CN202363845U - Anti-condensation device for non-segregated phase bus - Google Patents

Abstract

The utility model discloses an anti-condensation device for a common-box enclosed busbar, which comprises a control box, an explosion-proof temperature controller, an explosion-proof power supply junction box, several heat tracing cables, several explosion-proof intermediate junction boxes, and explosion-proof terminal junction boxes. The heating cable is connected in series through several explosion-proof intermediate junction boxes to form a total heating cable. The total heating cable is arranged at the bottom of the closed bus box of the common box. The probe is horizontally fixed at the bottom of the closed bus box of the common box, and the control box, explosion-proof temperature controller, explosion-proof power supply junction box, and total heating cable are connected in series to form a loop. The utility model has a simple structure, and the heating temperature in the closed busbar box of the common box can be controlled by the temperature probe, thereby effectively preventing condensation in the closed busbar box of the shared box and ensuring the insulation performance of the busbar.

Description

Common box closed busbar anti-condensation device

technical field

The utility model relates to a box-common closed busbar, in particular to an electric heating device inside the box-common closed busbar, which belongs to the technical field of electric equipment.

Background technique

Common box closed busbar is a current transmission device widely used between the generator lead-out line of 100MW and below and the low-voltage side of the main transformer, or between the low-voltage side of the plant transformer of 75MW and above units and the high-voltage power distribution device. It is a closed pipeline for power transmission. When the closed bus is running, the temperature of the air in the bus shell is generally higher than the temperature of the ring mirror. After the closed bus stops running, the temperature will slowly drop until it reaches the ambient temperature. During this process, the insulator and the bus conductor are easily Condensation is generated, thereby reducing the insulation performance of the busbar. If the closed busbar is put into operation again at this time, an accident may occur.

Contents of the invention

The purpose of the utility model is to provide an anti-condensation device for a common box closed busbar which has a simple structure and can effectively prevent condensation in the shared box closed busbar.

The utility model is realized through the following technical solutions:

An anti-condensation device for a closed bus bar in a common box, including a control box, an explosion-proof temperature controller, an explosion-proof power supply junction box, several heating cables, several explosion-proof intermediate junction boxes, and explosion-proof terminal junction boxes. Two explosion-proof intermediate junction boxes are connected in series to form a total heating cable. The total heating cable is arranged at the bottom of the closed busbar box of the common box. The end of the total heating cable is sealed by an explosion-proof terminal junction box. The explosion-proof temperature controller and the explosion-proof power supply junction box are respectively fixed. Below the closed bus box of the common box, the temperature probe of the explosion-proof temperature controller is fixed horizontally on the bottom of the closed bus box of the common box, and the control box, the explosion-proof temperature controller, the explosion-proof power supply junction box, and the total heating cable are connected in series to form a circuit .

The purpose of this utility model can also be further realized by the following technical measures.

In the aforementioned anti-condensation device for a closed busbar in a common box, the temperature adjustment range of the explosion-proof temperature controller is 0°C to 85°C.

In the above-mentioned anti-condensation device for closed busbars in a common box, the heat tracing cable is a single-phase constant power heat tracing cable.

The utility model has a simple structure, and a heating cable is arranged in the closed busbar box of the common box. After power-on, the heat generated by the heating cable is transferred to the closed busbar box of the common box, so that the temperature in the closed busbar box of the common box increases and the air humidity decreases. The temperature probe can control the heating temperature in the closed bus box of the common box, so as to effectively prevent the condensation phenomenon in the closed bus box of the shared box and ensure the insulation performance of the bus.

The advantages and characteristics of the invention are illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Description of drawings

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

Detailed ways

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

As shown in Figure 1, the utility model includes a control box 1, an explosion-proof temperature controller 2, an explosion-proof power junction box 3, two heating cables 4, an explosion-proof intermediate junction box 5, and an explosion-proof terminal junction box 6. The control box 1 is made of metal Armored structure, the surface is sprayed with plastic, the top of the cabinet is equipped with a rainproof cover, the cabinet body is connected from the bottom, the control box 1 can be hung on the wall or stand, and one control box 1 can control the heat tracing cables of multiple circuits 4. The heat tracing cable 4 is a single-phase constant power heat tracing cable. During field installation, the number of the heat tracing cables can be cut according to actual needs. Two heat tracing cables 4 are connected in series through the explosion-proof intermediate junction box 5 to form a total heat tracing cable. 40. The main heating cable 40 is arranged at the bottom of the closed bus box 7 of the common box, and the end of the main heating cable 40 is sealed by the explosion-proof terminal junction box 6, so that the fracture of the heating cable 4 is reliably insulated from the outside world. Explosion-proof temperature controller 2, explosion-proof The power junction box 3 is respectively fixed under the closed busbar box body 7 of the common box through stainless steel clamps 8 and bolts 9, and the explosion-proof temperature controller 2 is used to control the heating temperature in the closed busbar box body of the common box, and its temperature adjustment range is 0°C ~85°C, the set temperature of the explosion-proof temperature controller 2 is 60°C in the present embodiment, and the temperature probe 21 of the explosion-proof temperature controller 2 is horizontally fixed on the bottom of the closed bus box body 7 of the common box with adhesive tape, and the control box 1, The explosion-proof temperature controller 2, the explosion-proof power supply junction box 3, and the total heating cable 40 are connected in series in sequence to form a circuit.

In the utility model, the ZK circuit breaker controls the closing of the power supply, and each heating cable 4 is connected in parallel on the whole circuit, and each heating cable 4 is provided with an independent control button.

After the closed busbar of the common box stops running, turn on the power supply to energize the whole circuit, and the heat generated by the heating cable 4 is conducted to the closed busbar box body 7 of the common box, so that the temperature inside the closed busbar box body 7 of the common box rises, and the The temperature probe 21 senses the heating temperature in the closed bus box 7 of the common box. When the sensed temperature reaches the set temperature, the explosion-proof temperature controller 2 is automatically disconnected. When the sensed temperature is lower than the set temperature, the explosion-proof temperature controller 2 is turned off again. Turn on the heating, thereby effectively preventing condensation from occurring in the closed bus box body 7 of the common box.

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 (3)

1. An anti-condensation device for a closed busbar in a common box, characterized in that it includes a control box, an explosion-proof temperature controller, an explosion-proof power junction box, several heating cables, several explosion-proof intermediate junction boxes, explosion-proof terminal junction boxes, several A heating cable is connected in series through several explosion-proof intermediate junction boxes to form a total heating cable. The total heating cable is arranged at the bottom of the closed bus box of the common box. The explosion-proof power junction box is respectively fixed under the closed bus box of the common box, the temperature probe of the explosion-proof temperature controller is fixed horizontally at the bottom of the closed bus box of the common box, the control box, the explosion-proof temperature controller, the explosion-proof power junction box, the main The heating cables are connected in series in turn to form a loop. 2. The anti-condensation device for a common-box enclosed busbar according to claim 1, characterized in that: the temperature adjustment range of the explosion-proof temperature controller is 0°C to 85°C. 3. The anti-condensation device for a closed bus in a common box according to claim 1, wherein the heating cable is a single-phase constant power heating cable.

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