辅助密封

采用整体接触有限单元法，考虑“O”型辅助密封圈的影响，计算了不同压力下机械密封端面变形行为。

To study the influence of O-rings secondary seals , deformation behaviors of mechanical seal faces were analyzed under different pressures with the method of integral contact analysis by FEM .

滑移式机械密封的动态辅助密封圈性能研究

Study on the Dynamic Auxiliary Seal Ring of Pusher Type Mechanical Seal

内装式、单端面、单弹簧、平衡型，动环辅助密封采用U形密封圈，密封可靠，适合高压石油化工流程泵。

With built-in type , single seal face and single spring , U-ring is used for rotating ring auxiliary seal , high reliable seal , fitting for high-pressure petrochemical process pump .

椎环、弹簧、弹簧座以及卡环，辅助密封圈有“O”形橡胶圈和PTFE楔形环，静环材料都为石墨（M106K）。

Vertebral ring , spring , spring seat and clasp , auxiliary seals have " O " shaped rubber ring and PTFE wedge ring , quiet ring for graphite materials ( M106K ) .

中国石化扬子石化股份公司烯烃厂2丁二烯装置使用某厂生产的44台ZE型离心泵，其机械密封使用寿命短，机封的小弹簧及辅助密封环在选材上存在一些问题。

During the operation of 44 sets of ZE type centrifugal pump in butadiene unit in Yangzi Petrol-chemical Company , there are some problems such as short operation life of mechanical seal and unsuitable seal material , etc.

温度t在0～80℃范围内，辅助密封圈通常选用丁腈橡胶O形密封圈；

Temperature tin the range of0 ~ 80 ℃, the auxiliary ring is usually chosen NBR O-ring ;

对金属辅助密封结构，有效地控制阀门的内漏和外漏。

To metal seal is provided to effectively prevent both internal and external leakage of the valve .

本次改造新设计了楔形环作为辅助密封圈的整体式补偿环，取得了良好的效果。

Thus , one wedge ring was designed to be as the integrity compensation ring , which had good effect in eliminating the leakage .

螺纹接头的密封性主要取决于螺纹的加工参数，但螺纹脂对螺纹接头的辅助密封作用不应被忽略。

The sea1ing ability of API connections mainly depends on the machining parameters of connections themselves , but the sealing aid of thread compound can not be overlooked .

文章从改进密封结构的角度提出了带有端面辅助密封结构的刀口机械密封装置结构设计的基本思路。

This paper put forward the fundamental idea of design of blade mechanical seal with the structure of end assisting seal from the angle of improving the seal structure .

这三套机械密封都由如下部件组成：动环、静环、推环、弹簧、弹簧座、辅助密封圈、卡环等。

The three sets of mechanical seal components are as follows : actin ring , quiet ring , push the ring , spring , spring seat , auxiliary ring , ring , such as cards .

结合某中压热氨泵的机械密封改造，对金属波纹管机械密封与普通机械密封的性能对比进行了分析，指出金属波纹管机械密封可以在很多工况下取代使用，辅助密封圈的普通机械密封。

Some improvements for mechanical seals on mid-pressure ammonia pumps in our plant is summarized , A performance contrast is analysed and some application recommendations are given in future service preferentially for the metal bellow type mechanical seals .

如果大气压力作用产生的轴向力大于弹簧力会使摩擦副产生轴向位移，造成静环辅助密封圈脱离环座，诱发密封失效。

If the axial force generated by atmosphere pressure is bigger than spring force , the friction pair will move along the axis , which will make the assistant seal loop of rest ring leave away from ring seat and the mechanical seal fails .

建立了滑移式机械密封装置上动态辅助橡胶密封圈的有限元模型；

The finite element model of rubber dynamic auxiliary seal ring which was installed on the pusher type mechanical seal was established .