• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device for irradiating a sample in the core or at the periphery of a core of a nuclear reactor comprising: a chamber (6) with a double wall delimiting a chamber (7); a container (4) contained in said chamber (7); ), said container being kept at a distance from an inner wall (8) of the enclosure, said container (4) being intended to contain a coolant, - a sample holder (2), a free end of which is intended to be located in the container, the interior of the container being in fluid communication with the outside of the container and a volume between the inner wall (8) of the enclosure (6) and the container (4) being intended to be filled with a gas or mixture of gases, said heat-carrying gas.
    公开号:FR3016726A1
    申请号:FR1450519
    申请日:2014-01-22
    公开日:2015-07-24
    发明作者:Damien Moulin；Sebastien Christin
    申请人:Commissariat a lEnergie Atomique CEA；Commissariat a lEnergie Atomique et aux Energies Alternatives CEA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a device for the irradiation of materials in the core or at the periphery of the core of a device. BACKGROUND OF THE INVENTION a nuclear reactor, more particularly in a nuclear research reactor. In order to be able to make experiments on materials or samples to observe their irradiation behavior, it is necessary to be able to place them in a core or at the periphery of the core of a nuclear research reactor. It is therefore desired to have a device for introducing one (or more) sample (s) to be irradiated in the experimental reactor zone where the neutron flux is the highest, corresponding to the middle of the fuel assemblies of the reactor. In this zone, samples and structures under irradiation are subjected to nuclear radiation (gamma and neutrons) from the reactor core, which causes them to heat up. This experimental device sees high temperatures and high pressure.
    [0002] However, it is difficult to choose materials capable of both maintaining a high pressure and a high temperature, for example of the order of 800 ° C. This is all the more difficult in the irradiation conditions of the experiment. For example, austenitic steels have a significantly reduced service life at temperatures above 450 ° C. For example, for austenitic steel X2CrNiMo17-12-2, the duration under irradiation in a research reactor core (typically with a damage of 12 dpa / year) is 4.4 years below 375 ° C and 2 years above 425 ° C. Similarly, creep and aging of the material are negligible regardless of the duration below 450 ° C, but they become significant from 2000 hours at 525 ° C.
    [0003] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an experimental device for the irradiation of samples in a reactor allowing the samples to reach high temperatures while ensuring a mechanical strength of the together to satisfy the safety rules. The previously stated purpose is achieved by a device for irradiating samples having a chamber delimited by a jacketed enclosure, the chamber containing a container for containing a coolant, a sample holder penetrating the container so that the samples are immersed in the coolant, the container being adapted to hold high temperatures and the inside and outside of the container being in fluid communication so that the same pressure prevails between the inside of the container where the sample holder is located and the outside of the container. Thanks to the invention, the interior and exterior of the container being pressure-balanced, the material forming the container is not designed to withstand high pressure, the material or materials forming it may or may be chosen to hold high temperatures and have a mechanical strength at lower pressure. In addition, the gas outside the container, thermally isolates the enclosure of the heating zone of the samples, it can then be performed in a material or materials capable of maintaining high pressure but able to maintain a lower temperature than that of the container. In a very advantageous manner, means for regulating the temperature of the samples are provided in or on the wall of the container. Preferably it is means for additional heating of the samples. This makes it possible to have precise control of the temperature of the irradiation conditions of the samples. The mechanical strength of the enclosure depends on the pressure, the temperature and the duration of irradiation. According to the invention, the enclosure being maintained at a temperature which does not substantially influence its mechanical strength thanks to the very clever use of the sky gas of the coolant in which the samples are immersed as thermal insulation between the container holding the temperature and the enclosure, it can ensure its safety function and the device can impose high temperature samples. Thus, with a relatively simple structure, it is possible to reach sample temperatures of the order of 800 ° C, or even more while respecting the nuclear safety rules, i.e. while maintaining a double-walled enclosure. The subject of the present invention is therefore a device for irradiating a sample in the core or at the periphery of a core of a nuclear reactor comprising, a double wall enclosure delimiting a chamber, a container contained in said chamber, said container being maintained remote from an inner wall of the enclosure, said container being intended to contain a coolant, a sample holder whose free end is intended to be located in the container, wherein the interior of the container is in fluid communication with the outside of the container and in which a volume between the inner wall of the chamber and the container is intended to be filled with a gas or gas mixture, said sky heat transfer gas.
    [0004] The enclosure may include an outer wall intended to be in contact with a heat transfer fluid of the reactor, and delimiting with the inner wall a volume of gas. In an advantageous example, the device comprises thermal regulation means carried by the container.
    [0005] The thermal regulation means may advantageously comprise at least additional heating means. For example, the additional heating means comprise at least one heating element on the outer surface of the container or, preferably, several heating elements distributed over all or part of the outer surface of the container.
    [0006] For example, the heating elements are distributed over all or part of the outer surface of the container along the longitudinal axis so as to separately heat different areas of the container along the longitudinal axis. Preferably, the thermal management means are covered with a protective coating, for example made by shooping. According to an additional feature, the device may comprise at least one temperature sensor carried by the container, for example a thermocouple. The inside of the container may be in fluid communication with the outside of the container at an upper end of the container by which is introduced the sample into the container. For example, the inner and outer walls and the container are tubular, closed at a lower end by a bottom. The inner and outer walls of the envelope may be for example stainless X2CrNiMo17-12-2 and the container is Inconel®718.
    [0007] The subject of the present invention is also a method for irradiating a sample using a device according to the invention, comprising the steps of: placing at least one sample in the container by introducing the sample holder into the device, the container containing a heat transfer fluid, - establishment of the device in the core or the periphery of the core of a nuclear reactor, - withdrawal of the device from the reactor and removal of the at least one sample of the device.
    [0008] In one example, the coolant is liquid, for example formed by a liquid metal or a liquid alloy, for example NaK or Na, and the sky heat transfer gas is located between the enclosure and the container. In another example, the coolant is a gas or a mixture of gases.
    [0009] During the irradiation, an additional supply of heat to the sample may advantageously be carried out. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood with the aid of the following description and the attached drawings, in which: FIG. 1 is a longitudinal sectional view of a schematic representation of an exemplary embodiment of FIG. A device for the sample irradiation according to the invention, - Figure 2 is a detail view of Figure 1, - Figure 3A is a graphical representation of the variation of the temperature within the device as a function of the radius of the device, in the case of a liquid coolant, - Figure 3B is a graphical representation of the variation of the temperature within the device as a function of the radius of the device, in the case of a gaseous coolant, - the figure 4 is a diagrammatic representation of an exemplary embodiment of the additional heating means that can be implemented in the device according to the invention; FIGS. 5A and 5B are diagrammatic representations of a Another embodiment of the additional heating means that can be implemented in the device according to the invention, - Figure 6 is a representation of an example of a variation profile of the thickness of the gas blade between the container and the inner surface of the enclosure.
    [0010] DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS FIG. 1 shows a schematic representation of a device for the irradiation of samples in a nuclear research reactor, more particularly in the core or at the periphery of the core of a reactor. nuclear research. The device for irradiation and the elements that compose it advantageously have a shape of revolution around a longitudinal axis X. The device comprises several concentric elements preferably tubular. The device for the irradiation is several meters long, for example 5m, and has a longitudinal portion intended to be located in the neutron flux zone corresponding to the fuel assemblies of the reactor, which for example extends over a height of 1 m. .
    [0011] In Figures 1 and 2, it is the portion to be arranged in the neutron flux region is shown and will be described in detail. The device comprises a sample holder 2 of X axis comprising a free longitudinal end 2.1 intended to hold the samples, this free longitudinal end 2.1 comprises for example a threaded rod or any means of maintaining a structure adapted to the geometry of the samples , to their establishment and their withdrawal. Each sample rack is designed to meet the specific need of the experiment, for example it may include actuators for constraining samples. It also includes various measurement sensors necessary for monitoring the experiment under irradiation, for example to measure the temperature, the pressure, the evolution of the dimensions of the samples, the neutron and gamma fluxes, etc. The sample holder 2 can be slidably inserted and removed along the longitudinal axis X to allow the sample change. The device also comprises a container 4 in which the free longitudinal end 2.1 of the sample holder is placed when the samples are in place. The container is intended to contain a heat transfer fluid in which the samples are immersed and through which the heat exchange is carried out. The container comprises a bottom closed bottom 4.1 and an upper open bottom 4.2 through which is introduced the sample holder 2. The bottom bottom 4.1 is for example welded to the side wall of the container.
    [0012] The coolant ensures the heat exchange between the samples, the container and the chamber in contact with the reactor coolant. The distance between the bottom 4.1 of the container and that 8.1 of the lower tubular wall is then such that it allows free expansion between the reservoir and the enclosure. The container 4 advantageously also receives measurement sensors, for example temperature and / or irradiation sensors. The device also comprises a double-walled enclosure 6 delimiting a chamber 7 for the container.
    [0013] The enclosure has an inner tubular wall 8 and an outer tubular wall 10, the two walls being concentric 8, 10. Each of the tubular walls 8, 10 is closed at its lower end by a lower bottom 8.1, 10.1 respectively. For example, the bottom bottoms 8.1, 10.1 are welded to one end of each tubular wall. The distance between the lower bottoms 8.1, 10.1 is such that it allows their free expansion. The container is fixed by its upper part on the inner wall of the enclosure, by a suitable mechanical means, the free expansion being possible downwards. Centering means are advantageously provided to maintain a gas blade 9 of substantially constant thickness between the two tubular walls over the entire height of the enclosure. For example, cold the distance between the inner face of the outer tubular wall 10 and the outer face of the inner tubular wall may be of the order of 0.2 mm. The two walls 8, 10 define between them a volume intended to contain the enclosure gas.
    [0014] The volume defined between the two walls is closed. The gas may be introduced by tubular stitching of small diameter, for example with an internal diameter of 2 mm located in the upper part of the enclosure. When a liquid coolant, such as a liquid metal such as NaK (sodium and potassium alloy), is used and fills the bottom of the container 4, the chamber 7 is filled with an inert gas, for example helium, or a mixture of gases compatible with the coolant. Indeed, the upper part of the container is filled with this gas or gas mixture, called heat transfer gas, and since the interior of the container is in communication with the chamber 7 by the upper end of the container, the chamber 7 is filled gas sky heat.
    [0015] The liquid coolant may be a metal or liquid metals, such as sodium, an alloy or liquid alloys such as NAK, salt or salts, or organic liquids etc. In the remainder of the description, the expression "upper sky gas" designates a gas or a mixture of gases.
    [0016] When a gaseous coolant, such as helium, for example, is used in the container, the latter also fills the chamber 7. The coolant may be a gas or a mixture of gases. The inner face of the inner tubular wall 8 is in contact with the sky heat transfer gas.
    [0017] The outer face of the outer tubular wall 10 is in contact with the heat transfer fluid of the research reactor, for example water, the circulation of which is symbolized by the arrows F. Advantageously, thermal regulation means 14 of the coolant contained in the container, are provided in the wall of the container or on the wall of the container. For example, it is heating means, alternatively could be provided cooling means or both heating means and cooling means. The heating means are for example formed by heating elements by Joule effect. Examples of embodiments of these means will be described below. The tubular walls 8, 10 are made of a material capable of holding high pressures, for example of the order of 16 bar for the diameter values given in Table 1 below. They are for example made of stainless steel, zirconium alloy, nickel alloy. The inner tubular wall 8 and the outer tubular wall 10 may be made of the same or different materials. For example, the tubular walls 8, 10 may be made of stainless steel X2CrNiMo17-12-2 The container is made of a material capable of withstanding high temperatures, for example of the order of at least 800 ° C with low deformation, it may be a metallic material such as nickel alloys (eg Inconel®, Incoloy®), stainless steels. Furthermore, centering means are advantageously provided to ensure over the entire height of the heating zone, a regular gas blade between the outer surface of the container and the inner tubular wall 8 of the enclosure of the device. This gas strip may be of constant thickness over the entire height of the container or, on the contrary, have longitudinal sections of different thicknesses along the container. Centering means are provided on the surface of the container, they are of small dimensions to limit the thermal bridges. It can be metallic bosses or ceramic centerpieces. We will now explain the operation of this device. The samples are fixed at the free end 2.1 of the sample holder 2 which is then introduced inside the device, into the container 4 which contains the coolant. The device is then introduced into the core of the research reactor or at the periphery. of it. The device is then immersed in the heat transfer fluid of the reactor. The device is subjected to nuclear radiation (gammas and neutrons), which causes the heating of various elements of the device and the coolant contained in the container. The samples are also heated. The thermal control means can be activated for example to increase the temperature of the sample by heating the coolant. This is for example about 800 ° C in the case of a liquid coolant. The container material allows the container to withstand high temperatures. The container 4 is surrounded by heat-carrying gas.
    [0018] The coolant gas contained in the chamber 7 forms a thermal insulation between the container, ie the high temperature zone and the inner tubular wall 8, which makes it possible to limit the temperature seen by this tubular wall 8 and more generally seen by the pregnant, the temperature is for example of the order of 350 ° C. Therefore, the materials used for the enclosure, although weakened by irradiation, retain sufficient mechanical properties so that the enclosure is able to withstand the mechanical stresses imposed by the pressure difference between the inside and the outside . Thus it is possible to reach high temperatures in the center of the device for the sample while ensuring the mechanical strength of the device. In FIGS. 3A and 3B, graphical representations of the temperature in ° C. in the device along its radius R in mm can be seen, the device being under irradiation. In the case of Figure 3A, the coolant is NaK liquid metal and the reactor coolant is water, for a nuclear power of 12.5W / g and an electric power of 200W / cm. It can be seen that in a central zone designated as having a radius less than about 14.55 mm, the temperature is substantially constant and is about 800 ° C. Between 14.55 and 15.6 mm, this zone is designated II and corresponds substantially to the outer diameter of the vessel and to the inner tubular wall of the enclosure 8, the temperature drops in the gas space 7, up to 350 ° which corresponds to the temperature of the inner tubular wall 8, then in the gaseous space 9 between the two walls of the enclosure, the temperature drops again up to 100 ° C at the outer tubular wall 10. Au above, the zone III from the tubular wall 10 and then outside the chamber 4 where circulates the coolant reactor, the temperature decreases more slowly to reach the reactor coolant temperature. In the case of Figure 3B, the coolant is helium and the reactor coolant is water, for a nuclear power of 12.5W / g and an electric power of 200W / cm. Even higher temperatures can be obtained by using a gas as coolant since temperatures of the order of 1400 ° C are reached in the center of the device (Zone 1 '). It is found that in a central zone corresponding to the samples, designated the radius of less than about 9.3 mm the temperature is substantially constant and is about 1400 ° C. Then between 9.3 mm and 12 mm, zone II 'corresponds to the temperature drop in the gas coolant inside the container. In the container (zone 111 '), between 12 mm and 14.6 mm the temperature remains constant around 750 ° C, and then drops in the gas space 7. In the chamber (zone IV') between 14.9 mm and 16.6 mm, the inner tubular wall 8 is at about 350 ° C, then in the gaseous space 9 the temperature drops again up to 100 ° C at the outer tubular wall 10. Beyond, the temperature slowly decreases to reach outside the enclosure 4 the reactor coolant temperature. The coolant gas is much less conductive than the NaK coolant, the heat exchange is less good, which allows to achieve a higher sample temperature than in the case of NaK. Moreover, the temperature drop is more marked in the gas coolant than in the NaK, which explains the difference in profile between the curves of FIGS. 3A and 3B. We can then see the effectiveness of the device according to the invention since the temperatures to which the enclosure is subjected correspond to the temperatures at which its mechanical properties are retained. In FIGS. 4 and 5A-5B, exemplary embodiments of the thermal control means formed by heating means can be seen. These are represented flat. In FIG. 4, the heating means comprise heating elements in wire form, in the example represented six separate heating wires designated 14.1 to 14.6. The son have their feed ends all located at the same end of the container, preferably the upper end for their connection to a power source. Each wire winds on the outer surface of the container so as to uniformly cover all or part of the height of the container and all or part of its perimeter. The heating elements are distributed over the height of the container so as to define six axially distributed heating zones. These six areas can be controlled separately. The axial zones C and D each comprise two heating elements 14.3 and 14.4, and 14.5 and 14.6 respectively. Preferably, the heating elements 14.3 and 14.4 are controlled so as to have a homogeneous heating of the zone C, and the heating elements 14.5 and 14.6 are controlled so as to have a homogeneous heating of the zone D. As a variant, a single wire heating covering the entire height and the entire periphery of the container could be implemented. Any number of heating wires can be implemented. In addition, heating wires extending the full height of the container but covering only an angular portion of the periphery of the container are not outside the scope of the present invention. The implementation of several independent zones makes it possible to modulate the heat input according to the axial and radial nuclear heating gradients. In addition, by implementing a single element, it would be more difficult to provide all the power required. Moreover, by implementing several elements, if one is defective, it is always possible to bring heat. Any additional heating means compatible with the geometry, the nuclear medium, the coolant can be implemented, for example induction heating means, resistive tube ...
    [0019] In Figure 5A, we can see another embodiment of the heating means also comprising six son but distributed differently. In Fig. 5B, a side view of the container having the heating means of Fig. 5A can be seen. The six heating elements 14.1 'to 14.6' are distributed along the six axial zones A to F.
    [0020] For example, the outer surface of the container is machined to serve as a support for the heating son. For example, the yarns are of the monofilament type, and comprise an 80/20 nickel chromium core for the portion to be heated by the Joule effect, an inorganic MgO insulation and an Inconel®600 sheath. Machining is for example to reduce the outer diameter of the container and / or to achieve etchings to receive the son.
    [0021] Advantageously, temperature sensors, for example thermocouples, are also provided on the outer surface of the container to control the temperature of the device. Preferably, the heating means and the temperature sensors, if any, are covered with a coating to protect them. This coating makes it possible to more efficiently transfer the power provided by the heating elements to the container while limiting the rise in temperature of the heating elements to avoid damaging them. For example a thin ceramic layer (for example by shooping which will be described below) can be formed on the metal covering the heating elements. This coating can also provide a surface that can be ground to control the outside diameter. For example, the wires of the heating element or elements are arranged on the outer surface of the container without etching and are covered.
    [0022] The diameter of the son is such that the final diameter of the container is compatible with the enclosure that receives it and the gaseous space separating them. The coating is chosen so as to coat the heating elements and temperature sensors and to have limited porosity and to avoid oxidation of the metal. This coating is made for example by metallization, advantageously, the coating is made by a coating of Nickel alloy Inconel® type. Alternatively, the coating may be copper. This coating can be made by thermal spraying, also known as shooping. An embodiment by molding is also possible. Shoopage is well known to those skilled in the art. It is a dry surface treatment obtained by thermal spraying. Shoopage combines several processes that have the common point of melting a filler material and then projecting it in the form of droplets with a carrier gas. The deposit is formed by a successive stack of droplets of molten material or in the pasty state, which leads to a lamellar structure. The adhesion of the coating is obtained essentially by a mechanical phenomenon and the surface of the parts is previously prepared to increase the roughness and promote the attachment. After formation of this coating on the outer surface of the container, stabilization annealing may be advantageously carried out. The coating thus formed is then machined to a constant diameter or in an axially variable profile in order to have a thickness of gas between the container 4 and the non-constant enclosure 6, an example of a profile of variable thickness is shown schematically on the Figure 6. Numerical values given are examples of the outer diameter of the container. This variable profile advantageously makes it possible to modulate the heat exchanges axially. The thickness variation of the gas preferably corresponds substantially to the zones ABCD of the heating elements, as can be seen by comparison with FIG. 4. Above the heating zone, the routing of the cables of the heating elements and thermocouples is in the gaseous space between the container 4 and the enclosure 6. As a non-limiting example, we will give design values of an exemplary device for irradiation according to the invention. The double jacket enclosure is made of two tubular stainless steel walls X2CrNiMo17-12-2.
    [0023] The values of the internal and external diameters are given in Table 1 Internal diameter (mm) External diameter (mm) Inner tubular partition 29.7 30.9 External tubular partition 31.2 33.1 Table 1 The container is for example Inconel ® 718. Its length is approximately 1 m, for an internal diameter of 24.1 mm and for an external diameter of 25.3 mm. About 700 mm, the outer side face of the container 2 is machined to the outer diameter of 24.9 mm to serve as a support for six heating elements (EC). The heating elements are of the nickel chromium 80 / monofilar type with MgO mineral insulation and Inconel® 600 sheath. In the examples given, the heating elements make it possible to increase the temperature of approximately 150 ° C in the case of the NaK coolant, and about 75 ° C for the gas coolant. The axial space between the heating zones A to D is of the order of 10 mm.
    [0024] The six heating elements have a heating length of 1500 mm and a diameter of 1 mm. Twelve K-type thermocouples with a diameter of 1 mm are placed in the heating zones. The heating height is of the order of 450 mm. After stabilization annealing, the metal coating obtained by shooping is machined to a constant diameter, in the described case: 29.1 mm. The coating covers all the heating elements and extends on both sides of the heating elements, for example a few centimeters. For example the container is capable of holding a temperature of the order of 800 ° C while the enclosures of the enclosure can be made to maintain a temperature of the order of 450 ° C and for example a pressure of 16 bar for the diameters given in Table 1. It will be understood that in view of the very great length of the device with respect to its transverse dimensions, particular care is taken to the realization of the inner and outer tubular walls and the container to obtain a very good concentricity and thicknesses of the gas film in the enclosure and the gas film between the container is the chamber 20 controlled. The device for irradiation is of relatively simple structure and allows to impose very high temperatures to the samples while respecting the safety rules. 25
    权利要求:
    Claims (17)
    [0001]
    REVENDICATIONS1. Device for irradiating a sample in the core or at the periphery of a core of a nuclear reactor comprising, a chamber (6) with a double wall delimiting a chamber (7), a container (4) contained in said chamber (7), said container (4) being kept at a distance from an inner wall (8) of the enclosure, said container (4) being intended to contain a coolant, a sample holder (2), a free end of which is intended to be located in the container (4), wherein the interior of the container is in fluid communication with the outside of the container and wherein a volume between the inner wall (8) of the enclosure (6) and the container (4) is intended to be filled with a gas or mixture of gases, said heat-carrying gas.
    [0002]
    2. Device according to claim 1, wherein the enclosure comprises an outer wall (10) intended to be in contact with a heat transfer fluid of the reactor, and defining with the inner wall (8) a volume (9) of gas.
    [0003]
    3. Device according to claim 1 or 2, comprising thermal regulation means (14) carried by the container (4).
    [0004]
    4. Device according to claim 3, wherein the thermal control means comprise at least additional heating means.
    [0005]
    5. Device according to claim 4, wherein the additional heating means comprise at least one heating element (14.1, 14.2, 14.3, 14.4, 14.5, 14.6) on the outer surface of the container (4).
    [0006]
    6. Device according to claim 4 or 5, wherein the additional heating means comprise a plurality of heating elements (14.1, 14.2, 14.3, 14.4, 14.5, 14.6) distributed over all or part of the outer surface of the container (4).
    [0007]
    7. Device according to claim 6, wherein the heating elements (14.1, 14.2, 14.3, 14.4, 14.5, 14.6) are distributed over all or part of the outer surface of the container along the longitudinal axis (X) so to be able to separately heat different areas of the container (4) along the longitudinal axis (X).
    [0008]
    8. Device according to one of claims 3 to 7, wherein the thermal management means (14) are covered with a protective coating, for example made by shooping.
    [0009]
    9. Device according to one of claims 1 to 8, comprising at least one temperature sensor carried by the container, for example a thermocouple.
    [0010]
    10. Device according to one of claims 1 to 9, wherein the interior of the container (4) is in fluid communication with the outside of the container at an upper end (4.2) of the container through which is introduced. sample in the container (4).
    [0011]
    11. Device according to one of claims 1 to 10, wherein the inner walls (8) and outer (10) and the container (4) are tubular, closed at a lower end by a bottom.
