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CN-224200824-U - Low-flow high-temperature molten salt pump

CN224200824UCN 224200824 UCN224200824 UCN 224200824UCN-224200824-U

Abstract

The utility model relates to the technical field of molten salt pumps and discloses a low-flow high-temperature molten salt pump, which comprises a pump body, wherein a pump shaft is connected in the pump body in a sliding manner, a partition assembly is arranged on the outer wall of the pump shaft, the partition assembly comprises a hollow ring I and a hollow ring II, the hollow ring I and the hollow ring II are connected on the outer wall of the pump shaft in a sliding manner, heat conducting oil is filled in the hollow ring I and the hollow ring II, a connecting block is fixedly connected on one side of the hollow ring I, a liquid storage bin is fixedly connected on one side of the connecting block, and bilaterally symmetrical dismounting assemblies are arranged on the side walls of the hollow ring I and the hollow ring II. According to the utility model, firstly, the operator fills the heat conduction oil into the hollow ring I and the hollow ring II, and the heat conduction oil is circulated through the output end and the input end of the circulating pump, so that the effect of isolating heat transfer is achieved, the problems of insulation aging and lubrication failure caused by overheating of the motor are solved, and the running stability of equipment is improved.

Inventors

  • ZHANG ZHENSHUI
  • DAI ZIMING
  • ZHOU XIAOPENG

Assignees

  • 济南三科泵业有限公司

Dates

Publication Date
20260505
Application Date
20250613

Claims (8)

  1. 1. The low-flow high-temperature molten salt pump comprises a pump body (1) and is characterized in that a pump shaft (2) is connected inside the pump body (1) in a sliding manner, and a partition assembly is arranged on the outer wall of the pump shaft (2); The partition assembly comprises a first hollow ring (3) and a second hollow ring (4), the first hollow ring (3) and the second hollow ring (4) are connected to the outer wall of the pump shaft (2) in a sliding mode, heat conduction oil is filled into the first hollow ring (3) and the second hollow ring (4), a connecting block (5) is fixedly connected to one side of the first hollow ring (3), a liquid storage bin (6) is fixedly connected to one side of the connecting block (5), a micro fan (7) is arranged on one side of the liquid storage bin (6), a circulating pump (8) is fixedly connected to the top of the liquid storage bin (6), a connecting barrel (9) is fixedly connected to the top of the liquid storage bin (6), the output end of the circulating pump (8) is fixedly connected to the inner portion of the first hollow ring (3), a connecting pipe (10) is fixedly connected to the inner portion of the connecting barrel (9), and the hollow ring (3) and the hollow ring (4) are symmetrically arranged.
  2. 2. The low-flow high-temperature molten salt pump of claim 1, wherein the dismounting assembly which is bilaterally symmetrical comprises a first fixed block (11) and a second fixed block (12), one side of the first fixed block (11) is fixedly connected to the side wall of the second hollow ring (4), and one side of the second fixed block (12) is fixedly connected to the side wall of the first hollow ring (3).
  3. 3. The low-flow high-temperature molten salt pump of claim 2, wherein a sealing ring (13) is fixedly connected to one side of the hollow ring I (3), and one side of the sealing ring (13) is attached to one side of the hollow ring II (4).
  4. 4. The low-flow high-temperature molten salt pump of claim 3, wherein the second fixed block (12) is internally provided with a clamping groove (14), and the first fixed block (11) is internally fixedly connected with a supporting block (15).
  5. 5. The low-flow high-temperature molten salt pump of claim 4, wherein one side of the supporting block (15) is fixedly connected with a supporting shaft (16), and the outer wall of the supporting shaft (16) is in sliding connection with the inner wall of the second fixed block (12).
  6. 6. The low-flow high-temperature molten salt pump of claim 5, wherein a transmission shaft (17) is connected inside the supporting block (15) in a sliding mode, and a pull block (18) is fixedly connected to one end of the transmission shaft (17).
  7. 7. The low-flow high-temperature molten salt pump of claim 6, wherein a conical block (19) is fixedly connected to the other end of the transmission shaft (17), a limiting ball (20) is connected inside the support shaft (16) in a sliding mode, and the limiting ball (20) is in contact with the outer wall of the conical block (19).
  8. 8. The low-flow high-temperature molten salt pump of claim 7, wherein a limiting disc (21) is fixedly connected to the bottom end of the conical block (19), a spring (22) is arranged on the outer wall of the transmission shaft (17), one end of the spring (22) is fixedly connected to the inner wall of the supporting block (15), and the other end of the spring is fixedly connected to the side wall of the conical block (19).

