Field-welding-free novel assembled steel grating for oil pit of transformer substation

Abstract

A novel transformer substation oil pit assembly type steel grating free of field welding comprises a bottom plate, and the bottom plate is connected with the bottom of an oil pit through bolts. At least one square steel pipe column is arranged on the bottom plate, a square steel pipe beam is connected above the square steel pipe column, and a top steel grating is arranged on the square steel pipe beam. A T-shaped steel beam is arranged between every two adjacent square steel pipe columns, and a lower steel grating is arranged above the T-shaped steel beams. The two ends of the T-shaped steel beam are welded to the square steel pipe column through welding plates. A top plate is arranged at the top of the square steel pipe column, two thin steel plates are arranged on the top plate, a square steel pipe beam is placed between the thin steel plates, and the thin steel plates and the square steel pipe beam are connected through fastening bolts. Only splicing is needed on site, on-site welding is not needed, dismounting can be carried out according to needs after installation is completed, the construction period is short, efficiency is high, maintenance is convenient, and energy conservation and environment protection are achieved.

Description

Technical Field

[0001] This utility model relates to a new type of prefabricated steel grating for substation oil pits that does not require on-site welding, and is suitable for steel gratings for transformer and reactor oil pits in substations of various voltage levels. Background Technology

[0002] To facilitate maintenance and reduce fire hazards, one or two layers of steel grating are typically laid in the oil pits of transformers and reactors in substations both domestically and internationally. Currently, concrete supports are commonly used for the steel grating during its installation in substation oil pits. These concrete supports require curing before further construction, resulting in a long construction period, complex processes, and significant construction waste during removal. This necessitates substantial manpower, material resources, and time investment, while also causing environmental pollution. Furthermore, the current method of laying steel grating involves on-site welding, requiring welders to perform individual welding operations. Welding quality heavily relies on the welder's skill level, leading to low efficiency, significant quality fluctuations, substantial pollution, and a massive workload with high labor costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a new type of prefabricated steel grating for substation oil pits that eliminates the need for on-site welding, addressing the problems of long construction cycle, low construction efficiency, serious pollution, and difficulty in guaranteeing welding quality of existing steel gratings for substation oil pits.

[0004] The specific technical solution of this utility model is as follows:

[0005] A novel prefabricated steel grating for substation oil pits that eliminates the need for on-site welding includes a base plate connected to the bottom of the oil pit by bolts; at least one square steel pipe column is installed on the base plate, a square steel pipe beam is connected above the square steel pipe column, and a top steel grating is installed on the square steel pipe beam.

[0006] A T-shaped steel beam is installed between two adjacent square steel pipe columns, and a lower steel grating is installed above the T-shaped steel beam.

[0007] The two ends of the T-shaped steel beam are welded to the square steel pipe column via welding plates.

[0008] The square steel pipe column is topped with a top plate, on which two thin steel plates are placed. A square steel pipe beam is placed between the thin steel plates, and the thin steel plates and the square steel pipe beam are connected by fastening bolts.

[0009] The beneficial effects of this utility model are as follows: all components of the new prefabricated steel grating for substation oil pits that does not require on-site welding can be manufactured in the factory, and only assembly is required on site. No on-site welding is required. After installation, it can be disassembled as needed. The construction cycle is short, the efficiency is high, the maintenance is convenient, and it is energy-saving and environmentally friendly. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of a steel support pier;

[0011] Figure 2 This is a schematic diagram of the steel grating arrangement;

[0012] Figure 3 for Figure 1 View 1-1 in the middle;

[0013] Figure 4 for Figure 1 View 2-2. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1 As shown, a novel prefabricated steel grating for substation oil pits, requiring no on-site welding, includes a base plate 1 connected to the bottom of the oil pit by bolts 4. At least one square steel pipe column 2 is installed on the base plate 1, and a T-shaped steel beam 5 is installed between two adjacent square steel pipe columns 2. A lower steel grating 8 is installed above the T-shaped steel beam 5. A square steel pipe beam 3 is connected above the square steel pipe column 2, and a top steel grating 7 is installed on the square steel pipe beam 3. When a single-layer steel grating is required, the T-shaped steel beam 5 in the middle of the square steel pipe column 2 can be removed.

[0017] Furthermore, a top plate 10 is provided on the top of the square steel pipe column 2, and two thin steel plates 9 are provided on the top plate 10. A square steel pipe beam 3 is placed between the thin steel plates 9, and the thin steel plates 9 and the square steel pipe beam 3 are connected by fastening bolts 11.

[0018] Furthermore, the base plate 1 can be a single piece, with multiple square steel pipe columns 2 installed on the entire base plate. Alternatively, the base plate 1 can be multiple smaller base plates, with one square steel pipe column 2 installed on each base plate 1. Depending on the size of the oil pit, the square steel pipe columns 2 are arranged at certain intervals within the oil pit.

[0019] Furthermore, the two ends of the T-shaped steel beam 5 are welded to the square steel pipe column 2 via welding plates 6.

[0020] It should be noted that the connection between the base plate 1, the welding plate 6 and the square steel pipe column 2, and the connection between the thin steel plate 9 and the top plate 10 are all factory welded.

[0021] The top steel grating 7 and the lower steel grating 8 are manufactured at intervals according to the size of the square steel pipe column in the factory. After arriving at the site, they can be placed directly on the square steel pipe beam 3 and the T-shaped steel beam 5.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A novel prefabricated steel grating for substation oil pits that eliminates the need for on-site welding, characterized in that: Includes a base plate (1), which is connected to the bottom of the oil pit by bolts (4); at least one square steel pipe column (2) is provided on the base plate (1), and a square steel pipe beam (3) is connected above the square steel pipe column (2), and a top steel grating (7) is provided on the square steel pipe beam (3).

2. The novel prefabricated steel grating for substation oil pits that requires no on-site welding, as described in claim 1, is characterized in that: A T-shaped steel beam (5) is set between two adjacent square steel pipe columns (2), and a lower steel grating (8) is set above the T-shaped steel beam (5).

3. The novel prefabricated steel grating for substation oil pits that requires no on-site welding, as described in claim 2, is characterized in that: The two ends of the T-shaped steel beam (5) are welded to the square steel pipe column (2) through welding plates (6).

4. The novel prefabricated steel grating for substation oil pits that requires no on-site welding, as described in claim 1, is characterized in that: The top of the square steel pipe column (2) is provided with a top plate (10), and two thin steel plates (9) are provided on the top plate (10). A square steel pipe beam (3) is placed between the thin steel plates (9), and the thin steel plates (9) and the square steel pipe beam (3) are connected by fastening bolts (11).

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