Portable blowout prevention and pollution prevention full-functional pumping wellhead device

Abstract

The invention discloses a portable blowout prevention and pollution prevention full-functional pumping wellhead device. A sleeving pipe A and a sleeving pipe B are fixed sequentially and upward on the top of a bottom pipe; the lower portion of the sleeving pipe A is fixedly connected with the top of the bottom pipe through a thread sleeve A, and the lower portion of the sleeving pipe B is fixedly connected with the top of the sleeving pipe A through a thread sleeve B; a sliding groove of a truncated-cone-shaped structure with the diameter of the upper portion being large and the diameter of the lower portion being small is formed in the upper portion of an inner pipe body of the sleeving pipe A; a sealing sleeve with the outer side wall matched with the sliding groove is arranged in the sliding groove and fixed in the sliding groove through the bottom of the sleeving pipe B; the top end of a smooth sucker rod stretches out of the wellhead, upward penetrates through the bottom pipe, the sleeving pipe A, the sealing sleeve and the sleeving pipe B in sequence and stretches out of the top of the sleeving pipe B; and the inner diameter of the sealing sleeve is in interference fit with the diameter of the smooth sucker rod. According to the structure, it can be known that according to the portable blowout prevention and pollution prevention full-functional pumping wellhead device, by tightly screwing the thread sleeve B, the sleeving pipe B is made to press down the sealing sleeve to enable the inner diameter of the sealing sleeve to be tightened, the sealing effect of the sealing sleeve can be still guaranteed, and the service life of the sealing sleeve is prolonged.

Description

technical field [0001] The invention relates to the technical field of oil pumping wellhead devices, in particular to a portable full-function oil pumping wellhead device for blowout prevention and pollution prevention. Background technique [0002] At present, single-function oil pumping polished rod spray-proof rubber valves are basically used in the market, and this valve has a single function. At present, the packing box straight-through space seal used in the market has a short life span, and the normal life span is about three months. It is not only inconvenient to replace, but also has no automatic blowout prevention function; the pumping wellhead device on the market is very common, and its safety performance is relatively poor. , once the seal wears or the oil pumping rod breaks off, it is very easy to cause accidents such as leakage, which will not only cause greater economic waste, but more importantly, cause environmental pollution, and it is difficult to repair ...

AI Technical Summary

Problems solved by technology

[0002] At present, the single-function polished rod spray-proof rubber valve is basically used in the market. This valve has a single function.

At present, the packing box straight-through space seal used in the market has a short life span, and the normal life span is about three months. It is not only inconvenient to replace, but also has no automatic blowout prevention function; the pumping wellhead device on the market is very common, and its safety performance is relatively poor. , once the seals are worn or the oil pumping rod breaks off, it is easy to cause accidents such as leakage, which will not only cause greater economic waste, but more importantly, cause environmental pollution, and it is difficult to repair the environment, which does not meet the requirements of national laws and regulations.

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