Ray detection device for expanding detection area

Abstract

The utility model provides a ray detection device capable of expanding a detection area. The ray detection device is at least used for detecting medium information in a container. The ray detection device comprises a radiator and at least one detector; the emitter is at least used for generating and emitting at least one beam of detection rays, and the detection rays penetrate through a set detection path to form attenuation rays which are received by the detector; a ray receiving assembly of the detector abuts against or is attached to or adjacent to the container, and at least covers a container penetrating-out area of the corresponding attenuation rays; when the ray detection device comprises a plurality of detectors, the single ray receiving assembly is configured to be shared by the single detector or part of the detector or all the detectors. The device has the beneficial effects that weak attenuated rays can be effectively identified, and the detection sensitivity and accuracy of the ray detection device can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial measurement, and in particular relates to a ray detection device with an expanded detection area. Background Art

[0002] In the industrial field, nuclear radiation detection instruments have many advantages such as non-contact, easy loading and unloading, and stable performance, so they are widely used in complex working conditions such as high temperature and pressure, high dust, and strong corrosion. However, the nuclear radiation detection instruments currently used in the market are limited by factors such as the material, process, and structure of their own components, and at least have the problem of weak detection capabilities, especially for the detection scenario of media in large-sized containers, their detection sensitivity and accuracy are low. Utility Model Content

[0003] In view of this, the utility model aims to provide a ray detection device with an expanded detection area so as to effectively identify weak attenuated rays, thereby improving the detection sensitivity and accuracy of the ray detection device.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A ray detection device with expanded detection area.

[0006] Furthermore, the radiation detection device is at least used to detect medium information in a container; the radiation detection device includes an emitter and at least one detector; the emitter is at least used to generate and emit at least one beam of detection radiation, which forms attenuated radiation after passing through a set detection path and is received by the detector; the radiation receiving component of the detector is abutted, fitted or adjacent to the container, and at least covers the corresponding container exit area of ​​the attenuated radiation; when the radiation detection device includes a plurality of the detectors, a single radiation receiving component is configured to be shared by a single, part or all of the detectors.

[0007] Furthermore, the ray receiving assembly is at least made of a plastic scintillator.

[0008] Furthermore, the detector includes a ray receiving component, a signal conversion component and a processing and control component connected in sequence; the ray receiving component receives the attenuated ray and converts the attenuated ray into a first intermediate signal, and then transmits the first intermediate signal to the signal conversion component; the signal conversion component converts the first intermediate signal into a second intermediate signal, and transmits the second intermediate signal to the processing and control component; the processing and control component performs preprocessing on the second intermediate signal to obtain the radiation information of the corresponding detection path, and determines the medium information under the corresponding detection path according to the radiation information; wherein the radiation information at least includes the amplitude of the second intermediate signal after preprocessing, the time when each second intermediate signal is received recorded by the processing and control component, the time interval between each second intermediate signal recorded by the processing and control component, and the time interval between the second intermediate signals with the same amplitude recorded by the processing and control component.

[0009] Furthermore, the radiation receiving component is integrally formed and completely surrounds a portion of the outer wall of the container; the end surface of the radiation receiving component close to the container is in contact with, abuts against, or is adjacent to the outer wall of the container.

[0010] Furthermore, the radiation receiving component is integrally formed and does not completely surround a portion of the outer wall of the container; the end surface of the radiation receiving component close to the container is in contact with, abuts against, or is adjacent to the outer wall of the container.

[0011] Furthermore, the radiation receiving assembly is not integrally formed and completely surrounds a portion of the outer wall of the container; the radiation receiving assembly includes at least two receiving sub-components, and the areas where each of the receiving sub-components abut, fit or are adjacent to the outer wall of the container are different.

[0012] Furthermore, the radiation receiving assembly is not integrally formed and does not fully surround a portion of the outer wall of the container; the radiation receiving assembly includes at least two receiving sub-components, and the areas where each of the receiving sub-components abut, fit or are adjacent to the outer wall of the container are different.

[0013] Furthermore, the emitter is at least the medium in the container.

[0014] Furthermore, the radiator at least includes a radiation source; the radiation source is installed inside the container, or the radiation source is installed on the outer wall of the container.

[0015] Furthermore, when the radiation detection device includes a plurality of the detectors, a single, a part of or all of the detectors share a processing control component.

[0016] Compared with the prior art, the radiation detection device with expanded detection area described in the utility model has the following beneficial effects:

[0017] At least one beam of detection rays is generated and emitted by the radiator, so that the corresponding detection rays pass through the corresponding detection path to form attenuated rays and are received by the corresponding detector; the detector determines the medium information in the corresponding detection path based on the attenuated rays, thereby realizing radiation monitoring of the medium in the container; and, in view of the problem of weak detection capability of existing nuclear radiation detection instruments, the present application increases the detection area of ​​the detector and improves the detection capability of the detector by providing a ray receiving component that is in contact with the container and at least covers the container exit area of ​​the corresponding attenuated rays; even if the ray detection device is applied to the detection scenario of large-size containers with a long detection path, the attenuated rays formed after the detection rays pass through the long detection path are too weak, and the detector can effectively identify the weak attenuated rays, which is beneficial to improving the sensitivity and accuracy of the ray detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment;

[0020] Figure 2 This is a side view of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment;

[0021] Figure 3 This is a top view of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment;

[0022] Figure 4 It is a structural schematic diagram of a ray detection device provided by this practical embodiment;

[0023] Figure 5 It is a structural schematic diagram of a detector provided by this practical embodiment;

[0024] Figure 6 This is a schematic diagram of a setting method of a ray receiving component provided in this practical embodiment;

[0025] Figure 7 It is a schematic diagram of another arrangement method of a ray receiving component provided in this practical embodiment;

[0026] Figure 8 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0027] Fig. 9 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0028] Fig.10 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0029] Fig.11 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0030] Fig.12 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0031] Fig.13 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0032] Fig.14 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0033] Fig.15 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0034] Fig.16 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0035] Fig.17 This is a schematic diagram of a configuration method of a radiation source and a radiation receiving component provided by the present practical embodiment;

[0036] Fig.18 It is a schematic diagram of another arrangement of a radiation source and a radiation receiving component provided by the present practical embodiment;

[0037] Fig.19 is a structural schematic diagram of another ray detection device provided by this practical embodiment;

[0038] Fig. 20 It is a structural schematic diagram of another ray detection device provided by this practical embodiment;

[0039] Fig.21 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0040] Fig. 22 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0041] Fig.23This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0042] Fig.24 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0043] Fig.25 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0044] Fig.26 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0045] Fig. 27 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0046] Fig.28 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0047] Fig.29 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment;

[0048] Fig.30 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] As mentioned in the background technology, the existing nuclear radiation detection instrument is limited by the material, process, structure and other factors of its own components, and at least has the technical problem of weak detection ability. This technical problem is particularly prominent in the detection scene of the medium in the large-sized container. After careful research, the inventor found that the reason for the above technical problem is that the components used for detecting rays in the commonly used nuclear radiation detection instruments on the market (such as the density meter based on the principle of nuclear radiation, passive nuclear material level meter, etc.) mostly use sodium iodide crystals. Sodium iodide crystals are generally thin, and the cross-sectional area of ​​the rays they detect is very limited, and the detection ability of the nuclear radiation detection instrument is proportional to the cross-sectional area of ​​the rays detected by the sodium iodide crystal. Therefore, the detection ability of the existing nuclear radiation detection instrument is limited, which affects the measurement effect. There are pain points such as the inability to measure parameters such as the density of the medium in the large-sized container, and the low detection sensitivity and accuracy.

[0052] Specifically, Figure 1This is a schematic diagram of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment. Figure 2 This is a side view of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment. Figure 3 This is a top view of the ray detection principle of an existing nuclear radiation detection instrument provided by this practical embodiment, see Figure 1-Figure 3 , assuming that the beam angle of the ray beam X is 2°, and the container M equipped with the nuclear radiation detection instrument Y is a cylindrical cone-bottomed sedimentation tank with a radius of 20m, then the ray beam X is emitted horizontally from point A of the container M, passing through the container M and the medium ( Figure 1 The length of the area B formed after the radiation beam (not shown) reaches the opposite side of the container M is about 0.7 m. Obviously, the cross-sectional length of the sodium iodide crystal in the existing nuclear radiation detection instrument Y is mostly at the centimeter level. The sodium iodide crystal set in the area B can only receive a very small part of the radiation beam. The cross-sectional area of ​​the crystal detection radiation is far different from the area B formed after the radiation beam reaches the opposite side of the container M. This is the main reason why the existing nuclear radiation detection instrument has limited detection capabilities, poor measurement effects, low detection sensitivity and accuracy, and is particularly unsuitable for large-size container measurement scenarios.

[0053] In view of the above technical problems, this utility proposes the following solutions:

[0054] Figure 4 is a schematic diagram of the structure of a ray detection device provided by this practical embodiment. Figure 4 As shown, the radiation detection device 100 is at least used to detect the medium information in the container; the radiation detection device 100 includes an emitter 110 and at least one detector 120; the emitter 110 is at least used to generate and emit at least one beam of detection radiation, so that the corresponding detection radiation forms an attenuated radiation after passing through the corresponding detection path and is received by the corresponding detector 120; the detector 120 is at least used to receive the attenuated radiation in response to obtain the radiation information of the corresponding detection path, and determine the medium information under the corresponding detection path according to the radiation information; the radiation receiving component of the detector 120 is abutted, fitted or adjacent to the container, and at least covers the container exit area of ​​the corresponding attenuated radiation, so as to increase the detection area of ​​the detector 120 and enhance the detection capability of the detector 120.

[0055] Among them, the container can be a tank body and a storage body that can carry the medium, a pipeline for conveying the medium, or other similar instruments or components; taking the production equipment in the industrial field as an example, the container in this practical embodiment can be but is not limited to the reaction tank, material delivery pipeline and other components in the production equipment.

[0056] In addition, the state of the medium may be gaseous, liquid, solid, gas-liquid mixed state, solid-liquid mixed state, etc., preferably solid-liquid mixed state; the medium information may be medium density, medium density distribution gradient, medium flow rate, medium mass, medium mass flow rate, medium filling degree, etc. Exemplarily, the detection ray may be a gamma ray; accordingly, the emitter 110 may be a gamma ray generator, and the detector 120 may be a gamma ray detector.

[0057] In addition, the detection path may refer to the path between the spatial point where the emitter 110 emits the detection ray and the spatial point where the detector 120 receives the attenuated ray. It is understandable that the longer the detection path is, the more serious the attenuation of the detection ray is, the weaker the intensity of the attenuated ray is, and the less conducive it is to the accurate detection of the ray detection device 100. In view of this, in the actual application of the ray detection device 100, the distance between the emitter 110 and the detector 120 should be as short as possible to minimize the length of the detection path, so that the ray detection device 100 can obtain a higher-precision measurement result.

[0058] It can be known that radiation information can refer to the energy spectrum information obtained by the detector 120 by analyzing the attenuated rays it receives, such as the energy spectrum waveform of the attenuated rays, the number of cumulative counts of each address, the sum of the cumulative counts of each address, the occurrence time of each count of each address, the time frequency of the counts of each address and / or the time interval of the counts of each address, etc.

[0059] To summarize, the practical embodiment generates and emits at least one beam of detection rays through a radiator, so that the corresponding detection rays pass through the corresponding detection path to form attenuated rays and are received by the corresponding detector; the detector receives the attenuated rays accordingly to obtain the radiation information of the corresponding detection path based on the attenuated rays, and then determines the medium information under the corresponding detection path according to the radiation information, thereby realizing radiation monitoring of the medium in the container.

[0060] In addition, in view of the problem that the existing nuclear radiation detection instruments are limited by the material, process, structure and other factors of their own components and have weak detection capabilities, the present practical embodiment can increase the detection area of ​​the detector by setting a ray receiving component that is in contact with, fit with or adjacent to the container and at least covers the corresponding attenuation ray. The detection ray radiated by the radiator is received as much as possible without causing radiation waste; after such a setting, since the law of the radiator radiating the detection ray outward is a periodic Poisson distribution, increasing the detection area of ​​the detector can increase the number of attenuation rays detected by it, even if the ray detection device is applied to a large-sized container detection scene with a long detection path, the attenuation ray formed after the detection ray passes through the long detection path is too weak, the detector can effectively identify the weak attenuation ray, which is conducive to improving the detection sensitivity and accuracy of the ray detection device; at the same time, especially for large-sized containers, such a setting as in the present application can shorten the detection time of the ray detection device, ensure that a sufficient number of attenuation rays can be received within each detection time, improve the sensitivity and detection accuracy of the ray detection device, and help speed up the detection speed and shorten the detection cycle.

[0061] It should be noted that due to the difficulty of production, large-sized sodium iodide crystals are difficult to produce and are expensive. If the existing nuclear radiation detection instrument adopts the above-mentioned technical solution provided in this practical embodiment, it is difficult to balance the instrument manufacturing cost and detection capability.

[0062] In view of this, in one implementation of the present practical embodiment, the ray receiving component is optionally made of at least a plastic scintillator. The reason for this arrangement is that, according to the manufacturing process and composition of the plastic scintillator, the production difficulty and production cost of a large-sized plastic scintillator are much lower than those of a sodium iodide crystal; at the same time, the plastic scintillator is easy to cut and separate, and the user can process the large-sized plastic scintillator according to actual on-site needs to obtain a ray receiving component of a desired shape.

[0063] Based on the above embodiments, the specific structural composition and working principle of the detector are described below. Figure 5 This is a schematic diagram of the structure of a detector provided by this practical embodiment, see Figure 5 Optionally, the detector 120 includes a ray receiving component 121, a signal conversion component 122 and a processing control component 123 connected in sequence.

[0064] The ray receiving component 121 receives the attenuated ray and converts the attenuated ray into a first intermediate signal, and then transmits the first intermediate signal to the signal conversion component 122; the signal conversion component 122 converts the first intermediate signal into a second intermediate signal, and transmits the second intermediate signal to the processing and control component 123; the processing and control component 123 performs preprocessing on the second intermediate signal, and then obtains the radiation information of the corresponding detection path, and determines the medium information under the corresponding detection path according to the radiation information.

[0065] The radiation information includes at least one of the amplitude of the second intermediate signal after preprocessing, the time when each second intermediate signal recorded by the processing control component 123 is received, the time interval between each second intermediate signal recorded by the processing control component 123, and the time interval between the second intermediate signals with the same amplitude recorded by the processing control component 123.

[0066] Exemplarily, the ray receiving component 121 can at least be used to convert the received attenuated rays into an optical signal (i.e., a first intermediate signal) and then transmit the optical signal to the signal conversion component 122; the signal conversion component 122 can use a photomultiplier tube to convert the optical signal into an electrical signal (i.e., a second intermediate signal) and then transmit the electrical signal to the processing and control component 123; the processing and control component 123 can be a single-chip microcomputer, a microprocessor, an on-chip system, etc. that can realize electrical signal amplification, impedance matching, filtering and shaping and other functions (i.e., the processing and control component 123 performs preprocessing on the second intermediate signal) to obtain the radiation information of the corresponding detection path, and finally determine the medium information under the corresponding detection path based on the radiation information.

[0067] In one implementation of this practical embodiment, the processing control component 123 may include a signal processing module, a control module, a voltage stabilization module, a communication module, a power supply module, and the like. The signal processing module is mainly used to process the received second intermediate signal and upload the processed second intermediate signal to the control module; the voltage stabilizing module can be used to provide a stable voltage for the signal conversion component, and the voltage stabilizing module can be composed of a voltage divider, a high voltage generator and a voltage-controlled feedback unit; the control module is used to obtain the radiation information of the corresponding detection path according to the processed second intermediate signal, and determine the medium information of the medium in the detection path according to the radiation information of the corresponding detection path, so as to send the medium information to the communication module; the communication module is used to receive and transmit the medium information sent by the control module, for example, the medium information can be transmitted to the central control room, and the communication module can use wired communication methods (such as communication cables) or wireless communication technologies (such as Bluetooth, WiFi, 4G / 5G or ZigBee, etc.) to transmit the medium information; the power supply module is specifically used to convert the external power supply into a multi-level working voltage (for example, it can include voltage levels such as 3.3V, 5V, ±12V, ±15V or 24V) to ensure the normal operation of the detector 120.

[0068] Exemplarily, after attenuated rays with different energy levels are incident on the ray receiving component 121, the ray receiving component 121 will generate a variety of optical signals due to ionization and excitation. The higher the energy level of the attenuated rays, the stronger the corresponding optical signal generated by the ray receiving component 121. Therefore, the ray receiving component 121 will generate many optical signals with different intensities, and each intensity of the optical signal corresponds to an attenuated ray of an energy level. The multiple optical signals are transmitted to the signal conversion component 122. The signal conversion component 122 has a multi-stage amplification function, which can accelerate and multiply the multiple optical signals generated by the ray receiving component 121 under a high-voltage electric field, thereby converting the multiple optical signals into corresponding electrical signals. The signal conversion component 122 can be provided with a multi-stage amplification system, which needs to be in a high-voltage electric field to accelerate and multiply the incident optical signal. Therefore, the gain of the signal conversion component 122 is very large, but it is also extremely sensitive to the output voltage fluctuation of the high-voltage generator. Therefore, the voltage stabilization module needs to provide a higher voltage level and the output voltage must be sufficiently stable to prevent the high-voltage level offset from causing the gain offset of the signal conversion component 122. The voltage stabilization module can be used to stably output a higher voltage to the signal conversion component 122 to prevent the phenomenon of gain offset of the signal conversion component 122 caused by high voltage instability. Specifically, the high voltage generator is connected to the voltage control feedback unit, the output end of the high voltage generator is connected to the voltage divider, the voltage divider is connected to the signal conversion component, the high voltage generator generates and outputs a voltage, the voltage control feedback unit detects the voltage output by the high voltage generator and feeds back, thereby realizing the regulation and control of the output voltage of the high voltage generator, ensuring the stability of the output voltage of the high voltage generator, and then the voltage output by the high voltage generator is reasonably distributed to each multiplier of the signal conversion component 122 through the voltage divider, and a suitable voltage gradient distribution is provided between each multiplier. The signal processing module can be specifically used to obtain a narrow pulse signal after at least pre-amplification, impedance matching and filtering shaping of each electrical signal. The signal processing module can specifically include a preamplifier and a filtering shaping circuit. Each electrical signal from the signal conversion component is pre-amplified and impedance matched by the preamplifier to form a tail-shaped pulse signal. The tail-shaped pulse signal is shaped after the filtering shaping circuit acts, without tailing, thereby obtaining a narrow pulse signal. Here, the filter shaping circuit can pre-process the amplitude and baseline of the tail-shaped pulse signal to obtain a narrow pulse signal. The control module counts and classifies the narrow pulse signal to obtain the radiation information of the corresponding detection path, and then determines the medium information under the detection path according to the radiation information of the corresponding detection path, and transmits the medium information to the communication module. The communication module receives and transmits the medium information to the central control room.

[0069] Specifically, in one implementation of the present practical embodiment, optionally, the processing control component 123 is at least specifically used to parse out the medium information according to the sum of the number of second intermediate signals of multiple set amplitudes after preprocessing in a preset time period, taking the average or weighted average; or, parse out the medium information according to the sum of the number of second intermediate signals of all amplitudes after preprocessing in a preset time period, taking the average or weighted average; or, parse out the medium information by analyzing the time interval between each second intermediate signal of the same amplitude after preprocessing in a preset time period; or, parse out the medium information by analyzing the time interval between second intermediate signals of multiple amplitudes after preprocessing in a preset time period. Among them, the preset time period and the set amplitude can be adjusted automatically, and the present practical embodiment does not limit this.

[0070] It should be noted that, under normal circumstances, for example, if an MCU is used as a control module, the number of data bits used by the MCU for sampling determines the number of total address information numbers. An MCU with a suitable number of AD sampling data bits can be flexibly selected as the control module as needed.

[0071] It should also be noted that the greater the energy of the attenuated ray, the stronger the corresponding light signal, and thus the higher the peak amplitude of the narrow pulse signal, the greater the value obtained by the sampled data, and the larger the number of the track information corresponding to the value. The narrow pulse signal obtained by the signal processing module is classified by the control module according to the amplitude peak value of the narrow pulse signal, each amplitude peak corresponds to a track information number, and the narrow pulse signal of each amplitude peak is recorded on the corresponding track information number, that is, the count on the corresponding track information number is increased by 1. As time accumulates, the larger the accumulated count value on the track information number, the more narrow pulse signals corresponding to the track information number with the amplitude peak, indicating that the more attenuated rays are incident on the ray receiving component, and the control module counts and forms radiation information according to the number and situation of the accumulated counts on each track information number within a preset time (the specific configuration of the preset time can be adaptively changed according to the actual situation, for example, it can be a detection cycle of the ray detection device).

[0072] Based on the above embodiments, there may be many ways to set up the ray receiving component in the detector. However, no matter how the ray receiving component is set up, it only needs to cover the container exit area that attenuates the rays. The following are several layout schemes of the ray receiving component provided in this practical embodiment.

[0073] In one implementation of this practical embodiment, Figure 6 is a schematic diagram of a setting method of a ray receiving component provided in this practical embodiment, Figure 7 FIG. 1 is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Figure 6 and Figure 7 As shown, optionally, the radiation receiving component 121 is integrally formed and completely surrounds part of the outer wall of the container; the end surface of the radiation receiving component close to the container M is in contact with the outer wall of the container. It can be understood that the shape of the side of the radiation receiving component 121 that is in contact with the outer wall of the container is basically consistent with the shape of the outer wall of the container. Figure 6 and Figure 7 The cross-sectional shape of the container M is shown as a circle, which is not a limitation to the practical embodiment. In other embodiments, the cross-sectional shape of the container M can be a rectangle or other irregular shapes.

[0074] In another implementation of this practical embodiment, Figure 8 is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Figure 8 As shown, optionally, the radiation receiving component 121 is integrally formed and completely surrounds a portion of the outer wall of the container; the end surface of the radiation receiving component 121 close to the container M abuts against the outer wall of the container.

[0075] In another implementation of this practical embodiment, Fig. 22 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.23 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.24 is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Figure 22-Figure 24 As shown, optionally, the radiation receiving component 121 is integrally formed and completely surrounds a portion of the outer wall of the container; the end surface of the radiation receiving component 121 close to the container M is adjacent to the outer wall of the container. It should be noted that, Figure 22-Figure 24 The cross-sectional shapes of the radiation receiving component 121 and the container M are exemplarily shown to be regular shapes, and the radiation receiving component 121 and the container M are coaxially arranged. In other embodiments, the cross-sectional shapes of the radiation receiving component 121 and / or the container M are irregular shapes, and / or the radiation receiving component 121 and the container M are non-coaxially arranged.

[0076] In another implementation of this practical embodiment, Fig. 9 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.21 is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Fig. 9 and Fig.21 As shown, optionally, the radiation receiving component 121 is integrally formed and does not fully surround a portion of the outer wall of the container; the end surface of the radiation receiving component 121 close to the container M is in contact with the outer wall of the container.

[0077] In another implementation of this practical embodiment, Fig.10is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Fig.10 As shown, optionally, the radiation receiving component 121 is integrally formed and does not fully surround a portion of the container outer wall; the end surface of the radiation receiving component 121 close to the container M abuts against the container outer wall.

[0078] In another implementation of this practical embodiment, Fig.11 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.12 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.13 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.25 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.26 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig. 27 is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Figure 11-13 , Figure 25-27 As shown, optionally, the radiation receiving component 121 is not integrally formed and completely surrounds a portion of the outer wall of the container; the radiation receiving component 121 includes at least two receiving subcomponents ( Figure 11-13 , Figure 25-27 The number of receiving subcomponents is 4, and the areas where each receiving subcomponent abuts, fits or is adjacent to the outer wall of the container are different.

[0079] In another implementation of this practical embodiment, Fig.14 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.15 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.16 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.28 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.29 This is a schematic diagram of another arrangement of a ray receiving component provided in this practical embodiment. Fig.30 is a schematic diagram of another arrangement of a ray receiving component provided by the present practical embodiment, such as Figure 14-16 , Figure 28-Figure 30 As shown, optionally, the radiation receiving component 121 is not integrally formed and does not completely surround a portion of the outer wall of the container; the radiation receiving component 121 includes at least two receiving subcomponents ( Figure 14-16 , Figure 28-Figure 30 The figures all exemplify that the number of receiving subcomponents is 2, and the areas where each receiving subcomponent abuts, fits or is adjacent to the outer wall of the container are different.

[0080] It should be noted that in the above embodiments, the cross-sectional shape of the side of the radiation receiving component 121 away from the outer wall of the container is a regular plane; in other embodiments, the cross-sectional shape of the side of the radiation receiving component 121 away from the outer wall of the container may also be irregular.

[0081] Based on the setting methods of the ray receiving components in the aforementioned multiple embodiments, there may be multiple actual configuration methods for the emitter. In one embodiment provided by this practical embodiment, optionally, the emitter is at least a medium in a container. Among them, when the medium in the container itself has radioactivity, multiple detectors can be installed on the outer wall of the container in the vertical direction; when the height of the medium is lower than the position of a certain detector, the radiation generated by the medium that can be received by the detector is relatively limited (for example, lower than a certain radiation threshold); and when the height of the medium just exceeds the detector, the radiation generated by the medium that can be received by the detector is relatively strong (for example, equal to or greater than the aforementioned radiation threshold). The ray detection device based on this principle can be used as a level switch (for example, two detectors can be installed at the highest and lowest levels of the container specified by the user, respectively. Once the corresponding detector detects that the medium has reached the highest level or the lowest level of the container, it will immediately alert the on-site personnel to check the container status) or perform continuous level detection.

[0082] In another implementation manner provided by this practical embodiment, Fig.17 This is a schematic diagram of a configuration of a radiation source and a radiation receiving component provided by this practical embodiment. Fig.18 This is a schematic diagram of another arrangement of a radiation source and a radiation receiving component provided by this practical embodiment, see Fig.17 and Fig.18 Optionally, the radiator includes at least a radiation source Q; the radiation source Q is installed inside the container M (such as Fig.17 ), or the radiation source Q is mounted on the outer wall of the container (such as Fig.18 ). Among them, when the radiation source Q is installed inside the container M, it is preferably set at the center of the container M. This setting is particularly suitable for the working condition that the radiation receiving component 121 fully surrounds part of the outer wall of the container, or the radiation source Q is far away from the detector (usually exists in the measurement scenario of large-sized containers). Of course, the radiation source Q can also be placed on the outer wall of the container (for example, it can be opposite to the center of the detector). This setting is more suitable for the working condition that the radiation receiving component 121 does not fully surround the outer wall of the container, or the radiation source Q is close to the detector (generally in the detection scenario of small-sized containers). The reason for this setting is that the farther the detection ray P generated by the radiator is from the detector, the more serious the ray attenuation, and the detection capability of the detector generally decays exponentially.

[0083] On the basis of the above embodiments, if the radiation detection device includes a plurality of detectors, different detectors may share a radiation receiving component and / or a processing and control component. Fig.19 is a schematic diagram of the structure of another ray detection device provided by this practical embodiment, Fig. 20 This is a schematic diagram of the structure of another radiation detection device provided by this practical embodiment. Figure 19-20 Optionally, when the radiation detection device includes multiple detectors, a single radiation receiving component 121 is configured to be shared by a single, part or all of the detectors; when the radiation detection device includes multiple detectors, a single, part or all of the detectors share a processing control component ( Fig.19 and Fig. 20 It is shown in the example that the number of detectors is 2, the processing control component is composed of a signal processing module 123A and a control module 123B, and each detector is composed of a ray receiving component 121, a signal conversion component 122, a signal processing module 123A and a control module 123B). It can be understood that such a setting can simplify the structural composition of the ray detection device and help reduce the manufacturing cost of the device.

[0084] The above is only a preferred implementation of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A ray detection device for expanding the detection area, characterized in that: The ray detection device is at least used to detect medium information in the container; The radiation detection device includes a radiator and at least one detector; The radiator is at least used to generate and emit at least one beam of detection rays, and the detection rays pass through a set detection path to form attenuated rays and are received by the detector; The ray receiving component of the detector abuts, fits or is adjacent to the container and at least covers the corresponding container exit area of ​​the attenuated ray; When the radiation detection device includes a plurality of the detectors, a single radiation receiving component is configured to be shared by a single, a part of, or all of the detectors.

2. The radiation detection device according to claim 1, characterized in that: The ray receiving assembly is at least made of a plastic scintillator.

3. The radiation detection device according to claim 1, characterized in that: The detector includes a ray receiving component, a signal conversion component and a processing control component connected in sequence; The ray receiving component receives the attenuated ray and converts the attenuated ray into a first intermediate signal, and then transmits the first intermediate signal to the signal conversion component; the signal conversion component converts the first intermediate signal into a second intermediate signal, and transmits the second intermediate signal to the processing and control component; the processing and control component performs preprocessing on the second intermediate signal, and then obtains the radiation information of the corresponding detection path, and determines the medium information under the corresponding detection path according to the radiation information; The radiation information includes at least one of the amplitude of the second intermediate signal after preprocessing, the time when each second intermediate signal is received recorded by the processing and control component, the time interval between each second intermediate signal recorded by the processing and control component, and the time interval between the second intermediate signals with the same amplitude recorded by the processing and control component.

4. The radiation detection device according to claim 1, characterized in that: The radiation receiving assembly is integrally formed and completely surrounds a portion of the outer wall of the container; The end surface of the radiation receiving component close to the container is in contact with, in abutment with or adjacent to the outer wall of the container.

5. The radiation detection device according to claim 1, characterized in that: The radiation receiving assembly is integrally formed and does not completely surround a portion of the outer wall of the container; The end surface of the radiation receiving component close to the container is in contact with, in abutment with or adjacent to the outer wall of the container.

6. The radiation detection device according to claim 1, characterized in that: The radiation receiving assembly is not integrally formed and completely surrounds a portion of the outer wall of the container; the radiation receiving assembly includes at least two receiving sub-components, and the areas where each receiving sub-component abuts, fits or is adjacent to the outer wall of the container are different.

7. The radiation detection device according to claim 1, characterized in that: The radiation receiving component is not integrally formed and does not completely surround a portion of the outer wall of the container; the radiation receiving component includes at least two receiving subcomponents, and the areas where each receiving subcomponent abuts, fits or is adjacent to the outer wall of the container are different.

8. The radiation detection device according to claim 1, characterized in that: The emitter is at least the medium in the container.

9. The radiation detection device according to claim 1, characterized in that: The radiator at least comprises a radiation source; the radiation source is installed inside the container, or the radiation source is installed on the outer wall of the container.

10. The radiation detection device according to claim 1, characterized in that: When the radiation detection device includes a plurality of the detectors, a single, a part of or all of the detectors share a processing control component.

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