Automatic Control System of Oil Circuit Precision for Engine Fire Resistance Test

A technology of automatic control and fire resistance test, applied in the field of oil circuit precision, can solve the problems that the precision cannot be improved

Active Publication Date: 2021-07-27
THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide an automatic control system for the accuracy of the fuel circuit of the engine fire resistance test, so as to solve the problem that the accuracy cannot be improved on the basis of the existing aero-engine fuel system

Method used

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  • Automatic Control System of Oil Circuit Precision for Engine Fire Resistance Test
  • Automatic Control System of Oil Circuit Precision for Engine Fire Resistance Test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one is basically as attached figure 1 Shown: The automatic control system for the accuracy of the oil circuit in the engine fire resistance test, which is connected to the fuel pump regulator 1, the fuel distributor 2, the fuel main pipe 3, the fuel nozzle 4 and the fuel drain valve 5 to control the amount of corresponding fuel output A stage detection control circuit and a general control circuit connected with all detection control circuits; the general control circuit detects and controls the oil output of each component step by step according to the preset order.

[0023] Each detection control circuit includes a flow sensor and a solenoid valve; the solenoid valve includes a plurality of rotation angle states for controlling the size of the fuel passage.

[0024] The detection and control circuit of each stage detects the oil output of each component oil outlet through the flow sensor, and adjusts the size of the oil outlet through the rotation angle sta...

Embodiment 2

[0054] like figure 2 As shown, the detection and control circuit of each stage in this embodiment is different from that of Embodiment 1. The detection and control circuit of each stage in this embodiment is specifically a circuit circuit installed along the direction of the fuel main pipe 3. In the counterclockwise direction, the outlet of the fuel tank is respectively Connect with four branches.

[0055] The first branch includes a first ball valve 41 , a first oil suction filter 131 , a first oil pump 21 and a second ball valve 42 sequentially connected to the outlet of the oil tank, wherein the first oil pump 21 is connected to the first variable frequency motor 11 .

[0056] The second branch circuit includes a third ball valve, a second oil suction filter, a second oil pump and a fourth ball valve sequentially connected from the outlet of the oil tank, wherein the second oil pump is connected with the second frequency conversion motor.

[0057] The third branch include...

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Abstract

The invention relates to the technical field of oil circuit accuracy, and discloses an engine fire resistance test oil circuit accuracy automatic control system. A multi-level detection control circuit for oil output and a general control circuit connected with all detection control circuits; the total control circuit detects and controls the oil output of each component step by step according to a preset sequence. The present invention precisely controls the oil output of the entire fuel system by detecting and controlling each component in the engine fuel system step by step, thereby accurately simulating the working condition of the entire engine.

Description

technical field [0001] The invention relates to the technical field of oil circuit accuracy, in particular to an automatic control system for oil circuit accuracy of an engine fire resistance test. Background technique [0002] The fuel system of an aircraft engine mainly includes a fuel pump regulator, a fuel distributor, a fuel manifold, a fuel nozzle and a fuel drain valve. The accuracy of each component is directly related to the accuracy of fuel injection. Especially the fuel distributor and fuel pump regulator. [0003] Among them, in the current design of the fuel distributor, the fuel pressure and the spring force are usually used to act on the valve. When the fuel pressure increases to a certain extent, the main and auxiliary fuel oil circuits are respectively connected to the main and auxiliary fuel oil circuits to realize the main and auxiliary fuel oil circuits of the engine. Fuel distribution in lines. In order to avoid carbon deposits in the fuel nozzle, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/26G01M15/02G01M15/14
CPCF02C9/26G01M15/02G01M15/14
Inventor 包雯婷王玉琢陈龙于新华谢飞
Owner THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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