Partitioned temperature control irradiation device

Abstract

The invention provides a partition temperature control irradiation device, and belongs to the technical field of nuclear irradiation devices, the partition temperature control irradiation device is characterized in that a first connecting pipe connects a first test section and a second test section, by adjusting the first connecting pipe, on one hand, the first connecting pipe can play a role in protecting a second pipe group, and on the other hand, by adjusting the first connecting pipe, the second pipe group can play a role in protecting the second pipe group; the relative position between the first test section and the second test section can be adjusted, so that the axial position of the second test section can be adjusted, and the ventilation volume of temperature control loops of the first pipe group and the second pipe group and the component proportion of mixed gas are respectively controlled; according to the irradiation device, samples at different positions in the axial direction of the irradiation pore channel can meet different or same test temperature requirements, control over multiple test temperatures is achieved in the same irradiation device, the temperature control range of the irradiation device is expanded, and the temperature control precision of the irradiation device is improved by adjusting the axial position of the second test section.

Description

Technical Field

[0001] The present application belongs to the technical field of nuclear irradiation devices, and specifically relates to a zoned temperature-controlled irradiation device. Background Art

[0002] In recent years, nuclear power development has entered a critical historical period of rapid development. With the widespread application of new materials in the nuclear power sector, the need to develop advanced nuclear material R&D capabilities has become increasingly urgent, necessitating the selection and performance research of new materials. The most critical property of new nuclear materials is radiation resistance. Irradiation tests are typically conducted to examine changes in mechanical properties and other aspects of new materials under irradiation, thereby determining whether the new materials meet operational requirements.

[0003] The key to material irradiation testing lies in the irradiation apparatus, which holds the sample and ensures that the device is placed in the designated location for testing under the required temperature, flux, and environment. Existing material irradiation apparatuses mostly use inert gas to regulate temperature, controlling the temperature by adjusting the composition and flux of the inert gas. However, during actual testing, the temperature of the sample within the irradiation apparatus varies significantly, making it difficult to control within the ideal range. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, according to an embodiment of the present application, a zoned temperature-controlled irradiation device is proposed, comprising:

[0006] a first test section, the first test section including a first tube group;

[0007] an auxiliary sealing section, wherein a first end of the auxiliary sealing section is connected to a first end of the first test section, the first tube group passes through the auxiliary sealing section, and the first tube group is sealedly connected to the auxiliary sealing section;

[0008] An air nozzle cage assembly is connected to the second end of the auxiliary sealing section, the first tube group passes through the air nozzle cage assembly, and the first tube group is sealed and connected to the air nozzle cage assembly;

[0009] a first connecting pipe, wherein a first end of the first connecting pipe is connected to the second end of the first test section;

[0010] The second test section is coaxially arranged with the first test section, the second test section is connected to the second end of the first connecting pipe, the second test section includes a second tube group, the second tube group passes through the first connecting pipe, the first test section, the auxiliary sealing section and the air nozzle cage assembly in sequence, the second tube group is sealed connected to the auxiliary sealing section, and the second tube group is sealed connected to the air nozzle cage assembly.

[0011] In a feasible embodiment, the first test section includes:

[0012] A first housing, comprising a first shell, a first top cover, and a second top cover. The first shell is cylindrical, the first top cover and the second top cover are respectively sealed to two ends of the first shell, and the first top cover, the second top cover, and the first shell enclose a first accommodating cavity.

[0013] A first clamping block is provided with a first sample cavity and a neutron detection box, the first clamping block is movably disposed in the first accommodating cavity, and the first tube group is connected to the first accommodating cavity through a through hole on the second top cover;

[0014] a first positioning block, wherein a first end of the first positioning block is connected to a first end of the first clamping block, and a second end of the first positioning block is in contact with the first top cover;

[0015] a first elastic positioning block, wherein a first end of the first elastic positioning block is connected to a second end of the first clamping block, and a distance exists between the second end of the first elastic positioning block and the second top cover;

[0016] The first elastic member is arranged on the first elastic positioning block, the first elastic member is fitted with the second top cover, and the first elastic member is elastically connected to the second top cover.

[0017] In a feasible embodiment, the first tube group is arranged on the second top cover, and the second tube group includes a first air outlet pipe and two first air inlet pipes. The first air outlet pipe is arranged along the axis of the first shell, and the two first air inlet pipes are symmetrically arranged on both sides of the first air outlet pipe.

[0018] In a feasible embodiment, the second test section includes:

[0019] The second housing includes a second shell, a third top cover, and a fourth top cover. The second shell is cylindrical. The third top cover and the fourth top cover are respectively sealed at two ends of the second shell. The third top cover, the fourth top cover, and the second shell enclose a second accommodating cavity.

[0020] a second clamping block, wherein a second sample cavity is provided in the second clamping block, the second clamping block is movably disposed in the second accommodating cavity, and the second tube assembly is connected to the second accommodating cavity through a through hole on the fourth top cover;

[0021] a second positioning block, wherein a first end of the second positioning block is connected to a first end of the second clamping block, and a second end of the second positioning block is in contact with the third top cover;

[0022] a second elastic positioning block, wherein a first end of the second elastic positioning block is connected to a second end of the second clamping block, and a distance is formed between the second end of the second elastic positioning block and the fourth top cover;

[0023] The second elastic member is arranged on the second elastic positioning block, the second elastic member is fitted with the fourth top cover, and the second elastic member is elastically connected to the fourth top cover.

[0024] In a feasible embodiment, the second tube group is arranged on the fourth top cover, and the second tube group includes a second air outlet pipe and two second air inlet pipes, and the two second air inlet pipes are symmetrically arranged on both sides of the second air outlet pipe.

[0025] In a feasible embodiment, the zoned temperature-controlled irradiation device further includes:

[0026] The first channel tube runs through the first test section along the length direction of the first test section. The first channel tube is sealed and connected to the first test section. The second tube group passes through the first channel tube, and there is a gap between the second tube group and the first channel tube.

[0027] In a feasible embodiment, the zoned temperature-controlled irradiation device further includes:

[0028] a second channel tube, wherein the second channel tube runs through the second test section along the length direction of the second test section, and the second channel tube is sealedly connected to the second test section;

[0029] A third test section, the third test section is connected to the second test section via a second connecting pipe, the third test section includes a third tube group, the third tube group sequentially passes through the second channel tube and the first channel tube, the third tube group is sealed to the auxiliary sealing section, and the second tube group is sealed to the air nozzle cage assembly;

[0030] There is a gap between the third tube group and the second channel tube, and there is a gap between the third tube group and the first channel tube.

[0031] In a feasible embodiment, the auxiliary sealing segment includes:

[0032] A protective tube connected to the first test section and sheathed around the outside of the first and second tube groups;

[0033] Positioning flange, the positioning flange is sleeved on the outside of the protective tube, and the positioning flange is connected to the protective tube;

[0034] A flange pipe is sleeved on the outside of the protective pipe, and a first end of the flange pipe is connected to the positioning flange;

[0035] A squirrel cage flange is connected to the second end of the flange pipe, the first tube group is sealedly connected to the squirrel cage flange, and the second tube group is sealedly connected to the squirrel cage flange;

[0036] An auxiliary connecting pipe is sleeved on the outside of the flange pipe, a first end of the auxiliary connecting pipe is embedded in the positioning flange, the auxiliary connecting pipe is connected to the positioning flange, and a second end of the auxiliary connecting pipe is embedded in the cage flange, the cage flange is connected to the auxiliary connecting pipe;

[0037] Lifting lugs are set on the squirrel cage flange.

[0038] In a feasible embodiment, the air nozzle cage assembly includes:

[0039] Rat cage cover;

[0040] A rat cage, wherein the rat cage is connected to a rat cage cover;

[0041] A sealing head assembly, the sealing head assembly passes through the squirrel cage;

[0042] Connect the trachea and pass it through the mouse cage;

[0043] The air nozzle is arranged on the connecting air pipe.

[0044] In a feasible embodiment, a thermocouple is provided in the first test tube, the thermocouple passes through the sealing head assembly, and the thermocouple is sealed and connected to the sealing head assembly.

[0045] Compared with the prior art, the zoned temperature-controlled irradiation device of the present application has the following beneficial effects:

[0046] The zoned temperature-controlled irradiation device provided in the embodiment of the present application includes a first test section, an auxiliary sealing section, an air nozzle cage assembly, a first connecting pipe and a second test section. The first test section and the second test section are coaxially arranged, and the two ends of the first connecting pipe are respectively connected to the first test section and the second test section. The first tube group of the first test section is sealed with the auxiliary sealing section and the air nozzle cage assembly at the same time, and the second tube group of the second test section passes through the first connecting pipe and the first test section, and the second tube group is sealed with the auxiliary sealing section and the air nozzle cage assembly at the same time, so that the first test section and the second test section have independent gas temperature control channels, so that the gas channels of the first test section and the second test section do not affect each other, forming an axial zoned structure; the first connecting pipe will The first test section is connected to the second test section. By adjusting the first connecting pipe, on the one hand, the first connecting pipe can protect the second tube group. On the other hand, by adjusting the first connecting pipe, the relative position between the first test section and the second test section can be adjusted, and then the axial position of the second test section can be adjusted. Then, by respectively controlling the ventilation volume and the ratio of the mixed gas components of the temperature control circuits of the first tube group and the second tube group, the irradiation device can achieve different or the same test temperature requirements for the specimens at different axial positions of the irradiation channel, and realize the control of multiple test temperatures in the same irradiation device, thereby expanding the temperature control range of the irradiation device. By adjusting the axial position of the second test section, the temperature control accuracy of the irradiation device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0048] Figure 1 A schematic structural diagram of a zoned temperature-controlled irradiation device according to an embodiment of the present application from a first angle;

[0049] Figure 2 A schematic structural diagram of a zoned temperature-controlled irradiation device according to an embodiment of the present application from a first angle;

[0050] Figure 3 A schematic structural diagram of a first test section of a zoned temperature-controlled irradiation device according to an embodiment of the present application at a first angle;

[0051] Figure 4 A schematic structural diagram of the first test section of a zoned temperature-controlled irradiation device according to an embodiment of the present application, viewed from a second angle;

[0052] Figure 5 A schematic structural diagram of a second test section of a zoned temperature-controlled irradiation device according to an embodiment of the present application, taken from a first angle;

[0053] Figure 6 A schematic structural diagram of a second test section of a zoned temperature-controlled irradiation device according to an embodiment of the present application, taken from a second angle;

[0054] Figure 7 This is a schematic structural diagram of the auxiliary sealing section of the zoned temperature-controlled irradiation device according to an embodiment of the present application, viewed from a first angle;

[0055] Figure 8 A schematic structural diagram of the auxiliary sealing section of the zoned temperature-controlled irradiation device according to an embodiment of the present application, viewed from a second angle;

[0056] Figure 9 A schematic structural diagram of an air nozzle cage assembly of a zoned temperature-controlled irradiation device according to an embodiment of the present application;

[0057] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0058] 11. First test section; 12. Auxiliary sealing section; 13. Nozzle cage assembly; 14. First connecting pipe; 15. Second test section; 16. First channel pipe; 17. First tube group; 18. Second tube group; 19. First sample chamber; 20. Neutron detection box; 21. Second sample chamber;

[0059] 111. First housing; 112. First clamping block; 113. First positioning block; 114. First elastic positioning block; 115. First elastic member;

[0060] 1111, first housing; 1112, first top cover; 1113, second top cover;

[0061] 121. Protective tube; 122. Positioning flange; 123. Flange tube; 124. Squirrel cage flange; 125. Auxiliary connecting tube; 126. Lifting lug;

[0062] 131. Squirrel cage cover; 132. Squirrel cage; 133. Sealing head assembly; 134. Connecting air pipe; 135. Air nozzle;

[0063] 151, second housing; 152, second clamping block; 153, second positioning block; 154, second elastic positioning block; 155, second elastic member;

[0064] 1511, second housing; 1512, third top cover; 1513, fourth top cover;

[0065] 171. First air outlet pipe; 172. First air inlet pipe; 181. Second air outlet pipe; 182. Second air inlet pipe. DETAILED DESCRIPTION

[0066] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0068] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0069] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0070] like Figure 1 and Figure 2 As shown, according to an embodiment of the present application, a zoned temperature-controlled irradiation device is proposed, comprising: a first test section 11, an auxiliary sealing section 12, an air nozzle cage assembly 13, a first connecting pipe 14, and a second test section 15; the first test section 11 comprises a first tube group 17; a first end of the auxiliary sealing section 12 is connected to a first end of the first test section 11, the first tube group 17 passes through the auxiliary sealing section 12, and the first tube group 17 is sealedly connected to the auxiliary sealing section 12; the air nozzle cage assembly 13 is connected to a second end of the auxiliary sealing section 12, the first tube group 17 passes through the air nozzle cage assembly 13 The first tube group 17 is sealed and connected to the air nozzle cage assembly 13; the first end of the first connecting tube 14 is connected to the second end of the first test section 11; the second test section 15 is coaxially arranged with the first test section 11, and the second test section 15 is connected to the second end of the first connecting tube 14. The second test section 15 includes a second tube group 18, which passes through the first connecting tube 14, the first test section 11, the auxiliary sealing section 12 and the air nozzle cage assembly 13 in sequence. The second tube group 18 is sealed and connected to the auxiliary sealing section 12, and the second tube group 18 is sealed and connected to the air nozzle cage assembly 13.

[0071] The zoned temperature-controlled irradiation device provided in the embodiment of the present application includes a first test section 11, an auxiliary sealing section 12, an air nozzle cage assembly 13, a first connecting pipe 14 and a second test section 15. The first test section 11 and the second test section 15 are coaxially arranged, and the two ends of the first connecting pipe 14 are respectively connected to the first test section 11 and the second test section 15. The first tube group 17 of the first test section 11 is sealedly connected to the auxiliary sealing section 12 and the air nozzle cage assembly 13 at the same time. The second tube group 18 of the second test section 15 passes through the first connecting pipe 14 and the first test section 11, and the second tube group 18 is sealedly connected to the auxiliary sealing section 12 and the air nozzle cage assembly 13 at the same time, so that the first test section 11 and the second test section 15 have independent gas temperature control channels, so that the gas channels of the first test section 11 and the second test section 15 do not affect each other, forming an axial Partitioned structure; the first connecting pipe 14 connects the first test section 11 and the second test section 15. By adjusting the first connecting pipe 14, on the one hand, the first connecting pipe 14 can protect the second tube group 18. On the other hand, by adjusting the first connecting pipe 14, the relative position between the first test section 11 and the second test section 15 can be adjusted, and then the axial position of the second test section 15 can be adjusted. Then, by respectively controlling the ventilation volume and the ratio of the mixed gas components of the temperature control circuits of the first tube group 17 and the second tube group 18, the irradiation device can achieve different or the same test temperature requirements for the specimens at different axial positions of the irradiation channel, and realize the control of multiple test temperatures in the same irradiation device, thereby expanding the temperature control range of the irradiation device. By adjusting the axial position of the second test section 15, the temperature control accuracy of the irradiation device is improved.

[0072] Furthermore, the relative position of the first test section 11 and the second test section 15 is adjusted by adjusting the length of the first connecting tube 14. Based on test requirements, and because the heat release rates vary at different axial positions within the irradiation device, the second test section 15 can be stably supported by replacing the first connecting tube 14 with different lengths. Adjusting the distance between the first and second test sections 11, 15 allows for adjustment of the axial position of the second test section 15, ensuring that the second test section 15 is positioned at the desired heat release rate, enabling rapid and effective control of the test temperature of the second test section 15.

[0073] Specifically, the outer diameters of both ends of the first connecting pipe 14 are respectively consistent with the outer diameters of the first test section 11 and the second test section 15 .

[0074] Furthermore, since the first test section 11 and the second test section 15 have independent first tube groups 17 and second tube groups 18, regulating gases with different thermal conductivities can be used according to the heat release rates of the axial positions of the first test section 11 and the second test section 15 in the research reactor and the different air gap thicknesses, thereby establishing a stronger temperature regulation capability for the first test section 11 and the second test section 15, and further expanding the temperature control range of the irradiation device.

[0075] like Figure 3 and Figure 4 As shown, in a feasible embodiment, the first test section 11 includes: a first shell 111, a first clamping block 112, a first positioning block 113, a first elastic positioning block 114 and a first elastic member 115; the first shell 111 includes a first shell 1111, a first top cover 1112 and a second top cover 1113, the first shell 1111 is cylindrical, the first top cover 1112 and the second top cover 1113 are respectively sealed and connected to the two ends of the first shell 1111, the first top cover 1112, the second top cover 1113 and the first shell 1111 are surrounded by a first accommodating cavity; a first sample cavity 19 and a neutron detection box 20 are provided in the first clamping block 112, and the first clamping block 11 2 is movably disposed in the first accommodating cavity, and the first tube group 17 is connected to the first accommodating cavity through the through hole on the second top cover 1113; the first end of the first positioning block 113 is connected to the first end of the first clamping block 112, and the second end of the first positioning block 113 is in contact with the first top cover 1112; the first end of the first elastic positioning block 114 is connected to the second end of the first clamping block 112, and a gap is formed between the second end of the first elastic positioning block 114 and the second top cover 1113; the first elastic member 115 is disposed on the first elastic positioning block 114, in contact with the second top cover 1113, and elastically connected to the second top cover 1113.

[0076] In this technical solution, a first sample cavity 19 and a neutron detection box 20 are provided on the first clamping block 112. The first clamping block 112 is movably arranged in the first shell 111. The first top cover 1112 seals one end of the first shell 1111 and supports one end of the first clamping block 112 through the first positioning block 113. The second top cover 1113 seals the other end of the first shell 1111 and elastically supports the other end of the first clamping block 112 through the first elastic positioning block 114 and the first elastic member 115, so that the first clamping block 112 is in a closed space. At the same time, a certain amount of expansion space is reserved for the first clamping block 112 to absorb the deformation of the first clamping block 112 and the irradiated sample caused by expansion during the irradiation process, and prevent the first clamping block 112 from moving significantly in the axial direction of the first shell 111, thereby maintaining the stability of the irradiated sample and the neutron detection box 20 in the first test section 11, which is conducive to ensuring the detection accuracy of the neutron detection box 20.

[0077] Furthermore, the first clamping block 112 is a cylindrical structure, so that the first test section 11 is a central structure, which helps to improve the temperature uniformity in the first test section 11.

[0078] Furthermore, the outer diameter of the first clamp 112 can be adjusted according to its own heat release rate at the axial position in the research reactor and the irradiation test temperature required by the first test section 11, thereby forming different air gap thicknesses in the first test section 11 to further expand the temperature control range of the first test section 11.

[0079] In some examples, three first elastic members 115 are installed on the first elastic positioning block 114 , and the first elastic members 115 are evenly arranged along the circumference of the first elastic positioning block 114 to improve the uniformity of force on the first clamping block 112 and improve the smoothness of movement of the first clamping block 112 .

[0080] like Figure 4 As shown, in a feasible embodiment, the first tube group 17 is arranged on the second top cover 1113, and the second tube group 18 includes a first air outlet pipe 171 and two first air inlet pipes 172, the first air outlet pipe 171 is arranged along the axis of the first shell 111, and the two first air inlet pipes 172 are symmetrically arranged on both sides of the first air outlet pipe 171.

[0081] In this technical solution, the first air outlet pipe 171 is welded to the second top cover 1113 to form a gas outflow channel for the first test section 11; the two first air inlet pipes 172 are welded to the second top cover 1113 to form a gas inflow channel for the first test section 11, and then an independent gas channel for the first test section 11 is formed, so that the first test section 11 can be independently temperature-controlled through the first tube group 17; by setting the first air outlet pipe 171 along the axis of the first shell 111, and symmetrically arranging the two first air inlet pipes 172 on both sides of the first air outlet pipe 171, welding space is reserved for the first tube group 17 in a narrow size, thereby reducing the difficulty of welding.

[0082] like Figure 5 and Figure 6As shown, in a feasible embodiment, the second test section 15 includes: a second shell 151, a second clamping block 152, a second positioning block 153, a second elastic positioning block 154 and a second elastic member 155; the second shell 151 includes a second shell 1511, a third top cover 1512 and a fourth top cover 1513, the second shell 1511 is cylindrical, the third top cover 1512 and the fourth top cover 1513 are respectively sealed and connected to the two ends of the second shell 1511, and the third top cover 1512, the fourth top cover 1513 and the second shell 1511 are surrounded by a second accommodating cavity; a second sample cavity 21 is provided in the second clamping block 152, and the second clamping block 152 is movable The second tube group 18 is connected to the second accommodating cavity through the through hole on the fourth top cover 1513; the first end of the second positioning block 153 is connected to the first end of the second clamping block 152, and the second end of the second positioning block 153 is fitted with the third top cover 1512; the first end of the second elastic positioning block 154 is connected to the second end of the second clamping block 152, and there is a gap between the second end of the second elastic positioning block 154 and the fourth top cover 1513; the second elastic member 155 is provided on the second elastic positioning block 154, the second elastic member 155 is fitted with the fourth top cover 1513, and the second elastic member 155 is elastically connected to the fourth top cover 1513.

[0083] In this technical solution, a second sample cavity 21 is provided on the second clamping block 152, and the second clamping block 152 is movably arranged in the second outer shell 151. The third top cover 1512 seals one end of the second shell 1511 and supports one end of the second clamping block 152 through the second positioning block 153. The fourth top cover 1513 seals the other end of the second shell 1511 and elastically supports the other end of the second clamping block 152 through the second elastic positioning block 154 and the second elastic member 155, so that the second clamping block 152 is in a confined space. At the same time, a certain expandable space is reserved for the second clamping block 152 to absorb the deformation caused by the expansion of the second clamping block 152 and the irradiated sample during the irradiation process, and prevent the second clamping block 152 from moving significantly in the axial direction of the second outer shell 151, thereby maintaining the stability of the irradiated sample in the second test section 15.

[0084] Furthermore, the second clamping block 152 is a cylindrical structure, so that the second test section 15 is a central structure, which helps to improve the temperature uniformity in the second test section 15.

[0085] Furthermore, the outer diameter of the second clamp 152 can be adjusted according to its own heat release rate at the axial position in the research reactor and the irradiation test temperature required by the second test section 15, thereby forming different air gap thicknesses in the second test section 15 to further expand the temperature control range of the second test section 15.

[0086] In some examples, three second elastic members 155 are installed on the second elastic positioning block 154 , and the second elastic members 155 are evenly arranged along the circumference of the second elastic positioning block 154 to improve the uniformity of the force applied to the second clamping block 152 and improve the smoothness of the movement of the second clamping block 152 .

[0087] like Figure 6 As shown, in a feasible embodiment, the second tube group 18 is set on the fourth top cover 1513, and the second tube group 18 includes a second air outlet pipe 181 and two second air inlet pipes 182, and the two second air inlet pipes 182 are symmetrically arranged on both sides of the second air outlet pipe 181; the second sample chamber 21 is set along the axis of the second air outlet pipe 181.

[0088] In this technical solution, the second air outlet pipe 181 is welded to the fourth top cover 1513 to form a gas outflow channel for the second test section 15; the two second air inlet pipes 182 are welded to the fourth top cover 1513 to form a gas inflow channel for the second test section 15, forming an independent gas channel for the second test section 15, so as to independently control the temperature of the second test section 15 through the second tube group 18; by symmetrically arranging the two second air inlet pipes 182 on both sides of the second air outlet pipe 181, on the one hand, sufficient welding space is left for the welding of the second tube group 18, which is convenient for operation; on the other hand, since the second air outlet pipe 181 and the two second air inlet pipes 182 all need to pass through the hole reserved in the first test section 11, the two second air inlet pipes 182 are symmetrically arranged on both sides of the second air outlet pipe 181, reducing the distance between the second air outlet pipe 181 and the two second air inlet pipes 182, so that the second air outlet pipe 181 and the second air inlet pipe 182 can be bent and passed through.

[0089] like Figure 1 As shown, in a feasible embodiment, the zoned temperature-controlled irradiation device also includes: a first channel tube 16; the first channel tube passes through the first test section 11 along the length direction of the first test section 11, the first channel tube 16 is sealedly connected to the first test section 11, the second tube group 18 passes through the first channel tube 16, and there is a gap between the second tube group 18 and the first channel tube 16.

[0090] In this technical solution, the first channel tube 16 passes through the first top cover 1112 and the second top cover 1113. By making the second tube group 18 pass through the first test section 11 from the first channel tube 16 and connected through the first connecting tube 14, the first test section 11 and the second test section 15 form an axial partitioned structure, and the second test section 15 has an independent gas regulating circuit, which can be used to control the temperature of the second test section 15 separately through the second tube group 18; by making the first channel tube 16 sealedly connected to the first top cover 1112 and the second top cover 1113 at the same time, the first test section 11 is sealed, so that the second pipeline can be opened without destroying the sealed structure of the first test section 11. The second test section 11 is smoothly passed to the auxiliary sealing section 12 to ensure that after the second pipeline passes through the first test section 11, the first test section 11 remains sealed and has the function of independently adjusting the gas circuit. The axial partitioning structure formed by the first test section 11 and the second test section 15 can flexibly control the temperature of the first test section 11 and the second test section 15, thereby effectively controlling the temperature of the test in the irradiation device and reducing the temperature difference range of the sample; by creating a gap between the second tube group 18 and the first channel tube 16, the second tube group 18 can be flexibly moved axially in the first channel tube 16, so as to flexibly adjust the axial position of the second test section 15 and reduce the difficulty of assembly.

[0091] Furthermore, by using regulating gases with different thermal conductivities according to the heat release rates of the first test section 11 and the second test section 15 at their axial positions within the research reactor and different air gap thicknesses, a stronger temperature regulation capability of the first test section 11 and the second test section 15 can be established.

[0092] In a feasible embodiment, the zoned temperature-controlled irradiation device also includes: a second channel tube and a third test section; the second channel tube passes through the second test section 15 along the length direction of the second test section 15, and the second channel tube is sealedly connected to the second test section 15; the third test section is connected to the second test section 15 through a second connecting tube, and the third test section includes a third tube group, which passes through the second channel tube and the first channel tube 16 in sequence, and the third tube group is sealedly connected to the auxiliary sealing section 12, and the second tube group 18 is sealedly connected to the air nozzle cage assembly 13; wherein, there is a gap between the third tube group and the second channel tube, and there is a gap between the third tube group and the first channel tube 16.

[0093] In this technical solution, the second channel tube passes through the third top cover 1512 and the fourth top cover 1513. By making the third tube group pass through the second test section 15 from the second channel tube and through the first test section 11 from the first channel tube 16 and then be sealed with the auxiliary sealing section 12 and the air nozzle squirrel cage assembly 13, the third test section has an independent gas regulating circuit, and the temperature of the third test section can be controlled independently through the third tube group; by making the second channel tube simultaneously sealed with the third top cover 1512 and the fourth top cover 1513, the second test section 15 is sealed, so that the third pipeline can be opened without damaging the first test section 11 and the second test section 15. In a closed structure, it can smoothly pass to the auxiliary sealing section 12 to ensure that after the third pipeline passes through the second test section 15, the first test section 11 and the second test section 15 still have the function of independently adjusting the gas circuit, so that the first test section 11, the second test section 15 and the third test section constitute an axially partitioned structure; by making the third tube group pass through the second channel tube and the first channel tube 16 in sequence, and there is a gap between the third tube group and the first channel tube 16 and the second channel tube, the third tube group can be flexibly moved axially in the first channel tube 16 and the second channel tube, so as to flexibly adjust the axial position of the third test section and reduce the difficulty of operation.

[0094] In this technical solution, the axial partitioning structure is realized through multiple test sections. By setting channel pipes on all test sections before this test section, each test section has an independent gas control system, ensuring that the pipe groups in each test section are independent of each other and do not affect each other.

[0095] Furthermore, the number of third test sections can be increased according to actual test needs to achieve multi-temperature and multi-injection index requirements in one irradiation device, and it is only necessary to reserve enough tube groups on all test sections before the end to pass through the channel tube.

[0096] Furthermore, the number of air inlet pipes in each pipe group can be increased according to actual test requirements, so that a variety of gases with different thermal conductivities can be introduced and mixed in the closed test section to achieve a stronger temperature regulation capability for the test section.

[0097] like Figure 7 and Figure 8As shown, in a feasible embodiment, the auxiliary sealing section 12 includes: a protective tube 121, a positioning flange 122, a flange tube 123, a squirrel cage flange 124, an auxiliary connecting tube 125 and a lifting lug 126; the protective tube 121 is connected to the first test section 11, and the protective tube 121 is simultaneously sleeved on the outside of the first tube group 17 and the second tube group 18; the positioning flange 122 is sleeved on the outside of the protective tube 121, and the positioning flange 122 is connected to the protective tube 121; the flange tube 123 is sleeved on the outside of the protective tube 121, and the first end of the flange tube 123 is connected to the positioning flange 124. 22 is connected; the squirrel cage flange 124 is connected to the second end of the flange pipe 123, the first tube group 17 is sealedly connected to the squirrel cage flange 124, and the second tube group 18 is sealedly connected to the squirrel cage flange 124; the auxiliary connecting pipe 125 is sleeved on the outside of the flange pipe 123, the first end of the auxiliary connecting pipe 125 is embedded in the positioning flange 122, the auxiliary connecting pipe 125 is connected to the positioning flange 122, the second end of the auxiliary connecting pipe 125 is embedded in the squirrel cage flange 124, and the squirrel cage flange 124 is connected to the auxiliary connecting pipe 125; the lifting lug 126 is provided on the squirrel cage flange 124.

[0098] In this technical solution, the entire irradiation device is installed on the research reactor through the positioning flange 122 of the auxiliary sealing section 12. A through hole is opened in the middle of the positioning flange 122 for passing the first tube group 17 and the second tube group 18. The protective tube 121 and the flange tube 123 are fixed by welding. The two ends of the auxiliary connecting tube 125 are respectively welded and fixed to the positioning flange 122 and the squirrel cage flange 124. The flange tube 123 is clamped and fixed between the positioning flange 122 and the squirrel cage flange 124. The protective tube 121 is sleeved on the outside of the first tube group 17 and the second tube group 18 to prevent the first tube group 17 and the second tube group 18 from being exposed and to protect the first tube group 17 and the second tube group 18. The first test section 11 is sealed connected to the squirrel cage flange 124 through the first tube group 17, and the second test section 15 is sealed connected to the squirrel cage flange 124 through the second tube group 18. The lifting lug 126 is welded and fixed to the squirrel cage flange 124 so that the entire irradiation device can be extracted and transported through the lifting lug 126.

[0099] Furthermore, the entire irradiation device is mounted on the top cover or bell mouth of the research reactor via the positioning flange 122 of the auxiliary sealing section 12 .

[0100] Furthermore, the length of the auxiliary sealing section 12 can be adjusted to adjust the axial positions of the first test section 11 and the second test section 15 in the research reactor, and the distances from the first test section 11 and the second test section 15 to the center of the active area of ​​the research reactor can be adjusted.

[0101] like Figure 9As shown, in a feasible embodiment, the air nozzle cage assembly 13 includes: a cage cover 131, a cage 132, a sealing head assembly 133, a connecting air pipe 134 and an air nozzle 135; the cage 132 is connected to the cage cover 131; the sealing head assembly 133 passes through the cage 132; the connecting air pipe 134 passes through the cage 132; and the air nozzle 135 is arranged on the connecting air pipe 134.

[0102] In this technical solution, the pipe group consists of an air inlet pipe and an air outlet pipe, and the air nozzle 135 is installed on the air inlet pipe and the air outlet pipe of the pipe group, which is used to connect the pipe group to the air conditioning system, and the air pipe 134 is connected to the external air outlet through the air nozzle 135 to form an air flow channel between the air conditioning system and the test section; all the air inlet pipes and air outlet pipes pass through the auxiliary sealing section 12 and are welded and sealed with the auxiliary sealing section 12; the thermocouple is connected to the line of the air conditioning system after passing through the air outlet pipe, and all the air outlet pipes pass through the auxiliary sealing section 12 and the squirrel cage 132, and the end of the air outlet pipe is welded and sealed with the squirrel cage 132; all the air inlet pipes pass through the auxiliary sealing section 12, and the end of the air inlet pipe is welded and sealed with the air nozzle 135, so as to realize the separation of the air outlet pipe and the thermocouple through the squirrel cage 132, ensure the sealing of the pipe group and the air nozzle squirrel cage assembly 13, ensure that the connection between the pipe group and the air conditioning system is leak-proof, and ensure the accuracy and effectiveness of temperature control through the pipe group.

[0103] In a feasible embodiment, a thermocouple is provided in the first test tube, the thermocouple passes through the sealing head assembly 133 , and the thermocouple is sealed and connected to the sealing head assembly 133 .

[0104] In this technical solution, a thermocouple is welded on the neutron detection box 20 to monitor the temperature and serve as the input of the temperature control system to guide the air intake of the gas adjustment system. After the air intake is adjusted, it is monitored again by the thermocouple to observe whether it reaches the ideal value, so as to form a closed-loop adjustment, ensure the accuracy of temperature control, and improve the temperature control efficiency; by passing the thermocouple through the sealing head assembly 133 and sealing the thermocouple to the sealing head assembly 133, the thermocouple is sealed to prevent the gas with radiation dose from leaking from the thermocouple installation point, thereby reducing the environmental dose level and reducing the impact of radiation on the operator.

[0105] Example:

[0106] The irradiation device is transported using the lifting lug 126 of the auxiliary sealing section 12, and is installed on the bell mouth of the research reactor top through the positioning flange 122 of the auxiliary sealing section 12. A through hole is provided in the middle of the positioning flange 122 for passing through the air inlet and air outlet pipes. Air nozzles 135 are respectively installed on the air inlet and air outlet pipes for connecting to the air conditioning system. Each tube group includes an air outlet pipe and two air inlet pipes, which are respectively inserted into the independent temperature-controlled space of the corresponding test section. The first test section 11 and the second test section 15 are stacked and installed up and down and connected by the first connecting section. The second tube group 18 passes through the first channel tube 16. The first test section 11 is connected and fixed to the squirrel cage flange 124 through the first tube group 17. The protective tube 121 protects the first tube group 17 and the second tube group 18.

[0107] In the first test section 11, the outermost layer is the first shell 1111. The ends of the first shell 1111 are welded to the first top cover 1112 and the second top cover 1113, respectively, to form the first outer shell 111. The ends of the first channel tube 16 are also welded to the first top cover 1112 and the second top cover 1113, respectively, to form a sealed space between the first outer shell 111 and the first channel tube 16. The two first air inlet pipes 172 pass through the second top cover 1113 and are inserted into the first outer shell 111. They are welded and sealed to the second top cover 1113, forming a gas inflow channel. They are also welded and sealed to the auxiliary sealing section 12 and the air nozzle cage assembly 13. The first air outlet pipe 171 is inserted into the second top cover 1113 and welded to form a gas outflow channel. It is also welded and sealed to the auxiliary sealing section 12 and the air nozzle cage assembly 13. The first sample is installed in the first sample cavity 19 of the first clamping block 112. The two ends of the first clamping block 112 are movably installed in the first test section 11 through the first elastic member 115, so that the first clamping block 112 cannot move significantly in the axial direction and has a certain expansion space.

[0108] In the second test section 15, the outermost layer is the second shell 1511. The ends of the second shell 1511 are welded to the third and fourth top covers 1512 and 1513, respectively, forming a sealed space. Two second air inlet pipes 182 pass through the fourth top cover 1513 and are inserted into the second outer shell 151. They are welded and sealed to the fourth top cover 1513, forming a gas inflow channel. The second air outlet pipe 181 is inserted into the fourth top cover 1513 and sealed by welding, forming a gas outflow channel. The second specimen is installed within the second specimen cavity 21 of the second clamp 152. The ends of the second clamp 152 are movably mounted within the second test section 15 via second elastic members 155. This prevents significant axial movement of the second clamp 152 while allowing for expansion. The air inlet and outlet pipes of the second test section 15 extend through the first channel pipe 16 and smoothly flow to the auxiliary sealing section 12 without disrupting the sealed structure of the first test section 11. They are welded and sealed to the auxiliary sealing section 12 and the nozzle cage assembly 13.

[0109] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0110] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A zoned temperature-controlled irradiation device, characterized in that: The zoned temperature-controlled irradiation device comprises: a first test section, the first test section comprising a first tube group; an auxiliary sealing section, wherein a first end of the auxiliary sealing section is connected to a first end of the first test section, the first tube group passes through the auxiliary sealing section, and the first tube group is sealed and connected to the auxiliary sealing section; An air nozzle cage assembly, wherein the air nozzle cage assembly is connected to the second end of the auxiliary sealing section, the first tube group passes through the air nozzle cage assembly, and the first tube group is sealed and connected to the air nozzle cage assembly; a first connecting pipe, wherein a first end of the first connecting pipe is connected to a second end of the first test section; A second test section, the second test section is coaxially arranged with the first test section, the second test section is connected to the second end of the first connecting tube, the second test section includes a second tube group, the second tube group sequentially passes through the first connecting tube, the first test section, the auxiliary sealing section and the air nozzle cage assembly, the second tube group is sealed and connected to the auxiliary sealing section, and the second tube group is sealed and connected to the air nozzle cage assembly.

2. A zoned temperature-controlled irradiation device according to claim 1, characterized in that: The first test section includes: A first housing, wherein the first housing comprises a first shell, a first top cover and a second top cover, the first shell is cylindrical, the first top cover and the second top cover are respectively sealed and connected to two ends of the first shell, and the first top cover, the second top cover and the first shell enclose a first accommodating cavity; A first clamping block, wherein a first sample cavity and a neutron detection box are disposed in the first clamping block, the first clamping block is movably disposed in the first accommodating cavity, and the first tube group is connected to the first accommodating cavity through a through hole on the second top cover; A first positioning block, wherein a first end of the first positioning block is connected to a first end of the first clamping block, and a second end of the first positioning block is in contact with the first top cover; a first elastic positioning block, wherein a first end of the first elastic positioning block is connected to a second end of the first clamping block, and a distance exists between the second end of the first elastic positioning block and the second top cover; A first elastic member, wherein the first elastic member is arranged on the first elastic positioning block, the first elastic member is fitted with the second top cover, and the first elastic member is elastically connected with the second top cover.

3. A zoned temperature-controlled irradiation device according to claim 2, characterized in that: The first tube group is arranged on the second top cover, and the second tube group includes a first air outlet pipe and two first air inlet pipes, the first air outlet pipe is arranged along the axis of the first shell, and the two first air inlet pipes are symmetrically arranged on both sides of the first air outlet pipe.

4. The zoned temperature-controlled irradiation device according to claim 1, characterized in that: The second test section includes: A second housing, wherein the second housing comprises a second shell, a third top cover and a fourth top cover, the second shell is cylindrical, the third top cover and the fourth top cover are respectively sealed and connected to two ends of the second shell, and the third top cover, the fourth top cover and the second shell are surrounded by a second accommodating cavity; A second clamping block, wherein a second sample cavity is disposed in the second clamping block, the second clamping block is movably disposed in the second accommodating cavity, and the second tube group is connected to the second accommodating cavity through a through hole on the fourth top cover; a second positioning block, wherein a first end of the second positioning block is connected to a first end of the second clamping block, and a second end of the second positioning block is in contact with the third top cover; a second elastic positioning block, wherein a first end of the second elastic positioning block is connected to a second end of the second clamping block, and a distance exists between the second end of the second elastic positioning block and the fourth top cover; The second elastic member is arranged on the second elastic positioning block, the second elastic member is in contact with the fourth top cover, and the second elastic member is elastically connected to the fourth top cover.

5. A zoned temperature-controlled irradiation device according to claim 4, characterized in that: The second tube group is arranged on the fourth top cover, and the second tube group includes a second air outlet pipe and two second air inlet pipes, and the two second air inlet pipes are symmetrically arranged on both sides of the second air outlet pipe.

6. The zoned temperature-controlled irradiation device according to claim 1, characterized in that: The zoned temperature-controlled irradiation device also includes: A first channel tube, wherein the first channel tube passes through the first test section along the length direction of the first test section, the first channel tube is sealed and connected to the first test section, the second tube group passes through the first channel tube, and there is a gap between the second tube group and the first channel tube.

7. A zoned temperature-controlled irradiation device according to claim 6, characterized in that: The zoned temperature-controlled irradiation device also includes: a second channel tube, wherein the second channel tube passes through the second test section along the length direction of the second test section, and the second channel tube is sealed and connected to the second test section; A third test section, wherein the third test section is connected to the second test section via a second connecting pipe, the third test section comprises a third tube group, the third tube group sequentially passes through the second channel tube and the first channel tube, the third tube group is sealedly connected to the auxiliary sealing section, and the second tube group is sealedly connected to the air nozzle cage assembly; There is a gap between the third tube group and the second channel tube, and there is a gap between the third tube group and the first channel tube.

8. The zoned temperature-controlled irradiation device according to claim 1, characterized in that: The auxiliary sealing section comprises: A protection tube, the protection tube being connected to the first test section and being sleeved on the outside of the first tube group and the second tube group; A positioning flange, wherein the positioning flange is sleeved on the outer side of the protection tube and connected to the protection tube; A flange pipe, wherein the flange pipe is sleeved on the outside of the protection pipe, and a first end of the flange pipe is connected to the positioning flange; A squirrel cage flange, wherein the squirrel cage flange is connected to the second end of the flange pipe, the first tube group is sealedly connected to the squirrel cage flange, and the second tube group is sealedly connected to the squirrel cage flange; An auxiliary connecting pipe, wherein the auxiliary connecting pipe is sleeved on the outside of the flange pipe, a first end of the auxiliary connecting pipe is embedded in the positioning flange, the auxiliary connecting pipe is connected to the positioning flange, a second end of the auxiliary connecting pipe is embedded in the squirrel cage flange, and the squirrel cage flange is connected to the auxiliary connecting pipe; A lifting lug is arranged on the squirrel cage flange.

9. The zoned temperature-controlled irradiation device according to claim 1, characterized in that: The air nozzle cage assembly comprises: Rat cage cover; A squirrel cage, wherein the squirrel cage is connected to the squirrel cage cover; a sealing head assembly, the sealing head assembly passing through the squirrel cage; A connecting air pipe, wherein the connecting air pipe passes through the mouse cage; An air nozzle is arranged on the connecting air pipe.

10. The zoned temperature-controlled irradiation device according to claim 9, characterized in that: A thermocouple is arranged in the first test tube, the thermocouple passes through the sealing head assembly, and the thermocouple is sealed and connected to the sealing head assembly.

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