Description

Low-flow high-temperature molten salt pump Technical Field The utility model relates to the technical field of molten salt pumps, in particular to a low-flow high-temperature molten salt pump. Background The high-temperature molten salt pump is key equipment for conveying high-temperature molten salt, and is widely applied to the fields of photo-thermal power generation, nuclear energy systems, chemical processes and the like, wherein the low-flow high-temperature molten salt pump plays an important role in scenes such as precise temperature control, intermittent operation or high-purity medium conveying, and the pump needs to be specially designed in the aspects of material, sealing, thermal management and the like due to the high temperature, strong corrosiveness and easy solidification characteristics of the molten salt so as to ensure long-term stable operation. At present, a traditional high-temperature molten salt pump generally adopts a single-shell centrifugal structure, a pump body and an impeller are manufactured by adopting heat-resistant alloy so as to resist high-temperature corrosion, a motor and a pump shaft are directly connected through a rigid coupling, high-temperature mechanical seal or filler seal is relied on to prevent molten salt leakage, a bearing system is mostly used for lubricating high-temperature lubricating grease or oil and reducing temperature rise through natural heat dissipation or external air cooling, and in addition, a heat preservation layer is additionally arranged outside a pump shell in a part of design so as to reduce heat loss and maintain molten salt fluidity. However, the structure has a remarkable defect that high-temperature heat is continuously conducted to the motor end through the metal pump shaft, so that the temperature of a motor winding and a bearing exceeds the standard, the motor can accelerate insulation aging and lubrication failure after running at high temperature for a long time, even magnet demagnetization is caused, the service life of equipment is seriously shortened, and the fault risk is increased. Disclosure of utility model In order to make up for the defects, the utility model provides a low-flow high-temperature molten salt pump, which aims to solve the problem of motor overheating caused by pump shaft heat conduction in the existing high-temperature molten salt pump, thereby prolonging the service life of the motor and improving the reliability of a system. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The low-flow high-temperature molten salt pump comprises a pump body, wherein a pump shaft is connected inside the pump body in a sliding manner, and a partition assembly is arranged on the outer wall of the pump shaft; The partition assembly comprises a first hollow ring and a second hollow ring, the first hollow ring and the second hollow ring are both in sliding connection with the outer wall of the pump shaft, heat conduction oil is filled in the first hollow ring and the second hollow ring, one side of the first hollow ring is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a liquid storage bin, one side of the liquid storage bin is provided with a micro fan, the top of the liquid storage bin is fixedly connected with a circulating pump, the top of the liquid storage bin is fixedly connected with a connecting barrel, the input end of the circulating pump is fixedly connected with the inner part of the liquid storage bin, the output end of the circulating pump is fixedly connected with the inner part of the first hollow ring, a connecting pipe is fixedly connected with the inner part of the first hollow ring, and the two side walls of the first hollow ring are provided with bilaterally symmetrical dismounting assemblies. As a further description of the above technical solution: The disassembly and assembly comprises a first fixed block and a second fixed block, wherein one side of the first fixed block is fixedly connected with the two side walls of the hollow ring, and one side of the second fixed block is fixedly connected with the one side wall of the hollow ring. As a further description of the above technical solution: One side of the hollow ring I is fixedly connected with a sealing ring, and one side of the sealing ring is attached to one side of the hollow ring II. As a further description of the above technical solution: the clamping groove is formed in the second fixing block, and the supporting block is fixedly connected to the first fixing block. As a further description of the above technical solution: and one side of the supporting block is fixedly connected with a supporting shaft, and the outer wall of the supporting shaft is in sliding connection with the two inner walls of the fixed block. As a further description of the above technical solution: The inside sliding connection of supporting shoe has the tran