Irradiation device for columnar irradiation sample

Abstract

The invention discloses an irradiation device for a columnar irradiation sample, and belongs to the technical field of irradiation application, the irradiation device comprises a plurality of split bushings, two metal cushion blocks, an irradiation container and a cover plate, the plurality of split bushings are spliced in the circumferential direction during combination and are combined into a cylinder, and the interior of the cylinder is used for placing the columnar irradiation sample; the two metal cushion blocks are used for being connected with the two ends of the barrel respectively, the metal cushion blocks are provided with positioning ring edges, and the positioning ring edges are connected with the ends of the barrel in a matched and clamped mode, so that the two metal cushion blocks and all the split linings can be connected into a whole; the irradiation container is provided with a test cavity used for accommodating the cylinder and a metal cushion block connected with the cylinder, the cover plate is detachably connected with the irradiation container, and the cover plate is used for sealing the cylinder and the metal cushion block in the test cavity. The columnar irradiation sample can be conveniently taken out, and the columnar irradiation sample can be disassembled into a plurality of independent parts after a test through structural matching and an assembling mode, so that the columnar irradiation sample can be quickly disassembled and taken out from an irradiation device.

Description

Technical Field

[0001] The present application belongs to the field of irradiation application technology, and in particular relates to an irradiation device for columnar irradiated samples. Background Art

[0002] With the continuous development of nuclear energy materials, various new types of nuclear energy materials are constantly emerging. Conducting in-process irradiation tests on these new materials has become a necessary step before their deployment in engineering applications. A key challenge facing in-process irradiation test research is ensuring that the irradiation test environment, such as temperature and pressure, matches or is similar to the service environment. Depending on the research objectives and service status, in-process irradiation samples can be designed in various shapes, with cylindrical shapes being a common feature. For example, samples of black control rod absorber material for pressurized water reactors are typically cylindrical.

[0003] Currently, samples undergoing in-process irradiation assessment are typically placed in irradiation capsules made of stainless steel or zirconium tubes. These capsules are then placed in aluminum boxes and finally placed in irradiation tanks for initial irradiation testing. Due to the presence of radiation, sample placement and removal requires robotic manipulation. After irradiation, absorber samples undergo high radiation doses, requiring high precision. Remotely operating the robotic arm within the hot chamber to cut and remove the sample tubes is challenging and difficult. Any bumps or bumps during the sample removal and removal process can easily damage the sample, impacting the accuracy and requirements of analytical testing. Summary of the Invention

[0004] The present application aims to at least to some extent solve the technical problem that samples are difficult to remove after irradiation testing. To this end, the present application provides an irradiation device for columnar irradiated samples, which facilitates the removal of columnar irradiated samples. Through structural coordination and assembly methods, the irradiation device can be conveniently disassembled into multiple independent components after the test, thereby quickly removing and removing the columnar irradiated samples from the irradiation device.

[0005] The present application provides an irradiation device for a columnar irradiated sample, which is applied to the columnar irradiated sample and includes:

[0006] Multiple petal bushings, when combined, adjacent petal bushings are spliced ​​along the circumferential direction and combined into a cylinder, the interior of the cylinder is used to place the cylindrical irradiation sample;

[0007] Two metal pads are used for detachable connection with the two ends of the cylinder respectively. The metal pads are provided with positioning ring edges, which match and snap-fit ​​with the ends of the cylinder;

[0008] The irradiation container and the cover plate are provided with a test cavity for accommodating the cylinder and the metal pad connected to the cylinder. The cover plate is detachably connected to the irradiation container and is used to seal the cylinder and the metal pad in the test cavity.

[0009] In some embodiments, a step edge is provided on the inner side of the end of the split bushing so that the cylindrical irradiation sample is stuck on the step edge in the cylinder.

[0010] In some embodiments, a fixing pin is further included for inserting into the other end of at least one petal bushing opposite to the step edge, so that the fixing pin and the step edge respectively fix the two ends of the cylindrical irradiation sample.

[0011] In some embodiments, the metal pad is provided with a hollow notch located on a side of the metal pad adjacent to the edge of the positioning ring, forming multiple connections through the interior of the metal pad.

[0012] In some embodiments, the radial size of the test cavity is set to be larger at both ends than in the middle. The two ends of the test cavity are used to respectively accommodate two metal pads, and the middle of the test cavity is used to accommodate the cylinder.

[0013] In some embodiments, a slot is provided at the end of the irradiation container for accommodating the cover plate, and the slot is communicated with the test chamber.

[0014] In some embodiments, a card slot is provided at each end of the irradiation container, the two card slots are respectively connected to the two ends of the test cavity, and the two card slots are both inserted into the cover plate.

[0015] In some embodiments, a metal plate and an elastic member are further included. The metal plate is used to be placed between the metal pad and the cover plate, and the elastic member is used to be placed between the metal plate and the cover plate, so that the metal plate is pressed against the metal pad by the elastic member.

[0016] In some embodiments, a boss is provided on one side of the metal plate, and a notch is provided on the other end of the metal block opposite to the step edge, and the boss matches the notch.

[0017] In some embodiments, the cover is snap-fitted to the irradiation container.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The present application wraps the cylindrical irradiation sample inside with multiple petal bushings to provide protection for the cylindrical irradiation sample. Two metal pads are matched and clamped on both ends of the cylinder composed of multiple petal bushings, so that the cylindrical irradiation sample, multiple petal bushings and two metal pads can be combined into a whole. Apart from this, there are no other constraints and forces between them. At the same time, the cylinder and the metal pads are fixed inside by using the irradiation container, and closed by a cover to form an irradiation test device. During disassembly, the cover plate can be directly opened and the whole can be quickly taken out through the detachable connection between the cover plate and the irradiation container, and then the two metal pads can be removed from the two ends of the cylinder, so that the multiple petal bushings can be loosened and separated, and the columnar irradiation sample automatically falls off, which solves the problem that the existing method can only use a robot to remotely operate the cutting machine to cut the sample tube first, resulting in the sample tube being deformed and difficult to remove or can only be removed destructively. The present application facilitates the removal of the columnar irradiation sample. Through structural coordination and assembly methods, the irradiation device can be conveniently disassembled into multiple independent components after the test, so that the columnar irradiation sample can be quickly removed and removed from the irradiation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments one by one. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other embodiments and drawings can be obtained based on these drawings without inventive work. Various schematic diagrams according to the embodiments of the present application are shown in the drawings. These drawings are not necessarily drawn to scale. For the purpose of clarity, some details are magnified and some details may be omitted.

[0021] Figure 1 A cross-sectional view of an embodiment of a column-type irradiation device for irradiating a sample according to the present invention is shown;

[0022] Figure 2 A schematic diagram of an embodiment of the connection between the cylinder and the metal pad is shown;

[0023] Figure 3 An exploded schematic diagram of an embodiment of the irradiation container, metal plate, elastic member, and cover plate of the present invention is shown;

[0024] Figure 4 A schematic diagram showing an embodiment of the connection between the cylinder, the metal spacer and the metal plate of the present invention is shown;

[0025] Figure numerals: 100, irradiation device; 110, irradiation container; 111, test chamber; 112, slot; 113, L-shaped slot; 120, cylinder; 121, petal bushing; 1211, step edge; 122, fixing pin; 130, metal pad; 131, positioning ring edge; 132, recess; 140, metal plate; 141, boss; 150, elastic member; 160, cover plate; 161, pin; 200, cylindrical irradiation sample. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings corresponding to the specific embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. The following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection. The described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, various different configurations can be arranged and designed. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0028] Please refer to Figure 1 In an embodiment of the present application, an irradiation device for a columnar irradiated sample is provided, which is applied to a columnar irradiated sample 200. The columnar irradiated sample 200 is relatively small in size, generally less than 20 mm in length and less than 10 mm in outer diameter. The irradiation device 100 comprises: a plurality of petal bushings 121, two metal pads 130, an irradiation container 110 and a cover plate 160. The petal bushings 121 are made of metal, such as zirconium alloy, tungsten alloy, etc. The petal bushings 121 are a single structure formed by splitting a cylindrical structure along the axial direction. The plurality of petal bushings 121 When combined, adjacent petal bushings 121 are spliced ​​along the circumferential direction and combined into a cylinder 120, that is, all petal bushings 121 are abutted in sequence along the circumferential direction, and the side edges of the petal bushings 121 are in contact with the side edges of the adjacent petal bushings 121, and the inner sides of all petal bushings 121 are facing the same position. The inner side of the petal bushing 121 refers to the side located inside the cylinder 120 when combined into the cylinder 120, and the outer side refers to the other side opposite to it. The two ends of the cylinder 120 pass through its interior, and the interior of the cylinder 120 is used to place the cylindrical irradiation sample 200.

[0029] Please refer to Figure 2The metal pads 130 are made of stainless steel, tungsten alloy, etc. The two metal pads 130 are used to be detachably connected to the two ends of the cylinder 120. The metal pads 130 are provided with a positioning ring edge 131. The positioning ring edge 131 matches the end of the cylinder 120 and is clamped so that the two metal pads 130 are sleeved on the ends of the cylinder 120 composed of all the petal bushings 121 through the positioning ring edge 131. They are connected as a whole. The metal pads 130 can also be removed from both ends of the cylinder 120; the positioning ring edge 131 is located in the circumference of one end face of the metal pad 130, so that a groove is formed on the end face of the metal pad 130. After all the petal bushings 121 are combined, the end of the cylinder 120 is just matched and snapped into the groove, thus forming a snap connection; the end edge of the petal bushing 121 can be set as a step along the edge, so that the cylinder 120 of all the petal bushings 121 is combined to form a circle of steps, which can just snap into the positioning ring edge 131, thereby realizing the matching and snap connection between the metal pad 130 and multiple petal bushings 121.

[0030] The irradiation container 110 and the cover plate 160 are also made of metal, such as stainless steel, aluminum alloy, etc. The irradiation container 110 has a cylindrical shape. A test cavity 111 is provided inside the irradiation container 110. The test cavity 111 is used to accommodate the cylinder 120 and the metal pad 130 connected to the cylinder 120, that is, the above-mentioned overall structure is placed in the test cavity 111. The cover plate 160 is set to be a circular plate. The cover plate 160 and the irradiation container 110 are detachably connected. The irradiation container 110 has an opening at the end of the test cavity 111, and the cover plate 160 is connected to the opening. The cover plate 160 is used to seal the cylinder 120 and the metal pad 130 in the test cavity 111. The detachable connection adopts a threaded connection, a snap connection or other methods that are easy to disassemble. The columnar irradiation sample 200 is relatively small, and it is necessary to ensure that it is firmly clamped during irradiation and that it is easy to remove after the irradiation test is completed. This application optimizes the coordination between the columnar irradiation sample 200 and the irradiation container 110, which can meet the needs of fixing smaller samples and is easy to remove by a robot, and is suitable for conducting irradiation assessment tests.

[0031] In the prior art, when removing the columnar irradiated sample 200 after the test, it is difficult to cut the sample tube and pour the sample out of the sample tube by remote operation of the manipulator in the hot chamber, and it is not easy to operate. In addition, any bumps during the sample removal and pouring process can easily damage the sample. The present application solves the problem of the difficulty in removing the irradiated test sample. The columnar irradiated sample 200 is wrapped inside by multiple petal bushings 121 to protect the columnar irradiated sample 200. Two metal pads 130 are matched and snapped onto the two ends of the cylinder 120 composed of multiple petal bushings 121. The columnar irradiated sample 200, the multiple petal bushings 121 and the two metal pads 130 can be combined into a whole. Apart from this, there are no other constraints and forces between them. At the same time, the cylinder 120 and the metal pads 130 are fixed inside by the irradiation container 110, and closed by the cover 160 to form an irradiation test device, which avoids the existing manipulator cutting the sample tube and the deformation of the sample tube. In this way, during disassembly, the cover 160 can be directly opened and the above-mentioned whole can be quickly taken out through the detachable connection between the irradiation container 110, and then the two metal pads 130 can be removed from the two ends of the cylinder 120, so that the multiple petal bushings 121 can be loosened and separated, and the columnar irradiation sample 200 can fall off automatically; the present application facilitates the removal of the columnar irradiation sample 200, and through structural coordination and assembly methods, the irradiation device 100 can be conveniently disassembled into multiple independent components after the test, so that the columnar irradiation sample 200 can be quickly dismantled and taken out from the irradiation device 100.

[0032] In some embodiments, a stepped edge 1211 is provided on the inner side of the end of the petal bushing 121. This is formed by a protrusion on the inner side of the petal bushing 121, so that the cylindrical irradiation sample 200 is stuck on the stepped edge 1211 within the cylinder 120. The stepped edge 1211 is provided on the inner side of one or both ends of the petal bushing 121. When all the petal bushings 121 are combined, the stepped edges 1211 can be connected to form a ring. The stepped edges 1211 are used to limit the cylindrical irradiation sample 200 and prevent the cylindrical irradiation sample 200 from falling due to gravity. In some embodiments, there are two petal bushings 121, specifically half of the cylinder structure divided in half along the axial direction. The two petal bushings 121 are spliced ​​together along the two sides to form the above-mentioned cylinder 120.

[0033] In some embodiments, the irradiation device 100 also includes a fixing pin 122 for inserting into the other end of at least one petal bushing 121 opposite to the step edge 1211, so that the fixing pin 122 and the step edge 1211 respectively fix the two ends of the columnar irradiation sample 200. For example, a pin hole is provided on a petal bushing 121, and the pin hole passes through both sides of the petal bushing 121. The pin hole and the step edge 1211 are respectively located at the two ends of the petal bushing 121. The distribution of the pin holes on the cylinder 120 is toward the radial center of the cylinder 120. After the fixing pin 122 is inserted into the pin hole, it can be blocked at the end of the columnar irradiation sample 200. In this way, both ends of the columnar irradiation sample 200 are fixed. The fixing pin 122 is used because the columnar irradiation sample 200 may expand in volume during the test, and a certain space still remains after the fixing pin 122 fixes the columnar irradiation sample 200.

[0034] In some embodiments, the petaled bushing 121 is manufactured using the following process: A zirconium metal bushing with an inner diameter equal to the outer diameter of the cylindrical irradiation sample 200 to be irradiated is first machined, and its total length is the same as the total height of the sample to be placed. The bushing's outer diameter is referenced to the sample's heat generation rate. If the sample's heat generation rate is low, the bushing's outer diameter can be increased to increase the heat generation rate to achieve a specific temperature. Steps are machined at the upper and lower ends of the bushing for securing it to the metal spacer 130 during use. After machining, the bushing is cut axially into two halves. A pin hole is machined at the through-hole end of the bushing for a pin to hold the sample in place.

[0035] In some embodiments, the metal pad 130 is provided with a hollow notch, which is located on the side of the metal pad 130 adjacent to the positioning ring edge 131, and multiple connections are formed through the interior of the metal pad 130. For example, the metal pad 130 is in the shape of a cube, and the four circumferential outer walls of the metal pad 130 are recessed inward, and the recessed areas are connected, thus forming a hollow notch. In this way, only four rod-shaped structures are left in the middle of the metal pad 130 in the circumferential direction, similar to the four sides of the bracket. During the test, heat tends to concentrate in the middle section of the existing columnar irradiation sample 200. The design of the hollow notch helps to increase the heat dissipation of the middle section of the columnar irradiation sample 200, balance the temperature of the entire columnar irradiation sample 200, and solve the problem of uneven axial temperature gradient of the existing sample. At the same time, the hollow notch reduces the heat transfer area, which can reduce the heat transfer to the outside from both ends of the columnar irradiation sample 200, and play a certain insulation effect.

[0036] In some embodiments, the radial dimensions of the test cavity 111 are larger at both ends than in the middle, that is, the radial dimensions at both ends of the test cavity 111 are larger than the radial dimensions in the middle of the test cavity 111. The two ends of the test cavity 111 are used to respectively accommodate two metal pads 130, and the middle of the test cavity 111 is used to accommodate the cylinder 120. In the test cavity 111, the distance between the inner wall of the irradiation container 110 and the metal pad 130 is larger than the distance between the inner wall of the irradiation container 110 and the cylinder 120. When the existing columnar irradiation sample 200 is irradiated with controlled temperature in the pile, a large amount of heat will be extracted from the upper and lower end surfaces of the sample, causing the sample temperature to present a parabolic distribution with high in the middle and low at both ends. Through the above-mentioned setting, the present application changes the structure of the existing test chamber 111, and adds a gas gap at both ends of the columnar irradiation sample 200. Combined with the hollow groove of the metal pad 130, it can reduce the heat dissipation at both ends of the columnar irradiation sample 200 and increase the heat dissipation in the middle section, thereby increasing the temperature at both ends of the columnar irradiation sample 200 and reducing the temperature in the middle section, making the overall temperature distribution of the irradiated sample more uniform; since the samples for the existing in-pile irradiation test are very small and the total heat generation is very low, it is difficult to reach the target irradiation temperature through self-heating. However, through the above-mentioned setting, the columnar irradiation sample 200 can reach the irradiation test temperature through self-heating during the irradiation test.

[0037] In some embodiments, a slot 112 is defined at the end of the irradiation container 110 for receiving a cover plate 160. The slot 112 communicates with the test chamber 111. The slot 112 is formed by an inwardly recessed recess at the end of the irradiation container 110, connecting the test chamber 111 to the outside through the slot 112. The entire structure is first inserted into the test chamber 111 through the slot 112. In some embodiments, a slot 112 is defined at each end of the irradiation container 110, and each slot 112 communicates with the ends of the test chamber 111. Each slot 112 receives a cover plate 160. Thus, the irradiation container 110 is connected to the cover plates 160 at both ends, allowing the cylindrical body 120 to be inserted from both ends. The symmetrical arrangement of the cover plates 160 and the slots 112 at both ends of the irradiation container 110 facilitates use. During operation, the irradiation container 110 can be assembled and used in any fixed direction, simplifying the use process.

[0038] Please refer to Figure 3In some embodiments, the irradiation device 100 further includes a metal plate 140 and an elastic member 150. The metal plate 140 is positioned between the metal spacer 130 and the cover plate 160. The elastic member 150 is positioned between the metal plate 140 and the cover plate 160, so that the metal plate 140 is pressed against the metal spacer 130 by the elastic member 150. The metal plate 140 is plate-shaped, such as a circular plate as shown in the figure, and can be made of aluminum alloy, stainless steel, etc. The elastic member 150 can be a spring, an elastomer, or other elastic device. The spring can be a coil spring, a disc spring, or other types. In this application, a coil spring is used to increase stability. The end with the larger outer diameter abuts the metal plate 140, and the end with the smaller outer diameter abuts the cover plate 160. The elastic member 150 separates the metal plate 140 from the cover plate 160. In conjunction with the metal spacer 130, heat conduction can be effectively reduced, ensuring that the cylindrical irradiated sample 200 meets the specified irradiation temperature index.

[0039] Please refer to Figure 4 In some embodiments, a boss 141 is provided on one side of the metal plate 140, and the other side is a flat surface. The metal pad 130 is provided with a recess 132 at the other end relative to the step edge 1211. The boss 141 matches the recess 132. The boss 141 and the recess 132 can adopt different matching shapes. For example, the boss 141 is cylindrical and the recess 132 is a circular groove. The boss 141 and the recess 132 can position the cylindrical irradiated sample 200 to ensure that the metal pad 130 and the petal bushing 121 are located in the middle of the test cavity 111.

[0040] In some embodiments, the cover plate 160 is made of metal material, such as aluminum alloy, stainless steel, etc. The cover plate 160 is provided with a rivet 161. The rivet 161 is L-shaped and is located at the edge of the cover plate 160. It is formed by the cover plate 160 protruding from the side facing the metal plate 140 and bending outward. The end of the irradiation container 110 is recessed with an L-shaped groove 113 that matches the rivet 161. The L-shaped groove 113 is recessed on the end surface of the end of the irradiation container 110 and extends in the tangential direction. The L-shaped groove 113 is located at the edge of the irradiation container 110. The above arrangement enables the rivet 161 to be placed in a part of the L-shaped groove 113 and then enter the remaining part of the L-shaped groove 113 under the rotation of the cover plate 160. The number of rivets 161 and L-shaped grooves 113 can be determined according to needs, such as two, three, etc. The figure shows a setting of two. In some embodiments, in order to facilitate the rotation and removal of the cover plate 160 , at least two small holes are opened on the cover plate 160 , and the small holes facilitate the gripper of the robot to grip and rotate and take and place the cover plate 160 .

[0041] The use and removal process of the embodiment of the present application is as follows: when in use, the cylindrical irradiation sample 200 is placed in the cylinder 120 formed by the combination of two petal bushings 121, and then a pin is placed to fix it. Then, the metal pads 130 are connected at both ends of the cylinder 120 to complete the sample fixation; the metal plate 140, the spring and the cover plate 160 are assembled at the lower end of the irradiation container 110, and the petal bushing 121 together with the metal pad 130 are fixed on the boss 141 of the metal plate 140, and then another metal plate 140, the spring and the cover plate 160 are assembled at the upper end of the irradiation container 110.

[0042] When taking out the cylindrical irradiated sample 200, the operating robot rotates and removes the cover 160 through the small hole, and the overall structure of the metal plate 140, the spring, the petal bushing 121 and the metal pad 130 are automatically loosened. Then the metal pads 130 at both ends of the petal bushing 121 are removed, and the petal bushing 121 is automatically separated, and the cylindrical irradiated sample 200 is automatically separated from the petal bushing 121.

[0043] In this application, the heat generation rate of the sample and the structural material can be obtained through physical calculation, and the outer diameter of the petal bushing 121 and the card slot 112 inside the irradiation container 110 can be designed according to the heat generation rate; the volume of the card slot 112 at both ends of the irradiation container 110 and the thickness of the metal pad 130 can be increased to reduce axial heat dissipation and make the axial temperature of the sample flat.

[0044] Regarding the specific implementation of this application, it should be noted that:

[0045] In the description of this application, unless otherwise clearly specified and limited, the terms "connect", "fixed", "connected", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral molding; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited; "connected" can be the internal connection of two parts and between two parts, or the spatial connection between the two, and the two are directly or indirectly connected through the part that forms the space. The terms "set", "install", "provided with", "configured", etc. should also be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of this application and simplify the description. They do not indicate or imply that the system or component referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting this application. All directional indications are only used to explain the relative positional relationships, movement conditions, etc. between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0047] In the description of this application, reference to the terms "some embodiments", "optional embodiments", "examples", "specific examples", "optional examples" or "optional embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application, but does not mean that these embodiments illustrate and describe all possible forms of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0048] The present invention has been described in detail above with reference to specific embodiments and exemplary examples. The above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments; the above description cannot be understood as a limitation of the present invention. The technical solutions between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. Although the embodiments of the present application have been shown and described, these embodiments can be subjected to various changes, modifications, substitutions and variations without departing from the principles and purposes of the present application. Ordinary technicians in this field can understand that various other specific changes and combinations of embodiments that do not depart from the essence of the present application are made according to the technical inspirations disclosed in this application, and are still within the scope of protection defined by the claims of the present invention and its equivalent technical solutions.

Claims

1. A column-type irradiation device for irradiating samples, characterized in that: Applicable to cylindrical irradiation samples (200), including: A plurality of petal bushings (121), when combined, adjacent petal bushings (121) are spliced ​​along the circumferential direction and combined into a cylinder (120), the interior of the cylinder (120) being used for placing a columnar irradiation sample (200); Two metal pads (130) are respectively used for detachably connecting with the two ends of the cylinder (120); the metal pads (130) are provided with positioning ring edges (131); the positioning ring edges (131) are matched and clamped with the ends of the cylinder (120); An irradiation container (110) and a cover plate (160), wherein the irradiation container (110) is provided with a test cavity (111) for accommodating the cylinder (120) and the metal pad (130) connected to the cylinder (120), and the cover plate (160) is detachably connected to the irradiation container (110), and the cover plate (160) is used to seal the cylinder (120) and the metal pad (130) in the test cavity (111).

2. The column-type irradiation sample irradiation device according to claim 1, characterized in that: A step edge (1211) is provided on the inner side of the end of the split bushing (121), so that the columnar irradiation sample (200) is clamped on the step edge (1211) in the cylinder (120).

3. The column-type irradiation device for irradiating samples according to claim 2, characterized in that: It also includes a fixing pin 122 for inserting into the other end of at least one of the petal bushings (121) opposite to the step edge (1211), so that the fixing pin 122 and the step edge (1211) respectively fix the two ends of the columnar irradiation sample (200).

4. The column-type irradiation device for irradiating samples according to claim 1, characterized in that: The metal pad (130) is provided with a hollow notch located on the side of the metal pad (130) adjacent to the positioning ring edge (131), and multiple connections are formed through the interior of the metal pad (130).

5. The column-type irradiation device for irradiating samples according to claim 1, characterized in that: The radial dimensions of the test cavity (111) are set to be larger at both ends than in the middle. The two ends of the test cavity (111) are used to respectively accommodate two metal pads (130), and the middle of the test cavity (111) is used to accommodate the cylinder (120).

6. The column-type irradiation device for irradiating samples according to claim 1, characterized in that: A slot (112) is provided at the end of the irradiation container (110) for accommodating the cover plate (160), and the slot (112) is communicated with the test chamber (111).

7. The column-type irradiation device for irradiating samples according to claim 6, characterized in that: The two ends of the irradiation container (110) are respectively provided with the card slots (112), the two card slots (112) are respectively connected to the two ends of the test cavity (111), and the two card slots (112) are both inserted into the cover plate (160).

8. The column-type irradiation device for irradiating samples according to claim 2, characterized in that: The invention also includes a metal plate (140) and an elastic member (150), wherein the metal plate (140) is used to be placed between the metal pad (130) and the cover plate (160), and the elastic member (150) is used to be placed between the metal plate (140) and the cover plate (160), so that the metal plate (140) is pressed against the metal pad (130) by the action of the elastic member (150).

9. The column-type irradiation device for irradiating samples according to claim 8, characterized in that: A boss (141) is provided on one side of the metal plate (140), and a notch (132) is provided on the other end of the metal pad (130) relative to the step edge (1211), and the boss (141) matches the notch (132).

10. The column-type irradiation device for irradiating samples according to any one of claims 1 to 7, characterized in that: The cover plate (160) is snap-connected to the irradiation container (110).

Images