River water taking system

Abstract

The utility model discloses a riverway water taking system which comprises a water taking channel arranged on one side of a riverway in a communicating and connecting mode, and a gate valve device arranged at a water taking opening where the water taking channel is connected with the riverway, and is characterized in that a telescopic spur dike device is further arranged at the position adjacent to the downstream end of a river bank where the water taking channel is located and comprises a spur dike body; the spur dike body is telescopically installed in a dike body containing groove formed in a river bank and right opposite to a river channel, a dike body telescopic control device is arranged on one side of the dike body containing groove and connected with the spur dike body, and the dike body telescopic control device can control one end of the spur dike body to extend out of the dike body containing groove. The water taking device has the advantages that the water taking amount can be better adjusted according to the water level, and the water taking amount is kept stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a river water taking and water diversion technical field, concretely relates to a river water taking system. BACKGROUND

[0002] People's urban life and agricultural irrigation water usually need to take water through the river, and the general river water taking mode is to set up a communicating water taking channel on one side of the river to lead out the river water to realize water taking. The river water taking often has different demands on the water taking amount at different time periods, and the water taking flow of the water taking port needs to be controlled. In the prior art, a traditional gate is usually arranged at the water taking port to control the water diversion flow, and this gate has simple structure and is easy to manufacture, but has single function and has the following defects: the gate adjustment effect is limited, and if the water level of the river is low due to water level fluctuation or the like, it is difficult to obtain sufficient water taking amount, and it is difficult to achieve the water taking effect meeting the demand.

[0003] Therefore, how to provide a river water taking system capable of conveniently adjusting the water taking amount according to the water level becomes a problem to be considered and solved by the person skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the utility model solves the technical problem of how to provide a river water taking system capable of better adjusting the water taking amount according to the water level.

[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A river water taking system, comprising a water taking channel connected in communication and arranged on one side of a river, and a gate valve device arranged at a water taking port where the water taking channel and the river meet, characterized in that a telescopic dike device is further arranged adjacent to a downstream end of a river bank where the water taking channel is located, the telescopic dike device comprises a dike body, the dike body is telescopically installed in a body accommodating groove arranged on the river bank and facing the river, a body telescopic control device is arranged on one side of the body accommodating groove and connected with the dike body, and the body telescopic control device can control one end of the dike body to extend out of the body accommodating groove.

[0007] In this way, the river water taking system can be controlled according to the water flow in the water taking channel, and when the flow cannot meet the water taking demand, the gate valve device is gradually opened to increase the flow in the water taking channel to meet the water taking demand. If the water level of the river decreases and the gate valve device is completely opened but still cannot meet the water taking demand, the dike body can be further controlled to extend into the river under the action of the body telescopic control device, so that the water level at the water taking channel is raised, and the water flow in the water taking channel is increased. The water taking demand is better met, and the water taking effect is ensured.

[0008] Further, the gate valve device comprises a gate plate installed in the gate slot on both sides of the water intake in the vertical direction, a screw rod arranged on the gate plate in the vertical direction, and a nut with a limited height direction arranged in cooperation with the screw rod, and the nut is in driving connection with the gate motor.

[0009] Thus, the nut and the screw rod form a screw-nut driving pair, the gate motor output drives the nut to rotate forward or reversely, which drives the screw rod to move upward or downward, and further realizes the opening and closing control of the gate valve. The gate valve device has the advantages of simple structure and convenient control.

[0010] Further, the dam body telescopic control device comprises a rack fixedly arranged on the groyne dam body in the length direction of the groyne dam body, and a transmission gear in meshing connection with the rack, and the transmission gear is in driving connection with the groyne motor installed on one side of the dam body accommodating groove.

[0011] Thus, the rack and the transmission gear form a gear-rack driving pair, the groyne motor output drives the transmission gear and the rack to drive the groyne to extend or retract, and realizes the control. The dam body telescopic control device has the advantages of simple structure and convenient control.

[0012] Further, the water intake channel is further provided with a flow detection device. Thus, the flow in the water intake channel can be detected for control.

[0013] Further, as an option, the water intake channel is a channel structure with an open top, the flow detection device comprises a water level detection device and a flow rate detection device arranged in the water intake channel, and the water level detection device and the flow rate detection device are connected with the control center.

[0014] Thus, the water level and the flow rate in the water intake channel can be detected by the water level detection device and the flow rate detection device respectively, and the water flow in the water intake channel can be calculated by the control center according to the obtained size of the water intake channel, and then the control of the gate valve device and the telescopic groyne device is realized. Thus, the water level detection device and the flow rate detection device can be obtained by using existing products with existing functions, and are easy to implement.

[0015] Alternatively, the water intake is a pipeline structure with the water intake located below the water surface of the river, the flow detection device comprises a first water pressure receiving groove and a second water pressure receiving groove which are arranged in communication at the top of the water intake, the first water pressure receiving groove is arranged on a large-diameter reducing section which is formed by outwardly extending of the water intake, and the second water pressure receiving groove is arranged on a constant-diameter section of the water intake at one end of the reducing section; a piston plate in a floating state is arranged in each of the first water pressure receiving groove and the second water pressure receiving groove, an upper end of the piston plate is fixedly provided with a piston rod, the piston rod is located in a darkroom, a vertical control laser lamp is arranged on the piston rod of the first water pressure receiving groove in vertical and parallel to the piston rod of the second water pressure receiving groove, and the control laser lamp is connected with a power supply; a vertical control photoelectric plate is arranged on the piston rod of the second water pressure receiving groove opposite to the control laser lamp, and two power output ends of the control photoelectric plate are connected to a joint control circuit of the gate valve device and the dam body telescopic control device.

[0016] In this way, when the water flows through the water pressure receiving groove, the water pressure acting on the pipe wall will lift the piston plate and the piston rod thereon upward. At the same time, due to the Venturi effect, there is a pressure difference at the positions of the first water pressure receiving groove and the second water pressure receiving groove based on the different diameters of the water intake pipeline, and the greater the water flow of the water intake, the greater the pressure difference will be, and the smaller the water flow of the water intake, the smaller the pressure difference will be. Therefore, when the water flow of the water intake decreases, the pressure difference between the first water pressure receiving groove and the second water pressure receiving groove becomes smaller, so that the height difference of the two piston rods lifted by the pressure becomes smaller, and then the area of the control laser lamp irradiated on the control photoelectric plate becomes larger, and the power output signal formed becomes larger. Therefore, according to the change of the power output signal, the control of the gate valve and the dam can be realized through the control circuit. Specifically, the joint control circuit is used to control the gate valve to be gradually opened and the dam to be gradually extended in sequence according to the change of the power signal output by the control photoelectric plate from small to large. That is, the automatic control process of the water flow of the water intake can be completed. It has the characteristics of simple structure and convenient control.

[0017] Further, the joint control circuit comprises a gate valve control ammeter and a dike control ammeter, the gate valve control ammeter and the dike control ammeter are connected in parallel with two power output terminals of the control photoelectric plate to form a parallel input terminal power supply circuit; the pointer for displaying current on the gate valve control ammeter is a rotatable gate valve control conductive pointer in the middle, the gate valve control conductive pointer and its own rotating shaft are insulated, a pair of gate valve lifting contacts are arranged in the forward rotation direction of the gate valve control conductive pointer and are connected after the gate valve control conductive pointer is rotated forward, the gate valve lifting contacts are connected with the power supply and the gate valve motor through wires to form a gate valve lifting control circuit (the gate valve lifting control circuit can control the gate valve motor to rotate forward and drive the gate plate to lift upward and open), a pair of gate valve descending contacts are arranged in the reverse rotation direction of the gate valve control conductive pointer and are connected after the gate valve control conductive pointer is rotated backward, the gate valve descending contacts are connected with the power supply and the gate valve motor through wires to form a gate valve descending control circuit (the gate valve descending control circuit can control the gate valve motor to rotate backward and drive the gate plate to descend and close; in specific implementation, the gate valve control conductive pointer is insulated in the middle and its two ends are connected with wires connected to the power supply to realize connection of the gate valve lifting control circuit after forward rotation and connection of the gate valve descending control circuit after backward rotation, of course, the structure of the dike control conductive pointer can also be used to realize the connection in implementation); the pointer for displaying current on the dike control ammeter is a rotatable dike control conductive pointer in the middle, the dike control conductive pointer and its own rotating shaft are insulated, a pair of dike extending contacts are arranged in the forward rotation direction of the dike control conductive pointer and are connected after the dike control conductive pointer is rotated forward, the dike extending contacts are connected with the power supply and the dike motor through wires to form a dike extending control circuit (the dike extending control circuit can drive the dike motor to rotate forward and make the dike extend outward), a pair of dike retracting contacts are arranged in the reverse rotation direction of the dike control conductive pointer and are connected after the dike control conductive pointer is rotated backward, the dike retracting contacts are connected with the power supply and the dike motor through wires to form a dike retracting control circuit (the dike retracting control circuit can drive the dike motor to rotate backward and make the dike retract inward, in specific implementation, the dike control conductive pointer is conductive as a whole and is connected with the dike extending control circuit after forward rotation and the dike retracting control circuit after backward rotation, of course, the structure of the gate valve control conductive pointer can also be used to realize the connection in implementation); a first normally closed safety electromagnetic switch (used for preventing short circuit) is installed in the dike extending control circuit, the electromagnet of the first safety electromagnetic switch is connected in series in the dike retracting control circuit and can disconnect the first safety electromagnetic switch after connection, a second normally closed safety electromagnetic switch (used for preventing short circuit) is installed in the dike retracting control circuit, the electromagnet of the second safety electromagnetic switch is connected in series in the dike extending control circuit and can disconnect the second safety electromagnetic switch after connection.

[0018] The dyke extension control circuit is also provided with a dyke extension starting trigger switch in normally open state in series, which is installed on the screw rod of the gate and triggers on after the gate is lifted to the limit position; the dyke retraction control circuit is also provided with a dyke retraction starting trigger switch in normally open state in series, which is installed on the dam body accommodating groove and triggers on after the dyke is extended (so that the dyke retraction control circuit is turned on after the dyke is extended and the water flow of the water channel is reduced, but the dyke retraction control circuit is always in off state before the dyke is extended, so that it does not interfere with the control process of the gate valve); the gate valve lifting control circuit and the gate valve descending control circuit have a common line section with the same wire at the position connected with the gate valve motor, and a gate valve protection trigger switch in normally closed state is installed in the common line section and triggers off after the dyke is extended.

[0019] Thus, in the above-mentioned combined control circuit, the control photocell outputs power to simultaneously drive the pointers of the gate valve control ammeter and the dike control ammeter to rotate, and through the pre-calibration setting, when the gate valve is opened to about half the state and the water flow in the water channel can meet the demand, the control photocell outputs power to make the pointers of the two ammeters rotate to the zero state at the middle position between positive and reverse rotation. In use, when the water flow in the water channel decreases, the two power output ends of the control photocell output increased current, which simultaneously drives the pointers of the gate valve control ammeter and the dike control ammeter to rotate positively, and respectively connects the gate valve lifting contact and the dike extension contact. However, when the gate valve is not lifted to the limit position due to the existence of the dike extension start trigger switch on the screw rod, the dike extension control circuit will not be connected. Therefore, at this time, only the gate valve lifting control circuit is connected to work, so that the gate valve is lifted to increase the water flow in the water channel (on the contrary, when the water flow in the water channel increases, the pointers of the gate valve control ammeter and the dike control ammeter are reversed, and respectively connect the gate valve descending contact and the dike retracting contact. However, the existence of the dike retracting start trigger switch makes the dike retracting control circuit not be connected, so at this time, only the gate valve descending control circuit is connected to work, so that the gate valve is lowered to reduce the water flow in the water channel). Until the gate valve is lifted to the limit position and the water flow is still insufficient, at this time, the dike extension start trigger switch on the gate plate is connected by the screw rod, the dike extension control circuit is connected to work to drive the dike motor to rotate positively, so that the dike is extended. After the dike is extended, the dike retracting start trigger switch is connected, and the gate valve protection trigger switch is disconnected to protect the gate valve, so that the gate valve remains at the maximum opening position and does not move during the process of the dike continuing to extend or retract. At the same time, after the dike is extended, the dike retracting start trigger switch is connected, so once the water flow in the water channel is sufficient and excessive, the pointer of the dike control ammeter is reversed, and the dike retracting control circuit is connected to control the dike to gradually retract. When the dike is completely retracted, the gate valve protection trigger switch is actuated and changes to a normally closed state, so that the gate valve descending control circuit can start to work, and the gate valve starts to descend, which disconnects the dike extension start trigger switch on the screw rod and forms a circuit protection for the dike. Therefore, the above-mentioned combined control circuit realizes perfect connection and switching control between the gate valve control part and the dike control part by relying on the pure circuit structure, without using a computer or PLC combined with a remote control switch for control, and has the characteristics of low cost and reliable control.

[0020] Further, the top of the water channel is located on the equal diameter section at the other end of the reducing section, and a third water pressure receiving groove is arranged symmetrically with the second water pressure receiving groove, the third water pressure receiving groove is internally provided with a piston plate in a floating state and a corresponding piston rod, and the piston plate and the piston rod in the third water pressure receiving groove are symmetrically arranged with the piston plate and the piston rod in the second water pressure receiving groove, and a vertical calibration laser lamp is symmetrically arranged on the piston rod of the first water pressure receiving groove at the side opposite to the control laser lamp, the piston rod of the third water pressure receiving groove is arranged in the darkroom and is provided with a vertical calibration photoelectric plate opposite to the calibration laser lamp, the calibration photoelectric plate is symmetrically arranged with the control photoelectric plate, and the power output end of the calibration photoelectric plate and a calibration ammeter are connected in series to form a control loop.

[0021] The circuit branch in which the gate valve control ammeter is arranged, the circuit branch in which the dike control ammeter is arranged, and the circuit main line in which the two power output ends of the control photoelectric plate are connected are respectively provided with a calibration sliding rheostat.

[0022] The gate valve device is further provided with a gate valve calibration motor, and the output shaft of the gate valve calibration motor is in transmission connection with the nut on the screw rod.

[0023] In this way, when zero calibration is needed, the gate valve is adjusted to a half extended state by the gate valve calibration motor, and the water flow information of the water channel at this time is fed back through the calibration ammeter reading, so that the required flow for normal water taking is met, and then the resistance values of the three calibration sliding rheostats are adjusted so that the pointers of the gate valve control ammeter and the dike control ammeter are simultaneously in a zero state, so that the zero calibration of the gate valve control ammeter and the dike control ammeter can be more accurately controlled.

[0024] Further, the dike extension start trigger switch comprises an insulating rod coaxially arranged on the upper end of the screw rod, an electrically conductive section is arranged in the middle of the insulating rod, an electrically conductive cylinder is arranged in contact with the sliding sleeve on the upper end of the insulating rod, the electrically conductive section and the electrically conductive cylinder are connected in series to the dike extension control circuit, and the electrically conductive section and the electrically conductive cylinder are in contact and conductive when the screw rod rises to the limit position.

[0025] In this way, the structure is simple and the control is reliable.

[0026] Further, the dike retraction start trigger switch comprises a spring switch trigger rod connected in series in the dike retraction control circuit, and an insulating pressing rod is arranged at the innermost end of the dike, when the dike is completely retracted, the insulating pressing rod and the spring switch trigger rod are in abutment and keep the spring switch trigger rod in a normally open state, and when the dike is extended, the insulating pressing rod moves away from the spring switch trigger rod and returns to a closed and connected state.

[0027] In this way, the structure is simple and the control is reliable.

[0028] Furthermore, the gate valve protection trigger switch includes a normally closed switch contact rod connected in series in a collinear segment. The switch contact rod is connected to a pressure head via a connecting rod and a spring. The front end of the pressure head has an inclined surface located on the front extension path of the groyne, so that when the groyne extends, the pressure head can be pushed through the inclined surface to open the switch contact rod.

[0029] This design offers advantages such as simple structure and reliable control.

[0030] In summary, this utility model has the advantage of being able to better adjust the water intake according to the water level and maintain a stable water intake. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the river water intake system used in the implementation of this utility model. The figure is a top view. The arrows in the figure indicate the direction of water flow.

[0032] Figure 2 This is a schematic diagram of the automatic control system of the river water intake system used in the implementation of this utility model. To better show the circuit connection structure, the applicant adjusted the view orientation of the schematic diagram of the non-circuit components. The structure of the water intake channel and its upper device shown in the figure is as follows: Figure 1 The left view direction, involving the groynes, is as follows: Figure 1 The same top-down view is used for both sections involving the ammeters.

[0033] Figure 3 for Figure 2 The enlarged diagram at point A in the middle is used to show the structure of the groyne retraction start trigger switch.

[0034] Figure 4 for Figure 2 The enlarged diagram at point B in the middle shows the structure of the gate valve protection trigger switch.

[0035] Figure 5 for Figure 2 A schematic diagram of the structure of an ammeter for controlling a single gate valve, viewed from the front.

[0036] Figure 6 for Figure 2 A schematic diagram of the structure of the ammeter used for controlling a single groyne in the middle, viewed from the front.

[0037] Figure 7 for Figure 2 A schematic diagram of the power supply circuit for a single input terminal.

[0038] Figure 8 for Figure 2 A schematic diagram of the control circuit for lifting a single gate valve.

[0039] Figure 9 for Figure 2 A schematic diagram of the control circuit for reducing the pressure on a single gate valve.

[0040] Figure 10 for Figure 2 A schematic diagram of the control circuit for the extension of a single groyne.

[0041] Figure 11 for Figure 2 A schematic diagram of the individual groyne retraction control circuit. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to specific embodiments.

[0043] Example: A river water intake system, see [link / reference] Figures 1-11 As shown, the system includes a water intake channel 2 connected to one side of the river channel 1. A gate valve device is installed at the water intake point where the water intake channel 2 connects to the river channel. A telescopic spur dike device is also installed adjacent to the downstream end of the riverbank where the water intake channel is located. The telescopic spur dike device includes a spur dike body 3, which is telescopically installed in a dam body receiving groove 4 located on the riverbank facing the river channel. A dam body telescopic control device is installed on one side of the dam body receiving groove 4 and connected to the spur dike body. The dam body telescopic control device can control one end of the spur dike body 3 to extend outward into the dam body receiving groove. A flow detection device is also installed in the water intake channel.

[0044] In this way, the water intake system of this river channel can detect the water flow rate in the intake channel through a flow detection device. When the flow rate is insufficient to meet the water intake demand, the gate valve device is controlled to gradually open, increasing the flow rate in the intake channel to meet the water intake demand. If the river water level drops, and even with the gate valve device fully open, the water intake demand still cannot be met, the groynes can be further extended into the river channel under the action of the dam expansion and contraction control device, thereby raising the water level at the intake channel and increasing the water flow rate in the intake channel. This better meets the water intake demand and ensures the water intake effect. In implementation, the flow detection device is connected to the gate valve device and the dam expansion and contraction control device respectively through an automatic control system.

[0045] The gate valve device includes a gate plate 5 installed vertically in the gate slots on both sides of the water intake. A screw 6 is installed vertically on the gate plate 5. A nut 7 with a height limit is screwed onto the screw 6. The nut 7 is connected to the gate valve motor 8 for transmission.

[0046] This combination of nut and screw forms a lead screw-nut transmission pair. The gate valve motor output drives the nut to rotate forward or in reverse, which in turn drives the screw to move upward or downward, thereby controlling the opening and closing of the gate valve. It has the advantages of simple structure and convenient control.

[0047] The dam body telescopic control device comprises a rack 9 fixedly arranged on the length direction of the groyne dam body 3, and a transmission gear 10 engaged with the rack 9, and the transmission gear 10 is in transmission connection with a groyne motor 13 arranged on one side of the dam body accommodating groove.

[0048] In this way, the rack and the transmission gear form a gear rack transmission pair, and the groyne motor outputs forward and reverse rotation, drives the groyne to extend or retract through the transmission gear and the rack, and realizes control. The device has the advantages of simple structure and convenient control.

[0049] As an alternative embodiment, the water intake channel is an open channel structure, the flow detection device comprises a water level detection device and a flow rate detection device arranged in the water intake channel, the water level detection device and the flow rate detection device are connected to the control center, and the control center is connected to the gate valve device and the telescopic groyne device to form an automatic control system.

[0050] In this way, the water level detection device and the flow rate detection device can detect the water level and the flow rate in the water intake channel respectively, and then the control center can calculate the water flow in the water intake channel according to the obtained size of the water intake channel, and then feedback to realize the control of the gate valve device and the telescopic groyne device. In this way, the water level detection device and the flow rate detection device can be obtained by using existing products with existing functions, and are easy to implement.

[0051] In the embodiment, the water intake channel 2 is a pipeline structure with the water intake port located below the water surface of the river channel (especially suitable for water intake at a high position of the riverbed), the flow detection device comprises a first water pressure receiving groove 11 and a second water pressure receiving groove 12 arranged in communication at the top of the water intake channel, the first water pressure receiving groove 11 is arranged on a large-diameter variable-diameter section which is outwardly expanded from the water intake channel, and the second water pressure receiving groove 12 is arranged on a constant-diameter section of the water intake channel at one end of the variable-diameter section; a floating piston plate is arranged in each of the first water pressure receiving groove 11 and the second water pressure receiving groove 12, and a piston rod is fixedly arranged on the upper end of the piston plate and located in a darkroom (not shown in the darkroom diagram), the piston rod of the first water pressure receiving groove 11 is vertically arranged in parallel with the piston rod of the second water pressure receiving groove, and a vertical control laser lamp 14 is arranged on the piston rod of the second water pressure receiving groove, and the control laser lamp 14 is connected to a power supply 15; a vertical control photoelectric plate 16 is arranged on the piston rod of the second water pressure receiving groove opposite to the control laser lamp, and the two power output ends of the control photoelectric plate 16 are connected to the joint control circuit of the gate valve device and the dam body telescopic control device to form an automatic control system.

[0052] In this way, when the water flows through the water pressure receiving groove, the water pressure acting on the pipe wall will push the piston plate and the piston rod thereon upward. At the same time, due to the Venturi effect, there will be a pressure difference between the first water pressure receiving groove and the second water pressure receiving groove based on the different pipe diameters of the water intake channel, and the greater the water flow of the water intake channel, the greater the pressure difference will be, and the smaller the water flow of the water intake channel, the smaller the pressure difference will be relatively. Therefore, when the water flow of the water intake channel decreases, the pressure difference between the first water pressure receiving groove and the second water pressure receiving groove becomes smaller, so that the height difference of the two piston rods pushed by the pressure becomes smaller, and then the area of the control laser lamp irradiated on the control photoelectric plate becomes larger, and the power output signal formed becomes larger. Therefore, according to the change of the power output signal, the control circuit can be used to control the gate valve and the dike. Specifically, the combined control circuit is used to control the gate valve to be gradually opened and the dike to be gradually extended in sequence according to the change of the power signal output by the control photoelectric plate from small to large. That is, the automatic control process of the water flow of the water intake channel can be completed. It has the characteristics of simple structure and convenient control.

[0053] The joint control circuit includes a gate valve control ammeter 17 and a dike control ammeter 18. The gate valve control ammeter 17 and the dike control ammeter 18 are connected in parallel with two power output ends of the control photoelectric plate 16 to form a parallel input power supply circuit 19. The pointer for displaying current on the gate valve control ammeter 17 is a rotatable gate valve control conductive pointer 20 in the middle. The gate valve control conductive pointer 20 is insulated from its own rotating shaft. A pair of gate valve lifting contacts 21 are arranged in the forward rotation direction of the gate valve control conductive pointer 20 and are connected to the gate valve control conductive pointer after the forward rotation. The gate valve lifting contacts 21 are connected to the power supply 15 and the gate valve motor 8 through wires to form a gate valve lifting control circuit 22. The gate valve lifting control circuit can control the forward rotation of the gate valve motor and drive the gate to lift upward and open. A pair of gate valve descending contacts 23 are arranged in the reverse rotation direction of the gate valve control conductive pointer 20 and are connected to the gate valve control conductive pointer after the reverse rotation. The gate valve descending contacts 23 are connected to the power supply 15 and the gate valve motor 8 through wires to form a gate valve descending control circuit 24. The gate valve descending control circuit can control the reverse rotation of the gate valve motor 8 and drive the gate to descend and close. In specific implementation, the middle part of the gate valve control conductive pointer 20 is insulated, and the two ends are connected to the wires connected to the power supply to realize the connection of the gate valve lifting control circuit after the forward rotation and the connection of the gate valve descending control circuit after the reverse rotation. Of course, the structure of the dike control conductive pointer can also be used to realize the connection. The pointer for displaying current on the dike control ammeter 18 is a rotatable dike control conductive pointer 25 in the middle. The dike control conductive pointer 25 is insulated from its own rotating shaft. A pair of dike extending contacts 26 are arranged in the forward rotation direction of the dike control conductive pointer 25 and are connected to the dike control conductive pointer after the forward rotation. The dike extending contacts 26 are connected to the power supply 15 and the dike motor 13 through wires to form a dike extending control circuit 27. The dike extending control circuit can drive the dike motor to rotate forward and make the dike extend outward. A pair of dike retracting contacts 28 are arranged in the reverse rotation direction of the dike control conductive pointer 25 and are connected to the dike control conductive pointer 25 after the reverse rotation. The dike retracting contacts 28 are connected to the power supply 15 and the dike motor 13 through wires to form a dike retracting control circuit 29. The dike retracting control circuit can drive the dike motor to rotate reversely and make the dike retract inward. In specific implementation, the dike control conductive pointer 25 is conductive as a whole and is connected to the dike extending control circuit after the forward rotation and the dike retracting control circuit after the reverse rotation. Of course, the structure of the gate valve control conductive pointer can also be used to realize the connection.A first normally closed safety electromagnetic switch 30 (for preventing short circuit) is installed in the groyne extension control circuit 27, the electromagnet of the first normally closed safety electromagnetic switch 30 is connected in series in the groyne retraction control circuit 29 and can turn off the first normally closed safety electromagnetic switch 30 after being turned on, a second normally closed safety electromagnetic switch 31 (for preventing short circuit) is also installed in the groyne retraction control circuit 29, the electromagnet of the second normally closed safety electromagnetic switch 31 is connected in series in the groyne extension control circuit 27 and can turn off the second normally closed safety electromagnetic switch 31 after being turned on;

[0054] A normally open groyne extension start trigger switch 32 is also connected in series in the groyne extension control circuit 27, the groyne extension start trigger switch 32 is installed on the screw rod 6 of the gate and is triggered to turn on after the gate rises to the limit position; a normally open groyne retraction start trigger switch 33 is also connected in series in the groyne retraction control circuit 29, the groyne retraction start trigger switch 33 is installed on the groyne accommodating groove and is triggered to turn on after the groyne 3 extends (so that once the groyne extends, the groyne retraction control circuit can be turned on as soon as the water flow in the water channel decreases, but before the groyne extends, the groyne retraction control circuit can be kept in the off state to ensure that it does not interfere with the control process of the gate valve); the gate valve lifting control circuit 22 and the gate valve lowering control circuit 24 have a common line section 35 with the same wire at the position connected to the gate valve motor 8, a normally closed gate valve protection trigger switch 36 is installed in the common line section 35 and is triggered to turn off after the groyne extends.

[0055] Thus, in the above-mentioned combined control circuit, the control photocell outputs power to simultaneously drive the pointers of the gate valve control ammeter and the dike control ammeter to rotate, and through the pre-calibration setting, when the gate valve is opened to about half the state and the water flow in the water channel can meet the demand, the control photocell outputs power to make the pointers of the two ammeters rotate to the zero state at the middle position between positive and reverse rotation. In use, when the water flow in the water channel decreases, the two power output ends of the control photocell output increased current, which simultaneously drives the pointers of the gate valve control ammeter and the dike control ammeter to rotate positively, and respectively connects the gate valve lifting contact and the dike extension contact. However, when the gate valve is not lifted to the limit position due to the existence of the dike extension start trigger switch on the screw rod, the dike extension control circuit will not be connected. Therefore, at this time, only the gate valve lifting control circuit is connected to work, so that the gate valve is lifted to increase the water flow in the water channel (on the contrary, when the water flow in the water channel increases, the pointers of the gate valve control ammeter and the dike control ammeter are reversed, and respectively connect the gate valve descending contact and the dike retracting contact. However, the existence of the dike retracting start trigger switch makes the dike retracting control circuit not be connected, so at this time, only the gate valve descending control circuit is connected to work, so that the gate valve is lowered to reduce the water flow in the water channel). Until the gate valve is lifted to the limit position and the water flow is still insufficient, at this time, the dike extension start trigger switch on the gate plate is connected by the screw rod, the dike extension control circuit is connected to work to drive the dike motor to rotate positively, so that the dike is extended. After the dike is extended, the dike retracting start trigger switch is connected, and the gate valve protection trigger switch is disconnected to protect the gate valve, so that the gate valve remains at the maximum opening position during the process of the dike continuing to extend or retract and does not act. At the same time, after the dike is extended, the dike retracting start trigger switch is connected, so once the water flow in the water channel is sufficient and excessive, the pointer of the dike control ammeter is reversed, and the dike retracting control circuit is connected to control the dike to gradually retract. When the dike is completely retracted, the gate valve protection trigger switch acts and changes to a normally closed state, so that the gate valve descending control circuit can start to work, and the gate valve starts to descend, which disconnects the dike extension start trigger switch on the screw rod and forms a circuit protection for the dike. Therefore, the above-mentioned combined control circuit realizes the perfect connection and switching control between the gate valve control part and the dike control part by relying on the pure circuit structure, without using a computer or PLC combined with a remote control switch for control, and has the characteristics of low cost and reliable control.

[0056] Wherein, the top of the water channel 2 is located on the equal diameter section of the other end of the reducing section, and a third water pressure receiving groove 38 is arranged symmetrically with the second water pressure receiving groove 12, the third water pressure receiving groove 38 is internally provided with a piston plate in a floating state and a corresponding piston rod, and is symmetrically structured with the piston plate and the piston rod in the second water pressure receiving groove 12, and a vertical calibration laser lamp 39 (the calibration laser lamp is connected to a power supply for power supply) is symmetrically installed on the piston rod of the first water pressure receiving groove 11 on the side opposite to the control laser lamp 14, the piston rod of the third water pressure receiving groove 38 is located in a darkroom and is provided with a vertical calibration photoelectric plate 40 opposite to the calibration laser lamp, the calibration photoelectric plate 40 is symmetrically arranged with the control photoelectric plate 16, and the power output end of the calibration photoelectric plate 40 and a calibration ammeter 41 are connected in series to form a control loop.

[0057] The circuit branch where the gate valve control ammeter 17 is located, the circuit branch where the dike control ammeter 18 is located, and the circuit trunk where the two power output ends of the control photoelectric plate 16 are connected are respectively provided with a calibration sliding resistor 42.

[0058] The gate valve device is further provided with a gate valve calibration motor 43, and the output shaft of the gate valve calibration motor 43 is in transmission connection with the nut 7 on the screw rod.

[0059] In this way, when calibration and zero setting are required, the gate valve is adjusted to a half extended state by the gate valve calibration motor, and the water flow information of the water channel at this time is fed back through the calibration ammeter reading, so that the required flow for regular water taking is met, and then the pointers of the gate valve control ammeter and the dike control ammeter are simultaneously in a zero setting state by adjusting the resistance values of the three calibration sliding resistors. Therefore, the above structure can more accurately control the zero setting calibration of the gate valve control ammeter and the dike control ammeter.

[0060] The dike extension start trigger switch 32 comprises an insulating rod 44 coaxially arranged on the upper end of the screw rod 6, an electrically conductive section 45 arranged in the middle of the insulating rod 44, and an electrically conductive cylinder 46 arranged in contact with the sliding sleeve on the upper end of the insulating rod, the electrically conductive section 45 and the electrically conductive cylinder 46 are connected in series to the dike extension control circuit 27, and the electrically conductive section 45 and the electrically conductive cylinder 46 are in contact and conductive when the screw rod 6 rises to the limit position.

[0061] In this way, the structure is simple, and the control is reliable.

[0062] The trigger switch 33 for starting the retraction of the spur dike comprises a spring switch contact rod connected in series in the control circuit for the retraction of the spur dike, and an insulating press rod 48 installed at the innermost end of the spur dike 3. When the spur dike 3 is fully retracted, the insulating press rod 48 and the spring switch contact rod abut and keep the spring switch contact rod in the normally open state. When the spur dike is extended, the insulating press rod moves away from the spring switch contact rod and the spring switch contact rod returns to the closed state.

[0063] Thus, the structure is simple and the control is reliable.

[0064] The trigger switch 36 for protecting the gate valve comprises a normally closed switch contact rod connected in series in the common line section. The switch contact rod is connected with a press head 49 through a connecting rod and a spring. The front end of the press head 49 has an inclined surface located on the path of the extension of the front end of the spur dike, so that when the spur dike 3 is extended, the press head can be pushed by the inclined surface to open the switch contact rod.

[0065] In another implementation, the control circuit for the extension of the spur dike is further provided with a normally closed limit position limit switch 50 for the extension of the spur dike. The limit switch is installed on the dam body accommodating groove and can be in contact with the insulating press rod when the spur dike is extended to the limit position to achieve disconnection. Thus, the limit position of the extension of the spur dike can be better protected.

Claims

1. A river water intake system comprising a water intake channel arranged in communication with a river on one side of the river, a gate valve device being arranged at a water intake opening where the water intake channel meets the river, characterized in that The water intake channel is provided with a telescopic dike device adjacent to the downstream end of the river bank, the telescopic dike device comprising a dike body telescopically installed in a dike body accommodating groove provided opposite the river channel on the river bank, the dike body accommodating groove being provided with a dike body telescopic control device connected to the dike body on one side, and the dike body telescopic control device being capable of controlling the dike body to extend out of the dike body accommodating groove at one end.

2. The river intake system of claim 1, wherein, The gate valve device comprises a gate plate installed in the gate slots on both sides of the water intake opening in the vertical direction, a screw rod provided on the gate plate in the vertical direction, and a nut with a limited height direction rotationally connected to the screw rod, and the nut is drivingly connected to the gate motor.

3. The river intake system of claim 2, wherein, The dike body telescopic control device comprises a rack fixedly provided on the dike body in the length direction of the dike body, and a transmission gear meshing with the rack, and the transmission gear is drivingly connected to the dike motor installed on one side of the dike body accommodating groove.

4. The river intake system of claim 3, wherein, The water intake channel is further provided with a flow detection device.

5. The river intake system of claim 4, wherein, The water intake channel is an open channel structure, and the flow detection device comprises a water level detection device and a flow rate detection device provided in the water intake channel, and the water level detection device and the flow rate detection device are connected to the control center.

6. The river intake system of claim 4, wherein, The water intake channel is a pipeline structure with the water intake opening located below the water surface of the river channel, and the flow detection device comprises a first water pressure receiving groove and a second water pressure receiving groove connected at the top of the water intake channel, the first water pressure receiving groove is provided on a large-diameter variable-diameter section extending outwardly and protruding from the water intake channel, and the second water pressure receiving groove is provided on a constant-diameter section of the water intake channel at one end of the variable-diameter section; each of the first water pressure receiving groove and the second water pressure receiving groove is provided with a floating piston plate, and the upper end of the piston plate is fixedly provided with a piston rod, the piston rod is located in a darkroom, and the piston rod of the first water pressure receiving groove is provided with a vertical control laser lamp parallel to the piston rod of the second water pressure receiving groove in the vertical direction, and the control laser lamp is connected to a power source; the piston rod of the second water pressure receiving groove is provided with a vertical control photoelectric plate opposite the control laser lamp, and the two power output ends of the control photoelectric plate are connected to the joint control circuit of the gate valve device and the dike body telescopic control device.

7. The river intake system of claim 6, wherein, The joint control circuit includes a gate valve control ammeter and a dike control ammeter, the gate valve control ammeter and the dike control ammeter are connected in parallel with two power output terminals of the control photoelectric plate to form a parallel input terminal power supply circuit, the pointer for displaying current on the gate valve control ammeter is a rotatable gate valve control conductive pointer in the middle, the gate valve control conductive pointer and the shaft thereof are insulated, a pair of gate valve lifting contacts are arranged in the forward rotation direction of the gate valve control conductive pointer and are connected after the gate valve control conductive pointer is rotated forward, the gate valve lifting contacts are connected with the power supply and the gate valve motor through wires to form a gate valve lifting control circuit, a pair of gate valve descending contacts are arranged in the reverse rotation direction of the gate valve control conductive pointer and are connected after the gate valve control conductive pointer is rotated backward, the gate valve descending contacts are connected with the power supply and the gate valve motor through wires to form a gate valve descending control circuit, the pointer for displaying current on the dike control ammeter is a rotatable dike control conductive pointer in the middle, the dike control conductive pointer and the shaft thereof are insulated, a pair of dike extending contacts are arranged in the forward rotation direction of the dike control conductive pointer and are connected after the dike control conductive pointer is rotated forward, the dike extending contacts are connected with the power supply and the dike motor through wires to form a dike extending control circuit, a pair of dike retracting contacts are arranged in the reverse rotation direction of the dike control conductive pointer and are connected after the dike control conductive pointer is rotated backward, the dike retracting contacts are connected with the power supply and the dike motor through wires to form a dike retracting control circuit, a first normally closed safety electromagnetic switch is installed in the dike extending control circuit, the electromagnet of the first safety electromagnetic switch is connected in series in the dike retracting control circuit and can disconnect the first safety electromagnetic switch after being connected, a second normally closed safety electromagnetic switch is installed in the dike retracting control circuit, the electromagnet of the second safety electromagnetic switch is connected in series in the dike extending control circuit and can disconnect the second safety electromagnetic switch after being connected. A dike extending start trigger switch in the normally open state is arranged in series in the dike extending control circuit, the dike extending start trigger switch is installed on the screw rod of the gate plate and is triggered to be connected after the gate plate rises to the limit position, a dike retracting start trigger switch in the normally open state is arranged in series in the dike retracting control circuit, the dike retracting start trigger switch is installed on the dam body accommodating groove and is triggered to be connected after the dike extends, and the gate valve lifting control circuit and the gate valve descending control circuit have a common line section using the same wire at the position connected with the gate valve motor, a gate valve protection trigger switch in the normally closed state is installed in the common line section and is triggered to be disconnected after the dike extends.

8. The river intake system of claim 7, wherein, The top of the water intake channel is located on the other end of the variable diameter section, and a third water pressure receiving groove is arranged symmetrically with the second water pressure receiving groove. The third water pressure receiving groove is internally provided with a piston plate in a floating state and a corresponding piston rod, which are symmetrically arranged with the piston plate and the piston rod in the second water pressure receiving groove. A vertical calibration laser lamp is symmetrically arranged on the piston rod of the first water pressure receiving groove on the side opposite to the control laser lamp. The piston rod of the third water pressure receiving groove is located in the darkroom and is provided with a vertical calibration photoelectric plate opposite to the calibration laser lamp. The calibration photoelectric plate and the control photoelectric plate are symmetrically arranged. The power output end of the calibration photoelectric plate and a calibration ammeter are connected in series to form a control loop. A calibration sliding rheostat is arranged in the circuit branch of the gate valve control ammeter, the circuit branch of the dike control ammeter, and the circuit trunk connected with the two power output ends of the control photoelectric plate. A gate valve calibration motor is further arranged in the gate valve device. The output shaft of the gate valve calibration motor is drivingly connected with the nut on the screw rod.

9. The river intake system of claim 7, wherein, The dike extension start trigger switch comprises an insulating rod coaxially arranged on the upper end of the screw rod. A conductive section is arranged in the middle of the insulating rod. A conductive cylinder is arranged on the upper end of the insulating rod in contact with the sliding sleeve. The conductive section and the conductive cylinder are connected in series to the dike extension control circuit. When the screw rod rises to the limit position, the conductive section and the conductive cylinder are in contact and conductive.

10. The river intake system of claim 7, wherein, The dike retraction start trigger switch comprises a spring switch contact rod connected in series in the dike retraction control circuit and an insulating pressing rod arranged at the innermost end of the dike. When the dike is completely retracted, the insulating pressing rod and the spring switch contact rod are in abutment and remain in the normally open state. When the dike is extended, the insulating pressing rod moves away from the spring switch contact rod, which returns to the closed and connected state. The gate valve protection trigger switch comprises a normally closed switch contact rod connected in series in the collinear section. The switch contact rod is connected with a pressing head through a connecting rod and a spring. The pressing head has an inclined surface at the front end, which is located on the front end extension path of the dike. When the dike is extended, the pressing head can be pushed by the inclined surface to open the switch contact rod.

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