Test stool for dose measurement of irradiation device of electron accelerator

Abstract

The utility model relates to a test stool for dose measurement of an electron accelerator irradiation device, which comprises a base and a test plane which are connected through a group of symmetrically arranged support frames. 3-5 detachable horizontal wedge-shaped blocks are arranged on the test plane, the adjacent horizontal wedge-shaped blocks are connected end to end, and the horizontal wedge-shaped blocks at the two ends are connected with the test plane through fasteners; a detachable vertical wedge-shaped block is arranged on the supporting frame, and the vertical wedge-shaped block is connected with the supporting frame through fasteners arranged at the upper end and the lower end; and strip-shaped dosimeter placing areas are arranged on the surfaces of the testing plane and the horizontal wedge-shaped block. According to the test requirements of different scanning widths, the length of the test plane can be adjusted by installing or removing the horizontal wedge block, the effective test length of 400-800 mm is formed, the application range is wide, and disassembly, assembly and use are convenient. And meanwhile, the structure is stable, and stability and safety are prominent during use.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation processing, and specifically relates to a test bench for dose measurement of an electron accelerator irradiation device. Background Art

[0002] After decades of development, radiation processing is a mature modern process technology. Compared with sterilization technologies such as high temperature and ethylene oxide, radiation sterilization has the advantages of good penetrability, being able to be carried out at room temperature, having no residue, and being easy to control. It is a green and efficient processing method and has been widely used in aspects such as irradiation sterilization of healthcare products, irradiation preservation of food, and irradiation modification of polymer materials.

[0003] An electron accelerator irradiation device refers to a device that generates, accelerates, and extracts an electron beam for radiation processing. It mainly consists of a beam generation device, a beam acceleration device, a beam extraction and radiation field formation device, and a control system. According to the acceleration principle, it is mainly divided into two categories: DC high-voltage type and high-frequency resonance type. Industrial irradiation often uses high-frequency resonance type electron accelerators, and the generated beam is mostly a pulsed beam. Through electromagnetic scanning technology, the generated pulsed beam is uniformly expanded to cover the irradiation width of the product. At this time, the pulsed beam exits from the scanning window in a fan shape to the surface of the product. Therefore, when the height of the product is different, the width of the pulsed beam expanded by the accelerator irradiation device reaching the surface of the product (hereinafter referred to as the scanning width) is also different. The higher the product height, the smaller the scanning width. When the scanning width cannot cover the width of the product, it will cause the uncovered part of the product not to receive sufficient absorbed dose, thereby affecting the irradiation effect; in addition, the change of the electromagnetic scanning current over time will also affect the scanning width. Therefore, irradiation operators need to regularly carry out tests on the scanning width of the electron accelerator irradiation device to ensure the quality of product irradiation.

[0004] At present, the measurement of the scanning width of an electron accelerator irradiation device mainly uses a triacetate cellulose (CTA) strip dosimeter. At a plane perpendicular to the electron beam axis selected in the radiation field, the CTA strip dosimeter is horizontally placed, and then the absorbed dose of the strip dosimeter is densely measured to form a dose distribution curve within the scanning width, and then the scanning width of the irradiation device is determined. However, during the test, there is a high level of radiation in the irradiation room, and personnel cannot directly reach it. The placement of the triacetate cellulose (CTA) strip dosimeter has become a difficult point in the scanning width test.

[0005] Therefore, there is a need in the market for a test device specifically for the scanning width of an electron accelerator irradiation device to solve the problem of the placement of the triacetate cellulose (CTA) dosimeter during the scanning width test. Summary of the Invention

[0006] The purpose of the present utility model is to provide an improved test bench for dose measurement of an electron accelerator irradiation device. Through structural improvement, the height of the test bench and the length of the test plane can be adjusted to fix different numbers of strip dosimeters, so as to solve the problem of dosimeter placement during the scanning width test, and at the same time ensure the test effect and accuracy.

[0007] In order to achieve the above purpose, the technical solution of the present utility model is: a test bench for dose measurement of an electron accelerator irradiation device, characterized in that: the test bench includes a base and a test plane, and the base and the test plane are connected by a set of symmetrically arranged support frames; there are 3 - 5 detachable horizontal wedge blocks on the test plane, the adjacent horizontal wedge blocks are connected end to end, and the horizontal wedge blocks at both ends are connected to the test plane through snap - fasteners; there are detachable vertical wedge blocks on the support frames, and the vertical wedge blocks are connected to the support frames through snap - fasteners arranged at the upper and lower ends; strip dosimeter placement areas are provided on the surfaces of the test plane and the horizontal wedge blocks.

[0008] Preferably, one end of each horizontal wedge block is provided with a horizontal groove, the other end is provided with a horizontal rib matching the horizontal groove, the test plane is also provided with a plane rib corresponding to the horizontal groove, and a plane groove corresponding to the horizontal rib.

[0009] Furthermore, a first magnet sheet is embedded at the end of the horizontal rib, and a first magnet block corresponding to the first magnet sheet is provided in the plane groove; a second magnet sheet is embedded at the end of the plane rib, and a second magnet block corresponding to the second magnet sheet is provided in the horizontal groove.

[0010] One end of the vertical wedge block is provided with a vertical groove, the other end is provided with a vertical rib, and the support frame is provided with a vertical plane rib corresponding to the vertical groove, and a vertical groove corresponding to the vertical rib.

[0011] Furthermore, a third magnet sheet is embedded at the end of the vertical rib, and a third magnet block corresponding to the third magnet sheet is provided in the vertical groove; a fourth magnet sheet is embedded at the end of the vertical rib, and a fourth magnet block corresponding to the fourth magnet sheet is provided in the vertical groove.

[0012] Furthermore, a number of uniformly distributed raised stabilizing members are arranged in the strip dosimeter placement area, the stabilizing members are dots or strip columns, and the height of the stabilizing members is 0.2 - 0.5 mm. There is a strengthening rod between the two groups of support frames, and a detachable connection block corresponding to the horizontal wedge block is provided on the strengthening rod.

[0013] Even further, the width ratio of the horizontal wedge block to the test plane is 1:2 - 4; the height ratio of the vertical wedge block to the support frame is 1:3 - 6.

[0014] Compared with the prior art, the technical solution of the present utility model includes improvements not only in the overall technical solution but also in many details. Specifically, it has the following beneficial effects:

[0015] 1. In the improvement solution of the present utility model, there are 3 - 5 detachable horizontal wedge blocks on the test plane. The adjacent horizontal wedge blocks are connected end to end, and the horizontal wedge blocks at both ends are connected to the test plane through buckle pieces; there is a detachable vertical wedge block on the support frame, and the vertical wedge block is connected to the support frame through buckle pieces arranged at the upper and lower ends. Therefore, the length of the entire test plane and the height of the support frame can be adjusted, which is suitable for the needs of placing different dosimeters, convenient and fast, and improves the test efficiency;

[0016] 2. In the technical solution of the present utility model, one end of each horizontal wedge block is provided with a horizontal groove, and the other end is provided with a horizontal rib that cooperates with the horizontal groove. The test plane is also provided with a plane rib corresponding to the horizontal groove and a plane groove corresponding to the horizontal rib. This structure is convenient for disassembly and assembly, and can form an effective test length of 400 - 800 mm on the test plane, with a wide range of applications;

[0017] 3. In the structure of the present utility model, a first magnet sheet is embedded at the end of the horizontal rib, and a first magnet block corresponding to the first magnet sheet is arranged in the plane groove; a second magnet sheet is embedded at the end of the plane rib, and a second magnet block corresponding to the second magnet sheet is arranged in the horizontal groove. The structure of the magnet block makes the installation more firm, and the test bench can maintain sufficient stability and safety during the operation of the conveying system;

[0018] 4. The structure of the present utility model is simple, convenient for disassembly and assembly, easy to use, and convenient for popularization and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present utility model.

[0020] Figure 2 It is a schematic diagram of the layout and dispersion structure of the test plane in an embodiment of the present utility model.

[0021] Reference Signs:

[0022] 1 Test plane, 2 Support frame, 3 Base;

[0023] 11 Horizontal wedge block, 12 Plane rib, 13, Plane groove;

[0024] 21 Vertical wedge block;

[0025] 111 Horizontal rib, 112 Horizontal groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0027] The present utility model provides a test bench for dose measurement of an electron accelerator irradiation device. Specifically, refer to Figure 1 , and the difference from the prior art is that the test bench includes a base 3 and a test plane 1, and the base and the test plane are connected by a set of symmetrically arranged support frames 2; there are 3-5 detachable horizontal wedge blocks 11 on the test plane, the adjacent horizontal wedges are connected end to end, and the horizontal wedge blocks at both ends are connected to the test plane through buckle parts, and the length of the test plane can be changed by the combined assembly of the horizontal wedge blocks; there is a detachable vertical wedge block 21 on the support frame, and the vertical wedge block is connected to the support frame through buckle parts arranged at the upper and lower ends; strip dose meter placement areas are provided on the surfaces of the test plane and the horizontal wedge blocks.

[0028] During use, for the test bench for the scanning width of the electron accelerator irradiation device of the present utility model, when performing the scanning width test of the electron beam irradiation device, according to the requirements of the established test plan, set the test width and test height, then fix the cellulose triacetate (CTA) strip dose meter on the test bench, and then transport the entire test bench into the irradiation chamber through the irradiation device conveying system to carry out the scanning width test. For different test requirements of the scanning width, the horizontal wedge blocks can be installed or removed to adjust the length of the test plane, forming an effective test length of 400 mm - 800 mm, with a wide application range and convenient disassembly and use. Embodiment 1

[0029] In this embodiment, the test bench includes a base 3 and a test plane 1, and the base and the test plane are connected by a set of symmetrically arranged support frames 2; there are 3-5 detachable horizontal wedge blocks 11 on the test plane, the adjacent horizontal wedges are connected end to end, and the horizontal wedge blocks at both ends are connected to the test plane through buckle parts; there is a detachable vertical wedge block 21 on the support frame, and the vertical wedge block is connected to the support frame through buckle parts arranged at the upper and lower ends; strip dose meter placement areas are provided on the surfaces of the test plane and the horizontal wedge blocks.

[0030] Preferably, one end of each horizontal wedge block is provided with a horizontal groove 112, the other end is provided with a horizontal rib 111 matching the horizontal groove, the test plane is also provided with a plane rib 12 corresponding to the horizontal groove, and a plane groove 13 corresponding to the horizontal rib. During use, the horizontal wedge blocks can be combined so that the test plane forms an effective test length of 400 - 800 mm to meet different test requirements.

[0031] Furthermore, a first magnet sheet is embedded at the end of the horizontal convex strip, and a first magnet block corresponding to the first magnet sheet is arranged in the planar groove; a second magnet sheet is embedded at the end of the planar convex strip, and a second magnet block corresponding to the second magnet sheet is arranged in the horizontal groove. Through the adsorption between the magnet sheet and the magnet block, the assembled effect is ensured, so that when the test bench is transmitted on the conveying system, the overall structure is firm and stable, ensuring the accuracy and effectiveness of the test.

[0032] Meanwhile, one end of the vertical wedge block is provided with a vertical groove, and the other end is provided with a vertical convex strip. The support frame is provided with a vertical planar convex strip corresponding to the vertical groove and a vertical groove corresponding to the vertical convex strip. Furthermore, a third magnet sheet is embedded at the end of the vertical convex strip, and a third magnet block corresponding to the third magnet sheet is arranged in the vertical groove; a fourth magnet sheet is embedded at the end of the vertical convex strip, and a fourth magnet block corresponding to the fourth magnet sheet is arranged in the vertical groove.

[0033] Furthermore, a number of uniformly distributed convex stabilizing members are arranged in the strip-shaped dosimeter placement area. The stabilizing members are round dots or strip columns, and the height of the stabilizing members is 0.2 - 0.5 mm. The above-mentioned stabilizing members ensure the stable placement of the test dosimeter and are not easy to slide during the test, ensuring the accuracy of the test. A reinforcing member is arranged between the two support frames, and a detachable connection block corresponding to the horizontal wedge block is arranged on the reinforcing member.

[0034] Furthermore, the ratio of the width of the horizontal wedge block to the test plane is 1:2 - 4; the ratio of the height of the vertical wedge block to the support frame is 1:3 - 6, making the applicable range of the entire test bench wider. Embodiment 2

[0035] For the test bench for the scanning width of the electron accelerator irradiation device of the present utility model, when performing the test on the scanning width of the electron beam irradiation device, according to the requirements of the established test plan, by installing or removing the horizontal wedge block 11, the length of the test plane 1 is adjusted to match the requirements for the test width in the test plan; by installing or removing the vertical wedge block 21, the height of the support frame 2 is adjusted to match the requirements for the test height in the test plan; after adjusting the test width and test height of the test bench, the cellulose triacetate (CTA) strip dosimeter is fixed on the test plane 1 by using transparent tape or the like, and then the base 3 is placed on the conveying line of the irradiation device, and the test bench is sent into the irradiation chamber through the transmission of the conveying line to carry out the test on the scanning width.

[0036] Furthermore, when installing the horizontal wedge block or the vertical wedge block, the horizontal convex strip 111 of the horizontal wedge block is inserted into the planar groove 13 of the test plane, and at the same time, the planar convex strip 12 is inserted into the horizontal groove 112 of the wedge block to realize the installation of the horizontal wedge block or the vertical wedge block.

[0037] Specifically, the utility model has the following beneficial effects:

[0038] The test bench is made of solid wood board. Compared with metal materials, it can greatly reduce the influence of the metal surface on the electron beam scattering, thereby improving the test accuracy. Compared with polymer materials, the solid wood material has good radiation resistance.

[0039] The test plane of the test bench includes a detachable horizontal wedge block. By installing or removing the horizontal wedge block, an effective test length of 400 mm - 800 mm can be formed, which can meet the test requirements of different test widths.

[0040] The support frame of the test bench includes a detachable vertical wedge block. By installing or removing the vertical wedge block, an effective test height of 300 mm - 600 mm can be formed, which can meet the test requirements at different heights.

[0041] The utility model has a simple structure, a reasonable layout, is convenient to use, has a wide application range, has great commercial value, and is convenient to promote and utilize.

[0042] The above content is a further detailed description of the utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the utility model is only limited to the above descriptions. For those of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the utility model.

Claims

1. A test bench for measuring the dose of an electron accelerator irradiation device, characterized in that: The test bench includes a base and a test plane, which are connected to each other by a group of symmetrically arranged support frames; 3-5 detachable horizontal wedge blocks are arranged on the test plane, adjacent horizontal wedge blocks are connected end to end, and the horizontal wedge blocks at both ends are connected to the test plane by fasteners; a detachable vertical wedge block is arranged on the support frame, and the vertical wedge block is connected to the support frame by fasteners arranged at the upper and lower ends; strip dosimeter placement areas are arranged on the test plane and the surface of the horizontal wedge block.

2. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 1, characterized in that: One end of each horizontal wedge block is provided with a horizontal groove, and the other end is provided with a horizontal convex strip matched with the horizontal groove. The test plane is also provided with a plane convex strip corresponding to the horizontal groove, and a plane groove corresponding to the horizontal convex strip.

3. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 2, characterized in that: A first magnet sheet is embedded at the end of the horizontal convex strip, and a first magnet block corresponding to the first magnet sheet is arranged in the planar groove; a second magnet sheet is embedded at the end of the planar convex strip, and a second magnet block corresponding to the second magnet sheet is arranged in the horizontal groove.

4. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 1, characterized in that: One end of the vertical wedge block is provided with a vertical groove, and the other end is provided with a vertical convex strip. The support frame is provided with a vertical surface convex strip corresponding to the vertical groove, and a vertical groove corresponding to the vertical convex strip.

5. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 4, characterized in that: A third magnet sheet is embedded in the end of the vertical convex strip, and a third magnet block corresponding to the third magnet sheet is arranged in the vertical groove; a fourth magnet sheet is embedded in the end of the vertical convex strip, and a fourth magnet block corresponding to the fourth magnet sheet is arranged in the vertical groove.

6. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 1, characterized in that: A number of evenly distributed raised stabilizing members are arranged in the strip dosimeter placement area. The stabilizing members are dots or bars, and the height of the stabilizing members is 0.2-0.5 mm.

7. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 1, characterized in that: A reinforcing rod is arranged between the two groups of supporting frames, and a detachable connecting block corresponding to the horizontal wedge block is arranged on the reinforcing rod.

8. A test bench for measuring the dose of an electron accelerator irradiation device according to claim 1, characterized in that: The ratio of the width of the horizontal wedge block to the test plane is 1:2-4; the ratio of the height of the vertical wedge block to the support frame is 1:3-6.

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