Device for solving problem that concrete surface at joint of steel and concrete in water delivery gallery of ship lock is easy to damage

Abstract

The utility model relates to the technical field of ship lock water delivery gallery construction, in particular to a device for solving the problem that a concrete surface at the joint of steel and concrete in a ship lock water delivery gallery is prone to damage. Comprising a steel protection panel arranged in the water delivery gallery, an upper periphery chamfering plate is arranged at the upper end of the steel protection panel, a lower periphery chamfering plate is arranged at the lower end of the steel protection panel, the inner side edge of the upper periphery chamfering plate is fixedly connected to the upper end of the steel protection panel, and the outer side edge of the upper periphery chamfering plate extends upwards in an inclined mode. The inner side edge of the lower peripheral chamfering plate is fixedly connected to the lower end of the steel protection panel, and the outer side edge of the lower peripheral chamfering plate extends downwards in an inclined manner. The device is simple in structure, convenient to install and capable of effectively reducing the destructive effect of the cavitation phenomenon generated by torrential water flow on a water delivery gallery structure, and the service life of the ship lock water delivery gallery is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of construction of a ship lock water delivery gallery, in particular to a device for solving the problem that a concrete surface at a steel-concrete joint in a ship lock water delivery gallery is easily damaged. Background Art

[0002] Ship lock refers to a type of "navigation structure". In natural rivers, due to the regulation of flow, channelization of navigation, and the limitation of terrain conditions and water surface slope on canals, a stepped longitudinal section must be formed to form a concentrated water surface drop. Therefore, special navigation structures must be used to allow ships to pass through the drop directly. The most commonly used modern navigation structure is the ship lock, which is a box-shaped structure consisting of upstream and downstream pilot channels and upstream and downstream gates connected to the lock chamber. The lock chamber is a box-shaped chamber for mooring ships. The water level in the lock chamber is adjusted by filling or draining water in the chamber, so that the ship can be vertically lifted and lowered between the upstream and downstream water levels, thereby passing through the concentrated channel water level drop. When the ship travels from downstream to upstream, the water level in the chamber drops to the same level as the downstream water level, and then the gate of the downstream gate is opened, the ship enters the lock chamber, the gate is closed, and water is poured. After the water level rises to the same level as the upstream water level, the gate of the upstream gate is opened, and the ship can leave the lock and sail upstream through the upstream pilot channel. When the ship travels from upstream to downstream, the operation procedure of passing the lock is the opposite. The filling and draining of the lock chamber needs to be completed with the help of the water transfer corridor. The filling and draining time of the water transfer corridor should be as short as possible and meet the requirements of stable berthing of ships passing through the lock. The filling and draining time of the ship lock is generally 10 to 15 minutes. The stable berthing of ships passing through the lock is usually measured by the force of the water flow on the ships passing through the lock during the filling and draining process of the lock chamber, that is, the tension of the mooring rope of the ship passing through the lock. The allowable value is generally 1 / 600 to 1 / 2000 of the ship's displacement (in tons). There are two basic forms of water transfer corridors: ① centralized water transfer system. The filling and draining of the lock chamber are concentrated at the lock head through the water transfer corridors located in the upper and lower lock heads, also known as the head water transfer system; ② decentralized water transfer system. The filling and draining of the lock chamber are carried out by the water transfer corridor through the outlets distributed along the length of the lock chamber on the lock chamber floor or in the lock wall. The water delivery corridor is equipped with a water delivery valve. During the water inlet and outlet process, the water delivery valve on the water delivery corridor is opened, and the water flow has a greater impact on the water delivery corridor, which is destructive to a certain extent. Especially when the high water level valve is just opened, it is easy to form a vortex at the sharp turn of the water flow in the water delivery corridor to produce cavitation and water hammer. This cavitation and water hammer have a strong vibration effect on the structures in the water delivery corridor. If cracks appear in the corridor, the internal concrete density is insufficient, and there are quality problems such as misalignment and leakage at the junction line between the plane and the curved surface of the water delivery corridor, cavitation and water hammer will have a destructive effect on the defective parts of the concrete surface. Chinese Patent 2023102944045 discloses "Standardized System for the First Section of Ship Lock Inlet Gate", with publication number CN116335101A. The system includes an inlet section gate wall and a gate head structure, and the inlet section gate wall includes a maintenance gate slot and a water delivery corridor. The entrance of the water transfer corridor is set on the gate walls on both sides of the water inlet section and is equipped with trash rack slots. The water transfer corridor turns inside the gate wall and extends downstream along the length of the gate chamber. There are many sharp turns in the entire water transfer corridor, which is very likely to form vortices and produce cavitation and water hammer. Utility Model Content

[0003] The purpose of the utility model is to provide a device with simple structure and convenient installation to solve the problem that the concrete surface at the steel-concrete joint in the water conveyance gallery of the ship lock is easily damaged, reduce the destructive effect of cavitation caused by turbulent water flow on the water conveyance gallery structure, and extend the service life of the water conveyance gallery of the ship lock.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a device for solving the problem that the concrete surface at the joint of steel and concrete in the water conveyance corridor of a ship lock is easily damaged, comprising a steel guard panel arranged in the water conveyance corridor, wherein an upper chamfered plate is arranged at the upper end of the steel guard panel, and a lower chamfered plate is arranged at the lower end, wherein the upper chamfered plate is a folded plate whose inner side edge is fixedly connected to the upper end of the steel guard panel and whose outer side edge extends obliquely upward, and the lower chamfered plate is a folded plate whose inner side edge is fixedly connected to the lower end of the steel guard panel and whose outer side edge extends obliquely downward.

[0006] Through this solution, the steel guard plate can reduce the destructive effect of cavitation caused by turbulent water flow on the water conveyance corridor structure, thereby extending the service life of the lock water conveyance corridor.

[0007] Preferably, the angle between the chamfered plate on the upper edge and the steel guard plate is 130°-150°.

[0008] Through this solution, the upper and lower ends of the steel guard plate are changed to beveled, which can prevent the water flow from vertically impacting the corners of the upper and lower side walls of the lock water delivery gallery, and effectively disperse the impact force of the water flow.

[0009] Preferably, the steel guard panel is an arc-shaped plate with a smooth transition, and the front end of the steel guard panel has an arc-shaped bent front section with a large curvature.

[0010] Through this solution, the steel guard plate can fit well with the side wall of the lock water delivery corridor and reduce the impact force generated by the water flow.

[0011] Preferably, the rear end of the steel guard panel has an arc-shaped bent rear section with a large curvature.

[0012] Through this solution, the cavitation phenomenon caused by the water flow on the water-facing surface can be effectively alleviated.

[0013] Preferably, the steel protective panel is attached to the corner of the inner wall of the water conveyance gallery of the ship lock.

[0014] Through this scheme, the corners of the inner wall of the water transfer corridor of the ship lock can be protected.

[0015] Preferably, the steel protective panel is attached to the outer wall of the rectifying pier in the water delivery gallery of the ship lock.

[0016] Through this scheme, the rectifying piers on the inner wall of the water delivery gallery of the ship lock can be protected.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the device has a simple structure and is easy to install, and can effectively reduce the destructive effect of cavitation caused by turbulent water flow on the water conveyance corridor structure, thereby extending the service life of the lock water conveyance corridor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the cross-sectional structure of a water delivery corridor of a ship lock according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 AA cross-sectional view of the embodiment.

[0020] Figure 3 It is a schematic diagram of the side structure of the steel guard panel.

[0021] Figure 4 yes Figure 3 Schematic diagram of the longitudinal cross-sectional structure of the steel guard panel of the embodiment. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 4 As shown, the device for solving the problem of easy damage of the concrete surface at the joint of steel and concrete in the water delivery corridor of the ship lock described in the utility model includes a steel guard panel 1 arranged in the water delivery corridor, and the steel guard panel 1 is made of corrosion-resistant steel plate. The upper end of the steel guard panel 1 is provided with an upper chamfered plate 2, and the lower end is provided with a lower chamfered plate 3. The upper chamfered plate 2 is a folding plate with an inner side fixedly connected to the upper end of the steel guard panel 1 and an outer side extending obliquely upward, and the lower chamfered plate 3 is a folding plate with an inner side fixedly connected to the lower end of the steel guard panel 1 and an outer side extending obliquely downward. The upper chamfered plate 2 and the lower chamfered plate 3 are welded to the edge of the steel guard panel 1 with steel plates of the same material as the steel guard panel 1, and can also be integrated with the steel guard panel 1 through stamping and bending processes. The angle between the upper chamfered plate 2 and the steel guard panel 1 is 130°-150°, preferably a 135-degree chamfer.

[0024] In addition, the steel guard panel 1 is a smoothly transitioned arc plate adapted to the inner wall of the water delivery corridor or the outer wall of the rectifying pier 4. The steel guard panel 1 can be attached to the corner of the inner wall of the ship lock water delivery corridor, or to the outer wall of the rectifying pier 4 in the ship lock water delivery corridor. When used for the inner wall of the ship lock water delivery corridor, the front end of the steel guard panel 1 has a large curvature arc-shaped bending front section 11, so that a smoothly transitioned arc edge can be formed on the water-facing surface of the inner wall of the ship lock water delivery corridor, reducing the formation of vortices; when used for the rectifying pier 4 in the ship lock water delivery corridor, the front end of the steel guard panel 1 has a large curvature arc-shaped bending front section 11, and the rear end has a large curvature arc-shaped bending rear section 12, so that arc edges are formed at both the front and rear ends of the rectifying pier 4, which can reduce the formation of vortices and reduce the cavitation effect of water flow.

[0025] When in use, after the steel guard panel 1 with the upper chamfer plate 2 and the lower chamfer plate 3 is processed according to the design requirements, the steel guard panel 1 is set on the inner wall of the steel template when pouring the ship lock water delivery corridor and the rectifying pier, and the concrete is poured normally. After the template is removed, the steel guard panel 1 becomes the outer wall of the water delivery corridor and the rectifying pier, and the side walls of the sharp turns of the water flow in the water delivery corridor are protected by the steel guard panel. In addition, since the upper part of the steel guard is equipped with the upper chamfer and the lower part is equipped with the lower chamfer, and the corner of the upper chamfer and the lower chamfer is 135 degrees, the turbulent water flow is not easy to generate eddy currents at the corner of 135 degrees, thereby reducing the cavitation phenomenon and reducing the damage to the concrete surface of the steel-concrete joint, which well solves the problem that the concrete surface of the sharp turn steel-concrete joint in the ship lock water delivery corridor is easy to be damaged, can meet the design and construction requirements to ensure the safe and reliable operation of the water delivery corridor project, improve work efficiency and construction quality, and ensure the normal operation of the ship lock.

[0026] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for solving the problem of easy damage to the concrete surface at the steel-concrete joint in the water delivery gallery of a ship lock, comprising a steel protective panel (1) arranged in the water delivery gallery, characterized in that: The upper end of the steel guard panel (1) is provided with an upper chamfered plate (2), and the lower end is provided with a lower chamfered plate (3). The upper chamfered plate (2) is a folded plate with an inner side fixedly connected to the upper end of the steel guard panel (1) and an outer side extending obliquely upward. The lower chamfered plate (3) is a folded plate with an inner side fixedly connected to the lower end of the steel guard panel (1) and an outer side extending obliquely downward.

2. A device for solving the problem of easy damage to the concrete surface at the steel-concrete joint in the water delivery gallery of a ship lock according to claim 1, characterized in that: The angle between the chamfered plate (2) on the upper edge and the steel protective panel (1) is 130°-150°.

3. A device for solving the problem of easy damage of the concrete surface at the steel-concrete joint in the water delivery gallery of the ship lock according to claim 1 or 2, characterized in that: The steel guard panel (1) is a smoothly transitioned arc-shaped plate, and the front end of the steel guard panel (1) is provided with an arc-shaped bent front section (11) with a large curvature.

4. A device for solving the problem of easy damage to the concrete surface at the steel-concrete joint in the water delivery gallery of a ship lock according to claim 3, characterized in that: The rear end of the steel protective panel (1) is provided with an arc-shaped bent rear section (12) with a large curvature.

5. A device for solving the problem of easy damage of concrete surface at the joint of steel and concrete in the water delivery gallery of a ship lock according to claim 1 or 2, characterized in that: The steel protective panel (1) is attached to the corner of the inner wall of the water delivery gallery of the ship lock.

6. A device for solving the problem of easy damage to the concrete surface at the steel-concrete joint in the water delivery gallery of a ship lock according to claim 1 or 2, characterized in that: The steel protective panel (1) is attached to the outer wall of the rectifying pier (4) in the water delivery gallery of the ship lock.

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