CN201043963Y - Ion spraying and coating type ground and air radon-thoron measuring instrument - Google Patents
Ion spraying and coating type ground and air radon-thoron measuring instrument Download PDFInfo
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- CN201043963Y CN201043963Y CNU2007200832963U CN200720083296U CN201043963Y CN 201043963 Y CN201043963 Y CN 201043963Y CN U2007200832963 U CNU2007200832963 U CN U2007200832963U CN 200720083296 U CN200720083296 U CN 200720083296U CN 201043963 Y CN201043963 Y CN 201043963Y
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- atmosphere
- radon
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- thoron
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Abstract
The utility model discloses an ion-spraying type radon and thoron detector, which comprises a shell and a panel. The inner of the shell is equipped with a daughter collection of radon and thoron, an aleph-ray measurement, an ion-spraying, an atmosphere circuit, a surface-atmosphere circuit, and a power supply. Massive ionic atmosphere generated by burr electrode which is exerted with high voltage by operation and measurement hardware and software charges the daughters of radon and thoron, and then collects and measures by sampling plate with opposite voltage. Thus the device is with excellent sensitivity when measuring radon and thoron in atmosphere and soil, with no need of filter membrane and strong pump. Therefore, the utility model can do mute operation and rapid data acquisition, and can save energy, with simple structure, small size and light body, resisting electromagnetic interference and environment high humidity interference.
Description
Technical field
The utility model relates to a kind of measuring apparatus, especially a kind of empty radon thoron measuring instrument
Background technology
Radon in the atmosphere is a gaseous state radioactive nuclide that is detrimental to health, so become a generally acknowledged environment conventional sense project.Radon in the ground vapour (soil gas) and thoron then are positive factors.Use it and can seek mineral products, tectonic structure, oil gas field, underground water reach to being applied to earthquake prediction.Independent atmosphere emanometer device has been arranged, independent ground vapour emanometer device has also been arranged.But two kinds to survey the instrument that the radon function haves both at the same time just few, and having two kinds, to survey hold concurrently the again simultaneously instruments of surveying the thoron functions of radon functions existing abroad, but China does not still have at present.And abroad all do not have with Chinese at present the reaching of ground empty radon thoron surveying instrument of highly sensitive plasma spray mode work.
The measurement of radon can be divided into cumulative measurement and transient measurement according to the length of Measuring Time.Cumulative measurement needs a couple of days and even several months just can obtain the result, and transient measurement only needed several minutes to tens of minutes can obtain the result.Instantaneous atmosphere at high sensitivity weak point consuming time is surveyed the radon field, both at home and abroad among the authoritative emanometer of generally acknowledging, when first-elected two filter membrane emanometers.It is with the radon daughter in the way collection atmosphere of membrane filtration, to determine the amount of radon.Up to today, though this quasi-instrument is still a kind of instrument in usefulness, it has met with many-sided challenge since the many decades.People have seen its three weakness: gas leakage, heavy, fearness tide.Owing to there is the problem of these aspects, make that many these quasi-instruments running several years just can't operate as normal and laid aside and neglected.People expect that for a long time a kind of sensitivity can compare with two filter membrane instruments for a long time, but the atmosphere emanometer device of life-span length, humidity, small volume and less weight.
Because there are such fact in principle and structure difference in survey radon field, highly sensitive atmosphere emanometer device but can't be measured the ground vapour radon of high concentration.The relatively low ground vapour surveying instrument of sensitivity also can't be measured the atmosphere radon.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of not empty radon thoron of filter membrane and ion spraying type powerful pump, highly sensitive, not affected by environment ground measuring instrument with new technology.
The technical solution of the utility model is: the method with plasma spray forces radon daughter charged, uses the high efficiency collection of charged metal film then.Acquisition method with other daughters such as this alternative filter membranes.With the atmosphere air-channel system that atmosphere duct, mini fan, plasma spray chamber, sampled measurements chamber constitute, can measure the atmosphere radon.Can measure the ground vapour radon with the ground vapour air-channel system that ground feed channel, micropump, plasma spray chamber, sampled measurements chamber constitute.No matter the analytic function of the pulse height of atmosphere or ground vapour applying electronic circuit all can carry out the measurement of radon concentration thoron concentration.
Instrument is established two kinds of working methods: " adopt afterwards earlier and survey " reaches " Bian Caibian survey ".The former gathers daughter earlier to measure then.The latter measures when gathering daughter.Dual mode is selected for the user, to satisfy the applications of different radon concentration.Instrument can be worked in the mode of a survey.This is the routine work mode of ENVIRONMENT RADON CONTENT.Instrument can be worked in the mode of continuous coverage.This is that the long-term 24 hours needed working methods of uninterrupted measurement are carried out in certain fixed location of environment.Instrument is gathered daughter has two kinds of films can supply to select for use: golden film and aluminium film.The gold film is made thick 0.1 micron with proof gold, can be in order to a survey, but be mainly used in tie-in.The aluminium film is made with fine aluminium, thick 5 microns, is mainly used to a survey.Gold film and aluminium film all can use repeatedly.
Advantage of the present utility model is: the utility model ion spraying type ground empty radon thoron measuring instrument, and its sensitivity can be compared with two filter membrane instruments of trump when surveying the atmosphere radon, and its sensitivity is then far above other Soil Radon measuring instrument in usefulness when measuring the ground vapour radon.The strong electromagnetic that the utility model apparatus structure is simple, body is light in a small amount, can resist environment.Be not subjected to the influence of the humidity of environment yet,, need not to be equipped with drying agent such as silica gel and still can operate as normal yet even at 100% high humidity environment.
Description of drawings
Fig. 1 is instrument panel figure described in the utility model;
Fig. 2 is the cut-away view that the empty radon thoron in plasma spray described in the utility model ground is measured;
Fig. 3 is the utility model instrument measuring system electronic circuit block diagram.
Embodiment
Referring to Fig. 2, plasma spray described in the utility model ground empty radon thoron measuring instrument comprises panel 20, housing 19.Being arranged on has daughter acquisition system, alpha ray measuring system, plasma spray system, atmosphere air-channel system, ground vapour air-channel system, electric power system, operating system in the housing.
Described panel is seen Fig. 1, is distributed with atmospheric connection on it, charging jack, ground vapour inlet, power switch, atmosphere, ground vapour outlet, LCDs, printer, touch operating key.Panel material is made by aluminium alloy, to avoid extraneous electromagnetic interference (EMI).
Described housing 19 is made by aluminium alloy, in order to avoid the electromagnetic interference (EMI) in the external world.
Described daughter acquisition system is meant the collection of radon thoron daughter, and it is made of sampled measurements chamber 2, and it comprises alpha ray semiconductor detector and sampling sheet.The sampling sheet is collected from the radon thoron daughter of plasma spray chamber 1, and the semiconductor supply detector is measured.
Described alpha ray measuring system comprises sampled measurements chamber 2, plate 3, pull handle 18.αShe Xiantanceqi and sampling sheet are installed on the plate, the sampling sheet can be pulled out by pull handle 18, are convenient to change at any time the sampling sheet of having used.The surface of contact of pull handle and shell should be smeared the silicone oil of thickness with anti-gas-leak.
Described plasma spray system comprises 1, the ten thousand volt of high voltage block 4 in plasma spray chamber.Applied the needle electrode array of ten thousand volts of high pressure, produced a large amount of ion-atmospheres, forced the daughter of radon thoron charged according to cold emission of ions principle.The selection of needle electrode, size and layout are the keys of decision atomize quality.
Described atmosphere air-channel system comprises that the track route after gas circuit 16 and mini fan 5 atmosphere are extracted is: atmospheric connection 13---gas circuit 16---plasma spray chamber 1---plate 3---mini fan 5---gas circuit 16---atmosphere, ground vapour outlet.Atmosphere enters before the plasma spray chamber 1, links to each other with ground vapour gas circuit 17, because the air intake opening and the gas outlet of micropump 10 all have one-way, so can not make the atmosphere of admission line be escaped by the ground vapour inlet.The power of atmosphere gas circuit is blower fan, and the pressure differential that it produces is little, but ventilation is very big, has guaranteed the high sensitivity of atmosphere survey radon.
Described ground vapour air-channel system comprises ground vapour inlet 14, ground feed channel 17, micropump 10, atmosphere ground vapour outlet 15.---ground feed channel 17---micropump 10---pipeline 17---plasma spray chamber 1---plate 3---mini fan 5---pipeline 16---atmosphere ground vapour outlet 15 that track route after ground vapour is extracted is: ground vapour inlet 14.(mini fan is closed when carrying out the ground vapour measurement) its air intake opening and gas outlet were not reversible when mini fan was not worked, and air-flow can free in and out, so the mini fan on the flow route can not hinder the circulation of ground vapour.The ground vapour of sending from micropump 10 must just can enter plasma spray chamber 1 through one section atmosphere duct 16.For preventing that ground vapour from being leaked by atmospheric connection 13, when carrying out to seal with the spiral cover of getting ready when ground vapour is measured.
Owing to will in soil, gather ground vapour, so will get three things ready: Luoyang Spade, soil digging spoon, cover plate.One of Luoyang Spade is that shovel is used to burrow, and the other end is that hoe is used for the weeding shoveling.The soil digging spoon is used for the hole soil digging, and handle length should be not less than 50cm.Cover plate is of a size of 30cm * 30cm, and material can be selected the leatheret of ground, room, shop or desktop, also available thicker plastic foil for use.
When measuring the ground vapour radon, burrow footpath, hole 10cm * 10cm, the dark 40-60cm in hole in the place weeding of choosing.Proofed sleeve (conventional medical rubber pipe, the about 150cm of length) is put at the bottom of the hole, and for preventing that in the grogs suction pipe, tube head should wrap up two layers of gauze, the proofed sleeve outside the hole enters the mouth with the ground vapour of instrument and is connected.The hole is covered with cover plate, and periphery blocks up and tread with grave in case atmosphere gas leakage.Start instrument and can carry out the measurement of ground vapour radon thoron.
Described electric power system comprises 12V rechargeable battery pack 7, power panel 8.The 12V electric battery was enough to guarantee the instrument continuous working 8 hours after being full of electricity.Power panel is equipped with the AC/DC functional block, the DC/DC functional block guarantee to the instrument each several part provide ± 12V ,+5V and+electric energy of 90V.
Described operating system comprises the touch operating key on single-chip microcomputer plate 9 and the instrument panel, in order to concerted action and the operate as normal of controlling each parts of instrument.
Accompanying drawing 3 is instrument measuring system electronic circuit block diagrams, roughly the course of work is as follows for it: the alpha ray that the radon thoron daughter that the sampling sheet is adopted is discharged, incide the sensitive layer of gold silicon surface barrier semiconductor detector, under the effect of α particle, produce a large amount of electron-hole pairs immediately, under electric field action, move and form Weak current to both positive and negative polarity respectively and behind charge amplifier and linear amplifier, just become irregular electric pulse with certain amplitude, after pulse shaping circuit and pulse height analyzer, its quantity of these full sized puless is directly related with the α number of particles, its amplitude is relevant with the energy of α particle, through after back interlock circuit and the device processing processing, just can obtain corresponding radon concentration and thoron concentration again.
Claims (1)
1. the measuring instrument of the empty radon in ion spraying type ground, it is characterized in that: this measuring instrument comprises housing (19), panel (20), and housing is provided with the daughter collection in (19), alpha ray is measured, plasma spray, atmosphere gas circuit, ground vapour gas circuit, power supply; The daughter collection comprises plasma spray chamber (1) that is made of serial burr electrode and the sampler chamber (2) that is made of metal sampling sheet and active plugboard (3), the daughter collection is positioned at the bottom of instrument shell, the bottom of sampled measurements chamber (2) in shell, ion shoots out the top of chamber (1) in sampled measurements chamber (2), active plugboard (a 3) part is in sampled measurements chamber (2), and a part is positioned at outside the sampled measurements chamber (2); By pull handle (18) active plugboard (3) is pulled out outside the shell by track, metal sampling sheet is placed on the α semiconductor detector, and the α semiconductor detector is fixed on the center section that active plugboard (3) is positioned at sampled measurements chamber (2); The alpha ray measurement comprises the amplifier piece, comprising the α semiconductor detector, charge amplifier, linear amplifier, shaping circuit, pulse height analyzer, counting circuit, pull handle (18), printer (12), hummer (11) and place touch operating key on the panel, amplifier piece (6) is positioned at housing, bottom at housing, the left side in sampled measurements chamber (2), a hummer (11) is arranged above the amplifier piece, touch operating key is positioned at the lower right of panel, and pull handle (18) is connected with active plugboard (3) in the bottom of shell (19); Plasma spray comprises plasma spray chamber (1) and the ten thousand volts of high-voltage power supply pieces (4) that are made of the burr electrod-array, and ten thousand volts of high-voltage power supply pieces (4) are positioned at the top of active plugboard (3) near the right; The path that the atmosphere gas circuit is made up of atmospheric connection (13), gas circuit (16), mini fan (5), atmosphere outlet (15), mini fan (5) is positioned at the middle upper part of active plugboard (3), atmospheric connection (13) links to each other with atmosphere duct (16), atmosphere duct (16) links to each other with plasma spray chamber (1), link to each other with atmosphere duct (16) by mini fan (5), atmosphere duct (16) links to each other with atmosphere outlet (15); The path that the ground vapour gas circuit is made up of ground vapour inlet (14), gas circuit (17), micropump (10), ground vapour outlet (15), the limit of keeping right, the top that micropump (10) is positioned at plasma spray chamber (1), the gas flow of micropump (10) is unidirectional, ground vapour inlet (14) links to each other with ground feed channel (17), ground feed channel (17) links to each other with the air intake opening of micropump (10), the exhausr port of micropump (10) links to each other with ground feed channel (17), and ground feed channel (17) is connected in mutually with plasma spray chamber (1); Electric power system comprises the power switch on the panel, charging jack and power panel (8) are comprising the AC/DC piece, the DC/DC piece ,+90V power supply, ± 12V power supply, ± 5V power supply, 12V rechargeable battery pack (7), 12V can not have electric electric battery (7) be positioned at ten thousand volts of high voltage block (4) directly over, have fixed mount to fix, power panel (8) has fixed mount to fix directly over 12V rechargeable battery pack (7); Link to each other with power panel (8) by 12V rechargeable battery pack (7) or by the charging jack, power panel (8) is micropump (10), mini fan (5), single-chip microcomputer plate (9), ten thousand volts of high voltage block (4), amplifier piece (6), hummer (11) and printer (12) power supply, single-chip microcomputer plate (9) be positioned at power panel (8) directly over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200832963U CN201043963Y (en) | 2007-01-22 | 2007-01-22 | Ion spraying and coating type ground and air radon-thoron measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200832963U CN201043963Y (en) | 2007-01-22 | 2007-01-22 | Ion spraying and coating type ground and air radon-thoron measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043963Y true CN201043963Y (en) | 2008-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200832963U Expired - Lifetime CN201043963Y (en) | 2007-01-22 | 2007-01-22 | Ion spraying and coating type ground and air radon-thoron measuring instrument |
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| CN (1) | CN201043963Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487824A (en) * | 2013-09-26 | 2014-01-01 | 东华理工大学 | Radon daughter sampling device based on high-voltage corona discharge |
-
2007
- 2007-01-22 CN CNU2007200832963U patent/CN201043963Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487824A (en) * | 2013-09-26 | 2014-01-01 | 东华理工大学 | Radon daughter sampling device based on high-voltage corona discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGXI BEIER SCIENCE INDUSTRY CO., LTD. Free format text: FORMER OWNER: LI SHUMIN; PATENTEE Effective date: 20080613 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080613 Address after: Baer Science Park, No. 900, hi tech Avenue, Jiangxi, Nanchang Province, China: 330096 Patentee after: Jiangxi Baer Technology Industry Co., Ltd. Address before: East China Institute of Technology, Fuzhou, Jiangxi, zip code: 334000 Co-patentee before: Yang Yaxin Patentee before: Li Shu min Co-patentee before: Liu Qingcheng Co-patentee before: Chen Henggui |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080402 |
|
| EXPY | Termination of patent right or utility model |