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Multi-profile oil-spraying fire generator

A generator and fire source technology, which is applied in the field of large-scale oil-sprayed multi-section fire source generators, can solve the problem that the fire source generator cannot satisfy the stable fire source temperature and change the fire source shape, etc., and achieve uniform and stable flame temperature and combustion efficiency. high effect

Inactive Publication Date: 2016-05-18
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increasing safety requirements of aircraft, combustion tests are becoming more and more important in the aircraft design process, but the existing burner ignition source generators cannot meet the large ignition source area and variable ignition source shape with stable ignition source temperature and heat flux density. Therefore, it is necessary to design a multi-shaped fire source generator with adjustable temperature and heat flux density and a changeable flame shape area.

Method used

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  • Multi-profile oil-spraying fire generator
  • Multi-profile oil-spraying fire generator
  • Multi-profile oil-spraying fire generator

Examples

Experimental program
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Embodiment Construction

[0016] A large-scale oil spray multi-surface fire source generator, including a primary air intake pipe 10, a secondary air intake pipe 9, a fixed shell 11, a movable jacket 12, a nozzle 8, an air intake cover 7, a front rectifying net 6, and an oil injection pipe 2. Conical cover 4, rear rectifying net 1, sealing cover 3, the gas is ignited at the nozzle 8 after passing through the primary air intake pipe 10, and the air enters the middle part of the multi-shaped surface fire source generator through the air intake cover through the secondary air intake pipe, It is mixed with the gas behind the nozzle, then passes through the front rectifying net, mixes with the mist oil droplets sprayed from the fuel injection pipe, burns again and passes through the rear rectifying net to rectify to obtain the required flame.

[0017] The shower nozzle 8 is a hemisphere, and uniform small holes are arranged on it, so as to make the flame uniform.

[0018] The air intake cover 7 is in the sh...

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Abstract

The invention belongs to the technical field of fire generators for tests, and particularly relates to a design method for a large multi-profile oil-spraying fire generator special for fire resistance, fire protection and combustion performance tests of airplane components and materials. While conventional combustion tests meeting airworthiness standard requirements are carried out, oil-spraying combustion tests of large-size components and materials can be completed; sufficient secondary combustion is achieved by adopting a two-stage gas inlet pipe and a spiral oil nozzle, flames are made uniform through two layers of turbulence screens, the flame temperature and the heat flux can be changed by adjusting the flow of the two-stage gas inlet pipe and the flow of the oil nozzle, and the flame shape can be changed by adjusting a movable outer sleeve and replacing a conical hood.

Description

technical field [0001] The invention belongs to the technical field of fire source generators for testing, and in particular relates to a large-scale oil-spray multi-section fire source generator specially used for fire resistance, fire prevention and combustion performance tests of aircraft components and materials. Background technique [0002] The aircraft fire protection system test includes the fire resistance, fire prevention and combustion performance tests of components and materials. It is an important test item to ensure the safety design requirements of aircraft and meet the relevant regulations of navigation marks and national standards. Among them, the test contents that must be completed according to the standard requirements of the aircraft fire protection system include the designated fire zone combustion test, the seat cushion oil burner test, the power unit hose assembly test, the power unit flame penetration test, the cargo compartment liner oil burner test...

Claims

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Application Information

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IPC IPC(8): F23D11/00F23D11/36F23D11/38
Inventor 钟剑龙张炜梁龙郑小宇
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA