CN108039031A

CN108039031A - A kind of burner for aircraft optics fire detector performance test

Info

Publication number: CN108039031A
Application number: CN201711247444.5A
Authority: CN
Inventors: 陈龙; 王哲
Original assignee: Tianjin Aviation Mechanical and Electrical Co Ltd
Current assignee: Tianjin Aviation Mechanical and Electrical Co Ltd
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2018-05-15

Abstract

The invention belongs to aircraft electric product technology, it is related to a kind of burner for aircraft optics fire detector performance test, mainly it is made of base cavity, partition plate, porous plate, micro-pipe and air inlet, function is to provide the flame combustion face of relatively uniform stabilization, is used for the performance test of optics fire detector.More in aircraft engine nacelle at present to carry out detection using optical detector, it is exactly fast response time that optics fire, which visits one outstanding feature of device,.In response performance of the test probe to real flame, generally using lighter, alcolhol burner or food tray etc., the effect of light emitting source is undesirable, and the present invention can solve the problems, such as light source emission area and spectrum homogeneity, reaches preferable test effect.

Description

A kind of burner for aircraft optics fire detector performance test

Technical field

The invention belongs to aircraft electric technology, is related to a kind of burning for aircraft optics fire detector performance test Device.

Background technology

Generally whether there is fire behavior using ultraviolet fire detector detection external engine in aircraft engine nacelle at present.It is purple Outer fire detector technology is relatively ripe, is widely used in the engine of aircraft, its technological difficulties is the anti-of product Interference performance, and the reliability under high temperature high vibration near engine.Flame detector in aircraft fire protection system removes It is required that have to flame outside very high sensitivity, it is necessary to be required to differentiate and reduce the influence of non-fire bias light.Therefore exist During product development, usually with real flame come the performance of test probe, including response time, repetition of alarms ability, disappear Alert time and antijamming capability etc..Flame size, the form of the small burning things which may cause a fire disaster such as alcolhol burner, lighter are uncontrollable, and the fire of food tray class It is difficult to accomplish stable homogeneous, combustion front fluctuation is larger although source area is larger.

The content of the invention

The purpose of the present invention is：The sufficiently large flame of the relatively uniform stabilization in the combustion reaction face of offer, area, is aircraft optics Fire detector performance test provides the test condition of more specification.

The technical scheme is that：

A kind of burner for aircraft optics fire detector performance test, including porous plate and multiple micro-pipes, it is described Hole connection oxidant gas on porous plate, the micro-pipe connect fuel, and the outlet of the micro-pipe is formed with porous plate surface fires Burning face.

A kind of burner for aircraft optics fire detector performance test, the micro-pipe are worn out of porous plate Cross, the outlet of the micro-pipe and the hole of porous plate are generally aligned in the same plane.

A kind of burner for aircraft optics fire detector performance test, further includes base cavity, partition plate, The base cavity connects fuel conduit, and contacting between partition plate barrier base cavity and air, micro-pipe passes through partition plate and base cavity Body connects.

A kind of burner for aircraft optics fire detector performance test, further include oxidant gas into Mouthful, the oxidant gas import forms cavity, oxidant between partition plate and porous plate between the partition plate and porous plate Gas enters cavity from oxidant gas import, and cavity is left from the hole of porous plate.

A kind of burner for aircraft optics fire detector performance test, the fuel is combustion gas, described Oxidant gas is air.

A kind of burner for aircraft optics fire detector performance test, the spectrum required according to test, Adjust the ratio between the aperture of porous plate and the internal diameter of micro-pipe.

It is an advantage of the invention that：First, the present invention can provide that area is sufficiently large, the burning of burning behavior stable homogeneous Face, the more general easily-testing source such as more specification such as lighter, alcolhol burner and food tray, test effect have a distinct increment.In addition, this The structure of invention is relatively simple, different types of gaseous fuel or volatile liquid fuel can be used to burn, there is provided spectrum The more extensive flame front of feature is tested for different product and used.

Brief description of the drawings

Fig. 1 burner functional block diagrams；

Fig. 2 burners respectively form block diagram；

Fig. 3 burner side views；

Fig. 4 burner top views；

Fig. 5 air and gas premixing burning schematic diagram.

Embodiment

Elaborate with reference to the accompanying drawings and examples to the present invention：

Fig. 1 is the functional block diagram of burner, as shown in the figure, oxidant gas (such as air, oxygen) and fuel gas point Do not entered by import in respective storage chamber, then reach combustion front through small holes and micro-pipe respectively and carry out combustion reaction.

As shown in Fig. 2, burner primary structure has base cavity, porous plate, micro-pipe and oxidant gas import etc..The combustion Burner is separated two kinds of gases using partition plate, combustion gas via micro-pipe, air via the aperture on porous plate, in porous plate upper surface Convergence, occurs the burning of more stable homogeneous after igniting.Base cavity end is connected by screw thread with gas pipeline (can also be used The liquid fuel of high volatility), fuel gas is discharged into porous plate upper surface by micro-pipe.Oxidant gas inlet ports are passed through flow Adjustable air or oxygen, enters the space between porous plate and partition plate under certain pressure effect, and by small on porous plate Hole escapes.Once lighting, these apertures will form many small scale flames, so as to form a relatively uniform large-scale fiery disk and steady Fixed burning.Since oxidant gas is from surrounding remittance, micro-pipe is by lower from upper input combustion gas, the gas flow of two kinds of holes inputs, pressure Power is stablized relatively, and the burning behavior of these flammules is also relatively uniform, therefore forms the combustion front of more stable homogeneous, for light Fire detector performance test is learned to use.

As shown in Figure 3 and Figure 4, burner base is fuel inlet, and upper side has four air inlets, by small size air Press or gas cylinder provide source of the gas.Multiple apertures are distributed on combustion front, aperture there are two kinds of internal diameters, and air and combustion gas are respectively from two kinds of holes Interior effusion.

As shown in figure 5, air and fuel gas converge to burning surface by independent path.To ensure burner effect And for security consideration, before burning surface (i.e. porous plate upper surface) is reached, two kinds of gases are not in contact.

In the design aspect of the fixing seal of burner, base cavity is connected using screw thread with fuel inlet pipe, partition plate and Porous plate is then welded onto cavity inner wall, it is ensured that fuel and oxidant do not premix before combustion front is reached.

In the design aspect of burner autgmentability, the internal diameter ratio of porous plate aperture and micro-pipe can be according to fuel and oxidation The species of agent gas, according to the demand of characteristic spectrum, the highest ratio of selective combustion efficiency is made, and meets different product Test uses.

Claims

1. a kind of burner for aircraft optics fire detector performance test, it is characterised in that including porous plate (5) and more A micro-pipe (4), the hole connection oxidant gas on the porous plate (5), the micro-pipe (4) connect fuel, the micro-pipe (4) Outlet forms combustion front with porous plate (5) surface.

2. a kind of burner for aircraft optics fire detector performance test according to claim 1, its feature exist In the micro-pipe (4) passes through out of porous plate (5), and the outlet and the hole of porous plate (5) of the micro-pipe (4) are generally aligned in the same plane.

3. a kind of burner for aircraft optics fire detector performance test according to claim 2, its feature exist In further including base cavity (1), partition plate (2), the base cavity (1) connects fuel conduit, partition plate (2) barrier base cavity (1) contacting between air, micro-pipe (4) are connected through partition plate (2) with base cavity (1).

4. a kind of burner for aircraft optics fire detector performance test according to claim 3, its feature exist In further including oxidant gas import (3), the oxidant gas import (3) is located between partition plate (2) and porous plate (5), institute State and cavity is formed between partition plate (2) and porous plate (5), oxidant gas enters cavity from oxidant gas import (3), from porous Leave cavity in the hole of plate (5).

5. a kind of burner for aircraft optics fire detector performance test according to claim 4, its feature exist In the fuel is combustion gas, and the oxidant gas is air.

6. a kind of burner for aircraft optics fire detector performance test according to claim 4, its feature exist In, according to the spectrum needed for test, the ratio between the aperture of adjustment porous plate (5) and the internal diameter of micro-pipe (4).