Multifunctional polished rod sealing device
A sealing device and multi-functional technology, which is applied in the directions of sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve problems such as poor sealing performance, limited application range, inconvenient replacement of packing, etc., and achieves convenience Sealed and easy to replace
Inactive Publication Date: 2012-02-15
HENAN XINYU PETROLEUM MACHINERY MFG
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Problems solved by technology
[0003] In order to overcome the shortcomings of the existing polished rod sealer such as limited application range, poor sealing performance, and inconvenient replacement of packing, the invention provides a multifunctional polished rod sealing device, which not only has the main function of sealing the polished rod and the wellhead, but also has Eliminate the burr generated by the polished rod for some reason, automatic centering, deviation adjustment, convenient replacement of packing and other auxiliary functions
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[0009] exist figure 1 In the embodiment, various parts can be processed by machining, and the universal joint 9 is installed in the upper ball socket of the housing 12. If the polished rod is not concentric with the wellhead, the universal joint can be moved to make the polished rod and the wellhead The center of the universal joint is concentric, and then it is pressed tightly with the universal joint tight cap. In the inner hole of universal joint 9, install spring 8, spring seat 7, inverted cone rubber packing 6 and packing washer 5, and above that is tight cap 4, turn the tight cap clockwise, the packing is compressed, turn counterclockwise to tighten cap, the stuffing is ejected. A high-strength, high-hardness broach 3 is installed in the inner hole of the upper end of the tight cap 4. The outer circle of the broach fits loosely with the tight cap, and can move flexibly with the polished rod, and is always concentric with the polished rod, so that the burr can be easily ...
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The multifunctional polished rod sealing device is an oil extraction machine for oil fields. It is composed of a shell, a broach mechanism, a primary sealing mechanism, an aligning mechanism, a secondary sealing mechanism, and a deflection adjustment mechanism. It is characterized in that: the broach mechanism is installed on the top of the device. A high-strength, high-hardness broach is set in the top inner hole of the tight cap, and the inner hole of the broach is turned into a horn shape with a small upper opening and a large lower opening, and the broach is clamped with a washer and a retaining ring for the hole; The primary sealing mechanism is to install springs, spring washers, inverted cone rubber fillers, packing washers and compression caps in sequence in the inner hole of the universal joint; the centering mechanism is to install a For universal joints, install internal thread tight caps on the outer circle of the universal joints; the secondary sealing mechanism is to screw in a top wire on both sides of the middle part of the shell, and the packing pressure ring platform on the secondary sealing packing The inclined surface of the shoulder coincides; the deflection adjustment mechanism is arranged at the lower end of the shell, and is composed of a lower joint, a three-claw tight cap and a nonalloy. The lower joint is connected with the inner hole thread at the lower end of the shell. The oil pipe is short-circuited and threaded, and then the three-claw tightening cap tightens the two into one. The device has reliable sealing, automatic centering, offset adjustment, automatic scraping of polished rod burrs and rust, and convenient and quick replacement of packing.
Description
Technical field [0001] The invention relates to an oil production machine in an oil field, in particular to a sealing device capable of sealing a polished rod and an oil well. Background technique [0002] The known polished rod sealer is formed by the orderly installation of housing, packing, tight cap and rubber gate. It is single and cannot be used in complex wellheads where the wellhead is not perpendicular to the ground, the sucker rod and the center of the wellhead are not concentric, and the surrounding security environment is poor. At the same time, it is inconvenient to replace the packing, the efficiency is low, and the labor intensity is high. Contents of the invention [0003] In order to overcome the shortcomings of the existing polished rod sealer such as limited application range, poor sealing performance, and inconvenient replacement of packing, the invention provides a multifunctional polished rod sealing device, which not only has the main function of sea...
Claims
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IPC IPC(8): E21B33/03
Inventor 廖启新
Owner HENAN XINYU PETROLEUM MACHINERY MFG