Compound refrigeration system for heat pipe of supergravity centrifuge
The present application provides a compound refrigeration system for a heat pipe of a supergravity centrifuge. The compound refrigeration system for the heat pipe of the supergravity centrifuge includes a rotor rotating around a vertical axis, an experimental cabin covering outside the rotor, and a corresponding cooling system. The rotor is provided with a shaft part which is in running fit with the experimental cabin. The shaft part is provided with a shaft top end located outside the experimental cabin. The cooling system includes a liquid cooling device and an evaporative cooling device. The liquid cooling device comprises a refrigeration source, and a first cooling medium circulating pipeline communicated with the refrigeration source and thermally coupled with a cabin wall of the experimental cabin. The evaporative cooling device includes a condensation chamber arranged outside the experimental cabin, and a heat pipe radiator thermally coupled with the rotor.
1 . A compound refrigeration system for a heat pipe of a supergravity centrifuge, comprising a rotor rotating around a vertical axis, an experimental cabin covering outside the rotor, and a corresponding cooling system, wherein the rotor is provided with a shaft part which is in running fit with the experimental cabin; the shaft part is provided with a shaft top end located outside the experimental cabin; the cooling system comprises a liquid cooling device and an evaporative cooling device;
the liquid cooling device comprises a refrigeration source, and a first cooling medium circulating pipeline communicated with the refrigeration source and thermally coupled with a cabin wall of the experimental cabin;
the evaporative cooling device comprises a condensation chamber arranged outside the experimental cabin, and a heat pipe radiator thermally coupled with the rotor; a heat absorption end of the heat pipe radiator is fixed to the rotor; and a radiating end of the heat pipe radiator extends into the condensation chamber through the shaft top end.
2 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 1 , wherein the liquid cooling device further comprises a second cooling medium circulating pipe thermally coupled with the condensation chamber.
3 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 1 , wherein the condensation chamber is located above the shaft top end to enable condensate in the condensation chamber to flow into the shaft top end by the gravity.
4 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 3 , wherein the heat pipe radiator is fixed to an outer side of the rotor; and the condensate flows in the heat pipe radiator in two ways to form a further cooling medium circulating pipeline.
5 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 4 , wherein the rotor is of a symmetrical structure relative to the vertical axis thereof and has a high-temperature end far away from the vertical axis; the heat pipe radiator comprises:
a first pipeline, vertically extending in the shaft part, and an upper end of the first pipeline being a radiating end; and
a second pipeline, one end of the second pipeline being communicated with a lower end of the first pipeline, and the other end of the second pipeline being a heat absorption end and extending to the high-temperature end.
6 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 5 , wherein the second pipeline comprises:
a vertical section, close to a surface of the high-temperature end, and a lower end of the vertical section being the heat absorption end; and
an inclined section, one end of the inclined section being communicated with a bottom end of the first pipeline, and a second end of the inclined section being communicated with an upper end of the vertical section.
7 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 6 , wherein the upper end of the vertical section is higher than the position of a bottom end of the first pipeline.
8 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 1 , wherein the cooling system further comprises a vacuum pump; and the vacuum pump is connected to the experimental cabin through a vacuum pipe to adjust a vacuum degree in the experimental cabin.
9 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 2 , wherein the cooling system further comprises a cold storage tank communicated with the first cooling medium circulating pipeline, and used to store a cooling medium produced by the refrigeration source.
10 . The compound refrigeration system for the heat pipe of the supergravity centrifuge according to claim 1 , wherein the first cooling medium circulating pipe penetrates through a side wall of the experimental cabin.