CN204594852U - A kind of environmental protection test device be applied in minimum discharge - Google Patents
A kind of environmental protection test device be applied in minimum discharge Download PDFInfo
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- CN204594852U CN204594852U CN201520367618.1U CN201520367618U CN204594852U CN 204594852 U CN204594852 U CN 204594852U CN 201520367618 U CN201520367618 U CN 201520367618U CN 204594852 U CN204594852 U CN 204594852U
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- Prior art keywords
- sampling
- flue gas
- environmental protection
- metal probe
- minimum discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a kind of environmental protection test device be applied in minimum discharge, it is characterized in that on the horizontal flue cross section of chimney entrance in each sampled point of arranged in arrays, form multi-point sampling on chimney entrance horizontal flue cross section, obtain the sampling flue gas on variant sampled point; Sampling flue gas on variant sampled point imports sampling channel jointly respectively by each sampling pipe, metal probe net is set in sampling channel, the collision current signal that metal probe produces on the net utilizes sensor to amplify, be resent to microprocessor (to carry out signal transacting, obtain the test data of particle quality; Output flue gas utilization flue gas analyzer through metal probe net is obtained in flue gas about gaseous contaminant SO
2and NO
xconcentration and the test data of flue gas volume; Digital control unit is set digital processing is carried out for test data.The utility model can avoid steam in flue gas to the interference of test result, can be widely used in the CEMS comparison monitoring of thermal power plant's low-concentration flue gas.
Description
Technical field
The utility model relates to a kind of environmental protection test device be applied in minimum discharge, and after being applied to coal-burning power plant's " minimum discharge " transformation, CEMS comparing is supervised.
Background technology
Coal-burning power plant SO
2, NO
xwith the discharge of particle be cause that acid rain in air environmental pollution constantly aggravates, photo-chemical smog takes place frequently, the major reason of depletion of the ozone layer and large area haze.Along with the continuous reinforcement of environmental consciousness, need to improve watch-dog and meet the requirement of ultra-low concentration discharge Monitoring Performance, the Gas Parameters under precise monitoring minimum discharge state.
National policy will have strict requirement for electricity power enterprise's pollutant emission, print and distribute No. (2013) 37, the notice promulgated by the State Council " prevention and control of air pollution action plan " of prevention and control of air pollution action plan continue State Council after, intensively again put into effect a series of environmental protection policy: " Thermal generation unit environmental protection electricity price and environmental protection facility run supervisory method " (send out and change No. (2014) 536, price) clear and definite individual event Pollutant emission concentration by the hour average is examined.National Development and Reform Committee, Environmental Protection Department, National Energy Board combine print and distribute in " coal electricity energy-saving and emission-reduction upgrading and transformation action plan (2014 ~ 2020) " (send out and change No. (2014) 2093, the energy) specify newly-built Thermal generation unit Air Pollutant Emission concentration substantially reach gas turbine group emission limit (namely under benchmark oxygen content 6% condition, particle, SO
2and NO
xconcentration of emission respectively not higher than 10,35,50mg/m
3), after existing Transformation of Unit basic close to or reach gas turbine group emission limit.
At present, had in this area multiple for measuring gaseous contaminant (SO in flue gas
2, NO
x) and the method for particle.As adopted gravimetric method (GB/T16157-1996 " in Concentration in Fixed Pollutants Source, particle measures and the gaseous contaminant method of sampling ") to monitor particle concentration, glass fiber filter cylinder is sampled, laboratory weight method etc.But existing sample mode exists following not enough: one is hand sampling gravimetric method is be greater than 20mg/m based on granular material discharged concentration
3carry out sampling analysis; Two is along with the particle concentration of pollutant emission is more and more lower, requires that the sampling time is long, and filter cylinder is generally glass fibre and sprays from level to level and form, when long-time air-flow causes filter cylinder weightlessness itself through the glass fibre of filter cylinder can be caused to run off; Three are cancellations of GGH and increase the humidity of flue gas that brings after wet-esp and increases, cause filter cylinder easy breakage in the process of taking to the moistening of filter cylinder.
At present at coal-burning power plant gaseous contaminant (SO
2and NO
x) and particle CEMS data monitoring in remain adopt single measuring point sampling mode.Environmental protection equipment is because the reason of geometric parameter design, when reserved lack of space causes follow-up environmental transformation, bend more or environmental protection measuring point distance environmental protection equipment outlet equivalent multiple diameter is inadequate, and in flue, flow distribution evenness is poor, to cause in flue gaseous contaminant (SO in flue gas
2and NO
x) and particle concentration from top to bottom or from left to right difference is very large, therefore the sampling mode of this single measuring point can not reflect the actual conditions on whole flue xsect.
Utility model content
The utility model is the weak point for avoiding existing for above-mentioned all technology, a kind of environmental protection test device be applied in minimum discharge is provided, by increasing multiple sampled point, sampling gun arranges multiple sampling mouth, form gridding method to sample simultaneously, introducing metal probe net, by micro-charge particle induction technology, particle and probe collision strength are converted into " Weak current signal ", carrying out gaseous contaminant (SO by accessing flue gas analyzer again after filtration
2and NO
x) and O
2analyze, ensure that measurement data characterizes whole section situation, more close to SO
2, NO
xwith the actual discharge concentration of particle, avoid the drawback of classic method, after being widely used in thermal power plant's minimum discharge transformation, the CEMS comparison of low-concentration flue gas is monitored simultaneously.
The utility model is that technical solution problem adopts following technical scheme:
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is:
In each sampled point of arranged in arrays on the horizontal flue cross section of chimney entrance, in described each sampled point, insert sampling gun and keep sampling gun to be vertical by fixed plug, form multi-point sampling on chimney entrance horizontal flue cross section, obtain the sampling flue gas on variant sampled point;
Sampling flue gas on described variant sampled point imports sampling channel jointly respectively by each sampling pipe, metal probe net is set in described sampling channel, described metal probe is online, in flue gas, particle and metal probe net collide to produce and collide current signal, the intensity of described collision current signal to collide the amounts of particles of popping one's head in a period of time and be directly proportional, described collision current signal access sensor carries out signal amplification, be resent to microprocessor and carry out signal transacting, obtain the test data of particle quality;
Output flue gas through described metal probe net is delivered to flue gas analyzer by aspiration pump after filter, utilizes described flue gas analyzer to obtain in flue gas about gaseous contaminant SO
2and NO
xconcentration and the test data of flue gas volume;
Digital control unit is set, receives the test data of microprocessor about particle quality by described digital control unit, and receive flue gas analysis gateway gaseous contaminant SO in flue gas
2and NO
xconcentration and the test data of flue gas volume carry out digital processing.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: on same sampling gun, four sampling mouths are axially provided with at equal intervals along sampling gun, for obtaining the flue gas of same observation station position different depth, realizing gridding method and sampling simultaneously.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: on described each sampling pipe, arrange flue gas adjust flux meter respectively, for obtaining the flow signal of each sampling gun, ensures that each sampled point flow is consistent with isokinetic sampling.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: the entrance arranging described sampling channel is bell mouth shape, and sampling flue gas enters in the sampling channel of undergauge after hydraucone imports.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: in described sampling channel, the downstream being positioned at filtrator arranges the second metal probe net, the output signal of described second metal probe net is amplified by sensor, is resent to microprocessor for implementing blank test.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: described sampling pipe is the steel pipe that rush-resisting material is made, the outside winding electric heater unit of steel pipe, sampling flue gas is maintained, at the outer setting heat insulation sheath of described electric heater unit in the temperature of sampling pipe.
The design feature of the environmental protection test device that the utility model is applied in minimum discharge is also: described fixed plug is for material with the organic silica gel of abrasion-resistant clear.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model reasonable layout sampled point formation gridding method is sampled simultaneously, and institute's collected specimens is more representative;
2, the utility model arranges metal probe net, in flue gas, particle and metal probe net collide and produce small " collision current signal ", particle qualitative data is converted to through sensor and microprocessor, coordinate and implement blank assay, effectively avoid gravimetric method (filter cylinder, filter membrane lose) defect, accomplish particle concentration Accurate Measurement in flue gas.
3, the utility model arranges the second metal probe net at filter downstream, obtains micro-current value, for implementing the blank assay of particle quality, can effectively avoid flue gas flow rate and other factors on the impact of metal probe net.
4, the utility model arranges flowmeter in each sampling gun outlet, for regulation and control flow, guarantees each sampled point isokinetic sampling, thus closer to smoke condition actual in flue.
5, the whole sampling pipe of the utility model is the steel pipe that rush-resisting material is made, and the outer winding electric heater unit of steel pipe, the insulation of being made up of insulation material around the home is outside outer.Flue-gas temperature in steel pipe is effectively kept, avoids steam to particle and gaseous contaminant (SO
2and NO
x) impact of concentration determination, for effectively monitoring provides guarantee.
6, the expense needed for the utility model device, far below the external instrument of costliness, can directly read particle in flue gas, O
2, gaseous contaminant (SO
2and NO
x) concentration, loaded down with trivial details lab analysis and calculating can be avoided.After can being widely used in thermal power plant's minimum discharge transformation, the CEMS comparison of low-concentration flue gas is monitored, for environmental protection supervisor brings conveniently, for the energy-saving and emission-reduction work of power plant extends efficient help.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is sampling gun structural representation in the utility model;
Number in the figure: 1 digital control unit, 2 flue gas analyzers, 3 aspiration pumps, 4 filtrators, 5 microprocessors, 6 sensors, 7 metal probe nets, 7a second metal probe net, 8 sampling guns, 9 fixed plugs, 10 horizontal flue cross sections, 11 flue gas adjust flux meters, 12 sampling pipes, 13 sampling mouths, 14 sampling channels.
Embodiment
The version being applied in the environmental protection test device in minimum discharge in the present embodiment is:
In each sampled point of arranged in arrays on the horizontal flue cross section 10 of chimney entrance, in each sampled point, insert sampling gun 8 and keep sampling gun 8 to be vertical by fixed plug 9, form multi-point sampling on chimney entrance horizontal flue cross section 10, obtain the sampling flue gas on variant sampled point; Sampling flue gas on variant sampled point imports sampling channel 14 jointly respectively by each sampling pipe 12, metal probe net 7 is set in sampling channel 14, on metal probe net 7, in flue gas, particle and metal probe net collide to produce and collide current signal, intensity and a period of time of collision current signal be interior collides the amounts of particles of popping one's head in and is directly proportional, collision current signal access sensor 6 carries out signal amplification, be resent to microprocessor 5 and carry out signal transacting, obtain the test data of particle quality; Output flue gas through metal probe net 7 is delivered to flue gas analyzer 2 by aspiration pump 3 after filter 4, utilizes flue gas analyzer 2 to obtain in flue gas about gaseous contaminant SO
2and NO
xconcentration and the test data of flue gas volume; Digital control unit 1 is set, receives the test data of microprocessor 5 about particle quality by digital control unit 1, and receive flue gas analyzer 2 about gaseous contaminant SO in flue gas
2and NO
xconcentration and the test data of flue gas volume carry out digital processing.
As depicted in figs. 1 and 2, in concrete enforcement, in concrete enforcement, corresponding vibrational power flow also comprises:
On same sampling gun 8, be axially provided with four sampling mouths 13 at equal intervals along sampling gun, sampling mouth 13 protrudes from out the sidewall of sample rifle 8 in level, for obtaining the flue gas of same observation station position different depth, realizing gridding method and sampling simultaneously.Each sampling pipe 12 arranges flue gas adjust flux meter 11 respectively, and for obtaining the flow signal of each sampling gun 8, and the flow controlling each sampling gun 8 is consistent, ensures that each sampled point flow is consistent.
The entrance arranging sampling channel 14 is bell mouth shape, and sampling flue gas enters in the sampling channel 12 of undergauge after hydraucone imports; In sampling channel 14, the downstream being positioned at filtrator 4 arranges the second metal probe net 7a, and the output signal of the second metal probe net 7a is amplified by sensor 6, is resent to microprocessor 5 for implementing blank test.
The steel pipe that sampling pipe 12 is made for rush-resisting material, the outside winding electric heater unit of steel pipe, makes sampling flue gas be maintained in the temperature of sampling pipe 12, at the outer setting heat insulation sheath of electric heater unit.
Fixed plug 9 is for material with the organic silica gel of abrasion-resistant clear.
During use, the flue gas that each sampling gun 8 gathers is connected to sampling channel 14 by sampling pipe 12, start aspiration pump 3 to sample, particle obtains " concentrating " at the hydraucone place of sampling channel, and collide with the probe in metal probe net 7 on metal probe net 7 and produce " collision current signal ", the intensity of signal to collide the amounts of particles of popping one's head in certain hour and is directly proportional, this signal is converted to particle qualitative data through sensor 6 amplification and microprocessor 5 and exports digital control unit 1 to.
Flue gas exports through metal probe net 7, removes particle in flue gas after filter 4, again enters the second metal probe net 7a, for doing blank test, being delivered to flue gas analyzer 2 finally by aspiration pump 3, carrying out O in flue gas
2, SO
2, NO
xconcentration and flue gas volume measure, and are finally discharged in air.
In digital control unit 1, computing is carried out to the data gathered, calculate and obtain test data.
Claims (7)
1. be applied in the environmental protection test device in minimum discharge, it is characterized in that:
Upper in each sampled point of arranged in arrays in the horizontal flue cross section (10) of chimney entrance, in described each sampled point, insert sampling gun (8) and keep sampling gun (8) to be vertical by fixed plug (9), form the upper multi-point sampling of chimney entrance horizontal flue cross section (10), obtain the sampling flue gas on variant sampled point;
Sampling flue gas on described variant sampled point imports sampling channel (14) jointly respectively by each sampling pipe (12), metal probe net (7) is set in described sampling channel (14), on described metal probe net (7), in flue gas, particle and metal probe net collide to produce and collide current signal, the intensity of described collision current signal to collide the amounts of particles of popping one's head in a period of time and be directly proportional, described collision current signal access sensor (6) carries out signal amplification, be resent to microprocessor (5) and carry out signal transacting, obtain the test data of particle quality,
Output flue gas through described metal probe net (7) is delivered to flue gas analyzer (2) by aspiration pump (3) after filter (4), utilizes described flue gas analyzer (2) to obtain in flue gas about gaseous contaminant SO
2and NO
xconcentration and the test data of flue gas volume;
Digital control unit (1) is set, receives the test data of microprocessor (5) about particle quality by described digital control unit (1), and receive flue gas analyzer (2) about gaseous contaminant SO in flue gas
2and NO
xconcentration and the test data of flue gas volume carry out digital processing.
2. the environmental protection test device be applied in minimum discharge according to claim 1, it is characterized in that: on same sampling gun (8), four samplings mouth (13) are axially provided with at equal intervals along sampling gun, for obtaining the flue gas of same observation station position different depth, realizing gridding method and sampling simultaneously.
3. the environmental protection test device be applied in minimum discharge according to claim 1, it is characterized in that: on described each sampling pipe (12), flue gas adjust flux meter (11) is set respectively, for obtaining the flow signal of each sampling gun (8), ensure that each sampled point flow is consistent with isokinetic sampling.
4. the environmental protection test device be applied in minimum discharge according to claim 1, it is characterized in that: the entrance arranging described sampling channel (14) is bell mouth shape, sampling flue gas enters in the sampling channel (14) of undergauge after hydraucone imports.
5. the environmental protection test device be applied in minimum discharge according to claim 1, it is characterized in that: in described sampling channel, the downstream being positioned at filtrator (4) arranges the second metal probe net (7a), the output signal of described second metal probe net (7a) is amplified by sensor (6), is resent to microprocessor (5) for implementing blank test.
6. the environmental protection test device be applied in minimum discharge according to claim 1, it is characterized in that: the steel pipe that described sampling pipe (12) is made for rush-resisting material, the outside winding electric heater unit of steel pipe, sampling flue gas is maintained, at the outer setting heat insulation sheath of described electric heater unit in the temperature of sampling pipe (12).
7. the environmental protection test device be applied in minimum discharge according to claim 1, is characterized in that: described fixed plug (9) is for material with the organic silica gel of abrasion-resistant clear.
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|---|---|---|---|
| CN201520367618.1U CN204594852U (en) | 2015-05-29 | 2015-05-29 | A kind of environmental protection test device be applied in minimum discharge |
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|---|---|---|---|
| CN201520367618.1U CN204594852U (en) | 2015-05-29 | 2015-05-29 | A kind of environmental protection test device be applied in minimum discharge |
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Cited By (12)
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|---|---|---|---|---|
| CN105258985A (en) * | 2015-11-10 | 2016-01-20 | 贵州电网有限责任公司电力科学研究院 | SCR outlet flue fracture surface nitric oxide distribution monitoring device |
| CN105784557A (en) * | 2016-05-17 | 2016-07-20 | 南京友智科技有限公司 | Matrix type automatic cycle sampling device |
| CN105806673A (en) * | 2016-05-06 | 2016-07-27 | 南京波瑞自动化科技有限公司 | Multipoint sampling device and multipoint sampling system for dust measurement of large section flue of power station |
| CN106018002A (en) * | 2016-05-17 | 2016-10-12 | 南京友智科技有限公司 | Matrix type mixed constant-speed sampling device |
| CN106092846A (en) * | 2016-08-24 | 2016-11-09 | 山西平朔煤矸石发电有限责任公司 | A kind of super low concentration wet flue gas flue dust on-line measurement device and On-line Measuring Method thereof |
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| CN108279135A (en) * | 2018-03-22 | 2018-07-13 | 国网安徽省电力有限公司电力科学研究院 | A kind of coal unit minimum discharge transformation acceptance method |
| CN110456006A (en) * | 2019-09-12 | 2019-11-15 | 北京市劳动保护科学研究所 | Pollutant emission monitors system in burst accident |
| CN111855892A (en) * | 2019-04-26 | 2020-10-30 | 沈阳铝镁设计研究院有限公司 | Manual detection method and device for disorganized fluoride emission of skylight in electrolytic workshop |
| CN112345309A (en) * | 2020-10-27 | 2021-02-09 | 中国船舶重工集团公司第七0三研究所 | Sampling probe for flue gas analysis |
| CN112362118A (en) * | 2020-10-13 | 2021-02-12 | 成都瑞柯林工程技术有限公司 | Micro-charge induction device, dust removal system and monitoring method, equipment and device thereof |
| CN116106485A (en) * | 2023-03-28 | 2023-05-12 | 西安西热锅炉环保工程有限公司 | Array type flow velocity concentration synchronous measurement carbon emission continuous monitoring system |
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| CN105258985A (en) * | 2015-11-10 | 2016-01-20 | 贵州电网有限责任公司电力科学研究院 | SCR outlet flue fracture surface nitric oxide distribution monitoring device |
| CN105806673A (en) * | 2016-05-06 | 2016-07-27 | 南京波瑞自动化科技有限公司 | Multipoint sampling device and multipoint sampling system for dust measurement of large section flue of power station |
| CN105784557A (en) * | 2016-05-17 | 2016-07-20 | 南京友智科技有限公司 | Matrix type automatic cycle sampling device |
| CN106018002A (en) * | 2016-05-17 | 2016-10-12 | 南京友智科技有限公司 | Matrix type mixed constant-speed sampling device |
| CN106092846A (en) * | 2016-08-24 | 2016-11-09 | 山西平朔煤矸石发电有限责任公司 | A kind of super low concentration wet flue gas flue dust on-line measurement device and On-line Measuring Method thereof |
| CN106092846B (en) * | 2016-08-24 | 2018-08-21 | 山西平朔煤矸石发电有限责任公司 | A kind of super low concentration wet flue gas flue dust on-line measurement device and its On-line Measuring Method |
| CN108254581B (en) * | 2018-01-15 | 2023-10-31 | 西安热工研究院有限公司 | Gaseous pollutant multi-point automatic sampling test system |
| CN108254581A (en) * | 2018-01-15 | 2018-07-06 | 西安热工研究院有限公司 | A kind of gaseous pollutant multiple spot automatic sampling tests system |
| CN108279135A (en) * | 2018-03-22 | 2018-07-13 | 国网安徽省电力有限公司电力科学研究院 | A kind of coal unit minimum discharge transformation acceptance method |
| CN108279135B (en) * | 2018-03-22 | 2020-01-24 | 国网安徽省电力有限公司电力科学研究院 | Ultralow emission reconstruction acceptance method for coal-fired unit |
| CN111855892A (en) * | 2019-04-26 | 2020-10-30 | 沈阳铝镁设计研究院有限公司 | Manual detection method and device for disorganized fluoride emission of skylight in electrolytic workshop |
| CN110456006A (en) * | 2019-09-12 | 2019-11-15 | 北京市劳动保护科学研究所 | Pollutant emission monitors system in burst accident |
| CN112362118A (en) * | 2020-10-13 | 2021-02-12 | 成都瑞柯林工程技术有限公司 | Micro-charge induction device, dust removal system and monitoring method, equipment and device thereof |
| WO2022078378A1 (en) * | 2020-10-13 | 2022-04-21 | 成都瑞柯林工程技术有限公司 | Triboelectric instrument, and dust removal system and monitoring method, device, and apparatus therefor |
| CN112362118B (en) * | 2020-10-13 | 2023-04-21 | 成都瑞柯林工程技术有限公司 | Micro-charge induction device, dust removal system, monitoring method, equipment and device thereof |
| CN112345309A (en) * | 2020-10-27 | 2021-02-09 | 中国船舶重工集团公司第七0三研究所 | Sampling probe for flue gas analysis |
| CN116106485A (en) * | 2023-03-28 | 2023-05-12 | 西安西热锅炉环保工程有限公司 | Array type flow velocity concentration synchronous measurement carbon emission continuous monitoring system |
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Granted publication date: 20150826 Termination date: 20180529 |