CN107564658A - Thermal shield and its manufacture method, cryostat and set of molds - Google Patents
Thermal shield and its manufacture method, cryostat and set of molds Download PDFInfo
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- CN107564658A CN107564658A CN201710906373.9A CN201710906373A CN107564658A CN 107564658 A CN107564658 A CN 107564658A CN 201710906373 A CN201710906373 A CN 201710906373A CN 107564658 A CN107564658 A CN 107564658A
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- outer barrel
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Abstract
The present invention relates to a kind of thermal shield and its manufacture method, the cryostat with the thermal shield and set of molds for making the thermal shield.The thermal shield includes inner cylinder, outer barrel, end socket and connecting portion；The outer barrel is set in outside the inner cylinder；The end socket is arranged between the inner cylinder and the outer barrel, and the end socket is located at the end of the inner cylinder, it is the first edge that the end socket, which connects the inner cylinder and the outer barrel, the side being in contact between the end socket and the inner cylinder, and the side that the end socket is in contact with the outer barrel is the second edge；The connecting portion is arranged at first edge and/or second edge；The relatively described end socket of the connecting portion is inclined；The quantity of the connecting portion is multiple, and multiple connecting portions are along the circumferentially distributed of the end socket；There is gap between the adjacent connecting portion.Above-mentioned thermal shield, be not only simple to manufacture, cost it is low, also with less edge stress.
Description
Technical field
The present invention relates to superconducting magnet technical field, more particularly to a kind of thermal shield and its manufacture method, has and is somebody's turn to do
The cryostat of thermal shield and the set of molds for making the thermal shield.
Background technology
In superconducting magnet structure, the superconducting coil being wound in bobbin winder bracket wire casing is sleeved on the holding of hollow circle tube low temperature
In the inner pressurd vessel of device.Filling cryogenic media (such as liquid helium) in inner pressurd vessel body, cryogenic media submergence superconducting coil, protects superconducting coil
Low-temperature superconducting state is held, stable high-intensity magnetic field is produced after coil magnetization.
In order to completely cut off outside heat radiation, internal low temperature environment is kept, cryostat is generally by multilayer concentric cylinder chamber
Body assembles, and is followed successively by inner pressurd vessel, thermal shield and outer vacuum tank from inside to outside.Wherein, thermal shield can reflect outer
The heat radiation in portion, while the heat for providing one or more levels is blocked, and is effectively isolated external environment condition and is internally leaked heat.
Thermal shield includes cylindrical inner cylinder, the cylindrical outer barrel that concentric locking collar is mounted in outside inner cylinder and is arranged on inner/outer tube
Between and respectively with inner/outer tube fix annular seal head.Usually, in order to do not increase the total length of cryostat, it is necessary to as far as possible
The relative spacing between thermal shield and inner pressurd vessel and outer container is kept, so as to need the annular seal head of thermal shield with approximation
Seamlessly transit so that cylinder is connected smoother with end socket corner.
For the end socket generally use " spinning " or " punching press " technique of band " seamlessly transitting " structure.Want spinning or the big chi of punching press
For very little end socket, it is necessary to make corresponding mould and frock, these frocks are expensive, process-cycle length.Simultaneously as sheet metal
Punching press is usually constructed with resilience, and springback control is relatively difficult, and a punch designs tend not to meet to require, it is necessary to repeatedly repair a die.
So that the manufacture of thermal shield is relatively difficult.
The content of the invention
Based on this, it is necessary to the problem of for how to be easy to thermal shield to manufacture, there is provided a kind of thermal shield and its manufacture
Method, the cryostat with the thermal shield and the set of molds for making the thermal shield.
A kind of thermal shield, including：
Inner cylinder；
Outer barrel, the outer barrel are set in outside the inner cylinder；
End socket, the end socket are arranged between the inner cylinder and the outer barrel, and the end socket is located at the end of the inner cylinder
Portion, it is the first edge that the end socket, which connects the inner cylinder and the outer barrel, the side being in contact between the end socket and the inner cylinder,
The side that the end socket is in contact with the outer barrel is the second edge；And
Connecting portion, the connecting portion are arranged at first edge and/or second edge, and the connecting portion connects institute
State inner cylinder and the end socket and/or the outer barrel and the end socket；The relatively described end socket of the connecting portion is inclined；It is described
The quantity of connecting portion is multiple, and multiple connecting portions are along the circumferentially distributed of the end socket；Between the adjacent connecting portion
With gap.
Above-mentioned thermal shield, outer barrel are set in outside inner cylinder with one heart, and end socket is arranged between inner cylinder and outer barrel, in end socket connection
Cylinder and outer barrel, end socket are located at the end of inner cylinder, and the side being in contact between end socket and inner cylinder is the first edge, and end socket connects with outer barrel
Tactile side is the second edge, and the first edge and/or the second edge are provided with connecting portion, and connecting portion is inclined with respect to end socket,
To be multiple, multiple connecting portions connections are circumferentially distributed the quantity of connecting portion, have gap between adjacent connecting portion, by
Gap is opened up between adjacent connecting portion so that the power required for bending of connecting portion etc. is reduced, consequently facilitating the peace of connecting portion
Dress, and then it is easy to the manufacture of thermal shield, and the direction where connecting portion towards end socket tilts so that inner cylinder or outer barrel connect with end socket
It is smoother to meet place, improves edge stress.
In one of the embodiments, the connecting portion extends out from the outward flange of the close outer barrel of the end socket
And formed, and the direction bending where the connecting portion toward the outer barrel, so as to which the edge of the connecting portion and the outer barrel connects
Connect.
In one of the embodiments, the connecting portion extends out and formed from the edge of the outer barrel, the connection
Direction bending where portion toward the inner cylinder, so as to which the outward flange of the connecting portion and the close outer barrel of the end socket connects
Connect.
In one of the embodiments, the edge of the connecting portion and the outer barrel is detachably connected, the connecting portion with
The outward flange of the close outer barrel of the end socket is detachably connected.
In one of the embodiments, the gap it is vertical with the radial direction of the inner cylinder and with the central shaft of the inner cylinder
Breadth Maximum on the vertical direction in the direction of line is more than or equal to 1 millimeter and less than or equal to 20 millimeter.
In one of the embodiments, in addition to glue-line, the glue-line are used to cover the gap.
A kind of cryostat, the cryostat are used for superconducting magnet structure, and the cryostat includes content
Device, outer vacuum tank and above-mentioned thermal shield, the thermal shield are set in outside the inner pressurd vessel with one heart, and the outer vacuum is held
Device is set in outside the thermal shield with one heart.
Above-mentioned cryostat, easily manufactured, cost is relatively low.
A kind of set of molds for above-mentioned thermal shield, the set of molds include the first mould and the second mould, and described
One mould has the first inclined plane, and second mould has the second inclined plane being adapted with first inclined plane, described
First mould and second mould are used to form the connecting portion.
Above-mentioned set of molds, simple in construction and cost are low.
A kind of manufacture method of thermal shield, including step：
Multiple gaps are offered on end socket, the gap extends to the outward flange of the end socket, the adjacent gap
Between limit connecting portion, from the outward flange of the end socket toward the edge direction of outer barrel on, the radial direction of the gap and the end socket
Width on the vertical and direction vertical with the direction of the central axis of the end socket gradually increases；
By the effect of pressure, the direction where the connecting portion toward the outer barrel is bent；
The edge of the remote connecting portion of the connecting portion is connected with the edge of the outer barrel.
A kind of manufacture method of thermal shield, including step：
Offer multiple gaps on outer barrel, the gap extends to the edge of the outer barrel, the adjacent gap it
Between limit connecting portion, from the edge of the outer barrel toward end socket direction on, the gap it is vertical with the radial direction of the outer barrel and with institute
The width stated on the vertical direction in direction of the central axis of outer barrel gradually increases；
By the effect of pressure, the direction where the connecting portion toward the end socket is bent；
The edge of the remote connecting portion of the connecting portion is connected with the outward flange of the end socket.
The manufacture method of above-mentioned thermal shield, not only manufacturing process is simple, moreover it is possible to reduces manufacturing cost.
Brief description of the drawings
Fig. 1 is the structural representation of the thermal shield of an embodiment；
Fig. 2 is the partial enlarged drawing of A shown in Fig. 1；
Fig. 3 is sectional view of the thermal shield on central cross-section shown in Fig. 1；
Fig. 4 is that the connecting portion shown in Fig. 3 extends out the structural representation to be formed from end socket；
Fig. 5 is the sectional view of another embodiment of the thermal shield on central cross-section shown in Fig. 1；
Fig. 6 is the connecting portion and end socket and the structural representation being detachably connected of outer barrel shown in Fig. 1
Fig. 7 is the partial enlarged drawing of B shown in Fig. 4；
Fig. 8 is that the set of molds of an embodiment is used for the structural representation of thermal shield.
Embodiment
As described in background, under normal circumstances to band " seamlessly transitting " structure end socket generally use " spinning " or
" punching press " technique, manufacturing process are more complicated.
After further research, in one of the embodiments, there is provided a kind of thermal shield, including inner cylinder, outer barrel, envelope
Head and connecting portion, outer barrel are set in outside the inner cylinder with one heart.End socket is arranged between inner cylinder and outer barrel, and end socket is located at inner cylinder
End, end socket connection inner cylinder and outer barrel, the side being in contact between end socket and inner cylinder be the first edge, end socket is in contact with outer barrel
Side be the second edge.First edge and/or the second edge are provided with connecting portion, and the direction where connecting portion towards end socket tilts.
The quantity of connecting portion is multiple, and multiple connecting portions are circumferentially distributed, and have gap between adjacent connecting portion.
Further, a kind of cryostat is additionally provided, the cryostat is used for superconducting magnet structure, and low temperature is kept
Device includes inner pressurd vessel, outer vacuum tank and thermal shield, thermal shield and is set in one heart outside inner pressurd vessel, and outer vacuum tank is concentric
It is set in outside the thermal shield.
Further, a kind of set of molds, including the first mould and the second mould are also provided based on above-mentioned thermal shield, the
One mould has the first inclined plane, and the second mould has the second inclined plane being adapted with the first inclined plane, the first mould and the
Two molds are used to form connecting portion.
Further, the manufacture method for providing thermal shield.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
As shown in figure 1, the thermal shield 100 of an embodiment includes inner cylinder 110, outer barrel 120, end socket 130 and connecting portion
140.The thermal shield 100 is used in cryostat.Outer barrel 120 is set in outside inner cylinder 110.End socket 130 is arranged on inner cylinder 110
Between outer barrel 120, and end socket 130 connects inner cylinder 110 and outer barrel 120.End socket 130 is located at the end of inner cylinder 110, it is,
Two ends of inner cylinder 110 are equipped with end socket 130.Wherein, in order to obtain good heat transfer and heat shielding performance, thermal shield
Material is aluminium alloy used by 100.It should be noted that material can also have for other used by thermal shield 100
The material of conduction of heat.In addition, in one embodiment, outer barrel 120 is set in outside inner cylinder 110 with one heart.
The side being in contact between end socket 130 and inner cylinder 110 is the first edge, and the side that end socket 130 is in contact with outer barrel 120 is
Second edge.Connecting portion 140 is inclined with respect to end socket 130 in the first edge and/or the second edge, connecting portion 140.Connection
To be multiple, multiple connecting portions 140 have along the circumferentially distributed of end socket 130 quantity in portion 140 between adjacent connecting portion 140
Gap.It should be noted that multiple connecting portions 140 can be uniformly distributed along the circumference of end socket 130.
Referring again to Fig. 1 and Fig. 2, exemplified by the second edge is provided with connecting portion 140, connecting portion 140 connects the side of outer barrel 120
The outward flange of the close outer barrel 120 of edge and end socket 130.Direction where connecting portion 140 towards end socket 130 tilts, the phase of connecting portion 140
It is inclined to end socket 130.The quantity of connecting portion 140 is multiple, and connecting portion 140, which connects, to be circumferentially distributed, adjacent company
There is gap 141 between socket part 140.
In one embodiment, as shown in figure 1, end socket 130 includes median plane 131, outer barrel 120 includes cylinder 121.End socket
130 median plane 131 and the cylinder 121 of outer barrel 120 be substantially vertical on central cross-section or near normal, wherein, center is cut
Face is the section by the central axis of inner cylinder 110.So that on central cross-section, the median plane of end socket 130 and the post of outer barrel 120
Face forms on-right angle transition structure, as shown in Figure 3.Wherein, the on-right angle transition structure can be fillet, chamfering or other laces
Structure.In one of the embodiments, the angle α between on-right angle transition structure and median plane can be 2-90 degree.Wherein, in
Heart face 131 be by end socket 130 center and with the face of the central axis upright of inner cylinder 110.
On-right angle transition structure can be fillet, chamfering or other lace structures, so that inner cylinder 110 or outer barrel 120
Smoother with the junction of end socket 130, formation seamlessly transits, should so as to reduce the edge between inner cylinder or outer barrel and end socket
Power, so be thinned end socket, interior barrel and an external barrel thickness and reduce cost.In addition, when the thermal shield 100 is used for cryostat
When middle, thermal shield 100 coordinates with inner pressurd vessel and outer container, and the relative gap between laminated vessel can be kept smaller, so that compared with
The length of small cryostat, and then improve magnetic resonance equipment and put under house arrest effect.
In one of the embodiments, connecting portion 140 it is vertical with the radial direction of inner cylinder 110 and with the central shaft of inner cylinder 110
Surface on the vertical direction in the direction of line is plane or cambered surface.So that the company of end socket 130 and inner cylinder 110 or outer barrel 120
The place of connecing forms on-right angle transition structure.In addition, as shown in Fig. 2 connecting portion 140 is in and and inner cylinder vertical with the radial direction of inner cylinder 110
Width d on the vertical direction in the direction of 110 central axis can be 20 millimeters~300 millimeters, so as to which end socket 130 is in circumference
On preferably be able to can be engaged with inner cylinder 110 or outer barrel 120.
Referring again to Fig. 3, in one of the embodiments, connecting portion 140 is from the outward flange of the close outer barrel 120 of end socket 130
Extend out and formed, and the direction bending where connecting portion 140 toward outer barrel 120 is so as to connecting portion and the edge with outer barrel 120
Connection.On central cross-section, on-right angle transition structure is formed between the median plane of end socket 130 and the cylinder of outer barrel 120.Such as Fig. 4
Shown, end socket 130 can be integrally formed with connecting portion 140, have gap 141 between adjacent connecting portion 140.Wherein, connect
Portion 140 can be connected by welding or riveting method with the edge of outer barrel 120.When connecting portion 140 is from the close outer barrel of end socket 130
When 120 outward flange extends out and formed, due to having gap between adjacent connecting portion 140, consequently facilitating to connecting portion
140 are carried out toward outside sweep so that connecting portion 140 is connected with the edge of outer barrel 120, and then causes the manufacture of thermal shield 100 more
Add simple, moreover it is possible to reduce cost.
Fig. 5 is refer to, in one of the embodiments, connecting portion 240 extends out and formed from the edge of outer barrel 220,
Connecting portion 240 is toward the direction bending where inner cylinder, so as to which the outward flange of connecting portion 240 and the close outer barrel 220 of end socket 230 connects
Connect.On central cross-section, on-right angle transition structure is formed between the median plane of end socket 230 and the cylinder of outer barrel 220.Wherein, even
Socket part 240 can be connected by welding or riveting method with the outward flange of end socket 230.When connecting portion 240 is from the edge of outer barrel 220
When extending out and being formed, due to having gap between adjacent connecting portion 240, consequently facilitating connecting portion 240 is bent,
So that connecting portion 240 is connected with the outward flange of end socket 230, and then make it that the manufacture of thermal shield is simpler, moreover it is possible to reduce into
This.
