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Fuel nozzle processing method, fuel nozzle

A technology of fuel nozzles and processing methods, which is applied in the direction of fuel injection devices, charging systems, machines/engines, etc. It can solve the problems of oil leakage rate, high oil leakage rate, low part qualification rate, and many maintenance times, and achieve repair Rate reduction, high processing efficiency, avoiding the effects of parts rework or scrap

Active Publication Date: 2021-09-28
CHINA HANGFA SOUTH IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a fuel nozzle processing method and a fuel nozzle to solve the technical problems of poor sealing performance of the existing fuel nozzle, high oil leakage rate, high oil seepage rate, many maintenance times, and low qualified rate of parts

Method used

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  • Fuel nozzle processing method, fuel nozzle
  • Fuel nozzle processing method, fuel nozzle
  • Fuel nozzle processing method, fuel nozzle

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] figure 1 is a schematic diagram of the preferred fuel nozzle of the present invention; figure 2 It is a schematic diagram of the grinding process of the preferred fuel seat graphite grinding wheel of the present invention; image 3 It is a schematic diagram of the inverted cone structure of the preferred main nozzle of the present invention.

[0029] Such as figure 1 As shown, a preferred embodiment of the present invention provides a method for processing a fuel nozzle, comprising the following steps:

[0030] S1. Process the nozzle seat 1 with the first oil passage 6 and the second oil passage 7. The outer wall of the nozzle seat 1 is processed with external threads that match the...

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Abstract

The invention discloses a fuel nozzle processing method and a fuel nozzle, comprising the following steps: processing a nozzle seat with a first oil passage and a second oil passage; the oil inlet end face of the nozzle seat is milled to remove part of the surplus, Then use graphite grinding wheel to grind to remove the remaining margin to obtain the nozzle seat; assemble the swirler and the auxiliary nozzle, and use turning to remove the machining allowance on the oil outlet end face of the assembled swirler and the auxiliary nozzle to obtain the auxiliary nozzle. Nozzle assembly; process the main nozzle and process the stepped surface on the main nozzle for the compression of the nozzle cap into an inverted cone structure, and then assemble the main nozzle and the auxiliary nozzle assembly into a nozzle assembly; cold assemble the nozzle assembly to the inlet of the nozzle seat The assembly is obtained at the end face of the oil end; the nozzle cap is pressed against the inverted cone structure of the main nozzle by external force and threaded with the nozzle seat to obtain the fuel nozzle. According to the processing method of the fuel nozzle of the present invention, the qualified rate of the nozzle sealing test is improved.

Description

technical field [0001] The invention relates to the field of aero-engine fuel nozzles, in particular to a method for processing fuel nozzles. In addition, the present invention also relates to a fuel nozzle prepared by the above fuel nozzle processing method. Background technique [0002] The fuel nozzle is the main component of the combustion chamber of an aero-engine. The sealing performance of the fuel nozzle is an extremely critical indicator. When the fuel supply pressure is high, oil leakage will not only affect the combustion and reduce the working performance, but also threaten the safety of the engine. In the fuel nozzle device, the nozzle cap and the nozzle seat are fastened in the vertical direction by threaded connection. By controlling the size of the pressing force, the nozzle cap transmits the force to the auxiliary nozzle, and the auxiliary nozzle and the oil outlet of the swirler The end face is attached to the oil inlet end face of the nozzle seat, and und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F02M61/18
CPCB23P15/00B23P15/008F02M61/18
Inventor 王亚平杨建辉施跃幸罗俊卿徐舟张金梅
Owner CHINA HANGFA SOUTH IND CO LTD
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