Irradiation device

Abstract

This application provides an irradiation device, including a sleeve assembly, a circulation drive assembly, and an electric heating assembly. The sleeve assembly forms an inner flow channel and an outer flow channel; the inner and outer flow channels are filled with fluid. The circulation drive assembly includes a support pipe section, a guide pipe, and a drive mechanism. The support pipe section is fitted onto the outside of the guide pipe. The drive mechanism is disposed at one end of the support pipe section, and the other end of the support pipe section is disposed at the open end of the sleeve assembly. The electric heating assembly is disposed inside the sleeve assembly. The circulation drive assembly is used to apply a forced circulation driving force to make the fluid circulate between the inner and outer flow channels to set different test temperatures. It can realize gas circulation drive inside the irradiation device, achieve the test temperature required for different irradiation samples, and form a universal irradiation device for different irradiation samples.

Description

Technical Field

[0001] This application belongs to the field of gas environment irradiation testing technology, and specifically relates to an irradiation device. Background Technology

[0002] Material irradiation tests can be classified into static container irradiation tests, instrumented irradiation tests, and loop irradiation tests based on the differences in technical approaches.

[0003] Among them, static container irradiation testing is a technical solution that encapsulates the test object in a sealed container for irradiation testing. This technical solution is relatively simple, easy to operate, and highly economical. Instrumented irradiation testing is a technical solution that allows for online monitoring and control of irradiation parameters, with high precision in controlling parameters such as test temperature. Loop irradiation testing can accurately construct the actual service environment of the test object. The heat of the test piece is removed by the loop coolant. Loop irradiation testing is mainly for fuels, but some materials have also undergone loop irradiation testing, such as in-core water chemical corrosion testing for structural materials.

[0004] However, current technology still has some limitations in material irradiation testing in gaseous environments. These limitations are mainly reflected in the following aspects: for low-temperature testing of certain materials with high heat generation, the current irradiation testing system is mainly based on air gap heat conduction, which makes it difficult to achieve the required test temperature; for high-temperature testing of certain non-metallic materials, due to their low heat generation, it is also difficult to achieve the required test temperature without the support of auxiliary heating methods. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this application is to provide an irradiation device that is based on material irradiation in a gaseous environment, and can achieve the test temperature required for different irradiated samples for different irradiation devices, thus forming a universal irradiation device for different irradiated samples.

[0006] To address the aforementioned problems, this application provides an irradiation device, comprising:

[0007] A sleeve assembly having an inner flow channel and an outer flow channel formed inside; the inner flow channel and the outer flow channel are filled with fluid;

[0008] A circulation drive assembly includes a support pipe section, a guide pipe, and a drive mechanism. The support pipe section is fitted onto the outside of the guide pipe. The drive mechanism is located at one end of the support pipe section, and the other end of the support pipe section is located at the open end of the sleeve assembly.

[0009] An electric heating assembly is disposed within the sleeve assembly;

[0010] The circulation drive assembly is used to apply a forced circulation drive force to cause the fluid to circulate between the inner flow channel and the outer flow channel in order to set different test temperatures.

[0011] Optionally, the sleeve assembly includes an outer sleeve, an inner sleeve, and a diverter tube. The inner sleeve and the diverter tube are sequentially disposed inside the outer sleeve. An internal first flow channel is formed inside the diverter tube. An interval space is provided between the diverter tube and the inner sleeve to form an external first flow channel. The open end of the inner sleeve extends at least partially to the outside of the outer sleeve.

[0012] Optionally, the outer sleeve includes an outer tube body and a connector seat. The connector seat is disposed on the outer peripheral surface of the outer tube body. Two connector ports are provided on the outer side of the connector seat. One connector port is connected to the second tube body, and the other connector port is connected to the first tube body. The first tube body extends through the connector seat into the heat insulation space formed by the outer sleeve and the inner sleeve.

[0013] Optionally, the inner sleeve includes an inner tube body and a sandwiched tube section, the top of the open end of the inner tube body is connected to the sandwiched tube section, and the wall thickness of the inner tube body is less than the wall thickness of the sandwiched tube section.

[0014] Optionally, multiple interlayer flow channels are machined axially on the wall of the interlayer pipe section, and the interlayer flow channels are connected to the external first flow channel.

[0015] Optionally, the wall of the jacketed pipe section is radially machined with through holes that communicate with the third pipe body, so that fluid can pass into the inner sleeve.

[0016] Optionally, one end of the guide tube is connected to the drive mechanism, and the other end extends into the sleeve assembly and is sealed to the sleeve assembly. An opening is provided on the guide tube in the circumferential direction. An internal second flow channel is formed inside the guide tube, and an external second flow channel is formed between the guide tube and the support tube section.

[0017] Optionally, the drive mechanism includes a shroud, one end of which is connected to the support pipe section, and a drive component is installed at the other end of the shroud. A drive shaft is provided inside the shroud, and the output shaft of the drive component extends through the shroud into the shroud and is connected to one end of the drive shaft. The other end of the drive shaft extends out of the shroud and is provided with an impeller at its end.

[0018] Optionally, the electric heating assembly includes at least two layers of heating tubes and a central tube, wherein the heating tubes are mounted on the central tube and both ends of the central tube extend beyond the heating tubes.

[0019] Optionally, the irradiation apparatus further includes a sample chamber assembly located within the sleeve assembly and mounted on the electric heating assembly.

[0020] Beneficial effects

[0021] This application provides an irradiation device that applies a forced circulation driving force to the fluid in the sleeve assembly through a circulation driving component. Under the action of the forced circulation driving force of the circulation driving component, the fluid in the sleeve assembly flows downward from the inner flow channel, turns back at the bottom of the inner sleeve and enters the outer flow channel, flows upward along the outer flow channel, passes through the interlayer hole flow channel of the interlayer tube section and the opening on the guide pipe, and returns to the inner flow channel for continuous circulation. The circulating fluid can both cool the irradiated sample and, when used in conjunction with an electric heating component, can also heat the irradiated sample, thereby achieving different test temperature requirements from room temperature to high temperature for irradiated samples of different materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall irradiation device according to an embodiment of this application;

[0023] Figure 2 This is an overall cross-sectional view of the irradiation device according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the sleeve assembly according to an embodiment of this application;

[0025] Figure 4 This is a first-view schematic diagram of the outer tube portion according to an embodiment of this application;

[0026] Figure 5 This is a second-view schematic diagram of the outer tube portion according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the inner sleeve in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of a sandwiched pipe section according to an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of a loop drive component according to an embodiment of this application;

[0030] Figure 9 This is a schematic diagram of a circulation drive assembly without the support pipe section and the guide pipe according to an embodiment of this application.

[0031] Figure 10 This is a schematic diagram of an electric heating assembly according to an embodiment of this application;

[0032] Figure 11 This is a schematic diagram of the sample chamber assembly according to an embodiment of this application;

[0033] Figure 12 This is a schematic diagram of a sealed junction box assembly according to an embodiment of this application.

[0034] The reference numerals in the attached figures are as follows:

[0035] 1. Sleeve assembly; 11. Outer sleeve; 12. Inner sleeve; 13. Diverter pipe;

[0036] 1101. Outer tube body; 1102. Lower flange of outer sleeve; 1103. Upper flange of outer sleeve; 1104. Connecting pipe seat; 1105. First tube body; 1106. Second tube body; 1107. Thermocouple mounting seat of outer tube body; 1108. Thermocouple guide tube of outer tube body;

[0037] 1201. Inner tube body; 1202. Lower flange of inner sleeve; 1203. Upper flange of inner sleeve; 1204. Jacketed pipe section; 1205. Jacketed flow channel; 1206. Third tube body;

[0038] 2. Circulation drive assembly; 21. Support pipe section; 22. Guide pipe; 23. Drive mechanism;

[0039] 2301. Drive shaft; 2302. Non-contact magnetic coupling; 2303. Drive component; 2304. Impeller; 2305. Fan cover;

[0040] 3. Electric heating assembly; 301. Lifting ring; 302. Central tube; 303. Outer winding tube; 304. Inner winding tube; 305. Electric heating wire; 306. First connecting plate; 307. Second connecting plate; 308. Third connecting plate;

[0041] 4. Sample chamber assembly; 401. Outer chamber tube; 402. Inner chamber tube; 403. Guide tube; 404. Base plate; 405. Cover plate; 406. Sample chamber heating wire;

[0042] 5. Sealed junction box assembly; 501. Box body; 502. Extension connecting pipe; 503. Terminal block; 504. Terminal post; 505. Thermocouple sheath tube for box body; 506. Sensor sealing connector. Detailed Implementation

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0044] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0047] See also Figures 1 to 12 As shown, according to an embodiment of this application, an irradiation device is provided, including a sleeve assembly 1, a circulation drive assembly 2, and an electric heating assembly 3;

[0048] The casing assembly 1 has an inner flow channel and an outer flow channel; the inner flow channel and the outer flow channel are filled with fluid.

[0049] The circulation drive assembly 2 includes a support pipe section 21, a guide pipe 22, and a drive mechanism 23. The support pipe section 21 is fitted on the outside of the guide pipe 22. The drive mechanism 23 is located at one end of the support pipe section 21, and the other end of the support pipe section 21 is located at the open end of the sleeve assembly 1.

[0050] The electric heating component 3 is installed inside the sleeve assembly 1;

[0051] The circulation drive assembly 2 is used to apply a forced circulation drive force to make the fluid circulate between the inner and outer channels to set different test temperatures.

[0052] The circulation drive component 2 applies a forced circulation drive force to the fluid in the sleeve assembly 1. Under the action of the forced circulation drive force of the circulation drive component 2, the fluid in the sleeve assembly 1 flows downward from the inner flow channel, turns back at the bottom of the inner sleeve 12 and enters the outer flow channel. It flows upward along the outer flow channel, passes through the interlayer hole flow channel 1205 of the interlayer pipe section 1204 and the opening on the guide pipe 22 and returns to the inner flow channel for continuous circulation. The circulating fluid can cool the irradiated sample, and when used in conjunction with the electric heating component 3, it can also heat the irradiated sample, thereby achieving different test temperature requirements from room temperature to high temperature for irradiated samples of different materials.

[0053] The irradiation device employs a built-in high-power electric heater assembly 3 and a circulation drive assembly 2 to achieve internal gas circulation, enabling the testing temperature required for different irradiated samples and creating a universal irradiation device suitable for various samples. The irradiation device can be reused multiple times, improving the agility of irradiation experiments and reducing testing costs.

[0054] In this embodiment, the fluid refers to gas.

[0055] Among them, the closed end of the sleeve assembly 1 is located in the active region of the core and has a wall thickness reduction section of a certain length, which reduces the shielding effect on the neutron field by reducing the wall thickness.

[0056] The support pipe section 21 is provided with connecting flanges at both ends. One connecting flange is used to support the drive mechanism 23, and the other connecting flange is used to connect to the open end of the sleeve assembly 1.

[0057] Specifically, the side wall opening of the support pipe section 21 is connected to the fourth pipe body. When the pressure in the circulating flow channel formed by the inner and outer flow channels is too high, the pressure can be relieved through the fourth pipe body to avoid danger caused by excessive pressure in the irradiation device.

[0058] The irradiation device also includes a sample chamber assembly 4, which is located inside the sleeve assembly 1 and is mounted on the electric heating assembly 3.

[0059] The electric heating assembly 3 includes a lifting end and a connecting end. The sample chamber assembly 4 is mounted on the electric heating assembly 3, meaning that the sample chamber assembly 4 is installed at the connecting end of the electric heating assembly 3. During installation, the entire assembly consisting of the electric heating assembly 3 and the sample chamber assembly 4 is lifted into the sleeve assembly 1 through the open end of the sleeve assembly 1 using the lifting end of the electric heating assembly 3. This facilitates the installation and disassembly of the electric heating assembly 3 and the sample chamber assembly 4, makes it easy to change irradiation samples of different materials, and also facilitates the entry and exit of the sample chamber assembly 4 into and out of the sleeve assembly 1.

[0060] Specifically, the sample chamber assembly 4 includes a chamber tube assembly and a guide tube 403. The guide tube 403 is provided inside the chamber tube assembly, and one end of the guide tube 403 extends to the outside of the chamber tube assembly. The chamber tube assembly includes an annular space, which is filled with irradiated samples. The sample chamber assembly 4 is located on one side of the closed end of the sleeve assembly 1, that is, it is located in the active zone of the stack during the test.

[0061] More specifically, the storage unit includes an outer storage unit 401, an inner storage unit 402, a cover plate 405, and a base plate 404. The inner storage unit 402 is disposed inside the outer storage unit 401, and the outer storage unit 401 and the inner storage unit 402 are of equal length. One end of the outer storage unit 401 and the inner storage unit 402 is sealed by the cover plate 405, and the other end of the outer storage unit 401 and the inner storage unit 402 is sealed by the base plate 404, so that a sealed space is formed between the outer storage unit 401 and the inner storage unit 402. A sample chamber electric heating wire 406 is wound around the outer circumference of the inner storage unit 402 for heating the irradiated sample in the annular space to achieve local temperature rise by auxiliary electric heating.

[0062] More specifically, in order to facilitate the rapid transfer of heat generated by the sample chamber heating wire 406 to the irradiated sample, the inner chamber tube 402 is covered with sieve holes.

[0063] Specifically, in order to facilitate the measurement of temperature and humidity of the irradiated sample, an internal temperature sensor and an internal humidity sensor are arranged in the annular space. The leads of the internal temperature sensor and the internal humidity sensor, as well as the sample chamber electric heating wire 406 cable, all pass through the electric heating assembly 3.

[0064] The sleeve assembly 1 includes an outer sleeve 11, an inner sleeve 12, and a diversion pipe 13. The inner sleeve 12 and the diversion pipe 13 are sequentially disposed inside the outer sleeve 11. An internal first flow channel is formed inside the diversion pipe 13. An interval space is provided between the diversion pipe 13 and the inner sleeve 12 to form an external first flow channel. The open end of the inner sleeve 12 extends at least partially to the outside of the outer sleeve 11.

[0065] Among them, the outer sleeve 11 and the inner sleeve 12 are both open at one end and closed at the other end, while the diverter 13 is an open structure at both ends. The closed ends of the inner sleeve 12 and the outer sleeve 11 are both equipped with semi-circular end caps. For the semi-circular end cap transition of the closed end of the inner sleeve 12, the fluid turns back along the semi-circular end cap at the closed end and enters the outer flow channel, avoiding the phenomenon of stress concentration.

[0066] The gap between the outer sleeve 11 and the inner sleeve 12 is a closed static area; the inner sleeve 12 is used to provide the internal gas environment of the irradiation device and is the sealed enclosure boundary of the irradiation device; the inside of the diversion pipe 13 forms the internal first flow channel, that is, the diversion pipe 13 is used to separate the internal gas circulation channel of the irradiation device.

[0067] The outer sleeve 11 includes an outer tube body 1101 and a connector seat 1104. The connector seat 1104 is disposed on the outer peripheral surface of the outer tube body 1101. Two connector ports are provided on the outer side of the connector seat 1104. One connector port is connected to the second tube body 1106, and the other connector port is connected to the first tube body 1105. The first tube body 1105 extends through the connector seat 1104 into the heat insulation space formed by the outer sleeve 11 and the inner sleeve 12.

[0068] By setting up an insulation space, and using gas insulation or vacuum insulation in conjunction with the first tube 1105 and the second tube 1106, heat loss inside the irradiation device is reduced, which is beneficial for internal temperature control and achieves insulation of the irradiation device.

[0069] The connector 1104 is disposed on the outer circumferential surface of the outer tube 1101. In other words, in this embodiment, the connector 1104 is welded to the outer circumferential surface of the outer tube 1101 so that the two are fixed together.

[0070] The connector 1104 is a hollow structure, providing a bending space for the first tube 1105, so that the first tube 1105 can be bent from the horizontal direction to the vertical direction and inserted into the heat insulation space formed by the outer sleeve 11 and the inner sleeve 12, and extend to the active area at the bottom of the irradiation device.

[0071] The outer tube body 1101 includes a lower flange 1102 and an upper flange 1103. The upper flange 1103 and lower flange 1102 are respectively installed on the outer tube, with the end face of the upper flange 1103 flush with the end face of the outer tube body 1101. The wall of the outer tube body 1101 between the upper flange 1103 and the lower flange 1102 is thickened to improve installation support strength. The upper flange 1103 is used to support the inner sleeve 12, and the lower flange 1102 is used for the installation and fixation of the entire irradiation device. A pipe fitting 1104 is located at the thickened section of the pipe wall between the upper flange 1103 and the lower flange 1102.

[0072] The outer tube 1101 also includes an outer tube thermocouple mounting base 1107 and an outer tube thermocouple guide tube 1108. The outer tube thermocouple mounting base 1107 is arranged at the thickened section of the outer tube wall between the upper flange 1103 and the lower flange 1102 of the outer tube. One end of the outer tube thermocouple guide tube 1108 passes through the outer tube thermocouple mounting base 1107 and extends into the heat insulation space formed by the outer tube 1101 and the inner tube 1201. The thermocouple in the heat insulation space can be inserted into the required temperature measurement point through the outer tube thermocouple guide tube 1108 to monitor the internal temperature of the irradiation device.

[0073] Specifically, the outer tube thermocouple insertion socket 1107 is a hollow structure and is welded to the outer tube 1101. In order to facilitate the insertion of the outer tube thermocouple guide tube 1108 into the insulation space, the top surface of the outer tube thermocouple insertion socket 1107 is a slope, which slopes downward from the side closer to the outer tube 1101 to the side farther away from the outer tube 1101. An insertion hole is processed on the top surface. The outer tube thermocouple guide tube 1108 is inserted downward into the outer tube thermocouple insertion socket 1107 through the insertion hole and is bent in the hollow structure to be introduced into the insulation space.

[0074] The inner sleeve 12 includes an inner tube body 1201 and a sandwich tube section 1204. The top of the open end of the inner tube body 1201 is connected to the sandwich tube section 1204, and the wall thickness of the inner tube body 1201 is less than the wall thickness of the sandwich tube section 1204.

[0075] The arrangement of the interlayer pipe section 1204 serves two purposes: firstly, it allows fluid to circulate inside the irradiation device, and secondly, it is used to snap onto the electric heating assembly 3.

[0076] The inner end of the sandwich tube section 1204 is machined with a step, and the stepped end of the sandwich tube section 1204 is connected to the inner tube body 1201. The electric heating component 3 is snapped onto the sandwich tube section 1204 by setting the step.

[0077] Among them, the outer end of the interlayer pipe section 1204, which is far away from the step, is provided with an inner sleeve flange 1203 for receiving the circulation drive component 2.

[0078] The inner tube body 1201 is provided with an inner sleeve lower flange 1202 near the open end, which is used to connect with the outer sleeve upper flange 1103 of the outer tube body 1101 to install the inner sleeve 12 on the outer sleeve 11.

[0079] The inner tube body 1201 also includes an inner tube body thermocouple insertion seat and an inner tube body thermocouple guide tube. The inner tube body thermocouple insertion seat is arranged at the open end of the inner tube body 1201 and the thickened section of the inner tube body lower flange 1102. One end of the inner tube body thermocouple guide tube passes through the inner tube body thermocouple insertion seat and extends to the outer flow channel. The thermocouple in the outer flow channel can be inserted to the required temperature measurement point through the inner tube body thermocouple guide tube for monitoring the internal temperature of the irradiation device.

[0080] Specifically, the inner tube thermocouple tube holder is a hollow structure and is welded to the inner tube 1201. In order to facilitate the insertion of the inner tube thermocouple guide tube into the outer flow channel, the top surface of the inner tube thermocouple tube holder is a slope, which slopes downward from the side closer to the inner tube 1201 to the side farther away from the inner tube 1201. An insertion hole is machined on the top surface. The inner tube thermocouple guide tube is inserted downward into the inner tube thermocouple tube holder through the insertion hole and is bent in the hollow structure to be introduced into the outer flow channel.

[0081] Multiple interlayer flow channels 1205 are machined along the axial direction on the pipe wall of the interlayer pipe section 1204, and the interlayer flow channels 1205 are connected to the external first flow channel.

[0082] The arrangement of the interlayer perforated flow channel 1205 is used for the flow of fluid in the external flow channel inside the irradiation device.

[0083] The wall of the interlayer pipe section 1204 is radially machined with through holes that communicate with the third pipe body 1206 so that fluid can pass into the inner sleeve 12.

[0084] The through holes and the interlayer hole flow channels 1205 need to be staggered to prevent fluid from entering the outer flow channel and thus preventing the forced driving force from being applied to the fluid through the circulation drive component 2.

[0085] The third tube 1206 is connected to the gas source and is used to introduce gas into the inner flow channel through the third tube 1206 and the through hole.

[0086] One end of the guide tube 22 is connected to the drive mechanism 23, and the other end extends into the sleeve assembly 1 and is sealed to the sleeve assembly 1. Multiple openings are provided on the guide tube 22 along the circumferential direction. An internal second flow channel is formed inside the guide tube 22, and an external second flow channel is formed between the guide tube 22 and the support tube section 21.

[0087] The arrangement of the guide pipe 22 enables the interlayer hole channel 1205, the external second channel, and the external first channel to form a complete external channel, and the internal second channel and the internal first channel to form a complete internal channel. The internal first channel and the external second channel are connected, and the internal second channel and the external first channel are connected to form a gas circulation channel. The gas introduced into the internal channel from the third pipe 1206 is driven by the forced circulation driving force of the circulation drive component 2. It flows downward from the internal first channel formed by the diversion pipe 13, flows out from the bottom of the diversion pipe 13, turns back at the semi-circular end cap at the bottom of the inner sleeve 12, and flows upward along the external first channel, the interlayer hole channel 1205, and the external second channel. It then flows back into the internal first channel through the opening on the guide pipe 22, realizing gas circulation.

[0088] The drive mechanism 23 includes a shroud 2305, one end of which is connected to the support pipe section 21. A drive component 2303 is mounted on the other end of the shroud 2305. A drive shaft 2301 is disposed inside the shroud 2305. The output shaft of the drive component 2303 extends through the shroud 2305 into the shroud 2305 and is connected to one end of the drive shaft 2301. The other end of the drive shaft 2301 extends out of the shroud 2305 and has an impeller 2304 at its end. The drive component 2303 drives the drive shaft 2301 to rotate, which in turn drives the impeller 2304 located at the end of the drive shaft 2301 in the guide pipe 22 to rotate, providing a forced driving force to drive the gas flow in the inner flow channel.

[0089] The hood 230 includes an inner hood and an outer hood, with staggered ventilation holes on the inner and outer hoods to allow for natural airflow, thereby reducing the temperature of the drive shaft 2301 and minimizing heat transfer. The inner hood is located inside the outer hood, with one end welded to the lower plate. The other end of the inner hood is lower than the other end of the outer hood, forming an installation space for the non-contact magnetic coupling 2302. The other end of the outer hood is fitted with an upper plate, and the drive component 2303 is mounted on the upper plate. The output shaft of the drive component 2303 passes through the upper plate and is connected to the drive shaft 2301 via the non-contact magnetic coupling 2302. The non-contact magnetic coupling 2302 can effectively reduce vibration.

[0090] The non-contact magnetic coupling 2302 is equipped with a coupling sealing cover on the outside to achieve reliable sealing; a temperature sensor is arranged inside the connecting shaft sealing cover to realize real-time monitoring of the temperature of the non-contact magnetic coupling 2302, and to detect whether the coupling sealing cover is leaking through temperature monitoring.

[0091] The drive shaft 2301 has a hollow structure with solid ends and a hollow middle section. This design allows the drive shaft 2301 to be lightweight without compromising its strength. Furthermore, the hollow design minimizes the diffusion of high-temperature gases. The hollow design of the drive shaft 2301 also reduces heat conduction by lowering its cross-sectional area.

[0092] Specifically, a heat-insulating bushing is fitted into the hollow part of the drive shaft 2301, and a small gap is maintained between the drive shaft 2301 and the heat-insulating bushing to effectively reduce the flow of high-temperature gas; this minimizes the conduction of high temperature inside the irradiation device to the non-contact magnetic coupling 2302 and the drive component 2303, ensuring the normal operation of the non-contact magnetic coupling 2302 and the drive component 2303.

[0093] The electric heating assembly 3 includes at least two layers of heating tubes and a central tube 302. The heating tubes are fitted onto the central tube 302, and both ends of the central tube 302 extend beyond the heating tubes. The electric heating assembly 3 occupies most of the space of the sleeve assembly 1. A high-power electric heating assembly 3 is selected to rapidly and effectively heat the entire irradiation device in a short time.

[0094] The heating tube assembly consists of two layers: an outer winding tube 303 with an electric heating wire 305 wound around its outer circumference and an inner winding tube 304 with an electric heating wire 305 wound around its outer circumference. The inner winding tube 304 is located inside the outer winding tube 303. One end of the outer winding tube 303 is bolted to a second connecting plate 307, which secures the electric heating component 3 to the step of the interlayer tube section 1204. A first connecting plate 306 is installed at the other end of the inner winding tube 304, and a third connecting plate 308 is installed at the other end of the outer winding tube 303. The first connecting plate 306 is located inside the outer winding tube 303, and a height difference is formed between it and the third connecting plate 308, facilitating the disassembly and installation of the outer winding tube 303 and the maintenance of the inner winding tube 304 and the outer winding tube 303.

[0095] Specifically, the first connecting plate 306, the second connecting plate 307, and the third connecting plate 308 are all provided with perforations to allow for the flow of high-temperature gas.

[0096] Specifically, the first connecting plate 306, the second connecting plate 307, and the third connecting plate 308 are all machined with center holes for installing the center tube 302. The center tube 302 is welded to the second connecting plate 307. The diameter of the center holes on the first connecting plate 306 and the third connecting plate 308 is larger than the outer diameter of the center tube 302 to eliminate the thermal expansion effect caused by heating of the inner winding tube 304 and the outer winding tube 303.

[0097] The bottom end of the central tube 302 extends through the third connecting plate 308 for installing the sample chamber assembly 4; the top end of the central tube 302 extends through the second connecting plate 307 and is equipped with a lifting ring 301 at the end, which enables the overall hoisting of the electric heating assembly 3 and the sample chamber assembly 4.

[0098] The irradiation device also includes a sealed junction box assembly 5, which includes an extension connecting pipe 502. A wire through hole is provided on the side wall of the interlayer pipe section 1204. The wire through hole is connected to the extension connecting pipe 502 to connect the sealed junction box assembly 5 to the sleeve assembly 1.

[0099] After the cable passes through the extension connecting pipe 502, it can be filled and sealed with thermal insulation material to minimize the diffusion of high-temperature gas from inside the irradiation device into the sealed junction box assembly 5, thereby reducing the temperature inside the sealed junction box assembly and minimizing the impact of high temperature on the sealing material. Multiple extension connecting pipes 502 can be installed to increase the number of cables that can be accommodated and improve structural stability.

[0100] The sealed junction box assembly 5 also includes a box body 501 and a terminal plate 503. The terminal plate 503 is provided at the open end of the box body 501. The terminal plate 503 is provided with multiple terminals 504 and multiple sensor sealing connectors 506. One end of the terminal 504 extends into the inner cavity of the box body 501. The terminal 504 is used to connect the cable of the electric heating component 3. An extension connecting pipe 502 is provided on the box body 501, and the extension connecting pipe 502 is arranged opposite to the terminal 504.

[0101] In the sensor sealing joint 506 structure, the temperature sensor inside the chamber, the humidity sensor inside the chamber, and the temperature sensor arranged inside the shaft sealing cover pass through the perforated sealing gasket, and the sealing gasket is tightened by a nut to achieve a sufficient sealing effect.

[0102] The box body 501 is provided with a box body thermocouple sheath 505, which is installed on the outer wall of the box body 501 and extends into the inside of the box body 501. The box body thermocouple sheath 505 is a thin tube structure with one end closed, and the closed end extends into the inside of the box body 501. A box body temperature sensor is installed inside the box body 501. The box body temperature sensor is inserted into the box body thermocouple sheath 505 through the open end of the box body thermocouple sheath 505. The temperature monitoring can indirectly reflect the gas leakage of the sealed junction box assembly.

[0103] The specific working process of the irradiation device is as follows:

[0104] The sample chamber assembly 4 is installed at the bottom of the central tube 302 of the electric heating assembly 3 and fixed on the central tube 302; the electric heating assembly 3 and the sample chamber assembly 4 are lifted by the lifting ring 301 on the electric heating assembly 3 and placed into the sleeve assembly 1 as a whole; then the circulation drive assembly 2 is installed.

[0105] The electric heating component 3 and the circulation drive component 2 are activated. Simultaneously, gas is introduced into the inner flow channel through the third tube 1206. Under the forced circulation driving force of the circulation drive component 2, the gas flows downwards from the inner first flow channel formed by the diversion tube 13, exits from the bottom of the diversion tube 13, and turns back at the semi-circular end cap at the bottom of the inner sleeve 12. It then flows upwards along the outer first flow channel, the interlayer hole flow channel 1205, and the outer second flow channel, before flowing back into the inner first flow channel through the opening on the guide tube 22, thus achieving gas circulation. This allows for internal gas circulation drive within the irradiation device, enabling the achievement of test temperatures required for different irradiated samples, forming a universal irradiation device for various irradiated samples. The irradiation device can be reused multiple times, improving the agility of material irradiation testing and reducing testing costs.

[0106] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0107] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. An irradiation device, characterized in that, include: A sleeve assembly (1) has an inner flow channel and an outer flow channel inside; the inner flow channel and the outer flow channel are filled with fluid; The circulation drive assembly (2) includes a support pipe section (21), a guide pipe (22), and a drive mechanism (23). The support pipe section (21) is fitted on the outside of the guide pipe (22). The drive mechanism (23) is located at one end of the support pipe section (21), and the other end of the support pipe section (21) is located at the open end of the sleeve assembly (1). An electric heating assembly (3) is disposed within the sleeve assembly (1); The circulation drive assembly (2) is used to apply a forced circulation drive force to make the fluid circulate between the inner flow channel and the outer flow channel to set different test temperatures; The sleeve assembly (1) includes an outer sleeve (11), an inner sleeve (12), and a diversion pipe (13). The inner sleeve (12) and the diversion pipe (13) are sequentially disposed inside the outer sleeve (11). An internal first flow channel is formed inside the diversion pipe (13). A gap space is provided between the diversion pipe (13) and the inner sleeve (12) to form an external first flow channel. The open end of the inner sleeve (12) extends at least partially to the outside of the outer sleeve (11). One end of the guide tube (22) is connected to the drive mechanism (23), and the other end extends into the sleeve assembly (1) and is sealed to the sleeve assembly (1). An opening is provided on the guide tube (22) along the circumferential direction. An internal second flow channel is formed inside the guide tube (22), and an external second flow channel is formed between the guide tube (22) and the support tube section (21).

2. The irradiation device according to claim 1, characterized in that, The outer sleeve (11) includes an outer tube body (1101) and a connector seat (1104). The connector seat (1104) is disposed on the outer peripheral surface of the outer tube body (1101). Two connector ports are provided on the outer side of the connector seat (1104). One of the connector ports is connected to the second tube body (1106), and the other connector port is connected to the first tube body (1105). The first tube body (1105) extends through the connector seat (1104) into the heat insulation space formed by the outer sleeve (11) and the inner sleeve (12).

3. The irradiation device according to claim 1, characterized in that, The inner sleeve (12) includes an inner tube body (1201) and a sandwich tube section (1204). The top of the open end of the inner tube body (1201) is connected to the sandwich tube section (1204), and the wall thickness of the inner tube body (1201) is less than the wall thickness of the sandwich tube section (1204).

4. An irradiation device according to claim 3, characterized in that, The interlayer pipe section (1204) has multiple interlayer flow channels (1205) machined along the axial direction on the pipe wall, and the interlayer flow channels (1205) are connected to the external first flow channel.

5. An irradiation device according to claim 3, characterized in that, The wall of the interlayer pipe section (1204) is radially machined with through holes, which communicate with the third pipe body (1206) to allow fluid to pass into the inner sleeve (12).

6. An irradiation device according to claim 1, characterized in that, The drive mechanism (23) includes a shroud, one end of which is connected to the support pipe section (21), and the other end of which is equipped with a drive component (2303). A transmission shaft (2301) is provided inside the shroud. The output shaft of the drive component (2303) extends through the shroud into the shroud and is connected to one end of the transmission shaft (2301). The other end of the transmission shaft (2301) extends out of the shroud and is equipped with an impeller (2304) at its end.

7. An irradiation device according to claim 1, characterized in that, The electric heating assembly (3) includes at least two layers of heating tubes and a central tube (302). The heating tubes are mounted on the central tube (302), and both ends of the central tube (302) extend beyond the heating tubes.

8. An irradiation device according to claim 1, characterized in that, The irradiation device also includes a sample chamber assembly (4), which is located inside the sleeve assembly (1) and mounted on the electric heating assembly (3).

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