CN208223604U - A kind of easy Dewar bottle liquid nitrogen level measuring device - Google Patents
A kind of easy Dewar bottle liquid nitrogen level measuring device Download PDFInfo
- Publication number
- CN208223604U CN208223604U CN201820819723.8U CN201820819723U CN208223604U CN 208223604 U CN208223604 U CN 208223604U CN 201820819723 U CN201820819723 U CN 201820819723U CN 208223604 U CN208223604 U CN 208223604U
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- CN
- China
- Prior art keywords
- dewar bottle
- adsorption element
- pipe
- liquid nitrogen
- elevation carrection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of easy Dewar bottle liquid nitrogen level measuring device, including Dewar bottle, floating block and elevation carrection pipe, the floating block is arranged within the Dewar bottle, the elevation carrection pipe is arranged except the Dewar bottle, the floating block is equipped with the first adsorption element, the elevation carrection pipe is equipped with the second adsorption element, first adsorption element adsorbs mutually with second adsorption element, second adsorption element is that lifting carriage is connect with the elevation carrection pipe, and the elevation carrection pipe is equipped with inductive switch.The beneficial effects of the utility model are: can reflect the height change of floating block by the second adsorption element since the first adsorption element and the second adsorption element adsorb mutually, to obtain the variation of Dewar bottle liquid nitrogen level, structure is simple, cheap, easy to use；Only need to do simple refit on existing Dewar bottle body without destroying whole structure and performance；Can opening is not needed when use.
Description
Technical field
The utility model relates to measuring device more particularly to a kind of easy Dewar bottle liquid nitrogen level measuring devices.
Background technique
For the Dewar bottle of not liquid level sensor, the mode for usually observing liquid nitrogen level has: insertion club sees frosting feelings
Condition；Liquid level is illuminated with flashlight.
The Dewar bottle of (old-fashioned EDS and XRF configuration in such as Electronic Speculum) higher for installation site, needs ascending stair that could open
The upper cover of Dewar bottle has the danger fallen.For this Dewar bottle, liquid level can only qualitatively be seen by being inserted into club, and be used
Flashlight irradiation liquid level can be because having a large amount of steam and not seeing liquid level in Dewar bottle.
For removing the Dewar bottle of (such as specific surface and pore-size distribution tester) using middle inconvenience in instrument, they do not have generally
There is upper cover or upper cover observation cannot be opened.For this Dewar bottle, experience can only be leaned on substantially to infer the surplus of liquid nitrogen.
Currently, the type of liquid level meter is very more, but most of liquid level meters are designed for cryogenic liquid.Because low
The problems such as temperature is lower to freeze, electronic device failure will lead to conventional liquid level meter and fail when detecting low-temperature liquid level or misalignment.
The patent for measuring liquid level at low temperature has very much, mainly there is float-type, resistance-type, condenser type and the methods of differential.These sides
Method often has these problems: first, it needs to immerse float, measuring stick, conducting wire etc. in liquid nitrogen；Second, need to Dewar bottle into
Row repacking；Third, the opening of Dewar bottle is smaller (diameter is generally less than 5cm), and heat insulation effect can be destroyed by probeing into these equipment, and
When canned liquid nitrogen or want withdrawing device or device itself that can interfere pouring into for liquid nitrogen；4th, the component in liquid nitrogen
Service life, stability are doubtful；5th, equipment component, which needs to generate heat, will increase the volatilization of liquid nitrogen；6th, using laser ranging or
The method of person's ultrasonic measurement, but laser probe or ultrasonic probe are generally all expensive.
Summary of the invention
In order to solve the problems in the prior art, the utility model provides a kind of easy Dewar bottle liquid nitrogen level measurement
Device.
The utility model provides a kind of easy Dewar bottle liquid nitrogen level measuring device, including Dewar bottle, floating block and height
Measurement pipe is spent, the floating block is arranged within the Dewar bottle, and the elevation carrection pipe is arranged except the Dewar bottle, described
Floating block is equipped with the first adsorption element, and the elevation carrection pipe is equipped with the second adsorption element, first adsorption element and institute
It states the second adsorption element to adsorb mutually, second adsorption element is that lifting carriage is connect with the elevation carrection pipe, the height
It spends measurement pipe and is equipped with inductive switch.
The floating block is polytrifluorochloroethylene floating block as a further improvement of the utility model, the first absorption structure
Part is with paramagnetic bloom, and the polytrifluorochloroethylene floating block cladding bloom, second adsorption element is permanent magnetism
Iron slider.
The inductive switch is magnetic reed switch as a further improvement of the utility model, and the magnetic reed switch is by leading
Line is connected with alarm.
The elevation carrection pipe is to have graduated glass tube as a further improvement of the utility model,.
The inductive switch is arranged within the glass tube as a further improvement of the utility model,.
The elevation carrection pipe is fixedly connected with the outer wall of the Dewar bottle as a further improvement of the utility model,
The elevation carrection pipe is parallel with the axis of the outer wall of the Dewar bottle.
The beneficial effects of the utility model are: can pass through since the first adsorption element and the second adsorption element adsorb mutually
Second adsorption element reflects the height change of floating block, and to obtain the variation of Dewar bottle liquid nitrogen level, structure is simple, and price is low
It is honest and clean, it is easy to use；Only need to do simple refit on existing Dewar bottle body without destroying whole structure and performance；Make
Used time does not need can opening.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of easy Dewar bottle liquid nitrogen level measuring device of the utility model.
Specific embodiment
The utility model is described in further detail for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of easy Dewar bottle liquid nitrogen level measuring device, including Dewar bottle 1, floating block 2 and height are surveyed
Buret 4, the floating block 2 are arranged within the Dewar bottle 1, and the elevation carrection pipe 4 is arranged except the Dewar bottle 1, institute
Floating block 2 is stated equipped with the first adsorption element, the elevation carrection pipe 4 is equipped with the second adsorption element, first adsorption element
It is adsorbed mutually with second adsorption element, second adsorption element is that lifting carriage is connect with the elevation carrection pipe 4, institute
Elevation carrection pipe 4 is stated equipped with inductive switch.
As shown in Figure 1, the floating block 2 is polytrifluorochloroethylene (PCTFE) floating block, first adsorption element is with suitable
Magnetic bloom, the polytrifluorochloroethylene floating block coat the bloom, and second adsorption element is permanent magnetism iron slider 3, forever
Magnet slide block 3 is the cylindrical magnet iron slider of perforation, and the cylindrical magnet iron slider of perforation passes through smooth elevation carrection pipe
4, because having vacuum layer and gap (2cm) between 1 inside and outside wall of Dewar bottle, to select magnetic stronger permanent magnet, poly- trifluoro
Vinyl chloride (PCTFE) floating block is swum on liquid nitrogen 7, and position is about the liquid level position of liquid nitrogen 7, and with the variation of liquid level and
Mobile, permanent magnetism iron slider 3 also moves because of lighter in weight.
As shown in Figure 1, the inductive switch is magnetic reed switch 5, the magnetic reed switch 5 is connected with alarm by conducting wire 6,
According to the use demand of Dewar bottle 1, one magnetic reed switch 5 of setting is used as alarm at corresponding liquid nitrogen warning liquid level in glass tube
Switch, and draw lead device taking alarm.Alarm need to be self-powered, can be a lampet or a loudspeaker according to demand；
When the liquid level lower liquid level close to warning, polytrifluorochloroethylene (PCTFE) floating block is also moved with permanent magnetism iron slider 3
To alert locations.The magnetic field of permanent magnetism iron slider 3 can be such that the reed of magnetic reed switch 5 is closed, and alarm, that is, warning reminding supplements liquid nitrogen.
As shown in Figure 1, the elevation carrection pipe 4 is to have graduated glass tube, glass tube bottom end and 1 inner wall of Dewar bottle
Bottom is generally in sustained height, can measure the height change of permanent magnetism iron slider 3, by elevation carrection pipe 4 to obtain Dewar
The variation of 7 liquid level of liquid nitrogen in bottle 1.
As shown in Figure 1, the inductive switch is arranged within the glass tube.
As shown in Figure 1, the elevation carrection pipe 4 is fixedly connected with the outer wall of the Dewar bottle 1, the elevation carrection pipe 4
It is parallel with the axis of the outer wall of the Dewar bottle.
A kind of easy Dewar bottle liquid nitrogen level measuring device provided by the utility model, due to the first adsorption element and
Two adsorption elements adsorb mutually, and the height change of floating block 2 can be reflected by the second adsorption element, to obtain in Dewar bottle 1
The variation of 7 liquid level of liquid nitrogen, structure is simple, cheap, easy to use；It only needs to do simple refit on existing Dewar bottle body
Without destroying whole structure and performance；Can opening is not needed when use.
A kind of easy Dewar bottle liquid nitrogen level measuring device provided by the utility model, the liquid suitable for non magnetic material
The liquid level of nitrogen cascade is observed, and old-fashioned X-ray energy spectrometer (EDS), the old-fashioned XRF fluorescence of no liquid level emasuring device can be installed at
The liquid level of liquid nitrogen is measured on the Dewar bottle of analyzer, specific surface and pore-size distribution tester etc..
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (6)
1. a kind of easy Dewar bottle liquid nitrogen level measuring device, it is characterised in that: including Dewar bottle, floating block and elevation carrection
Pipe, the floating block are arranged within the Dewar bottle, and the elevation carrection pipe is arranged except the Dewar bottle, on the floating block
Equipped with the first adsorption element, the elevation carrection pipe is equipped with the second adsorption element, first adsorption element and described second
Adsorption element adsorbs mutually, and second adsorption element is that lifting carriage is connect with the elevation carrection pipe, the elevation carrection
Pipe is equipped with inductive switch.
2. easy Dewar bottle liquid nitrogen level measuring device according to claim 1, it is characterised in that: the floating block is poly-
Chlorotrifluoroethylene floating block, first adsorption element are with paramagnetic bloom, polytrifluorochloroethylene floating block cladding institute
Bloom is stated, second adsorption element is permanent magnetism iron slider.
3. easy Dewar bottle liquid nitrogen level measuring device according to claim 2, it is characterised in that: the inductive switch
For magnetic reed switch, the magnetic reed switch is connected with alarm by conducting wire.
4. easy Dewar bottle liquid nitrogen level measuring device according to claim 1, it is characterised in that: the elevation carrection
Pipe is the graduated glass tube of tool.
5. easy Dewar bottle liquid nitrogen level measuring device according to claim 4, it is characterised in that: the inductive switch
It is arranged within the glass tube.
6. easy Dewar bottle liquid nitrogen level measuring device according to claim 1, it is characterised in that: the elevation carrection
Pipe is fixedly connected with the outer wall of the Dewar bottle, and the elevation carrection pipe is parallel with the axis of the outer wall of the Dewar bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819723.8U CN208223604U (en) | 2018-05-29 | 2018-05-29 | A kind of easy Dewar bottle liquid nitrogen level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819723.8U CN208223604U (en) | 2018-05-29 | 2018-05-29 | A kind of easy Dewar bottle liquid nitrogen level measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208223604U true CN208223604U (en) | 2018-12-11 |
Family
ID=64506732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820819723.8U Expired - Fee Related CN208223604U (en) | 2018-05-29 | 2018-05-29 | A kind of easy Dewar bottle liquid nitrogen level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208223604U (en) |
-
2018
- 2018-05-29 CN CN201820819723.8U patent/CN208223604U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181211 Termination date: 20200529 |