Simulation system for high-low-temperature environment of controlled flexible cavity body

Abstract

The invention discloses a simulation system for a high-low-temperature environment of a controlled flexible cavity body. The simulation system comprises a low-temperature cold source supply device, a vaporizer, an electric heater, an upper static pressure chamber, a lower static pressure chamber, a soft cover, an upper fixing piece, a lower fixing piece, a temperature sensor, a data acquisition instrument, a lifter device, a controller, a plurality of valves and a plurality of pipelines, wherein the soft cover is formed by compounding a plurality of aluminum-coated film reflection layers with fiber paper at an interval, the top of the soft cover is hermetically connected with the upper static pressure chamber through the upper fixing piece, and the bottom of the soft cover is hermetically connected with the lower static pressure chamber through the lower fixing piece, so that a volume-changeable sealed chamber is formed; the low-temperature cold source supply device is used for providing a low-temperature cold source and enabling a temperature field space of the soft cover to be in a low-temperature state through the vaporizer and the valves; the electric heater is used for providing heat and enabling the temperature field space of the soft cover to be in a high-temperature state; the lifter device is connected with the soft cover through the lower fixing piece and the lower static pressure chamber to drive the soft cover to reciprocate up or down. According to the simulation system, flexible high-low-temperature field can be generated and controlled through lower cost and a simple process.

Description

technical field [0001] The invention relates to a temperature-controlled high and low temperature environment flexible cavity simulation system, in particular to a variable volume generating device capable of realizing high and low temperature fields in a wide temperature range of -100°C to +130°C. Background technique [0002] In the fields of aerospace, automobile manufacturing, and power electronics, it is often necessary to carry out endurance tests, deformation tests, and aging tests on product components or complete machines under high or low temperature conditions. Therefore, it is necessary to comprehensively examine the adaptability or survivability of the product under extreme environmental conditions. For example, in the development of the space docking mechanism in space activities, the product needs to undergo physical testing of motion and survival performance under high and low temperature conditions on the ground before the official launch. The special featu...

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Problems solved by technology

[0003] At present, most of the high and low temperature environment simulators reported publicly are closed box-like spaces with a fixed structure, which cannot meet the application occasions where motion occurs in the aforementioned space, such as the "small high and low temperature test device" with the publication number CN102941131, and the publication number is CN2914080 "A New Type of High and Low Temperature Chamber Testing Machine" and Publication No. CN301704076S "High and Low Temperature Alternating Humidity Test Chamber (Photoelectric Type)"

Further, the "soft variable volume high and low temperature test chamber" with the publication number CN102091663 realizes the variable volume temperature field through the driving device and flexible materials, but its application environment is limited to the temperature range of -50°C to +50°C , and there are complex structures such as evaporative sprinklers in the system, the device is huge and the cost is high, and it is not suitable for miniaturized, low-cost, and rapid test applications

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