    [0012]
    12. Device according to one of claims 1 to 11, wherein the inner walls (8) and outer (10) of the casing are made of stainless steel X2CrNiMo17-12-2 and the container is made of Inconel®718.
    [0013]
    13. A method for irradiating a sample using a device according to one of claims 1 to 12, comprising the steps - establishment of at least one sample in the container (4) by introduction of the sample holder (2) in the device, the container (4) containing a heat transfer fluid, - setting up the device in the core or at the periphery of the core of a nuclear reactor, - removing the device from the reactor and removing the at least one sample of the device.
    [0014]
    14. Irradiation method according to claim 13, wherein the coolant is liquid, for example formed by a liquid metal or a liquid alloy, and the heat-transfer gas is located between the enclosure and the container.
    [0015]
    15. The irradiation method according to claim 14, wherein the coolant is NaK or Na.
    [0016]
    16. The irradiation method of claim 13, wherein the coolant is a gas or a mixture of gases.
    [0017]
    17. Irradiation method according to one of claims 13 to 16, wherein during irradiation an additional supply of heat to the sample is performed.
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    同族专利:
    公开号 | 公开日
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    RU2015101787A3|2018-05-10|
    JP2015145871A|2015-08-13|
    CN104795118B|2018-03-30|
    US20150206611A1|2015-07-23|
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    CN104795118A|2015-07-22|
    EP2899724B1|2016-12-14|
    EP2899724A1|2015-07-29|
    KR20150087813A|2015-07-30|
    ZA201500416B|2015-12-23|
    PL2899724T3|2017-06-30|
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    CN109859869A|2019-03-11|2019-06-07|中国核动力研究设计院|A kind of irradiation devices suitable for single fuel element transient test|
    CN110600160B|2019-09-18|2020-11-06|中国核动力研究设计院|Tube bundle set cooling loop irradiation device and circulation method thereof|
    CN110853793B|2019-11-26|2020-11-24|中国核动力研究设计院|Spiral ultralong cooling loop irradiation device|
    CN111370155A|2020-03-20|2020-07-03|中国核动力研究设计院|Miniaturized material irradiation device and use method|
    法律状态:
    2015-02-02| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-01| PLFP| Fee payment|Year of fee payment: 3 |
    2017-01-31| PLFP| Fee payment|Year of fee payment: 4 |
    2018-11-02| ST| Notification of lapse|Effective date: 20180928 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1450519A|FR3016726B1|2014-01-22|2014-01-22|DEVICE FOR THE IRRADIATION OF SAMPLES IN THE HEART OR PERIPHERY OF THE HEART OF A REACTOR|FR1450519A| FR3016726B1|2014-01-22|2014-01-22|DEVICE FOR THE IRRADIATION OF SAMPLES IN THE HEART OR PERIPHERY OF THE HEART OF A REACTOR|
    PL15151770T| PL2899724T3|2014-01-22|2015-01-20|Device for irradiating samples in the core or periphery of the core of a reactor|
    EP15151770.3A| EP2899724B1|2014-01-22|2015-01-20|Device for irradiating samples in the core or periphery of the core of a reactor|
    ES15151770.3T| ES2619655T3|2014-01-22|2015-01-20|Device for irradiation of samples in the core and in the periphery of the core of a reactor|
    JP2015009779A| JP2015145871A|2014-01-22|2015-01-21|Device for irradiation of samples in core or at periphery of core of reactor|
    ZA2015/00416A| ZA201500416B|2014-01-22|2015-01-21|Device for irradiation of samples in the core or at the periphery of the core of a reactor|
    US14/601,738| US20150206611A1|2014-01-22|2015-01-21|Device for irradiation of samples in the core or at the periphery of the core of a reactor|
    KR1020150010188A| KR20150087813A|2014-01-22|2015-01-21|Device for irradiation of samples in the core or at the periphery of the core of a reactor|
    RU2015101787A| RU2660829C2|2014-01-22|2015-01-21|Device for irradiation of samples in core or at periphery of core of reactor|
    CN201510033287.2A| CN104795118B|2014-01-22|2015-01-22|The device of irradiation for sample in reactor core or at reactor core periphery|
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