Method and device for measuring push-pull force of valve rod of electrically operated valve based on strain gauge

• Main Authors: HE PAN, ZHENG LANJIANG, ZENG JIE, LIU CAIXUE, YAN XIAO, YANG TAIBO
• Format: Patent
• Language: Chinese; English
• Published: 29.11.2022
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The invention discloses a method and a device for measuring push-pull force of a valve rod of an electrically operated valve based on strain gauges, and relates to the technical field of valve measurement, and the key points of the technical scheme are as follows: at least one strain gauge is arranged on the surface of the valve rod which is always exposed in the whole-stroke operation process of the valve; and the push-pull force of the valve rod is determined by combining the telescopic dependent variable measured by the strain gauge and the structural parameters of the valve rod. The strain gauge is pasted on the surface of the valve rod which is exposed all the time, the structure is simple, no extra anti-radiation measure needs to be arranged in the nuclear power station application, thrust or tension borne by the valve rod can be measured in real time, the stress condition of the valve rod can be checked in real time, and due to the fact that the strain gauge is pasted at a time and can be used for a lo