A floating inspection gate for blocking water without embedded parts in dam body

Abstract

The utility model relates to the technical field of water conservancy and hydropower engineering equipment, and discloses a floating inspection gate for blocking water without embedded parts of a dam body, which is mainly composed of a gate body, a side water stop, a bottom water stop, and a pumping and drainage system. The gate body is a sealed hollow cavity structure, the side water stops are vertically installed on both sides of the downstream panel of the gate body, the bottom water stop is horizontally installed on the bottom of the downstream panel of the gate body, and the two ends of the bottom water stop are respectively connected to the bottom ends of the water stops on both sides, and the pumping and drainage system is installed at the bottom position in the gate body, and the side water stops and the bottom water stops are both flexible parts. The utility model can form dry land construction conditions between the inspection gate and the working gate, which is convenient for the maintenance and replacement of the working gate, and can completely solve the problem of affecting the upstream and downstream irrigation, power generation and ecological environment when repairing or replacing the original working gate, and realizes one-time investment and long-term operation. It is simple to operate and use, and has low operating costs.

Description

Technical Field

[0001] The utility model relates to water conservancy and hydropower engineering equipment, in particular to a floating inspection gate used for blocking water without embedded parts in a dam body. Background Art

[0002] As the service life of the original water conservancy projects increases, the original working gates of some old hydropower station water inlets, reservoir dam flood discharge gates, spillways, etc. need to be repaired or replaced. However, the working gates of these old hydraulic structures are not equipped with inspection doors or inspection door slots (no embedded parts). Therefore, the original working gates are not suitable for inspection or replacement unless the reservoir is empty (that is, the water upstream of the gate is drained), and the empty reservoir will have a significant impact on upstream and downstream irrigation, power generation and ecological environment. Therefore, if a maintenance gate without embedded parts can be designed to block water, dry land construction conditions can be formed at the original working gate without emptying the reservoir, which will greatly facilitate the maintenance and replacement of the original working gate. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a floating inspection gate for blocking water of a dam body without embedded parts, so as to solve the shortcomings and deficiencies existing in the background technology.

[0004] The technical problem solved by the utility model is achieved by the following technical solutions:

[0005] A floating inspection gate for blocking water without embedded parts in a dam body, characterized in that: the floating inspection gate is mainly composed of a gate body, side water stops, a bottom water stop, and a pumping and drainage system. The gate body is a sealed hollow cavity structure. The side water stops are vertically installed on both sides of the downstream panel of the gate body, and the spacing between the side water stops and the shape of the side water stops match the spacing between the concrete piers on both sides of the working gate orifice and the shape of the concrete piers. The bottom water stop is horizontally installed at the bottom of the downstream panel of the gate body, and the two ends of the bottom water stop are respectively connected to the bottom ends of the water stops on both sides. The pumping and drainage system is installed at the bottom position inside the gate body, and the side water stops and the bottom water stop are both flexible parts.

[0006] For the utility model, a driving system is installed on each side of the door body, and the driving system includes an angle adjustment component and a propeller. The angle adjustment component can adjust the propulsion angle of the propeller, and the propeller can drive the door body to move horizontally forward, backward, left and right.

[0007] For the utility model, a water seal seat plate is arranged on the downstream panel of the door body at the installation position of the side water stop and the bottom water stop, and the flexible parts of the side water stop and the bottom water stop are installed and fixed on the corresponding water seal seat plates.

[0008] For the utility model, the bottom water stop is a straight line or arc structure.

[0009] For the utility model, the drainage system includes a valve, a water pump and a connecting pipe. The water pump is installed in the internal cavity of the door body and is connected to the outside of the door body through the connecting pipe. The drainage system can inject or pump out clean water into the door body to adjust the draft depth of the door body.

[0010] For the utility model, a manhole is arranged on the top beam of the door body, and a lifting lug for lifting the door body is respectively arranged at the left and right ends of the top beam.

[0011] Working principle: The utility model utilizes the water pressure upstream of the gate body to tightly fit the side water stop and bottom water stop of the floating inspection gate with the piers on both sides of the working gate opening and the concrete at the bottom, thereby forming a partitioned space between the inspection gate and the working gate. After the working gate is opened to drain the water in the partitioned space, dry land construction conditions can be formed at the working gate, so that the working gate can be repaired or replaced.

[0012] Beneficial effects: By using the utility model, dry land construction conditions can be formed between the inspection gate and the working gate, so as to facilitate the maintenance and replacement of the working gate. This can completely solve the problem of affecting upstream and downstream irrigation, power generation and ecological environment when repairing or replacing the original working gate, and achieves one-time investment and long-term operation. It is simple to operate and has low operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural front view of the utility model (without concrete pier);

[0014] Figure 2 This is a top view of the structure of the utility model (with concrete gate piers).

[0015] In the figure: 1-gate body, 2-side water stop, 3-bottom water stop, 4-pumping and drainage system, 5-concrete gate pier, 6-driving system, 7-lifting ear, 8-flexible part, 9-manhole, 10-water seal seat plate, 11-concrete contour below the working gate opening. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with the accompanying drawings:

[0017] See attached Figure 1-2As shown, a floating inspection gate for blocking water in a dam body without embedded parts is mainly composed of a gate body 1, side waterstops 2 (composed of flexible parts 8 on the left and right sides and water seal seat plates 10 on the left and right sides), a bottom waterstop 3 (composed of a flexible part 8 on the bottom and a water seal seat plate 10 on the bottom), and a drainage system 4. The gate body is a sealed hollow cavity structure (a supporting structure such as a rib plate is installed inside the gate body, which is not shown in the figure). The side waterstops are vertically installed on both sides of the downstream panel of the gate body, and the spacing between the side waterstops on both sides and the shape of the side waterstops match the spacing between the concrete piers 5 on both sides of the working gate orifice and the shape of the concrete piers. The bottom waterstop is transversely installed at the bottom of the downstream panel of the gate body, and the two ends of the bottom waterstop are respectively connected to the bottom ends of the waterstops on both sides (the top of the side waterstop extends to the top of the gate body), and the drainage system is installed at the bottom position inside the gate body, and the side waterstops and the bottom waterstops are both flexible parts 8.

[0018] In specific implementation:

[0019] 1. A driving system 6 is installed on each side of the door body, and the driving system mainly consists of an angle adjustment component and a propeller. The propeller can be a vane pump, etc., which can drive the door body to move horizontally forward, backward, left and right by starting the propeller after the door body is immersed in water; the angle adjustment component can be a common angle detection device, which can monitor the relative position of the door body and the working gate opening when the door body moves and aligns to the working gate opening in the water body, and control the propulsion angle of the propeller according to the monitoring data, move the door body to the working gate opening, and finally make the door body face the working gate opening, and its side water stop is aligned with the concrete pier of the working gate opening, and the bottom water stop is aligned with the concrete structure below the working gate opening, so that when the door body is subjected to upstream water pressure, the door body can achieve the purpose of water stopping through the cooperation of the side water stop and the bottom water stop with the concrete.

[0020] 2. The pumping and drainage system is mainly composed of valves, water pumps and connecting pipes. The valves and water pumps are installed in the internal cavity of the gate body and are connected to the outside of the gate body through the connecting pipe. The pumping and drainage system can be used to pour or pump out clean water into the gate body to adjust the draft of the gate body: because the gate body is a hollow cavity structure, after it is put into the water, the draft of the entire gate body is shallow, and the bottom water stop cannot contact the concrete structure below the working gate opening, so the bottom water stop cannot play its water-stopping role in work. At this time, the pump of the pumping and drainage system can be started in the positive direction to pump the upstream water into the internal cavity of the gate body through the connecting pipe. The gate body will gradually sink as the amount of water pumped into the internal cavity increases. When the gate body sinks to the bottom water stop and can fully contact the concrete below the working gate opening, stop pumping water into the gate body; after the working gate is repaired or replaced, start the pumping and drainage system pumping water in the internal cavity of the gate body to the outside of the gate body in the reverse direction, and the gate body gradually rises as the amount of water in the internal cavity of the gate body decreases.

[0021] 3. An access hole 9 is installed on the top beam of the door body. The function of the access hole is: when the water pump of the drainage system is started to fill water into the door body, the access hole can be opened to connect the internal cavity of the door body with the external atmosphere to avoid the increase of the air pressure in the cavity as the amount of water in the door body increases; and when the water pump is pumping water out of the door body, the access hole must also be opened to avoid the decrease of the air pressure in the cavity as the amount of water in the door body decreases; at the same time, the staff can also open the access hole to enter the cavity of the door body to inspect the inside of the door body and the drainage system. A lifting lug 7 is also installed at the left and right ends of the top beam, which is used to lift the door body by wire rope and lifting equipment to put the door body into the water or lift it out of the water.

[0022] 4. Installation method of side water stop and bottom water stop: A water seal seat plate 10 (fixed on the downstream panel of the door body by bolts or welding) is set on the downstream panel of the door body at the installation position of the side water stop and the bottom water stop, and the flexible parts 8 of the side water stop and the bottom water stop (having a certain elasticity and can be compressed when subjected to force, such as rubber strips) are installed and fixed on the corresponding water seal seat plate. The flexible parts and the water seal seat plate are fixed by bolts or adhesive bonding (the water seal seat plate is a long strip and is provided with a groove, and the flexible parts are fixed in the groove; the side water stop or the bottom water stop is assembled by the water seal seat plate and the flexible parts), and it is ensured that the flexible parts will not fall off the water seal seat plate. At the same time, the thickness of the flexible parts should be appropriately higher than the door panel, and it is ensured as much as possible that when the flexible parts are squeezed by the upstream water pressure and their thickness becomes thinner during use, the door body is still not in contact with the concrete at the opening of the working gate to avoid damage and deformation of the door panel.

[0023] 5. The concrete contour 11 below the opening of most working gates is straight or arc-shaped. In order to achieve the ideal water-stopping effect as much as possible, the bottom water stop of the utility model also adopts a straight or arc-shaped structure that matches the concrete contour. When the bottom water stop is an arc (such as the attached Figure 2 The curvature of the side water stop is consistent with the curvature of the concrete below the working gate opening (dam body curvature). Similarly, if the concrete gate piers on both sides of the working gate opening have a certain curvature or other shape, the side water stop is also customized to match the shape of the concrete gate pier.

[0024] 6. Water blocking operation process of this floating maintenance gate:

[0025] Step 1: After the gate body is put into the water, the driving system drives the gate body to move to the front of the working gate opening that needs to be blocked, and then the gate body is accurately positioned by external forces such as wire rope hoists, and the water stops on both sides are aligned with the middle of the concrete gate piers on both sides (as shown in the attached figure, generally an arc structure);

[0026] Step 2: After the gate is in place, start the drainage system to pour clean water into the gate body and adjust the draft of the gate body until the bottom water stop and side water stop of the gate body are in full contact with the concrete in front of the working gate opening;

[0027] Step 3: Lift the working gate to drain the water between the floating inspection gate and the working gate. The upstream water pressure acts on the floating inspection gate body, so that the flexible body of the floating inspection gate body is tightly attached to the concrete in front of the working gate opening.

[0028] Step 4: Strong upstream water pressure acts on the side and bottom water stops of the flexible body, so that the flexible body is deformed under pressure and in close contact with the concrete in front of the working gate opening, reducing or eliminating the gap between the side and bottom water stops of the flexible body and the concrete in front of the working gate opening, so as to prevent the water from upstream (or in the reservoir area) from leaking downwards and achieve the water-stopping effect. In this way, dry land construction conditions are formed between the inspection gate and the working gate, which is convenient for the maintenance and replacement of the working gate.

[0029] 7. This equipment can be flexibly operated by taking advantage of its own floating and controllable draft characteristics; this equipment can achieve close contact by utilizing the close cooperation between the side waterstop of the floating inspection gate body and the straight or arc bottom waterstop (consistent with the shape of the dam body) and the concrete in front of the working gate opening, so that the gap between the floating inspection gate and the concrete in front of the working gate opening is small or even no gap; the waterstop device of this equipment is a waterstop device specially designed according to the shape of the dam body and conforms to the specific actual shape, which can make the side waterstop and bottom waterstop of the gate and the concrete in front of the working gate opening closely cooperate to achieve water blocking.

[0030] The utility model has a simple structure and is easy to use. It is particularly suitable for hydropower stations, reservoirs and rivers. When there is no maintenance gate, it does not require an empty reservoir or a new cofferdam to provide conditions for the maintenance or replacement of the original working gate without affecting the upstream and downstream irrigation, power generation of the power station and the ecological environment. It is easy to operate and use, and has a low operating cost.

[0031] The utility model and its implementation are described, and such description is not restrictive. The drawings are only one of the implementations of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and implementation example similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A floating inspection gate for blocking water without embedded parts in a dam body, characterized by: The floating maintenance gate is mainly composed of a gate body, side waterstops, bottom waterstops, and a pumping and drainage system. The gate body is a sealed hollow cavity structure. The side waterstops are vertically installed on both sides of the downstream panel of the gate body, and the spacing between the side waterstops and the shape of the side waterstops match the spacing between the concrete piers on both sides of the working gate opening and the shape of the concrete piers. The bottom waterstop is horizontally installed at the bottom of the downstream panel of the gate body, and the two ends of the bottom waterstop are respectively connected to the bottom ends of the waterstops on both sides. The pumping and drainage system is installed at the bottom position inside the gate body. The side waterstops and the bottom waterstops are both flexible parts.

2. A floating inspection gate for water blocking without embedded parts in a dam body according to claim 1, characterized in that: A driving system is installed on each side of the door body, and the driving system includes an angle adjustment component and a propeller.

3. A floating inspection gate for water blocking without embedded parts in a dam body according to claim 1, characterized in that: The drainage system comprises a valve, a water pump and a connecting pipe. The valve and the water pump are installed in the inner cavity of the door body and are connected to the outside of the door body through the connecting pipe.

4. A floating inspection gate for water blocking without embedded parts in a dam body according to claim 1, characterized in that: A water seal seat plate is arranged on the downstream panel of the door body at the installation position of the side water stop and the bottom water stop, and the flexible parts of the side water stop and the bottom water stop are installed and fixed on the corresponding water seal seat plates.

5. A floating inspection gate for water blocking without embedded parts in a dam body according to claim 1 or 4, characterized in that: The bottom water stop is a straight line or arc structure.

6. A floating inspection gate for water blocking without embedded parts in a dam body according to claim 1, characterized in that: A manhole is arranged on the top beam of the door body, and a lifting lug for lifting the door body is respectively arranged at the left and right ends of the top beam.

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