Irradiation device

Abstract

The invention provides an irradiation device, which comprises a sleeve assembly, a circulation driving assembly and an electric heating assembly, and is characterized in that an inner flow channel and an outer flow channel are formed in the sleeve assembly; the inner flow channel and the outer flow channel are filled with fluid. The circulation driving assembly comprises a supporting pipe section, a flow guide pipe and a driving mechanism, the flow guide pipe is sleeved with the supporting pipe section, the driving mechanism is arranged at one end of the supporting pipe section, and the other end of the supporting pipe section is arranged at the open end of the sleeve assembly; the electric heating assembly is arranged in the sleeve assembly; the circulation driving assembly is used for applying forced circulation driving force, so that the fluid circulates between the inner flow channel and the outer flow channel, and different test temperatures are set; the internal gas circulation driving of the irradiation device can be realized, the test temperatures required by different irradiation samples are realized, and the universal irradiation device for different irradiation samples is formed.

Description

Technical Field

[0001] The present application belongs to the technical field of gas environment irradiation testing, and specifically relates to an irradiation device. Background Art

[0002] Material irradiation tests can be divided into static container irradiation tests, instrumented irradiation tests and loop irradiation tests according to different technical routes.

[0003] Among them, the static container irradiation test is a technical solution that seals the test object in a closed container for irradiation testing. This technical solution is relatively simple, easy to operate, and has high test economy; the instrumented irradiation test is a technical solution that can monitor and control irradiation parameters online, and has high control accuracy for parameters such as the test temperature; the loop irradiation test can accurately construct the actual service environment of the test object, and the heat of the test piece is extracted by the loop coolant. The loop irradiation test is mainly for fuel, but some materials have also been subjected to loop irradiation tests, such as the in-pile water chemical corrosion test for structural materials.

[0004] However, in terms of material irradiation testing in a gas environment, the current technology still has some limitations, which are mainly reflected in: for low-temperature testing of certain materials with high calorific value, since the current irradiation test system is mainly based on air gap heat conduction, the air gap heat conduction solution is difficult to reach the required test temperature; for high-temperature testing of certain non-metallic materials, due to their own low calorific value, it is also difficult to reach the required test temperature without the support of auxiliary heating means. Summary of the invention

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

[0006] In order to solve the above problems, the present application provides an irradiation device, comprising:

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

[0008] A circulation drive assembly, the circulation drive assembly comprising a support pipe segment, a guide pipe and a drive mechanism, the support pipe segment is sleeved on the outside of the guide pipe, the drive mechanism is arranged at one end of the support pipe segment, and the other end of the support pipe segment is arranged on the open end of the sleeve assembly;

[0009] An electric heating component, wherein the electric heating component is disposed in the sleeve component;

[0010] The circulation drive component 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.

[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 arranged in the outer sleeve, an internal first flow channel is formed inside the diverter tube, and a spacing 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 at least partially extends to the outside of the outer sleeve.

[0012] Optionally, the outer sleeve includes an outer tube body and a connecting pipe seat, the connecting pipe seat is arranged on the outer circumferential surface of the outer tube body, and two connecting pipe ports are arranged on the outer side surface of the connecting pipe seat, one of the connecting pipe ports is connected to the second tube body, and the other connecting pipe port is connected to the first tube body, and the first tube body extends through the connecting pipe seat to the insulating space formed by the outer sleeve and the inner sleeve.

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

[0014] Optionally, a plurality of interlayer hole flow channels are processed axially on the tube wall of the interlayer tube section, and the interlayer hole flow channels are connected to the external first flow channel.

[0015] Optionally, a through hole is processed radially on the tube wall of the sandwich tube section, which is connected to the third tube body so that the fluid can pass into the inner sleeve.

[0016] Optionally, one end of the guide tube is connected to the driving mechanism, and the other end extends into the sleeve assembly and is sealed with the sleeve assembly, and 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 pipe section.

[0017] Optionally, the driving mechanism includes a wind hood, one end of the wind hood is connected to the supporting pipe section, a driving member is installed on the other end of the wind hood, a transmission shaft is arranged inside the wind hood, an output shaft of the driving member passes through the wind hood and extends into the wind hood and is connected to one end of the transmission shaft, the other end of the transmission shaft passes through the wind hood and an impeller is arranged at the end.

[0018] Optionally, the electric heating assembly includes at least two layers of heating tube groups and a central tube, the heating tube group is sleeved on the central tube, and both ends of the central tube extend outside the heating tube group.

[0019] Optionally, the irradiation device further comprises a sample chamber assembly, wherein the sample chamber assembly is located in the sleeve assembly and is mounted on the electric heating assembly.

[0020] Beneficial Effects

[0021] An embodiment of the present application provides an irradiation device, which 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, returns at the bottom of the inner sleeve to enter the outer flow channel, flows upward along the outer flow channel, passes through the interlayer hole flow channel of the interlayer pipe section and the opening on the guide pipe, and returns to the inner flow channel for continuous circulation. The circulating fluid can cool the irradiated sample and, in conjunction with the 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0024] Figure 3 A schematic diagram of a sleeve assembly according to an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of the outer sleeve portion from a first perspective of an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the outer sleeve portion from a second viewing angle of an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of an inner sleeve according to an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of a sandwich pipe section according to an embodiment of the present application;

[0029] Figure 8 A schematic diagram of a circulating drive assembly according to an embodiment of the present application;

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

[0031] Fig.10 A schematic diagram of an electric heating assembly according to an embodiment of the present application;

[0032] Fig.11 A schematic diagram of a sample chamber assembly according to an embodiment of the present application;

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

[0034] The reference numerals are as follows:

[0035] 1. casing assembly; 11. outer casing; 12. inner casing; 13. shunt pipe;

[0036] 1101, outer tube body; 1102, outer tube lower flange; 1103, outer tube upper flange; 1104, connecting pipe seat; 1105, first tube body; 1106, second tube body; 1107, outer tube body thermocouple tube seat; 1108, outer tube body thermocouple guide tube;

[0037] 1201, inner tube body; 1202, inner casing lower flange; 1203, inner casing upper flange; 1204, sandwich tube section; 1205, sandwich hole flow channel; 1206, third tube body;

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

[0039] 2301, transmission shaft; 2302, non-contact magnetic coupling; 2303, driving member; 2304, impeller; 2305, wind shield;

[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. bottom plate; 405. cover plate; 406. electric heating wire of sample chamber;

[0042] 5. Sealed junction box assembly; 501. Box body; 502. Extended connecting pipe; 503. Terminal plate; 504. Terminal post; 505. Box body thermocouple sheath tube; 506. Sensor sealing joint. DETAILED DESCRIPTION

[0043] In the description of the present 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 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 the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The preferred embodiments of the present invention 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 invention, and are not used to limit the present invention.

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

[0048] An inner flow channel and an outer flow channel are formed inside the sleeve assembly 1; 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 guide pipe 22 is sleeved with the support pipe section 21 outside. The drive mechanism 23 is arranged at one end of the support pipe section 21, and the other end of the support pipe section 21 is arranged on the open end of the sleeve assembly 1.

[0050] The electric heating component 3 is arranged in the sleeve component 1;

[0051] 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.

[0052] A forced circulation driving force is applied to the fluid in the sleeve assembly 1 through the circulation driving component 2. Under the action of the forced circulation driving force of the circulation driving component 2, the fluid in the sleeve assembly 1 flows downward from the inner flow channel, returns at the bottom of the inner sleeve 12 to enter the outer flow channel, flows upward along the outer flow channel, passes through the interlayer hole flow channel of the interlayer pipe section 1204 and the opening on the guide tube 22, and returns to the inner flow channel 12 for continuous circulation. The circulating fluid can not only cool the irradiated sample, but also heat the irradiated sample in combination with the electric heating component 3, thereby achieving different test temperature requirements from room temperature to high temperature for irradiated samples of different materials.

[0053] The built-in high-power electric heater component 3 and the circulation drive component 2 are used to realize circulation, realize the internal gas circulation drive of the irradiation device, realize the test temperature required by different irradiation samples, and form a universal irradiation device for different irradiation samples. The irradiation device can be reused many times, which improves the agility of the irradiation test and reduces the test cost.

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

[0055] The closed end of the sleeve assembly 1 is located in the core active area and is provided with a wall thinning section of a certain length, so as to reduce the shielding effect on the neutron field by thinning the wall.

[0056] Wherein, connecting flanges are provided at both ends of the supporting pipe section 21 , wherein the connecting flange at one end is used to receive the driving mechanism 23 , and the connecting flange at the other end is used to connect with the open end of the sleeve assembly 1 .

[0057] Specifically, the opening on the side wall of the support pipe section 21 is connected to the fourth pipe body. When the pressure in the circulation channel formed by the inner channel and the outer channel 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 further includes a sample chamber assembly 4 , which is located in the sleeve assembly 1 and installed on the electric heating assembly 3 .

[0059] The electric heating component 3 includes a hoisting end and a connecting end, and the sample chamber component 4 is installed on the electric heating component 3, that is, the sample chamber component 4 is installed on the connecting end of the electric heating component 3. During installation, the electric heating component 3 and the sample chamber component 4 are hoisted into the casing component 1 through the open end of the casing component 1 by hoisting the hoisting end of the electric heating component 3. This facilitates the installation and disassembly of the electric heating component 3 and the sample chamber component 4, facilitates the replacement of irradiated samples of different materials, and also facilitates the sample chamber component 4 to enter and exit the casing component 1.

[0060] Specifically, the sample bin assembly 4 includes a bin tube assembly and a guide tube 403. The guide tube 403 is arranged in the bin tube assembly. One end of the guide tube 403 extends to the outside of the bin tube assembly. The bin tube assembly includes an annular space filled with irradiated samples. The sample bin assembly 4 is located on one side of the closed end of the sleeve assembly 1, that is, it is located in the active area of ​​the pile during the test.

[0061] More specifically, the warehouse tube assembly includes an outer warehouse tube 401, an inner warehouse tube 402, a cover plate 405 and a bottom plate 404. The inner warehouse tube 402 is arranged in the outer warehouse tube 401, and the outer warehouse tube 401 and the inner warehouse tube 402 are arranged with the same length. One end of the outer warehouse tube 401 and the inner warehouse tube 402 are packaged by the cover plate 405, and the other end of the outer warehouse tube 401 and the inner warehouse tube 402 are packaged by the bottom plate 404, so that a sealed space is formed between the outer warehouse tube 401 and the inner warehouse tube 402; a sample warehouse electric heating wire 406 is wound around the outer peripheral surface of the inner warehouse tube 402, which is used to heat the irradiated sample in the annular space to achieve local heating by auxiliary electric heating.

[0062] More specifically, in order to facilitate the rapid transfer of heat generated by the sample chamber electric 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 the temperature and humidity of the irradiated sample, an in-bin temperature sensor and an in-bin humidity sensor are arranged in the annular space, and the leads of the in-bin temperature sensor and the in-bin humidity sensor and the sample bin electric heating wire 406 cable all pass through the electric heating group component 3.

[0064] The sleeve assembly 1 includes an outer sleeve 11, an inner sleeve 12 and a shunt pipe 13. The inner sleeve 12 and the shunt pipe 13 are arranged in the outer sleeve 11 in sequence. An internal first flow channel is formed inside the shunt pipe 13. A spacing space is provided between the shunt pipe 13 and the inner sleeve 12 to form an external first flow channel; the open end of the inner sleeve 12 at least partially extends 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 tube 13 is an open-ended structure at both ends. The closed ends of the inner sleeve 12 and the outer sleeve 11 are both provided with semicircular heads. For the transition of the semicircular head at the closed end of the inner sleeve 12, the fluid returns along the semicircular head at the closed end to enter 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 an internal gas environment for the irradiation device and is a sealed containment boundary of the irradiation device; an internal first flow channel is formed inside the shunt tube 13, that is, the shunt tube 13 is used to separate the internal gas circulation flow channel of the irradiation device.

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

[0068] By setting up the heat-insulating space, in conjunction with the first tube body 1105 and the second tube body 1106, heat preservation is performed by passing gas insulation or vacuum insulation, thereby reducing heat loss inside the irradiation device, facilitating internal temperature control, and achieving heat insulation of the irradiation device.

[0069] The connecting socket 1104 is disposed on the outer peripheral surface of the outer tube body 1101 , that is, in this embodiment, the connecting socket 1104 is welded to the outer peripheral surface of the outer tube body 1101 so that the two are fixed as one.

[0070] Among them, the connecting pipe seat 1104 is a hollow structure, which provides a bending space for the first tube body 1105, so that the first tube body 1105 can be bent from the horizontal direction to the vertical direction, and inserted into the insulating 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 further includes an outer sleeve lower flange 1102 and an outer sleeve upper flange 1103. The outer tube 1101 is provided with an outer sleeve upper flange 1103 and an outer sleeve lower flange 1102 respectively, and the end face of the outer sleeve upper flange 1103 is flush with the end face of the outer tube body 1101. The outer tube body 1101 wall between the outer sleeve upper flange 1103 and the outer sleeve lower flange 1102 is thickened to improve the installation support strength. The outer sleeve upper flange 1103 is used to receive the inner sleeve 12, and the outer sleeve lower flange 1102 is used for installation and fixation of the entire irradiation device. The pipe seat 1104 is provided at the thickened section of the pipe wall between the outer sleeve upper flange 1103 and the outer sleeve lower flange 1102.

[0072] Among them, the outer tube body 11 also includes an outer tube body thermocouple pipe seat 1107 and an outer tube body thermocouple guide tube 1108. The outer tube body thermocouple pipe seat 1107 is arranged at the thickened section of the tube wall between the outer tube body upper flange 1103 and the outer tube body lower flange 1102. One end of the outer tube body thermocouple guide tube 1108 passes through the outer tube body thermocouple pipe seat 1107 and extends into the insulating space formed by the outer tube body 11 and the inner tube body 12. The thermocouple in the insulating space can be inserted into the required temperature measuring point through the outer tube body thermocouple guide tube 1108 to monitor the internal temperature of the irradiation device.

[0073] Specifically, the outer tube body thermocouple pipe seat 1107 is a hollow structure and is welded to the outer tube body 1101; in order to facilitate the insertion of the outer tube body thermocouple guide tube 1108 into the insulation space, the top surface of the outer tube body thermocouple pipe seat 1107 is an inclined surface, which tilts downward from the side close to the outer tube body 1101 to the side away from the outer tube body 1101, and a socket is processed on the top surface. The outer tube body thermocouple guide tube 1108 is inserted downward into the outer tube body thermocouple pipe seat 1107 through the socket, 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 an interlayer tube section 1204 . The top of the open end of the inner tube body 1201 is connected to the interlayer tube section 1204 , and the wall thickness of the inner tube body 1201 is smaller than the wall thickness of the interlayer tube section 1204 .

[0075] The arrangement of the sandwich pipe section 1204 is used, on the one hand, for the fluid to circulate inside the irradiation device, and on the other hand, for clamping the electrolytic heating component 3.

[0076] Among them, a step is processed at one end of the inner hole of the interlayer pipe section 1204, and the end of the interlayer pipe section 1204 with the step is connected to the inner pipe body 1201. Through the setting of the step, the electric heating component 3 is clamped on the interlayer pipe section 1204.

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

[0078] Among them, an inner sleeve lower flange 1202 is provided on one side of the inner tube body 1201 close to 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] Among them, the inner tube body 12 also includes an inner tube body thermocouple pipe seat and an inner tube body thermocouple guide tube. The inner tube body thermocouple pipe seat is arranged at the thickened section of the pipe wall between the open end of the inner tube body and the lower flange 1102 of the inner tube body. One end of the inner tube body thermocouple guide tube passes through the inner tube body thermocouple pipe seat and extends to the outer flow channel. The thermocouple in the outer flow channel can be inserted into the required temperature measuring point through the inner tube body thermocouple guide tube for monitoring the internal temperature of the irradiation device.

[0080] Specifically, the inner tube body thermocouple tube seat is a hollow structure and is welded to the inner tube body 1201; in order to facilitate the insertion of the inner tube body thermocouple guide tube into the outer flow channel, the top surface of the inner tube body thermocouple tube seat is an inclined surface, which tilts downward from the side close to the inner tube body 1201 to the side away from the inner tube body 1201, and a socket is processed on the top surface. The inner tube body thermocouple guide tube is inserted downward into the inner tube body thermocouple tube seat through the socket, and is bent in the hollow structure to be introduced into the outer flow channel.

[0081] A plurality of interlayer hole flow channels 1205 are processed axially on the tube wall of the interlayer tube section 1204, and the interlayer hole flow channels 1205 are communicated with the external first flow channel.

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

[0083] A through hole is processed radially on the tube wall of the interlayer tube section 1204 , which is connected with the third tube body 1206 so that the fluid can flow into the inner sleeve 12 .

[0084] Among them, the through holes and the interlayer hole flow channels 1205 need to be staggered to prevent the fluid from entering the external flow channel and failing to exert a forced driving force on the fluid through the circulation drive component 2.

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

[0086] One end of the guide tube 22 is connected to the driving mechanism 23, and the other end extends into the sleeve assembly 1 and is sealed and connected to the sleeve assembly 1. A plurality of 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 pipe section 21.

[0087] Through the arrangement of the guide pipe 22, the interlayer hole flow channel 1205, the external second flow channel and the external first flow channel form a complete external flow channel, and the internal second flow channel and the internal first flow channel form a complete internal flow channel. The internal first flow channel is connected with the external second flow channel, and the internal second flow channel is connected with the external first flow channel to form a gas circulation flow channel; the gas introduced into the inner flow channel from the third tube body 1206 flows downward from the internal first flow channel formed by the diverter pipe 13 under the action of the forced circulation driving force of the circulation drive component 2, flows out from the bottom of the diverter pipe 13, turns back at the semicircular head at the bottom of the inner sleeve 12, flows upward along the external first flow channel, the interlayer hole flow channel 1206, and the external second flow channel, and flows back into the internal first flow channel through the opening on the guide pipe 22 to realize gas circulation.

[0088] The driving mechanism 23 includes a wind hood, one end of which is connected to the supporting pipe section 21, and a driving member 2303 is installed at the other end of the wind hood. A transmission shaft 2301 is arranged in the wind hood, and an output shaft of the driving member 2303 passes through the wind hood and extends into the wind hood, and is connected to one end of the transmission shaft 2301. The other end of the transmission shaft 2301 passes through the wind hood and is provided with an impeller 2304 at the end. The driving member 2303 drives the transmission shaft 2301 to rotate, and then drives the impeller 2304 located in the guide tube 22 at the end of the transmission shaft 2301 to rotate, providing a forced driving force to drive the gas flow in the inner flow channel.

[0089] Among them, the wind hood includes an inner ventilation hood and an outer ventilation hood, and the ventilation holes on the inner ventilation hood and the outer ventilation hood are arranged in a staggered manner to achieve natural air circulation, so as to reduce the temperature of the transmission shaft and reduce heat transfer; the inner ventilation hood is located inside the outer ventilation hood, and one end of it is welded to the lower plate body; the other end of the inner ventilation hood is lower than the other end of the outer ventilation hood, forming an installation space for the non-contact magnetic coupling 2302, and an upper plate body is set at the other end of the outer ventilation hood, and the driving member 2303 is set on the upper plate body, and the output shaft of the driving member 2303 passes through the upper plate body and is connected to the transmission shaft 2301 through the non-contact magnetic coupling, and the non-contact magnetic coupling 2302 can effectively reduce vibration.

[0090] Among them, a coupling sealing cover is set on the outside of the non-contact magnetic coupling 2302 to achieve reliable sealing; a temperature sensor is arranged in the sealing cover of the connecting shaft to realize real-time monitoring of the temperature of the non-contact magnetic coupling 2302, and whether the coupling sealing cover is leaking is detected through temperature monitoring.

[0091] The transmission shaft 2301 is a structure with two solid ends and a hollow middle part, which makes the transmission shaft 2301 lightweight without affecting the strength of the transmission shaft 2301 itself; at the same time, due to the hollow setting, the diffusion effect of high-temperature gas is reduced as much as possible. The transmission shaft 2301 is a hollow shaft, and the heat conduction area is reduced by reducing the cross section of the transmission shaft 2301, thereby reducing heat conduction.

[0092] Specifically, a heat-insulating shaft sleeve is mounted on the hollow part of the transmission shaft 2301, and a small gap is retained between the transmission shaft 2301 and the heat-insulating shaft sleeve, which can effectively reduce the flow of high-temperature gas; and minimize the high temperature inside the irradiation device from being transmitted to the non-contact magnetic coupling 2302 and the driving member 2303, thereby ensuring the normal operation of the non-contact magnetic coupling 2302 and the driving member 2303.

[0093] The electric heating assembly 3 includes at least two layers of heating tube groups and a central tube 302. The heating tube group is sleeved on the central tube 302, and both ends of the central tube 302 extend outside the heating tube group. The electric heating assembly 3 occupies most of the space of the sleeve assembly 1. At the same time, a high-power electric heating assembly 3 is selected, and the entire irradiation device is quickly and effectively heated in a short time through the electric heating assembly.

[0094] Among them, the heating tube group is composed of two layers, namely an outer winding tube 303 with a motor hot wire 305 wound on the outer circumference and an inner winding tube 304 with a motor hot wire 305 wound on the outer circumference, and the inner winding tube 304 is located inside the outer winding tube 303, one end of the outer winding tube 303 is connected to the second connecting plate 307 by bolts, and the electric heating component 3 is clamped on the step of the interlayer tube section 1204 by the second connecting plate 307, the other end of the inner winding tube 304 is installed with a first connecting plate 306, and the other end of the outer winding tube 303 is installed with a third connecting plate 308, and the first connecting plate 306 is located inside the outer winding tube 303 and forms a height difference with the third connecting plate 308, which is convenient for the disassembly and installation of the outer winding tube 303, and convenient for the repair and 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 hollows to achieve the circulation of high-temperature gas.

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

[0097] The bottom end of the central tube 302 passes through a third connecting plate 308 for installing the sample chamber assembly 4 ; the top end of the central tube 302 passes through a second connecting plate 307 and a hanging ring 301 is provided at the end, through which the electric heating assembly 3 and the sample chamber assembly 4 are hoisted as a whole.

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

[0099] After the cables pass through the extended connecting tube 502, the insulating material can be used to fill and seal it, so as to minimize the diffusion of the high-temperature gas inside the irradiation device into the sealed junction box assembly 5, reduce the temperature inside the sealed junction box assembly, and reduce the impact of high temperature on the sealing material. Multiple extended connecting tubes 502 can be provided to increase the number of cables that can be accommodated and improve the structural stability.

[0100] Among them, the sealed junction box assembly 5 also includes a box body 501 and a terminal plate 503. The open end of the box body 501 is provided with a terminal plate 503. The terminal plate 503 is provided with a plurality of terminal posts 504 and a plurality of sensor sealing joints 506. One end of the terminal post 504 extends to the inner cavity of the box body 501. The terminal post 504 is used to connect the cable of the electric heating component 3. An extended connecting tube 502 is provided on the box body 501, and the extended connecting tube 502 is arranged opposite to the terminal post 504.

[0101] In the sensor sealing joint 506 structure, the temperature sensor in the bin, the humidity sensor in the bin, and the temperature sensor arranged in the shaft sealing cover pass through the sealing gasket with holes, and the sealing gasket is compressed by a nut to achieve a sufficient sealing effect.

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

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

[0104] Install the sample chamber assembly 4 at the bottom end of the central tube 302 of the electric heating assembly 3 and fix it on the central tube 302; lift the electric heating assembly 3 and the sample chamber assembly 4 through the lifting ring 301 on the electric heating assembly 3 and place them as a whole into the sleeve assembly 1; then install the circulation drive assembly 2;

[0105] Start the electric heating component 3 and the circulation drive component 2, and at the same time, introduce gas into the inner flow channel through the third tube body 1206. Under the action of the forced circulation driving force of the circulation drive component 2, the gas flows downward from the internal first flow channel formed by the shunt tube 13, flows out from the bottom of the shunt tube 13, turns back at the semicircular head at the bottom of the inner sleeve 12, flows upward along the external first flow channel, the interlayer hole flow channel 1206, and the external second flow channel, and flows back into the internal first flow channel through the opening on the guide tube 22 to realize gas circulation. The internal gas circulation drive of the irradiation device can be realized, the test temperature required by different irradiation samples can be achieved, and a universal irradiation device for different irradiation samples can be formed. The irradiation device can be reused many times to improve the agility of material irradiation testing and reduce testing costs.

[0106] 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.

[0107] The above are only 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 in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. An irradiation device, characterized in that: include: A sleeve assembly (1), wherein an inner flow channel and an outer flow channel are formed inside the sleeve assembly (1); The inner flow channel and the outer flow channel are filled with fluid; A circulation drive assembly (2), the circulation drive assembly (2) comprising a support pipe segment (21), a flow guide pipe (22) and a drive mechanism (23), the support pipe segment (21) being sleeved on the outside of the flow guide pipe (22), the drive mechanism (23) being arranged at one end of the support pipe segment (21), and the other end of the support pipe segment (21) being arranged on the open end of the sleeve assembly (1); An electric heating component (3), wherein the electric heating component (3) is arranged in the sleeve component (1); The circulation drive component (2) 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, so as to set different test temperatures.

2. An irradiation device according to claim 1, characterized in that: The sleeve assembly (1) comprises an outer sleeve (11), an inner sleeve (12) and a shunt pipe (13); the inner sleeve (12) and the shunt pipe (13) are arranged in sequence in the outer sleeve (11); an internal first flow channel is formed inside the shunt pipe (13); a spacing space is provided between the shunt pipe (13) and the inner sleeve (12) to form an external first flow channel; the open end of the inner sleeve (12) at least partially extends to the outside of the outer sleeve (11).

3. An irradiation device according to claim 2, characterized in that: The outer sleeve (11) comprises an outer tube body (1101) and a connecting pipe seat (1104); the connecting pipe seat (1104) is arranged on the outer peripheral surface of the outer tube body (1101); two connecting pipe ports are arranged on the outer side surface of the connecting pipe seat (1104); one of the connecting pipe ports is connected to the second tube body (1106), and the other connecting pipe port is connected to the first tube body (1105); and the first tube body (1105) passes through the connecting pipe seat (1104) and extends into the heat-insulating space formed by the outer sleeve (11) and the inner sleeve (12).

4. The irradiation device according to claim 2, characterized in that: The inner sleeve (12) comprises an inner tube body (1201) and an interlayer tube section (1204); the top of the open end of the inner tube body (1201) is connected to the interlayer tube section (1204); and the wall thickness of the inner tube body (1201) is smaller than the wall thickness of the interlayer tube section (1204).

5. An irradiation device according to claim 4, characterized in that: A plurality of interlayer hole flow channels (1205) are machined axially on the tube wall of the interlayer tube section (1204), and the interlayer hole flow channels (1205) are connected to the external first flow channel.

6. The irradiation device according to claim 4, characterized in that: A through hole is processed radially on the tube wall of the sandwich tube section (1204), which is connected to the third tube body (1206) so that fluid can flow into the inner sleeve (12).

7. The irradiation device according to claim 1, characterized in that: One end of the flow guide tube (22) is connected to the driving mechanism (23), and the other end extends into the sleeve assembly (1) and is sealedly connected to the sleeve assembly (1); an opening is provided on the flow guide tube (22) along the circumferential direction; an internal second flow channel is formed inside the flow guide tube (22); and an external second flow channel is formed between the flow guide tube (22) and the support pipe section (21).

8. The irradiation device according to claim 1, characterized in that: The driving mechanism (23) comprises a wind hood, one end of which is connected to the supporting pipe section (21), and a driving member (2303) is installed at the other end of the wind hood, a transmission shaft (2301) is arranged inside the wind hood, an output shaft of the driving member (2303) passes through the wind hood and extends into the wind hood, and is connected to one end of the transmission shaft (2301), and the other end of the transmission shaft (2301) passes through the wind hood and an impeller (2304) is arranged at the end.

9. The irradiation device according to claim 1, characterized in that: The electric heating assembly (3) comprises at least two layers of heating tube groups and a central tube (302). The heating tube group is sleeved on the central tube (302), and both ends of the central tube (302) extend outside the heating tube group.

10. The irradiation device according to claim 1, characterized in that: The irradiation device further comprises a sample chamber assembly (4), wherein the sample chamber assembly (4) is located inside the sleeve assembly (1) and is mounted on the electric heating assembly (3).

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