CN201509021U - An anti-condensation combined box-type substation - Google Patents

Abstract

The utility model discloses an anti-condensation combined box-type substation, which is composed of a box (4), a high-voltage switchgear (1), a low-voltage switchgear (2), and a power transformer (3). A humidity sensor (6) is connected to both sides of the cabinet body (5) of the low-voltage switchgear (2), and a heater (8) is connected to both sides of the cabinet body (5). Connect the humidity controller (7), power supply (9), connect the humidity controller (7) to the power supply (9), connect the axial flow fan (10), humidity sensor (6), heater (8) in the cabinet (4) And the axial flow fan (10) is connected with the humidity controller (7). The utility model has a simple and practical structure, prolongs the service life of the equipment, reduces costs, prevents condensation from occurring, operates stably and reliably, and reduces the occurrence of accidents.

Description

An anti-condensation combined box-type substation

Technical field:

The utility model relates to an anti-condensation combined box-type substation, which belongs to the field of power system substation operation.

Background technique:

At present, existing combined box-type substations generally have the problems of cable interlayer leakage and box seal damage. The most important thing is that the ventilation inside the box-type substation is not good, and there is no seal between the box-type substation and the cable trench, which leads to direct moisture in the cable trench. In the box substation, there is no anti-condensation measures. Under the condition of low temperature, the condensation phenomenon in the cabinet is very serious. First, the inside of the cabinet condenses, and then the condensed water droplets converge into a flow, short-circuiting the current-carrying parts of the switchgear or Shorting the opening and closing contacts of the equipment will cause equipment tripping and automatic opening and closing failures, which will greatly reduce the service life of the equipment. The equipment should be used for more than 15 years. After this, the life of the equipment will not exceed 6 years at most, which increases the maintenance , operation and customer service scheduling workload, increasing the cost.

Utility model content:

The purpose of this utility model is to overcome the deficiencies of the above-mentioned prior art and provide an anti-condensation combined box type with simple and practical structure, prolonging the service life of equipment, reducing costs, preventing condensation, stable and reliable operation, and reducing accidents. substation.

The purpose of this utility model can be achieved through the following measures: an anti-condensation combined box-type substation, which is composed of a box body, a high-voltage switchgear, a low-voltage switchgear, and a power transformer, and is characterized in that the low-voltage switchgear A humidity sensor is connected to both sides of the cabinet, a heater is connected to both sides of the cabinet, a humidity controller and a power supply are connected to the cabinet, the humidity controller is connected to a power supply, an axial flow fan is connected to the cabinet, a humidity sensor, a heater and The axial flow fans are all connected with the humidity controller.

In order to further realize the purpose of the utility model, an exhaust orifice is provided at the axial flow fan outside the box.

In order to further realize the purpose of the utility model, the bottom plate of the low-voltage switchgear is provided with a plug.

Compared with the prior art, the utility model can produce the following positive effects: the utility model aims at the problem that moisture cannot be discharged in the combined box-type substation, and an axial flow fan and an exhaust hole are added on the side of the upper cabinet of the low-voltage feed unit to strengthen indoor ventilation , so that the moisture in the cabinet is discharged to the outside of the cabinet in time, so that the air humidity in the cabinet is reduced, and the condition of condensation cannot be reached, so as to prevent condensation from happening. A small heater, humidity sensor and humidity controller are installed in the cabinet, which can automatically start according to the humidity in the cabinet. When the humidity sensor detects that the temperature and humidity of the environment exceeds the set value, the humidity controller will give a contact output signal. Connect the axial flow fan and heater to ventilate and heat up, increase the temperature of the box, and destroy the conditions for condensation formation. When the humidity drops to a predetermined value, the heater will automatically stop heating to achieve the purpose of heating up and driving away the tide. The combined box-type substation operates stably and reliably, reducing the occurrence of accidents. And the cable trench and the bottom plate of the combined box-type substation are blocked to prevent moisture from entering the cabinet through the cable trench.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a right side view of Fig. 1 .

The specific embodiment: the specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing:

Embodiment: An anti-condensation combined box-type substation (see Figure 1, Figure 2), which is an improvement to the American box-type transformer, which consists of a box body 4, a high-voltage switchgear 1, a low-voltage switchgear 2, and a power transformer 3, the two sides of the cabinet 5 of the low-voltage switchgear 2 are respectively connected with a humidity sensor 6, and the two sides of the cabinet 5 are respectively connected with a heater 8, and the cabinet 5 is connected with a humidity controller 7, a power supply 9, and humidity The controller 7 is connected to the power supply 9, the box 4 is connected to the axial flow fan 10, and the axial flow fan 10 outside the box 4 is provided with an exhaust orifice 12, which can prevent small animals from entering the low-voltage switchgear 2 and damaging the equipment. The humidity sensor 6, the heater 8 and the axial flow fan 10 are all connected to the humidity controller 7. When the humidity sensor 6 detects that the temperature and humidity of the environment exceeds the set value, the humidity controller 7 will give a contact output signal, and the axis will be connected. Flow fan 10 and heater 8 make it ventilated and heat up. The bottom plate of the low-voltage switchgear 2 is provided with a blockage 11 to prevent moisture from entering the cabinet through the cable trench.

Claims (3)

1. anti-condensation composite type cabinet type transformer substation, it is by casing (4), high voltage switchgear (1), low voltage switchgear (2), power transformer (3) constitutes, the interior both sides of cabinet (5) that it is characterized in that described low voltage switchgear (2) respectively connect a humidity sensor (6), both sides in the cabinet (5) respectively connect a heater (8), connect humidity controller (7) in the cabinet (5), power supply (9), humidity controller (7) connects power supply (9), the interior connecting axle flow fan of casing (4) (10), humidity sensor (6), heater (8) and axial flow blower (10) all link to each other with humidity controller (7).

2. a kind of anti-condensation composite type cabinet type transformer substation according to claim 1 is characterized in that the outer axial flow blower of described casing (4) (10) locates to be provided with air draft orifice plate (12).

3. a kind of anti-condensation composite type cabinet type transformer substation according to claim 1 is characterized in that the base plate of described low voltage switchgear (2) is provided with shutoff (11).

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