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冷凝器的密封选择有哪些好处?

2019-01-02 09:59:32 无锡科达脚手架厂 阅读

在搅拌与冷凝器结合处的密封的选择对于密封效果、使用安全、节约成本等都显得特别重要。首先要明确密封选择的依据:一是釜内的工作压力,二是工作物料的性质。还有一个就是设备的工作温度。其次要明确冷凝器所用密封的类别,冷凝器所用密封即通常所说的轴封有两类:一是填料密封,二是机械密封,机械密封又分为单机封(即单端面机械密封)和双机封(即双端面机械密封),单机封全套还包括水夹套,双机封则较为复杂,除水夹套(必须有循环冷却水)外,还包括配套的支架、平衡罐等。

Sealing selection at the joint of stirring and condenser is particularly important for sealing effect, safety and cost saving. First of all, the basis for sealing selection should be clear: first, the working pressure in the kettle, and second, the nature of working materials. Another is the working temperature of the equipment. Secondly, it is necessary to clarify the types of seals used in condensers. There are two types of seals used in condensers, i.e. packing seals and mechanical seals. Mechanical seals are divided into single seal (i.e. single-end mechanical seals) and double seal (i.e. double-end mechanical seals). The complete set of single seal also includes water jacket. The double seal is more complex, except water jacket (there must be circulating cooling water). It also includes supporting brackets, balancing tanks and so on.

如何选择合适的密封:在常温常压,物料没有挥发性也不易燃易爆的使用条件下,要选择填料密封;在压力小于4公斤,物料的易挥发性和易燃易爆性一般的使用条件下,就要选择单机封;在工作压力超过4公斤(但要小于10公斤),物料的易挥发性和易燃易爆性很强的使用条件下,则必须选择双机封。各种密封的优缺点:填料密封价格最便宜,但只适合普通的使用条件和物料;单机封价格适中,可以在大多数使用条件下通用;双机封价格最贵,但在苛刻的工作条件下必须使用。

How to choose the appropriate seal: under normal temperature and pressure, materials without volatility or flammability and explosion, filler seal should be selected; under general conditions of pressure less than 4 kg, volatility and flammability and explosion of materials, single seal should be selected; under working pressure more than 4 kg (but less than 10 kg), volatility and flammability and explosion of materials are very strong. Under the condition of use, double seals must be selected. Advantages and disadvantages of all kinds of seals: packing seals are the cheapest, but only suitable for ordinary use conditions and materials; single seals are moderately priced and can be used in most use conditions; double seals are the most expensive, but they must be used under harsh working conditions. 

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