CN112965095A - Neutron-gamma integrated detection device for nuclear power complex environment - Google Patents
Neutron-gamma integrated detection device for nuclear power complex environment Download PDFInfo
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- CN112965095A CN112965095A CN202110182764.7A CN202110182764A CN112965095A CN 112965095 A CN112965095 A CN 112965095A CN 202110182764 A CN202110182764 A CN 202110182764A CN 112965095 A CN112965095 A CN 112965095A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Abstract
The application relates to a neutron-gamma integration detection device for nuclear power complex environment, will survey subassembly and data processing subassembly and set up in the holding intracavity of watertight protection subassembly, at the beginning during operation, the neutron that needs to survey, gamma ray accessible and the detection opening of holding chamber intercommunication are incided to the detection subassembly to be detected the subassembly and detect. The data processing assembly is arranged on the side wall of the detection assembly, then the detection assembly is fixedly arranged in the containing cavity formed by the watertight assembly, and the finally obtained neutron-gamma integrated detection device has a smaller volume and can adapt to the detection environment with tense working space through the compact design of the watertight protection assembly, the detection assembly and the data processing assembly; meanwhile, due to the protection design of the watertight protection component, the neutron-gamma integrated detection device can adapt to environmental conditions such as ocean humidity, salt fog and impact. The neutron-gamma integrated detection device has the advantage of high working reliability.
Description
Technical Field
The application relates to the technical field of ionizing radiation detection, in particular to a neutron-gamma integrated detection device for nuclear power complex environment.
Background
The environmental radiation monitoring is an important link for maintaining nuclear safety, and is an important guarantee for nuclear facility workers to timely and accurately acquire surrounding environmental radiation information. Due to the position characteristics of the coastal nuclear power plants, besides onshore environmental radiation monitoring sites, a certain number of offshore environmental radiation monitoring sites are required to be arranged. Compared with the existing land fixed environmental radiation monitoring station, the marine environmental operation conditions, the operation modes and the arrangement structure of the monitoring station are all greatly different, and no mature marine environmental radiation monitoring corollary equipment exists at present in China. The neutron and gamma ray detection is needed in the environmental radiation monitoring, the traditional neutron-gamma integrated detection device is large in size generally, is inconvenient to arrange at a marine environmental radiation monitoring site with a short space, does not consider the working requirements under a special working scene (such as marine environmental conditions), is low in protection level and relatively poor in reliability, and cannot guarantee continuous working in the special working scene.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a neutron-gamma integrated detection device for nuclear power complex environment, which addresses the above-mentioned problems of the conventional neutron-gamma integrated detection device.
A neutron-gamma integrated detection device for nuclear power complex environment comprises: the watertight protection assembly is provided with an accommodating cavity and a detection opening communicated with the accommodating cavity; the detection assembly is fixedly arranged in the accommodating cavity and used for detecting and generating corresponding electric signals when neutrons and gamma rays are incident from the detection opening and sending the electric signals to the data processing assembly; and the data processing assembly is arranged on the side wall of the detection assembly, is electrically connected with the detection assembly and is used for analyzing according to the electric signal to obtain neutron and gamma dose detection results.
In one embodiment, the neutron-gamma integrated detection device further comprises a support assembly, and the detection assembly is fixedly arranged in the accommodating cavity through the support assembly.
In one embodiment, the neutron-gamma integrated detection device further comprises a power supply assembly, wherein the power supply assembly is arranged on the side wall of the detection assembly and is electrically connected with the detection assembly and the data processing assembly.
In one embodiment, the power supply component comprises a power interface, a low voltage processor and a high voltage processor, the power interface is used for connecting an external power supply, the power interface is connected with the low voltage processor and the high voltage processor, the low voltage processor is connected with the data processing component, and the high voltage processor is connected with the detection component.
In one embodiment, the detection assembly includes a detection crystal, a photomultiplier tube, and a preamplifier, the detection crystal being coupled to the photomultiplier tube, the photomultiplier tube being coupled to the preamplifier, and the preamplifier being coupled to the data processing assembly.
In one embodiment, the detection assembly further comprises a detection protection sleeve, the detection crystal, the photomultiplier and the preamplifier are arranged inside the detection protection sleeve, and the data processing assembly is arranged on the outer wall of the detection protection sleeve.
In one embodiment, the detector crystal is Cs2LiYCl6Ce solid scintillation crystal.
In one embodiment, the data processing component comprises an amplifier, an analog-to-digital converter and a field programmable gate array device, wherein the amplifier is connected with the detection component, the amplifier is connected with the analog-to-digital converter, and the analog-to-digital converter is connected with the field programmable gate array device.
In one embodiment, the watertight protection assembly comprises a watertight base and a watertight protection sleeve with openings at two opposite ends, one open end of the watertight protection sleeve is connected to the watertight base in a watertight manner, the other open end of the watertight protection sleeve is used as the detection opening, and the detection assembly and the data processing assembly are arranged inside the watertight protection sleeve.
In one embodiment, the watertight base is provided with a through hole for receiving a data connecting line, so that neutron and gamma dose detection results obtained by analysis of the data processing assembly can be transmitted to an external detection data acquisition system through the data line.
Above-mentioned neutron-gamma integration detection device for nuclear power complex environment sets up detection subassembly and data processing subassembly in the holding intracavity of watertight protection subassembly, and when neutron-gamma integration detection device began working, neutron, gamma ray accessible that need survey and the detection opening incident of holding chamber intercommunication to the detection subassembly to be detected the subassembly and detect. The detection assembly obtains corresponding electric signals according to the received neutrons and gamma rays and sends the electric signals to the data processing assembly arranged on the side wall of the detection assembly for further analysis and processing, and finally, corresponding neutron and gamma dose detection results are obtained. According to the scheme, the data processing assembly is arranged on the side wall of the detection assembly, then the detection assembly is fixedly arranged in the accommodating cavity formed by the watertight assembly, and the finally obtained neutron-gamma integrated detection device has a smaller volume and can be suitable for the detection environment with tense working space through the compact design of the watertight protection assembly, the detection assembly and the data processing assembly; meanwhile, due to the protection design of the watertight protection component, the neutron-gamma integrated detection device can adapt to environmental conditions such as ocean humidity, salt fog and impact. The neutron-gamma integrated detection device obtained by the scheme has the advantage of high working reliability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of an integrated neutron-gamma detector assembly in one embodiment;
FIG. 2 is a top view of an embodiment of an integrated neutron-gamma detector;
FIG. 3 is a cross-sectional view of an integrated neutron-gamma detector in another embodiment;
FIG. 4 is a schematic diagram of an electrical connection configuration of a battery assembly, a data processing assembly, and a detection assembly in one embodiment;
FIG. 5 is a cross-sectional view of a neutron-gamma integrated detection device in another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a neutron-gamma integrated detection device for nuclear power complex environment includes: a watertight protection assembly 10 having a housing chamber 11 and a detection opening 12 communicating with the housing chamber 11; the detection assembly 20 is fixedly arranged in the accommodating cavity 11, and is used for detecting and generating corresponding electric signals when neutrons and gamma rays enter from the detection opening 12 and sending the electric signals to the data processing assembly 30; the data processing assembly 30 is disposed on a side wall of the detection assembly 20, and is electrically connected to the detection assembly 20 (not shown), and is configured to analyze the electrical signal to obtain a neutron/gamma dose detection result.
Specifically, the watertight protection component 10 is a device that isolates the accommodating cavity 11 from the external environment by using a watertight method and protects the device disposed inside the accommodating cavity 11. The detection assembly 20 is a device capable of generating electrical signals of different magnitudes according to the intensity detection of neutrons and gamma rays in an environment with the neutrons and the gamma rays. The data component is a device capable of sampling waveforms according to the electrical signals generated by the detection component 20 to realize neutron and gamma discrimination. Because neutron-gamma integration detection device need receive corresponding neutron, gamma ray when surveying the environment, so watertight protection component 10 can not totally seal, otherwise set up in its inside detection component 20 and can't detect neutron, gamma ray, but be provided with a detection opening 12 that is linked together with holding chamber 11, through this detection opening 12, neutron, gamma ray can incide to the inside of holding chamber 11, and then realize the detection operation.
It should be noted that the shapes of the detection assembly 20 and the watertight protection assembly 10 are not exclusive, as long as the detection assembly 20 and the data processing assembly 30 can be completely accommodated in the accommodating cavity 11 of the watertight protection assembly 10. For example, in an embodiment, please refer to fig. 1 and fig. 2 in combination, the watertight protecting assembly 10 may be designed to be a hollow cylinder with an open top, the hollow portion of the cylinder is the accommodating cavity 11, the open top portion is the detecting opening 12, the detecting assembly 20 is fixedly disposed in the accommodating cavity 11, i.e., is fixedly disposed on the inner wall of the watertight protecting assembly 10, and the data processing assembly 30 is disposed on the side wall of the detecting assembly 20. Correspondingly, in one embodiment, the detecting element 20 may be designed to be a rectangular parallelepiped, the rectangular parallelepiped detecting element 20 is completely accommodated in the accommodating cavity 11, when the detecting element 20 is fixedly disposed on the watertight protecting element 10, only one surface of the detecting element 20 needs to be fixed to the inner wall of the watertight protecting element 10, and the data processing element 30 is fixedly disposed on any side surface of the detecting element 20.
It is to be understood that the shape of the watertight shielding module 10 is not limited to the open-topped hollow cylindrical shape of the above-described embodiment, but may be an open-topped hollow rectangular parallelepiped shape or the like; the shape of the detection unit 20 is not limited to the rectangular parallelepiped shape in the above embodiment, and may be a cylindrical shape.
In a more detailed embodiment, the watertight module is designed in the shape of a hollow cylinder with an open top, and has the specific dimensions that the top surface has an outer diameter of 12 cm and a height of 28 cm. Through the design of the watertight component with the shape and the size, the neutron-gamma integrated detection device occupies a small space integrally and is suitable for a special environment with a short arrangement space of an environmental radiation monitoring station.
Referring to fig. 3, in an embodiment, the neutron-gamma integrated detection device further includes a supporting component 50, and the detection component 20 is fixedly disposed in the accommodating cavity 11 through the supporting component 50.
Specifically, in the present embodiment, a supporting assembly 50 is further disposed between the detecting assembly 20 and the watertight protecting assembly 10, and the detecting assembly 20 is fixed to the accommodating cavity 11 of the watertight protecting assembly 10 through the supporting assembly 50. Specifically, the supporting component 50 is fixed to the watertight component by screws, and then the supporting component is fixed to the detecting component 20, so that the detecting component 20 and the watertight protecting component 10 can be fixed to each other.
Referring to fig. 3, in one embodiment, the neutron-gamma integrated detection device further includes a power module 40, and the power module 40 is disposed on a side wall of the detection module 20 and electrically connected to the detection module 20 and the data processing module 30 (not shown).
Specifically, the detection component 20 and the data processing component 30 need power supply to supply power during operation, so the power supply component 40 is further disposed on the sidewall of the detection component 20, and the power supply component 40 outputs power of corresponding voltage to supply power to the detection component 20 and the data processing component 30, respectively. It is understood that in one embodiment, the power module 40 and the data processing module 30 may be disposed on the detecting module 20 in the form of board cards, and specifically, each device in the power module 40 may be disposed on the same circuit substrate, and each device in the data processing module 30 may be disposed on the same circuit substrate, and then the corresponding circuit substrate is fixedly disposed on the sidewall of the detecting module 20. It should be noted that in another embodiment, the components related to the power module 40 and the data processing module 30 may be disposed on a circuit substrate, and then the circuit substrate may be fixedly disposed on the sidewall of the detecting module 20.
Further, referring to fig. 4, in one embodiment, the power supply assembly 40 includes a power interface 41, a low voltage processor 42 and a high voltage processor 43, the power interface 41 is used for connecting an external power supply, the power interface 41 is connected with the low voltage processor 42 and the high voltage processor 43, the low voltage processor 42 is connected with the data processing assembly 30, and the high voltage processor 43 is connected with the detection assembly 20.
Specifically, in this embodiment, the power supplies provided for the detection component 20 and the data processing component 30 are input through the power interface 41 of the power supply component 40, then the voltages with the sizes matched with those of the detection component 20 and the data processing component 30 are obtained after being processed by the power supply component 40, and then the voltages are respectively transmitted to the detection component 20 and the data processing component 30, so that the data processing component and the power supply operation of the detection component 20 can be realized. The high voltage processor 43 converts the input voltage into a higher voltage and provides the higher voltage to the detecting component 20, and the low voltage processor 42 converts the input voltage into a lower voltage and provides the lower voltage to the data processing component 30. It will be appreciated that the external power supply to the input power supply assembly 40 is not exclusive and in one embodiment may be a 12 volt dc power supply.
Referring to fig. 4, in one embodiment, the detecting assembly 20 includes a detecting crystal 21, a photomultiplier tube 22 and a preamplifier 23, the detecting crystal 21 is connected to the photomultiplier tube 22, the photomultiplier tube 22 is connected to the preamplifier 23, and the preamplifier 23 is connected to the data processing assembly 30.
Specifically, when neutrons and gamma rays are incident on the detection crystal 21, they interact with the detection crystal 21 to generate fluorescence signals with different time characteristics, and these fluorescence signals are received by a Photomultiplier Tube (PMT) 22 and converted into electric signals, and the electric signals after several stages of multiplication are transmitted to a preamplifier 23, rapidly amplified and transmitted to the data processing component 30. It should be noted that in order to achieve the detection of both neutrons and gamma rays, in one embodiment, the detection crystal 21 should employ a crystal that has both neutron and gamma ray discrimination. For example, in one embodiment, Cs may be used2LiYCl6Ce solid state scintillation crystal is used as the detection crystal 21. It is understood that in other embodiments, other types of detection crystals 21 may be used, as long as neutron and gamma ray detection is possible.
Further, in one embodiment, in order to ensure the reliability of the electric signal amplification process, in one embodiment, the preamplifier 23 employs a low-noise charge-sensitive amplifier, which can rapidly amplify the electric signal output from the photomultiplier tube 22.
Referring to fig. 5, in one embodiment, the detection assembly 20 further includes a detection protection sleeve 24, the detection crystal 21, the photomultiplier tube 22 and the preamplifier 23 are disposed inside the detection protection sleeve 24 (not shown), and the data processing assembly 30 is disposed on the outer wall of the detection protection sleeve 24.
Specifically, in order to ensure that the detection assembly 20 is not interfered by the external environment, in this embodiment, the detection assembly 20 further includes a detection protection sleeve 24, the detection crystal 21, the photomultiplier 22 and the preamplifier 23 are disposed inside the detection protection sleeve 24, and one end of the detection protection sleeve 24 is an opening for receiving the neutrons and gamma rays incident from the external environment by the detection crystal 21.
It should be noted that the particular shape of the detection protection sleeve 24 is not exclusive, and the shape of the detection protection sleeve 24 determines the shape of the detection assembly 20. As shown in the above embodiment, the shape of the detection assembly 20 may be a cylinder or a rectangular parallelepiped with one end open (for neutron and gamma ray incidence), and the protection sleeve may be correspondingly configured to be a hollow cylinder or a rectangular parallelepiped, and the hollow position is used for placing the detection crystal 21, the photomultiplier 22 and the preamplifier 23. Correspondingly, in one embodiment, the detection crystal 21 may also be designed in a cylindrical shape or a rectangular parallelepiped shape.
Referring to fig. 4, in one embodiment, the data processing component 30 includes an amplifier 31, an analog-to-digital converter 32, and a field programmable gate array device 33, the amplifier 31 is connected to the detecting component 20, the amplifier 31 is connected to the analog-to-digital converter 32, and the analog-to-digital converter 32 is connected to the field programmable gate array device 33.
Specifically, after the electrical signals with different waveforms sent by the detection component 20 are further amplified by the amplifier 31, waveform sampling is completed in the high-speed analog-to-digital converter ADC (i.e., the analog-to-digital converter 32), then the sampled waveforms are processed in real time in the Field Programmable Gate Array (FPGA) device 33(Field Programmable Gate Array), so as to complete the discrimination of the waveform signals with different neutrons and gamma rays, and finally the discriminated neutron and gamma ray dose detection result data is transmitted to the monitoring data acquisition system. Further, in one embodiment, the data processing assembly 30 is further provided with a data interface through which the analyzed neutron and gamma dose detection result data can be transmitted to an external device.
It should be noted that, in an embodiment, the field programmable gate array device 33 adopts a discrimination optimization algorithm based on an artificial neural network, so that the gamma misjudgment rate can be reduced to 0.3%, and the reliability of the monitoring data can be effectively improved; the data interface is an RS485 interface. In this embodiment, the artificial neural network-based screening algorithm adopted by the neutron-gamma integrated detection device can improve the neutron-gamma screening rate, and further enhance the working reliability of the neutron-gamma integrated detection device.
Further, in an embodiment, the devices involved in the detection component 20, the data processing component 30, and the power supply component 40 all use devices with low power consumption, so that the low power consumption design of the neutron-gamma integrated detection device meets the continuous/emergency monitoring function requirement of the nuclear facility, and the operational reliability of the neutron-gamma integrated detection device is further improved.
Referring to fig. 3, in one embodiment, the watertight protecting assembly 10 includes a watertight base 14 and a watertight protecting sleeve 13 with two opposite ends open, one open end of the watertight protecting sleeve 13 is connected to the watertight base 14 in a watertight manner, the other open end of the watertight protecting sleeve 13 is used as a detecting opening 12, and a detecting assembly 20 and a data processing assembly 30 are disposed inside the watertight protecting sleeve 13.
Specifically, as shown in the above embodiments, the shape of the watertight protecting module 10 may be an open-top hollow cylinder shape or an open-top hollow rectangular parallelepiped shape, and the shapes of the watertight base 14 and the watertight protecting sleeve 13 in the watertight protecting module 10 are not exclusive. Taking the watertight protection component 10 as an example of a hollow cylinder with an open top, the watertight protection sleeve 13 can be set as a cylindrical sleeve with two open ends, the watertight base 14 can be designed into a cylindrical shape, the diameter of the watertight base 14 is consistent with the outer diameter of the watertight protection sleeve 13, so that when the watertight protection sleeve 13 is in watertight connection with the watertight base 14, the watertight base 14 can just seal one end of the watertight protection sleeve 13 to form an accommodating cavity 11 for placing the detection component 20 and the data processing component 30, and the watertight protection sleeve 13 is not provided with one end of the watertight base 14 and is used for incidence of neutrons and gamma rays.
Further, referring to fig. 3, in an embodiment, the watertight base 14 is provided with a through hole 141, and the through hole 141 is used for receiving a data connection line, so that the neutron and gamma dose detection result analyzed by the data processing component 30 can be transmitted to an external detection data acquisition system through the data line.
Specifically, in order to facilitate the data processing assembly 30 to output the neutron and gamma dose detection results for corresponding monitoring analysis, in this embodiment, a through hole 141 is formed in the watertight base 14, and is used for extending the data line led out from the output port of the data processing assembly 30 to the outside of the neutron-gamma integrated detection device, so as to implement the related detection result transmission operation.
In order to facilitate understanding of the embodiments of the present application, the following describes the technical solution of the present application with reference to a detailed embodiment.
Referring to fig. 3-5, the neutron-gamma integrated detection device in this embodiment includes a detection assembly 20, a data processing assembly 30, a power supply assembly 40, a support assembly 50 and a watertight protection assembly 10, wherein the detection assembly 20 includes a detection protection sleeve 24, a detection crystal 21, a photomultiplier tube 22 and a preamplifier 23, the data processing assembly 30 includes an amplifier 31, an analog-to-digital converter 32, a field programmable gate array device 33 and a data interface, and the power supply assembly 40 includes a power supply interface 41, a low voltage processor 42 and a high voltage processor 43. The detection protective sleeve 24 is a cuboid, the detection crystal 21 is designed to be cylindrical, and is arranged inside the detection protective sleeve 24 together with the photomultiplier 22 and the preamplifier 23, the bottom surface of the detection protective sleeve 24 is fixedly connected with the watertight base 14 of the watertight protection component 10 through the supporting component 50, and the power supply component 40 and the data processing component 30 are respectively arranged on different side walls of the detection protective sleeve 24 in a board card mode. The watertight base 14 of the watertight protection assembly 10 is cylindrical and is connected with the cylindrical watertight protection sleeve in a watertight manner, and the watertight base 14 is provided with a through hole 141.
When neutrons and gamma rays enter the detection crystal 21, the neutrons and the gamma rays interact with the detection crystal 21 to generate fluorescence signals with different time characteristics, the fluorescence signals are received by the photomultiplier tube 22 and converted into electric signals, and the electric signals after several-stage multiplication are transmitted to the preamplifier 23, rapidly amplified and transmitted to the amplifier 31 of the data processing assembly 30. After the electric signals with different waveforms are further amplified by the amplifier 31, waveform sampling is completed in the analog-to-digital converter 32, then the sampled waveforms are processed in the field programmable gate array device 33 in real time, discrimination of different neutron and gamma waveform signals is completed, and the discriminated neutron and gamma dose detection result data is transmitted to an external monitoring data acquisition system through the data interface and the through hole 141.
The neutron-gamma integrated detection device obtained by the embodiment has the characteristics of compact structural design, small occupied space and short arrangement space, and is suitable for the environment radiation monitoring station; the watertight protective sleeve 13 is cylindrical and is fixed with the watertight base 14 in a watertight connection mode, the watertight base 14 is cylindrical, the center of the watertight base is provided with a through hole 141 for connecting a data transmission line, and the protection design ensures that the whole neutron-gamma integrated detection device reaches the protection level of IP66 and is suitable for operating environment conditions such as ocean humidity, salt fog, impact and the like.
Above-mentioned neutron-gamma integration detection device for nuclear power complex environment sets up detection component 20 and data processing subassembly 30 in the holding chamber 11 of watertight protection component 10, and when neutron-gamma integration detection device began work, neutron, the gamma ray accessible that need detect were incided to detection component 20 with the detection opening 12 of holding chamber 11 intercommunication to detected component 20 detects. The detection component 20 obtains corresponding electrical signals according to the received neutrons and gamma rays, and sends the electrical signals to the data processing component 30 arranged on the side wall of the detection component for further analysis and processing, so as to finally obtain corresponding neutron and gamma dose detection results. According to the scheme, the data processing assembly 30 is arranged on the side wall of the detection assembly 20, then the detection assembly 20 is fixedly arranged in the accommodating cavity 11 formed by the watertight assembly, and the finally obtained neutron-gamma integrated detection device has a smaller volume and can be suitable for the detection environment with tense working space through the compact design of the watertight protection assembly 10, the detection assembly 20 and the data processing assembly 30; meanwhile, due to the protection design of the watertight protection component 10, the neutron-gamma integrated detection device can adapt to environmental conditions such as ocean humidity, salt fog and impact. The neutron-gamma integrated detection device obtained by the scheme has the advantage of high working reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A neutron-gamma integrated detection device for nuclear power complex environment is characterized by comprising:
the watertight protection assembly is provided with an accommodating cavity and a detection opening communicated with the accommodating cavity;
the detection assembly is fixedly arranged in the accommodating cavity and used for detecting and generating corresponding electric signals when neutrons and gamma rays are incident from the detection opening and sending the electric signals to the data processing assembly;
and the data processing assembly is arranged on the side wall of the detection assembly, is electrically connected with the detection assembly and is used for analyzing according to the electric signal to obtain neutron and gamma dose detection results.
2. The neutron-gamma integrated detection device according to claim 1, further comprising a support assembly, wherein the detection assembly is fixedly arranged in the accommodating cavity through the support assembly.
3. The neutron-gamma integrated detection device of claim 1, further comprising a power supply assembly disposed on a side wall of the detection assembly and electrically connected to the detection assembly and the data processing assembly.
4. The neutron-gamma integrated detection device of claim 3, wherein the power supply assembly comprises a power interface, a low voltage processor and a high voltage processor, the power interface is used for connecting an external power supply, the power interface is connected with the low voltage processor and the high voltage processor, the low voltage processor is connected with the data processing assembly, and the high voltage processor is connected with the detection assembly.
5. The neutron-gamma integrated detection device of claim 1, wherein the detection assembly comprises a detection crystal, a photomultiplier tube and a preamplifier, the detection crystal is connected to the photomultiplier tube, the photomultiplier tube is connected to the preamplifier, and the preamplifier is connected to the data processing assembly.
6. The neutron-gamma integrated detection device of claim 5, wherein the detection assembly further comprises a detection protection sleeve, the detection crystal, the photomultiplier tube and the preamplifier are disposed inside the detection protection sleeve, and the data processing assembly is disposed on an outer wall of the detection protection sleeve.
7. The neutron-gamma integrated detection device according to any of claims 5 to 6, wherein the detection crystal is Cs2LiYCl6Ce solid scintillation crystal.
8. The neutron-gamma integrated detection device according to claim 1, wherein the data processing component comprises an amplifier, an analog-to-digital converter and a field programmable gate array device, the amplifier is connected with the detection component, the amplifier is connected with the analog-to-digital converter, and the analog-to-digital converter is connected with the field programmable gate array device.
9. The neutron-gamma integrated detection device of claim 1, wherein the watertight protection assembly comprises a watertight base and a watertight protection sleeve with openings at opposite ends, one open end of the watertight protection sleeve is connected to the watertight base in a watertight manner, the other open end of the watertight protection sleeve serves as the detection opening, and the detection assembly and the data processing assembly are disposed inside the watertight protection sleeve.
10. The integrated neutron-gamma detection device according to claim 9, wherein the watertight base is provided with a through hole for receiving a data connection line, so that neutron and gamma dose detection results obtained by the analysis of the data processing assembly can be transmitted to an external detection data acquisition system through the data line.
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| CN117270015A (en) * | 2023-11-23 | 2023-12-22 | 中国科学技术大学 | Environmental neutron gamma radiation monitoring system and environmental neutron gamma radiation monitoring method |
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