CN106092666B - Smoke sampling analysis calibration auxiliary device - Google Patents
Smoke sampling analysis calibration auxiliary device Download PDFInfo
- Publication number
- CN106092666B CN106092666B CN201610596566.4A CN201610596566A CN106092666B CN 106092666 B CN106092666 B CN 106092666B CN 201610596566 A CN201610596566 A CN 201610596566A CN 106092666 B CN106092666 B CN 106092666B
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- China
- Prior art keywords
- sealing plate
- station
- flue gas
- guiding
- sampling
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Classifications
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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
Abstract
The present invention provides a kind of smoke sampling analysis calibration auxiliary device, the sampling pipe to assist a flue gas analysis device to demarcate the flue gas in the flue in positive pressure environment, in one insertion flue of flue gas analysis device connection；Comprising: be set to a hold-down support of the nozzle of sampling pipe front end；The guiding sealing plate being connect with the hold-down support by a cradle head；Control a control device of the cradle head rotation；The guiding sealing plate has one first station and a second station, and when being in first station, guiding sealing plate completely encloses the nozzle of the sampling pipe；When in second station, guiding sealing plate forms a flow-guiding structure, and flue gas flows into sampling pipe along the flow-guiding structure in flue；The switching of the first station and second station is realized with action-oriented sealing plate by the rotation of cradle head.It can effectively ensure that the Oxygen Amount in Flue Gas measuring instrumentss under positive pressure environment are normally demarcated, fundamentally solve the flue gas analyzer on-line proving difficult problem under positive pressure environment.
Description
Technical field
The present invention relates to environmental technology field more particularly to gas cleaning processing technology fields, and in particular to a kind of flue gas
Sampling analysis demarcates auxiliary device.
Background technique
Current national environmental protection inspection is persistently reinforced, to thermal power plant, iron-smelter, the pollutant emission limit of the industries such as chemical industry
Value requires to be continuously improved, and correlation has pollution sources enterprise to have to ensure that the steady in a long-term accurate of pollutant measurement.National desulfurization is set
Shi Jun has carried out the transformations such as bypass closure, the ultralow transformation of desulfurization, wet scrubber, becomes larger so as to cause flue gas pressures, often
Cause the on-line proving of the flue gas analyses instrument such as direct insertion oxygen analyzer difficult.The reason of causing above-mentioned difficulties situation is, existing
It to flue gas pollutant measuring device is placed in measuring cell in severe flue gas environment, the sampling pipe of general measure device
To extend vertically into flue to be sampled from the thieff hatch for being provided with flue side, on the one hand, when sampling, flue gas at positive pressure,
Pressure is larger, and flue gas flow rate is very fast, so that the standard fume sampled is needed to be not easily accessible sampling pipe；On the other hand, measurement process
In, it is connected to inside sampling pipe and flue, sampling inner tube smoke is easy to cause constantly to change, to cause measuring instrument calibration tired
Difficulty causes its measured deviation larger.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of smoke samplings to analyze calibration auxiliary device, Neng Gouyou
Effect ensures that the flue gas analysis measuring device under positive pressure environment is normally demarcated, and fundamentally solves the flue gas analyzer under positive pressure environment
Device on-line proving difficult problem.
In order to achieve the above object, the specific technical solution that the present invention takes is:
A kind of smoke sampling analysis calibration auxiliary device, to assist a flue gas analysis device to the cigarette for being in positive pressure environment
Flue gas in road is demarcated, the sampling pipe in one insertion flue of flue gas analysis device connection；Comprising:
It is set to a hold-down support of the nozzle of sampling pipe front end；
The guiding sealing plate being connect with the hold-down support by a cradle head；
Control a control device of the cradle head rotation；
The guiding sealing plate has one first station and a second station, and when being in first station, guiding sealing plate is complete
The nozzle of the totally-enclosed sampling pipe；When in second station, guiding sealing plate forms a flow-guiding structure, and flue gas is led along this in flue
Flow structure flows into sampling pipe；
The switching of the first station and second station is realized with action-oriented sealing plate by the rotation of cradle head.
Further, the hold-down support is set to side of the sampling pipe backwards to flue gas flow direction.
