High-precision shock-proof pressure gauge

• Main Authors: XU XUFENG, ZHAO JIAN, ZHANG WEI, ZHANG JIUWANG
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The utility model discloses a high-precision shock-proof pressure gauge and belongs to the technical field of pressure gauges. The pressure gauge comprises a movement assembly, a gauge shell and a sector-shaped pressure balance capsule. The pressure balance capsule is internally provided with a sealing cavity. The external surfaces of the upper and low ends of the gauge shell are provided with external threads. The upper end of the gauge shell is in threaded connection with a shroud ring. A threaded sleeve at the lower end of the gauge shell is used for locking and fixing equipment during the installation process of the pressure gauge with the equipment. The bottom of a joint is provided with a large air inlet hole. The air inlet hole is internally provided with an expansion tube. A damper is arranged at the upper part of the expansion tube. According to the technical scheme of the utility model, the pressure balance capsule is arranged inside the gauge shell, and the pressure difference between the interior and the exterior of the gauge shell under the influence of the ambient temperature can be automatically balanced. Therefore, the measurement accuracy of the pressure gauge is ensured. By means of the expansion tube in the air inlet hole, foreign matters in a to-be-detected medium are completely blocked from entering the Bourdon tube, so that the measurement accuracy of the Bourdon tube is ensured. The service life of the pressure gauge is greatly prolonged.