CN212063232U - Ventilation and heat dissipation device of prefabricated substation - Google Patents

Abstract

The utility model discloses a ventilation cooling device of prepackage type transformer substation, it includes the box, box upper portion is provided with the exhaust passage, the box lower part sets up air inlet shutter II, bottom half and ground inner room intercommunication, air inlet shutter II is through wind channel and ground inner room intercommunication, compare current ventilation structure, this device air current is down into cold wind, go up out the hot-blast structure, lower part air inlet system adopts labyrinth type structure, outside cold wind passes through in II entering bases of bottom air inlet shutter of case transformer lower part, rise to the case transformer inside through nature or forced circulation again and take out the heat, existing effect has improved the radiating efficiency, radiating structure does not receive the restriction of concrete ground again, it is clean to get into the inside air in basis, dry gas, the operational environment of dry-type transformer in the case transformer has been ensured.

Description

Ventilation and heat dissipation device of prefabricated substation

Technical Field

The utility model relates to a ventilation cooling device of prepackage type transformer substation, this structure is applicable to among the wind power generation and the photovoltaic power generation prepackage type transformer substation of configuration dry-type transformer.

Background

In recent years, as the price of the wind power generation and photovoltaic power generation on-grid electricity tends to be flat, the equipment cost shows a descending trend, and in order to further reduce the construction cost of a power station, larger and larger single installed capacity is more and more common (the adoption of large single capacity equipment is beneficial to reducing the total construction cost). The use amount of a single transformer with the capacity of 3700kVA for wind power (a 3.5MW fan is configured) and a single transformer with the capacity of 2800kVA (a 3MW group-series inverter is configured) for photovoltaic is increased.

Because the dry-type transformer has no risk of fire and oil leakage, the dry-type transformer is mostly adopted in some areas with higher environmental protection requirements. The dry type transformer is insulated by resin and can only be used indoors, so that the dry type transformer can only be placed inside a box-type transformer shell. The case becomes the shell and both will protect internal plant, avoids outside sand and wind, rain and snow to get into the case and becomes, will possess good heat-sinking capability again, avoids the inside temperature rise of transformer too high, has the equipment operation life that decreases. Be used for laying the concrete foundation that the case becomes, need consider 50 years once meeting flood and inside during the design and getting damp, often can't lay the shutter on every side, the case becomes the heat dissipation and can only realize through the air inlet shutter on the side wall, and the fan that gets into the box is not discharged promptly by effective heating, and the cooling effect is not good.

Disclosure of Invention

The technical problem is not solved, the utility model provides a ventilation cooling device of prepackage type transformer substation, the radiating effect is good.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the general prefabricated substation generally comprises a high-voltage chamber, a low-voltage chamber and a transformer chamber, wherein a dry-type transformer is placed in a box transformer chamber, and a foundation inner chamber is arranged at the bottom of the substation.

The utility model provides a ventilation cooling device of prepackage type transformer substation, it includes the box, and box upper portion is provided with the exhaust passage, and the box lower part sets up air inlet shutter II, and bottom half communicates with ground inner chamber, and air inlet shutter II passes through wind channel and ground inner chamber intercommunication.

The air outlet channel comprises an air outlet shutter I and is arranged on the wall of the box body and communicated with the air inside and outside the box body.

Still include axial fan, set up on I inboard box wall of air-out shutter.

The air outlet duct also comprises an ejecting eave air vent which is arranged around the ejecting eave.

The air duct is an arc-shaped air duct and comprises a partition plate, the partition plate separates an inner chamber of the box body from the arc-shaped air duct and is communicated with an air inlet shutter II and an inner chamber of the foundation, the partition plate is an arc-shaped plate, the arc-shaped air duct is communicated with air in the inner chamber of the foundation, and the arc-shaped air duct is designed by fluid, so that large wind resistance caused by a rectangular air duct is avoided.

The bottom of the box body is communicated with the inner chamber of the foundation through a double-layer stainless steel wire net.

The air inlet shutter II is a shutter special for an S-shaped container, a filter screen is additionally arranged in the shutter, and an air inlet channel is surrounded by blades with S-shaped sections.

When the capacity of the transformer is small or the load is low, the air in the transformer room is heated and rises and is emitted out from the top eave heat dissipation holes and the air outlet shutter I, cold air in the foundation inner room enters the transformer room from the double-layer stainless steel wire net at the lower part of the box body according to the siphon principle, cold air outside the box transformer enters the foundation inner room through the bottom air inlet shutter II and the arc-shaped air channel, and the air is circulated in a reciprocating manner to realize natural ventilation;

when the indoor portion temperature of transformer lasted rising, temperature controller control axial fan opened, and the inside velocity of flow accelerates, because transformer room bottom air inlet area is very big, and the windage is little, and a large amount of air gets into the transformer room via bottom air inlet shutter, stainless steel wire mesh, is forced out the case from top eaves louvre and air-out shutter and becomes the outside by axial fan, and the indoor temperature of transformer reduces rapidly.

The utility model has the advantages that:

compare current ventilation structure, this device air current presents down into cold wind, goes up out the hot-blast structure, lower part air intake system adopts labyrinth type structure, and outside cold wind rises to the case through nature or forced circulation and becomes inside and take out the heat through II entering foundations of bottom air inlet shutter of case change lower part, has both effectively improved the radiating efficiency, and radiating structure does not receive the restriction of concrete foundation again, and the air that gets into the basis inside is clean, dry gas, has ensured the operational environment of case change interior dry-type transformer.

Drawings

The attached drawing is the schematic diagram of the internal structure of the utility model;

1-box body, 2-air inlet shutter II, 3-arc air duct, 4-foundation inner chamber, 5-double-layer stainless steel wire net, 6-air outlet shutter I, 7-axial flow fan and 8-top eave vent hole.

Detailed Description

The general prefabricated substation generally comprises a high-voltage chamber, a low-voltage chamber and a transformer chamber, wherein a dry-type transformer is placed in the transformer chamber of a box body 1, and a foundation inner chamber 4 is arranged at the bottom of the substation.

The utility model provides a ventilation cooling device of prepackage type transformer substation, it includes box 1, and 1 upper portion of box is provided with the air outlet duct, and 1 lower part of box sets up air inlet shutter II 2, and 1 bottom of box communicates with ground inner chamber 4, and air inlet shutter II 2 passes through air duct and ground inner chamber 4 intercommunication.

The air outlet channel comprises an air outlet shutter I6 and is arranged on the wall of the box body 1 to communicate the air inside and outside the box body 1.

Still include axial fan 7, set up on 1 walls of I6 inboard boxes of air-out shutter.

The air outlet duct also comprises an upper eave vent hole 8 which is arranged around the upper eave.

The air duct be arc wind channel 3, it includes the baffle, the baffle separates 1 inner room of box and arc wind channel 3, communicates air inlet shutter II 2 and ground inner room 4, the baffle be the arc, arc wind channel 3, with 4 air intercommunication in the ground inner room, arc wind channel 3 adopts the fluid design, has avoided the great windage that the rectangle wind channel arouses.

The bottom of the box body 1 is communicated with the inner chamber 4 of the foundation through a double-layer stainless steel wire net 5.

The air inlet shutter II 2 is a shutter special for an S-shaped container, a filter screen is additionally arranged in the shutter, and an air inlet channel is surrounded by blades with S-shaped sections.

When the capacity of the transformer is small or the load is low, the air in the transformer room is heated and rises to be emitted from the top eave heat dissipation holes and the air outlet shutter I6, cold air in the foundation inner chamber 4 enters the transformer room from the double-layer stainless steel wire mesh 5 at the lower part of the box body 1 due to the siphon principle, cold air outside the box transformer enters the foundation inner chamber 4 through the bottom air inlet shutter II 2 and the arc-shaped air channel 3, and the air is circulated in a reciprocating manner to realize natural ventilation;

when the indoor portion temperature of transformer lasted rising, temperature controller control axial fan 7 opened, and the inside velocity of flow accelerates, because transformer room bottom air inlet area is very big, and the windage is little, and a large amount of air gets into the transformer room via bottom air inlet shutter, stainless steel wire mesh, is forced out the case from top eaves louvre and air-out shutter by axial fan 7 and becomes the outside, and the indoor temperature of transformer reduces rapidly.

One or more bottom air inlet shutters are arranged at the lower part of a wall body (or a wall body connecting a high-low pressure chamber and the outside) connecting a prefabricated transformer room of the transformer substation with the outside, the size of the bottom air inlet shutters can be about 1000mm x 400mm, and the specific size is equal to the air inlet area at the bottom of the transformer after accounting;

the above embodiments are not intended to limit the scope of the patent, and other designs that allow air to enter the ground from the air inlet holes around the box-type transformer are considered to be covered by this patent.

Claims (7)

1. The utility model provides a ventilation cooling device of prepackage type transformer substation, it includes the box, characterized by, and box upper portion is provided with the exhaust passage, and the box lower part sets up air inlet shutter II, and bottom half communicates with ground inner chamber, and air inlet shutter II communicates with ground inner chamber through the wind channel.

2. The ventilation and heat dissipation device of the preassembled transformer substation of claim 1, wherein the air outlet channel comprises an air outlet shutter I, and the air outlet shutter I is arranged on the wall of the box body and communicated with the air inside and outside the box body.

3. The ventilation and heat dissipation device of the preassembled transformer substation of claim 2, further comprising an axial flow fan arranged on the wall of the box body inside the air outlet shutter I.

4. The ventilation and heat dissipation device of the preassembled transformer substation of claim 1, wherein the air outlet duct further comprises a top eaves ventilation hole which is arranged around the top eaves.

5. The ventilation and heat dissipation device of the preassembled transformer substation of claim 1, wherein the air duct is an arc-shaped air duct and comprises a partition plate, the partition plate separates the inner chamber of the box body from the arc-shaped air duct and communicates the air inlet shutter II with the inner chamber of the foundation, the partition plate is an arc-shaped plate, and the arc-shaped air duct is communicated with the air in the inner chamber of the foundation.

6. The ventilation and heat dissipation device of the preassembled transformer substation of claim 1, wherein the bottom of the box body is communicated with the inner chamber of the foundation through a double-layer stainless steel wire mesh.

7. The ventilation and heat dissipation device of the preassembled transformer substation of claim 1, wherein the air inlet shutter II is a shutter special for an S-shaped container, and a filter screen is additionally arranged in the shutter.

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