CN117538348A - Plug-in high-precision radiation detection device with large measurement range - Google Patents
Plug-in high-precision radiation detection device with large measurement range Download PDFInfo
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- CN117538348A CN117538348A CN202311531692.8A CN202311531692A CN117538348A CN 117538348 A CN117538348 A CN 117538348A CN 202311531692 A CN202311531692 A CN 202311531692A CN 117538348 A CN117538348 A CN 117538348A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/12—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a flowing fluid or a flowing granular solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1013—Different kinds of radiation or particles electromagnetic radiation gamma
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/601—Specific applications or type of materials density profile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/635—Specific applications or type of materials fluids, granulates
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Abstract
The application provides a plug-in high-precision radiation detection device with a large measurement range, which comprises a radiation assembly, an assembly and a detection assembly; the radiation assembly is arranged at the first end part of the assembly and is used for generating and emitting at least one detection ray; the assembly component is fixedly connected with the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that materials in the container enter the middle part through the hole and then flood the middle part, and the materials flow out through the hole; the first end of the fitting assembly and the aperture are at least within the container; the detection assembly is fixedly connected with the second end part of the assembly and is arranged opposite to the radiation assembly, so that detection rays penetrate through the middle part and are received by the detection assembly after being acted by materials in the middle part, at least one radiation information is obtained, and at least the density or concentration of the materials is determined. The method and the device can expand the measurement range of the radiation detection device, reduce the measurement error of the radiation detection device, and facilitate the improvement of the measurement accuracy of the radiation detection device.
Description
Technical Field
The embodiment of the invention relates to the technical field of industrial measurement, in particular to a plug-in high-precision radiation detection device with a large measurement range.
Background
The working principle of the existing radiation detection device is mostly non-contact, a radiation generator and a detector which form the radiation detection device are fixedly arranged on two sides of the outer wall of a container to be detected in opposite directions, the distance between the radiation generator and the detector is limited by the size of the container, the detectable density/concentration range is limited by the distance between the radiation generator and the detector, the larger the distance between the radiation generator and the detector is, the smaller the detectable density/concentration range is, and when the distance between the radiation generator and the detector exceeds a certain value, the density/concentration information cannot be reliably detected, so that the density/concentration information and the density/concentration range of a medium in the container are limited.
In addition, as shown in fig. 1, in an exemplary operation schematic diagram of an existing radiation detection device provided by the embodiment of the present invention, in a continuous operation process of the existing radiation detection device, under multiple actions of various environmental stresses, a medium to be detected (not shown in fig. 1) is easy to deposit and pile up to form a scar on an inner wall of a container to be detected C, and at this time, rays emitted by the radiation generator a need to pass through the first air gap C1, the first container wall a1 to be detected, the first scar B1, the medium to be detected, the second scar B2, the second container wall a2 to be detected and the second air gap C2 in sequence, so as to be finally received by the detector B. Particularly, after the scab is generated, the thickness of the scab is not fixed, and the distribution of the scab thickness on the inner wall of the container C to be detected is also uneven, so that the measurement parameters output by the conventional radiation detection device are far different from the actual parameters of the medium to be detected, the measurement error is large, the measurement precision is low, and the scab on the inner wall is inconvenient to check and clean.
Disclosure of Invention
The embodiment of the invention provides a plug-in high-precision radiation detection device with a large measurement range, which is used for expanding the measurement range of the radiation detection device, reducing the measurement error of the radiation detection device and being beneficial to improving the measurement precision of the radiation detection device.
The embodiment of the invention provides a plug-in high-precision radiation detection device with a large measurement range, which comprises a radiation assembly, an assembly and a detection assembly;
the radiation assembly is arranged at the first end part of the assembly and is used for generating and emitting at least one detection ray;
the assembly component is fixedly connected with the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that materials in the container enter the middle part through the hole and then flood the middle part, and the materials flood the middle part flow out through the hole, thereby realizing the real-time dynamic circulation of the materials and keeping the state of the materials at other parts in the container consistent; said first end of said fitting assembly and said aperture are at least within a container;
the detection assembly is fixedly connected with the second end part of the assembly and is arranged opposite to the radiation assembly, so that the detection rays penetrate through the middle part and are received by the detection assembly after being filled in the middle part under the action of the materials, at least one radiation message is obtained, and the density or concentration of the materials is at least determined according to the radiation message.
Optionally, the first end portion, the intermediate portion, and the second end portion are in a straight line.
Optionally, the length of the intermediate portion is adjusted according to at least one of the density and/or concentration range of the material, the intensity of the radiation assembly or the detectability of the detection assembly.
Optionally, the radiation assembly at least comprises an assembly body and a cover body;
the assembly main body is fixedly connected with the first end part, and is provided with a source bearing hole for loading a radiation source;
the cover body is fixedly connected with the assembly main body and encloses a closed space and at least two sealing structures; a shielding layer is arranged 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 assembly after being acted by the materials filled in the middle part; the sealing structure is used for blocking foreign matters outside the radiation detection device.
Optionally, the radiation assembly further comprises a hold-down member and a fastener;
the inner bottom surface of the assembly main body forms a source bearing column, and the source bearing hole is positioned on the end surface of the source bearing column, which is close to one side of the cover body;
the compressing piece is fixedly connected with the source bearing column and encloses the sealing structure;
the fastener covers the source bearing hole and is used for pressing the radiation source after the pressing piece is fixedly connected with the source bearing column.
Optionally, the assembly component comprises an assembly body, a spacer and at least two positioning members;
at least two through holes are formed in the assembly main body, which is positioned at the second end part and is close to one side of the middle part; at least two positioning holes are formed in the outer side wall of the isolation piece; after at least two positioning pieces are embedded into the corresponding positioning holes through the corresponding through holes, the isolating pieces are fixedly connected with the assembly main body and enclose at least two sealing structures;
the end face of the isolating piece, which is far away from one side of the middle part, is provided with a structural groove.
Optionally, the assembly component further comprises a fixing member;
the fixing piece is fixedly connected with the assembly main body and the container respectively;
the joint of the fixing piece and the assembly main body is provided with a sealing structure.
Optionally, the detection assembly comprises a detector and a mount;
the mounting piece is fixed with the detector, and after being connected with the fixing piece through at least two connecting pieces, the detector stretches into the second end portion and one end, away from the mounting piece, of the detector is clamped and sleeved in the structure groove, and then the detector and the structure groove enclose a sealing structure.
Optionally, the material of the shielding layer at least includes heavy metal.
Optionally, the sealing structure comprises at least a sealing groove and at least one seal.
According to the technical scheme provided by the embodiment of the invention, after the assembly component is fixedly connected with the container, the first end part and the hole of the assembly component are at least positioned in the container. Because the middle part of the assembly component is a structural cavity and is provided with at least one hole, materials in the container can enter and flood the middle part through the hole, and meanwhile, the materials filled in the middle part can flow out through the hole, so that the real-time dynamic circulation of the materials is realized, and the state of the materials filled in the space part is basically consistent with the state of the materials at other parts in the container. Therefore, after the radiation component arranged at the first end part of the assembly component generates and emits at least one beam of detection rays, the detection rays emitted by the radiation component can adaptively pass through the middle part and are received by the detection component after being acted by the material filled in the middle part because the detection component is fixedly connected with the second end part of the assembly component and is opposite to the radiation component. Accordingly, the detection assembly can obtain at least one radiation message, and further at least determine the density or concentration of the material according to the radiation message.
Therefore, on one hand, in the embodiment of the invention, the distance between the radiation component and the detection component is related to the length of the middle part, and the length of the middle part can be processed and adjusted according to the density/concentration range of the medium in the user container to expand or contract when the user leaves the factory, namely, the distance between the radiation component and the detection component can be adaptively adjusted when leaving the factory, and the distance is not limited by the size of the container, thereby being beneficial to realizing the effective expansion of the detection range of the density/concentration of the radiation detection device. On the other hand, compared with the existing radiation detection device that rays emitted by a radiation generator need to pass through a first air gap, a first container wall to be detected, a first scar, a medium to be detected, a second scar, a second container wall to be detected and a second air gap in sequence and can be finally received by a detector, the thickness of the scar is not fixed, the thickness of the scar on each part of the container wall to be detected is unevenly distributed, and the like, after the assembly component is fixedly connected with the container, detection rays emitted by the radiation component can be received by the detection component only by passing through the middle part and filling materials in the middle part without penetrating a plurality of layers: the air layer, the container wall layer and the scar layer on the inner wall of the container reduce the influence factors on the detection rays, effectively reduce the measurement error of the radiation detection device, and facilitate the improvement of the measurement accuracy of the radiation detection device.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the operation of a conventional radiation detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a large measurement range plug-in high precision radiation detection device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another large measurement range plug-in high precision radiation detection device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 2 is a schematic structural diagram of a large measurement range plug-in high-precision radiation detection device according to an embodiment of the present invention. Referring to fig. 2, the large-measurement-range plug-in high-precision radiation detection device includes a radiation module X, a fitting module (all of the other components in fig. 1 except the radiation module X, the detection module Y, and the container Z belong to the fitting module), and a detection module Y.
And the radiation assembly X is arranged at the first end part of the assembly and is used for generating and emitting at least one detection ray.
The assembly component is fixedly connected with the container Z; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that materials in the container Z enter the middle part through the hole and then flood the middle part, and the materials flood the middle part flow out through the hole, thereby realizing the real-time dynamic circulation of the materials and keeping consistent with the states of the materials at other parts in the container Z; the first end of the fitting assembly and the hole are at least in the container Z.
The detection component Y is fixedly connected with the second end part of the assembly component and is arranged opposite to the radiation component X, so that detection rays penetrate through the middle part and are received by the detection component Y after being filled with materials in the middle part, at least one radiation information is obtained, and the density or concentration of the materials is at least determined according to the radiation information.
Wherein the detection radiation may be gamma radiation; accordingly, the radiation assembly X may be a gamma ray emitter and the detection assembly Y may be a gamma ray receiver.
It is understood that the container Z may be a tank and a bin capable of carrying material, a pipe for transporting material, or other similar apparatus or component; taking production equipment in the industrial field as an example, the container Z in the embodiment of the present invention may be, but is not limited to, a reaction tank, a material conveying pipeline, and other components in the production equipment.
In addition, the state of the material can be liquid state, solid-liquid mixed state and the like. The radiation information may refer to energy spectrum information obtained by analyzing the detection component Y based on the attenuation rays received by the detection component Y (i.e., the detection rays passing through the middle portion and acted upon by the material filled in the middle portion). Illustratively, the radiation information may include, but is not limited to, a spectral waveform including attenuated radiation, a number of accumulated counts for each trace, a time of occurrence of each count for each trace, a time frequency of each trace count, and/or a time interval of each trace count.
It will be appreciated that the first end of the fitting assembly and the aperture are at least within the container Z after the fitting assembly is fixedly connected to the container Z. Because the middle part of the assembly component is a structural cavity and is provided with at least one hole, materials in the container Z can enter and flood the middle part through the hole, and meanwhile, the materials which flood the middle part can flow out through the hole, so that the real-time dynamic circulation of the materials in the middle part is realized, and the material state (such as the composition, density, concentration and the like of the materials) of the flood space part and the material state of other parts in the container Z are basically consistent. Thus, the radiation component X arranged at the first end part of the assembly component generates and emits at least one detection ray, and the detection ray emitted by the radiation component X can pass through the middle part adaptively and is received by the detection component Y after the material filled in the middle part acts on the radiation component X because the detection component Y is fixedly connected with the second end part of the assembly component and is opposite to the radiation component X. Accordingly, the detection component Y can obtain at least one radiation information, and further at least determine the density or concentration of the material according to the radiation information.
In summary, on the one hand, in the embodiment of the present invention, the distance between the radiation component and the detection component is related to the length of the middle portion, and the length of the middle portion may be adjusted to be enlarged or reduced according to the density/concentration range of the medium in the user container when the radiation component and the detection component are shipped, that is, the distance between the radiation component and the detection component may be adaptively adjusted when the radiation component and the detection component are shipped, which is not limited by the size of the container, thereby being beneficial to effectively expanding the detection range of the density/concentration of the radiation detection device. On the other hand, compared with the existing radiation detection device that rays emitted by a radiation generator need to pass through a first air gap, a first container wall to be detected, a first scar, a medium to be detected, a second scar, a second container wall to be detected and a second air gap in sequence and can be finally received by a detector, the thickness of the scar is not fixed, the thickness of the scar on each part of the container wall to be detected is unevenly distributed, and the like, after the assembly component is fixedly connected with the container, detection rays emitted by the radiation component can be received by the detection component only by passing through the middle part and filling materials in the middle part without penetrating a plurality of layers: the air layer, the container wall layer and the scar layer on the inner wall of the container reduce the influence factors on the detection rays, effectively reduce the measurement error of the radiation detection device, and facilitate the improvement of the measurement accuracy of the radiation detection device.
It should be noted that, in one implementation manner provided in the embodiment of the present invention, optionally, the first end portion, the middle portion, and the second end portion are on a straight line; the length of the intermediate portion is adapted according to at least one of the density and/or concentration range of the material, the intensity of the radiation assembly or the detectability of the detection assembly. Adaptively, in the case where the distance between the intermediate portions is constant, the stronger the intensity of the radiation assembly (for example, the intensity of the detected radiation, the intensity of the emitted detected radiation, etc. of the radiation assembly) and/or the detectability of the detection assembly (for example, the ability of the detection assembly to recognize the attenuated radiation) is, the stronger the ability of the radiation detection device to obtain radiation information according to the attenuated radiation is, and the more accurate the parameters such as the density and the concentration of the material determined according to the radiation information are. When the material density and the concentration are too large, the intensity of the configured radiation assembly and/or the detection capability of the detection assembly are insufficient to reliably detect and obtain parameters such as the material density and the concentration, the distance of the middle part of the radiation detection device can be adaptively reduced when the radiation detection device leaves a factory, so that the distance between the radiation assembly and the detection assembly is shortened, and the capability of the radiation detection device for obtaining radiation information according to attenuated rays is improved; when the density and the concentration of the material are too small, the intensity of the configured radiation assembly and/or the detection capability of the detection assembly can not reliably detect the change of the density and the concentration of the material according to the change of the density and the concentration, namely, the detection resolution can not be reached, the length of the middle part of the radiation detection device can be adaptively increased when the radiation detection device leaves a factory, the change amount of radiation information obtained by the radiation detection device according to the attenuation rays is improved, and therefore the detection precision of parameters such as the density and the concentration of the material is improved.
On the basis of the above embodiments, since the radiation detection device according to the embodiments of the present invention needs to be inserted into the container for measurement, and the radiation detection device may be in direct contact with the material, in order to achieve sealing and leakage prevention and stable operation of the radiation detection device, the inventor has specifically designed each component structure of the radiation detection device at a structural level, and the following description is given, but the embodiments of the present invention are not limited thereto.
In one implementation manner provided by the embodiment of the present invention, fig. 3 is a schematic structural diagram of another plug-in high-precision radiation detection device with a large measurement range provided by the embodiment of the present invention. Referring to fig. 3, optionally, the radiation assembly includes at least an assembly body 110 and a cover 111; the assembly body 110 is fixedly connected with the first end 112, and a source bearing hole is formed in the assembly body 110 and used for loading the radiation source 114; the cover 111 is fixedly connected with the assembly main body 110, and encloses a closed space and at least two sealing structures; a shielding layer is arranged 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 assembly after being acted by materials filled in the middle part 113; the sealing structure is used for blocking foreign matters outside the radiation detection device.
The shielding layer is disposed to prevent the radiation emitted by the radiation source 114 from being emitted from other directions, and only emits the radiation from the direction of the straight line where the first end portion, the middle portion and the second end portion are located, so as to be received by the detection assembly, thereby reducing environmental pollution caused to the outside.
Optionally, the radiating assembly further comprises a hold-down 116 and a fastener 115; the inner bottom surface of the assembly main body 110 forms a source bearing column, and the source bearing hole is positioned on the end surface of the source bearing column, which is close to one side of the cover body 111; the compressing piece 116 is fixedly connected with the source bearing column and encloses a sealing structure; the fastener 115 covers the source bearing hole and is used for pressing the radiation source 114 after the pressing piece 116 is fixedly connected with the source bearing column.
Optionally, the sealing structure comprises at least a sealing groove and at least one seal.
The sealing element can be a sealing ring, and the sealing element can be made of silica gel, nylon, engineering plastic and the like. The assembly body 110 may be integrally connected to the first end 112 based on welding, riveting, etc., and fig. 3 illustrates the assembly body 110 fixedly connected to the first end 112 by threads. The material of the assembly body 110, the cover 111 and the pressing member 116 may be stainless steel, aluminum alloy, etc., and the material of the fastening member 115 may be rubber, etc. Foreign matter external to the radiation detection device may refer to materials, moisture, and the like.
In practice, the radiation source 114 may be replaceable. For example, a user may periodically replace the radiation source 114 by recording the time of installation and use of the radiation source 114, in combination with the radioactivity of the radiation source 114 itself. In particular, the radiation source 114 may be of the type Na 22 、CS 137 Or CO 60 Emitting gamma rays (namely, the detection rays are gamma rays), na 22 、CS 137 、CO 60 The activity of (2) can be the level of exemption, na 22 、CS 137 、CO 60 Has half-life (radioactivity characteristic of each type of radioactive source) so that Na can be recorded 22 、CS 137 、CO 60 Is installed and used in Na 22 、CS 137 、CO 60 Replacement is performed when half-life is reached. It will be appreciated that the immunity level radiation source 114 is safe to use, does not harm the user's body, and is not harmful to the userCan be used with ease; meanwhile, the greater the activity of the radiation source 114, the greater the number of source rays generated per second, the greater the number of detection rays emitted by the radiation assembly, and the greater the intensity of the detection rays emitted.
With continued reference to fig. 3, specifically, the assembly body 110 is a one-sided opening structure, the opening of the assembly body 110 is located on a side of the assembly body 110 away from the second end 118, and a first limiting portion is disposed on the opening side of the assembly body 110. External threads are provided on the outer sidewall of the assembly body 110, internal threads are provided on the inner sidewall of the assembly body 110, and a screw thread is provided on the inner sidewall of the first end 112. At least two tooling holes are formed in the first limiting portion, in the assembly process of the radiation detection device, a user can insert the assembly tooling into the tooling holes and continuously rotate the assembly tooling, and then drive the external threads to screw into the screwed threads, and finally, the assembly main body 110 is screwed to a first preset position of the first end portion 112 under the mutual matching of the external threads and the screwed threads and the limiting effect of the first limiting portion.
In addition, compress tightly the piece 116 and also be unilateral open structure, compress tightly the opening of piece 116 and be located the one side that the piece 116 kept away from the source hole that holds, be equipped with first seal groove on the inside wall of piece 116 open side that compresses tightly, first seal sets up promptly in first seal groove, still is equipped with on the inside wall that compresses tightly the piece 116 and compresses tightly the adaptation screw thread, the inboard bottom that compresses tightly the piece 116 is equipped with spacing hole. The outer side wall of the source bearing column is provided with a compression thread. After the module body 110 is fixedly coupled to the first end 112, a user may place the radiation source 114 in the source receiving hole and place the fastener 115 on the end of the source receiving post adjacent to the open side of the module body 110 to cover the source receiving hole. Then, the pressing piece 116 is pressed close to the end of the source bearing column, where the source bearing hole is formed, and rotates, under the mutual cooperation of the pressing thread and the pressing adapting thread, the pressing piece 116 is fixedly connected with the source bearing column, the fastening piece 115 is embedded into the limiting hole and presses the radiation source 114, and at this time, the first sealing piece is located in a first sealing space enclosed by the first sealing groove and the component main body 110. It will be appreciated that the fastener 115, when compressed against the radiation source 114, also acts to some extent to block foreign objects external to the radiation detection device.
As shown in fig. 3, the cover 111 has a single-sided opening structure, and the opening of the cover 111 is located at one side of the cover 111 near the pressing member 116. Along the direction that the first end 112 points to the middle portion 113, a second limiting portion, a second sealing groove, a screwing thread, a third limiting portion and a third sealing groove are sequentially arranged on the outer side wall of the cover body 111. The second seal is disposed in the second seal groove and the third seal is disposed in the third seal groove. After the compressing element 116 is fixedly connected with the source support column, a user can fill a proper amount of shielding layer to the bottom of the assembly main body 110 and cover the compressing element 116. Optionally, the material of the shielding layer at least includes heavy metals, for example, lead. The user abuts the opening side of the cover 111 against the opening side of the assembly main body 110 and rotates, and the cover 111 is fixed at a second preset position on the opening side of the assembly main body 110 under the mutual cooperation of the screwing threads and the internal threads and the limiting action of the second limiting part and the third limiting part. At this time, the second sealing member is located in the second sealing space surrounded by the second sealing groove and the assembly main body 110, the third sealing member is located in the third sealing space surrounded by the third sealing groove and the assembly main body 110, the cover 111, the assembly main body 110 and the pressing member 116 form a closed space in an adaptive manner, and the appropriate shielding layer filled by the user is sealed in the closed space. Because the shielding layer has a good radiation shielding effect, the source radiation generated by the radiation source 114 is directed to the middle portion 113 only along the direction of the first end portion 112, and passes through the source bearing column to be directed to the middle portion 113 from the outer bottom surface of the assembly main body 110, that is, the radiation assembly emits at least one beam of detection radiation.
Therefore, in the embodiment of the invention, a plurality of sealing structures (for example, the first sealing element, the first sealing groove, the second sealing element, the second sealing groove, the third sealing element and the third sealing groove form a three-channel sealing structure together) are adaptively arranged in the structure of the radiation assembly, so that foreign matters outside the radiation detection device are prevented from penetrating into the radiation assembly, the maintenance of the steady-state working environment of the radiation source is facilitated, and the measurement accuracy of the radiation detection device is improved.
In another implementation provided by embodiments of the present invention, with continued reference to fig. 3, optionally the mounting assembly includes a mounting body, a spacer 117, and at least two positioning members 119; at least two through holes are arranged on the assembly main body which is positioned at the second end part 118 and is close to one side of the middle part 113; at least two positioning holes are formed in the outer side wall of the spacer 117; after the at least two positioning pieces 119 are embedded into the corresponding positioning holes through the corresponding through holes, the isolating piece 117 is fixedly connected with the assembly main body and encloses at least two sealing structures; the end surface of the spacer 117 on the side remote from the intermediate portion 113 is provided with a structural groove.
Optionally, the mounting assembly further comprises a fixture 120; the fixing member 120 is fixedly connected with the assembly body and the container, respectively; the connection between the fixing member 120 and the assembly body is provided with a sealing structure.
The material of the spacer 117 may be stainless steel, aluminum alloy, or the like; the positioning member 119 may employ a positioning pin; the fixing member 120 may be a disc-shaped flange, and the fixing member 120 may be connected to the container by mounting the fixing member 120 on the flange of the container by screws and nuts.
In addition, the fixing member 120 and the assembling body may be welded together, and a fourth sealing groove may be formed in an outer sidewall of the assembling body, which is close to one side of the fixing member 120, and the fourth sealing member is disposed in the fourth sealing groove, and a welding portion of the assembling body and the fixing member 120 wraps the fourth sealing groove and the fourth sealing member, so that a double sealing protection may be formed at a connection portion of the fixing member 120 and the assembling body by using the welding process, the fourth sealing groove and the fourth sealing member.
As shown in fig. 3, specifically, at least two positioning holes, a fifth sealing groove, and a sixth sealing groove may be sequentially provided on an outer sidewall of the spacer 117 along a direction in which the intermediate portion 113 is directed toward the second end portion 118. The fifth seal is disposed in the fifth seal groove and the sixth seal is disposed in the sixth seal groove. And a seventh sealing groove is formed in the inner side wall of the structural groove, and a seventh sealing piece is arranged in the seventh sealing groove. The number of the through holes, the positioning holes and the positioning pieces 119 is equal, and the through holes are in one-to-one correspondence with the positioning holes. After the radiation assembly is installed, a user can throw the spacer 117 into the assembly main body from the opening of the second end 118, and slide the spacer 117 to a preset direction along the direction of the second end 118 pointing to the middle portion 113, so as to ensure that the through holes and the positioning holes are in one-to-one correspondence, and then each positioning piece 119 is embedded into the corresponding positioning hole through the corresponding through hole, the spacer 117 is fixedly connected with the assembly main body, at this time, the spacer 117 isolates the middle portion 113 and the second end 118 from each other and forms a cavity with the assembly main body, the fifth sealing piece is located in a fifth sealing space surrounded by the fifth sealing groove and the assembly main body, and the sixth sealing piece is located in a sixth sealing space surrounded by the sixth sealing groove and the assembly main body.
Therefore, in the embodiment of the invention, a plurality of sealing structures (for example, the fifth sealing element, the fifth sealing groove, the sixth sealing element and the sixth sealing groove form two sealing structures together) are arranged in the structure of the assembly component in a same adaptability manner, so that the middle part and the second end part are mutually isolated by matching with the isolating element, materials can be effectively prevented from penetrating into a cavity formed by the isolating element and the assembly main body, foreign matters outside the radiation detection device are prevented from penetrating into the radiation detection device, the maintenance of the steady-state working environment of the radiation detection device is facilitated, and the improvement of the measurement accuracy of the radiation detection device is facilitated.
In yet another implementation provided by embodiments of the present invention, with continued reference to FIG. 3, optionally the detection assembly includes a detector 121 and a mount 122; the mounting member 122 is fixed to the probe 121, and after the probe 121 is connected to the fixing member 120 through at least two connecting members, the probe 121 extends into the second end 118, and an end of the probe 121, which is far away from the mounting member 122, is clamped in the structural groove, so that the probe 121 and the structural groove enclose a sealing structure.
Wherein the mounting member 122 may be a disk-shaped flange and the detector 121 may be a gamma ray detector.
Specifically, as shown in fig. 3, the outer wall of the probe 121 may be provided with a connection screw, and the mounting member 122 is provided with a screw portion matching the connection screw. When the detection assembly is assembled, a user can sleeve the mounting piece 122 from the thin end of the detector 121, rotate the mounting piece 122 after the threaded portion of the mounting piece 122 abuts against the connecting thread of the detector 121, and rotate the mounting piece 122 at a third preset position of the detector 121 under the mutual matching of the connecting thread and the threaded portion. After the detection assembly is assembled, the user can fixedly connect the mounting member 122 and the fixing member 120 through at least two connecting members (such as screws and nuts), one end (i.e., the thin end) of the detector 121, which is far away from the mounting member 122, stretches into the cavity formed by the spacer 117 and the assembly main body, and one end of the detector 121, which is far away from the mounting member 122, is clamped in the structural groove, so that the seventh sealing member is located in a sixth sealing space surrounded by the seventh sealing groove and the detector 121.
Therefore, according to the embodiment of the invention, by the technical means that the seventh sealing groove is formed in the inner side wall of the structural groove and the seventh sealing element is arranged in the seventh sealing groove, after the detector stretches into the second end part and one end of the detector, which is far away from the mounting element, is clamped in the structural groove, the detector and the structural groove form a sealing structure, foreign matters outside the radiation detection device are prevented from penetrating into the radiation detection device, the steady-state working environment of the radiation detection device is maintained, and the measurement accuracy of the radiation detection device is improved.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The plug-in high-precision radiation detection device with a large measurement range is characterized by comprising a radiation assembly, an assembly and a detection assembly;
the radiation assembly is arranged at the first end part of the assembly and is used for generating and emitting at least one detection ray;
the assembly component is fixedly connected with the container; the middle part of the assembly component is a structural cavity and is provided with at least one hole, so that materials in the container enter the middle part through the hole and then flood the middle part, and the materials flood the middle part flow out through the hole, thereby realizing the real-time dynamic circulation of the materials and keeping the state of the materials at other parts in the container consistent; said first end of said fitting assembly and said aperture are at least within a container;
the detection assembly is fixedly connected with the second end part of the assembly and is arranged opposite to the radiation assembly, so that the detection rays penetrate through the middle part and are received by the detection assembly after being filled in the middle part under the action of the materials, at least one radiation message is obtained, and the density or concentration of the materials is at least determined according to the radiation message.
2. The large measurement range insertion type high precision radiation detection device as claimed in claim 1, wherein the first end portion, the intermediate portion and the second end portion are on a straight line.
3. The large measurement range plug-in high precision radiation detection device of claim 1, wherein the length of the intermediate portion is adjusted according to at least one of a density and/or concentration range of the material, an intensity of the radiation assembly, or a detectability of the detection assembly.
4. The large measurement range plug-in high precision radiation detection device of claim 1, wherein the radiation assembly comprises at least an assembly body and a cover;
the assembly main body is fixedly connected with the first end part, and is provided with a source bearing hole for loading a radiation source;
the cover body is fixedly connected with the assembly main body and encloses a closed space and at least two sealing structures; a shielding layer is arranged 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 assembly after being acted by the materials filled in the middle part; the sealing structure is used for blocking foreign matters outside the radiation detection device.
5. The large measurement range plug-in high precision radiation detection device of claim 4, wherein the radiation assembly further comprises a hold-down member and a fastener;
the inner bottom surface of the assembly main body forms a source bearing column, and the source bearing hole is positioned on the end surface of the source bearing column, which is close to one side of the cover body;
the compressing piece is fixedly connected with the source bearing column and encloses the sealing structure;
the fastener covers the source bearing hole and is used for pressing the radiation source after the pressing piece is fixedly connected with the source bearing column.
6. The large measurement range plug-in high precision radiation detection device of claim 1, wherein the mounting assembly comprises a mounting body, a spacer, and at least two positioning members;
at least two through holes are formed in the assembly main body, which is positioned at the second end part and is close to one side of the middle part; at least two positioning holes are formed in the outer side wall of the isolation piece; after at least two positioning pieces are embedded into the corresponding positioning holes through the corresponding through holes, the isolating pieces are fixedly connected with the assembly main body and enclose at least two sealing structures;
the end face of the isolating piece, which is far away from one side of the middle part, is provided with a structural groove.
7. The large measurement range plug-in high precision radiation detection device of claim 6, wherein the mounting assembly further comprises a fixture;
the fixing piece is fixedly connected with the assembly main body and the container respectively;
the joint of the fixing piece and the assembly main body is provided with a sealing structure.
8. The large measurement range plug-in high precision radiation detection device of claim 7, wherein the detection assembly comprises a detector and a mount;
the mounting piece is fixed with the detector, and after being connected with the fixing piece through at least two connecting pieces, the detector stretches into the second end portion and one end, away from the mounting piece, of the detector is clamped and sleeved in the structure groove, and then the detector and the structure groove enclose a sealing structure.
9. The large measurement range plug-in high precision radiation detection device of claim 4, wherein the shielding layer comprises at least heavy metals.
10. The large measurement range plug-in high precision radiation detection device of any one of claims 4-9, wherein the sealing structure comprises at least a seal groove and at least one seal.
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| CN202311531692.8A CN117538348A (en) | 2023-11-17 | 2023-11-17 | Plug-in high-precision radiation detection device with large measurement range |
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| CN202311531692.8A CN117538348A (en) | 2023-11-17 | 2023-11-17 | Plug-in high-precision radiation detection device with large measurement range |
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| CN210128914U (en) * | 2019-05-29 | 2020-03-06 | 云南阿姆德电气工程有限公司 | Measuring device for concentration and density of ore pulp |
| CN114942202A (en) * | 2022-05-16 | 2022-08-26 | 北京锐达仪表有限公司 | High-precision measuring equipment, measuring method and detecting method for radiation monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1291856A (en) * | 1961-05-04 | 1962-04-27 | Socony Mobil Oil Co | Method and apparatus for measuring characteristics of a fluid flowing through a borehole |
| EP0039088A1 (en) * | 1980-04-30 | 1981-11-04 | Fuji Electric Co. Ltd. | Apparatus for determining the concentration of an organic solute in a suspended solid particles containing liquid |
| DD217016A1 (en) * | 1983-08-08 | 1985-01-02 | Freiberg Brennstoffinst | DEVICE FOR THE RADIOMETRIC TIGHT MEASUREMENT OF FLOW-PROPER MEDIA |
| WO1997028477A1 (en) * | 1996-01-31 | 1997-08-07 | The State Of Israel, Atomic Energy Commission, Soreq Nuclear Research Center | Optical flow cell for use in spectral analysis |
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