HIWIN Linear Guideway RWL15HC

06/14/2020

An explosion in a building in Haikou caused 1 death and 10 injuries. The initial judgment was that the central air conditioner was leaking

An explosion in a building in Haikou caused 1 death and 10 injuries. The initial judgment was that the central air conditioner was leaking According to the news released by Haikou, after an on-site investigation by experts, it was preliminarily judged th器2䀀
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08/16/2020

What are the problems with the fan system of air-cooled refrigerators

The fan system of an air-cooled refrigerator is an important part of the air-cooled refrigerator system. The air-cooled refrigerator uses the fan system to dissipate heat for cooling.

09/03/2020

Why do compressors have to go to the workshop

Getting down to the workshop is actually a necessary stage that a compressor cannot bypass, just like socialism is the primary stage of communism (although this is rarely mentioned now, you must remember politics), this is a process.

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

06/20/2020

What are the causes of air conditioning trip

What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. 　　Here are two formulas involved: 　　①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. 　　② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. 　　 So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. 　　 Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 　　 2. Leakage 　　During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. 　　Why does the electric leakage cause the MCB to trip? There are two situations. 　　 ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. 　　②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. 　　How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. 　　 ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. 　　②Measure whether the output current exceeds the standard. 　　 So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.

05/16/2022

What is Air Cylinder?

The cylinder is a cavity ( in which the piston is placed ) on the block of the internal combustion engine. It is the track of piston movement in which gas burns and expands.

08/27/2020

Analysis and Improvement of Broken Shaft of Main Oil Pump of Centrifugal Compressor

I. Introduction<br></br> CNOOC Dongfang Petrochemical's air compressor station installation provides non-purified air and clean air for instruments to all production installations and auxiliary facilities of public works throughout the plant. The unit is manufactured by a foreign company, C1000 series <br></br>

06/19/2025

How to clean the air cooler

Today, the editor of okmarts.com will give you a brief introduction to the cleaning method of the air cooler. I hope it will be helpful to you!

09/14/2020

Application of oil-free lubrication technology in the cylinder of the high-pressure section of the piston-type nitrogen-hydrogen compressor

1. Raising the problem 　　 Compressor oil-free lubrication technology, as a new energy-saving technology, has been developed and applied to various compressors in various industries for more than 60 years.

07/24/2020

Air conditioning system fault diagnosis guide (Part 1)

"Refrigeration system low pressure, high pressure value abnormal", "compressor shell temperature abnormality", "air inlet and outlet temperature difference value abnormal", "air conditioner outlet temperature is too high or low",