Depth of longitudinal wrinkle of head skirt 1

[etsen]

Depth of longitudinal wrinkle of head skirt shall be not greater than 1.5mm in GB 150-1998 steel pressure vessel, which is technical rules for pressure vessels in China. Is there a similar specification or regulation in AD 2000 code or PD 5500 or ASME VIII Div.1 or other standards? Thanks a lot.

 

[jehan17718]

etsen,

I am not sure by what is meant by "wrinkle". Nevertheless, I am presuming that ASME Sec 8 Div 1 Mandatory Appendix 32 titled "Local Thin Areas In Cylindrical Shells And In Spherical Segments Of Shells" would be of interest to you.

-jehan

 

[LSThill]

Team Members and jehan17718 (Mechanical)

wrinkle of head skirt:

Closure head for securing a sealing cap to a container
United States Patent 4621481

A closure head for securing a sealing cap having a disc-like top and a cylindrical skirt to a container comprises a central plunger slidable in a counter-pressure plunger between extended and retracted positions with respect thereto, a spring normally urging said central plunger to the extended position, a closure sleeve composed of a plurality of arms surrounding the counter-pressure plunger, each having at the free end thereof a clamp shoe provided with an inwardly projecting clamp rim and a radially outwardly directed inclined surface, a support sleeve for carrying said counter-pressure plunger and closure sleeve, a casing surrounding the support sleeve and supporting the latter therein, said casing being provided with a wear ring having an inclined surface in sliding contact with the inclined surfaces on the clamp shoes for closing the container upon sliding movement of the inclined surfaces of the clamp shoes along the wear ring, and the inwardly projecting clamp rim at the end of said each arm forming the clamp shoe being provided at its nearly center portion with a concave recess for forming projections spaced apart from each other at given distance around the skirt of the cap for closing the container.