CN220738967U - Non-contact back-blowing dust remover for smoke dust measurer - Google Patents
Non-contact back-blowing dust remover for smoke dust measurer Download PDFInfo
- Publication number
- CN220738967U CN220738967U CN202322270080.XU CN202322270080U CN220738967U CN 220738967 U CN220738967 U CN 220738967U CN 202322270080 U CN202322270080 U CN 202322270080U CN 220738967 U CN220738967 U CN 220738967U
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- Prior art keywords
- smoke
- blowing
- measuring instrument
- dust
- pipe
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- 238000007664 blowing Methods 0.000 title claims abstract description 75
- 239000000779 smoke Substances 0.000 title claims abstract description 56
- 239000000428 dust Substances 0.000 title claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a smoke and dust measuring apparatu non-contact blowback dust collector, includes smoke and dust measuring apparatu and inserts the installation flange pipe in chimney or the flue, characterized by: a back-blowing clamping sleeve is connected between the smoke measuring instrument and the mounting flange pipe, the back-blowing clamping sleeve is composed of an inner sleeve pipe and an outer sleeve pipe which are nested with each other, and connecting flanges fixed at two ends of the inner sleeve pipe and the outer sleeve pipe, and an air inlet is arranged on one end of the outer sleeve pipe, which is close to the smoke measuring instrument, along the radial direction and used for externally connecting filtered back-blowing; a plurality of obliquely arranged blowholes are uniformly distributed on one end of the inner sleeve close to the mounting flange pipe along the circumferential direction and are used for forming an omnibearing back-blowing air curtain in the inner sleeve. The beneficial effects are that: the smoke in a chimney or a flue can be effectively isolated; the smoke is prevented from polluting the lens group close to the smoke measuring instrument; the filtering requirement on the back blowing gas is not high, so that the pollution probability of the lens group is small, the long-term normal operation of the smoke measuring instrument can be ensured, the measuring precision of equipment is ensured, and the maintenance times of the equipment are reduced.
Description
Technical Field
The utility model belongs to the field of flue gas detection, and particularly relates to a non-contact back-blowing dust removal device.
Background
With the increase of environmental protection in China, the smoke emission standard is improved, the smoke emission concentration is lower and lower, the accuracy of smoke monitoring equipment is higher, and the range concentration of the smoke measuring instrument is from 0mg/m to 300mg/m 3 Or 0-500mg/m 3 To the current 0-50mg/m 3 Or 0-100mg/m 3 . The pollution of the lens group in the low-range smoke measuring instrument can seriously affect the measuring result, if the lens group is adhered with a small dust particle, 30% -50% of the measuring result is affected, so that the back blowing of the lens group of the smoke measuring instrument is particularly important.
At present, a smoke and dust measuring instrument is fixed at the outer end of a mounting flange pipe inserted into a chimney or a flue, and filtered back-blowing air is introduced through a back-blowing air inlet when the smoke and dust measuring instrument works, so that on one hand, the back-blowing air sweeps the lens group to remove surface dust and form back-blowing air flow, and smoke in the chimney or the flue is prevented from polluting the lens group near the smoke and dust measuring instrument; on the other hand, the smoke to be tested is cooled, and the lens group is prevented from condensing to form water drops.
The problem that above-mentioned structure exists is that if blowback gas filters the filter core and changes untimely, perhaps blowback pipeline is sealed not well all can let tiny dust particle enter into the blowback passageway, will have dust particle adhesion influence measuring result on the lens, and some dust particle can blow away through the blowback, and some can only be manual work clear away to influence the measuring result of smoke and dust measuring apparatu and increase the work load of operation maintenance.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a non-contact back-blowing dust removing device of a smoke measuring instrument.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the non-contact back-blowing dust collector for fume measuring instrument includes fume measuring instrument and installing flange pipe inserted into chimney or flue, and features that: a back-blowing clamping sleeve is connected between the smoke measuring instrument and the mounting flange pipe, the back-blowing clamping sleeve is composed of an inner sleeve pipe and an outer sleeve pipe which are nested with each other, and connecting flanges fixed at two ends of the inner sleeve pipe and the outer sleeve pipe, and an air inlet is arranged on one end of the outer sleeve pipe, which is close to the smoke measuring instrument, along the radial direction and used for externally connecting filtered back-blowing; a plurality of obliquely arranged air blowing holes are uniformly distributed on one end, close to the mounting flange pipe, of the inner sleeve pipe along the circumferential direction and are used for forming an omnibearing back-blowing air curtain in the inner sleeve pipe, so that smoke in a chimney or a flue is isolated.
As a further preferable mode, the number of the air blowing holes is 12, an included angle of 30 degrees is formed between the air blowing holes and the axis of the inner sleeve, and the air blowing holes are directed to the inner cavity of the mounting flange pipe, so that a negative pressure cavity is formed in the inner sleeve by utilizing the jet flow principle, all dust particles in the negative pressure cavity are sucked to the vicinity of the air blowing holes through negative pressure, and the dust particles are blown to a chimney or a flue through back blowing.
As a further preferred option, an asbestos pad is provided between the flange at one end of the blowback jacket tube and the smoke measuring instrument to improve the sealing effect.
As a further preferred feature, the blowback gas inlet of the soot meter is sealed by a sealing plug.
The beneficial effects of the utility model are as follows:
1. because the back-blowing clamping sleeve is connected between the smoke dust measuring instrument and the mounting flange pipe, the outer sleeve of the back-blowing clamping sleeve is provided with an air inlet, and a plurality of air blowing holes are uniformly distributed on the inner sleeve, an omnibearing back-blowing air curtain can be formed in the inner sleeve after the back-blowing is connected, so that the smoke in a chimney or a flue is effectively isolated; can effectively avoid the smoke from polluting the lens group near the smoke measuring instrument.
2. Because the air blowing holes are arranged on the inner sleeve near one end of the mounting flange pipe and are obliquely arranged, after the back blowing air is blown in through the air blowing holes by utilizing the jet flow principle, a negative pressure cavity is formed in the inner sleeve, so that all dust particles in the negative pressure cavity are sucked near the air blowing holes through negative pressure and blown to a chimney or a flue through the back blowing air; and the lens group of the smoke and dust measuring instrument cannot contact back blowing gas, so that the filtering requirement on the back blowing gas is not high, the pollution probability of the lens group is low, the long-term normal operation of the smoke and dust measuring instrument can be ensured, the measuring precision of equipment is ensured, and the maintenance times of the equipment are reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the blowback jacket sleeve of fig. 1.
Fig. 3 is a cross-sectional view A-A of fig. 2.
In the figure: the smoke measuring instrument 1, the asbestos pad 2, the back blowing clamp sleeve 3, the mounting flange pipe 4, the chimney or flue 5, the sealing plug 6, the inner sleeve 301, the outer sleeve 302, the connecting flange 303, the air inlet 304, the air blowing hole 305 and the air inlet cavity 306.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
As shown in fig. 1-3, the non-contact back-blowing dust removing device of the smoke measuring instrument comprises a smoke measuring instrument 1 and a mounting flange pipe 4 inserted into a chimney or a flue 5, wherein a back-blowing clamp sleeve 3 is connected between the smoke measuring instrument 1 and the mounting flange pipe 4 through bolts, the back-blowing clamp sleeve 3 is composed of an inner sleeve 301 and an outer sleeve 302 which are mutually nested, and connecting flanges 303 welded at two ends of the inner sleeve and the outer sleeve, an annular air inlet cavity 306 is formed between the inner sleeve and the outer sleeve, an air inlet 304 is radially arranged at one end, close to the smoke measuring instrument 1, of the outer sleeve 302, and the air inlet 304 is communicated with the air inlet cavity 306 and is used for externally connecting filtered back-blowing air; a plurality of obliquely arranged blowholes 305 are uniformly distributed on one end of the inner sleeve 301 close to the mounting flange pipe 4 along the circumferential direction and are used for forming an omnibearing back-blowing air curtain in the inner sleeve 301 so as to isolate smoke in a chimney or a flue 5.
In this embodiment, the number of the air blowing holes 305 is 12 and an included angle of 30 degrees is formed between the air blowing holes 305 and the axis of the inner sleeve 301, and each air blowing hole 305 is respectively directed to the inner cavity of the mounting flange pipe 4, so that a negative pressure cavity is formed on one side of the inner sleeve, which is close to the smoke measuring instrument 1, by using the jet principle, and all dust particles in the negative pressure cavity are sucked to the vicinity of the air blowing holes 305 through negative pressure and blown to the chimney or the flue 5 through back blowing.
