CN201233384Y - Atmospheric air net gate pulse ionization chamber radon survey instrument - Google Patents

Atmospheric air net gate pulse ionization chamber radon survey instrument Download PDF

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Publication number
CN201233384Y
CN201233384Y CNU2008200641759U CN200820064175U CN201233384Y CN 201233384 Y CN201233384 Y CN 201233384Y CN U2008200641759 U CNU2008200641759 U CN U2008200641759U CN 200820064175 U CN200820064175 U CN 200820064175U CN 201233384 Y CN201233384 Y CN 201233384Y
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CN
China
Prior art keywords
ionization chamber
high pressure
pressure chest
gate pulse
atmospheric air
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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
Application number
CNU2008200641759U
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Chinese (zh)
Inventor
方方
陈伟
周伟
刘念聪
黄洪全
龚迪琛
崔妍
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Chengdu Univeristy of Technology
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Chengdu Univeristy of Technology
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Priority to CNU2008200641759U priority Critical patent/CN201233384Y/en
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Publication of CN201233384Y publication Critical patent/CN201233384Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an atmosphere pressure air mesh grid pulse ionization chamber-type radon gas measuring instrument, which comprises an atmosphere pressure air mesh grid pulse ionization chamber and a signal processor. The ionization chamber is a high-pressure cavity that is formed by weaving the metal wire, and the wall of the high-pressure cavity is fixedly connected with an annular outer insulation body, and the annular outer insulation body is fixedly connected with a protection ring, and a collecting electrode is arranged at the central part of the high-pressure cavity, and the collecting electrode is connected with an annular insulation element, and the annular insulation element is fixed inside an annular protection ring, namely, the protection ring is arranged between the inner and the outer insulation bodies, and the end, which is arranged outside the high-pressure cavity, of the collecting electrode is connected with the signal processor through a cable. The instrument has the advantages that the radon gas in the environment can be directly diffracted to the high-pressure cavity; under the effect of the direction-fixed electric field, the collecting electrode collects the charged particles to be delivered to the signal processor, thereby reflecting the concentration variation of the radon gas in the air.

Description

Atmospheric air net gate pulse ionization chamber type radon survey instrument
Technical field:
The utility model is a kind of environment radon survey that is used for of monitoring of environmental state instrument, is particularly suitable for the atmospheric air net gate pulse ionization chamber type radon survey instrument that the indoor and outdoor surroundings radon gas is measured in real time.
Background technology:
Radon gas is a kind of natural radioactivity harmful gas, when people breathe, radon gas and daughter thereof enter human body with air-flow, radon daughter is solid-state, after the people breathed, radon daughter constantly was deposited on the respiratory tract surface, constantly accumulation in regional area, tissue is formed long-term internal radiation, can cause diseases such as lung cancer, leukaemia and respiratory tract.This harm is indoor and underground is even more serious, and the radon concentration in underground residence is also just much higher than ground room, greatly about about 40 times.In order to control the harm of radon to human body, measuring that airborne radon gas just become is the important content of environment radon gas monitoring.China has issued many national standards, as " standard method of measurement of radon in the surrounding air " GB/T14582-93, " radon control criterion in the house " GB/T19146-1995, " hypogee and daughter control criterion thereof " GB/16356-1996, " room air standard " GB/T18883-2002 etc., airborne radon contents and assay method have been made regulation.
Instrument to radon survey has much in the market, but how to design more convenient, environment radon gas surveying instrument fast and effectively, is the target that people pursue always.
The utility model content:
The purpose of this utility model provides a kind of convenient, continuous atmospheric air net gate pulse ionization chamber type radon survey instrument of Environmental Radon fast and effectively.
The technical solution of the utility model is made up of atmospheric air net gate pulse ionization chamber and signal processor, as shown in Figure 1.Atmospheric air net gate pulse ionization chamber is the high pressure chest 1 that is formed by metal wire knitted; high pressure chest 1 wall is fixedlyed connected with annular outer insulator 5; annular outer insulator 5 is fixedlyed connected with protection ring 3; passive electrode 2 is arranged on centre in the high pressure chest 1; passive electrode 2 one ends are connected with annular insulating part 4; the other end is unsettled; also can be to being connected with the relative annular insulating part of establishing 4 on high pressure chest 1 wall; annular insulating part 4 is fixed in the protection ring 3, and the termination of passive electrode 2 outside high pressure chest 1 is connected with signal processor by cable.
The utility model is when work; add on the wire netting of high pressure chest 1 wall-high pressure of 900V; in order in high pressure chest 1, to produce directed electric field; stability for high-voltage electric field; usually can on high pressure chest 1, incorporate a nonpolarity high-voltage capacitance that capacitance is bigger into; should take care during operation; in order to avoid wounded by high pressure; air in the high pressure chest 1 can carry out with the air of external environment freely exchanging; under the usual condition; airborne radon is diffused in the high pressure chest 1 by wire gauze; cause gas ionization when charged particle enters high pressure chest 1 ionized field, the positive ion of generation and negative ion drift about to negative electrode and anode respectively under directed effect of electric field; interpolar forms electric current, a potential pulse occurs on the resistance that links with passive electrode 2.The amplitude of this potential pulse is represented the ionization amount size of incident particle, can carry out comparative counting to injecting particle thus, and total amount is measured.
Advantage of the present utility model is that the radon gas in the environment can directly freely be diffused in the high pressure chest 1, air after the ionization is by directed effect of electric field, after passive electrode 2 is collected charged ion, be transported to signal processor, thus the variation of radon gas concentration in the reflection air.
Description of drawings:
Fig. 1 atmospheric air net gate pulse ionization chamber structural representation.
Wherein: 1. high pressure chest, 2. passive electrode, 3 protection rings, 4. annular insulating part, 5. annular outer insulator
Embodiment:
The utility model is implemented by technique scheme, and the shape of high pressure chest 1 can be various, promptly can be shapes such as spheroidal, eggplant type, cylindrical, ellipse.The diameter of high pressure chest 1 is 95mm, and length is 120mm, and the length of passive electrode (2) is about 95mm.Critical piece in the signal processor: microprocessor adopts 8 single-chip microcomputer STC12C5410, and storer is selected I for use 2The CSI24WC64 of C bus, display select 88 sections LCD MODULE of little power consumption for use.
The utility model has the advantages that the radon gas in the environment can directly be diffused in the high pressure chest, at directed electric field Effect is lower, behind the charged particle that passive electrode is collected, reflects that air is dense thereby be transported to signal processor The variation of degree, convenient to use, and can measure the radon gas in the environment continuously.

Claims (2)

1. atmospheric air net gate pulse ionization chamber type radon survey instrument; form by atmospheric air net gate pulse ionization chamber and signal processor; it is characterized in that atmospheric air net gate pulse ionization chamber is the high pressure chest (1) that is formed by metal wire knitted; high pressure chest (1) wall is fixedlyed connected with annular outer insulator (5); annular outer insulator (5) is fixedlyed connected with protection ring (3); passive electrode (2) is arranged on the interior centre of high pressure chest (1); passive electrode (2) one ends are connected with annular insulating part (4); the other end can be unsettled; also can be to be connected with the relative annular insulating part of establishing (4) to passing on high pressure chest (1) wall; annular insulating part (4) is fixed in the protection ring (3), and the termination of passive electrode (2) outside high pressure chest (1) is connected with signal processor by cable.
2. it is characterized in that according to the described atmospheric air net of claim 1 gate pulse ionization chamber type radon survey instrument the shape of high pressure chest (1) can be various, promptly can be spheroidal, eggplant shape, cylindrical, ellipse etc.
CNU2008200641759U 2008-07-09 2008-07-09 Atmospheric air net gate pulse ionization chamber radon survey instrument Expired - Fee Related CN201233384Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200641759U CN201233384Y (en) 2008-07-09 2008-07-09 Atmospheric air net gate pulse ionization chamber radon survey instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200641759U CN201233384Y (en) 2008-07-09 2008-07-09 Atmospheric air net gate pulse ionization chamber radon survey instrument

Publications (1)

Publication Number Publication Date
CN201233384Y true CN201233384Y (en) 2009-05-06

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CNU2008200641759U Expired - Fee Related CN201233384Y (en) 2008-07-09 2008-07-09 Atmospheric air net gate pulse ionization chamber radon survey instrument

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CN (1) CN201233384Y (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011212A (en) * 2018-08-07 2018-12-18 中国原子能科学研究院 Wide for medical accelerator can atmospheric air ionisation chamber
CN109254314A (en) * 2018-11-15 2019-01-22 衡阳师范学院 Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency
CN109254313A (en) * 2018-11-15 2019-01-22 衡阳师范学院 Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency
CN109307880A (en) * 2018-11-15 2019-02-05 衡阳师范学院 Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency
CN109655858A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency
CN109655857A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency
CN109655859A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011212A (en) * 2018-08-07 2018-12-18 中国原子能科学研究院 Wide for medical accelerator can atmospheric air ionisation chamber
CN109254313B (en) * 2018-11-15 2022-08-12 衡阳师范学院 Multiple detectors for increasing positive charge 218 Po collection efficiency measurement cavity and method
CN109254313A (en) * 2018-11-15 2019-01-22 衡阳师范学院 Multi-detector improves positively charged218The measurement chamber and method of Po collection efficiency
CN109307880A (en) * 2018-11-15 2019-02-05 衡阳师范学院 Multi-electrode improves positively charged218The measurement chamber and method of Po collection efficiency
CN109254314B (en) * 2018-11-15 2022-06-21 衡阳师范学院 With ring electrodes increasing positive charge218Po collection efficiency measurement cavity and method
CN109254314A (en) * 2018-11-15 2019-01-22 衡阳师范学院 Annular electrode improves positively charged218The measurement chamber and method of Po collection efficiency
CN109307880B (en) * 2018-11-15 2022-08-12 衡阳师范学院 Multiple electrode positive charging 218 Po collection efficiency measurement cavity and method
CN109655858A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Multi-electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency
CN109655857A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Annular electrode improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency
CN109655859A (en) * 2018-12-14 2019-04-19 衡阳师范学院 Multi-detector improves Radon Exhalation Rate Measuring Apparatus pair218The measurement chamber and method of Po collection efficiency
CN109655857B (en) * 2018-12-14 2022-06-21 衡阳师范学院 Measuring instrument pair for improving radon exhalation rate by annular electrode218Measuring cavity and method for Po collection efficiency
CN109655858B (en) * 2018-12-14 2022-08-12 衡阳师范学院 Multi-electrode measuring instrument pair for improving radon exhalation rate 218 Po collection efficiency measurement cavity and method
CN109655859B (en) * 2018-12-14 2022-08-12 衡阳师范学院 Measuring instrument pair with multiple detectors for improving radon exhalation rate 218 Po collection efficiency measurement cavity and method

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Granted publication date: 20090506