Four phenomena of out of control operation of industrial refrigeration! The equipment operator shoul

Refrigeration equipment accounts for a high proportion of assets in industrial production equipment. It is a very important industrial equipment. It is also an essential skill for equipment managers for the safe operation of refrigeration equipment.

During the operation of refrigeration equipment, there are also potential safety hazards. If it is not observed and handled in time, it will virtually increase the probability of refrigeration accidents and bring harm to industrial production! Bring personal injury to relevant personnel in the industry!

two hundred and twenty-two

The following is a small series of kaideli chiller, which analyzes six common faults of refrigeration equipment in industrial application, and summarizes and arranges the emergency safe operation skills of refrigeration equipment, which can be used as a reference for equipment management and maintenance personnel in the industry.

The first is blockage.

There are usually three forms of blockage, one is ice gambling, two is dirty blockage, and three is oil blockage.

Plugging refers to plugging pipes, holes, valves, special components of the system, etc. the common components of plugging include oil, ice, sundries, etc. Take ice as an example. If there is water in the system, the ice will block the orifice of the throttle valve. There are various reasons. The condition of water ice is that the system contains water, or the vacuum is not completely vacuumized during system maintenance, and the internal air contains water; Or fill with refrigerant containing water.

The common causes of oil blockage are deterioration of refrigerant oil, inconsistent brand with equipment, high freezing point, mixed use of refrigerator and so on; The dirty blockage is caused by sundries in the system, such as impurities with incomplete sewage discharge, residues of welded pipes, etc. Therefore, during the normal operation of refrigeration equipment, pay attention to the blockage phenomenon, judge the cause, and then deal with it.

The second is abnormal noise.

The refrigeration equipment operates normally, and the sound is a normal phenomenon. In case of abnormal and irregular abnormal noise, special attention should be paid. The negligence of the refrigeration equipment administrator once caused tens of thousands of compressors to make abnormal noise and burn out the bearing bush, which is difficult to repair and finally scrapped!

The causes of abnormal noise of compressor are: there are foreign matters in the rotor; Bearing wear and fracture; Loose moving connecting members; Oil pump failure and other reasons.

Corresponding measures can be taken for the abnormal sound of different parts. For example, check the compressor and filter, tighten the bolts and replace the corresponding parts.

The third is overpressure.

Overpressure refers to the phenomenon that the container of the refrigeration system bears too high pressure, such as ultra-high condensation pressure, increase of saturated steam pressure, leakage of refrigerant gas in closed space, etc.

The parts where overpressure occurs include condenser and evaporator. The pressure is higher than the specified value due to too much non condensable gas, too much liquid and too much lubricating oil.

In case of refrigerant leakage in the warehouse and plant where the refrigerant is stored and in the enclosed space, it is easy to form refrigerant accumulation, pose a threat to personal safety, and suffocation and poisoning occur.

In the previous article of cadley, it was mentioned that the unreasonable operation and maintenance of maintenance personnel caused the mixing accident of refrigerant and oxygen, resulting in the overpressure explosion accident in the compressor system, which is the most dangerous and should be avoided.

The fourth is overtemperature.

Low temperature is widely used in industry, especially in the fields of low-temperature refrigeration, chemical industry and new materials. Metals become brittle at low temperature and are prone to rupture, which poses a safety threat to container and equipment operators.

Similarly, low-temperature refrigerant will freeze, causing irreversible damage to pipelines, valves and containers. In 2020, an enterprise failed to add antifreeze in time, resulting in the freezing accident of cooling water, the freezing and expansion crack in the pipeline, and the equipment compressor was also damaged, resulting in considerable losses.

The above are the four major items of attention to the safety of refrigeration equipment sorted out by the small staff of kaideli chiller as the industrial equipment manager, which should be observed and recorded in the operation and operation of the equipment. In order to avoid major safety production accidents caused by small problems of refrigeration equipment, there will be endless troubles if production is delayed!