Device for testing pressure of contact finger of high-voltage isolating switch

Abstract

The invention discloses a device for testing the pressure of a contact finger of a high-voltage isolating switch, which comprises a forcipate test contact, a hydraulic cylinder, a pressure gauge, a micro hydraulic station, an electromagnetic directional valve and a position-limit switch, wherein the rear end of the fixed end of the forcipate test contact is fixed on a cylinder body of the hydraulic cylinder, the inner side of the rear end of the movable end of the forcipate test contact is fixed at a piston rod of the hydraulic cylinder, and when the opening angle of the movable end is maximal, the outer side of the contact end or rear end of the movable end is pressed against the position-limit switch; two oil chambers of the hydraulic cylinder are connected to the micro hydraulic station respectively by a compression oil tube and a decompression oil tube through the electromagnetic directional valve; and the pressure gauge is arranged at the compression oil tube of the hydraulic cylinder. The device disclosed by the invention is simple in structure, easy to use, small in volume, light in weight, easy to carry, and high in accuracy. The device can be used for testing the grippingforce of the contact finger of the high-voltage isolating switch so as to avoid the occurrence of the phenomenon that the gripping force of the contact finger of the high-voltage isolating switch is insufficient in advance, and avoid the occurrence of a problem that a contact of the high-voltage isolating switch is heated because the contact-finger gripping force of the high-voltage isolating switch is insufficient.

Description

technical field [0001] The invention relates to a parameter testing device of a high-voltage isolating switch. Background technique [0002] At present, the heating problem of high-voltage isolating switch contacts will lead to melting of the hot parts of the contacts, increasing the number of power outages and affecting the operation structure of the power grid. After the analysis and statistics of the existing high-voltage isolating switch heating problems, it is found that the handshaking heat of the isolating switch accounts for more than 80% of all heating problems, and the insufficient grip force of the contact fingers of the isolating switch accounts for more than 60% of the handshake heating defects of the isolating switch Therefore, the key to reducing the heat generation of the high-voltage isolating switch is to ensure the grip force of the contact fingers of the isolating switch. However, there is no device capable of testing the gripping force of the fingers of...

AI Technical Summary

Problems solved by technology

However, there is currently no device capable of testing the gripping force of the fingers of the high-voltage isolating switch, and there is a lack of technical means to detect the gripping force of the fingers of the isolating switch.

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