一种用于单机热真空试验快速升降温的调温平台设计及应用

Design and application of a temperature control platform used for rapid heating and cooling in thermal vacuum test

当参与热真空试验的单机产品热容较大或有内热源存在时,增加热传导的方式有助于提高试验控温能力。文章针对某类单机产品的试验需求,研制具有快速升降温能力的调温平台。试验时将单机产品安装在该平台的安装面板上,平台下端面由液氮冷板提供冷边界,利用多通道控温系统对调温平台实施控温。对平台结构设计进行了热仿真和试验验证,试验温度和升降温速率均满足试验技术指标要求。目前该调温平台已成功应用于多项单机产品的热真空试验。

In the thermal vacuum test, for the test product with a large thermal capacity, or an internal heat source, the introduction of heat conduction might enhance the temperature control capability of the test. An engineering solution is to develop a kind of temperature control platform for the product tobe heated or cooled rapidly. During the test, the product is fixedon the installation panel of the platform, and the cold boundary is provided by the cold plate filled with liquid nitrogen at the bottom of the platform. Amulti-channel temperature control system is used to control the temperature of the platform, so thatthe temperature of the product may vary in accordance with the platform. The thermal simulation of the structural design of the platform is conducted, and validated by the follow-up test.The platform has been successfully applied in the thermal vacuum tests of some unit products, realizing the desirable temperature stability and cooling rate.