Gas wave refrigerator

A gas wave refrigerator, comprising:

• a first end body;
• a second end body;
• a main body disposed between the first end body and the second end body;
• a first end cover;
• a first single mechanical seal;
• a nozzle rotator, the nozzle rotator comprising a first row of nozzles and a second row of nozzles;
• two press plates;
• a main shaft;
• oscillation receiving tubes;
• a belt wheel;
• two bearing boxes;
• a second end cover;
• exhaust pipes;
• a gas inlet pipe;
• second bearings;
• and
• a hydraulic balance device, the hydraulic balance device comprising a hydraulic cylinder, a hydraulic mandrel, first bearings, a piston, and a piston ring;
• wherein:
• outer walls of the first end body, the main body, and the second end body form a shell of the gas wave refrigerator;
• the main shaft is disposed in the main body and comprises a first half shaft that is solid and a second half shaft that is hollow;
• the nozzle rotator is in a cylindrical shape;
• the first row of nozzles and the second row of nozzles are disposed circumferentially on a lateral surface of the nozzle rotator;
• the two press plates are respectively disposed at a top surface and a bottom surface of the nozzle rotator;
• the two press plates and the nozzle rotator are installed on the main shaft;
• nozzle exits of the first row of nozzles are aligned with or staggered from nozzle exits of the second row of nozzles at an axial direction of the nozzle rotator;
• the oscillation receiving tubes are disposed on the main body in two rows corresponding to the first row of nozzles and the second row of nozzles, respectively;
• the hydraulic mandrel is disposed in the hydraulic cylinder and is supported by the first bearings;
• the hydraulic mandrel butts against a center of the first half shaft of the main shaft;
• the hydraulic cylinder is embedded in one end of the first end body, and is sealed by the first end cover;
• the piston and the piston ring are disposed between the first bearings;
• the second end body is connected to the second end cover;
• the exhaust pipes are arranged on the lateral surface of the nozzle rotator;
• the belt wheel is arranged in a middle of the main shaft;
• the gas inlet pipe is connected to the main shaft;
• labyrinth seals are provided between the nozzle rotator and the exhaust pipes;
• a second single mechanical seal is disposed between the gas inlet pipe and the belt wheel;
• the second bearings are arranged at two ends of the main shaft, respectively;
• the two bearing boxes are arranged on two ends of the gas wave refrigerator, respectively;
• one of the two bearing boxes is disposed in the first end body, and the other one of the two bearing boxes is in the form of an embedded bearing seat in the second end body;
• bidirectional spiral seals are arranged on the main shaft;
• the first single mechanical seal is arranged on the main shaft;
• one end of the first single mechanical seal is provided with a seal cover;
• a circumference of an outer circle of the shell of the gas wave refrigerator is provided with three screw holes;
• an included angle between each two adjacent ones of the screw holes is 120°;
• and
• the seal cover is fixed by three tapered threaded bolts corresponding to the three screw holes;
• and
• when in use:
• gas enters the hollow half shaft of the main shaft via the gas inlet pipe and the second end cover;
• and
• the nozzle rotator rotates synchronously along with the main shaft, and sprays the gas through the first row of nozzles and the second row of nozzles into corresponding oscillation receiving tubes.