CN106132066B - A kind of sealing structure of the cryostat of superconducting cyclotron - Google Patents
A kind of sealing structure of the cryostat of superconducting cyclotron Download PDFInfo
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- CN106132066B CN106132066B CN201610617112.0A CN201610617112A CN106132066B CN 106132066 B CN106132066 B CN 106132066B CN 201610617112 A CN201610617112 A CN 201610617112A CN 106132066 B CN106132066 B CN 106132066B
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- outer barrel
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H13/00—Magnetic resonance accelerators; Cyclotrons
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
Abstract
The invention belongs to superconducting cyclotron technical fields, more particularly to a kind of sealing structure of the cryostat of superconducting cyclotron, cryostat is the ring packing storehouse collectively formed by inner cylinder, outer barrel, upper flange, lower flange for placing superconducting coil, further includes and is arranged on upper flange, support tube under support tube, suspension in the suspension on lower flange；Electrostatic deflection plates extraction electrode support tube, line extraction system support tube, radial direction Beams detection target support tube, the suspension cross-brace cylinder being arranged on outer barrel；Sealing structure includes：Sealing unit between upper flange, lower flange and inner cylinder, outer barrel.The sealing structure can dismount maintenance, and sealing effect is stablized, and can ensure that superconducting coil is adjusted positioning in vacuum environment.
Description
Technical field
The invention belongs to superconducting cyclotron technical fields, and in particular to a kind of cryogenic thermostat of superconducting cyclotron
The sealing structure of device.
Background technology
Cyclotron is charged particle to be made to make circumnutation jointly using magnetic field and electric field, during exercise through high-frequency electric field
The device accelerated repeatedly is the important instrument in high-energy physics, and wherein superconducting cyclotron is that current medical proton therapeutic adds
The core equipment of fast device.Medical proton therapy accelerator can be realized to be treated with proton, the Heavy ion beam in microcosmos and be swollen
Knurl, is the most advanced radiation therapy technology in the world today, and only indivedual developed countries grasp and apply the technology.The country has been opened up
Open but temporarily have not been completed the development work of superconducting cyclotron.
The magnetic field of superconducting cyclotron is mainly provided by superconducting coil, and superconducting coil is placed on inside cryostat.
Superconducting coil is operated at a temperature of 4K, and to reduce, to work in the cryostat at a temperature of room temperature 300K right to the heat of superconducting coil
It flows, is needed inside cryostat in vacuum environment.So it needs to realize cryogenic thermostat using a kind of vacuum sealing mode
Vacuum sealing inside device.Present existing vacuum sealing mode is sealed using argon arc welding welding, can not be dismounted, and maintenance is not
Just, and the positioning accuracy request of suspension can not be met, so existing vacuum sealing mode can not be used.
Invention content
For the blank of superconducting cyclotron cryostat vacuum sealing means, need to design a kind of vacuum sealing side
Formula so that the vacuum sealing of cryostat disclosure satisfy that the skills such as detachable, easy access, the positioning accuracy for meeting suspension
Art requirement.
To achieve the above objectives, the technical solution adopted by the present invention is a kind of cryostat of superconducting cyclotron
Sealing structure, the cryostat include the loop configuration being made of inner cylinder, the outer barrel of annular, further include and be arranged on institute
Upper flange, the lower flange on the upper and lower end face of loop configuration are stated, the inner cylinder, outer barrel, upper flange, lower flange collectively form
For placing the ring packing storehouse of superconducting coil, further include and be arranged on the upper flange, support in the suspension on lower flange
Support tube under cylinder, suspension；It is arranged on electrostatic deflection plates extraction electrode support tube on the outer barrel, line extraction system
Support tube, radial direction Beams detection target support tube, suspension cross-brace cylinder, wherein, the sealing structure includes：The upper method
Sealing unit between blue, lower flange and the inner cylinder, outer barrel.
