How important is the installation environment of the refrigeration unit Doing these 4 points is enough!

How important is the installation environment of the refrigeration unit Doing these 4 points is enough!

The refrigeration equipment (compressor unit) is installed in the machine room, and the surrounding environment should be maintained:

①There should be no less than 1.5m of clear space in the height direction of the refrigeration compressor, no less than 0.6~1.5m of clear space in the front and rear, no less than 0.6m of clear space at one end of the wall in the left and right direction, and no less than at the other end. Clear space of 0.9~1.2m.

　　② The ambient temperature should not be lower than 10℃.

　　③When the unit is installed outdoors, it must have wind, rain, and sun protection facilities, and measures to prevent corrosion and ensure electrical insulation. It should be isolated from high-temperature heat sources, flammable and explosive materials or explosive containers.

⑤The machine should be shockproof and soundproof.

Refrigeration equipment construction requirements:

　　①The foundation of the refrigeration equipment (compressor unit) should have sufficient strength, and the concrete foundation should be buried below the ground level. Usually the basis weight is about 2 to 5 times the weight of the compressor unit. For small and medium-sized units, the refrigeration compressor and motor can be installed on a common chassis first, and then installed on the foundation.

　　②The refrigeration equipment (compressor unit) should be installed horizontally, and the leveling adjustment can be adjusted with a level gauge and wedge-shaped horn with an accuracy of not less than 0.02~0.05mm/m. In order to reduce vibration and noise, a shock-absorbing device, such as rubber shock-absorbing pads, springs, etc., should be added between the machine base and the foundation.

　　③The belt of the refrigeration compressor is parallel to the groove of the motor pulley, and the belt tension should be appropriate. The inspection method is to press the middle position of the belt span by hand, and a belt within 100mm length is suitable for bending about 1mm.

　　④ The installation of the condenser shall be subjected to an air pressure test of 176.4N/cm2. The outlet pipe of the condenser should be inclined to the accumulator with a slope of 1/1000. Before installing the evaporator, perform a pressure test of 156.8N/cm2. Between the evaporator or cooling drainage base and the foundation surface, a 50~100mm thick heat-insulating hardwood mat shall be added, and asphalt shall be coated for corrosion protection. The small-tonnage cold storage does not need to set up the liquid adjustment station, and the liquid is directly supplied by the liquid reservoir. If a cold storage with a large tonnage is composed of several cold rooms, and each cold room is equipped with an evaporator or cooling pipe, a liquid conditioning station must be set up. The liquid storage device supplies liquid to the conditioning station, and then the conditioning station Through the throttle valve, liquid is supplied to each evaporator or cooling pipe.

⑤The pipe connection methods generally include welding, threaded connection and flange connection. Except where threaded or flanged connections must be used for installation and maintenance, welding should be used as much as possible. When threaded connection, the thread should be coated with lead oil or PTFE sealing tape. For flange connection, the flange joint surface should be made with convex and concave stops, and 1~3mm thick, with lead oil on both sides should be added to the stop. Medium pressure asbestos rubber sheet pad.

⑥Pipe installation slope: the horizontal pipe section of the oil separator of the refrigeration compressor exhaust pipe is inclined 0.3%~0.5% to the direction of the oil separator; the oil separator to the condenser pipe section is inclined 0.3%~0.5% to the direction of the condenser; the condenser discharge liquid The horizontal section from the pipe to the high-pressure reservoir is inclined by 0.5% to 1.0% in the direction of the high-pressure reservoir; the horizontal pipe section from the liquid sub-regulating station to the cooling pipe is inclined by 0.1% to 0.3% in the direction of the cooling pipe; the cooling pipe to the gas branch The horizontal pipe section of the regulating station is inclined 0.1% to 0.3% toward the cooling pipe; the horizontal pipe section of the Freon suction pipe is inclined 0.19 to 0.3% toward the refrigeration compressor.

　　⑦ For the bending of the pipe, when the pipe diameter is below Ф57, the elbow radius shall not be less than 3 times the outer diameter of the pipe; when Ф57 or more, the elbow radius shall not be less than 3.5 times the outer diameter of the pipe. The connection of the pipe should take into account the thermal expansion and contraction of the pipe. Therefore, when the low-pressure pipe exceeds 100m and the high-pressure pipe exceeds 50m, telescopic elbows should be added to the appropriate position of the pipeline.

　　⑧The wall pipe support base should be heat-insulated hardwood, the wall pipe should be more than 150mm away from the wall, and the ceiling pipe should be more than 300mm away from the ceiling.