CN212542070U - Improved condenser for liquid helium volatilization-free superconducting magnet - Google Patents
Improved condenser for liquid helium volatilization-free superconducting magnet Download PDFInfo
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- CN212542070U CN212542070U CN202021443143.7U CN202021443143U CN212542070U CN 212542070 U CN212542070 U CN 212542070U CN 202021443143 U CN202021443143 U CN 202021443143U CN 212542070 U CN212542070 U CN 212542070U
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Abstract
The utility model discloses a condenser for liquid helium volatilization-type superconducting magnet non-liquid helium volatilization improvement, which comprises a liquid helium volatilization-type superconducting magnet (1) and a condenser arranged on the liquid helium volatilization-type superconducting magnet, wherein the liquid helium volatilization-type superconducting magnet comprises a liquid helium cavity (2), a liquid nitrogen cavity (3) and a heat insulating layer (4), the liquid helium cavity is provided with the liquid nitrogen cavity (3) at the outer side, and the heat insulating layer (4) is arranged at the outer side of the liquid nitrogen cavity (3); the condenser comprises a liquid helium condensation cavity (5), a secondary cold head (6), a condenser vacuum cavity (7), a primary cold head (8), a cold head (9), a cold guide belt (10), a vacuum pumping port (11), a liquid nitrogen condensation cavity (12) and a liquid helium backflow cavity tube (13), wherein the liquid helium condensation cavity (5) and the liquid nitrogen condensation cavity (12) are arranged in the condenser vacuum cavity, and the liquid helium condensation cavity is communicated with the liquid helium cavity (2). The utility model discloses reduce liquid helium of liquid helium formula superconducting magnet and volatilize, reach and have no liquid helium to volatilize.
Description
Technical Field
The utility model relates to a superconducting magnet technical field, concretely relates to be used for liquid helium formula superconducting magnet that volatilizees to have liquid helium to volatilize modified condenser.
Background
The liquid helium volatile superconducting magnet is formed by placing a superconducting coil in a liquid helium cavity so as to meet the condition of a superconductor. The liquid helium cavity is arranged outside the liquid nitrogen cavity and has the function of reducing volatilization of the liquid helium. And a heat insulating layer is arranged outside the liquid nitrogen cavity body, so that the thermal contact and the heat radiation of the magnet and the outside are reduced. The heat insulation layer of the liquid helium volatilizing type superconducting magnet is used for protecting the superconducting magnet, so that heat exchange of the magnet cannot be absolutely prevented, and liquid nitrogen and liquid helium can be volatilized continuously in the using process. Liquid nitrogen and helium are replenished after use for a fixed period.
With the progress of science and technology, a superconducting magnet without liquid helium volatilization appears, and the working principle of the superconducting magnet is that the refrigeration power generated by the working of a cold head and a helium compressor is balanced with the heat leakage of the magnet, so that the volatilization of liquid helium and even the volatilization of the liquid helium are reduced. The price of liquid helium is very expensive and is increasing as the supply and demand for liquid helium varies. In order to reduce the operating cost, the liquid helium volatile magnet is required to be improved into an improved condenser without liquid helium volatilization.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the deficiencies existing in the prior art, and providing a condenser for liquid helium volatilization type superconducting magnet without liquid helium volatilization improvement.
In order to achieve the purpose of the utility model, the utility model provides a technical scheme as follows: a condenser for improving liquid helium volatilization-free type superconducting magnet comprises a liquid helium volatilization type superconducting magnet and a condenser arranged on the liquid helium volatilization type superconducting magnet, wherein the liquid helium volatilization type superconducting magnet comprises a liquid helium cavity, a liquid nitrogen cavity and a heat insulation layer, the liquid helium cavity is arranged on the outer side of the liquid helium cavity, and the heat insulation layer is arranged on the outer side of the liquid helium cavity; the condenser comprises a liquid helium condensation cavity, a secondary cold head, a condenser vacuum cavity, a primary cold head, a cold guide belt, a vacuum pumping port, a liquid nitrogen condensation cavity and a liquid helium backflow cavity tube, wherein the liquid helium condensation cavity and the liquid nitrogen condensation cavity are arranged in the condenser vacuum cavity, the liquid helium condensation cavity is communicated with the liquid helium cavity through the liquid helium backflow cavity tube arranged on the outer side of the condenser, the cold head and the vacuum pumping port are further arranged on the condenser vacuum cavity, the primary cold head is arranged in the middle of the cold head, the secondary cold head is arranged at one end of the cold head, and the primary cold head and the secondary cold head are connected with the liquid helium condensation cavity through the cold guide belt.
Preferably, the condenser is a vacuum container and is made of stainless steel materials.
Based on the technical scheme, compared with the prior art, the utility model have following technical advantage:
the utility model adopts the improved condenser for the liquid helium volatilization-free superconducting magnet, which reduces the volatilization of the liquid helium volatilization-type superconducting magnet and achieves no volatilization of the liquid helium; the adopted condenser is used for respectively cooling the liquid helium and the liquid nitrogen volatilized by the liquid helium volatilizing type superconducting magnet; the vacuum treatment is carried out through the vacuum pumping port to achieve the functions of reducing heat conduction and radiation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. liquid helium volatile superconducting magnet, 2, liquid helium cavity, 3, liquid nitrogen cavity, 4, heat insulating layer, 5, liquid helium condensation cavity, 6, secondary cold head, 7, condenser vacuum cavity, 8, primary cold head, 9, cold head, 10, cold conduction band, 11, vacuum pumping port, 12, liquid nitrogen condensation cavity, 13 and liquid nitrogen backflow cavity pipe.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1, a condenser for improving liquid helium volatilization-free performance of a liquid helium volatile superconducting magnet comprises a liquid helium volatile superconducting magnet 1 and a condenser arranged on the liquid helium volatile superconducting magnet, wherein the liquid helium volatile superconducting magnet 1 comprises a liquid helium cavity 2, a liquid nitrogen cavity 3 and a heat insulating layer 4, the liquid helium cavity 3 is arranged outside the liquid helium cavity 2, and the heat insulating layer 4 is arranged outside the liquid helium cavity 3; the condenser comprises a liquid helium condensation cavity 5, a second-stage cold head 6, a condenser vacuum cavity 7, a first-stage cold head 8, a cold head 9, a cold guide belt 10, a vacuum pumping port 11, a liquid nitrogen condensation cavity 12 and a liquid helium backflow cavity tube 13, the liquid helium condensation cavity 5 and the liquid nitrogen condensation cavity 12 are arranged in the condenser vacuum cavity 7, the liquid helium condensation cavity 5 is communicated with the liquid helium cavity 2, the liquid helium condensation cavity 12 is communicated with the liquid helium cavity 3 through the liquid helium backflow cavity tube 13 arranged on the outer side of the condenser, the condenser vacuum cavity 7 is further provided with the cold head 9 and the vacuum pumping port 11, the middle of the cold head 9 is provided with the first-stage cold head 8, one end of the cold head 9 is provided with the second-stage cold head 6, and the first-stage cold head 8 and the second-stage cold head 6 are both connected with the liquid helium condensation cavity 12.
The condenser is a vacuum container and is made of stainless steel materials.
The working process is as follows:
liquid helium in the liquid helium cavity 2 is heated to become helium gas, the helium gas is volatilized upwards into a liquid helium condensation cavity 5 of the condenser, and the helium gas is changed into the liquid helium again to return to the liquid helium cavity 2 by the refrigerating capacity generated by the working of a secondary cold head 6 of the cold head 9;
after the liquid nitrogen in the liquid nitrogen cavity 3 is changed into the nitrogen gas, the nitrogen gas is volatilized upwards to a liquid nitrogen condensation cavity 12 of the condenser, the refrigerating capacity generated by the primary cold head 8 is transmitted to the liquid nitrogen condensation cavity 12 through the cold guide belt 10, and the nitrogen gas in the liquid nitrogen is changed into the liquid nitrogen and flows back to the liquid nitrogen cavity 3 through a liquid nitrogen backflow cavity pipe 13.
The foregoing is illustrative and explanatory of the invention and is not intended to limit the advantages attainable thereby, and it is within the scope of the present application to practice the invention with simple modifications to the structure and/or one or more of the advantages achieved in some embodiments.
Claims (2)
1. A condenser for liquid helium volatilization-free superconducting magnet improvement is characterized in that: the liquid helium volatilizing superconducting magnet comprises a liquid helium volatilizing superconducting magnet (1) and a condenser arranged on the liquid helium volatilizing superconducting magnet, wherein the liquid helium volatilizing superconducting magnet (1) comprises a liquid helium cavity (2), a liquid nitrogen cavity (3) and a heat insulating layer (4), the liquid nitrogen cavity (3) is arranged on the outer side of the liquid helium cavity (2), and the heat insulating layer (4) is arranged on the outer side of the liquid helium cavity (3); the condenser comprises a liquid helium condensation cavity (5), a secondary cold head (6), a condenser vacuum cavity (7), a primary cold head (8), a cold head (9), a cold guide belt (10), a vacuum pumping port (11), a liquid nitrogen condensation cavity (12) and a liquid helium backflow cavity tube (13), wherein the condenser vacuum cavity (7) is internally provided with the liquid helium condensation cavity (5) and the liquid nitrogen condensation cavity (12), the liquid helium condensation cavity (5) is communicated with the liquid helium cavity (2), the liquid nitrogen condensation cavity (12) is communicated with the liquid helium cavity (3) through the liquid helium backflow cavity tube (13) arranged at the outer side of the condenser, the condenser vacuum cavity (7) is further provided with the cold head (9) and the vacuum pumping port (11), the middle part of the cold head (9) is provided with the primary cold head (8), one end of the cold head (9) is provided with the secondary cold head (6), and the primary cold head (8), The secondary cold heads (6) are connected with a liquid nitrogen condensation cavity (12) through a cold guide belt (10).
2. The improved condenser for liquid helium volatilization-free superconducting magnet of claim 1, wherein: the condenser is a vacuum container and is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021443143.7U CN212542070U (en) | 2020-07-21 | 2020-07-21 | Improved condenser for liquid helium volatilization-free superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021443143.7U CN212542070U (en) | 2020-07-21 | 2020-07-21 | Improved condenser for liquid helium volatilization-free superconducting magnet |
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| CN212542070U true CN212542070U (en) | 2021-02-12 |
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| CN202021443143.7U Active CN212542070U (en) | 2020-07-21 | 2020-07-21 | Improved condenser for liquid helium volatilization-free superconducting magnet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284691A (en) * | 2021-05-08 | 2021-08-20 | 中国科学院合肥物质科学研究院 | Zero-evaporation superconducting magnet system capable of saving liquid helium |
| CN114068132A (en) * | 2021-10-15 | 2022-02-18 | 江苏美时医疗技术有限公司 | Liquid helium circulation-based nuclear magnetic resonance ultrahigh field magnet circulation refrigeration device |
-
2020
- 2020-07-21 CN CN202021443143.7U patent/CN212542070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284691A (en) * | 2021-05-08 | 2021-08-20 | 中国科学院合肥物质科学研究院 | Zero-evaporation superconducting magnet system capable of saving liquid helium |
| CN114068132A (en) * | 2021-10-15 | 2022-02-18 | 江苏美时医疗技术有限公司 | Liquid helium circulation-based nuclear magnetic resonance ultrahigh field magnet circulation refrigeration device |
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