Six major causes of corrosion in industrial chillers
With the development of science and technology, industrial chillers are more and more used in various fields of industry, for industrial production and improve product quality has played its due contribution, and industrial chillers are also a mechanical equipment, running for a long time, there will also be some problems, among which corrosion belongs to one of the common phenomena of chillers.
In order to avoid corrosion and extend the service life of the chiller, the following Ruixue Xiaobian discusses several reasons for chiller corrosion for industry friends, and then takes corresponding measures to avoid chiller corrosion and affect the production of their own enterprises.
1. Corrosion caused by unreasonable engineering construction, design and installation.
Some industry friends should have encountered, such as industrial chillers after purchase, especially ordinary chillers, have not done anti-corrosion, anti-rust and other process treatment, directly placed in the outdoor environment, for a long time, wind and sun caused shell corrosion.
2. Corrosion caused by incorrect installation or abnormal work of the water processor.
The cooling water pipeline is the channel of the water-cooled chiller for cooling water circulation, and the water quality determines whether the system pipeline has scale and rust, and the water processor will cause rust if it is not installed in place or works abnormally.
3. The decontamination device is mostly Y-type filter, which is weak in filtering fine impurities.
Y-type filter, simple installation, simple cleaning, can coarse filtration of mechanical impurities, iron filings, sand particles, but fine impurities can not be finely filtered, so the unit runs for a long time, easy to cause condenser fouling, sludge and other impurities.
4. There is no quick sewage valve installed in the chilled water system
Quick sewage valve is a sewage valve applied in freezer or chilled water system, which is characterized by simple structure, good sealing, small size and light weight, especially suitable for regular sewage discharge of the system, and has the advantages of corrosion resistance, impact resistance and long service life.
At present, many enterprises have not installed a quick blowdown valve at the end plate of industrial freezers. It will cause corrosion of the system pipeline, usually use the chiller, should open and close the sewage valve 3 times a week to facilitate the system sewage discharge.
5. The water meter is not installed in the water replenishment pipeline of the cooling system
Cooling system for the treatment of water quality, generally use agents and fungi, used to kill and manage internal fungi, microorganisms, all kinds of dirt, etc., the use of agents should be according to the amount of water replenishment and system water volume, quantitative agents.
If there is no water meter for measurement, it will cause the dispensing amount to be inaccurate, resulting in corrosion of the system pipeline in the later stage.
6. Acid and alkaline gases in the environment cause corrosion to the surface of the equipment
It is inevitable that there will be special gases in factory production, such as the flow of acid and alkali gas, which will cause harm to the surface of the equipment, so the choice of chiller in such an environment should explain to professionals in advance, and give priority to explosion-proof and corrosion-resistant pipeline production in terms of electric control chassis or evaporator pipeline. So as not to cause later corrosion loss.
With the development of industry, the continuous application of new materials and new processes, the use scenarios of industrial chillers have become diverse, and the probability of equipment corrosion has also increased.
In the circulation system of the refrigerator, the compressor inhales low-temperature and low-pressure refrigerant steam from the evaporator, which is adiabatically compressed by the compressor into high-temperature and high-pressure superheated steam, and then pressed into the condenser for constant pressure cooling, and heat is released to the cooling medium, and then cooled into a supercooled liquid refrigerant.