A movable cover plate for water diversion

Abstract

The present invention discloses a movable cover plate of a water diversion port, comprising a split door plate, a door shaft, a rubber strip and a caulking strip; the split door plate is located at the top of the water diversion port shaft, a handle is provided on the movable side of the upper surface of the split door plate, a sleeve is provided on the fixed side of the lower surface, and rubber strip slots are provided on both sides perpendicular to the water flow direction of the river channel; the door shaft is an L-shaped anchor bar cast in situ in the shaft wall, and the exposed part is located in the sleeve of the split door plate, which is used to fix the split door plate; the rubber strip is installed in the rubber strip slot of the split door plate, which is used to reduce the collision between the split door plate and the concrete of the shaft slot when the split door plate is closed under the action of gravity, and reduce the sound; the caulking strip is located on the upstream side of the split door plate, and is fixed in the groove of the shaft wall after the split door plate is installed, so as to restrict the split door plate from moving in the direction of the water flow. The cover plate of the present invention is completely opened by hydraulic power and closed by gravity, and can be fully automatically operated while having the effect of preventing siltation; the hydraulic power required to open the cover plate is small, and the siltation reduction effect is good.

Description

Technical Field

[0001] The invention relates to a water diversion outlet structure in a water conservancy and hydropower project, and in particular to a movable cover plate of the water diversion outlet located at the top of a vertical shaft type water diversion outlet when distributing water for river landscape, which can be automatically opened under the action of hydraulic power and automatically closed when water is cut off, thereby preventing siltation in the vertical shaft. Background Art

[0002] The diversion outlets for distributing water to the river are generally arranged on the river bank, and a flap gate structure is used to prevent siltation. However, in plain areas, where the river network is crisscrossed and buildings are dense, and due to the terrain or surface building land requirements, the diversion outlet box culvert or pipeline is not buried deep enough, so setting a vertical shaft diversion outlet at the bottom of the river, that is, the riverbed, is a last resort.

[0003] The vertical shaft water outlet arranged on the riverbed must take into account the siltation problem when water distribution is suspended. The conventional method is to raise the wall of the vertical shaft above the riverbed by a certain height. However, if the height of the top of the vertical shaft above the riverbed is not high enough, the anti-siltation effect is not ideal; if the height above the riverbed is too high, the impact on the flow of the river itself is greater.

[0004] A feasible method is to raise the top of the shaft slightly above the riverbed by a certain height and install an anti-siltation cover, but the operation and management of the fixed cover are troublesome. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art in preventing siltation of a vertical shaft water diversion outlet located at the bottom of a riverbed, and to provide a movable cover plate for a water diversion outlet. By arranging a herringbone cover plate similar to a sloping roof at the bottom of the vertical shaft, on the one hand, the height of the vertical shaft above the riverbed can be reduced, thereby reducing the impact on the flow of the river channel; on the other hand, the cover plate is completely opened by hydraulic power and closed by gravity, and can be operated fully automatically while initiating the effect of preventing siltation.

[0006] The technical solution adopted by the present invention is: a movable cover plate of a water diversion port, including a split door panel, a door shaft, a rubber strip and a caulking strip. The split door panel is located at the top of the water diversion port shaft, and includes a panel, a handle, a sleeve, and a rubber strip slot. The panel is an aluminum alloy thin plate, and a handle is provided on the movable side of the upper surface, and a sleeve is provided on the fixed side of the lower surface. There can be two sleeves. Rubber strip slots are provided on both sides perpendicular to the water flow direction of the river channel; the door shaft is an L-shaped anchor bar cast in situ in the shaft wall, made of round steel, and the exposed part is located in the sleeve of the split door panel for fixing the split door panel; the rubber strip is installed in the rubber strip slot of the split door panel, which is used to reduce the collision between the split door panel and the concrete of the shaft slot when the split door panel is closed under the action of gravity, and reduce the sound; the rubber strip can be set to 4; the caulking strip is located on the upstream side of the split door panel, and is made of square steel. After the split door panel is installed, it is fixed to the groove of the shaft wall by bolts to restrict the split door panel from moving in the direction of water flow.

[0007] The top of the shaft is generally arranged at a certain height above the riverbed protection, which can be 30cm to 50cm; the bottom of the shaft is connected to the box culvert.

[0008] The movable cover plate is located in the groove at the top of the water diversion shaft, and is limited by the higher side wall of the shaft. Generally, the opening angle of the double-leaf door plate will not be greater than 90°, and the opening and closing directions of the double-leaf door plate are perpendicular to the direction of river water flow.

[0009] The movable cover plate adopts a slope surface structure, and the upper surface of the split door plate is a slope surface, which is beneficial to reduce the siltation of the upper part when the water diversion outlet is not running and the movable cover plate is closed. For the convenience of construction, it is also feasible to directly adopt a flat slope structure.

[0010] The split door panel can be divided into two rectangular panels on the upper part of a rectangular shaft and arranged to be split, or can be divided into two semicircular panels on the upper part of a circular shaft and arranged to be split.

[0011] The beneficial effects of the present invention are:

[0012] 1) Simple structure and easy operation. The cover is fully opened by hydraulic power and closed by gravity, which can prevent siltation and operate fully automatically.

[0013] 2) The structure has good anti-siltation effect. The cover plate arranged in a herringbone slope not only requires less hydraulic force to open, but is also better than the top flat cover plate in reducing siltation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of the water diversion outlet of an embodiment of the present invention;

[0015] Figure 2 It is the detailed plan layout of the water diversion shaft and movable cover;

[0016] Figure 3 yes Figure 2 Sectional view along the centerline of the box culvert;

[0017] Figure 4 yes Figure 2 B-B sectional view;

[0018] Figure 5 yes Figure 2 C-C section view;

[0019] Figure 6 yes Figure 2 The plan layout of the shaft without movable cover;

[0020] Figure 7 It is a detailed cross-sectional view of the lower surface of the movable cover;

[0021] Figure 8 yes Figure 7 D-D section view.

[0022] In the figure: 1-movable cover; 11-double door panel; 11a-panel; 11b-casing; 11c-handle; 11d-rubber strip slot; 12-door axis; 13-rubber strip; 14-caulking strip; 2-vertical shaft; 3-box culvert; 4-riverbed bottom protection; 5-bolt. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 8 As shown, a movable cover plate 1 of a water diversion port of the present invention comprises a split door panel 11, a door shaft 12, a rubber strip 13 and a caulking strip 14. The split door panel 11 is located at the top of the water diversion port shaft 2, and is composed of a panel 11a, a sleeve 11b, a handle 11c, and a rubber strip slot 11d. The panel 11a is an aluminum alloy thin plate, with a handle 11c welded on the movable side of the upper surface, two sleeves 11b welded on the fixed side of the lower surface, and rubber strip slots 11d welded on both sides perpendicular to the direction of the water flow in the river channel; the door shaft 12 is an L-shaped anchor bar cast in situ in the wall of the shaft 2, made of round steel, and the exposed part is located at the split door panel 11 The sleeve 11b is used to fix the double-door panel 11; there are 4 rubber strips 13, which are installed in the rubber strip slots 11d of the double-door panel 11, and are used to reduce the collision between the double-door panel 11 and the concrete of the groove of the shaft 2 when the double-door panel 11 is closed under the action of gravity, and reduce the sound; the caulking strip 14 is located on the upstream side of the double-door panel 11, and is made of square steel. After the double-door panel 11 is installed, it is fixed to the groove of the wall of the shaft 2 with bolts 5 to constrain the displacement of the double-door panel 11 in the direction of water flow.

[0025] The top of the shaft 2 is generally arranged to be higher than the riverbed protection 4 by a certain height, which may be 30 cm to 50 cm; the bottom of the shaft 2 is connected to the box culvert 3 .

[0026] The movable cover plate 1 is located in the groove at the top of the water diversion shaft 2. The side wall of the shaft 2 is used to limit the opening of the split door plate 11, which generally does not open more than 90 degrees. The opening and closing directions of the split door plate 11 are perpendicular to the direction of the river water flow.

[0027] The movable cover plate 1 adopts a slope surface structure, and the upper surface of the split door plate 11 is a slope surface, which is beneficial to reduce the siltation of the upper part when the water diversion outlet is not in operation and the movable cover plate 1 is closed. For the convenience of construction, it is also feasible to directly adopt a flat slope structure.

[0028] The split door panel 11 can be divided into two rectangular panels on the upper part of the rectangular shaft 2 and arranged in split mode, or can be divided into two semicircular panels on the upper part of the circular shaft 2 and arranged in split mode.

[0029] The above embodiments describe the present invention in conjunction with the accompanying drawings, but this should not be understood as limiting the patent scope of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A movable cover plate for a water diversion port, characterized in that: It includes a split door panel, a door axis, a rubber strip and a caulking strip; the split door panel is located at the top of the water diversion shaft, and includes a panel, a handle, a sleeve, and a rubber strip slot; a handle is provided on the movable side of the upper surface of the panel, a sleeve is provided on the fixed side of the lower surface, and rubber strip slots are provided on both sides perpendicular to the water flow direction of the river; the door axis is an L-shaped anchor bar cast in situ in the shaft wall, and the exposed part is located in the sleeve of the split door panel, which is used to fix the split door panel; the rubber strip is installed in the rubber strip slot of the split door panel, which is used to slow down the split door panel under gravity. The caulking strip is located on the upstream side of the split door panel, and is fixed in the groove of the shaft wall after the split door panel is installed to constrain the displacement of the split door panel along the water flow direction; the movable cover plate is located in the groove at the top of the water diversion shaft, and is limited by the higher side wall of the shaft, so that the opening of the split door panel is not more than 90°; the opening and closing directions of the split door panel are perpendicular to the water flow direction of the river; the movable cover plate adopts a slope surface structure, and the upper surface of the split door panel is a slope surface.

2. The movable cover plate of the water diversion port according to claim 1 is characterized in that: The split door panel is divided into two rectangular panels on the upper part of the rectangular shaft and arranged to be split, or is divided into two semicircular panels on the upper part of the circular shaft and arranged to be split.

3. The movable cover plate of the water diversion port according to claim 1 is characterized in that: The panel is made of aluminum alloy thin plate.

4. The movable cover plate of the water diversion port according to claim 1 is characterized in that: The caulking strip is fixed in the groove of the shaft wall by bolts.

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