CN100547868C - Buried-in non crystal alloy pre-installed transformer sub-station - Google Patents

Abstract

The invention discloses an embedded amorphous alloy prefabricated substation, which comprises a first box composed of a box wall and a cover plate made of waterproof building materials embedded in a ground pit with a high-voltage cabinet and a low-voltage cabinet inside , the pit also includes a second box body composed of a box wall and a box cover, the second box body is made of water seepage building materials, the transformer is arranged in the second box body, and the second box body The box cover of the body is provided with an air inlet and an air outlet, and an air inlet pipe connected to the waistline of the transformer is arranged at the air inlet, and a cable inlet and outlet hole is arranged on the wall of the second box body. The technical scheme of the invention realizes the underground installation of the power distribution equipment, ensuring that there is no power distribution facility on the ground. It is more convenient and flexible to put the transformer box and the high and low voltage distribution box in their respective pits, and the maintenance is also very convenient in the future. drainage system.

Description

Embedded amorphous alloy prefabricated substation

technical field

The invention relates to a substation, in particular to an embedded amorphous alloy pre-assembled substation.

Background technique

At present, most of the substations are set up on the ground. With the increase of the capacity of the substation, the volume of the substation is getting bigger and bigger. Although the appearance of these substations has been designed very beautifully, in today's society where land resources are decreasing, the substation The occupied land area cannot be ignored, so an underground substation that does not occupy land came into being, especially in some places that have strict requirements on the ground landscape, such as large stadiums, etc., it is a necessary basic requirement for the substation to be buried underground. However, in the existing underground substation (see Figure 1), the high-voltage cabinet 1, the low-voltage cabinet and the transformer 3 are all in a waterproof concrete prefabricated box 5, and the two sides of the box 5 are in the shape of a ladder with a large top and a small bottom. Embed the box body 5 in the pit 4 and seal it with the pit cover 6. In the middle of the box body 5, a partition 7 with a door and a ventilation gap 72 is provided in the middle of the box body 5 to connect the high and low voltage cabinets 1, 2 It is separated from the transformer 3 into a high and low voltage power distribution room 51 and a transformer room 52. On the pit cover plate 6 where the high and low voltage power distribution room 51 is located, there is an inlet and outlet 60 for maintenance personnel to enter. Its air inlet and outlet 61, 62 The pit cover 6 and the lower box wall are respectively arranged on the outer side of the high and low voltage power distribution room 51 and the outer side of the transformer 52 and sealed with iron fences. In case of rainy days, the rainwater can flow along the protrusions If the drainage system is not perfect enough, a large amount of accumulated water will enter the pit 4 and if it cannot be discharged smoothly, it will eventually enter the high and low voltage power distribution room 51 , the result will cause serious accidents such as short circuit.

Contents of the invention

The technical problem to be solved by the present invention is to provide an embedded amorphous alloy prefabricated substation aiming at the above-mentioned defects in the prior art.

In order to solve the above technical problems, the present invention adopts a buried amorphous alloy prefabricated substation, a kind of buried amorphous alloy prefabricated substation, including a waterproof type with high-voltage cabinet and low-voltage cabinet embedded in the pit. The first box body made of building materials is composed of a box wall and a cover plate. The pit also includes a second box body made of a box wall and a box cover. The second box body is made of water-permeable building materials , the second box is provided with a transformer, the cover of the second box is provided with an air inlet and an air outlet, and an air inlet pipe connected to the waistline of the transformer is provided at the air inlet, and in the first The wall of the second box body is provided with cable entry and exit holes.

In the above-mentioned embedded amorphous alloy prefabricated substation, a base with a cross-section larger than that of the transformer is provided on the inner bottom of the second box, and the transformer is arranged on the base.

The above-mentioned buried amorphous alloy prefabricated substation, wherein, the cover plate of the first box body is sealed with an inspection port for maintenance personnel to enter and exit, and the wall of the first box body is provided with a cable entry and exit port. holes, and the bottom of the first box is provided with a water collection tank and a cable channel.

In the above-mentioned embedded amorphous alloy prefabricated substation, a water level alarm device is also provided on the box wall at a certain position above the water collection tank.

In the above-mentioned embedded amorphous alloy prefabricated substation, the first box body and the second box body may be arranged in different pits.

The technical scheme of the present invention realizes the underground installation of power distribution equipment, ensuring that there are no power distribution facilities on the ground; the transformer box and the high and low voltage power distribution boxes are placed in their respective pits, the overall layout is more convenient and flexible, and future maintenance It is also quite convenient. Due to the use of a more mature underground distribution transformer, it can run safely and without maintenance in water for a long time, has good ventilation measures, and does not need to consider the drainage system, so the box of the transformer can be used as an unsealed water seepage type. It is beneficial to the heat dissipation of the transformer, and also saves the manufacturing cost. Secondly, the heat of the high and low voltage distribution box can be completely dissipated through the pit wall without designing the air inlet and outlet.

Description of drawings

Fig. 1 is the sectional view of the underground substation of prior art;

Fig. 2a, Fig. 2b are the top view and the front view diagram of the high and low voltage cabinet units of the embedded amorphous alloy prefabricated substation of the present invention;

Fig. 3a and Fig. 3b are the top view and the front view of the transformer unit of the embedded amorphous alloy prefabricated substation according to the present invention.

Detailed ways

Please refer to Fig. 2a and Fig. 2b, the buried type amorphous alloy prefabricated substation of the present invention comprises the first box body 1 by box wall 11 and cover plate 12 buried in the pit, by box wall 21 and box cover 22 The second box body 2, the high-voltage cabinet 3, the low-voltage cabinet 4 and the transformer 5 constituted, wherein,

The first box body 1 is made of waterproof building material, and this building material can be waterproof concrete, also can use other waterproof building materials to make of course, and high voltage cabinet 3 and low voltage cabinet 4 are arranged in the first box body, and its cover plate 12 is provided with There is a sealed inspection port 120 for maintenance personnel to enter and exit, and a cable inlet and outlet hole 110 is provided on the box wall 11. A water collection tank and a cable channel 10 are provided on the inner bottom of the box body 1. There is also a tank wall 11 at a certain position above the water collection tank 10. Equipped with a water level alarm device (not shown in the figure), the inspection port 120, the cable inlet and outlet hole 110, the box wall 11 and the cover plate 12 must be strictly sealed to ensure that the waterproof level reaches the first level. pit seepage, the sump 10 can collect seepage water, and when the water level reaches a certain height, the water level alarm device sends an alarm signal to notify the maintenance personnel to drain and overhaul or can automatically empty the accumulated water by installing an automatic drainage pump. After the power distribution equipment fails, maintenance Personnel enter the casing 1 through the man-in inspection port 120 and the escalator 13 to perform work.

The second box body 2 is made of water seepage type building material, and this material can be made on the spot by general brick and water seepage type concrete, and the inner bottom of box body 2 is provided with a cross section greater than transformer 5 cross section and is positioned at the base in the middle of the bottom. Seat 20, the transformer 5 is located on the base 20, on its case cover 22, an air inlet 220 and an air outlet 221 are arranged on both sides of the center line, and an air inlet 220 is provided with a connection to the transformer below the waistline. The air inlet pipe 222 is used to form a smooth air inlet and outlet passage above the top of the transformer 5 with the air outlet 221 to ensure that the temperature rise of the equipment is controlled to ensure the safe operation of the equipment. The material of the air inlet pipe 222 is the same diameter as the air inlet 220 Matching steel pipes are provided with cable inlet and outlet holes 210 on both side walls 21 of the second box body 2. When the transformer 5 is installed and troubleshooting is required, maintenance personnel enter the second box body 2 through the air outlet 221 and the escalator 23 Carry out work, all need not carry out sealing process between inlet and outlet 220,221, cable inlet and outlet hole 210 and case wall 21 and case cover 22, only need guarantee the antitheft safety of inlet and outlet 220,221.

The first box body 1 and the second box body 2 can be buried in different pits, that is, the first box body 1 and the second box body 2 can be arranged adjacently in the pit at the same place, or they can be arranged Buried separately in pits at different locations.

The technical scheme of the invention realizes the underground installation of the power distribution equipment, ensuring that there is no power distribution facility on the ground. It is more convenient and flexible to put the transformer box and the high and low voltage distribution box in their respective pits, and the maintenance is also very convenient in the future. drainage system.

The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent The technical solutions should also belong to the category of the present invention and should be defined by each claim.

Claims (5)

1. buried-in non crystal alloy pre-installed transformer sub-station, comprise imbed in the melt pit in establish that the water proof type construction material of high-voltage board and low-voltage cabinet makes first casing that constitutes by tank wall and cover plate, it is characterized in that, also comprise second casing that constitutes by tank wall and case lid in the described melt pit, this second casing is made by infiltration type construction material, be provided with transformer in described second casing, the case lid of described second casing is provided with air inlet and air outlet and is provided with a blast pipe that is communicated to below the transformer stringcourse at air inlet, and is provided with the cable manhole appendix on the tank wall of described second casing.

2. buried-in non crystal alloy pre-installed transformer sub-station according to claim 1 is characterized in that, the inner bottom part of described second casing is provided with the pedestal of a cross section greater than the transformer cross section, and described transformer is located on this pedestal.

3. buried-in non crystal alloy pre-installed transformer sub-station according to claim 1, it is characterized in that, be provided with the access hole of coming in and going out on the cover plate of described first casing hermetically for the maintainer, the tank wall of described first casing is provided with the cable manhole appendix, and the described first casing inner bottom part is provided with water leg and cable passage.

4. buried-in non crystal alloy pre-installed transformer sub-station according to claim 3 is characterized in that, also is provided with the water-level alarm device on the tank wall of described water leg top certain position.

5. buried-in non crystal alloy pre-installed transformer sub-station according to claim 1 is characterized in that, described first casing can be located in the different melt pits with second casing.

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