CN219973097U - Pumped storage power station trash rack assembly - Google Patents

Abstract

The utility model belongs to the technical field of trash racks in water conservancy and hydropower engineering, and particularly relates to a trash rack assembly of a pumped storage power station. The utility model comprises a trash rack main body, wherein the trash rack main body comprises side beams positioned at two sides of the trash rack main body, the side beams are vertically arranged, the two side beams are fixedly connected through a transversely arranged main beam, grid bars which are vertically arranged are fixedly connected to the main beams, each main beam comprises a first main beam and a second main beam which are symmetrically arranged relative to a vertical plane, the first main beam and the second main beam are box-shaped beams, the section of the first main beam consists of a front convex arc-shaped part and a rear rectangle, the section of the second main beam consists of a front rectangle and a rear convex arc-shaped part, the first main beam is fixedly connected with the second main beam, and an assembly groove for installing the grid bars is formed in the butt joint surface of the first main beam and the second main beam. The utility model is not only suitable for the two-way water flow working condition, but also can improve the water flow smoothness.

Description

Pumped storage power station trash rack assembly

Technical Field

The utility model belongs to the technical field of trash racks in water conservancy and hydropower engineering, and particularly relates to a trash rack assembly of a pumped storage power station.

Background

Referring to fig. 1, a trash rack of a conventional hydropower station generally comprises side beams positioned at two sides of the trash rack, the side beams are vertically arranged, the two side beams are fixedly connected through a transversely arranged main beam to form a supporting frame, the main beam and the side beams generally adopt i-steel, and grid bars which are vertically arranged are fixedly connected to the main beam and are arranged in front of the main beam. Referring to fig. 2, in the middle and high flow velocity water stream, the main beams and the side beams of the support frame are all i-shaped steel, and the structure is unfavorable to the water stream, and two karman vortices are generated. In addition, when the trash rack is installed and used, the left end and the right end of the trash rack are slidably installed in the rack groove, gaps are reserved between the trash rack and the rack groove, the trash rack is integrally vibrated, and vibration damage can be caused under certain conditions.

Disclosure of Invention

The utility model aims to provide a pumped storage power station trash rack assembly which is not only suitable for bidirectional water flow working conditions, but also can improve water flow smoothness.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pumped storage power station trash rack subassembly, including the trash rack main part, the trash rack main part is including the boundary beam that is located its both sides, the boundary beam is vertical to be set up, be connected through the girder stationary phase that transversely sets up between the boundary beam, fixedly connected with is the grid of vertical arrangement on the girder, every girder all includes first girder and the second girder that is the symmetry setting for vertical plane, first girder and second girder are the box girder, the cross-section of first girder comprises the rectangle at anterior evagination arc portion and rear portion, the cross-section of second girder comprises the rectangle at anterior evagination arc portion and rear portion, first girder and second girder stationary phase are connected, the butt joint face of first girder and second girder is provided with the mounting groove that is used for installing the grid.

The further preferable scheme is as follows: the main beam is fixedly connected with vertical beams which are distributed at intervals along the axis of the main beam, the vertical beams are box-shaped beams, and the cross section of each vertical beam consists of a rectangle in the middle and convex arc-shaped parts at two ends.

The further preferable scheme is as follows: the boundary beam is a box beam, and the cross section of the boundary beam is rectangular.

The further preferable scheme is as follows: the single grid is a rectangular-section strip-shaped plate, the adjacent grid is a group, and each group of grid is connected through a transversely arranged opposite-pulling screw rod.

The further preferable scheme is as follows: hanging rings are fixedly arranged at the top ends of the two side beams.

The further preferable scheme is as follows: the upper stream side and the lower stream side of the two side beams are fixedly provided with sliding blocks, and rubber shock absorption cushion blocks are fixedly arranged between the sliding blocks and the side beams.

The further preferable scheme is as follows: the sliding block comprises grid grooves which are oppositely arranged, edge beams are correspondingly and slidably arranged in the grid grooves one by one, and the outer surfaces of the sliding blocks are contacted with the inner walls of the grid grooves.

Compared with the prior art, the utility model has the following beneficial effects: each girder comprises a first girder and a second girder which are symmetrically arranged relative to a vertical plane, the first girder and the second girder are box girders, grid bars are positioned on the butt joint surfaces of the first girder and the second girder, after two box girders Liang Kaicao, the grid bars are inlaid in the middle of the two box girders, the structural form can bear loads in a bidirectional manner and bear bidirectional water flow, the upstream surfaces of the two sides of the girders are arc-shaped, smooth transition can be realized with the rectangular part in the middle of the girders, the smoothness of water flow is obviously improved, and only one karman vortex is generated. The rubber shock-absorbing cushion blocks are fixedly arranged between the sliding blocks and the side beams, have shock-absorbing effect, and can eliminate fit gaps between the outer surfaces of the sliding blocks and the inner walls of the grid grooves and reduce vibration.

Drawings

FIG. 1 is a schematic diagram of a prior art structure in a top view;

FIG. 2 is a schematic diagram of a prior art water flow condition (arrows in the figure represent water flow direction);

FIG. 3 is a front view of the present utility model;

fig. 4 is A-A view of fig. 3.

Fig. 5 is a schematic view of the structure of the present utility model in a top view.

The parts in the figure are marked with: the side beam comprises side beams 1, main beams 2, first main beams 21, second main beams 22, grid bars 3, vertical beams 4, opposite-pulling screws 5, hanging rings 6, sliding blocks 7, rubber shock absorption cushion blocks 8 and grid grooves 9.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 3 to 5, the present utility model includes a main body of a trash rack, the main body of the trash rack includes side beams 1 located at two sides of the main body, the side beams 1 are vertically arranged, the two side beams 1 are fixedly connected through a transversely arranged main beam 2, a grid 3 is fixedly connected to the main beam 2, each main beam 2 includes a first main beam 21 and a second main beam 22 symmetrically arranged relative to a vertical plane, the first main beam 21 and the second main beam 22 are box beams, the cross section of the first main beam 21 is composed of a front convex arc portion (the convex arc portion refers to that the butt end of the arc portion is arranged in a convex manner relative to the rectangular portion, and is generally semicircular), the cross section of the second main beam 22 is composed of a front rectangular portion and a rear convex arc portion (generally semicircular), the first main beam 21 and the second main beam 22 are fixedly connected, the butt joint surface of the first main beam 21 and the second main beam 22 is provided with an assembling groove for installing the grid 3, namely, the grid 3 is located at the symmetrical center of the main beam 2, after two box Liang Kaicao, the two box beams 3 are embedded into the middle part of the main beam 2, the two box beams are smoothly transited to the two sides of the main beam 2, and the two-way vortex structure is smoothly and the two-way flow is realized, and the two-way transition is realized.

In order to improve the structural strength, the main beams 2 are fixedly connected with vertical beams 4 which are distributed at intervals along the axis of the main beams, the vertical beams 4 are box-shaped beams, and the section of each vertical beam 4 consists of a rectangle in the middle and convex arc-shaped parts at two ends of each vertical beam.

In order to improve the smoothness of water flow, the side beam 1 is a box beam, and the cross section of the side beam 1 is rectangular.

In order to facilitate implementation and consider the water flow condition and the structural strength, the preferable arrangement scheme of the grid bars 3 is that the single grid bar 3 is a rectangular-section strip-shaped plate, the adjacent grid bars 3 are a group, and each group of grid bars 3 is connected through a transverse opposite-pulling screw 5. The split screws 5 are arranged in a plurality of vertically spaced manner.

For the convenience of hoisting, the top ends of the two side beams 1 are fixedly provided with hoisting rings 6.

In specific implementation, the utility model further comprises oppositely arranged grating grooves 9, the side beams 1 are correspondingly and slidably arranged in the grating grooves 9, the sliding blocks 7 are fixedly arranged on the upstream side and the downstream side of the two side beams 1 for realizing sliding installation, and rubber shock absorption cushion blocks 8 are fixedly arranged between the sliding blocks 7 and the side beams 1 for reducing vibration, and the outer surfaces of the sliding blocks 7 are contacted with the inner walls of the grating grooves 9. It will be appreciated that, after installation, the rubber cushion block 8 has a certain amount of compression, which in this embodiment is designed to be 2mm, in order to bring the outer surface of the slider 7 into close contact with the inner wall of the grating groove 9.

Claims (7)

1. Pumped storage power station trash rack assembly, including the trash rack main part, the trash rack main part is including being located boundary beam (1) of its both sides, and boundary beam (1) vertical setting is connected through girder (2) stationary phase that transversely sets up between two boundary beam (1), fixedly connected with is grid (3) of vertical arrangement on girder (2), its characterized in that: every girder (2) all include first girder (21) and second girder (22) that are the symmetry setting for vertical plane, first girder (21) and second girder (22) are the box roof beam, the cross-section of first girder (21) comprises the rectangle at anterior evagination arc line and rear portion, the cross-section of second girder (22) comprises the evagination arc line at anterior rectangle and rear portion, first girder (21) and second girder (22) stationary phase are connected, the butt joint face of first girder (21) and second girder (22) is provided with the assembly groove that is used for installing grid (3).

2. The pumped storage power station trash rack assembly of claim 1, wherein: the girder (2) is fixedly connected with vertical beams (4) which are distributed along the axis at intervals, the vertical beams (4) are box-shaped beams, and the section of each vertical beam (4) is composed of a rectangle in the middle and convex arc lines at two ends.

3. The pumped storage power station trash rack assembly of claim 1, wherein: the side beam (1) is a box-shaped beam, and the cross section of the side beam (1) is rectangular.

4. The pumped storage power station trash rack assembly of claim 1, wherein: the single grid bars (3) are strip-shaped plates with rectangular cross sections, the adjacent grid bars (3) are in a group, and each group of grid bars (3) is connected through a transversely arranged opposite-pulling screw rod (5).

5. The pumped storage power station trash rack assembly of claim 1, wherein: hanging rings (6) are fixedly arranged at the top ends of the two side beams (1).

6. A pumped storage plant waste gate assembly as claimed in any one of claims 1 to 5, wherein: the upper stream side and the lower stream side of the two side beams (1) are fixedly provided with sliding blocks (7), and rubber shock absorption cushion blocks (8) are fixedly arranged between the sliding blocks (7) and the side beams (1).

7. The pumped storage power station trash rack assembly of claim 6, wherein: the side beams (1) are correspondingly arranged in the gate grooves (9) in a one-to-one sliding mode, and the outer surfaces of the sliding blocks (7) are contacted with the inner walls of the gate grooves (9).