CN2863643Y

CN2863643Y - Smog ejecting device

Info

Publication number: CN2863643Y
Application number: CN 200520047283
Authority: CN
Inventors: 牛玉春
Original assignee: ZIJIN ELECTRONICS SCIENCE AND TECHNOLOGY Co Ltd SHANGHAI
Current assignee: Shanghai Kaidike Aviation Engineering Technology Co., Ltd.
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-01-31
Anticipated expiration: 2015-12-07

Abstract

The utility model relates to the sprayer device field, in particular to a liquid smoke plume device. The technical problem to be solved is to provide a liquid smoke plume device , which can keep good spray effect in conditions of high temperature and high pressure, and can prevent chemical dyestuff from jamming a nozzle. The liquid smoke plume device includes a hollow cylindrical nozzle installed at the tail-gas air vent of an airplane; the jet at the end of the nozzle is provided with a gap-shaped jet tip; the open width (T) of the jet tip ranges from 0.5 to 5 mm. As the nozzle of the utility model is hollow-structured, the chemical dyestuff passes the nozzle smoothly without any kind of jamming formed; what is more, as the jet tip is gap-shaped, the chemical dyestuff jets out in shape of flat sector, which has a good atomizing effect. As the structure is simple, the material needed for processing is reduced and the manufacturing technique becomes relatively simple.

Description

A kind of smog ejecting device

Technical field:

The utility model relates to the atomising installation field, the liquid smog ejecting device that is used for showing aircraft flight path that uses when relating in particular to a kind of aircraft flying training and stunt.

Background technology:

The device that is used for showing aircraft flight path that the liquid smog ejecting device uses when being aircraft flying training and stunt, its groundwork is to utilize certain pressure, chemical dye (liquid) is sprayed with smoke-like from spout by the smog ejecting device jet pipe, smoke-like chemical dye after the ejection mixes with the high-temperature high-pressure air flow that aero-engine produces, and produces the smog that can show flight path then.

Liquid smog ejecting device jet pipe is the vitals that guarantees to draw cigarette system normal operation and produce good result.Its main technical requirements is to keep stable performance under condition such as High Temperature High Pressure, medium be impure, produces good atomizing effect.

The smog ejecting device that generally uses is provided with swirler or helical structure usually in jet pipe now, and its principle is when making liquid pass through helical structure, to be subjected to action of centrifugal force, rotates in jet pipe, and then sprays from spout with smoke-like.

Chinese patent specification sheets CN2277821Y discloses a kind of rifling spiral sprays head, the inner chamber of this fog-spray nozzle is shaped on many as the serration groove of (or claiming rifling) of the rifling in the bore, after the liquid with certain pressure enters the spout chamber, because of the spirochetal end of rifling is a cone, make separating liquid and travel forward along many serration grooves, the liquid of rotation sprays through the spout rotation along interior poppet surface, under action of centrifugal force, liquid forms conical atomizing face, obtains good atomizing effect.The structure of this type of helical structure fog-spray nozzle is complicated, use that impurity is more, particle is bigger draw cigarette with chemical dye the time easily stop up.Because in drawing the cigarette process, jet pipe is surrounded by high-temperature tail gas, in a single day chemical dye stops up in jet pipe, will be at high temperature dry and hard rapidly, finally make the total system paralysis.

At present, the partially liq smog ejecting device is arranged also on the market, its nozzle adopts straight circular hole formula, compare with the helical structure jet pipe, because pipeline is through type substantially, and though trafficability performance is very stable, the difficult obstruction, its atomizing effect is relatively poor.,, can only cause the rising of cost awing, also increase the loaded weight of aircraft simultaneously by increasing fluid flow for obtaining desirable atomizing effect.

Summary of the invention:

The technical problems to be solved in the utility model provides and a kind ofly can keep good spray effect under high-temperature and high-pressure conditions, can prevent also simultaneously that chemical dye from stopping up the liquid smog ejecting device of jet pipe, it can prevent that chemical dye from stopping up jet pipe in simple mode, this liquid smog ejecting device jet pipe is because simple in structure simultaneously, it is less to expend work material, and manufacturing process is also easy relatively.

For solving the problems of the technologies described above, the utility model proposes that following technical scheme realizes:

A kind of smog ejecting device, it comprises the hollow cylindrical jet pipe that is located at aircraft tail gas exhausr port, and the jet end of described jet pipe is provided with a slot-shaped spout, and the A/F of described spout (T) scope is 0.5～5 millimeter.

Described slot-shaped spout is a linear, and its opening direction becomes the α angle with the jet pipe axioversion, and the scope at described α angle is 0 °～90 °.

Described slot-shaped spout place establishes a hole.

Described jet pipe installation direction becomes a β angle with horizontal surface, the scope at described β angle is 0 °～90 °, and described spout is arranged on jet pipe and deviates from the position that aircraft tail gas comes gas side.

The utility model brings following beneficial effect:

Because jet pipe is a hollow structure, spout is arranged on the end of jet pipe, simple in structure, cheap, chemical dye can not form any type of obstruction smooth and easy by motion path in the process of jet pipe, and, because spout is slot-shaped, it is flat fan-shaped that chemical dye is when ejection, has good atomizing effect.

Description of drawings:

Fig. 1: the spout portion separation structure scheme drawing of embodiment of the present utility model

Fig. 2: the jet pipe part A of embodiment of the present utility model is to scheme drawing

Fig. 3: scheme drawing after the installation of embodiment of the present utility model

The specific embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is further described:

In conjunction with referring to Fig. 1, Fig. 2, the most preferred embodiment of utility model, jet pipe of the present utility model are hollow columnar structures, and spout 1 is opened in the end of jet pipe, and spout 1 is a clearance type.By jet pipe, from the flat fan-shaped smoke-like liquid level of spout 1 ejection, this smoke-like liquid level cuts to contacting with aircraft tail gas chemical dye under certain pressure.Because flat fan-shaped liquid level is bigger with the area of contact of aircraft tail gas, therefore mix very fully, only need less flow can obtain the very thick column of smoke, what obtain satisfaction draws the cigarette effect.Other benefits that low discharge brings can reduce the liquid tankage of smog ejecting device in addition, alleviate the weight of smog ejecting device, thereby alleviate the loaded weight of aircraft, make aircraft that better manoevreability and maneuvering performance be arranged.

The opening length of spout 1 can cooperate the smoke amount to decide according to its different use occasion, for reaching the effect of flat fan-shaped smoke-like liquid level, the scope of the A/F T of control spout 1 is 0.5～5 millimeter, the opening direction of spout 1 and jet pipe axial becomes a α angle, this concrete scope in α angle is from 0 °～90 °, to adapt to all kinds of different usage conditions, make smog ejecting device be convenient to install and use.

Owing to draw the cigarette effect not only relevant with the nozzle exit area, also relate to the characteristic of caliber, pressure, temperature and liquid itself, so also designed an aperture 2 at spout 1 place, situation during hole size uses according to reality is joined and is beaten, be used to adjust the exit area of jet pipe, can adapt to the needs that different aircrafts, different structure, difference draw breathing liquid.

Referring to Fig. 3,3 is the tail gas exhausr port of aircraft among the figure, when installing, jet pipe becomes a β angle with horizontal surface, the scope at described β angle is 0 °～90 °, spout 1 is arranged on jet pipe and deviates from the position that aircraft tail gas comes gas side, the tail gas air-flow can deviate to come the position of gas side to form a local depression district at jet pipe, this meiobar can produce suction to the clearance type spout 1 that is arranged on this side, thereby when aircraft stops to draw cigarette, liquid residual in the jet pipe is siphoned away, prevent that further residual liquid sintering under high temperature action from stopping up jet pipe.

Claims

1, a kind of smog ejecting device, it comprises the hollow cylindrical jet pipe that is located at aircraft tail gas exhausr port, it is characterized in that: the jet end of described jet pipe is provided with a slot-shaped spout, and the A/F of described spout (T) scope is 0.5～5 millimeter.

2, according to the described a kind of smog ejecting device of claim 1, it is characterized in that: described slot-shaped spout is a linear, and its opening direction becomes the α angle with the jet pipe axioversion, and the scope at described α angle is 0 °～90 °.

3, according to claim 1 or 2 described a kind of smog ejecting devices, it is characterized in that: described slot-shaped spout place establishes a hole.

4, according to claim 1 or 2 described a kind of smog ejecting devices, it is characterized in that: described jet pipe installation direction becomes a β angle with horizontal surface, and the scope at described β angle is 0 °～90 °, and described spout is arranged on jet pipe and deviates from the position that aircraft tail gas comes gas side.

5, according to the described a kind of smog ejecting device of claim 3, it is characterized in that: described jet pipe installation direction becomes a β angle with horizontal surface, and the scope at described β angle is 0 °～90 °, and described spout is arranged on jet pipe and deviates from the position that aircraft tail gas comes gas side.