CN110261540A - Gaseous pollutant sampling probe and its application method with motoring condition switching valve - Google Patents
Gaseous pollutant sampling probe and its application method with motoring condition switching valve Download PDFInfo
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- CN110261540A CN110261540A CN201910444983.0A CN201910444983A CN110261540A CN 110261540 A CN110261540 A CN 110261540A CN 201910444983 A CN201910444983 A CN 201910444983A CN 110261540 A CN110261540 A CN 110261540A
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- 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
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0022—General constructional details of gas analysers, e.g. portable test equipment using a number of analysing channels
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Abstract
The invention discloses a kind of gaseous pollutant sampling probe and its application method with motoring condition switching valve, sampling probe includes feeler lever, filter core, filter housing, motoring condition switching valve, valve control module；The moved end of making of valve control module is connect with the spool of motoring condition switching valve；Filter core is mounted on the inside of filter housing；One end of filter housing is fixed with feeler lever, and the other end is then fixed with motoring condition switching valve；And feeler lever, filter housing, motoring condition switching valve are capable of forming the gas circuit of a connection；Motoring condition switching valve is triple valve, can be connected to respectively with standard gas/compressed gas interface, sampling output interface, filter core；Under valve control module control, there are three working conditions, respectively sample states, align mode, blowback state for sampling probe tool；Therefore, apparatus of the present invention solve traditional sampling probe it is big in align mode standard gas consumption, measuring state sampling the big filter core of exhaust gas volumn be easy blocking the problem of.
Description
Technical field
The present invention relates to online environment monitoring Instrument technology field, more particularly to a kind of with motoring condition switching valve
Gaseous pollutant sampling probe, the gaseous pollutant on-line monitoring for the exhaust of electric power, petroleum and chemical industry.
Background technique
According to " HJ 76-2017 stationary source flue gas (SO2、NOX, particulate matter) discharge continuous monitor system technical requirements
And detection method " 5.4.4.2 requirement, it needs " using the gaseous pollutant CEMS for extracting measurement method, to have fixed sum
Convenient for the calibrating gas total system calibration function of operation；Can complete from sample acquire and transmitting device, pre-processing device and
The total system of analysis instrument is calibrated ", the calibrating gas for being accordingly used in analysis instrument calibration should be inputted from probe, by complete
After acquisition, transmission and pretreatment, it is sent in gas analysis instrument, simultaneously as moisture, particulate matter are rich in flue gas, sampling
It further include close filter core in probe, to remove the influence of particulate matter, the sampling of long-time big flow will lead to filter core blocking.Usually
Way be using high pressure gas timing blowback sampling probe so that sampling pathway patency.For this purpose, sampling probe needs at least to integrate
Flue gas sampling, three standard gas calibration, blowback functions.
The flue gas sampling of CEMS system probe, standard gas calibration, blowback share sampling gas channels, the work of sampling probe at present
Make state to be determined by three electromagnetic valve switch states for being connected on calibration standard gas, blowback air and sampling gas output.When instrument is in
When normal measuring state, two calibration standard gas, blowback solenoid valves are closed, and sampling gas delivery valve is opened, in probe sampling flue
Flue gas measures；When instrument is in align mode, blowback solenoid valve is closed, and calibration standard gas, sampling gas delivery valve are opened, school
Quasi- gas injects sampling probe, and a part of standard gas is used for instrument calibration, another part standard gas through over-sampling delivery valve at this time
It is formed and is wasted into flue；The case where flue pressure is in positive pressure, then need to be passed through the Standard Gases of bigger pressure, more various flow
Body just can ensure that instrument samples calibration standard gas pure enough.For this purpose, completing an instrument calibration needs to expend a large amount of valuableness
Calibrating gas.Simultaneously as sampling flow is big, measuring state filter core is easy to be blocked by particulate matter.
Summary of the invention
Goal of the invention: technical problem to be solved by the invention is to provide a kind of, and the gaseous state with motoring condition switching valve is dirty
Object sampling probe is contaminated, the under test gas trend of normal operating conditions and align mode can be accurately controlled, under align mode, entirely
Portion's standard gas enters measuring instrument, and there is no the wasting phenomenons for being released to flue, overcomes traditional sampling probe in align mode mark
Gas consumption is big, holds susceptible to plugging defect in the large-minded filter core of measuring state sampling flue.
