向水

For protecting the signal transmitting fiber in downhole high temperature and pressure environment, an epoxy-free package method based on hermetical bonding of quartz ferrule and fiber is used and Polyimide coated fiber and stainless steel protecting tubing are adopted.

我们采用金属—石英管的机械压力密封和石英管—光纤的激光热熔无胶密封结构，保证了传感器导压腔和耐高温光纤不锈钢保护套管的可靠密封，提高了整个系统的可靠性和使用寿命；采用不锈钢套管保护聚酰亚胺材料涂敷的耐高温光纤传输传感信号，解决了耐高温和保护光纤的问题。

And with 2.8 MPa working pressure, 2500 W heating power, 7 meters resonance tube length, the thermoacoustically driven pulse tube cooler has reached 80.9 K refrigeration temperature at 45 Hz.

系统在谐振直路总长度为7米，工作压力为2.7MPa，加热功率为2350W，工作频率为45Hz时得到80.9K的最低制冷温度。