Voltage guiding device, sealing device and method for making insulating hydrophilic coating

Abstract

The invention discloses a voltage guiding device, an enclosing apparatus, and a manufacturing method of an insulating hydrophilic coating. The surface of the voltage guiding device is coated with an insulating hydrophilic coating material. The voltage guiding device comprises a lead, an external mounting flange, an internal mounting flange, an outer side grading shield, and an inner side grading shield. The lead penetrating the wall body of the enclosing apparatus is used for guiding a needed voltage into the inside of the enclosing apparatus. The external mounting flange is arranged at the outer side of the wall body and a screw hole for fixation is arranged at the connection part of the external mounting flange and the outer side of the wall body; and the external mounting flange is fixedly connected with a guiding rod and the wall body. The internal mounting flange is arranged at the inner side of the wall body and a screw hole for fixation is arranged at the connection part of the internal mounting flange and the inner side of the wall body; and the internal mounting flange is fixedly connected with a guiding rod and the wall body. The outer side grading shield is connected to the external mounting flange detachably in a covering mode. The inner side grading shield is connected to the internal mounting flange detachably in a covering mode. Therefore, a high voltage can be guided securely to carry out high-humidity environment voltage testing and thus water drops absorbed to the surface can be laid to form a water film in a wetting mode, thereby preventing a corona discharging phenomenon caused by the water drops effectively.

Description

technical field [0001] The invention relates to the field of electrical technology and the technical field of new electrical materials, in particular to a method for manufacturing a voltage guiding device, a sealing device and an insulating hydrophilic coating. Background technique [0002] In the field of power system transmission and distribution or aerospace, it is inseparable from the study of electrical phenomena in high humidity environments. The electrical phenomena of various electrical equipment will be affected by the electromagnetic environment, and the influence of environmental humidity has attracted much attention. [0003] Taking the voltage experiment in a high humidity environment as an example, the voltage is usually introduced through a high-voltage wall bushing, which is mostly used in large-scale high-humidity environment simulation systems. The wall bushing is mostly used to guide high voltage from one end of the wall to the other. Withstand higher vol...

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Problems solved by technology

However, in a high-humidity environment, water droplets are easy to condense on the insulating surface of the wall bushing, which will cause partial discharge or even flashover within the rated voltage level

Moreover, the length of the wall bushing is related to the size of the umbrella surface and the corresponding voltage level. If the voltage level is increased, the weight will increase, the occupied area will become larger, and the installation will be difficult.

[0004] In addition, in the small high humidity test, there is also a direct use of the cable to introduce the voltage, but when the cable is used to introduce the voltage, first of all, the safety cannot be completely guaranteed, and partial discharge is very easy to occur at the end of the cable, especially in a high humidity environment.

Secondly, direct use of cables to introduce voltage will also cause condensation on the insulating surface, partial discharge or even flashover

[0005] In addition, there are still many experimental devices that use ordinary conductors to introduce voltage, but if bare conductors are used directly, it is found through experiments that water droplets are still easy to condense on the surface in high humidity environments, and partial discharge is extremely easy to occur

[0006] For the problem of water droplets on the surface caused by the above voltage introduction method, the existing solution is to interrupt the power supply for cleaning after completing an experiment

However, experiments have proved that when the humidity of the experimental environment is high (above 60%), water droplets can condense on the surface of the device very quickly. safety

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