Aircraft pressure detection equipment and application method thereof

Abstract

The invention relates to the technical field of pressure detection, in particular to aircraft pressure detection equipment and an application method thereof. The aircraft pressure detection equipmentis especially suitable for the implementation of nitrogen gas inflation, deflation and pressure measurement operation on an aircraft main landing gear buffering pillar, a front landing gear bufferingpillar and a hydraulic pressure accumulator or an emergency landing gear pneumatic system. The aircraft pressure detection equipment comprises a valve body, a product connection port, a gas inflationand deflation connection port and a measuring connection port, and the valve body is internally provided with a measuring channel, a gas inflation and deflation channel and a product connection channel and internally connected with the three channels, so that not only is the ventilation connection strength improved, but also the space of a connection cavity, the measurement errors and the pressureloss are reduced. The gas inflation and deflation channel and the product connection channel are communicated with the measuring channel separately, the gas inflation and deflation channel is provided with a sealing stop valve used for accurately controlling the opening degree of the gas inflation and deflation channel, the product connection channel is provided with a sealing top rod, and a one-way valve of a product is controlled by rotating the sealing top rod to open or close the air path of the product.

Description

technical field [0001] The invention relates to the technical field of pressure detection, in particular to an aircraft pressure detection device and a method for using the same. It is especially suitable for nitrogen inflation, deflation and pressure measurement operations on the main landing gear shock strut, front landing gear shock strut, hydraulic pressure accumulator or emergency landing gear pneumatic system. Background technique [0002] Aircraft maintenance work often uses the pillar pressure checker, which is mainly used for the measurement and inflation / deflation of nitrogen pressure in the main landing gear buffer pillar, front landing gear buffer pillar, hydraulic accumulator and emergency landing gear pneumatic system. . The main problems of existing equipment are as follows: [0003] 1. Heavy weight. The net weight of the inspection instrument is 2.0 kg, and the product interface is easily damaged during use. [0004] 2. The volume is large. The total weig...

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Problems solved by technology

The net weight of the inspection instrument is 2.0 kg, and the product interface is easily damaged during use

[0004] 2. The volume is large. The total weight of the inspection instrument together with the protective box is generally more than 4.5 kg. The size of the box is generally 40 cm x 30 cm x 15 cm. It is inconvenient to carry and use for daily use, and the air co-rotation takes up the capacity

The above separation design leads to an increase in the volume and weight of the detector, and the pressure loss of the product cavity before and after measurement is large, resulting in errors

High-pressure resistant rubber tubes are prone to aging during use, and the aging degree needs to be checked regularly to ensure the pressure resistance requirements. If the detection is not in place, the measurement accuracy will be low or the equipment cannot be used for measurement.

[0006] 4. The mechanical measuring gauge is bulky and heavy, and there is a lot of residual gas in the instrument cavity during the measurement. The measured pressure and the actual pressure of the measured object after measurement have a large error, and it is easy to cause reading errors due to differences in the reading angle of the operator.

[0007] 5. The sealing of the interface between the inflation valve and the detection object of the existing equipment is prone to aging. Inflate / deflate the main landing gear buffer strut, the front landing gear buffer strut, the hydraulic accumulator or the emergency landing gear system, etc. It is easy to cause air leakage problem, and the inflation / deflation operation and measurement are not easy to complete

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