CN206990281U - A kind of flue gas sampling probe and purging system - Google Patents
A kind of flue gas sampling probe and purging system Download PDFInfo
- Publication number
- CN206990281U CN206990281U CN201720651759.5U CN201720651759U CN206990281U CN 206990281 U CN206990281 U CN 206990281U CN 201720651759 U CN201720651759 U CN 201720651759U CN 206990281 U CN206990281 U CN 206990281U
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- sampling
- sampling probe
- purging system
- probe
- wall
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Abstract
The utility model provides a kind of flue gas sampling probe and purging system,Including sampling apparatus,Inner wall blowing system,Outer wall purging system,Compressed air system,Gas extraction system,The sampling apparatus includes sampling box,Sampling probe,Heating tube,Filter core,Thief rod,The sampling box is arranged on outside sampling probe,The heating tube is arranged on sampling probe surface,It is inside and outside that the inner wall blowing system and outer wall purging system are separately mounted to filter core,The compressed air system has heater to be used for heated compressed air,In the external heating tube of sampling probe and sampling box,On the one hand prevent sample gas from just having gone out sampling probe and just having condensed,On the other hand rain-proof effect is played,Compressed air after heating,Prevent from causing probe tube temperature rapid decrease to cause pipeline blockage in purging,Inner and outer wall purging system can make an overall screening dust in filter core,Prevent sampling probe from blocking,Efficiently solve probe blockage problem,Realize the sampling works of CEMS in the presence of a harsh environment.
Description
Technical field
It the utility model is related to thermal power plant's denitration flue gas system apparatus field, and in particular to a kind of flue gas sampling probe and blow
Sweep system.
Background technology
Flue gas discharge continuous monitoring system（Abbreviation CEMS）It is to be promoted in recent years to adapt to national environmental protection management needs
A kind of pollutant on-line monitoring system.SO2, O2, NOX, flue dust, flow, temperature, pressure are tested according to needed for thermal power plant's flue gas
The requirement of the indices such as power, humidity.Smoke sampling method is mainly divided to two major classes at present：The direct method of measurement and extraction method, and take out
Follow the example of and be divided into direct extraction and dilution method, direct extraction is exactly to carry out heating guarantor to the flue gas of extraction by heating tube
Temperature, ensure flue gas do not condensed in probe tube, deliver to analysis meter again after condensed, drys, ash disposal, due to its degree of accuracy height,
A little repair, without the dangerous, reason such as security is good, turn into the development trend that cigarette (gas) dirt is tested from now on.
At present, sample flow will soon occur for the sampling probe of use and purging system low again, open and find
Sampling probe outer wall dust stratification is serious, and inwall is almost ashless, secondly using the compressed air of normal temperature, in the winter time regular purge
When can cause probe tube temperature reduce about 40 DEG C, make pipeline continuous heating, be easily damaged probe tube, finally purge after electricity
Move ball valve to open, the compressed air of accumulation rapidly enters pretreatment unit in probe tube, easily causes sampling line and disengages and divide
Analyzer table is damaged, and considerably increases the workload of maintainer, and consumptive material expense is overhauled in increase, and long-time environment protection digital is exceeded or different
It may be often negatively affected to company's environmental protection aspect.
The content of the invention
In order to solve the above-mentioned technical problem the utility model provides a kind of flue gas sampling probe and purging system, solves spy
Head blockage problem, realizes the sampling work of CEMS pretreatment systems in the presence of a harsh environment.
The technical solution of the utility model is：A kind of flue gas sampling probe and purging system, including sampling apparatus, inwall blow
Sweep system, outer wall purging system, compressed air system, gas extraction system, the sampling apparatus includes sampling box, sampling probe, add
Heat pipe, filter core, thief rod, the sampling box are arranged on outside sampling probe, and the heating tube is arranged on sampling probe surface, institute
State inner wall blowing system and outer wall purging system is separately mounted to that filter core is inside and outside, and the compressed air system has heating to fill
Put and be used for heated compressed air.
Further, a kind of flue gas sampling probe and purging system, the purging system are controlled scheme by PLC.
Further, a kind of flue gas sampling probe and purging system, the filter core use silicon carbide ceramics to scheme.
Further, a kind of flue gas sampling probe and purging system, the sampling feeler lever is stainless using φ 40mm for scheme
Steel pipe, length 2m.
Further, a kind of flue gas sampling probe and purging system, the heating tube temperature control is at 150 DEG C for scheme.
The beneficial effects of the utility model are：
1. the utility model in the external heating tube of sampling probe and sampling box, on the one hand prevents sample gas from just having gone out sampling probe just
Condense, on the other hand play rain-proof effect；
2. the utility model is passed through the compressed air after heating, prevent from causing probe tube temperature rapid decrease in purging
Cause pipeline blockage；
3. inner and outer wall purging system of the present utility model can make an overall screening dust in filter core, prevent sampling probe from blocking up
Plug.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Clearly complete description is done to the utility model below in conjunction with the accompanying drawings, so that those skilled in the art is not needing
Under conditions of making creative work, it can fully implement the utility model.
