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目前地震部门所用的各种中长周期地震仪的摆,由于摆房门口没有很好的密封,使仪器摆受外界影响严重,常常出现仪器工作不稳定现象。单靠现有的普通隔热夹层门,只能满足DD-1型仪器摆工作的需要,而满足DK-1型仪器摆的需要已有困难,更难满足763型长周期仪器摆、地磁仪摆房、地倾仪摆的正常工作的需要。为此,我们设计了一种气体密封门,即将门板和门框之间的间隙用气胎打气的办法进行密封。做法是在门框和门板接合部各挖一道
At present, all kinds of medium-long period seismometers used in the earthquake department are not well-sealed because of the doorway of the pendulum so that the instrument is seriously affected by the outside world, and the unstable working of the instrument often occurs. Merely rely on the existing ordinary insulation sandwich door, DD-1-type instrument can only meet the needs of pendulum work, and to meet the needs of the DK-1-type instrument has been difficult to meet the more difficult to meet the 763-type long-period instrument pendulum, Wobble, set to tilt the normal work needs. To this end, we have designed a gas-tight door that seals the gap between the door panel and the door frame with a gas-filled tire. The practice is to dig in the door frame and the door joint each one