Automatic tightening device for pumping rod sealing device

Abstract

The invention relates to an automatic tightening device for a pumping rod sealing device. A ratchet tooth is arranged at the lower part of a track tube, tracks are arranged on the track tube, the track tube is installed in the upper part of a rotating sleeve, and the pumping rod sealing device is connected with the lower part of the track tube; a pin tube is transversely installed on the side wallof the rotating sleeve, the pin tube corresponds to the ratchet tooth, a ratchet pin and anti-return springs are installed in the pin tube, the front end of the ratchet pin is inserted into the ratchet tooth, the anti-return springs, the ratchet pin and the ratchet tooth are matched to form a ratchet mechanism to prevent the track tube from reversing, and an adjusting cap is connected with the pin tube, so that the anti-return springs generate a pre-tightening force; and a blocking sleeve is installed at the upper end of the rotating sleeve and blocks the track tube from separating from the rotating sleeve, springs are installed outside pin sleeves in a sleeving mode, the pin sleeves are installed outside the track tube in a sleeving mode, pins are inserted into the tracks to enable the track tube to rotate when the pin sleeves move axially on the track tube, and a spring seat is arranged at the upper part of the pin sleeves. When a pumping unit is in operation, sealing members can beautomatically pressurized, the management work of a wellhead of a pumping well is reduced, and the management of the pumping well is facilitated.

Description

technical field [0001] The invention relates to a wellhead device for an oil pumping well in an oil field, and is an automatic tightening device for a polished rod sealer. Background technique [0002] In the oil well with sucker rod pumping, the pumping unit drives the sucker rod to reciprocate to pump oil. The sucker rod connected between the pumping unit and the pump is called a rod string. The oil rod should be matched with the sealer so that the pumped well fluid can be discharged to the oil outlet pipeline through the tee. It is very smooth and is called a polished rod. The matching sealer is called a polished rod sealer. There is a seal in the polished rod sealer. There is a wear problem between the seal and the polished rod. Glanding, which causes the seal to compress to fill the gap so it continues to seal (known in the field as tight packing). Therefore, it is necessary to frequently rotate the gland on the polished rod sealer at the scene, and as the gland on th...

AI Technical Summary

Problems solved by technology

Therefore, the existing oil pumping wellhead management requires managers to carry tools to the wellhead to operate, which is cumbersome and heavy workload

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