Screw compressor screw compressor equipment screw compressor optional
Want to decide the parameter that oneself need air compressor above all, performance.Should consider from the following several aspects: whether belongs to the general (chemical, papermaking, food, medicine, instrumentation, fermentation, transportation, pneumatic) according to the flow chart.
1. Exhaust pressure:
The greater the exhaust pressure of the compressor, the more energy is consumed.The sum of the use pressure, pipeline resistance loss and the pressure drop of the supporting equipment is determined as the lower limit of the rated exhaust pressure of the compressor. In general, the diameter of the transmission pipe should be selected larger to reduce the resistance loss and achieve the purpose of reducing energy consumption in long-term operation.The greater the exhaust pressure of the compressor, the more energy is consumed.So do not choose too high exhaust pressure compressor.
2. Air displacement:
Calculate the actual amount of gas ╳ coefficient of 1, 1-1, 2, as choose the models of displacement, if choose too low, can not meet the specified value of gas equipment, choose too much, cause load reducing energy consumption, load reducing running diseconomy.At the same time, the purchase cost of large displacement compressor is relatively high.3. Requirements for compressed air quality:
According to the requirements of industrial gas equipment for compressor gas, the appropriate selection of compressor and supporting equipment.The following should be considered:
1) to reduce the oil content in the compressed gas, oil purifier can be used. If the treatment index is high, multi-stage treatment can be used.
2) water content in compressed gas can be reduced by using water removal equipment.
A.Choose freeze drying machine can do the dew point temperature - 23 ℃.
B.Can be used as more demanding, adsorption dryer, can achieve the dew point temperature - 40 ℃.
Before purchase should be considered, from the use of only found when the trouble.
Compressor installation guide
Compressor arrived, should check the packaging before unpacking, in the transport process whether intact.Ensure the compressor parts and accessories (random factory documents and spare parts) complete.
If any damage is found, the carrier shall sign the acknowledgement and notify the local insurance company of the claim.
installation site:
1. The compressor shall be installed in a clean, dust-free place with no poisonous gas, flammable and explosive gas in the air and in a well-ventilated place (upper exhaust hot air and lower intake cold air).
2, air compressor must be installed in the indoor (if installed in the outdoor, need to build a shed to protect all parts of the unit), lighting brightness to facilitate the operation and maintenance.
3, such as the outdoor environment is poor, dust, room air inlet should be coarse effect filter net, reduce the indoor dust content, and convenient maintenance work.
4 must be higher than 5 ℃, environment temperature, ensure lubricating oil can normal circulation.
5, air compressor must be left around a certain space, 1, 5 meters away from the wall is good, see figure 8, so that the operator daily operation, maintenance and repair work.
6, heat recovery, about 85% of the output power of the compressor can be recycled in the form of hot air, so the installation of the compressor to this part of the energy should be considered, hot air outlet, design in the screw compressor cover roof above, easy to connect the pipeline.
Foundation and piping
1, the compressor does not require special foundation, because there is basically no vibration during the operation of the compressor, the only requirement is to place the compressor on the horizontal hard ground.
2, configuration,
(1) the pipe diameter should be suitable for the flow rate of compressed gas, so that the pipe pressure drop shall not exceed 5% of the set pressure of the air compressor. The components with large resistance coefficient should be minimized in the line. If the pipe is longer, it is better to choose the pipe diameter larger than the designed value.
(2) to prevent the condensed water in the pipeline from flowing to the working machine or pneumatic components along the pipeline, a gas-water separation device and a sewage discharge device shall be installed at the front of the device.
(3) at the outlet of the compressor, a one-way valve and a stop valve shall be installed, followed by a pressure sampling port (rc1/4) and an rc3/4 stop valve (Dg20) for maintenance, so as to connect the hose for maintenance.
Electrical installation requirements and safety specifications
1. According to the input power requirements of the compressor set, the power line diameter should be selected correctly. When the power line is long, the line loss should be considered, and the line diameter should be increased (to avoid the compressor from not starting normally).
2. A separate power supply system shall be considered for the large-volume compressor, so as not to affect the normal operation of other equipment when the compressor is started.
3, air compressor distribution must confirm that the power supply voltage should be consistent with the rated working voltage of the compressor.
4, compression unit must do a good job of reliable grounding line, to prevent the danger caused by leakage of electricity.
5. Before starting the machine, check whether the motor rotates in the specified direction. It is forbidden to reverse operation of the motor to avoid major losses of the main machine.
6, check whether there is a lack of oil, it is necessary to know the special compressor oil label used by the machine, in case of common use.