Removal of insufficient pressure

1. Plugging

The way to reduce gas consumption is to check the operation of the drive air compressor and its pipe network, focusing on whether there is leakage. Small leakage is not easy to find, and large leakage will naturally cause system pressure drop and gas consumption reduction. According to statistics, the average leakage of compressed air accounts for 30% of the total amount of compressed air, while nearly 60% of factories have not taken any measures for leakage in the air system. Common leakage places of compressed air include pipes, joints and flanges, drain valves, hoses, gas distribution pipes and instruments.

Inspection method for compressed air leakage: listen, it is applicable to obvious leakage points, but it is easy to be confused with normal gas use, and it is difficult to confirm the exact leakage point; Brushing soapy water has a large workload and is not necessarily suitable for clean rooms; Special instruments, ultrasonic side leak meters, etc. are easy to operate to find leakage, but need investment and equipment maintenance. However, in order to ensure gas demand and save energy consumption, maintenance should be organized in time to reduce losses.

2. Replace the filter element

The pressure cannot reach the rated value due to clogged filter element. If the alarm is given or the filter element is found to be faulty, replace the filter element in time to ensure its access

The smooth flow of gas.

3. Check the intake valve

One detail of finding that the pressure rating is insufficient is to check the intake valve. We found that the intake valve is easy to get stuck, but if the intake valve when the valve baffle is removed, the intake filter element will be blocked quickly after a period of time, and the loading and unloading will also be affected. The baffle must be installed. Then check the intake valve.

Temperature detection of valve cover: regularly check and record the surface temperature of inlet valve cover and make icon records, combined with the operation of instrument detection equipment line parameters (such as temperature and pressure), according to the recorded temperature changes, analyze the operation status of the inlet valve, predict the service life, and make reasonable arrangements.

Inspection time

Detection of air inlet valve operation sound: use stethoscope and other tools to monitor the movement sound of air valve disc and compare it with the valve of the same level and the same name, which is very easy to distinguish

Identify the inlet valve that is not working properly.

Analyze the change of process parameters: once the gas valve leaks, it will cause the change of temperature, pressure or flow. The inlet valve fault can be analyzed through the changes of these parameters.

4. Set the air compressor pressure reducing valve

Various parameters have been set before the air compressor leaves the factory, and are generally fixed. However, after a period of operation, the parameters will be changed if the fault occurs. In the case that the pressure rating is not up to standard, check the parameters of the pressure reducing valve to see if it has changed.

5. Check the sensor

In general, the values of the sensor, such as pressure or temperature, can be borne by itself, and will not be transmitted due to ultra-high pressure or ultra-high temperature sensor failure.

If there is a problem with the sensor, first check whether the connector is loose. If there is slight leakage or damage due to other reasons, replace it in time.

6. Replace the regulator

Various parts may fail due to life cycle or external or internal reasons. Although the regulator is not a vulnerable part, it cannot eliminate problems due to various reasons. If it is found that the compressor cannot continue to be used, it should be replaced in time to ensure that the compressor is in good condition.

Summary

There are many kinds of compressor faults. As screw compressor, it has high sensitivity and low failure rate due to integrated circuit control the alarm is timely and accurate, so we have fewer failures than the piston engine. However, for example, the discharge pressure of the compressor cannot reach the rated value, pressure and other faults also need to be summarized and discussed by operators in a timely manner to deal with them correctly, reduce the impact on downstream users' production and improve compressor operation efficiency.