CN113219511A - Detection method and detector for accurately searching surface radiation pollution position - Google Patents
Detection method and detector for accurately searching surface radiation pollution position Download PDFInfo
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- CN113219511A CN113219511A CN202110615866.3A CN202110615866A CN113219511A CN 113219511 A CN113219511 A CN 113219511A CN 202110615866 A CN202110615866 A CN 202110615866A CN 113219511 A CN113219511 A CN 113219511A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/169—Exploration, location of contaminated surface areas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/185—Measuring radiation intensity with ionisation chamber arrangements
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Abstract
The invention relates to a detection method and a detector for accurately searching a surface radiation pollution position, belonging to the field of nuclear radiation detection; a detection method and a device capable of accurately searching the position of a surface radiation pollution source are provided, and the technical scheme is as follows: a detection method for accurately searching a surface radiation pollution position is characterized in that a plurality of groups of anode wires are connected with the positive electrode of the same power supply, the same metal shell opposite to the plurality of groups of anode wires is connected with the negative electrode of the same power supply, an electric field is formed between the metal shell and the plurality of groups of anode wires, and inert gas is filled between the plurality of groups of anode wires and the metal shell; processing and analyzing the read detection data of different groups of anode wires; a detector for accurately locating a radiation contamination of a surface, comprising: the detector comprises a detector shell, an anode wire assembly, an incidence window and an insulating column; the detector shell is an upper end opening, a plurality of anode wire assemblies are arranged in the detector shell, the anode wire assemblies and the detector shell are fixed through insulating columns, and an entrance window covers the upper end opening of the detector shell.
Description
Technical Field
The invention discloses a detection method and a detector for accurately searching a surface radiation pollution position, and belongs to the field of nuclear radiation detection.
Background
At present, the technology of surface radiation pollution monitoring is mature. The surface pollution monitoring equipment is mainly applied to the fields of nuclear power, nuclear fuel circulation, spent fuel post-treatment, nuclear facility decommissioning and the like. After the staff carries out surface radiation pollution monitoring, in time discover to stain the position through the analytic data to carry out decontamination according to the instruction and handle, reduced personnel and stained the risk, prevented that the pollution from shifting. It is one of means for ensuring safe production of nuclear power stations or related nuclear facilities and other radioactive isotope application departments.
The current detectors mainly include: a proportional counter, a scintillation detector and a semiconductor detector; although various detectors have different working principles and have deviation in detection sensitivity, the radioactive contamination intensity can be integrally monitored, and a guidance scheme is provided for next measures.
However, the current detector can only monitor the detection surface for radioactive contamination, namely: radioactivity is monitored only over the detector detection area and cannot be relatively accurately indicated for the location of contamination and for the intensity of radioactivity between different locations within the area. The positioning measurement is carried out by adopting a splicing mode, and the problems of large volume, different consistency, high manufacturing cost and the like exist.
The defect is not beneficial to workers to quickly clean the radioactive substances, and on the other hand, the defect is not beneficial to researching the leakage path and trace of the radioactive substances in the later period.
Disclosure of Invention
In order to solve the technical problem, the invention provides a detection method and a detection device capable of accurately searching the position of a surface radiation pollution source.
In order to achieve the technical purpose, the technical scheme provided by the invention is as follows:
a detection method for accurately searching a surface radiation pollution position is characterized in that a plurality of groups of anode wires are connected with the positive electrode of the same power supply, the same metal shell opposite to the plurality of groups of anode wires is connected with the negative electrode of the same power supply, an electric field is formed between the metal shell and the plurality of groups of anode wires, and inert gas is filled between the plurality of groups of anode wires and the metal shell;
and processing and analyzing the read detection data of different groups of anode wires.
And reading different groups of anode wires to detect the radiation intensity of alpha rays or beta rays at corresponding positions.
And reading the anode wire data of all the groups, wherein the anode wire data of any group is higher than the anode wire data of the adjacent position, and the position corresponding to the group of anode wires can be judged to have the radioactive source.
The detector for accurately searching the surface radiation pollution position corresponding to the method comprises the following steps: the detector comprises a detector shell, an anode wire assembly, an incidence window and an insulating column; the detector shell is upper end open-ended square shell, be provided with a plurality of positive pole silk subassemblies in the detector shell, a plurality of positive pole silk subassemblies are arranged in proper order on same horizontal plane, and fix mutually through the insulated column between positive pole silk subassembly and the detector shell, and it is insulating between the positive pole silk subassembly, detector shell upper end opening covers there is the entrance window.
The anode wire assembly comprises anode wires which are bent for multiple times on the same horizontal plane, and the anode wires are not overlapped.
The insulation column comprises a fixed insulation column and a shielding insulation column, the fixed insulation column is a cylinder made of an insulation material, the fixed insulation column is fixed at the bottom of the shell of the detector shell, and the upper part of the fixed insulation column is fixed with an anode wire of the anode wire assembly;
the shield insulating column includes: the anode wire comprises an anode wire through hole, a shielding shell and an insulating shell, wherein the insulating shell is integrally of a columnar structure, a through hole is formed in the insulating shell along the axis direction of the insulating shell, the through hole is the anode wire through hole, the shielding shell is arranged in the pipe wall of the insulating shell, and the shielding shell is a metal net or a metal pipe.
The lower end of the shielding insulating column is coaxially fixed with a cylindrical clamping table which is of a tubular structure, and the outer diameter of the cylindrical clamping table is larger than that of the shielding insulating column.
The upper end of the shielding shell is completely wrapped by the shielding insulating column, the lower end of the shielding shell extends to the outside of the cylindrical clamping table from the lower end of the shielding insulating column, and the shielding shell is grounded.
And the anode wire in the anode wire assembly extends out of the cylindrical clamping table pipe from the anode wire through hole and is electrically connected with the processing module.
The processing module comprises: the system comprises a main control chip, a partition chip and a processing circuit; the signal end of each anode wire assembly is electrically connected with one processing circuit, the processing circuits of the adjacent anode wire assemblies are electrically connected with one partition chip, and the main control chip is connected with the partition chips in series.
The processing circuit includes: the signal end of the anode wire component is connected with the input end of the corresponding signal amplification circuit, the output end of the signal amplification circuit is connected with the ADC conversion circuit, and the output end of the ADC conversion circuit is connected with the partition chip corresponding to the ADC conversion circuit.
The detector of accurate surface radiation pollution position of looking for still includes the power, the power includes: high voltage power supply and working power supply, high voltage power supply does: the input end of the transformer is connected with AC220V, the output end of the transformer is connected with a rectifier, the rectifier is connected with a high-voltage stabilizer, the anode of the output end of the high-voltage stabilizer is connected with a resistor R in series and then connected with a plurality of anode wire assemblies, and the cathode of the high-voltage stabilizer is connected with a detector shell;
the working power supply is as follows: the power supply module is connected with an AC220V power supply, the power supply module outputs a DC5V power supply, the output end of the power supply module is connected with a voltage stabilizing circuit, the voltage stabilizing circuit outputs a DC3.3V power supply, and the working power supply supplies power for the working of the processing module.
The signal amplifying circuit comprises an operational amplifier QA, the anode wire 32 is connected with one end of a resistor RB17, the other end of the resistor RB17 is connected with one end of a resistor RB13 and the inverting input end of the operational amplifier QA in parallel, the positive phase input end of the operational amplifier QA is connected with the resistor RB25 in series and then is grounded, the other end of the resistor RB13 is connected with the output end of the operational amplifier QA, the positive power supply of the operational amplifier QA is connected with a power supply end of VDD, the negative power supply of the operational amplifier QA is connected with a power supply end of VDD, the connection point of the output end of the operational amplifier QA and the resistor RB13 is also connected with one end of a resistor RB18, one end of the resistor RB18 is connected with the non-inverting input end of the operational amplifier QB, the inverting input end of the operational amplifier QB is connected with the resistor RB23 and the resistor RB24 in parallel, the other end of the resistor RB23 is grounded, the other end of the resistor RB24 is connected with the output end of the operational amplifier QB and one end of the capacitor CB9, and the capacitor CB9 is connected with the resistor RB21 and then is grounded.
A filter circuit is arranged between the anode wire 32 and the resistor RB17, and the filter circuit is as follows: one end of a capacitor CB8 is connected with the anode wire 32, the other end of the capacitor CB8 is connected with the cathode of a transient suppression diode DB1, and the anode of the transient suppression diode VTS is grounded.
The ADC conversion circuit comprises an alpha comparison circuit and a beta comparison circuit, wherein the alpha comparison circuit is as follows:
one end of a resistor R30 is connected with a connecting point of a QA output end of the operational amplifier and a resistor RB13, the other end of the resistor R30 is connected with a positive input end of a voltage comparator U5 and one end of a resistor R39, the other end of the resistor R39 is grounded, a negative input end of the voltage comparator U5 is connected with one end of a resistor R36, the other end of the resistor R36 is connected with a capacitor C21, a resistor R41 and a resistor R38 in parallel, the other end of the capacitor C21 and the other end of the resistor R41 are grounded, the other end of the resistor R38 is connected with a singlechip, an output end of the voltage comparator U5 is connected with a resistor R32, the resistor R32 is connected with a positive power end of the voltage comparator U5 and a DC5V power supply, a negative power end of the voltage comparator U5 is grounded, a connecting point of the output end of the voltage comparator U5 and a connecting point of the resistor R32 is an alpha comparison circuit output end, and the alpha comparison circuit is connected with the singlechip;
the beta comparison circuit is as follows: one end of a resistor R14 is connected with a connection point of a capacitor CB9 and a resistor RB21, the other end of the resistor R14 is connected with a positive input end of a voltage comparator U4 and a resistor R22, the other end of the resistor R22 is grounded, the negative input end of the voltage comparator U4 is connected with the resistor R16, the other end of the resistor R16 is connected with the capacitor C17 and a single chip microcomputer, the other end of the capacitor C17 is grounded, the output end of the voltage comparator U4 is connected with a resistor R13, the resistor R13 is connected with the positive power supply end of the voltage comparator U4 and a DC5V power supply, the negative power supply end of the voltage comparator U4 is grounded, the connection point of the output end of the voltage comparator U4 and the connection point of the resistor R13 is the output end of a beta comparison circuit, and the output end of the beta comparison circuit is connected with the single chip microcomputer.
The main control chip and the partition chip are both single-chip microcomputers, and the single-chip microcomputers adopt STM373CCT 6.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the method adopted by the invention adopts a compound eye-like structure for detection, the detection precision is high, the error of the equipment is greatly reduced, and the detection sensitivity can be improved and the pollution position can be accurately searched.
The invention adopts a plurality of anode wire assemblies, each anode wire assembly can participate in the detection of alpha rays or beta rays, so that the overall detection accuracy is improved, meanwhile, the anode wire assemblies are connected with the same power supply and are positioned in the same gas environment, the influence of external factors is small in the detection process, and the detection data are uniform and accurate.
Thirdly, the invention adopts a plurality of groups of anode wire assemblies, when the radioactive source is detected, a plurality of groups of anode wire assemblies output signals simultaneously, and the signals of one group of anode wire assemblies are strong, and the signals of the surrounding anode wire assemblies gradually decrease, so that the position of the radioactive source can be judged quickly and accurately.
The shielding insulating column is adopted, so that different anode wires are prevented from passing through other anode wire assemblies, the situations of short circuit between the anode wire assemblies and electric field interference of the anode wires on the other anode wire assemblies are prevented, the data processing in the later period is facilitated, and the detection accuracy is improved; in addition, the shielding shell can shield the electric field interference of the vertically arranged anode wire in the anode wire assembly, and the detection accuracy is ensured.
