Significance and function of strengthening equipment inspection in cement plant

All parts of mechanical equipment are rigidly connected, and the fault is conductive and spreading. If it is not found in time, it will easily lead to minor faults and major faults, and the primary fault will be derived into secondary faults. For example, pitting corrosion occurred in the raceway of the inner ring of the reducer bearing. It was found in the early stage that not only the maintenance cost was low, but also the cost loss caused by shutdown was low. In the later stage of failure, bearing pitting spread to the front and rear shafts, gears, power devices and actuators, resulting in maintenance costs that ordinary enterprises can not afford. Because the performance attenuation of mechanical equipment is a slowly changing process, when the performance is not good, it is often manifested as overshoot of state parameters, which will not cause sudden shutdown, which provides the possibility for state-based fault diagnosis technology.

Condition monitoring and fault diagnosis technology can monitor the operating parameters of equipment, analyze the current state of equipment, predict the remaining life of equipment, improve the accuracy of equipment maintenance by means of condition maintenance, and prevent excessive maintenance or insufficient maintenance. It is beneficial to improve the efficiency, quality, cost, service and environment of the production system [3].

(1) efficiency

Cement industry is a commodity manufacturing industry with low added value, so it is very important for enterprises to improve equipment efficiency. The three rates of equipment (intact rate, shutdown rate and failure rate) represent the stable operation time of equipment and are important indicators to measure the operation status.

(2) Quality

For process production, the equipment can't idle in the start-up stage and shutdown stage, and the products produced in this case are unstable. Monitoring and diagnosis technology can reduce downtime, stabilize equipment status and improve product quality.

(3) Cost

On-line monitoring system can keep the equipment running stably, improve the output rate and reduce the unit product cost. In addition, the early detection of equipment failure has the advantages of simple damaged parts, low replacement cost, short order cycle and less economic loss.

(4) service

For equipment suppliers, condition monitoring technology can predict the remaining life of equipment, which is helpful to spare parts production and after-sales service emergency plan.

(5) Environment

The Twelfth Five-Year Plan for Cement Industry clearly stipulates that the carbon dioxide emissions per unit of industrial added value will be reduced by 17%, the total nitrogen oxide emissions will be reduced by 10%, and the total sulfur dioxide emissions will be reduced by 8%. In the case of poor equipment operation, energy consumption and waste discharge far exceed the normal situation. Using condition monitoring technology can reduce the damage to the environment.