Device for measuring radial force of transient-state hydraulic power of centrifugal pump and measuring method thereof

Abstract

The invention provides a device for measuring radial force of transient-state hydraulic power of a centrifugal pump and a measuring method thereof, and discloses a measuring device. The measuring device comprises a shell 1, a back fixed ring 2, a compaction plate 3, a tight bearing 4, a shaft cavity 5, tight bearing elastic supports 6, an operation hole 7, loosened bearing elastic supports 8, a loosened bearing 9 and a front fixed ring 10, wherein outer rings of the tight bearing 4 and the loosened bearing 9 are connected and fixed with the shell 1 of the device by four elastic supports 6 and 8 respectively; the elastic supports are distributed at intervals of 90 degrees; a longitudinal strain plate and a transverse strain plate are respectively arranged on each side; for calibration, an object of which the mass is known is placed at the front end of a pump shaft, output signals of a circuit are amplified, acquired and output in a combined mode, and data of the device in each direction are recorded. The mass of the object arranged at the front end of the pump shaft is changed and is measured for many times by using the same method, so that the calibration of the device and the conversion of a measuring value are realized.

Description

technical field [0001] The invention provides a measuring device and method for measuring the transient hydraulic radial force acting on the impeller rotor caused by the unsteady flow inside the centrifugal pump, which belongs to the transient hydraulic radial force and its induced vibration inside the pump machinery related technical fields. Background technique [0002] Pumps are important energy conversion devices and fluid delivery equipment, among which centrifugal pumps are the most widely used. Centrifugal pumps are not only used in industrial and agricultural fields such as petroleum, chemical industry, and water conservancy, but also are key equipment in high-tech fields such as aviation, ships, and submarines. Centrifugal pumps will inevitably generate vibration during operation, which will affect the stability and safety of centrifugal pump operation and affect the life of the machine. The pump is the key equipment of major projects. Reducing vibration as much a...

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Problems solved by technology

At present, in these patents, there is no measuring device for the instantaneous radial force of the centrifugal pump impeller rotor in the rotating state, there is no measuring device suitable for the installation of the ordinary centrifugal pump bearing seat structure, and there is no perfect rotating coordinate system for the accurate radial force of the pump impeller. Methods of Measurement and Conversion

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