The invention adopts the partition chip, so that a plurality of anode wire assemblies can be electrically connected with the processing chip conveniently, and the data can be rapidly and accurately processed conveniently; on the other hand, the data provided by the anode wire assembly is processed by the partition chip, the main control chip continues to provide processing data for different anode wire assemblies for comprehensive processing, the processing speed can be increased, and the potential is provided for improving the precision of the detector for accurately searching the surface radiation pollution position.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a cross-sectional view of a shield insulating pillar according to the present invention.
FIG. 4 is a schematic cross-sectional view A-A of FIG. 3 according to the present invention.
FIG. 5 is a circuit diagram of the high voltage power supply in connection with the detector housing and anode wire assembly of the present invention.
FIG. 6 is a signal amplification circuit diagram according to the present invention.
FIG. 7 is a diagram of an alpha comparator circuit according to the present invention.
FIG. 8 is a beta comparator circuit diagram according to the present invention.
In the figure: 1 is the detector shell, 2 is the anode wire subassembly, 3 is the incident window, 4 is the insulated column, 41 is fixed insulated column, 42 is shielding insulated column, 421 is the anode wire through-hole, 422 is shielding shell, 423 is insulating shell, 424 is the cylinder ka tai.
Detailed Description
For a further understanding of the invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples:
a detection method for accurately searching a surface radiation pollution position is characterized in that a plurality of groups of anode wires are connected with the positive electrode of the same power supply, the same metal shell opposite to the plurality of groups of anode wires is connected with the negative electrode of the same power supply, an electric field is formed between the metal shell and the plurality of groups of anode wires, and inert gas is filled between the plurality of groups of anode wires and the metal shell;
and processing and analyzing the read detection data of different groups of anode wires.
And reading different groups of anode wires to detect the radiation intensity of alpha rays or beta rays at corresponding positions.
And reading the anode wire data of all the groups, wherein the anode wire data of any group is higher than the anode wire data of the adjacent position, and the position corresponding to the group of anode wires can be judged to have the radioactive source.
The alpha particles or the beta particles are incident into the space between the plurality of groups of anode wires and the metal shell and then collide with atoms of the inert gas, so that the inert gas is ionized; under the action of an electric field, electrons move towards the anode wire to form electron avalanche, and the electrons are contacted with the anode wire to generate pulses; in the regions with the same space size at different positions, alpha particles or beta particles diffuse outwards from the initial position, the density of the alpha particles or the beta particles is reduced, and further the pulse amplitude of the anode wire at the position of the radiation source is large, and the pulse amplitude of the anode wire around the position of the anode wire as the center is gradually reduced, so that the detection method for accurately searching the surface radiation pollution position is formed according to the principle.
As shown in fig. 1 to 8: the detector for accurately searching the surface radiation pollution position corresponding to the method comprises the following steps: the detector comprises a detector shell 1, an anode wire assembly 2, an entrance window 3 and an insulating column 4; detector shell 1 is upper end open-ended square shell, be provided with a plurality of positive pole silk subassemblies 2 in the detector shell 1, a plurality of positive pole silk subassemblies 2 are arranged in proper order on same horizontal plane, and fix mutually through insulated column 4 between positive pole silk subassembly 2 and the detector shell 1, and it is insulating between the positive pole silk subassembly 2, 1 upper end opening covers of detector shell has entrance window 3.
The anode wire assembly 2 comprises anode wires which are bent for multiple times on the same horizontal plane, and the anode wires are not overlapped.
The insulating column 4 comprises a fixed insulating column 41 and a shielding insulating column 42, the fixed insulating column 41 is a cylinder made of insulating materials, the fixed insulating column 41 is fixed at the bottom of the shell of the detector shell 1, and the upper part of the fixed insulating column 41 is fixed with an anode wire of the anode wire assembly 2;
the shield insulating column 42 includes: anode wire through-hole 421, shielding shell 422 and insulating shell 423, insulating shell 423 is whole to be the columnar structure, and insulating shell 423 is gone up and is provided with the through-hole along its axis direction, the through-hole is anode wire through-hole 421, be provided with shielding shell 422 in insulating shell 423's the pipe wall, shielding shell 422 is metal mesh or tubular metal resonator.
The lower end of the shielding insulating column 42 is coaxially fixed with a cylindrical clamping table 424, the cylindrical clamping table 424 is of a tubular structure, and the outer diameter of the cylindrical clamping table 424 is larger than that of the shielding insulating column 42.
The upper end of the shielding shell 422 is completely wrapped by the shielding insulation column 42, the lower end of the shielding shell 422 extends from the lower end of the shielding insulation column 42 to the outside of the cylindrical clamping table 424, and the shielding shell 422 is grounded.
The anode wire in the anode wire assembly 2 extends out of the cylindrical clamping table 424 from the anode wire through hole 421 and is electrically connected with the processing module.
The processing module comprises: the system comprises a main control chip, a partition chip and a processing circuit; the signal end of each anode wire assembly is electrically connected with one processing circuit, the processing circuits of the adjacent anode wire assemblies are electrically connected with one partition chip, and the main control chip is connected with the partition chips in series.
The processing circuit includes: the signal end of the anode wire component is connected with the input end of the corresponding signal amplification circuit, the output end of the signal amplification circuit is connected with the ADC conversion circuit, and the output end of the ADC conversion circuit is connected with the partition chip corresponding to the ADC conversion circuit.
The detector of accurate surface radiation pollution position of looking for still includes the power, the power includes: high voltage power supply and working power supply, high voltage power supply does: the input end of the transformer is connected with AC220V, the output end of the transformer is connected with a rectifier, the rectifier is connected with a high-voltage stabilizer, the anode of the output end of the high-voltage stabilizer is connected with a resistor R in series and then connected with a plurality of anode wire assemblies, and the cathode of the high-voltage stabilizer is connected with a detector shell;
the working power supply is as follows: the power supply module is connected with an AC220V power supply, the power supply module outputs a DC5V power supply, the output end of the power supply module is connected with a voltage stabilizing circuit, the voltage stabilizing circuit outputs a DC3.3V power supply, and the working power supply supplies power for the working of the processing module.
The signal amplifying circuit comprises an operational amplifier QA, the anode wire 32 is connected with one end of a resistor RB17, the other end of the resistor RB17 is connected with one end of a resistor RB13 and the inverting input end of the operational amplifier QA in parallel, the positive phase input end of the operational amplifier QA is connected with the resistor RB25 in series and then is grounded, the other end of the resistor RB13 is connected with the output end of the operational amplifier QA, the positive power supply of the operational amplifier QA is connected with a power supply end of VDD, the negative power supply of the operational amplifier QA is connected with a power supply end of VDD, the connection point of the output end of the operational amplifier QA and the resistor RB13 is also connected with one end of a resistor RB18, one end of the resistor RB18 is connected with the non-inverting input end of the operational amplifier QB, the inverting input end of the operational amplifier QB is connected with the resistor RB23 and the resistor RB24 in parallel, the other end of the resistor RB23 is grounded, the other end of the resistor RB24 is connected with the output end of the operational amplifier QB and one end of the capacitor CB9, and the capacitor CB9 is connected with the resistor RB21 and then is grounded.
A filter circuit is arranged between the anode wire 32 and the resistor RB17, and the filter circuit is as follows: one end of a capacitor CB8 is connected with the anode wire 32, the other end of the capacitor CB8 is connected with the cathode of a transient suppression diode DB1, and the anode of the transient suppression diode VTS is grounded.
The ADC conversion circuit comprises an alpha comparison circuit and a beta comparison circuit, wherein the alpha comparison circuit is as follows:
one end of a resistor R30 is connected with a connecting point of a QA output end of the operational amplifier and a resistor RB13, the other end of the resistor R30 is connected with a positive input end of a voltage comparator U5 and one end of a resistor R39, the other end of the resistor R39 is grounded, a negative input end of the voltage comparator U5 is connected with one end of a resistor R36, the other end of the resistor R36 is connected with a capacitor C21, a resistor R41 and a resistor R38 in parallel, the other end of the capacitor C21 and the other end of the resistor R41 are grounded, the other end of the resistor R38 is connected with a singlechip, an output end of the voltage comparator U5 is connected with a resistor R32, the resistor R32 is connected with a positive power end of the voltage comparator U5 and a DC5V power supply, a negative power end of the voltage comparator U5 is grounded, a connecting point of the output end of the voltage comparator U5 and a connecting point of the resistor R32 is an alpha comparison circuit output end, and the alpha comparison circuit is connected with the singlechip;
the beta comparison circuit is as follows: one end of a resistor R14 is connected with a connection point of a capacitor CB9 and a resistor RB21, the other end of the resistor R14 is connected with a positive input end of a voltage comparator U4 and a resistor R22, the other end of the resistor R22 is grounded, the negative input end of the voltage comparator U4 is connected with the resistor R16, the other end of the resistor R16 is connected with the capacitor C17 and a single chip microcomputer, the other end of the capacitor C17 is grounded, the output end of the voltage comparator U4 is connected with a resistor R13, the resistor R13 is connected with the positive power supply end of the voltage comparator U4 and a DC5V power supply, the negative power supply end of the voltage comparator U4 is grounded, the connection point of the output end of the voltage comparator U4 and the connection point of the resistor R13 is the output end of a beta comparison circuit, and the output end of the beta comparison circuit is connected with the single chip microcomputer.
The main control chip and the partition chip are both single-chip microcomputers, and the single-chip microcomputers adopt STM373CCT 6.
The anode wire is a 25-micron gold-plated tungsten wire.
The detector shell 1 is made of brass.
The entrance window 3 is a 10 μm titanium foil.
The entrance window 3 seals an opening at the upper end of the detector shell 1, and inert gas is filled in the detector shell 1.
Be provided with the through-hole that is used for installing shielding insulating column 42 on the detector shell 1 shell bottom, just cylinder ka tai 424 is located the detector shell 1 outside, it is sealed through glue between detector shell 1 and the shielding insulating column 42.
The specific implementation mode of the invention is as follows:
when the invention is used for detecting radioactive substances, because of the radioactive characteristics, the anode wire assemblies 2 all receive signals because ions are generated by the ionization of radioactive rays, and the anode wire assemblies 2 which are closer to the radioactive substances receive stronger signals, so that the attachment positions of the radioactive substances can be judged through the data processing of the single chip microcomputer, and then the radioactive substances are quickly and accurately processed. In addition, by judging the precise position where the radioactive substance is attached, scientific researchers can conveniently reversely deduce the reason of the radiation pollution and provide measures for avoiding the problems.
The above embodiments are merely illustrative of the principles of the present invention and its effects, and do not limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.
Claims (9)
1. A detection method for accurately searching a surface radiation pollution position is characterized by comprising the following steps: the multiple groups of anode wires are connected with the anode of the same power supply, the same metal shell opposite to the multiple groups of anode wires is connected with the cathode of the same power supply, an electric field is formed between the metal shell and the multiple groups of anode wires, and inert gas is filled between the multiple groups of anode wires and the metal shell;
and processing and analyzing the read detection data of different groups of anode wires.
2. The detection method for accurately finding the position of the radiation pollution on the surface according to claim 1, characterized in that: and reading different groups of anode wires to detect the radiation intensity of alpha rays or beta rays at corresponding positions.
3. The detection method for accurately finding the position of the radiation pollution on the surface according to claim 2, characterized in that: and reading the anode wire data of all the groups, wherein the anode wire data of any group is higher than the anode wire data of the adjacent position, and the position corresponding to the group of anode wires can be judged to have the radioactive source.
4. A detector for accurately finding the position of radiation contamination on a surface according to the method of any one of claims 1 to 3, comprising: the detector comprises a detector shell (1), an anode wire assembly (2), an entrance window (3) and an insulating column (4); detector shell (1) is upper end open-ended square shell, be provided with a plurality of positive pole silk subassemblies (2) in detector shell (1), a plurality of positive pole silk subassemblies (2) are arranged in proper order on same horizontal plane, and fix mutually through insulated column (4) between positive pole silk subassembly (2) and detector shell (1), and it is insulating between positive pole silk subassembly (2), detector shell (1) upper end opening cover has entrance window (3).
5. The detector of claim 4, wherein the detector is capable of accurately finding the position of the surface radiation pollution: the anode wire assembly (2) comprises anode wires which are bent for multiple times on the same horizontal plane, and the anode wires are not overlapped.
6. The detector of claim 5, wherein the detector is capable of accurately locating the radiation contamination on the surface: the insulation column (4) comprises a fixed insulation column (41) and a shielding insulation column (42), the fixed insulation column (41) is a cylinder made of an insulation material, the fixed insulation column (41) is fixed at the bottom of the detector shell (1), and the upper part of the fixed insulation column (41) is fixed with an anode wire of the anode wire assembly (2);
the shield insulating post (42) includes: positive pole silk through-hole (421), shielding shell (422) and insulating casing (423), insulating casing (423) wholly is the columnar structure, and insulating casing (423) are gone up and are provided with the through-hole along its axis direction, the through-hole is positive pole silk through-hole (421), be provided with shielding shell (422) in the pipe wall of insulating casing (423), shielding shell (422) are metal mesh or tubular metal resonator.
7. The detector of claim 6, wherein the detector is capable of accurately locating the radiation contamination on the surface: the coaxial cylinder card platform (424) that is fixed with of shielding insulated column (42) lower extreme, cylinder card platform (424) are the tubular structure, cylinder card platform (424) external diameter is greater than shielding insulated column (42) external diameter.
8. The detector of claim 7, wherein the detector is capable of accurately locating the radiation contamination on the surface: the upper end of the shielding shell (422) is completely wrapped by the shielding insulation column (42), the lower end of the shielding shell (422) extends from the lower end of the shielding insulation column (42) to the outside of the cylindrical clamping table (424), and the shielding shell (422) is grounded.
9. The detector of claim 8, wherein the detector is adapted to accurately locate a radiation contamination on a surface: and the anode wire in the anode wire component (2) extends out of the cylindrical clamping table (424) from the anode wire through hole (421) and is electrically connected with the processing module.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615866.3A CN113219511A (en) | 2021-06-02 | 2021-06-02 | Detection method and detector for accurately searching surface radiation pollution position |
| NL2032041A NL2032041B1 (en) | 2021-06-02 | 2022-06-01 | Detection method and detector for accurately searching surface radiation pollution position |
| ZA2022/06151A ZA202206151B (en) | 2021-06-02 | 2022-06-02 | Detection method and detector for accurately searching surface radiation pollution position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110615866.3A CN113219511A (en) | 2021-06-02 | 2021-06-02 | Detection method and detector for accurately searching surface radiation pollution position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113219511A true CN113219511A (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110615866.3A Pending CN113219511A (en) | 2021-06-02 | 2021-06-02 | Detection method and detector for accurately searching surface radiation pollution position |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113219511A (en) |
| NL (1) | NL2032041B1 (en) |
| ZA (1) | ZA202206151B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5951376A (en) * | 1982-09-18 | 1984-03-24 | Fuji Electric Co Ltd | Gas ionization type radiation measuring apparatus |
| WO2019208477A1 (en) * | 2018-04-26 | 2019-10-31 | 三菱マテリアル株式会社 | α-RAY MEASURING DEVICE |
-
2021
- 2021-06-02 CN CN202110615866.3A patent/CN113219511A/en active Pending
-
2022
- 2022-06-01 NL NL2032041A patent/NL2032041B1/en active
- 2022-06-02 ZA ZA2022/06151A patent/ZA202206151B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL2032041A (en) | 2022-12-08 |
| ZA202206151B (en) | 2022-09-28 |
| NL2032041B1 (en) | 2023-12-20 |
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