CN105067764A - Improved measure apparatus for carbon dioxide purity of high purity gas and measure method thereof - Google Patents
Improved measure apparatus for carbon dioxide purity of high purity gas and measure method thereof Download PDFInfo
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- CN105067764A CN105067764A CN201510439720.2A CN201510439720A CN105067764A CN 105067764 A CN105067764 A CN 105067764A CN 201510439720 A CN201510439720 A CN 201510439720A CN 105067764 A CN105067764 A CN 105067764A
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Abstract
The invention relates to an improved measure apparatus for carbon dioxide purity of high purity gas, which is characterized in that a top plumb pipe is arranged at top of an absorption measuring chamber, a second plug valve is arranged on the top plumb pipe, and the measure apparatus for improving carbon dioxide purity of high purity gas is in an U shape. Compared with prior art, a method for detecting carbon dioxide purity of high purity gas by using the apparatus has the following advantages that: 1)in an operation process, the first plug valve is always positioned at central part, interruption operation is difficulty generated due to leakage; 2)operation is more convenient, and operation time can be saved; and 3)phenomenon that the top of bubbles can not completely cling to 100% graduation line due to tension of bubble surface can be eliminated, and the detection result can be more accurate.
Description
Technical field
The measurement of relate generally to gas purity of the present invention, is specifically related to measurement mechanism and the measuring method of high-pure gas carbon dioxide (purity >=99.9%) purity.
Background technology
Fig. 1 illustrates a kind of high-pure gas carbon dioxide purity analyzer, be made up of clear glass, there is intake chamber 10 and an absorptiometry room 20 that its top has a peristome 11, one first stopcock 30 a connecting pipe 50 bottom intake chamber 10 and between the sidepiece of absorptiometry room 20 1 is equipped with, there is a sidepiece horizontal tube 60 the other side, absorptiometry room 20, lateral pipe 60 is equipped with one second stopcock 40, whole measurement mechanism becomes " L " shape, is called L shape high-pure gas carbon dioxide purity analyzer.
The step detecting high-pure gas carbon dioxide purity with L shape high-pure gas carbon dioxide purity analyzer is as follows:
(1) draw a rubber tube from the production scene sampling spot producing high-pure gas carbon dioxide plant, regulate sampling operation valve, make high-pure gas carbon dioxide sample airshed moderate, stable;
(2) the second stopcock 40 and the first stopcock 30 of L shape high-pure gas carbon dioxide purity analyzer is opened, rubber tube is connected with lateral pipe 60, sample gas is allowed fully to replace air in L shape high-pure gas carbon dioxide purity analyzer, displacement gas should be greater than 10 times of replaced volume, the air displaced enters air through peristome 11, 5 minutes used times of displacement, then the first stopcock 30 is first closed, close the second stopcock 40 again, high-pure gas carbon dioxide is enclosed in the first stopcock 30 and the second stopcock 40 in the space S closed, take off proofed sleeve, the cock of rapid rotation first stopcock 30 for several times, space S moment is communicated with intake chamber 10, because intake chamber 10 is communicated with air, thus the pressure in space S and atmospheric pressure are balanced each other, guarantee the consistance of the high-pure gas carbon dioxide volume sampled,
(3) concentration injected in intake chamber 10 slightly larger than space S volume is the potassium hydroxide solution of 300g/L, slowly open the first stopcock 30, make in potassium hydroxide solution inflow space S, when potassium hydroxide solution no longer flows into 20, illustrate atmospheric carbon dioxide in high-pure gas carbon dioxide with the potassium hydroxide complete reaction in potassium hydroxide solution, generate sal tartari and water, close the first stopcock 30, before top, absorptiometry room 20, the survey measurements scale mark 21 of rear sphere reads the diameter of the bubble formed by the foreign gas in high-pure gas carbon dioxide, contrast " purity-bubble diameter table of comparisons ", draw the purity of institute's test sample product high-pure gas carbon dioxide.
L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 1, because adopting forward and backward sphere scale mark 21 reading, the survey measurements scale mark 21 of visual inspection bubble two edges and forward and backward sphere is tangent, reading error can be caused relatively large, make high-pure gas carbon dioxide purity testing result inaccurate.
Fig. 2 illustrates another kind of L shape high-pure gas carbon dioxide purity analyzer, this L shape high-pure gas carbon dioxide purity analyzer is substantially identical with the structure of the L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 1, difference is, the forward and backward sphere at the top, absorptiometry room 20 of this L shape high-pure gas carbon dioxide purity analyzer does not have survey measurements scale mark 21, on the outer wall of its survey measurements scale mark 71 one section of pipe of the lateral pipe 70 of contiguous second stopcock 40 within the scope of space S.The internal diameter of this section of pipe is different, and the internal diameter being close to the pipe of the second stopcock 40 is the half of the internal diameter of pipe away from the second stopcock 40, and the survey measurements scale mark 71 on the pipe outer wall of little internal diameter is amplified accordingly.
The step detecting high-pure gas carbon dioxide purity with the L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 2 is as follows:
(1) draw a rubber tube from the production scene sampling spot producing high-pure gas carbon dioxide plant, regulate sampling operation valve, make high-pure gas carbon dioxide sample airshed moderate, stable;
(2) the second stopcock 40 and the first stopcock 30 of L shape high-pure gas carbon dioxide purity analyzer is opened, rubber tube is connected with lateral pipe 70, sample gas is allowed fully to replace air in L shape high-pure gas carbon dioxide purity analyzer, displacement gas should be greater than 10 times of replaced volume, the air displaced enters air through peristome 11, 5 minutes used times of displacement, then the first stopcock 30 is first closed, close the second stopcock 40 again, high-pure gas carbon dioxide is enclosed in the first stopcock 30 and the second stopcock 40 in the space S closed, take off proofed sleeve, the cock of rapid rotation first stopcock 30 for several times, space S moment is communicated with intake chamber 10, because intake chamber 10 is communicated with air, thus the pressure in space S and atmospheric pressure are balanced each other, guarantee the consistance of the high-pure gas carbon dioxide volume sampled,
(3) concentration injected in intake chamber 10 slightly larger than space S volume is the potassium hydroxide solution of 300g/L, slowly open the first stopcock 30, make in potassium hydroxide solution inflow space S, when potassium hydroxide solution no longer flows into 20, illustrate atmospheric carbon dioxide in high-pure gas carbon dioxide with the potassium hydroxide complete reaction in potassium hydroxide solution, generate sal tartari and water, close the first stopcock 30, residual hydrogen potassium oxide solution in intake chamber 10 is poured out, turn clockwise L shape high-pure gas carbon dioxide purity analyzer 90 ° of angles, absorptiometry room 20 lateral pipe 70 is made to become vertical from level, bubble in absorptiometry room 20 in potassium hydroxide solution is subject to buoyancy and rises in the pipeline section of the lateral pipe 70 of the survey measurements scale mark 71 indicated, when bubble rises to this pipeline section top, the scale of the survey measurements scale mark 71 that bubble incision face is corresponding is purity determination reading.
L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 2, need the 90 ° of angles that turn clockwise in operation, enter in the pipeline section of the lateral pipe 70 of the survey measurements scale mark 71 indicated to make bubble, rise to this pipeline section top, now, because the first stopcock 30 is in lowermost end, the Action of Gravity Field of solution is in the first stopcock 30, first stopcock 30 easily leaks in operation, cause operation disruption, the more important thing is, because bubble face exists tension force effect, the bubble accumulating in intake chamber 10 inner top of the L shape high-pure gas carbon dioxide purity analyzer being originally in horizontality to be become from level at the absorptiometry room 20 lateral pipe 70 of L shape high-pure gas carbon dioxide purity analyzer to be not easy in the pipeline section of the lateral pipe 70 transferring to the survey measurements scale mark 71 indicated the process of vertical, operate very difficult.
Summary of the invention
The present invention will provide a kind of measurement mechanism and measuring method of high-pure gas carbon dioxide purity of improvement.
The measurement mechanism of high-pure gas carbon dioxide purity of the present invention, be made up of clear glass, there is intake chamber and an absorptiometry room that its top has a peristome, a connecting pipe bottom this intake chamber and between this absorptiometry room one sidepiece is equipped with one first stopcock, it is characterized in that, there is at the top of this absorptiometry room a top vertical pipe, this top vertical pipe is equipped with one second stopcock, space S is limited with between this first stopcock and this second stopcock, within the scope of this space S one section of pipe of this top vertical pipe of this second stopcock contiguous outer wall on there is survey measurements scale mark, the measurement mechanism of this high-pure gas carbon dioxide purity is U-shaped.
Utilize the measurement mechanism of high-pure gas carbon dioxide purity of the present invention to detect the method for high-pure gas carbon dioxide purity, there is following order step:
(1) draw a rubber tube from the production scene sampling spot producing high-pure gas carbon dioxide plant, regulate sampling operation valve, make high-pure gas carbon dioxide sample airshed moderate, stable;
(2) this first stopcock and this second stopcock of the measurement mechanism of this high-pure gas carbon dioxide purity is opened, this rubber tube is connected with this top vertical pipe, sample gas is allowed fully to replace air in the measurement mechanism of this high-pure gas carbon dioxide purity, the air displaced enters air through this peristome, then this first stopcock is first closed, close this second stopcock again, high-pure gas carbon dioxide is enclosed in this first stopcock and this second stopcock in the space S closed, take off proofed sleeve, the cock of this first stopcock of rapid rotation for several times, this space S moment is communicated with this intake chamber, close this first stopcock,
(3) concentration injected in this intake chamber slightly larger than this space S volume is the potassium hydroxide solution of 300g/L, slowly open this first stopcock, potassium hydroxide solution is made to flow in this space S, when potassium hydroxide solution no longer flows in this space S, close this first stopcock, read this high-pure gas carbon dioxide purity survey measurements by the scale of this survey measurements scale mark.
Utilize the measurement mechanism of high-pure gas carbon dioxide purity of the present invention to detect the method for high-pure gas carbon dioxide purity compared with prior art, tool has the following advantages:
(1) in operation, the first stopcock is in medium position all the time, can not reveal and interrupt operation because producing;
(2) more convenient to operate, save the running time;
(3) eliminate because the effect of bubble surface tension makes bubble roof can not be close to the phenomenon of 100% scale mark completely, make testing result more accurate.
Accompanying drawing explanation
Fig. 1 is the elevational schematic of existing a kind of L shape high-pure gas carbon dioxide purity analyzer;
Fig. 2 is the elevational schematic of existing another kind of L shape high-pure gas carbon dioxide purity analyzer;
Fig. 3 is the elevational schematic of the measurement mechanism of high-pure gas carbon dioxide purity of the present invention.
Embodiment
Be described in detail the measurement mechanism of high-pure gas carbon dioxide purity of the present invention and the embodiment of measuring method with reference to the accompanying drawings, the measurement mechanism of high-pure gas carbon dioxide purity of the present invention and the feature and advantage of measuring method will become more obvious.
See Fig. 3, the structure of the measurement mechanism of high-pure gas carbon dioxide purity of the present invention is identical with the structure major part of the L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 2, these identical structure part no longer repeated descriptions.
The part that the structure of the measurement mechanism of high-pure gas carbon dioxide purity of the present invention is not identical with the structure of the L shape high-pure gas carbon dioxide purity analyzer shown in Fig. 2 is, the other side of the absorptiometry room 20 of the measurement mechanism of high-pure gas carbon dioxide purity of the present invention does not have lateral pipe 70, but there is at the top of absorptiometry room 20 a top vertical pipe 80, the structure of top vertical pipe 80 is identical with the structure of lateral pipe 70, and the measurement mechanism of high-pure gas carbon dioxide purity of the present invention is U-shaped.
The step detecting high-pure gas carbon dioxide purity with the measurement mechanism of the U-shaped high-pure gas carbon dioxide purity shown in Fig. 3 is as follows:
(1) draw a rubber tube from the production scene sampling spot producing high-pure gas carbon dioxide plant, regulate sampling operation valve, make high-pure gas carbon dioxide sample airshed moderate, stable;
(2) the second stopcock 40 and the first stopcock 30 of the measurement mechanism of U-shaped high-pure gas carbon dioxide purity is opened, rubber tube is connected with top vertical pipe 80, sample gas is allowed fully to replace air in the measurement mechanism of U-shaped high-pure gas carbon dioxide purity, displacement gas should be greater than 10 times of replaced volume, the air displaced enters air through peristome 11, 5 minutes used times of displacement, then the first stopcock 30 is first closed, close the second stopcock 40 again, high-pure gas carbon dioxide is enclosed in the first stopcock 30 and the second stopcock 40 in the space S closed, take off proofed sleeve, the cock of rapid rotation first stopcock 30 for several times, space S moment is communicated with intake chamber 10, because intake chamber 10 is communicated with air, thus the pressure in space S and atmospheric pressure are balanced each other, guarantee the consistance of the high-pure gas carbon dioxide volume sampled,
(3) concentration injected in intake chamber 10 slightly larger than space S volume is the potassium hydroxide solution of 300g/L, slowly open the first stopcock 30, make in potassium hydroxide solution inflow space S, when potassium hydroxide solution no longer flows into 20, illustrate atmospheric carbon dioxide in high-pure gas carbon dioxide with the potassium hydroxide complete reaction in potassium hydroxide solution, generate sal tartari and water, close the first stopcock 30, bubble now in absorptiometry room 20 has directly been contracted in the pipeline section of top vertical pipe 80 of the survey measurements scale mark 71 indicated, when bubble is contracted to this pipeline section top, the scale of the survey measurements scale mark 71 that bubble incision face is corresponding is purity determination reading.
Describing the present invention property and nonrestrictive description according to the embodiment of the present invention, but should be understood that when not departing from relevant scope defined by the claims, those skilled in the art can make and changing and/or amendment.
Claims (2)
1. the measurement mechanism of a high-pure gas carbon dioxide purity, be made up of clear glass, there is intake chamber and an absorptiometry room that its top has a peristome, a connecting pipe bottom this intake chamber and between this absorptiometry room one sidepiece is equipped with one first stopcock, it is characterized in that, there is at the top of this absorptiometry room a top vertical pipe, this top vertical pipe is equipped with one second stopcock, space S is limited with between this first stopcock and this second stopcock, within the scope of this space S one section of pipe of this top vertical pipe of this second stopcock contiguous outer wall on there is survey measurements scale mark, the measurement mechanism of this high-pure gas carbon dioxide purity is U-shaped.
2. utilize the measurement mechanism of the high-pure gas carbon dioxide purity described in claim 1 to detect the method for high-pure gas carbon dioxide purity, there is following order step:
(1) draw a rubber tube from the production scene sampling spot producing high-pure gas carbon dioxide plant, regulate sampling operation valve, make high-pure gas carbon dioxide sample airshed moderate, stable;
(2) this first stopcock and this second stopcock of the measurement mechanism of this high-pure gas carbon dioxide purity is opened, this rubber tube is connected with this top vertical pipe, sample gas is allowed fully to replace air in the measurement mechanism of this high-pure gas carbon dioxide purity, the air displaced enters air through this peristome, then this first stopcock is first closed, close this second stopcock again, high-pure gas carbon dioxide is enclosed in this first stopcock and this second stopcock in the space S closed, take off proofed sleeve, the cock of this first stopcock of rapid rotation for several times, this space S moment is communicated with this intake chamber, close this first stopcock,
(3) concentration injected in this intake chamber slightly larger than this space S volume is the potassium hydroxide solution of 300g/L, slowly open this first stopcock, potassium hydroxide solution is made to flow in this space S, when potassium hydroxide solution no longer flows in this space S, close this first stopcock, read this high-pure gas carbon dioxide purity survey measurements by the scale of this survey measurements scale mark.
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Citations (5)
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| JPH1062406A (en) * | 1996-08-20 | 1998-03-06 | Kyoto Electron Mfg Co Ltd | Method and apparatus for measuring volume of residual gas |
| CN2653492Y (en) * | 2003-10-29 | 2004-11-03 | 苑振新 | Detector for CO2 binding force |
| CN202330210U (en) * | 2011-11-30 | 2012-07-11 | 神华集团有限责任公司 | Gas testing device |
| CN104198327A (en) * | 2014-08-28 | 2014-12-10 | 中蓝连海设计研究院 | Device and method for determining content of carbon dioxide in ferrous disulfide |
| CN204807535U (en) * | 2015-07-24 | 2015-11-25 | 惠州凯美特气体有限公司 | Measurement device for gaseous carbon dioxide purity of modified high -purity |
-
2015
- 2015-07-24 CN CN201510439720.2A patent/CN105067764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062406A (en) * | 1996-08-20 | 1998-03-06 | Kyoto Electron Mfg Co Ltd | Method and apparatus for measuring volume of residual gas |
| CN2653492Y (en) * | 2003-10-29 | 2004-11-03 | 苑振新 | Detector for CO2 binding force |
| CN202330210U (en) * | 2011-11-30 | 2012-07-11 | 神华集团有限责任公司 | Gas testing device |
| CN104198327A (en) * | 2014-08-28 | 2014-12-10 | 中蓝连海设计研究院 | Device and method for determining content of carbon dioxide in ferrous disulfide |
| CN204807535U (en) * | 2015-07-24 | 2015-11-25 | 惠州凯美特气体有限公司 | Measurement device for gaseous carbon dioxide purity of modified high -purity |
Non-Patent Citations (2)
| Title |
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| 中华人民共和国国家质量监督检验检疫总局，中国国家标准化管理委员会: "《中华人民共和国国家标准GB 10621-2006》", 1 March 2006 * |
| 任友直 等: "《涂料工业用原材料技术标准手册》", 30 April 1992 * |
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