Reservoir water release control device

Abstract

The present invention discloses a reservoir water discharge control device, comprising a bend, a discharge valve, a control mechanism, and a drive mechanism; the bend is arranged on the inclined surface of the dam slope in the reservoir water storage area, the outlet end of the bend is connected to the downstream of the dam, the water inlet end of the bend is connected to the discharge valve, the discharge valve comprises a valve plate, the valve plate is connected to the control mechanism, and the control mechanism is connected to the drive mechanism; the valve plate can open or close the water inlet end of the bend under the action of the control mechanism and the drive mechanism, and the movement direction of the valve plate is parallel to the inclined surface of the dam. The valve plate of the reservoir water discharge control device of the present invention is arranged at an angle. Compared with the vertically arranged flat steel gate in the prior art, the inclined valve plate is subjected to less pressure, the valve plate is not easily deformed, and opening the valve port is more labor-saving; the control mechanism enables the valve plate to have more power in the process of closing the valve port, which can increase the speed of closing the valve port and improve the sealing performance of the valve port.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and in particular to a reservoir water release control device. Background Art

[0002] Reservoir water level control is an important part of reservoir operation, and the main method of controlling the reservoir water level is to open and close the drain valve. Existing drain valves are mainly lifting gates, which are driven by a vertical drive mechanism to lift and lower the flat steel gates to open and close the gates. However, existing flat steel gates are usually set vertically on the drain outlets. The flat steel gates are guided and sealed by the gate grooves on both sides of the drain outlet. The vertically set flat steel gates are greatly affected by the water pressure, which makes the gate grooves and the flat steel gates easily deformed, resulting in the gates not being sealed when closed, causing water leakage in the reservoir. Stones are easily deposited at the bottom of the drain outlet, which will block the downward movement of the flat steel gates and also cause water leakage in the reservoir. In addition, when the water level in the reservoir is too high, the gate grooves are subjected to very high pressure from the flat steel gates. Especially during the flood season when the water level is high, the flat steel gates may not be able to operate due to insufficient opening and closing force due to the high water pressure.

[0003] After searching, the existing application number is 201821347298.3, and the invention name is a patent for a reservoir water discharge gate valve with a steel cable lifting bearing sliding valve core. The steel cable is pulled by the opening and closing mechanism, and the steel cable pulls the valve core to achieve water discharge. The gate valve with this structure slides downward to seal the gate hole because the valve core only relies on its own gravity. The weight of the valve core itself is limited. In addition, the friction between the valve core and the stainless steel track and the buoyancy of the water restricts the return of the valve core. There is a problem that the valve core does not close the gate hole tightly, and it may even be unable to return to the gate hole position by its own weight. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a reservoir water release control device, which drives the valve plate through a control mechanism. There is corresponding driving force during the opening and closing process of the valve plate, ensuring that the valve plate can close the valve port and has good sealing after closing.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A reservoir water discharge control device comprises a bend, a discharge valve, a control mechanism and a drive mechanism; the bend is arranged on the inclined surface of the dam slope in the reservoir water storage area, the water outlet end of the bend is connected to the downstream of the dam, and the water inlet end of the bend is connected to the discharge valve; the discharge valve comprises a valve plate and a guide cage, the guide cage is obliquely connected to the water inlet end of the bend, the valve plate is slidably arranged in the guide cage, the valve plate is connected to the control mechanism, and the control mechanism is connected to the drive mechanism; the valve plate slides up and down in the guide cage under the action of the control mechanism and the drive mechanism, and can open or close the water inlet end of the bend, and the inclination direction of the guide cage and the movement direction of the valve plate are both parallel to the inclined surface of the dam.

[0007] The working principle of the above-mentioned reservoir water release control device is:

[0008] When the reservoir water level is above the control level, the drive mechanism drives the control mechanism to drive the valve plate upward along the dam's slope, opening the water inlet of the elbow. Water in the reservoir enters the elbow through the valve port at the inlet end and is discharged downstream of the dam. When the reservoir water level is below the control level, the drive mechanism drives the control mechanism to drive the valve plate downward along the dam's slope. The valve plate gradually approaches the valve port and finally engages with it, closing it. The inclined valve plate allows the device to open smoothly when the water level is too high without overloading the device. Closing the valve plate also saves effort due to the control mechanism, its own weight, and the thrust of the water.

[0009] Furthermore, the driving mechanism includes a wire rope and a winch. The winch is arranged in the opening and closing chamber of the dam. There is only one wire rope, which is spirally wound on the winch. The two ends of the wire rope are respectively extended from the winch and connected to the control mechanism.

[0010] When the winch is working, one end of the wire rope will be wound and the other end will be loosened. The opening and closing of the valve port can be achieved through the different rotation directions of the winch.

[0011] Furthermore, the control mechanism includes a support, a push-pull rod, a connecting rod, an opening and closing rod and two pull rods. The support is fixed on the dam, and the middle part of the opening and closing rod is hinged on the support; one end of the push-pull rod is fixedly connected to the valve plate, the other end of the push-pull rod is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the opening and closing rod; one end of one of the pull rods is hinged to an end of the opening and closing rod close to the connecting rod, and the other end of the pull rod is connected to one end of the steel wire rope; one end of the other pull rod is hinged to an end of the opening and closing rod away from the connecting rod, and the other end of the pull rod is connected to the other end of the steel wire rope.

[0012] Because the valve disc is tilted, the force of its own weight causes it to tilt downward. Furthermore, because the valve opening is also tilted upward, when water is released, the water flows downward through the valve opening. The suction force and pressure of the water flow through the valve opening also cause the disc to tilt downward. By configuring a push-pull rod, a connecting rod, an opening and closing rod, and two pull rods, the winch's rotation to close the valve opening is driven not only by the weight of the valve disc and the water, but also by the push-pull rods. The pull rods are stainless steel tubes connected to the winch's wire rope. Transmitting force through the stainless steel tube effectively reduces unstable valve opening control caused by elastic deformation of the wire rope. The two pull rods improve the precision of valve opening control.

[0013] Furthermore, stoppers are installed at both ends of the support's top to limit the opening and closing lever. The lever, a lever structure, converts the pull of the winch into a pull to open the valve and a pressure to close it. This lever controls the valve opening and adjusts the water discharge flow. A limiter is installed on the lever track. The lever rotates within the range set by the track and the stoppers, protecting the drain valve and ensuring that the valve is closed.

[0014] Furthermore, a plurality of first support and guide assemblies for supporting and guiding the pull rod, and a plurality of second support and guide assemblies for supporting and guiding the wire rope are provided between the winch and the support.

[0015] Furthermore, it also includes a discharge seat, which is buried at the dam foot and has a discharge culvert for water to flow inside the discharge seat; a water inlet and a water outlet are provided on the discharge seat, the outlet end of the bent pipe is connected to the water inlet of the discharge seat, and the outlet of the discharge seat is connected to the drainage culvert, which leads to the downstream of the reservoir; the support is fixed on the discharge seat.

[0016] By setting up the drain seat, it is easier to install the elbow and control mechanism, and it is also more conducive to drainage.

[0017] Furthermore, it also includes an exhaust pipe, one end of which is connected to the drainage culvert and the other end of which extends upward along the dam slope to connect to the atmosphere. The exhaust pipe balances the air pressure inside the drainage culvert and facilitates drainage.

[0018] Furthermore, stainless steel trash racks are arranged around the drain seat to block impurities in the reservoir and prevent them from clogging the valve port.

[0019] Furthermore, the guide cage includes a first flange, a second flange and multiple guide rods. The water inlet end of the bent pipe is provided with a mounting flange. Each flange is provided with guide rod through-holes the same number as the guide rods, and the edge of the valve plate is provided with guide grooves that slide with the guide rods. The first flange is arranged on the mounting flange, and one end of the multiple guide rods is passed through the first flange and the guide rod through-holes of the mounting flange and then fixed by nuts. The water inlet end of the bent pipe forms the valve port of the drain valve, and the other end of the guide rod is respectively passed through the guide groove of the valve plate and the guide rod through-holes of the second flange and then fixed by nuts.

[0020] The guide cage plays the role of installing the valve plate and filtering at the same time, which can block impurities. Because the drain valve is at a certain distance from the dam bottom, it is not easy for stones to accumulate around the drain valve, which can ensure that the valve plate and the valve port fit tightly.

[0021] Furthermore, a protrusion that cooperates with the valve port is provided on one side of the valve plate close to the valve port, and a number of reinforcing ribs are provided on the other side of the valve plate. The several reinforcing ribs gather toward the center of the gate plate. A mounting hole for the push-pull rod to pass through is opened in the center of the valve plate. The push-pull rod passes through the valve plate and is fixedly connected to the valve plate.

[0022] The valve plate as a whole has a pot-cover structure. Since the valve plate and the valve port are arranged at an angle, the valve plate is subjected to less pressure and is not easily deformed. Opening the valve port is more labor-saving and will not cause overload operation of the control mechanism.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The valve plate of the reservoir water release control device of the present invention is set at an angle. Compared with the vertically arranged flat steel gate in the prior art, the inclined valve plate is subjected to less pressure, the valve plate is not easy to deform, and opening the valve mouth is more labor-saving; when the reservoir water level is too high, the valve mouth is opened very smoothly without causing the driving mechanism to overload, and the water release valve can be opened smoothly. The present invention is applicable to various terrains.

[0025] 2. The reservoir water discharge control device of the present invention incorporates a control mechanism that provides the valve plate with additional power during the closing process. This power is derived from the weight of the valve plate itself, the suction force of the water flow at the valve port, and the water pressure. More importantly, it is driven by the push-pull rods and other components within the control mechanism. This increases the speed of closing the valve port and improves the sealing performance. The power-driven closing and opening of the valve is more reliable than conventional gate closing methods that rely on the deadweight of the gate. This advantage is particularly pronounced in deeper reservoirs.

[0026] 3. The present invention provides a pull rod and a steel wire rope, which can avoid the problem in the prior art that the valve opening cannot be accurately controlled due to the complete use of steel wire ropes.

[0027] 4. The device has a simple structure, and the driving mechanism is set on the top of the dam slope. It is easy to operate and does not require the setting of hydraulic structures such as working trestle and gate well. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The main structure of the present invention is shown.

[0029] Figure 2 The top view of the structure of the present invention is shown.

[0030] Figure 3 The stainless steel trash racks installed around the drain seat are shown.

[0031] Figure 4 The structure of the support is shown.

[0032] Figure 5 The specific structure of the control mechanism is shown.

[0033] Figure 6 The connection structure between the elbow and the drain valve is shown.

[0034] Figure 7 The structure of the valve plate is shown.

[0035] Figure 8 The cross-sectional structure of the valve plate is shown.

[0036] Figure 9 The structure of the first flange is shown.

[0037] Figure 10 The structure of the second flange is shown.

[0038] Figure 11 The structure of the guide rod is shown.

[0039] Figure 12 The structure of the sealing film is shown.

[0040] Figure 13 The structure of the drive mechanism is shown.

[0041] Figure 14 The structure of the valve port is shown.

[0042] In the attached figure: 1, drain seat, 2, elbow, 2-1, mounting flange, 3, drainage culvert, 4, drain valve, 4-1, guide cage, 4-11, first flange, 4-12, second flange, 4-121, guide hole, 4-13, guide rod, 4-14, nut, 4-2, valve plate, 4-21, guide groove, 4-22, protrusion, 5, control mechanism, 5-1, support, 5-2, push-pull rod, 5-3, connecting rod, 5-4, Opening and closing rod, 5-5, winch, 5-6, pull rod, 5-7, wire rope, 6, drain culvert, 9, valve mouth, 10, sealing film, 11, limit block, 12, first support and guide assembly, 12-1, pull rod pier, 12-2, pull rod guide wheel, 13, second support and guide assembly, 13-1, wire rope pier, 13-2, wire rope guide wheel, 14, opening and closing chamber, 15, dam, 16, dam slope, 17, exhaust pipe. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0044] Example 1

[0045] like Figures 1-4A reservoir water discharge control device includes a discharge seat 1, an elbow 2, a drainage culvert 3, a discharge valve 4, a control mechanism 5, and a drive mechanism; the discharge seat 1 is set at the dam foot, the discharge seat 1 is made of concrete, the discharge seat structure is relatively small, and the requirements for the foundation bearing capacity are not high. The workload of cofferdam and foundation construction during construction is relatively small. The interior of the discharge seat 1 has a water-passing cavity, called a discharge culvert 6; the discharge seat 1 is provided with a water inlet and a water outlet, the elbow 2 is connected to the water inlet of the discharge seat 1, and is connected to the water storage area of ​​the reservoir, the drainage culvert 3 is connected to the water outlet of the discharge seat 1, and the drainage culvert 3 leads to the downstream of the reservoir. The water in the water storage area of ​​the reservoir passes through the elbow and the discharge seat and is discharged from the drainage culvert to the downstream of the reservoir.

[0046] like Figure 6 、 14 As shown, the drain valve 4 is arranged at the water inlet end of the elbow, and the water inlet end of the elbow 2 is provided with a mounting flange 2-1.

[0047] like Figure 4 、 5 As shown in Figures 6 and 14, the drain valve 4 includes a guide cage 4-1 and a valve plate 4-2 slidably arranged on the guide cage 4-1. The guide cage 4-1 is installed on the mounting flange 2-1 of the elbow 2, so that the valve port 9 is formed at the water inlet end of the elbow 2.

[0048] like Figure 6 As shown, the guide cage 4-1 includes a first flange 4-11, a second flange 4-12 and a plurality of guide rods 4-13, and the water inlet end of the elbow 2 is provided with a mounting flange 2-1. Figure 9 、 10 Each flange is provided with the same number of guide rod holes as the guide rods, and the guide rod holes are evenly distributed along the circumference of the corresponding flange, such as Figure 7 、 8 The edge of the valve plate 4-2 is provided with a guide groove 4-21 that slides with the guide rod 4-13. The first flange 4-11 is set on the mounting flange 2-1. One end of the multiple guide rods 4-13 passes through the first flange 4-11 and the guide rod perforation of the mounting flange 2-1 and is fixed by the nut 4-14. The other ends of the guide rods 4-13 pass through the guide groove 4-21 of the valve plate 4-2 and the guide rod perforation of the second flange 4-12 and are fixed by the nut 4-14. By adopting the above structure, the nut 4-14 can achieve the fixation of the first flange 4-11, the second flange 4-12, the guide rod 4-13 and the mounting flange 2-1. The valve plate 4-2 can slide on the guide rod 4-13, and the guide rod 4-13 plays a good guiding role. The multiple guide rods 4-13 are distributed along the circumferential direction to ensure the stability of the structure. At the same time, it can also make the guide cage 4-1 form a cage structure to block impurities.

[0049] like Figure 6 、 11The number of guide rods 4-13 is 12, and the corresponding number of guide grooves 4-21 is also 12, and the guide grooves 4-21 are U-shaped grooves.

[0050] like Figure 12 A sealing rubber sheet 10 is provided between the first flange 4-11 and the mounting flange 2-1 to improve the sealing performance between the two flanges. The sealing rubber sheet 10 and the first flange 4-11 have the same shape, but are made of different materials: rubber, while the first flange 4-11 is made of steel. To further improve the airtightness of the valve port 9, a sealing rubber ring is attached to the side of the first flange 4-11 closest to the valve plate 4-2, or to the side of the valve plate 4-2 closest to the first flange 4-11. This provides a better seal when the valve port 9 is closed.

[0051] like Figure 8 and Figure 14 The valve plate 4-2 is provided with a protrusion 4-22 that cooperates with the valve port 9. By providing the protrusion 4-22, the sealing performance is further improved. The shape of the valve plate 4-2 is similar to a pot cover, and the valve port 9 is opened and closed to achieve the water release effect.

[0052] like Figure 3-5 The control mechanism 5 controls the valve plate 4-2 to slide in the guide cage 4-1 to open or close the valve port 9; the orientation of the valve port 9 and the movement direction of the valve plate 4-2 to open the valve port 9 are both inclined upward.

[0053] like Figure 3-6 and Figure 13 The control mechanism 5 includes a support 5-1, a push-pull rod 5-2, a connecting rod 5-3, an opening and closing rod 5-4 and two pull rods 5-6; the driving mechanism includes a wire rope 5-7 and a winch 5-5, wherein the support 5-1 is set on the water discharge seat 1, and the middle part of the opening and closing rod 5-4 is hinged on the support 5-1; one end of the push-pull rod 5-2 is fixedly connected to the valve plate 4-2, and the other end of the push-pull rod 5-2 is hinged to one end of the connecting rod 5-3, and the connecting rod 5-4 is hinged to the valve plate 4-2. The other end of the rod 5-3 is hinged to the opening and closing rod 5-4; one end of one of the pull rods 5-6 is hinged to the end of the opening and closing rod 5-4 close to the connecting rod 5-3, and the other end of the pull rod 5-6 is connected to one end of the wire rope 5-7 on the winch 5-5; one end of the other pull rod 5-6 is hinged to the end of the opening and closing rod 5-4 away from the connecting rod 5-3, and the other end of the pull rod 5-6 is connected to the other end of the wire rope 5-7 on the winch 5-5.

