Drop-type lightning arrester for oil field

Abstract

The invention discloses a drop-type lightning arrester for an oil field, and relates to the field of oil exploitation. The drop-type lightning arrester comprises an insulating pillar, a lightning arrester main body, a mounting plate and a conductive pressing plate, the bottom of the insulating pillar is connected with the bottom of the lightning arrester main body through the mounting plate, and the top of the insulating pillar is connected with the top of the lightning arrester main body through the conductive pressing plate. The bottom of the lightning arrester main body is rotationally connected to the mounting plate and is provided with a disconnector, a pull ring assembly is arranged on the outer side of the top of the lightning arrester main body, a push-off mechanism is arranged near the top of the insulating supporting column, and the push-off mechanism comprises a mounting shell, an electromagnetic tripping mechanism, a push-off rod and a push-off spring. The push-off rod is slidably connected into the mounting shell, one end, extending out of the mounting shell, of the push-off rod is close to or propped against the inner side surface of the upper part of the lightning arrester main body, the push-off spring always applies elastic force towards the lightning arrester main body to the push-off rod, and the electromagnetic tripping mechanism is connected in parallel or series with the disconnector.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular to a drop arrester for oil fields. Background technique [0002] The drop-out arrester is a distribution-type zinc oxide arrester that is skillfully installed on the drop-out mechanism of the drop-out fuse after refitting, so that the arrester can be easily detected and repaired with the help of the insulating pull-up lever when the power supply is not interrupted. with replacement. [0003] The existing drop arrester is equipped with a disconnector, as shown in the invention patent with the notification number CN105680404, the disconnector is a thermal explosion disconnector or a thermal melt disconnector, and the disconnector moves quickly when there is a power frequency short-circuit current , so that the components of the arrester fall down to realize the automatic disengagement of the arrester. [0004] However, there are many potential safety hazards when this kind of arreste...

AI Technical Summary

Problems solved by technology

[0004] However, there are many potential safety hazards when this kind of arrester is used in the field of oil and gas exploitation. Since the drop arrester in the oil field is usually installed outdoors, and its detachment method is to drop and detach through the gravity of the main body of the arrester itself, in the perennial outdoor environment The main body of the arrester and the conductive plate are inevitably corroded. When the disconnector is working, occasionally the top of the main body of the arrester is too tightly combined with the conductive plate and cannot be separated quickly, which will lead to more serious subsequent joint problems.

Images