Table of Contents
What is temperature control valve?
Temperature control valves are used to control fluid temperatures in turbines, compressors, and engine jacket water and lubrication oil cooling systems. Valves used in industrial applications most commonly are defined by the number of ports they have.
What type of oil is used for turbine steam control valves?
Turbine lubricating oil has been used for many years as the hydraulic fluid for governor steam valve actuation. Lub- ricating oil is readily available and does not require a sep- arate pumping system nor a separate purifying system, when used as a control fluid.
What is the outlet temperature of lube oil?
5 ) Lubrication Oil Coolers The operating lube oil temperature at engine inlet is between 45oC. If it reaches or goes beyond 60oC; an alarm will come and the engine will slow or shut down based on the lubricant temperature. Thus to maintain lubricant temperature at 45oC; lube oil coolers are installed in the system.
How does a control valve work?
Control valves automatically regulate pressure and/or flow rate, and are available for any pressure. The valve modulates flow through movement of a valve plug in relation to the port(s) located within the valve body. The valve plug is attached to a valve stem, which, in turn, is connected to the actuator.
How does a temperature regulator work?
The controller takes an input from a temperature sensor and has an output that is connected to a control element such as a heater or fan. It compares the actual temperature to the desired control temperature, or setpoint, and provides an output to a control element.
Why are valves important in process control?
Additionally, process control valves are important because they guarantee stability in any given application. The valves control pressure, flow and temperature; these things must be controlled in order to make processes continue for a long period of time without failure or risks.