Blowout preventer of rod type defueling pump

Abstract

The invention discloses a blowout preventer of a rod type defueling pump. The blowout preventer comprises a coat of which two ends are provided with external taper threads and internal taper threads respectively, and is characterized in that: a positioning sleeve is fixedly connected in the coat, and the lower end of the positioning sleeve is closed and the side wall of the positioning sleeve is provided with an oil inlet port; the upper end of the positioning sleeve is provided with a bayonet pin connecting hole on which a hook-shaped bayonet pin is assembled; a cylindrical blowout prevention sliding sleeve is assembled in the positioning sleeve; the outer peripheral face of the blowout prevention sliding sleeve is provided with a symmetrical curve sliding chute; a pin head of the hook-shaped bayonet pin is inserted in the curve sliding chute; a compression spring is assembled between the blowout prevention sliding sleeve and the positioning sleeve; the upper end of the blowout prevention sliding sleeve is provided with an internal tapered unidirectional claw and a piston connecting plug; and the lower end of the piston connecting plug is provided with an external tapered unidirectional claw matched with the unidirectional claw on the upper end of the blowout prevention sliding sleeve. The blowout preventer is applicable to various defueling pumps, has a simple structure and convenient operation, and realizes safe operation and good blowout prevention effect.

Description

Technical field [0001] The present invention is a kind of underground tool for oil field oil collection operations, especially a rod -type oil pump anti -spray device, which can prevent crude oil from spraying out the ground floor and cause environmental pollution during the repairs of wells.As a result, energy conservation and green operations. Background technique [0002] When the oil field's oil pumping machine and screw pump well operate, in order to prevent crude oil from spraying the ground floor, it is now used for workproofing.The small diameter oil pump cannot be installed under the pump, so the existing anti -spray device has certain limitations. Invention content [0003] The purpose of the present invention is to provide a rod -type oil pump anti -spray device, which can apply various oil pumps. The structure is simple, the operation is convenient, the safety operation is achieved, and the anti -spray effect is good. [0004] The technical solutions provided by the ...

AI Technical Summary

Problems solved by technology

[0002] When pumping wells and screw pump wells in the oil field are operating, in order to prevent crude oil from blowing out of the wellhead ground, blowout preventers are now used for operations, but the existing problem is that there is no blowout preventer that can be installed on the screw pump. Small-diameter oil well pumps cannot install blowout preventers under the pump, so the existing blowout preventers have certain limitations

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