发明名称 |
Overpressure protector for insulating gas filled chamber of electrical equipment - has release burst disc consisting of thin metal foil preventing leakage loss and layer of brittle material e.g. graphite |
摘要 |
The safety valve for a gas-filled electrical device has a round hole in the wall of the device covered with a disc of graphite (4), this being the bursting element in the event of over-pressure. The graphite disc is held by a retaining ring (10) with several bolts (12) screwed around its circumference. There is a rubber ring (13) between disc and retaining ring and also a sealing ring (7) on the underside of the disc. A foil of rolled aluminium or stainless steel (6) prevents seeping of the gas through the porous graphite, and a thin metal plate (16) on the retaining ring protects the graphite disc from external damage. ADVANTAGE - Simple to manufacture. No leakages yet immediate rupture when safety pressure reached.
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申请公布号 |
DE4125591(A1) |
申请公布日期 |
1993.02.04 |
申请号 |
DE19914125591 |
申请日期 |
1991.08.02 |
申请人 |
LICENTIA PATENT-VERWALTUNGS-GMBH, 6000 FRANKFURT, DE |
发明人 |
HOFFMANN, DIETRICH, DIPL.-ING., 3500 KASSEL, DE |
分类号 |
H02B13/065 |
主分类号 |
H02B13/065 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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