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Flexible connecting device for release port of airplane fire extinguisher

A flexible connection and fire extinguisher technology, which is applied in the field of aircraft fire extinguishers, can solve problems such as installation difficulties, angle deviation, and installation process difficulties, and achieve reliable connection effects

Pending Publication Date: 2022-02-15
天津航空机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire extinguisher is generally dismantled and inspected regularly. When it is reinstalled, the angle deviation and axial displacement between the fire extinguisher nozzle head and the fire extinguishing pipeline are prone to occur, which makes the installation process difficult.
Even when the fire extinguisher is installed for the first time, the cumulative error caused by the connection of the fire extinguishing pipeline will accumulate to the initial section of the pipeline, that is, the position where the fire extinguisher spray plug is connected to the first section of the fire extinguishing pipeline, making installation difficult

Method used

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  • Flexible connecting device for release port of airplane fire extinguisher
  • Flexible connecting device for release port of airplane fire extinguisher
  • Flexible connecting device for release port of airplane fire extinguisher

Examples

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is further described:

[0028] A flexible connection device for the release port of an aircraft fire extinguisher, including a spray plug structure, a flexible joint structure, 22 half rings, a clamp 3, and a guide sleeve 4; the guide sleeve 4 is set on the spray plug structure and the flexible joint structure Two semi-rings 2 form a group of circular rings at the sealing end, which are set on the outside of the guide sleeve 4 and clamped by the clamp 3.

[0029] The spray plug structure is composed of a spray plug housing 1 and a sealing ring 5 . The sealing ring 5 is installed in the sealing groove of the injection plug housing 1, such as figure 2 .

[0030] The flexible joint structure is composed of a flared outer casing nut 9 , a flat nozzle 8 , a connecting pipe 7 , a welding joint 6 and a sealing ring 5 . Among them, the flaring outer casing nut 9HB4-45 is set on the flat nozzle 8HB4-44, th...

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Abstract

The invention belongs to the technical field of aircraft fire extinguishers, and relates to a flexible connecting device for a release port of an aircraft fire extinguisher. The device comprises a spraying bolt head structure, a flexible joint structure, two semi-rings (2), a hoop (3) and a guide sleeve (4). The structural form, the sealing groove size, the roughness requirement, the circumferential compensation amount and the axial compensation amount of each component part in the flexible connecting device are verified through tests, the requirements for the environment temperature (-55 DEG C to 70 DEG C) and vibration (the maximum magnitude grade of 10 g) of an existing airplane can be met, the connection is reliable, flexible connection can be formed when the release port of the fire extinguisher is in butt joint with a first-section hard pipe of a fire extinguishing pipeline, the axial adjustment amount is 0-10 mm, the circumferential adjustment amount is 0-5 degrees, and sealing can be kept under the air pressure of 0.5 MPa.

Description

technical field [0001] The invention belongs to the technical field of aircraft fire extinguishers, and relates to a flexible connection device used at a release port of an aircraft fire extinguisher. Background technique [0002] At present, most of the fire extinguishers installed on various types of domestic aircraft are connected to the fire extinguishing pipeline (mostly aluminum alloy or titanium alloy hard tube) through the injection plug head. In case of fire, the fire extinguishing agent is sprayed along the pipeline to the designated position to extinguish the fire. The fire extinguisher is generally dismantled and inspected regularly. When it is reinstalled, angular deviation and axial displacement are very likely to occur between the fire extinguisher nozzle head and the fire extinguishing pipeline, making the installation process difficult. Even when the fire extinguisher is installed for the first time, the cumulative error caused by the connection of the fire ...

Claims

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Application Information

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IPC IPC(8): F16L21/06F16L21/02
CPCF16L21/06F16L21/022Y02T50/40
Inventor 段志俊康中英董天艺
Owner 天津航空机电有限公司
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