An electromagnetic arrester for oil field

Abstract

The invention discloses an electromagnetic lightning arrester for oil fields, which comprises an insulating support, a main body of the lightning arrester, a mounting plate and a conductive voltage plate. Pressure plate connection, the cell in the main body of the arrester is slidably connected to the main body of the arrester, the cell is slidably connected to the mounting plate, the main body of the arrester is provided with an electromagnetic fixing component, the top of the cell is provided with a push-off mechanism, and the push-off mechanism includes a mounting shell push From the spring, the mounting shell is fixed to the conductive voltage plate, the push-off spring is set in the mounting shell, and the push-off spring is squeezed to the top of the cell; the electromagnetic fixing component includes an electromagnetic tripping mechanism and a fixed pin rod, and the fixed pin rod is radially slidably connected In the main body of the arrester, the battery core is provided with a positioning hole matching the fixed pin rod, and the electromagnetic tripping mechanism is connected to the power frequency circuit, and the electromagnetic tripping mechanism can attract the fixed pin rod to leave the positioning hole.

Description

technical field [0001] The invention relates to the field of oilfield equipment, and more specifically, to an electromagnetic arrester for oilfields. Background technique [0002] The drop arrester is a distribution type zinc oxide arrester skillfully installed on the high stability mechanism of the high stability fuse after refitting, so that the arrester can be conveniently detected by means of the insulating switch lever when the power supply is not interrupted. , Repair and 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] There is also a thermal demagnetization arrester. The ele...

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Problems solved by technology

[0005] However, there are many potential safety hazards in the use of these two arresters in oil and gas exploitation. Since the arrester is usually installed in the field inaccessible, and its detachment method is through the gravity of the main body of the arrester, the arrester in the perennial outdoor environment The battery cell and the conductive plate of the main body are inevitably corroded. When the disconnector is working, occasionally the top of the battery cell cannot be separated quickly because it is too tightly combined with the conductive plate, which will cause more serious subsequent joint problems. If there is a problem during use, it will lead to greater production accidents and safety hazards

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