High-wear-resistant blowout-control deviation adjustment polished rod sealer

Abstract

The invention provides a highly wear-resistant anti-blowout adjustable polarizing rod sealer, which belongs to the field of oil pumping equipment. There is a vent-free assembly between them; there is a deflection adjustment gap between the universal sphere and the first locking handle, and the deflection adjustment gap enables the sealer to swing 10°-20° in any direction of 360°, realizing The automatic radial adjustment and centering of the polished rod solves the problem of increased eccentric load wear, greatly reduces the load of the pumping unit, and saves about 20% of electricity consumption; the inner cavity of the middle and upper part of the universal sphere is sequentially arranged from top to bottom The wear-resistant V-cylindrical packing with openings and the wear-resistant tapered packing with openings are provided, which have good sealing performance and long service life; the top of the universal sphere is provided with a blowout prevention device to prevent downhole liquid from ejecting, avoiding Problems such as crude oil loss and environmental pollution caused by breaking off.

Description

technical field [0001] The invention relates to an oil pumping equipment in an oil field, in particular to a highly wear-resistant anti-blowout adjustable polarizing rod sealer. Background technique [0002] On March 24, 2008, the applicant applied for an invention patent named "New Multi-stage Sealing Wellhead Polished Rod Sealer" and the patent number is 200820107840.8. This patent effectively solved the technical defects of the previous polished rod sealer, but in The following technical problems still exist in the actual use process: 1) When the oil pumping rod breaks off, the upper port of the sealer cannot be automatically sealed, and the liquid is ejected from the downhole, causing crude oil loss and environmental pollution; 2) The sealing performance of the packing is not ideal , the service life is short; 3) Due to the flaws in the design structure, the ball cannot be adjusted by itself; 4) The overall sealing effect of the sealer is not ideal; 5) There is a problem...

AI Technical Summary

Problems solved by technology

[0002] On March 24, 2008, the applicant applied for an invention patent named "New Multi-stage Sealing Wellhead Polished Rod Sealer" and the patent number is 200820107840.8. This patent effectively solved the technical defects of the previous polished rod sealer, but in The following technical problems still exist in the actual use process: 1) When the oil pumping rod breaks off, the upper port of the sealer cannot be automatically sealed, and the liquid is ejected from the downhole, causing crude oil loss and environmental pollution; 2) The sealing performance of the packing is not ideal , the service life is short; 3) Due to the defects of the design structure, the ball cannot be adjusted by itself; 4) The overall sealing effect of the sealer is not ideal; 5) There is a problem of oil pumping and venting

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