A tailwater monitoring device for a hydropower station

Abstract

The present invention relates to a tailwater monitoring device for a hydropower station, and belongs to the technical field of water quality monitoring. It includes a dam body, an oil quality detector and a control console, wherein the oil quality detector is communicatively connected to the control console, a lifting assembly is fixedly installed on the dam body, a water pump is fixedly connected to the bottom end of the lifting assembly, and an annular water tank is also included, wherein the output end of the water pump is connected to an inlet pipe, the top end of the inlet pipe is connected to one end of the annular water tank, the end of the annular water tank away from the inlet pipe is connected to a drain pipe, two water gates are arranged on both sides of the annular water tank, and the oil quality detector is arranged between the two water gates. The present invention solves the problems of low efficiency and the like existing in the tailwater monitoring device for a hydropower station in the prior art.

Description

Technical Field

[0001] The invention relates to a tail water monitoring device for a hydropower station, belonging to the technical field of water quality monitoring. Background Art

[0002] The water downstream of a hydropower station is often used as domestic water. Therefore, the hydropower station requires good water quality and cannot contain chemical substances such as oil. In order to avoid water pollution caused by oil leakage from hydropower station equipment, the hydropower station needs to conduct regular water quality testing. The water quality testing in the prior art generally adopts fixed testing devices for testing and manual testing. Manual testing requires personnel to take a boat to the reservoir to sample the water body and then test the water samples. However, this approach has many limitations and is easily affected by the weather and other environmental factors. At the same time, the sampling position and depth of each manual sampling vary, and there are many uncontrollable factors. When using a fixed testing device for testing, the testing device in the prior art can only draw water once for testing once, and in actual use, in order to ensure the stability and accuracy of the data, it is often necessary to perform multiple measurements, which wastes a lot of time and cannot achieve continuous measurement.

[0003] The patent document with the prior art application number CN202123339785.X discloses a hydropower station tailwater oil pollution detection system, including a main control device, an oil quality detector, a water tank, a water pumping hose, a submersible pump, and a lifting device for installation on the reservoir dam. Among them, the oil quality detector is arranged in the water tank, the submersible pump is arranged on the lifting device, one end of the water pumping hose is connected to the water outlet of the submersible pump, and the other end is connected to the inside of the water tank. A drain pipe is also provided at the bottom of the water tank, and an electric valve is provided on the drain pipe. The main control device is electrically connected to the oil quality detector, the lifting device, the submersible pump and the electric valve respectively, and the main control device is also equipped with a communication module for wireless communication with the remote platform.

[0004] The tailwater monitoring device of a hydropower station in the prior art has problems such as low efficiency. Therefore, the present invention provides a tailwater monitoring device of a hydropower station for solving the above problems. Summary of the invention

[0005] In order to overcome the shortcomings of low efficiency and other existing tailwater monitoring devices of hydropower stations, the present invention designs a tailwater monitoring device for a hydropower station. The present invention avoids the time waste caused by repeated waterproofing and pumping during continuous measurement by arranging an annular water tank and a sluice, thereby increasing the efficiency of water quality detection.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A tailwater monitoring device for a hydropower station comprises a dam body, an oil quality detector and a control console, wherein the oil quality detector is communicatively connected to the control console, a lifting assembly is fixedly mounted on the dam body, a water pump is fixedly connected to the bottom end of the lifting assembly, and an annular water trough is also included, an output end of the water pump is connected to a water inlet pipe, the top end of the water inlet pipe is connected to one end of the annular water trough, an end of the annular water trough away from the water inlet pipe is connected to a drain pipe, two water gates are arranged on both sides of the annular water trough, and the oil quality detector is arranged between the two water gates.

[0008] The lifting assembly comprises a track, a slider is slidably connected to the track, the water pump is fixedly mounted on the slider, an electric hoist is fixedly connected to the top of the track, and the electric hoist is used to drive the slider to move on the track.

[0009] Side plates are fixedly connected on both sides of the annular water tank, and the side plates are respectively arranged between the two water gates. A moving cylinder is fixedly connected between the side plates, and a pushing cylinder is fixedly connected to the moving end of the moving cylinder. The oil quality detector is fixedly installed on the output end of the pushing cylinder.

[0010] The sluice gate includes a frame and a gate plate, the gate plate is arranged on the inner side of the frame, the inner sides of the two side walls of the frame are provided with installation grooves, polyethylene strips are fixedly installed in the installation grooves, and the polyethylene strips are provided with slide grooves. The two sides of the gate plate are inserted into the slide grooves and are slidably connected with the polyethylene strips. A screw is fixedly connected to the top of the gate plate, and the top of the screw extends upward and passes through the frame. A gear box for driving the screw is fixedly installed on the top of the frame, and a motor is connected to the input end of the gear box.

[0011] The drainage pipe section is provided with a second electric valve, and the water inlet pipe section is provided with a first electric valve.

[0012] The annular water tank is arranged in a "U" shape.

[0013] A float is fixedly connected to the water pump.

[0014] The angle between the inner bottom surface of the annular water trough and the bottom end of the annular water trough is 1-5 degrees, and the end of the inner bottom surface of the annular water trough close to the water inlet pipe is higher than the end away from the water inlet pipe.

[0015] Compared with the prior art, the present invention has the following characteristics and beneficial effects: the present invention provides an annular water tank and a sluice gate. After the tail water of the hydropower station enters the annular water tank through a water pump, the tail water can be intermittently retained between the two sluice gates on both sides of the annular water tank by opening and closing the sluice gate, and then the moving cylinder and the pushing cylinder push the detection end of the oil quality detector to be inserted into the tail water retained between the two sluice gates. During this process, the two sluice gates on one side of the annular water tank are closed, and the two sluice gates on the other side are open. Therefore, the water pump can be in a working state all the time, and the tail water in the annular water tank is in a flowing state. Each time the detection is performed, only part of the tail water is intercepted for detection, which avoids the accumulation of part of the oil pollution at the detection point to affect the accuracy. At the same time, the time consumed by repeated water discharge and water intake when measuring water quality multiple times is reduced, which greatly improves the efficiency.

[0016] The present invention enables the oil quality detector to switch and move between the two sides of the annular water tank by setting the moving cylinder and the pushing cylinder, thereby reducing the number of oil quality detectors, realizing the flexible use of the oil quality detectors, and reducing the variables of the detection, further ensuring the accuracy of the detection data;

[0017] The present invention arranges the inclined surface of the inner bottom surface of the annular water tank, and the inclined surface can make the tail water in the annular water tank drain as much as possible during drainage, thereby avoiding the influence of the tail water that has not been drained;

[0018] The present invention uses a water gate to coordinate with the annular water tank to intercept water, and the structural setting of the water gate ensures that water does not leak, thereby ensuring the stability and accuracy of a single detection;

[0019] The present invention makes the water entry depth of the water pump controllable through the arrangement of the track and the slider, thereby reducing detection variables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the annular water tank in the present invention;

[0022] Figure 3 The present invention Figure 2 A partial enlarged view of middle A;

[0023] Figure 4 It is a partial view of a full cross-sectional top view of the frame of the present invention;

[0024] Figure 5 It is a full cross-sectional side view of the annular water tank in the present invention along the BB direction.

[0025] The accompanying drawings are marked as follows: 1. dam body; 2. control console; 10. water pump; 11. float; 12. water inlet pipe; 13. first electric valve; 14. lifting assembly; 141. track; 142. slider; 143. electric hoist; 20. annular water tank; 21. drain pipe; 22. second electric valve; 23. oil quality detector; 30. sluice gate; 31. frame; 311. mounting groove; 32. polyethylene strip; 321. slide; 33. gate plate; 34. screw; 35. gear box; 36. motor; 40. air supply source; 41. side plate; 42. moving cylinder; 43. pushing cylinder. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1-5 As shown, the tailwater monitoring device of a hydropower station in this embodiment includes a dam body 1, an oil quality detector 23 and a control console 2. The oil quality detector 23 is communicatively connected to the control console 2. A communication module is provided on the control console 2, which can transmit data to a cloud service platform or a mobile phone terminal. A lifting assembly 14 is fixedly installed on the dam body 1, a water pump 10 is fixedly connected to the lifting assembly 14, a float 11 is fixedly connected to the water pump 10, and an annular water tank 20 is also included. The annular water tank 20 is in a "U" shape and has an open top. The output end of the water pump 10 is connected to an inlet pipe 12, the top of the inlet pipe 12 is connected to one end of the annular water tank 20, and the end of the annular water tank 20 away from the inlet pipe 12 is connected to a drain pipe 21. One end of the drain pipe 21 discharges the tailwater to a place in the reservoir away from the detection point or outside the reservoir. Two sluice gates 30 are provided on both sides of the annular water tank 20, and a space for intercepting tailwater is provided between the two sluice gates 30. The oil quality detector 23 is provided between the two sluice gates 30.

[0028] Furthermore, the lifting assembly 14 includes a track 141, which is fixedly connected to the dam body 1, a slider 142 is slidably connected to the track 141, the water pump 10 is fixedly installed on the slider 142, and an electric hoist 143 is fixedly connected to the top of the track 141, and the electric hoist 143 is used to drive the slider 142 to move on the track 141.

[0029] Furthermore, an air supply source 40 is provided outside the annular water tank 20, and side plates 41 are fixedly connected on both sides of the annular water tank 20, respectively, and the side plates 41 are respectively arranged between the two water gates 30, and a moving cylinder 42 is fixedly connected between the side plates 41, and a pushing cylinder 43 is fixedly connected to the moving end of the moving cylinder 42, and the oil quality detector 23 is fixedly installed at the output end of the pushing cylinder 43, and the air supply source 40 supplies air to the moving cylinder 42 and the pushing cylinder 43 to drive the moving cylinder 42 and the pushing cylinder 43; the moving cylinder 42 and the pushing cylinder 43 increase the detection efficiency of the oil quality detector 23, avoid the waste of the use of the oil quality detector 23, and also avoid the influence of the detection variables caused by the uneven environmental influence when the oil quality detector 23 is installed in the annular water tank 20 for a long time.

[0030] Furthermore, the sluice gate 30 includes a frame 31 and a gate plate 33. The gate plate 33 is arranged on the inner side of the frame 31. The inner sides of the two side walls of the frame 31 are provided with installation grooves 311. Polyethylene strips 32 are fixedly installed in the installation grooves 311. The polyethylene strips 32 can play a sealing role to prevent water loss between the two sluice gates 30. The polyethylene strips 32 are provided with slide grooves 321. The slide grooves 321 are adapted to the two sides of the gate plate 33. The two sides of the gate plate 33 are inserted into the slide grooves 321 and are slidably connected to the polyethylene strips 32. A screw rod 34 is fixedly connected to the top of the gate plate 33. The top of the screw rod 34 extends upward and passes through the frame 31. A gear box 35 for driving the screw rod 34 to move up and down is fixedly installed on the top of the frame 31. A motor 36 is arranged outside the gear box 35, and the output end of the motor 36 is connected to the input end of the gear box 35.

[0031] Furthermore, a second electric valve 22 is provided on the drain pipe 21 section, and the second electric valve 22 is used for drainage operations. A first electric valve 13 is provided on the water inlet pipe 12 section; the second electric valve 22 and the first electric valve 13 are both electrically connected to the console 2.

[0032] Furthermore, the angle between the inner bottom surface of the annular water tank 20 and the bottom end of the annular water tank 20 is 1-5 degrees, the end of the inner bottom surface of the annular water tank 20 close to the water inlet pipe 12 is higher than the end away from the water inlet pipe 12, the bottom ends of the frame 31 and the gate plate 33 are adapted to the inner bottom surface of the annular water tank 20, and the inclined setting of the inner bottom surface of the annular water tank 20 ensures that there is no residual technology in the space between the two water gates on both sides of the annular water tank 20, thereby reducing the variables of the detection and making the detection more accurate.

