Radioactive waste barrel activity measurement device

Abstract

The present disclosure relates to a radioactive waste barrel activity measuring device, comprising a chassis and a conveying mechanism arranged on the chassis, the bottom of the chassis is connected with walking wheels, a dose measuring mechanism and a detector assembly are arranged on one side of the conveying mechanism on the chassis, the detector assembly is movably arranged on the chassis to be able to approach or move away from the conveying mechanism, a control system is further arranged on the chassis, and the control system is electrically connected with the dose measuring mechanism and the detector assembly respectively. In this way, the device can conveniently adjust the waste barrel and the radioactive activity measuring device for radioactive measurement, and move to the required measurement site according to the requirement. Through the control system, all running actions of the whole measuring device can be controlled, and the data collected by the dose measuring mechanism and the detector assembly are collected, the efficiency of the activity measurement of the radioactive waste barrel is improved, and the measurement operation of the low-activity radioactive waste barrel is conveniently and quickly completed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of radioactive waste detection, in particular to a radioactive waste barrel activity measuring device. BACKGROUND

[0002] The measurement of radioactive waste barrels is an important part of the measurement, calculation, monitoring, inspection, recording and reporting of nuclear materials in nuclear facilities, and is a prerequisite for the storage and processing of nuclear waste. At present, the special equipment for detecting the nuclide type and radioactive level of the internal radioactive contamination of contaminated waste barrels in nuclear facilities mainly includes a layered scanning device, but it has defects such as complex equipment components, long measurement time, and complex operation. SUMMARY

[0003] The purpose of the present disclosure is to provide a radioactive waste barrel activity measuring device to at least partially solve the problems in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a radioactive waste barrel activity measuring device, which comprises a chassis and a conveying mechanism arranged on the chassis, the bottom of the chassis is connected with a walking wheel, a dose measuring mechanism and a detector assembly are arranged on one side of the conveying mechanism on the chassis, the detector assembly is movably arranged on the chassis so as to be able to approach or move away from the conveying mechanism, and a control system is further arranged on the chassis and electrically connected with the dose measuring mechanism and the detector assembly.

[0005] Optionally, a containing bin is arranged on the chassis, and an opening is formed in each of the opposite two side walls of the containing bin, and the conveying mechanism can pass through the opening in the moving direction of the waste barrel.

[0006] Optionally, it further comprises a roller shutter door for closing the opening.

[0007] Optionally, the conveying device comprises a first conveying roller, a rotating measuring roller and a second conveying roller arranged in sequence in the moving direction of the waste barrel, the first conveying roller and the second conveying roller are rotatably arranged on both sides of the rotating measuring roller through a driving mechanism, the driving mechanism is electrically connected with the control system, and the conveying mechanism has an unfolded state and a folded state,

[0008] In the unfolded state, the first conveying roller, the rotating measuring roller and the second conveying roller are all arranged in the horizontal direction, and the first conveying roller and the second conveying roller are respectively located on both sides of the chassis and extend out of the containing bin from the opening;

[0009] In the folded state, the first and second conveying roller tables are rotated to be perpendicular to the rotation measurement roller table to be received in the containing bin.

[0010] Optionally, a first weighing roller table for weighing the waste barrel is arranged between the first conveying roller table and the rotation measurement roller table, and a second weighing roller table for weighing the waste barrel is arranged between the second conveying roller table and the rotation measurement roller table.

[0011] Optionally, the ends of the first and second conveying roller tables are respectively connected with a support frame, and the two support frames are respectively rotatably connected to the ends of the first and second conveying roller tables, and the support frames are arranged to be arranged in a vertical direction in the unfolded state and are respectively rotated to be attached to the surfaces of the first and second conveying roller tables in the folded state.

[0012] Optionally, a slide rail is arranged on the chassis, and the detector assembly is slidingly connected to the slide rail, and the slide rail is arranged to extend towards the rotation measurement roller table.

[0013] Optionally, a driving motor connected to the chassis is further included for driving the chassis to move in a horizontal direction relative to the walking wheels.

[0014] Optionally, the conveying mechanism has a plurality of adjacent rollers, and the radioactive waste barrel activity measurement device further includes a power mechanism for driving the rollers to rotate clockwise or counterclockwise, and a roller rotation controller is further arranged on the chassis and is electrically connected to the power mechanism and the control system, respectively.

[0015] Optionally, a step ladder extending to the ground is connected to the side of the chassis close to the control system.

[0016] Through the above technical solution, the device adopts an overall scanning measurement method for radioactive activity analysis, can conveniently adjust the radioactive waste barrel and the radioactive activity measurement device for radioactive measurement, and can be moved to the required measurement site according to the requirements. Through the control system, all running actions of the entire measurement device can be controlled, and the data collected by the dose measurement mechanism and the detector assembly can be collected, thereby improving the efficiency of activity measurement of the radioactive waste barrel and conveniently and quickly completing the measurement operation of the low-activity radioactive waste barrel.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, illustrate the present disclosure and, together with the specific embodiments described below, serve to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0019] Figure 1 is a structural schematic diagram of a radioactive waste barrel activity measurement device provided by an exemplary embodiment of the present disclosure without a containing bin;

[0020] Figure 2 is a structural schematic diagram of a radioactive waste barrel activity measurement device provided by an exemplary embodiment of the present disclosure;

[0021] Figure 3 is a structural schematic diagram of a conveying mechanism in a folded state in a radioactive waste barrel activity measurement device provided by an exemplary embodiment of the present disclosure.

[0022] Legend of reference signs

[0023] 1 chassis 11 walking wheel

[0024] 2 conveying mechanism 21 first conveying roller

[0025] 22 rotating measurement roller 23 second conveying roller

[0026] 24 first weighing roller 25 second weighing roller

[0027] 26 support frame 3 dose measurement mechanism

[0028] 4 detector assembly 5 control system

[0029] 6 containing bin 61 opening

[0030] 7 slide rail 8 roller rotation controller

[0031] 9 step ladder DETAILED DESCRIPTION

[0032] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0033] In the present disclosure, the orientation words "up", "down", "top", "bottom" are defined based on the actual direction of use of the relevant components, unless otherwise stated. "Inner" and "outer" are in terms of the contour of the respective components themselves. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequentiality and importance. In the present disclosure, the following description refers to the drawings, and unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] Referring to Figures 1 to 3 The present disclosure provides a radioactive waste barrel activity measuring device, which can include a chassis 1 and a conveying mechanism 2 arranged on the chassis 1, and the bottom of the chassis 1 is connected with walking wheels 11, and the chassis 1 can be transferred to different places by a tractor to work. A dose measuring mechanism 3 and a detector assembly 4 are arranged on one side of the conveying mechanism 2 on the chassis 1. Specifically, the dose measuring mechanism 3 can simultaneously satisfy the measurement of four groups of surface dose meters, and the detector assembly 4 is movably arranged on the chassis 1 to be close to or away from the conveying mechanism 2. The detector assembly 4 can include a detector and a motor for driving the detector to move. The chassis 1 is also provided with a control system 5, and the control system 5 is electrically connected with the dose measuring mechanism 3 and the detector assembly 4 respectively. The control system 5 can control the movement of the detector assembly 4 to adjust the detection distance of the detector assembly 4 from the waste barrel.

[0035] Through the above technical solution, the device adopts a whole gamma scanning measurement method to analyze the radioactivity, which can conveniently adjust the radioactive waste barrel and the radioactivity measuring device used for radioactive measurement, and move to the required measurement site according to the requirements. Through the control system, all running actions of the whole measuring device can be controlled, and the data collected by the dose measuring mechanism and the detector assembly are collected, which improves the efficiency of the activity measurement of the radioactive waste barrel, and the measurement operation of the low-activity radioactive waste barrel is completed conveniently and quickly.

[0036] As an exemplary embodiment of the present disclosure, referring to Figure 2 The chassis 1 can be provided with a containing bin 6, and opposite two side walls of the containing bin 6 are respectively provided with openings 61. The conveying mechanism 2 can pass through the openings 61 in the moving direction of the waste barrel, so that the waste barrel can be conveyed into the containing bin 6 for radioactivity measurement. The containing bin 6 can be divided into a measurement area and a control area. The conveying mechanism 2 is located in the measurement area, and the control system 5 is located in the control area. The operator can enter the control area to control the control system 5.

[0037] Further, the measuring device can further include a roller shutter door for closing the opening 61. When the measuring device needs to be transported, the conveying mechanism 2 can be folded into the containing bin 6, and then the roller shutter door is closed.

