Sealing clamp for testing valve
A technology of valves and fixtures, which is applied in fluid tightness testing, machine/structural parts testing, measuring devices, etc. It can solve problems such as damage to the inlet and outlet end faces, unreasonable design costs and waste of ultra-low temperature valves, and avoid valve damage. Effect
Inactive Publication Date: 2013-05-22
UNIV OF SHANGHAI FOR SCI & TECH +1
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Problems solved by technology
[0002] In the field of valve testing, some high-pressure valves are connected to pipelines by welding. For the test after the valve is manufactured, it must be welded with the pipeline. Such a test method causes the inlet and outlet of the tested valve to Damage to the end face, which can usually only be discarded or reprocessed, resulting in waste
The expensive materials and design costs of cryogenic valves are even more unreasonable in such a test session
Method used
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[0007] The present invention will be described in further detail below in conjunction with accompanying drawing and embodiment, but present embodiment is not intended to limit the present invention, and every adopt similar structure of the present invention and similar change thereof, all should be included in the protection scope of the present invention.
[0008] Such as figure 1 As shown, the sealing fixture for valve testing of the present invention includes a rear splint 2 with a test pipe, a gasket 3, a positioning bolt 5, a front splint 6, a clamping plate 7 with a test pipe, and a compression bolt 8.
[0009] First, the rear splint 2 with the test pipe and the front splint 6 clamp the two inlet and outlet ports 4 of the valve 1 under test, and fasten and fix them with positioning bolts 5 and nut washers. At this time, the two inlet and outlet ports 4 of the tested valve 1 are respectively embedded in the front splint 6 and the rear splint 2, and the two are in a transi...
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The invention relates to a sealing clamp for testing a valve, which comprises a rear splint with a test pipeline, a front splint, and a clamping plate with a test pipeline, wherein two in and out ports of a valve to be tested are respectively embedded in the front splint and the rear splint and are fastened and connected by using location bolts and nut gaskets; the clamping plate with the test pipeline is fixed on the front splint by using a compression bolt and fastened by using a nut, a gasket and a spring wafer; and the valve is in transition matching connection with the front splint and the rear splint. The sealing clamp for fastening is suitable for sealing property test requirements of a welding valve due to no damage to the structure of the valve; and detachable structure characteristics avoid damaging the valve, caused by welding, so that the valve to be tested can also be used. The sealing clamp can be used for testing valves at normal temperature and ultralow temperature (-196 DEG C).
Description
technical field [0001] The invention relates to a sealing jig for valve testing, in particular to a sealing jig suitable for normal and ultra-low temperature valve testing. Background technique [0002] In the field of valve testing, some high-pressure valves are connected to pipelines by welding. For the test after the valve is manufactured, it must be welded with the pipeline. Such a test method causes the inlet and outlet of the tested valve to If the end face is damaged, it can usually only be discarded or reprocessed, resulting in waste. The expensive materials and design costs of cryogenic valves are even more unreasonable in such a test session. Contents of the invention [0003] The present invention provides a sealing fixture for valve testing. The fixture adopts a detachable valve fastening and sealing method, which is applicable to valve testing at room temperature and ultra-low temperature, and will not cause damage to the inlet and outlet faces of the valve. ...
Claims
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IPC IPC(8): G01M3/00
Inventor 柳建华王瑾唐勇吴堂荣张良朱立伟孙萌贺航
Owner UNIV OF SHANGHAI FOR SCI & TECH