Patent ID: 11944986
Assignee: ZHEJIANG UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A device for reducing wind resistance power, comprising: a cylindrical shell (10), a top sealing plate (20) whose bottom is equipped with a top semicircular tube cooling plate (41), a bottom sealing plate (7), and a vibration isolation gasket (18), which all together form a centrifuge chamber; wherein:
a high-speed rotor system (30) is enclosed in the centrifuge chamber; a semicircular tube cylindrical cooling device (11) is installed between an internal side of the cylindrical shell (10) and the high-speed rotor system (30); a bottom end of a main shaft (12) of the high-speed rotor system (30) extends out of the bottom sealing plate (7) after passing through a bottom bearing sealing cover (4) and a bottom bearing system (3), and then is sequentially connected to a coupling (2) and a motor (1); the main shaft (12) and the bottom bearing sealing cover (4) are sealed by a main shaft dynamic seal; an upper end of the main shaft (12) of the high-speed rotor system (30) passes through the top semicircular tube cooling plate (41), the top sealing plate (20), an top bearing system (23) and a top bearing sealing cover (22), and then is connected to an instrument compartment (24); the main shaft (12) of the high-speed rotor system (30) and the top sealing plate (20) are sealed by another main shaft dynamic seal; the top bearing sealing cover (22) and the bottom bearing sealing cover (4) are fixed to respective bearing seats by bolts (21);
the top bearing system (23) is located in a circular support ring (35) of a top bearing system support device (19), and the circular support ring (35) is rigidly connected to a connection pad (49) through a plurality of top bearing support beams (34); the connection pad (49) is fixed on side concrete (8);
each of two external ends of a centrifuge rotating arm (14) of the high-speed rotor system (30) is equipped with a hanging basket (13); the top semicircular tube cooling plate (41) has a serpentine semicircular tube (26) located right above the hanging basket (13); a plurality of top center return helium gas inlet holes (46) are provided at a center of the top semicircular tube cooling plate (41);
a coolant inlet pipe (28), a coolant outlet pipe (43) and a side door (37) are provided on a sidewall of the cylindrical shell (10); the coolant inlet pipe (28) communicates with an upper liquid collecting pipe (16); the upper liquid collecting pipe (16) is connected through a coolant distribution tube (27) to a top coolant inlet (39) of the top semicircular tube cooling plate (41) and atop liquid inlet (52) of the semicircular tube cylindrical cooling device (11); the coolant outlet pipe (43) communicates with a lower liquid collecting pipe (9); the lower liquid collecting pipe (9) is connected through a coolant collecting pipe (29) to a top coolant outlet (40) of the top semicircular tube cooling plate (41) and a bottom liquid outlet (53) of the semicircular tube cylindrical cooling device (11); the upper liquid collecting pipe (16) is installed on an upper liquid collecting pipe bracket (15), and the lower liquid collecting pipe (9) is installed on a lower liquid collecting pipe bracket (48);
a bottom end of the semicircular tube cylindrical cooling device (11) is connected to a corner transition plate (44), and a bottom gap (45) with a height of no more than 10 mm is reserved between the corner transition plate (44) and the bottom sealing plate (7); a helium gas inside the centrifuge chamber passes through the bottom gap (45) from a high wind pressure area at a bottom of the hanging basket (13), and then sequentially passes through the semicircular tube cylindrical cooling device (11) and the top semicircular tube cooling plate (41); after heat exchange with the serpentine semicircular tube (26), the helium gas returns to the centrifuge chamber through the top center return helium gas inlet holes (46); after being mixed with a high temperature helium gas, the helium gas is pushed into the semicircular tube cylindrical cooling device (11) by a high-speed centrifuge rotor to complete a cycle;
a helium gas storage tank (33) is connected to an automatic control valve (32) through a pipe, and then connected to a plurality of helium gas inlet pipes (31) through the pipe; after passing through the automatic control valve (32), the helium gas enters the centrifuge chamber through helium gas outlets (38) on the helium gas inlet pipes (31).