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2 results about "Thermowell" patented technology
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Thermowells are cylindrical fittings used to protect temperature sensors installed in industrial processes. A thermowell consists of a tube closed at one end and mounted in the process stream. A temperature sensor such as a thermometer, thermocouple or resistance temperature detector is inserted in the open end of the tube, which is usually in the open air outside the process piping or vessel and any thermal insulation. Thermodynamically, the process fluid transfers heat to the thermowell wall, which in turn transfers heat to the sensor. Since more mass is present with a sensor-well assembly than with a probe directly immersed into the process, the sensor's response to process temperature changes is slowed by the addition of the well. If the sensor fails, it can be easily replaced without draining the vessel or piping. Since the mass of the thermowell must be heated to the process temperature, and since the walls of the thermowell conduct heat out of the process, sensor accuracy and responsiveness is reduced by the addition of a thermowell.
High-power electric heater for heavy oil development
ActiveCN224550089USteel jacketNickel chromium alloy
The utility model discloses a high -power electric heater for thick oil development, including stainless steel outer sleeve pipe, three heating cables and thermocouple sleeve pipe are sheathed in the stainless steel outer sleeve pipe, and thermocouple assembly is sheathed in the thermocouple sleeve pipe, and the end of stainless steel outer sleeve pipe is welded with sieve tube, and the end of sieve tube is connected with the pipe through the connecting ring away from stainless steel outer sleeve pipe, and the end of pipe is connected with the plug away from the connecting ring, and thermocouple sleeve pipe and three heating cables all pass sieve tube, connecting ring and pipe in proper order. The utility model heating part adopts stainless steel mineral insulation heating cable, and the heating is even, and the heating core wire adopts nickel chromium alloy, and the heat output is big, and the service life is long, and three stainless steel mineral insulation heating cable tail stars, and the electrical connection is convenient, and the electrical control system is simplified, and contains three thermocouples, can monitor the temperature change of three positions, adjusts voltage in time, guarantees that the heating temperature satisfies the requirement, and the heater tail has sieve tube, and the steam is convenient to flow out.
Owner:CNPC NATIONAL PETROLEUM ENGINEERING & TECHNOLOGY RESEARCH CENTER CO LTD +2
Thermowell for temperature sensor
The invention relates to the field of measuring technology and can be used in oil refining, power engineering, metallurgy and other branches of industry to prevent damage to temperature sensors when measuring the temperature of flowing liquid and gaseous media. A thermowell for a temperature sensor comprises a mounting part for attachment to an object, and an immersion part in the shape of a solid of revolution having a blind hole, said immersion part having flow modifying elements on the outer surface thereof, which are provided in the form of longitudinal ribs divided into sections, wherein the sections on adjacent ribs are offset from one another. The technical result is that of adapting a thermowell for use across a wider range of flow rates by more efficiently reducing vortex formation and oscillation amplitude.
Owner:OBSHCHESTVO S OGRANICHENNOJ OTVETABTVENNOSTJU PROIZVODSTVENNAJA KOMPANIJA TESEJ