CN203732328U - Sampling device capable of extracting gas sample from negative pressure pipeline - Google Patents
Sampling device capable of extracting gas sample from negative pressure pipeline Download PDFInfo
- Publication number
- CN203732328U CN203732328U CN201420136025.XU CN201420136025U CN203732328U CN 203732328 U CN203732328 U CN 203732328U CN 201420136025 U CN201420136025 U CN 201420136025U CN 203732328 U CN203732328 U CN 203732328U
- Authority
- CN
- China
- Prior art keywords
- gas
- gas piping
- pipe
- sampling
- negative pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model relates to a sampling device capable of extracting a gas sample from a negative pressure pipeline, and can be widely applied in the sampling steps of gas inspection in front of a draught fan in the industries of iron and steel, coking, and chemistry. A first gas conveying pipe is externally connected toto a gas pipeline, one end of the first gas conveying pipe is inserted below the liquid level in an absorption liquid bottle, a water injection pipe and a gas inlet pipe are arranged at the top of a sealed water tank, one end of a second gas conveying pipe is led out from the top part of the absorption liquid bottle and is connected toto the gas inlet pipe, a drain pipe is arranged at the bottom of the sealed water tank, a valve is arranged in each of the first gas conveying pipe, the second gas conveying pipe, the water injection pipe and the drain pipe, and a measuring cylinder with scales is arranged right below the drain pipe. The utility model further provides a sampling method based on the device. A new way is fund for the negative pressure sampling mode of gas, the inaccurate metering of the sampling volume is avoided effectively, the blending of the air is avoided, and the accuracy of the negative pressure sampling of the gas is guaranteed.
Description
Technical field
The utility model provides a kind of gas sampling point that iron and steel, coking, chemical industry gas piping pressure are less than or equal to atmospheric pressure that is widely used in.
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 gas piping pressure before fan blower is generally negative pressure (approximately negative 5KPa), present stage is most of uses negative pressure pump sampling.Negative pressure pump is extracted coal gas out by rotating, and need to coordinate gas meter to calculate the volume of the coal gas of extracting 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 the gas meter always cannot accurate counting, directly affected the assay of hydrogen sulfide content in coal gas, data deviation is large, does not meet and produces reality.
Therefore need to make improvements, making can accurate-metering gas sampling volume, can check accurately the content of coal gas sulfuretted hydrogen before blower fan, provides accurate data for producing.
utility model content
For above-mentioned situation, the utility model utility model aim to provide a kind of in negative-pressure pipeline the sampler of extracting gases sample, it can be less than or equal at gas piping pressure the gas sampling point Measurement accuracy sample volume of atmospheric pressure, and make simple and easy, easy to operate, cancel negative pressure pump, operating cost is low, is worth universal and promotes.
For achieving the above object, method described in the utility model is solved by following technical scheme:
A kind of in negative-pressure pipeline the sampler of extracting gases sample, comprise gas piping, gas piping, absorption liquid bottle, sealing radiator, graduated cylinder and valve, it is characterized in that, on described gas piping, insert below the liquid level in absorption liquid bottle one end of external one first gas piping and the first gas piping, be provided with water injection pipe and draft tube 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, bottom at described sealing radiator is provided with drainpipe, and at the first gas piping, the second gas piping, in water injection pipe and drainpipe, be respectively arranged with valve, with graduated described graduated cylinder be placed on described drainpipe under.
Described water injection pipe connects water supply pipe, and is provided with an only outside retaining valve for exhaust 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 in closed condition simultaneously, in sealing radiator, fill water by water injection pipe;
Then, close the valve on water injection pipe, open first, valve in draft tube and open the valve on drainpipe simultaneously, when the liquid in sealing radiator stops closing when dirty the valve on drainpipe.
Complete primary sample, by the content of analyzing, metering can accurately draw the test substance containing in coal gas.
The negative-pressure gas sampler that the utility model provides be specially adapted to gas in pipelines pressure be less than atmospheric pressure gas piping, the core technology of this device adopts drainage principle, and gas volume is effectively measured, and avoids sampling error.Sample more accurately than the mode of traditional use negative pressure pump sample drawn, and cost is lower, this antifouling type water seal be adapted to coal gas etc. many in water-fast gas, there is good economic benefit and social benefit.
brief description of the drawings
Accompanying drawing 1 sampler process chart.
Accompanying drawing 2 samplers fill the constitutional diagram after water.
Constitutional diagram after accompanying drawing 3 sampler drainings.
Embodiment
As shown in Figures 1 to 3,
A sampler for extracting gases sample in negative-pressure pipeline, comprises gas piping 1, gas piping, absorption liquid bottle 2, sealing radiator 3, graduated cylinder 4 and valve K.
Absorption 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 absorption liquid bottle connects the first gas piping, the air intake opening end of absorption liquid bottle is positioned at the bottom of liquid bottle, in absorption liquid bottle 2, be equipped with can adsorption of hydrogen sulfide gas liquid, 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 that the first gas piping is emulsion tube.The outlet of absorption liquid bottle connects the second gas piping, and more than the air entry of the second gas piping is arranged in the liquid level of absorption liquid bottle.
The complete airtight casing of sealing radiator 3 for using stainless steel to make, 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 arranges and be 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, valve is carried out to label, the label of valve is with reference to figure 2.
Water flooding regime has two kinds at least: the first, water injection pipe 31 is connected to water supply pipe, and be equipped with the top of seal case only outwards the retaining valve of exhaust (D) carry out water filling work, when water filling, can realize and fill water completely.
It two is, uses water ladle to Manual water injection in sealing radiator by funnel, is batch (-type) water filling, and this structure can be omitted the retaining valve of an exhaust.
The sampling method that uses 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 (K4) at drainpipe place in closed condition simultaneously, in sealing radiator, fill water by water injection pipe;
Then, close the valve (K3) on water injection pipe, open the valve (K1, K2) on first, second gas piping simultaneously and open the valve on drainpipe, when the liquid in sealing radiator stops closing when dirty the valve on drainpipe.Utilize the graduated cylinder accurate-metering of lower part to flow out the volume of water.
Complete primary sample, the sediment of the formation in absorption liquid bottle is the material absorbing, and the liquid in graduated cylinder is the volume of corresponding gas, by the content of analyzing, metering can accurately draw the test substance containing in coal gas.
It should be noted that, easy icing cold district 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, avoid error in dipping.When sampling, this device inside should keep impermeability, avoids air to sneak into.
Claims (2)
1. the sampler of an extracting gases sample in negative-pressure pipeline, comprise gas piping, gas piping, absorption liquid bottle, sealing radiator, graduated cylinder and valve, it is characterized in that, on described gas piping, insert below the liquid level in absorption liquid bottle one end of external one first gas piping and the first gas piping, be provided with water injection pipe and draft tube 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, bottom at described sealing radiator is provided with drainpipe, and at the first gas piping, the second gas piping, in water injection pipe and drainpipe, be respectively arranged with valve, with graduated described graduated cylinder be placed on described drainpipe under.
According to claim 1 a kind of in negative-pressure pipeline the sampler of extracting gases sample, it is characterized in that, described water injection pipe connects water supply pipe, and is provided with an only outside retaining valve for exhaust at the top of described seal case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136025.XU CN203732328U (en) | 2014-03-25 | 2014-03-25 | Sampling device capable of extracting gas sample from negative pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136025.XU CN203732328U (en) | 2014-03-25 | 2014-03-25 | Sampling device capable of extracting gas sample from negative pressure pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732328U true CN203732328U (en) | 2014-07-23 |
Family
ID=51202391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136025.XU Withdrawn - After Issue CN203732328U (en) | 2014-03-25 | 2014-03-25 | Sampling device capable of extracting gas sample from negative pressure pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852351A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Sampling device and sampling method for pumping gas sample in self-negative-pressure pipeline |
| CN104406824A (en) * | 2014-09-29 | 2015-03-11 | 泸州北方化学工业有限公司 | Method for sampling flammable and explosive gas under negative pressure |
-
2014
- 2014-03-25 CN CN201420136025.XU patent/CN203732328U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852351A (en) * | 2014-03-25 | 2014-06-11 | 济钢集团有限公司 | Sampling device and sampling method for pumping gas sample in self-negative-pressure pipeline |
| CN103852351B (en) * | 2014-03-25 | 2016-04-13 | 济钢集团有限公司 | A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method |
| CN104406824A (en) * | 2014-09-29 | 2015-03-11 | 泸州北方化学工业有限公司 | Method for sampling flammable and explosive gas under negative pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204027878U (en) | Multilayer liquid sampler | |
| CN103913279A (en) | Method and device for testing leakproofness of oil cooler by mixing helium and air | |
| CN103149122B (en) | Steel-making calcium activated analyser in calcium system auxiliary agent | |
| CN104007041A (en) | Device for determining content of hydrogen sulfide in coal bed | |
| CN203732328U (en) | Sampling device capable of extracting gas sample from negative pressure pipeline | |
| CN203275349U (en) | Ammonia nitrogen concentration water quality analyzer | |
| CN204831860U (en) | Associated gas hydrogen sulfide sampling device | |
| CN102507421B (en) | Atmospheric-pressure closed multi-interface corrosion experimental device as well as manufacturing and using method thereof | |
| CN206192840U (en) | Dual -purpose permeability testing arrangement of rock core gas -liquid | |
| CN103852351B (en) | A kind of sampler of extracting gases sample in negative-pressure pipeline and sampling method | |
| CN203929719U (en) | Coal seam hydrogen sulfide content determinator | |
| CN102175506B (en) | Diluting device used for on-line water quality analysis | |
| CN104297421A (en) | Hydrogen sulfide-containing sewage treatment agent test apparatus | |
| CN203798515U (en) | Equipment for testing sealing of oil cooler by using mixing of helium and air | |
| CN103852567B (en) | Reservoir water environment simulator | |
| CN203299019U (en) | Needle tubing type sampler | |
| CN211856046U (en) | Device for collecting soil breathing gas | |
| CN204807439U (en) | Be applicable to and water funkly be afraid of that oxygen compound carries out ultraviolet cell for fluorescence detection | |
| CN202501998U (en) | Gas sampling and detecting device | |
| CN204514911U (en) | A kind of sludge specific resistance measurement mechanism | |
| CN209102465U (en) | A kind of experiment fermentation gas collection and measuring device | |
| CN204302027U (en) | A kind of blanking-tube sampling device tested | |
| CN111366423A (en) | Device for collecting soil breathing gas and gas collecting method | |
| CN207408268U (en) | A kind of fire foam mobility-detected device | |
| CN203365273U (en) | Jacketed Z type ubbelohde viscometer applicable to small full-automatic viscometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |