CN213146086U - Liquid nitrogen container valve unit - Google Patents
Liquid nitrogen container valve unit Download PDFInfo
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- CN213146086U CN213146086U CN202021980718.9U CN202021980718U CN213146086U CN 213146086 U CN213146086 U CN 213146086U CN 202021980718 U CN202021980718 U CN 202021980718U CN 213146086 U CN213146086 U CN 213146086U
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- pipe
- nitrogen
- liquid nitrogen
- liquid
- electromagnetic valve
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Abstract
The utility model discloses a liquid nitrogen container control valve group, which comprises a liquid inlet pipe and a nitrogen discharge pipe, wherein the inlet end of the nitrogen discharge pipe is connected with the middle part of the liquid inlet pipe; the rear end of the liquid inlet pipe is provided with a first electromagnetic valve and a second electromagnetic valve which are connected in series; the front end of the nitrogen discharge pipe is connected with a temperature sensor, and the middle part of the nitrogen discharge pipe is provided with a third electromagnetic valve; first solenoid valve, the second solenoid valve, temperature sensor and third solenoid valve electricity are connected with central controller, behind external liquid nitrogen container is connected to the feed liquor pipe, when beginning the feed liquor, temperature sensor detects the liquid nitrogen temperature of letting out nitrogen pipe department earlier, when the temperature is higher than the setting value, the high liquid nitrogen of temperature is arranged to the third solenoid valve opening, when temperature sensor detects the liquid nitrogen temperature and falls to the setting value, close the third solenoid valve, open first solenoid valve and second solenoid valve, pour into the liquid nitrogen into to the liquid nitrogen container, avoid influencing the temperature degree of consistency of liquid nitrogen container, moreover, the steam generator is simple in structure, the workman can not be close to feed liquor pipe and liquid nitrogen container through the central controller control of installing at the distal end, ensure workman's operation safety.
Description
Technical Field
The utility model relates to a cryoconservation apparatus technical field especially relates to a valve unit of liquid nitrogen container.
Background
In the biomedical industry, prepared biological samples, such as cells, blood, etc., are generally stored in liquid nitrogen containers to preserve their biological activity. The liquid nitrogen container is provided with a liquid inlet pipe and a manual valve which are communicated with the outside, when liquid nitrogen needs to be injected into the liquid nitrogen container, the liquid inlet pipe is communicated with an outside liquid nitrogen tank, the manual valve is opened for injection, the manual valve is closed after the liquid nitrogen is injected, the liquid inlet pipe is disconnected from the liquid nitrogen tank, the structure is simple, the use is wide, but the manual operation is required by workers, and certain danger exists; in addition, when liquid nitrogen is injected into the liquid nitrogen container at the beginning, the liquid nitrogen is gasified due to the fact that the pipeline is hot, and certain influence is caused on the temperature uniformity of the tank body.
Therefore, those skilled in the art have devoted themselves to develop a valve group for a liquid nitrogen container which is highly automated and convenient for remote control.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the technical problem to be solved in the utility model is to provide a degree of automation is high, make things convenient for remote control's the valve unit of liquid nitrogen container.
In order to achieve the purpose, the utility model provides a liquid nitrogen container control valve group, which comprises a liquid inlet pipe and a nitrogen discharge pipe, wherein the inlet end of the nitrogen discharge pipe is connected with the middle part of the liquid inlet pipe; the rear end of the liquid inlet pipe is provided with a first electromagnetic valve and a second electromagnetic valve which are connected in series; the front end of the nitrogen discharge pipe is connected with a temperature sensor, and the middle part of the nitrogen discharge pipe is provided with a third electromagnetic valve; the first electromagnetic valve, the second electromagnetic valve, the temperature sensor and the third electromagnetic valve are electrically connected with a central controller.
And a silencer is also arranged at the outlet end of the nitrogen discharge pipe.
The nitrogen discharge pipe is connected with a third three-way pipe, one end of the third three-way pipe is connected with the liquid inlet pipe, the other end of the third three-way pipe is connected with the temperature sensor, and the other end of the third three-way pipe is connected with the nitrogen discharge pipe.
The inlet end of the liquid inlet pipe is connected with one end of a first three-way pipe, and the other two ends of the first three-way pipe are respectively connected with a first joint and a second joint.
The front end of the liquid inlet pipe is also connected with a filter in series, and the filter is positioned in front of the inlet end of the nitrogen discharge pipe.
The rear end of the liquid inlet pipe is positioned in front of the first electromagnetic valve and is also provided with a safety valve.
The middle part of the liquid inlet pipe is provided with a second three-way pipe, the inlet end of the nitrogen discharge pipe is connected with one end of the second three-way pipe, and the other two ends of the second three-way pipe are respectively connected with the filter and the safety valve.
The utility model discloses a nitrogen discharging device, including a support, a feed liquor pipe, a nitrogen discharging pipe, a first solenoid valve, a second solenoid valve and a third solenoid valve, the feed liquor pipe, the nitrogen discharging pipe, a first solenoid valve, a second solenoid valve and a third solenoid valve are installed on the support, the front end of feed liquor pipe is fixed on the support through a first pipe clamp, the rear end of feed liquor pipe is fixed on the support through a second pipe clamp, the middle part of nitrogen discharging pipe is fixed on the support through a third pipe clamp, the rear end of nitrogen discharging pipe is fixed on the support through a fourth pipe clamp.
