1. Installation site

A suitable installation site is a prerequisite for the correct use of the air compressor system. The selection of the installation site should ensure that the maintenance of the air compressor is convenient in the future and avoid the abnormal operation of the air compressor due to the unsatisfactory environment.

The installation site requires good lighting and sufficient lighting to facilitate operation and maintenance.

Low relative humidity, no corrosion, no metal chips, less dust, clean air and good ventilation.

If the factory environment is poor and dusty, a ventilation duct should be installed to direct the intake end to a place where the air is relatively clean. The installation of the pipe shall be easy to disassemble and assemble for maintenance, and the installation size shall refer to the external size of the air compressor.

The space around the air compressor must be reserved enough for other parts to enter and exit, and the air compressor must be at least 1.5 meters away from the wall. The distance between the air compressor and the top space is more than 2 meters.

If the air compressor is installed in a closed air compressor room, an extraction fan must be installed to exhaust the heat exchange gas.

If the ambient temperature is too high (greater than 40 ° C), it is recommended to take cooling measures (such as avoiding direct sunlight, opening doors and Windows, etc.) to avoid unnecessary high-temperature shutdown; For example, the ambient temperature is low.

Second, piping, basic and system precautions

1. Piping

When piping, the aftercooler shall not be subjected to additional forces. Welding sparks are strictly prohibited from falling into the air compressor to avoid burning the internal parts of the air compressor.

The main road must have a downward inclination of 1°~2° to facilitate the discharge of condensate water in the pipeline (the pipeline should be plugged with blowdown screws and periodically blowdown).

The diameter of the pipe must be greater than or equal to the diameter of the compressor exhaust port. Minimize the use of elbows and various valves in the pipeline to reduce pressure loss.

The main road should not be arbitrarily reduced or enlarged, if it must be reduced or enlarged, the gradual tube must be used, otherwise there will be turbulence at the joint, resulting in a large pressure loss, and due to the impact pressure of the gas, the life of the pipeline will be greatly shortened.

The branch pipe must be drawn out from the top of the main pipe to prevent condensate in the main pipe from flowing into the machine.

It is recommended to install a gas storage tank after the unit, which can reduce the number of air compressor loading, unloading and replacing, and extend the life of the body and electricity.

If the air compressor has air storage tank, dryer and other purification buffer facilities, the ideal pipe distribution should be air compressor + gas storage tank + dryer. The gas storage tank can reduce the temperature of the discharged gas, remove most of the water, and the air with lower temperature and less water enters the dryer, which can reduce the load of the dryer.

For compressed air less than 1.5MPa, the flow rate must be less than 15m/s to avoid excessive pressure drop in the pipeline.

The ideal piping is that the main line runs around the entire plant with appropriate valves on the ring main. In this way, the linear pipeline at any position of the plant can obtain compressed air in both directions, and if the gas consumption of a branch suddenly increases, it will not cause an obvious pressure drop; In addition, the valve can be used to cut off the pipe during maintenance.

2. Foundation

The foundation should be built on a hard soil or cement floor, and ensure that the plane is smooth to avoid additional vibration caused by tilt.

If the air compressor is loaded upstairs, it must be well anti-vibration treatment (such as a layer of 10mm thick rubber) to prevent the transmission of vibration and the generation of resonance.

3. Cooling system

A. The water cooling unit needs to build a cooling tower to take away the heat of the cooler through the cooling water.

The cooling water uses soft water to avoid the chemical reaction of calcium and magnesium plasma in the water due to high temperature, forming scale in the cooler, affecting the heat transfer effect of the cooler, if the cooling water is used. Tower circulation system, the water must be regularly added softener to maintain the clean water quality.

The automatic replenishment system of the cooling water circulation system needs to be improved, otherwise after several hours of operation, the insufficient cooling water will cause the air compressor to stop due to high temperature.

The cooling system of the air compressor is used separately to avoid sharing with other systems to prevent the water volume from affecting the cooling effect.

The cooling water tower must comply with the cooling water amount specified by the air compressor, and the power number of the pumping pump should be correctly selected. The cooling water tower should be placed in a place that is easy to dissipate heat, well ventilated, and should be supported and fixed to prevent dumping.

The water pressure of cooling water should generally be maintained between 0.25 and 0.40MPa, and the height should not exceed 0.5MPa

Cooling water outlet temperature should be kept below 40℃.

b. The air-cooled unit uses air convection through the fan, so that the cold air takes away the heat of the cooler to control the temperature of the unit.