The invention provides a hydraulic sealing device, which comprises a front hole sealing device, one or more middle hole sealing devices and a rear hole sealing device. The sealing device and the rear end of the middle sealing device is connected in series, after the hole packer front and middle hole packer is connected in series; the former hole packer, middle hole packer and sealing device has the same structure, which includes expansion capsule, center pipe. The invention can realize high pressure sealing of rock holes, and has the advantages of no axial force, high sealing hole pressure, large friction force, strong safety and simple structure, and can be widely used in coal mine and other mining industries.
【技术实现步骤摘要】
【技术保护点】
１．一种水力封孔器，其特征在于，所述水力封孔器包括前封孔器、一根或一根以上的中间封孔器、后封孔器，前封孔器后端与中间封孔器前端串接，后封孔器前端与中间封孔器后端串接；其中，前封孔器、中间封孔器和后封孔器具有相同的结构，均包括：膨胀胶囊、中心管，膨胀胶囊套装于中心管外侧；膨胀胶囊前端和后端的内侧均套装有中间接头，中间接头内侧套装于中心管外侧，膨胀胶囊中部与中心管之间形成空隙；与膨胀胶囊中部对应的中心管管壁上设置有一个或一个以上的径向孔；膨胀胶囊前端和后端的外侧均套装有套管，套管的前端面固定在中心管上；膨胀胶囊后端固定于中心管进水端外侧，膨胀胶囊前端夹在膨胀胶囊前端的中间接头与...
【技术特征摘要】
【专利技术属性】
技术研发人员：朱建安，郭培红，刘明举，刘彦伟，李海霞，郭瑜，
申请(专利权)人：河南理工大学，
类型：发明
国别省市：41
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