质子交换炉温度场均匀性分析与优化

针对质子交换炉的温度场均匀性问题，结合质子交换炉的结构特点，基于FLUENT用户自定义函数（UDF）开发了质子交换炉炉温控制算法，并在此基础上提出了多种加热控温方案；利用FLUENT软件对不同方案下的质子交换炉温度场进行仿真，分析不同控温方式下炉内温度场均匀性与传感器位置布置、加热丝布置高度的关系，找到最佳方案。结果表明:采用三段控温、3个传感器位置分别布置在3段加热丝中间、加热丝布置高度4倍于均匀温区长度时炉内温度场均匀性最好，均匀温区内最大偏差为0.03℃；对于既定结构的立式炉体，增加加热丝布置高度、优化设计传感器布置方案和炉体控温方式可以提高温度场均匀性。该方法为同类电加热炉温度场均匀性的优化设计提供了思路。 

Analysis and optimization of temperature field uniformity of proton exchange furnace

Aimed at the problem of temperature field uniformity of proton exchange furnace, combined with the structural characteristic of the furnace, temperature control algorithm was developed based on FLUENT user-defined function (UDF). Based on this, various heating and temperature control schemes were proposed. The FLUENT software was used to simulate temperature field of the furnace under different schemes. The relationship between the temperature field uniformity and the placement of the sensor and the height of the heating wire under different temperature control methods was analyzed to find the best scheme. The results show that the temperature field uniformity is best when three temperature controllers are used, the positions of three sensors are respectively arranged in the middle of three heating wires, and the height of heating wire is arranged 4 times the length of the uniform temperature zone. The maximum temperature deviation in the uniform temperature zone is 0.03℃. For a given structure of the vertical furnace, increasing the height of the heating wire and optimizing the design of the sensor layout and temperature control method of the furnace body can improve the temperature field uniformity. This method provides ideas for optimizing temperature field uniformity of the same type of electric heating furnace.