Design requirements for fluid mechanical seals-

Design requirements for fluid mechanical seals

　2016-12-07　　

In order to adapt to the renewal of process equipment, technological transformation, and to ensure the long-term safe operation of existing production equipment and reduce unplanned shutdowns, fluid seals with small leakage, high reliability, long life and wide adaptability have always been the industry Technical problems that have been widely concerned and hoped to be resolved.

The requirements for sealing in engineering and daily life mainly include the following aspects:

(1) Reliable sealing and less leakage. Most of the materials produced in petrochemical and chemical industries are flammable, flammable, and explosive materials. Leakage will not only cause economic losses, but also cause personal poisoning and environmental pollution. Therefore, it is required that the sealing of the seals must be reliable, have a small amount of leakage, and be reliable. determine.

(2) The seal must have a certain service life. In order to ensure continuous production and reduce costs, seals must have a certain service life, and the general service life should be at least one production cycle (more than one year).

(3) Corrosion resistance. Most of the petrochemical and chemical production are corrosive media. Corrosion will reduce the service life and reduce the processing accuracy and sealing performance of the seal surface. Therefore, the seal must be resistant to the corrosion of the medium.

(4) Easy to install and adjust. This is even more important in terms of the current technical level of maintenance personnel in the enterprise. Sometimes, maintenance personnel are not familiar with the new technology and fail to achieve the expected results.

(5) Variety of seals makes it easy to choose. In order to meet the various requirements of industrial production for sealing, there should be a combined sealing structure with multiple structures, multiple materials, or multiple sealing combinations.

(6) The price is cheap. Any seal can be easily promoted and applied in production at a low price. Since most of the sealing parts are vulnerable parts, it should be ensured that they are interchangeable to realize the generalization, standardization and serialization of parts.

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Mechanical seals are based on the functional definition of 　　 higher standards of mechanical seal technology