An apparatus for detecting radioactive contamination on an inner surface of an object

Abstract

The application discloses a kind of object inner surface radioactive contamination detection devices, it is related to radiation measurement equipment technical field, the shape of detection assembly is designed according to inner cavity shape, the gap between detection surface and the detection surface is uniform, and the inside of the object to be measured can be comprehensively detected. Modular design is used, and maintenance is convenient. The detection assembly can be used as a detection device alone, and can also be matched with a display unit to improve human-computer interaction performance. Rapid detection of the inner cavity contamination of the object to be measured can be achieved. At the same time, the device is simple in principle, easy to operate, efficient in detection, and can locate the pollution position. It is worth popularizing and using in a large area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiation measuring equipment, in particular to an object inner surface radioactive contamination detection device. BACKGROUND

[0002] Radiation monitoring refers to the measurement of the intensity of the rays of radioactive nuclides in the environment, and the analysis and evaluation of the radioactive contamination status. Its purpose is to determine the presence level of radioactive substances in the environment and the possible harm to the environment and the population, so as to take safety measures. It is generally divided into workplace monitoring, effluent monitoring, personal monitoring, emergency monitoring, pollution source monitoring and background monitoring. The measurement items are: total activity measurement, surface contamination measurement and gamma radiation dose rate measurement. According to the object of measurement, it can be divided into water, air, soil, sediment, rock, building materials, waste slag and biological radioactive nuclide measurement. The commonly used measurement methods are nuclear physics method and radiochemistry method.

[0003] The existing radioactive contamination monitoring equipment mainly measures the outer surface of the contaminated object (beta rays), and the inner surface contamination is often ignored. Although portable detection instruments can realize the inner cavity measurement (direct measurement) of some objects to be detected, they still cannot solve the following problems:

[0004] 1. In the case of irregular inner cavity space or limited inner cavity space, the portable instrument may not be able to detect the inner cavity or there may be a detection blind area.

[0005] 2. Low detection efficiency and unreliable results. The handheld detector detects the inner cavity, the detection time is long, and some areas are easy to be missed. For a large number of objects to be detected, the detection work is heavy.

[0006] 3. The contaminated position cannot be automatically recorded and fed back. SUMMARY

[0007] In view of the above problems, the present application provides an object inner surface radioactive contamination detection device for overcoming the above problems or at least partially solving the above problems.

[0008] The present application provides the following solutions:

[0009] An object inner surface radioactive contamination detection device, comprising:

[0010] A mounting frame for carrying various components;

[0011] The detection assembly comprises a data acquisition mainboard, a plurality of data acquisition board cards, a probe shell, a probe backboard and a plurality of detection units, each of the detection units comprises an end window type GM tube; the probe shell is connected with the mounting frame; the data acquisition mainboard and the plurality of data acquisition board cards are connected with the rear end of the detection units through the probe backboard; the plurality of data acquisition board cards are used for one-to-one corresponding conversion of the rays collected by the plurality of detection units into electrical signals, and the data acquisition mainboard is used for processing the electrical signals corresponding to each detection unit to obtain the detection results corresponding to each detection unit.

[0012] Preferably, the outer contour structure of the probe shell is matched with the contour shape of the inner surface of the object to be detected; the plurality of detection units are arranged on the top and periphery of the probe shell, so that the detection surface formed by the plurality of detection units and the measured surface formed by the inner surface of the object to be detected are uniformly spaced.

[0013] Preferably, the detection assembly further comprises a light shielding plate connected with the probe shell and a photoelectric sensor, the photoelectric sensor is used for detecting whether the object to be detected is in place, and the photoelectric sensor triggers the plurality of detection units to perform detection after detecting that the object to be detected is in place.

[0014] Preferably, the end window type GM tube contained in each detection unit is packaged by a steel mesh.

[0015] Preferably, a calibration source unit is further included, the calibration source unit comprises a source frame body, a core screw, a circular magnetic sheet, double-sided adhesive and a radioactive source; the radioactive source is pasted on the source frame body through the double-sided adhesive, and the circular magnetic sheet is connected with the source frame body through the core screw; the circular magnetic sheet is used for being adsorbed with the steel mesh to realize the calibration work of each channel.

[0016] Preferably, the data acquisition mainboard and the data acquisition board cards are connected with the probe backboard through board card mounting studs.

[0017] Preferably, a sheath pressing frame and a dustproof sheath are further included, the sheath pressing frame is connected with the mounting frame in a magnetic attraction manner, so as to press the dustproof sheath on the surface of the detection assembly.

[0018] Preferably, a turnover limiting assembly is further included, the turnover limiting assembly is hinged with the mounting frame through a damping hinge; the object to be detected comprises a safety helmet, and the turnover limiting assembly is used for pressing the brim of the safety helmet and fixing the safety helmet on the detection assembly by means of the damping hinge.

[0019] Preferably, the mounting frame has a wedge structure, and the detection assembly is in an inclined state with the hanging surface of the object to be detected after the mounting frame is connected with the vertical wall surface.

[0020] Preferably, the mounting frame is provided with a connector, and the connector is used to realize the communicable connection of the data acquisition mainboard and the display unit and the connection with the power supply.

[0021] Preferably, the mounting frame is provided with a loudspeaker and an alarm lamp, and the loudspeaker is used to realize the operation reminding of the user when the display unit is not used or not configured, and the loudspeaker and the alarm lamp can realize the sound and light alarm reminding.

[0022] According to the specific embodiments provided by the present application, the following technical effects are disclosed.

[0023] The object inner surface radioactive contamination detection device provided by the embodiment of the present application has the detection assembly with the shape designed according to the shape of the inner cavity, the uniform gap between the detection surface and the detected surface, and the comprehensive detection on the inside of the object to be detected. The modular design is convenient to maintain, the detection assembly can be used as a detection device alone, and can be matched with the display unit to improve the human-computer interaction performance. The object inner surface radioactive contamination detection device can realize the rapid detection on the inner cavity pollution of the object to be detected. Meanwhile, the object inner surface radioactive contamination detection device has the simple principle, the convenient operation, the high detection efficiency and the pollution position positioning function, and is worth popularizing and using in a large area.

[0024] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 is a structure diagram of an object inner surface radioactive contamination detection device provided by the embodiment of the present application;

[0027] Figure 2 is a side view of an object inner surface radioactive contamination detection device provided by the embodiment of the present application;

[0028] Figure 3 is a front view of a detection assembly provided by the embodiment of the present application;

[0029] Figure 4is the sectional view of the detection assembly W-W surface provided by the embodiment of the present application;

[0030] Figure 5 is the structural schematic diagram of the scale source unit provided by the embodiment of the present application;

[0031] Figure 6 is the I partial enlarged schematic view provided by the embodiment of the present application;

[0032] Figure 7 is the electrical control block diagram provided by the embodiment of the present application.

[0033] In the figure: mounting frame 1, detection assembly 2, data acquisition mainboard 21, data acquisition board card 22, probe shell 23, probe backboard 24, detection unit 25, shading plate 26, photoelectric sensor 27, steel mesh 28, board card mounting stud 29, scale source unit 3, source frame main body 31, iron core screw 32, circular magnetic sheet 33, double-sided adhesive 34, radioactive source 35, sheath pressing frame 4, dustproof sheath 5, turnover limiting assembly 6, display unit 7. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0035] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 A kind of object inner surface radioactive contamination detection device provided by the embodiment of the present application, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 The device can include:

[0036] Mounting frame 1, the mounting frame 1 is used to bear each component;

[0037] The detection assembly 2 comprises a data acquisition mainboard 21, a plurality of data acquisition board cards 22, a probe shell 23, a probe backboard 24 and a plurality of detection units 25, each of which comprises an end-window GM tube; the probe shell 23 is connected with the mounting frame 1 through the probe backboard 24; the data acquisition mainboard 21 and the plurality of data acquisition board cards 22 are connected with the rear end of the detection unit 25 through the probe backboard 24; the plurality of data acquisition board cards 22 are used to correspondingly convert the rays collected by the plurality of detection units 25 into electrical signals, and the data acquisition mainboard 21 is used to process the electrical signals corresponding to each detection unit 25, so as to obtain the detection results of the positions corresponding to each detection unit 25.

[0038] Among them, the external contour structure of the probe shell 23 is matched with the contour shape of the inner surface of the object to be detected; the plurality of detection units 25 are arranged on the top and periphery of the probe shell 23, so that the detection surface formed by the plurality of detection units 25 and the measured surface formed by the inner surface of the object to be detected are uniformly spaced.

[0039] The object inner surface radioactive contamination detection device provided by the embodiment of the present application can realize rapid detection of inner surface contamination, adopts modular design, is convenient to maintain, the detection assembly 2 can be used as a detection device alone, and can be matched with the display unit 7 to improve the human-computer interaction performance; the shape of the detection assembly 2 is designed according to the shape of the inner cavity, and the gap between the detection surface and the detected surface is uniform. Each channel is independently scaled and can display the contamination position; fault positioning, description and analysis can be performed; contamination alarm grading can also be realized. In addition, storage log files can also be performed, including measurement records, fault records, alarm records, periodic test reports and the like.

[0040] It can be understood that the device provided by the embodiment of the present application can start detection after the detection assembly 2 is connected with the object to be detected. In order to realize whether the detection assembly 2 is connected with the object to be detected for detection, the detection assembly 2 can further comprise a light shielding plate 26 connected with the probe shell 23 and a photoelectric sensor 27, the photoelectric sensor 27 is used to detect whether the detection assembly 2 is connected with the object to be detected, so as to trigger the plurality of detection units 25 to perform detection after the photoelectric sensor 27 detects that the detection assembly 2 is connected with the object to be detected.

[0041] The detection assembly 2 provided by the embodiment of the present application comprises a plurality of independent detection units 25, each detection unit 25 comprises an end-window GM tube, in order to facilitate the installation of the end-window GM tube, each end-window GM tube included in each detection unit 25 is encapsulated by a steel mesh 28.

[0042] In order to facilitate the calibration of the detection assembly 2, the application can also provide a scale source unit 3, which comprises a source frame body 31, a core screw 32, a circular magnetic sheet 33, double-sided tape 34 and a radioactive source 35; the radioactive source 35 is pasted on the source frame body 31 through the double-sided tape 34, and the circular magnetic sheet 33 is connected with the source frame body 31 through the core screw 32; the circular magnetic sheet 33 is used to be adsorbed with the steel mesh 28, so as to realize the calibration of each channel.

[0043] The device provided by the application adopts a plurality of data acquisition board cards 22 corresponding to each detection unit 25 to collect the data of each detection unit 25, so that the data acquisition mainboard 21 can analyze the data obtained by each data acquisition board card 22, and finally obtain the detection result of each detection unit 25. In order to realize the quick and stable installation of the data acquisition mainboard 21 and the data acquisition board card 22, the application can provide that the data acquisition mainboard 21 and the data acquisition board card 22 are connected with the probe back plate 24 through the board card mounting stud 29.

[0044] In order to protect the detection assembly 2, the application can provide a sheath pressing frame 4 and a dustproof sheath 5, the sheath pressing frame 4 is connected with the mounting frame 1 in a magnetic attraction manner, so as to press the dustproof sheath 5 tightly on the surface of the detection assembly 2.

[0045] It can be understood that the device provided by the application can be used to detect the inner surface of a plurality of different objects to be measured. When the detection assembly 2 is manufactured, only the outer contour of the detection assembly 2 needs to be set according to the structure of the inner surface of the object to be measured. In order to facilitate the connection of the probe shell 23 with the object to be measured, the application can provide a flip limiting assembly 6, which is hinged with the mounting frame 1 through a damping hinge; the object to be measured includes a safety helmet, and the flip limiting assembly 6 is used to press the brim of the safety helmet, and the safety helmet is fixed on the detection assembly 2 by relying on the damping hinge. When the device needs to be connected with other objects to be measured, the corresponding limiting assembly can be set according to the structure and shape of the object to be measured.

[0046] In order to facilitate the hanging of the device on the wall for detection and use, the mounting frame 1 provided by the application can be provided in a wedge-shaped structure, and after the mounting frame 1 is connected with the vertical wall surface, the hanging surface of the detection assembly 2 connected with the object to be measured is in an inclined state. The inclined hanging surface can facilitate the user to connect the safety helmet and other objects to be measured with the detection assembly 2.

[0047] In order to show the detection result in real time, the embodiment of the application further provides a display unit 7, which is communicatively connected with the data acquisition mainboard 21, and the display unit 7 can show the detection result corresponding to each detection unit 25. Further, the mounting rack 1 is provided with a connector, which is used to realize the communicative connection between the data acquisition mainboard 21 and the display unit 7 and the connection with a power supply.

[0048] The device provided by the application is described in detail below by taking the detection of the pollution in the inner cavity of a safety helmet as an example.

[0049] The device can include a detection assembly 2, a display unit 7, a sheath pressing frame 4, a mounting rack 1, a limiting assembly, and a dustproof sheath 5. The device is composed of Figure 1 and Figure 2 As shown in the figures, the sheath pressing frame 4 is pasted with a ring of magnet patches on one side, and the dustproof sheath 5 (a transparent film) is pressed tightly on the surface of the detection assembly 2 through the magnetic attraction with the mounting rack 1, so as to protect the detection assembly 2 from being polluted, and the dustproof sheath 5 is convenient to replace.

[0050] When in use, the safety helmet is sleeved on the detection assembly 2, the limiting assembly 6 is turned over to press the brim of the safety helmet, and the safety helmet is fixed on the detection assembly 2 by means of the damping hinge, so that the measurement of the pollution in the helmet can be started. When not used for wall hanging, the limiting assembly is not needed.

[0051] The display unit 7 is an external device of the detection assembly 2, which can display the detection data and perform operations such as modification and initialization of the system parameters of the detection device. The mounting rack 1 is provided with a connector, which can realize external power supply and communication with the display unit 7. The wedge-shaped structure of the mounting rack 1 makes the hanging surface of the safety helmet form a certain angle with the vertical wall surface, which conforms to the design of human engineering.

[0052] The device uses an end-window type GM tube to detect the beta pollution of the inner surface. The shape of the shell of the detection assembly 2 is designed according to the space in the inner cavity of the safety helmet. The end-window type GM tube is compactly arranged at the top and the periphery of the shell of the detector assembly, so as to ensure that the gap between the detection surface of the end-window type GM tube and the detected surface is uniform, thereby realizing comprehensive detection of the inside of the safety helmet.

[0053] The detection assembly 2 is shown in Figure 3 and Figure 4 The detection assembly 2 includes a data acquisition mainboard 21, a plurality of data acquisition board cards 22, a probe shell 23, a probe backboard 24, a steel mesh 28, a board card mounting stud 29, a light shielding plate 26, a photoelectric sensor 27, and a plurality of detection units 25. Each detection unit 25 contains an end-window type GM tube.

[0054] The end-window GM tube of each detection unit 25 is individually packaged by the steel net 28 for easy maintenance and replacement. The photoelectric sensor 27 automatically senses the safety helmet and triggers the detector to detect the radioactive contamination on the inner surface of the safety helmet. The data acquisition board card 22 is used to convert the rays collected by the end-window GM tube contained in each detection unit 25 into an electric signal. The plurality of detection units 25 are counted by the single data acquisition board card 22. The data acquisition main card further processes the electric signal and performs visual display.

[0055] As shown in Figure 5 , Figure 6 The scale source unit 3 includes a source frame body 31, an iron core screw 32, a circular magnetic sheet 33, double-sided adhesive tape 34, and a radioactive source 35. The outer diameter of the scale source frame is equivalent to that of the end-window GM tube. The radioactive source 35 is attached to the source frame body 31 by means of the double-sided adhesive tape 34. The scale source frame is adsorbed on the surface of the steel net 28 by the magnetic force of the circular magnetic sheet 33 (the iron core screw 32 is a carbon steel screw, which plays a role in installing the magnetic sheet and can enhance the magnetism of the magnet). The scale source frame can conveniently realize the calibration work of each channel.

[0056] The display unit 7 selects a high-definition liquid crystal screen and is equipped with a touch screen, which can visually process the working state of the equipment. The detection results of each end-window GM tube are also fed back to the display interface, which indirectly exposes the pollution position. The electrical control block diagram of the safety helmet inner contamination monitoring equipment is shown in Figure 7 .

[0057] The safety helmet inner contamination monitoring equipment has two working modes:

[0058] 1. The detection assembly 2 can independently measure the safety helmet to be detected after being connected to an external power supply, and the measurement results are announced through voice broadcast.

[0059] 2. The detection assembly 2 is used in connection with the display unit 7. The working data of the safety helmet can be read through the display unit 7, and the system parameters of the equipment and system upgrades can be adjusted according to the user's needs.

[0060] In summary, the object inner surface radioactive contamination detection device provided in the present application has a detection assembly shape designed according to the shape of the inner cavity, uniform gap between the detection surface and the detected surface, and can comprehensively detect the inside of the object to be measured. The device adopts a modular design, is easy to maintain, and the detection assembly can be used as a detection device alone or can be matched with the display unit to improve the human-machine interaction performance. The device can realize rapid detection of the contamination in the inner cavity of the object to be measured. At the same time, the device has simple principle, convenient operation, high detection efficiency, and can locate the pollution position. It is worth popularizing and using in a large area.

[0061] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or "includes a", "including", does not, without more constraints, preclude the existence of additional identical elements other than the listed elements.

[0062] Those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary universal hardware platform from the description of the above embodiments. Based on such an understanding, the technical solutions of the present application can be embodied in a software product form, which can be stored in a storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, and the like, and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in the various embodiments or some parts of the embodiments of the present application.

[0063] The various embodiments in the present specification are described in a progressive manner, and the same or similar parts among the various embodiments can be mutually referred to, and each embodiment mainly describes the differences from other embodiments. In particular, for the system or system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the description of the method embodiments. The above-described system and system embodiments are merely illustrative, and the units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, i.e., they can be located in one place, or can be distributed on multiple network units. According to actual needs, some or all of the modules can be selected to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement without creative labor.

[0064] The above only describes the preferred embodiments of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A device for detecting radioactive contamination on the inner surface of an object, characterized in that, The utility model relates to a kind of radiation detection device, including: Mounting frame for carrying components; Probe assembly, including data acquisition mainboard, several data acquisition board cards, probe shell, probe backboard and several detection units, each detection unit includes a end window GM tube;The probe shell is connected with the mounting frame;The data acquisition mainboard and several data acquisition board cards are connected with the rear end of the detection unit through the probe backboard;Several data acquisition board cards are used to correspondingly convert several detection units respectively collected radiation into electrical signal, and the data acquisition mainboard is used to process the electrical signal corresponding to each detection unit, so as to obtain the detection result corresponding to each detection unit; Wherein, the external contour structure of the probe shell is matched with the contour shape of the inner surface of the object to be measured;Several detection units are arranged on the top and circumference of the probe shell, so that the detection surface formed by several detection units and the measured surface gap formed by the inner surface of the object to be measured are uniform.

2. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, The probe assembly further includes a light shielding plate connected to the probe shell and a photoelectric sensor for detecting whether the object to be measured is in place. After the photoelectric sensor detects that the object to be measured is in place, it triggers several detection units to perform detection.

3. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, The end window GM tube included in each detection unit is packaged by a steel mesh.

4. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 3, wherein, It also includes a scale source unit, which includes a source frame body, a core screw, a circular magnetic sheet, double-sided tape, and a radioactive source. The radioactive source is attached to the source frame body with double-sided tape, and the circular magnetic sheet is connected to the source frame body with the core screw. The circular magnetic sheet is used to be attracted to the steel mesh to calibrate each channel.

5. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, The data acquisition mainboard and the data acquisition board card are connected to the probe backboard through a board mounting stud.

6. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, It also includes a sheath pressing frame and a dustproof sheath. The sheath pressing frame is magnetically connected to the mounting frame to press the dustproof sheath against the surface of the probe assembly.

7. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, It also includes a flip limiting assembly that is hinged to the mounting frame by a damping hinge. The object to be measured includes a safety helmet, and the flip limiting assembly is used to press the brim of the safety helmet and fix the safety helmet on the probe assembly with the damping hinge.

8. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, The mounting frame has a wedge structure. After the mounting frame is connected to a vertical wall, the probe assembly is in an inclined state with the hanging surface of the object to be measured.

9. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 1, wherein, It also includes a display unit that is communicatively connected to the data acquisition mainboard. The display unit can display the detection results corresponding to each detection unit. The mounting frame is provided with a connector for communicatively connecting the data acquisition mainboard and the display unit and connecting to a power supply.

10. The apparatus for detecting radioactive contamination on interior surfaces of objects of claim 9, wherein, The mounting frame is provided with a loudspeaker and an alarm lamp. When the display unit is not used or not configured, the loudspeaker is used to remind the user of the operation, and the loudspeaker and the alarm lamp can achieve audible and visual alarm reminders.

Images