CN201110816Y - Semiautomatic experiment distribution apparatus used for optical monitoring contaminant in the air - Google Patents
Semiautomatic experiment distribution apparatus used for optical monitoring contaminant in the air Download PDFInfo
- Publication number
- CN201110816Y CN201110816Y CNU2007200617628U CN200720061762U CN201110816Y CN 201110816 Y CN201110816 Y CN 201110816Y CN U2007200617628 U CNU2007200617628 U CN U2007200617628U CN 200720061762 U CN200720061762 U CN 200720061762U CN 201110816 Y CN201110816 Y CN 201110816Y
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- valve
- buffer chamber
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a semi-automatic laboratory gas distribution device for optically monitoring pollutant in air, which comprises a gas storage tank of standard gas, a gas cell and a pure N2 gas storage tank. A gas buffer chamber is arranged between the gas storage tank of standard gas and the gas cell, one end of the gas buffer chamber is connected with the gas storage tank of standard gas, the other end is connected with the gas chamber through an gas inlet valve of standard gas, the gas cell is provided with an N2 gas inlet valve, and the N2 gas inlet valve is connected with the pure N2 gas storage tank. The gas cell is further provided with a gas outlet valve which is connected with a vacuum pump. One end of the gas inlet valve of standard gas is connected with a mass flow-meter, and the mass flow-meter is connected with the gas buffer chamber through a valve, the mass flow-meter is further connected with a control instrument of the mass flow-meter, and the inner portion of the gas cell is provided with an agitator. The semi-automatic laboratory gas distribution device can eliminate errors brought by secondary gas distribution, and can rapidly and accurately obtain gas with required concentration in research process, and the device is simple and convenient in operation and perfect in stability when being directly used in experiments.
Description
Technical field
The utility model relates to a kind of air distributing device, relates in particular to the semi-automatic low concentration air distributing device in the experiment of optical monitoring gas pollutant.
Background technology
In existing gas distributing system, generally be to take by flowmeter and solenoid control institute distribution body and blanketing gas N
2Volume ratio, allow two kinds of gases feed in the gas-holder, fully mix, reinstall in the steel cylinder, thereby configure certain density desired gas.In actual Experiments of Optics, the availability of the calibrating gas of being joined is little, and its reason is, in the Experiments of Optics, generally standard gas will be fed in the gas pond of a square or cylindricality, passes through gas to make things convenient for light path, thereby realizes the requirement of Experiments of Optics.And the standard gas of original method configuration problems can occur when being used to test, as: " dead angle effect " in gas pond; Constantly original interference gas in the ventilation emptying gas pond can be wasted a large amount of standard gas; The secondary distribution brings the inaccuracy of concentration; Can't realize disposing the demand of multiple concentration with a kind of high concentration gas.
To sum up, also there is not a kind of demand that can satisfy the experiment of ordinary optical monitoring dusty gas class in the existing air distributing device.
The utility model content
The purpose of this utility model is to overcome the above-mentioned defective that goes up the prior art existence, a kind of semi-automatic experiment air distributing device that is used for optical monitoring air pollutant is provided, it can be according to the gas with various and the concentration of required research, easy, configure required standard gas fast, accurately, thereby realize the accuracy and the convenience of optical monitoring experiment.
To achieve these goals, the incidence of criminal offenses of the utility model technology is: be used for the semi-automatic experiment air distributing device of optical monitoring air pollutant, comprise calibrating gas gas-holder 1, gas pond 12, pure N
2Gas-holder 11 is provided with gas buffer chamber 2 between described calibrating gas gas-holder 1 and the gas pond 12, and gas buffer chamber 2 one ends are connected with calibrating gas gas-holder 1, the other end be connected with gas pond 12 by standard gas air intake valve 8, gas pond 12 is provided with N
2 Gas admittance valve 10, N
2 Gas admittance valve 10 and pure N
2Gas-holder 11 connects; Also be provided with gas outlet valve 4 on the gas pond 12, gas outlet valve 4 is connected with vacuum pump 13.
In the above-mentioned semi-automatic experiment air distributing device, an end of described air intake valve 8 is connected with mass flowmeter 7, and mass flowmeter 7 is connected with gas buffer chamber 2 by valve, and mass flowmeter 7 also is connected with mass flowmeter controller 6.
In the above-mentioned semi-automatic experiment air distributing device, also be provided with gas outlet tensimeter 5 between gas outlet valve 4 and the vacuum pump 13.
In the above-mentioned semi-automatic experiment air distributing device, also be provided with gas circuit tensimeter 3 between gas buffer chamber 2 and the mass flowmeter 7.
In the above-mentioned semi-automatic experiment air distributing device, 12 inside, gas pond are provided with a stirrer 9, and the material of stirrer 9 adopts teflon system.
In the above-mentioned semi-automatic experiment air distributing device, gas pond 12 by cylindrical shell with constitute with the sealed at both ends quartz glass plate that is connected of cylindrical shell respectively, the material of cylindrical shell is a glass; End in the described cylindrical shell two ends adopts cushion pad and screw that quartz glass plate and cylindrical shell are tightly connected, for removably connecting.The thickness of quartz glass plate and glass and intensity are enough to bear the negative pressure of certain intensity.
By the utilization of above technology, the utility model compared with prior art has certain advantage: at first utilize to vacuumize repeatedly and N
2The method of getting rid of interference gas, the interference of other gases of avoiding and " dead angle effect "; In the distribution process, directly the gas with required configuration feeds in the gas pond that makes, rather than pour in the gas tank, directly can next step experiment, this instant air distributing device has been got rid of the error that the secondary distribution brings, can obtain the gas of desired concn in the research process fast and accurately, thereby be directly used in the experiment, and easy and simple to handle, and system stability is also fine.
Description of drawings
Fig. 1 is the total structural representation of the utility model device.
Wherein, 1, calibrating gas gas-holder; 2, gas buffer chamber; 3, gas circuit tensimeter; 4, gas outlet valve; 5, gas outlet tensimeter; 6, mass flowmeter controller; 7, mass flowmeter; 8, standard gas air intake valve; 9, stirrer; 10, N
2Gas admittance valve; 11, pure N
2Gas-holder; 12, gas pond; 13 vacuum pumps.
Embodiment
The utility model device is used in particular for disposing with calibrating gas the gas of various concentration, is specially adapted in the experimental study work of pollutant in the optical monitoring atmosphere.
Referring to accompanying drawing 1, be a kind of semi-automatic experiment air distributing device, comprise gas circuit tensimeter 3, gas outlet tensimeter 5, calibrating gas gas-holder 1, pure N2 gas-holder 11, mass flowmeter 7, gas outlet valve 4, standard gas air intake valve 8, N2 gas admittance valve 10, gas buffer chamber 2, stirrer 9 gentle ponds 12.Described calibrating gas gas-holder 1 is connected with gas buffer chamber 2, one end of described mass flowmeter 7 is connected with gas buffer chamber 2, the other end is connected with the standard gas air intake valve in gas pond 12, mass flowmeter 7 also is connected with mass flowmeter controller 6, and it flows into the gas flow in gas pond 12 by 6 controls of mass flowmeter controller.Described pure N2 gas-holder 11 is connected with the N2 gas admittance valve, and described gas outlet tensimeter 5 is connected with gas outlet valve 4, is used for measuring the pressure in the gas pond; Also be provided with gas outlet tensimeter 5 between gas outlet valve 4 and the vacuum pump 13.12 inside, gas pond are provided with a stirrer 9, and the material of stirrer 9 adopts teflon system.
The above-mentioned gas buffer chamber 2 that is provided with between standard gas and flowmeter is used to prevent the influence of pressure and temperature to flow.
Described gas pond 12 is through particular design, the gas pond be to adopt high strength glass and piezoid to make, cylindrical shell is a glass, two ends are quartz glass, are in order to test seeing through of medium ultraviolet light like this; One end piezoid itself is dismountable with cylindrical shell glass, make cushion pad with cylindrical shell with rubber ring around the piezoid, fix with screw again, purpose is in the process of some organic pollutants of configuration, above can being adsorbed on behind the Long contact time glass, dismountable purpose is for regular cleaning gas pond.
The diffusion of gas is that the rotation and freely the spreading of gas of the stirrer by teflon system realized in the distribution process, can directly carry out next step experiment after having joined gas, thus the accuracy of assurance gas concentration.
In whole air distributing device, close valves all except that the valve of gas outlet, start vacuum machine 13, be not less than-negative pressure of 0.5MPa takes out other interference gas in the pond of degassing; Close gas outlet valve 4, open N2 gas admittance valve 10, pour pure N2 extremely near a standard atmospheric pressure; Above-mentioned steps can be thought and not have other gases except that N2 in the gas pond several times repeatedly.Open air valve, make standard gas feed earlier Buffer Pool, observe gas circuit tensimeter 3, make to depress by mass flowmeter 7 in the gas pond, to feed gas at a normal atmosphere, control the gas flow that flows in the gas pond by control of quality flowmeter controller 6, to prepare the gas that we are wanted concentration.Under the situation that flow is determined in guarantee flowing into the gas pond, close standard gas air intake valve 8, observe gas outlet tensimeter 5, this moment, its displayed value should also not reach a standard atmospheric pressure, fed a certain amount of N2 again and made that pressure reaches an atmospheric pressure in the gas pond.Turn on agitator 9 makes that N2 and standard gas are fully mixed, after several minutes, closes stirrer, and the gas that the gas pond is 12 li is the gas that we test required research.
Claims (6)
1, the semi-automatic experiment air distributing device that is used for optical monitoring air pollutant, comprise calibrating gas gas-holder (1), gas pond (12), pure N2 gas-holder (11), it is characterized in that: be provided with gas buffer chamber (2) between calibrating gas gas-holder (1) and gas pond (12), gas buffer chamber (2) one ends are connected with calibrating gas gas-holder (1), the other end be connected with gas pond (12) by standard gas air intake valve (8), gas pond (12) is provided with N2 gas admittance valve (10), and N2 gas admittance valve (10) is connected with pure N2 gas-holder (11); Also be provided with gas outlet valve (4) on the gas pond (12), gas outlet valve (4) is connected with vacuum pump (13).
2, semi-automatic experiment air distributing device according to claim 1, it is characterized in that: an end of described standard gas air intake valve (8) is connected with mass flowmeter (7), mass flowmeter (7) is connected with gas buffer chamber (2) by valve, and mass flowmeter (7) also is connected with mass flowmeter controller (6).
3, semi-automatic experiment air distributing device according to claim 2 is characterized in that: also be provided with gas outlet tensimeter (5) between gas outlet valve (4) and the vacuum pump (13).
4, semi-automatic experiment air distributing device according to claim 3 is characterized in that: also be provided with gas circuit tensimeter (3) between gas buffer chamber (2) and the mass flowmeter (7).
5 semi-automatic experiment air distributing devices according to claim 4 is characterized in that: inside, gas pond (12) is provided with a stirrer (9).
6, semi-automatic experiment air distributing device according to claim 5 is characterized in that: gas pond (12) by cylindrical shell with constitute with the sealed at both ends quartz glass plate that is connected of cylindrical shell respectively, the material of cylindrical shell is a glass; End in the described cylindrical shell two ends adopts cushion pad and screw that quartz glass plate and cylindrical shell are tightly connected, for removably connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200617628U CN201110816Y (en) | 2007-12-18 | 2007-12-18 | Semiautomatic experiment distribution apparatus used for optical monitoring contaminant in the air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200617628U CN201110816Y (en) | 2007-12-18 | 2007-12-18 | Semiautomatic experiment distribution apparatus used for optical monitoring contaminant in the air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110816Y true CN201110816Y (en) | 2008-09-03 |
Family
ID=39895351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200617628U Expired - Fee Related CN201110816Y (en) | 2007-12-18 | 2007-12-18 | Semiautomatic experiment distribution apparatus used for optical monitoring contaminant in the air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110816Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575653A (en) * | 2012-08-09 | 2014-02-12 | 泰肯贸易股份公司 | Microplate reader with lid lifter for microplates |
| CN107402194A (en) * | 2017-08-09 | 2017-11-28 | 山东大学 | A kind of generation device and production method of high-speed pulse source of the gas |
-
2007
- 2007-12-18 CN CNU2007200617628U patent/CN201110816Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575653A (en) * | 2012-08-09 | 2014-02-12 | 泰肯贸易股份公司 | Microplate reader with lid lifter for microplates |
| CN107402194A (en) * | 2017-08-09 | 2017-11-28 | 山东大学 | A kind of generation device and production method of high-speed pulse source of the gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20101218 |