	US 12,226,785 B2
	Vacuum chamber structure of ultra-high gravity geotechnical centrifuge device
Chuanxiang Zheng, Zhejiang (CN); Weian Lin, Zhejiang (CN); Bingbing Chen, Zhejiang (CN); Jianqun Jiang, Zhejiang (CN); Yunmin Chen, Zhejiang (CN); Liming Tang, Zhejiang (CN); Jiao Lin, Zhejiang (CN); and Danyang Dou, Zhejiang (CN)
Assigned to ZHEJIANG UNIVERSITY, Zhejiang (CN)
Appl. No. 16/981,691
Filed by ZHEJIANG UNIVERSITY, Zhejiang (CN)
PCT Filed May 31, 2019, PCT No. PCT/CN2019/089466 § 371(c)(1), (2) Date Sep. 16, 2020, PCT Pub. No. WO2020/220428, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 201910350086.3 (CN), filed on Apr. 28, 2019.
Prior Publication US 2023/0102671 A1, Mar. 30, 2023
Int. Cl. B04B 15/02 (2006.01)

CPC B04B 15/02 (2013.01)

7 Claims

1. A vacuum chamber structure of an ultra-high gravity geotechnical centrifuge device, comprising: a cylindrical shell (10), a convex head (19), a bottom head (7), a lower bearing sealing cover (4), and a vacuum pressure-bearing chamber formed by sealing a top cylindrical cylinder (24) and an upper sealing plate (22) with a first group of sealing rings (231) and a second group of sealing rings (232);

wherein a high-speed rotor system (46) is enclosed in the vacuum pressure-bearing chamber, and a cylindrical cooling device (11) is installed between an internal side of the cylindrical shell (10) and the high-speed rotor system (46), and a lower end of the main shaft (12) of the high-speed rotor system (46) extends through the lower bearing sealing cover (4) and a lower bearing system (3), extends out of the bottom head (7), and respectively connects a coupling (2) and a motor (1), in such a manner that the lower bearing system (3), the coupling (2) and the motor (1) are isolated from the vacuum chamber structure;

wherein an upper end of the main shaft (12) of the high-speed rotor system (46) passes through the upper sealing plate (22) and an upper bearing system (18) to connect an instrument compartment (25) installed in the top cylindrical cylinder (24);

in such a manner that the upper bearing system (18) and the instrument compartment (25) in the top cylindrical cylinder (24) at the center of the convex head (19) are isolated from the vacuum chamber structure;

wherein an upper bearing system support device (26) is a radial support structure formed by an upper bearing support ring (33) and multiple beams (32); a first end of each of the multiple beams (32) is connected to the upper bearing support ring (33), and a second end of each of the multiple beams (32) passes through the cylindrical shell (10) and is connected to a connecting backing plate (45); the connecting backing plate (45) is then connected to a side concrete (8), the upper bearing system (18) is installed in the upper bearing support ring (33); the first end of each of the multiple beams (32) is surrounded by a beam vibration isolation device (30), a cross-opening of a periphery of the second end of each of the multiple beams (32) and the cylindrical shell (10) is a clearance fit with beam passing, each of the multiple beams (32) is connected in seal with the cylindrical shell (10) via the beam vibration isolation device (30) and a first group of gasket (48);

wherein hanging baskets (13) are respectively provided on both sides of a rotating arm (14) of the centrifuge in the high-speed rotor system (46), and an annular cooling device (27) is provided on each of the multiple beams (32) directly above the hanging basket (13);

the cylindrical shell (10) is provided with multiple side wall connection pipes (51) and a side door (52); the convex head (19) is provided with a vacuum exhaust pipe (21), a lifting hole (29), an air intake pipe (34), a vacuum recompression pipe (35); and a spare connection pipe (53);

the cylindrical cooling device (11) and the annular cooling device (27) are connected and communicated with an upper liquid collecting pipe (28) and a lower liquid collecting pipe (9), and the upper liquid collecting pipe (28) passes through the cylindrical shell (10) to connect a low-temperature outlet of a refrigerator, and the lower liquid collecting pipe (9) passes through the cylindrical shell (10) to connect a return water inlet of the refrigerator; and a side door (52) is opened on a side of the cylindrical shell (10).