CN112007877A - Online detection and sorting system and method for radioactive pollutants - Google Patents
Online detection and sorting system and method for radioactive pollutants Download PDFInfo
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- CN112007877A CN112007877A CN202010994852.2A CN202010994852A CN112007877A CN 112007877 A CN112007877 A CN 112007877A CN 202010994852 A CN202010994852 A CN 202010994852A CN 112007877 A CN112007877 A CN 112007877A
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- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 33
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 30
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 101
- 230000005855 radiation Effects 0.000 claims abstract description 55
- 238000012546 transfer Methods 0.000 claims abstract description 32
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 42
- 238000007599 discharging Methods 0.000 claims description 12
- 230000032258 transport Effects 0.000 claims description 10
- 230000007480 spreading Effects 0.000 claims description 7
- 239000000356 contaminant Substances 0.000 claims 3
- 238000005259 measurement Methods 0.000 abstract description 24
- 239000002901 radioactive waste Substances 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005025 nuclear technology Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
- 239000012852 risk material Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/38—Collecting or arranging articles in groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C2201/00—Measures preceding sorting according to destination
- B07C2201/006—Hazardous Substances, e.g. checking for contamination, explosives, anthrax
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
- B07C2501/0054—Sorting of waste or refuse
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- Measurement Of Radiation (AREA)
- Sorting Of Articles (AREA)
Abstract
The invention relates to the technical field of radioactive waste treatment devices, and discloses an online radioactive pollutant detection and sorting system.A material distribution component and a transfer component cooperate to distribute materials to different positions, a feed hopper is positioned in the middle of a conveying belt, a second radiation detector can be arranged at the upstream position for background measurement, environmental interference is eliminated, radiation detection reliability is improved, interference is eliminated, and radiation detection reliability is improved; in the online detection and sorting method for radioactive pollutants, accurate demarcation of polluted materials and uncontaminated materials can be ensured by controlling the beat of a motor and combining the synergistic action of a material distributing assembly and a transferring assembly, so that the fixed-distance operation of a conveying belt and the batch sorting of the materials are realized, the online detection and sorting of the radioactive pollutants are reliable in measurement and accurate in sorting, and the online detection and sorting method for the radioactive pollutants has great popularization value and wide application prospect.
Description
Technical Field
The invention relates to the technical field of radioactive waste treatment devices, in particular to an online detection and sorting system for radioactive pollutants.
Background
With the rapid development of the application of nuclear technology in China, a large amount of radioactive waste is generated, how to safely and effectively treat or utilize the waste becomes an increasingly difficult problem, and even the sustainable and healthy development of nuclear energy utilization is severely restricted.
In the technical field of radioactive waste treatment devices, a large amount of special funds are invested by the country, and relevant important subject researches such as nuclear facility retirement and radioactive waste treatment are developed, wherein a high cost performance solution control treatment technology for batch-like uniform granular radioactive pollutants is one of important research directions, the radioactive pollution is focused to be detected quickly and accurately, parts which exceed standards and are high in risk in a mass of radioactive wastes can be separately sorted out to be exported for special treatment, and other parts which meet the standards and are low in risk or even have no risk are sorted out to be simply treated or recycled.
At present conventional practice is usually to stack the material on conveyer, and usually follow conveyer's material receiving end straight flow to the discharge end in addition, sets up detection device in the middle part, and linear constant speed conveying, letter sorting, the accuracy is very unsatisfactory to this kind of technical thinking sorting accuracy, and the material piles up the radiometric measurement also too inaccurate.
Therefore, there is a need in the art for an online radioactive pollutant detection and sorting system with reliable measurement and accurate sorting.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides an online radioactive pollutant detecting and sorting system with reliable measurement and accurate sorting, and accordingly provides an online radioactive pollutant detecting and sorting method using the online radioactive pollutant detecting and sorting system.
The invention is realized by the following technical scheme:
the utility model provides an online detection of radioactive contamination selects separately system, includes the conveyer belt by motor drive, conveyer belt length direction's the top that leans on well position is equipped with the feeder hopper, the conveyer belt is kept away from the top of the low reaches position of feeder hopper and is equipped with first radiation detector, first radiation detector's detection face is parallel with the conveyer belt, the below of conveyer belt discharge end is equipped with divides the material subassembly, the below that divides the material subassembly discharge gate is equipped with transports the subassembly, divide the material subassembly and transport subassembly synergism and can divide the material to different positions.
Further, the transfer assembly comprises a first transfer belt and a second transfer belt which are different in discharging position.
Further, divide the material subassembly to include single-row mouth formula branch hopper, the feed inlet that single-row mouth formula divides the hopper is located the below of conveyer belt discharge end, the side that single-row mouth formula divides the hopper is equipped with slewing mechanism, slewing mechanism can drive the bin outlet pendulum that single-row mouth formula divides the hopper to the top of first transportation area or second transportation area receiving end.
Further, divide the material subassembly to include that double row formula divides the hopper, double row formula divides the feed inlet of hopper to be located the below of conveyer belt tail end, double row formula divides two discharge gates of hopper to transport the top of taking the material end with the second towards first transportation area respectively, orientation the discharge gate department in first transportation area is equipped with the first baffle that can be controlled to open and close, orientation the discharge gate department in second transportation area is equipped with the second baffle that can be controlled to open and close.
Further, the first baffle plate is driven by a first reciprocating mechanism, and the second baffle plate is driven by a second reciprocating mechanism.
Furthermore, the detection boundary of the first radiation detector, which is far away from the feed hopper, is superposed with the discharging start line at the discharging end of the conveying belt.
Furthermore, a second radiation detector is arranged above the upstream position, far away from the feed hopper, of the conveying belt, the detection surface of the second radiation detector is parallel to the conveying belt, and the detection area of the second radiation detector is equal to that of the first radiation detector.
Furthermore, two ends of the first radiation detector are provided with a first collimation mechanism, and the calibration direction of the first collimation mechanism is vertical to the detection surface of the first radiation detector; and second collimating mechanisms are arranged at two ends of the second radiation detector, and the adjusting direction of the second collimating mechanisms is vertical to the detection surface of the second radiation detector.
Furthermore, a material spreading plate capable of limiting the height of the material is arranged between the feed hopper and the first radiation detector and in a position close to the feed hopper.
An online detection and sorting method for radioactive pollutants, which utilizes the online detection and sorting system for radioactive pollutants, comprises the following steps:
A. starting the motor to enable the conveyer belt to run, and starting the first irradiation detector;
B. the materials to be sorted fall on the conveying belt through the feed hopper;
C. the conveying belt conveys the material to the position below the first irradiation detector;
D. the first irradiation detector judges whether the material is polluted or not, the judgment time is t1, and the material distribution assembly and the transfer assembly determine the position where the material is to be distributed according to the judgment result;
E. the conveying belt runs at a fixed distance, and the running distance is the length L of the detection range of the first irradiation detector in the conveying direction of the conveying belt;
F. and D, stopping the motor, returning to the step D and circulating.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention comprises a conveyer belt driven by a motor, wherein a feed hopper is arranged above the middle position of the conveyer belt in the length direction, a first radiation detector is arranged above the downstream position of the conveyer belt far away from the feed hopper, the detection surface of the first radiation detector is parallel to the conveyer belt, a material distribution component is arranged below the discharge end of the conveyer belt, a transfer component is arranged below the discharge port of the material distribution component, the material distribution component and the transfer component can distribute and convey materials to different positions under the synergistic action, the feed hopper is positioned in the middle of the conveyer belt, a second radiation detector can be arranged at the upstream position for carrying out background measurement, environmental interference is eliminated, and radiation detection reliability is improved, a mechanism for flattening the materials is also arranged between the feed hopper and the first radiation detector, so that the stacking of the materials to be detected; in the online detection and sorting method for radioactive pollutants, accurate demarcation of polluted materials and uncontaminated materials can be ensured by controlling the beat of a motor and combining the synergistic action of a material distributing assembly and a transferring assembly, so that the fixed-distance operation of a conveying belt and the batch sorting of the materials are realized, the online detection and sorting of the radioactive pollutants are reliable in measurement and accurate in sorting, and the online detection and sorting method for the radioactive pollutants has great popularization value and wide application prospect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the overall apparatus of the present invention;
FIG. 2 is a left side view of one embodiment of a dispensing assembly and a transfer assembly of the present invention;
FIG. 3 is a left side view of another embodiment of a dispensing assembly and a transfer assembly of the present invention;
fig. 4 is a control flow chart of the present invention.
Reference numbers and corresponding part names in the drawings:
1-motor, 2-conveyer belt, 3-feed hopper, 4-first radiation detector, 41-first collimation mechanism, 5-material distribution component, 51-rotating mechanism, 52-first material distribution hopper, 53-second material distribution hopper, 54-first baffle, 55-second baffle, 56-first reciprocating mechanism, 57-second reciprocating mechanism, 6-transfer component, 61-first transfer belt, 62-second transfer belt, 7-material laying plate, 71-third reciprocating mechanism, 8-second radiation detector, 81-second collimation mechanism and 9-material.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
The utility model provides an online detection of radioactive pollutant selects separately system, include by motor 1 driven conveyer belt 2, 2 length direction's of conveyer belt top by the well position is equipped with feeder hopper 3, 2 top of keeping away from the low reaches position of feeder hopper 3 of conveyer belt are equipped with first radiation detector 4, the detection face of first radiation detector 4 is parallel with conveyer belt 2, the below of 2 discharge ends of conveyer belt is equipped with divides material subassembly 5, the below of dividing the 5 discharge gates of material subassembly is equipped with transports subassembly 6, divide material subassembly 5 and transport 6 synergism and can transport material 9 branch to different positions. It can be understood that the feed hopper 3 is located in the middle of the conveying belt 2, the upstream position can be used for background measurement, interference is eliminated, and radiation detection reliability is improved, the radiation detector is parallel to the conveying belt 2, so that the influence of 9 adjacent materials on the measurement of the material to be detected is minimum, the measurement of online detection and sorting of radioactive pollutants can be reliable and accurate, a first transfer belt 61 and a second transfer belt 62 which are different in unloading positions are arranged in the actual implementation process, whether the materials reach the standard or not is also distinguished, the radiation gradient can be further set, three or more transfer belts are arranged, the grading treatment of the materials 9 is realized, the treatment difficulty is further reduced, and the treatment efficiency is improved.
Further, the transfer module 6 includes a first transfer belt 61 and a second transfer belt 62 having different discharge positions. Furthermore, the material distributing assembly 5 comprises a single-outlet type material distributing hopper, a feeding hole of the single-outlet type material distributing hopper is positioned below a discharging end of the conveying belt 2, a rotating mechanism 51 is arranged on the side surface of the single-outlet type material distributing hopper, and the rotating mechanism 51 can drive a discharging hole of the single-outlet type material distributing hopper to swing to the position above a material receiving end of the first transferring belt 61 or the second transferring belt 62. As shown in fig. 2, it can be understood that the rotating mechanism 51 drives the discharge opening to swing, and the discharge opening is directed to the first transfer belt 61 or the second transfer belt 62 according to the determination result of the first radiation detector 4, so as to realize the diversion of the out-of-standard high-risk material 9 and the in-standard material 9.
Further, the transfer module 6 includes a first transfer belt 61 and a second transfer belt 62 having different discharge positions. Furthermore, the distributing component 5 comprises a double-outlet distributing hopper, the feeding hole of the double-outlet distributing hopper is positioned below the tail end of the conveying belt 2, two discharging holes of the double-outlet distributing hopper face the upper part of the receiving end of the first transferring belt 61 and the second transferring belt 62 respectively, a first baffle 54 capable of being controlled to open and close is arranged at the discharging hole facing the first transferring belt 61, and a second baffle 55 capable of being controlled to open and close is arranged at the discharging hole facing the second transferring belt 62. Further, the first shutter 54 is driven by a first reciprocating mechanism 56, and the second shutter 55 is driven by a second reciprocating mechanism 57. As shown in figure 3, it can be understood that the two reciprocating driving mechanisms are used for respectively driving the opening and closing of the corresponding baffle plates corresponding to the discharge holes, the action is small, the whole distribution hopper does not need to swing in a large range, the service life can be prolonged, and noise can be avoided.
Further, the detection boundary of the first radiation detector 4 far from the feed hopper 3 coincides with the discharge start line of the discharge end of the conveyor belt 2. It can be understood that the detection boundary of the first radiation detector 4 far from the feed hopper 3 coincides with the discharging start line of the discharging end of the conveyer belt 2, which is beneficial to accurately distinguishing the boundaries of two adjacent 9 materials to the maximum extent, and simultaneously, the accurate sorting of the current 9 materials to be measured and the accurate in-place conveying of the next 9 materials to be measured are realized, and the current 9 materials to be measured adopt a static measurement mode, compared with a mobile measurement mode, the current material to be measured can approach the true value of measurement to the maximum extent.
Furthermore, a second radiation detector 8 is arranged above the upstream position of the conveying belt 2 far away from the feeding hopper 3, the detection surface of the second radiation detector 8 is parallel to the conveying belt 2, and the detection area of the second radiation detector 8 is equal to that of the first radiation detector 4. It will be appreciated that the second radiation detector 8, acting as a background measurement zone detection mechanism, may be used to exclude the effects of the operating environment, map a background measurement zone, and normalize the two detector measurements by calibration, therefore, the two detectors can be subtracted in the same dimension during measurement, a lower and more accurate background count value is obtained, and the lower detection limit of the equipment is better, namely as shown in figure 1, an S1 blanking area, an S2 material 9 measuring area, an S3 background measuring area are formed, a background measuring area is arranged, the physical parameters and the installation environment of the device are basically consistent with those of the material 9 measuring area and are standardized with the counting value of the material 9 measuring area, under the radiation measurement state, the influence of the conveyer belt 2, the surrounding environment and the like on the measurement truth value can be effectively reduced, compared with the single detector measurement effect, the measurement accuracy can be improved by at least 1 order of magnitude, and the open type conveying measurement mode of the batch materials 9 is facilitated.
Further, two ends of the first radiation detector 4 are provided with first collimating mechanisms 41, and the calibration direction of the first collimating mechanisms 41 is perpendicular to the detection plane of the first radiation detector 4; the two ends of the second radiation detector 8 are provided with a second collimating mechanism 81, and the tuning direction of the second collimating mechanism 81 is perpendicular to the detection surface of the second radiation detector 8. It can be understood that the collimating mechanisms are arranged at the two ends of the detector, the angle of the collimating mechanisms is perpendicular to the detection surface of the detector, the collimating mechanisms are made of anti-penetration materials such as lead plates, the radiation of materials outside the range of the collimating mechanisms at the two ends can be avoided, namely, the detector only receives the radiation of 9 pieces of materials to be detected within the projection area of the collimating mechanisms, the size of the 9 pieces of materials to be detected is the vertical shadow area of the detector on the conveying belt 2, the length in the conveying direction is the length L of the detector, and the structure enables the measuring influence of the 9 pieces of adjacent materials on the 9 pieces of materials to be detected to be minimum.
Further, a material spreading plate 7 capable of limiting the height of the material 9 is arranged between the feed hopper 3 and the first radiation detector 4 and close to the feed hopper 3. It can be understood that the material spreading plate 7 capable of limiting the height of the material 9 is arranged, so that the height limiting operation of mass uniform granular pollutants on the conveying mechanism can be quickly and efficiently realized, and further the material 9 can be spread, the material spreading plate can be detachably connected with the rack, a plurality of common heights such as 2cm, 5cm and 7cm are set, the material spreading plate is reasonably selected according to the particle size of the material 9, and the efficiency calibration can be considered, so that the whole measurement process is consistent with the initial calibration condition, and the authenticity accuracy of the measurement reliability is ensured; of course, the third reciprocating mechanism 71 may be arranged to control the protruding length, so as to realize the distance between the material spreading plate 7 and the conveyor belt 2.
The invention also provides an online detection and sorting method for radioactive pollutants, which utilizes the online detection and sorting system for radioactive pollutants and comprises the following steps:
A. starting the motor 1 to enable the conveyer belt 2 to run, and starting the first irradiation detector;
B. the material 9 to be detected and sorted falls on the conveyer belt 2 through the feed hopper 3;
C. the conveyer belt 2 transports the material 9 to the lower part of the first irradiation detector;
D. the first irradiation detector judges whether the material 9 is polluted or not, the judgment time is t1, and the material distribution component 5 and the transfer component 6 determine the position where the material 9 is to be distributed according to the judgment result;
E. the conveyer belt 2 runs at a fixed distance, and the running distance is the length L of the detection range of the first irradiation detector in the conveying direction of the conveyer belt 2;
F. the motor 1 stops, returns to step D and loops.
Further, in step D, after determining the position to be transported and performing the corresponding action, it is determined whether the action is in place again after a delay t2 (i.e. whether the discharge opening in the first material distribution assembly 5 embodiment swings in place, and whether the baffle that needs to be discharged is opened and the other baffle is closed in the second material distribution assembly 5 embodiment), where the delay t2 is generally 0.5 ± 0.25s, which is the maximum value of the time required for measuring the material in place for many times, in order to ensure that the action is in place, and various manners such as a place sensor and a stroke sensor may be adopted as the determination manner. In addition, the value of t1 is usually 1 +/-0.75 s, and is generally determined according to the statistical fluctuation of the measured value of the detector, so that the efficiency and the precision are both considered.
Further, in step E, a link for determining whether distance transmission is in place may be further provided, which is determined according to the transmission speed and the transmission distance L, and theoretically t3 is L/V, but in order to leave a safety margin and simultaneously take efficiency into consideration, t3 is generally 1.5 × L/V, and as for the determination mode, various modes such as an encoder and a stroke sensor on the motor 1 may be adopted.
It is noted that, herein, relational terms such as first and second, and the like may 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention, and do not indicate or imply that the components or mechanisms so referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus are not to be considered as limiting the invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides an online detection of radioactive pollutant selects separately system, its characterized in that includes by motor (1) driven conveyer belt (2), conveyer belt (2) length direction's the top that leans on well position is equipped with feeder hopper (3), the top that the low reaches position of feeder hopper (3) was kept away from in conveyer belt (2) is equipped with first radiation detector (4), the detection face and conveyer belt (2) of first radiation detector (4) are parallel, the below of conveyer belt (2) discharge end is equipped with divides material subassembly (5), the below of dividing material subassembly (5) discharge gate is equipped with transports subassembly (6), divide material subassembly (5) and transport subassembly (6) synergism and can carry material (9) to different positions.
2. An online radioactive contaminant detection and sorting system according to claim 1, wherein the transfer assembly (6) comprises a first transfer belt (61) and a second transfer belt (62) with different discharge positions.
3. The online radioactive pollutant detecting and sorting system according to claim 2, wherein the material distributing assembly (5) comprises a single-outlet type material distributing hopper, a feeding hole of the single-outlet type material distributing hopper is located below a discharging end of the conveying belt (2), a rotating mechanism (51) is arranged on the side surface of the single-outlet type material distributing hopper, and the rotating mechanism (51) can drive a discharging hole of the single-outlet type material distributing hopper to swing to the position above a material receiving end of the first conveying belt (61) or the second conveying belt (62).
4. The online radioactive pollutant detection and sorting system according to claim 2, wherein the distribution component (5) comprises a double-outlet distribution hopper, the feed inlet of the double-outlet distribution hopper is located below the tail end of the conveying belt (2), two discharge outlets of the double-outlet distribution hopper are respectively towards the upper part of the receiving end of the first transfer belt (61) and the second transfer belt (62), a first baffle (54) which can be controlled to open and close is arranged at the discharge outlet of the first transfer belt (61), and a second baffle (55) which can be controlled to open and close is arranged at the discharge outlet of the second transfer belt (62).
5. An online radioactive contaminant detection and sorting system according to claim 4, wherein the first baffle (54) is driven by a first reciprocating mechanism (56), and the second baffle (55) is driven by a second reciprocating mechanism (57).
6. An online radioactive pollutant detection and sorting system according to any one of claims 1 to 5, characterized in that the detection boundary of the first radiation detector (4) far from the feed hopper (3) coincides with the discharge start line of the discharge end of the conveyor belt (2).
7. An online radioactive pollutant detection and sorting system according to any one of the preceding claims 6, characterized in that a second radiation detector (8) is arranged above the upstream position of the conveyor belt (2) far away from the feed hopper (3), the detection surface of the second radiation detector (8) is parallel to the conveyor belt (2), and the detection area of the second radiation detector (8) is equal to the detection area of the first radiation detector (4).
8. An online radioactive pollutant detection and sorting system according to claim 7, characterized in that the first radiation detector (4) is provided with first alignment mechanisms (41) at two ends, and the alignment direction of the first alignment mechanisms (41) is perpendicular to the detection surface of the first radiation detector (4); and two ends of the second radiation detector (8) are provided with second collimating mechanisms (81), and the adjusting direction of the second collimating mechanisms (81) is vertical to the detection surface of the second radiation detector (8).
9. An online radioactive contaminant detection and sorting system according to claim 6, wherein a material spreading plate (7) for limiting the height of the material (9) is disposed between the feed hopper (3) and the first radiation detector (4) and near the feed hopper (3).
10. An online radioactive pollutant detection and sorting method, which is characterized in that the online radioactive pollutant detection and sorting system of any one of claims 1 to 9 is used, and comprises the following steps:
A. starting the motor (1) to enable the conveyer belt (2) to operate, and starting the first irradiation detector;
B. the materials (9) to be sorted fall on the conveying belt (2) through the feed hopper (3);
C. the conveyor belt (2) transports the material (9) to the position below the first irradiation detector;
D. the first irradiation detector judges whether the material (9) is polluted or not, the judgment time is t1, and the material distribution assembly (5) and the transfer assembly (6) determine the position where the material (9) is to be distributed according to the judgment result;
E. the conveying belt (2) runs at a fixed distance, and the running distance is the length L of the detection range of the first irradiation detector in the conveying direction of the conveying belt (2);
F. and D, stopping the motor (1), returning to the step D and circulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010994852.2A CN112007877B (en) | 2020-09-21 | 2020-09-21 | On-line detection and separation system and method for radioactive pollutants |
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| CN202010994852.2A CN112007877B (en) | 2020-09-21 | 2020-09-21 | On-line detection and separation system and method for radioactive pollutants |
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| CN112007877A true CN112007877A (en) | 2020-12-01 |
| CN112007877B CN112007877B (en) | 2024-04-30 |
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| CN114130704B (en) * | 2021-09-17 | 2023-08-18 | 中国人民解放军63653部队 | Sorting equipment and vehicle |
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| Publication number | Publication date |
|---|---|
| CN112007877B (en) | 2024-04-30 |
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