CN214096791U - High-temperature high-dust sampling probe - Google Patents
High-temperature high-dust sampling probe Download PDFInfo
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- CN214096791U CN214096791U CN202023181168.7U CN202023181168U CN214096791U CN 214096791 U CN214096791 U CN 214096791U CN 202023181168 U CN202023181168 U CN 202023181168U CN 214096791 U CN214096791 U CN 214096791U
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Abstract
The utility model provides a high temperature high dust sampling probe, include: the tubulose casing, the inside sampling tube that is provided with of tubulose casing is provided with the bar-shaped filter core with the direction syntropy of taking a sample in the sampling tube, still including setting up the sealed lid in the outside of tubulose casing, sealed inside being provided with of lid with the inside first gas circuit of the inside intercommunication of bar-shaped filter core in the sampling tube and with the second gas circuit of the clearance intercommunication that exists between sampling tube inner wall and filter core. The utility model provides a high temperature high dust sampling probe, when sampling system carries out the blowback, the blowback gas of the same kind gets into by sealed L type pipe of covering with the clearance intercommunication of filter core outer wall and sampling tube inner wall, and another way blowback gas gets into by sealed L type pipe of covering with the filter core inner wall intercommunication, by interior and carry out the blowback outward, detach and attach to the inside particulate matter of filter core. The back flushing is carried out alternately inside and outside, thus avoiding the blockage of the air passage under the high-dust working condition.
Description
Technical Field
The utility model relates to a combustion apparatus technical field especially relates to a high temperature high dust sampling probe.
Background
The sampling probe is a sampling part of a device for monitoring smoke components in the industrial production process. When monitoring facilities extracted the appearance gas in the flue, the particulate matter in the appearance gas can block up the sample pipeline, consequently need install the filter core in sampling probe and avoid above-mentioned condition. The existing sampling probe can deal with the process occasion with lower particulate matter content, and once the particulate matter content exceeds a certain range, the particulate matter attached to the probe filter element cannot be completely swept, so that the gas circuit is blocked. Because the flue gas conditions of all process positions are different, the flue gas temperature in some occasions is very high, the existing sampling probe is difficult to use, and the purpose of sampling cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a high temperature and high dust sampling probe.
The utility model provides a high temperature high dust sampling probe, include: the tubulose casing, the inside sampling tube that is provided with of tubulose casing is provided with the bar-shaped filter core with the direction syntropy of taking a sample in the sampling tube, still including setting up the sealed lid in the outside of tubulose casing, sealed inside being provided with of lid with the inside first gas circuit of the inside intercommunication of bar-shaped filter core in the sampling tube and with the second gas circuit of the clearance intercommunication that exists between sampling tube inner wall and filter core.
Adopt above-mentioned technical scheme the utility model discloses compare with prior art, have following advantage:
when the sampling system carries out back flushing, one path of back flushing gas enters from an L-shaped pipe which is arranged on the sealing cover and communicated with the gap between the outer wall of the filter element and the inner wall of the sampling tube, the other path of back flushing gas enters from an L-shaped pipe which is arranged on the sealing cover and communicated with the inner wall of the filter element, and back flushing is carried out from inside to outside to remove particles attached to the inside of the filter element. The back flushing is carried out alternately inside and outside, thus avoiding the blockage of the air passage under the high-dust working condition.
Preferably, the present invention further provides:
preferably, the heater is installed to the sampling tube outer wall, and the heater outer parcel has the heat preservation. Because of the existence of the heater, the temperature during back flushing can not be reduced too much, and the phenomenon that the condensed water and the particles are fixed on the surface of the filter element after being mixed on the surface of the filter element is avoided.
Preferably, the inner wall of the sampling tube arranged in the tubular housing is provided with a plurality of annular grooves. The back flushing airflow forms pulse airflow to blow towards the outer wall of the filter element when flowing through the plurality of grooves on the inner wall of the sampling pipe, the airflow directly impacts dust on the outer wall of the filter element, and the situation that the back flushing airflow of a common probe is parallel to the filter element to flow and all particles on the outer surface of the filter element cannot be efficiently removed is avoided.
Preferably, the tubular housing further comprises a sampling probe in communication with the interior of the sampling tube.
Preferably, the sampling probe rod is sleeved with a dust cover at the air inlet.
Preferably, still including setting up having the cooling tube between sampling tube and sample probe-rod, the gas circuit that this cooling tube inside set up forms a airtight sample gas circuit with the gas circuit that the inside gas circuit that sets up of sample probe-rod and the inside gas circuit that sets up of sample tube.
