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本文介绍了广泛应用于化工特别是石油化工等各种可燃易爆场合的红外线分析器的防爆结构设计。比较详细地讨论了B3d防爆结构中防爆结合面的结构形式及其设计依据,各防爆参数的选择和确定,防爆壳体的材料及加工中应注意的问题,以及几个防爆要素的具体结构(如仪器的观察窗、接线柱和阻火元件的具体结构)等。并与流程分析仪器中常见的其他结构形式作了比较。此外对隔爆试验作了简单介绍。本文对其他隔爆型流程分析仪器的防爆结构设计也有参考价值。
This article introduces the design of the explosion-proof structure of the infrared analyzer which is widely used in various flammable and explosive occasions such as chemical industry, especially petrochemical industry. The structure and design basis of the explosion-proof joint surface in B3d explosion-proof structure are discussed in detail, the selection and determination of each explosion-proof parameter, the material of the explosion-proof shell and the problems that should be paid attention to in processing, as well as the concrete structure of several explosion-proof elements Such as the observation window of the instrument, the specific structure of the terminal and the fire retardant element). It is compared with other structural forms commonly found in process analytical instruments. In addition to the flameproof test made a brief introduction. This text also has the reference value to the explosion-proof structure design of other explosion-proof flow analysis instruments.