A Brief Analysis of vibrometer device detects an important role

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Enterprises to achieve modernization of equipment management, should be actively pursuing advanced device management methods and take the equipment maintenance equipment condition monitoring based technology. Equipment condition monitoring and fault diagn osis technology equipment preventive maintenance premise. Especially heavy industry enterprises, strong continuity and high safety and reliability requirements, through the promotion of condition monitoring can gradually master the working condition of the pumps, fans and other large and medium-sized equipment, to prevent accidents downtime.

A device management status

Before large and medium-sized equipment such as pumps, fans, minor repairs on the period of generally two types: run the table and the cumulative or regular maintenance. Based on the device actual operating hours and the actual operating conditions, to determine equipment repair cycle, cycle to poor health or equipment, notify maintenance personnel overhaul of equipment, some equipment is also based on many years of experience to determine the size of the repair cycle, water pump year for an overhaul cycle, the peak production period a year require more cooling water, all pumping systems o verhaul. Frequent fan operation, maintenance cycle as six months in order to improve the purification efficiency or assurance the electrolyzer of normal feed overhaul cycle is determined on an annual basis or when the press desk, too old. From traditional maintenance mode in order to come out, must rely on advanced scientific instruments as a means of detection.

Second, the vibrometer with

Qinghai Aluminum Company in device management agencies, according to the division of work between the different with different detection equipment, special equipment Department of Energy with the production of HG Jinghang a 3518-type instrument, data acquisition Fault Diagnosis System The measurement parameters for the acceleration, velocity, displacement, temperature, speed. Member of the branch point inspection, with the French production 4576DA multifunction portable vibration meter, measurement parameters for the acceleration, velocity, displacement, mainly used f or the random testing equipment running state. Master the basic parameters of the test and maintenance personnel with Jinghang production HG 2506 The Pocket vibrometer, applicable to low frequency (5Hz) measured under acceleration, velocity, displacement volume.roller ball bearings

Third, the vibrometer usage

In recent years, many companies in the equipment condition monitoring using pulse vibrometer oil quality analyzer, multi-channel timing and other instruments. The lack of standardized management and technical guidance, the instrument issued after the workshop, because different technical level, the performance of the instrument itself is unstable, the operation is not convenient to various reasons, so this work is difficult to carry out. However, after a period of exploration, the Aluminum Corporation of China branch to implement the equipment inspection, the introduction of many advanced instruments, the vibration detector is applied to the device status detection plays an important role in equipment preventive maintenance, prompting the Device Manager work to a new level.

Fourth, measurement methods and judgment based on

The choice of measurement points: the use of vibration measurement instrument, test bearings and axial endpoint of major equipment, and with on-site inspection records, each measuring point must correspond to each other.

2, measurement period: just after the overhaul of the equipment or close to overhaul, required two weeks test; measured once a month during normal operation should be strengthened; such as the case of the measured values ??with the last measured value, the test density to anti unforeseen downtime.thin wall bearings

3, based on the measured value judgment: the reference to the international standard ISO2372.

Speed: 600 ~ 1200r/min, the vibration measuring range: 10 ~~ 1000Hz.

Usually in the normal operation of the equipment, its detection speed value in the range of 4.5 ~ 11.2mm / s (75kW or more units) to monitor the use of more than 7.1mm / s, we must consider the arrangements overhaul. The determination of this value in addition to consider equipment motor capacity, but also consider the continuity, security and high reliability aspects.