EP2039979A1 - Cryostat doté d'un récipient intérieur renforcé - Google Patents

Cryostat doté d'un récipient intérieur renforcé Download PDF

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Publication number
EP2039979A1
EP2039979A1 EP20070018698 EP07018698A EP2039979A1 EP 2039979 A1 EP2039979 A1 EP 2039979A1 EP 20070018698 EP20070018698 EP 20070018698 EP 07018698 A EP07018698 A EP 07018698A EP 2039979 A1 EP2039979 A1 EP 2039979A1
Authority
EP
European Patent Office
Prior art keywords
cryostat
reinforcing element
inner vessel
fiber
bottom part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20070018698
Other languages
German (de)
English (en)
Other versions
EP2039979B1 (fr
Inventor
Hannes Dr. Nowak
Sergio Nicola Dr. Erné
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BMDSys Production GmbH
Original Assignee
BMDSys GmbH
BMDSys Production GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BMDSys GmbH, BMDSys Production GmbH filed Critical BMDSys GmbH
Priority to DE200750006845 priority Critical patent/DE502007006845D1/de
Priority to EP20070018698 priority patent/EP2039979B1/fr
Priority to AT07018698T priority patent/ATE503960T1/de
Priority to US12/679,179 priority patent/US20110036102A1/en
Priority to CA 2725707 priority patent/CA2725707A1/fr
Priority to PCT/EP2008/008070 priority patent/WO2009040101A1/fr
Publication of EP2039979A1 publication Critical patent/EP2039979A1/fr
Application granted granted Critical
Publication of EP2039979B1 publication Critical patent/EP2039979B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • F17C3/085—Cryostats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/0665—Synthetics in form of fibers or filaments radially wound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F17C2203/0673—Polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0111—Boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F17C2221/017—Helium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/02—Applications for medical applications

Definitions

  • the invention relates to a cryostat, which is particularly suitable for use in a biomagnetic measuring system, as well as a biomagnetic measuring system comprising such a cryostat.
  • the invention further relates to a method for producing a cryostat, which is particularly suitable for biomagnetic measurements.
  • cryostats and measuring systems can be used in particular in the field of cardiology or in other medical fields, such as neurology. Other applications, such as non-medical applications, such as applications in materials research, are conceivable.
  • biomagnetic measurement systems The basis of biomagnetic measurement systems is the fact that most cell activities in the human or animal body are associated with electrical signals, in particular electrical currents.
  • the measurement of these electrical signals themselves, which are caused by the cell activity, is known for example from the field of electrocardiography.
  • the electrical currents are also connected to a corresponding magnetic field whose measurement is made use of the various known biomagnetic measurement methods.
  • the measurement of magnetic fields of biological samples or patients, or the measurement of temporal changes of these magnetic fields represents a metrological challenge.
  • the magnetic field changes in the human body which are to be measured in the magnetocardiography, about one million times weaker than the magnetic field of the earth.
  • the detection of these changes thus requires extremely sensitive magnetic sensors.
  • superconducting Quantum Interference Devices SQUIDs
  • Such sensors typically need to be cooled to 4 ° K (-269 ° C) to achieve the superconducting state, typically using liquid helium.
  • the SQUIDs are therefore usually arranged individually or in a SQUID array in a so-called. Dewar vessel and are cooled there accordingly.
  • laser-pumped magneto-optic sensors are currently being developed that can have approximately comparable sensitivity.
  • the sensors are usually arranged in an array arrangement in a container for temperature stabilization.
  • cryostat containers for temperature stabilization
  • these may be helium cryostats or other types of cryostat.
  • dewar Between the cryostat and the cryostat vessel, which is also referred to as dewar, is not distinguished below, even if the actual cryostat next to the cryostat vessel may include more parts.
  • the production of the cryostat for receiving biomagnetic sensor systems constructively presents a great challenge.
  • the sensors are usually in one predetermined arrangement in these cryostats introduced, for example in the form of a hexagonal arrangement of SQUIDs or other magnetic sensors.
  • the cryostat comprises an inner vessel, with sensors received therein, as well as an outer vessel.
  • the space between inner vessel and outer vessel is evacuated.
  • the distance between the sensors housed in the inner cryostat vessel and the skin surface of the patient is kept as small as possible, since, for example, the signal strength decreases with a high power of the distance between sensor and skin surface. Accordingly, the distance between the bottoms of the inner and outer vessels must be kept small and extremely constant.
  • cryostats are known from the prior art, which can be used for magnetic measurements.
  • WO 94/03754 a cryostat vessel with an inner Dewar and an outer Dewar.
  • a series of radiation shields is provided.
  • DE 298 09 387 U1 describes a cryostat for radiomagnetic probing methods in which SQUIDs are preferably used.
  • the cryostat has a high electromagnetic high-frequency transparency.
  • a double vessel is again proposed, wherein a sensor is received at the bottom of an inner vessel.
  • This inner vessel is formed in two parts and shows a bottom part with a raised edge which partially encloses a side wall.
  • the conventional cryostat used for magnetic measurements have a number of disadvantages and difficulties which can affect the reliability and reproducibility of the measurements.
  • deformations can lead to the formation of thermal bridges between the bottoms of the vessels.
  • tensions can easily occur, which can lead to cracks, which in turn can have a strong negative impact on the quality of the cryostat.
  • cryostat which is particularly suitable for use in biomagnetic measuring systems and which at least largely avoids the disadvantages of the cryostats known from the prior art.
  • the cryostat should be reliable and reproducible to produce and should avoid the quality problems described above.
  • a cryostat for use in a biomagnetic measuring system, which has at least one inner vessel and at least one outer vessel, and at least one arranged between the inner vessel and the outer vessel cavity.
  • a plurality of such inner and / or outer vessels and / or a plurality of cavities may be provided.
  • the cavity should be acted upon by a negative pressure, so it should be able to be sealed in order to be evacuated.
  • inner and outer vessels may, for example, have corresponding seals (for example, separate sealing rings and / or sealing adhesions at joints or similar types of seals), a pump port for connection to a device for generating a vacuum (e.g., a vacuum pump), or the like.
  • the outer vessel and the inner vessel can be made of a variety of possible materials, which ensure the required mechanical stability of these vessels. It is particularly preferred if these vessels are wholly or partly made of a fiber composite material, ie a composite of a fiber material and a matrix material made of a plastic. Alternatively or additionally, however, a variety of other materials can be used, such as metals, plastics, ceramics or a combination of these materials.
  • the inner vessel has a bottom part and a side wall connected in a circumferential connection region with the bottom part.
  • the inner vessel has a circumferential reinforcing element in this connection region.
  • This reinforcing element should have a first fiber composite material with an anisotropically oriented first fiber material having a local preferred direction.
  • This local preferred direction should be oriented substantially in the circumferential direction of the cryostat.
  • the fiber material comprises fibers which are arranged substantially tangentially at each location of the reinforcing element.
  • essentially is preferably to be understood an oriented orientation of the fibers, which is at least 10%, more preferably at least 20%.
  • the local preferred direction of the fibers of the fiber material should preferably deviate by less than 20 ° from the circumferential direction, preferably even less than 10 ° or less than 5 °.
  • a fiber fabric may comprise, for example, warp threads and weft threads.
  • the warp threads or the weft threads should be oriented substantially in the circumferential direction, whereas the respective other type of thread is oriented perpendicular thereto, for example parallel to an axis of the cryostat.
  • at least 40% or even at least half of the fibers are oriented substantially in the circumferential direction.
  • the fiber mats as a whole should also have a tangential orientation in their longitudinal extent. If an elongated band of a fiber mat is used, for example in the context of a winding technique, so should preferably extend the longer axis of this band in the circumferential direction.
  • the proposal of the reinforcing element is based on the fact that, after numerous experiments with fiber composite materials, it has been found that the random arrangement of the fibers in fiber composite materials in the connection region can cause considerable problems.
  • the fiber orientation is aligned substantially in a radial arrangement.
  • instabilities in the vessel wall can occur, in particular when pumping out of the cavity.
  • the proposed reinforcing element with the circumferentially oriented fibers of the fiber material acts like a "reinforcing belt" and is based on the same Basic ideas such as radial tires in automotive technology.
  • the individual fibers of the fiber material can be hooked into each other, so that the circumferential reinforcing element is additionally reinforced in its stability relative to radially outward loads.
  • the reinforcing element may be formed as a separate reinforcing element, for example as a belt-shaped, hoop-shaped or annular separate reinforcing element.
  • the reinforcing element is formed integrally with the side wall or, more preferably, in one piece with the bottom part.
  • the reinforcing element may be part of a raised edge of the bottom part, which is in contact with the side wall and, for example, glued thereto.
  • the bottom part outside the reinforcing member also has a second fiber composite material.
  • this second composite fiber material may be wholly or partially material-identical to the first composite fiber material, i. it may, for example, have identical matrix materials and / or identical types of fiber materials.
  • the second fiber composite material has a second fiber material, which may be oriented isotropically, for example, or in turn anisotropic with, for example, radial orientation.
  • the reinforcing element is designed in the form of a cylinder ring.
  • this cylinder ring can also have stages, such as a step on which the side wall is placed.
  • the bottom part can, as described above, have a raised edge, which is oriented substantially parallel to the side wall.
  • the reinforcing element may be an integral part of this raised edge, for example, an upper portion of this raised edge.
  • this raised edge in particular in the region of the reinforcing element, can furthermore have a step, with a deeper step surface pointing into the interior of the inner vessel.
  • the side wall can sit on this deeper step surface.
  • the side wall may be enclosed in the lower region of a raised ring or collar of gradation.
  • this raised ring of the step which comprises the side wall, includes the reinforcing element.
  • the side wall may in principle have any desired cross-section, wherein an axial symmetry about an axis of the cryostat is preferred.
  • round or polygonal cross sections are particularly preferred, so that the side wall can be produced, for example, as a hollow cylinder with a circular or polygonal cross section.
  • the first fiber material and / or optionally also the second fiber material may in particular comprise at least one of the following fiber materials: a glass fiber material, a carbon fiber material, a mineral fiber material. Combinations of these and / or other materials are possible.
  • the fiber material has a multiplicity of fibers interlocked with one another.
  • the fiber material comprises at least one fiber mat, which may include, for example, substantially parallel oriented fibers, with deviations of preferably not more than 10 ° -20 ° from the parallelism are still tolerable.
  • This fiber mat can then, for example, have an elongated shape, for example the shape of a long strip, in which case preferably the fibers are arranged parallel to the longitudinal extension of this strip.
  • the fiber mat should extend at least once around the circumference of the reinforcing element, and it is particularly preferred if this fiber mat reaches around this circumference several times. In this case, a winding technique can be used, resulting in a particularly stable reinforcing member.
  • the fiber composite material further comprises a matrix material.
  • This matrix material may comprise at least one or more of the following materials: a thermoplastic plastic material, a thermosetting plastic material, in particular an epoxy resin, an elastomeric material. It is particularly preferred if the matrix material comprises an initially deformable (ie, for example, flowable) matrix material which can subsequently be cured, for example by a thermal and / or photochemical and / or chemical curing or curing by simply waiting. Many such materials are known in the art and can be used. Examples of such resins are shown in more detail below.
  • the bottom part for receiving the biomagnetic sensors which may be, for example, SQUIDs and / or magneto-optical sensors, having a plurality of wells.
  • These depressions should be arranged in the interior of the inner vessel and point to the bottom side of the cryostat.
  • the pits may be arranged in a hexagonal array and e.g. 64 wells.
  • other numbers of wells and / or arrangements of wells are possible.
  • a biomagnetic measuring system which includes at least one cryostat according to one of the embodiments described above, and at least one biomagnetic sensor for detecting a magnetic field.
  • these sensors can, for example WO 03 / 073117A1 .
  • EP 0359 864 B1 or other publications from the field of biomagnetic sensors are referenced.
  • the method steps can be carried out in the specified sequence or else in a different order or overlapping in time.
  • the mold may, for example, comprise a conventional casting mold (also called a tool) for casting processes.
  • a conventional casting mold also called a tool
  • other forms are conceivable, depending on the production technique used.
  • an elongated fiber mat may be used having circumferentially oriented fibers which are disposed at least once, preferably multiple times, over the entire circumference of the region for forming the reinforcing element in the mold.
  • These cores may have the desired negative shape to the recesses and may be selected according to the desired depth of the recesses. In this way, even in large-scale use, cryostats can be produced for a large number of sensors, which nevertheless have the above-described positive quality properties.
  • FIG. 1 is a possible embodiment of a cryostat 110 according to the invention shown in a sectional view.
  • the cryostat 110 has an inner vessel 112 and an outer vessel 114 enclosing the inner vessel 112.
  • the outer vessel 114 is configured substantially cylindrical and has various flanges 116 and 118. While the lower of these flanges 116 substantially performs support functions, the upper flange 118 serves to receive a lid 120 of the outer vessel 114. Through this cover 120 projects a neck 122 of the inner vessel 112. Through this neck 122, biomagnetic sensors (shown in FIG. 1 not shown) into the interior of a (also substantially cylindrical) main vessel 124 of the inner vessel 112 are introduced. In addition, leads to these sensors can be led through the neck 122 to the outside and connected to a corresponding electronics, so that measurement signals of these sensors can be queried.
  • a cavity 126 is formed between the inner vessel 112 and the outer vessel 114.
  • This cavity 126 can by means of a in FIG. 1 Vacuum socket not shown are evacuated. By this evacuation and formation of a negative pressure in this cavity 126, an insulating effect of the cryostat 110 is increased. In this way, the interior of the main vessel 124 of the inner vessel 112 can be cooled, for example, by means of liquid helium, without requiring a replacement or replacement of this liquid helium at short intervals.
  • Both the inner vessel 112 and the outer vessel 114 have substantially continuous fiber composite materials as materials. Furthermore, both the inner vessel 112 and the outer vessel 114 are modular. Thus, for example, the outer vessel 114 next to the lid 120 has a side wall 128 and a bottom part 130.
  • the inner vessel 112 has, in addition to the neck 122 in the region of the main vessel 124, a circular ring 132, which seals the neck 122 relative to the main vessel 124.
  • the inner vessel 112 has a side wall 134 and a bottom part 136. In this embodiment, the side walls 128,134 are provided with a cylindrical shape, which is not absolutely necessary. Thus, for example, polygonal cross sections or irregular cross sections can be used.
  • FIG. 1 A particularly critical area in the production of the cryostat 110 is the in FIG. 1
  • FIG. 2 a connection area 140 is shown in detail. Both figures will be explained together below.
  • connection region 140 When evacuating the cavity 126 in FIG. 1 acts on the side wall 134 of the inner vessel 112 an outward, directed toward the cavity 126 force. This force leads in the peripheral connection region 140 between the bottom part 136 and the side wall 134 of the inner vessel 112 to tension.
  • the connection region 140 has a circumferential reinforcing element 142, which in this exemplary embodiment is formed integrally with the bottom part 136.
  • the bottom part 136 has a raised, annular edge 144, which is formed in its upper region as a step 146.
  • This step 146 has a lower step surface 148, on which the lower edge of the side wall 134 of the inner vessel 112 rests.
  • the step 146 includes a collar 150 which annularly surrounds the lower edge of the side wall 134.
  • the reinforcing element 142 differs from the rest of the bottom part 136 essentially by its structural properties.
  • the entire bottom part 136 is made of a fiber composite material, which preferably comprises an epoxy resin as a matrix material and, for example, glass fibers as a fiber material.
  • other additives may be included.
  • this fiber material which in the FIGS. 2 and 3 is not shown, oriented in the circumferential direction and thus has in FIG. 2 into the drawing plane.
  • the fiber orientation of the fiber material is substantially radially extending, ie in FIG. 2 parallel to the drawing plane. The orientation of the fiber materials will be described below with reference to Figures 4A-4C explained in more detail.
  • the bottom part 136 has a series of depressions 152. These recesses 152 are used to hold biomagnetic sensors, which are not shown in the figures.
  • SQUIDs can be used for this purpose, which are mounted, for example, on a linkage introduced through the neck 122 of the inner vessel 112 into the main vessel 124.
  • the biomagnetic sensors may, for example, be accommodated in a hexagonal arrangement in the base part 136 so that they can receive measurement signals over a surface area and thus for example map a chest area of a patient.
  • the depressions 152 serve, for example, for the purpose of fixing the biomagnetic sensors and, moreover, shortening the distance between the sensor and the skin surface of the patient in that the effective bottom thickness of the bottom part 136 is increased from the original D to the distance d in FIG. 2 is reduced. Furthermore, in the bottom part 136 threaded holes 154 to which, for example, a linkage for holding the biomagnetic sensors can be fixed.
  • FIGS. 1 to 3 are shown partial steps of a method for producing a cryostat, for example a cryostat according to the above FIGS. 1 to 3 .
  • a method for producing a cryostat for example a cryostat according to the above FIGS. 1 to 3
  • the partial steps of the method are shown, which lead to the production of the bottom part 136, and thereof in each case again only a section, which essentially corresponds to the cutout FIG. 2 corresponds and thus in particular the reinforcing element 142 comprises.
  • a fiber material 156 is arranged in a first mold half 160.
  • This first mold half 160 substantially corresponds to the later outer contour of the bottom part 136, for example according to FIG FIG. 2 ,
  • first region 162 in which the reinforcing element 142 is later formed
  • second region 164 which comprises the bottom part 136 outside the reinforcing element 164.
  • the fiber material 156, 158 is a mat-shaped fiber material, wherein identical fiber materials 156, 158 can be used for both regions 162, 164, for example.
  • the two regions 162, 164 essentially differ in the orientation of the fiber material 156, 158. While in the region 164 the fiber material is inserted into the first mold half 160 substantially in radial alignment, the fiber material 158 is formed in the region 162, in FIG which later the reinforcing element 142 is formed, oriented in the circumferential direction.
  • fiber mats with parallel, interlocked fibers can be pressed into this region 162 of the first mold half 160 such that these fiber mats circulate several times around the raised edge of this first mold half 160. This technique can be called a "winding technique".
  • the fiber mats 156 may also project at least partially into the region 162.
  • the fiber material 156, 158 is cast with a curable matrix material 166.
  • This matrix material 166 may be, for example, a curable epoxy resin.
  • an epoxy resin type L 20 for example, R & G Faserverbundtechnik GmbH, 71107 Waldenbuch, Germany
  • a hardener for example, the type EPH 161 (for example, also from R & G Faserverbundtechnik GmbH, 71107 Waldenbuch, Germany) used.
  • Fiber material 156, 158 for example, an E glass with a glass fabric having a density of 160 g / m 2 (for example, by R & G Faserverbundtechnik GmbH, 71107 Waldenbuch, Germany) can be used.
  • fiber materials 156, 158 and / or thermosetting matrix materials 166 are of course applicable.
  • a second mold half 168 is pressed onto the first mold half 160.
  • the matrix material 166 and the fiber material 156,158 is thereby compressed, wherein, for example, openings may be provided through which excess matrix material 166 can escape from the interior space between the two mold halves 160, 168. Due to the interaction of the two mold halves 160, 168, the interior area between these mold halves substantially includes the shape of the later bottom portion 136.
  • the matrix material 166 may now harden, which curing process may include, for example, a polymerization process, a drying process, or the like. The curing can be favored for example by thermal activation, by chemical activation, by photochemical activation or by the addition of starters.
  • the exact configuration of the curing process generally depends on the choice of matrix material 166.
  • the bottom part 136 forms, which can be configured, for example, as in FIG FIG. 2 comprising the reinforcing element 142 in the connection region 140.
  • the second mold half 168 has a plurality of interchangeable cores 170, which constitute a negative of these depressions 152.
  • a plurality of cores 170 may be provided to, for example, cryostats 110 having varying depths of the cavities 152 (ie, varying in size d in FIG FIG. 2 ) to produce.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Measuring Magnetic Variables (AREA)
EP20070018698 2007-09-24 2007-09-24 Cryostat doté d'un récipient intérieur renforcé Not-in-force EP2039979B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE200750006845 DE502007006845D1 (de) 2007-09-24 2007-09-24 Kryostat mit verstärktem Innengefäss
EP20070018698 EP2039979B1 (fr) 2007-09-24 2007-09-24 Cryostat doté d'un récipient intérieur renforcé
AT07018698T ATE503960T1 (de) 2007-09-24 2007-09-24 Kryostat mit verstärktem innengefäss
US12/679,179 US20110036102A1 (en) 2007-09-24 2008-09-24 Cryostat having a reinforced interior vessel
CA 2725707 CA2725707A1 (fr) 2007-09-24 2008-09-24 Cryostat possedant un recipient interieur renforce
PCT/EP2008/008070 WO2009040101A1 (fr) 2007-09-24 2008-09-24 Cryostat à cuve intérieure renforcée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070018698 EP2039979B1 (fr) 2007-09-24 2007-09-24 Cryostat doté d'un récipient intérieur renforcé

Publications (2)

Publication Number Publication Date
EP2039979A1 true EP2039979A1 (fr) 2009-03-25
EP2039979B1 EP2039979B1 (fr) 2011-03-30

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EP20070018698 Not-in-force EP2039979B1 (fr) 2007-09-24 2007-09-24 Cryostat doté d'un récipient intérieur renforcé

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WO2010079147A1 (fr) * 2009-01-06 2010-07-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Agencement de couches barrières pour systèmes de citernes

Families Citing this family (1)

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US10069270B2 (en) * 2016-02-11 2018-09-04 Raytheon Company Planar waveguides with enhanced support and/or cooling features for high-power laser systems

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JPS61201994A (ja) * 1985-03-01 1986-09-06 Sumitomo Electric Ind Ltd 繊維強化プラスチツクス製極低温冷媒容器
JPH04196181A (ja) * 1990-11-26 1992-07-15 Toshiba Corp 極低温容器
WO1994003754A1 (fr) * 1992-07-30 1994-02-17 Biomagnetic Technologies, Inc. Dewar cryogenique et son procede de fabrication
EP1004812A2 (fr) * 1998-11-27 2000-05-31 Sumitomo Electric Industries, Ltd. Réservoir pour liquide de refroidissement et son procédé de fabrication
DE19952611A1 (de) * 1999-11-02 2001-05-23 Eberhard Haack Hochdruckbehälter und Verfahren zu seiner Herstellung
EP1408274A2 (fr) * 2002-10-11 2004-04-14 Bayerische Motoren Werke Aktiengesellschaft Réservoir sous pression pour gaz liquéfiés, en particulier réservoir cryogénique pour un véhicule automobile

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JPS61201994A (ja) * 1985-03-01 1986-09-06 Sumitomo Electric Ind Ltd 繊維強化プラスチツクス製極低温冷媒容器
JPH04196181A (ja) * 1990-11-26 1992-07-15 Toshiba Corp 極低温容器
WO1994003754A1 (fr) * 1992-07-30 1994-02-17 Biomagnetic Technologies, Inc. Dewar cryogenique et son procede de fabrication
EP1004812A2 (fr) * 1998-11-27 2000-05-31 Sumitomo Electric Industries, Ltd. Réservoir pour liquide de refroidissement et son procédé de fabrication
DE19952611A1 (de) * 1999-11-02 2001-05-23 Eberhard Haack Hochdruckbehälter und Verfahren zu seiner Herstellung
EP1408274A2 (fr) * 2002-10-11 2004-04-14 Bayerische Motoren Werke Aktiengesellschaft Réservoir sous pression pour gaz liquéfiés, en particulier réservoir cryogénique pour un véhicule automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010079147A1 (fr) * 2009-01-06 2010-07-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Agencement de couches barrières pour systèmes de citernes
US8389087B2 (en) 2009-01-06 2013-03-05 Kaefer Schiffsausbau Gmbh Barrier layer arrangement for tank systems

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CA2725707A1 (fr) 2009-04-02
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EP2039979B1 (fr) 2011-03-30
ATE503960T1 (de) 2011-04-15
US20110036102A1 (en) 2011-02-17

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