Mechanical seal system configuration |
Shaft sealing
Past costumes shaft sealing mechanical seal is designed for soft packing gland. It is not suitable for containing the mechanical seal, not only the size is too small, the gap is too narrow, and simple cylindrical shape is not appropriate.
At present, foreign countries have been developed to increase the size of the mechanical seal shaft sealing standards. Besides the United States _ Abdullah and British secret Tai Lieke fluid dynamics research group are studying reasonable mechanical seal shaft sealing, its shape should not only be beneficial to the fluid flow and heat dissipate, but also should help to remove solid particles, to good sealing result surroundings.
Controlling the amount of volatiles to escape
Note eliminate fluid leakage past only visible, invisible and not pay attention to the amount of volatiles escape control, thus causing environmental pollution and dangerous devices and personal. Sealing Technical Committee abroad such as the American Society of Lubrication Engineers friction formulation of the SP-30 (1994), SP-32 (1990) and SP-33 (1991) with mechanical seal rotating control machinery, compressors and screw system is easy the amount of escaping volatile regulatory guidelines. SP-30 is divided into three phases. Which explicitly states that the definition of blocking fluid and buffer fluid clarification error, the concept of confusion. Blocking the introduction of complete obstruction of the fluid between the two-fluid sealing process fluid from leaking to the surroundings. Always higher than the pressure of the fluid and the process fluid pressure to be sealed. Buffer fluid is used as a lubricant or a double seal between the buffer fluid, the buffer fluid pressure is always lower than the pressure of the sealed process fluid.
Supporting auxiliary systems
Mechanical seal auxiliary cooling system, heating, washing and other systems need support, need to optimize circulation pump, condition monitoring systems and other issues are being studied and solved. In the API-682 standards set forth in the related auxiliary systems.
Gas block sealing system
Sealing systems commonly used in the past liquid blocking blocking blocking liquid or liquid gas is now blocked in order to simplify the huge liquid system, instead blocking gas liquid or gas block to block sealing system can spiral groove gas seal and blocking gas, floating sleeve and blocking gas blocking gases and liquids and the like.
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