Waterproof type sealing box for on-line monitoring on high voltage electric appliance

Abstract

The invention discloses a waterproof type sealing box for the on-line monitoring on a high voltage electric appliance, and aiming at solving the technical problem of overcoming the defects of a conventional on-site monitoring device in a background technique. According to the design idea, a double-layer sealing structure which consists of an outer box and an inner box is adopted, wherein the outer box is used for preventing dampness and rust and is convenient to open; the inner box is used for preventing electromagnetic interferences; a sensor component is mounted inside the inner box; a desiccant layer is arranged between the inner box and the outer box; a signal line is led out from a waterproof terminal. According to the technical scheme, the box comprises an outer box body, an inner box body, an outer box cover, an outer box sealing strip, an inner box cover and an inner box sealing strip, wherein the inner box body is arranged inside the outer box body; the desiccant layer is arranged between the inner box body and the outer box body; the inner box cover is arranged on the inner box body; the inner box sealing strip is arranged between the inner box cover and the inner box body; the outer box cover is arranged on the outer box body; the outer box sealing strip is arranged between the outer box cover and the outer box body; the outer box body and the inner box body are both respectively provided with working holes through which a power supply line and a signal line pass.

Description

technical field [0001] The invention relates to a sealed box, in particular to a waterproof sealed box used for an on-site monitoring device of a high-voltage electrical appliance on-line system. Background technique [0002] With the rapid development of large and medium-sized cities in my country and the requirements of urban planning, the scale of power transmission and transformation networks in power systems is also increasing, especially the high-voltage transmission and transformation networks of 110kV and above. High-voltage cables have been widely used in high-voltage power transmission and transformation networks due to their advantages such as less land occupation, convenient laying, personal safety guarantee, high power supply reliability, and less maintenance workload. Most of this type of high-voltage cables are installed by direct burial, tunnel or bridge. The traditional manual inspection and maintenance method is time-consuming and laborious, and it is impos...

AI Technical Summary

Problems solved by technology

[0003] Traditional on-site monitoring devices usually use two types of boxes. One is a single sealed plastic box. Although it has good anti-rust and anti-corrosion properties, it cannot suppress the influence of the external environmental electromagnetic field on the internal electronic devices of the device. Serious When the device does not work properly, or even damaged

Another metal box has a good ability to suppress external electromagnetic radiation, but its sealing and waterproof performance is insufficient, so it is difficult to use it in a humid environment for a long time

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