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Double-channel fuel nozzle with adjustable valve

A fuel nozzle and adjustable technology, applied in the direction of combustion chamber, combustion method, combustion equipment, etc., can solve the problems of valve performance decline and difficult recovery, and achieve the effect of avoiding pressure bearing performance decline.

Active Publication Date: 2020-10-16
CHENGDU HOLY AVIATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dual-channel fuel nozzle with an adjustable valve, which solves the problem that the performance of the valve decreases after a long period of use and it is difficult to recover

Method used

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  • Double-channel fuel nozzle with adjustable valve
  • Double-channel fuel nozzle with adjustable valve
  • Double-channel fuel nozzle with adjustable valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] based on Figure 1-11 As shown, a dual-channel fuel nozzle with an adjustable valve includes a T-shaped nozzle housing 1, an oil separator 2, a valve device 3, and a valve plug 4 for fixing the valve device 3. The T-shaped structure The nozzle housing 1 is provided with an oil inlet hole 14, a valve cylinder 13 and a valve plugging hole 15 sequentially in the horizontal section of the T-shaped structure, and the valve cylinder 13 is sequentially provided with an oil separator 2 and a valve device along the direction of the valve plugging hole 15 3 and the valve plug 4, the valve cylinder 13 includes the main oil cylinder 131 and the auxiliary oil cylinder 132 arranged in sequence along the direction of the valve plugging hole 15, the nozzle housing 1 of the T-shaped structure is in the vertical section of the T-shaped structure and is far away from the T One end of the horizontal section of the shaped structure is provided with a nozzle 16, and the main oil cylinder 131...

Embodiment 2

[0038] Based on Embodiment 1, the valve device 3 includes a valve cylinder body 31, and a movable block 32, a spring 33 and a spring support seat 34 arranged in sequence in the valve cylinder body 31 for opening and closing the oil circuit, the valve cylinder body The end of 31 close to the oil inlet hole 14 is provided with a seal ring groove 311 for inlaying the seal ring 5, and the middle part of the valve cylinder 31 is provided with an oil passage hole b312 for connecting the inner cavity of the valve cylinder body 31 and the inner cavity of the auxiliary oil cylinder 132. One end of the inner surface of the valve cylinder 31 near the valve plug 15 is provided with a section of internal thread 313 that matches the external thread 341 on the spring support seat 34. The oil through hole a321 that passes into oil in 31.

[0039] When the oil pressure is lower than the preset oil pressure, the oil flows to the main oil cylinder 132 through the oil inlet hole 14 through the oi...

Embodiment 3

[0042] Based on Embodiment 2, the two ends of the spring are embedded on the movable block 32 and the spring support seat 34 respectively.

[0043] The side of the oil separator 2 close to the valve device 3 is provided with a plurality of protrusions 21 distributed in an annular array around the center of the oil separator 2 .

[0044] The oil flows into the main oil cylinder 131 through the gap between the protrusions 21 on the diverter plate 2 .

[0045] The valve plug 4 is welded to the valve plug hole 15 on the nozzle housing 1 .

[0046] In the present invention, a bi-directionally adjustable valve device 3 is provided in the valve cylinder 13 of the nozzle housing 1, so as to avoid the pressure-bearing performance of the valve falling after a long time of use, and the need to replace the spring or adjust the gasket again, which is troublesome to operate. time-consuming problem.

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Abstract

The invention provides a double-channel fuel nozzle with an adjustable valve. The double-channel fuel nozzle comprises a nozzle shell of a T-shaped structure, an oil distribution disc, a valve deviceand a valve plug used for fixing the valve device, wherein an oil inlet hole, a valve cylinder and a valve plug hole are sequentially formed in the horizontal section of the T-shaped structure of thenozzle shell of the T-shaped structure; the oil distribution disc, the valve device and the valve plug are sequentially arranged in the valve cylinder in the direction of the valve plug hole; the valve cylinder comprises a main oil cylinder and an auxiliary oil cylinder which are sequentially arranged in the direction of the valve plug hole; a spray head is arranged at the end, away from the horizontal section of the T-shaped structure, of the vertical section of the T-shaped structure of the nozzle shell of the T-shaped structure; and the valve device is of a bidirectional adjustable structure. According to the double-channel fuel nozzle, the valve device capable of being adjusted in two directions is arranged in the valve cylinder in the nozzle shell, and therefore the problems that thepressure bearing performance of the valve is reduced after the valve is used for a long time, a spring or an adjusting gasket needs to be replaced again, operation is troublesome, and time and labor are wasted are solved.

Description

technical field [0001] The invention relates to the technical field of combustion, in particular to a dual-channel fuel nozzle with an adjustable valve. Background technique [0002] As an important part of the engine combustion chamber, the fuel nozzle's high quality and stable and reliable performance are of great significance to the aero-engine, and its working performance directly affects the power, fuel economy and reliability of the engine. The existing method of debugging the valve of a fuel nozzle with a valve generally adjusts the opening pressure of the valve by changing the thickness of the adjusting gasket to change the compression of the spring, and after a period of use, the spring force decays, and the performance of the valve needs to be restored Replace spring or adjust washer. Contents of the invention [0003] The purpose of the present invention is to provide a dual-channel fuel nozzle with an adjustable valve, which solves the problem of the valve's p...

Claims

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Application Information

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IPC IPC(8): F23R3/28
CPCF23R3/28
Inventor 吴建华严丽丽游江崔鸿一张云贵
Owner CHENGDU HOLY AVIATION SCI & TECH
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