CN109470532A - A kind of taper single tube mouth sampling system with second level shielding case - Google Patents
A kind of taper single tube mouth sampling system with second level shielding case Download PDFInfo
- Publication number
- CN109470532A CN109470532A CN201910052098.8A CN201910052098A CN109470532A CN 109470532 A CN109470532 A CN 109470532A CN 201910052098 A CN201910052098 A CN 201910052098A CN 109470532 A CN109470532 A CN 109470532A
- Authority
- CN
- China
- Prior art keywords
- shielding case
- level
- ozzle
- nozzle
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 32
- 241000973497 Siphonognathus argyrophanes Species 0.000 title claims abstract description 8
- 238000012806 monitoring device Methods 0.000 claims abstract description 5
- 230000003746 surface roughness Effects 0.000 claims description 14
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
Abstract
The taper single tube mouth sampling system with second level shielding case that the present invention relates to a kind of, it is characterized in that: including level-one shielding case, the level-one shielding case is in infundibulate, funnel end is provided with the second level shielding case being fixed with one, second level shielding case inside end is fixedly connected with ozzle, ozzle end is connected with pipeline, and pipe end is connect with external exhaust gas emission monitoring device；The second level shielding case is circular tube structure, and the connection type with ozzle is Along ent contact connectio, is provided with airflow channel between the two；The ozzle is made of nozzle and pipe shaft, and nozzle is the circular cone structure of tubulose.The beneficial effects of the present invention are: overall structure is simple, it can be uniformly mixed arda sampling in Airborne Effluent, sampling result is more accurate and effective compared to multi-nozzle sampling system.
Description
Technical field
It is especially a kind of with second level shielding case the present invention relates to the acquisition and monitoring of pollution sources in exhaust gas discharge process
Taper single tube mouth sampling system.
Background technique
To distinguish, whether every pollution sources meet emission limit requirement in industrial discharged waste gas, it usually needs to chimney or row
The Airborne Effluent in pipeline is put to run continuous samples and monitor.Many sampling line systems are all made of multi-nozzle sampling at present,
Multi-nozzle sampling plan its disadvantage is clearly: being 1. sampled in non-mixed uniform sampling region, sampling result does not have
It is representative；2. multi-nozzle sampling system is since horizontal tube is more with bend pipe, and structure is complicated, easily causes Airborne Effluent pipeline
Loss, so as to cause sampling serious distortion.It is simple and have both efficient sampling system therefore, it is necessary to design a kind of structure, to solve
Certainly this problem.
Summary of the invention
The taper single tube mouth sampling system with second level shielding case that the purpose of the present invention is to propose to a kind of, through the invention,
Airborne Effluent sampling efficiency can be improved, to simplify the system structure of sampling line, so that sampling result is more acurrate, has
Effect.
The invention adopts the following technical scheme: a kind of taper single tube mouth sampling system with second level shielding case, feature
Be: including level-one shielding case, the level-one shielding case is in infundibulate, and funnel end is provided with two cascade screens being fixed with one
Cover, second level shielding case inside end are fixedly connected with ozzle, and ozzle end is connected with pipeline, and pipe end and external exhaust gas discharge
Monitoring device connection；The second level shielding case is circular tube structure, and the connection type with ozzle is that Along ent connects, two
Airflow channel is provided between person；The ozzle is made of nozzle and pipe shaft, and nozzle is the circular cone structure of tubulose, and end is set
It is equipped with external screw thread, the angle of internal wall of pipe orifice face and central axis isα,3°≤α≤5°,The angle of nozzle outside wall surface and central axis
Less than or equal to 12 °, pipe shaft is circular tube structure, and one end is provided with the internal screw thread matched with nozzle external screw thread, the other end and pipeline
Connection.
Its inner wall surface roughness of the level-one shielding case is Ra0.8, and makees antistatic, antirust treatment, section face
Product is the 8%~12% of monitored discharge tube area of section.
Its inner wall surface roughness of the second level shielding case is Ra0.8, and makees antistatic, antirust treatment, central shaft
Line is overlapped with the central axis of level-one shielding case.
The ozzle central axis is overlapped with the central axis of second level shielding case, and inside and outside wall surface roughness is
Ra0.8, and make antistatic, antirust treatment.
The inner wall of the pipe surface roughness is Ra0.8, and makees antistatic, antirust treatment.
The beneficial effects of the present invention are: overall structure is simple, it can be uniformly mixed arda sampling in Airborne Effluent, passed through
The combination of two-stage shielding case is effectively improved and is taken using the conical nozzle after special second level shielding case and optimized design
Sample ozzle reduces the wall surface loss of Airborne Effluent to the transmitance of particulate, can be molten to gas under high turbulent flow condition
Micelle keeps high transmittance, allows sampling nozzle to be sampled in the case where high turbulence intensity, therefore, sampling result is compared
Multi-nozzle sampling system is more accurate and effective.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the connection main view of second level shielding case and ozzle of the invention.
Fig. 3 is the connection top view of second level shielding case and ozzle of the invention.
Fig. 4 is the main view of nozzle.
In figure, 1, level-one shielding case, 2, second level shielding case, 3, ozzle, 4, pipeline, 5, monitoring device, 6, nozzle, 7, pipe
Body, 8, tie point.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings of the specification.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of taper single tube mouth sampling system with second level shielding case, feature
Be: including level-one shielding case 1, the level-one shielding case 1 is in infundibulate, and funnel end is provided with the second level screen being fixed with one
Cover cover 2,2 inside end of second level shielding case is fixedly connected with ozzle 3, and 3 end thread of ozzle is connected with pipeline 4, pipe end with
External exhaust gas emission monitoring device 5 is threadedly coupled；The second level shielding case 2 is circular tube structure, the connection type with ozzle 3
For three 8 welded type of tie point connections of equal part, it is provided with airflow channel 9 between the two；The ozzle is by nozzle 6 and pipe shaft 7
It constitutes, nozzle 6 is the circular cone structure of tubulose, and end is provided with external screw thread, and the angle of 6 inner wall of nozzle and central axis isα,
3°≤α≤5°,The angle of 6 outside wall surface of nozzle and central axis is less than or equal to 12 °, and the size of the two angles will have a direct impact on pipe
The inhalation rate of 3 pairs of mouth sampling air-flows is calculated by flow fieldoptimization it is found that the sucking of 3 pairs of ozzle sampling air-flows is imitated under this numerical value
Rate can satisfy engineer application needs, and effect is the inhalation rate for improving 3 pairs of ozzle sampling air-flows, to promote entire sample train
The transmitance of system, pipe shaft 7 are circular tube structure, and one end is provided with the internal screw thread matched with 6 external screw thread of nozzle, the other end and pipeline
4 connections.
Its inner wall surface roughness of the level-one shielding case 1 is Ra0.8, and makees antistatic, antirust treatment, section face
Product is the 8%~12% of monitored discharge tube area of section.Its principle is: particulate can be generated with pipeline inner wall and directly be connect
Touching, if pipeline inner wall surface roughness is excessively high, surface gully interval is excessive, will cause particulate and is deposited in these gullies
Face, to reduce particulate transmitance；If inner wall static electrification, electrostatic effect can be such that particulate is adsorbed on inner wall,
To reduce particulate transmitance；If inner wall gets rusty, the surface roughness of rusty part no longer meets Ra0.8, can make gas
Sol particles flow through rusty part therewith random collision when, cause to deposit, reduce transmitance.
Its inner wall surface roughness of the second level shielding case 2 is Ra0.8, and makees antistatic, antirust treatment, central shaft
Line is overlapped with the central axis of level-one shielding case 1.
3 central axis of ozzle is overlapped with the central axis of second level shielding case 2, and inside and outside wall surface roughness is equal
For Ra0.8, and make antistatic, antirust treatment.
The 4 inner wall surface roughness of pipeline is Ra0.8, and makees antistatic, antirust treatment.
The principle of the present invention is: the setting of level-one shielding case entrance is in the well-mixed region of Airborne Effluent, to being sampled
Air-flow carries out pre-separation, obtains first order center stream, center stream remixes in shielding case, and is delivered at second level shielding case.
Nozzle set constitutes single-stage shielding case sampling nozzle structure in second level shielding case, flows into the resulting first order center of pre-separation
Row separates again, is collected into second level center stream, to reach the loss for reducing particulate, promotes the purpose of transmitance.Pass through
Two-stage shield combination achievees the effect that pre-separation-separates again.
The wall surface loss of Airborne Effluent can be effectively reduced, by the cone of optimization design in the setting of I and II shielding case
Shape nozzle can keep high transmittance to particulate under high turbulent flow condition, so that ozzle is to sampling gas when sampling
The suction efficiency of stream can satisfy engineer application needs.
Part not in the detailed description of the invention is the prior art.
Claims (5)
1. a kind of taper single tube mouth sampling system with second level shielding case, it is characterized in that: including level-one shielding case, described one
Cascade screen cover is in infundibulate, and funnel end is provided with the second level shielding case being fixed with one, and second level shielding case inside end is fixed
It is connected with ozzle, ozzle end is connected with pipeline, and pipe end is connect with external exhaust gas emission monitoring device；The second level screen
Covering cover is circular tube structure, and the connection type with ozzle is Along ent contact connectio, is provided with airflow channel between the two；It is described
Ozzle be made of nozzle and pipe shaft, nozzle is the circular cone structure of tubulose, and end is provided with external screw thread, and internal wall of pipe orifice face is in
The angle of mandrel line isα,3°≤α≤5°,The angle of nozzle outside wall surface and central axis is less than or equal to 12 °, and pipe shaft is round tube knot
Structure, one end are provided with the internal screw thread matched with nozzle external screw thread, and the other end is connect with pipeline.
2. its inner wall surface roughness of level-one shielding case described in is Ra0.8, and makees antistatic, antirust treatment, area of section
It is the 8%~12% of monitored discharge tube area of section.
3. its inner wall surface roughness of second level shielding case described in is Ra0.8, and makees antistatic, antirust treatment, center axis thereof
It is overlapped with the central axis of level-one shielding case.
4. ozzle central axis described in is overlapped with the central axis of second level shielding case, and inside and outside wall surface roughness is
Ra0.8, and make antistatic, antirust treatment.
5. inner wall of the pipe surface roughness described in is Ra0.8, and makees antistatic, antirust treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052098.8A CN109470532A (en) | 2019-01-21 | 2019-01-21 | A kind of taper single tube mouth sampling system with second level shielding case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910052098.8A CN109470532A (en) | 2019-01-21 | 2019-01-21 | A kind of taper single tube mouth sampling system with second level shielding case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109470532A true CN109470532A (en) | 2019-03-15 |
Family
ID=65678596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910052098.8A Pending CN109470532A (en) | 2019-01-21 | 2019-01-21 | A kind of taper single tube mouth sampling system with second level shielding case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109470532A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2095684C1 (en) * | 1994-01-10 | 1997-11-10 | Красноярский государственный технический университет | Furnace |
| CN103076208A (en) * | 2013-01-08 | 2013-05-01 | 中国工程物理研究院核物理与化学研究所 | Automatic sampling system for radioactive gas-carrying discharge substances |
| KR20130044434A (en) * | 2011-10-24 | 2013-05-03 | 주식회사 랩웍스 | Shroud nozzles for particle and gas sampling and its fixed device |
| CN203133287U (en) * | 2013-01-05 | 2013-08-14 | 中国核电工程有限公司 | Sampling pipe mouth specially for gaseous effluent monitoring |
| US20180174813A1 (en) * | 2015-07-09 | 2018-06-21 | Shimadzu Corporation | Mass spectrometer and method applied thereby for reducing ion loss and succeeding stage vacuum load |
| CN108680403A (en) * | 2018-06-21 | 2018-10-19 | 重庆交通大学 | Additional pressure-flow-type multistage submicron particle collector |
| CN209485798U (en) * | 2019-01-21 | 2019-10-11 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of taper single tube mouth sampling system with second level shielding case |
-
2019
- 2019-01-21 CN CN201910052098.8A patent/CN109470532A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2095684C1 (en) * | 1994-01-10 | 1997-11-10 | Красноярский государственный технический университет | Furnace |
| KR20130044434A (en) * | 2011-10-24 | 2013-05-03 | 주식회사 랩웍스 | Shroud nozzles for particle and gas sampling and its fixed device |
| CN203133287U (en) * | 2013-01-05 | 2013-08-14 | 中国核电工程有限公司 | Sampling pipe mouth specially for gaseous effluent monitoring |
| CN103076208A (en) * | 2013-01-08 | 2013-05-01 | 中国工程物理研究院核物理与化学研究所 | Automatic sampling system for radioactive gas-carrying discharge substances |
| US20180174813A1 (en) * | 2015-07-09 | 2018-06-21 | Shimadzu Corporation | Mass spectrometer and method applied thereby for reducing ion loss and succeeding stage vacuum load |
| CN108680403A (en) * | 2018-06-21 | 2018-10-19 | 重庆交通大学 | Additional pressure-flow-type multistage submicron particle collector |
| CN209485798U (en) * | 2019-01-21 | 2019-10-11 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of taper single tube mouth sampling system with second level shielding case |
Non-Patent Citations (1)
| Title |
|---|
| 张坤 等: "自碎式消污液清除室内壁面放射性粉尘试验研究", 《辐射防护》, pages 206 - 213 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209485798U (en) | A kind of taper single tube mouth sampling system with second level shielding case | |
| CN206566678U (en) | A kind of spray column | |
| CN206240174U (en) | From flushing centrifugal net filter | |
| TWI788729B (en) | Particles capturing system | |
| CN109470532A (en) | A kind of taper single tube mouth sampling system with second level shielding case | |
| CN201164776Y (en) | Duster | |
| CN103721501B (en) | A kind of pneumatic capturing device administered for flue gas PM2.5 | |
| CN105569721A (en) | Air-spray linkage type annular jetting dust-removal system for mining | |
| US11154873B2 (en) | Multi-cyclonic dust filter device | |
| CN103657287A (en) | Dust collecting device applied to fiber mat processing workshop | |
| CN208786046U (en) | A kind of horizontal pipeline with dust-extraction unit | |
| CN109663443B (en) | Respiratory dust trapping apparatus | |
| CN207102162U (en) | A kind of large-scale air clarifier filtration | |
| CN106121710A (en) | A kind of spray dust remover | |
| CN203244886U (en) | Dust collection device for carbonyl iron powder | |
| RU195672U1 (en) | DIRECT CYCLON | |
| CN105396401B (en) | Aerodynamic force with gas-water separation air duct is atomized hybrid separation device | |
| CN2261876Y (en) | Venturi water film dust remover | |
| CN205995204U (en) | After sintering wet desulphurization, dust depth removes integrating device | |
| CN206173522U (en) | Spinning frame vacuum device that induced drafts | |
| CN109759252A (en) | A kind of nozzle arrangements | |
| RU2590544C1 (en) | Device for cleaning natural gas | |
| CN108355406A (en) | A kind of swirl type dust-extraction unit | |
| CN110116056A (en) | A kind of cyclone dust collectors | |
| CN209204516U (en) | A kind of cistern system except haze device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |