Insertable high-precision radiation detection device with large measuring range

Abstract

The present application provides an insertion-type high-precision radiation detection device with a large measurement range, including a radiation component, an assembly component and a detection component; the radiation component is arranged at the first end of the assembly component, and is used to generate and emit at least one beam of detection rays; the assembly component is fixedly connected to the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that the material in the container enters through the hole and fills the middle part, and the material flows out through the hole; the first end of the assembly component and the hole are at least in the container; the detection component is fixedly connected to the second end of the assembly component and is arranged relative to the radiation component, so that the detection ray passes through the middle part, and is received by the detection component after being acted on by the material in the middle part, so as to obtain at least one radiation information, and then at least determine the density or concentration of the material. The present application can expand the measurement range of the radiation detection device, reduce the measurement error of the radiation detection device, and help improve the measurement accuracy of the radiation detection device.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of industrial measurement technology, and in particular to an insertable high-precision radiation detection device with a large measurement range. Background Art

[0002] The working principle of existing radiation detection devices is mostly non-contact, and the radiation generator and detector that constitute the radiation detection device are fixedly installed on both sides of the outer wall of the container to be tested facing each other. The distance between the two is limited by the size of the container, and the detectable density / concentration range is limited by the distance between the two. The greater the distance between the two, the smaller the detectable density / concentration range. When the distance between the two exceeds a certain value, the density / concentration information cannot be reliably detected, which results in the density / concentration information of the medium in the detection container and the density / concentration range being very limited.

[0003] In addition, illustratively, Figure 1 is a working principle diagram of an existing radiation detection device provided by an embodiment of the present invention, such as Figure 1 As shown, during the continuous operation of the existing radiation detection device, under the multiple effects of various environmental stresses, the medium to be tested ( Figure 1 The radiation (not shown) is easy to be deposited and piled up on the inner wall of the container C to be tested to form scars. At this time, the rays emitted by the radiation generator A need to pass through the first air gap c1, the first container wall a1 to be tested, the first scar b1, the medium to be tested, the second scar b2, the second container wall a2 to be tested, and the second air gap c2 in sequence before they can be finally received by the detector B. In particular, after the scar is generated, because its thickness is not fixed and the scar thickness distribution at various locations on the inner wall of the container C to be tested is also non-uniform, therefore, the measurement parameters output by the existing radiation detection device will be far from the actual parameters of the medium to be tested, the measurement error is large, the measurement accuracy is low, and the scars on the inner wall are inconvenient to check and clean. Summary of the invention

[0004] The embodiment of the present invention provides an insertable high-precision radiation detection device with a large measurement range, so as to expand the measurement range of the radiation detection device, reduce the measurement error of the radiation detection device, and help improve the measurement accuracy of the radiation detection device.

[0005] The embodiment of the present invention provides an insertable high-precision radiation detection device with a large measurement range, including a radiation component, an assembly component and a detection component;

[0006] The radiation component is arranged at the first end of the assembly component and is used to generate and emit at least one beam of detection rays;

[0007] The assembly component is fixedly connected to the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that the material in the container enters through the hole and fills the middle part, and the material filled in the middle part flows out through the hole, thereby realizing the real-time dynamic circulation of the material and keeping the state of the material in other parts of the container consistent; the first end part of the assembly component and the hole are at least in the container;

[0008] The detection component is fixedly connected to the second end of the assembly component and is arranged opposite to the radiation component, so that the detection ray passes through the middle part and is received by the detection component after being acted upon by the material filling the middle part, so as to obtain at least one radiation information, and then at least determine the density or concentration of the material based on the radiation information.

[0009] Optionally, the first end portion, the middle portion and the second end portion are in a straight line.

[0010] Optionally, the length of the middle portion is adjusted according to at least one of the density and / or concentration range of the material, the intensity of the radiation component, or the detection capability of the detection component.

[0011] Optionally, the radiation component at least includes a component body and a cover body;

[0012] The component body is fixedly connected to the first end, and a source receiving hole is provided on the component body, and the source receiving hole is used to load the radiation source;

[0013] The cover body is fixedly connected to the component body and encloses a closed space and at least two sealing structures; a shielding layer is provided in the closed space so that the detection rays generated and emitted by the radiation source pass through the middle part and are received by the detection component after being acted upon by the material filled in the middle part; the sealing structure is used to block foreign matter outside the radiation detection device.

[0014] Optionally, the radiation assembly further includes a pressing member and a fastener;

[0015] The inner bottom surface of the component body forms a source bearing column, and the source bearing hole is located on the end surface of the source bearing column close to the cover body;

[0016] The pressing member is fixedly connected to the source column and forms a sealing structure;

[0017] The fastener covers the source-bearing hole and is used to press the radiation source after the pressing member is fixedly connected to the source-bearing column.

[0018] Optionally, the assembly component includes an assembly body, a spacer and at least two positioning members;

[0019] At least two through holes are provided on the assembly body located at the second end and close to the middle part; at least two positioning holes are provided on the outer wall of the isolation member; after at least two positioning members are embedded in the corresponding positioning holes through the corresponding through holes, the isolation member is fixedly connected to the assembly body and forms at least two sealing structures;

[0020] A structural groove is provided on the end surface of the isolating member away from the middle portion.

[0021] Optionally, the assembly component further includes a fixing member;

[0022] The fixing member is fixedly connected to the assembly body and the container respectively;

[0023] A sealing structure is provided at the connection between the fixing member and the assembly body.

[0024] Optionally, the detection assembly includes a detector and a mounting member;

[0025] After the mounting piece is fixed to the detector and connected to the fixing piece through at least two connecting pieces, the detector extends into the second end portion and one end of the detector away from the mounting piece is clamped in the structural groove, thereby allowing the detector and the structural groove to form a sealing structure.

[0026] Optionally, the material of the shielding layer includes at least heavy metal.

[0027] Optionally, the sealing structure comprises at least a sealing groove and at least one sealing member.

[0028] According to the technical solution provided by the embodiment of the present invention, after the assembly component is fixedly connected to the container, the first end and the hole of the assembly component are at least in the container. Since the middle part of the assembly component is a structural cavity and is provided with at least one hole, the material in the container will enter through the hole and fill the middle part. At the same time, the material filled in the middle part can also flow out through the hole, realizing the real-time dynamic circulation of the material and ensuring that the state of the material filling the space part is basically consistent with the state of the material in other parts of the container. In this way, after the radiation component arranged at the first end of the assembly component generates and emits at least one beam of detection rays, because the detection component is fixedly connected to the second end of the assembly component and arranged relative to the radiation component, the detection ray emitted by the radiation component will adaptively pass through the middle part and be received by the detection component after being acted on by the material filled in the middle part. Accordingly, the detection component can obtain at least one radiation information, and then determine at least the density or concentration of the material according to the radiation information.

[0029] It can be seen that, on the one hand, the distance between the radiation component and the detection component in the embodiment of the present invention is related to the length of the middle part, and the length of the middle part can be expanded or reduced by adjusting the length of the middle part according to the density / concentration range of the medium in the user's container when leaving the factory. That is, the distance between the radiation component and the detection component can be adaptively adjusted when leaving the factory without being limited by the size of the container, which is conducive to realizing the effective expansion of the detection range of density / concentration of the radiation detection device. On the other hand, compared with the existing radiation detection device, the radiation emitted by the radiation generator needs to pass through the first air gap, the first container wall to be tested, the first scar, the medium to be tested, the second scar, the second container wall to be tested and the second air gap in sequence before it can be finally received by the detector, and the scar thickness is not fixed, and the scar thickness at various locations on the container wall to be tested is unevenly distributed. In the embodiment of the present invention, after the assembly component is fixedly connected to the container, the detection radiation emitted by the radiation component only needs to pass through the middle part and the material filled in the middle part to be received by the detection component, without penetrating many layers: air layer, container wall layer, and scar layer on the inner wall of the container, thereby reducing the factors affecting the detection radiation, effectively reducing the measurement error of the radiation detection device, and helping to improve the measurement accuracy of the radiation detection device. At the same time, the middle part between the radiation component and the detection component in the embodiment of the present invention can be regularly dismantled and inspected with the naked eye. When scarring occurs, it can be easily disassembled and cleaned to avoid detection errors caused by scarring.

[0030] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 is a working principle diagram of an existing radiation detection device provided by an embodiment of the present invention;

[0033] Figure 2 It is a structural schematic diagram of an insertable high-precision radiation detection device with a large measurement range provided by an embodiment of the present invention;

[0034] Figure 3 It is a schematic structural diagram of another insertable high-precision radiation detection device with a large measurement range provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] Figure 2 Schematic diagram of the structure of an insertable high-precision radiation detection device with a large measurement range provided by an embodiment of the present invention. Figure 2 The plug-in high-precision radiation detection device with a large measuring range includes a radiation component X, an assembly component ( Figure 1 All other components except the radiation component X, the detection component Y and the container Z belong to the assembly component) and the detection component Y.

[0038] The radiation component X is arranged at the first end of the assembly component, and is used to generate and emit at least one beam of detection rays.

[0039] The assembly component is fixedly connected to the container Z; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that the material in the container Z enters through the hole and fills the middle part, and the material filled in the middle part flows out through the hole, thereby realizing the real-time dynamic circulation of the material and keeping it consistent with the state of the material in other parts of the container Z; the first end part and the hole of the assembly component are at least in the container Z.

[0040] The detection component Y is fixedly connected to the second end of the assembly component and is arranged opposite to the radiation component X, so that the detection ray passes through the middle part and is received by the detection component Y after being acted on by the material filled in the middle part to obtain at least one radiation information, and then at least the density or concentration of the material is determined based on the radiation information.

[0041] The detection ray may be a gamma ray; accordingly, the radiation component X may be a gamma ray emitter, and the detection component Y may be a gamma ray receiver.

[0042] It can be known that the container Z can be a tank body and a warehouse body capable of carrying materials, a pipeline for conveying materials, or other similar instruments or components; taking the production equipment in the industrial field as an example, the container Z in the embodiment of the present invention can be but is not limited to the reaction tank, material conveying pipeline and other components in the production equipment.

[0043] In addition, the state of the material may be liquid, solid-liquid mixed state, etc. The radiation information may refer to the energy spectrum information obtained by analyzing the attenuated rays received by the detection component Y (i.e., the detection rays that pass through the middle part and are acted upon by the material filled in the middle part). Exemplarily, the radiation information may include, but is not limited to, the energy spectrum waveform of the attenuated rays, the number of accumulated counts of each channel address, the sum of the number of accumulated counts of each channel address, the occurrence time of each count of each channel address, the time frequency of the counts of each channel address, and / or the time interval of the counts of each channel address.

[0044] It can be understood that after the assembly component is fixedly connected to the container Z, the first end and the hole of the assembly component are at least in the container Z. Since the middle part of the assembly component is a structural cavity and is provided with at least one hole, the material in the container Z will enter through the hole and fill the middle part. At the same time, the material filled in the middle part can also flow out through the hole, which not only realizes the real-time dynamic circulation of the material in the middle part, but also makes the state of the material filling the space part (for example, the composition, density, concentration, etc. of the material) basically consistent with the state of the material in other parts of the container Z. In this way, the radiation component X arranged at the first end of the assembly component generates and emits at least one beam of detection rays. Because the detection component Y is fixedly connected to the second end of the assembly component and arranged opposite to the radiation component X, the detection rays emitted by the radiation component X will adaptively pass through the middle part and be received by the detection component Y after being acted on by the material filled in the middle part. Based on this, the detection component Y can obtain at least one radiation information, and then at least determine the density or concentration of the material according to the radiation information.

[0045] To sum up, on the one hand, the distance between the radiation component and the detection component in the embodiment of the present invention is related to the length of the middle part, and the length of the middle part can be expanded or reduced by adjusting the length of the middle part according to the density / concentration range of the medium in the user's container when leaving the factory. That is, the distance between the radiation component and the detection component can be adaptively adjusted when leaving the factory without being limited by the size of the container, which is conducive to the effective expansion of the detection range of density / concentration of the radiation detection device. On the other hand, compared with the existing radiation detection device, the radiation emitted by the radiation generator needs to pass through the first air gap, the first container wall to be tested, the first scar, the medium to be tested, the second scar, the second container wall to be tested and the second air gap in sequence before it can be finally received by the detector, and the scar thickness is not fixed, and the scar thickness at various locations on the container wall to be tested is unevenly distributed. In the embodiment of the present invention, after the assembly component is fixedly connected to the container, the detection radiation emitted by the radiation component only needs to pass through the middle part and the material filled in the middle part to be received by the detection component, without penetrating many layers: air layer, container wall layer, and scar layer on the inner wall of the container, thereby reducing the factors affecting the detection radiation, effectively reducing the measurement error of the radiation detection device, and helping to improve the measurement accuracy of the radiation detection device. At the same time, the middle part between the radiation component and the detection component in the embodiment of the present invention can be regularly dismantled and inspected with the naked eye. When scarring occurs, it can be easily disassembled and cleaned to avoid detection errors caused by scarring.

[0046] It should be noted that, in an implementation provided by an embodiment of the present invention, optionally, the first end, the middle portion, and the second end are in a straight line; the length of the middle portion is adaptively adjusted according to at least one of the density and / or concentration range of the material, the strength of the radiation component, or the detection capability of the detection component. Adaptively, when the distance of the middle portion is constant, the stronger the strength of the radiation component (for example, it may refer to the intensity of the detection ray, the intensity of the detection ray emitted by the radiation component, etc.) and / or the detection capability of the detection component (for example, it may refer to the ability of the detection component to identify the attenuated ray), the stronger the ability of the radiation detection device to obtain radiation information based on the attenuated ray, and the more accurate the parameters such as material density and concentration determined based on the radiation information. When the material density and concentration are too large, and the strength of the configured radiation component and / or the detection capability of the detection component are insufficient to reliably detect and obtain material density, concentration and other parameters, the radiation detection device can adaptively reduce the distance of the middle part when leaving the factory to shorten the distance between the radiation component and the detection component, thereby improving the ability of the radiation detection device to obtain radiation information based on the attenuated rays; when the material density and concentration are too small, and the strength of the configured radiation component and / or the detection capability of the detection component cannot reliably detect the changes in material density and concentration based on the changes in density and concentration, that is, the detection resolution cannot be achieved, the radiation detection device can adaptively increase the length of the middle part when leaving the factory to improve the change in radiation information obtained by the radiation detection device based on the attenuated rays, thereby improving the detection accuracy of material density, concentration and other parameters.

[0047] On the basis of the above-mentioned embodiments, since the radiation detection device involved in the embodiments of the present invention needs to be inserted into the container for measurement, and the radiation detection device will be in direct contact with the material, in order to achieve the sealing and leak-proofing and stable operation of the radiation detection device, the inventor has made targeted designs for the component structures of the radiation detection device at the structural level, which are specifically described below, but do not constitute a limitation to the embodiments of the present invention.

[0048] In an implementation manner provided in an embodiment of the present invention, Figure 3 Schematic diagram of another structure of an insertion-type high-precision radiation detection device with a large measurement range provided by an embodiment of the present invention. Figure 3 Optionally, the radiation component includes at least a component body 110 and a cover body 111; the component body 110 is fixedly connected to the first end 112, and a source receiving hole is provided on the component body 110, and the source receiving hole is used to load the radiation source 114; the cover body 111 is fixedly connected to the component body 110, and encloses a closed space and at least two sealing structures; a shielding layer is provided in the closed space, so that the detection rays generated and emitted by the radiation source 114 pass through the middle part 113, and are received by the detection component after being acted upon by the material filled in the middle part 113; the sealing structure is used to block foreign matter outside the radiation detection device.

[0049] The purpose of setting the shielding layer is to prevent the radiation source 114 from emitting from other directions, but only emitting from the straight line direction where the first end, the middle part and the second end are located, and being received by the detection component, thereby reducing environmental pollution caused to the outside world.

[0050] Optionally, the radiation component also includes a clamping piece 116 and a fastener 115; a source-bearing column is formed on the inner bottom surface of the component body 110, and a source-bearing hole is located on the end surface of the source-bearing column close to the cover body 111; the clamping piece 116 is fixedly connected to the source-bearing column and forms a sealing structure; the fastener 115 covers the source-bearing hole and is used to clamp the radiation source 114 after the clamping piece 116 is fixedly connected to the source-bearing column.

[0051] Optionally, the sealing structure includes at least a sealing groove and at least one sealing member.

[0052] The sealing member may be a sealing ring, and its material may be silicone, nylon, engineering plastic, etc. The component body 110 may be connected to the first end 112 by welding, riveting, etc. Figure 3 The example shows that the component body 110 is fixedly connected to the first end 112 by threads. The component body 110, the cover 111 and the pressing member 116 can be made of stainless steel, aluminum alloy, etc., and the fastener 115 can be made of rubber, etc. Foreign matter outside the radiation detection device can refer to materials, moisture, etc.

[0053] In practical applications, the radiation source 114 can be replaced. For example, the user can record the installation and use time of the radiation source 114 and replace the radiation source 114 regularly in combination with the radiation characteristics of the radiation source 114. Specifically, the type of the radiation source 114 can be Na 22 , CS 137 or CO 60 , emits gamma rays (i.e., the detected rays are gamma rays), Na 22 , CS 137 , CO 60 The activity of can be the exemption level, Na 22 , CS 137 , CO 60 All have half-lives (radiation characteristics of each type of radioactive source), so it can be recorded by Na 22 , CS 137 , CO 60 Installation and use time, in Na 22 , CS 137 , CO 60It is replaced when the half-life is reached. It is understandable that the exempted radiation source 114 is safe to use and will not cause harm to the user's body, so the user can use it with confidence; at the same time, the greater the activity of the radiation source 114, the more source rays are generated per second, the more detection rays are emitted by the radiation component, and the greater the intensity of the emitted detection rays.

[0054] Continue to see Figure 3 Specifically, the component body 110 is a single-side opening structure, the opening of the component body 110 is located on the side of the component body 110 away from the second end 118, and a first limiting portion is provided on the side of the opening of the component body 110. An external thread is provided on the outer wall of the component body 110, an internal thread is provided on the inner wall of the component body 110, and a screw thread is provided on the inner wall of the first end 112. At least two tooling holes are provided on the first limiting portion. During the assembly process of the radiation detection device, the user can insert the assembly tool into the tooling hole and continuously rotate the assembly tool, thereby driving the external thread to be screwed into the screw thread. Finally, under the mutual cooperation between the external thread and the screw thread and the limiting action of the first limiting portion, the component body 110 is screwed to the first preset position of the first end 112.

[0055] In addition, the clamping member 116 is also a single-side opening structure, the opening of the clamping member 116 is located on the side of the clamping member 116 away from the source hole, the inner side wall of the opening side of the clamping member 116 is provided with a first sealing groove, the first sealing member is arranged in the first sealing groove, the inner side wall of the clamping member 116 is also provided with a clamping adapter thread, and the inner bottom of the clamping member 116 is provided with a limit hole. The outer side wall of the source column is provided with a clamping thread. After the component body 110 is fixedly connected to the first end 112, the user can place the radiation source 114 in the source hole, and arrange the fastener 115 on the end face of the source column close to the opening side of the component body 110, covering the source hole. Afterwards, the pressing piece 116 is placed close to one end of the source column with the source hole and rotated, and the pressing thread and the pressing adapter thread cooperate with each other, and the pressing piece 116 is fixedly connected to the source column, and the fastener 115 is inserted into the limiting hole and presses the radiation source 114. At this time, the first sealing member is located in the first sealed space surrounded by the first sealing groove and the component body 110. It can be understood that after the fastener 115 presses the radiation source 114, it can also play a role in blocking foreign matter outside the radiation detection device to a certain extent.

[0056] like Figure 3As shown, the cover 111 is also a single-side opening structure, and the opening of the cover 111 is located on the side of the cover 111 close to the pressing member 116. Along the direction from the first end 112 to the middle part 113, the outer wall of the cover 111 is provided with a second limiting portion, a second sealing groove, a tightening thread, a third limiting portion and a third sealing groove in sequence. The second sealing member is arranged in the second sealing groove, and the third sealing member is arranged in the third sealing groove. After the pressing member 116 is fixedly connected to the source column, the user can fill an appropriate amount of shielding layer to the bottom of the component body 110 and cover the pressing member 116. Optionally, the material of the shielding layer includes at least heavy metal, for example, lead. The user places the opening side of the cover 111 against the opening side of the component body 110 and rotates it. Under the mutual cooperation of the tightening thread and the internal thread and the limiting action of the second limiting portion and the third limiting portion, the cover 111 is fixed at the second preset position on the opening side of the component body 110. At this time, the second seal is located in the second sealed space surrounded by the second seal groove and the component body 110, the third seal is located in the third sealed space surrounded by the third seal groove and the component body 110, the cover 111, the component body 110 and the pressing member 116 adaptively surround a closed space, and the appropriate amount of shielding layer filled by the user is sealed in the closed space. Since the shielding layer has a good radiation shielding effect, the source radiation generated by the radiation source 114 will only be directed along the direction of the first end 112 to the middle part 113, pass through the source column and shoot from the outer bottom surface of the component body 110 to the middle part 113, that is, the radiation component emits at least one beam of detection radiation.

[0057] It can be seen that the embodiment of the present invention adaptively arranges a multi-sealing structure in the structure of the radiation component (for example, the aforementioned first seal, first sealing groove, second seal, second sealing groove, third seal and third sealing groove together constitute a three-sealing structure) to prevent foreign matter outside the radiation detection device from penetrating into the radiation component, which is beneficial to maintaining the steady-state working environment of the radiation source and helps to improve the measurement accuracy of the radiation detection device.

[0058] In another implementation manner provided in the embodiment of the present invention, see Figure 3 Optionally, the assembly component includes an assembly body, an isolation member 117 and at least two positioning members 119; at least two through holes are provided on the assembly body located at the second end 118 and close to the middle part 113; at least two positioning holes are provided on the outer wall of the isolation member 117; after at least two positioning members 119 are embedded in the corresponding positioning holes through the corresponding through holes, the isolation member 117 is fixedly connected to the assembly body and forms at least two sealing structures; a structural groove is provided on the end surface of the isolation member 117 away from the middle part 113.

[0059] Optionally, the assembly component further includes a fixing member 120; the fixing member 120 is fixedly connected to the assembly body and the container respectively; and a sealing structure is provided at the connection between the fixing member 120 and the assembly body.

[0060] Among them, the material of the isolation member 117 can be stainless steel, aluminum alloy, etc.; the positioning member 119 can be a positioning pin; the fixing member 120 can be a disc-shaped flange, and the connection method between the fixing member 120 and the container can be to install the fixing member 120 on the flange of the container through screws and nuts.

[0061] In addition, the fixing part 120 and the assembly body can be welded together, and a fourth sealing groove can be provided on the outer wall of the assembly body close to the fixing part 120. The fourth seal is arranged in the fourth sealing groove, and the welding part between the assembly body and the fixing part 120 wraps the fourth sealing groove and the fourth seal. In this way, the welding process, the fourth sealing groove and the fourth seal can form double sealing protection at the connection between the fixing part 120 and the assembly body.

[0062] like Figure 3 As shown, specifically, along the direction from the middle portion 113 to the second end portion 118, at least two positioning holes, a fifth sealing groove, and a sixth sealing groove may be sequentially provided on the outer side wall of the isolation member 117. The fifth sealing member is disposed in the fifth sealing groove, and the sixth sealing member is disposed in the sixth sealing groove. A seventh sealing groove is provided on the inner side wall of the structural groove, and the seventh sealing member is disposed in the seventh sealing groove. The number of via holes, positioning holes, and positioning members 119 is equal, and the via holes correspond to the positioning holes one by one. After the radiation component is installed, the user can put the isolation piece 117 into the assembly body from the opening of the second end 118, and slide the isolation piece 117 to a preset position along the direction of the second end 118 pointing to the middle part 113, ensuring that the through holes and the positioning holes correspond one to one, and then embed each positioning piece 119 into the corresponding positioning hole through the corresponding through hole, and the isolation piece 117 is fixedly connected to the assembly body. At this time, the isolation piece 117 isolates the middle part 113 and the second end 118 from each other and forms a cavity with the assembly body, the fifth seal is located in the fifth sealed space surrounded by the fifth sealing groove and the assembly body, and the sixth seal is located in the sixth sealed space surrounded by the sixth sealing groove and the assembly body.

[0063] It can be seen that the embodiment of the present invention also adaptively arranges multiple sealing structures in the structure of the assembly component (for example, the aforementioned fifth seal, fifth sealing groove, sixth seal and sixth sealing groove together constitute two sealing structures, to cooperate with the isolation piece to isolate the middle part and the second end part from each other, which can effectively prevent materials from penetrating into the cavity formed by the isolation piece and the assembly body), so as to prevent foreign matter outside the radiation detection device from penetrating into the radiation detection device, which is beneficial to maintaining the steady-state working environment of the radiation detection device and helps to improve the measurement accuracy of the radiation detection device.

[0064] In another implementation manner provided in the embodiment of the present invention, see Figure 3 Optionally, the detection component includes a detector 121 and a mounting member 122; after the mounting member 122 is fixed to the detector 121 and connected to the fixing member 120 through at least two connecting members, the detector 121 extends into the second end 118 and the end of the detector 121 away from the mounting member 122 is clamped in the structural groove, so that the detector 121 and the structural groove form a sealing structure.

[0065] The mounting member 122 may be a disc-shaped flange, and the detector 121 may be a gamma-ray detector.

[0066] Specifically, Figure 3 As shown, the outer wall of the detector 121 may be provided with a connecting thread, and the mounting member 122 is provided with a threaded portion matching the connecting thread. When assembling the detection assembly, the user can insert the mounting member 122 from the thin end of the detector 121, and rotate the mounting member 122 after the threaded portion of the mounting member 122 contacts the connecting thread of the detector 121. Under the mutual cooperation of the connecting thread and the threaded portion, the mounting member 122 is screwed to the third preset position of the detector 121. After the detection assembly is assembled, the user can fix the mounting member 122 with the fixing member 120 through at least two connecting members (such as screws and nuts), and the end of the detector 121 away from the mounting member 122 (i.e., the aforementioned thin end) extends into the cavity formed by the isolation member 117 and the assembly body, and the end of the detector 121 away from the mounting member 122 is inserted into the structural groove, so that the seventh sealing member is located in the sixth sealing space surrounded by the seventh sealing groove and the detector 121.

[0067] It can be seen from this that the embodiment of the present invention, through the technical means of setting the seventh sealing groove on the inner wall of the structural groove and setting the seventh sealing member in the seventh sealing groove, can enable the detector and the structural groove to form a sealing structure after the detector is extended into the second end and the end of the detector away from the mounting member is clamped in the structural groove, which is beneficial to prevent foreign matter outside the radiation detection device from penetrating into the radiation detection device, maintain the steady-state working environment of the radiation detection device, and help to improve the measurement accuracy of the radiation detection device.

[0068] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0069] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An insertion-type high-precision radiation detection device with a large measurement range, characterized in that: Including radiation components, assembly components and detection components; The radiation component is arranged at the first end of the assembly component and is used to generate and emit at least one beam of detection rays; The assembly component is fixedly connected to the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that the material in the container enters through the hole and fills the middle part, and the material filled in the middle part flows out through the hole, thereby realizing the real-time dynamic circulation of the material and keeping the state of the material in other parts of the container consistent; the first end part of the assembly component and the hole are at least in the container; The detection component is fixedly connected to the second end of the assembly component and is arranged opposite to the radiation component, so that the detection ray passes through the middle part and is received by the detection component after being acted upon by the material filled in the middle part, so as to obtain at least one radiation information, and then at least determine the density or concentration of the material according to the radiation information; The length of the middle portion is adjusted according to at least one of the density and / or concentration range of the material, the intensity of the radiation component, or the detection capability of the detection component; The radiation component at least includes a component body and a cover body; The component body is fixedly connected to the first end, and a source receiving hole is provided on the component body, and the source receiving hole is used to load the radiation source; The cover body is fixedly connected to the component body and encloses a closed space and at least two sealing structures; a shielding layer is provided in the closed space so that the detection rays generated and emitted by the radiation source pass through the middle part and are received by the detection component after being acted upon by the material filled in the middle part; the sealing structure is used to block foreign matter outside the radiation detection device.

2. The insertion-type high-precision radiation detection device with a large measurement range according to claim 1, characterized in that: The first end portion, the middle portion, and the second end portion are in a straight line.

3. The insertion-type high-precision radiation detection device with a large measurement range according to claim 1, characterized in that: The radiation assembly also includes a pressing member and a fastening member; The inner bottom surface of the component body forms a source bearing column, and the source bearing hole is located on the end surface of the source bearing column close to the cover body; The pressing member is fixedly connected to the source column and forms a sealing structure; The fastener covers the source-bearing hole and is used to press the radiation source after the pressing member is fixedly connected to the source-bearing column.

4. The insertion-type high-precision radiation detection device with a large measurement range according to claim 1, characterized in that: The assembly component comprises an assembly body, a spacer and at least two positioning members; At least two through holes are provided on the assembly body located at the second end and close to the middle part; at least two positioning holes are provided on the outer wall of the isolation member; after at least two positioning members are embedded in the corresponding positioning holes through the corresponding through holes, the isolation member is fixedly connected to the assembly body and forms at least two sealing structures; A structural groove is provided on the end surface of the isolating member away from the middle portion.

5. The insertion-type high-precision radiation detection device with a large measurement range according to claim 4, characterized in that: The assembly component also includes a fixing member; The fixing member is fixedly connected to the assembly body and the container respectively; A sealing structure is provided at the connection between the fixing member and the assembly body.

6. The insertion-type high-precision radiation detection device with a large measurement range according to claim 5, characterized in that: The detection assembly includes a detector and a mounting part; After the mounting piece is fixed to the detector and connected to the fixing piece through at least two connecting pieces, the detector extends into the second end portion and one end of the detector away from the mounting piece is clamped in the structural groove, thereby allowing the detector and the structural groove to form a sealing structure.

7. The insertion-type high-precision radiation detection device with a large measurement range according to claim 1, characterized in that: The material of the shielding layer at least includes heavy metal.

8. The insertion-type high-precision radiation detection device with a large measurement range according to any one of claims 1 to 7, characterized in that: The sealing structure at least comprises a sealing groove and at least one sealing member.

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