Refrigeration equipment accessories and pipeline installation method

Refrigeration equipment accessories and pipeline installation method

What are the installation methods of refrigeration equipment accessories and pipes? Let me tell you the answer today with okmarts.com editor!

　　 One, auxiliary equipment condenser, evaporator, liquid reservoir, oil separation gas, vapor-liquid separator, filter

　　 1. Check whether the direction and position of the nozzles of each equipment meet the design requirements;

　　2. Airtightness test and monomer blowing should be carried out. (The test pressure value depends on the refrigerant used. For R22, the high-pressure side is 2.0~2.5Mpa and the low-pressure side is 1.8Mpa);

　　3. The installation level deviation of horizontal equipment is 1‰;

　　4. The oil collector (oil outlet) should be slightly lower;

　　5. The thickness of the gasket should be added to the contact between the low-temperature side equipment and other equipment not less than the thickness of the insulation layer;

　　6. ​​The direction and position of the pipeline connected to the equipment should meet the process flow and design requirements.

　　 2. Refrigeration system pipe installation

　　 Before installing the refrigeration system pipeline, the oxide scale, pollutants and rust in the pipe should be removed first, so that the inner wall has a glossy surface, and the two ends of the pipe can be closed.

　　 3. Connect the branch pipe to the liquid pipe, which should be connected from the bottom or side of the main pipe

　　 When connecting the branch pipe to the trachea, it should be connected from the upper part or the side. The liquid supply pipe should not be curved upward, and the suction pipe should not be curved downward except for the specially set oil return bend.

　　 Fourth, the slope and slope of the refrigerant pipe connection between the equipment:

　　 Compressor intake horizontal pipe slope to compressor slope: ≥1%;

　　 Compressor exhaust horizontal pipe slope to oil separator slope: ≥1%;

　　Condenser to evaporator horizontal pipe slope to evaporator slope: 1~3‰;

　　The oil separator to the condenser horizontal pipe slope to the oil separator slope: 3~5‰;

　　 Five, matters needing attention

　　 1. The thermal insulation material, thermal insulation range and thickness of equipment and pipelines should meet the design requirements.

　　2. All valves on the pipeline should be subjected to a monomer air tightness test.

　　3. The installation of valves and accessories should meet the following requirements:

　　 (1) The one-way valve should be installed according to the direction of refrigerant flow;

　　 (2) For valves with handles, the handle must not be downward;

　　 (3) Valve heads of solenoid valves, thermal expansion valves, lift check valves, etc. should be installed vertically upwards;

　　 (4) The installation position of the thermal expansion valve should be close to the evaporator for adjustment and maintenance; the installation of the temperature sensing bulb should meet the requirements.