CN103344462A - Gas sampler with dedusting function as well as gas sampling method - Google Patents
Gas sampler with dedusting function as well as gas sampling method Download PDFInfo
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- CN103344462A CN103344462A CN2013103004048A CN201310300404A CN103344462A CN 103344462 A CN103344462 A CN 103344462A CN 2013103004048 A CN2013103004048 A CN 2013103004048A CN 201310300404 A CN201310300404 A CN 201310300404A CN 103344462 A CN103344462 A CN 103344462A
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Abstract
The invention provides a gas sampler with a dedusting function. The gas sampler with the dedusting function comprises a sampling pipe, a gas sampling port, a piston, a piston pull rod, an atomizing device, a refrigerating semiconductor, a blow-down valve and a gas sampler shell, wherein the gas sampling port is arranged in one end of the sampling pipe, and is provided with a group of unidirectional gas intake valves and unidirectional gas exhaust valves; the piston is arranged in the sampling pipe; the piston pull rod is connected with the piston and extends out of the other end of the sampling pipe; the atomizing device is used for spraying water mist into the sampling pipe; the refrigerating semiconductor is arranged on the outer side of the sampling pipe; and the blow-down valve is arranged on a part, which is close to the gas sampling port, of the sampling pipe. The invention also provides a rear-mounted dedusting method. The gas sampler with the dedusting function and the rear-mounted dedusting method provided by the invention have the advantages of convenience in carrying, low cost, high efficiency, good dedusting effect, and no influence to the environment humidity.
Description
Technical field
The present invention relates to the gas sampling fields of measurement, be specifically related to a kind of gas sampler and a kind of gas sampling method.
Background technology
When gas detects, for example when carrying out Atmospheric components detection, the detection of coal mine gas gas, the detection of vehicle spray painting workshop toxic gas, often will use gas sampler environmental gas is sampled, the professional analytical instrument of gas injection to be measured that obtains of will sampling is then analyzed.
At application number: 200420052283.6, the applying date: 2004.07.14, utility model title: in the Chinese utility model patent of " a kind of gas sampler ", and application number: 200910197485.7, the applying date: 2009.10.21, denomination of invention: in the Chinese invention patent of " gas sampler ", disclosed all is portable gas sampler.But the above-mentioned gas sampling thief does not all possess dust-filtering function, under the more situation of sampling environment dust, and under the coal mine or vehicle spray painting workshop for example, when using these gas samplers, gas to be measured need just can detect through further processing.
At application number: 201120132333.1, the applying date: 2011.04.29, utility model title: in the Chinese utility model patent of " gas sampling rifle ", utilizing fore filter is dedusting to be measured, this gas sampling rifle has portable advantage, but under the more situation of dust, filtrator easy blocked need replacing or cleaning, increase cost, reduced efficient.
At application number: 201210007352.0, the applying date: 2012.01.12, denomination of invention: " a kind of synchronous collection Atmospheric CO
2And the apparatus and method of steam sample " the Chinese invention patent application in; need special atmosphere filtering system that dust is filtered equally; simultaneously; also to comprise steam condensation and storage system in the disclosed technical scheme of this patented claim; but the effect of this system is the steam sample of gathering in the atmosphere, irrelevant with dedusting.This device is not mancarried device yet.
At application number: 201010110543.0, the applying date: 2010.02.9, denomination of invention: in the Chinese invention patent of " a kind of coal mine underground mobile gas beam tube sampling and monitoring device ", by the remote monitoring of a whole set of complicated system's realization to mine gas, still need to have special fly-ash separator in this device.
In order to reduce cost, prolong service life of equipment, under the more environment of dust, for example under the coal mine, usually the method that adopts be earlier to water spray in the sampling environment periphery certain limit to reduce dust concentration, and then carry out gas collecting, but this method has the workplace of strict demand, for example vehicle spray painting workshop for those for ambient humidity, obviously be inapplicable, because this can cause the decline of product quality.
On the other hand, the air intake opening of above-mentioned gas sampling apparatus all adopts the mode of single tube air inlet, like this when gathering gas, flow-disturbing can appear in inherent air intake opening position, the space of stored-gas, make between the interior air pressure of gas storage device or components contents and the environment value and produce deviation, and then influence accuracy of detection.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of portable, highly versatile, the gas sampler with dedusting function with low cost are provided, be specially adapted to the gas sampling under the more environment of dust.
For achieving the above object, the invention provides following technical scheme:
A kind of gas sampler with dedusting function comprises: sampling pipe; Be arranged on the gas sampling mouth of described sampling pipe one end, described gas sampling mouth is provided with one group of breather cheek valve and one-way exhaust valve; Be arranged on the piston in the described sampling pipe; The pitch brace that is connected and stretches out the other end of described sampling pipe with piston; Spraying plant for atomized water spray in described sampling pipe; Be arranged on the refrigeration semiconductor in the described sampling pipe outside; Be arranged on the described sampling pipe blowoff valve near described gas sampling mouth position; The gas sampler housing.
Preferably, described spraying plant and described pitch brace integrate, and described pitch brace has the water storage cavity of hollow, and one or more playpipes begin to extend and run through described piston towards described piston from described water storage cavity.
Preferably, described sampling pipe is by the quartz material manufacturing.
Preferably, have view window on the described gas sampler housing.
Preferably, described gas sampler housing is by the heat-barrier material manufacturing.
Another object of the present invention provides the stronger gas sampling method of a kind of versatility, carries out dedusting when gas is sampled, and can not impact ambient humidity, and is with low cost.
For achieving the above object, the invention provides following technical scheme:
A kind of gas sampling method, the step that comprises has: gas extraction to be measured is entered in the sampling pipe; Water spray in the described sampling pipe; Described sampling pipe cooled off make the condensation vapor that is attached with dust; Gas to be measured in the described sampling pipe is drained in the detecting instrument.
Preferably, collect soiling solution in the described sampling pipe in the described gas to be measured in discharging, gas to be measured gives off described sampling pipe with described soiling solution after finishing discharging from from described sampling pipe to described detecting instrument.
Preferably, water-vapo(u)r saturation or the supersaturation of water spray in described gas to be measured in the described sampling pipe.
Beneficial effect of the present invention is:
The present invention has adopted the structure that is similar to syringe type, simple in structure and portable, after the pull piston rod enters sampling pipe with gas extraction to be measured, again by spraying plant to water spray in the sampling pipe, utilize the refrigeration semiconductor refrigeration then, condense on the sampling tube wall after being attached with the steam cooling of dust, in the detecting instrument during discharging gas to be measured, along with pushing piston rod, piston is discharged gas to be measured on one side, on one side the soiling solution on the tube wall is scraped and push forward, because blowoff valve is arranged on the position near the gas sampling mouth, therefore when gas discharging to be measured was finished, soiling solution had also all been collected in the blowoff valve, and then open blowoff valve soiling solution is discharged, prepare for use next time.Therefore, gas sampler of the present invention utilizes steam to finish dedusting when carrying out gas sampling, and itself just possesses dedusting function, improved work efficiency, and do not needed special dedusting filter, can use repeatedly, with low cost, be specially adapted to the bigger place of environment dust concentration.And dust removal process is to carry out in sampling pipe, and ambient humidity can not impact to external world, and versatility is better.And the gas sampling mouth is by the breather cheek valve air inlet, by the one-way exhaust valve exhaust, both having guaranteed sampling finish after sealing in the gas sampler transportation, avoided again owing to occurring the adverse effect to accuracy of detection that flow-disturbing causes in the sampling pipe.
Further, piston rod is processed the water storage cavity of hollow, water storage cavity is communicated with sampling pipe inside by thinner playpipe, in the pull piston rod, form negative pressure because sampling pipe is inner, so the water in the water storage cavity can spurt into that sampling pipe is inner to form water smoke through playpipe, thus spraying plant and pitch brace is together integrated, no longer need extra spraying plant, structure is compacter, simple.
Further, sampling pipe is by the quartz material manufacturing, and not only corrosion resistance is good, and condenses in that soiling solution on the tube wall is scraped by piston easily and mobile in pipe, and filth-discharging effect is good.
Further, open view window at housing, conveniently the water-vapo(u)r saturation state in the sampling pipe, cooling process etc. are observed.
Further; make the gas sampler housing by heat-barrier material; not only can protect sampling pipe, refrigeration semiconductor; in the time of can also preventing from carrying out gas sampling or transportation during gas sampler hand or external environment the cooling effect of refrigeration semiconductor is exerted an influence, and avoid the sampling pipe internal gas pressure is exerted an influence.
Simultaneously.When utilizing method of the present invention to carry out gas sampling, the spray for dust suppression process is placed after the sampling process, avoided the influence to ambient humidity.
Further, water spray in the sampling pipe until saturated or supersaturation, not only is conducive to the abundant absorption of the dust in the gas to be measured and improves dust removing effects, and be convenient to visual inspection.
Description of drawings
Fig. 1 is the structural representation of the gas sampler of embodiments of the invention.
Description of symbols among the last figure: 1-breather cheek valve, 2-sealing nut, 3-sealing rubber ring, the 4-one-way exhaust valve, 5-is gum cover fixedly, the 6-piston, the 7-blowoff valve, 8-pitch brace, 9-water storage cavity, the 10-sampling pipe, 11-refrigeration semiconductor, 12-gas sampler housing, 13-is gum cover fixedly, and 14-is swivel nut fixedly, 15-pull bar web member, the 16-playpipe, 17-view window, 100-gas sampler, gas sampling mouth 110.
Embodiment
With reference to figure 1, the sampling pipe 10 of gas sampler 100 is used for holding gas to be measured, multiple material manufacturings such as the enough metals of energy, plastics, rubber, quartz, but preferably adopt the quartz material manufacturing.Left end at diagram sampling pipe 10 is provided with gas sampling mouth 110, is used for environment gas to be measured and enters sampling pipe 10 or be discharged into the professional detecting instrument (not shown) from sampling pipe 10.Generally, the gas sampling mouth can adopt single tubular structure, perhaps the consideration for sealing increases seal valve at tubular structure, but if adopt single tubular structure, then in sampling process, can produce flow-disturbing near the mouth of pipe, air pressure in the sampling pipe is exerted an influence, therefore sampling pipe 10 internal gas pressures are also unequal with the sampling ambient pressure, correspondingly gas component concentrations is not actual value, testing result is caused adverse effect, therefore in the present embodiment, adopt the form of one group of breather cheek valve 1 and one-way exhaust valve 4, so not only played sealing function, and the effect of breather cheek valve 1 smooth air when having played extracting gases, improve accuracy of detection, the effect of one-way exhaust valve 4 is similar.Left end at sampling pipe 10, by sealing nut 2, sealing rubber ring 3, fixedly gum cover 5 seals, certainly, those of ordinary skills can also adopt the sealing means that is similar between syringe and the syringe needle, perhaps directly sampling pipe 10 is fused to 110 welding of gas sampling mouth or heat, perhaps takes other suitable sealing means to seal.Similarly, in the present embodiment, the right-hand member of sampling pipe 10 by fixing gum cover 13 and fixedly swivel nut 14 seal, but the present invention does not get rid of and adopts other seal form.In sampling pipe 10, be provided with piston 6, pitch brace 8 is connected with piston and stretches out from the right-hand member of sampling pipe 10, therefore during pull pitch brace 8, form negative pressure in the sampling pipe 10, gas to be measured enters sampling pipe 10 and is stored in wherein through breather cheek valve 1, and promoting pitch brace 8, gas to be measured can discharge to enter professional detecting instrument through one-way exhaust valve 4.Therefore, structure of the present invention and syringe are similar.Process the water storage cavity 9 of hollow in the inside of pitch brace 8, and playpipe 16 extends until running through piston 6 towards piston 6 from water storage cavity 9 beginnings, therefore when pull pitch brace 8, because form negative pressure in the sampling pipe 10, the water in the water storage cavity 9 can spray into the inside of sampling pipe 10 and form water smoke through playpipe 16.Playpipe 16 shown in Figure 1 is one, also can be set to many certainly, improves nebulization efficiency.Right-hand member at pitch brace 8 is provided with pull bar web member 15, on the one hand makes things convenient for the push-and-pull pitch brace, can utilize pull bar web member 15 to realize being communicated with of water storage cavities 9 and water tank (not shown) on the other hand, constantly is water storage cavity 9 moisturizings.Do not have independent spraying plant in the present embodiment, but spraying plant and pitch brace 8 are integrated together, structure is simpler, compact.Those of ordinary skills can imagine at an easy rate, can also independent spraying plant be set for gas sampler 100, but can increase structure complexity and cost like this.Arranged outside at sampling pipe 10 has refrigeration semiconductor 11, and it is by power supply (not shown, for example battery) power supply refrigeration.On sampling pipe 10, near the position of gas sampling mouth 110, be provided with blowoff valve 7, be used for collect and to hold soiling solution and with its discharge.Gas sampler housing 12 surrounds sampling pipe 10 and refrigeration semiconductor 11, and for its inner structure provides protection, and preferred gas sampling thief housing 12 is by heat-barrier material manufacturings such as glass fibre, asbestos, evacuated panels.When sampling pipe 10 is made by quartz material, open view window 17 at gas sampler housing 12, can observe directly the inner case of sampling pipe 10, therefore have advantage.
Under the more environment of dust, when the gas sampler 100 in the application present embodiment carries out gas sampling, at first the pull pitch brace 8, gas extraction to be measured is entered in the sampling pipe 10, in sampling, water in the water storage cavity 9 can spray and enter sampling pipe 10 formation water smokes, perhaps utilizes independent spraying plant water spray after the action of finishing pull pitch brace 8.Then, connect power supply and make refrigeration semiconductor 11 refrigeration, with contained steam cooling in the gases to be measured in the sampling pipe 10, dust will be attached on the steam and along with condensation vapor forms soiling solution to the tube wall of sampling pipe 10 like this, thereby the dust in the gas to be measured is eliminated.Preferred water-vapo(u)r saturation or the supersaturation of water spray in gas to be measured, dust removing effects is better like this, and is convenient to the dedusting progress is observed.When needs detect, promote pitch brace 8, be discharged in the detecting instrument as specialty through the gas to be measured of dedusting, simultaneously, piston 6 scrapes the soiling solution on the tube wall of sampling pipe 10 and pushes forward, enter blowoff valve 7 and be stored in wherein, when piston 6 arrives high order ends, the collection to soiling solution has also been finished in gas discharging to be measured when finishing.At last, blowoff valve 7 is opened the discharge soiling solution, blowoff valve 7 can wash, and gas sampler 100 can be repeatedly used, and not worry obstructing problem, and cost is low, the efficient height.
The principal feature of utilizing gas sampler 100 of the present invention to carry out the method for gas sampling is, former preposition dedusting is become rearmounted dedusting, and is to utilize condensate water to carry out dedusting, can not impact ambient humidity.The above-mentioned method of sampling is equally applicable to the gas sampler of other form, therefore can sum up a kind of new gas sampling method, and the step that comprises has: gas extraction to be measured is entered in the sampling pipe; Water spray in the sampling pipe; Utilize other facilities such as refrigeration semiconductor or refrigerator-freezer that sampling pipe is cooled off and make the condensation vapor that is attached with dust; Gas to be measured in the sampling pipe is drained in the detecting instrument.Soiling solution in the sampling pipe can be finished laggard row in the gas discharging and collect, but when utilizing device of the present invention, can realize emission gases and collect soiling solution and carry out simultaneously, and unified with the soiling solution discharge again after finishing gas discharging to be measured, efficient is higher more convenient.
Claims (8)
1. the gas sampler with dedusting function is characterized in that, comprising:
Sampling pipe;
Be arranged on the gas sampling mouth of described sampling pipe one end, described gas sampling mouth is provided with one group of breather cheek valve and one-way exhaust valve;
Be arranged on the piston in the described sampling pipe;
The pitch brace that is connected and stretches out the other end of described sampling pipe with piston;
Spraying plant for atomized water spray in described sampling pipe;
Be arranged on the refrigeration semiconductor in the described sampling pipe outside;
Be arranged on the described sampling pipe blowoff valve near described gas sampling mouth position;
The gas sampler housing.
2. gas sampler according to claim 1, it is characterized in that, described spraying plant and described pitch brace integrate, and described pitch brace has the water storage cavity of hollow, and one or more playpipes begin to extend and run through described piston towards described piston from described water storage cavity.
3. gas sampler according to claim 1 and 2 is characterized in that, described sampling pipe is by the quartz material manufacturing.
4. gas sampler according to claim 4 is characterized in that, has view window on the described gas sampler housing.
5. gas sampler according to claim 1 and 2 is characterized in that, described gas sampler housing is by the heat-barrier material manufacturing.
6. a gas sampling method is characterized in that, the step that comprises has:
Gas extraction to be measured is entered in the sampling pipe;
Water spray in the described sampling pipe;
Described sampling pipe cooled off make the condensation vapor that is attached with dust;
Gas to be measured in the described sampling pipe is drained in the detecting instrument.
7. method according to claim 6 is characterized in that, collects soiling solution in the described sampling pipe in the described gas to be measured in discharging, and gas to be measured gives off described sampling pipe with described soiling solution after finishing discharging from from described sampling pipe to described detecting instrument.
8. according to claim 6 or 7 described methods, it is characterized in that water-vapo(u)r saturation or the supersaturation of water spray in described gas to be measured in the described sampling pipe.
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Cited By (9)
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|---|---|---|---|---|
| CN106694470A (en) * | 2017-03-17 | 2017-05-24 | 安徽工程大学 | Blackboard eraser dust remover |
| CN107576536A (en) * | 2017-08-31 | 2018-01-12 | 河南科技大学 | A kind of combustion product gases sample device of thing containing high concentration particle |
| CN107588993A (en) * | 2017-09-15 | 2018-01-16 | 辽宁工程技术大学 | A kind of mine goaf beam tube drainage dirt catcher and its application method |
| CN108097660A (en) * | 2018-01-18 | 2018-06-01 | 上海捷涌科技有限公司 | Air blowing device |
| WO2018166776A1 (en) * | 2017-03-17 | 2018-09-20 | Tata Steel Nederland Technology B.V. | Lance for a gas analysis system |
| CN108917967A (en) * | 2018-07-12 | 2018-11-30 | 辽宁工程技术大学 | A kind of goaf bound polyamine device and installation method |
| CN109541142A (en) * | 2018-11-28 | 2019-03-29 | 徐州江煤科技有限公司 | A kind of pump suction type CH_4 detection device |
| CN110006711A (en) * | 2019-05-07 | 2019-07-12 | 胡楠 | A kind of underground mining wasted nickel catalyst sampler |
| CN110441492A (en) * | 2019-08-30 | 2019-11-12 | 贵州大学 | A kind of mining combustible gas detecting device with spray for dust suppression function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108917967A (en) * | 2018-07-12 | 2018-11-30 | 辽宁工程技术大学 | A kind of goaf bound polyamine device and installation method |
| CN109541142A (en) * | 2018-11-28 | 2019-03-29 | 徐州江煤科技有限公司 | A kind of pump suction type CH_4 detection device |
| CN110006711B (en) * | 2019-05-07 | 2022-04-29 | 胡楠 | Underground mining waste gas detection sampler |
| CN110006711A (en) * | 2019-05-07 | 2019-07-12 | 胡楠 | A kind of underground mining wasted nickel catalyst sampler |
| CN110441492A (en) * | 2019-08-30 | 2019-11-12 | 贵州大学 | A kind of mining combustible gas detecting device with spray for dust suppression function |
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Application publication date: 20131009 |