Research Of Steam-injection Boiler Outlet Refrigerant Dryness Detection

The stream which is poured into the oil wells during heavy oil production is wet stream. The dryness of wet stream is a key point in the production.In order to insure the security of the stream-iniection boiler and the effect of oil production,it is necessary to measure dryness quickly and exactly,and it is also a hot topic in two phrases Current of Vapour-Liquid research domain.The thesis introduces the basic knowledge of stream dryness measurement,for the prevalent problems which exist in most domestic and foreign dryness measurement methods; a new wet steam density measurement device based on differential pressure is brought forward. The device concludes feedwater flow measurement instruments, water pressure measurement instruments, water temperature measurement instruments, steam-injection boiler outlet refrigerant pressure measurement instruments, temperature measuring instruments, constant high container, vertical measurement pipe section, differential pressure transmitter, temperature measurement components embedded in a a metal wall of constant high container and pressure tube and supporting the temperature transmitter (pressure transmitter) and a signal processing system IPC. By measuring the differential pressure value on the vertical pipe of differential pressure transmitter reflects wet steam density values, the wet steam density, temperature, pressure can be calculated wet steam dryness value. Calculate wet steam dryness value by the wet steam density, temperature, pressure.Analysis of the experimental data results that the device can effectively real-time online measures wet steam dryness of the steam-injection boiler outlet. It is practical.