The utility model has the advantages that: the liquid nitrogen container control valve group of the utility model comprises a liquid inlet pipe and a nitrogen discharge pipe with an inlet end connected with the middle part of the liquid inlet pipe; the rear end of the liquid inlet pipe is provided with a first electromagnetic valve and a second electromagnetic valve which are connected in series; the front end of the nitrogen discharge pipe is connected with a temperature sensor, and the middle part of the nitrogen discharge pipe is provided with a third electromagnetic valve; the first electromagnetic valve, the second electromagnetic valve, temperature sensor and third electromagnetic valve electricity are connected with central controller, after the external liquid nitrogen container is connected to the feed liquor pipe, when beginning the feed liquor, temperature sensor detects the liquid nitrogen temperature of nitrogen leakage pipe department earlier, when the temperature is higher than the setting value, the high liquid nitrogen of temperature is arranged to the third electromagnetic valve opening, when temperature sensor detects the liquid nitrogen temperature and falls to the setting value, then the precooling process that means whole control valves is accomplished, close the third electromagnetic valve this moment, open first electromagnetic valve and second electromagnetic valve, pour into the liquid nitrogen container, avoid influencing the temperature degree of consistency of liquid nitrogen container, moreover, the steam generator is simple in structure, the workman can not be close to feed liquor pipe and liquid nitrogen container through the central controller control of installing at the distal end, ensure workman's operation safety.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, a liquid nitrogen container control valve set comprises a liquid inlet pipe 1 and a nitrogen discharge pipe 2 with an inlet end connected to the middle of the liquid inlet pipe 1; the rear end of the liquid inlet pipe 1 is provided with a first electromagnetic valve 3 and a second electromagnetic valve 4 which are connected in series; the front end of the nitrogen discharge pipe 2 is connected with a temperature sensor 7, and the middle part is provided with a third electromagnetic valve 5; the first electromagnetic valve 3, the second electromagnetic valve 4, the temperature sensor 7 and the third electromagnetic valve 5 are electrically connected with a central controller, because the temperature of the whole control valve group is higher in the initial state, if liquid nitrogen is directly injected into a liquid nitrogen container, the liquid nitrogen can be gasified, and the temperature uniformity of the liquid nitrogen container can be influenced, after the liquid inlet pipe 1 is connected with an external liquid nitrogen tank, when the liquid inlet is started, the temperature sensor 7 firstly detects the liquid nitrogen temperature at the nitrogen outlet pipe 2, when the temperature is higher than a set value, the third electromagnetic valve 5 is opened to discharge the liquid nitrogen with high temperature, when the temperature sensor 7 detects that the liquid nitrogen temperature is reduced to the set value, the precooling process of the whole control valve group is finished, at the moment, the third electromagnetic valve 5 is closed, the first electromagnetic valve 3 and the second electromagnetic valve 4 are opened, the liquid nitrogen is injected into the liquid nitrogen container, and the, the structure is simple, workers can not be close to the liquid inlet pipe 1 and the liquid nitrogen tank under the control of the central controller arranged at the far end, and the operation safety of the workers is ensured.
In this embodiment, the outlet end of the nitrogen discharging pipe 2 is further provided with a silencer 6, so that no large noise is generated when the redundant liquid nitrogen at the front end of the liquid inlet pipe 1 is discharged.
The nitrogen discharge pipe 2 is connected with a third three-way pipe 12, one end of the third three-way pipe 12 is connected with the liquid inlet pipe 1, the other end of the third three-way pipe is connected with the temperature sensor 7, and the other end of the third three-way pipe is connected with the nitrogen discharge pipe 2.
The inlet end of the liquid inlet pipe 1 is connected with one end of a first three-way pipe 8, the other two ends of the first three-way pipe 8 are respectively connected with a first joint 9 and a second joint 10, the first joint 9 and the second joint 10 are mutually backup, and the normal use of the liquid inlet pipe 1 is ensured constantly; the middle part of the liquid inlet pipe 1 is provided with a second three-way pipe 11, the inlet end of the nitrogen discharging pipe 2 is connected with one end of the second three-way pipe 11, and the other two ends of the second three-way pipe 11 are respectively connected with a filter 13 and a safety valve 14.
The front end of the liquid inlet pipe 1 is also connected with a filter 13 in series, and the filter 13 is positioned in front of the inlet end of the nitrogen discharge pipe 2, so that the purity of liquid nitrogen entering the liquid inlet pipe 1 is ensured, and pollution is avoided.
The safety valve 14 is further arranged in front of the first electromagnetic valve 3 at the rear end of the liquid inlet pipe 1, normal pressure of the liquid inlet pipe is guaranteed, the first electromagnetic valve 3 and the second electromagnetic valve 4 cannot be damaged due to overlarge pressure, meanwhile, the first electromagnetic valve 3 and the second electromagnetic valve 4 are mutually backed up, and the liquid inlet pipe 1 cannot be controlled by one electromagnetic valve.
