文档介绍：分析辅助密封装置的安装技术要求
1 机械密封的原理及要求
1 the principle of mechanical seal and requirements
机械密封又叫端面密封,它是一种旋转机械的轴封装置,指由至少一对垂直于旋转轴线的的端面在液体压力和补偿机构弹力(或磁力)的作用以及辅助密封的配合下保持贴合并相对滑动而构成的防止流体泄漏的装置。它的主要功用将易泄漏的轴向密封改变为较难泄漏的端面密封。它广泛应用于泵、釜、压缩机及其他类似设备的旋转轴的密封。
Mechanical sealing and end face sealing, it is a kind of rotating machine shaft sealing device, to point to by at least a pair of perpendicular to the axis of the rotating end surface in liquid pressure and tension (or ic force) the role pensation institutions and cooperation with auxiliary seal to keep the relative sliding post merger and constitutes a device to prevent fluid leakage. The major function of the it will be easy to leak the axial seal change difficult for end face seal leakage. It is widely
used in pump, reactor, compressor and other similar equipment of rotation of the seal.
机械密封通常由动环、静环、压紧元件和密封元件组成。其中动环随泵轴一起旋转,动环和静环紧密贴合组成密封面,以防止介质泄漏。动环靠密封室中液体的压力使其端面压紧在静环端面上,并在两环端面上产生适当的比压和保持一层极薄的液体膜而达到密封的目的。压紧元件产生压力,可使泵在不运转状态下,也保持端面贴合,保证密封介质不外漏,并防止杂质进入密封端面。密封元件起密封动环与轴的间隙、静环与压盖的间隙的作用,同时弹性元件对泵的振动、冲击起缓冲作用。机械密封在实际运行中是与泵的其它零部件一起组合起来运行的,机械密封的正常运行与它的自身性能、外部条件都有很大的关系。但是我们要首先保证自身的零件性能、辅助密封装置和安装的技术要求,使机械密封发挥它应有的作用。
Mechanical seals are usually made of ring and static ring, ponents and ponents. Pump shaft rotation, together with the ring ring and static ring sealing surface fit closely, in order to prevent the leakage of medium. Ring on the seal chamber fluid pressure makes it face pressure on the static ring end face, and generate the appropriate pressure on two ring end face and keep a very thin layer of liquid membrane and achieve the purpose of sealing. ponents generate pressure, can make the pump in operation state, also keep face and laminating, ensure sealing medium where it, and to prevent debris from getting into the seals. Packing element within the clearance between the axis and seal ring and static ring and the gland of the gap, and the elastic element of pump vibration, impact buffer role. Mechanical seal in the actual operat