FUNDAMENTAL PRINCIPLES OF PRESSURE （压力的基本原则）.pdfVIP

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FUNDAMENTAL PRINCIPLES OF PRESSURE （压力的基本原则）.pdf

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FUNDAMENTAL PRINCIPLES OF PRESSURE （压力的基本原则）

FUNDAMENTAL PRINCIPLES OF PRESSURE REGULATORS Presented by Kevin Shaw Actaris Metering Systems 970 Hwy. 127 North, Owenton, Kentucky INTRODUCTION The following paper will concentrate on the fundamentals and principles of natural gas pressure regulators. In the Loading gas regulator’s conception it was mainly a device used Element to reduce high pressure to a more usable lower pressure. Today, more is expected from the performance of the Sensing pressure regulator. Pressure reduction is no longer the only function needed. The regulator is considered an Element integral measurement instrument that must adhere to the stringent codes put forth by the U.S. Federal Department of Transportation and many state Public Utility Commissions. In order to understand the principles of pressure regulation this paper will focus on: I. OPERTION II. DROOP VS. BOOST III. CHANGING IN INLET PRESSURE VS. MECHANICAL ADVANTAGE IV. SAFETY MECHANISMS Restricting Element V. KEYS TO SELECTION FIGURE 1. VI. CONCLUSIONS 1. Restricting Element — A restriction which allows REGULATOR CLASSIFICATIONS gas to flow through the regulator at a reduced