Improved auxiliary oil way fuel nozzle valve sealing structure
A technology of fuel nozzle and auxiliary oil circuit, which is applied in the field of improved sealing structure of auxiliary oil circuit fuel nozzle valve
Active Publication Date: 2021-01-22
AECC SHENYANG ENGINE RES INST
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Problems solved by technology
[0008] The purpose of this application is to provide an improved sealing structure of the fuel nozzle valve in the auxiliary oil circuit to solve or alleviate at least one of the problems in the background technology
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[0050] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.
[0051] In order to overcome the shortcomings in the prior art, the present application provides a fuel nozzle valve structure of the auxiliary oil circuit.
[0052] Such as image 3 and Figure 4 As shown, the sealing structure 20 of the fuel nozzle valve of the secondary oil circuit provided by the present application includes: a fuel supply nozzle 21 for connecting with the fuel supply pipeline, a secondary nozzle interface 27 for connecting with the secondary nozzle, and a The housing 22 between the mouthpiece 21 and the sub-nozzle interface 27 . The housing 22 is a hollow structure, and a cavity is formed in it, and an opening door liner 231 is fixedly arranged in the cavity, and a plurality of oil lea...
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The invention provides an improved auxiliary oil way fuel nozzle valve sealing structure. The improved auxiliary oil way fuel nozzle valve sealing structure comprises an oil supply connecting nozzle,an auxiliary nozzle connector, a shell, an opening door lining fixed in a containing cavity, a plunger and an oil filter. The shell is arranged between the oil supply connecting nozzle and the auxiliary nozzle connector, and the containing cavity is formed in the shell. A plurality of oil leakage holes communicating with the oil supply connecting nozzle and the auxiliary nozzle connector are formed in the opening door lining. The plunger penetrates through the opening door lining and can move relatively, and the plunger is supported on the opening door lining through an opening spring. The oilfilter is arranged on one side, opposite to an fuel oil inlet, of the opening door lining and covers the oil leakage holes. The opening door lining is provided with a protrusion pointing to the plunger, the plunger is provided with a groove matched with the protrusion and a conical sealing face, soft sealing media are arranged in the groove, and the opening door lining is provided with a conicalchamfer matched with the conical sealing face. When fuel oil flowing in from the oil supply connecting nozzle cannot reach the preset pressure, the protrusion makes contact with the soft sealing media, and the fuel oil can be stored on one side of the oil supply connecting nozzle for the opening door lining.
Description
technical field [0001] The application belongs to the technical field of aero-engines, and in particular relates to an improved sealing structure of a fuel nozzle valve of an auxiliary oil passage. Background technique [0002] The fuel nozzle is a key component of the combustion chamber of an aero-engine and plays an important role in the performance of the engine. [0003] Such as figure 1 and figure 2 Shown is a schematic diagram of the fuel nozzle valve structure of the auxiliary oil circuit in the prior art. The nozzle valve structure 10 includes a fuel supply nozzle 11, a housing 12, a valve 13, an oil filter 14, a compression spring 15, a gasket 16, an auxiliary Nozzle interface 17 and sealing ring 18. The valve 13 includes an opening lining 131 , a plunger 132 , a limiting sleeve 133 , an opening spring 134 and a collar 135 . The secondary nozzle interface 17 includes a cone nozzle 171 and an external nut 172 . The oil supply nozzle 11 and the casing 12 ensure ...
Claims
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IPC IPC(8): F23R3/28
CPCF23R3/283
Inventor 莫妲张成凯
Owner AECC SHENYANG ENGINE RES INST