CN201926618U - Optical measuring probe system for high humidity low concentration gas fume pollutants - Google Patents
Optical measuring probe system for high humidity low concentration gas fume pollutants Download PDFInfo
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- CN201926618U CN201926618U CN2010206546736U CN201020654673U CN201926618U CN 201926618 U CN201926618 U CN 201926618U CN 2010206546736 U CN2010206546736 U CN 2010206546736U CN 201020654673 U CN201020654673 U CN 201020654673U CN 201926618 U CN201926618 U CN 201926618U
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Abstract
The utility model relates to the field of gas fume filtration, provides an optical measuring probe system for high humidity and low concentration gas fume pollutants and is used for solving the problem in the prior art that the gas fume detection process is easy to cause errors and the probe is difficult to clean. A probe is connected with a probe filtration structure, and a reflux device is connected with the probe; gas in a gas duct flows to the probe under the negative pressure effect generated by the reflux device, and then the probe measures the gas; the probe filtration structure is sleeved on the exterior of a vent hole of the probe to filter the impurities in the gas fume; flexible filter material of the probe filtration structure covers the vent hole of the probe; and the flexible filter material is formed by a macrofiber fabric layer and a polytef film layer with micropores. By adopting a dustproof cover and the flexible filter material in the embodiment, the purpose of enhancing the filtering effect is realized, and a lens and the filtration structure in the probe also can be cleaned.
Description
It is 201020539945.8 that the application requires on September 25th, 2010 to submit Patent Office of the People's Republic of China, application number to, denomination of invention is the right of priority of the Chinese patent application of " a kind of high humility low-concentration flue gas pollutant optical measurement probe system ", and its full content is by reference in conjunction with in this application.
Technical field
The utility model relates to the flue gas detection range, particularly about a kind of high humility low-concentration flue gas pollutant optical measurement probe system.
Background technology
Because increasing the weight of day by day and human attention for environmental problem of environmental pollution, the blowdown continuous monitoring technology of stationary pollution source is grown up, especially the SO in the discharging flue gas pollutant such as boiler
2And NO
XThe gas-monitoring technology is developed.
The extraction-type continuous emission monitoring system of flue gas that begin to use the seventies in 20th century wherein is divided into two kinds again: extract monitoring system and dilution extraction monitoring system fully.
Extracting monitoring system fully is from flue fume extraction to be come out, and flows to analyser through the pipeline of long distance and measures.Flue gas will pass through many processing before measuring, to filter the filtering particle after at first extracting, in order to prevent condensate water, need be to the pipeline heating of long distance, need the fast cooling dehydration before entering analyser, system needs pipeline, valve, cooling device, heating tube, aspiration pump and gas delivery and adjusting parts.Fume extraction pop one's head in very easily obstruction, complicated pipelines and a large amount of pre-treatment processes also cause system complex, failure rate height, measuring accuracy is low and measures defectives such as the response time is long, cause SO simultaneously when dehydration inevitably
2Dissolving produces SO
2The measurement of concetration error.
Dilution is extracted monitoring system and is extracted SO in the monitoring system fully for solving
2The concentration loss of dissolving, the flue gas of taking to extract passes through the dilution of drying nitrogen hundreds of times, and the moisture in the flue gas is significantly reduced, and makes it can not produce condensation, is delivered to analyser then by the road and measures.But probe stops up or the generation of crystal because the variation of the pressure of flue, temperature, component, particularly dilution are extracted, and makes dilution ratio produce error, causes SO
2Measuring error, after the vast scale dilution, SO
2Concentration is extremely low, and very high to the sensitivity requirement of analyser, the user will bear higher instrument expense.It is external producer equipment substantially that monitoring system is extracted in dilution simultaneously, and the product of domestic manufacturer is that the introduction external product is integrated substantially, causes problems such as after sale service is bad, maintenance cost height.
The nineties in 20th century, second generation flue gas monitoring technology was that direct monitoring system grows up, system does not need the fume extraction smoke outlet flue, only the optical measurement probe need be inserted flue, flue gas flows through probe, flue gas is passed in the ultraviolet ray of probe emission, and the mirror reflects that ultraviolet ray outreaches is returned, and passes flue gas once more, twice ultraviolet ray through flue gas is received and is converted to electric signal, because the SO in the flue gas
2And NO
XHave the ultraviolet character of absorption, measure and transmit and receive ultraviolet intensity difference, can calculate SO
2And NO
XConcentration.
Directly monitoring system is utilized the ultraviolet spectral analysis technology, directly finishes SO in flue
2Measurement of concetration, its probe to be used openly, promptly flue gas directly passes probe optical measurement pond, also has to filter openly, promptly puts the ceramic filter cylinder in outside, open optical measurement pond, the particle in the flue gas enters probe after by filtering again.Directly monitoring system does not need flue gas is carried out complicated processing, and states such as the temperature of flue gas, pressure do not change, and at the flue scene flue gas is directly measured, and therefore has simple in structurely, measures accurately corresponding characteristics fast.But directly the monitoring system probe can't charge into calibrating gas in the probe and calibrate owing to be open, calibrates after can only breaking away from flue.
Directly monitoring system is used the ultraviolet spectral analysis technology, utilizes SO
2And NO
XAbsorption to the ultraviolet spectrum specific wavelength, ultraviolet lighting is injected probe, ultraviolet light is attenuated, the photoelectric device reception that the ultraviolet light of decay is popped one's head in outer, and the degree of ultraviolet light decay and composition, concentration and the light of gas have direct ratio through the length of gas, and Lambert-Beer's law has been summed up this relation:
In the formula, ε
λ: tested gas is at the absorption coefficient of af at wavelength lambda
L: light is through the absorption light path of gas
C: the concentration of tested gas
I
0: the incident intensity of af at wavelength lambda
I: the transmitted light intensity of af at wavelength lambda
A
λ: tested gas is in the af at wavelength lambda absorbance
A
S: the mud of af at wavelength lambda and aqueous water spray film such as drip at interference
National requirements now reduces discharging energetically, and strict SO has been formulated in each department
2Emission standard is as the SO of Beijing
2Emission limit is 50mg/m
3, have only the burning low-sulfur coal, and could be up to standard through discharging after the wet desulphurization, discharge therefore that flue-gas temperature is low, high humidity, SO
2Concentration is very low, seriously corroded, and contain mud and the aqueous water spray film that a large amount of particles, desulfurizing agent and aqueous water mix and drip, extract the not competent SO of monitoring system in this case fully
2Measurement, dilution is extracted monitoring system and is measured SO
2Generation is than mistake.
Directly the ultraviolet spectral analysis technology of monitoring system is subjected to the interference of mud and water smoke drop, also can produce error.
The utility model content
The utility model embodiment provides a kind of high humility low-concentration flue gas pollutant optical measurement probe system, is used for solving in the prior art flue gas testing process occurring error easily, and probe problem not easy to clean.
The utility model provides a kind of high humility low-concentration flue gas pollutant optical measurement probe system, comprising:
Probe, filter probe structure, return channel;
Wherein probe is connected with the filter probe structure, and described probe and described filter probe structure are all inserted in the flue and measured, and return channel is connected with probe;
Gas in the flue is under the suction function that described return channel produces, flow into described probe, described probe is measured described gas, described filter probe structure is socketed on outside the air hole of described probe, impurity in the described flue gas is filtered, the flexible filtering material of described filter probe structure covers the air hole of described probe, and described flexible material is the polytetrafluoroethylene film formation that one deck long fibre fabric and one deck have micropore.
According to a further aspect of a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, described filter probe structure comprises, dust cover, conduction hole, flexible filtering material;
Described dust cover is socketed on probe, and described conduction hole is positioned on the described dust cover, and described flexible filtering material is positioned at the side that described probe air hole faces flue gas.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, the area of described flexible filtering material is greater than the area of described probe air hole, and the edge of described flexible filtering material and the described probe seal clearance of being separated by is connected.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, described probe air hole is positioned at the side that described probe faces the flow of flue gas direction, and described conduction hole is positioned at the dorsal part that described probe faces the flow of flue gas direction.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system has well heater in the described probe.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, described probe also comprises the proximal lock female joint, gas circuit transition piece near-end pore, near-end relay tracheae, window eyeglass seat pore, proximal annular rim gas circuit groove, window eyeglass seat, the window lens hole, window lens hole pore, eyeglass;
The calibration gas of normal concentration enters from the proximal lock female joint, described calibration gas enters gas circuit transition near-end pore by described proximal lock female joint, enter near-end relay tracheae and window eyeglass seat pore again, described proximal annular rim gas circuit groove is communicated with described window eyeglass seat pore, described calibration gas enters proximal annular rim gas circuit groove, described calibration gas enters the window lens hole pore that is communicated with described proximal annular rim gas circuit groove under the conducting of described proximal annular rim gas circuit groove, described window lens hole pore is positioned at the side of described eyeglass towards the probe cavity, this eyeglass is connected with described window eyeglass seat, described calibration gas flow to described lens surface by described window lens hole pore, described window lens hole is over against the side of described eyeglass towards the probe cavity, and described calibration gas flowed and enters in the described probe cavity by described window lens hole after the described eyeglass.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system also is connected with a pick-up unit with described probe, is used for the flue gas in the described probe cavity is detected.
According to another further aspect of a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, described probe also comprises far-end locknut joint, gas circuit transition piece far-end pore, far-end relay tracheae, far-end tracheae;
Gases at high pressure enter from the proximal lock female joint, described gases at high pressure enter gas circuit transition near-end pore by described proximal lock female joint, enter near-end relay tracheae and window eyeglass seat pore again, described proximal annular rim gas circuit groove is communicated with described window eyeglass seat pore, described gases at high pressure enter proximal annular rim gas circuit groove, described gases at high pressure enter the window lens hole pore that is communicated with described proximal annular rim gas circuit groove under the conducting of described proximal annular rim gas circuit groove, described window lens hole pore is positioned at the side of described eyeglass towards the probe cavity, this eyeglass is connected with described window eyeglass seat, described gases at high pressure flow to described lens surface by described window lens hole pore, described window lens hole is over against the side of described eyeglass towards the probe cavity, and the described gases at high pressure described eyeglass that flowed cleans;
Described gases at high pressure flow into described far-end locknut joint too, these gases at high pressure enter described gas circuit transition piece far-end pore by described far-end locknut joint, enter into the far-end tracheae by far-end relay tracheae, described gases at high pressure enter into the other end of described probe by described far-end tracheae, and the parts of the described probe other end are cleaned.
Another further aspect according to a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, the other end of described probe also comprises, the mirror unit pore, distal annular rim gas circuit groove, catoptron chamber, the aperture of a mirror, reflection seat, dust cover, flexible filtering material, probe air hole;
Described gases at high pressure enter described mirror unit pore by described far-end tracheae, described distal annular rim gas circuit groove is communicated with described mirror unit pore, described gases at high pressure enter into described catoptron chamber by described distal annular rim gas circuit groove, described catoptron chamber is communicated with the described aperture of a mirror, described gases at high pressure flowed by described catoptron chamber and were positioned at catoptron on the described reflection seat, and these gases at high pressure enter in the probe cavity by the described aperture of a mirror; Described dust cover is socketed on described probe, after described gases at high pressure enter in the described probe cavity, by being entered in the described dust cover by described flexible filtering material behind the described probe air hole, and discharges described dust cover by the conduction hole on the dust cover.
According to another further aspect of a kind of high humility low-concentration flue gas of the utility model embodiment pollutant optical measurement probe system, described return channel comprises, cylinder, valve rod, return channel is opened throttling valve, close throttling valve, piston, pressure gas nozzle, flue gas and fuel-air mixture compression body, valve body, sealing pad, fume pipe, tracheae, return channel near-end cavity, return channel far-end cavity;
Spray pressurized air by tracheae and pressure gas nozzle to return channel near-end cavity, described pressurized air is discharged described return-flow structure by valve body;
When the unlatching throttling valve is opened, opening pressurized air enters in the cylinder by described unlatching throttling valve, the piston that this unlatching pressurized air promotes in the cylinder moves, described piston drives valve rod and moves with the sealing pad that is connected on the described valve rod, described return channel near-end cavity and return channel far-end cavity are communicated with, flue gas in the described probe cavity enters into return channel far-end cavity and return channel near-end cavity by fume pipe, forms flue gas and fuel-air mixture compression body by entering flue in the valve body with pressurized air;
Close when opening throttling valve, the described throttling valve of cutting out is when opening, the closes compression air enters into cylinder by closing throttling valve, piston in this closes compression air push cylinder moves, described piston drives valve rod and moves with the sealing pad that is connected on the described valve rod, described return channel near-end cavity and return channel far-end cavity are cut off by sealing pad, and the flue gas among described return channel far-end cavity and described fume pipe stops to flow.
By the utility model embodiment, the purpose that can realize strengthening filter effect by the dust cover and the flexible filtering material of the foregoing description, and can clean eyeglass and filtration in the probe.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment 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, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Figure 1 shows that the utility model embodiment high humility low-concentration flue gas pollutant optical measurement probe system structural drawing;
Figure 2 shows that the concrete structure figure of the utility model filter probe structure;
Figure 3 shows that the cross-sectional structure figure of the utility model filter probe structure;
Figure 4 shows that the vertical view of the utility model filter probe structure.
Fig. 5 A is depicted as the structural drawing of probe calibration structure among the utility model embodiment;
Fig. 5 B is the partial enlarged drawing of Fig. 5 A;
Fig. 5 C is the local square section of a probe calibration structure part projection view among the utility model embodiment;
Figure 6 shows that the structural representation of a kind of flue gas probe calibration structure of the utility model embodiment and probe segment thereof;
A kind of probe cleaning structure of the utility model embodiment synoptic diagram that is depicted as shown in Figure 7;
Fig. 8 A is depicted as the utility model embodiment synoptic diagram utility model of cleaning structure at distal probe of popping one's head in;
Fig. 8 B is the local square section of a probe cleaning structure distal portions projection view among the utility model embodiment;
Fig. 9 A is depicted as the specific embodiment of a kind of cleaning structure of popping one's head in of the utility model embodiment;
Fig. 9 B is another visual angle synoptic diagram of Fig. 9 A cleaning structure;
Figure 10 shows that the return channel structural drawing of a kind of high humility low-concentration flue gas of the utility model pollutant optical measurement probe system;
Figure 11 shows that the utility model embodiment high humility low-concentration flue gas pollutant optical measurement probe system concrete structure figure.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, 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 utility model protection.
Be illustrated in figure 1 as the utility model embodiment high humility low-concentration flue gas pollutant optical measurement probe system structural drawing.
Wherein popping one's head in 101 is connected with filter probe structure 102, and described probe and described filter probe structure are all inserted in the flue and measured, and return channel 103 is connected with probe 101.
Gas in the flue is under the suction function that described return channel 103 produces, flow into described probe 101,101 pairs of described gases of described probe are measured, described filter probe structure 102 is socketed on outside the air hole of described probe 101, impurity in the described flue gas is filtered, comprise in the described filter probe structure 102 that flexible filtering material covers the air hole of described probe 101, described flexible material for example is the polytetrafluoroethylene film formation that one deck long fibre fabric and one deck have micropore, and perhaps the polytetrafluoroethylmaterial material that has micropore at described long fibre fabric face spraying one deck constitutes.
Wherein said impurity comprises the particle that mud drop, the quality in the flue gas is bigger etc.
The air hole of described probe 101 is positioned at the side that described probe 101 faces the flow of flue gas direction, flexible filtering material in the described filter probe structure 102 is positioned at the side that described air hole faces flue gas, the conduction hole of described filter probe structure 102 is positioned at the dorsal part that described probe 101 faces the flow of flue gas direction, can prevent the too much hole that blocks on described air hole and described filter probe structure 102 flexible materials of impurity in the flue gas on the flow of flue gas direction like this.
Described flexible material is around comprising the probe pipe, its surface is for having the polytetrafluoroethylene film of micropore, microporous membrane filtration falls particle and relatively large drop, the flue gas that contains than droplet enters into flexible filtering material inside, filtering is than droplet again for inner long fibre fabric, and the flue gas that enters the probe cavity by air hole only contains fine droplet at last.
As an embodiment of the present utility model, also has heating unit in described probe 101 inside, heat entering the inner flue gas of probe, preferable can be heated to 150 degrees centigrade, like this can be so that the smile droplet evaporation by the filter probe structure is a water vapor in the flue gas, to reduce drop to the interference in the light detection.
The flexible filtering material area of described filter probe structure 102 is greater than the air hole area of described probe 101, the gap that has a sealing between described filter probe structure 102 and the described probe 101, can avoid when flue gas enters air hole by described flexible filtering material, only using the flexible filtering material in the air hole outside like this, because seal clearance can enter described air hole then so that the more large-area flexible filtering material of flue gas utilization filters.
The utility model embodiment is in conjunction with the advantage of direct monitoring system, and the optical measurement probe directly inserts flue, in flue inside flue gas is handled, eliminate the interference of mud and water smoke drop, do not need pipeline after the processing, directly that the flue gas drainage is inner to probe, finish measurement in probe inside.
Processing to flue gas comprises filtration and heating, flue gas is by the outside flexible filtering material of probe, the bigger water smoke drop of particle, mud and particle diameter is by filtering, it is inner that flue gas enters probe, be heated to more than 150 ℃ by well heater in probe inside, effectively that particle diameter is less water smoke droplet evaporation is a water vapor, and water vapor can not cause interference to measuring.Heating has guaranteed that also flue-gas temperature maintains more than the acid dew point, can not produce acid liquid corrosion, can not cause SO
2The concentration loss of dissolving has eliminated the flue gas of particle, mud and water smoke drop and can accurately have been measured.
It is inner that ultraviolet lighting is injected probe, through flue gas, and by the anterior mirror reflects of probe, passes through flue gas once more, and the outer photoelectric device of being popped one's head in detects, and the light of turning back has passed through flue gas twice probe length, and light attenuation has increased twice, helps low concentration SO
2And NO
XMeasurement.
The probe inside of sealing has formed measuring cell, introduce flue gas by the probe front end during normal the measurement, flue gas returns flue through return channel, when needs are calibrated, can charge into calibrating gas from the probe rear end, calibrating gas is full of measuring cell, and flows into flue from the probe front end, finish calibration measurement, having solved open probe can't be in the problem of flue field calibration.
Be illustrated in figure 2 as the concrete structure figure of the utility model filter probe structure.
So wherein also illustrate the part of probe in order clearly to react the filter probe structure, probe mark is 201, air hole 202.
Comprise the dust cover 203 of filter probe structure in the accompanying drawings, can use metal material, to reach the sealing effect of filter probe structure to part except conduction hole, conduction hole 204, flexible filtering material 205, flue gas 206.
Described dust cover 203 is socketed on probe 201, and described conduction hole 204 is positioned on the described dust cover 203, and described flexible filtering material 205 is positioned at described air hole 202 and faces flue gas one side.
Described conduction hole 204 is positioned at the opposite side of described air hole 202, if described air hole 202 is faced the flow of flue gas direction, then described conduction hole 204 is positioned at the opposite side of flow of flue gas direction, as shown in Figure 3; Perhaps described air hole 202 is positioned at the top of flow of flue gas direction as shown in Figure 3, and described conduction hole 204 is positioned at the bottom of flow of flue gas direction; Perhaps described air hole 202 is positioned at the left side of flow of flue gas direction shown in Figure 3, and described conduction hole 204 is positioned at the right side of flow of flue gas direction; Or air hole 202 do not overlap with conduction hole 204 and gets final product, can reduce so as far as possible impurity such as mud in the flue gas too much enter the filter probe inside configuration.
Described flexible filtering material 205 can be apart from the gap 207 of described air hole 202 1 sealings, as shown in Figure 2, also can be as shown in Figure 4, the area of flexible filtering material 205 is greater than described air hole 202, and be covered in described air hole 202 upsides, be sealedly attached to described probe at the edge of flexible filtering material 205, make flue gas to enter in the air hole 202, can increase the utilization factor of flexible filtering material 205 like this by whole flexible filtering material 205 almost.
Dust cover and flexible filtering material by the foregoing description can be realized purpose for convenience detach, and can reduce the impurity that enters too many flue gas in the probe and block air hole, can also reduce the impurity that enters the probe flue gas and improve detection accuracy; In order to utilize flexible filtering material surface maximumly, flexible filtering material and air hole leave the gap, and any position, therefore flexible filtering material surface can both be filtered flue gas, and filtered smoke gas enters the air inlet window through the gap, arrive measuring cell inside.
Be depicted as among the utility model embodiment the structural drawing of probe calibration structure as Fig. 5 A, Fig. 5 B is the partial enlarged drawing of Fig. 5 A, and label has wherein just marked a part, is used for specifically indicating the parts of Fig. 5 A.Fig. 5 C is the local square section of a probe calibration structure part projection view among the utility model embodiment, and this Fig. 5 A to 5C also is the structural drawing of cleaning structure at proximal part of popping one's head among the utility model embodiment.
It among the figure part of flue gas probe, calibration structure comprises proximal lock female joint 501, gas circuit transition piece near-end pore 502, near-end relay tracheae 503, window eyeglass seat pore 504, proximal annular rim gas circuit groove 505, window eyeglass seat 506, window lens hole 507, window lens hole pore 508, eyeglass 509.
In probe, detect the right side of light from accompanying drawing and enter in the inner cavity of left side probe, carry out flue gas of the prior art and detect by eyeglass 509, window lens hole 507.
In the utility model embodiment, utilize the calibration gas of normal concentration, for example the SO of 10/1000000ths (10PPM)
2Gas enters the flue gas probe calibration structure from proximal lock female joint 501, described calibration gas enters gas circuit transition near-end pore 502 by described proximal lock female joint 501, enter near-end relay tracheae 503 and window eyeglass seat pore 504 again, described proximal annular rim gas circuit groove 505 is communicated with described window eyeglass seat pore 504, described calibration gas enters proximal annular rim gas circuit groove 505, described calibration gas enters the window lens hole pore 508 that is communicated with described proximal annular rim gas circuit groove 505 (shown in Fig. 5 C under the conducting of described proximal annular rim gas circuit groove 505, wherein illustrated window eyeglass seat pore 504, proximal annular rim gas circuit groove 505, window lens hole pore 508 and window lens hole 507), described window lens hole pore 508 is positioned at the side of described eyeglass 509 towards described probe cavity, this eyeglass 509 is connected with described window eyeglass seat 506, be fixed in described probe, described calibration gas flow to described eyeglass 509 surfaces by described window lens hole pore 508, described window lens hole 507 is over against the side of described eyeglass towards the probe cavity, and described calibration gas flowed and enters in the described probe cavity by described window lens hole 507 after the described eyeglass 509.
Described calibration gas can play the effect of cleaning eyeglass 509 surfaces and window lens hole 507 when flowing described eyeglass 509 and window lens hole 507 by window lens hole pore 508.
Along with described calibration gas constantly enters in the probe cavity by window lens hole 507, the pressure of calibration gas is greater than the flue gas pressures in the probe cavity, so the flue gas in the described probe cavity can be discharged described probe cavity, as shown in Figure 6, standard gas (calibration gas) enters the probe calibration structure as the direction of arrow among the figure by proximal lock female joint 501, enter in the probe cavity 601 from window lens hole 507, shown in the direction of arrow among the figure, the standard gas air hole 602 that original flue gas passes through to pop one's head in will popping one's head in is discharged probe cavitys 601, has a flexible filtering material 603 in described air hole 602 outsides, it is used for the flue gas that will enter probe air hole 602 is filtered, standard gas flowed out from air hole 602 contrary directions and can also clean described flexible filtering material 603 this moment, the dust cover 604 of described standard gas outside described probe, dust cover 604 is flowed out in conduction hole 605 backs that flow on the described dust cover 604.
When after a period of time, described standard gas has been full of probe cavity 601 inside, can begin to start flue gas detects, detect light and enter into probe cavity 601 inside by eyeglass (figure does not show), because the concentration of probe cavity 601 inner flue gases is known, the pick-up unit that can be connected with described probe according to known standard gas concentration adjustment, this pick-up unit can detect with optics flue gas of the prior art flue gas in the probe cavity is detected, do not repeat them here, described adjusting pick-up unit can for example be regulated the parameter of pick-up unit, make it consistent, thereby later again flue gas can be kept accuracy in detecting with standard gas parameter.
Be depicted as a kind of probe cleaning structure of the utility model embodiment synoptic diagram as shown in Figure 7.
Comprise far-end locknut joint 701, gas circuit transition piece far-end pore 702, far-end relay tracheae 703, far-end tracheae 704, probe cavity 705, window eyeglass seat 706, eyeglass 707.
The gases at high pressure that flow into above-mentioned proximal lock female joint flow into described far-end locknut joint 701 too, these gases at high pressure enter described gas circuit transition piece far-end pore 702 by described far-end locknut joint 701, enter into far-end tracheae 704 by far-end relay tracheae 703 then, the cylindrical wall of described far-end tracheae 704 is sealing, this far-end tracheae 704 enters into the other end of probe by described probe cavity 705, described gases at high pressure enter into the other end of described probe by described far-end tracheae 704, so that utilize described gases at high pressure to clean the interior parts of other end filtration of described probe.
Can clean the parts of distal probe and the cleaning structure among above-mentioned Fig. 5 A and Fig. 5 B by above-mentioned cleaning structure and combine and comprehensively to clean the probe internal part, make probe more accurate when detecting flue gas.
Be depicted as the utility model embodiment synoptic diagram of cleaning structure of popping one's head in as Fig. 8 A at distal probe.
Comprise dust cover 801, probe cavity 802, far-end tracheae 803, mirror unit pore 804, distal annular rim gas circuit groove 805, catoptron chamber 806, the aperture of a mirror 807, reflection seat 808, flexible filtering material 809, probe air hole 810.
Described dust cover 801 is socketed on an end of described probe, gases at high pressure as described in Figure 7 pass described probe cavity 802 by described far-end tracheae 803 and extend to described mirror unit pore 804, described distal annular rim gas circuit groove 805 is communicated with described mirror unit pore 804, described gases at high pressure enter into described catoptron chamber 806 by described distal annular rim gas circuit groove 805, catoptron (811) is positioned at described catoptron chamber 806, and place on the described reflection seat 808, described catoptron chamber 806 is communicated with the described aperture of a mirror 807, described gases at high pressure enter in the described probe cavity 802 by flowed described catoptron 811 and the aperture of a mirror 807 of described catoptron chamber 806, wherein above-mentioned mirror unit pore 804, distal annular rim gas circuit groove 805, catoptron chamber 806, the structural relation of the aperture of a mirror 807 and flexible filtering material 809 is shown in Fig. 8 B.Described gases at high pressure can clean the particle in described catoptron 811 surfaces and the aperture of a mirror 807, to reach the effect that improves reflecting effect.
After described gases at high pressure enter in the described probe cavity 802, air hole 810 backs by described probe are entered in the described dust cover 801 by described flexible filtering material 809, and discharge described dust cover by the conduction hole on the dust cover 801 (owing to accompanying drawing cross section reason is not shown), can carry out blowback to probe air hole 810, flexible filtering material 309 and dust cover 801 by flowing of above-mentioned gases at high pressure, reach cleaning on it particle or the purpose of other impurity.
Be depicted as the specific embodiment of a kind of cleaning structure of popping one's head in of the utility model embodiment as Fig. 9 A, Fig. 9 B is another visual angle synoptic diagram of Fig. 9 A cleaning structure.
Described gases at high pressure 901 enter into cleaning structure inside by far-end locknut joint 902 and proximal lock female joint 903, described gases at high pressure 901 are by proximal lock female joint 903 and corresponding gas circuit transition piece near-end pore, near-end relay tracheae, window eyeglass seat pore, proximal annular rim gas circuit groove and window lens hole carry out the blowback cleaning to the eyeglass of near-end, and discharge described near-end cleaning structure by window lens hole pore; Described gases at high pressure 901 are by the what corresponding gas circuit transition piece far-end pore of far-end locknut joint 902, the other end that far-end relay tracheae and far-end tracheae 907 enter into probe carries out the blowback cleaning to the conduction hole 906 of reflecting optics, flexible filtering material 904, dust cover 905 and dust cover, whole probe is cleaned realizing.In Fig. 9 B, also comprise well heater 909, this well heater 909 can be with the flue gas heating that enters in the probe cavity, preferable can be heated to 150 degrees centigrade, like this can be so that the smile droplet evaporation by the filter probe structure is a water vapor in the flue gas, to reduce drop to the interference in the light detection.Also comprise temperature sensor 908 in Fig. 9 A, the temperature data of this temperature sensor 908 in can the acquisition probe cavity is to control the heating of described well heater 909.
Be the return channel structural drawing of a kind of high humility low-concentration flue gas of the utility model pollutant optical measurement probe system as shown in figure 10.
Comprise pressurized air 1001, open pressurized air 1002, closes compression air 1003, cylinder 1004, valve rod 1005, return channel 1006, flue gas 1007 is opened throttling valve 1008, closes throttling valve 1009, piston 1010, pressure gas nozzle 1011, flue gas and fuel-air mixture compression body 1012, valve body 1013, sealing pad 1014, fume pipe 1015, tracheae 1016, return channel near-end cavity 1017, return channel far-end cavity 1018.
Described return channel can provide negative pressure to probe, thereby makes flue gas enter the probe cavity from flue, and described flue gas for example comprises SO
2
Described pressurized air 1001 by tracheae 1016 and pressure gas nozzle 1011 to return channel near-end cavity 1017 inject high pressure gases, described pressurized air 1001 is discharged described return channel by valve body 1013, and enter in the flue, when pressurized air has certain pressure and flow, because the Lavalle principle, the 1017 inner meetings of return channel near-end cavity produce the negative pressure that is lower than flue pressure.
When unlatching throttling valve 1008 is opened, opening pressurized air 1002 enters in the cylinder 1004 by described unlatching throttling valve 1008, the piston 1010 that this unlatching pressurized air 1002 promotes in the cylinder 1004 moves, described piston 1010 drives valve rod 1005 and moves with the sealing pad 1014 that is connected on the described valve rod 1005, described return channel near-end cavity 1017 and return channel far-end cavity 1018 are communicated with, described return channel near-end cavity 1017 gas inside pressure progressively equate with described return channel far-end cavity 1018 gas inside pressure, all less than the flue gas pressures of fume pipe 1015 inside that are connected with probe, this fume pipe 1015 is communicated with described probe cavity, flue gas in the flue is along with the negative pressure in the probe cavity enters in the probe cavity, and described flue gas enters into return channel far-end cavity 218 and return channel near-end cavity 1017 by fume pipe 1015, form flue gases and fuel-air mixture compression body 1012 by entering flue in the valve body 1013 with pressurized air 1001, probe just can obtain the interior flue gas of flue so that detect like this.
Close when opening throttling valve 1008, the described throttling valve 1009 of cutting out is when opening, described closes compression air 1003 enters into cylinder 1004 by closing throttling valve 1009, the piston 1010 that this closes compression air 1003 promotes in the cylinder 1004 moves, described piston 1010 drives valve rod 1005 and moves with the sealing pad 1014 that is connected on the described valve rod 1005, described return channel near-end cavity 1017 and return channel far-end cavity 1018 are because sealing pad 1014 partitions, gaseous tension in the described return channel far-end cavity 1018 equates with flue gas pressures in the fume pipe 1015 gradually, flue gas pressures and the return channel far-end cavity 1018 interior gaseous tensions of therefore popping one's head in the cavity equate, flue gas in the described flue no longer flows into the probe cavity, and described probe also just quits work.
Be the utility model embodiment high humility low-concentration flue gas pollutant optical measurement probe system concrete structure figure as shown in figure 11.
Aforesaid probe 1101 is inserted in the flue, described probe 1101 is fixed in the flue by flue mounting flange 1104, this probe 1101 is connected by flue mounting flange backflow fittings 1105 with return-flow structure 1103, produce negative pressure by return-flow structure 1103, make the cavity of probe 1101 produce negative pressure by this flue mounting flange backflow fittings 1105, flue gas is sucked in the cavity of probe 1101, described flue gas enters in the probe cavity by filtration 1102, the flue gas that return-flow structure 1103 sucks enters in the flue by flue gas flow sub 1106, well heater in the probe cavity heats flue gas, and by the analytical equipment that figure does not show the flue gas that sucks in the probe cavity is analyzed.
The work that can realize return channel by said structure with stop, simple in structure and smoke backflow is respond well, return channel is pressurized air control, no electric element, it is long to have a life-span, the characteristics of good seal.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is an embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. high humility low-concentration flue gas pollutant optical measurement probe system is characterized in that comprising:
Probe, filter probe structure, return channel;
Wherein probe is connected with the filter probe structure, and described probe and described filter probe structure are all inserted in the flue and measured, and return channel is connected with probe;
Gas in the flue is under the suction function that described return channel produces, flow into described probe, described probe is measured described gas, described filter probe structure is socketed on outside the air hole of described probe, impurity in the described flue gas is filtered, the flexible filtering material of described filter probe structure covers the air hole of described probe, and described flexible material is the polytetrafluoroethylene film formation that one deck long fibre fabric and one deck have micropore.
2. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 1 is characterized in that described filter probe structure comprises, dust cover, conduction hole, flexible filtering material;
Described dust cover is socketed on probe, and described conduction hole is positioned on the described dust cover, and described flexible filtering material is positioned at the side that described probe air hole faces flue gas.
3. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 2, it is characterized in that, the area of described flexible filtering material is greater than the area of described probe air hole, and the edge of described flexible filtering material and the described probe seal clearance of being separated by is connected.
4. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 2, it is characterized in that, described probe air hole is positioned at the side that described probe faces the flow of flue gas direction, and described conduction hole is positioned at the dorsal part that described probe faces the flow of flue gas direction.
5. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 1 is characterized in that having well heater in the described probe.
6. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 1, it is characterized in that, described probe also comprises the proximal lock female joint, gas circuit transition piece near-end pore, near-end relay tracheae, window eyeglass seat pore, proximal annular rim gas circuit groove, window eyeglass seat, window lens hole, window lens hole pore, eyeglass;
The calibration gas of normal concentration enters from the proximal lock female joint, described calibration gas enters gas circuit transition near-end pore by described proximal lock female joint, enter near-end relay tracheae and window eyeglass seat pore again, described proximal annular rim gas circuit groove is communicated with described window eyeglass seat pore, described calibration gas enters proximal annular rim gas circuit groove, described calibration gas enters the window lens hole pore that is communicated with described proximal annular rim gas circuit groove under the conducting of described proximal annular rim gas circuit groove, described window lens hole pore is positioned at the side of described eyeglass towards the probe cavity, this eyeglass is connected with described window eyeglass seat, described calibration gas flow to described lens surface by described window lens hole pore, described window lens hole is over against the side of described eyeglass towards the probe cavity, and described calibration gas flowed and enters in the described probe cavity by described window lens hole after the described eyeglass.
7. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 6 is characterized in that, also is connected with a pick-up unit with described probe, is used for the flue gas in the described probe cavity is detected.
8. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 6 is characterized in that described probe also comprises far-end locknut joint, gas circuit transition piece far-end pore, far-end relay tracheae, far-end tracheae;
Gases at high pressure enter from the proximal lock female joint, described gases at high pressure enter gas circuit transition near-end pore by described proximal lock female joint, enter near-end relay tracheae and window eyeglass seat pore again, described proximal annular rim gas circuit groove is communicated with described window eyeglass seat pore, described gases at high pressure enter proximal annular rim gas circuit groove, described gases at high pressure enter the window lens hole pore that is communicated with described proximal annular rim gas circuit groove under the conducting of described proximal annular rim gas circuit groove, described window lens hole pore is positioned at the side of described eyeglass towards the probe cavity, this eyeglass is connected with described window eyeglass seat, described gases at high pressure flow to described lens surface by described window lens hole pore, described window lens hole is over against the side of described eyeglass towards the probe cavity, and described gases at high pressure flow and clean through described eyeglass and window lens hole;
Described gases at high pressure flow into described far-end locknut joint too, these gases at high pressure enter described gas circuit transition piece far-end pore by described far-end locknut joint, enter into the far-end tracheae by far-end relay tracheae, described gases at high pressure enter into the other end of described probe by described far-end tracheae, and the parts of the described probe other end are cleaned.
9. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 8, it is characterized in that, the other end of described probe also comprises, mirror unit pore, distal annular rim gas circuit groove, the catoptron chamber, the aperture of a mirror, reflection seat, dust cover, flexible filtering material, the probe air hole;
Described gases at high pressure enter described mirror unit pore by described far-end tracheae, described distal annular rim gas circuit groove is communicated with described mirror unit pore, described gases at high pressure enter into described catoptron chamber by described distal annular rim gas circuit groove, described catoptron chamber is communicated with the described aperture of a mirror, described gases at high pressure flowed by described catoptron chamber and were positioned at catoptron on the described reflection seat, and these gases at high pressure enter in the probe cavity by the described aperture of a mirror; Described dust cover is socketed on described probe, after described gases at high pressure enter in the described probe cavity, by being entered in the described dust cover by described flexible filtering material behind the described probe air hole, and discharges described dust cover by the conduction hole on the dust cover.
10. high humility low-concentration flue gas pollutant optical measurement probe system according to claim 1 is characterized in that described return channel comprises, cylinder, valve rod, return channel, open throttling valve, close throttling valve, piston, the pressure gas nozzle, flue gas and fuel-air mixture compression body, valve body, sealing pad, fume pipe, tracheae, return channel near-end cavity, return channel far-end cavity;
Spray pressurized air by tracheae and pressure gas nozzle to return channel near-end cavity, described pressurized air is discharged described return-flow structure by valve body;
When the unlatching throttling valve is opened, opening pressurized air enters in the cylinder by described unlatching throttling valve, the piston that this unlatching pressurized air promotes in the cylinder moves, described piston drives valve rod and moves with the sealing pad that is connected on the described valve rod, described return channel near-end cavity and return channel far-end cavity are communicated with, flue gas in the described probe cavity enters into return channel far-end cavity and return channel near-end cavity by fume pipe, forms flue gas and fuel-air mixture compression body by entering flue in the valve body with pressurized air;
Close the described throttling valve of closing when opening when opening throttling valve, the closes compression air enters into cylinder by closing throttling valve, piston in this closes compression air push cylinder moves, described piston drives valve rod and moves with the sealing pad that is connected on the described valve rod, described return channel near-end cavity and return channel far-end cavity are cut off by sealing pad, and the flue gas among described return channel far-end cavity and described fume pipe stops to flow.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206546736U CN201926618U (en) | 2010-09-25 | 2010-12-10 | Optical measuring probe system for high humidity low concentration gas fume pollutants |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020539945 | 2010-09-25 | ||
| CN201020539945.8 | 2010-09-25 | ||
| CN2010206546736U CN201926618U (en) | 2010-09-25 | 2010-12-10 | Optical measuring probe system for high humidity low concentration gas fume pollutants |
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| CN201926618U true CN201926618U (en) | 2011-08-10 |
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| CN2010206546736U Expired - Lifetime CN201926618U (en) | 2010-09-25 | 2010-12-10 | Optical measuring probe system for high humidity low concentration gas fume pollutants |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749286A (en) * | 2012-07-31 | 2012-10-24 | 郭振铎 | Novel portable gas normal position monitor of flue gas and pipeline gas |
| CN104483284A (en) * | 2014-12-31 | 2015-04-01 | 苏州奥德克光电有限公司 | Optical system and detection device for flue gas monitor |
| CN104597209A (en) * | 2015-01-20 | 2015-05-06 | 重庆凌卡分析仪器有限公司 | In-situ integral-type gas sample treatment device |
| CN104968438A (en) * | 2012-09-14 | 2015-10-07 | 普莱梅克斯处理专家股份有限公司 | Humidity sensing system |
| CN105137500A (en) * | 2015-07-25 | 2015-12-09 | 皖江新兴产业技术发展中心 | Flue gas pretreatment device blocking monitoring device and method |
| CN107421952A (en) * | 2011-12-27 | 2017-12-01 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN112683833A (en) * | 2020-12-17 | 2021-04-20 | 北京新叶科技有限公司 | Flue gas monitoring device |
| CN113061835A (en) * | 2021-03-24 | 2021-07-02 | 鑫光热处理工业(昆山)有限公司 | Nitrogen potential monitoring device in heat treatment furnace |
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2010
- 2010-12-10 CN CN2010206546736U patent/CN201926618U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421952A (en) * | 2011-12-27 | 2017-12-01 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN102749286A (en) * | 2012-07-31 | 2012-10-24 | 郭振铎 | Novel portable gas normal position monitor of flue gas and pipeline gas |
| CN102749286B (en) * | 2012-07-31 | 2014-11-12 | 郭振铎 | Novel portable gas normal position monitor of flue gas and pipeline gas |
| CN104968438A (en) * | 2012-09-14 | 2015-10-07 | 普莱梅克斯处理专家股份有限公司 | Humidity sensing system |
| CN104483284A (en) * | 2014-12-31 | 2015-04-01 | 苏州奥德克光电有限公司 | Optical system and detection device for flue gas monitor |
| CN104597209A (en) * | 2015-01-20 | 2015-05-06 | 重庆凌卡分析仪器有限公司 | In-situ integral-type gas sample treatment device |
| CN105137500A (en) * | 2015-07-25 | 2015-12-09 | 皖江新兴产业技术发展中心 | Flue gas pretreatment device blocking monitoring device and method |
| CN112683833A (en) * | 2020-12-17 | 2021-04-20 | 北京新叶科技有限公司 | Flue gas monitoring device |
| CN112683833B (en) * | 2020-12-17 | 2023-05-30 | 北京新叶科技有限公司 | Flue gas monitoring device |
| CN113061835A (en) * | 2021-03-24 | 2021-07-02 | 鑫光热处理工业(昆山)有限公司 | Nitrogen potential monitoring device in heat treatment furnace |
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Owner name: BEIJING PEONY LIANYOU ENVIRONMENTAL PROTECTION TEC Free format text: FORMER NAME: BEIJING PEONY LIANYOU ELECTRONIC ENGINEERING LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Section 14 economic and Technological Development Zone of Beijing City 99 street 101111 Building No. 17 Patentee after: BEIJING PEONY LIANYOU ELECTRONIC ENGINEERING CO., LTD. Address before: Section 14 economic and Technological Development Zone of Beijing City 99 street 101111 Building No. 17 Patentee before: Beijing Peony Lianyou Electronic Engineering Co., Ltd. |
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