10kv moulding cable middle connector self-heating temperature controller and operation method

Abstract

The invention relates to a 10kV moulding cable middle connector self-heating temperature controller and an operation method. The temperature controller is formed by a temperature control portion and a mica heating ring (2). The temperature control portion comprises a k-type thermocouple (3) placed at the heating position and connected with voltage temperature input ports (6) of a temperature controller (1) through wires. The temperature controller is connected with the mica heating ring (2) through temperature control voltage output ports (7) via wires. The mica heating ring is utilized to heat to enable a mould to be uniformly heated at each angle, thereby guaranteeing internal insulation materials to be melted fully, and reaching production process standard of a middle mould head so as to guarantee the service life of a cable middle connector; the temperature is in digital display and is easy to observe; temperature control is precise; the heating speed is fast; the labour intensity of operating personnel can be reduced; human factors which influence the service life of the moulding cable middle connector are reduced; the temperature controller is light in weight and convenient to carry and install; and compared with the heating work of a traditional blast lamp, the cost is very low.

Description

technical field [0001] The invention relates to power system installation equipment, in particular to an automatic heating temperature controller for the intermediate head of a 10kV molded cable and an operation method. Background technique [0002] The middle head of the 10 kV molded cable uses the same material as the main insulation layer of the cable to restore the main insulation of the cable. Uneven heating) If the temperature is too high, the insulation is aging, and the temperature is too low, the insulation layer does not melt, which will cause the restored insulation layer not to be integrated with the main insulation layer of the cable. Overheating and aging of the insulation layer reduces the operating life of the cable. [0003] Taking the Donggang area of ​​Dandong as an example, there are currently 412 10kV cables with a length of 119 kilometers in the Donggang area, including 186 trunk cables, 96 kilometers, accounting for 80% of the total cable length. km ...

AI Technical Summary

Problems solved by technology

However, it takes a long time to make the middle head of the molded cable. Many construction teams are trying to catch up with the construction period, or the workers are trying to reduce the labor intensity during baking.

However, the baking time of the molded cable intermediate head is shortened, which causes the molded cable intermediate head to not be completely melted into one, or the cable insulation layer is heated unevenly, and some insulation layers are not melted.

Running for a long time will cause water tree discharge in the insulation layer, which will cause the middle head of the cable to fail.

Because the temperature is controlled by a thermometer, the heating temperature is not constant, which affects the life of the cable insulation material

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