Further, it further includes horizontal to being arranged in the suspension support tube under support tube, suspension, suspension
Into support tube, electrostatic deflection plates extraction electrode support tube, line extraction system support tube, radial direction Beams detection target support tube
The sealing unit that equipment is sealed.
Further, the upper surface of the inner cylinder is close equipped with the second vacuum equipped with the first vacuum-sealing groove, lower face
Sealing groove, the upper surface of the outer barrel is equipped with third vacuum-sealing groove, lower face is equipped with the 4th vacuum-sealing groove, it is described on
Flange is arranged on by bolt on the upper surface of the inner cylinder, outer barrel, true with first vacuum-sealing groove, third respectively
Empty seal groove forms the ring seal space of closing, and the roughness of the inner surface in the ring seal space is described less than 1.6 μm
Vaccum seal ring is equipped in first vacuum-sealing groove, third vacuum-sealing groove, the vaccum seal ring can be sealed with the annular
The inner surface for closing space forms sealing, and the sealing can ensure that the vacuum degree in the cryostat is less than 1X10-4Pa。
Further, the lower flange is arranged on by bolt on the lower face of the inner cylinder, outer barrel, respectively with it is described
Second vacuum-sealing groove, the 4th vacuum-sealing groove form the ring seal space of closing, the inner surface in the ring seal space
Roughness be less than 1.6 μm, vaccum seal ring, the vacuum are equipped in second vacuum-sealing groove, the 4th vacuum-sealing groove
Sealing ring can be formed with the inner surface in the ring seal space and be sealed, and the sealing can ensure in the cryostat
Vacuum degree be less than 1X10-4Pa。
Further, one end sealing welding of the electrostatic deflection plates extraction electrode support tube is used on the outer barrel
Extraction electrode is installed, the end face of the open at one end of the electrostatic deflection plates extraction electrode support tube is equipped with the 5th vacuum sealing
Slot, the 5th vacuum-sealing groove is interior to be equipped with vaccum seal ring, there is and the electrostatic deflection sealed set on the extraction electrode
Corresponding first mounting flange of open at one end of plate extraction electrode support tube, first mounting flange is by bolt by described in
Extraction electrode is arranged in the electrostatic deflection plates extraction electrode support tube, and first mounting flange and the 5th vacuum are close
Sealing groove forms the ring seal space of closing, and the roughness of the inner surface in the ring seal space is less than 1.6 μm, the described 5th
The vaccum seal ring in vacuum-sealing groove can be formed with the inner surface in the ring seal space to be sealed, the sealing energy
Enough ensure that the vacuum degree in the cryostat is less than 1X10-4Pa。
Further, one end sealing welding of the line extraction system support tube is on the outer barrel, for installing beam
Flow extraction system, the end face of the open at one end of the line extraction system support tube is equipped with the 6th vacuum-sealing groove, and described the
Vaccum seal ring is equipped in six vacuum-sealing grooves, there is and the line extraction system branch sealed set in the line extraction system
Corresponding second mounting flange of open at one end of cylinder is supportted, second mounting flange is by bolt by the line extraction system
It is arranged in the line extraction system support tube, second mounting flange forms closing with the 6th vacuum-sealing groove
Ring seal space, the roughness of the inner surface in the ring seal space is less than 1.6 μm, in the 6th vacuum-sealing groove
The vaccum seal ring can be formed with the inner surface in the ring seal space and be sealed, and the sealing can ensure the low temperature
Vacuum degree in thermostat is less than 1X10-4Pa。
Further, one end sealing welding of the radial direction Beams detection target support tube is on the outer barrel, for installing
Radial direction Beams detection target, the end face of the open at one end of the radial direction Beams detection target support tube are equipped with the 7th vacuum-sealing groove,
Vaccum seal ring is equipped in 7th vacuum-sealing groove, there is and the radial direction beam sealed set on the radial direction Beams detection target
The corresponding third mounting flange of open at one end of stream detection target support tube, the third mounting flange is by bolt by the diameter
It is arranged in the radial direction Beams detection target support tube to Beams detection target, the third mounting flange and the 7th vacuum are close
Sealing groove forms the ring seal space of closing, and the roughness of the inner surface in the ring seal space is less than 1.6 μm, the described 7th
The vaccum seal ring in vacuum-sealing groove can be formed with the inner surface in the ring seal space to be sealed, the sealing energy
Enough ensure that the vacuum degree in the cryostat is less than 1X10-4Pa。
Further, in the suspension support tube one end sealing welding on the upper flange, under the suspension
Support tube one end sealing welding is on the lower flange, suspension cross-brace cylinder one end sealing welding is in the outer barrel
External side；Support tube under support tube, suspension in the suspension is provided with to hang in suspension cross-brace cylinder
Hang the suspension of the superconducting coil.
Further,
It is equipped with installation gear in the suspension under support tube, suspension in support tube, suspension cross-brace cylinder
Plate, on the installation baffle and the suspension under support tube, suspension between support tube, suspension cross-brace cylinder
The first weld seam of annular is formed by sealing welding；
Perforation is equipped among the installation baffle, the suspension passes through the perforation to be arranged in the suspension
Support tube under support tube, suspension in suspension cross-brace cylinder, is equipped with true between the suspension and the perforation
Empty seal bellows, the third that the vacuum sealing bellows top forms annular with the suspension by sealing welding are welded
Seam；
Gasket is equipped between the bottom end of the vacuum sealing bellows and the perforation, between the gasket and the perforation
The second weld seam of annular is formed by sealing welding, passes through sealing between the gasket and the bottom end of the vacuum sealing bellows
Welding forms the 4th weld seam of annular；
The sealing that first weld seam, the second weld seam, third weld seam, the 4th weld seam are formed can ensure that the low temperature is permanent
Vacuum degree in warm device is less than 1X10-4Pa。
Further, first weld seam, the second weld seam, third weld seam, the 4th weld seam are welded using argon arc welding vacuum sealing
It connects.
The beneficial effects of the present invention are：
1. forming all parts of sealing structure can dismount, inspection operation is facilitated.
2. sealing effect is stablized.
3. suspension can be adjusted in vacuum environment, the positioning accuracy request of superconducting coil disclosure satisfy that.
Description of the drawings
Fig. 1 is the schematic diagram of superconducting cyclotron cryostat structure described in the specific embodiment of the invention；
Fig. 2 is the sealing unit schematic diagram of upper flange described in the specific embodiment of the invention and the inner cylinder；
Fig. 3 is the sealing unit schematic diagram of lower flange described in the specific embodiment of the invention and the inner cylinder；
Fig. 4 is the sealing unit schematic diagram of upper flange described in the specific embodiment of the invention and the outer barrel；
Fig. 5 is the sealing unit schematic diagram of lower flange described in the specific embodiment of the invention and the outer barrel；
Fig. 6 is the sealing unit of support tube and the suspension in suspension described in the specific embodiment of the invention
Schematic diagram；
In figure：Support tube in 1- suspension, 2- upper flanges, 3- inner cylinders, 4- outer barreies, 5- lower flanges, 6- suspensions system
The lower support tube of system, 7- electrostatic deflection plates extraction electrode support tubes, 8- line extraction system support tubes, 9- radial direction Beams detection target branch
Cylinder is supportted, 10- bolts, the first vacuum-sealing grooves of 11-, the second vacuum-sealing grooves of 12-, 13- third vacuum-sealing grooves, 14- the 4th is very
Empty seal groove, 15- vaccum seal rings, 16- suspension, the first weld seams of 17-, the second weld seams of 18-, 19- third weld seams, 20-
Four weld seams, 21- installation baffles, 22- perforation, 23- gaskets, 24- vacuum sealing bellowss, 25- suspension cross-brace cylinders.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, cryostat includes the hollow loop configuration being made of inner cylinder 3, the outer barrel 4 of annular,
Further include the upper flange 2 being arranged on the upper and lower end face of loop configuration, lower flange 5.Inner cylinder 3, outer barrel 4, upper flange 2, laxative remedy
Orchid 5 collectively forms a ring packing storehouse, for placing the superconducting coil of superconducting cyclotron.In addition, on cryostat
It further includes and is arranged on upper flange 2, support tube 6 under support tube 1, suspension in the suspension on lower flange 5；It is arranged on outer barrel
It is electrostatic deflection plates extraction electrode support tube 7, line extraction system support tube 8, radial direction Beams detection target support tube 9 on body 4, outstanding
Extension system cross-brace cylinder 25,.A kind of sealing structure of the cryostat of superconducting cyclotron provided by the invention includes：
Sealing unit between upper flange 2, lower flange 5 and inner cylinder 3, outer barrel 4；
To being arranged in suspension support tube 6 under support tube 1, suspension, suspension cross-brace cylinder 25, electrostatic
Deflecting plates extraction electrode support tube 7, line extraction system support tube 8, the equipment in radial direction Beams detection target support tube 9 carry out close
The sealing unit of envelope.
The upper surface of inner cylinder 3 is equipped with the first vacuum-sealing groove 11, lower face is equipped with the second vacuum-sealing groove 12, outside
The upper surface of cylinder 4 is equipped with third vacuum-sealing groove 13, lower face is equipped with the 4th vacuum-sealing groove 14.
Third vacuum-sealing groove 13 of the upper flange 2 respectively with the first vacuum-sealing groove 11 of inner cylinder 3, outer barrel 4 is formed
The ring seal space (see Fig. 2, Fig. 4) of closing, the roughness of the inner surface in ring seal space are less than 1.6 μm, the first vacuum
Vaccum seal ring 15 is equipped in seal groove 11, third vacuum-sealing groove 13, vaccum seal ring 15 can be with ring seal space
Inner surface forms sealing, and sealing can ensure that the vacuum degree in cryostat is less than 1X10-4Pa。
Fourth vacuum-sealing groove 14 of the lower flange 5 respectively with the second vacuum-sealing groove 12 of inner cylinder 3, outer barrel 4 is formed
The ring seal space (see Fig. 3, Fig. 5) of closing, the roughness of the inner surface in ring seal space are less than 1.6 μm, the second vacuum
Vaccum seal ring 15 is equipped in seal groove 12, the 4th vacuum-sealing groove 14, vaccum seal ring 15 can be with ring seal space
Inner surface forms sealing, and sealing can ensure that the vacuum degree in cryostat is less than 1X10-4Pa。
Upper flange 2, lower flange 5 are arranged on inner cylinder 3, on outer barrel 4 by bolt 10, in the present embodiment, use 36
The circumferentially uniformly distributed interior hexagonal M10 bolt presses of root, ensure vaccum seal ring 15 at least with the first vacuum-sealing groove 11, third vacuum
The parallel 2 faces contact in the left and right in ring seal space (cross section is enclosing square) that seal groove 13 and upper flange 2 surround,
Ensure the annular that vaccum seal ring 15 is at least surrounded with the second vacuum-sealing groove 12, the 4th vacuum-sealing groove 14 and lower flange 5
2 faces that the left and right of enclosure space (cross section is enclosing square) is parallel contact, and are using pumping equipment to cryogenic thermostat
Device carries out the vacuum sealing of guarantee herein during vacuum acquirement.
