CN103116177B - proportional counter cleaning device and cleaning method - Google Patents
proportional counter cleaning device and cleaning method Download PDFInfo
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- CN103116177B CN103116177B CN201310048490.8A CN201310048490A CN103116177B CN 103116177 B CN103116177 B CN 103116177B CN 201310048490 A CN201310048490 A CN 201310048490A CN 103116177 B CN103116177 B CN 103116177B
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- proportional counter
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Abstract
The invention discloses a kind of proportional counter cleaning device and cleaning method, is a kind of brand-new cleaning technique, is applicable to the cleaning of spectrometer particle detector.The present invention, by heating particle detection silk, removes the superincumbent booty of attachment, improves detector sensitivity, effectively can save maintenance cost, extend detector serviceable life.
Description
Technical field:
The present invention relates to instrument internal cleaning technique, be specifically applicable to cleaning device and the cleaning method of flow gas and closed proportional counter.
Background technology:
Proportional counter under x-ray bombardment, produces ionization with certain gas and forms the nuclear radiation detector that electric pulse is foundation, because its life-span is long, volume is little and can work at normal temperatures and have good energy resolution, it is the detector of wavelength dispersion X RF spectrometer indispensability.Still be widely used in energy dispersion XRF spectrometer.
In X fluorescence spectrometer, the quality of detector on final measurement impact greatly.And the factor affecting detector performance mainly contains following several respects:
1, the gas density of detector itself and purity change;
2, detector is contaminated, as detector internal dust, catches greasy dirt etc.;
3, detector interior metal thread tension declines.
All of these factors taken together all can make detector become " blunt ", and resolution and counting rate change, and can not meet user and use; Need the detector more renewed, increase corresponding cost.
Conventional proportional counter is generally divided into flow gas and closed, and higher for counter internal request cleanliness, user generally can not install by realizing self disassembling, and producer also adopts disposable embedding to weld.Counter for hydraulic performance decline can only be changed, and does not have the method for cleaning, and therefore proportional counter price comparison is expensive.
Summary of the invention:
In view of existing counter can not the problem of disassembly, cleaning, the object of the invention be to provide a kind of completely newly be applicable to flow gas, the cleaning device of closed proportional counter and cleaning method.The present invention can clean to extend its serviceable life to counter under the prerequisite not changing counter.
The technical solution used in the present invention is: a kind of proportional counter cleaning device, it comprises a microcontroller, described microcontroller and an on-off controller and power supply, pilot lamp, hummer are connected, power switch is had to control between described microcontroller and power supply, the positive and negative electrode of described on-off controller draws respectively and picks out a wiring, described positive terminal is connected with the negative pole of the detection silk of proportional counter, and described negative terminal is connected with the positive pole of the detection silk of proportional counter.
Described microcontroller adopts the control chip of PIC8 bit-type number.
Power supply conditioning chip and timer is also had inside described microcontroller.
Described on-off controller adopts miniature dpdt relay.
Described pilot lamp has two, and one is power light, another one relay indicating light.
A cleaning method for proportional counter cleaning device, uses aforementioned cleaning device, comprises the steps:
1) device connects: two of cleaning device wiring be connected with the detection silk of proportional counter, and the positive pole of cleaning device connects the negative pole of detection silk, and the negative pole of cleaning device connects the positive pole of detection silk;
2) turn on the power switch, applied the voltage of about 2v to counter by on-off controller, microcontroller automatically detects detector and whether cleaning device connects, if find the non-conducting of on-off controller, proportional counter cisco unity malfunction is described, microcontroller can not teletype command to on-off controller work; If on-off controller conducting, illustrate and connect normally, can cleaning be carried out;
3) under connecting normal situation, cleaning device starts cleaning after 3 seconds, and buzzer rings is reminded simultaneously, in Preset Time, complete cleaning.
The described time of once cleaning was set as 2 seconds.
Microcontroller acquiescence has once been cleaned, when not disconnecting proportional counter and cleaning device electrical connection, then every 30 seconds repeated washing once.
Cleaning way of the present invention is physics mode, does not change its physical attribute of cleaned material, is intended to make the foul of its surface attachment come off in this way.Cleaning device volume of the present invention is little, lightweight, good portability, and cleaning method of the present invention is novel unique, practical, operates simple and easy, and each instrument user of service can learn operation easily.Utilize cleaning method of the present invention and device, detector serviceable life can easily be extended, avoid and frequently change detector, reduce X fluorescence spectrum use cost.
Accompanying drawing illustrates:
Fig. 1 is proportional counter cleaning device pie graph;
Fig. 2 is proportional counter cleaning device work connection layout;
Fig. 3 is the change in count curve map of proportional counter before and after cleaning.
Embodiment:
Cleaning method of the present invention and application apparatus is illustrated below in conjunction with accompanying drawing.
The invention provides a kind of brand-new proportional counter cleaning device and cleaning method, it adopts electrothermal way cleaning, and its Cleaning principle is: utilize detection silk in detector to have certain resistance, when have electric current by time, by electric power formula P=I
2r is known, and detector can produce thermal effect and cause the heating of detection silk.The present invention's research shows, the tiny dust sintering be attached on detection silk can peel off by detection silk heating, thus makes the dust that peels off be discharged to the external world along with the working gas of flowing; Greasy dirt can evaporate under heating state, also can be discharged to the external world along with the working gas of flowing, reaches the object of the inner dust of cleaning proportional counter, greasy dirt with this.
Therefore, the present invention, by means of a cleaning device, to counter electrified regulation, reaches different cleaning performances by control conduction time and frequency.
This cleaning device mainly comprises following components: microcontroller 31, on-off controller 32, power supply 33, pilot lamp 34, hummer 35, wiring 36, power switch 37, shown in Figure 1: wherein, microcontroller 31 is all electrically connected with on-off controller 32, pilot lamp 34, hummer 35, and powered by power supply 33, between power supply 33 and microcontroller 31, have power switch 37 to control.Microcontroller 31 can adopt the control chip of PIC8 bit-type number, and microcontroller 31 li also has power supply conditioning chip in addition.
On-off controller 32 connects proportional counter 1, is specially: it is connected to detection silk 2 two ends of counter by two wiring 36, and the negative pole of wiring connects the positive pole of detection silk 2, and the positive pole of wiring connects the negative pole of detection silk 2, forms a series circuit, as shown in Figure 2.The effect of on-off controller 32 is for detector provides power supply and collection signal, can adopt miniature dpdt relay.
Whether the power supply that microcontroller 31 detects proportional counter 1 by on-off controller 32 is connected, and whether fracture of wire damages to detect silk by the voltage detecting of power supply conditioning chip loading about 2v, if in normal Standard resistance range, then apply this voltage and carry out cleaning.If not connect or detector internal detection silk damages, cleaning device can not work.
The predeterminable scavenging period of microcontroller 31 and interval time, scavenging period is generally several seconds, is generally 30 seconds interval time; Or do not establish interval time, be defaulted as cleaning once.Timer is had, self-clocking in microcontroller 31.
Pilot lamp 34 has two, and one is power supply instruction, and another one is as work instruction when exact connect ion detector.
Hummer 35 ring prompting work starts, and terminates ring after cleaning completes.
When using this device to clean, concrete method of operating is:
1) first two of cleaning device 3 wiring 36 be connected with the detection silk of proportional counter 1, shown in Fig. 2, the positive pole of cleaning device 3 connects the negative pole of proportional counter 1, and the negative pole of cleaning device 3 connects the positive pole of proportional counter 1;
2) 37 are turned on the power switch, and applied the voltage of about 2v to counter by on-off controller 32, microcontroller 31 automatically detects detector and whether cleaning device connects, if find the non-conducting of on-off controller 32, proportional counter 1 cisco unity malfunction is described, microcontroller 31 can not work to on-off controller 32 by teletype command; If on-off controller 32 conducting, illustrate that instrument connects normal, can cleaning be carried out;
3) in the normal situation of equipment connection, cleaning device will start cleaning after 3 preparatory stages in second, and hummer 35 ring is reminded simultaneously, has cleaned after the several seconds.In microcontroller, acquiescence has once been cleaned, if do not disconnect the connection of proportional counter and cleaning device, then every 30 seconds repeated washing once.
Be the counting rate of proportional counter in order to what prove the cleaning performance of apparatus of the present invention, under same test condition, before and after cleaning, counting rate significantly improves and illustrates that cleaning effectively.Show in the once test that the gas proportional counter testing Ca in X fluorescence spectrometer carries out for cleaning object, a contaminated gas proportional counter only has about 8000 to Ca counting rate, as shown in Figure 3, and with cleaning device of the present invention, each 2s is carried out to gap counter, after 1 to 2 cleaning, reload in X fluorescence spectrometer, under same test condition, can more than 10000 be reached to the counting rate of same sample, reached the counting rate standard of brand-new gas proportional counter to Ca.What Fig. 3 represented is the counting rate change curve that this gas proportional counter cleans front and back, and straight line end points 21 represents the front counting rate of cleaning, and end points 22 represents the rear counting rate of cleaning.
Counter integrated on-line cleaning also can be pulled down rear cleaning from instrument by cleaning device of the present invention.Cleaning way is physics mode, is intended to make the foul of its surface attachment come off in this way, does not need the physical attribute changing cleaned material.Cleaning device volume of the present invention is little, lightweight, good portability, and cleaning method of the present invention is novel unique, practical, operates simple and easy, and each instrument user of service can learn operation easily.Utilize cleaning method of the present invention and device, detector serviceable life can easily be continued, avoid and frequently change detector, reduce X fluorescence spectrum analysis cost.
Claims (8)
1. a proportional counter cleaning device, it is characterized in that: it comprises a microcontroller, described microcontroller and an on-off controller and power supply, pilot lamp, hummer are connected, there is power switch to control between described microcontroller and power supply, the positive and negative electrode of described on-off controller draws respectively and picks out a wiring; The positive terminal of on-off controller is used for being connected with the negative pole of the detection silk of proportional counter, and the negative terminal of on-off controller is used for being connected with the positive pole of the detection silk of proportional counter.
2. proportional counter cleaning device according to claim 1, is characterized in that: described microcontroller adopts the control chip of PIC8 bit-type number.
3. proportional counter cleaning device according to claim 1 and 2, is characterized in that: be provided with power supply conditioning chip and timer in described microcontroller.
4. proportional counter cleaning device according to claim 3, is characterized in that: described on-off controller adopts miniature dpdt relay.
5. proportional counter cleaning device according to claim 4, is characterized in that: pilot lamp has two, one is power light, another one relay indicating light.
6. utilize the method as the cleaning of one of claim 1 to 5 proportional counter cleaning device to be comprise the steps:
1) device connects: two of cleaning device wiring be connected with the detection silk of proportional counter, and the positive pole of cleaning device connects the negative pole of detection silk, and the negative pole of cleaning device connects the positive pole of detection silk;
2) turn on the power switch, applied the voltage of about 2v to counter by on-off controller, microcontroller automatically detects detector and whether cleaning device connects, if find the non-conducting of on-off controller, proportional counter cisco unity malfunction is described, microcontroller can not teletype command to on-off controller work; If on-off controller conducting, illustrate and connect normally, can cleaning be carried out;
3) under connecting normal situation, cleaning device starts to clean proportional counter after 3 seconds, and buzzer rings is reminded simultaneously, in Preset Time, complete cleaning.
7. proportional counter cleaning method according to claim 6, is characterized in that: the time of once cleaning was set as 2 seconds.
8. the proportional counter cleaning method according to claim 6 or 7, is characterized in that: microcontroller acquiescence has once been cleaned, when not disconnecting proportional counter and cleaning device electrical connection, then every 30 seconds repeated washing once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048490.8A CN103116177B (en) | 2013-02-06 | 2013-02-06 | proportional counter cleaning device and cleaning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310048490.8A CN103116177B (en) | 2013-02-06 | 2013-02-06 | proportional counter cleaning device and cleaning method |
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| CN103116177A CN103116177A (en) | 2013-05-22 |
| CN103116177B true CN103116177B (en) | 2015-11-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105929435A (en) * | 2016-04-19 | 2016-09-07 | 成都新核泰科科技有限公司 | Water radioactivity online real-time monitoring system |
| CN105911580A (en) * | 2016-04-19 | 2016-08-31 | 成都新核泰科科技有限公司 | Anti-interference water body radioactivity online real-time monitoring system |
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