High-voltage cable terminal silicone oil sampling device, sampling equipment and sampling method

Abstract

The invention discloses a high-voltage cable terminal silicone oil sampling device, sampling equipment and a sampling method. The high-voltage cable terminal silicone oil sampling device comprises anouter sheath, a sampling box, a movable baffle, a first driving mechanism, a second driving mechanism and a control module, wherein the outer sheath is of a barrel-shaped structure with one end sealedand the other end opened, the upper end and the lower end are an upper connecting section and a lower connecting section respectively, the upper connecting section and the lower connecting section are male and female connecting assemblies, and the sampling box and the control module are both located in the outer sheath; a sampling opening is formed in the wall of the outer sheath, and the first driving mechanism drives the sampling box to do linear reciprocating motion, so that a sampling nozzle of the sampling box extends out or retracts from the sampling opening; and the second driving mechanism drives the movable baffle to block and release the sampling port. According to the high-voltage cable terminal silicone oil sampling device designed by the invention, the sampling device realizes end-to-end connection of a plurality of sampling devices through the upper and lower connecting sections of the outer sheath, so that one-time sampling is realized, and a plurality of samples with different heights can be obtained.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and reduction for power transmission and transformation equipment, in particular to a silicon oil sampling device for a high-voltage cable terminal, a sampling device and a sampling method. Background technique [0002] Silicone oil is the main insulating medium for high-voltage cable terminals, and its performance plays a decisive role in the overall safe operation of the cable. During the operation of the line, affected by external factors such as oxygen, humidity, high temperature, ultraviolet rays, strong electric field, impurities, etc., the mechanical and electrical properties of the silicone oil will gradually age, resulting in delamination, which will greatly reduce the insulation performance of the terminal. Terminal heating defects, in severe cases, can cause breakdown faults at high-voltage cable terminals. Studying the mechanism of silicone oil deterioration and delaminati...

AI Technical Summary

Problems solved by technology

However, silicone oil has a viscous texture and poor fluidity, making it difficult to sample at room temperature

At present, the sampling needs to be heated as a whole, the sampling time is long, and there will be flow mixing between layers, which will affect the sampling effect

[0003] At present, there is no layered sampling device for silicone oil suitable for cable terminals. It is imminent to design a layered sampling device that matches the actual situation of the sample.

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