[0054] With the above structure, when the valve port 9 needs to be opened, the winch 5-5 works forward, and the wire rope 5-7 on the winch 5-5 near the end of the connecting rod 5-3 pulls the pull rod 5-6 near the connecting rod 5-3, driving the opening and closing rod 5-4 to rotate and swing, thereby driving the connecting rod 5-3 to move upward, and then driving the push-pull rod 5-2 to move upward, the push-pull rod 5-2 pulls the valve plate 4-2, and the valve plate 4-2 moves upward along the guide rod 4-13 to open the valve. Port 9; when it is necessary to close the valve port 9, the winch 5-5 works in the reverse direction, and the wire rope 5-7 on the winch 5-5 away from the connecting rod 5-3 will pull the pull rod 5-6 away from the connecting rod 5-3, driving the opening and closing rod 5-4 to rotate and swing in the opposite direction, thereby pushing the connecting rod 5-3 to move downward, and then pushing the push-pull rod 5-2 to move downward, and the push-pull rod 5-2 pushes the valve plate 4-2, and the valve plate 4-2 moves downward along the guide rod 4-13 to close the valve port 9.

[0055] Specifically, there is only one wire rope 5-7, which is spirally wound on the winch. After both ends of the wire rope 5-7 extend from the winch, they are respectively connected to two pull rods 5-6. When the winch 5-5 is working, one end of the wire rope will be wound and the other end will be loosened, that is, one end of the wire rope 5-7 pulls a pull rod 5-6 and the other end loosens a pull rod 5-6, thereby realizing the rotation and swinging of the opening and closing rod 5-4. The winch 5-5 changes the rotation direction of the opening and closing rod 5-4 through different working directions.

[0056] The connecting rod 5-3 and the push-pull rod 5-2 as well as the connecting rod 5-3 and the opening and closing rod 5-4 are hinged by a latch, and the pull rod 5-6 is a stainless steel pull rod.

[0057] like Figure 4 Support 5-1 is a concrete support consisting of a lower base 5-11 and an upper base 5-12. Construction of support 5-1 was carried out in two phases: first, the lower base 5-11 was constructed, followed by the upper base 5-12. Anchor bars 5-13 reinforced the connection between the lower and upper bases 5-11 and 5-12. The upper base 5-12 is tilted, with the opening and closing rod 5-4 hinged to the top slope of the upper base 5-12. The angle between the guide cage 4-1 and the horizontal plane is 18°.

[0058] In the above structure, the purpose of setting the pull rod 5-6 is to reduce the elastic deformation during the traction process and to push the valve plate 4-2 to move when closing the valve port, so as to ensure accurate control of the opening and closing of the valve port 9.

[0059] If the opening and closing rod 5-4 is directly connected through the wire rope 5-7, when the valve is opened, the winch 5-5 will work and tighten the wire rope 5-7. The wire rope 5-7 has a certain elasticity. When the wire rope 5-7 is pulled, the instantaneous pressure of opening the valve port 9 is relatively large, and the wire rope 5-7 will be deformed. The valve port 9 can be opened only after it is deformed to a certain extent. After the valve port 9 is opened, the pressure is relatively small, and the wire rope 5-7 will rebound (resume and shrink). The wire rope 5-7 will instantly further pull the valve plate 4-2, resulting in the inability to accurately control the opening of the valve port 9. Therefore, by setting the pull rod 5-6, the control accuracy can be improved.

[0060] like Figure 1-2 and Figure 13 The control mechanism 5 is powered by a winch 5-5, which also has a flashlight dual function, that is, the winch 5-5 can be driven by manually rotating the turntable, and the winch 5-5 can also be driven by a motor. In general, manual opening and closing are used. The lengths of the pull rod 5-6 and the wire rope 5-7 are determined according to the water level of the reservoir. The part above the flood limit water level is the wire rope 5-7, that is, the wire rope 5-7 is located above the water level, which can ensure a smooth connection with the winch 5-5 and prevent the wire rope 5-7 from contacting water and causing rust. The part below the flood limit water level is the pull rod 5-6, that is, the pull rod 5-6 is located in the water. The pull rod 5-6 can reduce elastic deformation during traction, and has a rust-proof function, thereby increasing service life.

[0061] See also Figures 1-6 and Figure 13 By pulling the wire rope 5-7 on the winch 5-5, the opening and closing rod 5-4 is rotated to push the valve port 9 to open and close. The opening and closing speed and opening and closing degree are controlled by the winch 5-5, or manual opening and closing are used during power outages to achieve regulation of the reservoir water level.

[0062] like Figure 10 The second flange 4-12 is provided with a guide hole 4-121, which is slidably connected to the push-pull rod 5-2. By providing the guide hole 4-121, the push-pull rod 5-2 is guided to ensure the stability of the movement of the valve plate 4-2 and the push-pull rod 5-2.

[0063] like Figure 5 At both ends of the top of the support 5-1 are provided with limit blocks 11 for limiting the opening and closing rod 5-4. When the valve port 9 is opened, the valve plate 4-2 is prevented from moving too far and hitting the second flange 4-12. By providing the limit blocks 11, the opening and closing rod 5-4 is limited, ensuring that the valve plate 4-2 moves within a safe range. When the valve port 9 is closed, the opening and closing rod 5-4 is limited by another limit block 11 to prevent damage to the valve port 9.

[0064] like Figure 13The wire rope 5-7 is connected to the pull rod 5-6 via a buckle 19. The hoist 5-5 is located in the hoisting chamber 14 on the dam 15. Multiple first support and guide assemblies 12 for supporting and guiding the pull rod 5-6, as well as multiple second support and guide assemblies 13 for supporting and guiding the wire rope 5-7, are provided between the hoist 5-5 and the support 5-1. This structure supports and guides the pull rod 5-6 and the wire rope 5-7, improving the stability of their movement and reducing frictional resistance.

[0065] See also Figures 1-6 and Figure 13 , multiple first support and guide assemblies 12 are divided into two rows, and the two rows of first support and guide assemblies 12 are arranged in one-to-one correspondence with the two tie rods 5-6; each first support and guide assembly 12 includes a tie rod pier 12-1 arranged on the dam slope 16 and a tie rod guide wheel 12-2 arranged on the tie rod pier 12-1 for guiding the tie rod 5-6.

[0066] The second support and guide assembly 13 includes a wire rope pier 13-1 and a wire rope guide wheel 13-2 arranged on the wire rope pier 13-1 for guiding the wire rope 5-7; the wire rope pier 13-1 of one of the second support and guide assemblies 13 is arranged in the opening and closing chamber 14, and the wire rope piers 13-1 of the other second support and guide assemblies 13 are arranged on the dam slope 16.

[0067] The dam slope 16 is tilted, and the control mechanism 5 is tilted along the dam slope 16 as a whole. This facilitates driving the valve plate 4-2, allowing it to be pulled along the direction of the dam slope 16, making it easier to open the valve port 9. It also facilitates the installation and layout of the control mechanism 5, making construction easier. The two pull rods 5-6 gradually approach each other in an upward tilt, and are finally connected to the winch 5-5 via a wire rope 5-7. The angle of the wire rope 5-7 gradually decreases, and the provision of two rows of second support guide assemblies 13 allows the wire rope 5-7 to be guided, saving costs. The pull rod guide wheel 12-2 and the wire rope guide wheel 13-2 can reduce friction, facilitating the movement of the pull rod 5-6 and the wire rope 5-7.

[0068] like Figure 13 The orientation of the valve port 9 and the movement direction of the valve plate 4 - 2 to open the valve port 9 are consistent with the slope direction of the dam slope 16 .

[0069] The dam slope 16 can be a concrete dam slope, and the wire rope pier 13-1 and the tie rod pier 12-1 can be concrete piers or iron frame piers.

[0070] Example 2

[0071] like Figure 3In addition to Example 1, an exhaust pipe 17 is further provided. One end of the exhaust pipe 17 is connected to the drain culvert 6, and the other end extends upward along the dam slope 16 to communicate with the atmosphere. By providing the exhaust pipe 17, after the valve port 9 is closed, air can enter the drain culvert 6 through the exhaust pipe, facilitating the emptying of the water in the drain culvert 6. Furthermore, after the valve port 9 is opened, the air in the drain culvert 6 can be discharged through the exhaust pipe 17, which also facilitates and accelerates water drainage.

[0072] Example 3

[0073] like Figure 3 , stainless steel trash rack 18 is set around the drain seat 1. By arranging the stainless steel trash rack 18, the impurities in the reservoir can be blocked to prevent the impurities from clogging the valve port 9.

[0074] The working principle of the above-mentioned reservoir water release control device is:

[0075] When water needs to be released, the control mechanism 5 drives the valve plate 4-2 to slide obliquely upward on the guide cage 4-1, opening the valve port 9. The water in the reservoir will enter the elbow 2 from the valve port 9, and then enter the discharge culvert 6 of the discharge seat 1, and finally be discharged through the drainage culvert 3, and finally discharged into the downstream of the dam 15; when water does not need to be released, the control mechanism 5 drives the valve plate 4-2 to slide obliquely downward on the guide cage 4-1, and the valve plate 4-2 gradually approaches the valve port 9, and finally fits with the valve port 9 to close the valve port 9.

[0076] This application is provided with a limit block, the stroke of the opening and closing rod 5-4 is determined, and the stroke of the valve plate is also determined, so that the number of rotations of the winch can be determined to determine whether the valve port is closed. The drainage culvert 3 can also be checked. If no water flows out, it can be determined that the valve port 9 is closed.

[0077] In the process of closing the valve port 9, since the valve plate 4-2 moves downwardly, the gravity of the valve plate 4-2 itself can also cause the valve plate 4-2 to move downwardly. At the same time, the direction of the valve port 9 is also tilted upward. When releasing water, the water flows downwardly at the valve port 9. The water suction force of the valve port 9 and the water pressure will also cause the valve plate 4-2 to move downwardly, which can increase the speed of closing the valve port 9 and better seal the valve port 9, thereby improving the sealing performance. Moreover, the valve plate 4-2 and the valve port 9 are arranged at an angle, and the valve plate 4-2 is subjected to less pressure. The valve plate 4-2 is not easy to deform, and opening the valve port 9 is more labor-saving, which will not cause the control mechanism 5 to overload. The guide cage 4-1 plays a filtering role, blocking impurities, making it difficult for stones to accumulate at the valve port 9, and ensuring that the valve plate 4-2 and the valve port 9 fit tightly.

[0078] The reservoir water release control device of the present invention is different from the currently conventionally used flat steel gates opened and closed by wire rope traction or screw traction, as well as the water release valve structure with application number 201821347298.3, and has obvious advantages:

[0079] First, unlike the conventional method of relying on the gravity of the gate to close and opening and closing vertically on the ground, the reservoir water release control device of the present invention can well adapt to the slope terrain structure of the dam slope 16. The slope of the dam slope 16 is an inclined surface. The orientation of the valve port 9 and the movement direction of the valve plate 4-2 to open the valve port 9 in the present invention are both inclined upward, which is adapted to the slope of the dam slope 16.

[0080] Second, compared to conventional flat steel gates, the reservoir discharge control device of the present invention is less affected by water pressure, thus avoiding the problem of conventional flat steel gates being unable to fully close due to excessive water pressure during high reservoir water levels. Furthermore, due to its reduced impact on water pressure, the reservoir discharge control device of the present invention requires less force to open and close, allowing it to be configured as a dual-use device, with the winch capable of either electric or manual opening and closing.

[0081] Third, compared with the flat steel gate opened and closed by screw traction, the reservoir water release control device of the present invention adopts wire rope traction, which avoids the problem of being unable to open and close due to the deflection and deformation of the gate opening and closing screw.

[0082] Fourth, compared to the drain valve structure of application number 201821347298.3, the present invention does not rely solely on the deadweight of the valve plate to close the valve port. A designed drive mechanism ensures the opening and closing of the drain valve. The drive mechanism utilizes a combination of a wire rope 5-7 and a stainless steel pull rod. This not only transmits force through the wire rope 5-7 of the winch 5-5, but also reduces the impact of elastic deformation of the wire rope 5-7 on the opening and closing flexibility of the valve port 9.