Further, when the guiding sealing plate is in second station, guiding sealing plate and sampling pipe axis extending direction in 0 to
75 ° of angles.
Further, when the guiding sealing plate is in second station, guiding sealing plate is consistent with sampling tube axis direction.
Further, the control device includes the driving device with cradle head transmission connection；It is filled with the driving
The control switch setting a power supply device of connection and being connect with the power supply device.
Further, the control switch is connect with the flue gas analysis device signal simultaneously.
Further, the driving device is an electric motor, and the power supply device is an energy supply coil.
Further, the guiding sealing plate also has a limit reinforcement structure, which has a confined planes,
When guiding sealing plate is in second station, which is bonded the one side of the hold-down support.
Further, the fixed sealing structure of one side of the guiding sealing plate, when being in the first station, the sealing structure patch
Close internal wall of pipe orifice or end face.
By taking above-mentioned technical proposal, in order to overcome meter calibration condition severe in flue, the present invention is cleverly complete
At blocking shielding is carried out to flue gas positive pressure, guarantee that calibrating gas smoothly reaches flue gas analyzer measurement end by flow-guiding structure,
Reach the working effect smoothly demarcated.Calibrating gas, by control switch, switches station, envelope after gauge pipe to measurement zone
Sampling pipe is closed, during which instrument and gas pollutant completely cut off.Both it had avoided the problem that being not easily accessible because of the excessive calibrating gas of pressure, it is also right
The environment then normally demarcated to instrument is optimized, it is ensured that measuring device normal calibration.
With versatile, structure is simple, easy for installation, practical, high reliablity, the low advantage of failure rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in one embodiment of the invention, at this time guiding envelope
Plate is in the first station.
Fig. 2 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in one embodiment of the invention, at this time guiding envelope
Plate is in second station.
Fig. 3 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in another embodiment of the present invention, is oriented at this time
Sealing plate is in the first station.
Fig. 4 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in another embodiment of the present invention, is oriented at this time
Sealing plate is in second station.
Fig. 5 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in further embodiment of this invention, is oriented at this time
Sealing plate is in the first station.
Fig. 6 is the structural schematic diagram of smoke sampling analysis calibration auxiliary device in further embodiment of this invention, is oriented at this time
Sealing plate is in second station.
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
Whole description.
Embodiment 1:
As shown in Figures 1 and 2, in the present embodiment, a kind of smoke sampling analysis calibration auxiliary device is provided, to assist cigarette
Gas analytical equipment 101 demarcates the flue gas in the flue in positive pressure environment, the connection insertion flue of flue gas analysis device 101
Interior sampling pipe 102；Comprising: be set to the hold-down support 105 of the nozzle of 102 front end of sampling pipe；Pass through with hold-down support 105
The guiding sealing plate 106 of one cradle head connection, specifically includes a guide plate 1601；And the control dress of control cradle head rotation
It sets；
Being oriented to sealing plate 106 has one first station and a second station.As shown in Figure 1, being led when being in first station
The nozzle of sampling pipe 102 is completely enclosed to sealing plate 106；As shown in Fig. 2, guiding sealing plate 106 forms one and leads when being in second station
Flow structure, flue gas flows into sampling pipe 102 along the flow-guiding structure in flue；
The switching of the first station and second station is realized with action-oriented sealing plate 106 by the rotation of cradle head.
Specifically, sampling pipe 102 is square tube, and hold-down support 105 is set to side of the sampling pipe 102 backwards to flue gas flow direction.
When guiding sealing plate 106 is in second station, guiding sealing plate 102 is consistent with 102 axis direction of sampling pipe.Flue gas flow direction such as arrow institute
Show, flow to guide plate 1601, after being blocked then flows into sampling pipe 102.
Control device includes that with a driving device of cradle head transmission connection (cavity can be arranged in hold-down support, incite somebody to action
Driving device is installed in cavity)；The power supply device 103 being connect with driving device and the control switch being connect with power supply device
104.Control switch 104 is connect with 101 signal of flue gas analysis device simultaneously.Specifically, driving device is an electric motor, energy supply
Device 103 is an energy supply coil.
When carrying out smoke components measurement, sampling pipe is inserted into flue, is at second station, flue gas passes through guide plate
Guide pipe is flowed into the flow-guiding structure that sampling pipe front end nozzle is constituted, flows rapidly into flue gas in guide pipe, operation-control switch,
Driving cradle head band action-oriented sealing plate goes to the first station, closes sampling pipe, while flue gas analysis device marks flue gas
Fixed and analysis.
Content of the flue gas analysis device 101 to measure various pollutants in flue gas is currently known instrument, such as flue gas
Analytical instrument, oxygen analyzer etc. can choose its dimension in practical applications according to different flow.Its specific structure
It is known by those skilled in the art with function, and extensive in the Practical Project for measuring, analyze to smoke components at present
Using details are not described herein.
Embodiment 2:
As shown in Figures 3 and 4, the present embodiment the difference from embodiment 1 is that, guiding sealing plate 206 in addition to include guide plate
2601, also there is limit reinforcement structure 2602, limit reinforcement structure 2602 has a confined planes, when guiding sealing plate 206 is in the
When two stations, which is bonded the one side of hold-down support 105.Can simultaneously support guide plate 2601 and hold-down support 105,
Avoid flue gas flow rate too fast, positive pressure is excessive, impacts to guide plate 2601 excessive, causes the damage of cradle head.
In addition, it is oriented to the also fixed sealing structure 2603 of one side of sealing plate 206 in the present embodiment, it is close when being in the first station
Seal structure 2603 is bonded internal wall of pipe orifice or end face.The sealing structure is asbestos seal item or rubber seal, passes through bonding way
Or open up seal groove mode be fixed on guiding sealing plate closing nozzle one side.Realize guiding sealing plate to the nozzle of sampling pipe
It is totally-enclosed, it avoids because of the case where nozzle is uneven or guiding sealing plate uneven surface leaks air.The sealing structure is not limited to this reality
Example is applied, it can also be using in other embodiments.
Embodiment 3:
As shown in Figures 5 and 6, the present embodiment and the difference of embodiment 1,2 are, guiding sealing plate 306 is in second station
When, guide plate 3601 and 102 axis extending direction of sampling pipe are in an angle α, and in Fig. 6, which is 45 °, in fact, another
In outer embodiment, the optional range of the angle is 0 to 75 °, preferably 30 to 60 °.Correspondingly, limit reinforcement structure 3602 also has one
A little variations, have a joint face connecting with guide plate 3601 and the confined planes being bonded in second station with sampling pipe.
The supplementary angle each other angle between joint face and confined planes and α.
Using the structure of the present embodiment, the inflow sampling pipe of flue gas is more quickly and smooth, and driving device driving is led
The resistance rotated to sealing plate is also reduced.
Following table is the measurement using existing sampling method and the sampling method of the present apparatus to SCR reactor inlet nitrogen oxides
As a result, as can be seen from the table, since conventional fume component analysis instrument is in sampling, it is difficult to control flue gas inflow, and adopt
Sample pipe always be connected in flue, the fluctuation for the ingredient that can not remove smoke causes the unstable of measurement result；Originally using application
The fume component analysis instrument of auxiliary device in embodiment, flue gas can quickly introduce in sampling pipe, and go directly fume component analysis
Instrument, also, in measurement process, sampling pipe and flue inside smoke environment can be completely cut off, evaded smoke components wave in sampling pipe
The dynamic influence to measurement result, measurement result are more stable, more acurrate.
Table 1 is using conventional fume component analysis instrument measurement result (measurement position: SCR reactor inlet)
| Time of measuring | NOx concentration mg/Nm3 |
| 11:05 | 385 |
| 11:10 | 392 |
| 11:15 | 390 |
| 11:20 | 386 |
(measurement position: SCR is anti-for the measurement result of the fume component analysis instrument of the auxiliary device of 2 Application Example 1 of table description
Answer device entrance)
| Time of measuring | NOx concentration mg/Nm3 |
| 12:05 | 384 |
| 12:10 | 389 |
| 12:15 | 390 |
| 12:20 | 387 |
(measurement position: SCR is anti-for the measurement result of the fume component analysis instrument of the auxiliary device of 3 Application Example 2 of table description
Answer device entrance)
| Time of measuring | NOx concentration mg/Nm3 |
| 13:05 | 386 |
| 13:10 | 391 |
| 13:15 | 390 |
| 13:20 | 389 |
(measurement position: SCR is anti-for the measurement result of the fume component analysis instrument of the auxiliary device of 4 Application Example 3 of table description
Answer device entrance)
The pre- pretreating device of gas sample of the invention, structure is simple, easy to install and use, has drawn Machine Design rule
The theory of letter Dai Fan in model, has reached a kind of very remarkable using effect by very simple structure type.In smelting
The industries gas pollutant such as gold, chemical industry, electric power monitoring system regions have filled up a scientific and technological blank, and gas medium is surveyed
Amount instrument is a kind of technical extension and raising.
