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Reed valves’ impact velocity measurements on working compressors.

Number: 1220

Author(s) : MARTINS P.

Summary

This work proposes a suitable way for measuring the impact velocity of reed valves used in suction ports of reciprocating compressors. We introduce a simple handcrafted inductive sensor, made by a permanent magnet, a metallic stem of circular cross-section and copper wire. Then, the procedure for compressor’s instrumentation is detailed, and a method to calibrate the recorded signal from the sensor is presented. Due to some complexity on its calibration, a special attention was given to this regard. The calibration process was analyzed statistically, and results are presented. In the calibration process we recorded 1.25 seconds, which properly detected around 62 cycles for a compressor operating at 3000 RPM. The same parameters were used for 3 different valve plates. Then, the signal was postprocessed and calibration values were compared. Finally, actual measurements were performed with the compressor connected to a refrigerant system, running under a given condition. Data from its valve velocities are presented and discussed.

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Pages: 8 p.

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Details

  • Original title: Reed valves’ impact velocity measurements on working compressors.
  • Record ID : 30030289
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Publication date: 2022/07/15

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