What is the Structure of Air Compressor?
Air compressor is a device used to compress gas. The air compressor is similar in construction to the water pump. Most air compressors are designed by reciprocating piston, rotary vane or rotary screw. Centrifugal compressors are very large applications. Next, we will introduce the structure of the air compressor. We hope that after reading this article, you will have a better understanding of air compressors.
Composition structure
First, let's introduce the structure of the air compressor. The air compressor has oil circulation system, air circulation system, water circulation system, and power distribution system, screen protection system, etc. Next we will introduce them to you one by one.
Oil circulation system
Before starting the machine, first start the oil pump control system. After the oil pump control system is started, the lubrication conditions of the lubricating parts of the air compressor are guaranteed to be good. At the same time, the oil pump control system can adjust the internal oil pressure and oil temperature through the built-in temperature control valve to meet the system needs.
Air circulation system
When the compressor is working, the air is sucked in through the self-cleaning air filter, and the filter is automatically cleaned by the PLC. The air enters the first-stage compression after being automatically adjusted by the inlet guide vanes. The gas temperature after the first-stage compression is high, and then the air enters the intercooler for cooling (the water goes inside the pipe and the air goes outside the pipe, and the water flow of the intercooler is required to be 110m/h). The air enters the secondary compression system. In order to prevent the gas in the system from pouring into the compression chamber (to avoid starting with pressure), a hanging full-open check valve is installed in the exhaust pipe of the compressor. The gas discharged from the compressor pushes the check valve and enters the exhaust muffler. Then the air enters the first-level aftercooler, the second-level aftercooler, and then enter the exhaust main pipe.
Water circulation system
The cooling water enters the air compressor intercooler through the pipeline to cool down the gas discharged from the first-stage compression, and then enters the aftercooler to cool the exhaust gas. Another cooling water inlet pipe passes through the two sets of heat exchangers on the upper part of the main motor to cool the motor windings. There is also a way to cool the oil cooler.
Distribution System
The air compressor is a 2000kW high voltage motor (10kV) with full voltage start. The control cabinet is indoor AC, metal armored extractable switchgear. The switchgear is composed of a fixed cabinet and an extractable part, that is, a handcart. This design realizes the purpose of control, protection and monitoring.
Screen protection system
The central signal device is divided into two types: accident signal and pre-announcement signal. The main task of the accident signal is to send out an audio signal in time when the circuit breaker trips in an accident, and make the corresponding circuit breaker light position signal flash. The main task of the pre-announcement signal is to send out an audio signal instantaneously or delayed when an abnormal phenomenon occurs in the operating equipment, and make the light plate display the content of the abnormal phenomenon.
DTC control system
The DTC control screen is the "brain" of the air compressor, and the values of various field sensors are finally summarized into the DTC control screen. Various operating parameters can be displayed on the DTC control screen, and the operating status of each part of the air compressor can be monitored. When some parameters exceed the allowable range, DTC will issue corresponding alarms or automatically stop the air compressor.
