| 摘要 |
The bursting disc assembly has a primary bursting disc 10 on a pressure 30 side of the assembly and a secondary bursting disc 20 immediately behind and supporting the primary bursting disc. Each of the said discs is made of metal, is gas impermeable and the bursting strength of the assembly is derived from both of the bursting discs acting in combination. The primary and secondary bursting discs are in contact over the whole of the operating area of the disc and are shaped together as a pair, separated, scored 15, 25 if required and then recombined. The materials of the two discs can be chosen suitably for their functions. The primary disc is for example corrosion-resistant. Enables less material (e.g. gold, silver, platinum, hastelloy, tantalum, monel, inconel) to be used for the primary disc whilst maintaining enough thickness to avoid pinholes and the secondary disc may be made from a cheaper material (e.g stainless steel). |