Electrostatic deflection plates extraction electrode support tube 7 is used to install extraction electrode, as shown in Figure 1, in the present embodiment, outer barrel
Body 4 is equipped with 3 electrostatic deflection plates extraction electrode support tubes 7.One end sealing welding of electrostatic deflection plates extraction electrode support tube 7
On outer barrel 4, set on the end face of the open at one end (one end far from outer barrel 4) of electrostatic deflection plates extraction electrode support tube 7
Have the 5th vacuum-sealing groove, vaccum seal ring be equipped in the 5th vacuum-sealing groove, be furnished on extraction electrode (not marked in figure) with
(the first mounting flange is with drawing electricity for corresponding first mounting flange of open at one end of electrostatic deflection plates extraction electrode support tube 7
It is tightly connected between pole), extraction electrode is arranged on electrostatic deflection plates extraction electrode support tube 7 by the first mounting flange by bolt
Interior, the first mounting flange and the 5th vacuum-sealing groove form the ring seal space closed, the inner surface in ring seal space
Less than 1.6 μm, the vaccum seal ring in the 5th vacuum-sealing groove can form close roughness with the inner surface in ring seal space
Envelope, sealing can ensure that the vacuum degree in cryostat is less than 1X10-4Pa.(on electrostatic deflection plates extraction electrode support tube 7
The structure of sealing unit is consistent with the structure of inner cylinder 3, the sealing unit of outer barrel 4 with upper flange 2, lower flange 5)
As shown in Figure 1, one end sealing welding of line extraction system support tube 8 is drawn on outer barrel 4 for installing line
Go out system (not marked in figure), set on the end face of the open at one end (one end far from outer barrel 4) of line extraction system support tube 8
There is the 6th vacuum-sealing groove, vaccum seal ring is equipped in the 6th vacuum-sealing groove, is furnished in line extraction system and is drawn with line
Corresponding second mounting flange of open at one end of system support tube 8 (seals between the second mounting flange and line extraction system
Connection), line extraction system is arranged in line extraction system support tube 8 by the second mounting flange by bolt, the second installation
Flange and the 6th vacuum-sealing groove form the ring seal space of closing, and the roughness of the inner surface in ring seal space is less than
1.6 μm, the vaccum seal ring in the 6th vacuum-sealing groove can be formed with the inner surface in ring seal space to be sealed, and sealing can
Ensure that the vacuum degree in cryostat is less than 1X10-4Pa.(structure of the sealing unit on line extraction system support tube 8 is same
Upper flange 2, lower flange 5 are consistent with the structure of inner cylinder 3, the sealing unit of outer barrel 4)
As shown in Figure 1, one end sealing welding of radial direction Beams detection target support tube 9 is on outer barrel 4, for installing radially
Beams detection target (does not mark) in figure, the end of the open at one end (one end far from outer barrel 4) of radial direction Beams detection target support tube 9
Face is equipped with the 7th vacuum-sealing groove, and vaccum seal ring is equipped in the 7th vacuum-sealing groove, be furnished on radial direction Beams detection target with
The corresponding third mounting flange of open at one end of radial direction Beams detection target support tube 9 (with radial direction line visit by third mounting flange
It is tightly connected between survey target), radial direction Beams detection target is arranged on radial direction Beams detection target branch by third mounting flange by bolt
It supports in cylinder 9, third mounting flange and the 7th vacuum-sealing groove form the ring seal space closed, the interior table in ring seal space
For the roughness in face less than 1.6 μm, the vaccum seal ring in the 7th vacuum-sealing groove can be with the inner surface shape in ring seal space
Into sealing, sealing can ensure that the vacuum degree in cryostat is less than 1X10-4Pa.(on radial direction Beams detection target support tube 9
The structure of sealing unit is consistent with the structure of inner cylinder 3, the sealing unit of outer barrel 4 with upper flange 2, lower flange 5)
As shown in Figure 1, one end sealing welding of support tube 1 is on upper flange 2 in suspension, support tube under suspension
6 one end sealing welding is on lower flange 5, one end sealing welding of suspension cross-brace cylinder 25 (outer barrel on outer barrel 4
The outside of body 4).In the present embodiment, support tube 6, suspension cross-brace under support tube 1, suspension in suspension
Cylinder 25 respectively has 4, is arranged in a one-to-one correspondence.Support tube 6, suspension cross-brace under support tube 1, suspension in suspension
The suspension 16 that 25 inside of cylinder is set is used to hang the superconducting coil inside cryostat, and can pass through suspension 16
Positioning is adjusted accordingly to the position of superconducting coil.
Support tube 1 in suspension (as shown in fig. 6, support tube 6 under suspension, in suspension cross-brace cylinder 25
Sealing unit structure it is consistent with Fig. 6, only the direction of the internal suspension 16 installed is different), support under suspension
Installation baffle 21 is equipped in cylinder 6, suspension cross-brace cylinder 25, installation baffle 21 is with support tube 1, suspension in suspension
Lower the first weld seam 17 for forming annular between support tube 6, suspension cross-brace cylinder 25 by sealing welding of system；
Install and perforation 22 be equipped among baffle 21, suspension 16 pass through perforation 22 be arranged on support tube 1 in suspension,
Support tube 6 under suspension in suspension cross-brace cylinder 25, is equipped with vacuum sealing wave between suspension 16 and perforation 22
Line pipe 24,24 top of vacuum sealing bellows form the third weld seam 19 of annular with suspension 16 by sealing welding；
Gasket 23 is equipped between the bottom end of vacuum sealing bellows 24 and perforation 22, by close between gasket 23 and perforation 22
Soldering and sealing connects the second weld seam 18 to form annular, is formed between gasket 23 and the bottom end of vacuum sealing bellows 24 by sealing welding
4th weld seam 20 of annular；
First weld seam 17, the second weld seam 18, third weld seam 19, the 4th weld seam 20 are using the welding of argon arc welding vacuum sealing, institute
The sealing of composition can ensure that the vacuum degree in cryostat is less than 1X10-4Pa.Vacuum sealing bellows 24 and aforementioned four
The circular weld of sealing welding enables suspension 16 to be adjusted in vacuum environment, and suspension system is arranged on so as to meet
Pinpoint needs of the superconducting coil in vacuum environment on system 16.
In the present embodiment, at the required vacuum sealing of cryostat at totally 21, including upper flange 2 and inner cylinder 3
Vacuum sealing (at 1), the vacuum sealing (at 1) of upper flange 2 and outer barrel 4, the vacuum sealing (1 of lower flange 5 and inner cylinder 3
Place), the vacuum sealing (at 1) of lower flange 5 and outer barrel 4, suspension support tube is (including support tube 1,4 in 4 suspension
6,4 suspension cross-brace cylinders 25 of support tube under root suspension) with the vacuum sealing of suspension 16 (totally 12 at), also
Vacuum sealing (totally 3 at) including electrostatic deflection plates extraction electrode support tube 7 and extraction electrode, radial direction Beams detection target support tube
9 with the vacuum sealing (at 1) of radial direction Beams detection target, line extraction system support tube 8 and the vacuum sealing of line extraction system
(at 1).At 21 under vacuum sealing collective effect, energy during vacuum acquirement is carried out to cryostat using pumping equipment at this
Enough ensure that cryostat vacuum degree is better than 1X10-4Pa, while suspension 16 can be in the vacuum environment of cryostat
The position of superconducting coil is adjusted.
Device of the present invention is not limited to the embodiment described in specific embodiment, those skilled in the art according to
Technical scheme of the present invention obtains other embodiments, also belongs to the technological innovation scope of the present invention.
Claims (9)
1. a kind of sealing structure of the cryostat of superconducting cyclotron, the cryostat is included by the inner cylinder of annular
Body (3), outer barrel (4) form loop configuration, further include the upper flange (2) being arranged on the upper and lower end face of the loop configuration,
Lower flange (5), the inner cylinder (3), outer barrel (4), upper flange (2), lower flange (5) collectively form to place superconducting coil
Ring packing storehouse, further include and be arranged on the upper flange (2), support tube (1), suspension in the suspension on lower flange (5)
Support tube (6) under system；Electrostatic deflection plates extraction electrode support tube (7), the line being arranged on the outer barrel (4) draw system
System support tube (8), radial direction Beams detection target support tube (9), suspension cross-brace cylinder (25), it is characterized in that, the sealing
Structure includes：Sealing unit between the upper flange (2), lower flange (5) and the inner cylinder (3), outer barrel (4)；
The upper flange (2) is arranged on by bolt (10) on the upper surface of the inner cylinder (3), outer barrel (4)；
The lower flange (5) is arranged on by bolt (10) on the lower face of the inner cylinder (3), outer barrel (4)；
Support tube (1) one end sealing welding is on the upper flange (2), support tube under the suspension in the suspension
(6) one end sealing welding on the lower flange (5), described suspension cross-brace cylinder (25) one end sealing welding is described
On the outside of outer barrel (4)；Support tube (6), suspension cross-brace cylinder under support tube (1), suspension in the suspension
(25) suspension (16) for hanging the superconducting coil is provided in.
2. sealing structure as described in claim 1, it is characterized in that：It further includes to being arranged on support tube in the suspension
(1), support tube (6), suspension cross-brace cylinder (25), electrostatic deflection plates extraction electrode support tube (7), beam under suspension
The sealing unit that equipment in stream extraction system support tube (8), radial direction Beams detection target support tube (9) is sealed.
3. sealing structure as described in claim 1, it is characterized in that：The upper surface of the inner cylinder (3) is equipped with the first vacuum
Seal groove (11), lower face are equipped with the second vacuum-sealing groove (12), and the upper surface of the outer barrel (4) is equipped with third vacuum
Seal groove (13), lower face be equipped with the 4th vacuum-sealing groove (14), the upper flange (2) respectively with first vacuum sealing
Slot (11), third vacuum-sealing groove (13) form closing ring seal space, the inner surface in the ring seal space it is thick
Rugosity is less than 1.6 μm, and vaccum seal ring (15) is equipped in first vacuum-sealing groove (11), third vacuum-sealing groove (13),
The vaccum seal ring (15) can form with the inner surface in the ring seal space and seal, and the sealing can ensure described
Vacuum degree in cryostat is less than 1X10-4Pa。
4. sealing structure as claimed in claim 3, it is characterized in that：The lower flange (5) respectively with second vacuum sealing
Slot (12), the 4th vacuum-sealing groove (14) form closing ring seal space, the inner surface in the ring seal space it is thick
Rugosity is less than 1.6 μm, and vaccum seal ring (15) is equipped in second vacuum-sealing groove (12), the 4th vacuum-sealing groove (14),
The vaccum seal ring (15) can form with the inner surface in the ring seal space and seal, and the sealing can ensure described
Vacuum degree in cryostat is less than 1X10-4Pa。
5. sealing structure as claimed in claim 2, it is characterized in that：The one of the electrostatic deflection plates extraction electrode support tube (7)
Sealing welding is held on the outer barrel (4), for installing extraction electrode, the electrostatic deflection plates extraction electrode support tube (7)
The end face of open at one end be equipped with the 5th vacuum-sealing groove, vaccum seal ring is equipped in the 5th vacuum-sealing groove, it is described
Sealed set has the first peace corresponding with the open at one end of the electrostatic deflection plates extraction electrode support tube (7) on extraction electrode
Flange is filled, the extraction electrode is arranged on the electrostatic deflection plates extraction electrode by bolt and supported by first mounting flange
In cylinder (7), first mounting flange forms the ring seal space of closing, the annular envelope with the 5th vacuum-sealing groove
The roughness of the inner surface in space is closed less than 1.6 μm, the vaccum seal ring in the 5th vacuum-sealing groove can be with institute
The inner surface for stating ring seal space forms sealing, and the sealing can ensure that the vacuum degree in the cryostat is less than
1X10-4Pa。
6. sealing structure as claimed in claim 2, it is characterized in that：One end sealing of the line extraction system support tube (8)
It is welded on the outer barrel (4), for installing line extraction system, the opening one of the line extraction system support tube (8)
The end face at end is equipped with the 6th vacuum-sealing groove, and vaccum seal ring is equipped in the 6th vacuum-sealing groove, and the line is drawn
Sealed set has corresponding second mounting flange of open at one end with the line extraction system support tube (8), institute in system
It states the second mounting flange the line extraction system is arranged in the line extraction system support tube (8) by bolt, institute
State the ring seal space that the second mounting flange and the 6th vacuum-sealing groove form closing, the ring seal space it is interior
