High and low torque pressure switch tester

A pressure switch and tester technology, applied in circuit breaker testing and other directions, to achieve the effects of simple external connection, flight protection, and reduced failure rate

Inactive Publication Date: 2014-05-28
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no testing equipment for this part in our laboratory

Method used

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the utility model is described in detail. The selection of components in the overall design process of the present invention conforms to the GJB546-1996 component quality assurance specification.

[0021] High and low torque pressure switch tester, the switch tester includes SPDT switches S1, S2, indicator lights L1, L2, fuse F and a voltmeter; among them, the DC power supply is connected to the SPDT switch S1 through the fuse F, and the SPDT One end of the switch S1 is connected to the SPDT switch S2, the other end of the SPDT switch S1 is connected to the voltmeter, one end of the SPDT switch S2 is connected to the indicator light L1, the other end of the SPDT switch S2 is connected to the indicator light L2, and the voltmeter , Indicator light L1 and indicator light L2 are connected to the negative terminal of the power supply.

[0022] During the test, connect the digital pressure gauge to the 220V AC power supply, an...

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PUM

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Abstract

The invention belongs to the technical field of aircraft electrical testing, and particularly relates to a high and low torque pressure switch tester. The switch tester comprises single-pole double-throw switches (S1) and (S2), indication lamps (L1) and (L2), a fuse (F) and a voltmeter. A DC source is connected with the single-pole double-throw switch (S1) via the fuse (F), one end of the single-pole double-throw switch (S1) is connected with the single-pole double-throw switch (S2), the other end of the single-pole double-throw switch (S1) is connected with the voltmeter, one end of the single-pole double-throw switch (S2) is connected with the indication lamp (L1), the other end of the single-pole double-throw switch (S2) is connected with the indication lamp (L2), and the voltmeter, the indication lamp (L1) and the indication lamp (L2) are connected with the cathode end of the source. On one hand, the tester can perform comprehensive performance testing on a high and low torque pressure switch, a fault product is prevented from being directly installed, and the efficiency and quality of an aircraft assembly are improved; and on the other hand, the test process is simplified, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aircraft electrical tests, in particular to a high and low torque pressure test switch. Background technique [0002] The high and low torque pressure switch is used in the propeller automatic feathering system. This system is mainly used for automatic feathering of the propeller to reduce flight resistance when one engine fails and stops during takeoff. The automatic feathering system consists of a slide plate assembly, high and low torque pressure switches, an overspeed regulator electromagnetic valve, control switches and electrical circuits. The high and low torque pressure switch plays a vital role in this system, and it must be checked before installation to ensure its good performance, otherwise it will affect the work of the entire automatic feathering system. At present, there is no testing equipment for this part in our laboratory. [0003] The propeller automatic feathering system is mainly u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
Inventor 杨俊杰刘欣宁春玲
Owner HARBIN
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