An asbestos pad 2 is arranged between the connecting flange 303 at one end of the back-blowing clamping sleeve 3 and the smoke measuring instrument 1 to improve the sealing effect. The back blowing air inlet of the smoke measuring instrument 1 is sealed by a sealing plug 6.
During operation, through external filterable back-blowing of air intake, back-blowing gets into in the air inlet chamber 306 and disperses in the back-blowing is through the gas pocket 305 oblique blowing in interior sleeve pipe, forms the back-blowing air curtain that encircles a week in interior sleeve pipe 301 to the flue gas in isolated chimney or flue 5 can effectively avoid the flue gas to be close to smoke and dust measuring apparatu 1 and pollute the lens group. Meanwhile, the back blowing air obliquely blown into the inner sleeve 301 can form a negative pressure cavity on one side of the inner sleeve close to the smoke measuring instrument 1 due to the jet flow principle, so that all dust particles in the negative pressure cavity are sucked to the vicinity of the air blowing hole 305 through negative pressure and blown into the chimney or the flue 5 through the back blowing air; and the lens group of the smoke measuring instrument 1 is not contacted with back blowing air. Therefore, the filtering requirement on the back blowing gas is not high, the pollution probability of the lens group is small, the long-term normal operation of the smoke measuring instrument 1 can be ensured, the measuring precision of equipment is ensured, and the maintenance times of the equipment are reduced.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (4)
1. The utility model provides a smoke and dust measuring apparatu non-contact blowback dust collector, includes smoke and dust measuring apparatu and inserts the installation flange pipe in chimney or the flue, characterized by: a back-blowing clamping sleeve is connected between the smoke measuring instrument and the mounting flange pipe, the back-blowing clamping sleeve is composed of an inner sleeve pipe and an outer sleeve pipe which are nested with each other, and connecting flanges fixed at two ends of the inner sleeve pipe and the outer sleeve pipe, and an air inlet is arranged on one end of the outer sleeve pipe, which is close to the smoke measuring instrument, along the radial direction and used for externally connecting filtered back-blowing; a plurality of obliquely arranged air blowing holes are uniformly distributed on one end, close to the mounting flange pipe, of the inner sleeve pipe along the circumferential direction and are used for forming an omnibearing back-blowing air curtain in the inner sleeve pipe, so that smoke in a chimney or a flue is isolated.
2. The non-contact back-blowing dust collector of smoke measuring instrument of claim 1, wherein: the number of the air blowing holes is 12, an included angle of 30 degrees is formed between the air blowing holes and the axis of the inner sleeve, and the air blowing holes are directed to the inner cavity of the mounting flange pipe, so that a negative pressure cavity is formed in the inner sleeve by utilizing the jet flow principle, and all dust particles in the negative pressure cavity are sucked to the vicinity of the air blowing holes through negative pressure and blown to a chimney or a flue through back blowing.
3. The non-contact back-blowing dust collector of smoke measuring instrument of claim 1, wherein: an asbestos pad is arranged between a connecting flange at one end of the back-blowing jacket pipe and the smoke dust measuring instrument so as to improve the sealing effect.
4. A smoke measuring instrument non-contact back-flushing dust removing device according to claim 1 or 3, characterized in that: the back blowing air inlet of the smoke dust measuring instrument is sealed through a sealing plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322270080.XU CN220738967U (en) | 2023-08-23 | 2023-08-23 | Non-contact back-blowing dust remover for smoke dust measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322270080.XU CN220738967U (en) | 2023-08-23 | 2023-08-23 | Non-contact back-blowing dust remover for smoke dust measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220738967U true CN220738967U (en) | 2024-04-09 |
Family
ID=90549688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322270080.XU Active CN220738967U (en) | 2023-08-23 | 2023-08-23 | Non-contact back-blowing dust remover for smoke dust measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220738967U (en) |
-
2023
- 2023-08-23 CN CN202322270080.XU patent/CN220738967U/en active Active
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| GR01 | Patent grant |