First, the installation of the overall piston air compressor

For medium and small compressors, they have been assembled into a complete machine by the manufacturer and passed the test run. The compressor that has been checked and stored without problems is not required to be disassembled, and the entire installation can be performed; if necessary, only some parts are cleaned and inspected.

1. The horizontal degree of the horizontal compressor can be measured on the slide. The horizontal deviation should not be greater than 0.10mm/m. The axial level can be measured at the overhang of the main shaft. The horizontal deviation should not exceed 0.10mm/m. .

2. The longitudinal and horizontal levels of the vertical compressor can be measured on the cylinder stop surface or the cylinder top plane, and the horizontal deviation should not exceed 0.1 mm/m.

3. The allowable value of the horizontal and horizontal deviation of the L-type and inverted-T compressors is the same as that of the horizontal compressor; the measurement position and horizontal deviation of the vertical column level are the same as those of the vertical compressor. .

4. The longitudinal and horizontal levels of V-type, W-type and fan-shaped compressors can be measured on the horizontal measuring boss beside the bolt hole of the base or on the vertical cylinder top plane. The horizontal deviation should not exceed 0.10mm/ m.

5. For the machine on which the air compressor and the motor are on the common base, the level can be directly measured on the base, and the deviation should not exceed 0.1mm/m.

6. After the compressor is installed and tested, the suction and exhaust valves should be removed for cleaning inspection, and the cylinder clearance should be measured by the pressure lead method.

7. For compressors that have doubts about transportation or have a long storage time, after installation, the connecting rod, large and small bearing bush, crosshead, cylinder mirror surface, piston, gas valve, etc. should be cleaned and inspected, and reassembled after confirmation.

8. After the whole compressor is installed and inspected, the test operation can be carried out.

The installation process of the integral piston air compressor, including basic inspection and acceptance, horn selection, machine seating, leveling, alignment, secondary grouting, and cleaning, inspection and adjustment of parts, shall be in accordance with the regulations and Follow the procedure.

Second, the installation requirements of the piston air compressor motor

Most of the piston air compressors are driven by electric motors, and the electric motors should be installed with electricians.

1. Before the motor is installed, it should be checked macroscopically. The number and nameplate of the motor should be complete. The lead wire of the motor should be welded or crimped well. The rotor should be flexible and free of magnetic sound.

2. Correctly determine the air gap between the stator and the rotor. First determine the maximum radius point B of the rotor on the outer circle, take a point A on the stator as the measuring point, number the rotor poles in order, and when the fan blades are removed, compile the same serial number and make a permanent mark; turn the rotor and turn along the rotor The distance between point A and the poles of the rotor is measured in the radial direction; the point at the minimum distance from the point A on the rotor is point B, which is the maximum radius point on the outer circumference of the rotor. Take 10 points on the stator, take the B point on the rotor as the measuring point, and rotate the rotor to check the gap between the B point and the 10 points of the stator. When using the feeler gauge, the length of the feeler inserted from both sides should exceed the width of the magnetic pole 3/ 4; The air gap deviation between the stator and the rotor is measured, which should be less than 5% of the average gap value, and the upper gap should be 5% smaller than the lower gap. For axial positioning, the magnetic centerlines of the stator and rotor should be aligned with each other.

3. After the air gap of the motor is checked, install the fan blades and tighten the connecting bolts to make the locking device cumbersome.

4. Insulation gaskets should be added between the bearing housing and the base of the motor, and between the stator frame and the base. The bolts and positioning pins should also be insulated to prevent the induced current from passing through the bearing and destroying the oil film.

5. Adjust the level of the motor base, the deviation should be less than 0.10mm/m; the deviation of the corresponding center position between the motor and the fuselage should be less than 0.50mm.

6. The centering deviation between the motor and the main shaft. When a rigid coupling is used, the radial direction should not exceed 0.03mm, and the axial inclination should not exceed 0.05mm/m. The axial clearance at both ends should conform to the technical data; When using non-rigid couplings, they should be carried out in accordance with the relevant technical data.

7. When the rigid coupling of the motor is connected to the compressor, the bolt hole of the coupling bolt of the coupling can be precisely hinged after the motor shaft and the compressor main shaft are qualified. The interference of bolts and bolt holes shall comply with the provisions of the machine technical documents; if there is no regulation, the device shall be installed according to the interference of 0.0003D (D is the bolt diameter, mm).

8. After the motor is installed, locate the positioning pin at the stator and base; at the same time, the fan and air duct should be completed as required.

9. After the motor is installed and checked, the no-load test run should be carried out. The running time is generally 2h, and the no-load current is recorded. Check that the motor is turning correctly and there is no noise; the commutator, slip ring and brush work normally; the motor temperature is normal and there is no overheating; the temperature rise of the sliding bearing should not exceed 55 °C, and the temperature rise of the rolling bearing should not exceed 65 °C.

After the motor test run is qualified, the test run of the compressor unit is prepared, and the installation of the auxiliary equipment and piping of the piston air compressor is carried out according to technical requirements.