For the roughness on surface less than 1.6 μm, the vaccum seal ring in the 6th vacuum-sealing groove can be with the ring seal
The inner surface in space forms sealing, and the sealing can ensure that the vacuum degree in the cryostat is less than 1X10-4Pa。
7. sealing structure as claimed in claim 2, it is characterized in that：One end of the radial direction Beams detection target support tube (9) is close
Soldering and sealing is connected on the outer barrel (4), for installing radial direction Beams detection target, the radial direction Beams detection target support tube (9)
The end face of open at one end is equipped with the 7th vacuum-sealing groove, and vaccum seal ring, the diameter are equipped in the 7th vacuum-sealing groove
Sealed set has third corresponding with the open at one end of the radial direction Beams detection target support tube (9) to pacify on Beams detection target
Flange is filled, the radial direction Beams detection target is arranged on the radial direction Beams detection target branch by the third mounting flange by bolt
It supports in cylinder (9), the third mounting flange forms the ring seal space of closing, the annular with the 7th vacuum-sealing groove
The roughness of the inner surface of enclosure space is less than 1.6 μm, and the vaccum seal ring in the 7th vacuum-sealing groove can be with
The inner surface in the ring seal space forms sealing, and the sealing can ensure that the vacuum degree in the cryostat is less than
1X10-4Pa。
8. sealing structure as claimed in claim 2, it is characterized in that：
It is equipped in support tube (6), suspension cross-brace cylinder (25) under support tube (1), suspension in the suspension
Baffle (21) is installed, it is the installation baffle (21) and support tube (6) under support tube (1), suspension in the suspension, outstanding
The first weld seam (17) of annular is formed between extension system cross-brace cylinder (25) by sealing welding；
Perforation (22) is equipped among the installation baffle (21), the suspension (16) is arranged on institute across the perforation (22)
It states in support tube (6) under support tube in suspension (1), suspension, suspension cross-brace cylinder (25), the suspension system
It unites (16) and is equipped with vacuum sealing bellows (24), vacuum sealing bellows (24) top and institute between the perforation (22)
State the third weld seam (19) that suspension (16) forms annular by sealing welding；
The bottom end of the vacuum sealing bellows (24) and it is described perforation (22) between be equipped with gasket (23), the gasket (23) with
The second weld seam (18) of annular, the gasket (23) and the vacuum sealing are formed between the perforation (22) by sealing welding
The 4th weld seam (20) of annular is formed between the bottom end of bellows (24) by sealing welding；
The sealing that first weld seam (17), the second weld seam (18), third weld seam (19), the 4th weld seam (20) are formed can be protected
The vacuum degree demonstrate,proved in the cryostat is less than 1X10-4Pa。
9. sealing structure as claimed in claim 8, it is characterized in that：First weld seam (17), the second weld seam (18), third weldering
Stitch (19), the 4th weld seam (20) is welded using argon arc welding vacuum sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107946159B (en) * | 2017-11-24 | 2019-07-23 | 新奥科技发展有限公司 | A kind of adjustable ion source and electrostatic confinement fusion reactor |
| CN108811296B (en) * | 2018-07-04 | 2019-12-24 | 中国原子能科学研究院 | Beam debugging device and method for high-current cyclotron |
| CN110434416B (en) * | 2018-07-04 | 2020-07-28 | 中国原子能科学研究院 | Method for welding different material welding parts of vacuum chamber of superconducting cyclotron |
| CN110719685A (en) * | 2019-11-04 | 2020-01-21 | 中国原子能科学研究院 | Fixing mechanism for cryostat of superconducting cyclotron |
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