Pipeline pressure control system
Patent
·
OSTI ID:6572759
This paper describes a pressure control system that responds to pressure surges in a pipeline by changing the pipeline pressure in the direction opposite the pressure surge. It comprises: a pipeline; a valve coupled to the pipeline for varying the flow of fluid through the pipeline; a suction pressure sensor coupled to the pipeline upstream of the valve for sensing the suction pressure of the fluid within the pipeline; a discharge pressure sensor coupled to the pipeline down-stream of the valve for sensing the discharge pressure of the fluid within the pipeline; a suction controller coupled to the suction pressure sensor, the suction controller comparing the suction pressure sensed by the suction pressure sensor with a first predetermined pressure setpoint to determine when the suction pressure is lower than the first pressure setpoint by more than a first predetermined amount of at least approximately five psi; and a discharge controller coupled to the discharge pressure sensor. The discharge controller compares the discharge pressure sensed by the discharge pressure sensor with a second predetermined pressure setpoint to determine when the discharge pressure exceeds the second pressure setpoint by more than a second predetermined amount of at least approximately five psi, the valve being moved to a predetermined position in response to either the suction controller determining that the suction pressure is lower than the first pressure setpoint by more than the first predetermined amount or the discharge controller determining that the discharge pressure exceeds the second pressure setpoint by more than the second predetermined amount.
- Assignee:
- Fisher Controls International, Inc., Clayton, MI (USA)
- Patent Number(s):
- A; US 4934399
- Application Number:
- PPN: US s 7-343152
- OSTI ID:
- 6572759
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
EQUIPMENT
FLOW REGULATORS
MEASURING INSTRUMENTS
PIPELINES
PRESSURE CONTROL
PRESSURE GAGES
PRESSURE MEASUREMENT
VALVES
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
EQUIPMENT
FLOW REGULATORS
MEASURING INSTRUMENTS
PIPELINES
PRESSURE CONTROL
PRESSURE GAGES
PRESSURE MEASUREMENT
VALVES