Plunger type gate device

Abstract

A plunger type gate device comprises a plunger and a crown part, the plunger extends into the section of a water passing hole, the plunger comprises a gate leaf, the gate leaf is composed of a plunger supporting beam, an upstream face steel plate and a water stop ring, the water stop ring is formed by arranging H-shaped steel or channel steel towards the hole wall to form a circle of groove, U-shaped rubber is inversely buckled in the groove, and a hollow rubber bag is installed in the groove. A plunger supporting beam is arranged in the water stop ring, and an upstream face steel plate is welded to the front side of the water stop ring; the crown is arranged outside the hole, the upward end of a crown supporting beam of the crown is hinged to a base through a connecting rod, the base is embedded in the outer wall of the hole, the top point of a herringbone beam faces outwards and is fixed to the crown supporting beam, the top point of the herringbone beam is connected with the crown supporting beam through a pull rod, and the crown supporting beam is connected with a plunger through a pull rod. The device is simple in civil engineering work, the precision requirement for gate manufacturing and mounting can be lowered, the load and scale of supporting walking components and opening and closing facilities are reduced, and the construction, operation and maintenance cost of the gate is remarkably reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy projects, and in particular relates to a plunger type gate device. Background Art

[0002] Gates are essential devices for water conservancy projects. They come in many forms, and modern gates are mainly steel gates. Gates are generally customized according to the use scenario. Due to the high working pressure, high water-stopping requirements, and complex working conditions, gates require high precision control in the manufacture and installation of gate leaves and embedded parts. Compared with tunnel pipelines, gates require additional movement space and supporting facilities, complex structures, many embedded points, and delicate and complex civil engineering. The construction difficulty and cost are relatively high. Utility Model Content

[0003] The utility model aims to provide a tunnel pipeline gate capable of reducing construction and operation and maintenance costs, and therefore proposes a plunger type gate device.

[0004] A plunger-type gate device, characterized in that: it includes a plunger and a crown, the plunger extends into the cross-section of the water hole, the plunger includes a gate leaf, the gate leaf is composed of a plunger support beam, a water-facing steel plate and a water stop ring, the water stop ring is formed by an H-shaped steel or channel steel to form a circle of grooves toward the hole wall, and a U-shaped rubber is buckled in the groove to form an annular cavity, a hollow rubber bag is installed in the cavity and a vent pipe is connected; a plunger support beam is arranged in the inner ring of the water stop ring, and the water-facing steel plate is fixed on the front side of the water stop ring, and the periphery of the water-facing steel plate is connected to the edge of the water stop ring The frame is welded, the air-filled cavity in the water stop ring and the water-facing steel plate together form the water stop surface of the door leaf; the crown is arranged outside the opening, and includes a crown support beam, a herringbone beam and a pull rod. The top of the crown support beam is hinged to the base through a connecting rod, and the base is buried on the outer wall of the opening. The apex of the herringbone beam faces outward and is fixed on the crown support beam to form a triangular structure. The crown support beams and the plunger support beams are arranged in corresponding quantity and position, and are connected one by one with connectors, and the apex of the herringbone beam is connected to the crown support beam with a connector.

[0005] Furthermore, a gate control console is provided outside the device, and a gate opening and closing machine, a pressure-stabilizing gas cylinder, a high-pressure gas cylinder and a connecting pipe are provided inside the gate control console; the lower end of the connecting pipe is connected to the ventilation pipe of the rubber bag, a valve is installed on the connecting pipe, and the control console controls the charging and discharging of the rubber bag by opening and closing the valve, the upper end of the connecting pipe is connected to the pressure-stabilizing gas cylinder and a ventilation pipe valve is provided, the pressure-stabilizing gas cylinder is connected to the high-pressure gas cylinder and a high-pressure pipe gas valve is provided, and the pressure of the pressure-stabilizing gas cylinder is regulated by the high-pressure gas valve.

[0006] Furthermore, a liquid tank is provided in the gate control console, a high-pressure air pipe is connected to the liquid level in the liquid tank, a hydraulic pipe is connected to the vent pipe of the rubber bag below the liquid level in the liquid tank, and water or hydraulic oil can be filled into the rubber bag instead of inflation.

[0007] Furthermore, the connecting parts include pull rods, hinged pull rods and spring hinged pull rods. When the shape of the hole entrance is regular, all connecting parts are fixedly connected by pull rods; when the shape of the hole entrance is irregular, the connecting parts between the crown support beam and the plunger are connected by hinged pull rods whose length is greater than the pull rods, and are hingedly supported by oblique hinged springs.

[0008] Furthermore, a roller is provided at the top of the door leaf to guide the plunger to enter and exit the deeper hole.

[0009] The beneficial effects of the utility model are as follows: the part where the plunger contacts the cave wall adopts an expandable and contractible flexible structure, and a gap is left between the gate plunger and the surrounding cave wall, which reduces the precision requirements and application difficulty of gate manufacturing and installation. When opening and closing, the rubber bag releases pressure, the annular cavity shrinks, and the gate is mechanically out of contact with the cave wall, reducing friction, which can systematically reduce the load and scale of the supporting walking parts and the opening and closing facilities, and further reduce the construction and operation and maintenance costs. Therefore, this device has strong adaptability and high economic benefits, and can be widely used in new construction and upgrading of water conservancy projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of a plunger-type gate structure in Example 1.

[0011] Figure 2 This is a schematic vertical cross-sectional view of the plunger support beam in Example 1.

[0012] Figure 3 This is a schematic diagram of the partial cross-section of the water stop ring.

[0013] Figure 4 This is a schematic diagram of the cross section of the water stop ring.

[0014] Figure 5 This is a schematic diagram of the gate control console.

[0015] Figure 6 It is an overall schematic diagram of the plunger gate device and the gate control console.

[0016] Figure 7 This is a schematic diagram of a plunger-type gate structure in Example 2.

[0017] Figure 8 It is a schematic diagram of the vertical section of the plunger support beam in Example 2.

[0018] Among them: 1-water-facing steel plate, 2-plunger support beam, 3-water stop ring, 4-rubber bag, 5-U-shaped rubber, 6-crown support beam, 7-herringbone beam, 8-pull rod, 9-connecting rod, 10-base, 11-pressure-stabilizing gas cylinder, 12-high-pressure gas cylinder, 13-connecting pipe, 14-high-pressure pipe gas valve, 15-vent pipe valve, 16-liquid storage tank, 17-inner wall of the hole, 18-articulated pull rod, 19-articulated spring support, 20-roller. DETAILED DESCRIPTION

[0019] Example 1: A reservoir reserves five 3m×2m rectangular hole diversion culverts as discharge channels during the construction of the second phase of the project. After the main construction is completed, four of the holes will be permanently blocked, and one of the holes will be equipped with a gate as a sand flushing channel and maintenance gate to facilitate the cleaning of silt in the reservoir area during operation. Through hydrological and water conservancy calculations, under the minimum flow in the dry season, the water flow is 3.60m 3 / s, only one culvert can be used for diversion, and the water depth of the bottom culvert inlet is 0.88m. The plunger gate is used for blocking, and the maximum working head of the gate is 12.75m. After structural calculation, 6# steel is selected as the main material to make the plunger gate. The total weight of the gate is 450kg, which is convenient for lifting. Because all the holes in the bottom culvert have the same shape and size, the same gate is used to block the water inlets of the first four culverts in turn, and concrete is poured in the hole to complete the permanent blocking of the four culverts. Finally, the gate is installed on the fifth culvert that needs to be retained, and the opening and closing and pressure stabilization control system is improved. It is retained as the sand flushing channel and maintenance and emptying gate of the reservoir.

[0020] A plunger-type gate device includes a plunger and a crown, and the plunger extends into the cross section of a water-passing hole. The plunger includes a gate leaf, which is composed of a plunger water stop ring 3, a plunger support beam 2, and a water-facing steel plate 1. The water stop ring 3 is formed by an H-shaped steel toward the inner wall 17 of the hole to form a circle of continuous rectangular ring grooves with an opening facing outward, and a circle of U-shaped rubber 5 made of rubber with carbon black added is inverted in the groove to form a continuous annular cavity that can expand and contract. A hollow rubber bag 4 is installed in the cavity and connected to a vent pipe. A grid-shaped plunger support beam 2 is arranged in the inner ring of the water stop ring 3, and a water-facing steel plate 1 is installed on the front side of the water stop ring 3. The periphery of the water-facing steel plate 1 is welded to the frame of the water stop ring 3. The water-facing steel plate 1 is made of a whole piece of steel plate. When it is necessary to split, the split is set at a position directly opposite to the plunger support beam 2, and is butt-welded or welded to the plunger support beam 2. The crown is arranged outside the opening, and is composed of a crown support beam 6, a herringbone beam 7 and a tie rod 8. The upward end of part of the crown support beam 6 is hinged on the base 10 through a connecting rod 9, and the base 10 is buried on the outer wall of the opening. The apex of the herringbone beam 7 faces outward and is fixed on the crown support beam 6. A tie rod 8 is set between the apex and the crown support beam 6. The number and position of the crown support beam 6 and the plunger support beam 2 are set one by one, and a tie rod 8 is set to connect them. The herringbone beam 7 is used to increase the load-bearing capacity of the crown and transmit the water pressure borne by the middle of the gate to the outer wall of the opening.

[0021] A gate control console is built on the shore above the plunger gate device. The gate control console is equipped with a hoist, a pressure-stabilizing gas cylinder 11, a high-pressure gas cylinder 12 and a connecting pipe 13. The lower end of the connecting pipe 13 is connected to a vent pipe like a capsule 4. A valve is installed on the connecting pipe 13 to control the pressure increase or decrease of the gas bag 4. The upper end of the connecting pipe 13 is connected to the pressure-stabilizing gas cylinder 11 with a larger volume and a vent pipe valve 15 is installed. When the rubber bag 4 is connected to the pressure-stabilizing gas cylinder 11, the internal pressures of the two are equal. When the rubber bag 4 is slightly deformed or leaks slightly, due to the large volume of the pressure-stabilizing gas cylinder 11, the overall volume change rate is small. According to Bonnie's law, the pressure change rate is also correspondingly small, and it can be within the design working pressure range of the gate for a long time. The high-pressure gas cylinder 12 is connected to the pressure-stabilizing gas cylinder 11 and is equipped with a high-pressure pipe gas valve 14 to replenish gas for the pressure-stabilizing gas cylinder 11 and set the pressure value according to the pressure gauge.

[0022] When the gate needs to be opened and closed, the exhaust valve on the connecting pipe 13 is opened, the rubber bag 4 is depressurized, the annular cavity shrinks, the gate is mechanically out of contact with the cave wall, the friction force is reduced, and it is convenient for opening and closing.

[0023] When the gate needs to be closed to cut off the water flow, after the gate is closed in place, adjust the high-pressure valve 14, set the working pressure of the pressure-stabilizing gas cylinder 11, close the high-pressure pipe gas valve 14, open the vent pipe valve 15, the vent pipe 13 is connected to the pressure-stabilizing gas cylinder 11, the rubber bag 4 expands, the U-shaped rubber 5 is squeezed outward, and it is closely attached to the inner wall 17 of the hole, and the hole is closed and the water is cut off. When the gate needs to be opened, open the discharge valve on the connecting pipe 13, the rubber bag 4 is depressurized, the annular cavity shrinks, the gate is mechanically out of contact with the hole wall, the friction is reduced, and then the opening and closing action is performed.

[0024] Example 2: In this example, the entrance of the tunnel is a bell-shaped tunnel, and the rear section is a gate-shaped tunnel. First, the shape of the water stop ring 3 and the layout of the plunger support beam 2 need to be adjusted to match the closed cross-sectional shape. Secondly, the distance between the crown and the plunger needs to be lengthened to avoid the gradual change section of the tunnel diameter. In this case, the pull rod 8 between the crown support beam 6 and the plunger in Example 1 needs to be replaced with a hinged pull rod 18 whose length is greater than the pull rod 8, and the hinged oblique hinged spring support 19 is hinged. After the pull rod 8 is changed to the hinged pull rod 18, the plunger part is lifted up under the push of the hinged spring support 19, so that when the gate is in the open state, the rotation radius of the plunger part is reduced, and the stroke and limit of the spring support 19 are set to allow the plunger to enter the tunnel smoothly; a roller part 20 is set on the top of the gate leaf. When the roller 20 hits the top of the tunnel, the plunger is pressed down to return to the designed position.

[0025] The rubber bag in this embodiment uses hydraulic oil as the working medium, and a liquid storage tank 16 for convenient liquid level observation needs to be connected in series between the pressure-stabilizing gas cylinder 11 and the connecting pipe 13. The air pipe of the pressure-stabilizing gas cylinder 11 is connected to the liquid storage tank 16 above the liquid level, and the connecting pipe 13 is connected to the liquid storage tank 16 below the liquid level. Open the vent pipe valve 15, the pressure-stabilizing gas cylinder 11 is connected to the hydraulic liquid storage tank 16 to maintain the stability of the hydraulic pressure.

Claims

1. A plunger type gate device, characterized in that: It includes a plunger and a crown. The plunger extends into the cross section of the water hole. The plunger includes a door leaf. The door leaf is composed of a plunger support beam, a water-facing steel plate and a water-stop ring. The water-stop ring is formed by an H-shaped steel or a channel steel to form a circle of grooves toward the hole wall, and a U-shaped rubber is buckled in the groove to form an annular cavity. A hollow rubber bag is installed in the cavity and connected to a vent pipe. A plunger support beam is arranged in the inner ring of the water-stop ring, and the water-facing steel plate is fixed on the front side of the water-stop ring. The periphery of the water-facing steel plate is welded to the frame of the water-stop ring. The inflated cavity and the water-facing steel plate together form the water-stop surface of the door leaf; the crown is arranged outside the opening, including a crown support beam, a herringbone beam and a pull rod, the upward end of the crown support beam is hinged to the base through a connecting rod, the base is buried on the outer wall of the opening, the apex of the herringbone beam faces outward and is fixed on the crown support beam to form a triangular structure, the crown support beams and the plunger support beams are arranged in corresponding number and position, and are connected one by one with connectors, and the apex of the herringbone beam is connected to the crown support beam with a connector.

2. A plunger type gate device as claimed in claim 1, characterized in that A gate control console is also provided outside the device, and a gate opening and closing machine, a pressure-stabilizing gas cylinder, a high-pressure gas cylinder and a connecting pipe are provided inside the gate control console; the lower end of the connecting pipe is connected to the ventilation pipe of the rubber bag, and the upper end is connected to the pressure-stabilizing gas cylinder and a gas valve is provided; the pressure-stabilizing gas cylinder is connected to the high-pressure gas cylinder and a high-pressure gas valve is provided.

3. A plunger type gate device as claimed in claim 2, characterized in that A liquid storage tank is also provided in the gate control console. A high-pressure air pipe is connected to the liquid level above the liquid storage tank. A hydraulic pipe is connected to the vent pipe of the rubber bag below the liquid level of the liquid storage tank, so that water or hydraulic oil can be filled into the rubber bag instead of inflation.

4. A plunger type gate device as claimed in claim 1, characterized in that The connecting member comprises a pull rod, an articulated pull rod and an articulated spring support.

5. A plunger type gate device as claimed in claim 1, characterized in that A roller is also arranged on the top of the door leaf.

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