Corrosion resistant multifunctional high-pressure well mouth apparatus
A wellhead device and multi-functional technology, applied in the direction of wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of large consumption of packing, large power consumption, pollution of the environment, etc., and achieve replacement time The effect of shortening and preventing partial wear
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[0013] Refer to attached figure 1 , the upper end of the clamp 10 is sequentially connected with a spherical base 9, a spherical pressing cap 7, two packing chambers 6 and 18, a packing pressing cap 4, an oil groove 3 and a pressing cap 2, and a rope hanger 15, and the polished rod 1 passes through the The above components, and the nylon centralizing sleeve 14 plays a centralizing role; a spherical body 8 is formed in a spherical cavity formed inside the spherical base 9 and the spherical pressing cap 7, and the packing cavity is composed of an upper packing cavity 18 and a lower packing cavity Cavities 6 are connected by locking nuts 17. The upper packing cavity 18 is a cylindrical structure, and the lower packing cavity 6 is a conical structure. The inner cavities of the upper and lower packing cavities 18, 6 are provided with Packing 5, this structure can effectively ensure that the replacement time of the packing is shortened, and at the same time meet the requirements of ...
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