Seal cap for pressurized gas containers

Details Seal cap for pressurized gas containers Seal cap for pressurized gas containers

2000-02-28

2001-11-13

Shoap, Allan N. (Department: 3727)

Receptacles

Closures

Having means for securing or retaining closure in its closed...

C220S327000, C220S378000, C220S203010, C220S203040

Reexamination Certificate

active

06315147

ABSTRACT:

Pressurized gas containers are subject to strict safety regulations. Thus, chlorine-cylinder valves must be renewed after three years at the latest. However, experience shows that damage to pressurized chlorine containers, in particular in the valve region, occur again and again. Sealing caps for chlorine cylinders of 50 and 65 kg capacity are commercially available (brochure from SBF Wasser und Umwelt; branch of Preussag Anlagenbau GmbH, 31228 Peine, 4 K-271/MD 2.0 12.93). For 500 kg chlorine containers as used in swimming pools, no corresponding devices have been known hitherto. In an emergency, these containers must be recovered by recovery casks, which, however, are only present at a few support centers and are therefore not generally accessible in good time.
The sealing device for 50 kg chlorine containers consists of a base plate having three hooks for hanging from chains, a protective cap having a cylinder valve and sealing ring, and a clamping block to be attached over the protective cap and likewise having three hooks, in which the chains are hung.
However, such a device is not very suitable for 500 kg containers: on account of the high weight, accommodating the base plate is only possible with suitable measures and thus generally involves a considerable loss of time. Furthermore, the clamping block is only provided with a single clamping screw, a factor which does not appear sufficient for considerably larger containers.


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