Controllable friction water gate

Abstract

A hydraulic gate with controllable friction force is disclosed. One side of the gate panel consists of a frame structure composed of several horizontal and vertical beams. A compartment is formed between the horizontal and vertical beams of the frame. One side of the compartment is the water-facing side, and the other side of the panel is the back-flow side. Several water passage holes are provided on the horizontal beams of the gate, running vertically through each other. Lifting lugs are installed at the upper end of the gate for lifting it up and down. Several guide wheels are installed on the left and right sides of the water-facing side of the gate, and a water seal is installed on the back-flow side. Several sliders and magnets are installed on the outside of the water seal and arranged longitudinally along both sides of the gate. The corresponding slide rails of the gate slot are made of magnetic material, and the gate magnets and the gate slot slide magnets have their magnetic poles aligned. This invention reduces the water thrust of the gate by using magnets and utilizing the principle of like poles repulsion, thereby reducing friction and facilitating the opening and closing of the gate.

Description

Technical Field

[0001] This utility model discloses a hydraulic gate with controllable friction force, which can be applied in the field of water conservancy engineering. Background Technology

[0002] In recent years, the phenomenon of jamming when planar gates close has frequently occurred, posing a threat to the safe operation of hydropower stations. Planar gate pulleys, sliders, and guide rails are generally made of steel-based copper-plastic composite materials and high-strength nylon. After long-term operation, the coefficient of friction increases significantly beyond the design value. Increasing the counterweight or changing the gate's shape cannot generate sufficient downward suction to overcome the friction. Even with regular maintenance, the coefficient of friction of the pulleys, sliders, and guide rails will gradually increase. When the coefficient of friction increases to a certain value, it eventually leads to gate closure failure. Summary of the Invention

[0003] In response to the problems existing in the prior art, this utility model discloses a hydraulic gate with controllable friction. A magnet is installed on the water seal side of the gate, and a magnet is also installed in the corresponding gate slot. By utilizing the principle of like poles repulsion, the water thrust on the gate is reduced, thereby reducing the friction and causing the gate to close.

[0004] The technical solution adopted in this utility model is: A hydraulic gate with controllable friction includes lifting lugs, water passage holes, longitudinal beams, transverse beams, guide wheels, water seals, sliders, and magnets. One side of the gate panel is a frame structure composed of several transverse beams and longitudinal beams, with a compartment formed between the longitudinal beams and transverse beams of the frame. One side of the compartment is the water-facing side, and one side of the other side panel is the back-flow side. Several water passage holes are provided on the transverse beam of the gate, which are connected vertically to drain the water accumulated in the compartment. Lifting lugs are installed at the upper end of the gate for lifting the gate up and down. Several guide wheels are installed on the left and right sides of the water-facing side of the gate, and a water seal is installed on the back side of the gate. Several sliders and magnets are installed on the outside of the water seal and arranged longitudinally along both sides of the gate. The corresponding slide rail of the gate slot is made of magnetic material, and the magnetic poles of the gate magnet and the gate slot slide rail magnet are the same and aligned.

[0005] The magnets can be electromagnets or permanent magnets. Electromagnets need to be surface treated, while permanent magnets can be samarium cobalt magnets or ferrite magnets.

[0006] A slider can be installed on the outer side of the water seal downstream of the gate, or a magnet can be used to replace part of the slider. The gate slot can use a whole magnet to replace the slide, or the slide inside the tunnel can be replaced with a magnet.

[0007] The water seal adopts a "mountain" or "P" shape to block water. The water seal can deform under pressure. After deformation, the thickness of the water seal is still greater than the thickness of the slider and magnet.

[0008] The beneficial effects of this utility model are: by setting up a magnet, the water thrust of the gate is reduced by utilizing the principle of like poles repulsion, thereby reducing friction and facilitating the opening and closing of the gate. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the entire gate. Figure 2 Schematic diagram of the gate's flow-facing surface; Figure 3 This is a schematic diagram of the backflow surface of the gate.

[0010] In the diagram: 1. Lifting lug; 2. Water passage hole; 3. Longitudinal beam; 4. Crossbeam; 5. Guide wheel; 6. Water seal; 7. Sliding block; 8. Magnet. Detailed Implementation

[0011] The specific implementation of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0012] A hydraulic gate with controllable friction includes: a lifting lug 1; a water passage hole 2; a longitudinal beam 3; a transverse beam 4; a guide wheel 5; a water seal 6; a slider 7; and a magnet 8.

[0013] One side of the gate panel is a frame structure composed of several longitudinal beams 3 and transverse beams 4, forming a compartment between the longitudinal beams 3 and transverse beams 4. The upstream side is the compartment, and the downstream side is the panel; that is, one side of the gate compartment is the water-facing side, and the other side of the panel is the back-flow side (downstream side). Water passage holes 2 are provided on the transverse beams 4, running vertically through each other, to drain water accumulated in the compartment. Lifting lugs 1 are installed at the upper end of the gate for lifting it up and down.

[0014] Several guide wheels 5 are installed on both sides of the water-facing side of the gate. The guide wheels 5 slide along the gate slot track, providing support and movement. A water seal 6 is installed on the back-flow side of the gate. The water seal 6 is in the shape of a "mountain" or "P" and serves to block water.

[0015] Several magnets 8 are installed on the outer side of the backflow surface water seal 6 of the gate and arranged longitudinally along both sides of the gate. Magnet tracks are installed at corresponding positions in the gate slot that mates with the gate, and the magnets 8 on the gate and the magnets in the gate slot have the same magnetic poles aligned.

[0016] A slider 7 can be installed on the outer side of the water seal 6 downstream of the gate, and arranged longitudinally along both sides of the gate. Alternatively, a magnet 8 can be used to replace part of the slider 7, and the gate slot can use a whole magnet to replace the slide rail, or a partial magnet can be used instead.

[0017] Magnet 8 can be an electromagnet or a permanent magnet. The electromagnet needs to be surface treated. The permanent magnet can be a samarium cobalt magnet or a ferrite magnet. Rare earth materials can also be added to prevent corrosion and rust.

[0018] The water seal 6 of this invention will deform under water pressure. It should be ensured that the thickness of the water seal after deformation is still greater than the thickness of the slider 7 and the magnet 8.

[0019] Utilizing the principle of like poles repulsion in magnets 8, the gate magnet 8 and the gate slot magnet generate a repulsive force. At this time, the gate is subjected to water thrust and magnetic repulsion in the horizontal direction, which reduces the resultant force of the horizontal force and consequently reduces the frictional force, which is beneficial for the opening and closing of the gate.

[0020] Magnet 8 is installed using a quick installation method, and is fixed to the gate by bolts or anchoring. The number of magnets 8 can be increased or decreased according to the actual situation to change the friction force on the gate.

[0021] This utility model has a novel concept and, although simple in structure, is convenient and practical. The terms "upper," "lower," "front," "back," "thick," and "thin" are used merely for ease of description and understanding, and are not intended to limit the specific quantity. For those skilled in the art, any structural descriptions in the specific embodiments can be adjusted within the scope of their understanding, and any obvious adjustments and modifications made should also fall within the protection scope of this utility model.

Claims

1. A hydraulic gate with controllable friction force, characterized in that: Includes lifting lugs (1); water passage holes (2); longitudinal beams (3); cross beams (4); guide wheels (5); water seals (6); sliders (7); magnets (8); one side of the gate panel is a frame structure composed of several cross beams and longitudinal beams. A compartment is formed between the longitudinal beams (3) and the cross beams (4) of the frame. One side of the compartment is the water-facing side, and the other side of the panel is the back-flow side. Several water passage holes are provided on the gate cross beam. The water passage holes (2) are connected from top to bottom and are used to drain the water accumulated in the compartment. Lifting lugs are installed at the top of the gate for lifting the gate up and down. Several guide wheels (5) are installed on the left and right sides of the water-facing side of the gate, and a water seal (6) is installed on the back side of the gate. Several sliders (7) and magnets (8) are installed on the outside of the water seal and arranged longitudinally along both sides of the gate. The corresponding slide of the gate slot is made of magnetic material, and the gate magnet (8) and the gate slot slide magnet have the same magnetic poles aligned.

2. The hydraulic gate with controllable friction force according to claim 1, characterized in that: The magnet (8) is an electromagnet or a permanent magnet, and the permanent magnet is a samarium cobalt magnet or a ferrite magnet.

3. The hydraulic gate with controllable friction force according to claim 1, characterized in that: The slider (7) on the outer side of the water seal (6) on the downstream side of the gate is replaced by a magnet (8), and the gate slot is replaced by a whole magnet instead of a slide, or the slide inside the tunnel is replaced by a magnet.

4. The hydraulic gate with controllable friction force according to claim 1, characterized in that: The water seal (6) adopts a "mountain" or "P" shape to block water. After being deformed by pressure, the thickness of the water seal (6) is still greater than the thickness of the slider (7) and the magnet (8).

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