CN202404044U - Smoke monitoring system - Google Patents
Smoke monitoring system Download PDFInfo
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- CN202404044U CN202404044U CN2011205775836U CN201120577583U CN202404044U CN 202404044 U CN202404044 U CN 202404044U CN 2011205775836 U CN2011205775836 U CN 2011205775836U CN 201120577583 U CN201120577583 U CN 201120577583U CN 202404044 U CN202404044 U CN 202404044U
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- sampling pipe
- monitoring system
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- pipe
- filter membrane
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Abstract
The utility model provides a smoke monitoring system in a pipeline, which comprises a sampling probe arranged in a pipeline to be monitored, a primary sampling pipe, a static room, a first sucking pump, a first flowmeter, a secondary sampling pipe, nozzle movement equipment, an enrichment unit, an off-gas pipe, a second sucking pump, a second flowmeter, a measuring unit and a control circuit, wherein the sampling probe comprises a probe cover and a cone-shaped body, the cone-shaped body is arranged in the probe cover, and a smoke pipeline is arranged in the cone-shaped body; the inner diameter of the primary sampling pipe is the same with the inner diameter of a smoke pipeline inside the cone-shaped body, the primary sampling pipe is communicated with the cone-shaped body; the static room is arranged on the primary sampling pipe, and the inner diameter of the static room is greater than that of the primary sampling pipe; the first flowmeter is arranged on the primary sampling pipe; one end of the secondary sampling pipe extends into the static room, and the axial direction of the secondary sampling pipe is parallel to the axial direction of the primary sampling pipe connected with the static room; the nozzle movement equipment is used for moving one end of the secondary sampling pipe to press a filter membrane or depart from the surface of the filter membrane, the secondary sampling pipe and the off-gas pipe are respectively arranged on the upper side and the lower side of the filter membrane; the secondary sampling pipe is arranged on the off-gas pipe, the second flowmeter is arranged on the secondary sampling pipe or the off-gas pipe, and the output end of the secondary flowmeter is connected with the measuring unit; and the output end of the control circuit is connected with the nozzle movement equipment, a drive unit and the measuring unit. The smoke monitoring system has advantages of short detection time, high accuracy and the like.
Description
Technical field
The utility model relates to flue gas monitoring, particularly the monitoring system of metal or nonmetal content in the interior flue gas of pipe under test.
Background technology
The continuous flue gas monitoring device is the heavy metal in a kind of smoke emissioning pollution source or the monitoring system of nonmetal composition; This monitoring system mainly extracts the flue gas in chimney or the pipeline through the isokinetic sampling probe; Through the over-sampling pretreatment unit, realize the Non-Destructive Testing of flue gas heavy metal or nonmetal composition.For the monitoring of flue gas heavy metal or nonmetalloid content, general manual sampling thief is from chimney or pipeline collected specimens, and the sample of collection is sealed up for safekeeping and finished after treatment, takes back the laboratory and detects; Be limited to factor affecting such as site work condition, weather, personnel, manually quantity, the continuity of sampling are affected, and the sample number of collection is limited, can not reflect the pollutant emission situation of operating mode enterprise; In addition, different operating personnels can there are differences in sample collecting, experimental implementation process, can impact the measured value accuracy.
The utility model content
In order to solve the deficiency in the above-mentioned prior art scheme, the utility model provides the on-line monitoring system of high, round-the-clock, the harmless sample of a kind of automaticity.
The purpose of the utility model realizes through following technical scheme:
The monitoring system of flue gas in the pipeline, said monitoring system comprises:
Sampling probe, said sampling probe is arranged in the pipe under test, comprising: probe cover, cone-shaped body; Said cone-shaped body is arranged on probe cover inside, and inside is provided with exhaust gases passes;
A sampling pipe, the identical and connection of internal diameter of the exhaust gases passes of the internal diameter of a said sampling pipe and said cone-shaped body inside;
Quiescent chamber, said quiescent chamber are arranged on the said sampling pipe, and internal diameter is greater than a said sampling pipe;
First aspiration pump, said aspiration pump are arranged on the sampling pipe in downstream, said quiescent chamber;
First flow meter, said first flow meter are arranged on the said sampling pipe;
The double sampling pipe, an end of said double sampling pipe stretches in the said quiescent chamber, and axially parallel axial and a sampling pipe that is connected the quiescent chamber;
The nozzle sports equipment.The end that said nozzle sports equipment is used for mobile said double sampling pipe compresses filter membrane and leaves the filter membrane surface;
The enrichment unit, said enrichment unit comprises driving wheel, engaged wheel, filter membrane and driver element, said filter membrane is used for the filtering dust in flue gas;
Offgas duct, said double sampling pipe and offgas duct are in the both sides up and down of said filter membrane respectively;
Second aspiration pump, said second aspiration pump is arranged on the said offgas duct;
Second flowmeter, said second flowmeter are arranged on said double sampling pipe or the offgas duct, and output terminal connects measuring unit;
Measuring unit, said measuring unit are used for detecting the dust metal or the nonmetal content of enrichment on the said filter membrane;
Control circuit, the output terminal of said control circuit connect said nozzle sports equipment, driver element and measuring unit.
According to above-mentioned monitoring system, preferably, said measuring unit adopts X-ray fluorescence spectra analyser or cold steam atomic absorption spectroscopy appearance.
According to above-mentioned monitoring system, preferably, said first aspiration pump comprises gas passage, inlet channel, exhaust passage and source of the gas; Said inlet channel, exhaust passage are communicated with said gas pipeline, and connection place of said gas passage, inlet channel and exhaust passage is the breathing space; The interchannel angle of said inlet channel and gas is in (0; 90 ° ", gas passage is in
said inlet channel and is in
said source of the gas with angle between the exhaust passage and is communicated with said gas passage with the angle of exhaust passage.
According to above-mentioned monitoring system, preferably, the pressure of said breathing space is lower than atmospheric pressure.
According to above-mentioned monitoring system, preferably, when the flue gas flow rate in the said pipe under test was in 5-30m/s, the internal diameter of the gas passage in the said cone-shaped body was 30-60mm.
According to above-mentioned monitoring system, preferably, the openend of gas passage is in face of flue gas flow direction in the said cone-shaped body.
According to above-mentioned monitoring system, alternatively, said monitoring system also comprises companion's thermic devices, and said companion's thermic devices is used to accompany the flue gas in the said sampling pipe of heat.
Compared with prior art, the beneficial effect that the utlity model has is:
1, need not artificial sample, n.s. is preserved transportation, and sample loss is few.The integrated degree of system is high, not influenced by weather, human factor, can realize round-the-clock sampling, and collected specimens quantity is many, can grasp the pollutant emission situation of current monitoring chimney comprehensively.
2, adopt the analyser of Non-Destructive Testing, sample need not complex process such as chemical digesting and can detect, and Measuring Time is short; Ability Rapid Realization sample detection; Measured value is uploaded to factory and higher level supervision department in real time, for the emission behaviour that exceeds standard, can carry out rapidly effectively supervision.
3, tradition is cleared up detection method, and sample is disposable, and nothing retains; Adopt the analyser of Non-Destructive Testing, sample can remain, and is beneficial to sample comparison and data check.
Description of drawings
With reference to accompanying drawing, the disclosure of the utility model will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used to illustrate the technical scheme of the utility model, and are not to be intended to the protection domain of the utility model is constituted restriction.Among the figure:
Fig. 1 is the basic block diagram according to the monitoring system of the utility model embodiment 1;
Fig. 2 is the basic block diagram according to the sampling probe of the utility model embodiment 1;
Fig. 3 is the basic block diagram according to first aspiration pump of the utility model embodiment 1;
Fig. 4 is the basic block diagram according to the enrichment unit of the utility model embodiment 1;
Fig. 5 is the process flow diagram according to the monitoring method of the utility model embodiment 1.
Embodiment
Fig. 1-5 and following declarative description the optional embodiment of the utility model how to implement with instruction those skilled in the art and reproduce the utility model.In order to instruct the utility model technical scheme, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification or the replacement that are derived from these embodiments will be in the scopes of the utility model.Those skilled in the art should understand that following characteristics can make up to form a plurality of modification of the utility model in every way.Thus, the utility model is not limited to following optional embodiment, and is only limited claim and their equivalent.
Embodiment 1:
Fig. 1 has schematically provided the basic block diagram of the monitoring system of flue gas in the pipeline of the utility model embodiment.As shown in Figure 1, said monitoring system comprises:
Preferably, when the flue gas flow rate in the said pipe under test was in 5-30m/s, the internal diameter of the gas passage in the said cone-shaped body was 30-60mm.
A sampling pipe 3, the identical and connection of internal diameter of the exhaust gases passes 22 of the internal diameter of a said sampling pipe 3 and said cone-shaped body inside, thereby with the flue gas introduction pipe in the pipe under test 1.
Alternatively, companion's thermic devices 4 is set on a said sampling pipe, like the PTC heating tape, said companion's thermic devices it will be apparent to one skilled in the art that it is the prior art of understanding easily, repeats no more at this.
Preferably, said first aspiration pump 11 adopts following structure:
Fig. 3 has schematically provided the basic block diagram of first aspiration pump, and is as shown in Figure 3, and said first aspiration pump has gas passage 111, inlet channel 112, exhaust passage 113 and source of the gas 14; Said inlet channel 112, exhaust passage 113 are communicated with said gas pipeline 111, and connection place of said gas passage 111, inlet channel 112 and exhaust passage 113 is breathing spaces 114; The angle that said inlet channel 112 and gas passage are 111 is in (0; 90 ° ", gas passage 111 is in
said inlet channel 112 and is in
said source of the gas 14 with the angle of 113 of exhaust passages and is communicated with said gas passage 111 with the angle of exhaust passage 113.First aspiration pump 11 in the course of the work, the pressure of breathing space 114 will be lower than atmospheric pressure, thereby not only the flue gas in the pipe under test 1 is extracted out, also need when double sampling pipe 6 one ends are lifted away from filter membrane double sampling pipe 6 in residual flue gas take away.
Double sampling pipe 6, an end of said double sampling pipe 6 stretches in the said quiescent chamber 5, and the axially parallel of axial and a sampling pipe 3 that is connected quiescent chamber 5, thereby makes sampling pipe 3 interior flue gases get in the double sampling pipe 6 according to original flow direction.
The end that nozzle sports equipment, said nozzle sports equipment are used for mobile said double sampling pipe compresses filter membrane and leaves the filter membrane surface; Said nozzle sports equipment both can adopt manual work, can also adopt the moving track of stepper motor.
Offgas duct, said double sampling pipe and offgas duct are in the both sides up and down of said filter membrane respectively;
Control circuit, the output terminal of said control circuit connect said nozzle sports equipment, driver element and measuring unit, are used to control the moving of said double sampling Guan Yiduan, the rotation of driving wheel, the work of measuring unit.
Fig. 5 has schematically provided the process flow diagram of the flue gas monitoring method of the utility model embodiment.As shown in Figure 5, said monitoring method may further comprise the steps:
(A1) sampling step: an end of double sampling pipe compresses filter membrane; Under the suction of first aspiration pump; Flue gas in the pipe under test gets into sampling probe with the flow velocity that is same as in the pipe under test, gets in the quiescent chamber of internal diameter greater than a sampling pipe through a sampling pipe afterwards;
Alternatively, said sampling probe is arranged in the pipe under test, comprising: probe cover, cone-shaped body; Said cone-shaped body is arranged on probe cover inside, and inside is provided with exhaust gases passes.
Preferably, said first aspiration pump comprises gas passage, inlet channel, exhaust passage and source of the gas; Said inlet channel, exhaust passage are communicated with said gas pipeline, and connection place of said gas passage, inlet channel and exhaust passage is the breathing space; The interchannel angle of said inlet channel and gas is in (0; 90 ° ", gas passage is in
said inlet channel and is in
said source of the gas with angle between the exhaust passage and is communicated with said gas passage with the angle of exhaust passage.First aspiration pump in the course of the work, the pressure of breathing space will be lower than atmospheric pressure, thereby not only the flue gas in the pipe under test is extracted out, also needs when double sampling Guan Yiduan is lifted away from filter membrane, flue gas residual in the double sampling pipe is taken away.
