CN103852351B - A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method - Google Patents
A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method Download PDFInfo
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- CN103852351B CN103852351B CN201410112473.0A CN201410112473A CN103852351B CN 103852351 B CN103852351 B CN 103852351B CN 201410112473 A CN201410112473 A CN 201410112473A CN 103852351 B CN103852351 B CN 103852351B
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- gas piping
- valve
- drainpipe
- injection pipe
- water injection
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Abstract
The present invention relates to a kind of sampler and sampling method of extracting gases sample in negative-pressure pipeline, the sampling procedure that before can being widely used in iron and steel, coking, chemical industry blower fan, coal gas is checked.Below the liquid level in absorbing liquid bottle is inserted in external one first gas piping on gas piping and one end of the first gas piping, water injection pipe and draft tube is provided with at the top of sealing radiator, one second gas piping one end self-absorption liquid bottle Base top contact is also connected in draft tube, drainpipe is provided with in the bottom of described sealing radiator, and in the first gas piping, the second gas piping, water injection pipe and drainpipe, setting is respectively arranged with valve, is placed on immediately below described drainpipe with graduated described graduated cylinder.And a kind of sampling method described based on this device.The present invention opens new approach to coal gas sampling below atmospheric pressure mode, effectively prevent sample volume metering inaccurate, and avoids being mixed into of air.Ensure the accuracy of coal gas sampling below atmospheric pressure.
Description
Technical field
The invention provides a kind ofly be widely used in iron and steel, gas sampling point that coking, chemical industry gas piping pressure are less than or equal to atmospheric pressure.
Background technology
At coking industry, need to sample the coal gas sample in gas piping, to detect hydrogen sulfide content in coal gas, its sampling spot is generally positioned at the position before fan blower, and the gas piping pressure before fan blower is generally negative pressure (about negative 5KPa), the sampling of present stage major part use negative pressure pump.Coal gas is extracted out by rotating by negative pressure pump, and needs to coordinate gas meter to calculate the volume of the coal gas extracted out.
In actual use, because Portable negative-pressure sampling pump pressure is less, draft is also little, make the sample flow that extracts unstable, cause objectively gas meter always cannot accurate counting, directly affects the assay of hydrogen sulfide content in coal gas, data deviation is large, does not meet and produces reality.
Therefore needing to make improvements, make it possible to accurate-metering gas sampling volume, the content of coal gas sulfuretted hydrogen before blower fan can be checked accurately, providing accurate data for producing.
Summary of the invention
For above-mentioned situation, the present invention's invention aims to provide a kind of sampler of extracting gases sample in negative-pressure pipeline, it can be less than or equal to the gas sampling point Measurement accuracy sample volume of atmospheric pressure at gas piping pressure, and make simple and easy, easy to operate, eliminate negative pressure pump, operating cost is low, is worth universal and promotes.
For achieving the above object, the method for the invention is solved by following technical scheme:
A kind of sampler of extracting gases sample in negative-pressure pipeline, comprise gas piping, gas piping, absorbing liquid bottle, sealing radiator, graduated cylinder and valve, it is characterized in that, below the liquid level in absorbing liquid bottle is inserted in external one first gas piping on described gas piping and one end of the first gas piping, water injection pipe and draft tube is provided with at the top of described sealing radiator, one second gas piping one end self-absorption liquid bottle Base top contact is also connected in described draft tube, drainpipe is provided with in the bottom of described sealing radiator, and at the first gas piping, second gas piping, valve is respectively arranged with in water injection pipe and drainpipe, be placed on immediately below described drainpipe with graduated described graduated cylinder.
Described water injection pipe connects water supply pipe, and is provided with a retaining valve that only can outwards be vented at the top of described seal case.
In negative-pressure pipeline, a sampling method for extracting gases sample, is characterized in that, comprises the steps:
First, close the valve on first, second gas piping, make the valve at drainpipe place be in closed condition simultaneously, in sealing radiator, fill water by water injection pipe;
Then, close the valve on water injection pipe, open first simultaneously, valve in draft tube and the valve opened on drainpipe, close the valve on drainpipe when the liquid in sealing radiator stops dirty.
Complete primary sample, by analyzing, measuring the content that accurately can draw the test substance contained in coal gas.
Negative-pressure gas sampler provided by the invention be specially adapted to gas in pipelines pressure be less than atmospheric pressure gas piping, the core technology of this device adopts drainage principle, gas volume is effectively measured, avoids sampling error.Sample more accurate than the mode of traditional use negative pressure pump sample drawn, and cost is lower, this antifouling type water seal is adapted to the multiple water-fast gases such as coal gas, has good economic benefit and social benefit.
Accompanying drawing explanation
Accompanying drawing 1 sampler process chart.
Accompanying drawing 2 sampler fills the constitutional diagram after water.
Constitutional diagram after the draining of accompanying drawing 3 sampler.
Embodiment
As shown in Figures 1 to 3,
A sampler for extracting gases sample in negative-pressure pipeline, comprises gas piping 1, gas piping, absorbing liquid bottle 2, sealing radiator 3, graduated cylinder 4 and valve K.
Absorbing liquid bottle 2 is a chemical reaction bottle, bottle cap is the glass stopper with air intake opening and gas outlet, the air intake opening of absorbing liquid bottle connects the first gas piping, the inlet end of absorbing liquid bottle is positioned at the bottom of liquid bottle, being equipped with in absorbing liquid bottle 2 can the liquid of adsorption of hydrogen sulfide gas, the other end of the first gas piping is connected to the coal gas acquisition port of gas piping, and a kind of concrete form is, the first gas piping is emulsion tube.The outlet of absorbing liquid bottle connects the second gas piping, and the air entry of the second gas piping is arranged in more than the liquid level of absorbing liquid bottle.
Sealing radiator 3 is the complete airtight casing using stainless steel to make, and shape is made by oneself.Have a water injection pipe 31 and a draft tube 32 in the welded top of sealing radiator, bottom is provided with drainpipe 33.The second gas piping other end is connected in the draft tube of sealing radiator, and setting is respectively arranged with valve (K1, K2, K3, K4) in the first gas piping, the second gas piping, water injection pipe and drainpipe.For convenience of describing, carry out label to valve, the label of valve is with reference to figure 2.
Water flooding regime has two kinds at least: the first, and water injection pipe 31 is connected water supply pipe, and is equipped with and carries out water filling work at the retaining valve (D) that only can outwards be vented at the top of seal case, during water filling, can realize filling water completely.
It two is that use water ladle to Manual water injection in sealing radiator by funnel, be batch (-type) water filling, this structure can omit the retaining valve of an exhaust.
Use the sampling method of said apparatus extracting gases sample in negative-pressure pipeline, step is as follows:
First, close the valve (K1, K2) on first, second gas piping tracheae, make the valve at drainpipe place (K4) be in closed condition simultaneously, in sealing radiator, fill water by water injection pipe;
Then, close the valve (K3) on water injection pipe, the valve opened the valve (K1, K2) on first, second gas piping simultaneously and open on drainpipe, closes the valve on drainpipe when the liquid in sealing radiator stops dirty.The graduated cylinder accurate-metering of lower part is utilized to flow out the volume of water.
Complete primary sample, the sediment of the formation in absorbing liquid bottle is the material absorbed, and the liquid in graduated cylinder is the volume of corresponding gas, by analyzing, measuring the content that accurately can draw the test substance contained in coal gas.
It should be noted that, the cold district easily frozen in the winter time, the water in sealing radiator can use salt solution or anti freezing solution to substitute, and can normally use.
This sampler adopts Reduction by Drainage platen press, can accurate-metering coal gas volume, avoids error in dipping.During sampling, this device inside should keep impermeability, avoids air to be mixed into.
Claims (3)
1. the sampler of an extracting gases sample in negative-pressure pipeline, comprise gas piping, gas piping, absorbing liquid bottle, sealing radiator, graduated cylinder and valve, it is characterized in that, below the liquid level in absorbing liquid bottle is inserted in external one first gas piping on described gas piping and one end of the first gas piping, water injection pipe and draft tube is provided with at the top of described sealing radiator, one second gas piping one end self-absorption liquid bottle Base top contact is also connected in the draft tube of sealing radiator, drainpipe is provided with in the bottom of described sealing radiator, and at the first gas piping, second gas piping, valve is respectively arranged with in water injection pipe and drainpipe, be placed on immediately below described drainpipe with graduated described graduated cylinder.
2. the sampler of a kind of extracting gases sample in negative-pressure pipeline according to claim 1, is characterized in that, described water injection pipe connects water supply pipe, and is provided with a retaining valve that only can outwards be vented at the top of described seal case.
3., based on the sampling method of extracting gases sample in negative-pressure pipeline that any one sampler in claim 1 or 2 carries out, it is characterized in that, comprise the steps:
First, close the valve on first, second gas piping, make the valve at drainpipe place be in closed condition simultaneously, in sealing radiator, fill water by water injection pipe;
Then, close the valve on water injection pipe, open first simultaneously, valve in draft tube and the valve opened on drainpipe, close the valve on drainpipe when the liquid in sealing radiator stops dirty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112473.0A CN103852351B (en) | 2014-03-25 | 2014-03-25 | A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112473.0A CN103852351B (en) | 2014-03-25 | 2014-03-25 | A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method |
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| Publication Number | Publication Date |
|---|---|
| CN103852351A CN103852351A (en) | 2014-06-11 |
| CN103852351B true CN103852351B (en) | 2016-04-13 |
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| CN107421846B (en) * | 2017-09-21 | 2023-03-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Negative pressure type aeration concentration instrument and operation method thereof |
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| JPH10185777A (en) * | 1996-12-26 | 1998-07-14 | Hitoshi Morishita | Device for taking-in sample gs for analysis |
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|---|---|---|---|---|
| US4445390A (en) * | 1982-12-02 | 1984-05-01 | Leco Corporation | Sampling tube and apparatus |
| US4883505A (en) * | 1988-07-22 | 1989-11-28 | Iit Research Institute | Methods and apparatus for atmospheric sampling and analysis of trace contaminants |
| CN2145996Y (en) * | 1992-09-29 | 1993-11-10 | 中国石油化工总公司辽阳石油化纤公司 | Vacuum gas sampler |
| US7051604B1 (en) * | 1996-08-22 | 2006-05-30 | Mayeaux Holding Llc | Heat pipe sample fluid probe |
| CN2298512Y (en) * | 1997-06-28 | 1998-11-25 | 赵武昌 | Automatic continuous sampler for carbon monoxide sample |
| CN201072389Y (en) * | 2007-07-30 | 2008-06-11 | 和舰科技(苏州)有限公司 | Negative pressure closed sampling device |
| CN201828439U (en) * | 2010-10-26 | 2011-05-11 | 湖北省环境监测中心站 | Sampling device of sulphur dioxide gas in flue |
| CN102156062A (en) * | 2011-03-25 | 2011-08-17 | 方斌 | Method and device for sampling emergent gas in natural spring water |
| CN202453142U (en) * | 2012-02-27 | 2012-09-26 | 徐州中矿安达矿山科技有限公司 | Multi-point synchronous pressure measuring and sampling device |
| CN202547983U (en) * | 2012-05-04 | 2012-11-21 | 山西华顿实业有限公司 | Device for sampling water-soluble gas components in engine tail gases |
| CN203732328U (en) * | 2014-03-25 | 2014-07-23 | 济钢集团有限公司 | Sampling device capable of extracting gas sample from negative pressure pipeline |
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