Crystal disassembly device

Abstract

The present invention discloses a crystal disassembly device, including a base, a bracket and a top block. The base is provided with a receiving space, and a plurality of supporting top rods arranged opposite to each other are provided on both sides of the receiving space, and a portion of the supporting top rods protrudes out of the plane where the base is located; the two ends of the bracket cooperate with the corresponding supporting top rods, and the bracket is provided with a plurality of bracket holes arranged in sequence; the top block is detachably arranged in one of the bracket holes, and the top block protrudes out of the plane where the bracket is located. The present invention can accurately, conveniently and quickly dismantle the radiation detector in the radiation detector module, is not easy to damage the scintillation crystal, greatly reduces the risk of scintillation crystal loss compared with the prior art, and reduces the system maintenance cost.

Description

Technical Field

[0001] The present invention relates to the field of mechanical tools, and more particularly to a crystal disassembly device in the field of high energy detection equipment. Background Art

[0002] In high-energy nuclear detection equipment such as gamma cameras, positron emission tomography (PET) equipment, radiation detectors, and crystal performance detection devices, it is necessary to convert the received high-energy rays into electrical signals through radiation detectors, so as to further obtain information such as energy, position, and time. For example, the PET device can obtain the position information of the positron annihilation event through the radiation detector located at the front end. The radiation detector usually adopts a structure in which a crystal array is coupled with a photoelectric conversion device (such as a photomultiplier tube or a silicon photomultiplier tube), that is, the crystal (also called a scintillating crystal) is first cut into crystal bars of a certain specification, and then a number of crystal bars are arranged according to a certain rule to form a crystal array (a crystal array can also be called a crystal module), and then a number of crystal arrays are coupled with a photoelectric conversion device to form a radiation detector, and a large number of radiation detectors are further arranged into a ring structure.

[0003] For the current emerging application-applicable PET devices, radiation detectors and electronic systems are modularized to facilitate rapid assembly according to different application requirements. Figure 1 As shown, after the radiation detector is modularized, the radiation detector module 10 includes a plurality of radiation detectors 11 and a photoelectric converter 12. The radiation detector 11 includes a plurality of scintillation crystal bars arranged in an array form. The plurality of radiation detectors 11 are further arranged in an array form. A single radiation detector 11 is coupled with a corresponding photoelectric converter 12. The scintillation crystal in the radiation detector 11 receives and deposits γ photons and converts them into visible light. The photoelectric converter 12 further converts the visible light into an electrical signal, and then transmits the corresponding electrical signal to the electronic system output through the first adapter 13.

[0004] Since the radiation detector module 10 includes a plurality of radiation detectors 11, in actual use, when one or some of the radiation detectors 11 are damaged or fail, the damaged radiation detectors 11 need to be removed and replaced with new radiation detectors 11. However, in actual operation, since the radiation detectors are closely arranged, in order to remove a module in the middle, it is necessary to start from the radiation detector at the edge of the nearest row / column; in addition, since the scintillation crystal itself has a fragile property, it is easy to damage the scintillation crystal when disassembling the radiation detector, and additional losses are often generated. It is well known that the manufacturing cost of scintillation crystals used for high-energy ray detection is high, and the additional losses generated during the disassembly process will cause huge maintenance costs. Therefore, it is necessary to provide a safe, fast and accurate crystal disassembly tool to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a crystal disassembly device, so as to solve the problem of easy loss when disassembling the radiation detector in the prior art.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to provide a crystal disassembly device, which includes: a base, a bracket and a top block, the base is provided with a accommodating gap, and a plurality of supporting top rods arranged opposite to each other are provided on both sides of the accommodating gap, and a portion of the supporting top rods protrudes out of the plane where the base is located; the two ends of the bracket are matched with the corresponding supporting top rods, and the bracket is provided with a plurality of bracket holes arranged in sequence; the top block is detachably arranged in one of the bracket holes, and the top block protrudes out of the plane where the bracket is located.

[0007] According to an embodiment of the present invention, the base is a frame structure, and the internal gap of the frame forms the accommodating gap.

[0008] According to one embodiment of the present invention, the shape of the accommodating gap matches the outer shape of the radiation detection module to be disassembled.

[0009] According to one embodiment of the present invention, the supporting top rod is a screw rod, a base threaded hole is provided on the base, the screw rod and the base threaded hole are matched through a threaded pair, and the screw rod can be driven to slide along its axial direction and touch the bracket to move by adjusting the position of the screw rod in the threaded pair.

[0010] According to an embodiment of the present invention, the supporting push rod may be driven by a stepping motor, and the stepping motor may drive the supporting push rod to slide along its own axial direction and contact the bracket to move.

[0011] According to an embodiment of the present invention, the bracket is a strip-shaped flat plate, and the spacing between the bracket holes at both ends of the bracket is the same as the spacing between the corresponding support top rods at both sides of the base.

[0012] According to one embodiment of the present invention, the support top rod is fixed on the base and is integrally formed with the base, and the end of the support top rod is hingedly matched with the bracket hole, so that the hinge point can be used as a fulcrum and the other end of the bracket can be lifted using the lever principle to drive the top block to eject the radiation detector.

[0013] According to an embodiment of the present invention, the bracket holes correspond one-to-one to the radiation detectors to be disassembled.

[0014] According to an embodiment of the present invention, the disassembly device further comprises a positioner, and the positioner is respectively fixed on two sides of the accommodating gap, and the inner wall of the positioner is flush with the inner wall of the accommodating gap.

[0015] According to one embodiment of the present invention, the disassembly device also includes a fixer, which includes: a fixing bracket, a lifting rod and a pressing pad, the fixing bracket is located on one side of the base and extends in a vertical direction, a fixing plate is provided at the top of the fixing bracket, and the fixing plate and the plane where the base are located are both located on the same side of the fixing bracket; the lifting rods are spaced apart from each other and movably arranged on the fixing plate; the pressing pad is arranged at the end of the lifting rod.

[0016] The crystal disassembly device provided by the present invention can accurately, conveniently and quickly dismantle the radiation detector in the radiation detector module without damaging the scintillation crystal in the radiation detector. Compared with the prior art, the risk of scintillation crystal loss is greatly reduced, and the system maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic diagram of a radiation detector module according to the prior art;

[0019] Figure 2 is an exploded schematic diagram of a crystal disassembly device according to an embodiment of the present invention;

[0020] Figure 3 is based on Figure 2A three-dimensional schematic diagram of a support of a crystal disassembly device;

[0021] Figure 4 is based on Figure 2 A schematic diagram of the installation of the radiation detector module and the base;

[0022] Figure 5 is based on Figure 2 A schematic diagram of the installation of a radiation detector module and a base, wherein the radiation detector is not shown;

[0023] Figure 6 is a perspective schematic diagram of a crystal disassembly device according to another embodiment of the present invention;

[0024] Figure 7 is a perspective schematic diagram of a crystal disassembly device according to yet another embodiment of the present invention;

[0025] Figure 8 is based on Figure 7 A three-dimensional schematic diagram of the crystal disassembly device from another angle. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific examples. It should be understood that the following examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0027] It should be noted that when a component / part is referred to as being "set on" another component / part, it may be directly set on the other component / part or there may also be an intermediate component / part. When a component / part is referred to as being "connected / coupled" to another component / part, it may be directly connected / coupled to the other component / part or there may be an intermediate component / part at the same time. The term "connection / coupling" as used herein may include electrical and / or mechanical physical connections / couplings. The term "includes / comprising" as used herein refers to the presence of a feature, step or component / part, but does not exclude the presence or addition of one or more other features, steps or components / parts. The term "and / or" as used herein includes any and all combinations of one or more relevant listed items.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] In addition, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0030] Figure 2 is an exploded schematic diagram of a crystal disassembly device according to an embodiment of the present invention, Figure 2 It can be seen that the crystal disassembly device provided by the present invention includes a base 41, a support pin 42, a bracket 43 and a top block 44, wherein the base 41 is in a frame shape, and the base 41 can be formed by connecting a plurality of profiles of regular geometric shapes to each other, such as being surrounded by plates or columns, or being produced by integral molding; the base 41 has a receiving gap 411 in the middle, and the receiving gap 411 can be formed on the base 41, or can be formed as a through gap; the support pin 42 includes a plurality of support pins 42, and the extension direction of the support pins 42 is parallel to the base The plane where 41 is located is vertical, and the supporting top rods 42 are arranged in pairs at two opposite edges of the base 41. For example, for the frame-shaped base 41, two supporting top rods 42 are respectively arranged on two opposite short sides, and the spacing between the two supporting top rods 42 is the same as the spacing between the two supporting top rods 42 on the opposite sides, and the distance between the two corresponding supporting top rods 42 on the two short sides remains the same; the bracket 43 is in the shape of a long strip, and the two ends of the bracket 43 are matched with the supporting top rods 42; the top block 44 is movably arranged on the bracket 43.

[0031] More specifically, the following methods can be used to connect the support top rod 42 and the base 41: Figure 1 As shown in the figure, the support top rod 42 can be in the form of a screw or a threaded screw, and the base threaded hole 412 on the base 41 and the support top rod 42 are connected in the form of a threaded pair, so that a part of the support top rod 42 can protrude out of the plane where the base 41 is located, and the support top rod 42 can also be telescopically adjusted to the height of the protruding base 41 through the threaded pair; secondly, the support top rod 42 and the base 41 are fixedly combined and integrally formed, and it is only necessary to ensure that the support top rod 42 protrudes out of the plane where the base 41 is located and can be hinged with the bracket 43, so that the hinge point can be used as a fulcrum, and the other end of the bracket 43 can be lifted up by the lever principle to drive the top block 44 to push out the radiation detector 11.

[0032] Figure 3 is based on Figure 2 A perspective schematic diagram of a support 43 of a crystal disassembly device according to an embodiment of the present invention, comprising Figure 3It can be seen that the body 431 of the bracket 43 is formed as a strip-shaped rectangular plate, and bracket holes 432 are formed at both ends of the bracket body 431. The bracket body 431 is provided with a plurality of positioning grooves / holes 433 along the extension direction of its own length. The shape of the positioning grooves / holes 433 matches the shape of the top block 44 so that the top block 44 can be installed and fixed in the positioning grooves / holes 433. The top block 44 is formed into a substantially rectangular ring, and the top block 44 can also be formed into other shapes, such as a rectangle, a triangle, etc. The upper surface of the top block 44 contacts the photoelectric converter 12 when in use. In order to reduce the contact pressure, the upper surface area of ​​the top block 44 should not be too low. It should be noted by those skilled in the art that the spacing between the two bracket holes 432 is the same as the distance between the two corresponding support pins 42 on the corresponding two sides of the base 41, and the shape of the bracket hole 432 matches the shape of the top of the support pin 42 so that the pin 42 can be smoothly installed and fixed on the support pin 42. Those skilled in the art should also note that the bracket body 431 should preferably be made of a material with high rigidity and not easy to deform, and the greater the rigidity of the bracket body 431 itself, the better the effect during disassembly; the width w of the bracket body 431 should be smaller than the gap width between the two first conversion joints 13 corresponding to the same radiation detector 11 on the radiation detector module 10, so as to facilitate the insertion of the bracket 43 into the gap; the distance between adjacent positioning grooves / holes 433 corresponds to the radiation detector 11 respectively, so that each positioning groove / hole 433 is opposite to each radiation detector 11, so as to facilitate the ejection operation and ensure that the force direction of the radiation detector 11 is vertically upward when ejected.

[0033] Figure 4 and Figure 5 All based on Figure 2 The radiation detector module 10 and the base 41 are installed schematically, wherein Figure 5 The radiation detector 11 is not shown. Figure 4 Combination Figure 5It can be seen that the radiation detector module 10 further includes an adapter plate 20 and a connecting plate 30. The sizes of the adapter plate 20 and the connecting plate 30 bodies correspond to the radiation detector module 10. The adapter plate 20 is provided with a second conversion joint 21 corresponding to the first conversion joint 13. The second conversion joint 21 is connected to the first conversion joint 13 to realize the transmission of the electrical signal to the back-end processor. There is a vertical and horizontal extension of the second conversion joint 21. When the second conversion joint 21 is connected to the first conversion joint 13, the conversion gap g is relatively narrow due to the large number of conversion joints and the large area occupied. When the conversion joint is connected, it is relatively firm, which provides greater difficulty for the disassembly of the radiation detector 11. The operating tool can only be inserted into the conversion gap g to work. The connecting plate 30 is further fixed to the adapter plate 20. The connecting plate 30 fixes the adapter plate and the radiation detector 11 into a radiation detection module, so as to facilitate modular assembly. A connecting component is provided at the bottom of the connecting plate 30 to conveniently fix the radiation detection module on the PET rack equipment. Therefore, according to the specific configuration and shape of the radiation detection module, corresponding crystal disassembly and assembly tools are required to match it.

[0034] When removing the radiation detector, the support top rod 42 needs to be screwed into the threaded hole 412 of the base first, and the top of the support top rod 42 is exposed from the base 41. Then, the radiation detection module needs to be placed in the accommodating gap 411 of the base 41, so the shape of the accommodating gap 411 should match the shape of the radiation detector module 10 and the radiation detection module, and when the radiation detection module is placed in the accommodating gap 411, the surface of the adapter plate 20 should be flush with the upper surface of the base 41, so as to facilitate the insertion of the bracket 43 into the adapter gap g. Furthermore, the top block 44 is placed into the positioning groove / hole 433 corresponding to the radiation detector 11 to be removed, and the top block 44 and the bracket 43 are inserted into the accommodating gap 411 together, and then the top of the supporting top rod 42 is fixed to the bracket holes 432 at both ends of the top block 44, and the supporting top rods 42 on both sides are slowly screwed upward until the top block 44 contacts the photoelectric converter 12. At this time, the radiation detection module can be pressed from above by hand, and the supporting top rod 42 is further slowly screwed upward until the corresponding radiation detector 11 is detached from the adapter plate 20. It is worth noting that any radiation detector 11 in the radiation detection module cannot be directly removed as needed. If the radiation detector located on the inside needs to be removed, it is necessary to start from the radiation detector at the edge and remove it in sequence. For example, if it is necessary to remove Figure 2 If there is a damaged radiation detector b in the middle, it is necessary to remove the radiation detector a at the edge first, and then the radiation detector b can be removed after the radiation detector a is removed.

[0035] According to another embodiment of the present invention, the movement of the support pin 42 can be driven by a stepper motor (not shown in the figure), and the stepper motor can drive the support pin 42 to slide along its axial direction and contact the bracket 43 to move.

[0036] Figure 6 is a perspective schematic diagram of a crystal disassembly device according to another embodiment of the present invention. Figure 6 In the embodiment of the present invention, the same or similar components are indicated by adding a "'" to the reference numeral. Figure 6 It can be known that the crystal disassembly device provided by the present invention can also include a locator 45', which is fixed to the base 41' along the two long sides of the base 41', and the inner side of the locator 45' is flush with the inner side of the base 41', so that when radiation detection modules of different heights are placed in the accommodating gap, the locator 45' can contact the adapter plate 20' and the connecting plate 30' to keep the radiation detection module from moving. In this embodiment, the shape, arrangement and connection method of other components can be the same as those in the previous embodiment, and will not be repeated here.

[0037] Figure 7 and Figure 8 is a perspective schematic diagram of a crystal disassembly device according to another embodiment of the present invention, Figure 7 and Figure 8 In the embodiment of the present invention, the same or similar components are marked by adding a "" to the reference numeral. Figure 7 and Figure 8It can be known that the crystal disassembly device provided by the present invention may also include a fixture 46", which includes a fixed bracket 461", a lifting rod 463" and a pressing pad 464", wherein the fixed bracket 461" is fixed to one of the long sides of the base 41", and the fixed bracket 461" extends in the vertical direction; a fixing plate 462" is arranged on the top of the fixed bracket 461", and the plane where the fixing plate 462" is located is perpendicular to the fixing bracket 461", and the plane where the fixing plate 462" is located is located on the same side of the fixing bracket 461" as the plane where the base 41" is located; the lifting rods 463" are arranged on the fixing plate 462" at intervals, and the arrangement direction of the lifting rods 463" corresponds to the arrangement direction of the rows / columns of the radiation detector 11"; a pressing pad 464" is fixed to the end of each lifting rod 463", and the pressing pad 464" can be circular, rectangular, triangular, etc. In this embodiment, the shape, arrangement and connection method of other components can be the same as those in the previous embodiment, and will not be repeated here. When in use, before placing the radiation detection module, the lifting rod 463" and the pressing pad 464" are first moved to a position close to the fixed plate 462". After the radiation detection module is placed in the accommodating gap and the bracket 43" is installed, the lifting rod 463" is moved downward and the pressing pad 464" is made to contact the surface of the radiation detector 11". Therefore, when performing the disassembly operation, the radiation detection module can be pressed by the cooperation of the pressing pad 464" and the fixed bracket 461". The pressing device is used instead of manual pressing, which further avoids the risk of damaging the crystal caused by different manual forces.

[0038] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiments of the present invention can also be changed in various ways. For example, the supporting top rod can be automatically retracted, and the fixed bracket and the lifting rod can be fixed on other devices in a cantilevered form. That is, all simple and equivalent changes and modifications made according to the claims and the contents of the specification of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A crystal disassembly device, characterized in that: The crystal disassembly device comprises: A base, wherein a receiving space is provided on the base, and a plurality of supporting top rods arranged opposite to each other are provided on both sides of the receiving space, and a portion of the supporting top rods protrudes out of the plane where the base is located; A bracket, wherein both ends of the bracket cooperate with the corresponding supporting top rods, bracket holes are formed at both ends of the bracket body, the bracket body is provided with a plurality of positioning grooves or holes along the extension direction of its own length, the distances between adjacent positioning grooves or holes correspond to the radiation detectors respectively, and the width of the bracket body is smaller than the gap width between two first conversion heads corresponding to the same radiation detector on the radiation detector module; and A top block is detachably disposed in one of the positioning grooves or holes, and the top block protrudes out of the plane where the bracket is located.

2. The crystal disassembly device according to claim 1, characterized in that: The base is a frame structure, and the internal space of the frame forms the accommodating space.

3. The crystal disassembly device according to claim 1, characterized in that: The shape of the accommodating gap matches the appearance of the radiation detection module to be disassembled.

4. The crystal disassembly device according to claim 1, characterized in that: The supporting top rod is a screw rod, a base threaded hole is provided on the base, and the screw rod and the base threaded hole are matched through a thread pair.

5. The crystal disassembly device according to claim 1, characterized in that: The supporting push rod is driven by a stepping motor, and the supporting push rod moves along its own axis direction.

6. The crystal disassembly device according to claim 1, characterized in that: The bracket is a strip-shaped flat plate, and the spacing between the bracket holes at both ends of the bracket is the same as the spacing between the corresponding support top rods at both sides of the base.

7. The crystal disassembly device according to claim 1, characterized in that: The supporting top rod is fixed on the base and is formed integrally with the base, and the end of the supporting top rod is hingedly matched with the bracket hole.

8. The crystal disassembly device according to claim 1, characterized in that: The disassembly device further comprises a positioner, and the positioner is respectively fixed on two sides of the accommodating gap, and the inner wall of the positioner is flush with the inner wall of the accommodating gap.

9. The crystal disassembly device according to claim 1, characterized in that: The disassembly device further comprises a fixer, and the fixer comprises: A fixing bracket, the fixing bracket is located at one side of the base and extends in a vertical direction, a fixing plate is provided at the top of the fixing bracket, and the fixing plate and the plane where the base is located are both located on the same side of the fixing bracket; Lifting rods, the lifting rods are spaced apart from each other and movably disposed on the fixing plate; and A pressing pad is arranged at the end of the lifting rod.

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