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Plugging device for pipe orifice in hydrostatic pressure test

A plugging device and hydrostatic test technology, applied to measuring devices, using stable tension/pressure to test material strength, instruments, etc., can solve the problems of easily changing the nozzle structure, reducing work efficiency, and increasing processing costs. , to achieve good blocking effect, simple structure and low cost

Pending Publication Date: 2018-04-27
浙江宁松热能锅炉设备股份有限公司
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  • Claims
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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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  • Plugging device for pipe orifice in hydrostatic pressure test
  • Plugging device for pipe orifice in hydrostatic pressure test

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with drawings and embodiments.

[0019] like figure 1 As shown, the present invention includes a screw 1 and a fixing nut 10, a sealing ring 9, a first washer 8, a lower plug 7, an expansion and contraction jacket 6, an upper plug 5, a second Washer 4 and movable nut 2. The fixed nut 10, the sealing ring 9, the first washer 8, the lower plug 7, the expansion and contraction jacket 6, the upper plug 5, and the second washer 4 are stacked in sequence and tightly connected. The first gasket 8 is located between the lower plug head 7 and the sealing ring 9, so that the lower plug head 7 is not in direct contact with the sealing ring 9, and plays the role of protecting the sealing ring 9 without leaving a gap. The second washer 4 is located between the movable nut 2 and the upper plug head 5 to prevent the movable nut 2 from wearing the upper plug head 5 during rotation, reduce the contact area, affect th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/12
CPCG01N3/02G01N3/12
Inventor 吴磊庄雪君徐军陈佩峰
Owner 浙江宁松热能锅炉设备股份有限公司
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