Plugging device for pipe orifice in hydrostatic pressure test

Abstract

The invention discloses a plugging device for a pipe orifice in a hydrostatic pressure test. The device includes a screw rod; a fixed nut, a sealing ring, a first gasket ring, a lower plug, an expansion / shrink clamping sleeve, an upper plug, a second gasket ring and a movable nut, that are successively mounted on the screw rod from bottom to top. The fixed nut is fixedly connected to the screw rod. Through holes are formed in the centers of the sealing ring, the first gasket ring, the lower plug, the expansion / shrink clamping sleeve, the upper plug and the second gasket ring; the screw rod passes through the through holes in the sealing ring, the first gasket ring, the lower plug, the expansion / shrink clamping sleeve, the upper plug and the second gasket ring. A rotary handle is welded tothe outer side of the movable nut which is in threaded connection with the screw rod; the lower half part of the upper plug and the upper half part of the lower plug are both in a tapered structure. Atapered recess is arranged in each of the upper end port and the lower end port of the expansion / shrink clamping sleeve and is used for accommodating the tapered structures. The device has simple structure, is convenient to assemble, is low in cost, and is good in sealing effect.

Description

technical field [0001] The invention relates to the field of hydraulic test equipment, in particular to a plugging device for a nozzle of a hydraulic test. Background technique [0002] In the manufacturing process of some mechanical equipment such as pressure vessels and boiler equipment, hydraulic pressure testing is required. Before the hydraulic test, the nozzle of the equipment needs to be sealed. The current traditional method is to use the sealing plate for welding. The nozzle is subjected to secondary processing, which increases processing costs and reduces work efficiency. Contents of the invention [0003] The object of the present invention is to provide a hydraulic test nozzle plugging device. [0004] What the present invention solves is that the existing water pressure test nozzle is blocked by welding the sealing plate. This kind of plugging method has a large workload and is easy to change the organizational structure of the nozzle. If necessary, the nozz...

AI Technical Summary

Problems solved by technology

[0004] What the present invention solves is that the existing water pressure test nozzle is blocked by welding the sealing plate. This kind of plugging method has a large workload and is easy to change the organizational structure of the nozzle. If necessary, the nozzle needs to be Secondary processing, increasing processing costs and reducing work efficiency

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