Test device system of sand/dust environment

Abstract

The invention discloses a test device system of a sand / dust environment, which comprises a circulation air passage, a material return device, a feeding device and a material removal device. The circulation air passage sequentially comprises a test section, a sand / dust separation section and an air return section, wherein the feeding device and the material removal device are connected with the sand / dust separation section of the circulation air passage. The section width of the sand / dust separation section is greater than the section width of the test section, a funnel shape is formed at the bottom of the sand / dust separation section, and a material return opening at the bottom end of the funnel is connected with the material return device. A sand / dust material entering the material return device from the sand / dust separation section is conveyed back into the circulation air passage by a feeding opening under the drive of a material return blower. A sensor used for monitoring the sand / dust concentration is also arranged in the test section, the feeding device is controlled to be selectively opened according to the sand / dust concentration monitored by the sensor so as to replenish the sand / dust material into the circulation air passage, and the material removal device is controlled to be selectively opened so as to remove the redundant sand / dust material from the circulation air passage, thereby regulating the sand / dust concentration accurately at real time.

Description

technical field [0001] The invention relates to a sand / dust environment test device system, more specifically, to a sand / dust environment test device system capable of accurately adjusting the sand / dust concentration in a circulating air duct in real time. Background technique [0002] The sand / dust environment test is an important means to test the environmental adaptability and environmental reliability of vehicles, aircraft, electrical equipment, military equipment, etc. in deserts, arid areas and windy sand weather conditions. At present, the test device systems for simulating flying dry sand or dust-filled sand / dust environment mainly include three types: sand blowing test system, dust blowing test system and more advanced ones that can be used for both sand blowing test and dust blowing test. Sand / dust combined test system. [0003] The sand / dust environment test device system generally includes a circulating air duct that simulates the wind speed environment, a sand / ...

AI Technical Summary

Problems solved by technology

The "sampling and weighing method" is a relatively primitive measurement method. Although the measured data has high accuracy, it takes a long time to measure and has no electrical signal output. Unable to cooperate with intelligent control system for real-time measurement and control of dust concentration

However, the use of photoelectric technology for monitoring can only monitor larger dust particles in the air. At the same time, the installation and maintenance of optical mirrors is more difficult, and its scope of use is narrow.

Images