CN209946405U - Performance detection device of vehicle-mounted radioactivity detection system - Google Patents
Performance detection device of vehicle-mounted radioactivity detection system Download PDFInfo
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- CN209946405U CN209946405U CN201920558632.8U CN201920558632U CN209946405U CN 209946405 U CN209946405 U CN 209946405U CN 201920558632 U CN201920558632 U CN 201920558632U CN 209946405 U CN209946405 U CN 209946405U
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Abstract
The utility model discloses a vehicular radioactivity detecting system's performance detection device improves the security of radiation source when the witnessed inspections calibration, realizes detecting calibrating device's remote automation control, reduces the potential radiation hazard risk of radiation source to operating personnel. The technical scheme is as follows: the device comprises a radiation source, a radiation shielding safety container, a support adjusting module and a positioning module, wherein the radiation source provides a radiation field, the radiation source is positioned in the radiation shielding safety container, the radiation shielding safety container shields the radiation field in a closed state and opens the radiation field in an open state, the support adjusting module fixes the radiation source and the radiation shielding safety container together, the positioning module is used for determining the relative position between the radiation source and an instrument to be calibrated, and after the positioning module determines the relative position, the support adjusting module adapts to detection calibration requirements through an adjusting mode including moving or folding.
Description
Technical Field
The utility model relates to an environment ionizing radiation monitoring field, more specifically say, relate to a vehicular radioactivity detection system's on-the-spot calibrating device.
Background
The nuclear safety is an important component of public safety and is an important guarantee for the life and health of people. Nuclear radiation is prone to panic in the general public because it is invisible, untouched and can cause serious health problems or even life-threatening problems. The quantity of radioactive sources in China is in the front of the world, but due to historical reasons, a large number of 'black house' radioactive sources exist, so that the phenomena of radioactive source loss, even industrial raw material pollution and market inflow occur. In addition, in places such as nuclear power stations, radioactive pharmaceutical factories and hospitals which relate to open high-activity radioactive substances, risks such as radioactive substance leakage and pollution exist, and potential threats are caused to the environment and public health safety. Therefore, the enhancement of radioactive material searching, exploring, determining and wide-range dose rate distribution measurement in key places is an important part of nuclear safety work.
The vehicle-mounted radioactivity detection system is a remote radioactivity detection and movable source searching device which is most applied, on one hand, the position of a radioactive substance/radiation source can be searched along with the gradient change of a moving direction according to counting rate or dose rate and the like, on the other hand, the type and activity of radioactive source nuclide and even gamma dose rate can be determined according to an energy spectrum analysis function, and the vehicle-mounted radioactivity detection system is a powerful means for remotely detecting radioactive substances, searching and determining unknown radioactive sources. At present, the device is configured in domestic environment-friendly and safety monitoring systems and even in nuclear power stations so as to ensure that nuclear safety measures such as unknown source exploration, large-range dosage rate distribution measurement and the like are smoothly developed.
Vehicle-mounted radioactivity detection systems are commonly used in complex environments to find and determine the spatial position, radioactive source type, and activity of radioactive materials and unknown radioactive sources. As main technical equipment for radiation environment quality monitoring and nuclear and radiation accident emergency monitoring, the vehicle-mounted radioactivity detection system has various designs and complex and changeable working environments, and the detection distance, the response angle, the detection lower limit, the discrimination capability of a complex radioactive source and the like can influence the accuracy and the reliability of radioactivity detection. Aiming at the application condition of a vehicle-mounted radioactivity detection system, field detection is the most reasonable detection mode; therefore, it is necessary to develop a technical scheme suitable for various vehicle-mounted radioactive detection systems and capable of performing field detection without disassembling the vehicle-mounted radioactive detection systems, and the technical performance of the vehicle-mounted radioactive detection systems is scientifically evaluated to ensure the accuracy and reliability of the values. Meanwhile, technical reference can be provided for departments of environmental protection, safety supervision, nuclear power and the like to purchase corresponding equipment which is suitable for self requirements.
SUMMERY OF THE UTILITY MODEL
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
An object of the utility model is to solve above-mentioned problem, provide a vehicular radioactivity detecting system's performance detection device, the security of radiation source when improving the witnessed inspections calibration has realized detecting calibrating device's remote automation control, has reduced the potential radiation hazard risk of radiation source to operating personnel.
The technical scheme of the utility model is that: the utility model discloses a vehicular radioactivity detection system's performance detection device, the device includes the radiation source, radiation shield safety container, support adjusting module, orientation module, the radiation source provides a radiation field, the radiation source is located radiation shield safety container, radiation shield safety container shields the radiation field when the closed condition and opens the radiation field when opening the state, support adjusting module with the radiation source, radiation shield safety container is fixed together, orientation module is used for confirming the radiation source and treats the relative position between the calibration instrument, adjust the demand through the adjustment mode adaptation including removing or folding including supporting by supporting adjusting module after orientation module confirms the relative position.
According to the utility model discloses an embodiment of vehicular radioactivity detection system's performance detection device, the radiation source by including60Co、137The gamma radionuclide, including Cs, is prepared as a point source or as a source/area source approximating a point source.
According to the utility model discloses a performance detection device's of vehicular radioactivity detection system embodiment, radiation shield safety container is inside and outside bilayer structure, and the inlayer is made by the material that atomic number including the tungsten alloy is higher than certain numerical value, and the outer atomic number including the stainless steel is less than certain numerical value's material and makes.
According to the utility model discloses a performance detection device's of vehicular radioactivity detection system embodiment, the inlayer of radiation shield safety container divide into about two-layer, and the radiation source is fixed in lower floor and arch, two-layer accurate lock from top to bottom.
According to the utility model discloses a vehicular radioactivity detection system's performance detection device's an embodiment supports the adjusting module and comprises four-wheel shallow, cooperation servo motor driven cloud platform.
According to the utility model discloses a performance detection device of vehicular radioactivity detection system's an embodiment, the cloud platform comprises two sets of servo motor control's slide rail to mutually perpendicular's mode equipment follows two directions of level and perpendicular simultaneously under servo motor's drive respectively.
According to the utility model discloses a vehicular radioactivity detection system's performance detection device's an embodiment, orientation module includes portable laser range finder and laser dash receiver, digital display angle chi, and portable laser range finder luminous point is located the coplanar with the radiation source and perpendicular with the calibration direction, and the laser dash receiver is fixed in and treats parallel automobile body surface and the ground juncture in calibration instrument detector crystal surface, and perpendicular with the calibration direction.
According to the utility model discloses a performance detection device's of vehicular radioactivity detection system embodiment, the device still includes the remote control module, connects radiation shield safety container for opening and closing of control radiation shield safety container.
According to the utility model discloses a performance detection device's of vehicular radioactivity detection system embodiment, the device is still including placing the G-M pipe in remote control module's control box, avoids under the radiation shield safety container for detect the real-time dose rate level on every side, in order to prevent that the radiation source from falling out.
The utility model discloses contrast prior art has following beneficial effect: the device of the utility model consists of a gamma radiation source, a radiation shielding safety container, a supporting and adjusting module, a positioning module and a remote control module. The utility model discloses utilize the radiation source preparation technique, develop miniature gamma radiation source, collocation development radiation shielding safety container, support adjusting module, orientation module and remote control module, the integrated detection calibrating device who develops a vehicular radioactivity detecting system. The utility model discloses synthesize and consider relevant law and regulation restriction, operating personnel radiation safety, the required radiation field intensity of calibration, calibration distance, device portability scheduling problem to Monte Carlo simulation is the means of exploring, the size isoparametric of optimal design radioactive source intensity, shielding safety vessel. The utility model discloses add the radiation detection module at control module, whether can the real-time detection gamma radiation source safely playback, the security of radiation source when having improved the witnessed inspections calibration can avoid the radiation source to lose. The utility model discloses synthesize the technique of using different subjects such as mechanical technique, microelectronics, automatic control technique, sensing test technique and software programming technique, realize detecting calibrating device's remote automation control, reduced the potential radiation hazard risk of radiation source to operating personnel.
Drawings
The above features and advantages of the present invention will be better understood upon reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Fig. 1A shows an overall frame diagram of an embodiment of the performance detection apparatus of the vehicle-mounted radioactivity detecting system according to the present invention.
FIG. 1B shows a detailed schematic diagram of the support adjustment module in the embodiment of FIG. 1A.
FIG. 1C shows a detailed schematic diagram of the remote control module in the embodiment of FIG. 1A.
Fig. 2A to 2C show a block diagram of an instantiation of the embodiment shown in fig. 1A from three perspectives, respectively.
Fig. 3A to 3B show schematic views of a radiation shielding security container.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be understood as imposing any limitation on the scope of the present invention.
When using the performance detection device of vehicular radioactivity detection system to carry out performance detection to vehicular radioactivity detection system, need fully consider following factor:
1. first, a calibration reference radiation source should be provided, the activity of which is known. This is a prerequisite for calibration.
2. Secondly, it should be possible to accurately determine the relative spatial relationship (including distance and angle) between the radiation source and the instrument to be calibrated. This is a prerequisite for calibration accuracy.
3. The calibration device should then be flexible to move, and its support parts should have a certain adaptability to different terrains. This is a necessary countermeasure for complex calibration sites.
4. Subsequently, the calibration process should take into account issues such as ground and equipment accessory scatter. This is a necessary correction to further ensure calibration accuracy.
5. Finally, the calibration device should take full account of the regulations and regulations relating to radioactive sources and the radiation safety of the operators, while ensuring a certain portability. This will be a basic guarantee that the calibration work can be carried out smoothly.
Based on the above factors, as shown in fig. 1A, the present embodiment is composed of a gamma radiation source 1, a radiation shielding safety container 2, a support adjusting module 3, a positioning module 4 and a remote control module 5. The gamma radiation source 1 is positioned in the radiation shielding safety container 2, the support adjusting module 3 fixes the gamma radiation source 1, the radiation shielding safety container 2 and the remote control module 5 together, the positioning module 4 is used for determining the relative spatial relationship between the gamma radiation source 1 and an instrument to be calibrated, and after the positioning module 4 determines the distance and the angle, the support adjusting module 3 adapts to the detection calibration requirement through an adjusting mode including moving or folding.
The gamma radiation source 1 provides a radiation field in the direction of 4 pi. The gamma radiation source 1 can be used by nuclear technology, as is customary in the art60Co、137The radioactive intensity of Cs or other gamma radionuclides with longer half-life are prepared as point source or near point source/area source, and the radioactive intensity is combined with the radioactive source management regulations and the detection/calibration requirements, preferably (but not limited to) the V-type source intensity. By replacing the gamma radiation source, the intensity of the radiation field and the energy of the radiation can be changed.
The radiation shielding safety container 2 opens the radiation field in the 4 pi direction as much as possible during detection/calibration, reduces the influence on the ray in the instrument direction, and protects the radiation field in the 4 pi direction during non-calibration. The radiation-shielding safety container 2 is made of tungsten alloy, lead or other material with good shielding performance. Preferably, but not limited to, it is made as an inner-outer double-layer, embedded top-bottom, and in detail, the inner layer of the radiation shielding safe container 2 can be made of a material with a higher atomic number, such as tungsten alloy; the outer layer is made of materials with slightly lower atomic number, such as stainless steel, and the radiation shielding effect is better. The inner layer of the radiation shielding safety container 2 is divided into an upper layer and a lower layer, the radioactive source is fixed on the lower layer and is convex, the upper layer and the lower layer can be precisely buckled, and the shielding effect and the portability of the radiation shielding safety container 2 are fully considered due to the material and the size. Fig. 3A to 3B show a specific example of the radiation shielding security container 2, which can achieve both shielding effect and portability. When the radiation shielding safety container 2 is closed, the radiation field in the 4 pi direction is shielded by the radiation shielding safety container 2, the surface dose rate of any position of the outer layer of the container 2 can be controlled within 1 mu Sv/h, and the corresponding requirements in GB18871-2002 are met; with the radiation shielded security container 2 open, the radiation field in the 4 π direction may be approximated as a point source in the 2 π direction for detection or calibration of the instrument.
The support adjusting module 3 can fix the gamma radiation source 1, the radiation shielding safety container 2 and the remote control module 5 together, and after the positioning module 4 determines the distance and the angle, the support adjusting module can flexibly move and be folded, so that the calibration requirements of field detection are met. As shown in fig. 1B, in a specific example, the support adjusting module 3 is implemented by a four-wheel cart 301, which cooperates with a slide rail 302 and a customized pan-tilt driven by a servo motor 303.
The positioning module 4 is used to determine the relative spatial relationship between the radiation source and the instrument to be calibrated. Can be formed by combining a portable laser range finder, a laser receiving plate, a digital display angle ruler and the like. In one specific example, the device consists of a handheld laser range finder and a laser receiving plate which are oriented in line with the calibration direction, and the light emitting point of the laser range finder and the radiation source are located on the same plane which is perpendicular to the calibration direction. The laser receiving plate is fixed at the junction of the surface of the vehicle body parallel to the crystal surface of the detector of the instrument to be calibrated and the ground and is vertical to the calibration direction.
The remote control module 5 is used to control the opening and closing of the radiation shielded security container 2. As shown in fig. 1C, in order to reduce the scattering problem caused by the device accessories as much as possible, the pan/tilt head is composed of two sets of slide rails 302 controlled by a servo motor, and assembled together in a mutually perpendicular manner, and driven by the servo motor 303, the pan/tilt head can move along the horizontal direction and the vertical direction simultaneously, and is assisted by a photoelectric sensor to detect whether the movement is successful or not. In consideration of the attractive appearance and the waterproof effect, the control box is arranged below the trolley, the large-dose G-M pipe 503 is arranged inside the control box of the remote control module and is kept away from the position right below the radiation shielding safety container, and the large-dose G-M pipe 503 is used for detecting the real-time dose rate level around the trolley so as to prevent accidents such as radiation source falling out.
Fig. 2A to 2C show an instantiated structure of the embodiment of fig. 1A from three perspectives, respectively. The performance testing device shown in FIG. 1A is placed on a cart. The cart is provided with a source-seeking tungsten tank 21 (namely a radiation shielding safety container), a motor 22 for controlling the vertical movement and a motor 23 for controlling the horizontal movement, and a sliding table 24 for vertically moving along the sliding rail and a sliding table 25 for horizontally moving along the sliding rail, which correspond to the two motors respectively. The coupling 26 of the remote control module is used for connecting the motor and the rotating shaft, and the tungsten can lifting arm 27 of the remote control module is used for connecting the upper layer of the radiation shielding safety container, so that the upper layer and the lower layer are opened and closed.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The device is characterized by comprising a radiation source, a radiation shielding safety container, a supporting and adjusting module and a positioning module, wherein the radiation source provides a radiation field, the radiation source is positioned in the radiation shielding safety container, the radiation shielding safety container shields the radiation field in a closed state and opens the radiation field in an open state, the supporting and adjusting module fixes the radiation source and the radiation shielding safety container together, the positioning module is used for determining the relative position between the radiation source and an instrument to be calibrated, and after the positioning module determines the relative position, the supporting and adjusting module adapts to the detection and calibration requirements through an adjusting mode including movement or folding.
2. The performance detection device of a vehicle-mounted radioactivity detection system according to claim 1, wherein the radiation source comprises60Co、137The gamma radionuclide, including Cs, is prepared as a point source or as a source/area source approximating a point source.
3. The vehicle-mounted radioactivity detection system performance detection device of claim 1, wherein the radiation-shielding safety container has an inner and outer double-layer structure, the inner layer is made of a material with an atomic number higher than a certain value, including tungsten alloy, and the outer layer is made of a material with an atomic number lower than a certain value, including stainless steel.
4. The vehicle-mounted radioactivity detection system performance detection device according to claim 3, wherein the inner layer of the radiation-shielding safety container is divided into an upper layer and a lower layer, the radiation source is fixed on the lower layer and protrudes, and the upper layer and the lower layer are precisely buckled.
5. The performance detection device of the vehicle-mounted radioactivity detection system according to claim 1, wherein the support adjusting module comprises a four-wheel cart and a holder driven by a servo motor.
6. The performance testing apparatus of the vehicular radioactivity detecting system of claim 5, wherein the cradle head comprises two sets of slide rails controlled by the servo motors, and the two sets of slide rails are assembled in a mutually perpendicular manner and driven by the servo motors to move simultaneously along the horizontal direction and the vertical direction respectively.
7. The performance detection device of the vehicle-mounted radioactivity detection system according to claim 1, wherein the positioning module comprises a portable laser range finder, a laser receiving plate and a digital display angle ruler, a light emitting point of the portable laser range finder and a radiation source are positioned on the same plane and are perpendicular to the calibration direction, and the laser receiving plate is fixed at the junction of the surface of the vehicle body parallel to the crystal surface of the detector of the instrument to be calibrated and the ground and is perpendicular to the calibration direction.
8. A performance detection apparatus for a vehicle-mounted radiation detection system according to claim 1, further comprising a remote control module connected to the radiation-shielded security container for controlling the opening and closing of the radiation-shielded security container.
9. The vehicle-mounted radioactivity detection system performance detection device of claim 8, wherein the device further comprises a G-M tube disposed in a control box of the remote control module and avoiding right below the radiation-shielding safety container for detecting the ambient real-time dose rate level to prevent the radiation source from falling out.
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| CN201920558632.8U CN209946405U (en) | 2019-04-23 | 2019-04-23 | Performance detection device of vehicle-mounted radioactivity detection system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111209610A (en) * | 2020-02-28 | 2020-05-29 | 北京镧宇科技有限公司 | Radiation protection intelligent shielding system and method |
| CN112074067A (en) * | 2020-08-05 | 2020-12-11 | 中国原子能科学研究院 | Portable X-ray irradiation device for field calibration |
| CN112816813A (en) * | 2020-12-31 | 2021-05-18 | 中国人民解放军总参谋部第六十研究所 | Ionization irradiation verification test system |
| CN113427464A (en) * | 2021-06-01 | 2021-09-24 | 北京盛原通达科技有限公司 | Positioning robot for target instrument detection |
| CN113484901A (en) * | 2021-06-01 | 2021-10-08 | 北京盛原通达科技有限公司 | Positioning method and device for target instrument detection |
| CN113721613A (en) * | 2021-08-23 | 2021-11-30 | 南京航空航天大学 | Robot autonomous source searching method and device based on deep reinforcement learning |
| CN114460625A (en) * | 2022-04-12 | 2022-05-10 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Automatic positioning calibration device and calibration method for channel type radioactivity monitoring system |
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2019
- 2019-04-23 CN CN201920558632.8U patent/CN209946405U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111209610A (en) * | 2020-02-28 | 2020-05-29 | 北京镧宇科技有限公司 | Radiation protection intelligent shielding system and method |
| CN111209610B (en) * | 2020-02-28 | 2024-04-02 | 北京镧宇科技有限公司 | Intelligent shielding system and method for radiation protection |
| CN112074067A (en) * | 2020-08-05 | 2020-12-11 | 中国原子能科学研究院 | Portable X-ray irradiation device for field calibration |
| CN112816813A (en) * | 2020-12-31 | 2021-05-18 | 中国人民解放军总参谋部第六十研究所 | Ionization irradiation verification test system |
| CN113427464A (en) * | 2021-06-01 | 2021-09-24 | 北京盛原通达科技有限公司 | Positioning robot for target instrument detection |
| CN113484901A (en) * | 2021-06-01 | 2021-10-08 | 北京盛原通达科技有限公司 | Positioning method and device for target instrument detection |
| CN113721613A (en) * | 2021-08-23 | 2021-11-30 | 南京航空航天大学 | Robot autonomous source searching method and device based on deep reinforcement learning |
| CN114460625A (en) * | 2022-04-12 | 2022-05-10 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Automatic positioning calibration device and calibration method for channel type radioactivity monitoring system |
| CN114460625B (en) * | 2022-04-12 | 2022-10-28 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Automatic positioning and calibrating device and method for channel type radioactivity monitoring system |
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