CN212483884U

CN212483884U - Surface pollution measuring instrument

Info

Publication number: CN212483884U
Application number: CN202021688188.0U
Authority: CN
Inventors: 郑永男; 张小彬
Original assignee: Beijing Haiyang Bochuang Technology Co ltd
Current assignee: Beijing Haiyang Bochuang Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-02-05
Anticipated expiration: 2030-08-13

Abstract

The application relates to a surface pollution measuring instrument, which comprises a radiation detector, a fixing piece and a data acquisition system; the number of the radiation detectors is multiple, and the radiation detectors are arranged in the same plane and form a detector group together; the fixing piece integrally fixes the detector group; each radiation detector is in communication connection with the data acquisition system; the data acquisition system is adapted to integrate the data from each of the radiation detectors and locate the position of the radiation source. A plurality of radiation detectors are firmly arranged in the same plane through fixing pieces, and are integrated in a modular mode to be spliced into a detector group, so that the detection area of the device is increased, and the expansion is facilitated. Each radiation detector independently transmits data to the data acquisition system through a data line, and the data acquisition system combines each detector to give the radiation level and the distribution thereof in a sensitive area, so that testers in the field can quickly obtain the position of the radiation source and the approximate radiation intensity.

Description

Surface pollution measuring instrument

Technical Field

The application relates to the technical field of radiation detection, in particular to a surface pollution measuring instrument.

Background

The existing surface pollution measuring instrument usually uses an integral probe to give an integral estimation to the radiation level in a sensitive detection area, and the position of the instrument needs to be continuously adjusted by implementing personnel in the field during actual use, so that the position of a radiation source can not be rapidly positioned by the counting rate difference of the instrument at different positions, and unnecessary troubles are caused to the technical personnel in the field.

Disclosure of Invention

In view of the above, the present application provides a surface contamination measuring apparatus, which includes a radiation detector, a fixing member, and a data acquisition system; the number of the radiation detectors is multiple, and the radiation detectors are arranged in the same plane and form a detector group together; the fixing piece integrally fixes the detector group; each radiation detector is in communication connection with the data acquisition system; the data acquisition system is adapted to integrate the data from each of the radiation detectors to locate the position of the radiation source.

In one possible implementation, the radiation detector includes a scintillation crystal, a light guide device, and a photoelectric conversion device; the light guide device is of a cube structure, the scintillation crystal is attached to the light guide device, and the photoelectric conversion device is fixedly arranged on the surface of the light guide device.

In one possible implementation manner, the plurality of radiation detectors are arranged in the transverse direction and the longitudinal direction by the number of M × N.

In one possible implementation, the fixing member includes an upper structural member and a lower structural member; the upper structure component and the lower structure component are respectively arranged on two opposite sides of the detector group, the two opposite sides of the upper structure component and the two opposite sides of the lower structure component are provided with blocking frames with the same structures, the blocking frames respectively extend to the opposite sides, and the blocking frames are arranged outside the detector group in an enclosing mode.

In a possible implementation manner, a plurality of square holes with the same size are formed in corresponding positions of the upper structural member and the lower structural member, and the top and the bottom of each radiation detector correspond to one square hole respectively.

In a possible implementation, the inside multichannel bead that is provided with of the frame that blocks of lower structure, the bead sets up the interval department of square hole, the bead is criss-cross setting, is latticedly, and each check with radiation detector's structure phase-match.

In a possible implementation manner, the two sides of the upper structural member and the lower structural member are provided with extension lugs, and mounting holes are formed in the extension lugs at equal intervals.

In a possible implementation manner, a through hole is formed in one side, adjacent to the upper structural member, of the light guide device, an output port of each radiation detector is connected with a data line, and the other end of each data line penetrates through the through hole and the square hole to be connected to a corresponding interface of the data acquisition system.

In one possible implementation, the upper structural member and the lower structural member are bolted.

The utility model has the advantages that: a plurality of radiation detectors are firmly arranged in the same plane through fixing pieces, and are integrated in a modular mode to be spliced into a detector group, so that the detection area of the device is increased, and the expansion is facilitated. Each radiation detector independently transmits data to the data acquisition system through a data line, and the data acquisition system combines each detector to provide a sensitive area, so that testers in the field can quickly obtain the position of the radiation source and the approximate radiation intensity.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic perspective view of a surface contamination measuring instrument according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

Fig. 1 shows a perspective view of a surface contamination measuring instrument according to an embodiment of the present application. As shown in fig. 1, the surface contamination measuring instrument includes: radiation detector 1, mounting and data acquisition system. The number of the radiation detectors 1 is multiple, the radiation detectors 1 are arranged in the same plane and form a detector together, the fixing piece integrally fixes the detector group, a data line is connected between the radiation detectors 1 and the data acquisition system, and the data acquisition system integrates and processes data of each radiation detector 1 and positions the position of a radiation source.

In this embodiment, a plurality of radiation detectors 1 are modularly integrated and spliced into a detector group, so that the detection area of the device is increased, and the expansion is facilitated. The specific structure of the fixing piece is not specifically limited, and only the fixing piece is required to be capable of firmly placing the detector groups in the same plane, so that the radiation detectors 1 can obtain more accurate data, and unnecessary influence of height drop on positioning of the radiation source is reduced. Every radiation detector 1 autonomous working, during actual measurement, transmit data for data acquisition system through the data line independently, data acquisition system combines each detector to give the sensitive area in, count and total count in every detecting element, accomplish promptly and survey radiation distribution and to the detection of radiation overall level, the testing personnel in the art can obtain the position that the radiation source was located and the radiation intensity roughly fast, under the prerequisite of guaranteeing current performance, fix a position the radiation source fast, the data line not only is used for with data transmission to information acquisition system, still for radiation detector 1 power supply.

It should be further noted that the data acquisition system may use a gaussian fitting method for the data transmitted by the plurality of radiation detectors 1, the counting rate of the radiation detector 1 is the largest and is located near the top of the gaussian surface, and the calculation of the remaining radiation detectors 1 is rapidly reduced on the gaussian surface from near to far according to the distance of the radiation source, that is, a single radiation source is rapidly and accurately positioned.

In one embodiment, the radiation detector 1 includes a scintillation crystal, a light guide device, and a photoelectric conversion device. The light guide device is of a cube structure, the scintillation crystal is attached to the lower portion of the light guide device, and the photoelectric conversion device is fixedly arranged on the surface of the light guide device.

In this embodiment, the optical waveguide of the radiation detector 1 is configured as a square structure, the radiation detector 1 with the square structure is more favorable for modularized splicing, and the square structure is more convenient for batch production compared with other regular shapes, and the cost is not increased without reason.

Further, the radiation detector 1 is the prior art, only brief explanation is made herein, a double-flash crystal is attached to the bottom surface of the light guide device, a reflective layer is attached to each of the other surfaces, the photoelectric conversion device is a silicon photomultiplier, alpha and beta rays enter or pass through the double-flash crystal, energy is deposited in the double-flash crystal to enable the crystal to emit light, light emitted by the double-flash crystal is transmitted to the silicon photomultiplier through the light guide device, the silicon photomultiplier converts collected optical signals into electrical signals, the electrical signals are processed by a subsequent circuit, then, the signal circuit transmits the converted electrical signals to the information acquisition system, and the information acquisition system performs data integration and processing.

As shown in fig. 1, in one embodiment, the plurality of radiation detectors 1 are arranged in the transverse and longitudinal directions by M × N.

In this embodiment, the arrangement of M × N, that is, the arrangement number of the radiation detectors 1 in the transverse direction and the longitudinal direction, and the number of the radiation detectors 1 that can be fixed inside the fixing member after the fixing member is produced and assembled are determined, and when other fixing members are not replaced or selected, the M × N, that is, the maximum radiation detector 1 accommodation amount of the fixing member is the largest, and the detection area is the largest, so that the surface contamination measuring instrument in the embodiment of the present application is more beautiful, and the structural design is more reasonable.

As shown in fig. 1, in one embodiment, the fixing member comprises an upper structural member 3 and a lower structural member 4; the upper structural member 3 and the lower structural member 4 are respectively arranged on two opposite sides of the detector group, the two opposite sides of the upper structural member 3 and the lower structural member 4 are provided with blocking frames 7 with the same structure, the blocking frames 7 respectively extend towards the opposite sides, and the blocking frames 7 are enclosed outside the detector group.

In this embodiment, the fixing member is selected from the upper structural member 3 and the lower structural member 4 which are detachably connected, and the specific detaching manner is not particularly limited, and it is only required to ensure that a practitioner in the field can easily detach and mount the surface contamination measuring apparatus. Go up the frame 7 that blocks of structure 3 and lower structure 4 can be reasonable the cover establish in the detector group outside can, block the concrete height of frame 7 and do not make concrete injecing, only need ensure that it can firmly fix the detector group, the detector group wholly does not produce rock can.

In one specific embodiment, a plurality of square holes with the same size are formed in the corresponding positions of the upper structural member 3 and the lower structural member 4, and the top and the bottom of each radiation detector 1 correspond to one square hole respectively.

In this embodiment, a plurality of square holes have been seted up on upper structure piece 3, the lower structure piece 4, and the setting of the square hole of upper structure piece 3 is used for reserving enough space for the data line connects to radiation detector 1, avoids equipment to walk the difficult scheduling problem of line, moreover, sets up the square hole and can also the using material wisely, further reduce cost, because radiation detector 1 bottom has seted up the entrance window, so the square hole of lower structure piece 4 does not shelter from the entrance window.

In one embodiment, as shown in fig. 1, a plurality of ribs are arranged inside the blocking frame 7 of the lower structural member 4, the ribs are arranged at intervals of square holes, the ribs are arranged crosswise and in a grid shape, and each grid is matched with the structure of the radiation detector 1.

In this embodiment, a plurality of criss-cross ribs are arranged in the blocking frame 7 of the lower structural member 4, the whole structure is in a grid shape, the ribs are arranged at intervals of a plurality of square holes, and the ribs are arranged to limit each radiation detector 1, so that each radiation detector 1 is only matched with a group of grids corresponding to each other up and down.

As shown in fig. 1, in one embodiment, the upper structural member 3 and the lower structural member 4 are provided with extending lugs 5 at two sides, and the extending lugs 5 are provided with mounting holes 6 at equal intervals.

In one embodiment, a through hole 2 is formed in one side of the light guide device, which is adjacent to the upper structural member 3, one end of the data line is connected to an output port of the detector main body, and the other end of the data line passes through the through hole 2 and is connected to a corresponding interface of the data acquisition system.

In one embodiment, the upper structural member 3 and the lower structural member 4 are bolted together.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A surface contamination measuring instrument is characterized by comprising a radiation detector, a fixing piece and a data acquisition system;

the number of the radiation detectors is multiple, and the radiation detectors are arranged in the same plane and form a detector group together;

the fixing piece integrally fixes the detector group;

each radiation detector is in communication connection with the data acquisition system;

the data acquisition system is adapted to integrate the data from each of the radiation detectors to locate the position of the radiation source.

2. The surface contamination measuring instrument of claim 1, wherein the radiation detector comprises a scintillation crystal, a light guide device, and a photoelectric conversion device;

the light guide device is of a cube structure, the scintillation crystal is attached to the light guide device, and the photoelectric conversion device is fixedly arranged on the surface of the light guide device.

3. The surface contamination measuring instrument according to claim 2, wherein the plurality of radiation detectors are arranged in a number of M x N in the lateral and longitudinal directions.

4. The surface contamination measuring instrument of claim 2, wherein the fixture comprises an upper structural member and a lower structural member;

the upper structure component and the lower structure component are respectively arranged on two opposite sides of the detector group, the two opposite sides of the upper structure component and the two opposite sides of the lower structure component are provided with blocking frames with the same structures, the blocking frames respectively extend to the opposite sides, and the blocking frames are arranged outside the detector group in an enclosing mode.

5. The surface contamination measuring instrument according to claim 4, wherein a plurality of square holes with the same size are formed in the corresponding positions of the upper structural member and the lower structural member, and the top and the bottom of each radiation detector correspond to one square hole respectively.

6. The surface contamination measuring instrument of claim 5, wherein a plurality of ribs are arranged inside the blocking frame of the lower structure, the ribs are arranged at the intervals of the square holes, the ribs are arranged in a criss-cross manner and are in a grid shape, and each grid is matched with the structure of the radiation detector.

7. The surface contamination measuring instrument according to claim 4, wherein two sides of the upper structural member and the lower structural member are provided with extending lugs, and mounting holes are formed in the extending lugs at equal intervals.

8. The surface contamination measuring instrument according to claim 4, wherein a through hole is formed in one side of the light guide device adjacent to the upper structural member, a data line is connected to an output port of each radiation detector, and the other end of the data line passes through the through hole and the square hole to be connected to a corresponding interface of the data acquisition system.

9. The surface contamination measuring instrument of claim 7, wherein the upper structural member and the lower structural member are bolted.