Preferably, a radiator disposed around the radiating pipe is further included. The sample gas flows through the radiator part in the sampling pipe, so that the temperature is reduced, and the over-high temperature after flowing into the sampling gas circuit is prevented. And finally, the water flows to the filter element, the filter element filters out the rest particulate matters, most of the particulate matters can be attached to the outer surface of the filter element, and a small part of the particulate matters is attached to the inner wall of the sampling tube.
Preferably, the filter element is mounted on a first air passage communicating with the inside of the rod-shaped filter element by means of a screw connection.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a high-temperature and high-dust sampling probe according to an embodiment of the present invention.
Fig. 2 is an exploded view of a high temperature and high dust sampling probe according to an embodiment of the present invention.
In the figure: 1-a sealing cover, 2-a filter element, 3-a sampling tube, 4-a heater, 5-a heat preservation layer, 6-a radiating tube, 7-a radiator, 8-a sampling probe rod, 9-a flange, 10-a dustproof cover, 11-a rainproof cover, 12-a tubular shell, 13-a first gas path and 14-a second gas path.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1-2, the utility model provides a high temperature and high dust sampling probe, include: a tubular housing 12 and a sealing cover with double L-shaped air passages. A sampling tube 3 is arranged in the tubular shell 12, and a rod-shaped filter element 2 in the same direction as the sampling direction is arranged in the sampling tube 3; the sealing cover with double L-shaped air channels is arranged outside the tubular shell 12, and a first air channel communicated with the inside of the rod-shaped filter element 2 in the sampling tube 3 and a second air channel communicated with a gap between the inner wall of the sampling tube 3 and the filter element 2 are arranged inside the sealing cover. The filter element 2 is installed on the installation position of the L-shaped air passage of the sealing cover 1 through threaded connection. The sealing cover 1 and the filter element 2 are inserted into the sampling tube 3 after being assembled and fixed by screws. The sampling tube 3 is used as an inner blowback tube when sampling is not carried out, the inner blowback and the outer blowback are carried out alternately, and the filter element is blown outwards from the inside, so that the integral particles of the filter element are blown completely.
The heater 4 is installed on the outer wall of the sampling tube 3, the heater 4 can be a ceramic heating body, and the heat preservation layer 5 wraps the outside of the heater 4. The heater 4 works when the temperature of the probe is lower than 100 ℃, so that the temperature in the probe sampling tube is always higher than the dew point, the moisture is prevented from being condensed when the temperature is low, and the moisture is fixed on the surface of the filter element after being mixed with particles in the sampling tube and cannot be removed. The heat insulation layer 5 prevents the temperature of the heater 4 from being excessively diffused, and accelerates the heating process.
The inner wall of the sampling tube 3, which is arranged in the tubular housing 12, has a plurality of annular grooves. When the sampling system carries out the blowback, the blowback gas of the same kind gets into by sealed L type pipe of covering with the clearance intercommunication of filter core outer wall and sampling tube inner wall, forms pulse type air current when blowning through sampling tube inner wall multichannel recess and blows to the filter core outer wall, and the dust of filter core outer wall is directly strikeed to the air current, has avoided probe blowback air current commonly used to be on a parallel with the filter core flow, the unable high efficiency condition of detaching the whole particulate matters of filter core surface.
The tubular housing 12 further comprises a sampling probe 8 communicating with the interior of the sampling tube 3.
The air inlet of the sampling probe rod 8 is sleeved with a dust cover. Dust cover 10 is located the export of sample probe rod 8, when taking a sample, the dust cover stops to fall partly particulate matter and the big granule of some particle diameters earlier, reduces the filter core burden, prolongs the time of single sample circulation.
Still including setting up the cooling tube between sampling tube and sample probe rod, the inside gas circuit that sets up of this cooling tube forms a airtight sample gas circuit with the inside gas circuit that sets up of sample probe rod and the inside gas circuit that sets up of sampling tube. And a radiator 7 disposed around the radiating pipe. The installation purpose of cooling tube 6 and radiator 7 is to reduce the temperature of appearance gas, because the flue gas temperature is very high in the pipeline, directly gets into the easy damage of sample pipeline through the heat dissipation and encircles the sampling tube, and 7 length of radiator can change along with technology environmental change, guarantee probe life-span and safe in utilization.
