质子交换炉温度场均匀性分析与优化

伏娜; 张晞

doi:10.13700/j.bh.1001-5965.2018.0350

质子交换炉温度场均匀性分析与优化

doi: 10.13700/j.bh.1001-5965.2018.0350

伏娜,
张晞^,

北京航空航天大学仪器科学与光电工程学院, 北京 100083

详细信息

作者简介:
伏娜女, 硕士研究生。主要研究方向:铌酸锂光波导制备技术、系统建模与仿真

张晞女, 博士, 高级工程师。主要研究方向:光纤传感、信号处理等

通讯作者:
张晞, E-mail: zhangxi@buaa.edu.cn

中图分类号: TK175
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- 被引次数: 0
出版历程
- 收稿日期: 2018-06-11
- 录用日期: 2018-11-30
- 网络出版日期: 2019-04-20

Analysis and optimization of temperature field uniformity of proton exchange furnace

FU Na,
ZHANG Xi^,

School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100083, China

More Information

Corresponding author: ZHANG Xi, E-mail: zhangxi@buaa.edu.cn

摘要

摘要:
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。
- 铌酸锂光波导 /
- 质子交换炉 /
- 温度场 /
- 均匀性 /
- 数值模拟
Abstract:
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.
- LiNbO₃ waveguides /
- proton exchange furnace /
- temperature field /
- uniformity /
- numerical simulation

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图 1 质子交换炉系统实际模型

Figure 1. Practical model of proton exchange furnace system

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图 2 3种控温方式的传感器位置布置

Figure 2. Sensor position arrangement of three kinds of temperature control methods

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图 3 整段控温时传感器位置对质子交换炉均匀性的影响

Figure 3. Effect of sensor position on uniformity of proton exchange furnace under only one temperature controller

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图 4 两段控温时传感器位置对质子交换炉均匀性的影响

Figure 4. Effect of sensor position on uniformity of proton exchange furnace under two temperature controllers

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图 5 三段控温时传感器位置对质子交换炉均匀性的影响

Figure 5. Effect of sensor position on uniformity of proton exchange furnace under three temperature controllers

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图 6 方案18、方案12、方案3的y=0截面的温度分布云图

Figure 6. Temperature distribution contour of y=0 cross-section for Scheme 18, Scheme 12 and Scheme 3

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表 1 边界条件的设置

Table 1. Boundary condition setting

边界名称	边界类型	边界条件	参数
炉顶	壁面	对流	传热系数=10W/(m²·K)自由流体温度为300K
炉壁	壁面	热流量	没有加热丝覆盖的壁面：热流量=0；有加热丝覆盖的壁面：热流量=UDF flux
炉底	壁面	热流量	热流量=0

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表 2 18种设计方案

Table 2. 18 kinds of design schemes

序号	控温方式	传感器位置布置	加热丝布置高度/m
1	整段控温	z=0	h=2Δh=0.4
2			h=3Δh=0.6
3			h=4Δh=0.8
4		z=0.2m	h=2Δh=0.4
5			h=3Δh=0.6
6			h=4Δh=0.8
7	两段控温	组合方式1	h=2Δh=0.4
8			h=3Δh=0.6
9			h=4Δh=0.8
10		组合方式2	h=2Δh=0.4
11			h=3Δh=0.6
12			h=4Δh=0.8
13	三段控温	组合方式1	h=2Δh=0.4
14			h=3Δh=0.6
15			h=4Δh=0.8
16		组合方式2	h=2Δh=0.4
17			h=3Δh=0.6
18			h=4Δh=0.8

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表 3 3种控温方式下的最佳方案对比

Table 3. Comparison of the best solutions under three temperature control methods

序号	最佳方案	最大偏差ΔT_max/℃
3	整段控温，传感器位置布置在z=0，加热丝布置高度h=4Δh	1.73
12	两段控温，传感器位置布置组合方式2，加热丝布置高度h=4Δh	0.95
18	三段控温，传感器位置布置组合方式2，加热丝布置高度h=4Δh	0.03

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