In one of the embodiments, as shown in fig. 6, the edge of connecting portion 340 and outer barrel 320 is detachably connected, connection
Portion 340 and the outward flange of the close outer barrel 320 of end socket 330 are detachably connected.Wherein, connecting portion 34- can pass through welding or riveting
The outward flange that mode is connect with end socket 230 is connected, the side that connecting portion 340 can also be by way of welding or riveting with outer barrel 320
Edge connects.It is connected it should be noted that connecting portion 340 can lead to other removablies such as clamping with the outward flange of end socket 230,
Connecting portion 340 can also be connected by other detachable connections such as clamping with the edge of outer barrel 320.When connecting portion 340 with
When the outward flange of the edge of outer barrel 320 and the close outer barrel 320 of end socket 330 is detachably connected, due to connected connecting portion it
Between there is gap, consequently facilitating welding etc. progress, to technological requirement reduce, and then cause thermal shield manufacture it is simpler
It is single, moreover it is possible to reduce cost.
In one of the embodiments, bending and molding is carried out to connecting portion in order to easily facilitate, from the edge of end socket inside
In the edge direction of cylinder or outer barrel, before bending and molding is carried out, gap is in central shaft vertical with the radial direction of inner cylinder and with inner cylinder
Width on the vertical direction in the direction of line gradually increases.Exemplified by being provided with connecting portion on the second edge, and the connecting portion from
Exemplified by the edge of the close outer barrel of end socket extends out and formed, as shown in fig. 7, from the edge of end socket 130 toward the edge of outer barrel
Direction on, width of the gap 141 on the vertical direction in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Gradually increase.Wherein, the shape in gap 141 can be V-type.So that when carrying out bending to connecting portion 140, adjacent connecting portion
Phenomena such as overlapping is not likely to produce between 140, ensures that each connecting portion 140 there are enough spaces to carry out bending.Need what is illustrated
It is that after connecting portion carries out bending, gap is vertical in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Width on direction can be equal.In addition, connecting portion carry out bending before, gap it is vertical with the radial direction of inner cylinder and with
Width on the vertical direction in the direction of the central axis of inner cylinder can also be equal.
In one of the embodiments, gap 141 is in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Breadth Maximum on vertical direction is more than or equal to 1 millimeter and less than or equal to 20 millimeter.
It should be noted that detachably connect for the outward flange of the close outer barrel at the edge and end socket of connecting portion and outer barrel
Situation about connecing, when width of the gap on the vertical direction in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder by
When cumulative big, can by the way that first one end of connecting portion and the edge of end socket are connected, then by the other end of connecting portion and inner cylinder or
The edge connection of outer barrel, because gap is on the vertical direction in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Width gradually increase, consequently facilitating the other end of connecting portion weld etc. being connected with the edge of inner cylinder or outer barrel.
In order to ensure the sealing of thermal shield, in one of the embodiments, thermal shield also includes glue-line, the glue-line
For covering gap.It should be noted that gap can also be filled by welding.Wherein, glue-line can be adhesive tape.
Although thermal shield is typically not subject to pressure, in order to not increase the overall length of the cryostat containing thermal shield
Degree is, it is necessary to keep the relative spacing between the inner pressurd vessel and outer container of thermal shield and cryostat, so as to need heat as far as possible
The end socket of screen layer is with seamlessly transitting.On the other hand, in order to obtain good heat transfer and heat shielding performance, thermal shield
The usual material used, it is necessary to using large-scale pressing equipment, and the diel of complex designing and adds for aluminum alloy materials
Work technique.Above-mentioned end socket, the first edge and/or the second edge are provided with connecting portion, and the direction where connecting portion towards end socket tilts,
So that the end socket of thermal shield with seamlessly transitting, reduces edge stress, and then the thickness of thinned end socket and cylinder is simultaneously
Reduce cost.In addition, there is gap between adjacent connecting portion so that the power required for bending of connecting portion etc. is reduced, so as to
It is easy to the formation of connecting portion, and then is easy to the manufacture of thermal shield, also reduces cost and reduce manufacturing time.
It should be noted that when only the first edge is provided with connecting portion, the structure of all parts in thermal shield, portion
Annexation between part etc. only has the thermal shield that the second edge is provided with connecting portion as described above, will not be repeated here.
When the first edge and the second edge are provided with connecting portion, the structure of all parts in thermal shield, part
Between annexation etc. only have the thermal shield that the second edge is provided with connecting portion as described above, also repeat no more herein.
