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Fuel gauge return valve and fuel gauge

A technology of oil return valve and metering valve, which is used in volume measurement, measurement capacity, instruments, etc., can solve the problems of low control accuracy and large fuel consumption, so as to improve control accuracy, overcome poor control accuracy and reduce response speed. Effect

Active Publication Date: 2021-05-04
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a fuel oil return valve and a fuel oil meter to solve the problems of low control accuracy of the oil return valve and large fuel consumption in the prior art

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  • Fuel gauge return valve and fuel gauge
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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0030] In describing the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplifie...

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Abstract

The invention relates to an oil return valve of a fuel meter and a fuel meter, wherein the oil return valve of a fuel metering device includes a casing, an oil return window arranged on the casing, and a proportional control device and an integral control device arranged in the casing. The proportional control device can move relative to the oil return window to adjust the flow rate of the oil return window when the pressure difference between the inlet and outlet of the metering valve changes. The movement of the proportional control device can reduce the pressure in the control chamber of the integral control device, thereby The integral control device can move relative to the oil return window to realize further adjustment of the flow rate of the oil return window. The oil return valve in the present invention is a compound oil return valve integrating proportional control and integral control, which can not only overcome the problem of poor control accuracy caused by simple proportional control, but also overcome the problems of simple integral control. Response speed requires a large amount of control fuel to be consumed.

Description

technical field [0001] The invention relates to the technical field of fuel metering, in particular to a fuel return valve of a fuel meter and a fuel meter. Background technique [0002] At present, the fuel metering device of the main combustion chamber of an aero-engine usually uses a fixed displacement pump as the fuel supply pump, and the fuel metering device supplies fuel to the combustion chamber according to the fuel supply command. flow, so the fuel metering device needs to return excess fuel to the fuel pump, and the return of fuel is achieved by the return valve. The principle of fuel return is to drive the opening of the oil return valve through constant pressure difference control to realize dynamic adjustment and control of the oil return flow. The higher the control accuracy, the higher the accuracy of fuel metering, which is more conducive to the precise control of engine speed , so as to reduce engine fuel consumption. [0003] The traditional oil return va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F11/28G01F15/00
CPCG01F11/28G01F15/005
Inventor 卢前顺杨永敏
Owner AECC COMML AIRCRAFT ENGINE CO LTD