CN218917656U - Radiation-resistant ionization chamber detector under strong radiation environment - Google Patents
Radiation-resistant ionization chamber detector under strong radiation environment Download PDFInfo
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- CN218917656U CN218917656U CN202223500957.1U CN202223500957U CN218917656U CN 218917656 U CN218917656 U CN 218917656U CN 202223500957 U CN202223500957 U CN 202223500957U CN 218917656 U CN218917656 U CN 218917656U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a radiation-resistant ionization chamber detector in a strong radiation environment, which comprises an outer protection cylinder and an inner ionization chamber arranged in the outer protection cylinder, wherein the outer protection cylinder comprises an outer cylinder and a sealing cover detachably arranged at one end of the outer cylinder through a fixing ring, the inner ionization chamber comprises an air chamber inner cylinder coaxially arranged in the outer cylinder, a mounting ring arranged at one end of the air chamber inner cylinder, a ceramic cylinder arranged at the center of the mounting ring and a collector connected to the ceramic cylinder, the center of the sealing cover is provided with a triaxial connector, one end of the triaxial connector positioned in the outer cylinder is connected with the collector through a coaxial cable, and one end of the triaxial connector positioned outside the outer cylinder is connected with a radiation-resistant robot through the triaxial cable. The utility model can improve the anti-interference performance of the original current signal, and the ionization chamber detector only comprises mechanical structural components, does not comprise a signal processing circuit, improves the irradiation dose resistance of the ionization chamber detector, and is convenient to install on an irradiation-resistant robot.
Description
Technical Field
The utility model belongs to the technical field of ionization chamber radiation detection, and particularly relates to a radiation-resistant ionization chamber detector in a strong radiation environment.
Background
In a strong radiation environment such as nuclear reactor accident emergency, the measurement of gamma radiation absorption dose rate is required to be completed, accurate data support is provided for nuclear accident rescue and decision making, ionizing radiation is measured by utilizing an ionization effect, ionizing radiation generates ionization ion pairs in a medium, positive and negative ions drift to a negative electrode and a positive electrode respectively under the action of an electric field to form ionization current, and the ionization current is proportional to the intensity of radiation, so that the intensity of the ionization radiation can be obtained by measuring the ionization current; the common detector, the high-range GM counter tube detector, the scintillator and the semiconductor detector cannot be normally used in the strong radiation environment, the existing ionization chamber detector is a combination of the detector and a signal processing circuit, the signal processing circuit converts a current signal into a pulse signal for output, and the ionization chamber detector has the advantages of short transmission distance of an original signal, convenience in processing and strong interference resistance of an output signal, but because the signal processing circuit comprises electronic elements which are particularly sensitive to high-dose radiation, the irradiation-resistant dose of the electronic elements is generally less than 100Gy/h, so that the irradiation-resistant dose of the ionization chamber detector is reduced; the irradiation-resistant robot can work in a strong radiation environment, and the irradiation-resistant agent of the irradiation-resistant robot is high; accordingly, a radiation resistant ionization chamber detector that is convenient to install in a strong radiation environment on a radiation resistant robot should be provided.
Disclosure of Invention
The utility model aims to solve the technical problems of providing the radiation-resistant ionization chamber detector in a strong radiation environment, which has the advantages of simple structure, reasonable design, small volume and light weight, and is convenient to install on the radiation-resistant robot by utilizing a triaxial connector and a triaxial cable to realize high-voltage power supply and signal transmission between the ionization chamber detector and the radiation-resistant robot, and the ionization chamber detector only comprises mechanical structural components and does not comprise a signal processing circuit.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a radiation-resistant ionization chamber detector under strong radiation environment, includes outer protection section of thick bamboo and sets up the interior ionization chamber in the outer protection section of thick bamboo, its characterized in that: the outer protection cylinder comprises an outer cylinder and a sealing cover detachably mounted at one end of the outer cylinder through a fixing ring, the inner ionization chamber comprises an inner cylinder of an air chamber coaxially mounted inside the outer cylinder, a mounting ring mounted at one end of the inner cylinder of the air chamber, a ceramic cylinder mounted at the center of the mounting ring and a collector connected to the ceramic cylinder, a triaxial connector is arranged at the center of the sealing cover and is located at one end inside the outer cylinder and connected with the collector through a coaxial cable, and one end of the triaxial connector located outside the outer cylinder is connected with the irradiation-resistant robot through the triaxial cable.
The radiation-resistant ionization chamber detector in the strong radiation environment is characterized in that: the air chamber inner cylinder is a polyether-ether-ketone air chamber inner cylinder, and the collector is an aluminum alloy collector.
The radiation-resistant ionization chamber detector in the strong radiation environment is characterized in that: a plurality of connecting columns which are annularly arranged are arranged between the sealing cover and the mounting ring, one ends of the connecting columns are inserted into the inner end face of the sealing cover, and the other ends of the connecting columns are fixedly connected with the mounting ring through first fastening bolts.
The radiation-resistant ionization chamber detector in the strong radiation environment is characterized in that: the air chamber inner cylinder is fixedly connected with the mounting ring through a second fastening bolt.
The radiation-resistant ionization chamber detector in the strong radiation environment is characterized in that: and a limiting ring is arranged on the center thread of the mounting ring.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the mounting ring is arranged at one end of the inner cylinder of the air chamber, the ceramic cylinder is arranged at the center of the mounting ring, the collector is arranged on the ceramic cylinder, an air cavity is arranged between the collector and the inner cylinder of the air chamber, when positive 500V high voltage is conducted on the collector, an electric field is formed in the air cavity, gamma rays in a strong irradiation environment ionize gas in the air cavity, generated electrons and positive ions drift under the action of the electric field, electrons with negative electricity move towards the collector, induced charges are generated by the collector, weak current signals are generated by charge accumulation, the intensity of ionizing radiation can be obtained by measuring the current signals, and the outer protection cylinder and the inner ionization chamber have the advantages of small size and light weight and are convenient to install on the irradiation-resistant robot.
2. According to the utility model, the triaxial connector is arranged in the center of the sealing cover, when in actual use, one end of the triaxial connector, which is positioned in the outer cylinder, is connected with the collector through the coaxial cable, one end of the triaxial connector, which is positioned outside the outer cylinder, is connected with the irradiation-resistant robot through the triaxial cable, and the high-voltage power supply and signal transmission between the ionization chamber detector and the irradiation-resistant robot are realized by utilizing the triaxial connector and the triaxial cable, so that the anti-interference performance of an original current signal can be improved.
3. The utility model only comprises mechanical structural components, does not comprise a signal processing circuit, namely does not comprise any electronic element, but utilizes the signal processing circuit in the irradiation-resistant robot, thereby improving the irradiation-resistant dosage of the ionization chamber detector.
4. The utility model has simple structure and reasonable design, and is convenient for popularization and application.
In summary, the utility model has simple structure and reasonable design, utilizes the triaxial connector and the triaxial cable to realize high-voltage power supply and signal transmission between the ionization chamber detector and the irradiation-resistant robot, can improve the anti-interference performance of original current signals, only comprises mechanical structural components, does not comprise a signal processing circuit, improves the irradiation-resistant dosage of the ionization chamber detector, and has the advantages of small volume and light weight for both the outer protection cylinder and the inner ionization chamber, thereby being convenient to be installed on the irradiation-resistant robot.
The utility model is described in further detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Reference numerals illustrate:
1-an outer cylinder; 2-capping; 3-a fixing ring;
4-an inner cylinder of the air chamber; 5-a mounting ring; 6-a first fastening bolt;
7-a second fastening bolt; 8-connecting columns; 9-a ceramic cylinder;
10-a limiting ring; 11-collector; 12-an air chamber;
13-triaxial connector; 14-coaxial cable; 15-triaxial cable.
Detailed Description
As shown in fig. 1, the utility model comprises an outer protection cylinder and an inner ionization chamber arranged in the outer protection cylinder, wherein the outer protection cylinder comprises an outer cylinder 1 and a sealing cover 2 detachably arranged at one end of the outer cylinder 1 through a fixing ring 3, the inner ionization chamber comprises an inner cylinder 4 coaxially arranged in the outer cylinder 1, a mounting ring 5 arranged at one end of the inner cylinder 4, a ceramic cylinder 9 arranged at the center of the mounting ring 5 and a collector 11 connected to the ceramic cylinder 9, the center of the sealing cover 2 is provided with a triaxial connector 13, one end of the triaxial connector 13 positioned in the outer cylinder 1 is connected with the collector 11 through a coaxial cable 14, and one end of the triaxial connector 13 positioned outside the outer cylinder 1 is connected with an irradiation-resistant robot through a triaxial cable 15.
In this embodiment, the mounting ring 5 is installed at one end of the air chamber inner cylinder 4, the ceramic cylinder 9 is installed at the center of the mounting ring 5, the collector 11 is installed on the ceramic cylinder 9, an air chamber 12 is arranged between the collector 11 and the air chamber inner cylinder 4, when positive 500V high voltage is applied to the collector 11, an electric field is formed in the air chamber 12, gamma rays in a strong irradiation environment ionize gas in the air chamber 12, generated electrons and positive ions drift under the action of the electric field, electrons with negative electricity move towards the collector 11, induced charges are generated by the collector 11, weak current signals are generated by charge accumulation, the intensity of ionizing radiation can be obtained by measuring the current signals, and the outer protection cylinder and the inner ionization chamber have the advantages of small size and light weight and are convenient to install on the irradiation-resistant robot.
In this embodiment, through setting up triaxial connector 13 in the center of closing cap 2, during the in-service use, triaxial connector 13 is located the inside one end of urceolus 1 pass through coaxial cable 14 with collector 11 is connected, triaxial connector 13 is located the outside one end of urceolus 1 passes through triaxial cable 15 and is connected with the irradiation-resistant robot, utilizes triaxial connector 13 and triaxial cable 15 to realize high voltage power supply and signal transmission between this ionization chamber detector and the irradiation-resistant robot, can improve the interference immunity of original current signal.
In this embodiment, the ionization chamber detector only includes a mechanical structural component, and does not include a signal processing circuit, that is, does not include any electronic component, but utilizes a signal processing circuit inside the irradiation-resistant robot, thereby improving the irradiation-resistant dose of the ionization chamber detector.
In this embodiment, the air chamber inner cylinder 4 is a polyetheretherketone air chamber inner cylinder, and the collector 11 is an aluminum alloy collector.
In the embodiment, the inner cylinder of the polyether-ether-ketone air chamber has the characteristics of good radiation resistance and small density, the aluminum alloy collector has the advantage of good radiation resistance, the radiation resistant dosage rate of the radiation resistant ionization chamber detector can reach 500Gy/h, and the accumulated dosage can reach 1.5 multiplied by 104Gy.
In this embodiment, a plurality of connecting columns 8 arranged in a ring shape are disposed between the cover 2 and the mounting ring 5, one ends of the connecting columns 8 are inserted into the inner end surface of the cover 2, and the other ends of the connecting columns 8 are fixedly connected with the mounting ring 5 through first fastening bolts 6.
In this embodiment, the air chamber inner cylinder 4 is fixedly connected with the mounting ring 5 through a second fastening bolt 7.
In this embodiment, the mounting ring 5 is provided with a limiting ring 10 at the center thereof.
In this embodiment, by installing the limiting ring 10 on the central thread of the mounting ring 5, the ceramic cylinder 9 can be prevented from falling off from the mounting ring 5 by using the limiting ring 10, and the collector 11 is installed on the ceramic cylinder 9, so that the reliability of the installation of the collector 11 is improved under the limiting action of the limiting ring 10.
As shown in fig. 1, in actual use, the ionization chamber detector is only required to be installed on the irradiation-resistant robot, so that the ionization chamber detector and the irradiation-resistant robot enter the nuclear reactor accident emergency and other strong radiation environments simultaneously, and gamma radiation absorption dose rate measurement is carried out in the strong radiation environments, so that accurate data support can be provided for nuclear accident rescue and decision-making.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (5)
1. The utility model provides a radiation-resistant ionization chamber detector under strong radiation environment, includes outer protection section of thick bamboo and sets up the interior ionization chamber in the outer protection section of thick bamboo, its characterized in that: the outer protection cylinder comprises an outer cylinder (1) and a sealing cover (2) detachably mounted at one end of the outer cylinder (1) through a fixing ring (3), the inner ionization chamber comprises an inner cylinder (4) coaxially mounted inside the outer cylinder (1), a mounting ring (5) mounted at one end of the inner cylinder (4), a ceramic cylinder (9) mounted at the center of the mounting ring (5) and a collector (11) connected to the ceramic cylinder (9), a triaxial connector (13) is arranged at the center of the sealing cover (2), one end of the triaxial connector (13) located inside the outer cylinder (1) is connected with the collector (11) through a coaxial cable (14), and one end of the triaxial connector (13) located outside the outer cylinder (1) is connected with the irradiation-resistant robot through a triaxial cable (15).
2. A radiation resistant ionization chamber detector in a high radiation environment as recited in claim 1, wherein: the air chamber inner cylinder (4) is a polyether-ether-ketone air chamber inner cylinder, and the collector (11) is an aluminum alloy collector.
3. A radiation resistant ionization chamber detector in a high radiation environment as recited in claim 1, wherein: a plurality of connecting columns (8) which are annularly arranged are arranged between the sealing cover (2) and the mounting ring (5), one ends of the connecting columns (8) are inserted into the inner end face of the sealing cover (2), and the other ends of the connecting columns (8) are fixedly connected with the mounting ring (5) through first fastening bolts (6).
4. A radiation resistant ionization chamber detector in a high radiation environment as recited in claim 3, wherein: the air chamber inner cylinder (4) is fixedly connected with the mounting ring (5) through a second fastening bolt (7).
5. A radiation resistant ionization chamber detector in a high radiation environment as recited in claim 1, wherein: and a limiting ring (10) is arranged on the central thread of the mounting ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223500957.1U CN218917656U (en) | 2022-12-27 | 2022-12-27 | Radiation-resistant ionization chamber detector under strong radiation environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223500957.1U CN218917656U (en) | 2022-12-27 | 2022-12-27 | Radiation-resistant ionization chamber detector under strong radiation environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218917656U true CN218917656U (en) | 2023-04-25 |
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ID=86046153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223500957.1U Active CN218917656U (en) | 2022-12-27 | 2022-12-27 | Radiation-resistant ionization chamber detector under strong radiation environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218917656U (en) |
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2022
- 2022-12-27 CN CN202223500957.1U patent/CN218917656U/en active Active
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