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CN-224229740-U - Liquid nitrogen tank cooling device

CN224229740UCN 224229740 UCN224229740 UCN 224229740UCN-224229740-U

Abstract

The utility model discloses a liquid nitrogen tank cooling device. The utility model relates to a liquid nitrogen filling device, which comprises a positioning frame, a constraint part, a filling part, a conveying pipe, a transmission assembly, an adjusting part and a pressure relief unit, wherein the constraint part comprises a limiting table which is arranged on the positioning frame, the filling part comprises an adjusting rod which is vertically and slidably arranged in the limiting table, the bottom of the adjusting rod stretches into a tank body, the conveying pipe is vertically arranged in the adjusting rod in a penetrating manner and is in rotary connection with the adjusting rod, the bottom of the conveying pipe is provided with a spray head, the transmission assembly is arranged in the adjusting rod and is connected with the conveying pipe, the adjusting part is arranged on the positioning frame and is connected with the adjusting rod, and the pressure relief unit is arranged in the limiting table.

Inventors

  • FANG XIUJU
  • Yue Zuyu

Assignees

  • 中科美菱低温科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (5)

  1. 1. The liquid nitrogen tank cooling device is characterized by comprising a positioning frame (1); The constraint component (2) comprises a limiting table (21) which is arranged on the positioning frame (1) and is positioned above the opening of the tank body (01) and used for blocking the opening of the tank body (01); The filling component (3) comprises an adjusting rod (31) which vertically slides through the limiting table (21), and the bottom of the filling component extends into the inner cavity of the tank body (01); The conveying pipe (32) vertically penetrates through the adjusting rod (31) and is connected with the adjusting rod in a rotating way, and the bottom of the conveying pipe extends into the inner cavity of the tank body (01) and is connected with a spray head (34); The transmission assembly (33) is arranged in the adjusting rod (31), one end of the transmission assembly is connected with the conveying pipe (32) and is used for driving the conveying pipe (32) to rotate; The adjusting component (4) is arranged on the positioning frame (1), one end of the adjusting component is connected with the adjusting rod (31) and is used for driving the adjusting rod (31) to vertically lift and move; and the pressure relief unit is arranged in the limiting table (21) and is used for discharging gas in the tank.
  2. 2. The liquid nitrogen tank cooling device according to claim 1, wherein a cavity (311) is formed at the extending end of the adjusting rod (31), and the conveying pipe (32) penetrates through the cavity (311); The transmission assembly (33) comprises; A first gear (331) coaxially arranged on the conveying pipe (32) and located in the chamber (311); The first power unit (332) is arranged in the cavity (311) and positioned at one side of the conveying pipe (32), and a second gear (333) meshed with the first gear (331) is arranged on the moving end of the first power unit.
  3. 3. The liquid nitrogen tank cooling device according to claim 1, wherein a vertical rack (5) is arranged on one side of the adjusting rod (31); the adjusting part (4) comprises; The second power unit (41) is arranged on the positioning frame (1), and a third gear (42) meshed with the rack (5) is arranged on the moving end of the second power unit.
  4. 4. The liquid nitrogen tank cooling device according to claim 1, wherein the limiting table (21) is of a telescopic structure; The constraining member (2) further comprises: The lifting handle (22) is vertically and slidably inserted into the limiting table (21) and connected with the telescopic end of the limiting table, and the top of the lifting handle (22) extends out of the limiting table (21); And the elastic unit (23) is arranged between the fixed end and the telescopic end of the limiting table (21) and is used for applying vertical downward pressure to the telescopic end of the limiting table.
  5. 5. The liquid nitrogen tank cooling device according to claim 1, wherein a decompression flow passage (211) is arranged at the telescopic end of the limiting table (21); The pressure relief unit comprises a one-way valve (6) arranged in the pressure relief flow passage (211) and is used for discharging the gas in the tank to the outside.

Description

Liquid nitrogen tank cooling device Technical Field The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank cooling device. Background The liquid nitrogen tank is low-temperature storage equipment for realizing long-term preservation of biological samples by utilizing the extremely low temperature characteristic of liquid nitrogen, and has the core function of maintaining the low-temperature environment of the liquid nitrogen through a vacuum heat insulation technology, and is commonly used in the technical fields of biomedicine, aerospace industry and the like. In the prior art, liquid nitrogen is directly poured downwards from an upper end opening of a liquid nitrogen tank to be supplemented, after the liquid nitrogen is supplemented, the liquid nitrogen tank is required to be stood for a period of time, so that the temperature of the inner wall of the liquid nitrogen tank is reduced to a certain required temperature, a sample to be frozen is placed into the liquid nitrogen tank, the freezing waiting time is long, and the cooling efficiency is limited. Therefore, a liquid nitrogen tank cooling device capable of reducing freezing waiting time and improving cooling efficiency is provided for solving the problems. Disclosure of utility model The utility model aims to overcome the defects in the prior art and provide a liquid nitrogen tank cooling device which can improve the cooling efficiency. In order to solve the technical problems, the utility model adopts the following technical scheme that the liquid nitrogen tank cooling device comprises a positioning frame; The restraining component comprises a limiting table, is arranged on the positioning frame, is positioned above the opening of the tank body and is used for blocking the opening of the tank body; The filling component comprises an adjusting rod, is vertically and slidably arranged in the limiting table, and the bottom of the filling component extends into the inner cavity of the tank body; The conveying pipe vertically penetrates through the adjusting rod and is connected with the adjusting rod in a rotating way, and the bottom of the conveying pipe extends into the cavity in the tank body and is connected with a spray head; The transmission assembly is arranged in the adjusting rod, one end of the transmission assembly is connected with the conveying pipe and used for driving the conveying pipe to rotate; The adjusting component is arranged on the positioning frame, one end of the adjusting component is connected with the adjusting rod and is used for driving the adjusting rod to vertically lift and move; The pressure relief unit is arranged in the limiting table and used for discharging gas in the tank. Further, a cavity is formed in the extending end of the adjusting rod, and the conveying pipe penetrates through the cavity; the transmission assembly includes; The first gear is coaxially arranged on the conveying pipe and positioned in the cavity; The first power unit is arranged in the cavity and positioned at one side of the conveying pipe, and a second gear meshed with the first gear is arranged on the moving end of the first power unit. Further, a vertical rack is arranged on one side of the adjusting rod; the adjusting part includes; The second power unit is arranged on the positioning frame, and a third gear meshed with the rack is arranged on the moving end of the second power unit. Furthermore, the limiting table is of a telescopic structure; The constraining member further includes: The lifting handle is vertically and slidably inserted into the limiting table and connected with the telescopic end of the limiting table, and the top of the lifting handle extends out of the limiting table; And the elastic unit is arranged between the fixed end and the telescopic end of the limiting table and is used for applying vertical downward pressure to the telescopic end of the limiting table. Further, a pressure release runner is arranged at the telescopic end of the limiting table; The pressure relief unit comprises a one-way valve arranged in the pressure relief flow passage and is used for discharging the gas in the tank to the outside. The beneficial effects of the utility model are as follows: According to the utility model, after the opening of the tank body is plugged by the filling component and the regulating component, the regulating component drives the spray head to move to a preset position through the regulating rod, then liquid nitrogen is conveyed into the spray head through the conveying pipe, and meanwhile, the transmission component drives the conveying pipe to rotate so that the liquid nitrogen is sprayed in the tank body in a rotating way, so that the liquid nitrogen is sprayed to the inner wall of the tank body uniformly, the inner wall of the tank body is cooled at the first time, then the liquid nitrogen flows downwards and is accumulated, the inner wall of the tank