CN209485497U - A kind of liquid nitrogen container liquid level detection system - Google Patents
A kind of liquid nitrogen container liquid level detection system Download PDFInfo
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- CN209485497U CN209485497U CN201821854901.7U CN201821854901U CN209485497U CN 209485497 U CN209485497 U CN 209485497U CN 201821854901 U CN201821854901 U CN 201821854901U CN 209485497 U CN209485497 U CN 209485497U
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- liquid nitrogen
- nitrogen container
- cover
- upper cover
- level detection
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Abstract
The utility model relates to a kind of liquid nitrogen container liquid level detection systems, in order to solve ordinary level meter and be easy to appear electronic device failure, aging even damage when for liquid nitrogen detection, thus the technical issues of influencing detection accuracy.The technical solution of the utility model is: a kind of liquid nitrogen container liquid level detection system, including liquid nitrogen container composite cover, scale, spring, mark pointer, fixed pulley, casing, transparent sealing lid, messenger wire, floating stick, tension sensor and current alarm；The liquid nitrogen container composite cover includes upper cover and lower cover, and the upper cover is covered in the tank mouth of liquid nitrogen container, and lower cover is fixed on the bottom of upper cover, and the lower cover is insulation plug；The beneficial effects of the utility model are: structure is simple, it is easy to use, have a wide range of application, it can be integral by the cover combination of liquid level detection device and liquid nitrogen container, liquid nitrogen container cover can real-time display liquid nitrogen container fluid level condition, and can by current alarm remind staff safeguard in time, it is at low cost, safety index is high, easy to spread.
Description
Technical field
The utility model belongs to level detection apparatus field, and in particular to a kind of liquid nitrogen container liquid level detection system.
Background technique
Liquidometer is widely used in health care, essence, stem-cell research and all kinds of laboratories are frozen in herding, for liquid in liquid nitrogen container
The level monitoring of nitrogen.
Common liquidometer is usually all used in the environment of room temperature, general under the ultra-low temperature surroundings as in liquid nitrogen
Electronic device can fail, now widely used liquid nitrogen container liquid level alarm, be that installation is punched on stoste nitrogen cover
One temperature sensor platinum resistance, the sensor and the display alarm for being attached on liquid nitrogen tank wall or being fixed on stoste nitrogen cover
Device connection is shown by the sensor temperature of fixed height in detection insertion liquid nitrogen container with determining whether liquid level drops to alarm liquid level
The temperature shown is lower than -196 DEG C, illustrates that sensor is immersed in liquid nitrogen, and the temperature of display is higher than -196 DEG C, illustrates that sensor does not soak
In liquid nitrogen, alarm will call the police prompt.Since the electronic component to work long hours is easy aging even at low ambient temperatures
Damage causes large error, or even the entire alarm system of paralysis to level gauging.
Utility model content
Purpose of the utility model is to solve ordinary level meters to be easy to appear electronic device when for liquid nitrogen detection
Failure, aging even damage, to provide a kind of liquid nitrogen container liquid level detection system the technical issues of influencing detection accuracy.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of liquid nitrogen container liquid level detection system, including liquid nitrogen container composite cover, scale, spring, mark pointer, fixed pulley, set
Pipe, transparent sealing lid, messenger wire, floating stick, magnetic switch and alarm；
The liquid nitrogen container composite cover includes upper cover and lower cover, and the upper cover is covered in the tank mouth of liquid nitrogen container, the lower cover
It is fixed on the bottom of upper cover, the lower cover is insulation plug；
The bottom that described sleeve pipe passes through the through-hole and upper cover that are arranged among lower cover connects, and the fixed pulley is located in upper cover
Between, one end of the spring is fixed on the edge of upper cover, and the other end is equipped with the other end and messenger wire of mark pointer and spring
One end connection, the other end of the messenger wire is around fixed pulley and passes through in the aperture sleeve pipe of upper cover center setting, and with
The upper end of floating stick in casing connects；The scale is located on lid and is located between mark pointer and fixed pulley；It is described
Magnetic switch is located at the one end of scale close to fixed pulley, and the alarm is connect with magnetic switch；The transparent sealing cover buckle is set
In fixed pulley, scale, spring, mark the upper surface of pointer and magnetic switch, transparent sealing is covered equipped with threading hole.
Further, described sleeve pipe is cylinder-shaped sleeve.
Further, the length of described sleeve pipe is 0.5-0.9 times of liquid nitrogen container height, and the radius of described sleeve pipe is lower base
0.25-0.5 times of radius surface.
Further, the floating stick is cylinder.
Further, the center of gravity of the floating stick is at the 1/10 to 1/3 of floating stick lower part.
Further, cementing using anti-frozen glue between described sleeve pipe and lower cover and upper cover.
The beneficial effects of the utility model are:
1, the utility model structure is simple, easy to use, has a wide range of application, can be by the lid of liquid level detection device and liquid nitrogen container
Subgroup integrator, liquid nitrogen container cover can instant playback liquid nitrogen container fluid level condition.
2, the utility model is provided with transparent sealing lid on upper lid, and liquid nitrogen and the vapor in air can be prevented direct
Contact prevents the vapor at upper cover aperture from sublimating for ice crystal, it is up and down to influence messenger wire.
3, the utility model is additionally provided with casing, can prevent floating stick and messenger wire from arbitrarily swinging in liquid nitrogen, to guarantee to measure
Accuracy, the support of liquid nitrogen container composite cover is also used as, thus floating stick and messenger wire inside protection sleeve pipe.
4, the floating stick in the utility model, center of gravity can guarantee that floating stick is kept in liquid nitrogen in the bottom of floating stick in this way
Vertical state helps to improve accuracy of measurement.
5, the utility model can monitor the fluid level condition of liquid nitrogen container, can remind work by setting magnetic switch and alarm
Make personnel to safeguard in time, at low cost, safety index is high, easy to spread.
Detailed description of the invention
Fig. 1 is the main view of the utility model；
Fig. 2 is the top view of Fig. 1；
In figure: 1- liquid nitrogen container；2- upper cover；3- lower cover；4- scale；5- spring；6- identifies pointer；7- fixed pulley；8- casing；
9- transparent sealing lid；10- messenger wire；11- floats stick；12- magnetic switch；13- alarm.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, one of the present embodiment liquid nitrogen container liquid level detection system, including liquid nitrogen container composite cover, mark
Ruler 4, spring 5, mark pointer 6, fixed pulley 7, casing 8, transparent sealing lid 9, messenger wire 10 and floating stick 11；
The liquid nitrogen container composite cover includes upper cover 2 and lower cover 3, and the upper cover 2 is covered in the tank mouth of liquid nitrogen container 1, described
Lower cover 3 is fixed on the bottom of upper cover 2, and the lower cover 3 is insulation plug；
Described sleeve pipe 8 passes through the through-hole being arranged among lower cover 3 and connect with the bottom of upper cover 2, casing 8 and lower cover 3 and upper cover 2
Between using anti-frozen glue it is cementing.
The fixed pulley 7 is located at the centre of upper cover 2, and one end of the spring 5 is fixed on the edge of upper cover 2, the other end
The other end for being equipped with mark pointer 6 and spring 5 is connect with one end of messenger wire 10, and the other end of the messenger wire 10 passes through fixed pulley
It 7 and passes through in the aperture sleeve pipe 8 of 3 center of upper cover setting, and is connect with the upper end of floating stick 11 being located in casing 8；It is described
Scale 4 is located in upper cover 3 and is located between mark pointer 6 and fixed pulley 7；The magnetic switch 12 is located at scale 4 close to fixed sliding
One end of wheel 7, the alarm 13 are connect with magnetic switch 12；The transparent sealing lid 9 be located in fixed pulley 7, scale 4, bullet
Spring 5, mark the upper surface of pointer 6 and magnetic switch 12, transparent sealing lid 9 are equipped with threading hole.
The height of liquid nitrogen container 1 is 1.5m, and the top surface radius of the upper cover 2 of liquid nitrogen container composite cover is 20cm, the bottom surface half of lower cover 3
Diameter is 10cm.
Described sleeve pipe 8 is cylinder-shaped sleeve, and the radius of casing 8 is 2.5cm, length 0.8m.
The floating stick 11 is cylinder, floats the center of gravity of stick 11 at bottom 1/10.
Claims (6)
1. a kind of liquid nitrogen container liquid level detection system, it is characterised in that: including liquid nitrogen container composite cover, scale (4), spring (5), mark
Pointer (6), fixed pulley (7), casing (8), transparent sealing lid (9), messenger wire (10), floating stick (11), magnetic switch (12) and alarm
Device (13)；
The liquid nitrogen container composite cover includes upper cover (2) and lower cover (3), and the upper cover (2) is covered in the tank mouth of liquid nitrogen container (1),
The lower cover (3) is fixed on the bottom of upper cover (2), and the lower cover (3) is insulation plug；
Described sleeve pipe (8) passes through the through-hole being arranged among lower cover (3) and connect with the bottom of upper cover (2), and the fixed pulley (7) is located at
The centre of upper cover (2), one end of the spring (5) are fixed on the edge of upper cover (2), and the other end is equipped with mark pointer (6)
And the other end of spring (5) is connect with one end of messenger wire (10), the other end of the messenger wire (10) around fixed pulley (7) and passes through
In the aperture sleeve pipe (8) of upper cover (2) center setting, and it is connect with the upper end for the floating stick (11) being located in casing (8)；It is described
Scale (4) is located on upper cover (2) and is located between mark pointer (6) and fixed pulley (7), and the magnetic switch (12) is located at scale
(4) close to the one end of fixed pulley (7), the alarm (13) connect with magnetic switch (12)；Transparent sealing lid (9) button is set
In fixed pulley (7), scale (4), spring (5), mark the upper surface of pointer (6) and magnetic switch (12), transparent sealing lid is set on (9)
There is threading hole.
2. a kind of liquid nitrogen container liquid level detection system according to claim 1, it is characterised in that: described sleeve pipe (8) is cylinder
Shape casing.
3. a kind of liquid nitrogen container liquid level detection system according to claim 1, it is characterised in that: the length of described sleeve pipe (8)
It is 0.5-0.9 times of liquid nitrogen container (1) height, the radius of described sleeve pipe (8) is 0.25-0.5 times of lower cover (3) bottom surface radius.
4. a kind of liquid nitrogen container liquid level detection system according to claim 1, it is characterised in that: the floating stick (11) is cylinder
Shape.
5. a kind of liquid nitrogen container liquid level detection system according to claim 1, it is characterised in that: the center of gravity of the floating stick (11)
At the 1/10 to 1/3 of floating stick (11) lower part.
6. a kind of liquid nitrogen container liquid level detection system according to claim 1, it is characterised in that: described sleeve pipe (8) and lower cover
(3) cementing using anti-frozen glue between upper cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854901.7U CN209485497U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen container liquid level detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854901.7U CN209485497U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen container liquid level detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209485497U true CN209485497U (en) | 2019-10-11 |
Family
ID=68115669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821854901.7U Active CN209485497U (en) | 2018-11-12 | 2018-11-12 | A kind of liquid nitrogen container liquid level detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209485497U (en) |
-
2018
- 2018-11-12 CN CN201821854901.7U patent/CN209485497U/en active Active
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