CN217816180U - Liquid nitrogen adding device - Google Patents
Liquid nitrogen adding device Download PDFInfo
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- CN217816180U CN217816180U CN202221382880.XU CN202221382880U CN217816180U CN 217816180 U CN217816180 U CN 217816180U CN 202221382880 U CN202221382880 U CN 202221382880U CN 217816180 U CN217816180 U CN 217816180U
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Abstract
The utility model discloses a liquid nitrogen adding device, which comprises a supporting plate, a monitoring device, a water pump, a signal processing system, a display and a battery; the monitoring device is embedded and fixed in the supporting plate; 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 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; in addition, the utility model drives the water pump to start and stop through the signal processing system based on the liquid nitrogen height, thereby controlling the addition of liquid nitrogen, and has high practicability and automation degree; 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 adds device.
Background
Cell cryopreservation is a technique for placing cells in a low-temperature environment, reducing cell metabolism and facilitating long-term storage. Cell cryopreservation is one of the main methods for cell preservation. At present, the commonly used method is that the cryopreservation boxes storing cells are suspended in a liquid nitrogen tank in a layering manner through a basket, and the cryopreservation boxes in the basket are immersed by liquid nitrogen in the liquid nitrogen tank. Because 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, and the liquid level height of the added liquid nitrogen in the liquid nitrogen tank cannot be determined by the operator, too much liquid is added, and a cover 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 adds device.
The embodiment of the utility model provides a liquid nitrogen adds device, including backup pad, monitoring devices, suction pump, signal processing system, display and battery;
the monitoring device is embedded and fixed in the supporting plate;
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 respectively connected with the monitoring device, the signal processing system, the display and the water pump, and the signal processing system is respectively connected with the monitoring device, the display and the water pump.
Further, the monitoring device comprises a shell, a power wheel, a fixed wheel, an inductor, a mark post and a buoy; and the power wheel and the sensor are both connected with the signal processing system.
Furthermore, the shell is a cylinder, and a plurality of holes are arranged on the wall of the shell.
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 partition plate is provided with a notch.
Furthermore, the lateral wall of shell is equipped with the helicitic texture, the shell passes through first baffle and is divided into first lacuna and second lacuna.
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 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.
Further, still include the support, connect in the backup pad below, the support below is connected with the support head that is equipped with the bayonet socket.
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 water pump, a signal processing system, a display and a battery; the utility model firstly 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; in addition, the utility model drives the water pump to start and stop through the signal processing system based on the liquid nitrogen height, thereby controlling the addition of the liquid nitrogen, and the utility model has high practicability and automation degree; the utility model discloses can also show the liquid nitrogen height through the display, help the operator in time to accomplish the liquid nitrogen and add work, the practicality is high.
Drawings
Fig. 1 is a schematic view of the overall structure of a liquid nitrogen adding device of the present invention.
Detailed Description
Referring to fig. 1, the utility model relates to a liquid nitrogen adds device, include: backup pad 1, monitoring devices 2, suction pump 3, signal processing system 4, display 5 and battery 6 constitute, monitoring devices 2 is the cylinder, monitoring devices 2 comprises shell 7, power wheel 8, tight pulley 9, inductor, sighting rod 10 and buoy 11, monitoring devices 2 is used for monitoring the liquid level height of liquid nitrogen in the liquid nitrogen tank. The signal processing system 4 is positioned in the support plate 1, and the signal processing system 4 controls the water suction pump 3 to start or stop working and the power wheel 8 to rotate according to the sensor signal. The battery 6 is positioned in the support plate 1, and the battery 6 is used for providing power for the water suction pump 3, the signal processing system 4, the display 5, the power wheel 8 and the inductor.
Further as preferred embodiment, backup pad 1 is located drinking-water pipe 12 top, be equipped with the insulating layer between backup pad 1 and the drinking-water pipe 12, the insulating layer can be polyurethane foam or double-deck vacuum organic glass, and when filling with liquid nitrogen in drinking-water pipe 12, the insulating layer can avoid the influence of the liquid nitrogen of ultra-low temperature to power 6, signal processing system 4 and display 5 normal operating. The utility model discloses a cell cryopreservation device, including backup pad 1, monitoring device 2, backup pad 1, the top is equipped with handle 13, 1 one end of backup pad is equipped with support 14, 1 other one end of backup pad has the circular shape hole, and the helicitic texture is established to the inside wall in hole, and monitoring device 2 passes through the hole and installs in backup pad 1 to can reciprocate in backup pad 1, monitoring device 2 is put into the cell and is freezed and deposit jar 37.
Further as preferred embodiment, suction pump 3 is located backup pad 1 below, suction pump 3 links to each other with drinking-water pipe 12, suction pump 3 is in passing through drinking-water pipe 12 and takes out liquid nitrogen into the liquid nitrogen jar, the output of signal processing system 4 is connected to suction pump 3's input, suction pump 3 begins work or stops work and is controlled by signal processing system 4.
Further as preferred embodiment, drinking-water pipe 12 is the both ends open-ended cylindrical, drinking-water pipe 12 comprises low temperature resistant material (like stainless steel, aluminum alloy etc.), and water inlet 15 one end of drinking-water pipe 12 is less than delivery port 16 one end, and the partly drinking-water pipe 12 that is located delivery port 16 one end is in backup pad 1, the opening of delivery port 16 is located monitoring devices 2 one side, be equipped with spring 17 in the delivery port 16, delivery port 16 is equipped with piston 18, the one end and the spring 17 of piston 18 are connected. When the water suction pump 3 works, the pressure of the water outlet 16 is larger than the elastic force of the spring 17, the spring 17 in the water outlet 16 of the water suction pipe 12 extends, the water outlet 16 is opened, and liquid nitrogen flows out of the water outlet 16; when the water suction pump 3 stops working, the pressure of the water outlet 16 is smaller than the elastic force of the spring 17, the spring 17 in the water outlet 16 is shortened, the piston 18 blocks the water outlet 16, and liquid nitrogen is blocked in the water suction pipe 12. The liquid nitrogen in the suction pipe 12 is prevented from flowing into the liquid nitrogen tank.
Further as a preferred embodiment, the monitoring device 2 is a cylinder, and the monitoring device 2 is composed of a housing 7, a power wheel 8, a sensor, a post 10 and a buoy 11.
Further as a preferred embodiment, the shell 7 is a cylinder, a plurality of holes are formed in the wall of the shell 7, the wall of the shell 7 can also be set to be a net-shaped structure, liquid nitrogen can enter or flow out of the shell 7 through the holes when the shell is used, a shell thread structure 19 is arranged on the outer side wall of the shell 7, and the shell thread structure 19 corresponds to the thread structure on the inner side wall of the round hole of the support plate in a one-to-one mode.
A shell handle 20 is arranged above the shell 7, and the shell handle 20 is in a hollow plate shape. The monitoring device 2 is rotatable by an operator via a housing handle 20, in which housing 7 a first diaphragm 21, a post 10 and a buoy 11 are arranged. The first partition plate 21 is provided with a plurality of holes. The first partition 21 divides the interior of the housing 7 into a first cavity 22 and a second cavity 23. The bottom of the housing 7 has a notch 25. A second partition plate 24 is arranged below the bottom of the shell 7.
Further as a preferred embodiment, the second partition plate 24 is located on the outer side wall of the housing 7, the lower side of the second partition plate 24 is on the same horizontal plane with the bottom of the inner side wall of the housing 7, when the second partition plate 24 is used for placing the uppermost basket in the liquid nitrogen tank, the bottom of the inner side of the housing and the uppermost basket are on the same horizontal plane, and a C-shaped gap is formed in the middle of the second partition plate 24. The width of the central opening of the second partition 24 is greater than the diameter of the hand rail 35. The second partition 24 is provided with a protruding portion 26, the second partition 24 is rotatably mounted at the bottom of the housing 7, specifically, the bottom of the housing 7 is provided with a notch portion 25, the second partition 24 is provided with a protruding portion 26, and the notch portion 25 and the protruding portion 26 are mutually engaged and can rotate relatively.
It should be noted that the C-shaped gap is mainly used for the purpose of passing through the hand basket rail, and may be in other shapes, and may even be formed by two second partition plates, and the distance between the two second partition plates is greater than the diameter of the hand basket rail.
Further preferably, the float 11 is located in a first cavity 22 in the housing 7, the float 11 being capable of floating above the liquid nitrogen, the float 11 being adapted to indicate the distance between the liquid nitrogen in the liquid nitrogen tank and the uppermost basket. The buoy 11 is comprised of a buoy 27 and a scale 28.
Further preferably, the float 27 is a closed hollow cylinder, the diameter of the float 27 is smaller than the inner diameter of the first cavity 22, and the float 27 can move up and down in the first cavity 22. The float 27 can float on the liquid nitrogen as it enters the first cavity 22.
Further preferably, one end of the scale 28 is connected to the float 27, and the other end of the scale 28 protrudes from the top of the housing 7. The scale 28 is provided with a numerical value, and the height of the scale 28 can be represented by a plurality of different colors on the scale 28, so that an operator can observe the height conveniently.
In a further preferred embodiment, the post 10 is located in the second cavity 23 of the housing 7, the post 10 is in a 7 shape, and the post 10 is composed of a cross bar 29 and a longitudinal bar 30.
Further preferably, one end of the longitudinal rod 30 protrudes from the top of the housing 7. The longitudinal rod 30 is positioned between the power wheel 8 and the fixed wheel 9. The side wall of the longitudinal rod 30 is provided with a gear structure 31, the gear structures 31 on the side wall correspond to the gears on the power wheel 8 and the fixed wheel 9 one by one, and the longitudinal rod 30 in the shell 7 is lifted or lowered through the rotation of the power wheel 8.
It should be noted that the fixed wheel can also rotate, and only the inside does not use a power device, and the main purpose is that the fixed wheel mainly matches with a power wheel. The fixed wheel can be replaced by a power wheel. Only two power wheels need to rotate synchronously. Ensure that the longitudinal rod ascends or descends.
In a further preferred embodiment, the cross bar 29 is located above the longitudinal bar 30, one end of the cross bar 29 is connected to the longitudinal bar 30, the cross bar 29 is perpendicular to the longitudinal bar 30, the cross bar 29 is located right above the scale 28, and when the longitudinal bar 30 contacts the bottom of the housing 7, the cross bar 29 can press the scale 28, so that the scale 28 is located in the housing 7, and the scale 28 is protected and the scale 28 is prevented from being accidentally broken.
Further as a preferred embodiment, the inductor is composed of a first inductor 32, a second inductor 33 and a third inductor 34, and the output end of the inductor is connected with the input end of the signal processing system 4.
Further as a preferred embodiment, the first sensor 32 is located below the cross bar 29, the first sensor 32 is located directly above the scale 28, the first sensor 32 senses whether the scale 28 contacts the cross bar 29, and the first sensor 32 may be a photoelectric proximity switch, an inductive proximity switch, a capacitive proximity switch, a hall proximity switch, a laser ranging sensor, or the like.
Further as a preferred embodiment, said second inductor 33 is located on the inner side wall above the housing 7. The second sensor 33 is a distance sensor, and the distance between the second sensor 33 and the bottom of the housing 7 is equal to the distance between the cross bar 29 and the bottom of the housing 7 when the longitudinal bar 30 contacts the bottom of the housing 7. The second sensor 33 is used for determining whether the side rail 30 contacts the bottom of the housing 7. When the vertical rod 30 contacts the bottom of the housing 7, the second sensor 33 reads a value corresponding to a distance between the second sensor 33 and the other side of the wall of the housing 7, and when the vertical rod 30 ascends, the second sensor 33 reads a value corresponding to a distance between the second sensor 33 and the vertical rod 30. Therefore, whether the side rail 30 contacts the bottom of the housing 7 can be determined by the change of the value read by the second sensor 33.
In other embodiments, a second sensor 33 is positioned below the cross-bar 29, the second sensor 33 is positioned directly above the first cavity 22, the second sensor 33 is a distance sensor, and the second sensor 33 is used to sense the distance between the cross-bar 29 and the top of the first cavity 22.
Further as a preferred embodiment, the third inductor 34 is located on the supporting plate 1, the third inductor 34 is located right below the housing handle 20, and the third inductor 34 is used for sensing the distance between the supporting plate 1 and the housing handle 20.
Further preferably, the power wheel 8 is located on the inner side wall of the housing 7, the power wheel 8 is located above the housing 7, the power wheel 8 is provided with a latch, and a power device (such as an electric motor) is located inside the power wheel 8. The power wheel 8 can rotate clockwise or anticlockwise under the control signal of the signal processing system 4. The input end of the power wheel 8 is connected with the output end of the signal processing system 4, and the rotation of the power wheel 8 can enable the mark post 10 to move up and down in the second cavity 23.
Further preferably, the fixed wheel 9 is located in the first partition 21, the fixed wheel 9 is located above the first partition 21, the fixed wheel 9 and the power wheel 8 are on the same horizontal plane, the fixed wheel 9 is provided with a latch, and when the power wheel 8 rotates, the target 10 moves up and down in the second cavity 23 through the gear structure 31 on the side wall of the longitudinal rod 30. When the power wheel 8 stops rotating, the fixed wheel 9 and the power wheel 8 fix the marker post 10 at a preset height, and the marker post 10 is prevented from moving up and down.
Further as a preferred embodiment, the battery 6 is located at the handle support plate 1, and the battery 6 is used for providing power for the sensor, the display 5, the water pump 3 and the signal processing system 4. The battery 6 may be implemented by an existing battery or the like.
Further as a preferred embodiment, said display 5 is located above the support plate 1. And the display device is used for displaying contents including preset liquid nitrogen height, device working state, liquid nitrogen adding information and the like according to the control signal of the signal processing system 4. The display 5 may be implemented using an existing touch display 5, which is connected to the signal processing system 4 through a general purpose I/O interface. Additionally, the utility model discloses still acquire user's input signal through touch display 5 to with input signal transmission to signal processing system 4.
As a further preferred embodiment, the signal processing system 4 is located in the supporting plate 1, and the signal processing system 4 is configured to trigger a corresponding control signal according to a signal sent by the sensor, and send the control signal to the display 5, the power wheel 8 and the water pump 3. The utility model discloses a signal processing system 4 does not relate to the improvement on the data processing flow, and its signal trigger process all can adopt current MCU to realize, no longer gives unnecessary details here.
Further preferably, the support 14 is located below the support plate 1, the support 14 is located at the water inlet 15, and a notch is formed below the support 14, so that the support 14 can be placed at the edge of the opening of the liquid nitrogen tank 36 as a liquid nitrogen source through the notch in use.
The following detailed description discloses a specific working principle of liquid nitrogen adding device:
1. when the second inductor was located the shell inside wall, the second inductor can be apart from the inductor, and the second inductor also can be the contact inductor (when the height of second inductor was in the initial position with the sighting rod, the height of horizontal pole is the same, can set up the contact point on the horizontal pole, and when the sighting rod was in the initial position, contact point contacted the second inductor on the horizontal pole), and the second inductor mainly used judges whether the sighting rod was in the initial position (whether vertical pole contacted the shell bottom).
1. Placing device
An operator penetrates the monitoring device into a basket rail in a liquid nitrogen tank needing to be supplemented with liquid nitrogen at the notch of the second partition plate, the supporting plate is placed at the tank opening of the liquid nitrogen tank needing to be supplemented with liquid nitrogen, the water inlet of the water pumping pipe is placed into the liquid nitrogen tank serving as a liquid nitrogen source, and the water pumping pipe is fixed on the edge of the tank opening of the liquid nitrogen tank serving as the liquid nitrogen source through the notch below the support; the monitoring device is slowly descended until the monitoring device can not descend by rotating the handle of the shell, the lower part of the second clapboard is positioned at the uppermost basket, and the lower part of the second clapboard and the bottom of the inner side wall of the shell are positioned at the same horizontal plane, so the bottom of the inner side of the shell and the uppermost basket are positioned at the same horizontal plane.
2. The operator inputs the height H between the distance between the basket at the top and the expected liquid nitrogen addition through the touch screen display Liquid for treating urinary tract infection And length L of the cap plug Plug for medical use 。
3. In the same device, the length L of the housing of the monitoring device is used Shell 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 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
3.1 calculate the height H of the monitoring device's shell into the liquid nitrogen tank 1
L Shell -(L 1 +d)＝H 1
3.2 judging the height H of the liquid nitrogen added Liquid for treating urinary tract infection The length of the rear liquid nitrogen tank is 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 second sensor for determining whether the post is in the home position (whether the vertical post touches the bottom of the housing)
Because the second inductor is fixed on the inner side wall of the shell. The distance d between the second inductor and the other housing wall 1 Fixed in the same device.
L when the second sensor reads 2 ＝d 1 The vertical rod is contacted with the bottom of the shell, and the mark post is at the starting position.
L when the second sensor reads 2 <d 1 The vertical rod does not contact the bottom of the shell, and the mark post is not in the starting position.
When the marker post is not at the initial position, the power wheel needs to be rotated to lower the longitudinal rod, so that the marker post is at the initial position.
4.2 height H for adjusting the rise of the marker post Sign board
When the marker post is at the initial position, the diameter of the power wheel is fixed, and the power wheel rotates for a circle to enable the marker post to ascend or descend by a distance L Wheel Is fixed.
When the buoy floats on the liquid nitrogen, a part of the lower part of the buoy is immersed in the liquid nitrogen under the action of the gravity of the buoy, 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 the depth H Deep to Is stationary.
Therefore, the post needs to be raised to a height H Sign board
H Sign board ＝H Liquid for medical purpose -H Deep into
The number of turns n of the power wheel required to rotate,
n＝H sign board /L Wheel
After the power wheel rotates for n circles, the mark post rises to H Sign board Height of (2)
4.3 starting water pump
When the first sensor senses the scale on the buoy, the liquid level in the liquid nitrogen tank reaches H at present Liquid for treating urinary tract infection Without the addition of liquid nitrogen.
When the first sensor does not sense the scale on the buoy, the liquid level in the liquid nitrogen tank does not reach H currently Liquid for treating urinary tract infection The height of (a) requires the addition of liquid nitrogen. Starting the water pump until the first inductionThe gauge on the float is sensed by the sensor.
2. And placing a second inductor on the cross rod, wherein the second inductor is positioned right above the first cavity, the second inductor is a distance inductor, and the second inductor is used for inducing the distance between the cross rod and the top of the first cavity.
1. Placing device
An operator penetrates the monitoring device into a basket rail in a liquid nitrogen tank needing to be supplemented with liquid nitrogen at the notch of the second partition plate, the supporting plate is placed at the tank opening of the liquid nitrogen tank needing to be supplemented with liquid nitrogen, the water inlet of the water pumping pipe is placed into the liquid nitrogen tank serving as a liquid nitrogen source, and the water pumping pipe is fixed on the edge of the tank opening of the liquid nitrogen tank serving as the liquid nitrogen source through the notch below the support; the monitoring device is slowly descended until the monitoring device can not descend by rotating the handle of the shell, the lower part of the second clapboard is positioned at the uppermost basket, and the lower part of the second clapboard and the bottom of the inner side wall of the shell are positioned at the same horizontal plane, so the bottom of the inner side of the shell and the uppermost basket are positioned at the same horizontal plane.
2. The operator inputs the height H between the distance from the uppermost basket to which the liquid nitrogen is expected to be added through the touch screen display Liquid for medical purpose And length L of the cap plug Plug for medical use 。
3. In the same device, the length L of the shell of the used monitoring device 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 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 。
3.1 calculate the height H of the monitoring device's housing into the liquid Nitrogen canister 1
L Shell -(L 1 +d)＝H 1
3.2 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 to the cross bar, and when the longitudinal bar touches the bottom of the housing, the distance d sensed by the second sensor is the distance between the cross bar and the top of the first cavity, and the distance d is fixed in the same device.