As shown in fig. 2, both ends are provided with the flange respectively about sampling tube 3, cooling tube 6, and 8 middle parts of sampling probe rod are provided with the flange, and sampling probe rod 8 passes the hole of flange center department, and sealed lid is installed on the flange of 3 upper ends of sampling tube, and sampling tube 3 and cooling tube 6 pass through flange joint, and the flange that 3 lower extremes of sampling tube set up and the flange that 8 middle parts of sampling probe rod set up pass through bolted connection.
The working principle is as follows:
when the utility model is used, firstly, the sampling probe is arranged in a high-temperature and high-dust occasion, and partial particles are removed from the dust cover before sample gas enters the probe from the probe rod; then, the sample gas flows through the radiator part in the sampling pipe, so that the temperature is reduced, and the overhigh temperature after flowing into the sampling gas circuit is prevented; finally, flow to the filter core, the remaining particulate matter is filtered to the filter core, and most particulate matter can be attached to the filter core surface, and a small part is attached to the sampling tube inner wall.
When the sampling system performs back flushing, one path of back flushing air enters from an L-shaped pipe which is arranged on a sealing cover and is communicated with a gap between the outer wall of the filter element and the inner wall of the sampling pipe, pulse-type air flow is formed when the back flushing air flows through a plurality of grooves on the inner wall of the sampling pipe and blows towards the outer wall of the filter element, and the air flow directly impacts dust on the outer wall of the filter element, so that the situation that the back flushing air flow of a common probe flows in parallel to the filter element and all particles on the outer surface of the filter element cannot be efficiently removed is avoided; the other path of back blowing gas enters from an L-shaped pipe which is arranged on the sealing cover and communicated with the inner wall of the filter element, and back blowing is carried out from inside to outside to remove particles attached to the inside of the filter element; the back flushing is carried out alternately inside and outside, thus avoiding the blockage of the air passage under the high-dust working condition.
Meanwhile, due to the existence of the heater, the temperature during back flushing can not be reduced too much, and the phenomenon that condensed water and particles are mixed and then fixed on the surface of the filter element is avoided.
The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A high temperature, high dust sampling probe, comprising: the utility model discloses a tubular casing, the inside sampling tube that is provided with of tubular casing, be provided with in the sampling tube with the bar-shaped filter core of sample direction syntropy, its characterized in that still including setting up the sealed lid in tubular casing outside, sealed inside be provided with the inside first gas circuit of intercommunication of bar-shaped filter core in the sampling tube and with the second gas circuit of the clearance intercommunication that exists between sampling tube inner wall and filter core of covering.
2. A high temperature, high dust sampling probe according to claim 1, wherein: the outer wall of the sampling tube is provided with a heater, and the outer layer of the heater is wrapped with a heat-insulating layer.
3. A high temperature, high dust sampling probe according to claim 1, wherein: the inner wall of the sampling tube arranged in the tubular shell is provided with a plurality of annular grooves.
4. A high temperature, high dust sampling probe according to claim 1, wherein: the tubular housing further includes a sampling probe in communication with the interior of the sampling tube.
5. A high temperature, high dust sampling probe according to claim 4, wherein: the dust cover is sleeved at the air inlet of the sampling probe rod.
6. A high temperature and high dust sampling probe according to claim 4 or 5, wherein: still including setting up the cooling tube between sampling tube and sample probe rod, the inside gas circuit that sets up of this cooling tube forms a airtight sample gas circuit with the inside gas circuit that sets up of sample probe rod and the inside gas circuit that sets up of sampling tube.
7. A high temperature, high dust sampling probe according to claim 6, wherein: also comprises a radiator arranged around the radiating pipe.
8. A high temperature, high dust sampling probe according to claim 1, wherein: the filter element is installed on a first air path communicated with the inside of the rod-shaped filter element through threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023181168.7U CN214096791U (en) | 2020-12-25 | 2020-12-25 | High-temperature high-dust sampling probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023181168.7U CN214096791U (en) | 2020-12-25 | 2020-12-25 | High-temperature high-dust sampling probe |
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| Publication Number | Publication Date |
|---|---|
| CN214096791U true CN214096791U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023181168.7U Active CN214096791U (en) | 2020-12-25 | 2020-12-25 | High-temperature high-dust sampling probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279774A (en) * | 2021-12-27 | 2022-04-05 | 大唐环境产业集团股份有限公司 | Smoke sampling probe companion heat protection device |
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2020
- 2020-12-25 CN CN202023181168.7U patent/CN214096791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279774A (en) * | 2021-12-27 | 2022-04-05 | 大唐环境产业集团股份有限公司 | Smoke sampling probe companion heat protection device |
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