[0083] Fifth, the reservoir water release control device of the present invention has a small foundation pit excavation area during construction, which enables rapid construction and reduces the pressure on reservoir flood control caused by construction.

[0084] Sixth, in the prior art, when gates are maintained and repaired, it is necessary to lift the flat steel gates. The reservoir water release control device of the present invention has a simpler structure and is a non-flat structure, making maintenance and repair simpler and more convenient.

[0085] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A reservoir water release control device, characterized in that: The device comprises a bend pipe, a discharge valve, a control mechanism, and a drive mechanism. The bend pipe is arranged on the inclined surface of the dam slope in the reservoir water storage area. The outlet end of the bend pipe is connected to the downstream of the dam, and the water inlet end of the bend pipe is connected to the discharge valve. The discharge valve comprises a valve plate and a guide cage. The guide cage is obliquely connected to the water inlet end of the bend pipe. The valve plate is slidably arranged in the guide cage. The valve plate is connected to the control mechanism, and the control mechanism is connected to the drive mechanism. The valve plate slides up and down in the guide cage under the action of the control mechanism and the drive mechanism to open or close the water inlet end of the bend pipe. The inclination direction of the guide cage and the movement direction of the valve plate are both parallel to the inclined surface of the dam. The driving mechanism includes a wire rope and a winch. The winch is set in the hoisting chamber of the dam. There is only one wire rope, which is spirally wound on the winch. The two ends of the wire rope extend from the winch and are connected to the control mechanism. The control mechanism includes a support, a push-pull rod, a connecting rod, an opening and closing rod and two pull rods. The support is fixed on the dam, and the middle part of the opening and closing rod is hinged on the support; one end of the push-pull rod is fixedly connected to the valve plate, the other end of the push-pull rod is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the opening and closing rod; one end of one of the pull rods is hinged to the end of the opening and closing rod close to the connecting rod, and the other end of the pull rod is connected to one end of the wire rope; one end of the other pull rod is hinged to the end of the opening and closing rod away from the connecting rod, and the other end of the pull rod is connected to the other end of the wire rope.

2. A reservoir water release control device according to claim 1, characterized in that: Limit blocks for limiting the opening and closing rod are provided at both ends of the top of the support.

3. A reservoir water release control device according to claim 1, characterized in that: A plurality of first support and guide assemblies for supporting and guiding the pull rod, and a plurality of second support and guide assemblies for supporting and guiding the wire rope are arranged between the hoist and the support.

4. A reservoir water release control device according to claim 1, characterized in that: It also includes a discharge seat, which is buried at the dam foot and has a discharge culvert for water to flow through inside the discharge seat; a water inlet and a water outlet are provided on the discharge seat, the outlet end of the bent pipe is connected to the water inlet of the discharge seat, and the outlet of the discharge seat is connected to the drainage culvert, which leads to the downstream of the reservoir; the support is fixed on the discharge seat.

5. A reservoir water release control device according to claim 4, characterized in that: It also includes an exhaust pipe, one end of which is connected to the drain culvert, and the other end of which extends upward along the dam slope and is connected to the atmosphere.

6. A reservoir water release control device according to claim 4, characterized in that: Stainless steel trash racks are installed around the drain seat.

7. A reservoir water release control device according to claim 1, characterized in that: The guide cage includes a first flange, a second flange and multiple guide rods. The water inlet end of the elbow is provided with a mounting flange. Each flange is provided with guide rod through-holes having the same number as the guide rods. The edge of the valve plate is provided with guide grooves that slide with the guide rods. The first flange is arranged on the mounting flange. One end of the multiple guide rods passes through the first flange and the guide rod through-holes of the mounting flange and are then fixed by nuts. The water inlet end of the elbow forms the valve port of the drain valve. The other end of the guide rod passes through the guide groove of the valve plate and the guide rod through-holes of the second flange and are then fixed by nuts.

8. A reservoir water release control device according to claim 7, characterized in that: A protrusion that cooperates with the valve port is provided on the side of the valve plate close to the valve port, and a number of reinforcing ribs are provided on the other side of the valve plate. The several reinforcing ribs gather toward the center of the gate plate. A mounting hole for the push-pull rod to pass through is opened in the center of the valve plate. The push-pull rod passes through the valve plate and is fixedly connected to the valve plate.

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