CN202003234U - Cooling water flow control device of hydro-power generating unit - Google Patents
Cooling water flow control device of hydro-power generating unit Download PDFInfo
- Publication number
- CN202003234U CN202003234U CN2010206840486U CN201020684048U CN202003234U CN 202003234 U CN202003234 U CN 202003234U CN 2010206840486 U CN2010206840486 U CN 2010206840486U CN 201020684048 U CN201020684048 U CN 201020684048U CN 202003234 U CN202003234 U CN 202003234U
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- cooling water
- water flow
- control device
- valve
- gate valve
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Abstract
The utility model relates to a cooling water flow control device of a hydro-power generating unit. A plurality of sensors are electrically connected with the input end of a PLC (Programmable Logic Controller), the output end of the PLC is electrically connected with a reversing valve, the output end of the reversing valve is communicated with a hydraulic cylinder through an oil pipe, the hydraulic cylinder is mechanically connected with a gate valve, and the input end of the reversing valve is communicated with an oil tank and a hydraulic pump through another oil pipe. In the cooling water flow control device of the hydro-power generating unit, which is provided by the utility model, the temperature sensors are respectively arranged at the hot air position and the cold air position of the unit to acquire control signals, so that the opening degree of the gate valve is controlled, further, the cooling water flow can be controlled, and the energy consumption is reduced.
Description
Technical field
The utility model relates to Hydropower Unit cooling control field, particularly a kind of Hydropower Unit cooling water flow amount control device.
Background technology
The cooling water system is cooled off Hydropower Unit usually from the water intaking of upstream, power station in the power station at present.What water was more is the air cooler of generators of Hydropower Unit.Because the design amount of redundancy is big, the factors such as variation of unit operation operating mode always adopt the fixing valve opening and the method for operation, and energy consumption is bigger.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of Hydropower Unit cooling water flow amount control device, can control the aperture of chilled water gate valve dynamically, cuts down the consumption of energy.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of Hydropower Unit cooling water flow amount control device, and a plurality of sensors are electrically connected with the input end of PLC, and the output terminal of PLC is electrically connected with reversal valve;
The output terminal of reversal valve is communicated with hydraulic cylinder by oil pipe, hydraulic cylinder and gate valve mechanical connection;
The input end of reversal valve is communicated with fuel tank and hydraulic pump by oil pipe.
Described sensor is temperature sensor and/or flow sensor.
The rod chamber of described hydraulic pump is positioned at the opening direction of gate valve.
Also be provided with surplus valve between described reversal valve and the hydraulic pump.
The minimum flow of described gate valve is the required minimum flow of cooling.
The water supply user of Hydropower Unit mainly is each bearing refrigeratory and air cooler of generators of generator, and in each subsystem, the air cooling system of the unit that temperature rise has the greatest impact to region of interest is the hot blast and the cold wind temperature of unit.Along with the variation of environment temperature and unit operation operating mode, hot blast and cold wind temperature variation also significantly change, so the variation reflection unit the most directly perceived cooling effect of unit hot blast and cold wind temperature variation, especially hot blast.
The Hydropower Unit cooling water flow amount control device that the utility model provides, by temperature sensor being set respectively,, realize control to the gate valve aperture by the control signal of obtaining of temperature sensor at unit hot blast and cold wind place, thereby realize the control of cooling water flow, cut down the consumption of energy.Because the flow of chilled water is bigger, directly uses the solenoid control difficulty higher, the utility model has adopted with reversal valve and has controlled hydraulic cylinder, with the scheme of hydraulic cylinder-controlled check valve, thereby controls more or less freelyly, has reduced and has controlled cost; The rod chamber of hydraulic pump is positioned at the opening direction of gate valve, like this when the control element fault, for example, when reversal valve breaks down to rod chamber and rodless cavity when simultaneously oil-filled, because there are area difference in rod chamber and rodless cavity, hydraulic pump always is tending towards making gate valve to open, thereby avoids damaging Hydropower Unit.The minimum flow of gate valve is exactly that gate valve can not be closed fully for the required minimum flow of cooling specifically, and its minimum aperture also can guarantee to cool off required minimum flow, thereby has avoided the control system fault that gate valve is closed fully, and Hydropower Unit is damaged.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Embodiment
In Fig. 1, a kind of Hydropower Unit cooling water flow amount control device, a plurality of sensors are electrically connected with the input end of PLC, and the output terminal of PLC is electrically connected with reversal valve 3;
The output terminal of reversal valve 3 is communicated with hydraulic cylinder 2 by oil pipe, hydraulic cylinder 2 and gate valve 1 mechanical connection;
The input end of reversal valve 3 is communicated with fuel tank 6 and hydraulic pump 5 by oil pipe.
Described sensor is temperature sensor and/or flow sensor.Prioritization scheme as auxiliary can be provided with temperature sensor respectively in the hot water or cold water, can also flow sensor be set in the rear end of gate valve 1, as the foundation of auxiliary control.
The rod chamber of described hydraulic pump 5 is positioned at the opening direction of gate valve 1.When the control element fault, for example, when reversal valve 3 breaks down to rod chamber and rodless cavity when simultaneously oil-filled, because there are area difference in rod chamber and rodless cavity, hydraulic pump always is tending towards making gate valve to open, thereby avoids damaging Hydropower Unit.
Also be provided with surplus valve 4 between described reversal valve 3 and the hydraulic pump 5.
The minimum flow of described gate valve 1 is the required minimum flow of cooling.Be that gate valve 1 can not be closed fully, its minimum aperture also can guarantee to cool off required minimum flow, thereby has avoided the control system fault that gate valve is closed fully, and Hydropower Unit is damaged.Manual gate valve can be set in addition to be used in maintenance chilled water being closed fully.
During use, the temperature of obtaining with temperature sensor is reduced to example, the signal of sensor is sent into PLC, after PLC handles, 3 commutations of control reversal valve, hydraulic pump 5 is communicated with the rod chamber of hydraulic cylinder 2, and the rodless cavity of hydraulic cylinder 2 is communicated with fuel tank 6, and hydraulic cylinder 2 drives gate valve 1 and reduces aperture, the flow of chilled water is reduced, thereby cut down the consumption of energy, after aperture reached setting value, this can obtain by flow sensor, or by being installed in the position transducer acquisition on the gate valve 1,3 commutations of PLC control reversal valve, the rod chamber and the rodless cavity of hydraulic cylinder 2 are all closed, and the aperture of gate valve 1 is kept, because system is not high for the instantaneous servo-actuated requirement of cooling water flow, keep under the state in the aperture of gate valve 1, PLC can control and close hydraulic pump 5, thereby saves the energy.
Claims (4)
1. Hydropower Unit cooling water flow amount control device, it is characterized in that: a plurality of sensors are electrically connected with the input end of PLC, and the output terminal of PLC is electrically connected with reversal valve (3);
The output terminal of reversal valve (3) is communicated with hydraulic cylinder (2) by oil pipe, hydraulic cylinder (2) and gate valve (1) mechanical connection;
The input end of reversal valve (3) is communicated with fuel tank (6) and hydraulic pump (5) by oil pipe.
2. a kind of Hydropower Unit cooling water flow amount control device according to claim 1, it is characterized in that: described sensor is temperature sensor and/or flow sensor.
3. a kind of Hydropower Unit cooling water flow amount control device according to claim 1 is characterized in that: the rod chamber of described hydraulic pump (5) is positioned at the opening direction of gate valve (1).
4. a kind of Hydropower Unit cooling water flow amount control device according to claim 1 is characterized in that: also be provided with surplus valve (4) between described reversal valve (3) and the hydraulic pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206840486U CN202003234U (en) | 2010-12-28 | 2010-12-28 | Cooling water flow control device of hydro-power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206840486U CN202003234U (en) | 2010-12-28 | 2010-12-28 | Cooling water flow control device of hydro-power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003234U true CN202003234U (en) | 2011-10-05 |
Family
ID=44705967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206840486U Expired - Fee Related CN202003234U (en) | 2010-12-28 | 2010-12-28 | Cooling water flow control device of hydro-power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739273A (en) * | 2019-01-07 | 2019-05-10 | 阜阳华润电力有限公司 | Power plant's water system and power plant's water system control method |
-
2010
- 2010-12-28 CN CN2010206840486U patent/CN202003234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739273A (en) * | 2019-01-07 | 2019-05-10 | 阜阳华润电力有限公司 | Power plant's water system and power plant's water system control method |
| CN109739273B (en) * | 2019-01-07 | 2021-10-12 | 阜阳华润电力有限公司 | Power plant water system and power plant water system control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20161228 |