Irradiation test device

Abstract

The invention discloses an irradiation test device, and particularly relates to the technical field of fireproof coating testing, the irradiation test device comprises a test box, irradiation equipment and a sample mounting seat, the test box is provided with a box door, the irradiation equipment is mounted in the test box, the sample mounting seat is rotatably mounted on the box door, and the sample mounting seat is provided with a plurality of groups of sample mounting grooves; a sample leveling assembly is further arranged in the test box and comprises a positioning compression roller and a leveling supporting frame, the positioning compression roller is installed on the leveling supporting frame, the leveling supporting frame is installed in the test box, and the positioning compression roller is vertically arranged. The sample mounting seat is controlled to rotate, so that the positioning compression roller is gradually contacted with each sample, and the outer walls of the samples extruded and fixed by the positioning compression roller are positioned in the same plane, so that the distances from the outer surfaces of coating layers to irradiation equipment are relatively uniform, the test error is reduced, the test precision is improved, and the test efficiency is improved. And more accurate test data can be obtained.

Description

Technical Field

[0001] The invention relates to the technical field of fire retardant coating testing, and more specifically to an irradiation testing device. Background Art

[0002] Fire retardant coatings are special coatings used to improve the fire resistance of substrates, prevent fires from spreading quickly and prolong escape time. They inhibit the spread of flames and heat transfer by forming a heat-insulating layer, releasing flame-retardant gases or expanding to form a foamy carbon layer in a fire. During the research and development and production of fire retardant coatings, a series of tests are required to ensure the quality of the coatings. Usually, the corresponding coatings are applied to the corresponding materials to make samples, and then fire resistance tests, physical performance tests, chemical performance tests, and environmental performance tests are carried out.

[0003] In some special application scenarios, materials need to deal with certain radiation. Therefore, for these specific application environments (such as nuclear power plants, satellites and other occasions that need to resist high-energy radiation), irradiation testing of fire retardant coatings is particularly important. This type of test can help determine whether the coating can still maintain its physical and chemical properties and protective functions after being exposed to radiation. That is, the radiation environment of the sample is simulated first, and the sample is irradiated, and then a series of performance tests are carried out. In the irradiation test, it is necessary to select a suitable radiation source. Commonly used radiation sources include gamma rays (γ rays), electron beams and X-rays, etc., and then determine the radiation dose. According to the requirements of the actual application environment, different radiation doses are set to simulate long-term exposure to the radiation environment. 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 carried out on the sample to compare the performance changes of the sample before and after irradiation, and evaluate the radiation resistance of the fire retardant coating.

[0004] In the prior art, it is necessary to carry out irradiation tests in a closed test environment, that is, the sample is installed on a clamping device provided in a closed space, and then the radiation source in the test environment is turned on to perform irradiation simulation. Since the performance of the fire retardant coating is mainly tested during the test, the material, size, thickness and other parameters of the substrate part in the sample are the same. Therefore, in order to facilitate fixation, the parameters of the clamping device and the substrate are also adapted to each other, and the spatial position of the substrate is relatively uniform after clamping.

[0005] However, for the fire retardant coating in the process of research and development, its actual performance is in an unknown state. Therefore, the final coating thickness of the coating and its influence on its performance itself are not yet known. Therefore, in the actual test process, it is necessary to prepare a variety of samples with different parameters, for example, samples with the same substrate thickness, shape and material, but different thicknesses of fire retardant coatings, etc. Therefore, after the substrate is fixed by the clamping device, since the spatial position of the substrate is fixed, the distance of the substrate surface relative to the radiation source is fixed, but due to the different thicknesses of the fire retardant coatings, the distance of the surface of the fire retardant material from the radiation source is different. Due to the different thicknesses of the materials, the absorbed radiation energy is different, the penetration performance is also different, and the dose received by the surface is different from the dose received inside. Therefore, in order 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 as to ensure that the parameters such as the dose received by the outer surface of the fire retardant coating on all samples are as similar as possible. However, the clamping device in the existing equipment is adapted to the substrate of the sample. In actual testing, it is difficult to unify the spatial positions of the surfaces of each sample in the same test environment, which leads to large errors in the test results and it is difficult to obtain accurate relevant data. Summary of the invention

[0006] The present invention provides an irradiation test device to solve the problem that in the existing irradiation test technology, due to the different thickness of the fire retardant coating and the different distances between the surface of the fire retardant material and the radiation source, the test results have large errors and it is difficult to obtain accurate relevant data.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an irradiation test device, comprising a test box, an irradiation device and a sample mounting seat, the test box is provided with a box door, the irradiation device is installed inside the test box, the sample mounting seat is rotatably mounted on the box door, the sample mounting seat is provided with a plurality of groups of sample mounting grooves, and the size of the cross section of the sample mounting groove is the same as the size of the cross section of the substrate of the sample;

[0008] A sample leveling assembly is also provided in the test box. The sample leveling assembly includes a positioning roller and a leveling support frame. The positioning rollers are provided in multiple groups. The positioning rollers are installed on the leveling support frame. The leveling support frame is installed in the test box. The positioning rollers are arranged vertically.

[0009] An initial limit frame is slidably arranged in the sample installation groove, and the initial limit frame is connected to the sample installation groove through multiple groups of first elastic components. Extrusion clamping components are also arranged around the inner wall of the sample installation groove, and the extrusion clamping components are used to extrude and fix the side wall of the substrate after the sample is squeezed by the positioning roller.

[0010] In a preferred embodiment, a rotary driver is fixedly installed in the box door, a rotating shaft portion is provided on the sample mounting seat, and the rotating shaft portion is rotatably installed in the box door through a bearing structure, a bevel gear ring structure is fixedly installed on the outer side of the rotating shaft portion of the sample mounting seat, and a small bevel gear structure meshing with the bevel gear ring is provided on the output shaft of the rotary driver, and the rotary driver cooperates with the rotating shaft portion of the sample mounting seat through the small bevel gear structure and the gear ring structure.

[0011] In a preferred embodiment, a transverse drive is installed in the test box, 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, and 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, an exhaust channel is provided inside the sample mounting seat, and each sample mounting groove is connected to the exhaust channel. A micro air gap is provided at a position of the sample mounting groove corresponding to the side wall of the substrate, and one end of the micro air gap extends to the outer wall of the sample mounting seat. An air pipe joint is provided in the box door, and the air pipe joint is rotatably matched with the sample mounting seat, and the air pipe joint is connected to the exhaust channel in the sample mounting seat. The air pipe joint is connected to an exhaust device through an air pipe, and the exhaust device is used to exhaust air from the sample mounting groove to form a negative pressure.

[0013] In a preferred embodiment, the extrusion clamping assembly includes a piston block, and a normal pressure chamber is arranged around the inner wall of the sample mounting groove. The piston block is slidably arranged in the piston block. After the substrate is squeezed and leveled by the positioning roller, the piston block approaches the substrate and squeezes and fixes the substrate.

[0014] In a preferred embodiment, the normal pressure chamber is connected to the outside air through an air duct, the piston block is used to separate the sample mounting groove and the normal pressure chamber, and 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 pressure block includes a piston block and a pre-compression damping block, which are both slidably installed in the normal pressure chamber, and a piston structure is formed between the piston block and the normal pressure chamber. The pre-compression damping block is arranged on a side of the substrate corresponding to the piston block, and the pre-compression damping block is slidably connected to the piston block through a guide column. A second elastic component is installed between the pre-compression damping block and the piston block, and the second elastic component provides an elastic force for the pre-compression damping block to move away from the piston block. The micro air gap corresponds to the side wall of the pre-compression damping block, and a plurality of groups of pressure needles are fixedly connected to one side of the substrate corresponding to the piston block. The pressure needles penetrate the pre-compression damping block and are a high-hardness metal structure.

[0016] In a preferred embodiment, the positioning roller is composed of a plurality of unit rollers and an axle rod, and the plurality of unit rollers are mounted on the same axle rod, and the axle rod is rotatably mounted on a leveling support frame, and a reagent storage cavity is provided on the top of each unit roller, and the reagent storage cavity is used to place potassium dichromate granular reagent.

[0017] In a preferred embodiment, a piston carrier is slidably mounted inside the reagent storage chamber, the piston carrier is slidably matched with the shaft rod, and a mesh cylinder structure is mounted on the top of the piston carrier.

[0018] In a preferred embodiment, the shaft rod is a hollow structure, and a connecting hole is provided at a position of the shaft rod corresponding to the reagent storage chamber located at the bottom of the piston carrier plate. A built-in pipe is provided in the leveling support frame, and the built-in pipe is rotatably matched with the end of the shaft rod, and the built-in pipe is connected to the inflation and deflation equipment.

[0019] The beneficial effects of the present invention are as follows: the present invention controls the rotation of the sample mounting seat so that the positioning roller gradually contacts each sample, squeezes the surface of the coating layer of each sample, and further presses the substrate into the sample mounting groove. The inner wall of the sample mounting groove is also surrounded by a squeezing and clamping assembly, which is used to squeeze and fix the side wall of the substrate after the sample is squeezed by the positioning roller. Since the surfaces that can be restricted by the positioning roller are relatively the same, the outer walls of the samples squeezed 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 This is a positional relationship diagram between the positioning pressure roller and the sample mounting seat in the test box of the present invention.

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

[0024] Figure 5 This is a position distribution diagram of another sample installation groove of the present invention.

[0025] Figure 6 The present invention is based on Figure 2 An enlarged view of the local structure of the specimen mounting slot.

[0026] Figure 7This is a diagram showing a state in which the clamping assembly fixes the substrate of the sample after the positioning roller of the present invention has squeezed 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] Fig. 9 This is an enlarged view of the structure of the improved extrusion clamping assembly of the present invention.

[0029] Fig.10 The figure is a side view of the piston pressing block in the improved extrusion clamping assembly of the present invention.

[0030] Fig.11 It is a schematic structural diagram of the improved positioning pressure roller of the present invention.

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

[0032] Fig.13 This is a state diagram of the present invention controlling the piston carrier plate to rise to eject the potassium dichromate granular reagent.

[0033] Fig.14 It is a schematic diagram of taking out the potassium dichromate particle reagent after removing the net cylinder structure according to the present invention.

[0034] Fig.15 It is a schematic diagram of the driving mode of the leveling support frame of the present invention.

[0035] The accompanying drawings are marked as follows: 1. test box; 11. box door; 12. air pipe joint; 13. rotation drive; 14. transverse drive; 2. irradiation equipment; 3. sample mounting seat; 31. sample mounting groove; 32. initial limit frame; 321. first elastic component; 33. extrusion clamping component; 331. piston pressure block; 3311. piston block; 3312. pre-load damping block; 3313. guide column; 3314. second elastic component; 3315. pressure needle; 332. normal 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; 515. connecting hole; 516. mesh tube structure; 52. leveling support frame; 521. extension structure; 522. built-in pipeline. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] Refer to the instruction manual Figures 1 to 15 An irradiation test device includes a test box 1 and an irradiation device 2, wherein the irradiation device 2 selects a suitable irradiation device according to the test requirements, such as a gamma ray irradiator, an electron beam accelerator, an X-ray generator, etc. When in use, the equipment needs to be calibrated first to ensure that the dose rate and radiation field uniformity of the irradiation equipment meet the standard requirements after calibration. The detailed information and operating methods of the irradiation device 2 are all commonly used solutions in existing irradiation tests, and will not be explained in detail in this embodiment.

[0038] Different from the prior art, the test box 1 is provided with a box door 11, the irradiation equipment 2 is installed inside the test box 1, the box door 11 is movably connected to the test box 1, and a corresponding door lock structure is provided. A sample mounting seat 3 is provided on the box door 11 at the irradiation area corresponding to the irradiation equipment 2, and the sample mounting seat 3 is rotatably mounted on the box door 11. A plurality of groups of sample mounting grooves 31 are provided on the sample mounting seat 3, and the sample mounting grooves 31 are used to accommodate the sample 4. The cross-sectional size of the sample mounting groove 31 is the same as the cross-sectional size of the substrate 41 of the sample 4, that is, the substrate 41 can be just inserted into the sample mounting groove 31 without leaving a gap, and the plurality of groups of sample mounting grooves 31 are distributed in an array with the same horizontal and vertical spacing. For details, please refer to the attached manual. Figure 3 and Figure 5 The movable connection between the test box 1 and the door 11 is preferably that the side of the door 11 is connected to the test box 1 by a hinge, so that when the door 11 is opened, the sample mounting seat 3 is in a vertical state, so that the sample 4 can be loaded into the corresponding sample mounting groove 31.

[0039] A sample leveling assembly 5 is also provided in the test box 1. The sample leveling assembly 5 includes positioning rollers 51 and a leveling support frame 52, wherein the positioning rollers 51 are arranged in multiple groups, the positioning rollers 51 are rotatably mounted on the leveling support frame 52, the leveling support frame 52 is installed in the test box 1, the positioning rollers 51 are arranged vertically, and each group of positioning rollers 51 is arranged along the position between two adjacent rows of sample mounting grooves 31 when the corresponding sample mounting seat 3 is in the initial state, to ensure that when the sample mounting seat 3 does not rotate, the positioning rollers 51 will not block the sample mounting seat 3, thereby reducing the radiation impact on the sample 4.

[0040] Furthermore, an initial limiting frame 32 is slidably provided in the sample installation groove 31, and the initial limiting frame 32 is connected to the sample installation groove 31 through multiple groups of first elastic components 321. The first elastic components 321 can be selected from springs or other elastic structures. When the first elastic components 321 are normally stretched, the initial limiting frames 32 in each group of sample installation grooves 31 are in the same plane. When the sample 4 is initially loaded into the sample installation groove 31, the substrate 41 contacts the initial limiting frame 32 to limit the substrate 41, ensuring that after all the samples 4 are loaded, the sides of each substrate 41 facing away from the coating layer 42 are in the same plane. At this time, since the thickness of the coating layer 42 in each group of samples 4 is different, the outer surfaces of the samples 4 are not in the same position. The leveling assembly 5 controls the rotation of the sample mounting seat 3 after closing the box door 11, so that the positioning roller 51 can gradually contact each sample 4, squeeze the surface of the coating layer 42 of each sample 4, and make the substrate 41 further pressed into the sample mounting groove 31, and the inner wall of the sample mounting groove 31 is also provided with an extrusion clamping assembly 33. The extrusion clamping assembly 33 is used to squeeze and fix the side wall of the substrate 41 after the sample 4 is squeezed by the positioning roller 51. Since the surface that can be restricted by the positioning roller 51 is relatively uniform, the outer wall of the sample 4 after being squeezed 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 equipment 2 is relatively uniform, thereby reducing the test error, improving the test accuracy, and obtaining more accurate test data.

[0041] Refer to the instruction manual Figure 2 A rotation driver 13 is fixedly installed in the box door 11, and a rotating shaft portion is provided on the sample mounting seat 3, which is rotatably installed in the box door 11 through a bearing structure. A bevel gear ring structure is fixedly installed on the outer side of the rotating shaft portion of the sample mounting seat 3, and a small bevel gear structure meshing with the bevel gear ring is provided on the output shaft of the rotation driver 13. The rotation driver 13 cooperates with the rotating shaft portion of the sample mounting seat 3 through the small bevel gear structure and the gear ring structure, thereby realizing the rotation control of the sample mounting seat 3.

[0042] It should be noted that the above rotation control of the sample mounting seat 3 is divided into two stages. The first stage is that after the sample 4 is just installed and the box door 11 is closed, the sample mounting seat 3 is driven to rotate so that the positioning roller 51 can level and extrude all the samples 4, and then the sample mounting seat 3 is controlled to rotate to the initial state, and then the irradiation equipment 2 is turned on to perform irradiation testing. During the test, in order to ensure that each sample is irradiated evenly and the parameters are as similar as possible, the second stage of rotation control can be performed, that is, the sample mounting seat 3 is driven to rotate 90° in sequence at intervals, or the sample mounting seat 3 is continuously driven to rotate, so that each sample 4 can pass through different positions to ensure that the irradiation is more uniform and the test accuracy is improved.

[0043] Refer to the instruction manual Figure 2 and Fig.15 The leveling support frame 52 is slidably installed in the test box 1, and a transverse drive 14 is installed in the test box 1. An extension structure 521 is fixedly connected to the leveling support frame 52 (in this embodiment, the test box 1 is composed of an outer shell of a conventional structure and an inner shell for protection. The irradiation equipment 2, the sample mounting seat 3 and the sample leveling assembly 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 in the test box 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 seat 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 meet more experimental requirements.

[0044] Furthermore, in order to facilitate the initial loading of the sample 4 and prevent it from falling out, an exhaust channel is provided inside the sample mounting seat 3, and each sample mounting groove 31 is connected to the exhaust channel. A micro air gap 34 is provided at a position on the side wall of the substrate 41 corresponding to the sample mounting groove 31, and one end of the micro air gap 34 extends to the outer wall of the sample mounting seat 3. An air pipe joint 12 is provided in the box door 11, and the air pipe joint 12 is rotatably matched with the sample mounting seat 3, and the air pipe joint 12 is connected to the exhaust channel in the sample mounting seat 3. The air pipe joint 12 is connected to an exhaust device through an air pipe, and the exhaust device is used to exhaust air from the sample mounting groove 31 to form 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 installed in the sample mounting groove 31. Therefore, part of the air flow will enter the sample mounting groove 31 from the micro air gap 34, so no complete negative pressure is formed. By adjusting the inflation strength of the vacuum equipment, a certain pressure difference can be formed inside and outside the sample mounting groove 31. The pressure difference can provide a force to the substrate 41 toward 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 reasons), thereby preventing the sample 4 from falling off during the closing process of the test chamber 1.

[0046] For further information, please refer to the attached manual. Figure 6 and Figure 7 The extrusion clamping assembly 33 includes a piston block 331. A normal pressure chamber 332 is arranged around the inner wall of the sample mounting groove 31. The piston block 331 is slidably arranged in the piston block 331. After the substrate 41 is squeezed and leveled by the positioning roller 51, the piston block 331 approaches the substrate 41 and squeezes and fixes the substrate 41.

[0047] The normal pressure chamber 332 is connected to the outside air through the air passage, and the piston pressing block 331 is used to separate the sample mounting groove 31 and the normal pressure chamber 332, so that the piston pressing block 331 forms a piston structure in the normal pressure chamber 332, and the micro air gap 34 extends from one end of the outer wall of the sample mounting seat 3 to the side wall of the piston pressing block 331. When the sample 4 is initially loaded into the sample mounting groove 31, under the restriction of the initial limit frame 32, the inner side surface of the substrate 41 does not reach the piston pressing block 331. Therefore, the substrate 41 does not completely block the micro air gap 34. The internal space of the sample mounting groove 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 groove 31 when the vacuum equipment is pumping air, thereby initially fixing the sample 4. When the sample 4 is squeezed by the positioning roller 51, the substrate 41 moves inward. When the side wall of the substrate 41 and the piston pressing block 331 are After the contact, at this time, the piston block 331 of the substrate 41 forms a blockage on the micro air gap 34, and a closed state is formed in the piston block 331. At this time, the suction strength of the suction equipment is increased to form an effective negative pressure in the sample mounting groove 31. The negative pressure prompts the piston block 331 to form a tendency to move inward. Since the piston block 331 is already in contact with the substrate 41 when the substrate 41 is squeezed, the above-mentioned air pressure can increase the squeezing force of the piston block 331 on the substrate 41, thereby increasing the friction on the substrate 41, and preventing the sample 4 from being ejected by the initial limit frame 32 after the positioning roller 51 leaves the sample 4. The higher the negative pressure strength in the sample mounting groove 31, the greater the squeezing force of the piston block 331. As long as the negative pressure strength of the sample mounting groove 31 does not change during the test, the stable positioning of the substrate 41 can be maintained at all times, and then after all the samples 4 are leveled, the position of each sample 4 can be kept fixed.

[0048] It should be noted that the present embodiment only provides a solution for clamping and fixing the substrate 41. In fact, other equipment, such as a cylinder clamp, may also be used. However, the present embodiment uses air flow pressure to achieve automatic clamping and fixing after leveling the sample 4. The above solution has a simple structure and occupies a small space. There is no need to set up complex driving equipment on the sample mounting base 3, which can prevent more electrical equipment from being affected by radiation.

[0049] Further, in order to increase the friction resistance of the piston pressing block 331 to the substrate 41 when it is pressed, refer to the attached manual. Figures 8 to 10The present embodiment further improves the piston pressing block 331. Specifically, the piston pressing block 331 includes a piston block 3311 and a pre-compression damping block 3312. The piston block 3311 and the pre-compression damping block 3312 are both slidably installed in the normal pressure chamber 332. A piston structure is formed between the piston block 3311 and the normal pressure chamber 332. The pre-compression damping block 3312 is arranged on one side of the piston block 3311 corresponding to the substrate 41. The pre-compression damping block 3312 is connected to the piston block 3311 through the guide column 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 an elastic force for the pre-compression damping block 3312 to be away from the piston block 3311, such as a spring, a reed, or other elastic structures. The micro air gap 34 corresponds to the side wall of the pre-compression damping block 3312, and then when the substrate 41 is pressed in, it first contacts the pre-compression damping block 3312 to form a micro air gap. 34 is blocked, and then as the negative pressure intensity in the sample installation groove 31 increases, the piston block 3311 increases the extrusion of the substrate 41, thereby increasing the pressure on the substrate 41, and increasing the resistance with the help of the pre-compression damping block 3312. At the same time, the piston block 3311 is fixedly connected to one side of the corresponding substrate 41 with multiple groups of pressure needles 3315, and the pressure needles 3315 penetrate the pre-compression 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 installation 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 an extrusion deformation on the surface of the substrate 41, further increasing the limiting resistance to the substrate 41, and the higher the negative pressure intensity in the sample installation groove 31, the greater the limiting resistance of the piston pressure block 331 to the substrate 41, ensuring that the sample 4 will not be ejected by the initial limit frame 32, and will not be excessively moved inward due to the negative pressure in the sample installation groove 31.

[0050] In the above embodiment, in order to ensure the accuracy of the irradiation dose rate of the test system, regular calibration is required. In the prior art, a potassium dichromate dosimeter can be arranged in the test box 1 for calibration. Specifically, a potassium dichromate particle reagent is set in the test box 1, and is irradiated by the irradiation equipment 2 together with the sample 4 during the test. After the irradiation, the potassium dichromate particle reagent is taken out to prepare a dichromate solution. 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 changes 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, for details, refer to the attached specification Figures 11 to 15The positioning roller 51 is composed of a plurality of unit rollers 511 and a shaft 513. The plurality of unit rollers 511 are mounted on the same shaft 513. The shaft 513 is rotatably mounted on the leveling support frame 52. A reagent storage cavity 512 is provided on the top of each unit roller 511. The reagent storage cavity 512 is used to place potassium dichromate particle reagent.

[0052] Among them, in order to reduce the influence of the side wall of the reagent storage chamber 512 on the irradiation effect of potassium dichromate, the present embodiment also provides the following technical solutions. Specifically, a piston carrier plate 514 is slidably installed inside the reagent storage chamber 512. The piston carrier plate 514 is slidably matched with the shaft rod 513. A mesh tube structure 516 is installed on the top of the piston carrier plate 514. Before the actual test, the corresponding dose of potassium dichromate granular reagent 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 performed, the piston carrier plate 514 can be controlled to rise, and the potassium dichromate granular reagent can be pushed out upward and restricted by the mesh tube structure 516. Since the mesh tube structure 516 is a mesh structure, its side wall itself is thin, so it has less effect on the irradiation test, thereby providing more accurate data during the calibration test.

[0053] Furthermore, the shaft 513 is a hollow structure, and a connecting hole 515 is provided at a position of the shaft 513 corresponding to the reagent storage chamber 512 at the bottom of the piston carrier 514. A built-in pipe 522 is provided in the leveling support frame 52. The built-in pipe 522 is rotatably matched with the end of the shaft 513. The built-in pipe 522 is connected to the inflation and deflation equipment (for example, the vacuum pump and the inflation pump are connected by means of a control valve and a pipe), and the piston carrier 514 is controlled to rise and fall by inflation and deflation. After the test, the mesh tube structure 516 is lifted up to remove the potassium dichromate granular reagent.

[0054] It should be noted that the solution for controlling the movement of the leveling support frame 52 provided in the above embodiment can also control the position of the leveling support frame 52 during the calibration test to adjust the spatial position of each potassium dichromate particle reagent in the test box 1. At the same time, a control device for controlling the rotation of the shaft 513 can be added to control the rotation of the control unit roller 511 during the self-test process to make the potassium dichromate particle reagent more evenly irradiated.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An irradiation test device, characterized in that: The invention comprises a test box (1), an irradiation device (2) and a sample mounting seat (3), wherein the test box (1) is provided with a box door (11), the irradiation device (2) is mounted inside the test box (1), the sample mounting seat (3) is rotatably mounted on the box door (11), and the sample mounting seat (3) is provided with a plurality of groups of sample mounting grooves (31), and the cross-sectional dimensions of the sample mounting grooves (31) are the same as the cross-sectional dimensions of the base plate (41) of the sample (4); A sample leveling assembly (5) is also provided in the test box (1), the sample leveling assembly (5) comprising positioning rollers (51) and a leveling support frame (52), the positioning rollers (51) are arranged in a plurality of groups, the positioning rollers (51) are mounted on the leveling support frame (52), the leveling support frame (52) is installed in the test box (1), and the positioning rollers (51) are arranged vertically; An initial limiting frame (32) is slidably arranged in the sample installation groove (31), and the initial limiting frame (32) is connected to the sample installation groove (31) via a plurality of groups of first elastic components (321). An extrusion clamping component (33) is also arranged around the inner wall of the sample installation groove (31), and the extrusion clamping component (33) is used to extrude and fix the side wall of the substrate (41) after the sample (4) is squeezed by the positioning roller (51).

2. The irradiation test device according to claim 1, characterized in that: A rotary driver (13) is fixedly installed in the box door (11); a rotating shaft portion is provided on the sample mounting seat (3), and the rotating shaft portion is rotatably installed in the box door (11) via a bearing structure; a bevel gear ring structure is fixedly installed on the outer side of the rotating shaft portion of the sample mounting seat (3); a small bevel gear structure meshing with the bevel gear ring is provided on the output shaft of the rotary driver (13); and the rotary driver (13) is transmission-coordinated with the rotating shaft portion of the sample mounting seat (3) via the small bevel gear structure and the gear ring structure.

3. The irradiation test device according to claim 2, characterized in that: A transverse drive (14) is installed in the test box (1), an extension structure (521) is fixedly connected to the leveling support frame (52), an output end of the transverse drive (14) is fixedly connected to the extension structure (521), and the transverse drive (14) is used to drive the leveling support frame (52) to move closer to or away from the sample mounting seat (3).

4. The irradiation test device according to claim 3, characterized in that: An exhaust channel is provided inside the sample mounting seat (3), and each of the sample mounting grooves (31) is connected to the exhaust channel. A micro air gap (34) is provided at a position of the sample mounting groove (31) corresponding to the side wall of the substrate (41), and one end of the micro air gap (34) extends to the outer wall of the sample mounting seat (3). An air pipe joint (12) is provided in the box door (11), and the air pipe joint (12) is rotatably matched with the sample mounting seat (3), and the air pipe joint (12) is connected to the exhaust channel in the sample mounting seat (3). The air pipe joint (12) is connected to an exhaust device via an air pipe, and the exhaust device is used to exhaust air from the sample mounting groove (31) to form a negative pressure.

5. The irradiation test device according to claim 4, characterized in that: The extrusion clamping assembly (33) comprises a piston pressing block (331). The inner wall of the sample installation groove (31) is provided with a normal pressure chamber (332) on all sides. The piston pressing block (331) is slidably arranged in the piston pressing block (331). After the substrate (41) is squeezed and leveled by the positioning roller (51), the piston pressing block (331) approaches the substrate (41) and squeezes and fixes the substrate (41).

6. The irradiation test device according to claim 5, characterized in that: The normal pressure chamber (332) is connected to the outside air through an air passage, the piston pressing block (331) is used to separate the sample mounting groove (31) and the normal pressure chamber (332), and the micro air gap (34) extends from one end of the outer wall of the sample mounting seat (3) to the side wall of the piston pressing block (331).

7. The irradiation test device according to claim 6, characterized in that: The piston pressure block (331) includes a piston block (3311) and a pre-compression damping block (3312). The piston block (3311) and the pre-compression damping block (3312) are both slidably mounted in the normal pressure chamber (332). A piston structure is formed between the piston block (3311) and the normal pressure chamber (332). The pre-compression damping block (3312) is arranged on a side of the piston block (3311) corresponding to the substrate (41). The pre-compression damping block (3312) is slidably connected to the piston block (3311) via a guide column (3313). A second elastic component (3314) is installed between the pre-load damping block (3312) and the piston block (3311), and the second elastic component (3314) provides an elastic force for the pre-load damping block (3312) to stay away from the piston block (3311). The micro air gap (34) corresponds to the side wall of the pre-load damping block (3312), and a plurality of groups 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 arranged to penetrate the pre-load damping block (3312), and the pressure needles (3315) are high-hardness metal structures.

8. The irradiation test device according to claim 7, characterized in that: The positioning roller (51) is composed of a plurality of unit rollers (511) and a shaft (513); the plurality of unit rollers (511) are mounted on the same shaft (513); the shaft (513) is rotatably mounted on a leveling support frame (52); a reagent storage cavity (512) is provided on the top of each unit roller (511); the reagent storage cavity (512) is used to place a potassium dichromate granular reagent.

9. The irradiation test device according to claim 8, characterized in that: A piston carrier plate (514) is slidably mounted inside the reagent storage chamber (512), the piston carrier plate (514) is slidably matched with the shaft rod (513), and a net cylinder structure (516) is mounted on the top of the piston carrier plate (514).

10. The irradiation test device according to claim 9, characterized in that: The shaft (513) is a hollow structure, and a connecting hole (515) is provided at a position of the shaft (513) corresponding to the reagent storage chamber (512) located at the bottom of the piston carrier plate (514). The leveling support frame (52) is provided with a built-in pipe (522), and the built-in pipe (522) is rotatably matched with the end of the shaft (513), and the built-in pipe (522) is connected to the inflation and deflation equipment.

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