Self-floating type layered water taking waterproof door device

Abstract

The invention discloses a self-floating type layered water taking waterproof door device in the technical field of water conservancy and hydropower engineering. The self-floating type layered water taking waterproof door device comprises the layered water taking waterproof door device, the layered water taking waterproof door device comprises a door groove structure and a waterproof door assembly in sliding fit with the door groove structure, the waterproof door assembly comprises a plurality of door beams which are sequentially arranged in the sliding direction of the waterproof door assembly at intervals, and a flexible door leaf is connected between every two adjacent door beams; the lowest door beam is located at the bottom of the door groove structure, the uppermost door beam is connected with a floating box through a lifting rope, and the floating box floats on the water surface, so that when the water level changes and the multiple door beams are not completely stacked, the floating box can adjust the top elevation of the layered water taking waterproof door device in a self-adaptive mode. When the multiple door beams are not completely stacked and the water level changes, the buoyancy tank can adjust the top elevation of the layered water taking waterproof door device in a self-adaptive mode, water taking is convenient and fast, operation is reliable, and stepless water taking in the vertical water depth range can be achieved through the combination of the buoyancy tank, the door beams and the flexible door leaves.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydropower engineering, and in particular to a self-floating stratified water intake water barrier device. Background Art

[0002] After the completion of the reservoir, the flow rate of the water in the reservoir will decrease, and most reservoirs will experience water temperature stratification. The water temperature stratification phenomenon is particularly obvious in high dam and large reservoirs. The impact of reservoirs on water temperature has become a hot issue in river water environment protection. How to ensure a reasonable downstream water temperature during the operation of the reservoir is one of the important measures to protect the water ecological environment of the downstream river. In order to improve the adverse effects of water resource development and utilization on the basin ecosystem and maintain the health and sustainable development of the river ecosystem, all countries have carried out a series of reservoir engineering and non-engineering ecological regulation measures. Through reservoir scheduling, water resources are rationally optimized to meet the health and stability needs of the river ecosystem.

[0003] The main measures currently used to mitigate the adverse effects of the downstream water temperature on the water environment are: water conservancy ecological regulation, artificial destruction of the reservoir water temperature stratification structure and stratified water intake. For stratified water intake of reservoirs, the method commonly used in China is to set up stratified water intake devices such as stacked beam gates or multi-layer water intake channels at the water inlet or water intake. Among them, stacked beam gates are widely used, especially in hydropower projects with high dams and large reservoirs, such as Baihetan, Jinsha River Xiluodu, and Jinping I of Yalong River. Due to the large number of orifices of large hydropower projects built in China, large water level fluctuations, and large unit flow rates, the top of the stacked beam gate controls a large water depth. Therefore, the number of times a stacked beam gate is operated on a layer is large, and the lifting height is also large; taking the Jinsha River Xiluodu Hydropower Station as an example, if the same layer of stacked beam gates is raised from the orifice, 90 stacked beam gate leaves need to be raised, and the number of operations is as high as 90 times, which is cumbersome and time-consuming. For the stratified water intake technology with multi-layer water intakes, it is necessary to set up multiple layers of water intake channels from top to bottom along the water flow direction at the water intake, set gates in each layer of the channel, and control the gates in each layer of the channel through opening and closing equipment. Because the gates of each layer of the channel need to be staggered along the water flow direction, this will increase the length of the water intake in the direction of water flow. It is generally suitable for reservoirs with small water intake depth. Otherwise, the investment will be increased due to the excessive length of the water intake, but water intake can be achieved in a partial range. However, the time for opening and closing the gates is still long, and the operating efficiency is low.

[0004] To solve the above problems, the patent application with publication number CN118326912A discloses a layered water intake water barrier device that can freely adjust the water intake position, water intake depth and water intake opening. The water barrier assembly includes a plurality of frame main beams arranged in sequence in the sliding direction of the water barrier assembly, the frame main beams slide in cooperation with the door slot structure, and flexible door leaves are connected between adjacent frame main beams. The water barrier assembly, that is, the aforementioned plurality of frame main beams can be stacked in the vertical direction along the guide groove by their own gravity.

[0005] The problem with the prior art is that, in practice, when taking water from the surface, a lifting device is used to lift or lower the stratified water intake watertight gate device. Water temperature is related to water depth, so in order to keep the water intake temperature basically unchanged, a lifting device is needed to adjust the stratified water intake watertight gate device when the water level changes. In the prior art, the adaptive adjustment process of the stratified water intake watertight gate device based on water level changes is relatively complicated. Summary of the invention

[0006] In order to overcome the problem that the adaptive adjustment process of the existing stratified water intake water barrier device based on water level changes is relatively complicated, the present invention provides a self-floating stratified water intake water barrier device.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] The self-floating stratified water-intake water-blocking gate device comprises a stratified water-intake water-blocking gate device, the stratified water-intake water-blocking gate device comprises a gate slot structure and a water-blocking gate assembly arranged in the gate slot structure and slidingly matched with the gate slot structure, the water-blocking gate assembly comprises a plurality of gate beams arranged in sequence and spaced apart in the sliding direction of the water-blocking gate assembly, the gate beams slidingly cooperate with the gate slot structure, flexible gate leaves are connected between adjacent gate beams, the lowest gate beam is located at the bottom of the gate slot structure, and a buoy is connected to the highest gate beam through a suspension rope, the buoy floats on the water surface, so that when the water level changes and a plurality of gate beams are not completely stacked, the buoy can adaptively adjust the top elevation of the stratified water-intake water-blocking gate device.

[0009] The present application is applicable to the use scenario of using a layered water intake water-blocking gate device to take surface water. During use, the lowest gate beam is located at the bottom of the gate slot structure, and the area above the highest gate beam is the water intake area. The present application connects a pontoon to the highest gate beam, so that the pontoon can move with the water level, thereby realizing the movement of the highest gate beam, that is, realizing the adjustment of the top elevation of the layered water intake water-blocking gate device. Specifically, when multiple gate beams are not completely stacked, the top elevation of the layered water intake water-blocking gate device automatically rises and falls with the change of water level, which can keep the surface water intake depth basically unchanged, thereby achieving the purpose of taking water at different elevations and adjusting the temperature of the downstream water. The technical solution provided by the present application eliminates the overall adjustment of the layered water intake water-blocking gate device by an external driving force, realizes adaptive adjustment when the water level changes, and has the characteristics of simple water intake equipment structure, convenient water intake operation, reliable operation and high economy, and the combination of the pontoon, the gate beam and the flexible gate leaf can realize stepless water intake within the vertical water depth range.

[0010] In some embodiments, an automatic tensioning device is further included. When the plurality of door beams are completely stacked and the water level drops, the automatic tensioning device is used to ensure that the suspension rope is in a tensioned state.

[0011] In this embodiment, an automatic tensioning device is provided so that when multiple door beams in the stratified water intake and water barrier gate device are completely stacked, if the water level continues to drop, the automatic tensioning device can ensure that the suspension rope is in a tensioned state, thereby avoiding interference between the suspension rope and other components, causing abnormal subsequent operation of the device.

[0012] In some embodiments, the automatic tensioning device is a clockwork spring, one end of which is fixedly connected to the buoyancy box, and the other end of which is fixedly connected to the suspension rope.

[0013] In this embodiment, the automatic tensioning device is preferably a clockwork spring, which has a simple structure and is easy to implement.

[0014] In some embodiments, a clockwork spring is disposed within the buoyancy tank.

[0015] In this embodiment, the clockwork spring is disposed in the buoyancy box, which not only saves space but also avoids interference and misoperation to improve the reliability of the device.

[0016] In some embodiments, a retracting device is also included, and the retracting device is used for retracting and releasing the lifting rope to facilitate the overall lifting of the stratified water intake and watertightness gate device.

[0017] In this embodiment, a retracting and extending device is additionally provided to facilitate lifting the stratified water intake water barrier device as a whole, thereby achieving lifting of the device as a whole, facilitating maintenance and other operations.

[0018] In some embodiments, the launching and retracting device is disposed in a buoyancy tank.

[0019] In this embodiment, the retracting and launching device is arranged in the buoyancy box, which not only saves space but also avoids interference and misoperation to improve the reliability of the device.

[0020] In some embodiments, the suspension rope is a wire rope or a chain.

[0021] In some embodiments, the flexible door leaf is made of high-strength waterproof canvas.

[0022] In some embodiments, the door beam is configured as a hollow structure including a cavity.

[0023] In this embodiment, the door beam is set as a hollow structure, so as to reduce the weight of the door beam and reduce the production materials; and such implementation can reduce the buoyancy required to be provided by the pontoon, thereby reducing the size of the pontoon device; it can also facilitate lifting when the stratified water intake and watertightness gate is lifted as a whole.

[0024] The beneficial effects of the present invention are:

[0025] 1. When multiple gate beams are not completely stacked and the water level changes, the pontoon can adaptively adjust the top elevation of the stratified water intake watertight gate device, eliminating the overall adjustment of the stratified water intake watertight gate device by external driving force, and realizing adaptive adjustment when the water level changes. The water intake equipment has the characteristics of simple structure, convenient water intake operation, reliable operation and high economy. The combination of the pontoon, gate beam and flexible gate leaf can realize stepless water intake within the vertical water depth range.

[0026] 2. By setting up an automatic tensioning device, when multiple door beams in the stratified water intake and water barrier device are completely stacked, if the water level continues to drop, the automatic tensioning device can ensure that the lifting rope is in a tensioned state to avoid interference between the lifting rope and other components, causing abnormal subsequent operation of the device.

[0027] 3. Add a retracting and releasing device to facilitate the lifting of the stratified water intake water barrier device as a whole, thereby realizing the lifting of the device as a whole, which is convenient for maintenance and other operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the use status of the self-floating stratified water intake water barrier device provided by the present invention Figure 1 ;

[0029] Figure 2 Schematic diagram of the use status of the self-floating stratified water intake water barrier device provided by the present invention Figure 2 ;

[0030] Figure 3 Schematic diagram of the use status of the self-floating stratified water intake water barrier device provided by the present invention Figure 3 ;

[0031] Figure 4A schematic diagram of the lifting state of the self-floating stratified water intake water barrier device provided by the present invention;

[0032] Figure 5 A top view of the coordination of the door beam and door slot structure in the self-floating stratified water intake water-blocking door device provided by the present invention.

[0033] Markings in the figure are: 1- lifting device, 2- buoyancy box, 3- lifting rope, 4- door beam, 5- flexible door leaf, 6- door slot structure. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings.

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] like Figure 1-Figure 5 As shown, the present invention provides a self-floating stratified water intake water barrier device.

[0037] A self-floating stratified water intake watertight gate device, comprising a stratified water intake watertight gate device, such as Figure 5 As shown, the stratified water intake watertight door device comprises a door slot structure 6 and a watertight door assembly arranged in the door slot structure 6 and slidingly matched with the door slot structure 6, the watertight door assembly comprises a plurality of door beams 4 arranged in sequence and spaced apart in the sliding direction of the watertight door assembly, the door beams 4 slidingly match with the door slot structure 6, and flexible door leaves 5 are connected between adjacent door beams 4. The use of the flexible door leaves 5 can increase the service life of the stratified water intake watertight door device and reduce the maintenance and overhaul frequency, thereby effectively improving the reliability of the operation of the entire stratified water intake watertight door device and the stable operation of the water intake work; and the ductility of the flexible door leaves 5 can achieve the effect of rapid pressure relief by changing the direction of its own expansion.

[0038] The flexible door leaf 5 is made of high-strength waterproof canvas. In the present invention, the flexible door leaf 5 is made of a material with good flexibility, extensibility, waterproofness and foldability to provide good water blocking effect and withstand water pressure, such as high-strength waterproof canvas made of nylon, PVC coated cloth and the like.

[0039] The present application is applicable to the use scenario of using a stratified water-intake water-blocking gate device to draw surface water. During use, the lowest gate beam 4 is located at the bottom of the gate groove structure 6, and the highest gate beam 4 is connected to a pontoon 2 via a suspension rope 3. The pontoon 2 floats on the water surface, so that when the water level changes and multiple gate beams 4 are not completely stacked, the pontoon 2 can adaptively adjust the top elevation of the stratified water-intake water-blocking gate device.

[0040] The area above the top gate beam 4 is the water intake area; the present application connects the pontoon 2 to the top gate beam 4 so that the pontoon 2 can move with the water level, thereby realizing the movement of the top gate beam 4, that is, realizing the adjustment of the top elevation of the stratified water intake and watertight gate device; specifically, when multiple gate beams 4 are not completely stacked, the top elevation of the stratified water intake and watertight gate device automatically rises and falls with the change of water level, which can keep the surface water intake depth basically unchanged, thereby achieving the purpose of taking water at different elevations and adjusting the downstream water temperature.

[0041] The technical solution provided in the present application eliminates the overall adjustment of the stratified water intake water barrier device by the external driving force, realizes adaptive adjustment when the water level changes, and has the characteristics of simple water intake equipment structure, convenient water intake operation, reliable operation and high economy. The combination of the pontoon 2, the door beam 4 and the flexible door leaf 5 can realize stepless water intake within the vertical water depth range.

[0042] In this embodiment, an automatic tensioning device is also included. When multiple door beams 4 are completely stacked and the water level drops, the automatic tensioning device is used to ensure that the suspension rope 3 is in a tensioned state. By setting the automatic tensioning device, when multiple door beams 4 in the layered water intake and water barrier device are completely stacked, if the water level continues to drop, the automatic tensioning device can ensure that the suspension rope 3 is in a tensioned state, avoiding interference between the suspension rope 3 and other components, causing abnormal subsequent operation of the device.

[0043] Automatic tensioning devices include a variety of options, such as mechanical automatic tensioning, hydraulic / pneumatic automatic tensioning, and electric tensioning.

[0044] In this embodiment, the automatic tensioning device is a spring, one end of which is fixedly connected to the buoyancy box 2, and the other end of which is fixedly connected to the suspension rope 3. The structure is simple and the implementation is convenient.

[0045] Here, the automatic tensioning is preferably realized by using a clockwork spring in the mechanical automatic tensioning, which has a simple structure, low cost and convenient implementation.

[0046] In this embodiment, the clockwork spring is disposed in the buoyancy box 2, which not only saves space but also avoids interference and misoperation, thereby improving the reliability of the device.

[0047] In this embodiment, a retractable device is also included, which is used for retracting and releasing the lifting rope 3 to facilitate the overall lifting of the stratified water intake and watertightness gate device, thereby realizing the overall lifting of the device for easy maintenance and other operations.

[0048] The retracting and releasing device is a prior art, and generally comprises a driving source and a reel, wherein the driving source drives the reel to move, thereby realizing the retracting and releasing of the suspension rope 3. No further description is given here.

[0049] In this embodiment, the retracting and launching device is arranged in the pontoon 2, which can not only save space but also avoid interference and misoperation, so as to improve the reliability of the device.

[0050] In this embodiment, the suspension rope 3 is a steel wire rope or a chain.

[0051] In this embodiment, the material of the flexible door leaf 5 is high-strength waterproof canvas.

[0052] In this embodiment, the door beam 4 is configured as a hollow structure including a cavity, thereby reducing the weight of the door beam 4 and reducing production materials; and in this way, the buoyancy required to be provided by the pontoon 2 can be reduced, thereby reducing the device size of the pontoon 2; it can also facilitate lifting when the stratified water intake and watertightness gate is lifted as a whole.

[0053] The technical solution adopted by the present invention is as follows:

[0054] The self-floating stratified water intake water barrier device is mainly composed of a buoyancy box 2, a suspension rope 3, a gate beam 4, a flexible gate leaf 5 and a gate slot structure 6. The stratified water intake water barrier device is composed of multiple gate beams 4 connected by flexible gate leaves 5. Sliders and guide devices are provided at the upstream and downstream ends of the gate beams 4, so that the gate beams 4 can operate normally in the gate slot structure 6 without self-locking. During normal operation, the top buoyancy box 2 automatically adjusts with the water level to adjust the top elevation of the stratified water intake water barrier device to keep the water intake depth basically unchanged.

[0055] In this embodiment, the self-floating stratified water intake water barrier device is used in power generation scenarios, and has the following features: Figure 1-Figure 4 The maximum power generation water level and the minimum power generation water level are shown in , wherein when the water level is below the minimum power generation water level, no water intake operation is performed.

[0056] like Figure 1 As shown, at the highest power generation water level, the stratified water intake watertight gate device is in a fully opened state or nearly fully opened state. After the reservoir water level drops, the pontoon 2 also drops with the water level. At this time, multiple gate beams 4 in the stratified water intake watertight gate device begin to stack until the stratified water intake watertight gate device is completely stacked, that is, Figure 2 When the water level is between the highest power generation water level and the water intake depth change water level in the figure, the suspension ropes 3 are at the maximum stretching length. As the water level drops, the pontoon 2 drops, and the multiple door beams 4 are gradually stacked under the action of gravity.

