How to increase the utilization of compressed air

Since the pressure of the system can express demand, throttling is usually controlled by the force. However, most air systems are complex and the changes in demand are not determined by this factor alone. For operations with complex changes in the demand cycle, it may mean that several different sizes of air cleaners and other devices that maintain system pressure also require more complex control systems. The most common such system is an electrodynamic control system.

More than 70% of the existing air systems use electric motion control systems. These air compressors have electrical and mechanical controls, such as pressure switches, solenoid valves, measuring needles, etc., which are regulated by the use of a human throttle valve or a bypass valve. Load and unload. This kind of control system mainly relies on mechanical pressure switches to monitor whether the air compressor's discharge power is appropriate.

In addition, electrical operators can provide at least one microcomputer system. Some new machines have completely eliminated the old and inefficient control systems. Some manufacturers can even provide "micro-computer control systems" for air compressor auxiliary devices such as air dryers, converter kits for older air compressors, etc. These upgrades are for compressors, especially for reciprocating air compressors. The benefits of Zenger# and the reduced maintenance costs are considerable, and the reason for this leap is that the D-microcomputer system has a clear advantage over the electro-dynamic controller. Here are some examples.

Accuracy measurement

Measurement accuracy is one of the most important functions for control systems. A decrease in measurement accuracy can directly result in damage to the air compressor and an increase in downtime. If the set point of the temperature alarm is increased for more than a certain period of time, the air compressor will operate in a dangerous state, and the temperature and pressure switch of the electric control system will change due to long time of use and wear and the like. The set point is therefore prone to the dangerous situation mentioned above. The microcomputer control system has an accurate recovery function. Once it is determined, there will be no sliding drift at the set point, thus reducing the risk of damage to the machine. Inaccurate measurements, in turn, can affect the ability of the control system to function properly in harsh environments. Environmental conditions change. If the time is running, the pressure gauge and thermometer need to be recalibrated to maintain accuracy. This is not only time-consuming, laborious, and costly, but also requires skilled instrument technicians, which will undoubtedly increase operating costs. Microcomputer system sensors are less affected by objective conditions such as vibration and heat. If recalibration is required, the button can be completed from the microcomputer control panel to minimize downtime.

Many companies require daily maintenance and repair work on air compressors. It is necessary to check the temperature, pressure and other various indicators of the air compressor recorded on the continuous recording paper every day. For most control systems, the operator must manually record the readings of the air compressor meter. Many air compressors equipped with electric control systems can use the instrument to detect several functions of the air compressor. Sometimes the records are unclear. It also requires the operator to analyze the collected data to determine the percentage of air pressure algae wins. The circle state%吟斌 breeding field wins the working status of the secret beach. All the controllers are centralized on the control panel of the microcomputer, and the operator can obtain various state values ​​of the air compressor operation by clicking the button.

For example, monitoring the air end discharge temperature of a screw air compressor is an important means to reduce the downtime. In this case, if these values ​​change, the microcomputer control system alerts the operator to preventive maintenance work. In addition, for older centrifugal air compressors and reciprocating air compressors, the addition of microcomputer control often eliminates many complex capacity control devices. The microcomputer's control panel also allows the operator to adjust the shutdown set point in an automated manner and respond to the alarm, eliminating the need to mechanically set each protection switch.

With the microcomputer control system, a full system reset can also be performed on the control panel. When the air compressor goes through a trip, it is sometimes difficult to determine the cause. Because several alarms may have been activated, the microcomputer control system can monitor multiple alarms, and once a trip occurs, it can recall the alarm and help identify the various conditions at the time the problem occurred. In addition, the microcomputer control system can help identify faults through its monitoring and alarm function. Even if the microcomputer is activated during automatic operation and the system has been automatically corrected, this alarm will remain on the control panel along with many operating parameters when the alarm occurred, which makes it possible for the operator to reproduce and evaluate the alarm. Activate the operating status of the space-time press.

Multiple functions such as remote work and air compressor sequencing The microcomputer control system also has the benefits of two remote working functions, including communication between the operator and the air compressor, and between the air compressor and the air compressor. Some of today's microcomputers have such features & can integrate remote or two-way communication functions with the microcomputer. By connecting the two-way communication function to the control system, the operator can control the entire shop's control system and communication functions with remote data. The terminal or computer is integrated. The data connection also allows the operator to monitor the status of the system's operation from the remote end and program the air compressor to load, unload and change the work program. Another advantage of two-way communication is the ability to restore maintenance observations and statistics to understand operational trends and enable shop floor operators to place parking for "unscheduled" systems into routine maintenance procedures.

The air compressor control system also facilitates the operator to program the air compressor, and automatically controls and processes the functions of multiple air compressors through a single controller. The system controller also enables these air compressors to self-adjust the fluctuations in air demand and maximize operating efficiency while reducing unnecessary energy consumption. The system controller generally uses a single pressure sensor and is installed in a suitable position in the compressed air system to monitor the pressure of the entire system and adjust the operation according to the program settings.

We can compare a typical sequencer that requires an overlapping or tandem system pressure band and a fixed wheeling method. The controller can operate multiple air compressors on a common control pressure belt. Minimize energy consumption.

In addition, a variety of operating parameters can be programmed into the system controller, including target system pressure, system pressure band, air compressor loading, unloading and lag time, sequencing control mode, and start and stop sequencing. With the further development of technology, the microcomputer control system will surpass the basic scope of the air compressor function and provide the operator with an "integrated function" that allows it to be selected without restriction. This not only extends the service life of the air compressor, but also further improves the overall efficiency of the entire workshop.