CN206271499U - The main transformer cooling system of power transformer - Google Patents

Abstract

The utility model discloses a heat dissipation system for a main transformer of a power transformer, which comprises a main transformer room, a main transformer, an air outlet device, an air inlet device, and an air supply device. The air outlet device is arranged on the wall of the main transformer room. And the height is higher than the main transformer, the air outlet device includes a plurality of first louvers and second louvers, the second louvers are arranged above the first louvers, and the air inlet device is arranged on On the wall of the main transformer room, the air inlet device is lower than the main transformer, and the air supply device includes a plurality of first fans and second fans, the first fans are arranged below the main transformer, and the first fans blow air. In the upward direction, an opening is provided on the second louver, and the second fan is embedded in the opening position of the second louver for exhausting air outward. The utility model solves the problem that the high temperature in the transformer room causes the transformer to be out of operation and affects the safety of electric power operation.

Description

Main Transformer Heat Dissipation System of Power Transformer

technical field

The utility model and a power transformer, in particular to a heat dissipation system for a main transformer of a power transformer, belong to the technical field of power equipment.

Background technique

With the development of social economy, the construction land in urban areas is becoming more and more scarce. In order to save land, there are more and more indoor substations. Moving the main transformer indoors can not only make full use of the space advantages of multi-storey buildings to save land, but also prevent the noise of the main transformer from affecting the lives of residents around the substation. However, since the main transformer generates a lot of heat during operation, after it is moved into the room, if the cooling measures are not appropriate, the temperature of the main transformer may be too high; especially in summer, the ambient temperature is high, the load is heavy, the heat cannot be discharged, and there is even a risk of being shut down. , seriously affecting power safety.

At present, the general transformer is equipped with heat dissipation cooling device cooling fins, the hot oil inside the transformer circulates through the cooling device, and finally dissipates heat to the air through convection, radiation and conduction. However, if the transformer is operated in an environment with high temperature for a long time, it will be difficult for the heat generated by the normal loss of the transformer to be dissipated into the atmosphere, causing the resistance of the coil conductor to increase as the temperature rises, resulting in more losses and heat energy forming a vicious circle , causing the temperature of the transformer to rise abnormally, seriously endangering the normal operation of the power generation equipment.

Utility model content

The purpose of the utility model is to provide a heat dissipation system for the main transformer of a power transformer, which solves the technical problem that the transformer is forced to shut down due to high indoor temperature of the transformer and affects the safety of electric power operation.

The purpose of this utility model is achieved through the following technical solutions:

A main transformer heat dissipation system of a power transformer, comprising a main transformer room 1, a main transformer 2, an air outlet device, an air inlet device 3, and an air supply device, the air outlet device is arranged on the wall of the main transformer room 1, and Higher than the main transformer 2, the air outlet device includes a plurality of first louvers 4 and second louvers 5, the second louvers 5 are arranged above the first louvers 4, and the inlet The wind device 3 is arranged on the wall of the main transformer room 1, the air inlet device 3 is lower than the main transformer 2, and the air supply device includes a plurality of first fans 6 and second fans 7, and the first fan 6 It is arranged below the main transformer 2, the blowing direction of the first fan 6 is upward, and the opening 8 is provided on the second louver 5, and the second fan 7 is embedded in the opening 8 of the second louver 5 position, for exhausting air outwards.

The purpose of this utility model can also be further realized through the following technical measures:

In the heat dissipation system of the main transformer of the aforementioned power transformer, the air outlets of the first fan 6 and the second fan 7 have built-in filters and grilles.

In the heat dissipation system of the main transformer of the aforementioned power transformer, the first fan 6 is arranged symmetrically on both sides of the main transformer 2 .

In the heat dissipation system of the main transformer of the aforementioned power transformer, the first louver 4 and the second louver 5 are electric louvers.

The main transformer heat dissipation system of the aforementioned power transformer also includes a transformer temperature sensor, a main transformer room temperature sensor, and a main control circuit. The transformer temperature sensor detects the temperature of the main transformer 2, and the main transformer room temperature sensor detects the temperature of the main transformer room 1. Ambient temperature, the transformer temperature sensor and the main transformer room temperature sensor are connected to the main control circuit, and the main control circuit is connected to the first fan 6 and the second fan 7 to control the start and stop of the first fan 6 and the second fan 7 , the main control circuit is connected with the first louver 4 and the second louver 5 to control the opening and closing of the first louver 4 and the second louver 5 .

Compared with the prior art, the beneficial effects of the utility model are: it fundamentally solves the problem that the transformer is forced to shut down due to the high temperature in the transformer room, which affects the safety of power operation; To prevent foreign matter from entering the air duct, the design of electric shutters can be automatically opened and closed to enhance air circulation and heat dissipation.

