CN207585975U - A kind of polluted gas continuous sampling device - Google Patents
A kind of polluted gas continuous sampling device Download PDFInfo
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- CN207585975U CN207585975U CN201721617446.4U CN201721617446U CN207585975U CN 207585975 U CN207585975 U CN 207585975U CN 201721617446 U CN201721617446 U CN 201721617446U CN 207585975 U CN207585975 U CN 207585975U
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- gas
- collection
- sampling
- sampler
- purging
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Abstract
The utility model discloses a kind of polluted gas continuous sampling devices, including sampling system, unperturbed samples blow device and gas continuous on-line analysis cabinet, sampling system includes upsampling filter, thief rod and sampler, upsampling filter is connected by thief rod with sampler, unperturbed sampling blow device includes collection air filter, gas collection bar and gas collection purging device, it is connected between collection air filter and gas collection purging device by gas collection bar, it is connected between sampler and gas continuous on-line analysis cabinet by sampling pipe, it is connected and equipped with upsampling filter blow down valve by scavenging conduit between sampler and gas collection purging device, gas collection purging device connects compressed air gas source pipe by tracheae, collection air filter blow down valve is equipped between the gas collection purging device and external compression air source.The polluted gas continuous sampling device effectively improves purging performance, largely improves the availability of equipment, improves the accuracy of control process and the accuracy of metering.
Description
Technical field：
The utility model is related to a kind of polluted gas continuous sampling devices, are related to polluted gas sampling monitoring technical field.
Background technology：
It is mainly carried out on the market using CEMS systems namely flue gas automatic monitored control system at present automatic in real time to gas progress
Monitoring, and usually require to sample CEMS systems connection sampling apparatus, then carry out gas sampling and detect, and flue gas is adopted
Sample device is the important composition component in sampling apparatus, is that equipment used, mesh are detected in gaseous contamination source in stationary source flue gas
Preceding flue gas sampler on the market generally includes the sampling of feeler lever, prefilter, back-blowing device, electric heating tube in drier thermostat
Device, and due to containing solid particulate matter and colloidal solid in flue gas, it can be gathered on prefilter, need regular purge, to protect
Demonstrate,prove sampling flow.Current blow device is first turned off sampling valve when purging, stop sampling pump pumping work, then open purge gass
Source is purged to prefilter from sampler by heating unit, closes source purge gas after the completion of purging, open sampling valve and start
Sampling pump so far purges work step and completes, and this process needs to take 3 minutes or so, during which continuous online gas monitoring instrument
The sample gas analyzed in table is static immobilising, therefore the data exported maintain sample gas concentration value before purging, then continue to sample
It is analyzed in gas to instrument, what is be also just full of in sampling valve to the pipeline between prefilter and purging device at this moment is purge gass
Body, from compressed air, the same air of ingredient, and temperature is relatively low, eliminates certain clean gas of impurity, and pressure is
0.5MPa, and these compressed airs be sent to analyzer detection when, can influence instrument detection measure, this influence measure when
Between it is directly proportional to staying in the air volume in sampling system and sampling pump discharge be inversely proportional, the time be 3-17 minutes, in addition, due to
Compressed air temperature is relatively low, and temperature is especially big on denitrating system detection influence, because of 300 DEG C higher than air of sample gas or more, makes
Condensation water dew and acid dew in into fractional-sample pipeline during SO2 gases are soluble easily in water, cause instrument output SO2 concentration less than normal, need
Just restore after several minutes normal；In the measuring system for especially measuring the escaping of ammonia in catalytic reduction method, denitration built in sampler is urged
Agent is cooled, and influences denitration efficiency, and ammonia density is caused, which to restore normal measure, to be needed to undergo 15 minutes or more time.Therefore, instrument
The pollutant concentration that device detects is noncontinuity, and the detection data of this noncontinuity is fatal in technical process control
, control is caused to interrupt, the disturbance of process system cannot be adjusted during this period, in addition, in pollutant concentration and total amount
Metering in, by interrupt lack, influence metering accuracy.
Utility model content：
Technical problem to be solved in the utility model is：It is simple in structure to provide one kind, installation is easy to make and can be effective
Improve the continuous sampling device of the continuous detection result of polluted gas.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：
A kind of polluted gas continuous sampling device continuously exists including sampling system, unperturbed sampling blow device and gas
Line analysis cabinet, the sampling system include upsampling filter, thief rod and sampler, and the upsampling filter is placed in be sampled
Flue in, the sampler is located at outside flue, and the upsampling filter is connected by thief rod with sampler, the unperturbed
It samples blow device and includes collection air filter, gas collection bar and gas collection purging device, the collection air filter is placed in flue, described
Gas collection purging device is placed in outside flue, is connected between the collection air filter and gas collection purging device by gas collection bar, the sampler
It is connected by sampling pipe between gas continuous on-line analysis cabinet, is connected between the sampler and gas collection purging device by scavenging conduit
Lead to and equipped with upsampling filter blow down valve, the gas collection purging device passes through tracheae and connects compressed air gas source pipe, the collection air-blowing
It sweeps and collection air filter blow down valve is equipped between device and external compression air source.
Preferably, gas collecting apparatus and blow device are equipped in the gas collection purging device, gas collecting apparatus connection gas collection bar,
Blow device connects scavenging conduit.
Preferably, the gas collecting apparatus is set as collection air pump.
Preferably, the sampling pipe is equipped with sampling valve.
Preferably, the compressed air gas source pipe, which is equipped with, is filtered under diminished pressure unit.
Preferably, compressed gas source pressure caused by the compressed air gas source pipe is set as 0.5MPa-0.6MPa.
Preferably, the upsampling filter blow down valve, collection air filter blow down valve are disposed as solenoid valve.
Compared with prior art, the usefulness of the utility model is：The polluted gas continuous sampling device can be protected
The detection performance of original CEMS systems is demonstrate,proved, and purging performance can be improved, the availability of equipment is largely improved, improves control
The accuracy of process and the accuracy of metering are made larger contribution for environmental emission reduction, smoke gas treatment, are adopted in practical applications
With the flue gas of active procedure once blow clearly, i.e., blowback cleaning is carried out to sampler, reduce between air and sample gas due to dense
Angle value great disparity, temperature it is different and to the interference of measuring system, avoid the purge gas under room temperature to sampler, thief rod and adopt
The cooling effect of sample probe heating furnace etc., and to be formed on each metal surface of these parts of appliance and smoke contacts after purging
Acid dew, equipment is by H2SO4Deep-etchings are waited, gelinite substance blocks prefilter, and then shortens the working life, using this practicality
The advantages of after novel, is as follows：
1. ensure that the continuity of measurement, also ensure the continuity of technology controlling and process；
2. be conducive to the calculating of the accurate measurement and total emission volumn of pollutant；
3. improving purging efficiency, shorten time and the frequency for blowing particulate matter clearly, further improve the continuity of measurement；
4. extend the service life and maintenance period of sampling system, it is cost-effective.
Description of the drawings：
The utility model is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Specific embodiment：
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained without making creative work belong to
The range of the utility model protection：
A kind of polluted gas continuous sampling device as shown in Figure 1, is mainly used in polluted gas, in the present embodiment,
Using flue gas as continuous sampling, analysis and detection polluted gas, connect including sampling system, unperturbed sampling blow device and gas
Continuous on-line analysis cabinet 1, the sampling system includes upsampling filter 2, thief rod 3 and sampler 4, and the upsampling filter is put
In in flue 5 to be sampled, the sampler 4 is located at outside flue 5, and the upsampling filter 2 passes through thief rod 3 and sampler
4 connections, the upsampling filter mainly include feeler lever, prefilter, back-blowing device, electric-heating constant temperature device in sampler, in advance
Filling filtrate in filter to prevent interference of the particle to smoke absorption, thus contains solid particulate matter and colloid in flue gas
Grain can gather on prefilter, need regular purge, ensure sampling flow.
The unperturbed sampling blow device includes collection air filter 6, gas collection bar 7 and gas collection purging device 8, the gas collection mistake
Filter 6 is placed in flue, and the gas collection purging device is placed in outside flue, is passed through between the collection air filter 6 and gas collection purging device 8
Gas collection bar connects, and further, gas collecting apparatus 81 and blow device 82, gas collecting apparatus connection is equipped in the gas collection purging device
Gas collection bar, blow device connection scavenging conduit, preferably, the gas collecting apparatus is set as collection air pump, the purging
There is in device pressing mechanism, therefore, in practical applications, by gas collection pump startup and pass through and collect air filter and acquire in flue
Gas, and pass through gas collection bar transmission then export to blow device, and blow device connection sampler, then by the cigarette of acquisition
Gas in road pressurizes blowback to smoke filter by blow device, the blowback cleaning process to filter is realized, in addition, phase
For existing common blow device, considerably reduce the gaseous state generally occurred during existing CEMS is measured and measure object generation mutation
Situation, and due to cooling effect of the purge gas under room temperature to sampler, thief rod and sampling probe heating furnace etc., make to adopt
Acid dew, H are formed in these equipment at sample initial stage2SO4Wait deep-etchings object etching apparatus, condensation colloid substance, shorten the working life and
Maintenance period, and the present apparatus can effectively avoid detection interference time caused by above-mentioned reason, then controllers can automatically adjust
Control system avoids the blind area of control, then effectively realizes continuous monitoring and the detection of pollutant.
It is connected, then realized continuous online by sampling pipe 9 between the sampler 4 and gas continuous on-line analysis cabinet 1
Detection in real time is connected and by scavenging conduit equipped with upsampling filter blow down valve 10, institute between the sampler and gas collection purging device
It states gas collection purging device and compressed air gas source pipe is connected by tracheae, collection is equipped between the gas collection purging device and external compression air source
Air filter blow down valve 11, and sampling pipe is equipped with sampling valve 12.
Further, to improve stability during compressed air output, the compressed air gas source pipe is equipped with and depressurized
Unit 13 is filtered, compressed gas source pressure caused by the compressed air gas source pipe is set as 0.5MPa-0.6MPa.
In addition, being carried out automatically controlling for convenience of control to control valve, the upsampling filter blow down valve, collection air filter are blown
It sweeps valve and is disposed as solenoid valve, the upsampling filter blow down valve, collection air filter blow down valve sample purging dress by unperturbed
Put controller control operation.
Therefore, in practical applications, start blowback process, stop sampling, close sampling valve, open upsampling filter purging
Valve, start unperturbed sampling blow device, by unperturbed sample blow device gas collection and pressure process, to upsampling filter into
Row purging, it is to be purged to finish, upsampling filter blow down valve is closed, opens sampling valve；Then unperturbed blow device is blown clearly, opened
Collect air filter blow down valve, then conveyed in compressed gas to gas collection purging device by compressed air gas source pipe and gas collection is purged
Device, gas collection bar, collection air filter are purged, and collection air filter blow down valve is closed after purging, and the gas collection for then waiting for next time is anti-
It blows.
The polluted gas continuous sampling device is once blown clearly using the flue gas progress of active procedure, i.e., sampler is carried out
Blowback cleans, reduce between air and sample gas due to concentration value great disparity, temperature is different and to the interference of measuring system, in addition, adopting
Unperturbed blow device is carried out with compressed air it is secondary blow clearly, unperturbed blow device in itself have self-cleaning function, extend use
Service life saves maintenance cost, reduces maintenance period, cost-effective, thus with higher practicability and economic benefit, is suitble to push away
Wide application.
It is emphasized that：The above is only the preferred embodiment of the present utility model, and not the utility model is appointed
What formal limitation, every any simple modification made according to the technical essence of the utility model to above example, etc.
With variation and modification, in the range of still falling within technical solutions of the utility model.
Claims (7)
1. a kind of polluted gas continuous sampling device, it is characterised in that：Including sampling system, unperturbed sampling blow device and gas
Body continuous on-line analysis cabinet, the sampling system include upsampling filter, thief rod and sampler, and the upsampling filter is put
In in flue to be sampled, the sampler is located at outside flue, and the upsampling filter is connected by thief rod with sampler,
The unperturbed sampling blow device includes collection air filter, gas collection bar and gas collection purging device, and the collection air filter is placed in cigarette
In road, the gas collection purging device is placed in outside flue, is connected between the collection air filter and gas collection purging device by gas collection bar, institute
It states and is connected between sampler and gas continuous on-line analysis cabinet by sampling pipe, passed through between the sampler and gas collection purging device
Scavenging conduit connects and equipped with upsampling filter blow down valve, and the gas collection purging device connects compressed air gas source pipe, institute by tracheae
It states and collection air filter blow down valve is equipped between gas collection purging device and external compression air source.
2. a kind of polluted gas continuous sampling device according to claim 1, it is characterised in that：In the gas collection purging device
Equipped with gas collecting apparatus and blow device, gas collecting apparatus connection gas collection bar, blow device connection scavenging conduit.
3. a kind of polluted gas continuous sampling device according to claim 2, it is characterised in that：The gas collecting apparatus setting
To collect air pump.
4. a kind of polluted gas continuous sampling device according to claim 1, it is characterised in that：The sampling pipe is equipped with
Electromagnetism sampling valve.
5. a kind of polluted gas continuous sampling device according to claim 1, it is characterised in that：The compressed air gas source
Pipe is equipped with and is filtered under diminished pressure unit.
6. a kind of polluted gas continuous sampling device according to claim 5, it is characterised in that：The compressed air gas source
Compressed gas source pressure is set as 0.5MPa-0.6MPa caused by pipe.
7. a kind of polluted gas continuous sampling device according to claim 1, it is characterised in that：The upsampling filter is blown
Sweep valve, collection air filter blow down valve is disposed as solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617446.4U CN207585975U (en) | 2017-11-28 | 2017-11-28 | A kind of polluted gas continuous sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617446.4U CN207585975U (en) | 2017-11-28 | 2017-11-28 | A kind of polluted gas continuous sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN207585975U true CN207585975U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721617446.4U Expired - Fee Related CN207585975U (en) | 2017-11-28 | 2017-11-28 | A kind of polluted gas continuous sampling device |
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| Country | Link |
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| CN (1) | CN207585975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702952A (en) * | 2017-11-28 | 2018-02-16 | 倪月舟 | A kind of dusty gas continuous sampling device |
-
2017
- 2017-11-28 CN CN201721617446.4U patent/CN207585975U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702952A (en) * | 2017-11-28 | 2018-02-16 | 倪月舟 | A kind of dusty gas continuous sampling device |
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Granted publication date: 20180706 Termination date: 20211128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |