Verifying device and method for online sulfur hexafluoride hygrometer

A calibration device, sulfur hexafluoride technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to ensure the consistency of sensors and measurement accuracy, so as to overcome the change of standard gas humidity and facilitate the adjustment of standards Humidity, the effect of improving reliability

Active Publication Date: 2011-08-31
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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Problems solved by technology

However, the comparison and calibration of sulfur hexafluoride humidity sensors widely used in substations and lines are carried out under normal pressure, which cannot guarantee the measurement accuracy under workin

Method used

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  • Verifying device and method for online sulfur hexafluoride hygrometer
  • Verifying device and method for online sulfur hexafluoride hygrometer

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Embodiment Construction

[0042] figure 1 Shown is a sulfur hexafluoride online humidity meter calibration device, the gas storage tank 1 is connected to the calibration chamber 3 through the gas outlet pipeline, the gas outlet pipeline is provided with a calibration inlet valve 5, and the calibration chamber is connected to the circulation pump through the pipeline The warehouse 4 is connected, and the exhaust pipe of the circulating pump chamber is provided with a contact valve 7, an exhaust valve 8 and an exhaust flow meter 14 in sequence. The outlet pipe of the circulating pump chamber is connected with the air storage tank 1, and the outlet pipe is provided with The outlet valve 6 and the diaphragm pump 13 are arranged in the circulation pump chamber 4, the circulation pressure gauge 11 is provided on the circulation pump chamber 4, and the interface 12 for connecting the humidity sensor to be calibrated is provided on the calibration chamber 3; A pressure gauge 15 is provided, an air intake pipe ...

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Abstract

The invention discloses a verifying device and method for an online sulfur hexafluoride hygrometer. An air tank is connected with a verifying cabin through an air outlet pipeline; the air outlet pipeline is provided with a verifying inlet valve; the verifying cabin is connected with a circulating pump cabin through a pipeline; an exhaust pipeline of the circulating pump cabin is provided with a connecting valve, an exhaust valve and an exhaust flow meter in sequence; an outlet pipeline of the circulating pump cabin is connected with the air tank and is provided with an outlet valve; a diaphragm pump is arranged in the circulating pump cabin; the circulating pump cabin is provided with a circulating pressure gauge; the verifying cabin is provided with an interface for connecting a verifiedhumidity sensor; the air tank is provided with a pressure gauge and an air inlet pipe; the air inlet pipe is provided with an air inlet valve; a vacuum pump is connected with the air tank through a vacuumizing pipeline; and the vacuumizing pipeline is provided with a vacuum pump air inlet valve. By adopting the device, the online sulfur hexafluoride hygrometer can be compared and measured under the conditions of different gas pressures and different temperatures, and the accuracy of the online hygrometer can be remarkably enhanced.

Description

technical field [0001] The invention relates to a calibrating device for hygrometer detection, in particular to a calibrating device for an online sulfur hexafluoride hygrometer. Background technique [0002] Sulfur hexafluoride is an insulating gas and arc extinguishing gas in high-voltage electrical equipment. The humidity of sulfur hexafluoride gas directly affects its insulation performance. On-line accurate measurement of sulfur hexafluoride gas humidity plays a vital role in ensuring the safety of inflatable electrical equipment. However, the comparison and calibration of sulfur hexafluoride humidity sensors widely used in substations and lines are all carried out under normal pressure, which cannot guarantee the measurement accuracy under working conditions. At the same time, due to the structure of the humidity measuring device, it cannot be guaranteed that the gas detected by the sensor is consistent with the standard gas during comparison and calibration. Conte...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0006
Inventor 唐平苏长华王锴胡仕红王杰
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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