CN202532179U - Fully-automatic liquid nitrogen adding device - Google Patents
Fully-automatic liquid nitrogen adding device Download PDFInfo
- Publication number
- CN202532179U CN202532179U CN201220177393XU CN201220177393U CN202532179U CN 202532179 U CN202532179 U CN 202532179U CN 201220177393X U CN201220177393X U CN 201220177393XU CN 201220177393 U CN201220177393 U CN 201220177393U CN 202532179 U CN202532179 U CN 202532179U
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- liquid nitrogen
- container
- air pump
- micro air
- temperature
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Abstract
The utility model discloses a fully-automatic liquid nitrogen adding device. A temperature sensor (7) is arranged inside a liquid nitrogen container (3) which is inside high-temperature superconductivity coils, and a liquid nitrogen conveying pipe (5) is arranged between a liquid nitrogen dewar (1) and the liquid nitrogen container (3) which is inside the high-temperature superconductivity coils. When liquid nitrogen inside the liquid nitrogen container (3) which is inside the high-temperature superconductivity coils achieves a low order, a liquid adding controller (2) gives an instruction of starting an opening switch of a micro air pump (4) by means of liquid nitrogen low order temperature critical value information transmitted by the temperature sensor (7), the micro air pump (4) is started, and the liquid nitrogen inside the liquid nitrogen dewar (1) is pressed into the liquid nitrogen container (3) which is inside high-temperature superconductivity coils by air. When the liquid nitrogen inside the liquid nitrogen container (3) which is inside the high-temperature superconductivity coils achieves a high order, the liquid adding controller (2) gives an instruction of starting a closing switch of the micro air pump (4) by means of liquid nitrogen high order temperature critical value information transmitted by the temperature sensor (7) to stop adding of the liquid nitrogen. The liquid nitrogen can be added by hand or automatically and free of the influence of magnetic resonance magnetic fields and electric fields.
Description
Technical field
The utility model relates to a kind of full-automatic liquid nitrogen filling apparatus that applies to magnetic resonance.
Background technique
The form of foot-operated auto-pressurizing liquid nitrogen pump is adopted in the filling of early stage liquid nitrogen, and this mode that adds liquid nitrogen is continuous firing for a long time, and weight of equipment is bigger, and can't with the magnetic resonance equipment compatibility.And the another kind of method that relies on liquid level sensor to continue to add liquid nitrogen; Though can keep liquid level constant; But because the liquid level material is a magnetic material; Can't with magnetic resonance compatible, semiconductor temperature sensor commonly used can be easy under strong radiofrequency field and can damage, the temperature transducer of crystal oscillator type can't be worked under magnetic field.
Summary of the invention
The technical problem that the utility model will solve provides a kind of device and the controlling method that can carry out the liquid nitrogen filling automatically.
In order to solve the problems of the technologies described above, the utility model provides a kind of full-automatic liquid nitrogen filling apparatus, it mainly by Dewar container for liquefied nitrogen, add in fluid controller, the high temperature superconductor coil liquid nitrogen container and micro air pump and form; Be provided with temperature transducer in the high temperature superconductor coil in the liquid nitrogen container; Be provided with the liquid nitrogen delivery pipe in Dewar container for liquefied nitrogen and the high temperature superconductor coil between liquid nitrogen container; Be provided with air shooter between Dewar container for liquefied nitrogen and micro air pump, adding fluid controller can open or close micro air pump according to the information of sensor passes.
Be provided with automatic or manual liquid nitrogen filling switch and manual micro air pump switch in a kind of full-automatic liquid nitrogen filling apparatus of the utility model.Add the tutorial light that fluid controller is provided with liquid nitrogen container and micro air pump state in the indication high temperature superconductor coil.
Adopt said structure, its beneficial effect is: when adding the liquid nitrogen low level temperature threshold value information that fluid controller set in advance, time-delay being set sending and start the instruction that micro air pump is opened switch, it is too frequent to prevent that micro air pump from starting.When adding the high-order temperature threshold value information of liquid nitrogen that fluid controller set in advance, time-delay being set sending the instruction that starts the micro air pump off switch, this moment, the liquid level of liquid nitrogen in the time of time-delay can be kept stable.Device does not use magnetic material near high temperature superconductor coil, imaging does not have influence to magnetic resonance receive coil.Sensor can be installed in the high temperature superconductor coil any position in the liquid nitrogen container, and degrees of freedom is high.The use of micro air pump can guarantee accurately liquid feeding fast.24 hours fully automatic workings can make the liquid nitrogen capacity keep the long-term work state.The use of tutorial light can be monitored the state of the liquid nitrogen in the liquid nitrogen container in the high temperature superconductor coil and the working state of micro air pump.
Description of drawings
Fig. 1 is a kind of full-automatic liquid nitrogen filling apparatus structural representation of the utility model.
Fig. 2 is a kind of full-automatic liquid nitrogen filling apparatus structure principle chart of the utility model.
Fig. 3 is the automatic liquid feeding pattern of a kind of full-automatic liquid nitrogen filling apparatus of the utility model control principle figure.
Among the figure: the 1-Dewar container for liquefied nitrogen, 2-adds fluid controller, liquid nitrogen container in the 3-high temperature superconductor coil, 4-micro air pump, 5-liquid nitrogen delivery pipe, 6-air shooter, 7-temperature transducer.
Embodiment
According to shown in Figure 1, it mainly by Dewar container for liquefied nitrogen 1, add in fluid controller 2, the high temperature superconductor coil liquid nitrogen container 3 and micro air pump 4 and form.Be provided with one or more temperature transducers 7 in the high temperature superconductor coil in the liquid nitrogen container 3 from top to bottom, liquid nitrogen delivery pipe 5 one ends are stretched in the bottom of Dewar container for liquefied nitrogen 1 liquid nitrogen, and the other end reaches the bottom of the liquid nitrogen of liquid nitrogen container 3 in the high temperature superconductor coil.Air shooter 6 one ends are communicated with micro air pump 4 outlets, and the other end extend into Dewar container for liquefied nitrogen 1 top.Add fluid controller 2 and can open or close micro air pump 4 according to the information of temperature transducer transmission.Micro air pump 4 is the manual micro air pump switch of specialized designs also.
As shown in Figures 2 and 3, a kind of full-automatic liquid nitrogen filling apparatus of the utility model, it adds fluid controller 2 and can device be adjusted into and add liquid status and manual state of a control automatically.If open automatically or hydrodynamic nitrogen filling switch and it is adjusted into adds liquid status automatically; Then when the liquid nitrogen in the liquid nitrogen container in the high temperature superconductor coil 3 reaches low level; Design in advance; Add fluid controller 2 according to the temperature signal that is located at each position that the temperature transducer in the liquid nitrogen container 37 transmits in the high temperature superconductor coil; Liquid nitrogen low level temperature threshold value information with prior setting serves as to start the instruction that micro air pump 4 is opened switch, and micro air pump is opened, and air is sent into air in the Dewar container for liquefied nitrogen 1 through air shooter 6; Liquid nitrogen in the Dewar container for liquefied nitrogen 1 is sent in the high temperature superconductor coil in the liquid nitrogen container 3 through liquid nitrogen delivery pipe 5; When the liquid nitrogen in the liquid nitrogen container in the high temperature superconductor coil 3 attains to a high place, serve as the instruction that starts micro air pump 4 off switch with the high-order temperature threshold value information of the liquid nitrogen of prior setting, system stops to add liquid nitrogen immediately.
When liquid level falls back to low level once more, add fluid controller 2 and will delay time 30 minutes to 8 hours, the liquid nitrogen low level temperature threshold value information with prior setting serves as to start the instruction that micro air pump 4 is opened then, micro air pump is reworked once more.
If close automatic or manual liquid nitrogen filling switch and it is adjusted into manual state of a control, micro air pump 4 stops to add automatically liquid nitrogen simultaneously, then opens manual micro air pump switch control micro air pump 4 and adds liquid nitrogen.Close manual 4 of micro air pumps of micro air pump switch control and stop to add liquid nitrogen.
Claims (3)
1. full-automatic liquid nitrogen filling apparatus, it mainly by Dewar container for liquefied nitrogen (1), add in fluid controller (2), the high temperature superconductor coil liquid nitrogen container (3) and micro air pump (4) and form; Be provided with temperature transducer (7) in the liquid nitrogen container in the said high temperature superconductor coil (3); Be provided with liquid nitrogen delivery pipe (5) in said Dewar container for liquefied nitrogen (1) and the high temperature superconductor coil between liquid nitrogen container (3); Be provided with air shooter (6) between said Dewar container for liquefied nitrogen (1) and micro air pump (4), micro air pump (4) opened or closed to the said fluid controller (2) that adds can according to the information that temperature transducer (7) transmits.
2. full-automatic liquid nitrogen filling apparatus according to claim 1 is characterized in that: be provided with automatic or manual liquid nitrogen filling switch and manual micro air pump switch.
3. full-automatic liquid nitrogen filling apparatus according to claim 1 is characterized in that: saidly add the tutorial light that fluid controller (2) is provided with liquid nitrogen container (3) and micro air pump (4) state in the indication high temperature superconductor coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220177393XU CN202532179U (en) | 2012-04-25 | 2012-04-25 | Fully-automatic liquid nitrogen adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220177393XU CN202532179U (en) | 2012-04-25 | 2012-04-25 | Fully-automatic liquid nitrogen adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532179U true CN202532179U (en) | 2012-11-14 |
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ID=47133365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220177393XU Expired - Lifetime CN202532179U (en) | 2012-04-25 | 2012-04-25 | Fully-automatic liquid nitrogen adding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202532179U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661484A (en) * | 2012-04-25 | 2012-09-12 | 江苏美时医疗技术有限公司 | Full-automatic liquid nitrogen filling device and control method thereof |
| CN108536181A (en) * | 2018-05-03 | 2018-09-14 | 西南交通大学 | The liquid nitrogen of high-temperature superconductor band test machine for mechanism automatically controls device for supplying and method |
| CN110562502A (en) * | 2019-08-16 | 2019-12-13 | 上海卫星装备研究所 | Device and method for discharging redundant gas suitable for liquid nitrogen supply pipeline |
-
2012
- 2012-04-25 CN CN201220177393XU patent/CN202532179U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661484A (en) * | 2012-04-25 | 2012-09-12 | 江苏美时医疗技术有限公司 | Full-automatic liquid nitrogen filling device and control method thereof |
| CN108536181A (en) * | 2018-05-03 | 2018-09-14 | 西南交通大学 | The liquid nitrogen of high-temperature superconductor band test machine for mechanism automatically controls device for supplying and method |
| CN110562502A (en) * | 2019-08-16 | 2019-12-13 | 上海卫星装备研究所 | Device and method for discharging redundant gas suitable for liquid nitrogen supply pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160726 Granted publication date: 20121114 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170726 Granted publication date: 20121114 |
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| PD01 | Discharge of preservation of patent | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
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| CX01 | Expiry of patent term |