Device for replacing oil well mouth back pressure valve for oil exploitation

Abstract

The invention relates to the field of back pressure valve replacement, and particularly relates to a device for replacing an oil well mouth back pressure valve for oil exploitation. The device comprises slotting sliding rail bases, a special-shaped slotting sliding supporting frame, a slotting tapping frame, a slotting sliding frame, a reciprocating driving mechanism and the like; the two slotting sliding rail bases are oppositely arranged, the special-shaped slotting sliding supporting frame is fixedly mounted on the slotting sliding rail bases, the slotting tapping frame is welded to one slotting sliding rail base, the slotting sliding frame is fixedly connected to the slotting tapping frame, and the reciprocating driving mechanism is arranged on the special-shaped slotting sliding supporting frame. Through the guiding effect of a limiting groove frame, the special-shaped tapping frame and devices on the special-shaped tapping frame move relatively, meanwhile, a magnetic screw sleeve drives bolts to move in the opposite directions, the magnetic screw sleeve pulls the bolts out of nuts and the valve, and the bolts are dismounted.

Description

technical field [0001] The invention relates to the field of replacement of back pressure valves, in particular to a device for replacing oil well head back pressure valves in oil exploitation. Background technique [0002] The valve is a pipeline accessory used to open and close the pipeline, control the flow direction, adjust and control the parameters of the conveying medium. The valve is a control component in the fluid conveying system. Functions such as overflow and pressure relief, according to their functions, can be divided into shut-off valves, check valves, regulating valves, etc. During the long-term use of the back pressure valve at the wellhead of the oil well, the switch will be inflexible, leaking, damaged, The brake handle falls off, etc., and the valve needs to be replaced. [0003] In the existing oil well wellhead valve replacement method, the nuts close to the valve are usually screwed out counterclockwise from the bolts by hand with pipe wrench, the bo...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of equipment that can unscrew all the nuts from the bolts at the same time, can take out the bolts from the nuts and valves, and can replace the wellhead valves, which is used for oil production to replace the wellhead back pressure valves of oil wells. In order to solve the problems in the above-mentioned background technology that all the nuts cannot be unscrewed from the bolts at the same time, and the replacement of the valve is troublesome

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