Top-mounted type ball valve on-line maintenance assembling and disassembling device

Abstract

The invention discloses a top-mounted type ball valve on-line maintenance assembling and disassembling device. The top-mounted type ball valve on-line maintenance assembling and disassembling device comprises two maintenance assembling and disassembling device bodies with the same structures, wherein the two maintenance assembling and disassembling device bodies are symmetric to each other in the left-right direction; each maintenance assembling and disassembling device body comprises a limiting plate, a stud, an adjustable pad, a hexagon nut, an inclined adjustable rod, an adjusting nut, a movable footstock and a fixed footstock; each limiting plate is fixed on a flange in an assembled valve body via the corresponding stud; each adjustable pad is arranged above the corresponding limiting plate; each hexagon nut is arranged above the corresponding adjustable pad; one end of each inclined adjustable rod penetrates in the corresponding limiting plate and can move in the corresponding limiting plate in the up-down direction; the lower end of each inclined adjustable rod is a trapezoidal end; a left side surface of each trapezoidal end is an inclined surface which extends towards the direction of a vertical central axis of the corresponding inclined adjustable rod; a right side surface of each trapezoidal end is a horizontal surface; guiding mechanisms which are distributed longitudinally are respectively arranged on the left side surface and the right side surface of each trapezoidal end; each adjusting nut is used for fixing the corresponding inclined adjustable rod and adjusting the corresponding inclined adjustable rod in the up-down direction; each movable footstock is movably arranged on the left side surface of the corresponding trapezoidal end; and each fixed footstock is movably arranged on the right side surface of the corresponding trapezoidal end. The top-mounted ball valve on-line maintenance assembling and disassembling device is simple in structure; and by the top-mounted ball valve on-line maintenance assembling and disassembling device, a top-mounted type ball valve is quite convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to a maintenance and disassembly device for a ball valve, in particular to an on-line maintenance and disassembly device for a top-mounted ball valve. Background technique [0002] Top-entry ball valves are widely used in oil and natural gas pipelines, and in oil extraction, oil refining, petrochemical, chemical, chemical fiber, metallurgy, electric power, nuclear power, food, and paper-making devices; top-entry ball valves are easy and quick to disassemble on the pipeline, and easy to maintain; When the valve fails on the pipeline and needs to be repaired, it is not necessary to disassemble the valve from the pipeline, only the bolts and nuts of the middle flange are removed, the valve cover and stem assembly are removed from the valve body, and then the ball and valve are taken out. Seat assembly; the ball and seat can be repaired online; this repair saves time and minimizes losses in production. [0003] In the prior art, ther...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are few devices for online maintenance and disassembly of top-entry ball valves, but in some specific occasions, online maintenance and disassembly of top-entry ball valves is required

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