Obviously, the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of smoke sampling analysis calibration auxiliary device, to assist a flue gas analysis device to the flue for being in positive pressure environment
Interior flue gas is demarcated, the sampling pipe in one insertion flue of flue gas analysis device connection；It is characterised by comprising:
It is set to a hold-down support of the nozzle of sampling pipe；
The guiding sealing plate being connect with the hold-down support by a cradle head；
Control a control device of the cradle head rotation；
The guiding sealing plate has one first station and a second station, and when being in first station, guiding sealing plate seals completely
The nozzle of the sampling pipe is closed, flue gas analysis device carries out analysis calibration to flue gas at this time；When in second station, it is oriented to sealing plate
A flow-guiding structure is formed, flue gas flows into sampling pipe along the flow-guiding structure in flue；
The switching of the first station and second station is realized with action-oriented sealing plate by the rotation of cradle head；
The control device includes and a driving device of cradle head transmission connection, the energy supply that connect with the driving device
Device and the control switch connecting with the power supply device, the control switch connect with the flue gas analysis device signal simultaneously
It connects.
2. smoke sampling analysis calibration auxiliary device as described in claim 1, which is characterized in that the hold-down support is set to
Sampling pipe is backwards to the side of flue gas flow direction.
3. smoke sampling as claimed in claim 2 analysis calibration auxiliary device, which is characterized in that the guiding sealing plate is in the
When two stations, guiding sealing plate and sampling pipe axis extending direction are in 0 to 75 ° of angle.
4. smoke sampling as claimed in claim 3 analysis calibration auxiliary device, which is characterized in that the guiding sealing plate is in the
When two stations, guiding sealing plate is consistent with sampling tube axis direction.
5. smoke sampling analysis calibration auxiliary device as described in claim 1, which is characterized in that the driving device is an electricity
Dynamic motor, the power supply device are an energy supply coil.
6. smoke sampling analysis calibration auxiliary device as described in claim 1, which is characterized in that the guiding sealing plate also has
One limit reinforcement structure, the limit reinforcement structure have a confined planes, when guiding sealing plate is in second station, the limit face paste
Close the one side of the hold-down support.
7. smoke sampling analysis calibration auxiliary device as described in claim 1, which is characterized in that the one side of the guiding sealing plate
Fixed sealing structure, when being in the first station, the end face of the sealing structure fitting internal wall of pipe orifice or nozzle.
8. smoke sampling analysis calibration auxiliary device as claimed in claim 7, which is characterized in that the sealing structure is a stone
Minuteness strip of paper used for sealing or rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596566.4A CN106092666B (en) | 2016-07-26 | 2016-07-26 | Smoke sampling analysis calibration auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596566.4A CN106092666B (en) | 2016-07-26 | 2016-07-26 | Smoke sampling analysis calibration auxiliary device |
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| CN106092666A CN106092666A (en) | 2016-11-09 |
| CN106092666B true CN106092666B (en) | 2019-04-16 |
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| CN201610596566.4A Active CN106092666B (en) | 2016-07-26 | 2016-07-26 | Smoke sampling analysis calibration auxiliary device |
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| CN109752221A (en) * | 2018-12-30 | 2019-05-14 | 光力科技股份有限公司 | Probe tube and flue gas inspection device, the flue component for using the probe tube |
| CN113341080B (en) * | 2021-08-06 | 2021-10-26 | 国网浙江省电力有限公司营销服务中心 | Carbon emission monitoring and alarming system for power production |
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