Under the suction of second aspiration pump; No. one time the interior flue gas of sampling pipe gets into and extend into the double sampling pipe in the quiescent chamber; Dust in flue gas is utilized second flowmeter to record the flue gas flow that in filtration time, passes through the double sampling pipe, and is sent to measuring unit by membrane filtration and accumulation afterwards;
(A2) measuring process: an end of said double sampling pipe is lifted away from filter membrane; Said filter membrane moves; Measuring unit is measured metal or nonmetallic content in the dust of accumulating on the said filter membrane, obtains metal or nonmetallic content in the interior flue gas of pipe under test according to the flue gas flow that receives again; Said first aspiration pump works on, thereby the flue gas in the said double sampling pipe is taken away, has avoided the residual flue gas effusion in the double sampling pipe and has corroded various parts, like enrichment unit, measuring unit etc.
The benefit that reaches according to the utility model embodiment 1 is: being same as in the pipe under test flue gas flow rate sampling flue gas, and companion's heat the sampling flue gas, avoided the distortion of measuring; In measuring process, first aspiration pump works on, and has prevented that the residual flue gas in the double sampling pipe from overflowing and parts such as corrosion enrichment unit, measuring unit.
Embodiment 2:
Monitoring system and method application examples in the flue gas monitoring in the garbage burning factory chimney according to the utility model embodiment 1.The flow velocity of the flue gas in the said chimney is 20m/s, contains metal, nonmetalloids such as mercury, lead, chromium, arsenic.
In this application examples, the internal diameter of sampling probe inner gas passage is 50mm, and is identical with the internal diameter of a sampling pipe.A said sampling pipe crooked less also is that bending angle is obtuse angle or right angle, and is provided with the PTC heating tape, so that the flue gas in sampling pipe of companion's heat.The employing bend pipe of quiescent chamber, internal diameter is 60mm, slows down, mixes after making flue gas in sampling pipe get into the quiescent chamber.Angle in first aspiration pump between inlet channel and exhaust passage, gas passage is respectively 180 degree, 90 degree, and source of the gas adopts pressurized air.Measuring unit adopts the X-ray fluorescence spectra analyser, and concrete structure and measuring principle are the state of the art, repeat no more at this.Second aspiration pump adopts membrane pump.The nozzle sports equipment adopts the track of stepper motor and driving thereof, and an end of double sampling pipe is arranged on the said track.As shown in Figure 4, be provided with sheath 70, nozzle 72 at an end of double sampling pipe, be provided with O-ring seal 71 between the two.The input end of said stepper motor, driver element, measuring unit connects control circuit, sends instruction by control circuit, thereby makes in sampling step; Filter membrane is static, and an end of double sampling pipe compresses filter membrane, and in measuring process; One end of said double sampling pipe is lifted away from filter membrane; And driving wheel drives filter membrane and moves certain distance, and makes said analyser work, with metal, nonmetal content in the dirt of measuring enrichment on the said filter membrane.
Exemplarily provided the situation of flue gas monitoring in the garbage burning factory chimney in the foregoing description; Certainly can also be applied in other field; As: thermal power plant, metallurgical works etc.; Measuring principle is same as the previously described embodiments, and embodiment is to understand easily for a person skilled in the art, and on the foregoing description basis, need not pay creative work and can obtain.
Claims (7)
1. the monitoring system of flue gas in the pipeline, said monitoring system comprises:
Sampling probe, said sampling probe is arranged in the pipe under test, comprising: probe cover, cone-shaped body; Said cone-shaped body is arranged on probe cover inside, and inside is provided with exhaust gases passes;
A sampling pipe, the identical and connection of internal diameter of the exhaust gases passes of the internal diameter of a said sampling pipe and said cone-shaped body inside;
Quiescent chamber, said quiescent chamber are arranged on the said sampling pipe, and internal diameter is greater than a said sampling pipe;
First aspiration pump, said aspiration pump are arranged on the sampling pipe in downstream, said quiescent chamber;
First flow meter, said first flow meter are arranged on the said sampling pipe;
The double sampling pipe, an end of said double sampling pipe stretches in the said quiescent chamber, and axially parallel axial and a sampling pipe that is connected the quiescent chamber;
The end that nozzle sports equipment, said nozzle sports equipment are used for mobile said double sampling pipe compresses filter membrane and leaves the filter membrane surface;
The enrichment unit, said enrichment unit comprises driving wheel, engaged wheel, filter membrane and driver element thereof, said filter membrane is used for the filtering dust in flue gas;
Offgas duct, said double sampling pipe and offgas duct are in the both sides up and down of said filter membrane respectively;
Second aspiration pump, said second aspiration pump is arranged on the said offgas duct;
Second flowmeter, said second flowmeter are arranged on said double sampling pipe or the offgas duct, and output terminal connects measuring unit;
Measuring unit, said measuring unit are used for detecting the dust metal or the nonmetal content of enrichment on the said filter membrane;
Control circuit, the output terminal of said control circuit connect said nozzle sports equipment, driver element and measuring unit.
2. monitoring system according to claim 1 is characterized in that: said measuring unit adopts the X-ray fluorescence spectra analyser.
3. monitoring system according to claim 1 is characterized in that: said first aspiration pump comprises gas passage, inlet channel, exhaust passage and source of the gas; Said inlet channel, exhaust passage are communicated with said gas pipeline, and connection place of said gas passage, inlet channel and exhaust passage is the breathing space; The interchannel angle of said inlet channel and gas is in (0; 90 ° ", gas passage is in
said inlet channel and is in
said source of the gas with angle between the exhaust passage and is communicated with said gas passage with the angle of exhaust passage.
4. monitoring system according to claim 3 is characterized in that: the pressure of said breathing space is lower than atmospheric pressure.
5. monitoring system according to claim 1 is characterized in that: when the flue gas flow rate in the said pipe under test was in 5-30m/s, the internal diameter of the gas passage in the said cone-shaped body was 30-60mm.
6. monitoring system according to claim 1 is characterized in that: the openend of gas passage is in face of flue gas flow direction in the said cone-shaped body.
7. monitoring system according to claim 1 is characterized in that: said monitoring system also comprises companion's thermic devices, and said companion's thermic devices is used to accompany the flue gas in the said sampling pipe of heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205775836U CN202404044U (en) | 2011-12-31 | 2011-12-31 | Smoke monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205775836U CN202404044U (en) | 2011-12-31 | 2011-12-31 | Smoke monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404044U true CN202404044U (en) | 2012-08-29 |
Family
ID=46701684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205775836U Expired - Lifetime CN202404044U (en) | 2011-12-31 | 2011-12-31 | Smoke monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404044U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344591A (en) * | 2013-06-28 | 2013-10-09 | 聚光科技(杭州)股份有限公司 | Flue gas denitrification monitoring system and method |
| CN103674631A (en) * | 2014-01-08 | 2014-03-26 | 国家电网公司 | Dual-pump flow-equalizing flue sampling device and sampling method |
| CN105866153A (en) * | 2016-03-31 | 2016-08-17 | 北方工业大学 | Atmosphere heavy metal detection system |
| CN107101853A (en) * | 2017-05-12 | 2017-08-29 | 连云港市亿吉皮件厂 | Vacuum core sampler |
| US11151851B1 (en) | 2020-05-22 | 2021-10-19 | Carrier Corporation | Trace heating base for heating detectors |
| CN113514207A (en) * | 2021-06-15 | 2021-10-19 | 杭州谱育科技发展有限公司 | Gas detection system and detection method thereof |
-
2011
- 2011-12-31 CN CN2011205775836U patent/CN202404044U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344591A (en) * | 2013-06-28 | 2013-10-09 | 聚光科技(杭州)股份有限公司 | Flue gas denitrification monitoring system and method |
| CN103344591B (en) * | 2013-06-28 | 2015-11-25 | 聚光科技(杭州)股份有限公司 | Denitrating flue gas monitoring system and method |
| CN103674631A (en) * | 2014-01-08 | 2014-03-26 | 国家电网公司 | Dual-pump flow-equalizing flue sampling device and sampling method |
| CN105866153A (en) * | 2016-03-31 | 2016-08-17 | 北方工业大学 | Atmosphere heavy metal detection system |
| CN107101853A (en) * | 2017-05-12 | 2017-08-29 | 连云港市亿吉皮件厂 | Vacuum core sampler |
| US11151851B1 (en) | 2020-05-22 | 2021-10-19 | Carrier Corporation | Trace heating base for heating detectors |
| CN113514207A (en) * | 2021-06-15 | 2021-10-19 | 杭州谱育科技发展有限公司 | Gas detection system and detection method thereof |
| CN113514207B (en) * | 2021-06-15 | 2024-04-09 | 杭州谱育科技发展有限公司 | Gas detection system and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |