CN211548987U - underground substation structure - Google Patents

Abstract

The utility model discloses an underground substation structure, which comprises a building raft foundation, an underground continuous wall and an inner lining wall. The building raft foundation is arranged in the outer area of the underground substation structure, and the inner lining wall is arranged in the building. On the inner side of the raft foundation, a main transformer room is arranged on the building raft foundation, an outdoor sunken courtyard is arranged on the outer side of the main transformer room, and a fire fighting pool is arranged below the outdoor sunken courtyard. The utility model can effectively solve the problem of water leakage caused by the hoisting of the equipment, and at the same time, it is more convenient to hoist the equipment during the later operation and maintenance; because a whole wall is facing the outdoors, the ventilation in the station can reach the ventilation conditions of the ground substation, and the ventilation facilities and the cost of ventilation can be reduced. Ventilation ducts reduce floor height, cost and construction safety risks; the joint design of the fire pool and the station body saves pool land.

Description

underground substation structure

technical field

The utility model relates to the technical field of underground substations, in particular to an underground substation structure.

Background technique

In urban areas, due to urban planning requirements, some substations have to be built underground. The underground substation is usually an underground three-story structure, and the third underground layer is the cable layer and the main transformer oil pool. Other electrical equipment rooms are arranged on the first and second basement floors.

A large number of large electrical equipment are arranged in the substation, and the electrical equipment usually needs to be hoisted and transported as a whole, so it is necessary to set up a special hoisting space and hoisting channel for the equipment. In addition, the electrical equipment generates a large amount of heat and needs good ventilation. The above-ground substations generally have good ventilation conditions, but the ventilation conditions of the underground substations are generally poor, and special ventilation facilities and ventilation pipes need to be set up.

Referring to Figure 1, the design scheme for the existing underground substation includes setting an underground diaphragm wall 2 within the outer range of the current station body, then excavating to the bottom of the pit and casting the integral raft foundation 1 and the building lining wall 3. The main transformer room 4 is set on the raft foundation 1 of the above-mentioned building, the equipment hoisting hole 5 is set on the top of the main transformer room 4, the ventilation duct is arranged in the corridor on the right side of the main transformer room 4, and the floor height is increased to meet the requirements of equipment hoisting and transportation. Requirements for the arrangement of ventilation ducts.

Under the existing technical conditions, the method of setting hoisting holes above the main transformer room is generally adopted to meet the equipment hoisting requirements, but it is easy to cause water leakage at the top and cause serious damage to the electrical equipment. The ventilation scheme generally adopts the method of setting up a special ventilation machine room, and setting ventilation pipes in the corridor and electrical room, but this will increase the height of the room and increase the depth of the entire underground substation, which will further increase the project cost and bring more construction safety hazards.

Those skilled in the art are devoted to solving the above-mentioned technical defects.

Utility model content

In view of the above-mentioned defects of the prior art, the technical purpose of the present invention is to solve the technical defects in the hoisting and ventilation of the existing underground substation equipment.

In order to achieve the above technical purpose, the utility model provides an underground substation structure, including a building raft foundation, an underground continuous wall and an inner lining wall, the building raft foundation is arranged on the outer side of the underground substation structure, and the inner lining is provided. The wall is arranged on the inner side of the building raft foundation, the main transformer room is arranged on the building raft foundation, the outer side of the main transformer room is arranged with an outdoor sunken courtyard, and the fire protection is arranged below the outdoor sunken courtyard A pool, the outdoor ground of the outdoor sunken courtyard is provided with an underground courtyard ground, and the outer wall of the main transformer room is provided with main transformer transportation holes and ventilation shutters.

Preferably, the lining wall and the main structure are connected by a concrete horizontal support.

Preferably, the main transformer room and the ground of the underground courtyard are both arranged on the second underground floor.

Preferably, a fire-fighting pool is arranged at the bottom three-storey part of the outdoor sunken courtyard.

The beneficial effects of the present utility model:

Due to the above-mentioned structural design, the utility model can effectively solve the problem of water leakage caused by the hoisting of the equipment, and at the same time, it is more convenient to hoist the equipment during the later operation and maintenance; since a whole wall faces the outdoors, the ventilation in the station can reach the ventilation conditions of the ground substation. , reduce ventilation facilities and ventilation pipes, reduce floor height, reduce construction cost and construction safety risks; the joint design of fire pool and station body saves pool land.

Description of drawings

1 is a schematic cross-sectional structure diagram of an underground substation in the prior art;

FIG. 2 is a schematic cross-sectional structure diagram of an underground substation of the present invention.

In the picture: 1 building raft foundation, 2 underground diaphragm wall, 3 inner lining wall, 4 main transformer room, 5 main transformer hoisting hole, 6 main transformer transportation hole, 7 ventilation shutter, 8 fire pool, 9 concrete horizontal support, 10 Underground courtyard ground, 11 outdoor sunken courtyards, 12 ventilation pipes.

Detailed ways

The concept, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Example:

As shown in Figure 2, an underground substation structure, the underground substation structure includes a building raft foundation 1, an underground continuous wall 2 and an inner lining wall 3, the building raft foundation 1 is set in the outer range of the underground substation structure, and the inner lining wall 3 is arranged on the inner side of the building raft foundation 1, the main transformer room 4 is arranged on the building raft foundation 1, the outside of the main transformer room 4 is arranged with an outdoor sunken courtyard 11, and a fire fighting pool 8 is arranged below the outdoor sunken courtyard 11 , The outdoor ground of the outdoor sunken courtyard 11 is provided with an underground courtyard ground 10, and the outer wall of the main transformer room 4 is provided with a main transformer transportation hole 6 and a ventilation shutter 7 to meet the equipment hoisting, transportation and ventilation requirements.

Specifically, the ventilation shutters 7 face the outdoors directly to meet the ventilation and heat dissipation requirements of the equipment and reduce the configuration of ventilation facilities and ventilation ducts in the station.

Specifically, the lining wall 3 and the main structure are connected by a concrete horizontal support 9 to ensure the lateral stiffness of the wall.

Specifically, the main transformer room 4 and the underground courtyard ground 10 are both arranged on the second underground floor.

Specifically, a fire-fighting pool 8 is provided at the lowermost underground three-story part of the outdoor sunken courtyard 11 .

Specifically, since the main transformer room 4 is arranged on the second underground floor, and the ground 10 of the underground courtyard is also set on the second underground floor, the fire fighting pool 8 can be arranged on the third underground floor of the 11 outdoor sunken courtyards. For ordinary underground stations, the fire fighting pool 8 should be set separately, but in this scheme, the fire pool and the station body are jointly designed to save the pool land.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims. .

Claims (4)

1. The utility model provides an underground substation structure, includes building raft foundation (1), underground continuous wall (2) and interior welt (3), its characterized in that: building raft foundation (1) sets up in this underground substation structure outside scope, interior welt (3) set up the inboard of building raft foundation (1), be provided with main transformer room (4) on building raft foundation (1), the outside of main transformer room (4) is provided with outdoor courtyard (11) of sinking, the outdoor below of sinking courtyard (11) is provided with fire pond (8), the outdoor ground of outdoor courtyard (11) of sinking is provided with secret courtyard ground (10), be provided with main transformer transport hole (6) and ventilation shutter (7) on the outer wall of main transformer room (4).

2. An underground substation structure according to claim 1, characterized in that: the inner lining wall (3) is connected with the main structure through a concrete horizontal support (9).

3. An underground substation structure according to claim 1, characterized in that: the main transformer chamber (4) and the underground courtyard ground (10) are both arranged on two underground layers.

4. An underground substation structure according to claim 3, characterized in that: and a fire pool (8) is arranged at the underground three-layer position at the lowest part of the outdoor sinking yard (11).

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