Vent hole structure suitable for pumped storage power station bulkhead gate shaft

Abstract

The utility model provides a vent hole structure suitable for a pumped storage power station bulkhead gate shaft, which comprises a steel pipe and a grating cover plate, the steel pipe is arranged on one side of a valve shaft, the steel pipe is arranged in a concrete layer through direct burial pouring and forms a vent hole, and the vent hole is communicated with the bottom of a water diversion pipeline of the valve shaft. A grating cover plate is arranged at the top of the steel pipe. The vent hole structure has the advantages that the vent hole structure is applied to a bulkhead gate hole of a pumped storage power station, construction is easy and convenient, plugging is safe and effective, on one hand, construction efficiency is greatly improved, on the other hand, safety can be improved, and meanwhile later overhaul and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic metal structures of pumped storage power stations, and mainly relates to a vent structure suitable for a gate well for maintenance in a pumped storage power station. Background Art

[0002] The design specification requires that when the submerged gate of the permanent building of the existing pumped storage power station cannot be fully ventilated, a vent must be set up close to the top of the orifice downstream of the gate, and its upper end should be separated from the hoist room. Therefore, under normal circumstances, the vent is a square hole, which is cast and demolded by hydraulic formwork. The end vent will be directly connected to the outside and a protective device will be set at the outlet. Its shortcomings are: due to the use of hydraulic formwork casting and demolding, the construction is inconvenient, the vent is not completely blocked, and it is not convenient for later inspection and maintenance. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a vent structure suitable for the maintenance gate well of a pumped storage power station.

[0004] The purpose of the utility model is achieved through the following technical solutions: A vent structure suitable for the inspection gate well of a pumped storage power station, comprising a steel pipe and a grille cover plate, a steel pipe is arranged on one side of the valve well, the steel pipe is arranged in a concrete layer by direct burial casting and forms a vent, the vent is connected to the bottom of the water diversion pipe of the valve well, and a grille cover plate is arranged on the top of the steel pipe.

[0005] Furthermore, a concave platform is reserved at the top of the steel pipe, and the two surfaces of the concave platform are respectively provided with angle steel A and angle steel B for edge finishing, so as to protect the concrete edge seam and keep the concave platform flat; the grille cover plate is arranged on the concave platform, and the concave platform and the grille cover plate are both square structures.

[0006] Furthermore, a rack base and ground ring anchor bars are provided in the concrete layer for fixing the rack and the electric hoist for manning.

[0007] Furthermore, the diameter of the vent hole should be large enough to facilitate ventilation and facilitate later maintenance personnel to go to the bottom of the water diversion pipe through the vent hole for inspection and maintenance.

[0008] The beneficial effects of the utility model are as follows: the utility model patent is applied to the maintenance gate hole of the pumped storage power station. It is a vent structure with relatively simple construction and safe and effective sealing. On the one hand, it greatly increases the construction efficiency, and on the other hand, it can improve safety and facilitate later inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a schematic diagram of the structure of the vent hole cover plate of the utility model.

[0011] Figure 3 for Figure 2 An enlarged schematic diagram of the middle ground ring anchor bar.

[0012] Explanation of the reference numerals: valve shaft 1, air vent 2, concrete layer 3, steel pipe 4, grille cover plate 5, angle steel A6, angle steel B7, ground ring anchor 8, rack 9. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0014] like Figure 1-Figure 3 As shown, a vent structure suitable for the gate well of a pumped storage power station includes a steel pipe 4 and a grille cover 5. A steel pipe 4 is provided on one side of the valve well 1. The steel pipe 4 is arranged in a concrete layer 3 by direct burial casting to form a vent 2. The vent 2 is connected to the bottom of the water diversion pipe of the valve well 1. A grille cover 5 is provided on the top of the steel pipe 4. In this embodiment, direct burial casting of steel pipes is adopted, and traditional vertical formwork support casting is not required, which can greatly speed up the construction efficiency. The diameter of the vent is 1.5m, which is conducive to ventilation, so that the later maintenance personnel can go to the bottom of the water diversion pipe through the vent to conduct inspection and maintenance.

[0015] As a preferred technical solution, a 10 cm concave platform is reserved at the top of the steel pipe 4, and the two surfaces of the concave platform are respectively provided with angle steel A6 and angle steel B7 (No. 50 angle steel) for edge trimming, which can protect the concrete edge seam and keep the concave platform flat. Specifically, one side of the angle steel A6 fits with the side wall of the concave platform, and the other side fits with the top surface of the concrete layer, and one side of the angle steel B7 fits with the bottom surface of the concave platform, and the other side abuts against the top surface of the steel pipe. The grille cover plate 5 is arranged on the concave platform to achieve complete sealing of the vents and the cover plate, wherein the concave platform and the grille cover plate 5 are both square structures.

[0016] As a preferred technical solution, a frame base and ground ring anchor bars 8 are provided in the concrete layer 3, that is, when the concrete on the top of the steel pipe is poured, the ground ring anchor bars 8 and the frame base are buried. When the flow channel or the vent needs to be inspected, the frame base and the ground ring anchor bars can be used to fix the frame 9 and the manned electric hoist.

[0017] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A vent structure suitable for a gate well for maintenance of a pumped storage power station, characterized in that: The invention comprises a steel pipe (4) and a grille cover plate (5). The steel pipe (4) is arranged on one side of a valve well (1). The steel pipe (4) is arranged in a concrete layer (3) by direct burial casting and forms an air vent (2). The air vent (2) is connected to the bottom of a water diversion pipe of the valve well (1). The grille cover plate (5) is arranged on the top of the steel pipe (4).

2. The vent structure suitable for the gate well of a pumped storage power station according to claim 1, characterized in that: A concave platform is reserved at the top of the steel pipe (4), and angle steel A (6) and angle steel B (7) are respectively provided on the two surfaces of the concave platform for edge finishing, so as to protect the concrete edge seam and keep the concave platform flat; the grille cover plate (5) is arranged on the concave platform, wherein the concave platform and the grille cover plate (5) are both square structures.

3. The vent structure suitable for the gate well of a pumped storage power station according to claim 2, characterized in that: The concrete layer (3) is provided with a bent frame base and ground ring anchor bars (8) for fixing the bent frame (9) and the electric hoist for manning.

4. The vent structure suitable for the gate well of a pumped storage power station according to claim 3, characterized in that: The diameter of the vent hole (2) should be large enough to facilitate ventilation and facilitate the later maintenance personnel to go to the bottom of the water diversion pipeline through the vent hole for inspection and maintenance.

Images