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Helicopter fuel flow sensor testing device

A technology of flow sensor and fuel flow, which is applied in the field of flow sensors, can solve the problems of standard flow sensor working error, failure to realize fuel delivery, and inability to respond to flow sensor working error, etc., and achieve high test accuracy, simple structure, and high degree of automation Effect

Pending Publication Date: 2021-02-02
CHANGSHA 5712 AIRCRAFT IND
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  • Abstract
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AI Technical Summary

Problems solved by technology

But above-mentioned method all has following deficiency: 1) existing test method is a kind of matching error test method, can't reflect flow sensor local working error, and standard flow sensor itself has working error; 2) existing test method can't realize pressurization and Oil delivery under negative pressure cannot simulate the real oil delivery situation of a helicopter

Method used

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  • Helicopter fuel flow sensor testing device
  • Helicopter fuel flow sensor testing device

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Embodiment Construction

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

[0029] like figure 1 and figure 2 As shown, the helicopter fuel flow sensor test device of the present embodiment includes a fuel tank 2 and a measuring cylinder 12, and a liquid level gauge 13 is arranged in the measuring cylinder 12; In the direction, a variable frequency motor oil pump group, an oil inlet switch 8, a flow sensor to be measured 10 and a first solenoid valve 14 are arranged in sequence; the oil inlet pipeline passes through the first oil return pipe at the connection between the flow sensor to be measured 10 and the first solenoid valve 14 The oil return line is connected with the oil tank 2, and the second solenoid valve 15 is arranged on the first oil return line; the second oil return line is also arranged between the oil tank 2 and the measuring cylinder 12, and the second oil return line is provided with a third oil ret...

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Abstract

The invention discloses a helicopter fuel flow sensor testing device. The device comprises a fuel tank and a measuring cylinder, and a liquid level meter is arranged in the measuring cylinder. The fuel tank is connected with the measuring cylinder through a fuel inlet pipeline, and the fuel inlet pipeline is sequentially provided with a variable-frequency motor fuel pump set, a fuel inlet switch,a to-be-measured flow sensor and a first electromagnetic valve in the fuel conveying direction. The fuel inlet pipeline is connected with the fuel tank through a first fuel return pipeline at the communication position of the flow sensor to be measured and the first electromagnetic valve, and a second electromagnetic valve is arranged on the first fuel return pipeline. A second fuel return pipeline is further arranged between the fuel tank and the measuring cylinder, and a third electromagnetic valve and a fuel return pump are sequentially arranged on the second fuel return pipeline in the fuel conveying direction. The device has the advantages of simple structure, simplicity and convenience in operation, accuracy in test, safety, reliability and the like.

Description

technical field [0001] The invention mainly relates to the technical field of flow sensors, in particular to a test device for a helicopter fuel flow sensor. Background technique [0002] The fuel flow sensor is installed on the fuel supply pipeline of the engine, which is used to convert the fuel flow through the sensor during the engine working process into an electrical signal and transmit it to the fuel quantity indicator, and display the remaining fuel quantity in the helicopter fuel tank through calculation, and the working error of the flow sensor It directly affects the accuracy of engine fuel consumption indication. [0003] The fuel flow sensor maintenance of a certain type of helicopter adopts the on-board condition-based maintenance method. The sensor is disassembled and replaced with the sealing rubber ring. After the test works normally, it is reinstalled and used. The working error performance of the sensor cannot be judged. Troubleshoot. In addition, there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
CPCG01F25/10
Inventor 蔡攀梁勇张真帅
Owner CHANGSHA 5712 AIRCRAFT IND
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