The cryostat of one embodiment includes inner pressurd vessel, outer vacuum tank and above-mentioned thermal shield.Thermal shield is same
The heart is set in outside inner pressurd vessel, and outer vacuum tank is set in outside thermal shield with one heart.The cryostat is used for superconducting magnet structure.
The side being in contact between end socket and inner cylinder is the first edge, and the side that end socket is in contact with outer barrel is the second edge.
First edge and/or the second edge are provided with connecting portion.Direction where connecting portion towards end socket tilts, so that
The end socket of thermal shield reduces edge stress with seamlessly transitting, and then the thickness of end socket and cylinder is thinned and reduces cost.
And when the thermal shield and inner pressurd vessel and the cooperation of outer vacuum tank, the relative gap between laminated vessel can be kept smaller, so as to
The length of smaller cryostat, and then improve magnetic resonance equipment and put under house arrest effect.
In addition, there is gap between adjacent connecting portion so that the power required for bending of connecting portion etc. is reduced, so as to just
In the formation of connecting portion, and then be easy to the manufacture of thermal shield so that cryostat is easily manufactured and manufacturing cost compared with
It is low.
As shown in figure 8, the set of molds for being used to make above-mentioned thermal shield of an embodiment includes the first mould 210 and second
Mould 220.First mould 210 has the first inclined plane 211, and the second mould 220 has the be adapted with the first inclined plane 211
Two inclined planes 221, the first mould 210 and the second mould 220 are used to form connecting portion.
Specifically, referring again to Fig. 8, when connecting portion extends out from the edge of end socket and formed, or when connecting portion is from inner cylinder
Edge or the edge of outer barrel when extending out and being formed, due to having gap between adjacent connecting portion, so that connection
It is not connected with each other or influences between portion.So as to which the first mould 210 and the second mould 220 to be placed on to the connection for needing bending
The both sides in portion, less pressure matched moulds is applied to the first mould 210 and the second mould 220, you can complete to single connecting portion
Bending.So that the moulding process of connecting portion is simple, and material rebounds are smaller in forming process, and the deformation of material is easily controlled
System, required pressure are greatly reduced.
In one of the embodiments, mould is vertical in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Direction on width hung down equal to or less than connecting portion in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
Width on straight direction.
In one of the embodiments, on from the edge of end socket toward the edge direction of inner cylinder or outer barrel, gap with inner cylinder
Radial direction is vertical and the direction vertical with the direction of the central axis of inner cylinder on width gradually increase.To be set on the second edge
Exemplified by having connecting portion, and exemplified by the connecting portion extends out and formed from the edge of the close outer barrel of end socket, from the edge of end socket
Toward on the direction at the edge of outer barrel, gap is in the vertical direction in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder
On width gradually increase.Wherein, the shape in gap can be V-type.So that when carrying out bending to connecting portion, adjacent connection
Phenomena such as overlapping is not likely to produce between portion, ensures that each connecting portion there are enough spaces to carry out bending.An implementation wherein
In example, Breadth Maximum of the gap on the vertical direction in the direction of central axis vertical with the radial direction of inner cylinder and with inner cylinder is more than
Equal to 1 millimeter and less than or equal to 20 millimeters.
The manufacture method of the thermal shield of one embodiment, comprises the following steps：
S1：Multiple gaps are offered on end socket.
Specifically, gap extends to the outward flange of end socket, and connecting portion is limited between adjacent gap, from the outward flange of end socket
Toward in the edge direction of outer barrel, on the direction that gap is vertical with the radial direction of end socket and the direction of central axis with end socket is vertical
Width gradually increases.Using this gap, it is easy to subsequently carry out bending to connecting portion.
S2：By the effect of pressure, the direction where connecting portion toward outer barrel is bent.
Specifically, application pressure can be carried out to connecting portion by above-mentioned set of molds, so that connecting portion is toward outer barrel institute
Direction bending.Due to the width on gap is vertical with the radial direction of inner cylinder and the direction of central axis with inner cylinder is vertical direction
Degree gradually increase, so as to which when carrying out bending to connecting portion, phenomena such as overlapping is not likely to produce between adjacent connecting portion, ensure every
Individual connecting portion has enough spaces to carry out bending.In one of the embodiments, gap it is vertical with the radial direction of inner cylinder and with
Breadth Maximum on the vertical direction in the direction of the central axis of inner cylinder is more than or equal to 1 millimeter and less than or equal to 20 millimeter.
S3：The edge of the edge of the remote connecting portion of connecting portion and outer barrel is connected.
Specifically, the edge of remote connecting portion of connecting portion and the edge of outer barrel are connected by welding.Need
It is bright, also the edge of remote connecting portion of connecting portion and the edge of outer barrel are connected using other modes such as rivet weldings.
The manufacture method of the thermal shield of another embodiment, comprises the following steps：
S10：Multiple gaps are offered on outer barrel.
Specifically, gap extends to the edge of outer barrel, and connecting portion is limited between adjacent gap, from the past envelope in the edge of outer barrel
On head direction, the width on direction that gap is vertical with the radial direction of outer barrel and the direction of central axis with outer barrel is vertical gradually increases
Greatly.Using this gap, it is easy to subsequently carry out bending to connecting portion.
S20：By the effect of pressure, the direction where institute's connecting portion toward end socket is bent.
Specifically, application pressure can be carried out to connecting portion by above-mentioned set of molds, so that connecting portion is toward end socket institute
Direction bending.Due to the width on gap is vertical with the radial direction of inner cylinder and the direction of central axis with inner cylinder is vertical direction
Degree gradually increase, so as to which when carrying out bending to connecting portion, phenomena such as overlapping is not likely to produce between adjacent connecting portion, ensure every
Individual connecting portion has enough spaces to carry out bending.In one of the embodiments, gap it is vertical with the radial direction of inner cylinder and with
Breadth Maximum on the vertical direction in the direction of the central axis of inner cylinder is more than or equal to 1 millimeter and less than or equal to 20 millimeter.
S30：The outward flange of the edge of the remote connecting portion of connecting portion and end socket is connected.
Specifically, the edge of remote connecting portion of connecting portion and the outward flange of end socket are connected by welding.Need
Illustrate, also connected the edge of remote connecting portion of connecting portion and the outward flange of end socket using other modes such as rivet weldings
Come.
It should be noted that the modes such as laser cutting, casting can also be used to process connecting portion, then two by connecting portion
Edge of the end respectively with the edge of outer barrel and the close outer barrel of end socket connects.Wherein it is possible to using welding or riveting etc.
Mode connects edge of the both ends of connecting portion respectively with the edge of outer barrel and the close outer barrel of end socket.
In addition, when being provided with connecting portion on the first edge that the side that inner cylinder and end socket are in contact is limited, the heat shielding
The manufacture method of layer is similar with the manufacture method of above-mentioned thermal shield, will not be repeated here.
When the first edge and the second edge are provided with connecting portion, between being opened up on two edges of end socket
Gap, then connecting portion is pressed so that connecting portion is connected with the edge of inner cylinder and the edge of outer barrel respectively.Can also including
Gap, then the connecting portion income bending that will be limited between adjacent segment are opened up respectively on the edge of cylinder and the edge of outer barrel, finally
Connected with the edge of end socket.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. thermal shield, it is characterised in that including：Inner cylinder；Outer barrel, the outer barrel are set in outside the inner cylinder；End socket, the end socket are arranged between the inner cylinder and the outer barrel, and the end socket is located at the end of the inner cylinder, institute State end socket and connect the inner cylinder and the outer barrel, the side that the end socket and the inner cylinder are in contact is the first edge, the end socket The side being in contact with the outer barrel is the second edge；AndConnecting portion, the connecting portion are arranged at first edge and/or second edge, and the connecting portion connection is described interior Cylinder and the end socket and/or the outer barrel and the end socket；The relatively described end socket of the connecting portion is inclined；The connection The quantity in portion is multiple, and multiple connecting portions are along the circumferentially distributed of the end socket；Have between the adjacent connecting portion Gap.
- 2. thermal shield according to claim 1, it is characterised in that the connecting portion is from the close described outer of the end socket The outward flange of cylinder extends out and formed, and the direction bending where the connecting portion toward the outer barrel, so as to the connecting portion It is connected with the edge of the outer barrel.
- 3. thermal shield according to claim 1, it is characterised in that the connecting portion extends from the edge of the outer barrel Come and formed, the direction bending where the connecting portion toward the inner cylinder, so as to the close institute of the connecting portion and the end socket State the outward flange connection of outer barrel.
- 4. thermal shield according to claim 1, it is characterised in that the edge of the connecting portion and the outer barrel is detachable Connection, the outward flange of the connecting portion and the close outer barrel of the end socket is detachably connected.
- 5. thermal shield according to claim 1, it is characterised in that the gap vertical with the radial direction of the inner cylinder and Breadth Maximum on the direction vertical with the direction of the central axis of the inner cylinder is more than or equal to 1 millimeter and less than or equal to 20 milli Rice.
- 6. thermal shield according to claim 5, it is characterised in that also described for covering including glue-line, the glue-line Gap.
- 7. a kind of cryostat, the cryostat is used for superconducting magnet structure, it is characterised in that the cryostat It is concentric including inner pressurd vessel, outer vacuum tank and the thermal shield as any one of claim 1-6, the thermal shield It is set in outside the inner pressurd vessel, the outer vacuum tank is set in outside the thermal shield with one heart.
- 8. a kind of set of molds for being used to make the thermal shield as any one of claim 1-6, it is characterised in that described Set of molds includes the first mould and the second mould, and first mould has the first inclined plane, and second mould has and institute The second inclined plane that the first inclined plane is adapted is stated, first mould and second mould are used to form the connecting portion.
- 9. a kind of manufacture method of thermal shield, it is characterised in that including step：Offer multiple gaps on end socket, the gap extends to the outward flange of the end socket, between the adjacent gap Limit connecting portion, from the outward flange of the end socket toward the edge direction of outer barrel on, the gap it is vertical with the radial direction of end socket and with Width on the vertical direction in the direction of the central axis of the end socket gradually increases；By the effect of pressure, the direction where the connecting portion toward the outer barrel is bent；The edge of the remote connecting portion of the connecting portion is connected with the edge of the outer barrel.
- 10. a kind of manufacture method of thermal shield, it is characterised in that including step：Multiple gaps are offered on outer barrel, the gap extends to the edge of the outer barrel, limited between the adjacent gap Determine connecting portion, from the edge of the outer barrel toward end socket direction on, the gap it is vertical with the radial direction of the outer barrel and with it is described outer Width on the vertical direction in direction of the central axis of cylinder gradually increases；By the effect of pressure, the direction where the connecting portion toward the end socket is bent；The edge of the remote connecting portion of the connecting portion is connected with the outward flange of the end socket.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906373.9A CN107564658B (en) | 2017-09-29 | 2017-09-29 | Heat shield layer, method for manufacturing the same, cryostat, and mold set |
| US16/024,765 US11187381B2 (en) | 2017-09-29 | 2018-06-30 | Cryostat devices for magnetic resonance imaging and methods for making |
| US17/456,654 US20220082209A1 (en) | 2017-09-29 | 2021-11-29 | Cryostat devices for magnetic resonance imaging and methods for making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710906373.9A CN107564658B (en) | 2017-09-29 | 2017-09-29 | Heat shield layer, method for manufacturing the same, cryostat, and mold set |
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| Publication Number | Publication Date |
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| CN107564658A true CN107564658A (en) | 2018-01-09 |
| CN107564658B CN107564658B (en) | 2020-03-20 |
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| CN201710906373.9A Active CN107564658B (en) | 2017-09-29 | 2017-09-29 | Heat shield layer, method for manufacturing the same, cryostat, and mold set |
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| CN109239429A (en) * | 2018-09-28 | 2019-01-18 | 上海联影医疗科技有限公司 | Shielding construction, vacuum tank and its magnetic resonance imaging system of superconducting magnet |
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| CN107564658B (en) | 2020-03-20 |
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Address after: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 Shanghai City, north of the city of Jiading District Road No. 2258 Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
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