水下内爆过程中光电倍增管内爆防护装置响应特性分析

中微子试验使用大量光电倍增管组成的密集阵列在水下环境中对中微子进行探测和研究,由于光电倍增管外壳使用玻璃制造,壳体厚度很薄且内部近似真空状态。长期承受水压作用的玻壳可能发生整体破碎引发水下内爆现象强力的冲击波,当冲击波作用于临近的其他设备时会对这些设备造成严重的危害。光电倍增管内爆防护装置可以避免光电倍增管水下内爆冲击波的产生。文章在密封压力罐内进行了水下内爆试验,采集了内爆防护装置的结构应变和试验过程的高速影像,研究了光电倍增管内爆防护装置在内爆防护过程中的响应特性。

The neutrino test uses a dense array composed of a large number of photomultipliers to detect and study neutrinos in the underwater environment. Because the photomultiplier shell is made of glass, the thickness of the shell is very thin and the interior is similar to vacuum. The glass shell which has been subjected to water pressure for a long time may have a strong shock wave caused by underwater implosion. When the shock wave acts on other nearby equipment, it will cause serious harm to this equipment. The explosion protection device of photomultiplier tube can avoid the generation of underwater implosion shock wave of photomultiplier tube. In this paper, the underwater implosion test is carried out in the sealed pressure tank, the structural strain of the implosion protection device and the high speed image of the test process are collected, and the response characteristics of the photomultiplier tube explosion protection device in the process of implosion protection are studied.