Specific embodiment of the present utility model is：A kind of flue gas sampling probe and purging system, including sampling apparatus, it is interior
Wall purging system 5, outer wall purging system 6, compressed air system 12, gas extraction system 11, the sampling apparatus include sampling box 1,
Sampling probe 3, heating tube 2, filter core 4, thief rod 13, the sampling box 1 are arranged on outside sampling probe 3, and the heating tube 2 is pacified
Mounted in the surface of sampling probe 3, it is inside and outside that the inner wall blowing system 5 and outer wall purging system 6 are separately mounted to filter core 4,
The compressed air system 12 has heater to be used for heated compressed air.
Further, a kind of flue gas sampling probe and purging system, the purging system are controlled scheme by PLC.
Further, a kind of flue gas sampling probe and purging system, the filter core 4 use silicon carbide ceramics to scheme, filtering
Precision makes the dust overwhelming majority in flue be blocked in the outer surface of filter core 4 up to 5um.
Further, a kind of flue gas sampling probe and purging system, the sampling feeler lever 14 use φ 40mm not to scheme
Become rusty steel pipe, length 2m, can measure measuring point representative in flue.
Scheme further, at 150 DEG C prevent by a kind of flue gas sampling probe and purging system, the temperature control of heating tube 2
Only sample gas has just gone out sampling probe 3 with regard to condensing.
The concrete operating principle of the utility model purging system is：Purging system is controlled by PLC, electrical ball valve 9 closes 5S
The inner wall blowing magnetic valve 8 of inner wall blowing system, which is opened, afterwards carries out the inner wall blowing of filter core 4, and outer wall purge solenoid valve 7 is beaten after 10S
Open, carry out the outer wall of filter core 4 purging 10S, purging 15S again after outer wall purging stopping 5S stopping 5S, finally purges 25S, inner wall blowing electricity
Magnet valve 8, outer wall purge solenoid valve 7 are turned off, and exhaust solenoid valve 10 opens 5S, the high-pressure compressed air that will be gathered in probe tube
Fast evacuation, electrical ball valve 9 is opened after 2S, and system starts to sample, and heating tube heating and temperature control is 150 in sampling process
℃。
Preferred embodiment of the present utility model is described above, it should be pointed out that the utility model not office
It is limited to above-mentioned particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as using the common side in this area
Formula is practiced；Any those skilled in the art, in the case where not departing from technical solutions of the utility model ambit, foundation
The technical essence of the utility model still falls within this to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of the protection of utility model technical scheme.
Claims (5)
1. a kind of flue gas sampling probe and purging system, it is characterised in that including sampling apparatus, inner wall blowing system, outer wall blows
Sweep system, compressed air system, gas extraction system, the sampling apparatus includes sampling box, sampling probe, heating tube, filter core, sampling
Bar, the sampling box are arranged on outside sampling probe, and the heating tube is arranged on sampling probe surface, the inner wall blowing system
It is inside and outside to be separately mounted to filter core with outer wall purging system, the compressed air system have heater be used for heat compression
Air.
2. a kind of flue gas sampling probe according to claim 1 and purging system, it is characterised in that the purging system by
PLC is controlled.
3. a kind of flue gas sampling probe according to claim 1 and purging system, it is characterised in that the filter core uses carbon
SiClx ceramics.
4. a kind of flue gas sampling probe according to claim 1 and purging system, it is characterised in that the sampling feeler lever is adopted
With φ 40mm stainless steel tube, length 2m.
5. a kind of flue gas sampling probe according to claim 1 and purging system, it is characterised in that the heating tube temperature
Control is at 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720651759.5U CN206990281U (en) | 2017-06-07 | 2017-06-07 | A kind of flue gas sampling probe and purging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720651759.5U CN206990281U (en) | 2017-06-07 | 2017-06-07 | A kind of flue gas sampling probe and purging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206990281U true CN206990281U (en) | 2018-02-09 |
Family
ID=61396303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720651759.5U Expired - Fee Related CN206990281U (en) | 2017-06-07 | 2017-06-07 | A kind of flue gas sampling probe and purging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206990281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897027A (en) * | 2020-07-22 | 2020-11-06 | 中国石油化工股份有限公司 | Anti-blocking detection cleaning device and method for CEMS probe |
-
2017
- 2017-06-07 CN CN201720651759.5U patent/CN206990281U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897027A (en) * | 2020-07-22 | 2020-11-06 | 中国石油化工股份有限公司 | Anti-blocking detection cleaning device and method for CEMS probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20190607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |