CN102818906B - Automatic ventilation type balloon emanometer - Google Patents
Automatic ventilation type balloon emanometer Download PDFInfo
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- CN102818906B CN102818906B CN201210337441.1A CN201210337441A CN102818906B CN 102818906 B CN102818906 B CN 102818906B CN 201210337441 A CN201210337441 A CN 201210337441A CN 102818906 B CN102818906 B CN 102818906B
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- gas
- emanometer
- balloon
- radon
- main frame
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Abstract
The invention discloses an automatic ventilation type balloon emanometer, comprising a main engine, a radon gas collecting chamber and a triangular bracket. The main engine comprises a radon gas sampling device, an automatic gas path converting device and a probe, wherein the radon gas sampling device is used for collecting and filtering radon gas; and the automatic gas path converting device is used for smoothly converting gas paths in a process of pumping or venting gas to a balloon, so that a reversible airflow loop is realized. According to the automatic ventilation type balloon emanometer provided by the invention, the radon gas sampling device and the probe are mounted in the same main engine, and the step of manually replacing the gas paths is omitted through the automatic gas path converting device, so that the leakage of gas in a manual replacement process can be avoided, and the reliability of the balloon emanometer can be improved; and the automatic ventilation type balloon emanometer is mounted on the triangular bracket, so as to be conveniently used outdoors.
Description
Technical field
The present invention relates to a kind of emanometer, relate in particular to a kind of automatic air exchanging type balloon emanometer.
Background technology
Radon gas is a kind of radioactive gas, and in radioactive series uranium series, its half life period is 3.824 days; Its first generation daughter
218the half life period of Po is 3.05min, second generation daughter
214the half life period of Pb be 26.8min, third generation daughter
214the half life period of Po is 26.8min.Measuring Radon by Balloon Method is exactly a kind of radon method of surveying fast and accurately, has the features such as easy and simple to handle, easy to carry, sensitivity height.
Measuring Radon by Balloon Method is divided into following double teacher, bleeds the stage, and loitering phase, exhaust phase, daughter measuring phases and radon survey stage.Bleed the stage, at air intake opening, filter membrane 1 be installed, with the speed of 30L/min, in balloon, bleed 5 minutes, the radon daughter in atmosphere is all collected on filter membrane 1, enter in balloon for not containing the radon gas of radon daughter; Loitering phase, standing wait 5 minutes, making the radon gas decay in balloon is its first generation daughter
218po; Exhaust phase, installs filter membrane 2 in gas outlet, with the speed exhaust of 30L/min, in balloon, the daughter of the new decay of radon gas is collected on filter membrane 2; Daughter measuring phases, in exhaust in the time of 2 minutes, collects filter membrane 1 by daughter and puts into probe and measure, and Measuring Time is 3 minutes; The radon survey stage, by radon gas collect filter membrane 2 put into probe measure, Measuring Time is 10 minutes.Measuring Radon by Balloon Method all 26 minutes consuming time.
Existing instrument for measuring radon generally forms by measuring main frame and independent sample device, and owing to adopting the structure of split, every instrument need be equipped with independent power-supply system, and instrument integration degree is low, and reliability is not high, portably uses inconvenience.In addition, the gas circuit circulation of existing instrument is unidirectional, the time of bleeding is by manual control, and Measuring Radon by Balloon Method need carry out double sampling and twice measurement, this just causes in use must manually change filter membrane, very easily cause radon gas gas leakage affect the accuracy of result, and manual control sampling pump rise/stop be difficult to accurate control and bleed the time.
Summary of the invention
For solving the problem and blemish of above-mentioned middle existence, the invention provides a kind of automatic air exchanging type balloon emanometer.It is inaccurate that this automatic air exchanging type balloon emanometer can effectively solve the gas leakage and the Measuring Time that in existing balloon emanometer artificial ventilation process, exist, and the problems such as inconvenience are carried in field.Described technical scheme is as follows:
An automatic air exchanging type balloon emanometer, comprising:
Main frame, radon gas collecting chamber and A-frame, described main frame comprises radon gas sampling apparatus, gas circuit automatic switching control equipment and probe, wherein
Radon gas sampling apparatus, for collecting filtration to radon gas;
Gas circuit automatic switching control equipment, for bleeding to balloon or during balloon exhaust, the unimpeded switching between gas circuit, has realized gas flow loop reversible.
The beneficial effect of technical scheme provided by the invention is:
1, the sampling of radon gas and measuring process are integrated into a main frame and complete, reduced instruments weight, facilitated field to carry, improved whole reliability.
2, design gas circuit automatic switching control equipment, made to carry out not needing to take off balloon in process at Measuring Radon by Balloon Method, reduced the leakage of radon gas.Meanwhile, adopt gas circuit to automatically switch and can strictly observe the time rule of Measuring Radon by Balloon Method, make measurement result more accurately, reliably.
3, in instrument bottom, there is rack positioning hole, can be according on A-frame, easy to use.
Accompanying drawing explanation
Fig. 1 is automatic air exchanging type balloon emanometer structural representation;
Fig. 2 is gas circuit automatic switching control equipment structural drawing;
Fig. 3 is automatic air exchanging type balloon emanometer system construction drawing;
Fig. 4 is the structural drawing of main frame bottom bracket pilot hole.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail:
As shown in Figure 1, shown automatic air exchanging type balloon emanometer structure, having comprised: main frame, radon gas collecting chamber and A-frame, described main frame comprises radon gas sampling apparatus, gas circuit automatic switching control equipment and probe, wherein
Radon gas sampling apparatus, for collecting filtration to radon gas;
Gas circuit automatic switching control equipment, for bleeding to balloon or during balloon exhaust, the unimpeded switching between gas circuit, has realized gas flow loop reversible.
Above-mentioned radon gas sampling apparatus, gas circuit automatic switching control equipment and probe are arranged on main frame inside, use sheet metal to carry out electromagnetic screen.
As shown in Figure 2, shown gas circuit automatic switching control equipment, comprised three-way solenoid valve 1, reversible gas flow loop structure, three-way solenoid valve includes two, is arranged on respectively air intake opening and place, gas outlet, at air intake opening and place, gas outlet, is also separately installed with sampling head 2; Reversible gas flow loop structure implementation is: when bleeding, 1. two three-way solenoid valves are got to and located, and make gas circuit ABPEF unimpeded, under the effect of sampling pump P, to balloon 5, bleed; When exhaust, 2. two three-way solenoid valves are got to and are located, and make gas circuit FDPCA unimpeded, under the effect of sampling pump P to extraneous exhaust.In above-mentioned reversible gas flow loop, be provided with gas meter 4, in order to measurement gas flow.Said process, not changing bleed direction and take off balloon in the situation that of vacuum pump, has been realized gas flow loop reversible.
As shown in Figure 3, show automatic air exchanging type balloon emanometer system architecture, comprised data processing and control module, sampling pump insulating power supply module.Described data processing and control module comprise power circuit, data-carrier store, power supply supervisory circuit, liquid crystal display, by key control, serial communication, main amplifier and embedded microprocessor.Described sampling pump insulating power supply module comprises battery supply module and DC/DC isolation modular converter.In the middle of data processing and control module and sampling pump insulating power supply module, with sheet metal, carry out electromagnetic isolation.
As shown in Figure 4, shown the structure of main frame bottom bracket pilot hole, be divided into upper and lower two parts, bottom is one circular, has four positioning screw holes around; Top is bucking ladder structure, and bucking ladder inside is emptied as cylinder silk pore structure.During installation, upper and lower two pilot holes are aimed at, main frame is clipped in the middle, A-frame can be installed from bottom rotation, uses very convenient.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. an automatic air exchanging type balloon emanometer, comprising: main frame, radon gas collecting chamber and A-frame, it is characterized in that, and described main frame comprises radon gas sampling apparatus, gas circuit automatic switching control equipment and probe, wherein
Radon gas sampling apparatus, for collecting filtration to radon gas;
Gas circuit automatic switching control equipment, for bleeding to balloon or during balloon exhaust, the unimpeded switching between gas circuit, has realized gas flow loop reversible;
Above-mentioned radon gas sampling apparatus, gas circuit automatic switching control equipment and probe are arranged on main frame inside, use sheet metal to carry out electromagnetic screen;
Described radon gas sampling apparatus comprises sampling head, vacuum pump, flowmeter, and described sampling head is provided with filter, and filter is arranged on respectively air intake opening and place, gas outlet;
Described vacuum pump is direct current scraping blade pump;
Described flow is counted glass rotameter;
Described gas circuit automatic switching control equipment comprises three-way solenoid valve, reversible gas flow loop structure, and described three-way solenoid valve is arranged on described air intake opening and place, gas outlet;
Described main frame bottom is provided with rack positioning hole, by described rack positioning hole, main frame is arranged on described A-frame.
2. automatic air exchanging type balloon emanometer according to claim 1, is characterized in that, described probe comprises Au Si surface barrier detector and prime amplifier, and described silicon surface barrier detector is connected with prime amplifier, and insulation-encapsulated is integrated.
3. automatic air exchanging type balloon emanometer according to claim 1, it is characterized in that, described main frame comprises data processing and control module, sampling pump insulating power supply module, between data processing and control module and sampling pump insulating power supply module by sheet metal electromagnetic isolation; Described data processing and control module comprise power circuit, data-carrier store, power supply supervisory circuit, liquid crystal display, by key control, serial communication, main amplifier and embedded microprocessor; Described sampling pump insulating power supply module comprises battery supply module and DC/DC isolation modular converter.
4. automatic air exchanging type balloon emanometer according to claim 1, it is characterized in that, in described automatic air exchanging type balloon emanometer, be also provided with feedback compensation module, this feedback compensation module and by collecting temperature, humidity data in environment, measurement result proofreaied and correct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337441.1A CN102818906B (en) | 2012-09-13 | 2012-09-13 | Automatic ventilation type balloon emanometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337441.1A CN102818906B (en) | 2012-09-13 | 2012-09-13 | Automatic ventilation type balloon emanometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102818906A CN102818906A (en) | 2012-12-12 |
| CN102818906B true CN102818906B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210337441.1A Expired - Fee Related CN102818906B (en) | 2012-09-13 | 2012-09-13 | Automatic ventilation type balloon emanometer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102818906B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3374600B2 (en) * | 1995-06-28 | 2003-02-04 | 富士電機株式会社 | α-ray dust monitor |
| CN2833559Y (en) * | 2005-09-15 | 2006-11-01 | 核工业北京地质研究院 | Atmospheric radon and other gas sampling support |
| CN201522392U (en) * | 2009-07-01 | 2010-07-07 | 施宏 | Implementation device for sampling sealed gas |
| CN102253402A (en) * | 2011-05-26 | 2011-11-23 | 张阳 | Special charge sensitive amplifying circuit for gold silicon surface barrier semiconductor detector |
-
2012
- 2012-09-13 CN CN201210337441.1A patent/CN102818906B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3374600B2 (en) * | 1995-06-28 | 2003-02-04 | 富士電機株式会社 | α-ray dust monitor |
| CN2833559Y (en) * | 2005-09-15 | 2006-11-01 | 核工业北京地质研究院 | Atmospheric radon and other gas sampling support |
| CN201522392U (en) * | 2009-07-01 | 2010-07-07 | 施宏 | Implementation device for sampling sealed gas |
| CN102253402A (en) * | 2011-05-26 | 2011-11-23 | 张阳 | Special charge sensitive amplifying circuit for gold silicon surface barrier semiconductor detector |
Non-Patent Citations (3)
| Title |
|---|
| JP特许第3374600号B2 2002.11.29 |
| 毛有明.气球法测环境氡浓度.《辐射防护通讯》.2008,第28卷(第1期),第41-43页. |
| 气球法测环境氡浓度;毛有明;《辐射防护通讯》;20080229;第28卷(第1期);第41-43页 * |
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|---|---|
| CN102818906A (en) | 2012-12-12 |
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