In this embodiment, feed liquor pipe 1, let nitrogen pipe 2, first solenoid valve 3, second solenoid valve 4 and third solenoid valve 5 install on a support 15, the front end of feed liquor pipe 1 is fixed on support 15 through a first pipe clamp 16, the rear end of feed liquor pipe 1 is fixed on support 15 through a second pipe clamp 17, let nitrogen pipe 2's middle part fix on support 15 through a third pipe clamp 18, let nitrogen pipe 2's rear end fix on support 15 through a fourth pipe clamp 19, moreover, the steam generator is simple in structure, it is fixed firm.
The utility model discloses a theory of operation is:
after external liquid nitrogen container is connected at feed liquor pipe 1, when beginning the feed liquor, temperature sensor 7 detects the liquid nitrogen temperature of letting out nitrogen pipe 2 department earlier, when the temperature is higher than the setting value, third solenoid valve 5 opens and arranges the liquid nitrogen that the temperature is high, when temperature sensor 7 detects liquid nitrogen temperature and drops to the setting value, then mean that the precooling process of whole control valves is accomplished, close third solenoid valve 5 this moment, open first solenoid valve 3 and second solenoid valve 4, pour into the liquid nitrogen into to the liquid nitrogen container, avoid influencing the temperature degree of consistency of liquid nitrogen container, moreover, the steam generator is simple in structure, the workman can not be close to feed liquor pipe 1 and liquid nitrogen container through the central controller control of installing at the distal end, ensure workman's operation safety.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The utility model provides a liquid nitrogen container valve unit which characterized in that: comprises a liquid inlet pipe (1) and a nitrogen discharge pipe (2) with the inlet end connected with the middle part of the liquid inlet pipe (1); the rear end of the liquid inlet pipe (1) is provided with a first electromagnetic valve (3) and a second electromagnetic valve (4) which are connected in series; the front end of the nitrogen discharge pipe (2) is connected with a temperature sensor (7), and the middle part of the nitrogen discharge pipe is provided with a third electromagnetic valve (5); the first electromagnetic valve (3), the second electromagnetic valve (4), the temperature sensor (7) and the third electromagnetic valve (5) are electrically connected with a central controller.
2. The set of liquid nitrogen container control valves of claim 1, wherein: and a silencer (6) is also arranged at the outlet end of the nitrogen discharge pipe (2).
3. The set of liquid nitrogen container control valves of claim 1, wherein: the nitrogen discharge pipe (2) is connected with a third three-way pipe (12), one end of the third three-way pipe (12) is connected with the liquid inlet pipe (1), the other end of the third three-way pipe is connected with the temperature sensor (7), and the other end of the third three-way pipe is connected with the nitrogen discharge pipe (2).
4. The set of liquid nitrogen container control valves of claim 1, wherein: the inlet end of the liquid inlet pipe (1) is connected with one end of a first three-way pipe (8), and the other two ends of the first three-way pipe (8) are respectively connected with a first joint (9) and a second joint (10).
5. The set of liquid nitrogen container control valves of claim 1, wherein: the front end of the liquid inlet pipe (1) is also connected with a filter (13) in series, and the filter (13) is positioned in front of the inlet end of the nitrogen leakage pipe (2).
6. The set of liquid nitrogen container control valves of claim 5, wherein: the rear end of the liquid inlet pipe (1) is positioned in front of the first electromagnetic valve (3) and is also provided with a safety valve (14).
7. The set of liquid nitrogen container control valves of claim 6, wherein: the middle part of the liquid inlet pipe (1) is provided with a second three-way pipe (11), the inlet end of the nitrogen discharge pipe (2) is connected with one end of the second three-way pipe (11), and the other two ends of the second three-way pipe (11) are respectively connected with the filter (13) and the safety valve (14).
8. The set of liquid nitrogen container control valves of claim 1, wherein: the utility model discloses a nitrogen leakage device, including support (15), feed liquor pipe (1), let out nitrogen pipe (2), first solenoid valve (3), second solenoid valve (4) and third solenoid valve (5) and install on a support (15), the front end of feed liquor pipe (1) is fixed through a first pipe clamp (16) on support (15), the rear end of feed liquor pipe (1) is fixed through a second pipe clamp (17) on support (15), the middle part of letting out nitrogen pipe (2) is fixed through a third pipe clamp (18) on support (15), the rear end of letting out nitrogen pipe (2) is fixed through a fourth pipe clamp (19) on support (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021980718.9U CN213146086U (en) | 2020-09-10 | 2020-09-10 | Liquid nitrogen container valve unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021980718.9U CN213146086U (en) | 2020-09-10 | 2020-09-10 | Liquid nitrogen container valve unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213146086U true CN213146086U (en) | 2021-05-07 |
Family
ID=75710973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021980718.9U Active CN213146086U (en) | 2020-09-10 | 2020-09-10 | Liquid nitrogen container valve unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213146086U (en) |
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2020
- 2020-09-10 CN CN202021980718.9U patent/CN213146086U/en active Active
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