PROPORTIONAL SPEED FLOATING SYSTEMS IMPROVES LIQUID PIPE LINE CONTROL

The jet pipe principle is illustrated, and its application to move the piston of a control valve is described. The jet pipe swings in response to the magnitude of the controlled variable, causing the speed of correction to be directly proportional to the amount of the error. The control is "floating" because there is no fixed relationship between the value of the controlled variable and the position of the final control element. It is possible for the control valve to operate in a wide open position until a pressure limit is exceeded, and then to throttle the flow to restore the pressure to the preset limit.

• Supplemental Notes:
  • Presented at ASME Petroleum Mechanical Engineering Conference, Tulsa, Okla., Sept. 21-25, 1969.
• Corporate Authors:

  Gulf Publishing Company

  Box 2608
  Houston, TX  United States  77001
• Authors:
  • Wilson, D M
• Publication Date: 1969-12

Media Info

• Pagination: p. 50-52
• Serial:
  • PIPE LINE INDUSTRY
  • Volume: 31
  • Issue Number: 6

Subject/Index Terms

• TRT Terms: Communication and control; Machine valves; Pipelines
• Old TRIS Terms: Pipeline communications and control
• Subject Areas: Freight Transportation; Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00056098
• Record Type: Publication
• Source Agency: American Petroleum Institute
• Files: TRIS
• Created Date: Jul 15 1974 12:00AM