CN204944626U - A kind of measuring instrument measuring liquid level in liquid nitrogen container - Google Patents

A kind of measuring instrument measuring liquid level in liquid nitrogen container Download PDF

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Publication number
CN204944626U
CN204944626U CN201520707531.4U CN201520707531U CN204944626U CN 204944626 U CN204944626 U CN 204944626U CN 201520707531 U CN201520707531 U CN 201520707531U CN 204944626 U CN204944626 U CN 204944626U
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CN
China
Prior art keywords
scale
liquid nitrogen
nitrogen container
floating platform
indication plate
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Expired - Fee Related
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CN201520707531.4U
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Chinese (zh)
Inventor
吴方贵
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吴方贵
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Priority to CN201520707531.4U priority Critical patent/CN204944626U/en
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Publication of CN204944626U publication Critical patent/CN204944626U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of measuring instrument measuring liquid level in liquid nitrogen container, be intended to overcome scale of the prior art directly to liquid nitrogen level detection, accuracy of measurement is low, there is potential safety hazard and the shortcoming of repeated detection can not be carried out in time, a kind of measuring instrument measuring liquid level in liquid nitrogen container is provided, comprise the scale higher than liquid nitrogen container, floating platform and graduation indication plate, be fixedly connected bottom floating platform one end and scale, the density that floating platform and scale combine is less than the density of liquid nitrogen, the length of graduation indication plate is greater than the diameter that liquid nitrogen container fills with mouth, graduation indication plate is provided with scale mounting hole, graduation indication plate and scale grafting.On every root scale mark of scale, mark has two scales, scale with the union end of scale and floating platform for starting point, the physical length of record scale, the liquid level after the conversion of another calibration summary.The utility model can continual repetitive measurement, and security is high, measurement is convenient, accuracy of measurement is high, is applicable to the measurement of liquid level in liquid nitrogen container.

Description

A kind of measuring instrument measuring liquid level in liquid nitrogen container
Technical field
The utility model relates to a kind of surveying instrument, particularly relates to a kind of measuring instrument measuring liquid level in liquid nitrogen container.
Background technology
Liquid nitrogen is widely used in medical research and clinical field as a kind of refrigerant.Due to the liquid nitrogen meeting nature consumption stored in liquid nitrogen container, need to make regular check on the content of liquid nitrogen in liquid nitrogen container.Conventional detection mode is directly inserted into bottom liquid nitrogen container by scale, and on scale, the length of frosting is innage.Adopt and measure in this way, scale cannot be fixed, and accuracy of measurement is low.After scale immerses liquid nitrogen, temperature is very low, very easily causes human body frostbite, have potential safety hazard with human contact.Just can carry out second time after needing to wait until rewarming after scale first time measurement to measure, can not meet simultaneously to the requirement that multiple liquid nitrogen container detects.
Utility model content
The utility model overcomes scale of the prior art directly to liquid nitrogen level detection, and accuracy of measurement is low, have potential safety hazard and can not carry out the shortcoming of repeated detection in time, provides a kind of measuring instrument measuring liquid level in liquid nitrogen container.
The technical scheme that the utility model realizes goal of the invention employing is: a kind of measuring instrument measuring liquid level in liquid nitrogen container, comprise the scale higher than liquid nitrogen container, also comprise floating platform and graduation indication plate, be fixedly connected bottom described floating platform one end and scale, the density that floating platform and scale combine is less than the density of liquid nitrogen, the length of graduation indication plate is greater than the diameter that liquid nitrogen container fills with mouth, and graduation indication plate is provided with scale mounting hole, graduation indication plate and scale grafting.
Described graduation indication plate is rectangle or circle.
On every root scale mark of described scale, mark has two scales, scale with the union end of scale and floating platform for starting point, the physical length of record scale, liquid level after another calibration summary converts, namely with the height that the physical length that the height that the height of liquid nitrogen container deducts floating platform deducts corresponding scale again obtains.
The beneficial effects of the utility model are: the utility model utilizes buoyancy that scale is arranged on more than liquid level, owing to not needing to judge the height of tank level by the length of frosting on scale, and can continual repetitive measurement.Meanwhile, scale does not directly contact with liquid nitrogen, and scale temperature can not be too low, and can not damage with human contact, security is high.Scale to float on liquid level shift scale indicator board again and fills with mouth to liquid nitrogen container, and graduation indication plate not only can keep the verticality of scale, can also be fixed the position of scale.The liquid level scale that scale 1 and graduation indication plate 2 intersection show is the height that current fluid level is measured, and has and measures conveniently, the advantage that accuracy of measurement is high.
Below in conjunction with accompanying drawing and embodiment, the utility model will be further described.
Accompanying drawing explanation
Fig. 1 is cut-open view of the present utility model.
Fig. 2 is the A direction view one of Fig. 1.
Fig. 3 is the A direction view two of Fig. 1.
In accompanying drawing, 1 be scale, 2 be floating platform for graduation indication plate, 2-1 are scale mounting hole, 3,4 be liquid nitrogen container, 5 be liquid nitrogen.
Embodiment
As shown in drawings, a kind of measuring instrument measuring liquid level in liquid nitrogen container of the present embodiment, comprises the scale 1 higher than liquid nitrogen container 4, also comprises floating platform 3 and graduation indication plate 2.Be fixedly connected bottom described floating platform 3 one end and scale 1, the density that floating platform 3 and scale 1 combine is less than the density of liquid nitrogen 5, and floating platform 3 can select foamed material to make.The length of graduation indication plate 2 is greater than the diameter that liquid nitrogen container 4 fills with mouth, conveniently graduation indication plate 2 is placed on liquid nitrogen container 4 and can not be dropped.The preferred graduation indication plate 2 of the present embodiment is rectangle or circle.Graduation indication plate 2 is provided with scale mounting hole 2-1, graduation indication plate 2 and scale 1 grafting.In order to determine the height of liquid level intuitively, on every root scale mark of the preferred scale of the present embodiment 1, mark has two scales, scale with the union end of scale 1 and floating platform 3 for starting point, the physical length of record scale 1, liquid level after another calibration summary converts, namely with the height that the physical length that the height that the height of liquid nitrogen container 4 deducts floating platform 3 deducts corresponding scale 1 again obtains.About the mark of liquid level, be all highly consistent liquid nitrogen container 4 as what measure, can calculate according to conversion method in advance and be identified on scale mark.If need to measure the inconsistent liquid nitrogen container of multiple height 4, can convert voluntarily again after the physical length determining scale 1.
During actual use, floating platform 3 and scale 1 are placed on the liquid nitrogen 5 of liquid nitrogen container 4, under the effect of buoyancy, floating platform 3 and scale 1 swim on liquid nitrogen 5 naturally, by graduation indication plate 2 and scale 1 grafting, on the filling mouth of shift scale indicator board 2 to liquid nitrogen container 4, make the filling mouth maintenance level of shift scale indicator board 2 and liquid nitrogen container 4.Now, the liquid level scale that scale 1 and graduation indication plate 2 intersection show is the height that current fluid level is measured.If the scale of intersection only has the physical length of scale 1, the physical length that the height that the height of available liquid nitrogen container 4 deducts floating platform 3 deducts scale 1 again obtains the height of liquid level.Measuring instrument of the present utility model can continual repetitive measurement, have security high, measure convenient, accuracy of measurement advantages of higher.

Claims (3)

1. measure the measuring instrument of liquid level in liquid nitrogen container for one kind, comprise the scale higher than liquid nitrogen container, it is characterized in that, also comprise floating platform (3) and graduation indication plate (2), described floating platform (3) one end and scale (1) bottom are fixedly connected, the density that floating platform (3) and scale (1) combine is less than the density of liquid nitrogen (5), the length of graduation indication plate (2) is greater than the diameter that liquid nitrogen container (4) fills with mouth, graduation indication plate (2) is provided with scale mounting hole (2-1), graduation indication plate (2) and scale (1) grafting.
2. a kind of measuring instrument measuring liquid level in liquid nitrogen container according to claim 1, is characterized in that, described graduation indication plate (2) is rectangle or circle.
3. a kind of measuring instrument measuring liquid level in liquid nitrogen container according to claim 1, it is characterized in that, on every root scale mark of described scale (1), mark has two scales, scale with the union end of scale (1) and floating platform (3) for starting point, the physical length of record scale (1), liquid level after another calibration summary converts, the height that the physical length that the height namely using the height of liquid nitrogen container (4) to deduct floating platform (3) deducts corresponding scale (1) again obtains.
CN201520707531.4U 2015-09-14 2015-09-14 A kind of measuring instrument measuring liquid level in liquid nitrogen container Expired - Fee Related CN204944626U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520707531.4U CN204944626U (en) 2015-09-14 2015-09-14 A kind of measuring instrument measuring liquid level in liquid nitrogen container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520707531.4U CN204944626U (en) 2015-09-14 2015-09-14 A kind of measuring instrument measuring liquid level in liquid nitrogen container

Publications (1)

Publication Number Publication Date
CN204944626U true CN204944626U (en) 2016-01-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520707531.4U Expired - Fee Related CN204944626U (en) 2015-09-14 2015-09-14 A kind of measuring instrument measuring liquid level in liquid nitrogen container

Country Status (1)

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CN (1) CN204944626U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092224A (en) * 2018-09-12 2018-12-28 四川理工学院 A kind of microscale experiment reaction unit directly displaying mass change
CN110567608A (en) * 2019-08-16 2019-12-13 北京交通大学 Fiber grating sensor calibration device based on liquid nitrogen conduction cooling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092224A (en) * 2018-09-12 2018-12-28 四川理工学院 A kind of microscale experiment reaction unit directly displaying mass change
CN109092224B (en) * 2018-09-12 2020-07-28 四川理工学院 Miniature experimental reaction device capable of directly displaying quality change
CN110567608A (en) * 2019-08-16 2019-12-13 北京交通大学 Fiber grating sensor calibration device based on liquid nitrogen conduction cooling
CN110567608B (en) * 2019-08-16 2021-08-10 北京交通大学 Fiber grating sensor calibration device based on liquid nitrogen conduction cooling

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160106

Termination date: 20180914