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A dual oil circuit fuel nozzle flow test tool

A fuel nozzle and flow testing technology, which is applied to fuel injection devices, measuring devices, engine testing, etc., can solve the problems of mutual oil leakage between two oil passages, coaxiality and assembly errors, and inconsistent working conditions. Accurate flow, eliminate oil channeling, good sealing effect

Active Publication Date: 2019-07-23
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: two sets of special tooling are required, the cost is high, the test efficiency is low, and the test state is inconsistent with the actual working state of the fuel nozzle; Cavity and bottom cup inner cavity, that is, over-positioning, and the coaxiality and assembly errors of the parts, if the bottom cup assembly 10 is not assembled in place, when testing the flow rate of the first oil passage 11, it is easy to be blocked and unreliable. The problem of oil channeling between the two oil passages caused inaccurate test data

Method used

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  • A dual oil circuit fuel nozzle flow test tool
  • A dual oil circuit fuel nozzle flow test tool
  • A dual oil circuit fuel nozzle flow test tool

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation of the invention will now be described with reference to the drawings and specific examples, which are explanations of the invention rather than limitations.

[0030] refer to figure 2 , a double oil circuit fuel nozzle flow test tool includes a mandrel 1, the upper part of the mandrel 1 is provided with a cover plate 5 for covering the hole 14 of the nozzle end cover, the upper end of the mandrel 1 is provided with a handle 6, and the handle 6 is provided with It has anti-slip knurling, which is convenient to hold when disassembling. The lower end of the mandrel 1 is provided with a plugging head 2 for inserting into the bottom cup assembly of the fuel nozzle to separate the shell and the first oil pa...

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Abstract

The invention discloses a flow measuring tool and method for a double-oil-way fuel nozzle. The flow measuring tool comprises a mandrel, and the lower end of the mandrel is a plug which is used for being inserted in a bottom cup assembly of the fuel nozzle to plug a first oil way. A first groove is formed in the outer circle of the lower end of the plug, and a first sealing ring which is used for being matched with an inner hole of the bottom cup assembly of the fuel nozzle to achieve circumferential sealing of the fuel nozzle is stored in the first groove. A second groove is formed in the lower end face of the plug, and a second sealing ring which is used for being matched with the bottom face of the bottom cup assembly to achieve end face sealing of the fuel nozzle is stored in the secondgroove. The total flow of the nozzle is measured firstly, then one oil way of the double-oil-way fuel nozzle is plugged through the flow measuring tool, thus the flow of the other oil way is measured, and the flows of the two oil ways are obtained, so that the method is simple, and the measuring accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of aero-engine fuel nozzle flow test, and in particular relates to a double-oil-circuit fuel nozzle flow test tool and a test method. Background technique [0002] For the structure of a certain type of aero-engine fuel nozzle, see figure 1 , which is a parallel dual-channel fuel nozzle, the oil passages are the second oil passage 12 and the first oil passage 11, the first oil passage 11 is equipped with a bottom cup assembly 10, and the bottom of the bottom cup assembly 10 is equipped with an apron to ensure the bottom The assembly gap between the cup assembly 10 and the first oil passage 11 is sealed. Its working process is as follows: oil enters the oil inlet 13, the oil supply pressure gradually rises from low, the second oil circuit 12 supplies oil all the time, when the oil supply to the nozzle reaches the pressure P 1 When the first oil circuit 11 is also open to supply fuel; at different pressure p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M65/00
CPCF02M65/001
Inventor 杨能阁吕阿鹏孙辉韩新艳路江英张靖
Owner AECC AVIATION POWER CO LTD
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