Liquid nitrogen cooling sensor device container and liquid nitrogen cooling sensor device

Patent metadata

Field	Value
Publication number	US-10113695-B2
Application number	US-201214367179-A
Country	US
Kind code	B2
Filing date	Nov 5, 2012
Priority date	Dec 20, 2011
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

The invention relates to a liquid nitrogen cooling sensor device container and liquid nitrogen cooling sensor equipment, and effectively reduces low-frequency noise while maintaining the ease with which a probe can be inserted in and removed from liquid nitrogen. Said invention comprises: a liquid nitrogen containing insulating container that contains liquid nitrogen; a sensor fixing member which has a distal end portion to which a sensor operating at a temperature of the liquid nitrogen is attached; and a fixing buffer member which is for fixing the sensor fixing member to the liquid nitrogen containing insulating container, wherein the fixing buffer member exerts a buffering effect in the liquid nitrogen.

First claim

The invention claimed is:

1. A liquid nitrogen cooling nitrogen sensor device container comprising:
a liquid nitrogen containing insulating container which contains liquid nitrogen;
a sensor fixing member which has a distal end portion to which a sensor operating at a temperature of the liquid nitrogen is attached; and
a fixing buffer member configured to be compressed to fix the sensor fixing member to the liquid nitrogen containing insulating container, wherein
the fixing buffer member absorbs vibration of the sensor fixing member caused by external factors or by bubbles generated as the liquid nitrogen evaporates, and
wherein the fixing buffer member is configured to be selectively detached and attached to the nitrogen containing insulating container.

2. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is disposed to be in contact with at least a bottom surface of the liquid nitrogen containing insulating container.

3. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is disposed to be in contact with at least a side surface of the liquid nitrogen containing insulating container.

4. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is disposed to be in contact with at least a bottom surface of the liquid nitrogen containing insulating container, and also covers at least a side surface of the sensor fixing member.

5. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is formed from a polymer having continuous voids.

6. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is a non-magnetic spring.

7. The liquid nitrogen cooling nitrogen sensor device container according to claim 1 , wherein the fixing buffer member is a non-magnetic fiber material.

8. A liquid nitrogen cooling sensor equipment comprising:
the liquid nitrogen cooling nitrogen sensor device container according to claim 1 ; and
a sensor attached to a sensor attachment surface of the sensor fixing member.

9. The liquid nitrogen cooling nitrogen sensor device container according to claim 2 , wherein the fixing buffer member is formed from a polymer having continuous voids.

10. The liquid nitrogen cooling nitrogen sensor device container according to claim 3 , wherein the fixing buffer member is formed from a polymer having continuous voids.

11. The liquid nitrogen cooling nitrogen sensor device container according to claim 4 , wherein the fixing buffer member is formed from a polymer having continuous voids.

12. A liquid nitrogen cooling sensor equipment comprising:
the liquid nitrogen cooling nitrogen sensor device container according to claim 2 ; and
a sensor attached to a sensor attachment surface of the sensor fixing member.

13. A liquid nitrogen cooling sensor equipment comprising:
the liquid nitrogen cooling nitrogen sensor device container according to claim 3 ; and
a sensor attached to a sensor attachment surface of the sensor fixing member.

14. A liquid nitrogen cooling sensor equipment comprising:
the liquid nitrogen cooling nitrogen sensor device container according to claim 4 ; and
a sensor attached to a sensor attachment surface of the sensor fixing member.

Assignees

• Japan Oil Gas & Metals Jogmec
• International Superconductivity Tech Center

Inventors

• Hato Tsunehiro
• Tanabe Keiichi

Classifications

• G01R33/035 Primary

  using superconductive devices · CPC title

• F17C3/085 Primary

  Cryostats · CPC title