CN102323384A - Standard gas preparation instrument - Google Patents
Standard gas preparation instrument Download PDFInfo
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- CN102323384A CN102323384A CN201110269968A CN201110269968A CN102323384A CN 102323384 A CN102323384 A CN 102323384A CN 201110269968 A CN201110269968 A CN 201110269968A CN 201110269968 A CN201110269968 A CN 201110269968A CN 102323384 A CN102323384 A CN 102323384A
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Abstract
The invention discloses a standard gas preparation instrument, comprising a setting unit, an MCU microprocessor unit, an MCU microprocessor unit, a carrier flow control unit, a peristaltic pump, and a standard gas generation unit. The standard gas preparation instrument is characterized in that: according to preset preparation parameters, the carrier flow is set, and according to reagent concentration, the rotating speed of the peristaltic pump motor is calculated, so that the reagent flow velocity meeting the preparation requirement is obtained; accordingly, the reagent input according to the reagent flow velocity is vaporized and then is mixed with the carrying gas input according to the set carrier flow, so that the standard gas with the preset concentration is obtained. The standard gas preparation instrument can prepare standard gases with different concentrations according to different demands, avoid the inconvenience caused by carrying standard gas cylinders, save labor and time, and increase the work efficiency.
Description
Technical field
The present invention relates to the gas analysis field, particularly a kind of gas preparation instrument.
Background technology
There is great demand in China to incineration treatment of garbage at present, and each metropolitan incineration treatment of garbage ratio of China is also steadily improving always.Yet it is exactly environmental protection problem that the waste incineration project relates to the national thing of being concerned about most, and a large amount of flue gases enter atmosphere, and the annual pollution number that air is caused is in ten thousand tons.This just need carry out process control to the waste incineration station, and gas analysis system is the key point of this process control.The key reference of this analytic system is exactly a calibrating gas, i.e. gas.Gas is a benchmark of weighing detected sample gas as the reference of analysis meter.In the prior art, gas leaves in the gas bottle of deciding concentration one by one usually.
Need to be equipped with multiple gas in the gas analysis system use at present instrument is carried out periodic calibration; Each demarcation all will be transported a plurality of gas bottles to on-the-spot, when especially polycomponent is measured, more will be equipped with a large amount of gases; Sometimes; Gas of the same race needs many bottles of gases of variable concentrations, and this just needs great amount of manpower and time to remove to carry a plurality of gas cylinders, has brought great inconvenience to the user.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of gas preparation instrument, specific embodiments is following: a kind of gas preparation instrument comprises:
Setup unit is used for setting the preparation parameter, and said preparation parameter comprises at least: carrier gas flux, reagent concentration, gas concentration, and the parameter of setting flowed to the MCU microprocessor unit;
The MCU microprocessor unit; Be used to receive the preparation parameter that setup unit is carried; And according to said preparation calculation of parameter peristaltic pump motor speed and reagent flow velocity, and said carrier gas flux flowed to the carrier gas flux control module, said peristaltic pump motor speed is flowed to said peristaltic pump;
The carrier gas flux control module is used for receiving said carrier gas flux from the MCU microprocessor unit, and according to the flow in the said carrier gas flux control carrier gas transport process, carrier gas is flowed to the gas generation unit;
Peristaltic pump is used to extract reagent, and turns round according to the peristaltic pump motor speed that obtains from said MCU microprocessor unit, and reagent is flowed to the gas generation unit according to the reagent flow velocity that said MCU microprocessor unit calculates;
The gas generation unit is used for generating gas according to the carrier gas that receives from the carrier gas flux control module with from the reagent that peristaltic pump obtains.
Preferably, said gas generation unit comprises: heating unit and vaporization hybrid chamber, and said heating unit is used for, and the temperature of said vaporization hybrid chamber is controlled at preset value, makes the reagent that obtains from peristaltic pump vaporize;
The vaporization hybrid chamber is used for the reagent after carrier gas that receives from the carrier gas flux control module and the vaporization is mixed.
Preferably, said setup unit is keyboard and/or touch-screen.
Preferably, when said setup unit is keyboard, also comprise: display screen is used to show the preparation parameter of said setting.
Preferably; Said gas preparation instrument also comprises: the electronic balance that links to each other with the MCU microprocessor; Said electronic balance is used to measure reagent quality; And the result of said measurement sent to said MCU microprocessor, said MCU microprocessor calculates the instant flow velocity of reagent according to said measurement result, and obtains the real-time concentration of gas according to said instant flow velocity.
The disclosed gas preparation instrument of the embodiment of the invention; According to predefined preparation parameter; Set carrier gas flux, and calculate the peristaltic pump motor speed obtaining meeting the reagent flow velocity that preparation requires, thereby make after the reagent vaporization according to the input of reagent flow velocity according to reagent concentration; Mix with the carrier gas of the carrier gas flux input of setting according to configuration parameter, can access the purpose of the gas of predefined gas concentration.Gas preparation instrument disclosed by the invention can configure the gas of variable concentrations according to different demands, and manpower and time have been saved in the inconvenience of having avoided carrying gas bottle to cause, have improved work efficiency.
Further, owing to adopt the mode of preparation in real time, the gas of having avoided making receives environmental impact in depositing process, and gas concentration changes, and the phenomenon that the calibrated error that causes is big takes place.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the disclosed a kind of gas preparation instrument of the embodiment of the invention;
Fig. 2 is the principle of work synoptic diagram of gas preparation instrument shown in Figure 1;
Fig. 3 is the structural representation of the disclosed another gas preparation instrument of the embodiment of the invention;
Fig. 4 is the principle of work synoptic diagram of gas preparation instrument shown in Figure 2.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention discloses a kind of gas preparation instrument, its structure is as shown in Figure 1, comprising: setup unit 11, MCU microprocessor 12, carrier gas flux controller 13, peristaltic pump 14 and gas generation unit 15, wherein:
Carrier gas flux controller 13 is used for, and receives said carrier gas flux from MCU microprocessor 12, and according to the flow in the said carrier gas flux control carrier gas transport process, carrier gas is flowed to gas generation unit 15.
The course of work synoptic diagram of the disclosed gas preparation instrument of present embodiment is as shown in Figure 2, comprising:
At first, set the preparation parameter, comprising: carrier gas flux, reagent concentration and gas concentration parameter at setup unit; The gas concentration parameter is the current concentration that needs the gas of preparation, and carrier gas flux does, the flow rate of the carrier gas of setting for the concentration of the gas of realizing current needs preparation; Reagent concentration is the concentration of carrying out the reagent of gas configuration; Reagent is generally water, organic reagent, inorganic reagent, for example, and hydrogen chloride Hcl, hydrogen fluoride HF, ammonia NH3, mercuric chloride Hgcl2 etc.The MCU microprocessor calculates the parameter of setting; Obtain reagent flow velocity and peristaltic pump motor speed; And said carrier gas flux flowed to carrier gas flux controller 13; Said peristaltic pump motor speed is flowed to said peristaltic pump 14, and carrier gas flux controller 13 is input to gas generation unit 15 according to the flow of the carrier gas flux control of setting from the carrier gas of carrier gas port entering with carrier gas; Peristaltic pump 14 turns round according to the motor speed that calculates; Make reagent to flow, thereby guarantee to enter into reagent in the gas generation unit 15 that the concentration of the gas of generation is the current concentration that prepare of needing with after the carrier gas that gets into according to carrier gas flux mixes according to the flow velocity that aforementioned calculation goes out.After reagent flows into gas generation unit 15, vaporize, fully mix with the carrier gas that enters into the gas generation unit simultaneously then, mixed other are exported from the gas outlet, are the gas for preparing at once.
Carrier gas and reagent get into the gas generation unit simultaneously in the present embodiment, make that reagent and the carrier gas after the vaporization can be fully, uniform mixing, reach the better mixing effect.
The disclosed gas preparation instrument of the embodiment of the invention; According to predefined preparation parameter; Set carrier gas flux, and calculate the peristaltic pump motor speed obtaining meeting the reagent flow velocity that preparation requires, thereby make after the reagent vaporization according to the input of reagent flow velocity according to reagent concentration; Mix with the carrier gas of the carrier gas flux input of setting according to configuration parameter, can access the purpose of the gas of predefined gas concentration.Gas preparation instrument disclosed by the invention can configure the gas of variable concentrations according to different demands, and manpower and time have been saved in the inconvenience of having avoided carrying gas bottle to cause, have improved work efficiency.
Further, owing to adopt the mode of preparation in real time, the gas of having avoided making receives environmental impact in depositing process, and gas concentration changes, and the phenomenon that the calibrated error that causes is big takes place.
Further; The structure of another gas preparation instrument disclosed by the invention is as shown in Figure 3, also comprises: the electronic balance 16 that links to each other with MCU microprocessor 12 each parts except that comprising shown in Fig. 1; Said electronic balance 16 is used to measure reagent quality; And the result of said measurement sent to said MCU microprocessor 12, the MCU microprocessor unit calculates the instant flow velocity of reagent according to said measurement result, and obtains the real-time concentration of gas according to said instant flow velocity.
Because the peristaltic pump tube coefficient A that participates in calculating in the said process is a big probable value and actual deviation is arranged, simultaneously; Because the peristaltic pump tube compressing degree is different, peristaltic pump tube coefficient A also can be slightly variant, so; Can cause between theoretical value and the actual value through the peristaltic pump motor speed that calculates and have deviation; Further, can cause actual reagent flow velocity and the actual flow velocity that calculates to have deviation, the concentration of the gas that finally causes preparing has error with the concentration of needs.The course of work synoptic diagram of the disclosed gas preparation instrument of present embodiment is as shown in Figure 4.
In the disclosed gas preparation instrument of present embodiment; Through utilizing high-precision electronic balance; Measure in real time the quality of reagent, the result of said measurement is sent to said MCU microprocessor, the difference of the quality that the MCU microprocessor is measured according to the electronic balance in the certain hour; Calculate actual reagent flow velocity, utilize the actual reagent flow velocity to calculate the real-time gas concentration of gas outlet again.With water is example, in real time actual flow velocity Vw1 (g/min)/(the actual flow V2 of 1244*Vw1+ carrier gas) of gas concentration C 1=1244* water.Further; Gas concentration in the preparation parameter of real-time gas concentration and setting is compared,, can send the order that reduces the peristaltic pump motor speed if real-time gas concentration is higher than the gas concentration of setting; Thereby reduce the reagent flow velocity; And then reduce real-time gas concentration, and make its gas concentration that equals to set, perhaps can preestablish real-time gas concentration and the allowed difference range of setting gas concentration; Be in this with the difference of setting gas concentration and can allow the real-time gas concentration in the difference range, can not influence normal use.
Real-time gas concentration in the present embodiment, parameters such as real-time reagent flow velocity can show through display in the foregoing description or touch-screen, so that better control.
The disclosed gas preparation instrument of present embodiment, the electronic balance through increasing obtains reagent quality in real time; And obtain the actual flow velocity of reagent thus, and then obtain real-time gas concentration, thus can realize detection to real-time gas concentration; And, can adjust the motor speed of peristaltic pump in real time according to testing result; Thereby realize the real-time gas concentration of adjustment, make it reach the purpose of request for utilization.Make the gas that makes have higher precision, can adapt to the applied scene that the gas precision is had higher requirements.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. a gas preparation instrument is characterized in that, comprising:
Setup unit is used for setting the preparation parameter, and said preparation parameter comprises at least: carrier gas flux, reagent concentration, gas concentration, and the parameter of setting flowed to the MCU microprocessor unit;
The MCU microprocessor unit; Be used to receive the preparation parameter that setup unit is carried; And according to said preparation calculation of parameter peristaltic pump motor speed and reagent flow velocity, and said carrier gas flux flowed to the carrier gas flux control module, said peristaltic pump motor speed is flowed to said peristaltic pump;
The carrier gas flux control module is used for receiving said carrier gas flux from the MCU microprocessor unit, and according to the flow in the said carrier gas flux control carrier gas transport process, carrier gas is flowed to the gas generation unit;
Peristaltic pump is used to extract reagent, and turns round according to the peristaltic pump motor speed that obtains from said MCU microprocessor unit, and reagent is flowed to the gas generation unit according to the reagent flow velocity that said MCU microprocessor unit calculates;
The gas generation unit is used for generating gas according to the carrier gas that receives from the carrier gas flux control module with from the reagent that peristaltic pump obtains.
2. gas preparation instrument according to claim 1; It is characterized in that said gas generation unit comprises: heating unit and vaporization hybrid chamber, said heating unit is used for; The temperature of said vaporization hybrid chamber is controlled at preset value, and the feasible reagent that obtains from peristaltic pump is vaporized;
The vaporization hybrid chamber is used for the reagent after carrier gas that receives from the carrier gas flux control module and the vaporization is mixed.
3. gas preparation instrument according to claim 1 is characterized in that, said setup unit is keyboard and/or touch-screen.
4. gas preparation instrument according to claim 3 is characterized in that, when said setup unit is keyboard, also comprises: display screen is used to show the preparation parameter of said setting.
5. gas preparation instrument according to claim 1; It is characterized in that; Said gas preparation instrument also comprises: with the electronic balance that the MCU microprocessor links to each other, said electronic balance is used to measure reagent quality, and the result of said measurement is sent to said MCU microprocessor; Said MCU microprocessor is according to the instant flow velocity of said measurement result calculating reagent, and the said instant flow velocity of foundation obtains the real-time concentration of gas.
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| CN201110269968A CN102323384A (en) | 2011-09-13 | 2011-09-13 | Standard gas preparation instrument |
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| CN201110269968A CN102323384A (en) | 2011-09-13 | 2011-09-13 | Standard gas preparation instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102749421A (en) * | 2012-07-16 | 2012-10-24 | 北京雪迪龙科技股份有限公司 | Mercury standard gas generating device |
| CN102749422A (en) * | 2012-07-16 | 2012-10-24 | 北京雪迪龙科技股份有限公司 | Mercury standard gas generating device |
| CN103728421A (en) * | 2014-01-07 | 2014-04-16 | 北京雪迪龙科技股份有限公司 | Element mercury standard gas preparation method and element mercury standard gas preparation system |
| CN105004676A (en) * | 2015-06-05 | 2015-10-28 | 福建省计量科学研究院 | Method for measuring concentration of mercury ions in smoke on basis of ultrasonic atomization method |
| CN105334299A (en) * | 2015-12-15 | 2016-02-17 | 北京雪迪龙科技股份有限公司 | Standard gas generation system and method for dynamically monitoring standard gas |
| CN105806681A (en) * | 2016-06-06 | 2016-07-27 | 北京雪迪龙科技股份有限公司 | Standard gas distribution control method and system and standard gas distribution instrument |
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| CN105334299A (en) * | 2015-12-15 | 2016-02-17 | 北京雪迪龙科技股份有限公司 | Standard gas generation system and method for dynamically monitoring standard gas |
| CN105806681A (en) * | 2016-06-06 | 2016-07-27 | 北京雪迪龙科技股份有限公司 | Standard gas distribution control method and system and standard gas distribution instrument |
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Application publication date: 20120118 |