CN218158346U - Radioactive waste barrel measuring device - Google Patents
Radioactive waste barrel measuring device Download PDFInfo
- Publication number
- CN218158346U CN218158346U CN202221590324.1U CN202221590324U CN218158346U CN 218158346 U CN218158346 U CN 218158346U CN 202221590324 U CN202221590324 U CN 202221590324U CN 218158346 U CN218158346 U CN 218158346U
- Authority
- CN
- China
- Prior art keywords
- shielding
- waste
- measuring device
- drum
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a radioactive waste bucket measuring device, include: the shielding cylinder is used for placing the waste barrel to be tested, and the side wall of the shielding cylinder is provided with a collimating hole; and the first detection unit is arranged outside the shielding cylinder and used for measuring signals radiated outwards by the waste barrel to be measured in the shielding cylinder. Radioactive waste bin measuring device's a shielding section of thick bamboo can supply the waste bin that awaits measuring to put into, the waste bin that awaits measuring can go up and down to rotate in a shielding section of thick bamboo, let first detection unit measure the radiation of the waste bin that awaits measuring, a shielding section of thick bamboo plays shielding and collimation effect, when eliminating the environment background influence, can reduce crosstalk between the layer to a certain extent, the process of simplifying efficiency scale, the efficiency of acquireing of promotion efficiency matrix has promoted measurement accuracy, measuring error has been reduced.
Description
Technical Field
The utility model relates to a nuclear power field, more specifically say, relate to a radioactive waste bucket measuring device.
Background
Nuclear power plants generate large amounts of low-level radioactive waste during their operation, which needs to be measured for radioactivity, mainly by the intrinsic radioactivity (γ) of the nuclear material itself or by external nuclear reactions, before final disposal.
Generally, a Segmented Gamma Scanning (SGS) technique is adopted, which needs to divide a waste barrel into a plurality of segments for respective measurement, but because the waste barrel with low radioactivity has a large influence on energy spectrum measurement due to the existence of an environmental background, a lead shielding measure needs to be adopted to eliminate the influence of the environmental background.
Large shielded lead chambers are often used in a manner that results in large lead usage, high equipment cost, and poor flexibility. For a high-density and large-volume waste bin, the SGS measurement accuracy is low, and at this time, in order to improve the measurement accuracy and reduce the measurement error, it is generally necessary to improve the measurement time or replace a new high-accuracy measurement mode.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, a radioactive waste bucket measuring device is provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing a radioactive waste drum measurement apparatus comprising:
the device comprises a shielding cylinder, a positioning device and a positioning device, wherein the shielding cylinder is used for placing a waste barrel to be detected, and a collimation hole is formed in the side wall of the shielding cylinder; and
the first detection unit is arranged outside the shielding cylinder and used for measuring signals radiated outwards by the waste barrel to be detected in the shielding cylinder.
In some embodiments, the measuring device further comprises a transmission mechanism for placing the waste drum to be measured and transmitting the waste drum to be measured into the shielding drum.
In some embodiments, the shielding cylinder is positioned above the transmission mechanism, the transmission mechanism comprising a translation seat, a rotation seat, and a lifting seat;
the horizontal position of the translation seat is adjustably installed, the rotating seat is rotatably installed on the lifting seat, and the height position of the lifting seat is adjustably installed on the translation seat;
the rotating seat supplies the waste barrel to be tested to be placed, the lifting seat drives the waste barrel to be tested to lift, and the waste barrel to be tested is placed into the lower end of the shielding barrel.
In some embodiments, the transmission mechanism further comprises a limit switch for limiting the rotation range of the rotary base.
In some embodiments, the limit switch is disposed on the lift block.
In some embodiments, a plurality of clamping grooves with different diameters are formed in the rotating base, the clamping grooves are used for clamping the lower ends of waste barrels to be detected with different diameters, and a sensing mechanism is arranged in each clamping groove to sense and distinguish the diameter of the waste barrel to be detected.
In some embodiments, the measurement device further comprises a base and a platform located above the base;
the transmission mechanism is arranged on the base, and a guide rail for the sliding installation of the translation seat is arranged on the base;
the platform supplies the shielding cylinder is placed, and the platform is provided with a through hole for the waste barrel to be tested to be upwards put into the shielding cylinder.
In some embodiments, at least two collimating holes with different diameters are arranged on the side wall of the shielding cylinder.
In some embodiments, a rotating mechanism for adjusting the rotation direction of the shielding cylinder is arranged on the platform.
In some embodiments, the measuring device further comprises a second detection unit for measuring a radiation signal of the waste bin under test on the base.
Implement the utility model discloses a radioactive waste bucket measuring device has following beneficial effect: radioactive waste bin measuring device's a shielding section of thick bamboo can supply the waste bin that awaits measuring to put into, and the waste bin that awaits measuring can go up and down to rotate in a shielding section of thick bamboo, lets first detection unit measure the radiation of the waste bin that awaits measuring, and a shielding section of thick bamboo plays shielding and collimation effect, when eliminating the influence of environment background, can reduce crosstalk between the layer to a certain extent, simplifies the process of efficiency scale, promotes the efficiency of acquireing of efficiency matrix, has promoted measurement accuracy, has reduced measuring error.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic perspective view of a radioactive waste drum measuring device according to an embodiment of the present invention, when waste to be measured is placed on the radioactive waste drum measuring device;
fig. 2 is a perspective view of the radioactive waste drum measuring device of fig. 1 from another angle.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the radioactive waste drum measuring device in a preferred embodiment of the present invention includes a shielding drum 1 and a first detecting unit 2, the shielding drum 1 is used for the waste drum 3 to be measured to be put into, the side wall of the shielding drum 1 is provided with a collimating hole 11, the first detecting unit 2 is arranged outside the shielding drum 1 to measure the signal radiated from the waste drum 3 to be measured in the shielding drum 1.
Radioactive waste bin measuring device's shielding section of thick bamboo 1 can supply the waste bin 3 that awaits measuring to put into, the waste bin 3 that awaits measuring can go up and down to rotate in shielding section of thick bamboo 1, let first detecting element 2 measure the radiation of waste bin 3 that awaits measuring, shielding section of thick bamboo 1 plays shielding and collimation effect, when eliminating the influence of environment background, can reduce crosstalk between the layer to a certain extent, the process of simplifying the efficiency scale, the efficiency of acquireing of promotion efficiency matrix, the measurement accuracy has been promoted, measuring error has been reduced.
Further, in order to conveniently transport waste drum 3 to be measured, measuring device still includes drive mechanism 4 for the waste drum 3 that supplies to be measured places, and will be measured waste drum 3 and convey to shielding section of thick bamboo 1 in. The transmission mechanism 4 can realize the automatic transmission of the waste barrel 3 to be detected, and reduce the radiation quantity to human bodies.
Preferably, in some embodiments, the measuring apparatus further includes a base 5 and a platform 6 located above the base 5, the transmission mechanism 4 is disposed on the base 5, and a guide rail 51 for slidably mounting the translation base 41 is disposed on the base 5, so that the transmission mechanism 4 can move along the guide rail 51, thereby facilitating control of the moving direction.
Further, platform 6 supplies a shielding section of thick bamboo 1 to place, is equipped with on platform 6 and supplies the waste drum 3 that awaits measuring to upwards put into the through-hole in the shielding section of thick bamboo 1, lets the waste drum 3 that awaits measuring put into shielding section of thick bamboo 1 by the through-hole below.
Let shielding section of thick bamboo 1 be located drive mechanism 4's top, can make things convenient for the waste bin 3 that awaits measuring to be risen by drive mechanism 4 to shielding section of thick bamboo 1 by the below.
The platform 6 is provided with a rotating mechanism for adjusting the steering of the shielding cylinder 1, and further, the side wall of the shielding cylinder 1 is provided with two or more than two collimating holes 11 with different apertures, and the shielding cylinder 1 is rotated to enable the different collimating holes 11 to be opposite to the first detection unit 2.
The first detecting unit 2 can scan the waste bin 3 to be tested passing through the shielding canister 1 through the reserved collimation hole 11. The view field of the collimating aperture 11 is too large, which may increase interlayer crosstalk; if the opening is smaller, the detection efficiency of the current layer is reduced, and the measurement of a high-density and low-radioactivity sample barrel is not facilitated.
Therefore, the open field should balance the detection efficiency with the influence of the interlayer crosstalk, and the interlayer crosstalk should be reduced as much as possible while the detection efficiency of the current layer is ensured.
The range of the first detection unit 2 for receiving the rays can be just limited in the shielding cylinder 1, and also can only cover 2/3 of the cylinder body, so that for sample barrels with different layering numbers, the influence of interlayer crosstalk can be reduced to a certain extent, and the measurement error is reduced.
In some embodiments, the transmission mechanism 4 comprises a translation seat 41, a rotation seat 42, and a lifting seat 43; the horizontal position of the translator base 41 is adjustably mounted, preferably with the translator base 41 slidably mounted on the guide 51.
Further, the rotary base 42 is rotatably mounted on the lifting base 43, and the lifting base 43 is mounted on the translation base 41 in a height position adjustable manner.
In this embodiment, the rotary seat 42 is used for the waste bin 3 to be tested to place, and the lifting seat 43 drives the waste bin 3 to be tested to go up and down, and put into the waste bin 3 to be tested from the lower end of the shielding cylinder 1. The lifting seat 43 is provided with an electric telescopic rod which can be used for lifting and limiting. Preferably, a sliding rod is arranged between the platform 6 and the base 5, and can limit the lifting of the transmission mechanism 4.
Meanwhile, when it is required to rotate the waste bin 3 to be measured, the rotary base 42 is rotated. Preferably, the rotating base 42 is provided with limiting members along the circumferential direction, and each limiting member limits the waste bin 3 to be measured.
The transmission mechanism 4 further includes a limit switch for limiting the rotation range of the rotary seat 42, so as to limit the rotation range of the waste bin 3 to be detected, and the first detection unit 2 can detect from different angles of the waste bin 3 to be detected. The limit switch is arranged on the lifting seat 43, and when the rotating seat 42 touches the limit switch, the driving motor stops working.
The measuring device further comprises a second detecting unit 7 for measuring the radiation signal of the waste bin 3 to be measured on the base 5, in this embodiment, the shielding cylinder 1 is a lead shielding cylinder, of course, the material of the shielding cylinder 1 may also be tungsten, concrete, rubber, etc., and the first detecting unit 2 and the second detecting unit 7 are cadmium zinc telluride detectors.
Be equipped with the draw-in groove of a plurality of different diameters on roating seat 42, supply the lower extreme card of the waste drum 3 that awaits measuring of different diameters respectively to go into, be equipped with induction mechanism in the draw-in groove to the diameter of the waste drum 3 that awaits measuring placed is distinguished in the response, and with this diameter information introduction control computer, according to the waste drum 3 type that awaits measuring of response, singly indicate here to distinguish 200L, 400L bucket, select to go upward to get into the SGS scanning area that shielding section of thick bamboo 1 corresponds, perhaps enter into the high accuracy scanning area that second detection unit 7 corresponds.
The rotary seat 42 has a weighing function, transmits weighing information to the control computer in real time, sets different clamping grooves for 200L and 400L waste barrels to be tested, feeds back information to the control computer according to the clamping groove covering condition, and accordingly obtains the density and barrel type information of the waste barrels to be tested 3.
For a 200L low-density barrel, the barrel generally enters an SGS scanning area, a lead shielding barrel 1 is arranged at the SGS scanning area, and when a waste barrel 3 to be measured is measured, a collimating hole 11 of the lead shielding barrel 1 is rotated to a proper position according to density and surface dose rate information of the barrel, so that measurement accuracy is provided as far as possible under the condition that a shielding effect is guaranteed.
For a 400L high-density barrel, the high-precision scanning area is generally entered, the second detection unit 7 is placed on the detector lifting seat 43, and the rotating seat 42 is matched to perform high-precision scanning on the waste barrel 3 to be detected.
Implement this application radioactive waste bucket detection device, have following advantage:
the shielding barrel 1 shields the waste barrel 3 to be measured by a lead shielding barrel with an upper opening and a lower opening, and can greatly eliminate the influence of the environmental background on the measurement result of the low-level radioactive nuclide of the waste barrel 3 to be measured.
Different measurement modes can be selected according to the information such as the size and the quality of the waste barrel 3 to be detected, and the requirements of sampling inspection and daily detection can be met simultaneously.
The angle that shielding section of thick bamboo 1 just is collimation hole 11 is optional, can be according to the waste drum 3 radioactivity level rotation different collimation hole 11 sizes that await measuring, when reducing the background influence, also can reduce the crosstalk influence that other layers brought in the SGS scanning by the big degree, the process of simplifying the efficiency scale, the acquisition efficiency of promotion efficiency matrix.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A radioactive waste drum measuring device, comprising:
the device comprises a shielding cylinder (1) for placing a waste barrel (3) to be tested, wherein a collimating hole (11) is formed in the side wall of the shielding cylinder (1); and
the first detection unit (2) is arranged outside the shielding cylinder (1) to measure signals radiated outwards by the waste barrel (3) to be detected in the shielding cylinder (1).
2. The radioactive waste container measuring apparatus according to claim 1, further comprising a transmission mechanism (4) for placing the waste container (3) to be measured and transferring the waste container (3) to be measured into the shielding container (1).
3. The radioactive waste drum measuring device according to claim 2, characterized in that the shielding drum (1) is located above the transmission mechanism (4), the transmission mechanism (4) comprising a translation seat (41), a rotation seat (42), and a lifting seat (43);
the horizontal position of the translation seat (41) is adjustably installed, the rotating seat (42) is rotationally installed on the lifting seat (43), and the height position of the lifting seat (43) is adjustably installed on the translation seat (41);
the roating seat (42) supplies waste drum (3) that awaits measuring are placed, lift seat (43) drive waste drum (3) that awaits measuring go up and down, and follow put into shielding section of thick bamboo (1) lower extreme waste drum (3) that awaits measuring.
4. The radioactive waste drum measuring device of claim 3, wherein the transmission mechanism (4) further comprises a limit switch for limiting a rotation range of the rotary seat (42).
5. The radioactive waste drum measuring device of claim 4, wherein the limit switch is provided on the lifting seat (43).
6. The radioactive waste drum measuring device according to claim 3, wherein the rotary base (42) is provided with a plurality of clamping grooves with different diameters for clamping the lower ends of the waste drums (3) to be measured with different diameters, and a sensing mechanism is arranged in each clamping groove for sensing and distinguishing the diameters of the waste drums (3) to be measured.
7. The radioactive waste drum measuring device according to any one of claims 2 to 6, wherein the measuring device further comprises a base (5) and a platform (6) located above the base (5);
the transmission mechanism (4) is arranged on the base (5), and a guide rail (51) for the sliding installation of the transmission mechanism (4) is arranged on the base (5);
platform (6) confession shielding section of thick bamboo (1) is placed, be equipped with the confession on platform (6) waste drum (3) that awaits measuring upwards puts into the through-hole in shielding section of thick bamboo (1).
8. The radioactive waste drum measuring device according to any of claims 1 to 6, characterized in that the shielding drum (1) is provided with at least two collimating holes (11) with different bore diameters on its side wall.
9. The radioactive waste drum measuring device according to claim 7, characterized in that the platform (6) is provided with a turning mechanism for adjusting the turning direction of the shielding drum (1).
10. The radioactive waste drum measuring device according to claim 7, characterized in that the measuring device further comprises a second detection unit (7) for measuring the radiation signal of the waste drum (3) to be measured on the base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221590324.1U CN218158346U (en) | 2022-06-22 | 2022-06-22 | Radioactive waste barrel measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221590324.1U CN218158346U (en) | 2022-06-22 | 2022-06-22 | Radioactive waste barrel measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218158346U true CN218158346U (en) | 2022-12-27 |
Family
ID=84577942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221590324.1U Active CN218158346U (en) | 2022-06-22 | 2022-06-22 | Radioactive waste barrel measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218158346U (en) |
-
2022
- 2022-06-22 CN CN202221590324.1U patent/CN218158346U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104714245B (en) | The half tomographic gamma scan method that middle cool waste bucket measures | |
| CN103308534B (en) | Chromatographic gamma scanning measurement method | |
| CN117405707A (en) | Nuclear waste packaging body dual-mode synchronous scanning detection device | |
| CN109696700B (en) | Extremely low level transuranic nuclide radioactive waste package detection system | |
| CN112558135A (en) | Detection system and method for radioactive characteristics of nuclear facility waste package | |
| CN114038603A (en) | Shielding performance scanning detection device of shielding container | |
| CN110361770B (en) | Detection device and detection method for sector array detector chromatography gamma scanning nuclear waste barrel | |
| US5155356A (en) | Apparatus and method for detecting subterranean leakage from a large storage vessel | |
| CN218158346U (en) | Radioactive waste barrel measuring device | |
| JP3225127B2 (en) | Radioactivity concentration measuring device for radioactive waste storage containers | |
| CN203965630U (en) | A kind of emanometer | |
| KR100925560B1 (en) | Radiation Measurement Apparatus with Three Dimensional Movable Detector | |
| JPH07159541A (en) | Radioactivity concentration measuring apparatus for radioactive waste container | |
| CN111736200B (en) | Scintillator surface array gamma ray waste bin scanning device and using method thereof | |
| KR101997409B1 (en) | Experimental apparatus for radiation shield and the method thereof | |
| JPH04269697A (en) | Non-destructive inspection device for reactor fuel rod | |
| CN112764078B (en) | Nuclear material measuring device | |
| US3774034A (en) | Portable nuclear density-moisture instrument | |
| KR100309251B1 (en) | Inner wall radioactivity measuring device in nuclear reactor | |
| CN116953762A (en) | Multifunctional multi-mode measuring method for large-volume radioactive waste barrel | |
| CN111257920B (en) | Radioactivity detection positioning device, detection system and detection method thereof | |
| KR102626149B1 (en) | Radioactivity measuring apparatus | |
| CN212694086U (en) | Neutron debugging device for nuclear logging instrument | |
| EP2084511B1 (en) | Method of providing a density profile of a plate-shaped body | |
| Mason et al. | A tomographic segmented gamma scanner for the measurement of decommissioning wastes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |