Calibration device and method for a flow wet steam humidity probe
A technology of flowing wet steam and calibrating device, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of affecting the calibration of flowing wet steam humidity probes, affecting the accurate measurement of wet steam humidity, and increasing the difficulty of heat dissipation, etc. Achieve the effect of reducing heat loss, reducing data processing, and achieving accuracy
Inactive Publication Date: 2016-08-17
XI AN JIAOTONG UNIV
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Problems solved by technology
The calibration device uses a standard flow nozzle to measure the flow, which has higher accuracy than the method using a flowmeter. However, in actual operation, the measurement of the pressure difference between the front and rear of the nozzle is the main source of the wet steam flow error; in addition , the large-scale design of the device increases the heat loss, thus increasing the difficulty of accurately calculating the heat dissipation, thus affecting the accurate measurement of the humidity of the wet steam, and thus affecting the calibration of the humidity probe of the flowing wet steam
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[0036] The present invention is described in further detail below in conjunction with accompanying drawing:
[0037] refer to figure 1 , figure 2 and image 3, the flow wet steam humidity probe calibration device of the present invention includes a data acquisition system, a controller, a water tank 8, a steam generator 1, a humidity control section 13, a humidity probe connection section 14, an overheating section 15, and a uniform mixing section 22 , condenser 19, container 24, heat exchange tube 10, some heat exchange tubes 10, and the weighing device 5 for weighing container 24 quality; The outlet of water tank 8 and the entrance of steam generator 1 and each heat exchange tube 10 The inlet of the steam generator 1 is connected to the inlet of the humidity control section 13, the outlet of the humidity control section 13 is connected to the inlet of the humidity probe connection section 14, and the outlet of the humidity probe connection section 14 is connected to the s...
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The invention discloses a flow wet steam humidity probe calibration device and a method. The device includes a data acquisition system, a controller, a water tank, a steam generator, a humidity regulating section, a humidity probe connecting section, an overheating section, a uniform mixing section, a condenser, a container, a plurality of heat exchange pipes and a weighing device for weighing the mass of the container. The flow wet steam humidity probe calibration device and the method can be used for calibrating a flow wet steam humidity probe with high precision.
Description
technical field [0001] The invention relates to a calibration device and method, in particular to a flow wet steam humidity probe calibration device and method. Background technique [0002] At present, many literatures disclose several principles of wet steam humidity probes, but there are few devices capable of accurately calibrating the wet steam humidity probes. In order to calibrate the humidity probe, the calibration device must generate flowing wet steam with known humidity, so the humidity of the wet steam needs to be accurately measured by thermal method. The currently published humidity probe calibration devices fail to give accurate results for the measurement of wet steam humidity, and the errors mainly exist in the measurement of wet steam flow and the calculation of heat dissipation. Chinese patent ZL02210915.3 discloses a "Flowing Wet Steam Humidity Measurement Probe Calibration Device", which is mainly composed of a steam generator, a humidity measurement pr...
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IPC IPC(8): G01N33/00
Inventor 李亮吴昕
Owner XI AN JIAOTONG UNIV