CN220367423U

CN220367423U - Ionization chamber structure for measuring activity

Info

Publication number: CN220367423U
Application number: CN202321370866.2U
Authority: CN
Inventors: 杜建光
Original assignee: Tianjin Zhonghe Yongtai Technology Co ltd
Current assignee: Tianjin Zhonghe Yongtai Technology Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2024-01-19
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses an ionization chamber structure for measuring activity, which comprises a shell and an inner shell, wherein the shell comprises a top cover and a base, a fixing groove for installation is formed in the bottom in the top cover, sliding grooves are formed in the top cover at two sides of the fixing groove, limiting blocks are connected in a sliding mode in the sliding grooves, and a source applying device is clamped and fixed between the limiting blocks. The ionization chamber structure for measuring the activity has the advantages of simple and compact structure, more flexible and stable use and high practical value, and is suitable for being widely popularized and used.

Description

Ionization chamber structure for measuring activity

Technical Field

The utility model relates to the technical field of ionization chambers, in particular to an ionization chamber structure for measuring activity.

Background

The ionization chamber is a device capable of converting the received radioactive isotope rays into electric signals through electrodes to be output, and the working principle is that the rays react with internal gas to generate electron-positive ion pairs when the rays are irradiated, and the electron-positive ion pairs move towards two poles in an electric field to form ionization current, and the ionization current is usually used for detecting a gas detector of the ionization radiation.

Publication No.: CN207817220U discloses an ionization chamber comprising a collector, a high voltage electrode, a guard ring, an insulator; the high-voltage pole and the protection ring are both of cylindrical structures, and the high-voltage pole is sleeved in the protection ring, and is characterized in that: an insulator is arranged between the high-voltage pole and the protection ring; on an end face of the protection ring, a first BNC connector and a second BNC connector are installed, and one end of the first BNC connector is connected with one end of the collector.

Currently, existing ionization chambers have the following disadvantages when in use: in the use, because the power supply device is different in size, the corresponding sleeve is required to be matched for use, so that the use flexibility is poor. To this end, we propose an ionization chamber structure that measures activity.

Disclosure of Invention

The utility model mainly aims to provide an ionization chamber structure for measuring activity, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a measure ionization chamber structure of activity, includes casing and inner shell, the casing includes top cap and base, the fixed slot that is used for the installation has been seted up to the bottom in the top cap, the sliding tray has all been seted up to the both sides that are located the fixed slot in the top cap, sliding connection has the stopper in the sliding tray, the centre gripping is fixed with the applicator between the stopper.

Further, the bottom of top cap and the top of base all are provided with the connecting seat, and the casing passes through threaded connection connecting seat, and top cap and base all pass through welded connection connecting seat.

Further, a pressure spring is arranged on one side, located at the limiting block, of the sliding groove, and the sliding groove is provided with the pressure spring through a spring seat.

Further, be provided with the inner shell in the casing, and the applicator is located the inner shell, the periphery of inner shell is provided with the collector, and the inner shell passes through screw connection collector.

Further, the top and the bottom of the inner shell are provided with protection poles.

Compared with the prior art, the utility model has the following beneficial effects:

1. through top cap, fixed slot, sliding tray and the sliding block that set up, can carry out spacing fixed processing with it according to the applicator size that uses to improve the flexibility that ionization chamber used, be difficult for producing the skew more, practical value is high, can also improve the accuracy of radioactivity measurement.

2. Through top cap, base and the connecting seat that set up, can carry out quick detach fast-assembling with the ionization chamber to change the structure that damages after long-term use with inside, reduce the wasting of resources, thereby reach reduce cost's effect.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an ionization chamber structure for measuring activity according to the present utility model.

FIG. 2 is a schematic cross-sectional view of an ionization chamber structure for measuring activity according to the present utility model.

FIG. 3 is a schematic cross-sectional view of a top cover of an ionization chamber structure for measuring activity according to the present utility model.

In the figure: 1. a housing; 2. a top cover; 3. a base; 4. a fixing groove; 5. a sliding groove; 6. a limiting block; 7. a pressure spring; 8. a connecting seat; 9. an inner housing; 10. an applicator; 11. a collector; 12. and a guard electrode.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 2 and 3, an ionization chamber structure for measuring activity comprises a shell 1 and an inner shell 9, wherein the shell 1 comprises a top cover 2 and a base 3, a fixing groove 4 for installation is formed in the bottom of the top cover 2, sliding grooves 5 are formed in two sides of the fixing groove 4 of the top cover 2, limiting blocks 6 are connected in the sliding grooves 5 in a sliding mode, and an applicator 10 is clamped and fixed between the limiting blocks 6.

The housing 1 and the inner housing 9 are both insulators.

The inner case 9 is filled with argon gas.

A current measuring device for detecting radioactivity is provided in the inner housing 9.

Wherein, the bottom of top cap 2 and the top of base 3 all are provided with connecting seat 8, and casing 1 passes through threaded connection connecting seat 8.

In this embodiment, as shown in fig. 2 and 3, through connecting seat 8, be convenient for carry out fixed connection with top cap 2 and base 3 to in order to realize quick assembly disassembly, change inside damage structure, control cost reduces the wasting of resources, and one side of connecting seat 8 all is provided with sealed the pad.

The sliding groove 5 is internally provided with a pressure spring 7 at one side of the limiting block 6.

In this embodiment, as shown in fig. 3, the compression spring 7 is convenient to use elasticity to quickly push the limiting block 6 to slide, so that the flexibility of the fixing mechanism in use is improved, and a fastening screw for fixing the limiting block 6 is arranged on one side of the upper cover 2 through a reserved opening.

Wherein, an inner shell 9 is arranged in the shell 1, an applicator 10 is positioned in the inner shell 9, and a collector 11 is arranged at the periphery of the inner shell 9.

In this embodiment, as shown in fig. 2, an electric field can be formed by the inner case 9, the applicator 10, and the collector 11, and the internal gas is ionized by the irradiated rays.

Wherein, the top and the bottom of the inner shell 9 are both provided with a protection electrode 12.

In this embodiment, as shown in fig. 2, the insulation of the inner case 9 is improved by the guard electrode 12, so that the interference of the leakage current to the signal is reduced.

It should be noted that, the utility model is an ionization chamber structure for measuring activity, during operation, first, the operator inserts the applicator 10 into the fixed slot 4 of the top cover 2, under the pushing of the elasticity of the pressure spring 7, the limiting block 6 clamps the two sides of the applicator 10 rapidly to perform preliminary fixing, then the operator screws the fastening screw to limit and fix the limiting block 6, then inserts the applicator 10 into the inner shell 9 and completes connection with external wiring, and rotates the top cover 2 and the base 3 respectively, so that the connecting seat 8 and the shell 1 are in threaded fixed connection, the operation is simple, the disassembly and assembly are rapid, the subsequent replacement efficiency of the internal damaged structure is improved, the utility model is more practical and reasonable, during operation of the ionization chamber, an electric field is formed between the applicator 10 and the collector 11, when the radiation is received, the gas in the inner shell 9 is ionized into electron-ion pairs, the two-stage movement is performed under the effect of the electric field to form ionization current, and then the ionization current signal is measured through the connected current measuring device.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An ionization chamber structure for measuring activity, comprising a housing (1) and an inner housing (9), characterized in that: the utility model discloses a device for applying a source, including casing (1), stopper (6) are connected with in sliding groove (5), fixed slot (4) have been seted up to the bottom in top cap (2) including top cap (2) and base (3), sliding groove (5) have all been seted up to the both sides that lie in fixed slot (4) in top cap (2), the centre gripping is fixed with between stopper (6) and is used for applying a source ware (10).

2. The ionization chamber structure of claim 1 wherein: the bottom of top cap (2) and the top of base (3) all are provided with connecting seat (8), and casing (1) is through threaded connection connecting seat (8).

3. The ionization chamber structure of claim 1 wherein: a pressure spring (7) is arranged on one side of the limiting block (6) in the sliding groove (5).

4. The ionization chamber structure of claim 1 wherein: an inner shell (9) is arranged in the shell (1), the applicator (10) is positioned in the inner shell (9), and a collector (11) is arranged at the periphery of the inner shell (9).

5. The ionization chamber structure of claim 1 wherein: the top and the bottom of the inner shell (9) are both provided with a protection electrode (12).