CN212375792U - Device for preventing silting by leading water before power station water pump - Google Patents
Device for preventing silting by leading water before power station water pump Download PDFInfo
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- CN212375792U CN212375792U CN202020426584.XU CN202020426584U CN212375792U CN 212375792 U CN212375792 U CN 212375792U CN 202020426584 U CN202020426584 U CN 202020426584U CN 212375792 U CN212375792 U CN 212375792U
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Abstract
The utility model relates to a front diversion silt prevention device of a power station water pump, which comprises a DCS centralized control system, a high-pressure water supply pipe, a bank hydraulic sand discharge pipe network, a diversion canal silt prevention pipe network, a bank silt thickness meter and a diversion canal silt thickness meter; the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network are both connected with a high-pressure water supply pipe, the shore hydraulic sand discharge pipe network is arranged at a shore part, the diversion canal silt prevention pipe network is arranged at a diversion canal part, and a plurality of high-pressure spray heads are arranged on the pipe networks of the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network; a plurality of shore sediment thickness meters are arranged at the shore part and matched with the shore hydraulic sediment discharge pipe network; the plurality of diversion canal silt thickness meters are arranged on the diversion canal part and matched with the diversion canal silt-preventing pipe network; and the DCS centralized control system controls the high-pressure water supply pipe to supply water or stop supplying water according to the measurement result of the sediment thickness meter. The application realizes the bank side hydraulic sand discharge and the diversion canal hydraulic silt prevention work without stopping, and is simple, economical and effective.
Description
Technical Field
The utility model relates to a power station water supply technical field, specifically say, relate to a diversion silt prevention device before power station water intaking pump.
Background
Water intake is a nutrition supply source of a power station water supply system and has very important significance. At present to the river sea water intaking that contains silt, or when the flood phase, the aquatic often contains higher silt, leads to the inlet channel of water intaking to form the silt siltation to make the unable normal water intaking of water intaking pump, still can lead to power station unit shut down accident when serious, bring great potential safety hazard, greatly reduced system's reliability and security for the water intaking system.
For the diversion canal flow that deposits easily, especially after water intaking system pauses to use for a period, in order to prevent the silting of diversion canal, the power station often stops the generator system regularly or stops the water intaking pump to cost a large amount of resources and carry out manual work or barge excavation desilting, in order to guarantee the security of later stage water intaking.
Therefore, it is necessary to design a device for preventing water diversion and silt in front of the water pump of the power station to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a diversion silt prevention device before reasonable in design, the simple efficient power station water intaking pump, carry out desilting and arrange husky to the inlet channel siltation silt before the water intaking pump to improve the reliability of water intaking system.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a diversion silt prevention device before power station water intaking pump which characterized in that: the system comprises a DCS centralized control system, a high-pressure water supply pipe, a bank hydraulic sand discharge pipe network, a diversion canal silt prevention pipe network, a bank silt thickness meter and a diversion canal silt thickness meter; the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network are both connected with a high-pressure water supply pipe, the shore hydraulic sand discharge pipe network is arranged at a shore part, the diversion canal silt prevention pipe network is arranged at the diversion canal part in front of the water intake pump, and a plurality of high-pressure spray heads are arranged on the pipe networks of the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network; the shore sediment thickness meter is provided with a plurality of shore sediment thickness meters, is arranged at the shore part and is matched with the shore hydraulic sediment discharge pipe network; the plurality of diversion canal silt thickness meters are arranged on the diversion canal part and matched with the diversion canal silt-preventing pipe network; the DCS centralized control system is respectively in communication connection with the bank sediment thickness meter and the diversion canal sediment thickness meter, and controls the high-pressure water supply pipe to supply water to the bank hydraulic sediment removal pipe network or stop supplying water according to the measurement result of the bank sediment thickness meter; and the DCS controls the high-pressure water supply pipe to supply water to the silt-preventing pipe network of the diversion canal or stop supplying water according to the measurement result of the diversion canal silt thickness meter.
Preferably, the high-pressure water supply pipe is connected with a high-pressure silt-preventing water pump, and the high-pressure silt-preventing water pump supplies high-pressure water to the high-pressure water supply pipe; and the high-pressure silt-preventing water pump is in communication connection with the DCS centralized control system.
Preferably, the high-pressure water supply pipe is provided with a slow-closing check valve and a pressure transmitter, and the pressure transmitter is in communication connection with the DCS centralized control system. The pressure transmitter is used for monitoring the running condition of the pump by combining the motor current of the high-pressure silt-proof water pump.
Preferably, electric isolation valves are arranged at the joints of the shore hydraulic sand discharge pipe network, the diversion canal silt prevention pipe network and the high-pressure water supply pipe, and are in communication connection with the DCS centralized control system.
Preferably, the high-pressure silt-preventing water pump is a submersible pump.
Preferably, the bank sediment thickness gauge and the penstock sediment thickness gauge are both ultrasonic level gauges.
The utility model discloses when specifically using:
the shore hydraulic sand discharge part: the silt siltation condition is measured according to bank side silt thickness meter, opens the high pressure silt prevention water pump that sets up at the water absorption well, produces the high pressure water, produces high-pressure rivers through arranging the multirow high pressure nozzle at the bank side canal bottom, outwards promotes and stirs bank side sedimentary silt, utilizes river rivers to carry the effect, arranges silt to low reaches, realizes the purpose of arranging the silt.
Silt prevention part of the diversion canal: and (3) similarly, measuring the sediment deposition condition according to a diversion canal sediment thickness meter, loosening and stirring sediment deposited at the bottom of the canal by using high-pressure water generated by a high-pressure silt-preventing water pump and high-pressure water flow generated by a plurality of high-pressure spray nozzles arranged at the bottom of the diversion canal, and delivering muddy water to an in-plant water pretreatment facility by a diversion and water taking pump for treatment to realize dredging of the diversion canal.
In the whole silt prevention process, a DCS centralized control system can be used for regularly and regularly starting a high-pressure silt prevention water pump and a corresponding electric isolating valve to perform shore hydraulic sand discharge and silt prevention work of a water diversion channel.
Compared with the prior art, the utility model, have following advantage and effect: the silt deposit condition is measured by the silt thickness meter or the high-pressure silt-preventing water pump and the high-pressure nozzle are simply and periodically started to form high-pressure water flow, so that shore hydraulic sand discharge and diversion channel hydraulic silt prevention work can be realized without stopping the machine, the operation is simple, economic and effective, the problem that a large amount of manpower or complex barges are used for dredging and dredging is solved, and the reliability of power station water taking is improved.
Drawings
In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic plan view of an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional structure diagram of an embodiment of the present invention.
Description of reference numerals:
four electrically operated isolation valves 3, 4, 5, 6;
the system comprises a high-pressure silt-preventing water pump 1, a slow-closing check valve 2, a high-pressure spray head 7, a pressure transmitter 8, silt 91 at the front bottom of the water diversion channel, silt 92 at the bottom of the water diversion channel, a high-pressure water supply pipe 10, a water diversion channel silt thickness meter 11, a shore silt thickness meter 12, a shore hydraulic silt-discharging pipe network 13 and a water diversion channel silt-preventing pipe network 14.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
See fig. 1-2.
The embodiment discloses a leading water silt preventing device before power station water intaking pump, including DCS centralized control system, high pressure silt preventing water pump 1, high pressure water supply pipe 10, bank side water conservancy sediment ejection pipe network 13, diversion channel silt preventing pipe network 14, bank side sediment thickness meter 12 and diversion channel sediment thickness meter 11.
In this embodiment, the high-pressure silt-preventing water pump 1 is a submersible pump. The high-pressure water supply pipe 10 is connected with the high-pressure silt-preventing water pump 1, and the high-pressure silt-preventing water pump 1 supplies high-pressure water to the high-pressure water supply pipe 10; a slow-closing check valve 2 and a pressure transmitter 8 are arranged on a section of high-pressure water supply pipe 10 positioned at the outlet end of the high-pressure silt-proof water pump 1, and the high-pressure silt-proof water pump 1 and the pressure transmitter 8 are in communication connection with a DCS (distributed control system). The pressure transmitter 8 is used for monitoring the running condition of the pump by combining the motor current of the high-pressure silt-proof water pump 1.
In this embodiment, the bank hydraulic sand discharge pipe network 13 and the penstock silt prevention pipe network 14 are both connected to the high-pressure water supply pipe 10, the bank hydraulic sand discharge pipe network 13 is arranged at a bank portion, the penstock silt prevention pipe network 14 is arranged at a penstock portion in front of the water intake pump, and the junctions of the bank hydraulic sand discharge pipe network 13 and the penstock silt prevention pipe network 14 and the high-pressure water supply pipe 10 are both provided with electric isolation valves, and the electric isolation valves are in communication connection with the DCS centralized control system.
In this embodiment, a plurality of high-pressure nozzles 7 are installed on both the pipelines of the shore hydraulic sand discharge pipe network 13 and the penstock silt prevention pipe network 14. When the high-pressure spray nozzle is arranged and installed, the high-pressure spray nozzle 7 is ensured to be positioned at the bottom of a shoreside canal or a diversion canal.
In this embodiment, the area of arranging of bank water conservancy sediment outflow pipe network 13 and diversion canal silt prevention pipe network 14 is decided according to actual conditions, under the general condition, in order to make things convenient for arranging of pipe network, divide bank water conservancy sediment outflow pipe network 13 and diversion canal silt prevention pipe network 14 equally into a plurality of pipe network unit and lay at the bottom of the bank canal or at the bottom of the diversion canal, and every pipe network unit all will set up electronic isolation valve with the junction of high pressure water supply pipe 10, in this embodiment, bank water conservancy sediment outflow pipe network 13 and diversion canal silt prevention pipe network 14 equally divide into two pipe network units, need set up four electronic isolation valves 3, 4, 5 and 6.
In addition, two shore sediment thickness meters 12 are arranged at the shore part and matched with the shore hydraulic sediment discharge pipe network 13, and one shore sediment thickness meter 12 corresponds to one pipe network unit of the shore hydraulic sediment discharge pipe network 13. The diversion channel silt thickness meter 11 sets up two, arranges in the diversion channel part, prevents the silt pipe network 14 cooperation with the diversion channel, and a diversion channel silt thickness meter 11 corresponds a pipe network unit of diversion channel silt pipe network 14. The bank sediment thickness gauge 12 and the penstock sediment thickness gauge 11 are ultrasonic level gauges.
In the embodiment, the DCS centralized control system is respectively in communication connection with the bank sediment thickness meter 12 and the aqueduct sediment thickness meter 11, and controls the high-pressure water supply pipe 10 to supply water to the bank hydraulic sediment discharge pipe network 13 or stop supplying water according to the measurement result of the bank sediment thickness meter 12; the DCS centralized control system controls the high-pressure water supply pipe 10 to supply water to the silt-preventing pipe network 14 of the penstock or stop supplying water according to the measurement result of the penstock silt thickness meter 11.
In the specific application: DCS centralized control system opens bank water conservancy sediment removal and diversion canal silt prevention work according to the quality of water of river and bank sediment thickness meter 12 and diversion canal sediment thickness meter 11 measuring, and the concrete implementation process is: according to the bank sediment situation measured by the bank sediment thickness meter 12, the DCS centralized control system starts an electric isolation valve 5 or 6 of bank hydraulic sediment discharge, then opens the high-pressure sediment prevention water pump 1, generates high-pressure water by the high-pressure sediment prevention water pump 1, pushes out and loosens sediment 91 deposited at the front bottom of the diversion canal through outward high-pressure water flow generated by two rows of high-pressure spray nozzles 7 arranged at the bank, pushes out the sediment outside the diversion canal or carries the loosened sediment to the downstream by river water flow, and closes the isolation valve 5 or 6 and the high-pressure sediment prevention water pump 1 after running for a certain time, thereby realizing the bank hydraulic sediment discharge; similarly, survey the siltation condition according to the inlet channel silt thickness meter 11, by DCS centralized control system according to the inlet channel bottom silt 92 siltation condition, open the inlet channel and prevent electronic isolating valve 3 or 4 that becomes silted up to and silt pump 1 is prevented to high pressure, produce high-pressure rivers through arranging a plurality of high pressure nozzle 7 in the inlet channel, stir siltation silt, utilize inflow and intake pump to bring away, realize that the inlet channel prevents siltation.
In the whole process, the DCS centralized control system can be used for regularly and regularly starting the high-pressure silt-preventing water pump 1 and the corresponding electric isolating valve to perform shore hydraulic sand discharge and silt prevention of the diversion canal. In addition, the diversion silt prevention device in front of the water intake pump of the power station can sequentially open the diversion canal one by one or one by one to prevent silt or bank-side sand discharge, the influence on the water intake quality and the water intake treatment facility is reduced, and the silt prevention use frequency of the diversion canal is higher than that of bank-side hydraulic sand discharge.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a diversion silt prevention device before power station water intaking pump which characterized in that: the system comprises a DCS centralized control system, a high-pressure water supply pipe, a bank hydraulic sand discharge pipe network, a diversion canal silt prevention pipe network, a bank silt thickness meter and a diversion canal silt thickness meter; the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network are both connected with a high-pressure water supply pipe, the shore hydraulic sand discharge pipe network is arranged at a shore part, the diversion canal silt prevention pipe network is arranged at the diversion canal part in front of the water intake pump, and a plurality of high-pressure spray heads are arranged on the pipe networks of the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network; the shore sediment thickness meter is provided with a plurality of shore sediment thickness meters, is arranged at the shore part and is matched with the shore hydraulic sediment discharge pipe network; the plurality of diversion canal silt thickness meters are arranged on the diversion canal part and matched with the diversion canal silt-preventing pipe network; the DCS centralized control system is respectively in communication connection with the bank sediment thickness meter and the diversion canal sediment thickness meter, and controls the high-pressure water supply pipe to supply water to the bank hydraulic sediment removal pipe network or stop supplying water according to the measurement result of the bank sediment thickness meter; and the DCS controls the high-pressure water supply pipe to supply water to the silt-preventing pipe network of the diversion canal or stop supplying water according to the measurement result of the diversion canal silt thickness meter.
2. The device of claim 1 for preventing siltation by diversion of water before the water pump of power station, characterized in that: the high-pressure water supply pipe is connected with the high-pressure silt-proof water pump, and the high-pressure silt-proof water pump supplies high-pressure water to the high-pressure water supply pipe; and the high-pressure silt-preventing water pump is in communication connection with the DCS centralized control system.
3. The device of claim 1 for preventing siltation by diversion of water before the water pump of power station, characterized in that: and the high-pressure water supply pipe is provided with a slow-closing check valve and a pressure transmitter, and the pressure transmitter is in communication connection with the DCS centralized control system.
4. The device of claim 1 for preventing siltation by diversion of water before the water pump of power station, characterized in that: and electric isolation valves are arranged at the joints of the shore hydraulic sand discharge pipe network and the diversion canal silt prevention pipe network and the high-pressure water supply pipe, and are in communication connection with the DCS centralized control system.
5. The device of claim 2, characterized in that: the high-pressure silt-preventing water pump adopts a submersible pump.
6. The device of claim 1 for preventing siltation by diversion of water before the water pump of power station, characterized in that: the bank sediment thickness gauge and the diversion canal sediment thickness gauge are both ultrasonic level gauges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020426584.XU CN212375792U (en) | 2020-03-27 | 2020-03-27 | Device for preventing silting by leading water before power station water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020426584.XU CN212375792U (en) | 2020-03-27 | 2020-03-27 | Device for preventing silting by leading water before power station water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212375792U true CN212375792U (en) | 2021-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020426584.XU Active CN212375792U (en) | 2020-03-27 | 2020-03-27 | Device for preventing silting by leading water before power station water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212375792U (en) |
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2020
- 2020-03-27 CN CN202020426584.XU patent/CN212375792U/en active Active
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