The installation standards and requirements of the air compressor are indeed in place in detail!

The installation standards and requirements of the air compressor are indeed in place in detail!

1 Installation environment layout requirements

　　 In order to meet the needs of development, the computer room should have room for expansion in the position of the general map.

The air compressor sucks air directly from the atmosphere. In order to reduce the possibility of wear, corrosion and explosion of the unit, there must be a certain distance between the computer room and the place that emits explosive, corrosive, toxic gas, dust and other harmful substances. The heat dissipation capacity is large, especially in summer, the temperature inside the machine is very high, so the direction of the machine room should make the machine room have good ventilation, and minimize the sun.

　　 Although the compressor has a cabinet, rainwater is strictly prohibited, so the compressor should not be installed in the open air. The compressor room should be a separate building.

　　 The compressor room must be equipped with fixed carbon dioxide fire extinguishing equipment, and its manual switch must be set outside the danger zone. And can be reached at any time. Fire extinguishing equipment Carbon dioxide fire extinguishers or powder fire extinguishers should be placed near the protected target, but should be outside the danger zone.

The installation standards and requirements of the air compressor are indeed in place in detail! 　　

　　2 Computer room installation requirements

　　The ground is best to be a smooth cement floor, the inner surface of the wall should be whitened, the compressor base should be placed on the concrete floor, and the level of the plane should not be greater than 0.5/1000 (mm). There are grooves around 200mm away from the unit so that oil and water can flow away from the groove when the unit is stopped for oil change, overhaul or washing and cleaning the ground. The groove size is determined by the user.

　　 The compressor unit is placed on the ground, and the bottom of the box should be in good contact with the ground to prevent vibration and increase noise.

　　 For qualified users, sound-absorbing panels can be attached to the wall of the computer room to further reduce noise, but it is not suitable to decorate the wall with hard surface materials such as ceramic tiles.

　　As the air-cooled compressor is greatly affected by the ambient temperature, the machine room should be well ventilated and dry. The heat exchange air can be drawn out of the outdoors with an induced draft tube or an exhaust fan can be used to control the compressor's ambient temperature within -5°C to 40°C.

　　 There is little dust in the computer room, clean air, no harmful gas, sulphurous acid and other corrosive media. According to the nature of your company's processed products, the air inlet should be equipped with a first-level filter device. The effective area of ​​window circulation should be greater than 3㎡

　　3 Power supply and peripheral wiring requirements

　　 The main power supply of the compressor is AC (380V/50Hz) three-phase, and the freeze dryer is AC (220V/50HZ). Please confirm the power supply.

　　The voltage drop cannot exceed 5% of the rated voltage, and the voltage difference of each phase is within 3%.

　　 The compressor power supply must be equipped with an isolating switch to prevent short circuit from causing phase loss operation.

　　 Check the fuse of the secondary circuit, and select an appropriate non-fuse safety switch according to the power of the compressor.

The compressor is best to use a set of power system alone, avoid using it in parallel with other different power consumption systems, especially when the compressor power is large, the compressor may be overloaded due to excessive voltage drop or three-phase current imbalance. The protection device tripped.

　　 The grounding wire must be grounded to prevent danger from leakage, and it must not be connected to the air delivery pipe or the cooling water pipe.

　　4 Requirements for pipeline installation

　　The air supply port of the unit has a threaded connection, which can be connected with your air supply pipeline. Please refer to the factory manual for installation dimensions.

　　 In order to avoid affecting the operation of the whole station or other units during maintenance, and to reliably prevent compressed air from flowing back during maintenance, a shut-off valve must be installed between the unit and the air tank.

　　In order to avoid affecting the air consumption during filter maintenance, spare pipelines should be provided on each filter pipeline.

　　 The branch pipeline must be connected from the top of the main pipeline to prevent the condensed water in the pipeline from flowing into the compressor unit.

　　 The pipeline is as short as possible and straight, reducing elbows and various valves to reduce pressure loss.

The installation standards and requirements of the air compressor are indeed in place in detail! 　　

　　5 Connection and arrangement of air lines

　　 The main line of the compressed air pipeline is 4 inches, and the branch line uses the existing pipeline as much as possible.

　　The pipeline should generally have a slope greater than 2/1000, with a drain valve (screw plug) at the lower end, and the pipeline should have fewer bends and short straight valves.

　　 When the underground pipeline passes through the main road, the buried depth of the pipe top shall not be less than 0.7m, and the secondary road shall not be less than 0.4m

　　The installation position and surface size of the pressure and flow meters should enable the operator to see the indicated pressure clearly, and the pressure scale range should be such that the working pressure is 1/2 to 2/3 of the dial scale.

　　 After the system is installed, it should be tested for air pressure strength and air tightness, but not for water pressure test. It is carried out at 1.2 to 1.5 times the pressure of the same gas, and no leakage is qualified.

　　6 Anti-corrosion of air pipeline

　　After the installation is completed and the pressure test is qualified, the surface dust, dirt, rust, welding slag, etc., are removed from the surface, and then painted as an anti-corrosion treatment. The pipeline painting has the effect of anti-corrosion, extending the service life of the pipeline, and is also easy to identify and beautiful. Generally, apply the anti-corrosion paint once on the surface first, and then apply the specified blending paint.

　　7 Lightning protection of air pipeline

　　 Once the high-voltage electricity induced by lightning in the pipeline is introduced into the workshop piping system and gas equipment, it will cause equipment personal safety accidents. Therefore, the pipeline should be well grounded before entering the workshop.

　　8 Pipeline pressure loss

　　 When the gas flows in the pipe, frictional resistance is generated in the straight pipe section; local resistance is generated at the valve, tee, elbow, reducer, etc., resulting in gas pressure loss.

　　Note: The total pressure drop of the pipeline part should also be added to the pressure loss caused by elbows, reducers, tee joints, valves, etc. These values ​​can be found in the relevant manuals

　　9 Ventilation of compressor air pressure system

　　 Regardless of whether the user uses an oil-free machine or an oil injection machine, and whether the user uses an air-cooled compressor or a water-cooled compressor, the ventilation problem of the air compressor room must be solved. According to our past experience, more than 50% of the failure causes of air compressors are due to neglect or misunderstanding of this aspect.

A large amount of heat will be emitted when the air is compressed. If this heat cannot be discharged from the air compressor room in time, the room temperature of the air compressor room will gradually rise, so that the temperature of the air compressor suction port will increase. The higher the value, such a vicious circle will cause the air compressor exhaust temperature to be high and alarm, and at the same time, the low density of the high-temperature air will result in a decrease in air production.

The installation standards and requirements of the air compressor are indeed in place in detail!

　　 Further reading

For water-cooled compressors, most of the heat is transferred to the cooling water through the heat exchanger, and the heat is taken away by the cooling water. At this time, only a small ventilation fan is needed to take a small part of the heat from the main motor. Just go. For air-cooled compressors, a large amount of fresh air is needed to exchange the heat generated in the compression process, so the inlet of fresh air must be considered, and the inlet should be close to the air compressor cooling air intake (used for The air inlet of the compressed part should be close to the fresh air inlet).

　　 If necessary, a separate air duct can be set to introduce fresh air, which can prevent the hot air from the air compressor room from affecting the cooling process. Of course, this depends on the structure of the air compressor room and the customer's situation. Generally speaking, an air duct should be set to lead the hot air that has undergone heat exchange out of the air compressor room. If necessary, a fan or blower should be installed at the outlet to enhance the effect of the hot air.

The fresh air inlet mentioned above needs to be set at a low position in the air compressor room, and the hot air outlet (including the corresponding fan or blower) must be set at a high position, because the density of hot air is low, and generally stays at a high position. It is beneficial to lead out the hot air, and at the same time, it prevents the discharged hot air from entering the air inlet again and causing a short circuit of the air flow.

　　 Another thing to note is that it is best to install the fresh air inlet and the hot air outlet on two opposite walls. The purpose of this is also to prevent the discharged hot air from entering the air inlet again and causing a short circuit. It is best to install a dust-proof grid at the fresh air inlet to prevent more dust or catkins from entering the air compressor room, and to install a rain cover at the hot air outlet to prevent rainwater from entering the heat exhaust duct.

　　 Regardless of the air duct of the air inlet or the air duct of the exhaust outlet, a relatively large diameter reduction or elbow should be avoided, because this will cause a relatively large ventilation resistance and affect the ventilation effect. Because the air in the compressed air room is continuously used for compression and cooling, and the fresh air is generally supplied passively, it is normal that a certain negative pressure is maintained in the compressed air room.

　　 But if the negative pressure value exceeds the allowable value, it means that the size of the air inlet or the air intake volume needs to be improved, because too much negative pressure will cause the cooling effect to deteriorate and the exhaust volume to decrease.

Although the above content is relatively simple, it is very important. If we can work together with users to do this work well, 50% of the possibility of failure has been ruled out. It can be seen that more energy should be spent in this area for us and users. It's all worth it.