Portable non-contact spacecraft sealed compartment on-orbit leakage ultrasonic detector

Abstract

The invention discloses a portable non-contact spacecraft sealed compartment on-orbit leakage ultrasonic detector, comprising a plurality of ultrasonic sensors, a laser distance measuring sensor, a housing, a DSP digital processing circuit, an amplification filter circuit, an LCD, and an alarm lamp. The detector uses the high-sensitive ultrasonic sensors and the high amplification-multiple low-noise amplification filter circuit, and can effectively detect weak leakage signals on a leakage upstream. The detector uses an independent rechargeable lithium battery to supply power, and the housing is in a pistol form, so that portable non-contact leakage detection is realized, and leakage determination and positioning are realized through the alarm lamp and the LCD. On an upstream end, the leakage detector can detect a leakage hole of [phi]0.3 mm to the minimum, and the farest detectable distance is larger than 500 mm, so that the detector can satisfy manned spacecraft on-orbit leakage detection requirements.

Description

technical field [0001] The invention belongs to the technical field of spacecraft assembly leak detection, and in particular relates to an ultrasonic detector for on-orbit leakage of a non-contact spacecraft sealed cabin. Background technique [0002] With the development of acoustic detection technology, according to the principle of aeroacoustics, non-contact ultrasonic leak detection equipment is more and more widely used in the field of industrial leak detection, but there is no similar product in China, and mature products and equipment imported from abroad are used. For example, the UP9000 ultrasonic leak detector in the United States, the UL101 of Xtron Company, etc., but these leak detectors are mostly used in the case of pressure vessels, pressure pipelines, etc. leaking to the atmosphere, and the downstream of the leak detects the strong pressure generated by the fluid sprayed outward. Ultrasonic signals of leaks; in addition, these devices do not have functions su...

AI Technical Summary

Problems solved by technology

[0003] With the development of manned spaceflight technology, the reliability requirements of manned spacecraft are getting higher and higher, and the operating time in orbit is getting longer and longer, which makes the risk of in-orbit leakage of its sealed cabin body increasing. Sometimes, tiny leaks may lead to the failure of space missions, and even threaten the lives of astronauts

At present, in the field of aerospace, my country does not have the capability and equipment for on-orbit leak detection of spacecraft, and cannot accurately locate the location of the leak and evaluate the size of the leak.

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