Airplane direct current appliance function detector

A technology of DC equipment and detectors, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve problems such as control line status inspection, difficulty in rapid fault location, difficulty in aircraft maintenance, etc., to improve attendance rate, shorten troubleshooting cycle, The effect of shortening the duty cycle

Inactive Publication Date: 2013-06-05
CHINESE FLIGHT TEST ESTAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In daily maintenance work, when there is often doubt about the reliability of the internal DC equipment of a certain system (such as electric mechanism, electric valve, etc.), traditional troubleshooting methods can only be used for simple measurements (such as access, open , resistance, grounding, etc.), but cannot check the situation such as: the sticking of the electric mechanism, the state of the control circuit after switching on, etc.
This requires an in-depth investigation after the DC equipment is powered on independently. Otherwise, the equipment needs to be disassembled for in-field calibration or return to the factory for inspection and verification, which will cause certain difficulties in quickly locating the fault, and the work efficiency is extremely low; During periodic work, it is required to perform performance testing on independent equipment such as the electric mechanism, such as checking the opening and closing of the electric mechanism, and checking whether the time of the working stroke meets the technical requirements
However, there is no such special testing equipment in the current outfield maintenance work of the aircraft, which causes certain difficulties to the maintenance work of the aircraft

Method used

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  • Airplane direct current appliance function detector
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  • Airplane direct current appliance function detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1. Carry out the electric mechanism of a certain type of aircraft environmental control system (taking the emergency ventilation electric valve as an example)

[0038] Periodic regular inspection or fault determination work

[0039] Such as figure 2 Connect the power cord and test cable to the function tester as shown, put the power switch in the "off" position, put the detection replacement switch in the "neutral" position, connect the power cord plug with the ground power vehicle (28.5±1V ), and connect each test cable and emergency ventilation electric valve to X 2-2 .

[0040] a. Turn on the power switch of the functional tester, the green light of the power indicator is on, the voltage indicator shows the ground voltage, the current indicator shows "00.000", and the timer shows "000.00";

[0041] b. Turn the detection switch to the "off" position, press the check button, at this time the "off" green light is on, wait until the "fully closed" red ligh...

Embodiment 2

[0045] Embodiment 2. Carrying out inspection without end position signal feedback of electric mechanism, valve, switch performance or fault judgment work

[0046] Such as image 3 Connect the power cord and test cable to the function tester as shown, put the power switch in the "off" position, put the detection replacement switch in the "neutral" position, connect the power cord plug with the ground power vehicle (28.5±1V ), and connect each test cable and the tested electric mechanism, valve, switch to the corresponding special plug.

[0047] a. Turn on the power switch of the functional tester, the green light of the power indicator is on, the voltage indicator shows the ground voltage, the current indicator shows "00.000", and the timer shows "000.00";

[0048]b. Put the detection switch in the "open" position, press the check button, at this time the "open" green light is on, the test ammeter displays the working current, and at the same time observe the changes in the el...

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PUM

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Abstract

The invention provides an airplane direct current appliance function detector which can be used for detecting online (not leave the position) to eliminate the labor intensity of plane workers and to shorten fault locating time or periodical inspection for an airborne equipment electrical performance. The technical scheme of the airplane direct current appliance function detector comprises a power socket. The front end of the power socket is connected with the front end of a power switch through a power circuit breaker. The front end of the voltage indicator, the front end of the current indicator, the front end of the timer and the front end of the power light are respectively connected with the back end of the power switch. The back end of the current indicator is connected with a detective button. The back end of the timer and a three-position change-over switch are respectively connected with the detective button through a detective circuit breaker. An opening signal light and the front end of the electric movable valve loading are respectively connected with one road of the three-position change-over switch through a testing socket. A full opening signal light is connected with the back end of the electric movable valve loading.

Description

technical field [0001] The invention belongs to aviation auxiliary equipment and relates to an aircraft DC equipment function detector. Background technique [0002] In daily maintenance work, when there is often doubt about the reliability of the internal DC equipment of a certain system (such as electric mechanism, electric valve, etc.), traditional troubleshooting methods can only be used for simple measurements (such as access, open , resistance, grounding, etc.), but it is impossible to check the situation such as: the sticking of the electric mechanism, the state of the control circuit after being connected. This requires an in-depth investigation after the DC equipment is powered on independently, otherwise, the equipment needs to be disassembled for in-field calibration or return to the factory for inspection and verification, which will cause certain difficulties in quickly locating the fault, and the work efficiency is extremely low; During periodic work, it is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 韩旭李国庆刘杰霍佳喜黎绍辉
Owner CHINESE FLIGHT TEST ESTAB
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