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 fast and safe lift-off, and facilitate hovering and refueling operations

Active Publication Date: 2013-06-12
AEROSUN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the helicopter needs to disengage urgently due to special circumstances during the hovering refueling process, if the refueling pipe connecting the helicopter and the ground facility cannot be disengaged quickly, it will easily cause serious accidents
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Method used

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  • Emergency pull-off device

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Embodiment Construction

[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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PUM

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Abstract

The invention relates to an emergency pull-off device, and belongs to the technical field of helicopter oiling devices. The device comprises a first pull-off quick closing valve and a second pull-off quick closing valve, wherein the pull-off quick closing valves comprise tubular valve bodies; sealing connection structures are arranged at mounting ends of the pull-off quick closing valves; guide rods extend out of the middle parts of the pull-off quick closing valves facing towards abutting ends; valve plugs are mounted on the guide rods in a sleeving manner, and are provided with closed surfaces that are elastically bonded and sealed with the abutting ends; the middle parts of the closed surfaces extend out of opposite vertex heads; the closed surfaces are in transition connection with end faces of the valve plugs, close to connecting ends by gradual-shrinkage curved surfaces in length directions of the valve plugs; flange sides radially extend out of the abutting ends; butting sealing structures are arranged at the abutting ends; and in an oiling process, the abutting ends of the first pull-off quick closing valve and the second pull-off quick closing valve are bonded mutually, and connected in a fastening manner by pull rods with limit tensions preset by the flange sides. With the adoption of the device, helicopter hovering oiling operation can be achieved conveniently under a normal operating condition; when a helicopter is separated in emergency, an oil port can be automatically cut off and reliably sealed; and the helicopter can rapidly and safely lift off.

Description

technical field [0001] The invention relates to an emergency pull-off device, in particular to an emergency pull-off device for a refueling system, and belongs to the technical field of helicopter refueling devices. Background technique [0002] With the development of science and technology, helicopters have been used more and more widely, such as forest fire prevention, power grid inspection, ocean survey and other fields. However, the helicopter has a small fuel capacity, and the traditional landing refueling requires the helicopter to take off and land frequently, which takes a lot of time and cannot extend the blanking time, so its role is greatly limited. Therefore, helicopter hovering refueling has gradually become a common refueling method for helicopters. This refueling method can greatly improve the working efficiency of the helicopter and maximize its working time. [0003] However, when the helicopter needs to escape urgently due to special circumstances during...

Claims

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Application Information

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IPC IPC(8): B67D7/06
Inventor 倪桂平夏友权冯必军李继忠
Owner AEROSUN CORP
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