Transient liquid temperature contact type measuring device and method

Abstract

The invention discloses a transient liquid temperature contact type measuring device and method. The method comprises: a, the device comprises a transient liquid temperature measuring cup, a platinumresistor or thermocouple thermometer and a connecting rope. b, the measuring cup is composed of a funnel section, a measuring section, an overflow hole, an overflow cup, a vacuum heat insulation layerand a fixing lug; c, the measuring cup is made of stainless steel, and the height is H1; d, measuring the diameter phi 1 of the cup inlet and the included angle theta 1 between the funnel section contour and the horizontal plane; e, measuring the inner aperture phi 2, the outer diameter phi 3 and the length H2 of the section; f, determining the thickness H5 and the length H4 of the thermal insulation layer; g, the overflow holes are a plurality of semicircles arranged at the bottom of the measuring section, and the radius is R1; h, the height of the overflow cup is H3, and the diameter is phi4; i, the fixing lug is located on the funnel section, and the hole is circular; j, a measuring method: the temperature measuring device is fixed below the falling liquid; the liquid is collected bythe measuring cup, is contacted with the thermometer and then enters the overflow cup from the overflow hole; when the height of the liquid level exceeds H3, the liquid overflows and discharges outwards; and the measuring temperature is continuously recorded.

Description

technical field [0001] The invention belongs to the field of liquid temperature measurement, and in particular relates to a transient liquid temperature contact measurement device and a measurement method. Background technique [0002] Free-falling liquid temperature measurement has applications in many engineering fields, such as: using the pipeline water discharge valve to indirectly measure the temperature of the working fluid in the pipeline, and the temperature distribution measurement of the cooling tower water, etc. Taking a mechanical ventilation cooling tower group as an example, multiple cooling towers are arranged side by side, and the water return pools of each cooling tower are connected to each other. In order to study the thermal performance of a cooling tower unit, it is necessary to obtain accurate cooling tower water temperature, especially when it is necessary to analyze the detailed aerodynamic distribution of cooling tower fill, drift eliminator, sprinkl...

AI Technical Summary

Problems solved by technology

In practice, this method will cause the measured temperature to not accurately reflect the real-time value of the liquid temperature in the pipeline due to the volume of the bucket (or beaker) being too large or too small, and the flow rate control.

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