| 摘要 |
A high air-tightness device is provided with a bottom plate (1), a frame body wall (2) and a shell body cover (3). The materials of said parts are one and more of metal, glass and ceramic, and the junctions among the parts are sealed by extruding a hollow-core metal sealing ring (12) by thread. The device is provided with one and more of a window glass (17), a pipeline (10), a pipeline interface, an openable and closable valve (11), an electrode communicating inside with outside and a threaded opening, and the device is connected and sealed by extruding the hollow-core metal sealing ring using the internal or external threaded part to move straight or rotate; or the device is pre-sealing formed by one and more of a metal solder welding processing technique, a metal welding processing technique, a glass welding processing technique and a sintering ceramic formed processing technique. The materials of each part for isolating inside from outside during the sealing are one and more of metal, glass and ceramic. Vacuum, special gas and liquid can be sealed within the high air-tightness device for a long time. The high air-tightness device is easy to be disconnected and sealed again, and has easy maintenance and low cost. |
