It Is Necessary to Abrogate All the International Basic Standards of Seals
International Journal of Energy and Power Engineering
Volume 5, Issue 4-1, July 2016, Pages: 1-12
Received: Jun. 22, 2016;
Accepted: Jun. 25, 2016;
Published: Aug. 24, 2016
Views 3509 Downloads 56
Xu Changxiang, Baoyi Group Co. Ltd., Wenzhou, Zhejiang, 325105, China
Zhang Xiaozhong, Baoyi Group Co. Ltd., Wenzhou, Zhejiang, 325105, China
Chen Youjun, Baoyi Group Co. Ltd., Wenzhou, Zhejiang, 325105, China
Follow on us
According to definitions in the international standard JCGM 200, physical quantities, divided into base quantity and derived quantity, are a property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference (a measurement unit); a base quantity cannot be expressed in terms of the others, and a derived quantity can be defined in terms of the base quantities of its system; and these base and derived quantities are related to each other by some laws and their equations. In the International System of Quantities, tightness or leak resistance is a derived quantity defined by a sealing or leaking law, which is the product of pressure p and time t expended on leaking a unit cubage of fluid through the sealing joints of a pressure vessel or system at a constant pressure, but by no means the reciprocal of “leakage rate” fabricated by the international standards. Various fluid circuits in pipes, on objects and in joints differ only in their fluid (leak) resistance and reactance, and it is impossible to know how to identify and control a fluid circuit before knowing these physical quantities. All the international basic standards of seals should be abrogated as soon as possible because they were so enacted before knowing what the leak resistance (tightness) and the qualified seal are and how to design, install and inspect a seal that it is impossible to count on them providing any effective control of leakage for a pressure vessel or system.
Physical Quantity, Fluid Resistance, Leak Resistance (Tightness), Fluid Reactance, Seal, Fluid Circuit
To cite this article
It Is Necessary to Abrogate All the International Basic Standards of Seals, International Journal of Energy and Power Engineering. Special Issue: Xu’s Sealing and Flowing Theories of Fluids.
Vol. 5, No. 4-1,
2016, pp. 1-12.
Hydraulic analogy. The Free Encyclopedia, Wikipedia. https://en.wikipedia.org/wiki/Hydraulic_analogy.
Ohm's law. The Free Encyclopedia, Wikipedia. https://en.wikipedia.org/wiki/Ohm%27s_law#cite_ref-18
Hagen-Poiseuille equation. The Free Encyclopedia, Wikipedia. http://en.wikipedia.org/wiki/Hagen–Poiseuille_equation
Xu Changxiang, Zhang Xiaozhong, Chen Youjun. Pressure Energy, Resistance and Reactance in Fluid Leak and Flow [J]. Hydraulics Pneumatics & Seals, 2015, Volume 35 (9): 4-10.
Poiseuille’s Law. The Great Soviet Encyclopedia, 3rd Edition. http://encyclopedia2.thefreedictionary.com/Poiseuille's+law
ASTM WK10193 New Recommended Practice for Gasket Constants for Bolted Joint Design [S].
EN 13555 Flanges and Their Joints - Gasket Parameters and Test Procedures Relevant to the Design Rules for Gasketed Circular Flange Connections [S].
ASME B16.34 Valves−Flanged, Threaded, and Welded End [S]
ISO 5208 Industrial Valves - Pressure Testing of Metallic Valves [S].
ISO 19879 Metallic Tube Connections for Fluid Power and General Use - Test Methods for Hydraulic Fluid Power Connections [S].
Applications Engineering of Garlock. Gasket Constants for the Layman. Garlock’s Technical Bulletin, 2004.
Xu Changxiang. Xu’s Sealing Theory and Rectangular & O-Shaped Ring Seals [J]. Petro-Chemical Equipment, 2013, 42(2): 78-85.
ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, Mandatory Appendix 2 Rules for Bolted Flange Connections with Ring Type Gaskets [S].
ISO 3601–2008, Fluid Power System – O-rings [S].
MSS SP-120 Flexible Graphite Packing System for Rising Stem Steel Valves – Design Requirements [S].
MSS SP-132 Compression Packing Systems for Instrument Valves [S].
ISO 7-1–1994 Pipe Threads Where Pressure-Tight Joints Are Made on the Threads – Part 1: Dimensions, Tolerances and Designation [S].
ASME B1.20.1–2013 Pipe Threads, General Purpose [S].