CN106840578B - Fixed pollution source simulation test wind tunnel - Google Patents
Fixed pollution source simulation test wind tunnel Download PDFInfo
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- CN106840578B CN106840578B CN201710225294.1A CN201710225294A CN106840578B CN 106840578 B CN106840578 B CN 106840578B CN 201710225294 A CN201710225294 A CN 201710225294A CN 106840578 B CN106840578 B CN 106840578B
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 24
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 13
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 239000010419 fine particle Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0092—Monitoring flocculation or agglomeration
Abstract
The invention discloses a fixed pollution source simulation test wind tunnel which comprises a wind tunnel unit and a test unit, wherein the wind tunnel unit is communicated with the test unit, the wind tunnel unit comprises a high-efficiency air filter, a smoke generating device, a power section, a temperature exchange section, a stabilizing section and a humidity generation section which are sequentially connected, the stabilizing section is connected with a dust generation system, the test unit comprises a horizontal section and a vertical section, one end of the horizontal section is connected with the humidity generation section, the other end of the horizontal section is connected with the vertical section, the axis of the vertical section is perpendicular to the plane where the axis of the horizontal section and the axis of the wind tunnel unit are located, and observation test holes are respectively formed in different cross sections of the horizontal section and the vertical section. According to the invention, through designing a fixed pollution source smoke fine particle monitoring wind tunnel, simulating smoke generated by the wind tunnel, arranging a smoke observation test hole in a test unit, monitoring the distribution condition of particles and wind fields of each cross section in the wind tunnel, researching the environmental change characteristics of the sampled cross section, finding out the composition of different pollution source fine particles and estimating the total emission amount.
Description
Technical Field
The invention relates to the field of pollution source monitoring, in particular to a fixed pollution source simulation test wind tunnel.
Background
The air pollution seriously affects the development of economy and the healthy life of people, so that the tracing of the air pollution is urgent. The emission of the fixed pollution source is one of main reasons for causing air pollution, the research on the emission components and the emission quantity of the fixed pollution source is a necessary way for monitoring the emission pollutants of the fixed pollution source in a standardized way, and the design of the smoke wind tunnel can effectively research the emission characteristics of smoke fine particles of the fixed pollution source.
The fixed pollution source flue gas is high in temperature and high in humidity, some particles in a gaseous form are condensed into particles due to the temperature reduction and dilution effects after being discharged into the air, the temperature and the humidity of different fixed pollution source flue gases are different, the operation speed of a discharge system is also changed continuously, and the flue gas discharge has complex particle changes, so that the monitoring difficulty of fine flue gas particles is increased. Developed countries (the United states, japan and the like) have long research time on the fine particle components and the change characteristics of the flue gas inside and outside the fixed pollution source flue, the emission characteristics and the change rules of the flue gas fine particles are mastered comprehensively, the research in China is just started, basic equipment is not sound enough, and a monitoring method and technical support for the flue gas emission are lacking. The existing sampling mode of the fixed source (chimney) is mainly to directly insert a smoke gun into the chimney, and the wind speed distribution, the particle concentration distribution, the variation condition of condensable particles and the like of the sampling cross section in the chimney are difficult to monitor for the environmental condition of the smoke gun insertion point, so that the smoke gun is directly inserted for sampling, and the particle emission data information calculated by the smoke flow rate and the chimney cross section is used for calculating the total emission amount of the chimney, so that the environmental data of the testing cross section in the chimney is lacked.
Therefore, how to improve the prior art, and how to monitor the emission characteristics and change rules of a fixed pollution source (chimney) and lack the environmental data of the test cross section in the chimney is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a fixed pollution source simulation test wind tunnel so as to solve the problems in the prior art, monitor emission data of different cross sections of a chimney and enable environmental data to be more comprehensive.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a fixed pollution source simulation test wind tunnel which comprises a wind tunnel unit and a test unit, wherein the wind tunnel unit is communicated with the test unit, the wind tunnel unit comprises a high-efficiency air filter, a smoke generating device, a power section, a temperature exchange section, a stabilizing section and a humidity generation section which are sequentially connected, the stabilizing section is connected with a dust generation system, the test unit comprises a horizontal section and a vertical section, one end of the horizontal section is connected with the humidity generation section, the other end of the horizontal section is connected with the vertical section, the axis of the vertical section is perpendicular to the planes of the axis of the horizontal section and the axis of the wind tunnel unit, and observation test holes are respectively formed in different cross sections of the horizontal section and the vertical section.
Preferably, the high-efficiency air filter is connected with the power section through a first corner and a connecting pipe in sequence, and the temperature exchange section is connected with the stabilizing section through a second corner and a third corner in sequence.
Preferably, the flue gas generating device is arranged in the first corner, and a humidity controller is further arranged in the first corner.
Preferably, the first corner, the second corner and the third corner are provided with guide plates.
Preferably, a honeycomb device and a damping net are sequentially arranged in the stabilizing section.
Preferably, the larger diameter one end of the humidity generation section is connected with the stabilizing section, the smaller diameter one end of the humidity generation section is connected with the horizontal section, and the humidity generation section is provided with a wind speed, temperature and humidity monitoring probe.
Preferably, the horizontal section and the vertical section are each provided with five sets of observation test holes at different cross sections.
Preferably, each group of observation test holes on the horizontal section is three, and the three observation test holes are respectively positioned at two sides and the bottom of the middle part of the horizontal section.
Preferably, each group of observation test holes on the vertical section is four, the four observation test holes are respectively positioned at two sides, the top and the bottom of the middle part of the vertical section, and the observation test holes are all provided with transparent antistatic plates.
Compared with the prior art, the invention has the following technical effects: according to the solid pollution source simulation test wind tunnel, the fixed pollution source smoke fine particle monitoring wind tunnel is designed, smoke generated by the wind tunnel is simulated, a smoke observation test hole is formed in a test unit, the distribution condition of particles and wind fields of each cross section in the wind tunnel is monitored, the environmental change characteristics of the sampled cross section are researched, the composition of different pollution source fine particles is obtained, and the total emission amount is estimated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a fixed pollution source simulation test wind tunnel of the present invention;
FIG. 2 is a schematic diagram of a test unit according to the present invention;
wherein 1 is a wind tunnel unit, 101 is a high-efficiency air filter, 102 is a power section, 103 is a temperature exchange section, 104 is a stabilizing section, 105 is a humidity generation section, 106 is a first corner, 107 is a connecting section, 108 is a second corner, 109 is a third corner, 2 is a test unit, 201 is a horizontal section, 202 is a vertical section, 203 is an observation test hole, and 3 is a dust generation system.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a fixed pollution source simulation test wind tunnel so as to solve the problems in the prior art, monitor emission data of different cross sections of a chimney and enable environmental data to be more comprehensive.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1 to 2, fig. 1 is a schematic diagram of an overall structure of a wind tunnel for simulating and testing a fixed pollution source according to the present invention, and fig. 2 is a schematic diagram of a structure of a testing unit according to the present invention.
The invention provides a fixed pollution source simulation test wind tunnel, which comprises a wind tunnel unit 1 and a test unit 2, wherein the wind tunnel unit 1 is communicated with the test unit 2, the wind tunnel unit 1 comprises a high-efficiency air filter 101, a smoke generating device (not shown in the figure), a power section 102, a temperature exchange section 103, a stabilizing section 104 and a humidity generating section 105 which are sequentially connected, the stabilizing section 104 is connected with a dust generating system 3, the test unit 2 comprises a horizontal section 201 and a vertical section 202, one end of the horizontal section 201 is connected with the humidity generating section 105, the other end of the horizontal section 201 is connected with the vertical section 202, the axis of the vertical section 202 is respectively perpendicular to the planes of the axis of the horizontal section 201 and the axis of the wind tunnel unit 1, and observation test holes 203 are respectively formed in different cross sections of the horizontal section 201 and the vertical section 202.
According to the fixed pollution source simulation test wind tunnel, the fixed pollution source smoke fine particle monitoring wind tunnel is designed to simulate smoke generated by the wind tunnel, the test unit 2 is provided with smoke observation test holes 203, the distribution condition of particles and wind fields of each cross section is monitored, the environmental change characteristics of the sampled cross section are researched, the composition of different pollution source fine particles is obtained, and the total emission amount is estimated.
The high-efficiency air filter 101 is connected with the power section 102 through the first corner 106 and the connecting pipe 107 in sequence, the high-efficiency air filter 101 can filter particles in air, and a blower is arranged in the power section 102 to provide power for the wind tunnel unit 1. The temperature exchange section 103 and the stabilizing section 104 are sequentially connected through the second corner 108 and the third corner 109, an evaporator and a heater are arranged in the temperature exchange section 103, the temperature of the wind tunnel unit 1 is regulated, and meanwhile, the dispersibility of particles is guaranteed, and the particles are not easy to combine with water vapor. The stabilizing section 104 is connected to the dust generating system 3, and the dust generating system 3 is capable of providing standard dust or simulating air dust conditions.
Specifically, the flue gas generating device is arranged in the first corner 106, and a humidity controller is further arranged in the first corner 106 and used for adjusting the humidity of the wind tunnel unit 1.
Baffles are arranged in the first corner 106, the second corner 108 and the third corner 109, and can guide airflow, so that energy loss and turbulence phenomenon are reduced.
More specifically, a honeycomb and a damping net are disposed in sequence within the stabilizing section 104 for attenuating and eliminating turbulence, eddies, and the like, and directing the airflow into laminar flow.
The larger diameter end of the humidity generation section 105 is connected with the stabilizing section 104, the smaller diameter end of the humidity generation section 105 is connected with the horizontal section 201, potential energy of air flow is converted into kinetic energy, and the humidity generation section 105 is further provided with a wind speed, temperature and humidity monitoring probe.
In this embodiment, the diameters of the horizontal section 201 and the vertical section 202 are 600mm, the horizontal section 201 and the vertical section 202 are provided with five groups of observation test holes 203 at different cross sections, the distance between two adjacent groups of observation test holes 203 is 1000mm, and the aperture is 120mm.
Each group of observation test holes 203 on the horizontal section 201 is three, and the observation test holes are respectively positioned at two sides and the bottom of the middle part of the horizontal section 201. Every group of observation test holes 203 on the vertical section 202 is four, is located the middle part both sides of vertical section respectively, top and bottom, and operating personnel can observe the flue gas condition of different cross-sections department through observing test hole 203, observe test hole 203 and all set up transparent antistatic plate, and antistatic plate is fixed with solid fixed ring, can tear solid fixed ring down when needs are tested, inserts instrument test equipment sampling head monitoring different cross-section's point location environment and particulate matter information from observing test hole 203.
When the fixed pollution source simulation test wind tunnel works, air in the external environment enters the wind tunnel unit 1 through the high-efficiency air filter, is mixed with smoke after passing through the first corner 106, is fully mixed through the power section 102, then enters the temperature exchange section 103, the mixed smoke is usually high in humidity, in order to prevent collision and combination of particulate matters, the temperature of the blower can be raised by the self temperature and the heater, the loss of the particulate matters is reduced, then the particulate matters and the humidity form uniform aerosol smoke components through the evaporator, the smoke sequentially enters the second corner 108 and the third corner 109, then sequentially passes through the honeycomb and the damping net of the stabilizing section 104, the turbulence is weakened or even eliminated, the airflow enters the humidity generation section 105 after being laminar, the airflow potential energy is converted into kinetic energy, enters the horizontal section 201 of the test unit 2, enters the vertical section 202 through the corner, and finally achieves the purpose of comprehensively monitoring the distribution and the change characteristics of the smoke through the arrangement of the observation test holes 203 in different cross sections of the horizontal section 201 and the vertical section 202.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a fixed pollution source simulation test wind tunnel which characterized in that: the device comprises a wind tunnel unit and a test unit, wherein the wind tunnel unit is communicated with the test unit, the wind tunnel unit comprises a high-efficiency air filter, a smoke generating device, a power section, a temperature exchange section, a stabilizing section and a humidity generating section which are sequentially connected, the stabilizing section is connected with a dust generating system, the test unit comprises a horizontal section and a vertical section, one end of the horizontal section is connected with the humidity generating section, the other end of the horizontal section is connected with the vertical section, the axis of the vertical section is perpendicular to the axis of the horizontal section and the plane of the axis of the wind tunnel unit respectively, and observation test holes are formed in different cross sections of the horizontal section and the vertical section respectively; the vertical section is communicated with the external environment;
five groups of observation test holes are arranged at different cross sections of the horizontal section and the vertical section; each group of observation test holes on the vertical section are four, the four observation test holes are respectively positioned at two sides, the top and the bottom of the middle part of the vertical section, and transparent antistatic plates are arranged in the observation test holes;
the big one end of diameter in the humidity generation section with stable section links to each other, the little one end of diameter in the humidity generation section with the horizontal segment links to each other, the humidity generation section sets up wind speed, temperature, humidity monitor probe.
2. The stationary source simulation test wind tunnel according to claim 1, wherein: the high-efficiency air filter is connected with the power section through a first corner and a connecting pipe in sequence, and the temperature exchange section is connected with the stabilizing section through a second corner and a third corner in sequence.
3. The stationary source simulation test wind tunnel according to claim 2, wherein: the flue gas generating device is arranged in the first corner, and a humidity controller is further arranged in the first corner.
4. The stationary source simulation test wind tunnel according to claim 2, wherein: and the first corner, the second corner and the third corner are internally provided with guide plates.
5. The stationary source simulation test wind tunnel according to claim 1, wherein: and a honeycomb device and a damping net are sequentially arranged in the stabilizing section.
6. The stationary source simulation test wind tunnel according to claim 1, wherein: each group of observation test holes on the horizontal section are three, and the three observation test holes are respectively positioned at two sides and the bottom of the middle part of the horizontal section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710225294.1A CN106840578B (en) | 2017-04-07 | 2017-04-07 | Fixed pollution source simulation test wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710225294.1A CN106840578B (en) | 2017-04-07 | 2017-04-07 | Fixed pollution source simulation test wind tunnel |
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| CN106840578A CN106840578A (en) | 2017-06-13 |
| CN106840578B true CN106840578B (en) | 2023-10-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051175B (en) * | 2017-11-30 | 2020-08-11 | 国家电网公司 | Laboratory circulation wind tunnel device |
| CN108106811B (en) * | 2017-12-20 | 2019-11-26 | 长沙理工大学 | Wind tunnel test pollutant generation system and monitoring system |
| CN110514388A (en) * | 2019-09-02 | 2019-11-29 | 合肥工业大学 | A kind of wind speed, the adjustable pollutant diffusion wind-tunnel experimental provision of temperature and humidity |
| CN114472363B (en) * | 2022-02-15 | 2023-06-02 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas bath system for semiconductor equipment |
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