An irradiation test device

Abstract

This invention discloses an irradiation testing device, specifically relating to the field of fire-retardant coating testing technology. It includes a test chamber, an irradiation device, and a sample mounting base. The test chamber has a door, and the irradiation device is installed inside the chamber. The sample mounting base is rotatably mounted on the door and has multiple sets of sample mounting slots. A sample leveling assembly is also provided inside the test chamber. The leveling assembly includes a positioning roller and a leveling support frame. The positioning roller is mounted on the leveling support frame, which is installed inside the test chamber. The positioning roller is vertically positioned. This invention controls the rotation of the sample mounting base, causing the positioning roller to gradually contact each sample. After being squeezed and fixed by the positioning roller, the outer walls of the samples are aligned in the same plane. This ensures that the distance between the outer surface of each coating layer and the irradiation device is relatively uniform, thereby reducing test errors, improving test accuracy, and obtaining more precise test data.

Description

Technical Field

[0001] This invention relates to the field of fire-retardant coating testing technology, and more specifically, to an irradiation testing apparatus. Background Technology

[0002] Fire-retardant coatings are special coatings used to improve the fire resistance of substrates, prevent the rapid spread of fire, and extend escape time. They inhibit the spread of flames and the transfer of heat by forming a heat-insulating layer, releasing flame-retardant gases, or expanding to form a foam-like char layer in a fire. During the research and development and production of fire-retardant coatings, a series of tests are required to ensure coating quality. These tests typically involve applying the appropriate coating to a suitable material to create a sample, followed by fire resistance tests, physical property tests, chemical property tests, and environmental performance tests.

[0003] In certain specialized applications, materials need to withstand a certain level of radiation. Therefore, irradiation testing of fire-retardant coatings is particularly important for these specific environments (such as nuclear power plants, satellites, and other applications requiring resistance to high-energy radiation). This type of testing helps determine whether the coating retains its physicochemical properties and protective functions after exposure to radiation. The process involves simulating a radiation environment on the sample, subjecting it to irradiation, and then conducting a series of performance tests. In irradiation testing, a suitable radiation source must be selected; commonly used sources include gamma rays (γ rays), electron beams, and X-rays. The radiation dose is then determined, and different doses are set according to the requirements of the actual application environment to simulate long-term exposure to radiation. The prepared sample is then placed in the selected radiation source and irradiated at a predetermined dose rate. After irradiation, a series of performance tests are performed on the sample, comparing the changes in various properties before and after irradiation to evaluate the radiation resistance of the fire-retardant coating.

[0004] In the prior art, irradiation tests need to be conducted in a closed test environment. This involves installing the sample on a clamping device provided in a closed space, and then turning on the radiation source in the test environment to simulate irradiation. Since the test mainly focuses on the performance of the fire-retardant coating, the material, size, and thickness of the substrate in the sample are all the same. Therefore, to facilitate fixation, the parameters of the clamping device and the substrate are also compatible, and the spatial position of the substrate is relatively uniform after clamping.

[0005] However, the actual performance of fire-retardant coatings during the research and development process is unknown. Therefore, the impact of the final coating thickness on its performance is also unknown. Thus, in actual testing, it is necessary to prepare samples with various parameters, such as samples with the same substrate thickness, shape, and material, but different thicknesses of fire-retardant coating. After the substrate is fixed in place by the clamping device, the distance between the substrate surface and the radiation source is fixed due to the fixed spatial position of the substrate. However, because the thickness of the fire-retardant coating varies, the distance between the fire-retardant material surface and the radiation source differs. Furthermore, due to the different material thicknesses, the absorbed radiation energy and penetration performance also differ, resulting in different doses received on the surface and internally. Therefore, to further study the influence of material thickness, it is necessary to ensure that the distance between the coating surface and the radiation source is uniform, so that the dose and other parameters received by the outer surface of the fire-retardant coating on all samples are as similar as possible. However, the existing clamping devices are not compatible with the substrates of the samples. In actual testing, it is difficult to unify the spatial positions of the surfaces of the samples in the same experimental environment, leading to large errors in the test results and making it difficult to obtain accurate data. Summary of the Invention

[0006] The irradiation testing device provided by this invention aims to solve the problem that existing irradiation testing technologies suffer from large errors in test results and make it difficult to obtain accurate data due to the varying thickness of fire-retardant coatings and the different distances between the fire-retardant material surface and the radiation source.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an irradiation testing device, comprising a test chamber, an irradiation device, and a sample mounting base. The test chamber is provided with a door, the irradiation device is installed inside the test chamber, the sample mounting base is rotatably mounted on the door, and the sample mounting base is provided with multiple sets of sample mounting slots, the cross-sectional dimensions of the sample mounting slots being the same as the cross-sectional dimensions of the sample substrate.

[0008] The test chamber is also equipped with a sample leveling assembly, which includes positioning rollers and leveling support frames. Multiple positioning rollers are set up and installed on the leveling support frames. The leveling support frames are installed in the test chamber and the positioning rollers are set vertically.

[0009] An initial limiting frame is slidably installed in the sample mounting groove. The initial limiting frame is connected to the sample mounting groove through multiple sets of first elastic components. A compression clamping assembly is also provided around the inner wall of the sample mounting groove. The compression clamping assembly is used to compress and fix the side wall of the substrate after the sample is compressed by the positioning pressure roller.

[0010] In a preferred embodiment, a rotary actuator is fixedly installed in the chamber door, and a rotating shaft is provided on the sample mounting base. The rotating shaft is rotatably installed in the chamber door through a bearing structure. A bevel gear ring structure is fixedly installed on the outside of the rotating shaft of the sample mounting base. A small bevel gear structure that meshes with the bevel gear ring is provided on the output shaft of the rotary actuator. The rotary actuator is in transmission cooperation with the rotating shaft of the sample mounting base through the small bevel gear structure and the gear ring structure.

[0011] In a preferred embodiment, a transverse drive is installed inside the test chamber, and an extension structure is fixedly connected to the leveling support frame. The output end of the transverse drive is fixedly connected to the extension structure. The transverse drive is used to drive the leveling support frame to move closer to or away from the sample mounting seat.

[0012] In a preferred embodiment, the sample mounting base is provided with an air extraction channel inside, and each sample mounting slot is connected to the air extraction channel. A micro-air slit is provided at the position of the sample mounting slot corresponding to the side wall of the substrate. One end of the micro-air slit extends to the outer wall of the sample mounting base. An air pipe connector is provided in the door. The air pipe connector is rotatably engaged with the sample mounting base and is connected to the air extraction channel inside the sample mounting base. The air pipe connector is connected to an air extraction device through an air pipe. The air extraction device is used to extract air from the sample mounting slot to create a negative pressure.

[0013] In a preferred embodiment, the extrusion clamping assembly includes a piston block. Atmospheric pressure chambers are provided around the inner wall of the sample mounting groove. The piston block is slidably disposed in the piston block. After the substrate is squeezed and leveled by the positioning pressure roller, the piston block moves closer to the substrate and forms an extrusion and fixation on the substrate.

[0014] In a preferred embodiment, the atmospheric pressure chamber is connected to the outside air through an air passage, and the piston block is used to separate the sample mounting slot from the atmospheric pressure chamber. One end of the outer wall of the micro-air gap sample mounting seat extends to the side wall of the piston block.

[0015] In a preferred embodiment, the piston block includes a piston block and a pre-compression damping block. Both the piston block and the pre-compression damping block are slidably installed in an atmospheric pressure chamber, forming a piston structure between the piston block and the atmospheric pressure chamber. The pre-compression damping block is disposed on one side of the base plate corresponding to the piston block and is slidably connected to the piston block via a guide post. A second elastic component is installed between the pre-compression damping block and the piston block, providing the pre-compression damping block with an elastic force away from the piston block. A micro-air gap corresponds to the side wall of the pre-compression damping block. Multiple sets of pressure pins are fixedly connected to one side of the base plate corresponding to the piston block, and the pressure pins penetrate the pre-compression damping block. The pressure pins are made of a high-hardness metal structure.

[0016] In a preferred embodiment, the positioning roller consists of multiple unit rollers and a shaft. The multiple unit rollers are mounted together on the same shaft, which is rotatably mounted on a leveling support frame. Each unit roller has a reagent storage cavity at its top, which is used to hold potassium dichromate granules.

[0017] In a preferred embodiment, a piston carrier plate is slidably installed inside the reagent storage cavity, the piston carrier plate is slidably engaged with the shaft, and a mesh cylinder structure is engaged on the top of the piston carrier plate.

[0018] In a preferred embodiment, the shaft is a hollow structure, and a connecting hole is provided at the position of the reagent storage cavity at the bottom of the piston plate. An internal pipe is provided in the leveling support frame, and the internal pipe is rotatably engaged with the end of the shaft. The internal pipe is connected to the gas filling and defilling device.

[0019] The beneficial effects of this invention are as follows: By controlling the rotation of the sample mounting base, the positioning roller gradually contacts each sample, forming a compression on the surface of the coating layer of each sample, and further pressing the substrate into the sample mounting groove. The inner wall of the sample mounting groove is also provided with a compression clamping assembly, which is used to compress and fix the side wall of the substrate after the sample is compressed by the positioning roller. Since the surfaces that the positioning roller can restrict are relatively the same, the outer walls of the samples after being compressed and fixed by the positioning roller are in the same plane, thereby ensuring that the distance between the outer surface of each coating layer and the irradiation equipment is relatively uniform, thereby reducing test errors, improving test accuracy, and obtaining more accurate test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the test chamber of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the test chamber of the present invention.

[0022] Figure 3 This is a diagram showing the positional relationship between the positioning roller and the sample mounting seat inside the test chamber of this invention.

[0023] Figure 4 This is a schematic diagram showing the state in which the positioning pressure roller squeezes the sample surface when the sample mounting seat of the present invention rotates.

[0024] Figure 5 This is a diagram showing the location distribution of another sample mounting groove according to the present invention.

[0025] Figure 6 This invention is based on Figure 2 A magnified view of the local structure at the sample mounting groove.

[0026] Figure 7This diagram shows the state in which the positioning roller of the present invention presses the sample and the pressing clamping assembly fixes the substrate of the sample.

[0027] Figure 8 This is a schematic diagram of the working state of the improved extrusion clamping assembly of the present invention.

[0028] Figure 9 This is an enlarged view of the structure of the improved extrusion clamping assembly of the present invention.

[0029] Figure 10 This is a side view of the piston block in the improved extrusion clamping assembly of the present invention.

[0030] Figure 11 This is a schematic diagram of the improved positioning roller of the present invention.

[0031] Figure 12 This is an enlarged view of the structure of the unit roller of the present invention.

[0032] Figure 13 This is a diagram showing the state of the potassium dichromate granules being ejected by the control of the piston plate rising according to the present invention.

[0033] Figure 14 This is a schematic diagram of the process of removing potassium dichromate granules after removing the mesh structure according to the present invention.

[0034] Figure 15 This is a schematic diagram of the driving method of the leveling support frame of the present invention.

[0035] The attached figures are labeled as follows: 1. Test chamber; 11. Chamber door; 12. Gas pipe connector; 13. Rotation actuator; 14. Transverse actuator; 2. Irradiation equipment; 3. Sample mounting base; 31. Sample mounting groove; 32. Initial limiting frame; 321. First elastic component; 33. Compression clamping component; 331. Piston pressure block; 3311. Piston block; 3312. Pre-compression damping block; 3313. Guide column; 3314. Second elastic component; 3315. Pressure needle; 332. Atmospheric pressure chamber; 34. Micro-air gap; 4. Sample; 41. Substrate; 42. Coating layer; 5. Sample leveling component; 51. Positioning pressure roller; 511. Unit roller; 512. Reagent storage chamber; 513. Shaft; 514. Piston carrier plate; 515. Connecting hole; 516. Mesh cylinder structure; 52. Leveling support frame; 521. Extension structure; 522. Internal pipe. Detailed Implementation

[0036] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] Refer to the instruction manual appendix Figures 1 to 15 An irradiation testing device includes a test chamber 1 and an irradiation device 2. The irradiation device 2 is selected according to the testing requirements, such as a gamma ray irradiator, an electron beam accelerator, or an X-ray generator. Before use, the device needs to be calibrated to ensure that the dose rate and radiation field uniformity of the irradiation device meet the standard requirements. Detailed information about the irradiation device 2 and its operation method are common in existing irradiation testing schemes, and will not be explained in detail in this embodiment.

[0038] Unlike existing technologies, the test chamber 1 is equipped with a door 11. The irradiation device 2 is installed inside the test chamber 1. The door 11 is movably connected to the test chamber 1 and is equipped with a corresponding door lock structure. A sample mounting seat 3 is provided on the door 11 at the irradiation area corresponding to the irradiation area of ​​the irradiation device 2. The sample mounting seat 3 is rotatably mounted on the door 11. The sample mounting seat 3 is provided with multiple sets of sample mounting slots 31. The sample mounting slots 31 are used to accommodate the sample 4. The cross-sectional dimensions of the sample mounting slot 31 are the same as the cross-sectional dimensions of the substrate 41 of the sample 4, that is, the substrate 41 can be inserted into the sample mounting slot 31 without gaps. The multiple sets of sample mounting slots 31 are distributed in an array with the same horizontal and vertical spacing. For details, please refer to the appendix of the instruction manual. Figure 3 and Figure 5 The preferred method for the movable connection between the test chamber 1 and the chamber door 11 is that the side of the chamber door 11 is connected to the test chamber 1 by a hinge, so that when the chamber door 11 is opened, the sample mounting seat 3 is in a vertical state, so that the sample 4 can be installed into the corresponding sample mounting slot 31.

[0039] The test chamber 1 is also equipped with a sample leveling assembly 5, which includes a positioning roller 51 and a leveling support frame 52. The positioning roller 51 is configured in multiple groups and is rotatably mounted on the leveling support frame 52. The leveling support frame 52 is installed in the test chamber 1. The positioning roller 51 is set vertically, and each group of positioning rollers 51 is positioned along the position between two adjacent columns of sample mounting grooves 31 in the initial state of the corresponding sample mounting seat 3. This ensures that when the sample mounting seat 3 is not rotating, the positioning roller 51 will not obstruct the sample mounting seat 3, thereby reducing the irradiation effect on the sample 4.

[0040] Furthermore, an initial limiting frame 32 is slidably disposed in the sample mounting slot 31. The initial limiting frame 32 is connected to the sample mounting slot 31 through multiple sets of first elastic components 321. The first elastic components 321 can be springs or other elastic structures. When the first elastic components 321 are normally extended, the initial limiting frames 32 in each set of sample mounting slots 31 are in the same plane. When the sample 4 is initially installed into the sample mounting slot 31, the substrate 41 contacts the initial limiting frame 32, forming a limiting on the substrate 41, ensuring that after all samples 4 are installed, the side of each substrate 41 away from the coating layer 42 is in the same plane. At this time, since the thickness of the coating layer 42 in each set of samples 4 is different, the outer surface of the sample 4 is not in the same position. The present invention solves this problem by setting the sample... After the chamber door 11 is closed, the leveling component 5 controls the rotation of the sample mounting base 3, which allows the positioning roller 51 to gradually contact each sample 4, forming a pressure on the surface of the coating layer 42 of each sample 4, so that the substrate 41 is further pressed into the sample mounting groove 31. The inner wall of the sample mounting groove 31 is also provided with a compression clamping component 33. The compression clamping component 33 is used to compress and fix the side wall of the substrate 41 after the sample 4 is compressed by the positioning roller 51. Since the surface that the positioning roller 51 can restrict is relatively uniform, the outer wall of the sample 4 after being compressed and fixed by the positioning roller 51 is in the same plane, thereby ensuring that the distance between the outer surface of each coating layer 42 and the irradiation device 2 is relatively uniform, thereby reducing test errors, improving test accuracy, and obtaining more accurate test data.

[0041] Refer to the instruction manual appendix Figure 2 A rotary driver 13 is fixedly installed in the door 11. A rotating shaft is provided on the sample mounting seat 3. The rotating shaft is rotatably installed in the door 11 through a bearing structure. A bevel gear ring structure is fixedly installed on the outside of the rotating shaft of the sample mounting seat 3. A small bevel gear structure that meshes with the bevel gear ring is provided on the output shaft of the rotary driver 13. The rotary driver 13 is driven by the small bevel gear structure and the gear ring structure to achieve rotation control of the sample mounting seat 3.

[0042] It should be noted that the rotation control of the sample mounting base 3 is divided into two stages. The first stage is after the sample 4 is installed and the chamber door 11 is closed, the sample mounting base 3 is rotated to make the positioning pressure roller 51 level and squeeze all the samples 4. Then the sample mounting base 3 is rotated back to its initial position and the irradiation equipment 2 is turned on to conduct the irradiation test. During the test, in order to ensure that each sample is irradiated evenly and the parameters are as similar as possible, the rotation control in the second stage can be carried out. That is, the sample mounting base 3 is rotated 90° at intervals or continuously driven to rotate. This allows each sample 4 to pass through different positions, ensuring more uniform irradiation and improving the accuracy of the test.

[0043] Refer to the instruction manual appendix Figure 2 and Figure 15 The leveling support frame 52 is slidably installed inside the test chamber 1. The test chamber 1 is equipped with a transverse drive 14. An extension structure 521 is fixedly connected to the leveling support frame 52. (In this embodiment, the test chamber 1 consists of a conventional outer shell and a protective inner shell. The irradiation equipment 2, the sample mounting base 3, and the sample leveling component 5 all correspond to the inner shell space to ensure that the system can be effectively protected. Therefore, in order to facilitate the installation of the transverse drive 14 in a safe position, the extension structure 521 needs to pass through the protective inner shell of the test chamber 1.) The output end of the transverse drive 14 is fixedly connected to the extension structure 521. The transverse drive 14 is used to drive the leveling support frame 52 to move closer to or away from the sample mounting base 3. In actual use, the actual position of the positioning roller 51 can be adjusted according to the experimental requirements and the thickness of the sample 4 to adapt to more experimental requirements.

[0044] Furthermore, to facilitate the initial loading of the sample 4 and prevent it from falling out, the sample mounting base 3 is provided with an air extraction channel inside. Each sample mounting slot 31 is connected to the air extraction channel. The sample mounting slot 31 is provided with a micro air gap 34 at the position corresponding to the side wall of the substrate 41. One end of the micro air gap 34 extends to the outer wall of the sample mounting base 3. An air pipe connector 12 is provided in the door 11. The air pipe connector 12 is rotatably engaged with the sample mounting base 3, and the air pipe connector 12 is connected to the air extraction channel inside the sample mounting base 3. The air pipe connector 12 is connected to an air extraction device through an air pipe. The air extraction device is used to extract air from the sample mounting slot 31 to create a negative pressure.

[0045] It should be noted that, since a micro-air gap 34 is provided on the sample mounting groove 31, a complete seal is not formed when the substrate 41 is inserted into the sample mounting groove 31. Therefore, some airflow will enter the sample mounting groove 31 through the micro-air gap 34, so a complete negative pressure is not formed. By adjusting the inflation intensity of the pumping device, a certain pressure difference can be formed inside and outside the sample mounting groove 31. This pressure difference can provide a force to the substrate 41 into the sample mounting groove 31 (the pressure formed by the pressure difference at this time is less than the elastic force of the first elastic component 321, so the substrate 41 will not be continuously sucked into the sample mounting groove 31 due to air pressure). This can prevent the sample 4 from falling off during the process of closing the test chamber 1.

[0046] Further, please refer to the appendix to the instruction manual. Figure 6 and Figure 7 The extrusion clamping assembly 33 includes a piston block 331. The inner wall of the sample mounting groove 31 is provided with atmospheric pressure chambers 332 around the perimeter. The piston block 331 is slidably disposed in the piston block 331. After the substrate 41 is squeezed and leveled by the positioning pressure roller 51, the piston block 331 moves closer to the substrate 41 and forms a compression fixation on the substrate 41.

[0047] The atmospheric pressure chamber 332 is connected to the outside air through an air passage. The piston block 331 is used to separate the sample mounting slot 31 and the atmospheric pressure chamber 332, so that the piston block 331 forms a piston structure in the atmospheric pressure chamber 332. One end of the micro-air gap 34 extends from the outer wall of the sample mounting base 3 to the side wall of the piston block 331. When the sample 4 is initially installed in the sample mounting slot 31, under the restriction of the initial limiting frame 32, the inner side of the substrate 41 does not reach the piston block 331. Therefore, the substrate 41 does not completely block the micro-air gap 34. The internal space of the sample mounting slot 31 is connected to the external space through the micro-air gap 34. Since the micro-air gap 34 is small, a pressure difference can still be formed in the sample mounting slot 31 when the air extraction equipment is evacuating, forming the initial fixation of the sample 4. When the sample 4 is squeezed by the positioning pressure roller 51, the substrate 41 moves inward. When the side wall of the substrate 41 and the piston block 331 are pressed together... Upon contact, the piston block 331 of the substrate 41 seals the micro-air gap 34, creating a closed state within the piston block 331. At this point, increasing the suction intensity of the suction device creates an effective negative pressure in the sample mounting groove 31. This negative pressure causes the piston block 331 to tend to move inwards. Since the piston block 331 is already in contact with the substrate 41 when it is being squeezed, the aforementioned air pressure increases the squeezing force of the piston block 331 on the substrate 41, thereby increasing friction on the substrate 41. This prevents the sample 4 from being ejected by the initial limiting frame 32 after the positioning roller 51 leaves the sample 4. Furthermore, the higher the negative pressure intensity in the sample mounting groove 31, the greater the squeezing force of the piston block 331. As long as the negative pressure intensity of the sample mounting groove 31 remains unchanged during the test, the substrate 41 can be stably positioned, ensuring that the position of each sample 4 remains fixed after all samples 4 are leveled.

[0048] It should be noted that this embodiment only provides a solution for clamping and fixing the substrate 41. In fact, other equipment, such as cylinder clamps, can also be used. However, this embodiment uses air pressure to achieve automatic clamping and fixing after leveling the sample 4. The above solution has a simple structure, occupies little space, and does not require complex driving equipment on the sample mounting base 3, thus avoiding the irradiation of many electrical devices.

[0049] Furthermore, in order to increase the frictional resistance of the piston pressure block 331 to the substrate 41 during compression, refer to the appendix of the instruction manual. Figures 8 to 10This embodiment further improves the piston pressure block 331. Specifically, the piston pressure block 331 includes a piston block 3311 and a pre-pressure damping block 3312. Both the piston block 3311 and the pre-pressure damping block 3312 are slidably installed in the atmospheric pressure chamber 332, forming a piston structure between the piston block 3311 and the atmospheric pressure chamber 332. The pre-pressure damping block 3312 is disposed on one side of the base plate 41 corresponding to the piston block 3311. The pre-pressure damping block 3312 is connected to the guide post 3313. The piston block 3311 is slidably connected, and a second elastic component 3314 is installed between the pre-compression damping block 3312 and the piston block 3311. The second elastic component 3314 provides the pre-compression damping block 3312 with an elastic force away from the piston block 3311, such as a spring, leaf spring, or other elastic structure. The micro-air gap 34 corresponds to the side wall of the pre-compression damping block 3312, and thus, during the process of pressing the substrate 41 in, it first contacts the pre-compression damping block 3312, forming a micro-air gap. The piston block 3311 presses against the substrate 41 more as the negative pressure intensity in the sample mounting groove 31 increases, thereby increasing the pressure on the substrate 41. The resistance is increased by the pre-pressure damping block 3312. At the same time, multiple sets of pressure needles 3315 are fixedly connected to one side of the piston block 3311 corresponding to the substrate 41. The pressure needles 3315 are set through the pre-pressure damping block 3312. The pressure needles 3315 are high-hardness metal structures, such as alloy steel, tungsten steel, etc. As the negative pressure intensity in the sample mounting groove 31 continues to increase, the pressure of the piston block 3311 on the substrate 41 continues to increase, thereby causing the pressure needles 3315 to form a compression deformation on the surface of the substrate 41, further increasing the limiting resistance on the substrate 41. The higher the negative pressure intensity in the sample mounting groove 31, the greater the limiting resistance of the piston block 331 on the substrate 41, ensuring that the sample 4 will not be ejected by the initial limiting frame 32, and will not be excessively moved inward due to the negative pressure in the sample mounting groove 31.

[0050] In the above embodiments, in order to ensure the accuracy of the irradiation dose rate of the test system, periodic calibration is required. In the prior art, calibration can be performed by arranging a potassium dichromate dosimeter in the test chamber 1. Specifically, potassium dichromate granules are placed in the test chamber 1 and irradiated together with the sample 4 by the irradiation device 2 during the test. After irradiation, the potassium dichromate granules are removed and a dichromate solution is prepared. The absorbed dose is measured by the reduction reaction of Cr6+ in the dichromate solution by radiation. The radiation reduces Cr6+ to Cr3+. By measuring the concentration change of the corresponding substances before and after this chemical reaction, the radiation dose received by the system can be accurately calculated.

[0051] Therefore, this embodiment also provides the following technical solutions, specifically, please refer to the appendix to the specification. Figures 11 to 15The positioning roller 51 consists of multiple unit rollers 511 and a shaft 513. The multiple unit rollers 511 are mounted together on the same shaft 513. The shaft 513 is rotatably mounted on the leveling support frame 52. Each unit roller 511 has a reagent storage cavity 512 at its top. The reagent storage cavity 512 is used to place potassium dichromate granule reagent.

[0052] To reduce the impact of the sidewall of the reagent storage chamber 512 on the irradiation effect of potassium dichromate, this embodiment also provides the following technical solution: Specifically, a piston carrier plate 514 is slidably installed inside the reagent storage chamber 512. The piston carrier plate 514 is slidably engaged with the shaft 513. A mesh cylinder structure 516 is engaged at the top of the piston carrier plate 514. Before the actual test, the appropriate dose of potassium dichromate granules can be loaded into the corresponding reagent storage chamber 512 according to the distribution requirements and stored in the reagent storage chamber 512. When the actual test is conducted, the piston carrier plate 514 can be controlled to rise, pushing the potassium dichromate granules upward and confining them by the mesh cylinder structure 516. Since the mesh cylinder structure 516 is a mesh structure with thin sidewalls, it has little impact on the irradiation test, thus providing more accurate data during calibration testing.

[0053] Furthermore, the shaft 513 is a hollow structure, and the shaft 513 is provided with a connecting hole 515 at the bottom of the piston plate 514 in the reagent storage cavity 512. The leveling support frame 52 is provided with an internal pipe 522, which is rotatably engaged with the end of the shaft 513. The internal pipe 522 is connected to a gas charging and discharging device (for example, by means of a control valve and a pipe connecting a vacuum pump and a charging pump). The piston plate 514 is raised and lowered by gas charging and discharging. After the test, the mesh cylinder structure 516 is lifted to remove the potassium dichromate granule reagent.

[0054] It should be noted that the scheme for moving the leveling support frame 52 provided in the above embodiments can also control the position of the leveling support frame 52 during the calibration test to adjust the spatial position of each potassium dichromate granule reagent in the test chamber 1. At the same time, a control device for rotating the shaft 513 can be added so that the control unit roller 511 rotates during the test, making the potassium dichromate granule reagent more uniformly irradiated.

[0055] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An irradiation testing apparatus, characterized in that: The test chamber (1), irradiation equipment (2), and sample mounting base (3) are provided. The test chamber (1) is provided with a door (11). The irradiation equipment (2) is installed inside the test chamber (1). The sample mounting base (3) is rotatably mounted on the door (11). The sample mounting base (3) is provided with multiple sets of sample mounting slots (31). The cross-sectional dimensions of the sample mounting slots (31) are the same as the cross-sectional dimensions of the substrate (41) of the sample (4). The test chamber (1) is also equipped with a sample leveling assembly (5). The sample leveling assembly (5) includes a positioning roller (51) and a leveling support frame (52). The positioning roller (51) is configured in multiple sets. The positioning roller (51) is installed on the leveling support frame (52). The leveling support frame (52) is installed in the test chamber (1). The positioning roller (51) is arranged vertically. An initial limiting frame (32) is slidably arranged in the sample mounting groove (31). The initial limiting frame (32) is connected to the sample mounting groove (31) through multiple sets of first elastic components (321). A compression clamping assembly (33) is also arranged around the inner wall of the sample mounting groove (31). The compression clamping assembly (33) is used to compress and fix the side wall of the substrate (41) after the sample (4) is compressed by the positioning pressure roller (51).

2. The irradiation testing apparatus according to claim 1, characterized in that: A rotary drive (13) is fixedly installed in the box door (11). A rotating shaft is provided on the sample mounting base (3). The rotating shaft is rotatably installed in the box door (11) through a bearing structure. A bevel gear ring structure is fixedly installed on the outside of the rotating shaft of the sample mounting base (3). A small bevel gear structure that meshes with the bevel gear ring is provided on the output shaft of the rotary drive (13). The rotary drive (13) is in transmission cooperation with the rotating shaft of the sample mounting base (3) through the small bevel gear structure and the gear ring structure.

3. The irradiation testing apparatus according to claim 2, characterized in that: The test chamber (1) is equipped with a transverse drive (14), and an extension structure (521) is fixedly connected to the leveling support frame (52). The output end of the transverse drive (14) is fixedly connected to the extension structure (521). The transverse drive (14) is used to drive the leveling support frame (52) to move closer to or further away from the sample mounting base (3).

4. The irradiation testing apparatus according to claim 3, characterized in that: The sample mounting base (3) is provided with an air extraction channel inside. Each sample mounting slot (31) is connected to the air extraction channel. The sample mounting slot (31) is provided with a micro air gap (34) at the position corresponding to the side wall of the substrate (41). One end of the micro air gap (34) extends to the outer wall of the sample mounting base (3). The door (11) is provided with a gas pipe connector (12). The gas pipe connector (12) is rotatably engaged with the sample mounting base (3). The gas pipe connector (12) is connected to the air extraction channel inside the sample mounting base (3). The gas pipe connector (12) is connected to an air extraction device through a gas pipe. The air extraction device is used to extract air from the sample mounting slot (31) to form a negative pressure.

5. The irradiation testing apparatus according to claim 4, characterized in that: The extrusion clamping assembly (33) includes a piston block (331). The inner wall of the sample mounting groove (31) is provided with atmospheric pressure chambers (332) around its perimeter. The piston block (331) is slidably disposed in the piston block (331). After the substrate (41) is squeezed and leveled by the positioning pressure roller (51), the piston block (331) moves closer to the substrate (41) and forms a compression fixation on the substrate (41).

6. The irradiation testing apparatus according to claim 5, characterized in that: The atmospheric pressure chamber (332) is connected to the outside air through the air passage. The piston block (331) is used to separate the sample mounting slot (31) and the atmospheric pressure chamber (332). One end of the outer wall of the micro air gap (34) of the sample mounting seat (3) extends to the side wall of the piston block (331).

7. The irradiation testing apparatus according to claim 6, characterized in that: The piston block (331) includes a piston block (3311) and a pre-pressure damping block (3312). Both the piston block (3311) and the pre-pressure damping block (3312) are slidably mounted in the atmospheric pressure chamber (332). A piston structure is formed between the piston block (3311) and the atmospheric pressure chamber (332). The pre-pressure damping block (3312) is disposed on one side of the piston block (3311) corresponding to the base plate (41). The pre-pressure damping block (3312) is slidably connected to the piston block (3311) via a guide post (3313). A second elastic component (3314) is installed between the pre-compression damping block (3312) and the piston block (3311). The second elastic component (3314) provides a spring force to the pre-compression damping block (3312) away from the piston block (3311). The micro-air gap (34) corresponds to the side wall of the pre-compression damping block (3312). The piston block (3311) is fixedly connected to one side of the base plate (41) with multiple sets of pressure needles (3315). The pressure needles (3315) are disposed through the pre-compression damping block (3312). The pressure needles (3315) are high-hardness metal structures.

8. The irradiation testing apparatus according to claim 7, characterized in that: The positioning roller (51) consists of multiple unit rollers (511) and a shaft (513). The multiple unit rollers (511) are mounted together on the same shaft (513). The shaft (513) is rotatably mounted on the leveling support frame (52). Each unit roller (511) has a reagent storage cavity (512) at its top, which is used to hold potassium dichromate granule reagent.

9. The irradiation testing apparatus according to claim 8, characterized in that: A piston carrier plate (514) is slidably installed inside the reagent storage cavity (512). The piston carrier plate (514) is slidably engaged with the shaft (513). A mesh cylinder structure (516) is engaged on the top of the piston carrier plate (514).

10. An irradiation testing apparatus according to claim 9, characterized in that: The shaft (513) is a hollow structure. The shaft (513) is provided with a connecting hole (515) at the bottom of the piston plate (514) in the reagent storage cavity (512). The leveling support frame (52) is provided with an internal pipe (522). The internal pipe (522) is rotatably engaged with the end of the shaft (513). The internal pipe (522) is connected to the gas filling and defilling device.

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