To realize that above-mentioned technical purpose, the present invention will take the following technical solution:
A kind of gaseous pollutant sampling probe with motoring condition switching valve, including feeler lever, filter core, filter housing,
Motoring condition switching valve, valve control module；The moved end of making of valve control module is connect with the spool of motoring condition switching valve；Filter
Core is mounted on the inside of filter housing；Wherein:
One end of filter housing is fixed with feeler lever, and the other end is then fixed with motoring condition switching valve；And feeler lever, filter
Shell, motoring condition switching valve are capable of forming the gas circuit of a connection；
Motoring condition switching valve is triple valve, can be connected respectively with standard gas/compressed gas interface, sampling output interface, filter core
It is logical；
Under valve control module control, there are three working conditions, respectively sample states, calibration shape for sampling probe tool
State, blowback state；
When probe is in align mode, sampling output interface is only connect with standard gas/compressed gas by motoring condition switching valve
Mouth connection；
When probe is in align mode, sampling output interface is only connect with standard gas/compressed gas by motoring condition switching valve
Mouth connection；
When probe is in blowback state, standard gas/compressed gas interface is only connected to filter core by motoring condition switching valve.
As the further improvement of above-mentioned gaseous pollutant sampling probe, there are three external streams for motoring condition switching valve tool
Road, respectively external flow path a, external flow path b, external flow path c；
The external flow path a of motoring condition switching valve is docked with the gas outlet of filter housing, outside motoring condition switching valve
Flow path b is met to connect with standard gas/compressed gas interface；The external flow path c of motoring condition switching valve is connect with sampling output interface, energy
It is enough to be connect with heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path a and electricity of motoring condition switching valve
When moving the external flow path c connection of state switching valve, and being truncated with the external flow path b of motoring condition switching valve, sampling probe is in
Sample states, sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electricity of motoring condition switching valve
When moving the external flow path c connection of state switching valve, and being truncated with the external flow path a of motoring condition switching valve, sampling probe is in
Align mode, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, the successively external flow path Jing Guo motoring condition switching valve
B, the external flow path c of motoring condition switching valve, sampling output interface, finally import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electricity of motoring condition switching valve
When moving the external flow path a connection of state switching valve, and being truncated with the external flow path c of motoring condition switching valve, sampling probe is in
Blowback state, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, the successively external flow path Jing Guo motoring condition switching valve
B, after the external flow path a of motoring condition switching valve, filter core is flowed into, flue is finally discharged by feeler lever.
As the further improvement of above-mentioned gaseous pollutant sampling probe, the motoring condition switching valve is electric three passes ball
Valve including four valve seats and is placed in the spools of four valve base cavities；The outer diameter of spool is matched with the internal diameter of four valve base cavities just；
There is T-type flow path on spool；And wherein three valve seats of four valve seats, it is provided with one and is penetrated through with four valve base cavities
External flow path.
Under the actuation of valve control module, the external flow path of the two of them of four valve seats can be connected spool by T-type flow path
It is logical, and a remaining external flow path is then truncated with two above-mentioned external flow paths.
As the further improvement of above-mentioned gaseous pollutant sampling probe, four valve seat is mounted in valve body, and valve body
Be provided with a connection flow path, the one end for connecting flow path is docked with a wherein external flow path for four valve seats, the other end then with filter
The gas outlet of core is connected to；Flow direction of the gas in connection flow path is vertical from the direction that filter core flows out with gas.
Another technical purpose of the invention is to provide a kind of gaseous pollutant sampling spy with motoring condition switching valve
The application method of head, there are three use states, respectively sample states, align mode, blowback state for the probe tool；
When probe is in sample states, feeler lever is only connected to sampling output interface by motoring condition switching valve, at this point,
The external flow path a of motoring condition switching valve is connected to the external flow path c of motoring condition switching valve, and with motoring condition switching valve
External flow path b truncation, sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, import analyzer by heat tracing pipe
Device；
When probe is in align mode, sampling output interface is only connect with standard gas/compressed gas by motoring condition switching valve
Mouth connection；At this point, the external flow path b of motoring condition switching valve is connected to the external flow path c of motoring condition switching valve, and with it is electronic
The external flow path a of state switching valve is truncated, and after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively passes through motoring condition
The external flow path b of switching valve, the external flow path c of motoring condition switching valve, sampling gas interface, finally import analyzer by heat tracing pipe
Device；
When probe is in blowback state, feeler lever is only connected to standard gas/compressed gas interface by motoring condition switching valve；This
When, the external flow path b of motoring condition switching valve is connected to the external flow path a of motoring condition switching valve, and is switched with motoring condition
The external flow path c of valve is truncated, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively by motoring condition switching valve
External flow path b, motoring condition switching valve external flow path a after, flow into filter core, flue is finally discharged by feeler lever.
According to above-mentioned technical solution, compared with the existing technology, the present invention have it is following the utility model has the advantages that
Gaseous pollutant sampling probe of the present invention, can accurately control normal operating conditions and align mode to
Gas trend is surveyed, under align mode, whole standard gas enter measuring instrument, and there is no the wastes for being released to flue.Due to calibration
Gas circuit is completely isolated with flue gas, and the relatively conventional probe of sampling flow substantially reduces, and overcomes traditional sampling probe in calibration shape
State standard gas consumption is big, is easy the problem of blocking in the measuring state sampling large-minded filter core of flue.
Detailed description of the invention
Fig. 1 is gaseous pollutant sampling probe each section explanation；
Fig. 2 is gaseous pollutant sampling probe each section explanation；
Fig. 3 is normal sample states motoring condition switching valve sectional view；
Fig. 4 is standard gas align mode motoring condition switching valve sectional view；
Fig. 5 is compressed gas blowback state motoring condition switching valve sectional view.
Fig. 1 is into Fig. 5,1, feeler lever；1-1, sample gas inlet is adopted；2, filter core；3, filter housing；4, filter core heater； 5,
Motoring condition switching valve；6, ball valve heater；7, heat tracing pipe；8, output interface is sampled；9, standard gas/compressed gas interface.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.Unless specifically stated otherwise, otherwise in these realities
The positioned opposite of component and step described in example, expression formula and numerical value is applied not limit the scope of the invention.Meanwhile it should be bright
White, for ease of description, the size of various pieces shown in attached drawing is not to draw according to actual proportionate relationship.It is right
The technology known to person of ordinary skill in the relevant, method and apparatus may be not discussed in detail, but in the appropriate case, institute
Stating technology, method and apparatus should be considered as authorizing part of specification.In shown here and discussion all examples, appoint
What occurrence should be construed as merely illustratively, not as limitation.Therefore, the other examples of exemplary embodiment can
With different values.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation).
As shown in Fig. 1 to 5, the gaseous pollutant sampling probe of the present invention with motoring condition switching valve, including visit
Bar, filter core, filter housing, motoring condition switching valve, valve control module；Valve control module makees moved end and motoring condition
The spool of switching valve connects；Wherein:
One end of filter housing is fixed with feeler lever, and the other end is then fixed with motoring condition switching valve；And feeler lever, filter
Shell, motoring condition switching valve are capable of forming the gas circuit of a connection；Filter core is mounted on the inside of filter housing, for filtering
Sample the particulate matter in flue gas.
Motoring condition switching valve is triple valve, can be connected respectively with standard gas/compressed gas interface, sampling output interface, filter core
It is logical；
Under valve control module control, there are three working conditions, respectively sample states, calibration shape for sampling probe tool
State, blowback state；
When probe is in align mode, sampling output interface is only connect with standard gas/compressed gas by motoring condition switching valve
Mouth connection；
When probe is in align mode, sampling output interface is only connect with standard gas/compressed gas by motoring condition switching valve
Mouth connection；
When probe is in blowback state, standard gas/compressed gas interface is only connected to filter core by motoring condition switching valve.
It follows that motoring condition switching valve is integrated in probe of the present invention, to switch normal sample, standard gas school
Quasi-, three working conditions of compressed gas blowback.
As shown in Fig. 3 to 5, there are three external flow path, respectively external flow path a, external flow path for motoring condition switching valve tool
B, external flow path c；
The external flow path a of motoring condition switching valve is docked with the gas outlet of filter housing, outside motoring condition switching valve
Flow path b is met to connect with standard gas/compressed gas interface；The external flow path c of motoring condition switching valve is connect with sampling output interface, energy
It is enough to be connect with heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path a and electricity of motoring condition switching valve
When moving the external flow path c connection of state switching valve, and being truncated with the external flow path b of motoring condition switching valve, sampling probe is in
Sample states, sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electricity of motoring condition switching valve
When moving the external flow path c connection of state switching valve, and being truncated with the external flow path a of motoring condition switching valve, sampling probe is in
Align mode, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, the successively external flow path Jing Guo motoring condition switching valve
B, the external flow path c of motoring condition switching valve, sampling output interface, finally import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electricity of motoring condition switching valve
When moving the external flow path a connection of state switching valve, and being truncated with the external flow path c of motoring condition switching valve, sampling probe is in
Blowback state, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, the successively external flow path Jing Guo motoring condition switching valve
B, after the external flow path a of motoring condition switching valve, filter core is flowed into, flue is finally discharged by feeler lever.
In fact, motoring condition switching valve of the present invention is electric three passes ball valve, including four valve seats and it is placed in four
The spool of valve base cavity；The outer diameter of spool is matched with the internal diameter of four valve base cavities just；
There is T-type flow path on spool；And wherein three valve seats of four valve seats, it is provided with one and is penetrated through with four valve base cavities
External flow path.
Under the actuation of valve control module, the external flow path of the two of them of four valve seats can be connected spool by T-type flow path
It is logical, and a remaining external flow path is then truncated with two above-mentioned external flow paths.
Four valve seat is mounted in valve body, and valve body is provided with a connection flow path, connects one end and four valves of flow path
Wherein an external flow path docking, the other end of seat are then connected to the gas outlet of filter core；Stream of the gas in connection flow path
To vertical from the direction that filter core flows out with gas.
Filter core heater is installed, the outside of motoring condition switching valve is then equipped with valve heating on the outside of filter housing
Device.The two heaters can heat sampling flue gas, generate condensation after being extracted flue to avoid hot humid flue gas
Phenomenon.
The gaseous pollutant sampling probe with motoring condition switching valve according to the above records, it is known that, it is of the present invention
There are three use states, respectively sample states, align mode, blowback state for probe tool；
When probe is in sample states, as shown in figure 3, feeler lever passes through motoring condition switching valve and sampling output interface
Connection, at this point, the external flow path a of motoring condition switching valve is connected to the external flow path c of motoring condition switching valve, and with electronic shape
The external flow path b of state switching valve is truncated, and sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, is led by heat tracing pipe
Enter analysis instrument；Whole process heating, it is ensured that sampling flue gas does not condense；Filter core can get rid of the particle in sampling flue gas simultaneously
Object, in order to avoid the work of impact analysis instrument.
When probe is in align mode, as shown in figure 4, sampling output interface passes through motoring condition switching valve and mark
Gas/compressed gas interface connection；At this point, the external flow path b of motoring condition switching valve and the external flow path c of motoring condition switching valve connect
It is logical, and be truncated with the external flow path a of motoring condition switching valve, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively
External flow path c, the sampling gas interface of external flow path b, motoring condition switching valve by motoring condition switching valve, finally by heat tracing
Pipe imports analysis instrument；
When probe is in blowback state, as shown in figure 5, feeler lever passes through motoring condition switching valve and standard gas/compressed gas
Orifice；At this point, the external flow path b of motoring condition switching valve is connected to the external flow path a of motoring condition switching valve, and with electricity
The external flow path c truncation of dynamic state switching valve, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively passes through electronic shape
After the external flow path b of state switching valve, the external flow path a of motoring condition switching valve, filter core is flowed into, flue is finally discharged by feeler lever.
Guarantee the unimpeded of filter core and feeler lever.
Claims (6)
1. a kind of gaseous pollutant sampling probe with motoring condition switching valve, which is characterized in that including feeler lever, filter core, mistake
Filter shell, motoring condition switching valve, valve control module；The valve for making moved end Yu motoring condition switching valve of valve control module
Core connection；Filter core is mounted on the inside of filter housing；Wherein:
One end of filter housing is fixed with feeler lever, and the other end is then fixed with motoring condition switching valve；And outside feeler lever, filter
Shell, motoring condition switching valve are capable of forming the gas circuit of a connection；
Motoring condition switching valve is triple valve, can be connected to respectively with standard gas/compressed gas interface, sampling output interface, filter core；
Under valve control module control, sampling probe tool is there are three working condition, respectively sample states, align mode, anti-
Blow state；
When probe is in align mode, sampling output interface is only connected with standard gas/compressed gas interface by motoring condition switching valve
It is logical；
When probe is in align mode, sampling output interface is only connected with standard gas/compressed gas interface by motoring condition switching valve
It is logical；
When probe is in blowback state, standard gas/compressed gas interface is only connected to filter core by motoring condition switching valve.
2. the gaseous pollutant sampling probe according to claim 1 with motoring condition switching valve, which is characterized in that electricity
There are three external flow path, respectively external flow path a, external flow path b, external flow path c for dynamic state switching valve tool；
The external flow path a of motoring condition switching valve is docked with the gas outlet of filter housing, the external stream of motoring condition switching valve
Road b is connect with standard gas/compressed gas interface；The external flow path c of motoring condition switching valve is connect with sampling output interface；
When motoring condition switching valve is under the control of valve control module, the external flow path a and electronic shape of motoring condition switching valve
The external flow path c of state switching valve is connected to, and when being truncated with the external flow path b of motoring condition switching valve, sampling probe is in sampling
State, sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electronic shape of motoring condition switching valve
The external flow path c of state switching valve is connected to, and when being truncated with the external flow path a of motoring condition switching valve, sampling probe is in calibration
State, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively external flow path b, the electricity Jing Guo motoring condition switching valve
External flow path c, the sampling output interface of dynamic state switching valve, finally import analysis instrument by heat tracing pipe；
When motoring condition switching valve is under the control of valve control module, the external flow path b and electronic shape of motoring condition switching valve
The external flow path a of state switching valve is connected to, and when being truncated with the external flow path c of motoring condition switching valve, sampling probe is in blowback
State, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively external flow path b, the electricity Jing Guo motoring condition switching valve
After the external flow path a of dynamic state switching valve, filter core is flowed into, flue is finally discharged by feeler lever.
3. the gaseous pollutant sampling probe according to claim 2 with motoring condition switching valve, which is characterized in that mistake
Filter core heater is installed, the outside of motoring condition switching valve is then equipped with valve heater on the outside of filter shell.
4. the gaseous pollutant sampling probe according to claim 2 with motoring condition switching valve, which is characterized in that institute
Stating motoring condition switching valve is electric three passes ball valve, including four valve seats and is placed in the spools of four valve base cavities；The outer diameter of spool
Just it is matched with the internal diameter of four valve base cavities；
There is T-type flow path on spool；And wherein three valve seats of four valve seats, be provided with one it is outer with the perforation of four valve base cavities
Connect flow path.
Spool under the actuation of valve control module, the external flow path of the two of them of four valve seats can by T-type fluid communication, and
A remaining external flow path is then truncated with two above-mentioned external flow paths.
5. the gaseous pollutant sampling probe according to claim 4 with motoring condition switching valve, which is characterized in that institute
State four valve seats to be mounted in valve body, and valve body is provided with a connection flow path, connect flow path one end and four valve seats wherein one
The external flow path docking of item, the other end are then connected to the gas outlet of filter core；The gas connection flow path in flow direction and gas from
The direction of filter core outflow is vertical.
6. a kind of application method of the gaseous pollutant sampling probe with motoring condition switching valve, which is characterized in that the spy
There are three use states, respectively sample states, align mode, blowback state for head tool；
When probe is in sample states, feeler lever is only connected to sampling output interface by motoring condition switching valve, at this point, electronic
The external flow path a of state switching valve is connected to the external flow path c of motoring condition switching valve, and external with motoring condition switching valve
Flow path b truncation, sampling flue gas successively after feeler lever, filter core, motoring condition switching valve, import analysis instrument by heat tracing pipe；
When probe is in align mode, sampling output interface is only connected with standard gas/compressed gas interface by motoring condition switching valve
It is logical；
At this point, the external flow path b of motoring condition switching valve is connected to the external flow path c of motoring condition switching valve, and with electronic shape
The external flow path a of state switching valve is truncated, and after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively cuts by motoring condition
The external flow path b of valve, the external flow path c of motoring condition switching valve, sampling gas interface are changed, analyzer is finally imported by heat tracing pipe
Device；
When probe is in blowback state, feeler lever is only connected to standard gas/compressed gas interface by motoring condition switching valve；At this point,
The external flow path b of motoring condition switching valve is connected to the external flow path a of motoring condition switching valve, and with motoring condition switching valve
External flow path c truncation, after standard gas/compressed gas is flowed by standard gas/compressed gas interface, successively by the external of motoring condition switching valve
Flow path b, motoring condition switching valve external flow path a after, flow into filter core, flue is finally discharged by feeler lever.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595835A (en) * | 2019-10-11 | 2019-12-20 | 合盛硅业股份有限公司 | Sampling device and sampling method for fluidized bed reactor |
| CN112058067A (en) * | 2020-09-07 | 2020-12-11 | 天津维尔佰德科技有限公司 | Accurate ammonia spraying control method and system for circulating fluidized bed boiler and sampling device |
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