CN2692691Y - Gamma ray gas detector - Google Patents
Gamma ray gas detector Download PDFInfo
- Publication number
- CN2692691Y CN2692691Y CN 03266030 CN03266030U CN2692691Y CN 2692691 Y CN2692691 Y CN 2692691Y CN 03266030 CN03266030 CN 03266030 CN 03266030 U CN03266030 U CN 03266030U CN 2692691 Y CN2692691 Y CN 2692691Y
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- Prior art keywords
- chamber
- gamma
- vacuum heat
- preserving
- gas detector
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Abstract
The utility model discloses a gamma ray gas detector, comprising a detecting body, a chamber of a preamplifier and the preamplifier. The preamplifier is arranged in the chamber of the preamplifier. The utility model is characterized in that the gamma ray gas detector also comprises a vacuum humid room. The detecting body is hermetically arranged in the vacuum humid room. The preamplifier chamber is fixedly connected on one side of the humid room. The gamma ray gas detector can thoroughly solve the influence caused by the temperature change of the environment to the stability of the detector, increasing the long-term stability and accuracy of the nuclear scale.
Description
Technical field
The utility model relates to a kind of radiation detecting equipment, relates in particular to a kind of gamma-rays gas detector.
Background technology
The gamma-rays gas detector that existing uclear scale adopts mainly comprises three kinds, and a kind of is ionization chamber as the 6000X uclear scale that U.S. Kai Rui company (Kay-Ray) produces, and the patent No. is 95106808.3 small sensible weight uclear scale; Second kind is the G-M counter tube, is a kind of uclear scale of 89109044.4 as the patent No., U.S. Pat 3,361,911 disclosed a kind of uclear scales; The third is a proportional counter tube, is 91102590.1 disclosed uclear scales as the patent No..All there is a common shortcoming in gas detectors such as above-mentioned cited ionization chamber, G-M counter tube and proportional counter tube, and Here it is, and these detectors are subjected to the influence of environment temperature bigger.At present, some producers have taked some measures for eliminating Temperature Influence, as whole constant temperature and temperature compensation etc., though these schemes have some improvement to reducing temperature effect, all fail thoroughly to solve the problem that detector temperature is drifted about.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of gamma-rays gas detector that has the constant temperature effect, with the influence of thorough solution variation of ambient temperature to detector stability, thereby improves the long-time stability of uclear scale and the accuracy of scale.
To achieve these goals, the utility model provides a kind of gamma-rays gas detector, comprise and survey body, prime amplifier chamber and prime amplifier, it is indoor that prime amplifier is arranged on prime amplifier, its characteristics are, also comprise a vacuum heat-preserving chamber, described detection body is airtight, and to be installed in described vacuum heat-preserving indoor, and described prime amplifier chamber is fixedly connected on described vacuum heat-preserving chamber one side.
Above-mentioned gamma-rays gas detector, its characteristics are: described detection body is: ionization chamber, G-M counter tube or proportional counter tube.
Above-mentioned gamma-rays gas detector, its characteristics are: indoor left dead ring support, the right dead ring support of further comprising of described vacuum heat-preserving, described ionization chamber is installed on described left dead ring support and the right dead ring support.
Above-mentioned gamma-rays gas detector, its characteristics are: described ionization chamber comprises: metal cylinder shape high-pressure stage, collector, left and right sides electrode suppor, collector insulator, voltage pole insulator, gas outlet, the termination cover plate, described collector is installed on the electrode suppor of the described left and right sides and with described collector insulator and is connected, described high-pressure stage insulator is connected with described high-pressure stage, described collector insulator and high-pressure stage insulator are installed on the termination cover plate of described high-pressure stage tube one side, and described gas outlet is installed on the termination cover plate of described high-pressure stage tube opposite side; The electrode signal of described ionization chamber is guided to described prime amplifier by described insulator and is drawn through cable socket, and described ionization chamber is filled with the gases at high pressure of argon gas or xenon or argon gas and xenon mixing.
Above-mentioned gamma-rays gas detector, its characteristics are: described vacuum heat-preserving chamber enclosure is a metal tube, and its wall thickness is at 0.3-3mm, and its diameter is: 50-200mm, length 300-2000mm, the vacuum tightness of vacuum chamber is: 10
-3-10
-5Holder.
Above-mentioned gamma-rays gas detector, its characteristics are: described high-pressure stage and collection are very a plurality of, and be in parallel respectively separately.
Above-mentioned gamma-rays gas detector, its characteristics are: described vacuum heat-preserving chamber also is provided with the termination cover plate in relative ionization chamber gas outlet one side, also is provided with the vacuum heat-preserving chamber gas outlet on the cover plate of described termination.
Above-mentioned gamma-rays gas detector, its characteristics are: described prime amplifier chamber is equipped with cable socket by seal flange sealing on the described seal flange, and described cable socket is electrically connected with described prime amplifier.
Above-mentioned gamma-rays gas detector, its characteristics are: in described vacuum heat-preserving chamber gas outlet one side the termination closed chamber is installed also, and is sealed by the termination seal pad.
Adopt the gamma-rays gas detector of said structure, can thoroughly solve the influence of variation of ambient temperature, thereby improve the long-time stability of uclear scale and the accuracy of scale detector stability.
Further specify present embodiment below in conjunction with accompanying drawing
Description of drawings
Fig. 1 is a kind of bipolar ionization chamber synoptic diagram that has the vacuum heat-preserving chamber shown in the utility model
Fig. 2 is a kind of multipole ionization chamber synoptic diagram that has the vacuum heat-preserving chamber shown in the utility model
Embodiment
In Fig. 1 and Fig. 2, a kind of embodiment of the present utility model is the gamma-rays gas detector, mainly comprises: ionization chamber left side electrode suppor 1, ionization chamber left end epicranial plate 2, vacuum heat-preserving chamber left end epicranial plate 3, prime amplifier seal flange 4, high-pressure stage porcelain insulator 5, cable socket 6, prime amplifier 7, prime amplifier chamber 8, collector porcelain insulator 9, left side dead ring support 10, vacuum heat-preserving chamber enclosure 11, vacuum heat-preserving chamber 12, high electrode 13, collector 14, ionization chamber right-hand member epicranial plate 15, vacuum heat-preserving chamber right-hand member epicranial plate 16, vacuum heat-preserving chamber gas outlet 17, vacuum heat-preserving chamber right-hand member head seal pad 18, ionization chamber gas outlet 19, right dead ring support 20, the right electrode suppor 21 of ionization chamber, vacuum heat-preserving chamber 22, ionization chamber 23.Wherein, this ionization chamber 23 adopts the left dead ring support 10 and the right dead ring support 20 of polytetrafluoroethylmaterial material making to be supported in this vacuum heat-preserving chamber 12.
Vacuum heat-preserving chamber enclosure 11 is a stainless steel or steel or aluminum alloy drum.On vacuum heat-preserving chamber left end epicranial plate 3, be welded with high-pressure stage porcelain insulator 5 and collector porcelain insulator 9, vacuum heat-preserving chamber left end epicranial plate 3 is welded in vacuum chamber housing 11 left ends, be welded with a vacuum chamber gas outlet 17 on vacuum heat-preserving chamber right-hand member epicranial plate 16, this vacuum heat-preserving chamber right-hand member epicranial plate 16 is welded in vacuum chamber housing 11 right-hand members.Be protection vacuum tube chain tracheae 16, vacuum chamber 22 low order ends are welded with vacuum chamber right-hand member head seal pad 18, and vacuum chamber 22 is pumped into 10 by vacuum chamber gas outlet 17
-3～10
-5Vacuum tightness.The cylinder thickness of vacuum chamber housing 11 and ionization chamber 23 is decided on used radioactive source is different, is generally 0.3～3mm, as
241The Am radioactive source need adopt thin-walled, and its length can be decided according to the conveyer belt width, is generally 300mm～200mm, and its diameter can be φ 50～φ 200mm.
Below with
241The ionization chamber that has vacuum chamber that Am uses in the source is as being described as follows at embodiment of the present utility model:
The shell of ionization chamber 23 is the stainless-steel tube of 0.35mm, φ 70mm as high electrode thickness; collect very φ 1mm～φ 1.5mm stainless steel tubule or rod; the dead ring support of the electrode suppor of ionization chamber and vacuum chamber all adopts polytetrafluoroethylmaterial material; the termination cover plate adopts stainless steel material; porcelain insulator adopts the porcelain insulator that moisture-proof coating is arranged that has protection ring, is filled with the xenon argon mixture gas of 5～8 air pressure in the ionization chamber.Vacuum chamber housing is selected thick 1.5～2mm, φ 100～φ 120mm aluminium-alloy pipe, the preceding stainless-steel tube of putting cell φ=100～120mm for use; The termination cover plate and the seal pad of vacuum chamber can be selected stainless steel for use.The suction of vacuum chamber is 10
-3～10
-5
Claims (10)
1, a kind of gamma-rays gas detector, comprise and survey body, prime amplifier chamber and prime amplifier, it is indoor that prime amplifier is arranged on prime amplifier, it is characterized in that, also comprise a vacuum heat-preserving chamber, described detection body is airtight, and to be installed in described vacuum heat-preserving indoor, and described prime amplifier chamber is fixedly connected on described vacuum heat-preserving chamber one side.
2, gamma-rays gas detector according to claim 1 is characterized in that: described detection body is: ionization chamber, G-M counter tube or proportional counter tube.
3, gamma-rays gas detector according to claim 2 is characterized in that: indoor left dead ring support, the right dead ring support of further comprising of described vacuum heat-preserving, described ionization chamber is installed on described left dead ring support and the right dead ring support.
4, according to claim 2 or 3 described gamma-rays gas detectors, it is characterized in that: described ionization chamber comprises: metal cylinder shape high-pressure stage, collector, left and right sides electrode suppor, the collector insulator, the voltage pole insulator, gas outlet, the termination cover plate, described collector is installed on the electrode suppor of the described left and right sides and with described collector insulator and is connected, described high-pressure stage insulator is connected with described high-pressure stage, described collector insulator and high-pressure stage insulator are installed on the termination cover plate of described high-pressure stage tube one side, and described gas outlet is installed on the termination cover plate of described high-pressure stage tube opposite side; The electrode signal of described ionization chamber is guided to described prime amplifier by described insulator and is drawn through cable socket, and described ionization chamber is filled with the gases at high pressure of argon gas or xenon or argon gas and xenon mixing.
5, according to claim 1,2 or 3 described gamma-rays gas detectors, it is characterized in that: described vacuum heat-preserving chamber enclosure is a metal tube, and its wall thickness is at 0.3-3mm, and its diameter is: 50-200mm, and length 300-2000mm, the vacuum tightness of vacuum chamber is: 10
-3-10
-5Holder.
6, gamma-rays gas detector according to claim 4 is characterized in that: described vacuum heat-preserving chamber enclosure is a metal tube, and its wall thickness is at 0.3-3mm, and its diameter is: 50-200mm, and length 300-2000mm, the vacuum tightness of vacuum chamber is: 10
-3-10
-5Holder.
7, gamma-rays gas detector according to claim 1 is characterized in that: described high-pressure stage and collection are very a plurality of, and be in parallel respectively separately.
8, gamma-rays gas detector according to claim 1 is characterized in that: described vacuum heat-preserving chamber also is provided with the termination cover plate in relative ionization chamber gas outlet one side, also is provided with the vacuum heat-preserving chamber gas outlet on the cover plate of described termination.
9, gamma-rays gas detector according to claim 1 is characterized in that: described prime amplifier chamber is equipped with cable socket by seal flange sealing on the described seal flange, and described cable socket is electrically connected with described prime amplifier.
10, gamma-rays gas detector according to claim 8 is characterized in that: in described vacuum heat-preserving chamber gas outlet one side the termination closed chamber is installed also, and is sealed by the termination seal pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266030 CN2692691Y (en) | 2003-04-11 | 2003-06-25 | Gamma ray gas detector |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03245123.7 | 2003-04-11 | ||
| CN03245123 | 2003-04-11 | ||
| CN 03266030 CN2692691Y (en) | 2003-04-11 | 2003-06-25 | Gamma ray gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692691Y true CN2692691Y (en) | 2005-04-13 |
Family
ID=34796222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03266030 Expired - Fee Related CN2692691Y (en) | 2003-04-11 | 2003-06-25 | Gamma ray gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692691Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319222A (en) * | 2014-10-29 | 2015-01-28 | 中国原子能科学研究院 | Standard high-pressure ionization chamber and manufacturing method thereof |
| CN106501837A (en) * | 2016-12-07 | 2017-03-15 | 中国工程物理研究院材料研究所 | Detachable flow-gas proportional counter |
| CN107092037A (en) * | 2017-04-07 | 2017-08-25 | 北京华力兴科技发展有限责任公司 | detector assembly and vehicle inspection device |
| CN109490936A (en) * | 2018-12-28 | 2019-03-19 | 西安中核核仪器有限公司 | Integrate the γ radiation chamber detection system and method for low energy type and high energy type |
| CN113703030A (en) * | 2021-07-12 | 2021-11-26 | 中国核电工程有限公司 | Ionization chamber detector for measuring Kr-85 radioactive concentration |
| CN114696150A (en) * | 2020-12-31 | 2022-07-01 | 中核控制系统工程有限公司 | Detector based on three coaxial armored cables |
-
2003
- 2003-06-25 CN CN 03266030 patent/CN2692691Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319222A (en) * | 2014-10-29 | 2015-01-28 | 中国原子能科学研究院 | Standard high-pressure ionization chamber and manufacturing method thereof |
| CN106501837A (en) * | 2016-12-07 | 2017-03-15 | 中国工程物理研究院材料研究所 | Detachable flow-gas proportional counter |
| CN107092037A (en) * | 2017-04-07 | 2017-08-25 | 北京华力兴科技发展有限责任公司 | detector assembly and vehicle inspection device |
| CN107092037B (en) * | 2017-04-07 | 2024-05-14 | 北京华力兴科技发展有限责任公司 | Detector assembly and vehicle inspection device |
| CN109490936A (en) * | 2018-12-28 | 2019-03-19 | 西安中核核仪器有限公司 | Integrate the γ radiation chamber detection system and method for low energy type and high energy type |
| CN109490936B (en) * | 2018-12-28 | 2023-08-18 | 西安中核核仪器股份有限公司 | Gamma radiation ionization chamber detection system and method integrating low energy type and high energy type |
| CN114696150A (en) * | 2020-12-31 | 2022-07-01 | 中核控制系统工程有限公司 | Detector based on three coaxial armored cables |
| CN113703030A (en) * | 2021-07-12 | 2021-11-26 | 中国核电工程有限公司 | Ionization chamber detector for measuring Kr-85 radioactive concentration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |