CN113028452A - Dual-turbulence combined oil slinger - Google Patents

Abstract

Translated fromChinese

本发明提供了一种双重扰流组合式甩油盘，由盘体、分流器、异型扰流叶片、气泡分布扰流柱及对冲孔组成。分流器为一个侧向开口的罩帽结构，安装在进油口上。异型扰流叶片均匀地按圆周分布在分流器出口处，叶片之间的通道限制了工质流向。气泡型扰流柱大小不一，分布在扰流叶片后端。对冲孔交替分布在甩油盘中心壁面上。燃油从进油口进入分流器，再在扰流叶片处分叉、变向，在扰流柱区域多次碰撞发生液膜破碎，最终在对冲喷口处达到更好的雾化效果。而且燃油对高速旋转的轴有冷却作用，也可以预热燃油，故而使用甩油盘的发动机燃烧效率较高。

The invention provides a double spoiler combined oil throwing pan, which is composed of a pan body, a flow divider, a special-shaped spoiler blade, a bubble distribution spoiler column and a counter punching hole. The diverter is a side opening cap structure mounted on the oil inlet. The special-shaped spoiler blades are evenly distributed at the outlet of the flow divider according to the circumference, and the channel between the blades restricts the flow direction of the working medium. The bubble-type spoiler columns vary in size and are distributed at the rear end of the spoiler vanes. The punching holes are alternately distributed on the central wall of the oil throwing pan. The fuel enters the diverter from the fuel inlet, and then bifurcates and changes direction at the spoiler vane. The liquid film is broken after multiple collisions in the spoiler column area, and finally achieves a better atomization effect at the hedging nozzle. Moreover, the fuel has a cooling effect on the high-speed rotating shaft, and can also preheat the fuel, so the combustion efficiency of the engine using the oil slinger is higher.

Description

Dual-turbulence combined oil slinger

Technical Field

The invention relates to the technical field of combustion chambers of gas turbines, in particular to a dual-turbulence combined oil slinger.

Background

The turbine engine oil thrower disc is a structure which applies work to fuel oil through the rotation of the oil thrower disc, enables the fuel oil to be sprayed out at a high speed through spray holes of the oil thrower disc and realizes fuel oil atomization. The rotating speed of the oil thrower disc is consistent with the rotating speed of the turbine shaft and continuously changes along with the flying state.

The oil thrower is a special fuel nozzle, mainly used for oil supply device of baffling annular combustion chamber with high rotation speed and small flow. The fuel oil is supplied through the center of a hollow compressor-turbine shaft, a plurality of small holes are formed in the periphery of the oil thrower, when a central shaft of an engine rotates at a high speed, the fuel oil is thrown to the head of the annular combustion chamber from the small holes in the edge of the oil thrower, and due to the high-speed rotation of the shaft, the fuel oil is acted by centrifugal force, interacts with air and is crushed and atomized. The engine using the oil thrower oil nozzle has high combustion efficiency.

However, the existing oil thrower nozzle has the defects that the fuel oil atomization cone angle is not large at low rotating speed, the oil throwing amount of each nozzle is not uniform enough, and the atomization effect needs to be improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing a double-turbulence combined oil thrower. Compared with the prior art structure, the invention has the advantages that the invention is provided with the flow divider, the special-shaped flow disturbing blade, the bubble type flow disturbing column and the opposite jet. The aims of improving the atomization level of fuel oil and improving the distribution of the outlet temperature field are fulfilled by improving the atomization effect of the fuel oil in the oil throwing disc cavity and changing the shape of the fuel oil thrown out of the main oil disc.

Technical scheme

The invention aims to provide a double-turbulence combined oil thrower.

The technical scheme of the invention is as follows:

the utility model provides a dual vortex combination formula oil slinger which characterized in that: the oil thrower comprises a disc main body, a flow divider, special-shaped turbulence blades, a bubble type turbulence column and a hedging nozzle.

The disc main body is characterized in that: the diameter of the supporting disc is 200mm, and the diameter of the oil delivery pipe is 28 mm.

The shunt is characterized in that: the inner part of the shunt is hollow, the diameter of the shunt is 220 mm, and 24 shunt holes with the aperture of 1.5mm are designed on the side surface of the shunt.

The abnormal shape vortex blade, its characterized in that: an oil throwing channel with a rotary direction is formed between the special-shaped turbulence blades, so that the working medium uniformly flows to all directions.

The bubble type turbulence column is characterized in that: the oil slinger is formed by combining three groups of turbulence columns with different cross sections and is fully distributed at an outlet of an oil slinging channel.

The opposite-flushing nozzle is characterized in that: the diameter of each nozzle is 2mm, the nozzles are distributed on the peripheral wall surface of the oil thrower disc according to the circle center at a pitch angle of 30 degrees, and fuel oil sprayed by every two adjacent nozzles collides and is crushed again.

The invention has the following beneficial effects:

in order to improve the effective mixing of fuel at the head of the flame tube and improve the combustion efficiency of the baffling combustion chamber, the invention provides a double-turbulence combined oil thrower. Compared with the existing centrifugal oil slinger, the centrifugal oil slinger has the outstanding advantages that: the matching of the turbulence blades and the turbulence column dual turbulence devices is utilized, the flowing state of the liquid working medium rotating at high speed is changed, and the fuel oil crushing and atomizing effect is better; the nozzle uses the opposite-flushing nozzle, and the outlet temperature field distribution is better compared with that of a common nozzle.

Drawings

FIG. 1: integral schematic diagram of dual-turbulence combined oil slinger

FIG. 2: dual-turbulence combined oil slinger cross-sectional view

In the figure: 1. the disc comprises a disc main body, 2, an oil inlet, 3, a flow divider, 4, a flow dividing channel, 5, special-shaped turbulence blades, 6, a bubble type turbulence column, 7 and a hedging nozzle.

Detailed Description

The invention will now be further described with reference to the accompanying drawings in which:

referring to fig. 1 and 2, the invention relates to a dual-disturbed flow combined oil slinger.

Its during operation, liquid fuel flows in the disc cavity throughoil inlet 2, insideshunt 3 gets into the disc, make and reach each oilhole fuel injection quantity equal through reposition of redundant personnel passageway 4, thereafter flow through heterotypic vortex blade 5 and bubble type vortex post 6 in proper order, because the high-speed rotation of disc main part 1, the fuel is got rid of in vortex blade and vortex post region, through tearing, alternately, the diversion back, the atomization effect of liquid stream is better, the expansion cone angle is bigger, more abundant with the air mixing in the combustion chamber. And theopposed jet nozzles 7 enable the tissue combustion to be more sufficient, and the outlet temperature field distribution to be more uniform.

Claims (5)

1. The utility model provides a dual vortex combination formula oil slinger which characterized in that: the oil thrower comprises a plate body, a cap cover flow divider, special-shaped turbulence blades, a bubble type turbulence column and an inclined hedging nozzle; the disc body is integrally cylindrical, the central area is in a semi-through state and is used for being mounted on the rotating shaft, and the diameter of the inlet hole is slightly larger than the diameter of the bearing by 25 mm; one side of the hood separator is perforated and matched with an inlet with the diameter of 28mm, an oil outlet penetrating through a central hole channel is designed on the circumference, the hole diameter is 1.5mm, and the oil outlets are distributed at every 15 degrees according to the central angle; the special-shaped spoiler blades are similar to turbine blades in shape, the head end and the tail end of each special-shaped spoiler blade are twisted by an angle of 12-18 degrees, and a channel between the blades is used for enabling a working medium to collide with a wall and be crushed; three bubble type turbulence columns are distributed at the outlet of each fuel oil channel, the three turbulence columns are different in size and have the diameters of 3 mm, 4 mm and 5mm respectively, and 24 groups of turbulence columns jointly form a turbulence area.

2. The dual turbulator combined oil slinger of claim 1, wherein: the diameter of the disk body is 200mm, and the diameter of the oil inlet hole is 28 mm.

3. The dual turbulator combined oil slinger of claim 1, wherein: the shunt is a cap structure with an inverted buckle, the aperture of the side surface is 1.5mm, and the number of the shunt is 24.

4. The dual turbulator combined oil slinger of claim 1, wherein: an oil throwing channel with a rotating direction is formed between the special-shaped turbulence blades and is uniformly distributed at the outlet of each flow equalizing plate.

5. The dual turbulator combined oil slinger of claim 1, wherein: the outlet of the oil throwing channel is provided with a bubble type turbulence column which is formed by combining three groups of turbulence columns with different sizes, and the diameters of the turbulence columns are respectively 3 mm, 4 mm and 5 mm.

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