[0038] In some embodiments, the conveying device 2 can include a first conveying roller 21, a rotating measurement roller 22 and a second conveying roller 23 arranged in sequence along the moving direction of the waste barrel, wherein the first conveying roller 21 and the second conveying roller 23 are used to carry the radioactive waste barrel to be conveyed, and in addition, due to the uneven distribution of substances in the waste barrel, it is necessary to analyze the waste barrel during the measurement process, and the rotating measurement roller 22 can drive the waste barrel to rotate, further, the dose measurement mechanism 3 and the detector assembly 4 are arranged close to the rotating measurement roller 22, and the radioactive activity measurement of the waste barrel can be completed on the rotating measurement roller 22. The first conveying roller 21 and the second conveying roller 23 are respectively arranged on both sides of the rotating measurement roller 22 through the driving mechanism, and the driving mechanism is electrically connected with the control system 5. The conveying mechanism 2 has an unfolded state and a folded state. In the unfolded state, as shown in Figure 1 , the first conveying roller 21, the rotating measurement roller 22 and the second conveying roller 23 are arranged in the horizontal direction, and the first conveying roller 21 and the second conveying roller 23 are respectively located on both sides of the chassis 1 and extend out of the accommodating cavity 6 from the opening 61; in the folded state, as shown in Figure 3 , the first conveying roller 21 and the second conveying roller 23 are respectively rotated to be perpendicular to the rotating measurement roller 22 to be accommodated in the accommodating cavity 6. The waste barrel conveying device is arranged in a foldable structure, which is in an unfolded state during work, and is in a folded state and is accommodated in the accommodating cavity during non-working or transfer, thereby reducing the space occupancy and increasing the flexibility, facilitating the movement of the measurement device to the required measurement site, and further improving the convenience of the waste barrel measurement process. Specifically, by controlling

[0039] Further, as shown in Figure 1 , a first weighing roller 24 for weighing the waste barrel can be arranged between the first conveying roller 21 and the rotating measurement roller 22, and a second weighing roller 25 for weighing the waste barrel can be arranged between the second conveying roller 23 and the rotating measurement roller 22. The first weighing roller 24 and the second weighing roller 25 can be respectively used for weighing the waste barrel. The end portion of the first weighing roller 24 and the second weighing roller 25 close to the rotating measurement roller 22 can be respectively provided with a position detection sensor for detecting the position of the waste barrel to detect whether the waste barrel enters the weighing roller.

[0040] Wherein, as shown in Figure 2 , Figure 3, the end portions of the first and second conveying roller tracks 21 and 23 can be connected with support frames 26, the two support frames 26 are respectively rotatably connected to the end portions of the first and second conveying roller tracks 21 and 23, the support frames 26 are configured to be arranged in a vertical direction in the unfolded state to support the first and second conveying roller tracks 21 and 23 on the ground, and are respectively rotated to be attached to the surfaces of the first and second conveying roller tracks 21 and 23 in the folded state to fold up the support frames 26, thereby reducing the space occupancy in the non-working or transferring state. In the embodiments of the present disclosure, as shown in Figure 3 , the support frames 26 are rotated by 270° clockwise or counterclockwise to be attached to the upper surfaces of the first and second conveying roller tracks 21 and 23, and in some other embodiments, the support frames 26 can also be rotated by 90° to be attached to the lower surfaces of the first and second conveying roller tracks 21 and 23, and the above-mentioned manners can all achieve folding. Since the first and second conveying roller tracks 21 and 23 are respectively located on the two sides of the chassis 1 and are in a suspended state during working, in order to increase the stability and reliability of the equipment, the support frames 26 are provided to support the heavy waste barrels.

[0041] Further, referring to Figure 1 , the chassis 1 can be provided with slide rails 7, and the probe assembly 4 can be slidably connected to the slide rails 7, the slide rails 7 are arranged to extend towards the rotating measurement roller track 22 to be able to adjust the distance between the probe assembly 4 and the waste barrel during measurement.

[0042] According to some embodiments, the measurement device can further include a driving motor connected with the chassis 1, for driving the chassis 1 to move in the horizontal direction relative to the walking wheels 11, so that after the measurement device is moved to the required measurement site, the position of the chassis 1 in the horizontal direction can be adjusted by the driving motor, thereby more accurately adjusting the position of the measurement device.

[0043] Among them, referring to Figure 1 , the conveying mechanism 2 can have a plurality of adjacent rollers, and the radioactive waste barrel activity measurement device can further include a power mechanism for driving the rollers to rotate clockwise or counterclockwise, thereby facilitating the conveying of the waste barrel from different positions. During the measurement process, the waste barrel can be placed at the measurement initial position of the conveying mechanism 2, transferred by the rollers to the rotating measurement roller track 22 for measurement, and returned to the measurement initial position on the same side after the measurement is completed, or transferred by the rollers to the roller end position on the other side. The chassis 1 is further provided with roller rotation controllers 8, and the roller rotation controllers 8 are respectively electrically connected with the power mechanism and the control system 5. In the embodiments of the present disclosure, the chassis 1 is provided with a plurality of roller rotation controllers 8, and each roller rotation controller 8 can control 4 groups of rollers at the same time. In addition, the power mechanism can be a motor.

[0044] Further, referring to Figure 1、 Figure 2 The side of the chassis 1 close to the control system 5 can be connected with a step ladder 9 extending to the ground, facilitating the operator to enter the storage bin 6.

[0045] When the radioactive activity of the waste barrel containing slightly radioactive waste needs to be measured, the device is first initialized, the distance between the detector assembly 4 and the waste barrel is adjusted, the dose measuring mechanism 3 measures the environmental background to ensure that it is below the alarm value, the detector assembly 4 is started to ensure that the blank measurement dead time is less than 15%. Then the waste barrel is transported to the rotating measurement roller 22, the rotating measurement roller 22 is started to rotate, after 10s, the horizontal distance of the detector assembly 4 is determined according to the dose rate value at 10cm; whether an absorption sheet needs to be added is determined according to the measurement dead time. After the adjustment is completed, the measurement is re-performed, and the measurement time is 10min. Finally, the overall scanning measurement is performed through the software, the automatic data analysis processing is performed by using the analysis algorithm, and finally the analysis report is obtained.

[0046] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept range of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection range of the present disclosure.

[0047] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combination manners are not described again in the present disclosure.

[0048] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as it does not deviate from the idea of the present disclosure, and it should be considered as disclosed by the present disclosure.

Claims

1. A radioactive waste drum activity measurement device, characterized by, The device comprises a chassis and a conveying mechanism arranged on the chassis, the bottom of the chassis is connected with walking wheels, a dose measuring mechanism and a detector assembly are arranged on one side of the chassis and located at the conveying mechanism, the detector assembly is movably arranged on the chassis to be able to approach or move away from the conveying mechanism, a control system is further arranged on the chassis and electrically connected with the dose measuring mechanism and the detector assembly respectively, a containing bin is arranged on the chassis, openings are respectively arranged on the opposite two side walls of the containing bin, the conveying mechanism can pass through the openings in the moving direction of the waste barrel, The conveying mechanism comprises a first conveying roller, a rotating measuring roller and a second conveying roller arranged in sequence in the moving direction of the waste barrel, the first conveying roller and the second conveying roller are rotatably arranged on the two sides of the rotating measuring roller through driving mechanisms, the driving mechanisms are electrically connected with the control system, the conveying mechanism has an unfolded state and a folded state, In the unfolded state, the first conveying roller, the rotating measuring roller and the second conveying roller are all arranged in the horizontal direction, the first conveying roller and the second conveying roller are respectively located on the two sides of the chassis and extend out of the containing bin from the openings; In the folded state, the first conveying roller and the second conveying roller are respectively rotated to be perpendicular to the rotating measuring roller to be received in the containing bin, The ends of the first conveying roller and the second conveying roller are respectively connected with support frames, the two support frames are rotatably connected at the ends of the first conveying roller and the second conveying roller respectively, the support frames are configured to be arranged in the vertical direction in the unfolded state and respectively rotated to be attached to the surfaces of the first conveying roller and the second conveying roller in the folded state.

2. The radioactive waste drum activity measurement apparatus of claim 1, wherein, A roller shutter door is further arranged to close the openings.

3. The radioactive waste drum activity measurement apparatus of claim 1, wherein, First and second weighing rollers are arranged between the first conveying roller and the rotating measuring roller and between the second conveying roller and the rotating measuring roller respectively for weighing the waste barrel.

4. The radioactive waste drum activity measurement apparatus of claim 1, wherein, A slide rail is arranged on the chassis, the detector assembly is slidably connected on the slide rail, and the slide rail extends towards the rotating measuring roller.

5. The radioactive waste drum activity measurement apparatus of claim 1, wherein, A driving motor connected with the chassis is further arranged to drive the chassis to move in the horizontal direction relative to the walking wheels.

6. The radioactive waste drum activity measurement apparatus of claim 1, wherein, The conveying mechanism has a plurality of adjacent rollers, the radioactive waste barrel activity measuring device further comprises a power mechanism for driving the rollers to rotate clockwise or counterclockwise, and a roller rotation controller is further arranged on the chassis and electrically connected with the power mechanism and the control system respectively.

7. The radioactive waste drum activity measurement apparatus of claim 1, wherein, A step ladder extending to the ground is connected with the side of the chassis close to the control system.

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