CN218939592U

CN218939592U - Digital ionization chamber detector

Info

Publication number: CN218939592U
Application number: CN202222123605.2U
Authority: CN
Inventors: 曲锐; 赵江斌; 海建中; 刘辉; 靳磊
Original assignee: SHAANXI WEIFENG NUCLEAR INSTRUMENT Inc
Current assignee: SHAANXI WEIFENG NUCLEAR INSTRUMENT Inc
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-04-28
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a digital ionization chamber detector, which comprises an outer high-voltage electrode, a high-voltage electrode and a high-voltage electrode, wherein the outer high-voltage electrode is a hollow barrel body; the top of the outer high-voltage pole is penetrated and provided with a collector, the collector comprises a cylinder body and a center stage which are coaxially connected, the cylinder body is positioned in the outer high-voltage pole, the center stage is penetrated and provided at the top of the outer high-voltage pole, and an insulator is sleeved outside the center stage and at the position intersected with the outer high-voltage pole; the bottom of the outer high-voltage electrode extends to the inside of the cylinder body to form an inner high-voltage electrode, and the inner high-voltage electrode is a hollow cylinder body; the first collector and the second collector are both connected to the electronic circuit device; the electronic circuit device is used for receiving the high-dose ionization signal and the low-dose ionization signal and carrying out data processing on the high-dose ionization signal and the low-dose ionization signal to obtain the ionization radiation value of the environment to be detected. The problem that the detection sensitivity of the existing ionization chamber is low is solved.

Description

Digital ionization chamber detector

Technical Field

The utility model belongs to the technical field of ionization chambers, and particularly relates to a digital ionization chamber detector.

Background

The ionization chamber is a detector for measuring the ionizing radiation by utilizing the ionization effect of the ionizing radiation, the conventional ionization chamber comprises a high-voltage electrode, a collector is arranged in the high-voltage electrode, and gas in the collector can not be used during measurement, so that the partial sensitive volume in the ionization chamber is wasted, and the detection sensitivity of the whole ionization chamber is lower.

Disclosure of Invention

The utility model aims to provide a digital ionization chamber detector, which solves the problem that the existing ionization chamber has partial sensitive volume waste.

The utility model adopts the following technical scheme: a digital ionization chamber detector comprises an external high-voltage electrode which is a hollow barrel body; the top of the outer high-voltage pole is penetrated and provided with a collector, the collector comprises a cylinder body and a center stage which are coaxially connected, the cylinder body is positioned in the outer high-voltage pole, the center stage is penetrated and provided at the top of the outer high-voltage pole, and an insulator is sleeved outside the center stage and at the position intersected with the outer high-voltage pole; the bottom of the outer high-voltage electrode extends to the inside of the cylinder body to form an inner high-voltage electrode, and the inner high-voltage electrode is a hollow cylinder body;

the collector is connected to the electronic circuit device; the collector is used for being matched with the external high-voltage electrode to collect low-dose ionization signals; the collector is also used for being matched with the inner high-voltage electrode to collect high-dose ionization signals; the electronic circuit device is used for receiving the high-dose ionization signal and the low-dose ionization signal and carrying out data processing on the high-dose ionization signal and the low-dose ionization signal to obtain the ionization radiation value of the environment to be detected.

Further, two insulating parts are coaxially sleeved outside the central stage and between the cylinder body and the outer high-voltage electrode, and a protection ring is coaxially arranged between the two insulating parts.

Further, the electronic circuit device comprises a housing, wherein the PCB assembly is arranged in the housing, and a socket is arranged at the top of the housing.

The beneficial effects of the utility model are as follows: the ionization chamber is provided with the inner high-voltage electrode in the collector, and the effective ionization volume in the ionization chamber is increased under the same volume, so that the lower measurement limit is lower, and the detection sensitivity of the whole ionization chamber is improved.

Drawings

Fig. 1 is a schematic diagram of a digital ionization chamber detector according to the present utility model.

Wherein, 1, an outer high-voltage pole, 2, a collector, 21, a cylinder, 22, a central stage, 3, an inner high-voltage pole, insulator 4, insulator 5,

protection ring

6, 7, PCB assembly 8, socket 9, casing.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1, the present utility model provides a digital ionization chamber detector, which comprises an external high-voltage electrode 1, which is a hollow barrel body; the top of the outer high-voltage pole 1 is penetrated and provided with a collector 2, the collector 2 comprises a cylinder 21 and a center stage 22 which are coaxially connected, the cylinder 21 is positioned in the outer high-voltage pole 1, the center stage 22 is penetrated and provided at the top of the outer high-voltage pole 1, and an insulator 4 is sleeved outside the center stage 22 and at the position intersected with the outer high-voltage pole 1; the bottom of the outer high-voltage pole 1 extends to the inside of the cylinder 21 to form an inner high-voltage pole 3, and the inner high-voltage pole 3 is a hollow cylinder.

The collector 2 is connected to electronic circuit means; the collector 2 is used for being matched with the outer high-voltage electrode 1 to collect low-dose ionization signals; the high-dose ionization signal is collected by being matched with the inner high-voltage electrode 3; the electronic circuit device is used for receiving the high-dose ionization signal and the low-dose ionization signal and carrying out data processing on the high-dose ionization signal and the low-dose ionization signal to obtain an ionization radiation value of the environment to be detected.

A collector 2 for collecting low dose ionization signals in cooperation with the outer high voltage electrode 1; and also for cooperating with the inner high voltage electrode 3 to collect high dose ionization signals. The inner high-voltage electrode 3 is additionally arranged in the cylinder 21 of the collector 2, so that the gas between the outer high-voltage electrode 1 and the central electrode 2 can be detected, the gas detection between the inner high-voltage electrode 3 and the collector 2 is increased, and the gas sensitive volume is increased.

In some embodiments, two insulators 5 are coaxially sleeved outside the central stage 22 and between the cylinder 21 and the outer high-voltage pole 1, and a protection ring 6 is coaxially arranged between the two insulators 5. The protection ring 6 is used for guiding out weak current, and the two sides of the protection ring are provided with the insulating pieces 5 to isolate the high-voltage pole from the collector 2 and support the high-voltage pole 1 and the cylinder 21, so that the stability of the whole structure can be enhanced and the vibration of the use environment can be coped with.

In some embodiments, the electronic circuit device comprises a housing 9 having a PCB assembly 7 disposed therein, the housing 9 having a socket 8 disposed on top thereof. The electronic circuit device is used for receiving the high-dose ionization signal and the low-dose ionization signal and carrying out data processing on the high-dose ionization signal and the low-dose ionization signal to obtain an ionization radiation value of the environment to be detected.

The utility model relates to a measuring method of a digital ionization chamber detector, which comprises the following steps: an inner high-voltage electrode 3 is additionally arranged in the collector 2, low-dose ionization signals are collected through the cooperation of the outer high-voltage electrode 1 and the collector 2, and high-dose ionization signals are collected through the cooperation of the inner high-voltage electrode 3 and the collector 2. Then the ionization signal is output to the electronic circuit device through the collector 2, and the ionization signal is subjected to data processing to obtain the ionization radiation value of the environment to be detected. According to the digital ionization chamber detector, the inner high-voltage electrode is additionally arranged in the collector, so that the gas detection between the inner high-voltage electrode and the collector is increased, and the gas sensitivity volume is improved.

Claims

1. A digital ionization chamber detector, which is characterized by comprising an outer high-voltage pole (1) which is a hollow barrel body; the top of the outer high-voltage pole (1) is penetrated and provided with a collector (2), the collector (2) comprises a cylinder (21) and a center stage (22) which are coaxially connected, the cylinder (21) is positioned in the outer high-voltage pole (1), the center stage (22) is penetrated and arranged at the top of the outer high-voltage pole (1), and an insulator (4) is sleeved outside the center stage (22) and at the position intersecting the outer high-voltage pole (1); the bottom of the outer high-voltage electrode (1) extends to the inside of the cylinder (21) to form an inner high-voltage electrode (3), and the inner high-voltage electrode (3) is a hollow cylinder;

the collector (2) is connected to electronic circuit means; the collector (2) is used for being matched with the outer high-voltage electrode (1) to collect low-dose ionization signals; the collector (2) is also used for being matched with the inner high-voltage electrode (3) to collect high-dose ionization signals; the electronic circuit device is used for receiving the high-dose ionization signal and the low-dose ionization signal and carrying out data processing on the high-dose ionization signal and the low-dose ionization signal to obtain an ionization radiation value of the environment to be detected.

2. A digital ionization chamber detector according to claim 1, characterized in that two insulators (5) are coaxially sleeved outside the central stage (22) and between the cylinder (21) and the outer high voltage electrode (1), and a protection ring (6) is coaxially arranged between the two insulators (5).

3. A digital ionization chamber detector according to claim 1 or 2, characterized in that the electronic circuit arrangement comprises a housing (9) with a PCB assembly (7) arranged inside, the housing (9) being provided with a socket (8) at the top.