[0033] The working principle of the present invention is as follows: start the electric hoist 143, lower the slider 142 into the water along the track 141, start the water pump 10, and the tail water enters the annular water tank 20 through the water pump 10 and the water inlet pipe 12. Figure 2For example), close the water gates 30 at the lower left and lower right corners, and when the water level in the annular water tank 20 reaches a predetermined height, close the water gate 30 at the upper right corner, open the water gate 30 at the lower left corner, and then move the cylinder 42 to the right, push the cylinder 43 to push the oil quality detector 23 to contact with water to detect the parameters of the water, the staff records the parameters of the oil quality detector 23 or the oil quality detector 23 transmits the data to the console 2, the console 2 transmits the data to the cloud service platform or the mobile phone terminal through the communication module, and then close the water gate 30 at the lower left corner, and when the water level in the annular water tank 20 reaches a predetermined height, close the water gate 30 at the upper left corner, open the two water gates 30 on the right, and then move the cylinder 42 to the left to push the cylinder 43 to push the oil quality detector 23 to contact with water to detect the parameters of the water, and repeat this process.

[0034] In the invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the invention according to the specific circumstances.

[0035] Although embodiments of the invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tailwater monitoring device for a hydropower station, comprising a dam body (1), an oil quality detector (23) and a control console (2), wherein the oil quality detector (23) is communicatively connected to the control console (2), a lifting assembly (14) is fixedly mounted on the dam body (1), and a water pump (10) is arranged on the lifting assembly (14), characterized in that: It also comprises an annular water trough (20), the output end of the water pump (10) is connected to a water inlet pipe (12), the top end of the water inlet pipe (12) is connected to one end of the annular water trough (20), one end of the annular water trough (20) away from the water inlet pipe (12) is connected to a drain pipe (21), two water gates (30) are arranged on both sides of the annular water trough (20), and the oil quality detector (23) is arranged between the two water gates (30); Side plates (41) are fixedly connected to both sides of the annular water tank (20), and the side plates (41) are respectively arranged between the two water gates (30). A moving cylinder (42) is fixedly connected between the side plates (41), and a pushing cylinder (43) is fixedly connected to the moving end of the moving cylinder (42), and the oil quality detector (23) is fixedly installed at the output end of the pushing cylinder (43); The water gate (30) comprises a frame (31) and a gate plate (33), wherein the gate plate (33) is arranged on the inner side of the frame (31), and the inner sides of the two side walls of the frame (31) are provided with mounting grooves (311), and a polyethylene strip (32) is fixedly installed in the mounting groove (311), and a slide groove (321) is provided on the polyethylene strip (32), and the two sides of the gate plate (33) are inserted into the slide groove (321) and are slidably connected to the polyethylene strip (32), and a screw rod (34) is fixedly connected to the top of the gate plate (33), and the top of the screw rod (34) extends upward and passes through the frame (31), and a gear box (35) for driving the screw rod (34) is fixedly installed on the top of the frame (31), and the input end of the gear box (35) is connected to a motor (36); The angle between the inner bottom surface of the annular water trough (20) and the bottom end of the annular water trough (20) is 1-5 degrees, and the end of the inner bottom surface of the annular water trough (20) close to the water inlet pipe (12) is higher than the end away from the water inlet pipe (12).

2. A hydropower station tailwater monitoring device according to claim 1, characterized in that: The lifting assembly (14) comprises a track (141), a slider (142) is slidably connected to the track (141), the water pump (10) is fixedly mounted on the slider (142), and an electric hoist (143) is fixedly connected to the top of the track (141), and the electric hoist (143) is used to drive the slider (142) to move on the track (141).

3. A hydropower station tailwater monitoring device according to claim 1, characterized in that: The drainage pipe (21) section is provided with a second electric valve (22), and the water inlet pipe (12) section is provided with a first electric valve (13).

4. A hydropower station tailwater monitoring device according to claim 1, characterized in that: The annular water tank (20) is arranged in a "U" shape.

5. A hydropower station tailwater monitoring device according to claim 1, characterized in that: A float (11) is fixedly connected to the water pump (10).

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