CN218211528U - Liquid nitrogen height measuring device - Google Patents
Liquid nitrogen height measuring device Download PDFInfo
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- CN218211528U CN218211528U CN202221378240.1U CN202221378240U CN218211528U CN 218211528 U CN218211528 U CN 218211528U CN 202221378240 U CN202221378240 U CN 202221378240U CN 218211528 U CN218211528 U CN 218211528U
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- liquid nitrogen
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- measuring device
- processing system
- signal processing
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 239000007788 liquid Substances 0.000 title claims abstract description 117
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 105
- 238000012806 monitoring device Methods 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims description 28
- 239000003550 marker Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 238000000034 method Methods 0.000 description 9
- 208000019206 urinary tract infection Diseases 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005138 cryopreservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 230000019522 cellular metabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a liquid nitrogen height measuring device, which comprises a supporting plate, a monitoring device, a signal processing system, a display and a battery; the monitoring device is embedded and fixed in the supporting plate; the monitoring device comprises a shell, a power wheel, a fixed wheel, an inductor, a mark post and a buoy; the display is arranged above the supporting plate; the water suction pump is arranged below the supporting plate; the battery and the signal processing system are both arranged in the supporting plate; the battery is connected with the monitoring device, the signal processing system, the display and the water pump respectively, and the signal processing system is connected with the monitoring device, the display and the water pump respectively. The utility model can conveniently and quickly confirm the height of the liquid nitrogen; additionally, the utility model discloses can also show the liquid nitrogen height through the display, assist the operator in time to accomplish the liquid nitrogen and add work, the practicality is high, but wide application in medical instrument technical field.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a liquid nitrogen height measuring device.
Background
Cell cryopreservation is a technique for storing cells in a low-temperature environment for a long time by reducing cell metabolism. Cell cryopreservation is one of the main methods for cell preservation. At present, the conventional method is that the freezing storage box storing the cells is hung in a liquid nitrogen tank in a layering mode through a lifting basket, and the liquid nitrogen in the liquid nitrogen tank submerges the freezing storage box in the lifting basket. The liquid nitrogen stored in the liquid nitrogen tank is naturally consumed, the liquid nitrogen needs to be added into the liquid nitrogen tank regularly, and in the process of adding the liquid nitrogen, part of the liquid nitrogen absorbs ambient temperature to be gasified, so that a large amount of cloud mist is generated, the sight of an operator is disturbed, the liquid level height of the added liquid nitrogen in the liquid nitrogen tank cannot be determined by the operator, the liquid nitrogen is excessively added, and the cap plug cannot be placed into the liquid nitrogen tank; too little addition results in insufficient liquid nitrogen, and affects the freezing storage of samples.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a convenient practical liquid nitrogen height measuring device.
The embodiment of the utility model provides a liquid nitrogen height measuring device, which comprises a supporting plate, a monitoring device, a signal processing system, a display and a battery;
the monitoring device is embedded and fixed in the supporting plate; the monitoring device comprises a shell, a power wheel, a fixed wheel, an inductor, a mark post and a buoy;
the display is arranged above the supporting plate; the battery and the signal processing system are arranged in the supporting plate;
the battery is respectively connected with the power wheel and the sensor of the monitoring device, the signal processing system and the display, and the signal processing system is respectively connected with the power wheel and the sensor of the monitoring device and the display.
Further, the supporting plate is provided with a circular hole. The inner side wall of the round hole is provided with a thread structure.
Further, a fixed plate and a movable plate are arranged below the supporting plate, the movable plate is connected with a spring, and the movable plate and the fixed plate form a wall clamp under the elastic action of the spring.
Further, the shell is a cylinder, the outer side wall of the shell is provided with a thread structure, and the outer side wall is provided with a plurality of holes.
Further, the shell is of a net structure.
Further, a shell handle is arranged above the shell, a first partition plate is arranged in the shell, a second partition plate is arranged below the shell, and the second partition plate is horizontal to the bottom of the shell;
the bottom of the shell is provided with a notch part, the second clapboard is provided with a bulge part, and the shell and the second clapboard are rotationally connected through the notch part and the bulge part;
the second clapboard is provided with a notch.
Further, the housing is divided into a first cavity and a second cavity by a first partition plate.
Further, the buoy is arranged in the first cavity; the buoy comprises a buoy body and a scale, and the buoy body is connected with the lower end of the scale.
Further, the power wheel, the fixed wheel and the marker post are all arranged in the second cavity; the sighting rod is 7 fonts, the sighting rod includes vertical pole and horizontal pole, the one end of horizontal pole with the vertical pole upper end is connected, the other end of horizontal pole is located the top of buoy, be equipped with gear structure on the vertical pole, the vertical pole of sighting rod is located the power wheel with between the tight pulley.
Furthermore, the power wheel is arranged above the inner side wall of the shell, the power wheel comprises a latch and a driving device, the latch is fixed on the driving device, the driving device is connected with the signal processing system, and the rotation of the power wheel can drive the mark post to ascend or descend.
Above-mentioned the utility model discloses technical scheme in the embodiment has following advantage: the utility model comprises a support plate, a monitoring device, a signal processing system, a display and a battery; the utility model obtains the height signal in the liquid nitrogen tank through the measurement of the monitoring device; the height of the liquid nitrogen is determined through a signal processing system, so that the method is convenient and quick and has high accuracy; additionally, the utility model discloses can also show the liquid nitrogen height through the display, assist the accurate liquid nitrogen of accomplishing of operator and add work, the practicality is high.
Drawings
Fig. 1 is a schematic view of the overall structure of a liquid nitrogen height measuring device of the present invention.
Detailed Description
Referring to fig. 1, the utility model relates to a liquid nitrogen height measuring device, include: backup pad 1, monitoring devices 2, signal processing system 3, display 4 and battery 5 constitute, monitoring devices 2 is the cylinder, monitoring devices 2 comprises shell 6, power wheel 7, tight pulley 8, inductor, sighting rod 9 and buoy 10. The signal processing system 3 is positioned in the supporting plate 1, and the signal processing system 3 controls the rotation of the power wheel 7 according to the sensor signal. The battery 5 is positioned in the support plate 1, and the battery 5 is used for providing power for the signal processing system 3, the display 4, the power wheel 7 and the inductor.
Further as a preferred embodiment, one end of the supporting plate 1 is provided with a circular hole, the inner side wall of the hole is provided with a threaded structure, and the monitoring device 2 passes through the hole and is installed on the supporting plate 1 and can move up and down on the supporting plate 1. A semicircular groove is arranged below the supporting plate 1, and the diameter of the groove is larger than that of the basket pole 100. When the support plate 1 is placed at the mouth of a liquid nitrogen container, the basket bar 100 hung at the mouth of the liquid nitrogen container can be placed in a groove below the support plate 1, and the fixed plate 11 and the movable plate 12 are arranged below the support plate 1.
Further as a preferred embodiment, the fixing plate 11 is located below the supporting plate 1, and the fixing plate 11 is located at a side close to the monitoring device 2. The gap in the middle of the fixing plate 11 is communicated with the groove below the supporting plate 1. The diameter of the gap of the fixing plate 11 is larger than the diameter of the basket pole 100. The basket bar 100 suspended on the inner wall of the liquid nitrogen tank can pass through the gap in the middle of the fixing plate 11.
Further as a preferred embodiment, the movable plate 12 is located below the support plate 1, and the gap in the middle of the movable plate 12 is communicated with the groove below the support plate 1. The diameter of the gap in the movable plate 12 is greater than the diameter of the basketball pole 100. The basket bar 100 protruding from the outer side wall of the liquid nitrogen container can pass through the gap in the middle of the movable plate 12. One end of the movable plate 12 is connected with a handle 13.
In a further preferred embodiment, the handle 13 is located in the middle of the support plate 1, one end of the handle 13 is located in the support plate 1, the other end of the handle 13 protrudes out of the side wall of the support plate 1, one end of the handle 13 located in the support plate 1 is connected to the movable plate 12, a spring 14 is arranged on the handle 13, one end of the spring 14 is located on the side wall of the support plate 1, and the other end of the spring 14 is located at the connection position of the handle 13 and the movable plate 12. When the portable basket is used, the handle 13 protruding out of the outer side wall of the support plate 1 is pulled outwards, the spring 14 is compressed, the distance between the movable plate 12 and the fixed plate 11 is increased, the fixed plate 11 is placed on the inner side wall of the liquid nitrogen tank, the movable plate 12 is placed on the outer side wall of the liquid nitrogen tank, and the basket rod 100 penetrates through a gap between the movable plate 12 and the fixed plate 11. When the handle 13 is released, the spring 14 is extended, and the movable plate 12 and the fixed plate 11 are tightly attached to the side wall of the liquid nitrogen container under the action of the elastic force of the spring 14, so that the support plate 1 is fixed above the bottle mouth of the liquid nitrogen container.
Further as a preferred embodiment, the monitoring device 2 is a cylinder, and the monitoring device 2 is composed of a housing 6, a power wheel 7, a sensor, a post 9 and a buoy 10.
Further as preferred embodiment, shell 6 is the cylinder, there are a plurality of hole on the 6 walls of shell, also can set up 6 walls of shell into network structure, and during the use, liquid nitrogen can get into or flow out in shell 6 through the hole, 6 lateral walls of shell have a shell helicitic texture, 6 helicitic texture of shell corresponds one-to-one with the helicitic texture of backup pad 1 round hole inside wall.
Further as a preferred embodiment, a shell cover 15 is hinged above the shell 6, the diameter of the shell cover 15 is larger than the inner diameter of the shell 6, when the shell cover 15 is used, the shell cover 15 can be opened, and when the shell cover 15 is not used, the top of the shell 6 is sealed by the shell cover 15, so that foreign matters are prevented from falling into the shell 6.
A shell handle 16 is arranged above the shell 6, and the shell handle 16 is in a hollow plate shape. The monitoring device 2 is rotatable by an operator via a handle 16 of the housing 6, in which housing 6 a first partition 17, a pole 9 and a buoy 10 are arranged. The first partition 17 is provided with a plurality of holes. The first partition 17 divides the interior of the housing 6 into a first cavity 18 and a second cavity 19. The bottom of the shell 6 is provided with a notch part. A second partition plate 20 is arranged below the bottom of the shell 6.
Further preferably, the second partition 20 is located on the outer side wall of the housing 6, the lower side of the second partition 20 is at the same level as the bottom of the inner side wall of the housing 6, when the second partition 20 is used for placing the uppermost basket in the liquid nitrogen tank, the bottom of the inner side of the housing 6 is at the same level as the uppermost basket, and the middle of the second partition 20 is provided with a gap. The basket rod 100 of the basket can pass through the notch, the second partition 20 is provided with a protrusion 21, the second partition 20 is rotatably mounted at the bottom of the housing 6, specifically, the bottom of the housing 6 is provided with a notch 22, the second partition 20 is provided with a protrusion 21, and the notch 22 and the protrusion 21 are mutually clamped and can rotate relatively.
It should be noted that the C-shaped gap is mainly used for the purpose of passing through the basket rail, and may be in other shapes, or even may be formed by two second partition plates, and the distance between the two second partition plates is greater than the diameter of the basket rod.
Further preferably, the float 10 is located in a first cavity 18 in the housing 6, the float 10 being capable of floating above liquid nitrogen, the float 10 being adapted to indicate the distance between the liquid nitrogen in the liquid nitrogen tank and the uppermost basket. The buoy 10 is comprised of a buoy 23 and a scale 24.
Further preferably, the float 23 is a closed hollow cylinder, the diameter of the float 23 is smaller than the inner diameter of the first cavity 18, and the float 23 can move up and down in the first cavity 18. The float 23 can float on the liquid nitrogen as it enters the first cavity 18.
Further preferably, one end of the scale 24 is connected to the float 23, and the other end of the scale 24 protrudes from the top of the housing 6.
In a further preferred embodiment, the marker post 9 is located in the second cavity 19 of the housing 6, the marker post 9 is 7-shaped, and the marker post 9 is composed of a cross rod 25 and a longitudinal rod 26.
Further preferably, one end of the longitudinal rod 26 protrudes from the top of the housing 6. The longitudinal bar 26 is positioned between the power wheel 7 and the fixed wheel 8. The side wall of the longitudinal rod 26 is provided with a gear structure, the gear structure on the side wall corresponds to the gears on the power wheel 7 and the fixed wheel 8 one by one, and the longitudinal rod 26 in the shell 6 is lifted or lowered through the rotation of the power wheel 7.
It should be noted that the fixed wheel can also rotate, only the inside does not use a power device, and the main purpose is that the fixed wheel mainly matches with the power wheel. The fixed wheel can be replaced by a power wheel. Only two power wheels are required to rotate synchronously. Ensure that the longitudinal rod ascends or descends.
Further preferably, the cross bar 25 is located above the longitudinal bar 26, one end of the cross bar 25 is connected to the longitudinal bar 26, the cross bar 25 is perpendicular to the longitudinal bar 26, the cross bar 25 is located right above the scale 24, and when the longitudinal bar 26 contacts the bottom of the housing 6, the cross bar 25 can press the scale 24, so that the scale 24 is located in the housing 6, the scale 24 is protected, and the scale 24 is prevented from being accidentally broken.
Further as a preferred embodiment, the inductor is composed of a first inductor 27, a second inductor 28 and a third inductor 29, and the output end of the inductor is connected with the input end of the signal processing system 3.
Further as a preferred embodiment, said first sensor 27 is located on the scale 24, said first sensor 27 being located directly below the cross bar 25. The first sensor 27 senses whether a scale touches the cross bar, and the first sensor 27 may be a photoelectric proximity switch, an inductive proximity switch, a capacitive proximity switch, a hall proximity switch, or a laser ranging sensor. (the first sensor 27 is preferably a distance sensor by which a change in distance between the scale 24 and the cross bar 25 can be measured, as will be described in more detail below with reference to the first sensor 27 being a distance sensor).
Further as a preferred embodiment, said second sensor 28 is placed on the cross bar 25, the second sensor 28 being located directly above the first cavity 18, the second sensor 28 being a distance sensor, the second sensor 28 being adapted to measure the distance between the cross bar 25 and the top of the first cavity 18.
Further as a preferred embodiment, the third inductor 29 is located on the support plate 1, the third inductor 29 is located right below the housing handle 16, and the third inductor 29 is used for sensing the distance between the support plate 1 and the housing handle 16.
Further preferably, the power wheel 7 is located on the inner side wall of the housing 6, the power wheel 7 is located above the housing 6, the power wheel 7 is provided with a latch, and a power device (such as an electric motor) is arranged in the power wheel 7. The power wheel 7 can rotate clockwise or counterclockwise under the control signal of the signal processing system 3. The input end of the power wheel 7 is connected with the output end of the signal processing system 3, and the rotation of the power wheel 7 can enable the mark post 9 to move up and down in the second cavity 19.
Further as a preferred embodiment, the fixed wheel 8 is located in the first partition 17, the fixed wheel 8 is located above the first partition 17, the fixed wheel 8 and the power wheel 7 are on the same horizontal plane, the fixed wheel 8 is provided with a latch, and when the power wheel 7 rotates, the mark post 9 moves up and down in the second cavity 19 through a gear structure on the side wall of the longitudinal rod 26. When the power wheel 7 stops rotating, the fixed wheel 8 and the power wheel 7 fix the marker post 9 at a preset height, so that the marker post 9 is prevented from moving up and down.
Further as a preferred embodiment, the battery 5 is located in the support plate 1, and the battery 5 is used for providing power for the inductor, the display 4 and the signal processing system 3. The battery 5 may be implemented by using an existing battery 5 or the like.
Further as a preferred embodiment, the display 4 is located above the support plate 1. And the display device is used for displaying contents according to the control signal of the signal processing system 3, wherein the contents comprise preset liquid nitrogen height, device working state, added liquid nitrogen information and the like. The display 4 may be implemented using an existing touch display 4, which is connected to the signal processing system 3 through a general purpose I/O interface. In addition, the invention also obtains the input signal of the user through the touch display 4 and sends the input signal to the signal processing system 3.
Further as a preferred embodiment, the signal processing system 3 is located in the support plate 1, and the signal processing system 3 is configured to trigger a corresponding control signal according to the signal sent by the sensor, and send the control signal to the display 4 and the force wheel 7. The signal processing system 3 of the present invention does not relate to the improvement of the data processing flow, and the signal triggering process can be realized by using the existing MCU, which is not described herein again.
The following detailed description discloses a liquid nitrogen height measuring device's concrete theory of operation:
1. placing device
The operator penetrates the monitoring device into a basket lifting railing in a liquid nitrogen tank needing to be supplemented with liquid nitrogen at the notch of the second partition plate, the supporting plate is fixed above the bottle mouth of the liquid nitrogen tank, the shell handle is rotated to enable the monitoring device to slowly descend until the monitoring device cannot descend, the lower portion of the second partition plate is located on the uppermost basket, and the lower portion of the second partition plate and the bottom of the inner side wall of the shell are located on the same horizontal plane, so that the bottom of the inner side of the shell and the uppermost basket are located on the same horizontal plane.
2. The operator monitors the liquid nitrogen condition in the liquid nitrogen tank
The horizontal pole is located the scale top, and the scale top contacts the horizontal pole below, and when the vertical pole contacted the shell bottom, the interval of horizontal pole and scale, distance L that first inductor measured Feeling 1 Equal to the distance between the bar and the scale being 0, i.e. L Feeling 1 ＝0。
The second sensor is fixed on the cross rod, and when the longitudinal rod contacts the bottom of the shell, the distance L measured by the second sensor Feeling 2 Equal to the distance d between the cross bar and the top of the first cavity 1 I.e. L Feeling 2 ＝d 1 In the same apparatus, d 1 The value of (b) is fixed.
When L is Feeling 1 When the buoy rises to 0 degree, the power wheel rotates to enable the marker post to rise, the cross rod rises, and meanwhile the buoy also rises under the action of liquid nitrogen buoyancy. Up to L Feeling 1 >0, when L is Feeling 1 >When 0, the power wheel stops rotating, and the second sensor measures the distance L between the cross rod and the top of the first cavity gap 2x 。
In this liquid nitrogen tank, the change distance when the height H of present liquid nitrogen measures power wheel rotation and stops for the second inductor, promptly: h = L 2x -L Feeling 2 。
3. The operator is prepared to add liquid nitrogen and monitor the amount of liquid nitrogen in real time
3.1 operator inputs the height H between the uppermost basket and the distance to which liquid nitrogen is expected to be added through touch screen display Liquid for treating urinary tract infection And length L of the cap plug Plug for medical use 。
In the same device, the length L of the housing of the monitoring device is used Shell Is fixed, the third inductor is fixed on the supporting plate, and the distance d between the third inductor and the lower part of the supporting plate 2 Is fixed.
After the device is placed, the lower part of the supporting plate is placed above a tank opening of a liquid nitrogen tank for supplementing liquid nitrogen, the handle of the shell is rotated to enable the monitoring device to slowly descend until the monitoring device cannot descend, and the lower part of the second partition plate is positioned on the uppermost basket; at this time, the third sensor measures the distance L between the third sensor and the handle of the housing 1 。
3.2 calculate the height H of the monitoring device's shell into the liquid nitrogen tank 1
H 1 ＝L Shell -(L 1 +d 2 )
3.3 judging the height H of the liquid nitrogen added Liquid for treating urinary tract infection Whether the rear liquid nitrogen tank can be put into the tank with the length of L Plug for medical use Lid plug
When H is present Liquid for treating urinary tract infection +L Plug for medical use ≥H 1 The cap plug cannot be placed after the liquid nitrogen is added; h Liquid for treating urinary tract infection +L Plug for medical use ＜H 1 The cap plug can be placed after adding liquid nitrogen.
4. Height of the adjusting post
4.1 the second sensor is fixed on the cross bar, when the longitudinal bar contacts the bottom of the shell, the distance d sensed by the second sensor 1 Is the distance between the cross-bar and the top of the first cavity, the same means, this distance d 1 Is stationary.
4.2 when the buoy floats on the liquid nitrogen, under the action of the gravity of the buoy, a part below the buoy is immersed in the liquid nitrogen, the weight of the buoy and the size of the buoy are fixed in the same device, and the density of the liquid nitrogen is the same, so that the buoy is immersed in the liquid nitrogen to a depth H Deep to Is stationary.
Thus, submerged in liquid nitrogen to a depth H Deep to Is stationary.
Therefore, the height H of the post actually required to rise Sign board
H Sign board ＝(d+H Liquid for treating urinary tract infection )-H Deep to
When the operator sets H through the touch screen display Liquid for treating urinary tract infection Then, the second sensor measures the distance L between the cross rod and the top of the first cavity gap 2x ，
When L is 2x ＞H Sign When the liquid level reaches the set liquid level, the display displays that the liquid level reaches the set liquid level,
when L is 2x ＜H Sign board When the vertical rod is lifted to L, the power wheel rotates to lift the vertical rod 2x ＝H Sign board The display shows please add liquid nitrogen. First inductor measures interval L between cross rod and scale 0 。
4.3 addition of liquid Nitrogen
The first inductor being at different t 1 、t 2 、t 3 、t 4 Time point measuring cross bar and scale distance Lt 1 、Lt 2 、Lt 3 、Lt 4 。
When Lt is 1 ＝Lt 2 ＝Lt 3 ＝Lt 4 ＝L 0 Indicating that no liquid nitrogen is added, the display shows that the liquid nitrogen is added as soon as possible;
when L is 0 ＝Lt 1 ＝Lt 2 ＞Lt 3 ＞Lt 4 Indicating that the addition of liquid nitrogen has begun, the display shows the predicted time to completion t Preparation of 。
Calculating a projected time to completion t Preparation of In the method of (a) to (b),
when liquid nitrogen addition is started, the first inductor is at different t 1 、t 2 、t 3 、t 4 Time point measuring cross bar and scale distance Lt 1 、 Lt 2 、Lt 3 、Lt 4 。
Calculating two adjacent t 1 、t 2 Speed V of liquid nitrogen addition at time point 1
Passing through t 2 After the time of (1), a time t of completion is predicted Preparation of
By analogy, pass t 3 After the time of (1), a time t of completion is predicted Preparation of
Until the first sensor measures the distance L again Feeling 1 Equal to 0. The display shows that liquid nitrogen has been added.
Firstly, measuring and acquiring height signals of height parameters in a liquid nitrogen tank by a monitoring device; the height of the liquid nitrogen is accurately determined through the signal processing system, and the method is convenient, quick and high in accuracy; in addition, the liquid nitrogen adding device can also display the height of the liquid nitrogen through the display to assist an operator to accurately complete liquid nitrogen adding work, and is high in practicability. When the monitoring device is used, an operator penetrates the monitoring device into the basket rail in the liquid nitrogen tank at the notch of the second partition plate, and then fixes the supporting plate above the bottle mouth of the liquid nitrogen tank; the handle of the rotary shell enables the monitoring device to slowly descend until the monitoring device can not descend, the device automatically calculates the height of the current liquid level and displays the height on the display, when liquid nitrogen is poured into the liquid nitrogen tank, the height of the basket at the top of the liquid nitrogen tank needs to be immersed can be set through the display, the device monitors the pouring speed of the liquid nitrogen in real time, information such as estimated time and the like is obtained, operators are constantly reminded, the liquid nitrogen amount in the liquid nitrogen tank is ensured to reach the set liquid nitrogen height, samples stored in the basket at the top of the liquid nitrogen tank can be safely and effectively soaked in the liquid nitrogen, the storage quality of biological samples is ensured, excessive liquid nitrogen addition is avoided, and the cover plug cannot be placed into the liquid nitrogen tank. The method is simple to operate, wide in applicability and good in user experience.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The utility model provides a liquid nitrogen height measuring device which characterized in that: the device comprises a supporting plate, a monitoring device, a signal processing system, a display and a battery;
the monitoring device is embedded and fixed in the supporting plate; the monitoring device comprises a shell, a power wheel, a fixed wheel, an inductor, a mark post and a buoy;
the display is arranged above the supporting plate; the battery and the signal processing system are both arranged in the supporting plate;
the battery is respectively connected with the power wheel and the sensor of the monitoring device, the signal processing system and the display, and the signal processing system is respectively connected with the power wheel and the sensor of the monitoring device and the display.
2. The liquid nitrogen height measuring device according to claim 1, characterized in that: the backup pad is equipped with circular hole, the inside wall in circular hole is equipped with helicitic texture.
3. The liquid nitrogen height measuring device according to claim 1, wherein: the supporting plate is provided with a fixed plate and a movable plate below, the movable plate is connected with a spring, and the movable plate and the fixed plate form a wall clamp under the elastic action of the spring.
4. The liquid nitrogen height measuring device according to claim 1, characterized in that: the shell is a cylinder, the outer side wall of the shell is provided with a thread structure, and the outer side wall is provided with a plurality of holes.
5. The liquid nitrogen height measuring device according to claim 1, characterized in that: the shell is of a net structure.
6. The liquid nitrogen height measuring device according to claim 1, wherein: a shell handle is arranged above the shell, a first partition plate is arranged in the shell, a second partition plate is arranged below the shell, and the second partition plate is horizontal to the bottom of the shell;
the bottom of the shell is provided with a notch part, the second clapboard is provided with a bulge part, and the shell and the second clapboard are rotationally connected through the notch part and the bulge part;
the second clapboard is provided with a notch.
7. The liquid nitrogen height measuring device according to claim 4, wherein: the housing is divided into a first cavity and a second cavity by a first partition.
8. The liquid nitrogen height measuring device according to claim 7, wherein: the buoy is arranged in the first cavity; the buoy comprises a buoy body and a scale, and the buoy body is connected with the lower end of the scale.
9. The liquid nitrogen height measuring device according to claim 7, wherein: the power wheel, the fixed wheel and the marker post are all arranged in the second cavity; the sighting rod is 7 fonts, the sighting rod includes vertical pole and horizontal pole, the one end of horizontal pole with the vertical pole upper end is connected, the other end of horizontal pole is located the top of buoy, be equipped with gear structure on the vertical pole, the vertical pole of sighting rod is located the power wheel with between the tight pulley.
10. The liquid nitrogen level measuring device according to claim 9, wherein: the power wheel is arranged above the inner side wall of the shell and comprises a latch and a driving device, the latch is fixed on the driving device, the driving device is connected with the signal processing system, and the rotation of the power wheel can drive the mark post to ascend or descend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221378240.1U CN218211528U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen height measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221378240.1U CN218211528U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen height measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218211528U true CN218211528U (en) | 2023-01-03 |
Family
ID=84646386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221378240.1U Expired - Fee Related CN218211528U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen height measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218211528U (en) |
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2022
- 2022-06-02 CN CN202221378240.1U patent/CN218211528U/en not_active Expired - Fee Related
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