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.
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 into
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 3 ，
When L is 3 >H Sign board When the vertical rod is lowered to L, the power wheel rotates to lower the vertical rod 3 ＝H Sign board ，
When L is 3 <H Sign board When the vertical rod is lifted to L, the power wheel rotates to lift the vertical rod 3 ＝H Sign board ，
When it reaches L 3 ＝H Sign board Second sensor sensing
4.3 starting water pump
When the first sensor senses the scale on the buoy, the liquid level in the liquid nitrogen tank reaches H at present Liquid for treating urinary tract infection Without the addition of liquid nitrogen.
When the first sensor does not sense the scale on the buoy, the liquid level in the liquid nitrogen tank does not reach H currently Liquid for treating urinary tract infection The height of (a) requires the addition of liquid nitrogen. The suction pump is started until the first sensor senses the scale on the float.
To sum up, the utility model firstly obtains the height signal of each height parameter in the liquid nitrogen tank through the measurement of the 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 utility model controls the start and stop of the water pump through the signal processing system based on the height of the liquid nitrogen, thereby controlling the addition of the liquid nitrogen, and the utility model has high practicability and automation degree; 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. When the device is used, an operator penetrates the monitoring device into a basket rail in a liquid nitrogen tank needing to be supplemented with liquid nitrogen at the notch of the second partition plate, then puts a water inlet of the water pumping pipe into the liquid nitrogen tank serving as a liquid nitrogen source, and fixes the water inlet at the edge of the tank opening of the liquid nitrogen tank of the liquid nitrogen source through the notch below the bracket; the monitoring device slowly descends until the monitoring device cannot descend by rotating the shell handle, the height of the uppermost basket of the liquid nitrogen tank needs to be immersed through the display, the water suction pump is automatically started by the device, the liquid nitrogen amount in the liquid nitrogen tank reaches the set liquid nitrogen height, samples stored in the uppermost basket of the liquid nitrogen tank can also be safely and effectively soaked in the liquid nitrogen, and the storage quality of biological samples is ensured. After the adding is finished, when the device is automatically stopped, the piston of the water outlet blocks the water outlet under the action of the spring, so that the phenomenon that excessive liquid nitrogen is added and the cover plug cannot be placed in a liquid nitrogen tank is avoided; after the addition is finished, an operator takes out the whole device from the liquid nitrogen tank through a handle. 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 adds device which characterized in that: the device comprises a supporting plate, a monitoring device, a water pump, a signal processing system, a display and a battery;
the monitoring device is embedded and fixed in the supporting plate;
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.
2. The liquid nitrogen adding device according to claim 1, wherein: the monitoring device comprises a shell, a power wheel, a fixed wheel, an inductor, a mark post and a buoy; the power wheel and the sensor are both connected with the signal processing system.
3. The liquid nitrogen adding device according to claim 2, characterized in that: the shell is a cylinder, and a plurality of holes are arranged on the wall of the shell.
4. The liquid nitrogen adding device according to claim 2, characterized in that: the shell is of a net structure.
5. The liquid nitrogen adding device according to claim 2, characterized in that: 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.
6. The liquid nitrogen adding device according to claim 5, wherein: the lateral wall of shell is equipped with the helicitic texture, the shell divide into first lacuna and second lacuna through first baffle.
7. The liquid nitrogen adding device according to claim 6, 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.
8. The liquid nitrogen adding device according to claim 6, 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.
9. The liquid nitrogen adding device according to claim 8, 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.
10. The liquid nitrogen addition device according to claim 1, characterized in that: the support is connected below the supporting plate, and a support head provided with a bayonet is connected below the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382880.XU CN217816180U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221382880.XU CN217816180U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen adding device |
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| Publication Number | Publication Date |
|---|---|
| CN217816180U true CN217816180U (en) | 2022-11-15 |
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| CN202221382880.XU Active CN217816180U (en) | 2022-06-02 | 2022-06-02 | Liquid nitrogen adding device |
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