必需废除所有国际密封基础标准

It Is Necessary to Abrogate All the International Basic Standards of Seals

按照国际标准JCGM 200定义,物理量是现象、物体或物质的可量化属性,可以分为基本量和导出量两种;基本量是不可用其它量表达的量,导出量是可用其系统基本量定义的量;系统内的基本量和导出量可以通过定律及其方程进行相关联。在国际单位制中,密封紧密度即漏阻是由密封或泄漏定律确立的导出量,是恒压状态下压力容器或系统穿过密封节漏出单位容积流体所耗的时间t与压力p之乘积,绝不是现有国际标准中所谓的泄漏率之倒数。管道内流路、物体外流路和泄漏流路的差异仅在于它们的流(漏)阻和流抗不同。在不知流(漏)阻和流抗量之前不可能知道如何辨别和控制流路。国际密封基础标准是在不知何为漏阻(紧密度)、何为合格密封和如何设计、安装及验收密封的条件下制定的,不可能靠其对压力容器或者系统泄漏提供任何有效的控制,必需尽快废止。

According to the definitions in the international standard JCGM 200,physical quantities are the quantifiable properties of phenomenon,object,or material,which could be classified into two– basic quantity and export quantity.Basic quantity cannot be the one expressed by using other quantity,and the export quantity is the one defined by using the basic quantity in its system,and the basic quantity and export quantity in its system are correlated with through law and its equation.In unit on international system,the sealing tightness,the leakage resistance,is the exported quantity established by sealing or leakage,and is the product of time t and pressure p,the time which is consumed by the leaked unit volume fluid in pressure vessel under constant pressure or in the system through sealed joint.Absolutely,it is not the reciprocal of＂leakage rate＂fabricated in existing international standard.The difference of inner pipe flow routing,the external object flow routing and leakage flow routing is only their flow（leakage）resistance and reactance.It is hardly to make difference and control flow routing before the leakage resistance and reactance unknown.The international sealing basic standard has been set up under the condition of the leakage resistance（tightness）and qualified sealing unknown,and thence how to design,install and acceptance inspection of sealing.So,the basic standard cannot be relied upon to provide efficient control of pressure or system leakage.It is the must to abrogate it in a quick action.