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1、http:/ http:/ English performance of mechanical seal and new technology transformation in Translation关键词：机械密封；性能；注意事项；先进密封技术Keywords: mechanical seal; performance; note; advanced seal technology摘要：论文分析机械密封工作的基本原理，并且探讨在各个环节中怎样提高机械密封的性能和注意事项，简要介绍几种先进密封技术。Abstract: the basic principle of mechanical sea
2、l work, and discuss how to improve the performance of the various links in the mechanical seal and the matters needing attention, this paper briefly introduces some advanced seal technology.由于传动轴贯穿在设备内外，这样轴与设备之间存在一个圆周间隙，设备中的介质通过该间隙向外泄露，如果设备内压力低于大气压，则空气向设备内泄露，因此必须有一个阻止泄露的轴封装置。轴封的种类很多，由于机械密封具有泄漏量少和寿命长
3、等优点，所以是当今世界上最主要的轴密封方式。As the driving shaft through the inside and outside of the equipment, a circumferential gap exists between this axis and the equipment, equipment of medium leak out through the gap, if the equipment inside the pressure below atmospheric pressure, air leakage to the equipment, s
4、o there must be a to prevent leakage of the seal device. Many seal species, due to mechanical seal has the advantages of small amount of leakage and long life, it is one of the worlds most main shaft seal.机械密封主要是通过一系列零件将径向密封转化为轴向密封，在弹簧和介质压力共同作用下，对由于设备运行所造成的轴向磨损可以及时补偿，使轴向密封始终保持贴合。其密封性能和使用寿命取决于许多因素，如选
5、型、机器的精度以及在安装、启动前、运行和停运后的维护操作等【1】 。Mechanical seal is mainly the radial seal into axial sealing through a series of parts, interaction of the spring and the medium pressure, due to the axial caused equipment running wear can timely compensation, the axial seal always. The sealing performance and serv
6、ice life depends on many factors, such as selection, the precision of the machine and the installation, before the start, operation and outage maintenance operations such as 1 .http:/ http:/ 选型1 Selection机械密封按工作条件和介质性质的不同，有耐高温、耐低温机械密封，耐颗粒介质机械密封和适应易汽化的轻质烃介质的机械密封等，应根据不同的用处选取不同结构型式和材料的机械密封。在安装与使用中要根据机械
7、密封的要求选择机器的精度，按转轴的旋向来选择弹簧的左、右旋。Mechanical seal according to the working conditions and the medium properties are different, high temperature resistance, low temperature resistance of mechanical seals, mechanical light hydrocarbon resistance of granules medium mechanical seal and adapt to easy vaporiz
8、ation of the seals, should be based on the mechanical different use different structure and materials of sealing. To select the machine according to the requirements of the accuracy of mechanical seal in installation and use, according to the rotation shaft always choose the left and right, spring.2
9、. 安装【2】2 installation 2 安装方法随机械密封型式、机器的种类不同而有所不同，但其安装要领几乎都相同，安装步骤和注意事项如下：Types of installation method with mechanical seal, the machine will be different, but the installation are almost the same, installation procedures and precautions are as follows:2.1 安装尺寸的正确确定。2.1 installation size determine th
10、e correct.2.2 装入前，轴（轴套） 、压盖应无毛刺，轴承状况良好；密封件、轴、密封腔、压盖都应该清洗干净。为减少摩擦阻力，轴上安装机械密封的部位要薄薄地涂上一层油，以进行润滑，考虑到橡胶 O 形圈的相溶性，若不宜用油，可涂肥皂水。浮装式静环不带防转销的结构，不宜涂油，应干式装入压盖。2.2 into the front, shaft ( sleeve ), gland should be free of burrs, bearing in good condition; seals, shaft seal chamber, capping should be cleaned. To
11、 reduce friction, shaft mechanical seal parts to be coated with a thin layer of oil, to lubricate, considering the compatibility of rubber O ring, should not be oil, can be coated with soap and water. Floating type static ring without a stop pin structure, not oil, should be dry in the gland.2.3 先将静
12、环与压盖一起装在轴上，注意不要与轴相碰，然后将动环组件装入。弹簧座或http:/ http:/ the static ring and the cover is mounted on the shaft and the shaft, careful not to touch, and then the moving ring assembly load. The spring seat or the driving seat screws should be divided into several evenly tightened.3. 启动前的准备工作及注意事项 Preparation w
13、ork before the start of the 3 and the matters needing attention3.1 全面检查机械密封，机械密封启动前进行静压试验，检查是否有泄漏现象。3.1 comprehensive inspection of mechanical seal, mechanical seal before the start of the hydrostatic test, check whether there is leakage phenomenon.3.2 启动前应保持密封腔内充满液体。对于输送凝固的介质时，应用蒸气将密封腔加热使介质熔化按泵旋向盘车
14、，检查是否轻快均匀。如盘车吃力或不动时，则应检查装配尺寸是否错误，安装是否合理。3.2 before the start should be kept sealed cavity filled with liquid. To deliver solidified medium, application of steam seal cavity heated to melting according to medium pump rotary turning, check whether a uniform. Such as the disk hard or not, it should che
15、ck whether the assembly dimension error, installation is reasonable.4. 运行中的维护4 run in maintenance4.1 当输送介质温度偏高、过低、或含有杂质颗粒、易燃、易爆、有毒时，必须采取相应的阻封、冲洗、冷却、过滤等措施。4.1 when the transmission medium temperature too high, too low, or contain the impurity particles, flammable, explosive, toxic, must take the corr
16、esponding sealing, flushing, cooling, filtering and other measures.4.2 运转前用手盘车，注意转矩是否过大，有无擦碰及不正常的声音。4.2 before the operation of hand turning, pay attention to the torque is too large, there is no eraser brush up against abnormal sound.4.3 注意旋向，联轴器是否对中，轴承部位的润滑油加法是否适当，配管是否正确。4.3 pay attention to whether the rotati
