Cascade hydropower group water level prediction device

Abstract

The utility model discloses a cascade hydropower group water level prediction device, and relates to water level detection. The device comprises a transverse plate and a supporting plate for supporting the transverse plate, a winding disc, a winding detector and a floating plate capable of sliding up and down are installed on the supporting plate, the floating plate is connected with a pulling belt, and the redundant part of the pulling belt is wound in the winding disc; a motor is installed on the transverse plate, the output end of the motor is downwards connected with a transmission screw, the transmission screw is sleeved with a measuring instrument, flow velocity fan blades are installed at the bottom end of the measuring instrument, and the measuring instrument is used for measuring the rotating speed of the flow velocity fan blades; a cleaning net belt is further arranged beside the flow velocity fan blades. By arranging the cleaning net belt and the rotating fan blades, when water flow is detected, impurities in water can be intercepted through the cleaning net belt, the impurities are prevented from entering the space between the flow speed fan blades and the lantern ring, the rotating fan blades are driven to rotate through the water flow, and therefore the cleaning net belt is driven to rotate, the impurities are discharged from the edge of the cleaning net belt, and the water flow detection efficiency is improved. And the water flow passing speed is kept.

Description

Technical Field

[0001] The utility model relates to the field of water level monitoring, in particular to a water level prediction device for a cascade hydropower group. Background Art

[0002] Starting from the upper reaches of the river, a series of water conservancy hubs are planned from top to bottom, one river section after another, in a stepped distribution form. This development method is called cascade development. The water level refers to the elevation of the free water surface relative to a certain base surface. The distance from the water surface to the river bottom is called the water depth. The elevation of a specific point can also be used as a reference to calculate the zero point of the water level, which is called the measuring station base surface. When predicting the water level of a reservoir, it is necessary to monitor the water flow into the reservoir. During the detection process, an alarm mechanism will be used at the water inlet to warn of the water level and water flow rate.

[0003] In the prior art, CN217058990U discloses a water level detector for reservoir water level warning display, including a floating plate, three support rods are slidably installed in a ring at equal angles around the floating plate, a movable groove is opened in the middle of the support rod, and an alarm sensor is fixedly installed on the upper end of the support rod located at the top of the movable groove, and a scraper is fixedly installed at the bottom of the floating plate at the connection between the support rods, a detection rod is slidably installed in the middle of the floating plate, sliding grooves are opened on both sides of the upper end of the detection rod, and a corrugated tube is movably sleeved on the upper end of the detection rod, the top of the floating plate is located at the internal bearing of the detection rod connected to a miniature camera, the top of the floating plate is located inside the detection rod and a cleaning cotton is fixedly installed, and a scale is provided on one side of the inner cavity of the upper end of the detection rod.

[0004] Although the above-mentioned water level detector can float the prediction device through the floating board, the water surface usually has fluctuations. During the flow of water, the water flow will cause the floating board to swing up and down, which will affect the water level detection effect. Secondly, during the detection process, there are a large number of impurities on the water surface. If the impurities accumulate on the outside of the floating board, it is easy to cause the floating board to move up and down inconveniently, affecting the detection. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a water level prediction device for a cascade hydropower group to solve the technical problems of water surface fluctuations and impurities on the water surface being easily accumulated on the outside of the floating plate.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A water level prediction device for a cascade hydropower group, comprising a horizontal plate, the bottom end of which is connected to two support plates, the bottom end of which is fixed underwater, and the top end of which and the horizontal plate are exposed above the water surface;

[0008] Each of the support plates is provided with a vertical slide groove, a floating plate is slidably mounted on the slide groove, a winding disk and a winding detector for detecting the rotation of the winding disk are mounted on the top of the support plate, a pulling belt is wound on the winding disk, and one end of the pulling belt is fixed to the floating plate;

[0009] A motor is installed on the horizontal plate, the output end of the motor is connected to a transmission screw located below the horizontal plate and vertically arranged, a measuring instrument is threadedly connected to the transmission screw, a flow velocity fan blade is installed at the bottom end of the measuring instrument, and the measuring instrument is used to measure the rotation speed of the flow velocity fan blade;

[0010] The winding detector is connected to the motor through a connecting line and transmits the rotation signal of the winding disk to the motor. The motor is used to drive the transmission screw to rotate synchronously according to the rotation signal of the winding disk, so that the measuring instrument is always located at the water level.

[0011] In a preferred solution, the measuring instrument includes a measuring instrument housing, a speed detector is fixed inside the measuring instrument housing, the input end of the speed detector is connected to the output end of the flow velocity fan blade through a conveyor belt transmission; the speed detector is also connected to a wire, and the wire is used to transmit the data collected by the speed detector to the outside world.

[0012] In a preferred solution, a winding drum is fixed on the transverse plate, the output end of the motor is connected to the rotating shaft of the winding drum through a transmission gear set, and the conducting wire is wound on the outer wall of the winding drum.

[0013] In a preferred solution, the rotating shaft of the velocity fan blade is fixedly connected to a transmission rod, a connecting sleeve is fixedly sleeved on the outer side of the transmission rod, and the conveyor belt is transmission-connected to the transmission rod via the connecting sleeve.

[0014] In the preferred solution, two transmission shafts are installed at the bottom end of the measuring instrument, and cleaning belts are sleeved on the two transmission shafts. The transmission shafts are transmission-connected to the cleaning belts, and a rotating fan blade is fixed to the bottom end of one of the transmission shafts, and the cleaning belt faces the water inlet side of the flow rate fan blade.

[0015] In a preferred solution, two vertical positioning rods are fixedly installed on the bottom surface of the horizontal plate, and the measuring instrument is slidably connected to the positioning rods. The positioning rods are the same length as the transmission screw.

[0016] In a preferred embodiment, the measuring instrument is provided with two measuring instrument slide grooves and one thread groove, and the measuring instrument slide groove and the thread groove are both connected vertically. The measuring instrument slide groove is used to realize the sliding connection between the measuring instrument and the positioning rod, and the thread groove is used to realize the threaded connection between the measuring instrument and the transmission screw.

[0017] In a preferred solution, a collar is fixedly mounted on the bottom end of the measuring instrument, the collar is coaxial with the flow velocity blade and surrounds the flow velocity blade, and the flow velocity blade is rotatably connected to the measuring instrument via the collar.

[0018] In a preferred solution, the floating board is equipped with an air bag.

[0019] In a preferred solution, a torsion spring and a transmission shaft are installed inside the winding drum, the transmission shaft is connected to the input end of the winding detector, and the torsion spring is used to automatically tighten the pulling belt.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] 1. The utility model is provided with a floating plate, a winding disk, a winding detector and a motor. When the water level changes, the height of the floating plate changes, so that the winding disk automatically winds the pulling belt under the action of its own torsion spring. At the same time, the winding detector detects the rotation of the winding disk. At the same time, the motor is controlled by the winding detector to drive the transmission screw to rotate. The transmission screw drives the measuring instrument to change its height as the water level changes, so that the measuring instrument is always located at the water level surface, which can improve the detection effect and avoid the measuring instrument being completely immersed in water. The measuring instrument can be limited by the transmission screw and the positioning rod to avoid the measuring instrument fluctuating with the water flow.

[0022] 2. The utility model can intercept impurities in the water through the cleaning mesh belt and rotating blades when detecting the water flow, so as to prevent the impurities from entering between the flow blades and the ring. The rotating blades are driven by the water flow to rotate, thereby driving the cleaning mesh belt to rotate, and the impurities are discharged from the edge of the cleaning mesh belt, thereby maintaining the speed of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the measuring instrument of the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the cross section of the measuring instrument of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure inside the sleeve ring of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the floating board of the utility model.

[0028] In the figure: 1. horizontal plate; 101. motor; 102. transmission gear set; 103. take-up drum; 104. transmission screw; 105. positioning rod; 2. support plate; 3. measuring instrument; 301. measuring instrument slide; 302. wire; 303. thread groove; 304. rotating fan blade; 305. cleaning mesh belt; 306. ring; 307. conveyor belt; 308. speed detector; 4. take-up reel; 5. take-up detector; 6. flow rate fan blade; 601. transmission rod; 7. floating plate; 701. air bag; 702. pulling belt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] Water level prediction device for cascade hydropower groups, such as Figure 1 As shown, it includes a transverse plate 1, and two groups of support plates 2 are connected to the bottom end of the transverse plate 1, each group of support plates 2 is fixed underwater, a winding disk 4 and a winding detector 5 are installed on the top of the support plate 2, and a floating plate 7 is installed inside the support plate 2; a pulling belt 702 is connected to the top of the floating plate 7, and the pulling belt 702 is connected to the winding disk 4, and the height of the floating plate 7 can be detected by the winding detector 5, and a motor 101 is installed on the top of the transverse plate 1, and the output end of the motor 101 is connected downwardly with a transmission screw 104, and the outer side of the transmission screw 104 is sleeved with a measuring instrument 3, and the height of the measuring instrument 3 can be adjusted and controlled by the motor 101; the measuring instrument 3 includes a measuring instrument housing, a flow velocity fan blade 6 is installed at the bottom end of the measuring instrument housing, and a speed detector 308 is installed inside the measuring instrument housing for detecting the speed of the flow velocity fan blade 6, and the input end of the speed detector 308 is connected to the output end of the flow velocity fan blade 6 through a conveyor belt 307.

[0032] See also Figure 1 The utility model is further configured as follows: a transmission gear set 102 is connected to the outer side of the output end of the motor 101, and a winding drum 103 is connected to the output end of the transmission gear set 102. The winding drum 103 is located at the top of the horizontal plate 1. A wire 302 is installed inside the measuring instrument 3. One end of the wire 302 is connected to the speed detector 308, and the other end of the wire 302 extends to the top of the horizontal plate 1 and is wound on the outer wall of the winding drum 103, so that the wire 302 can be wound by the winding drum 103.

[0033] By adopting the above technical solution, the motor 101 can drive the transmission screw 104 to rotate while driving the winding drum 103 to rotate synchronously, and the wire 302 can transmit the data collected by the measuring instrument to the outside world.

[0034] See also Figure 1 and Figure 2 The utility model is further configured as follows: the bottom end of the horizontal plate 1 is located on both sides of the transmission screw 104 and is equipped with two vertically arranged positioning rods 105, the positioning rods 105 are the same length as the transmission screw 104, and two measuring instrument slide grooves 301 and a thread groove 303 are installed inside the measuring instrument 3, the measuring instrument slide grooves 301 and the thread grooves 303 are both through-connected from top to bottom, the two measuring instrument slide grooves 301 are respectively sleeved on the outer sides of the two positioning rods 105, the thread grooves 303 are transmission-connected with the transmission screw 104, so as to facilitate the up and down movement of the measuring instrument 3.

[0035] By adopting the above technical solution, the measuring instrument 3 can be stabilized by the two sets of positioning rods 105 , and the transmission screw 104 , the positioning rod 105 and the measuring instrument 3 can be conveniently connected.

[0036] See also Figure 2 and Figure 3 The utility model is further configured such that a cleaning mesh belt 305 is installed at the bottom end of the measuring instrument 3 in front of the flow velocity blade 6, and the cleaning mesh belt 305 is fixedly installed by two transmission shafts, and the transmission shafts are transmission-connected to the cleaning mesh belt 305, and a rotating blade 304 is fixed to the bottom end of one of the transmission shafts, and the cleaning mesh belt 305 faces the water inlet side of the flow velocity blade 6.

[0037] By adopting the above technical solution, impurities in the water flow can be filtered by cleaning the mesh belt 305.

[0038] See also Figure 3 and Figure 4 The utility model is further configured such that the bottom end of the measuring instrument 3 is located on the periphery of the flow velocity blade 6 and is sleeved with a collar 306 , the collar 306 is coaxial with the flow velocity blade 6 , and the flow velocity blade 6 is rotatably connected to the measuring instrument 3 via the collar 306 .

[0039] By adopting the above technical solution, the flow velocity blade 6 can be protected by the collar 306 .

[0040] See also Figure 4 The utility model is further configured such that the end of the velocity blade 6 is connected to a transmission rod 601, a connecting sleeve is installed on the outer side of the transmission rod 601, and the conveyor belt 307 is connected to the transmission rod 601 through the connecting sleeve.

[0041] By adopting the above technical solution, the transmission rod and the conveyor belt can be driven to rotate by the flow velocity blades.

[0042] See also Figure 5 The utility model is further configured such that an air bag 701 is installed on the outer side of the floating board 7 .

[0043] By adopting the above technical solution, the floating board 7 can always float on the water surface through the airbag 701.

[0044] During use, the prediction device is first installed underwater, first the horizontal plate 1 is connected to each group of support plates 2, the floating plate 7 is installed in the slide groove inside the support plate 2, and the floating plate 7 is connected to the winding disk 4 through the pulling belt 702. The winding disk 4 is installed with a torsion spring and a transmission shaft, and the transmission shaft is connected to the winding detector 5. The winding detector 5 is connected to the motor 101 through a connecting line. When the floating plate 7 moves upward, the motor 101 drives the measuring instrument 3 to move synchronously with the floating plate 7 through the transmission screw 104, so that the measuring instrument 3 is always located at the water level, improving the detection effect. It should be noted that the measuring instrument 3 is located at the water level, which means that the entire measuring instrument housing and the speed detector 308 inside it are located above the water surface, while the flow velocity fan blade 6 installed at the lower end of the measuring instrument are located below the water surface.

[0045] During the detection, the water flow will pass through the collar 306, driving the flow velocity blade 6 in the collar 306 to rotate, and the flow velocity blade 6 drives the conveyor belt 307 to rotate through the transmission rod 601, and the conveyor belt 307 drives the output end of the speed detector 308 to transmit, so as to detect the flow velocity of the water flow, and transmit the detected data to the outside through the wire 302, so that the flow velocity and water level height of the water flow can be detected synchronously. After comprehensive calculation, the water flow rate can be obtained, so as to monitor the speed of water level rise in the subsequent cascade hydropower group, so as to predict the water level of the cascade hydropower group;

[0046] At the same time, during the detection process, impurities in the water will adhere to the cleaning mesh belt 305 with the water flow. At this time, the water flow will also drive the rotating fan blades 304 to rotate, and the rotating fan blades 304 will drive the cleaning mesh belt 305 to rotate, thereby driving the impurities to be discharged from the side of the cleaning mesh belt 305, reducing the impurities clogging the flow velocity fan blades 6 and the inside of the ring 306, thereby improving the cleanliness of the device.

[0047] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A water level prediction device for a cascade hydropower station group, comprising a horizontal plate (1), characterized in that: The bottom end of the horizontal plate (1) is connected to two support plates (2), the bottom ends of the support plates (2) are fixed underwater, and the top ends of the support plates (2) and the horizontal plate (1) are above the water surface; Each of the support plates (2) is provided with a vertical slide groove, on which a floating plate (7) is slidably mounted, a winding disk (4) and a winding detector (5) for detecting the rotation of the winding disk are mounted on the top of the support plate (2), a pulling belt (702) is wound on the winding disk (4), and one end of the pulling belt is fixed to the floating plate (7); A motor (101) is mounted on the horizontal plate (1); an output end of the motor (101) is connected to a transmission screw (104) located below the horizontal plate and arranged vertically; a measuring instrument (3) is threadedly connected to the transmission screw (104); a flow velocity blade (6) is mounted at the bottom end of the measuring instrument (3); and the measuring instrument (3) is used to measure the rotation speed of the flow velocity blade (6); The winding detector (5) is connected to the motor (101) via a connecting line and transmits the rotation signal of the winding reel to the motor (101). The motor (101) is used to drive the transmission screw (104) to rotate synchronously according to the rotation signal of the winding reel, so that the measuring instrument (3) is always located at the water level.

2. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: The measuring instrument (3) comprises a measuring instrument housing, a rotation speed detector (308) is fixed inside the measuring instrument housing, an input end of the rotation speed detector (308) is connected to an output end of the flow velocity fan blade (6) via a conveyor belt (307); the rotation speed detector (308) is also connected to a wire (302), and the wire (302) is used to transmit data collected by the rotation speed detector (308) to the outside.

3. The water level prediction device for cascade hydropower stations according to claim 2, characterized in that: A winding drum (103) is fixed on the transverse plate (1), the output end of the motor (101) is connected to the rotating shaft of the winding drum (103) via a transmission gear set (102), and the conducting wire (302) is wound on the outer wall of the winding drum (103).

4. The water level prediction device for cascade hydropower stations according to claim 2, characterized in that: The rotating shaft of the velocity fan blade (6) is fixedly connected to a transmission rod (601), a connecting sleeve is sleeved and fixed on the outer side of the transmission rod (601), and the conveyor belt (307) is transmission-connected to the transmission rod (601) via the connecting sleeve.

5. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: Two transmission shafts are installed at the bottom end of the measuring instrument (3), and cleaning mesh belts (305) are sleeved on the two transmission shafts. The transmission shafts are connected to the cleaning mesh belts (305) in a transmission manner. A rotating fan blade (304) is fixed to the bottom end of one of the transmission shafts, and the cleaning mesh belt (305) faces the water inlet side of the flow rate fan blade (6).

6. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: Two vertical positioning rods (105) are fixedly mounted on the bottom surface of the horizontal plate (1), and the measuring instrument (3) is slidably connected to the positioning rods (105). The positioning rods (105) are the same length as the transmission screw rod (104).

7. The water level prediction device for cascade hydropower stations according to claim 6, characterized in that: The measuring instrument (3) is provided with two measuring instrument slide grooves (301) and a thread groove (303), and the measuring instrument slide grooves (301) and the thread groove (303) are both connected vertically, and the measuring instrument slide groove (301) is used to realize the sliding connection between the measuring instrument (3) and the positioning rod (105), and the thread groove (303) is used to realize the threaded connection between the measuring instrument (3) and the transmission screw (104).

8. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: A collar (306) is fixedly mounted on the bottom end of the measuring instrument (3); the collar (306) is coaxial with the flow velocity blade (6) and surrounds the flow velocity blade (6); the flow velocity blade (6) is rotatably connected to the measuring instrument (3) via the collar (306).

9. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: The floating board (7) is equipped with an air bag (701).

10. The water level prediction device for cascade hydropower stations according to claim 1, characterized in that: A torsion spring and a transmission shaft are installed inside the winding disk (4), the transmission shaft is connected to the input end of the winding detector (5), and the torsion spring is used to automatically tighten the pulling belt (702).

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