CN102135627A - Free air detection array device with equal-interval co-high-pressure ultrathin-wall parallel plates - Google Patents
Free air detection array device with equal-interval co-high-pressure ultrathin-wall parallel plates Download PDFInfo
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- CN102135627A CN102135627A CN 201010567089 CN201010567089A CN102135627A CN 102135627 A CN102135627 A CN 102135627A CN 201010567089 CN201010567089 CN 201010567089 CN 201010567089 A CN201010567089 A CN 201010567089A CN 102135627 A CN102135627 A CN 102135627A
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Abstract
The invention relates to a free air detection array device with equal-interval co-high-pressure ultrathin-wall parallel plates, comprising a plurality of sets of detectors. All the detectors are placed in a high-pressure cabinet; each set of detector comprises a high-pressure pole plate and an insulating plate; a collecting pole plate of each detector is fixed on the insulating plate; and the collecting pole plates of every two adjacent detectors are separated in an insulating way through a metal plate. In the invention, the complete equal interval among the detectors is ensured; the high-pressure cabinet can be aerated through an air compensating valve when measuring sensitivity needs to be enhanced; because all the detectors are positioned at same high-pressure environments, a small amount of air leakage of the high-pressure cabinet has same influence on all the detectors without any influence on the measurement consistency of the detectors, thus the requirements for sealing of the high-pressure cabinet is greatly reduced by compensating the air when air pressure is obviously reduced; a sealing washer and bolts can be adopted for seal without adopting welded seal; and the free air detection array device has the advantages of simple structure, low cost and easy maintenance.
Description
Technical field
The present invention relates to the common high-pressure stage thin-walled parallel plate free air detector array array apparatus in a kind of ionising radiation detection technique field, particularly relate to the common high-pressure stage thin-walled parallel plate free air detection array device that a kind of real equidistantly line style is arranged.
Background technology
Array detecting device can be used for the dosage field distribution parameter measurement of accelerator, conjunction measuring circuit and analysis software, also can be used for the imaging of accelerator, especially the transmission-type numeral of carrying out ionising radiation for the large-sized object system that takes pictures generally realizes scanning survey with detector array.
No. 93102781.4 Chinese patent discloses a kind of existing " gas-ionization high energy X, gamma-radiation imaging array detecting device ".This sniffer is made up of tens groups of detector modules, please cooperate consult shown in Figure 1, each detector module mainly is made up of can top board 1, window 2, electrode system 3, electrode system bracing frame 4, shell side plate 5, metallic ceramics insulator 6, gas outlet 7 and reinforcement 8, wherein, electrode system 3 is made up of strip tabular high-pressure stage and collector.
Above-mentioned array detecting device, and though can have scanning survey function preferably, when using, reality finds also to have in its structure some shortcomings, and because of failing to reach the result of use of the best, and its shortcoming can be summarized as follows:
1, please cooperate and consult Fig. 2, shown in Figure 3, existing array detecting device normally the array package of every group of 24 detectors in a little sealed cabinet, owing to will add the gas that fills about 50 atmospheric pressure, make the thickness of high-voltage board about 2 centimetres, therefore make and respectively organize between the detector and can not equidistantly distribute, there is detection blind area in two groups of detector junctions, and the phenomenon of image offset occurs;
If 2 different high-voltage board leak rates are inconsistent, will influence the consistance of detector, therefore, very harsh to the sealing technology requirement of detector;
3, because electrode in the detector centre position, is subjected to the influence of vertical tremor easily.
This shows that above-mentioned existing array detecting device obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.How to found and a kind ofly can really realize equidistantly distributing between the detector, reduction is to the seal request of high-voltage board, thereby reduce the new equidistant high-pressure stage thin-walled parallel plate free air detection array device altogether of installation cost, the current industry utmost point of real genus needs improved target.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to, make it can really realize equidistantly distributing between the detector, reduction is to the seal request of high-voltage board, thereby the reduction installation cost overcomes the deficiency of the sniffer of existing array.
For solving the problems of the technologies described above, a kind of high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to of the present invention, form by many groups detector, all detectors all place a high-voltage board, every group of detector comprises a high-pressure polar plate and an insulcrete, the collecting plate of each detector is fixed on the insulcrete, and is separated by the sheet metal insulation between the collecting plate of adjacent detector.
As a kind of improvement of the present invention, described high-pressure polar plate and insulcrete are separately fixed on the inwall of detector both sides shell.
Be carved with groove on the described high-pressure polar plate, groove is embedded with insulation course, and insulcrete also is carved with groove on the relevant position, and sheet metal is by the groove fixed installation of high-pressure polar plate and insulcrete.
Described high-voltage board is provided with the tonifying Qi valve.
Equidistantly distribute between the described sheet metal.
Also be provided with on the described collecting plate and the equipotential protection utmost point of collecting plate.
Described high-voltage board adopts the bolt sealing, and adopts washer sealing.
Described high-pressure stage thickness of slab 5mm.
Described hickness of metal plate 5mm.
Described insulcrete is the teflon material.
After adopting such design, the present invention places an integral sealing high-voltage board to all detectors, guaranteed between the detector equidistant completely, on high-voltage board, stay the valve of a tonifying Qi, when needs improve measurement sensitivity, can inflate high-voltage board by the tonifying Qi valve, because all detectors are all in identical hyperbaric environment, the a spot of gas leakage of high-voltage board is identical to the influence of all detectors, can any influence not arranged to the detector measurement consistance, descend tonifying Qi when obvious just at air pressure, seal request to high-voltage board greatly reduces, and can adopt packing washer to add bolt seal, needn't adopt welded seal, simple in structure, maintenance with low cost and easy.
Description of drawings
Above-mentioned only is the general introduction of technical solution of the present invention, and for can clearer understanding technological means of the present invention, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the panel detector structure synoptic diagram of existing array detecting device.
Fig. 2 is the unitized construction synoptic diagram of two groups of existing detectors.
Fig. 3 is the local enlarged diagram at A place among Fig. 2.
Fig. 4 is the unitized construction synoptic diagram that the present invention equidistantly is total to high-pressure stage thin-walled parallel plate free air detection array device two adjacent groups detector.
Fig. 5 is the local enlarged diagram at B place among Fig. 4.
Fig. 6 is the electrode structure synoptic diagram that the present invention equidistantly is total to high-pressure stage thin-walled parallel plate free air detection array device.
Fig. 7 is the electrode high pressure synoptic diagram that the present invention equidistantly is total to high-pressure stage thin-walled parallel plate free air detection array device.
Embodiment
The present invention equidistantly is total to high-pressure stage thin-walled parallel plate free air detection array device, also is made up of many groups detector, but is that all detectors all are placed in the high-voltage board.
See also Fig. 4, shown in Figure 5, because the present invention respectively organizes detector and is unsealed free air formula design, can only separate each other by sheet metal, so distance can be very little, do not need thick shell, thereby can improve the position resolution of measurement, eliminate the dead pixel zone, really can realize between every group of detector equidistant completely.
Because all in identical hyperbaric environment, a spot of gas leakage of high-voltage board is identical to the influence of all detectors to all detectors, therefore any influence can not arranged to the consistance of detector measurement.Seal request to high-voltage board also decreases simultaneously, adopts the bolt sealing and adopts washer sealing to get final product, and greatly reduces the technological requirement of welded seal, has further reduced the cost of detector.
In addition, also can be high-voltage board the tonifying Qi valve is set, when needs improve to be measured sensitivity, or when air pressure obviously descends, inflate in high-voltage board by the tonifying Qi valve and to get final product, overcome the various defectives of prior art effectively.
See also Fig. 6, shown in Figure 7, the present invention is public integral high pressure pole plate 31 of every group of detector configuration and a public insulcrete 32.Wherein, it is very thick that high-pressure polar plate 31 can be done, and for example adopts the copper coin of thick 5mm to be processed into flat board, thereby strengthen the steadiness of pole plate, strengthens the anti-battle array performance of detector system, reduces the influence of vibrations to measuring.Insulcrete 32 can be processed by the teflon insulation body, and each detector independently collecting plate 33 is fixedly mounted on the insulcrete 32 then separated from one anotherly, and is separated by sheet metal 34 insulation between the collecting plate 33 of adjacent detector.
The present invention adopts the integral high pressure utmost point and the design of separate type collector structures, and every group of detector has only a high-pressure polar plate to be fixed on the side of detector, and structure is greatly simplified, the lower and easy maintenance of cost.
Preferable, high-pressure polar plate 31 and insulcrete 32 are separately fixed on the inwall of detector both sides shell, and on high-pressure polar plate 31 the ditch groove, groove is embedded with insulation course, insulcrete 32 also is carved with groove on the relevant position of high-pressure polar plate groove, 34 of sheet metals pass through the groove fixed installation on high-pressure polar plate 31 and the insulcrete 32.Requirement can be adjusted the spacing of dividing plate according to sensitive locations, keeps the spacing between the dividing plate to equate simultaneously.Sheet metal 34 can adopt the thick copper coin of 0.5mm, and is corresponding, and the ditch groove width 0.5mm of sheet metal, dark 0.2mm are installed.
In addition, also can set up the protection utmost point on collecting plate, the protection utmost point and collecting plate equipotential make Electric Field Distribution in the detector even and reduce leakage current.
During work, on the high-pressure polar plate 31 of detector, add high pressure, between high-pressure polar plate 31 and collecting plate 33, form high-voltage electric field, make the axis direction of detector consistent with the direction of beam, beam is injected detector after by object, make the gas generation ionization in the detector, the electronics that ionization produces forms electric current to the positive electrode drift under the effect of high-voltage electric field, and strength of current is directly proportional with the intensity of beam.Electric current can be converted into digital signal after being converted to voltage signal through amplifier again, handles through special software, can obtain the subject image that dosage field distributes and is scanned measurement.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (10)
1. one kind equidistantly is total to high-pressure stage thin-walled parallel plate free air detection array device, form by many groups detector, it is characterized in that all detectors all place a high-voltage board, every group of detector comprises a high-pressure polar plate and an insulcrete, the collecting plate of each detector is fixed on the insulcrete, and is separated by the sheet metal insulation between the collecting plate of adjacent detector.
2. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described high-pressure polar plate and insulcrete are separately fixed on the inwall of detector both sides shell.
3. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 2, it is characterized in that being carved with groove on the described high-pressure polar plate, groove is embedded with insulation course, insulcrete also is carved with groove on the relevant position, sheet metal is by the groove fixed installation of high-pressure polar plate and insulcrete.
4. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described high-voltage board is provided with the tonifying Qi valve.
5. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that equidistantly distributing between the described sheet metal.
6. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that also being provided with on the described collecting plate and the equipotential protection utmost point of collecting plate.
7. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described high-voltage board adopts the bolt sealing, and adopts washer sealing.
8. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described high-pressure stage thickness of slab 5mm.
9. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described hickness of metal plate 5mm.
10. the high-pressure stage thin-walled parallel plate free air detection array device that equidistantly is total to according to claim 1 is characterized in that described insulcrete is the teflon material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010567089 CN102135627A (en) | 2010-11-25 | 2010-11-25 | Free air detection array device with equal-interval co-high-pressure ultrathin-wall parallel plates |
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| CN 201010567089 CN102135627A (en) | 2010-11-25 | 2010-11-25 | Free air detection array device with equal-interval co-high-pressure ultrathin-wall parallel plates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005069A (en) * | 2015-07-08 | 2015-10-28 | 清华大学 | Multi-gap resistive plate chamber detector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108587A (en) * | 1985-11-15 | 1987-07-15 | 老代尔夫特光学工业有限公司 | Dosimeter for ionizing radiation |
| WO2010106193A1 (en) * | 2009-03-20 | 2010-09-23 | Ion Beam Applications S.A. | Device and method for monitoring a hadron beam |
| CN201917667U (en) * | 2010-11-25 | 2011-08-03 | 北京康卫瑞德科技有限公司 | Free air detection array device with equal-interval, common high-pressure stage and thin-wall parallel plate |
-
2010
- 2010-11-25 CN CN 201010567089 patent/CN102135627A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108587A (en) * | 1985-11-15 | 1987-07-15 | 老代尔夫特光学工业有限公司 | Dosimeter for ionizing radiation |
| WO2010106193A1 (en) * | 2009-03-20 | 2010-09-23 | Ion Beam Applications S.A. | Device and method for monitoring a hadron beam |
| CN201917667U (en) * | 2010-11-25 | 2011-08-03 | 北京康卫瑞德科技有限公司 | Free air detection array device with equal-interval, common high-pressure stage and thin-wall parallel plate |
Non-Patent Citations (2)
| Title |
|---|
| 《原子能科学技术》 20080930 孟宪芳等 一种新型多阳极电离室的研制 第42卷, * |
| 《物理学和经济建设》 19991231 王利民等 数字式X射线辐射扫描成像系统及其应用 第28卷, 第4期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005069A (en) * | 2015-07-08 | 2015-10-28 | 清华大学 | Multi-gap resistive plate chamber detector |
| CN105005069B (en) * | 2015-07-08 | 2018-08-28 | 清华大学 | Multi-gap resistive plate chamber detector |
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Application publication date: 20110727 |