CN207099418U - A kind of superconducting cyclotron clack box - Google Patents
A kind of superconducting cyclotron clack box Download PDFInfo
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- CN207099418U CN207099418U CN201720905426.0U CN201720905426U CN207099418U CN 207099418 U CN207099418 U CN 207099418U CN 201720905426 U CN201720905426 U CN 201720905426U CN 207099418 U CN207099418 U CN 207099418U
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- liquid helium
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Abstract
The utility model belongs to superconducting cyclotron field.For competitiveness of the lifting medical proton therapy accelerator in China in future market, reduce use cost, the utility model provides a kind of superconducting cyclotron clack box, including liquid helium condenser, cold screen, exterior vacuum chamber, liquid helium delivery pipe, wire and some refrigeration machines, the liquid helium condenser is located inside cold screen, and the cold screen is located inside exterior vacuum chamber；The liquid helium delivery pipe and wire both pass through exterior vacuum chamber's wall and liquid helium condenser wall, and are drawn via the fairlead of liquid helium condenser；The cold screen includes open-topped cold screen body and cold screen top plate.Superconducting cyclotron clack box of the present utility model can carry out helium condensation, realize that liquid helium recycles, solve the problems, such as that superconducting magnet cooling liquid helium dosage is excessive, advantageously reduce use cost, improve competitiveness of the medical proton therapy accelerator in China in future market.
Description
Technical field
The utility model belongs to superconducting cyclotron field, more particularly to a kind of superconducting cyclotron clack box.
Background technology
Cyclotron is a kind of particle accelerator, and it returns charged particle using magnetic field and the collective effect of electric field
Rotation motion, and the device accelerated repeatedly to the charged particle of circumnutation with high-frequency electric field.Wherein, superconducting cyclotron
It is the nucleus equipment of current medical proton therapy accelerator.
Medical proton therapy accelerator is the most advanced radiotherapy equipment in the world today, and it can utilize microcosmic matter
Son, Heavy ion beam treatment tumour, it is evident in efficacy, there is good development prospect and huge commercial value, it is only individual at present
Other developed country grasps and applies the technology；And China is in the development stage, mature technology there is no to be available for using.But for
Commercial interest etc. considers that many key technologies about medical proton therapy accelerator are not disclosed so far so that China
Development work need to break through relevant key technology one by one and can just be accomplished, and superconducting cyclotron clack box is
One of them.
The magnetic field of superconducting cyclotron is mainly provided by superconducting coil, and superconducting coil, which enters superconducting state, needs necessarily low
Warm condition, if being unsatisfactory for the cryogenic conditions of superconducting coil, superconducting coil will quench, and influence making for superconducting cyclotron
With, when serious even superconducting coil burnout failure can occur.
To solve this problem, generally it is contemplated that forming this cryogenic conditions using liquid helium.But China's helium provides
Source famine, the supply of liquid helium rely primarily on external import, and import price is expensive, therefore superconducting coil is entered using liquid helium
, it is necessary to the usage amount of liquid helium be reduced as far as possible, so as to cost squeeze during row cooling.
At present, foreign countries have uses clack box to reduce the design of liquid helium dosage, but because it does not have on superconducting cyclotron
There is the specific design structure of detailed disclosure clack box, therefore can not be subject in the development process of the medical proton therapy accelerator in China
Using, reference.Based on this reality, to competitiveness of the lifting medical proton therapy accelerator in China in future market, drop
A kind of low use cost, it is necessary to superconducting cyclotron clack box of self-developing.
Utility model content
For competitiveness of the lifting medical proton therapy accelerator in China in future market, use cost, this practicality are reduced
It is new to provide a kind of superconducting cyclotron clack box.
The clack box includes liquid helium condenser, cold screen, exterior vacuum chamber, liquid helium delivery pipe, wire and some refrigeration machines, the liquid
Helium condenser is located inside cold screen, and the cold screen is located inside exterior vacuum chamber；The liquid helium condenser is closed container, and it passes through
Some liquid helium condenser suspension rods are suspended in below exterior vacuum chamber's top plate, and fairlead is additionally provided with the liquid helium condenser；It is described cold
Correspond on screen body at the fairlead and be provided with opening；Correspond in the exterior vacuum chamber at the fairlead and be provided with extension tube attached
Road, bleeding point is additionally provided with exterior vacuum chamber；The liquid helium delivery pipe and wire both pass through exterior vacuum chamber's wall and liquid helium condenser wall,
And drawn via the fairlead of liquid helium condenser；The cold screen includes open-topped cold screen body and cold screen top plate, described cold
If screen body is suspended in below exterior vacuum chamber's top plate by dry and cold screen body suspension rod；The wire is located at exterior vacuum chamber's wall and liquid helium is cold
Part between condenser wall, can also be laid with indium-aluminium nitride-indium sandwich on its partial outer face, and sandwich
Another side is in contact with cold screen top plate；Exterior vacuum chamber's top plate inserts pipe, the cold head of each refrigeration machine provided with some refrigeration machines
Pipe is inserted by refrigeration machine to stretch into inside exterior vacuum chamber, the cold head of each refrigeration machine is connected by Heat Conduction Material with liquid helium condenser；
The cold screen top plate is fixedly connected between inserting pipe with each refrigeration machine.
It is preferred that heater and temperature sensor are additionally provided with the liquid helium condenser outer walls, during to quench problem
Monitoring temperature and heating are carried out to liquid helium condenser.
It is preferred to be additionally provided with pressure-reducing valve on the liquid helium condenser, discharges pressure during to quench.
The quantity of the liquid helium condenser suspension rod and the quantity of cold screen body suspension rod are both preferably 4, and uniformly arrangement, with
Preferably suspention balance is provided.
The material of the liquid helium condenser suspension rod and cold screen body suspension rod is preferably glass fibre.
It is preferred that some conduction cooling band connections are used between the cold screen top plate and cold screen body, to cool down cold screen body.
It is preferred that heat-insulating material is also wrapped on the cold screen body outer wall, further reduces the transmission of heat.
It is preferred to be additionally provided with temperature sensor on the cold screen body outer wall, to cold screen body during to quench problem
Temperature is monitored.
It is preferred to be additionally provided with indium pad between the cold head and the Heat Conduction Material of each refrigeration machine, further improves heat conduction
Efficiency.
In summary, superconducting cyclotron clack box of the present utility model can carry out helium condensation, realize that liquid helium circulates
Use, solve the problems, such as that superconducting magnet cooling liquid helium dosage is excessive, advantageously reduce use cost, improve the medical matter in China
Competitiveness of the son treatment accelerator in future market.
Brief description of the drawings
Fig. 1 superconducting cyclotron valve box structure schematic diagrames of the present utility model.
Reference：1. liquid helium condenser, 2. exterior vacuum chamber, 3. liquid helium delivery pipes, 4. wires, 5. refrigeration machines, 6. liquid heliums
Condenser suspension rod, 7. fairleads, 8. openings, 9. external pipelines, 10. bleeding points, 11. cold screen bodies, 12. cold screen top plates, 13. is cold
Shielding body suspension rod, 14. refrigeration machines insert pipe, 15. Heat Conduction Materials, 16. heaters, 17. temperature sensors, 18. pressure-reducing valves, and 19.
Conduction cooling band, 20. indium pads.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, superconducting cyclotron clack box of the present utility model includes liquid helium condenser 1, cold screen, outer vacuum
Room 2, liquid helium delivery pipe 3, wire 4 and some refrigeration machines 5, the liquid helium condenser 1 are located inside cold screen, and the cold screen is positioned at outer
Inside vacuum chamber 2；The liquid helium condenser 1 is closed container, and operating temperature is about 4.2K, and it is hung by some liquid helium condensers
Bar 6 is suspended in below exterior vacuum chamber's top plate, for storing condensing again for helium caused by liquid helium and evaporation, the liquid helium condensation
Fairlead 7 is additionally provided with device 1；Correspond on the cold screen body 11 at the fairlead 7 and be provided with opening 8；The exterior vacuum chamber 2
Above correspond at the fairlead 7 and be provided with external pipeline 9, bleeding point 10 is additionally provided with exterior vacuum chamber 2；The liquid helium delivery pipe 3
Exterior vacuum chamber's wall and liquid helium condenser wall are both passed through with wire 4, and is drawn via the fairlead 7 of liquid helium condenser 1；The liquid helium
Delivery pipe 3 is used to convey liquid helium at superconducting coil；Institute's wire 4 is used to power to superconducting coil；The operating temperature of the cold screen
About 70K, for increasing the thermograde between liquid helium condenser 1 and exterior vacuum chamber 2 to reduce exterior vacuum chamber 2 to liquid helium condenser
1 radiant heat, cold screen includes open-topped cold screen body 11 and cold screen top plate 12, if the cold screen body 11 is by dry and cold screen sheet
Body suspension rod 13 is suspended in below exterior vacuum chamber's top plate；Portion of the wire 4 between exterior vacuum chamber's wall and liquid helium condenser wall
Point, indium-aluminium nitride-indium sandwich, and the another side of sandwich and cold screen top plate 12 are also laid with its partial outer face
It is in contact；The exterior vacuum chamber 2 is as the outer container of clack box and the installation foundation of other parts, if exterior vacuum chamber's top plate is provided with
Drying cold inserts pipe 14, and the cold head of each refrigeration machine 5 is inserted pipe 14 by refrigeration machine and stretched into inside exterior vacuum chamber 2, each refrigeration machine 5
Cold head is connected by Heat Conduction Material 15 with liquid helium condenser 1；The cold screen top plate 12 and each refrigeration machine are inserted between pipe 14 admittedly
Fixed connection.
Heater 16 and temperature sensor are additionally provided with the outer wall of liquid helium condenser 1；Also set on the liquid helium condenser 1
There is pressure-reducing valve 18；The quantity of the liquid helium condenser suspension rod 6 and the quantity of cold screen body suspension rod 13 are both preferably 4, and uniformly
Arrangement；The material of the liquid helium condenser suspension rod 6 and cold screen body suspension rod 13 is glass fibre；The material of the liquid helium condenser 1
Matter is stainless steel；The material of the cold screen body 11 is metallic aluminium；The material of the cold screen top plate 12 is metallic copper；The cold screen
Connected between top plate 12 and cold screen body 11 using some conduction cooling bands 19, these conduction cooling bands 19 are the braiding of metal copper material
Thing；The aluminium foil of multilayer build-up is also wrapped on as heat-insulating material on the cold outer wall of screen body 11；The cold outer wall of screen body 11
On be additionally provided with temperature sensor；Indium pad 20 is additionally provided between the cold head and the Heat Conduction Material 15 of each refrigeration machine 5；It is described
The thickness of indium pad 20 is 0.5-0.6mm；The quantity of the refrigeration machine 5 is 4.
Above-mentioned clack box is applied in the development process of certain medical proton therapy accelerator.First, by the He of liquid helium delivery pipe 3
The output end of wire 4, the fairlead 7 on liquid helium condenser 1, the pipeline such as external pipeline 9 of exterior vacuum chamber 2 are relevant with accelerator
Part is connected.Next, the input of liquid helium delivery pipe 3 is connected with liquid helium feeding mechanism, input and the electricity of wire 4
Stream feeding mechanism is connected.Then, it is vacuumized by the bleeding point 10 of exterior vacuum chamber 2.After vacuum meets to require, i.e.,
Each cooling of refrigeration machine 5 can be passed through；By liquid helium delivery pipe 3 to supplying liquid helium at superconducting coil.Finally, from wire 4 to superconducting line
Circle power supply, realize the normal operation of accelerator.Practice have shown that valve box structure of the present utility model is reasonable in design, working condition is steady
It is fixed, it is easy to operate, liquid helium dosage can be significantly reduced.
Claims (9)
- A kind of 1. superconducting cyclotron clack box, it is characterised in that：The clack box includes liquid helium condenser, cold screen, exterior vacuum chamber, liquid Helium delivery pipe, wire and some refrigeration machines, the liquid helium condenser are located inside cold screen, and the cold screen is located in exterior vacuum chamber Portion；The liquid helium condenser is closed container, and it is suspended in below exterior vacuum chamber's top plate by some liquid helium condenser suspension rods, institute State and be additionally provided with fairlead on liquid helium condenser；Correspond on the cold screen body at the fairlead and be provided with opening；It is described outer true Correspond in empty room at the fairlead and be provided with external pipeline, bleeding point is additionally provided with exterior vacuum chamber；The liquid helium delivery pipe and Wire both passes through exterior vacuum chamber's wall and liquid helium condenser wall, and is drawn via the fairlead of liquid helium condenser；The cold screen includes Open-topped cold screen body and cold screen top plate, if the cold screen body is suspended in exterior vacuum chamber's top plate by dry and cold screen body suspension rod Lower section；Part of the wire between exterior vacuum chamber's wall and liquid helium condenser wall, it can also lay on its partial outer face There is indium-aluminium nitride-indium sandwich, and the another side of sandwich is in contact with cold screen top plate；On exterior vacuum chamber's top plate Pipe is inserted provided with some refrigeration machines, the cold head of each refrigeration machine is inserted pipe by refrigeration machine and stretched into inside exterior vacuum chamber, each refrigeration machine Cold head is connected by Heat Conduction Material with liquid helium condenser；The cold screen top plate is fixedly connected between inserting pipe with each refrigeration machine.
- 2. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：Also set in the liquid helium condenser outer walls Having heaters and temperature sensor.
- 3. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：It is additionally provided with and subtracts on the liquid helium condenser Pressure valve.
- 4. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：The quantity of the liquid helium condenser suspension rod Quantity with cold screen body suspension rod is 4, and uniformly arrangement.
- 5. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：The liquid helium condenser suspension rod and cold screen The material of body suspension rod is glass fibre.
- 6. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：The cold screen top plate and cold screen body it Between use some conduction cooling band connections.
- 7. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：Also coated on the cold screen body outer wall There is heat-insulating material.
- 8. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：It is additionally provided with the cold screen body outer wall Temperature sensor.
- 9. superconducting cyclotron clack box as claimed in claim 1, it is characterised in that：The cold head of each refrigeration machine with it is described Indium pad is additionally provided between Heat Conduction Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720905426.0U CN207099418U (en) | 2017-07-25 | 2017-07-25 | A kind of superconducting cyclotron clack box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720905426.0U CN207099418U (en) | 2017-07-25 | 2017-07-25 | A kind of superconducting cyclotron clack box |
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| Publication Number | Publication Date |
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| CN207099418U true CN207099418U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720905426.0U Active CN207099418U (en) | 2017-07-25 | 2017-07-25 | A kind of superconducting cyclotron clack box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121281A (en) * | 2018-11-03 | 2019-01-01 | 上海辰光医疗科技股份有限公司 | Docking structure for cyclotron superconducting magnet and after-condenser |
-
2017
- 2017-07-25 CN CN201720905426.0U patent/CN207099418U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121281A (en) * | 2018-11-03 | 2019-01-01 | 上海辰光医疗科技股份有限公司 | Docking structure for cyclotron superconducting magnet and after-condenser |
| CN109121281B (en) * | 2018-11-03 | 2023-09-22 | 上海辰光医疗科技股份有限公司 | Docking structure for cyclotron superconducting magnet and recondensor |
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