Movable ore radiation detection device

Abstract

The invention discloses a mobile ore radiation detection device which comprises a frame body, a measuring assembly, a data processor and an electrical assembly, the measuring assembly, the data processor and the electrical assembly are fixedly assembled on the frame body. Energy spectrum data of to-be-measured ore can be collected through the measuring assembly, then the collected energy spectrum data are sent to the data processor through the electrical assembly, and the data processor analyzes and processes the energy spectrum data to determine the radioactive standard exceeding nuclide type and activity of a to-be-measured sample. The whole device can complete the whole process from radiation information collection to processing, detection of ore products can be achieved on site, inspection in a laboratory is not needed, time is saved, and the customs clearance detection efficiency of imported ore products can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of ore nuclear radiation detection, and in particular to a mobile ore radiation detection device. Background Art

[0002] Mineral resources are an important foundation for economic development. my country is currently in a stage of rapid industrialization, and the demand for mineral resources continues to rise. However, my country's mineral resource reserves are insufficient, and the quality of some mineral resources is poor. Some mineral products mainly rely on imports.

[0003] The radionuclides contained in imported minerals are mainly primary radionuclides, including three natural radionuclides of uranium, thorium and actinium series and single decay radionuclides K-40, etc. Since mineral products contain natural radioactivity, in order to prevent the radioactivity level in imported mineral products from exceeding the standard and protect the work, life and environmental safety of staff and the public, customs clearance is required to test the types and contents of radionuclides in various mineral products and restrict the entry of mineral products with excessive radioactivity.

[0004] my country needs to import a large number of mineral products every year. When these mineral products are initially screened by the radiation detection system at the customs import port, they trigger alarms because they contain natural radioactive substances and need further identification. At present, laboratory low-background analysis equipment is widely used in China to sample and analyze the mineral products that alarm during the initial screening, and measure the type and activity of radioactive nuclides that exceed the standard. However, this type of laboratory low-background analysis equipment has a long detection time and a long processing cycle, which may be as long as several hours or even days. This seriously reduces the customs clearance inspection efficiency of imported mineral products and increases the workload of customs personnel. Summary of the invention

[0005] Based on this, it is necessary to provide a mobile ore radiation detection device to address the above technical problems. It can measure the type and activity of radioactive nuclides exceeding the standard on-site for ore products that alarm during initial screening. The detection time is short, which can improve the customs clearance inspection efficiency of imported ore products and reduce the workload of customs personnel.

[0006] The present invention provides a mobile ore radiation detection device, comprising a frame, a measuring component for collecting energy spectrum data of a sample to be tested, a data processor for receiving the energy spectrum data sent by the measuring component and analyzing and processing the energy spectrum data to determine the type and activity of radioactive nuclides exceeding the standard of the sample to be tested, and an electrical component for powering the measuring component and the data processor and transmitting information;

[0007] The measuring component, the data processor and the electrical component are all fixedly assembled on the frame, and the measuring component and the data processor are both electrically connected to the electrical component;

[0008] The measuring assembly is provided with a lead chamber, a Marlin cup, a detector and a support with a mounting cavity in the middle;

[0009] The lead chamber comprises a cylindrical main body and a lead cover, the Marlin cup is movably assembled inside the main body, the lead cover is movably assembled on the top of the main body, the support is fixedly connected to the bottom of the main body, and a first assembly hole is arranged at the bottom of the main body;

[0010] The end of the detector having the detection crystal is defined as the top of the detector. The detector passes through the first assembly hole. The top of the detector is located in the concave cylinder of the Marlin cup, and the bottom of the detector is located in the mounting cavity in the middle of the support.

[0011] The concave cylinder of the Marin Cup is in the shape of a circular cone, and the side walls of the main body include a stainless steel layer, a lead layer, a stainless steel layer and a copper layer from the outside to the inside.

[0012] In one embodiment, the support includes a base, a detector mounting tube, a support tube and a limit tube;

[0013] The base is fixedly connected to the frame, the detector mounting tube is sleeved on the outside of the limiting tube, the support tube is sleeved on the outside of the mounting tube, the bottoms of the detector mounting tube, the support tube and the limiting tube are all fixedly connected to the base, and the tops of the detector mounting tube, the support tube and the limiting tube are all fixedly connected to the main body;

[0014] The detector installation tube is in contact with the limiting tube, a gap is provided between the support tube and the detector installation tube to form a lead filling cavity, and a lead filling hole is provided on the side wall of the support tube;

[0015] A first installation cavity is formed inside the detector installation tube, and the inner diameter of the detector installation tube is smaller than the aperture of the first assembly hole;

[0016] The bottom shell of the detector abuts against the top of the limiting cylinder.

[0017] In one embodiment, a sealing member is further provided inside the lead chamber, the sealing member comprises a sealing ring and a sealing ring, and the inner diameter of the sealing ring is equal to the aperture of the first assembly hole;

[0018] The sealing ring is fixedly connected to the bottom inner wall of the main body, the sealing ring is fixedly connected to the middle of the sealing ring, and the sealing ring is sleeved on the detector;

[0019] The Marlin cup abuts the top of the seal.

[0020] In one embodiment, the frame is a three-layer rectangular frame, which is a first layer frame, a second layer frame and a third layer frame from bottom to top;

[0021] The main body is arranged between the third layer frame and the second layer frame, and the support is fixedly connected to the top of the second layer frame;

[0022] Along the vertical direction, baffles are arranged around the frame, and the baffles are fixedly connected to the frame;

[0023] The top of the first frame is fixedly connected with a bottom plate, the top of the third frame is fixedly connected with a top plate, and the top plate is provided with a sample placement hole with an aperture equal to the inner diameter of the main body.

[0024] In one embodiment, the top of the main body is fixedly connected to the bottom of the top plate, and the top opening of the main body is aligned with the sample placement hole;

[0025] Two sets of sliding components for assisting the movement of the lead cover and an elliptical limiting ring for limiting the sliding area of ​​the lead cover are arranged above the top plate. The two sets of sliding components are arranged on both sides of the limiting ring along the sliding direction of the lead cover respectively.

[0026] The lead cover is located in the limiting ring, and the side walls of the limiting ring on both sides along the sliding direction of the lead cover are provided with sliding grooves;

[0027] Each set of sliding components includes a guide rail, a slider, two limit main buckles and two limit auxiliary buckles. The guide rail is parallel to the sliding direction of the lead cover. The guide rail, the limit main buckle and the limit auxiliary buckle are all fixedly connected to the top plate.

[0028] The slider is slidably connected to the guide rail, and the slider is fixedly connected to the lead cover through a connecting piece, and the connecting piece is located in the slide groove;

[0029] The two limiting main buckles are respectively fixedly connected to the two sides of the slider along the moving direction of the guide rail, and the two limiting auxiliary buckles are respectively located at the two ends of the guide rail.

[0030] In one embodiment, the electrical components include a UPS power supply and a terminal block, the data processor is a computer with embedded energy spectrum data analysis and processing software, the UPS power supply is fixedly installed on the top of the first layer frame, and the terminal block is fixedly installed inside the frame;

[0031] The UPS power supply, the detector and the computer are all electrically connected to the terminal block.

[0032] In one embodiment, a printer assembly for printing computer analysis data is also provided between the third frame and the second frame, the printer assembly comprising a printer body, a guide plate and a printing paper storage cavity, and the printer body is electrically connected to the terminal block;

[0033] The printer body is fixedly connected to the top of the second frame, and the printing paper storage cavity is fixedly connected to the bottom of the third frame;

[0034] The baffle plate facing the printer body outlet is provided with a report output port, one end of the guide plate abuts against the printer body outlet, and the other end abuts against the report output port.

[0035] In one embodiment, the material of the Marin cup is polyethylene, the outer wall thickness of the Marin cup is 5 mm, the concave wall thickness of the Marin cup is 3 mm, and the size of the Marin cup is φ150 mm×135 mm;

[0036] The detector is a NaI(Tl) detector;

[0037] The thicknesses of the stainless steel layer, lead layer, stainless steel layer and copper layer of the main body are 3mm, 30mm, 3mm and 2mm respectively.

[0038] In one embodiment, a cover plate is provided above the top plate, the cover plate is provided with a computer installation hole and an operation window having the same shape and size as the horizontal cross-section of the limit ring, the computer is inserted into the installation hole, and the operation window is aligned with the limit ring in the vertical direction.

[0039] In one embodiment, the third frame body is provided with push handles on opposite sides in the horizontal direction, and a plurality of universal wheels are fixedly connected to the bottom of the first frame body;

[0040] The support is also provided with a wiring tube, a wiring hole penetrates the detector installation tube, a support tube and a limit tube;

[0041] The baffles on both sides perpendicular to the baffle where the report output port is located are provided with ventilation holes, and the baffle opposite to the report output port is provided with wiring holes.

[0042] The beneficial effects of the present invention are:

[0043] (1) The mobile ore radiation detection device of the present invention can realize the collection of energy spectrum data of the ore to be tested through the measurement component, and then send the collected energy spectrum data to the data processor through the electrical component, and the data processor analyzes and processes the energy spectrum data to determine the type and activity of the radioactive nuclides exceeding the standard of the sample to be tested. The measurement component, electrical component, and data processor are all centrally fixed on the frame, and the entire device can complete the entire process of radiation information collection and processing, and can realize the detection of ore products that are alarmed during the initial screening of customs inspection on site, without the need for laboratory inspection, saving time and improving the customs clearance inspection efficiency of imported ore products, and can also reduce the workload of customs personnel.

[0044] (2) The concave cylinder of the Marlin cup of the present invention is in the shape of a circular frustum, which facilitates the matching installation of the Marlin cup with the end of the detector having the detection crystal when the Marlin cup is installed in the lead chamber.

[0045] (3) The side wall of the lead chamber body of the present invention includes a stainless steel layer, a lead layer, a stainless steel layer and a copper layer from the outside to the inside, which can effectively reduce the influence of bremsstrahlung radiation on the measurement results after the lead material is excited. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1A schematic diagram of the overall structure of a mobile ore radiation detection device provided in an embodiment of the present invention;

[0047] Figure 2 A schematic diagram of the top view of the structure of a mobile ore radiation detection device provided in an embodiment of the present invention;

[0048] Figure 3 for Figure 2 Schematic diagram of the cross-section structure along the AA plane;

[0049] Figure 4 A schematic diagram of the internal structure of a mobile ore radiation detection device provided in an embodiment of the present invention;

[0050] Figure 5 A schematic diagram of the assembly relationship of the lead chamber, the Marlin cup, the detector and the support provided in an embodiment of the present invention;

[0051] Figure 6 for Figure 5 A schematic diagram of a top view structure;

[0052] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the BB plane;

[0053] Figure 8 A schematic diagram of the assembly relationship between the sliding assembly, the limiting ring, and the lead cover and the top plate provided in an embodiment of the present invention.

[0054] Description of reference numerals: 100, frame; 110, baffle; 111, vent; 112, wiring hole; 120, top plate; 121, limit ring; 122, slide groove; 123, guide rail; 124, slide block; 125, limit main buckle; 126, limit auxiliary buckle; 130, bottom plate; 200, measuring component; 210, lead chamber; 211, main body; 212, lead cover; 213, sealing ring; 214, sealing ring; 220, Marin cup; 230, detector; 240, support; 241, lead cover; 242, lead cover; 243, lead cover; 244, lead cover; 245, lead cover; 246, lead cover; 247, lead cover; 248, lead cover; 249, lead cover; 250, lead cover; 251, lead cover; 252, lead cover; 253, lead cover; 254, lead cover; 255, lead cover; 256, lead cover; 257, lead cover; 258, lead cover; 259, lead cover; 260, lead cover; 261, lead cover; 262, lead cover; 263, lead cover; 264, lead cover; 265, lead cover; 266, lead cover; 267, lead cover; 268, lead cover; 269, lead cover; 270, lead cover; 271, lead cover; 272, lead cover; 273, lead cover; 274, lead cover; 275, lead cover; 276, lead cover; 277, lead cover; 278, lead cover; 279, lead cover; 280, lead cover; 281, lead cover; 282, 1. Base; 242. Detector mounting tube; 243. Support tube; 244. Limiting tube; 245. Lead filling cavity; 246. Lead filling hole; 247. Wiring tube; 300. Data processor; 400. Electrical components; 410. UPS power supply; 420. Terminal block; 500. Printer body; 510. Guide plate; 520. Print paper storage cavity; 530. Report output port; 600. Universal wheel; 700. Cover plate; 710. Operation window; 720. Mounting hole; 800. Push handle. DETAILED DESCRIPTION

[0055] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0056] It should be noted that in the description of the present invention, the directions or positional relationships of “upper”, “lower”, “top” and “bottom” are based on the attached Figure 1 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In one embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a mobile ore radiation detection device of the present embodiment includes a frame 100, a measuring component 200 for collecting energy spectrum data of a sample to be tested, a data processor 300 for receiving the energy spectrum data sent by the measuring component 200 and analyzing and processing the energy spectrum data to determine the type and activity of radioactive nuclides exceeding the standard in the sample to be tested, and an electrical component 400 for supplying power to and transmitting information to the measuring component 200 and the data processor 300; the measuring component 200, the data processor 300 and the electrical component 400 are all fixedly assembled on the frame 100, and the measuring component 200 and the data processing component are both electrically connected to the electrical component 400.

[0058] The mobile ore radiation detection device of this embodiment can collect energy spectrum data of the ore to be tested through the measuring component 200, and then send the collected energy spectrum data to the data processor 300 through the electrical component 400. The data processor 300 analyzes and processes the energy spectrum data to determine the type and activity of radioactive nuclides exceeding the standard in the sample to be tested.

[0059] Among them, the measuring component 200, the electrical component 400, and the data processor 300 are all centrally fixed on the frame 100, so the device of this embodiment can complete the entire process of radiation information collection and processing at the customs inspection site, without the need to send the ore to be tested to the laboratory for inspection, saving time and improving the customs clearance inspection efficiency of imported ore products, and reducing the workload of customs personnel.

[0060] like Figure 5 , Figure 6 and Figure 7As shown, the measuring assembly 200 is provided with a lead chamber 210, a Marlin cup 220, a detector 230 and a support 240 with a mounting cavity in the middle; the lead chamber 210 includes a cylindrical main body 211 and a lead cover 212, the Marlin cup 220 is movably assembled inside the main body 211, the lead cover 212 is movably assembled on the top of the main body 211, the support 240 is fixedly connected to the bottom of the main body 211, and a first assembly hole is arranged at the bottom of the main body 211; it is defined that one end of the detector 230 having a detection crystal is the top of the detector 230, the detector 230 passes through the first assembly hole, the top of the detector 230 is located in the concave cylinder of the Marlin cup 220, and the bottom is located in the mounting cavity in the middle of the support 240.

[0061] The function of the lead chamber 210 is to form a 4π lead shield, effectively reducing the interference of the environment on the detection of the ore to be tested in the Marin cup 220.

[0062] In this embodiment, the concave cylinder of the Marlin cup 220 is in the shape of a circular cone, and the side wall of the main body 211 includes a stainless steel layer, a lead layer, a stainless steel layer, and a copper layer from the outside to the inside. Specifically, the top radius of the concave cylinder of the Marlin cup 220 is slightly smaller than the axial radius of the detector 230, so when the Marlin cup 220 and the detector 230 are matched and installed, there is a small gap between the top of the concave cylinder of the Marlin cup 220 and the detector 230 to avoid friction damage.

[0063] Specifically, the material of the Marin cup 220 of this embodiment is polyethylene, the outer wall thickness of the Marin cup 220 is 5 mm, the concave cylinder wall thickness of the Marin cup 220 is 3 mm, and the size of the Marin cup 220 is φ150 mm×135 mm; the detector 230 is a NaI (Tl) detector 230; the thicknesses of the stainless steel layer, lead layer, stainless steel layer and copper layer of the main body 211 are 3 mm, 30 mm, 3 mm and 2 mm respectively.

[0064] Polyethylene has low background radiation and a material density of 0.92g / cm 3 ~0.96g / cm 3 , the absorption cross section of gamma rays is small, which helps to reduce interference in the measurement process and improve detection efficiency and accuracy. The concave wall thickness of the Marin Cup 220 is 3mm, which can reduce the blocking and absorption of gamma rays. The outer wall thickness of the Marin Cup 220 is 5mm, which can ensure the mechanical strength, durability and thermal stability of the Marin Cup 220.

[0065] The gamma rays emitted from the ore need to penetrate the surrounding ore materials before they can have a chance to enter the detector 230. In this process, the gamma rays will also be absorbed by the surrounding materials. When the ore pile reaches a certain thickness, the gamma rays will be completely absorbed by the surrounding ore materials and cannot be incident on the scintillation crystal of the detector 230. Therefore, the size of the Marlin cup 220 of this embodiment is φ150mm×135mm, ensuring that the rays at the edge can penetrate the inner ore layer and have a chance to enter the detector 230.

[0066] Specifically, the NaI (Tl) detector 230 in this embodiment is composed of an integrated detector 230 (including a sodium iodide crystal and a photomultiplier tube) with a size of φ76mm×76mm, a preamplifier circuit, a multi-channel, a communication circuit, etc. The integrated detector 230 and the circuit are wrapped by a layer of stainless steel casing.

[0067] The concave cylinder of the Marlin cup 220 is in the shape of a circular frustum, so that the Marlin cup 220 can be easily matched with the end of the detector 230 having the detection crystal when it is installed in the lead chamber 210. The side wall of the main body 211 of the lead chamber 210 includes a stainless steel layer, a lead layer, a stainless steel layer and a copper layer from the outside to the inside, which can effectively reduce the influence of the bremsstrahlung radiation after the lead material is excited on the measurement result.

[0068] When the mobile ore radiation detection device of this embodiment is in use, the ore to be tested is placed in the Marlin cup 220, and then the lead cover 212 is opened to put the Marlin cup 220 containing the ore to be tested into the main body 211. After the lead cover 212 is covered, the detector 230 is controlled by the data processor 300 to work and collect energy spectrum data for analysis. After the detection is completed, the data processor 300 can output the detection result.

[0069] It should be noted that imported ore products are usually at the millimeter level.

[0070] During the detection process, the gamma rays emitted by the radioactive nuclides in the ore to be tested pass through the surrounding ore materials, the wall of the Marlin cup 220 and the outer shell of the detector 230, and finally enter the detection crystal of the detector 230, that is, the scintillation crystal. This part of the gamma rays entering the scintillation crystal loses energy in the crystal, and this energy excites the atoms in the scintillation crystal. When these excited atoms de-excite, they emit visible light. The visible light is collected by the photomultiplier tube of the detector 230, converted into an electrical signal, amplified and output to its electronic components. The electronic components amplify, process and convert the received electrical signal into a digital signal. After the digital signal is "pre-processed" inside the detector 230, the energy spectrum information is transmitted to the data processor 300, and the detection result is given after processing and analysis by the data processor 300.

[0071] In one embodiment, the support 240 includes a base 241, a detector mounting tube 242, a support tube 243 and a limiting tube 244; the base 241 is fixedly connected to the frame 100, the detector mounting tube 242 is sleeved on the outside of the limiting tube 244, the support tube 243 is sleeved on the outside of the mounting tube, the bottom of the detector mounting tube 242, the support tube 243 and the limiting tube 244 are all fixedly connected to the base 241, and the top of the detector mounting tube 242, the support tube 243 and the limiting tube 244 are all fixedly connected to the main body 211.

[0072] The detector installation tube 242 forms a first installation cavity, and the inner diameter of the detector installation tube 242 is less than or equal to the aperture of the first assembly hole; the bottom shell of the detector 230 abuts against the top of the limiting tube 244. The support 240 is also provided with a wiring tube 247, and the wiring hole 112 penetrates the detector installation tube 242, the support tube 243 and the limiting tube 244.

[0073] In this embodiment, the detector mounting tube 242 is in contact with the limiting tube 244, and a gap is formed between the support tube 243 and the detector mounting tube 242 to form a lead filling cavity 245, and a lead filling hole 246 is provided on the side wall of the support tube 243. The lead filling cavity 245 is used as a reserved cavity, and when the device of this embodiment is used for detection under a large radiation background, lead can be injected into the lead filling cavity 245 through the lead filling hole 246 to achieve a higher shielding effect.

[0074] Specifically, the detector mounting tube 242 is used to assemble the detector 230, the supporting tube 243 supports the lead chamber 210 and forms a lead-filled cavity 245 with the detector mounting tube 242, the limiting tube 244 supports the detector 230 and provides an installation space for the connector at the front end of the detector 230, and the wiring tube 247 provides a connection space between the connector and the electrical component 400.

[0075] In one embodiment, a seal is further provided inside the lead chamber 210, and the seal includes a sealing ring 213 and a sealing ring 214, and the inner diameter of the sealing ring 213 is equal to the aperture of the first assembly hole; the sealing ring 213 is fixedly connected to the bottom inner wall of the main body 211, and the sealing ring 214 is fixedly connected to the middle of the sealing ring 213, and the sealing ring 214 is sleeved on the detector 230; the Marlin cup 220 abuts against the top of the seal.

[0076] Specifically, the function of the sealing member is to fix the detector 230 to prevent the detector 230 from shaking during the movement of the entire device.

[0077] In one embodiment, the frame 100 is a three-layer rectangular frame, which are respectively a first frame, a second frame and a third frame from bottom to top; the main body 211 is arranged between the third frame and the second frame, and the support 240 is fixedly connected to the top of the second frame; along the vertical direction, baffles 110 are arranged on all sides of the frame 100, and the baffles 110 are fixedly connected to the frame 100; the top of the first frame is fixedly connected to the bottom plate 130, and the top of the third frame is fixedly connected to the top plate 120, and the top plate 120 is provided with a sample placement hole with an aperture equal to the inner diameter of the main body 211.

[0078] The sample placement hole is used to place the Marlin cup 220 in the main body 211, and the baffle 110, the top plate 120 and the bottom plate 130 are used to form a closed space for the entire device to protect the internal components of the device from external collisions.

[0079] In one embodiment, if Figure 8 As shown, the top of the main body 211 is fixedly connected to the bottom of the top plate 120, and the top opening of the main body 211 is aligned with the sample placement hole.

[0080] Two sets of sliding components for assisting in moving the lead cover 212 and an elliptical limiting ring 121 for limiting the sliding area of ​​the lead cover 212 are arranged above the top plate 120. The two sets of sliding components are respectively arranged on both sides of the limiting ring 121 along the sliding direction of the lead cover 212.

[0081] The lead cover 212 is located in the limiting ring 121, and the side walls of the limiting ring 121 along the sliding direction of the lead cover 212 are provided with sliding grooves 122; each group of sliding components includes a guide rail 123, a slider 124, two limiting main buckles 125 and two limiting auxiliary buckles 126, the guide rail 123 is parallel to the sliding direction of the lead cover 212, the guide rail 123, the limiting main buckle 125 and the limiting auxiliary buckle 126 are all fixedly connected to the top plate 120; the slider 124 is slidably connected to the guide rail 123, and the slider 124 is fixedly connected to the lead cover 212 through a connecting piece, and the connecting piece is located in the sliding groove 122.

[0082] Since the lead cover 212 has a large mass, the use of a sliding assembly to slide the lead cover 212 can reduce the labor intensity of users.

[0083] The two limiting main buckles 125 are respectively fixedly connected to the two sides of the slider 124 along the moving direction of the guide rail 123, and the two limiting auxiliary buckles 126 are respectively located at the two ends of the guide rail 123. The limiting main buckle 125 and the limiting auxiliary buckle 126 can cooperate with each other to achieve light locking to prevent the lead cover 212 from sliding by itself.

[0084] In one embodiment, the electrical component 400 includes a UPS power supply 410 and a terminal block 420, the data processor 300 is a computer with embedded energy spectrum data analysis and processing software, the UPS power supply 410 is fixedly installed on the top of the first layer frame, and the terminal block 420 is fixedly installed inside the frame 100; the UPS power supply 410, the detector 230 and the computer are all electrically connected to the terminal block 420.

[0085] The computer with the embedded spectrum data analysis and processing software can intuitively display the processing and analysis results of the spectrum data. In this embodiment, the spectrum data analysis and processing software mainly involves spectrum data smoothing, peak finding, nuclide identification, peak area calculation, specific activity calculation, etc. The UPS power supply 410 can provide uninterrupted power supply for the entire device.

[0086] In one of the embodiments, a printer assembly for printing computer analysis data is also provided between the third frame and the second frame, and the printer assembly includes a printer body 500, a guide plate 510 and a printing paper storage cavity 520, and the printer body 500 is electrically connected to the terminal block 420; the printer body 500 is fixedly connected to the top of the second frame, and the printing paper storage cavity 520 is fixedly connected to the bottom of the third frame; the baffle 110 facing the outlet of the printer body 500 is provided with a report output port 530, and one end of the guide plate 510 is abutted against the outlet of the printer body 500, and the other end is abutted against the report output port 530.

[0087] In one embodiment, a cover plate 700 is further disposed above the top plate 120, and the cover plate 700 is provided with a computer installation hole 720 and an operation window 710 having the same shape and size as the horizontal cross-section of the stop ring 121. The computer is inserted into the installation hole 720, and the operation window 710 is aligned with the stop ring 121 in the vertical direction. The function of the cover plate 700 is to protect the sliding assembly and improve the aesthetics of the entire device.

[0088] In one embodiment, push handles 800 are provided on opposite sides of the third frame 100 in the horizontal direction, and a plurality of universal wheels 600 are fixedly connected to the bottom of the first frame 100. The push handles 800 and the universal wheels 600 facilitate the overall movement of the entire nuclear radiation monitoring device.

[0089] In addition, the baffles 110 on both sides perpendicular to the baffle 110 where the report output port 530 is located are provided with ventilation holes 111, and the baffle 110 opposite to the report output port 530 is provided with wiring holes 112. The ventilation holes 111 are conducive to heat dissipation inside the radiation detection device, and the wiring holes 112 are used for connecting the radiation detection to an external power supply.

[0090] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A mobile ore radiation detection device, characterized in that: The invention comprises a frame (100), a measuring component (200) for collecting energy spectrum data of a sample to be tested, a data processor (300) for receiving the energy spectrum data sent by the measuring component (200) and analyzing and processing the energy spectrum data to determine the type and activity of radioactive nuclides exceeding the standard in the sample to be tested, and an electrical component (400) for supplying power to the measuring component (200) and the data processor (300) and transmitting information; The measuring component (200), the data processor (300) and the electrical component (400) are all fixedly mounted on the frame (100), and the measuring component (200) and the data processor component are both electrically connected to the electrical component (400); The measuring assembly (200) is provided with a lead chamber (210), a Marlin cup (220), a detector (230), and a support (240) having a mounting cavity in the middle; The lead chamber (210) comprises a cylindrical main body (211) and a lead cover (212); the Marlin cup (220) is movably assembled inside the main body (211); the lead cover (212) is movably assembled on the top of the main body (211); the support (240) is fixedly connected to the bottom of the main body (211); and a first assembly hole is provided on the bottom of the main body (211); The detector (230) is defined as having one end of the detection crystal as the top of the detector (230), the detector (230) passes through the first assembly hole, the top of the detector (230) is located in the concave cylinder of the Marlin cup (220), and the bottom is located in the installation cavity in the middle of the support (240); The concave cylinder of the Marlin cup (220) is in the shape of a circular frustum, and the side wall of the main body (211) comprises a stainless steel layer, a lead layer, a stainless steel layer and a copper layer in sequence from the outside to the inside.

2. The mobile ore radiation detection device according to claim 1, characterized in that: The support (240) comprises a base (241), a detector mounting tube (242), a supporting tube (243) and a limiting tube (244); The base (241) is fixedly connected to the frame (100), the detector mounting tube (242) is sleeved on the outside of the limiting tube (244), the support tube (243) is sleeved on the outside of the mounting tube, the bottoms of the detector mounting tube (242), the support tube (243) and the limiting tube (244) are all fixedly connected to the base (241), and the tops of the detector mounting tube (242), the support tube (243) and the limiting tube (244) are all fixedly connected to the main body (211); The detector installation tube (242) is in contact with the limiting tube (244), a gap is provided between the support tube (243) and the detector installation tube (242) to form a lead filling cavity (245), and a lead filling hole (246) is provided on the side wall of the support tube (243); A first installation cavity is formed inside the detector installation tube (242), and the inner diameter of the detector installation tube (242) is smaller than the aperture of the first assembly hole; The bottom shell of the detector (230) abuts against the top of the limiting cylinder (244).

3. The mobile ore radiation detection device according to claim 2, characterized in that: A sealing member is also provided inside the lead chamber (210), the sealing member comprising a sealing ring (213) and a sealing ring (214), the inner diameter of the sealing ring (213) being equal to the aperture of the first assembly hole; The sealing ring (213) is fixedly connected to the inner wall of the bottom of the main body (211), the sealing ring (214) is fixedly connected to the middle of the sealing ring (213), and the sealing ring (214) is sleeved on the detector (230); The Marlin cup (220) abuts against the top of the seal.

4. The mobile ore radiation detection device according to claim 3, characterized in that: The frame (100) is a three-layer rectangular frame, which comprises a first layer frame, a second layer frame and a third layer frame from bottom to top; The main body (211) is arranged between the third layer frame and the second layer frame, and the support (240) is fixedly connected to the top of the second layer frame; Along the vertical direction, baffles (110) are arranged around the frame (100), and the baffles (110) are fixedly connected to the frame (100); The top of the first layer frame is fixedly connected to a bottom plate (130), the top of the third layer frame is fixedly connected to a top plate (120), and the top plate (120) is provided with a sample placement hole having a hole diameter equal to the inner diameter of the main body (211).

5. The mobile ore radiation detection device according to claim 4, characterized in that: The top of the main body (211) is fixedly connected to the bottom of the top plate (120), and the top opening of the main body (211) is aligned with the sample placement hole; Two sets of sliding components for assisting the movement of the lead cover (212) and an elliptical limiting ring (121) for limiting the sliding area of ​​the lead cover (212) are arranged above the top plate (120), and the two sets of sliding components are respectively arranged on both sides of the limiting ring (121) along the sliding direction of the lead cover (212); The lead cover (212) is located inside the limiting ring (121), and the limiting ring (121) has sliding grooves (122) on both side walls along the sliding direction of the lead cover (212); Each set of sliding components comprises a guide rail (123), a slider (124), two limit main buckles (125) and two limit auxiliary buckles (126); the guide rail (123) is parallel to the sliding direction of the lead cover (212); the guide rail (123), the limit main buckle (125) and the limit auxiliary buckle (126) are all fixedly connected to the top plate (120); The slider (124) is slidably connected to the guide rail (123), and the slider (124) is fixedly connected to the lead cover (212) via a connecting piece, and the connecting piece is located in the slide groove (122); The two limiting main buckles (125) are respectively fixedly connected to the two sides of the slider (124) along the moving direction of the guide rail (123), and the two limiting auxiliary buckles (126) are respectively located at the two ends of the guide rail (123).

6. The mobile ore radiation detection device according to claim 5, characterized in that: The electrical component (400) comprises a UPS power supply (410) and a terminal block (420); the data processor (300) is a computer with an embedded energy spectrum data analysis and processing software; the UPS power supply (410) is fixedly installed on the top of the first layer frame; and the terminal block (420) is fixedly installed inside the frame (100); The UPS power supply (410), the detector (230) and the computer are all electrically connected to the terminal block (420).

7. The mobile ore radiation detection device according to claim 6, characterized in that: A printer assembly for printing computer analysis data is also arranged between the third frame and the second frame, the printer assembly comprising a printer body (500), a guide plate (510) and a printing paper storage cavity (520), and the printer body (500) is electrically connected to the wiring terminal block (420); The printer body (500) is fixedly connected to the top of the second frame, and the printing paper storage chamber (520) is fixedly connected to the bottom of the third frame; The baffle plate (110) facing the outlet of the printer body (500) is provided with a report output port (530), one end of the guide plate (510) abuts against the outlet of the printer body (500), and the other end abuts against the report output port (530).

8. The mobile ore radiation detection device according to claim 7, characterized in that: The material of the Marin cup (220) is polyethylene, the outer wall thickness of the Marin cup (220) is 5 mm, the concave wall thickness of the Marin cup (220) is 3 mm, and the size of the Marin cup (220) is φ150 mm×135 mm; The detector (230) is a NaI(Tl) detector (230); The thicknesses of the stainless steel layer, the lead layer, the stainless steel layer and the copper layer of the main body (211) are 3 mm, 30 mm, 3 mm and 2 mm respectively.

9. The mobile ore radiation detection device according to claim 8, characterized in that: A cover plate (700) is also provided above the top plate (120), and the cover plate (700) is provided with a computer installation hole (720) and an operation window (710) having a shape and size equal to that of the horizontal cross-section of the limiting ring (121); the computer is inserted into the installation hole (720), and the operation window (710) is aligned with the limiting ring (121) in the vertical direction.

10. The mobile ore radiation detection device according to claim 9, characterized in that: The third-layer frame (100) is provided with push handles (800) on two opposite sides in the horizontal direction, and the bottom of the first-layer frame (100) is fixedly connected with a plurality of universal wheels (600); The support (240) is also provided with a wiring tube (247), and the wiring hole (112) penetrates the detector installation tube (242), the support tube (243) and the limit tube (244); The baffles (110) on both sides perpendicular to the baffle (110) where the report output port (530) is located are provided with ventilation holes (111), and the baffle (110) opposite to the report output port (530) is provided with a wiring hole (112).

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