摄象管阴栅系统的传热计算和一种小功率阴极支撑体的设计

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THE CALCULATION OF HEAT TRANSFER OF THE CATHODEASSEMBLY IN A VIDICON AND THE DESIGN OF CATHODEASSEMBLY WITH SMALL POWER DISSIPATION

摘要: 本文介绍了一种摄象管阴栅系统的传热计算模型,对5种不同结构、不同功率的阴栅系统进行了电子计算机计算。通过计算得出了各处的温度、各相关部件间的热交换情况和系统的总耗散功率以及各参量对它们的影响。这些对设计阴栅系统有一定的指导意义。文中还给出了一种低功率(0.6W)钡镍阴极阴栅系统的设计。它具有牢固可靠、易于装配、速热(数秒可达工作温度)等优点。
Abstract: In this paper a model for calculation of heat transfer of the cathode assembly in vidicon has been given. Five cathode assemblies with different constructions have been calculated by computer. The calculated results prove the model is reasonable. In this paper, there are the following calculations: the temperatures at each part of the assembly; the heat radiation and conduction between different parts; the total power dissipation of the assembly and the influences of changing physical or geometrical parameters of the parts of the assembly on the totl power dissipation. Thi paper is helpfull to design a new cathode assembly.The design and experiment of the new cathode (Ba-Ni) assembly with small power dissipation is successful. The advantages of the new assembly is firm construction, easy assembling and quick heating (arriving at the operation temperature in a few seconds).