摘要
目的:研究西门子医用质子重离子同步加速器冷却水系统温度控制的方法。方法:将回水温度变化作为控制程序的输入变量,采用预测方法控制阀门开度,并增加回水端水箱容量以提高温度缓冲能力。结果:优化后的系统能够适应质子重离子加速器多种负载状态,对32℃以内的冷却水负载能够消除2℃峰值,使进水温度控制在(27±1)℃以内。故障统计发现,温度偏离故障率由原来的64%降低至8%。结论:优化后的3层循环结构冷却水系统能够适应西门子质子重离子同步加速器的运行要求。
Objective To study the temperature control method of the cooling water system for Siemens medical proton and heavy-ion synchrotron. Methods The return water temperature was used as the input variable of the control program,temperature prediction method was applied to controlling valve opening, and the capacity of water tank at backwater-side was increased to enhance temperature buffer capability. Results The optimized system adapted itself to multi loading conditions of the synchrotron, which achieved 2 ℃ peak elimination in case of return water at 32 ℃ or less to limit the input water temperature within（27 ±1） ℃. The failure rate of temperature deviation was decreased from 64% to 8%. Conclusion The optimized cooling water system with three-layer structure fulfills the requirements of Siemens proton heavy-ion synchrotron operation.
出处
《医疗卫生装备》
CAS
2017年第6期33-35,共3页
Chinese Medical Equipment Journal
基金
上海市科委科研计划项目(16511102500)
关键词
质子
重离子
同步加速器
冷却水
温度控制
proton
heavy ion
synchrotron
cooling water
temperature control
