Cleaning device for inner wall of stuffing box of nuclear island electric gate valve

Abstract

A cleaning device for the inner wall of a stuffing box of a nuclear island electric gate valve comprises a charging screw driver, an outer sleeve, a flexible shaft assembly and a brush head assembly. The charging screw driver provides rotating power for the brush head assembly; the flexible shaft assembly penetrates through the outer sleeve, one end of the flexible shaft assembly is connected with an output shaft of the charging screw driver, and the other end of the flexible shaft assembly is connected with the brush head assembly; the output shaft of the charging screw driver is connected with the flexible shaft assembly through a coupler; springs are fixed on the flexible shaft assembly through a flange gasket and a flat gasket, so that the flexible shaft assembly is tensioned in the outer sleeve; the coupler is a round pipe internally provided with a hexagonal groove, one end of the coupler is inserted into the output shaft of the electric screw driver, and the other end of the coupler is inserted into an outer hexagonal square head of the flexible shaft assembly; and the charging screw driver is connected with an adapter through a connecting thread sleeve, and the adapter is connected on the outer sleeve.

Description

technical field [0001] The technology belongs to the field of cleaning devices, and in particular relates to a cleaning device for the inner wall of a stuffing box of a nuclear island electric gate valve. Background technique [0002] With the operation of the unit, the stuffing boxes of some nuclear island electric gate valves are worn or aging, resulting in leakage of the stuffing, and the inner wall of the corresponding stuffing box is corroded due to contact with water. , The filler particles "stick" to the inner wall of the stuffing box. [0003] The valve is in the inverted seal position, the valve cannot be removed or isolated from the system, the actuator and yoke of the valve cannot be removed, but the packing gland bolts and disc spring components of the valve can be removed, and the packing gland and gland can be taken out from the stuffing box And fixed above the yoke, the packing components in the stuffing box can all be taken out. [0004] Since the gap betwe...

AI Technical Summary

Problems solved by technology

[0002] With the operation of the unit, the stuffing boxes of some nuclear island electric gate valves are worn or aging, resulting in leakage of the stuffing, and the inner wall of the corresponding stuffing box is corroded due to contact with water. , the filler particles "stick" to the inner wall of the stuffing box

Images