The invention discloses a manhole cover for a pressurization test cabin, and relates to the related technical field of manhole covers. The manhole cover comprises a cover body used for sealing a manhole, a filling hole is formed in the surface of the cover body, a pressurizing pipe is fixedly connected to the outer side wall of the filling hole and communicates with an outlet of external air supply equipment, a pressure relief hole is further formed in the surface of the cover body, a pressure relief pipe is fixedly connected to the inner side wall of the pressure relief hole, and a pressure relief valve is fixedly installed on the pressure relief pipe. A first control valve is fixedly installed outside the pressurizing pipe, and a linkage assembly is arranged between a valve element operation part of the first control valve and a valve element operation part of the pressure release valve. The pressure release valve is arranged on the side, close to the interior of the cabin, of the cover body, so that when people are trapped in the cabin, the trapped people can automatically open the pressure release valve in the cabin, air in the cabin is exhausted outwards, the pressure rising trend in the cabin is slowed down or stopped, time is won for rescue, or the pressure in the cabin is reduced, and self-rescue is achieved.
本发明公开了一种用于加压试验舱室的人孔盖,涉及人孔盖相关技术领域。本发明包括用于密封人孔的盖体,盖体表面开设有加注孔,加注孔外侧壁上固定连接有加压管,加压管与外部供气设备的出口之间相连通,盖体表面还开设有泄压孔,泄压孔内侧壁上固定连接有泄压管,泄压管上固定安装有泄压阀,加压管外部固定安装有第一控制阀,第一控制阀的阀芯操作部和泄压阀的阀芯操作部之间设置有联动组件。本发明通过将泄压阀设于盖体靠舱室内一侧,当出现人员受困于舱室内的情况,受困人员可在舱室内自行打开泄压阀,使舱室内的空气向外排出,使舱室内压力升高趋势减缓或停止,为救援争取时间,或使舱室内部压力降低实现自我救援。
Manhole cover for pressurization test cabin
一种用于加压试验舱室的人孔盖
2025-05-13
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
TIBKAT | 1992
|SAE | 1959
SAE | 1984
SAE | 1960
Springer Verlag | 2019
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