CN218469958U

CN218469958U - Cryostat with liquid level is reported to police and prediction function

Info

Publication number: CN218469958U
Application number: CN202221916890.7U
Authority: CN
Inventors: 刘卫滨
Original assignee: Dongfang Chenjing Nanjing Technology Co ltd
Current assignee: Dongfang Chenjing Nanjing Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-02-10
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a cryostat with liquid level warning and prediction function, which belongs to the technical field of liquid level detection, and comprises a foam plug, a singlechip and a display module, wherein the singlechip is arranged on the foam plug, the singlechip is electrically connected with the display module, a first pipeline is arranged in the foam plug, one end of the first pipeline penetrates through one side surface of the foam plug, a second pipeline is arranged in the first pipeline in a sliding way, a pressure spring is also arranged in the first pipeline, and the pressure spring is positioned above the second pipeline; through setting up the sealing plug, fill in the sealing plug into the entry of liquid nitrogen container, enough fix the device on the liquid nitrogen container, the second pipeline contacts bottom the liquid nitrogen container this moment, if the degree of depth of liquid nitrogen container is lighter, the second pipeline is restricted this moment, the second pipeline is for first pipeline rebound, has shortened the distance between second pipeline and the foam stopper, has also shortened the distance between platinum resistance and the foam stopper for the device can be applicable to the liquid nitrogen container of the different degree of depth.

Description

Cryostat with liquid level is reported to police and prediction function

Technical Field

The utility model belongs to the technical field of the liquid level detection, concretely relates to cryostat with liquid level is reported to police and prediction function.

Background

Liquid nitrogen is a liquid substance formed after nitrogen liquefaction, the temperature is-196 ℃, the liquid nitrogen can be widely used for storing biological samples, quick freezing and low-temperature physical research, the liquid nitrogen is generally stored in a special container such as a liquid nitrogen tank, the liquid nitrogen in the container can be slowly reduced due to the volatilization characteristic of the liquid nitrogen, the residual amount of the liquid nitrogen can be known only by periodically opening and checking, the common measurement mode of the liquid nitrogen liquid level is position measurement, the liquid nitrogen position is judged by utilizing the difference of the temperatures above and below the liquid level of the liquid nitrogen, a built-in liquid nitrogen level monitoring device disclosed in Chinese patent application publication No. CN208833331U describes a device for judging the liquid nitrogen liquid level based on the position measurement principle, a stainless steel tube is used for penetrating through a foam plug to be kept vertical, a platinum resistor array extends downwards through the stainless steel tube to be vertically arranged, so as to detect the position of the liquid nitrogen, but the stainless steel tube is relatively fixed and cannot be suitable for liquid nitrogen containers with different depths, and therefore improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cryostat with liquid level is reported to police and prediction function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a cryostat with liquid level is reported to police and prediction function, includes foam stopper, singlechip and display module, the singlechip sets up on the foam stopper, singlechip and display module electric connection, be provided with first pipeline in the foam stopper, the one end of first pipeline runs through a side of foam stopper, it is provided with the second pipeline to slide in the first pipeline, still be provided with pressure spring in the first pipeline, pressure spring is located the top of second pipeline, be provided with platinum resistance in the second pipeline, electric connection has the wire on the platinum resistance, the one end and the singlechip electric connection of wire.

As a preferred embodiment, the inner cavity of the first pipeline is T-shaped, a limit ring is slidably disposed in the first pipeline, the limit ring is connected to the second pipeline, and the limit ring is located between the second pipeline and the pressure spring.

As a preferred embodiment, the number of the platinum resistors is multiple, the platinum resistors are uniformly distributed in the second pipeline from top to bottom, and the platinum resistors are all electrically connected to the conducting wire.

In a preferred embodiment, the pressure spring is slidably connected to an inner wall surface of the first duct.

In a preferred embodiment, the lead is located inside the first pipe, the second pipe, the limiting ring and the pressure spring.

In a preferred embodiment, a sealing plug is arranged in the limiting ring, the sealing plug is sleeved on the wire, and the sealing plug is located above the platinum resistors.

In a preferred embodiment, the foam plug is provided with an upper cover, and the display module is arranged on a side of the upper cover away from the foam plug.

Compared with the prior art, the beneficial effects of the utility model are that:

this cryostat with liquid level is reported to police and prediction function is through setting up the sealing plug, fill in the entry of liquid nitrogen container with the sealing plug, enough fix the device on the liquid nitrogen container, second pipeline and liquid nitrogen container bottom contact this moment, if the degree of depth of liquid nitrogen container is lighter, the second pipeline is restricted this moment, the second pipeline upwards moves for first pipeline, the distance between second pipeline and the foam stopper has been shortened, the distance between platinum resistance and the foam stopper has also been shortened, make the device can be applicable to the liquid nitrogen container of the different degree of depth.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2;

fig. 4 is an enlarged schematic structural diagram of the present invention at B in fig. 2.

In the figure: 1. a foam plug; 2. a single chip microcomputer; 3. a display module; 4. a first conduit; 5. a second conduit; 6. a pressure spring; 7. a platinum resistor; 8. a wire; 9. a limiting ring; 10. a sealing plug; 11. and (7) covering.

Detailed Description

Embodiment one, please refer to fig. 1-4, the present invention provides a cryostat with liquid level alarm and prediction function, comprising a foam plug 1, a single chip microcomputer 2 and a display module 3, the single chip microcomputer 2 is disposed on the foam plug 1, the single chip microcomputer 2 is electrically connected to the display module 3, a first pipe 4 is disposed in the foam plug 1, one end of the first pipe 4 penetrates through one side surface of the foam plug 1, a second pipe 5 is slidably disposed in the first pipe 4, a pressure spring 6 is further disposed in the first pipe 4, the pressure spring 6 is disposed above the second pipe 5, a platinum resistor 7 is disposed in the second pipe 5, a wire 8 is electrically connected to the platinum resistor 7, one end of the wire 8 is electrically connected to the single chip microcomputer 2, the platinum resistors 7 are plural, the platinum resistors 7 are uniformly distributed in the second pipe 5 from top to bottom, and the platinum resistors 7 are all electrically connected to the wire 8, the foam plug 1 is pushed towards the inlet of the liquid nitrogen container, at the moment, the second pipeline 5 is firstly contacted with the bottom of the liquid nitrogen container, along with the continuous pushing of the foam plug 1, the second pipeline 5 can move upwards relative to the first pipeline 4 under the extrusion, the distance between the second pipeline 5 and the foam plug 1 is shortened, the liquid nitrogen container can be suitable for liquid nitrogen containers with different depths, as the temperature in the liquid nitrogen solution and the temperature above the liquid level of the liquid nitrogen have certain temperature difference, when the liquid nitrogen solution in the liquid nitrogen container continuously decreases, the temperature induced by the platinum resistors 7 in the second pipeline 5 is different, namely, the values generated by the platinum resistors 7 above the liquid level of the liquid nitrogen and the platinum resistors 7 below the liquid level of the liquid nitrogen are different, and are transmitted to the singlechip 2 through a lead 8, the accurate liquid level value is obtained by utilizing the resistance value read by the singlechip 2 to calculate and can be displayed through the display module 3, the alarm effect is achieved, the inner cavity of the first pipeline 4 is in a T shape, a limiting ring 9 is arranged in the first pipeline 4 in a sliding mode, the limiting ring 9 is connected with the second pipeline 5, the limiting ring 9 is located between the second pipeline 5 and the pressure spring 6, the limiting ring 9 and the T-shaped inner cavity of the first pipeline 4 are arranged in the limiting ring 9, the second pipeline 5 can be prevented from being separated from the first pipeline 4, the pressure spring 6 can push the second pipeline 5 to reset and is convenient to reuse, the pressure spring 6 is in sliding connection with the inner wall surface of the first pipeline 4, the pressure spring 6 can be prevented from being twisted after being extruded, the service life of the pressure spring is ensured, the lead 8 is located in the first pipeline 4, the second pipeline 5, the limiting ring 9 and the pressure spring 6 are arranged inside the first pipeline 4 and the second pipeline 5, the safety of the lead 8 is ensured, a sealing plug 10 is arranged in the limiting ring 9, the sealing plug 10 is connected to the lead 8 in a sleeved mode, the sealing plug 10 is located above the platinum resistors 7, liquid nitrogen can be prevented from entering the second pipeline, the normal detection of the platinum resistors 7 is ensured, an upper cover 11 is arranged on the upper side face of the display module 3, and the foam plug 11 is convenient to be taken out through the foam plug 1.

When the device is used, the foam plug 1 is inserted into the liquid nitrogen container, the second pipeline 5 is in contact with the bottom of the liquid nitrogen container, the foam plug 1 is continuously pushed, at the moment, the second pipeline 5 moves upwards relative to the first pipeline 4 and can drive the platinum resistors 7 to move upwards, when liquid nitrogen solution in the liquid nitrogen container continuously decreases, the values generated by the platinum resistors 7 above the liquid nitrogen liquid level and the platinum resistors 7 below the liquid nitrogen liquid level are different, the values are transmitted to the single chip microcomputer 2 through the conducting wire 8, and the accurate liquid level value is obtained through the resistance value calculation read by the single chip microcomputer 2 and can be displayed through the display module 3.

Claims

1. A low temperature thermostat with liquid level warning and prediction function which characterized in that: including foam stopper (1), singlechip (2) and display module (3), singlechip (2) set up on foam stopper (1), singlechip (2) and display module (3) electric connection, be provided with first pipeline (4) in foam stopper (1), a side of foam stopper (1) is run through to the one end of first pipeline (4), it is provided with second pipeline (5) to slide in first pipeline (4), still be provided with pressure spring (6) in first pipeline (4), pressure spring (6) are located the top of second pipeline (5), be provided with platinum resistance (7) in second pipeline (5), electric connection has wire (8) on platinum resistance (7), the one end and the singlechip (2) electric connection of wire (8).

2. The cryostat with liquid level alarming and predicting functions as recited in claim 1, wherein: the inner cavity of the first pipeline (4) is T-shaped, a limiting ring (9) is arranged in the first pipeline (4) in a sliding mode, the limiting ring (9) is connected with the second pipeline (5), and the limiting ring (9) is located between the second pipeline (5) and the pressure spring (6).

3. The cryostat with liquid level alarming and predicting functions as recited in claim 1, wherein: the number of the platinum resistors (7) is multiple, the platinum resistors (7) are uniformly distributed in the second pipeline (5) from top to bottom, and the platinum resistors (7) are electrically connected with the lead (8).

4. The cryostat with liquid level alarming and predicting functions as recited in claim 1, wherein: the pressure spring (6) is connected with the inner wall surface of the first pipeline (4) in a sliding mode.

5. The cryostat with liquid level alarming and predicting functions as recited in claim 2, wherein: the lead (8) is positioned inside the first pipeline (4), the second pipeline (5), the limiting ring (9) and the pressure spring (6).

6. The cryostat with liquid level alarming and predicting functions as recited in claim 2, wherein: a sealing plug (10) is arranged in the limiting ring (9), the sealing plug (10) is sleeved on the lead (8), and the sealing plug (10) is located above the platinum resistors (7).

7. The cryostat with liquid level alarming and predicting functions as recited in claim 1, wherein: an upper cover (11) is arranged on the foam plug (1), and the display module (3) is arranged on one side face, far away from the foam plug (1), of the upper cover (11).