An automatic rotating device for the polished rod of the pumping unit

Abstract

The invention relates to an automatic rotating device for a polished rod of a pumping well. The automatic rotating device for the polished rod of the pumping well comprises a box body, a transmissionmechanism and a heavy hammer assembly. A fan-shaped heavy hammer of the heavy hammer assembly is located outside the box body. A tension spring bracket is fixed on the box body. The heavy hammer is connected to the tension spring bracket by the tension spring. The transmission mechanism comprises an overrunning clutch, a worm and a worm wheel. A hole is formed in the tip end of the fan-shaped heavy hammer. One end of the hole is connected with the worm through the overrunning clutch. The heavy hammer can swing around the axis direction of the worm, and the worm and the worm wheel are arrangedinside the box body. The worm is matched with the worm wheel. A thrust bearing is arranged on the lower part of the worm wheel. A disc-shaped spring is located between a spring gland and the worm wheel. A box body gland is pressed against the spring gland, and fastened with the worm wheel. The polished rod of the pumping well penetrates through the spring gland, the disc-shaped spring and the wormwheel, and is in interference fit with the worm wheel. The automatic rotating device for the polished rod of the pumping well effectively ensures that one-side wear of the polished rod is changed tocircumferential wear, and solves the problem of eccentric wear of the polished rod and a sucker rod.

Description

technical field [0001] The invention relates to an anti-eccentric wear device suitable for pumping wells with severe eccentric wear of polished rods, in particular to an automatic rotating device for polished rods in pumping wells. Background technique [0002] In the process of oilfield development and production, affected by factors such as the installation accuracy of wellhead equipment and well depth, the installation of the polished rod of the pumping unit will be deflected, that is, there will be a small angle between the polished rod of the pumping unit and the sealing device of the wellhead polished rod, resulting in The polished rod cannot be in good contact with the wellhead sealer, which will cause friction, so that the surface of the polished rod that has not been used for a long time has obvious grooves, deformation and other wear and tear, which will cause water and oil to run out of the wellhead, seriously pollute the environment, and greatly increase the diffi...

AI Technical Summary

Problems solved by technology

However, most of the existing automatic rotating devices for polished rods are complex in structure, bulky and difficult to install.

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