CN206480591U - A kind of hollow cylindrical collector diagnoses ionisation chamber - Google Patents
A kind of hollow cylindrical collector diagnoses ionisation chamber Download PDFInfo
- Publication number
- CN206480591U CN206480591U CN201720231858.8U CN201720231858U CN206480591U CN 206480591 U CN206480591 U CN 206480591U CN 201720231858 U CN201720231858 U CN 201720231858U CN 206480591 U CN206480591 U CN 206480591U
- Authority
- CN
- China
- Prior art keywords
- collector
- ionisation chamber
- ionization
- hollow cylindrical
- ionisation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012212 insulator Substances 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000003745 diagnosis Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229920005479 Lucite® Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 230000006798 recombination Effects 0.000 abstract description 7
- 238000005215 recombination Methods 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
Abstract
Ionisation chamber is diagnosed the utility model discloses a kind of hollow cylindrical collector, it solves ionisation chamber in the prior art and collects the problem of area is small, sensitivity is not high enough, performance and accuracy of measurement with further lifting ionisation chamber, area is collected in increase, the effect of influence of the recombination losses to measurement is reduced, its technical scheme is：Including ionization chamber enclosure, collector, insulator and ionisation chamber base, it is characterised in that described collector is provided with ionisation chamber base located at the inside of ionization chamber enclosure, the bottom of described ionization chamber enclosure；Described collector is installed on ionisation chamber base by insulator, and closed ionisation chamber cavity is formed between described ionization chamber enclosure, collector and ionisation chamber base, and described collection extremely hollow-core construction collects area by hollow-core construction increase.
Description
Technical field
The utility model is related to Ionizing Radiation field, more particularly to a kind of diagnosis ionization of hollow cylindrical collector
Room.
Background technology
Ionisation chamber is a kind of using air as medium, by measuring the secondary that X-ray, gamma-rays are produced in ionisation chamber locular wall
Electronics acts on the ionization electric charge to be formed with room air, so as to obtain amount of radiation information, then measures radiation by secondary meter
Amount or radiation intensity.
Ionisation chamber is generally cavity structure, applies certain DC voltage formation electric field on shell and collector, passes through
Collector collects ionization electric charge.Collector is generally solid club shaped structure, collector entirety or outer wall conduction or the conductive painting of coating
Layer.Ionisation chamber is generally divided into two kinds of ventilation type and closed type, and different according to structure are divided into cylindrical type and plate again.For circle
Column type ionisation chamber, still presence collection area is small, not high enough the deficiency of sensitivity.
As Chinese patent CN202533587U discloses a kind of ion-chamber for intense gamma radiation field measurement under emergency conditions
Detector, including cylindrical stainless steel ionisation chamber probe and cable, stainless steel ionisation chamber probe are sealed by coaxial thin-wall stainless steel
Shell and the inner bag composition of structure, inner bag nexine collect extremely hollow aluminum cylinder.Although collector uses hollow cylinder knot
Structure, but it uses very small electrode spacing, it is therefore an objective to meet relatively low Lower Range and the high measurement upper limit.
In summary, the problem of collecting area for increase in the prior art, improve ionisation chamber sensitivity, still lacks effective
Solution.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of hollow cylindrical collector and diagnoses ionization
Room, it further lifts the performance and accuracy of measurement of ionisation chamber, and area is collected in increase, reduces shadow of the recombination losses to measurement
Ring.
The utility model uses following technical proposals：
A kind of hollow cylindrical collector diagnoses ionisation chamber, including ionization chamber enclosure, collector, insulator and ionisation chamber bottom
Seat, it is characterised in that described collector is provided with ionization located at the inside of ionization chamber enclosure, the bottom of described ionization chamber enclosure
Room base；Described collector is installed on ionisation chamber base by insulator, described ionization chamber enclosure, collector and ionization
Closed ionisation chamber cavity is formed between the base of room, described collection extremely hollow-core construction increases collection surface by hollow-core construction
Product.
Further, described collection is extremely cylindrical, and collector is used for collecting the electric charge of ionising radiation formation；From collection
The space for opening up cylinder at the top of pole in the axial direction forms hollow-core construction, so as to increase collection area, shortens getting over for electric charge
Time, reduce influence of the recombination losses to measurement.
Further, the bottom of described collector is connected with signal lead-out wire.
Further, the material of described collector is lucite.
Further, the outer surface of described collector is provided with graphite coating.
Further, described ionization chamber enclosure is cylinder, and described ionization chamber enclosure is external electrode.
Further, the material of described ionization chamber enclosure is lucite.
Further, the inwall of described ionization chamber enclosure is provided with graphite coating.
Further, the material of described ionisation chamber base is aluminium.
Further, the material of described insulator is polytetrafluoroethylene (PTFE), and insulator makes external electrode and collector highly exhausted
Edge, reduces superposition of the leakage current to useful signal and disturbs.
Further, a kind of hollow cylindrical collector diagnosis ionisation chamber can apply to radiation amount or radiation is strong
The measurement of degree.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model uses hollow collector, can lift the sensitivity of ionisation chamber, reduces ionisation chamber collector pair
The sink effect of low energy X ray, improves ionisation chamber energy accordingly, makes the energy response in the range of 50-150KV X-ray energy
Improve 0.2%；
2nd, hollow collector of the present utility model, can shorten the transition time of electric charge, and area is collected in increase, reduce compound
The influence to measurement is lost, under 250V polarizing voltages, 1Gy/min close rates recombination losses improve more than 0.3%.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the top view of collector of the present utility model；
Wherein, 1- ionizes chamber enclosure, 2- graphite coatings, 3- insulators, 4- signal lead-out wires, 5- collectors, 6- electricity
From room cavity, 7- ionisation chamber bases.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, there is the deficiency for collecting that area is small, sensitivity is not high enough in the prior art, in order to
Technical problem as above is solved, ionisation chamber is diagnosed present applicant proposes a kind of hollow cylindrical collector.
In a kind of typical embodiment of the application, there is provided a kind of diagnosis of hollow cylindrical collector as shown in Figure 1
Ionisation chamber, including ionization chamber enclosure 1, collector 5, insulator 3 and ionisation chamber base 7, described collector 5 are outdoor located at ionization
The inside of shell 1, the bottom of described ionization chamber enclosure 1 is provided with ionisation chamber base 7；Described collector 5 is installed by insulator 3
In on ionisation chamber base 7, ionisation chamber cavity 6, institute are formed between described ionization chamber enclosure 1, collector 5 and ionisation chamber base 7
The collector 5 stated is hollow-core construction, and area is collected by hollow-core construction increase.
Above-mentioned collector 5 is cylinder, and collector 5 is used for collecting the electric charge of ionising radiation formation；From the top of collector 5
The space for opening up cylinder in the axial direction forms hollow-core construction, so as to increase collection area, shortens the transition time of electric charge, subtracts
Few influence of the recombination losses to measurement.
The bottom of above-mentioned collector 5 is connected with signal lead-out wire 4.
The material of above-mentioned collector 5 is lucite.
The outer surface of above-mentioned collector 5 is provided with graphite coating.
Above-mentioned ionization chamber enclosure 1 is cylinder, and described ionization chamber enclosure 1 is external electrode；Described collector 5 is interior
Electrode, electric field is collected on external electrode and interior electrode plus polarizing voltage formation.
The material of above-mentioned ionization chamber enclosure 1 is lucite.
The inwall of above-mentioned ionization chamber enclosure 1 is provided with graphite coating.
The material of above-mentioned ionisation chamber base 7 is aluminium.
The material of above-mentioned insulator 3 is polytetrafluoroethylene (PTFE), and insulator 3 makes external electrode and the high-insulation of collector 5, is reduced
Superposition of the leakage current to useful signal is disturbed.
Above-mentioned hollow cylindrical collector diagnosis ionisation chamber can apply to the survey of radiation amount or radiation intensity
Amount.
In the another embodiment of the application, the height of above-mentioned collector 5 is 38mm, a diameter of Ф 4mm, described
The boring diameter of movement of collector 5 is Ф 2mm；Described ionizes the height of chamber enclosure 1 for 45mm, a diameter of Ф 32mm,
The wall thickness of described ionization chamber enclosure 1 is 0.4mm.
Above-mentioned hollow collecting pole structure can lift the sensitivity of ionisation chamber, reduce ionisation chamber collector 5 and low energy X is penetrated
The sink effect of line, improves ionisation chamber energy response, improves the energy response in the range of 50-150KV X-ray energy
0.2%；And the transition time of electric charge can be shortened, area is collected in increase, influence of the recombination losses to measurement be reduced, in 250V
Under polarizing voltage, 1Gy/min close rates recombination losses improve more than 0.3%.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of hollow cylindrical collector diagnoses ionisation chamber, including ionization chamber enclosure, collector, insulator and ionisation chamber bottom
Seat, it is characterised in that described collector is provided with ionization located at the inside of ionization chamber enclosure, the bottom of described ionization chamber enclosure
Room base；Described collector is installed on ionisation chamber base by insulator, described ionization chamber enclosure, collector and ionization
Closed ionisation chamber cavity is formed between the base of room, described collection extremely hollow-core construction increases collection surface by hollow-core construction
Product.
2. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described collection
It is extremely cylindrical.
3. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 2, it is characterised in that described collection
The bottom of pole is connected with signal lead-out wire.
4. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 2, it is characterised in that described collection
The material of pole is lucite.
5. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 2, it is characterised in that described collection
The outer surface of pole is provided with graphite coating.
6. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described ionization
Chamber enclosure is cylinder, and described ionization chamber enclosure is external electrode.
7. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described ionization
The material of chamber enclosure is lucite.
8. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described ionization
The inwall of chamber enclosure is provided with graphite coating.
9. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described ionization
The material of room base is aluminium.
10. a kind of hollow cylindrical collector diagnosis ionisation chamber according to claim 1, it is characterised in that described is exhausted
The material of edge body is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231858.8U CN206480591U (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231858.8U CN206480591U (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206480591U true CN206480591U (en) | 2017-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720231858.8U Expired - Fee Related CN206480591U (en) | 2017-03-10 | 2017-03-10 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206480591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783503A (en) * | 2017-03-10 | 2017-05-31 | 山东中测校准质控技术有限公司 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
-
2017
- 2017-03-10 CN CN201720231858.8U patent/CN206480591U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783503A (en) * | 2017-03-10 | 2017-05-31 | 山东中测校准质控技术有限公司 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
| CN106783503B (en) * | 2017-03-10 | 2018-05-25 | 山东中测校准质控技术有限公司 | A kind of hollow cylindrical collector diagnoses ionisation chamber |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 |
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| CF01 | Termination of patent right due to non-payment of annual fee |