine
Rubber tile guide bearing）.
With the development and extensive use of hydroelectric power plant of China control system, establishing robust techniques water system is hydroelectric power plant
One of important topic, without preventing technical water supply general pipeline electric switching valve from smuggling program in original design, generator normal operating condition
If lower electric switching valve situations such as there are mechanical breakdowns, infiltration, it will lead to electric switching valve and smuggle and hydraulic pressure subnormal pressure
Value will be unable to meet each guide bearing of generating set, aerial cooler cooling and the cooling requirement of other electromechanical equipments, and then can cause
It is reliable for operation also to will seriously affect hydrogenerator under " remote control, few man on duty " mode for hydrogenerator non-programmed halt
Property.
Utility model content
The technical problems to be solved in the utility model is：A kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant switch knot is provided
Structure guarantees the reliability of technical water supply, with overcome the deficiencies in the prior art.
The technical solution of the utility model is：A kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch, including：For
Supply mains, the first electric switching valve being arranged on water main, the water inlet manifold for supplying water to power generation machine part, Yi Jiyong
In the controller for controlling the opening and closing of the first electric switching valve, water main is connect by the first electric switching valve with water inlet manifold,
The water supply branch in parallel with the first electric switching valve is equipped between the water main and water inlet manifold, the water supply branch road is set
There is the second electric switching valve, the control terminal of the second electric switching valve and the output port conducting wire of controller connect, in the water inlet
Pressure-detecting device is equipped in total tube cavity, the signal output end of pressure-detecting device and the input port conducting wire of controller connect
It connects.
The pressure-detecting device includes pressure switch and pressure transmitter.
The utility model has the beneficial effects that：The utility model passes through double in every generating set technical water supply general pipeline configuration
Redundancy electric switching valve is normal lower than preset when unit Programmable detection to technology water inlet manifold pressure in generator operation
When hydraulic pressure value, program, which will execute this section, prevents electric switching valve（First electric switching valve）Smuggle program, open another group it is spare
Electric switching valve（Second electric switching valve）Technology water inlet manifold water pressure is set to rise to normal hydraulic pressure value, reaching technical water supply can
By the purpose of property.The utility model can guarantee unit under operation technical water supply reliably uninterruptedly to supply and maintain fair
Perhaps in normally-pressured neighbor, guarantee turbine-generator units reliability of operation, safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the System Control Figure of the utility model；
Description of symbols：1, water main, 2, water inlet manifold, the 3, first electric switching valve, the 4, second electric switching valve,
5, pressure transmitter, 6, pressure switch, 7, water supply branch.
Specific embodiment
With reference to the accompanying drawing and utility model is described further in specific embodiment：
With reference to Fig. 1 and Fig. 2, according to a kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch of the utility model, packet
It includes：Water main 1, the first electric switching valve 3 being arranged on water main 1, the water inlet for supplying water to power generation machine part are total
Pipe 2, and the controller for controlling the opening and closing of the first electric switching valve 3, water main 1 by the first electric switching valve 3 with into
Supply mains 2 connects, and the above structure is the technical water supply structure in existing power plant, if the electric switching valve under operation state of generator
There are mechanical breakdown, infiltrations etc., and electric switching valve to be caused to be smuggled, and pressure of supply water is lower than 0.2MPa, will be unable to meet generating set each
Guide bearing, aerial cooler are cooling and the cooling of other electromechanical equipments requires, it will cause hydrogenerator water dispenser accidental shutdown,
It will seriously affect hydrogenerator operational reliability under " remote control, few man on duty " mode.
The water supply branch 7 in parallel with the first electric switching valve 3, the water supply are equipped between water main 1 and water inlet manifold 2
Second electric switching valve 4 is installed, the control terminal of the second electric switching valve 4 and the output port conducting wire of controller connect on branch 7
It connects, pressure-detecting device, the input of the signal output end and controller of pressure-detecting device is installed in 2 inner cavity of water inlet manifold
The connection of port conducting wire, when hydraulic pressure deficiency setting value in this way in water inlet manifold 2, controller controls the second electric switching valve 4 and opens
Dynamic, water supply branch 7 also supplies water at this time, so that the hydraulic pressure in water inlet manifold 2 rises to predetermined value, this kind of mode can be solved effectively
Electric switching valve is smuggled caused by the reasons such as there was a mechanical failure because of the first electric switching valve 3, infiltration, makes 2 internal pressure of water inlet manifold
Power is lower than normal value, thus the problem of causing generator water dispenser accidental shutdown.
Preferably, the pressure-detecting device includes pressure switch 6 and pressure transmitter 5, is detected due to pressure switch 6
It is discontinuous point value, and what pressure transmitter 5 detected is continuous point value, such pressure-detecting device can be detected more accurate
Hydraulic pressure value, improve the judgement reliability of controller.In practice, such as by pressure switch 6 and pressure transmitter 5 it is respectively provided with just
Ordinary water pressure is 0.2MPa, in real time send pressure signal to unit monitoring system local control device, if receiving machine in unit program
Group is in operating state signal（Locking is extracted and generating unit speed is not less than 0.2%）, 1 pressure of water main（Analog quantity）It is lower than
It is good that 0.2MPa and data acquire quality；1 pressure switch 6 of water main（Switching value）Issue hydraulic pressure spectral artifacts.Unit program
Comprehensive descision is that the electronic pass valve of technical water supply is smuggled, and opens another group of spare electric switching valve（That is the second electric switching valve 4）Make
Hydraulic pressure maintains in normal range hydraulic pressure.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (2)
1. a kind of large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch, including：Water main（1）, be arranged in water main
（1）On the first electric switching valve（3）, for power generation machine part supply water water inlet manifold（2）, and for controlling the first electricity
Dynamic switch valve（3）The controller of opening and closing, water main（1）Pass through the first electric switching valve（3）With water inlet manifold（2）Connection,
It is characterized in that：In the water main（1）With water inlet manifold（2）Between be equipped with and the first electric switching valve（3）Water supply in parallel
Branch（7）, the water supply branch（7）It is equipped with the second electric switching valve（4）, the second electric switching valve（4）Control terminal and control
The output port conducting wire of device processed connects, in the water inlet manifold（2）Pressure-detecting device is equipped in inner cavity, pressure-detecting device
The connection of the input port conducting wire of signal output end and controller.
2. large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch according to claim 1, it is characterised in that：The pressure
Force checking device includes pressure switch（6）And pressure transmitter（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521736.7U CN208121871U (en) | 2018-04-13 | 2018-04-13 | Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521736.7U CN208121871U (en) | 2018-04-13 | 2018-04-13 | Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208121871U true CN208121871U (en) | 2018-11-20 |
Family
ID=64191460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820521736.7U Active CN208121871U (en) | 2018-04-13 | 2018-04-13 | Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208121871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635926A (en) * | 2022-02-17 | 2022-06-17 | 贵州乌江水电开发有限责任公司 | Cooling protection device for hydropower station water turbine |
-
2018
- 2018-04-13 CN CN201820521736.7U patent/CN208121871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635926A (en) * | 2022-02-17 | 2022-06-17 | 贵州乌江水电开发有限责任公司 | Cooling protection device for hydropower station water turbine |
| CN114635926B (en) * | 2022-02-17 | 2023-09-22 | 贵州乌江水电开发有限责任公司 | Cooling protection device for hydropower station water turbine |
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