[0057] exist Figure 2 After the state shown, if the water level continues to drop, the relative distance between the top buoy 2 and the stratified water intake water barrier device will decrease, and the multiple door beams 4 have been completely stacked and will not move anymore. During this process, the clockwork spring in the buoy 2 device can be automatically tightened to ensure that the suspension rope 3 is always in a tensioned state until Figure 3The water level in the tank drops to the minimum power generation level.

[0058] At the same time, a retracting device is also provided inside the buoyancy box 2, which can retract and release the suspension rope 3. When the stratified water intake watertight gate device is in normal working condition, the suspension rope 3 is completely released; Figure 4 As shown, when the stratified water intake watertight door device needs to be repaired, the lifting rope 3 can be retracted and finally locked, so as to facilitate the lifting and repair of the stratified water intake watertight door device. At this time, only the external lifting device 1 is needed to lift the buoyancy box 2, so as to facilitate the removal of the stratified water intake watertight door device.

[0059] During normal operation of the unit, there is a certain water level difference between the upstream and downstream of the stratified water-intake water-blocking gate device, which makes the flexible gate leaf 5 tend to expand downstream; when the unit is unloaded, the unit is suddenly shut down, and there is a backlash phenomenon in the water pressure in the tunnel. The negative water hammer impacts the flexible gate leaf 5, which makes the stratified water-intake water-blocking gate device tend to stack in the opposite direction, and the stacked part also has a tendency to expand in the opposite direction, which has a rapid pressure relief effect.

[0060] When the stratified water intake watertight gate device can be stacked normally, the gate beam 4 is made into a cavity structure to provide partial buoyancy, so that the weight of the stratified water intake watertight gate device in the water is reduced, thereby reducing the buoyancy required for lifting the stratified water intake watertight gate device, and further reducing the size of the pontoon 2 device.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-floating stratified water intake watertight gate device, comprising a stratified water intake watertight gate device, the stratified water intake watertight gate device comprising a gate slot structure (6) and a watertight gate assembly arranged in the gate slot structure (6) and forming a sliding fit with the gate slot structure (6), the watertight gate assembly comprising a plurality of gate beams (4) arranged in sequence and spaced apart in a sliding direction of the watertight gate assembly, the gate beams (4) and the gate slot structure (6) being in sliding fit, and flexible gate leaves (5) being connected between adjacent gate beams (4), characterized in that: The lowest door beam (4) is located at the bottom of the door slot structure (6), and the highest door beam (4) is connected to a buoyancy box (2) via a suspension rope (3). The buoyancy box (2) floats on the water surface, so that when the water level changes and a plurality of door beams (4) are not completely stacked, the buoyancy box (2) can adaptively adjust the top elevation of the layered water intake watertight gate device.

2. The self-floating stratified water intake water barrier device according to claim 1, characterized in that: It also comprises an automatic tensioning device, which is used to ensure that the suspension rope (3) is in a tensioned state when a plurality of door beams (4) are completely stacked and the water level drops.

3. The self-floating stratified water intake water barrier device according to claim 2, characterized in that: The automatic tensioning device is a spring, one end of which is fixedly connected to the buoyancy box (2), and the other end of which is fixedly connected to the suspension rope (3).

4. The self-floating stratified water intake water barrier device according to claim 3, characterized in that: The clockwork spring is arranged in the buoyancy box (2).

5. The self-floating stratified water intake water barrier device according to claim 1, characterized in that: It also comprises a retractable device, which is used for retracting and releasing the suspension rope (3) to facilitate the overall lifting of the layered water intake watertightness gate device.

6. The self-floating stratified water intake water barrier device according to claim 5, characterized in that: The retracting and releasing device is arranged in the buoyancy box (2).

7. The self-floating stratified water intake water barrier device according to claim 1, characterized in that: The suspension rope (3) is a steel wire rope or a chain.

8. The self-floating stratified water intake water barrier device according to claim 1, characterized in that: The material of the flexible door leaf (5) is high-strength waterproof canvas.

9. The self-floating stratified water intake water barrier device according to any one of claims 1 to 8, characterized in that: The door beam (4) is configured as a hollow structure including a cavity.

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