Description of drawings

Fig. 1 is a structural diagram of the main transformer cooling system of the present invention;

Fig. 2 is the main control circuit diagram of the utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

As shown in Figure 1, the main transformer heat dissipation system of the power transformer includes a main transformer room 1, a main transformer 2, an air outlet device, an air inlet device 3, and an air supply device. The air outlet device is arranged on the wall of the main transformer room 1. On the surface, and the height is higher than the main transformer 2, the air outlet device includes a plurality of first louvers 4 and second louvers 5, and the first louvers 4 and second louvers 5 are electric Shutters, the second shutters 5 are arranged above the first shutters 4, the air inlet device 3 is arranged on the wall of the main transformer room 1, the air inlet device 3 is lower than the main transformer 2, so The air supply device includes a plurality of first fans 6 and a second fan 7, the plurality of first fans 6 are symmetrically arranged below the main transformer 2, the blowing direction of the first fans 6 is upward, and the second louvers 5 An opening 8 is provided on the top, and the second fan 7 is embedded in the position of the opening 8 of the second louver 5 for exhausting air outside.

Preferably, filter screens and grilles are built in the air outlets of the first fan 6 and the second fan 7 to effectively prevent foreign matter from entering the air duct.

The main transformer cooling system of the utility model power transformer also includes a transformer temperature sensor, a main transformer room temperature sensor, and a main control circuit. The transformer temperature sensor detects the temperature of the main transformer 2, and the main transformer room temperature sensor detects the temperature of the main transformer room. 1 ambient temperature, the transformer temperature sensor and the main transformer room temperature sensor are connected to the main control circuit, and the main control circuit is connected to the first fan 6 and the second fan 7 to control the temperature of the first fan 6 and the second fan 7 Start and stop, the main control circuit is connected with the first louver 4 and the second louver 5 to control the opening and closing of the first louver 4 and the second louver 5 .

When the temperature signal of the transformer temperature sensor collected by the main control circuit is higher than the set threshold, the main control circuit starts the first fan 6 to dissipate heat from the transformer; when the temperature signal of the transformer temperature sensor is lower than the set threshold, the main control circuit The control circuit closes the first fan 6, and the transformer dissipates heat naturally.

When the temperature signal of the main transformer room temperature sensor collected by the main control circuit is higher than the set threshold, the second fan 7 is started, and the first louver 4 and the second louver 5 are closed simultaneously to dissipate heat from the main transformer room; When the temperature signal of the temperature sensor of the main transformer room is lower than the set threshold, the second fan 7 is turned off, and the first louver 4 and the second louver 5 are opened at the same time, so that the main transformer room is in a state of natural heat dissipation.

In addition to the above-mentioned embodiments, the utility model can also have other implementation modes, and all technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of protection required by the utility model.

Claims (5)

1. a main transformer heat dissipation system of a power transformer, is characterized in that, comprises main transformer room, main transformer, air outlet device, air inlet device, air supply device, and described air outlet device is arranged on the wall of main transformer room , and the height is higher than the main transformer, the air outlet device includes a plurality of first louvers and second louvers, the second louvers are arranged above the first louvers, and the air inlet device is set On the wall of the main transformer room, the air inlet device is lower than the main transformer, and the air supply device includes a plurality of first fans and second fans, the first fans are arranged below the main transformer, and the first fans The blowing direction is upward, the second louver is provided with an opening, and the second fan is embedded in the opening of the second louver for exhausting air outward. 2. The heat dissipation system for the main transformer of a power transformer according to claim 1, wherein the air outlets of the first fan and the second fan have built-in filter screens and grilles. 3. The heat dissipation system for a main transformer of a power transformer according to claim 1, wherein a plurality of first fans are arranged symmetrically on both sides of the main transformer. 4. The heat dissipation system for a main transformer of a power transformer according to claim 1, wherein the first louver and the second louver are electric louvers. 5. The main transformer cooling system of power transformer as claimed in claim 4, is characterized in that, also comprises transformer temperature sensor, main transformer room temperature sensor, main control circuit, and described transformer temperature sensor detects the temperature of main transformer, and described The main transformer room temperature sensor detects the ambient temperature of the main transformer room, the transformer temperature sensor and the main transformer room temperature sensor are connected to the main control circuit, and the main control circuit is connected to the first fan and the second fan to control the first fan, For the start and stop of the second fan, the main control circuit is connected with the first louver and the second louver to control the opening and closing of the first louver and the second louver.