Emergency pull-off device
An emergency and docking end technology, applied in distribution devices, special distribution devices, packaging, etc., can solve problems that easily cause serious accidents, achieve rapid and safe lift-off, and facilitate hovering and refueling operations
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[0016] The emergency pull-off device of this embodiment is as follows: figure 1 As shown, it includes a first pull-off quick-closing valve 1 installed on the helicopter refueling port and a second pull-off quick-closing valve 5 installed on the refueling outlet through threaded joints. The structure of the two pull-off quick-closing valves is as follows: figure 2 As shown, there is a tubular valve body 6 connected from the connecting end to the butt end, the connecting end has an internal thread hole, and is screwed with the external thread of the corresponding joint 13 through the internal thread, and the threaded connection is lined with a sealing member 12, as Sealed connection structure. The communication passage from the middle part of the valve body 6 to the butt end is gradually expanding, and the passage communicates with the sudden contraction port when it reaches the butt end. The middle part of the connection end of the valve body 6 extends a guide rod 11 toward ...
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