CN106092666A - Auxiliary device is demarcated in smoke sampling analysis - Google Patents
Auxiliary device is demarcated in smoke sampling analysis Download PDFInfo
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- CN106092666A CN106092666A CN201610596566.4A CN201610596566A CN106092666A CN 106092666 A CN106092666 A CN 106092666A CN 201610596566 A CN201610596566 A CN 201610596566A CN 106092666 A CN106092666 A CN 106092666A
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- shrouding
- station
- flue gas
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- auxiliary device
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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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- Health & Medical Sciences (AREA)
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Abstract
The present invention provides a kind of smoke sampling analysis to demarcate auxiliary device, and in order to assist a flue gas analysis device to demarcate the flue gas in the flue being in positive pressure environment, this flue gas analysis device connects the sampling tube in an insertion flue；Comprising: be arranged at a hold-down support of the mouth of pipe of sampling tube front end；The guiding shrouding being connected by a cradle head with described hold-down support；Control the control device that described cradle head rotates；Described guiding shrouding has one first station and one second station, when being in described first station, guides shrouding and completely encloses the mouth of pipe of described sampling tube；When being in the second station, guiding shrouding and form a flow-guiding structure, in flue, flue gas flows into sampling tube along this flow-guiding structure；The first station and the switching of the second station is realized by the rotational band action-oriented shrouding of cradle head.Can effectively guarantee that the Oxygen Amount in Flue Gas measuring instruments under positive pressure environment is normally demarcated, fundamentally solve flue gas analyzer on-line proving difficult problem under positive pressure environment.
Description
Technical field
The present invention relates to environmental technology field, particularly relate to gas cleaning processing technology field, be specifically related to a kind of flue gas
Sample analysis demarcates auxiliary device.
Background technology
Current national green audit dynamics is persistently strengthened, to thermal power plant, iron-smelter, the pollutant emission limit of the industries such as chemical industry
Value requirement improves constantly, and relevant have polluter enterprise to have to ensure that the steady in a long-term accurate of pollutant measurement.Whole nation desulfurization sets
Shi Jun has carried out bypassing the transformations such as closure, the ultralow transformation of desulfurization, wet scrubber, thus causes flue gas pressures to become big, often
Cause the flue gas analysis instrument on-line proving difficulties such as direct insertion oxygen analyzer.The reason causing above-mentioned difficulties situation is, existing
Having flue gas pollutant measurement apparatus is all to be placed in by measuring cell in severe flue gas environment, the sampling tube of general measure device
It is to extend vertically into from the thieff hatch being opened in flue side to carry out in flue sampling, on the one hand, during sampling, flue gas becomes malleation,
Pressure is relatively big, and flue gas flow rate is very fast so that need the standard fume of sampling to be not easily accessible sampling tube；On the other hand, process is measured
In, sampling tube is internal with flue to be connected, and is easily caused sampling inner tube smoke and is continually changing, thus it is tired to cause measuring instrument to demarcate
Difficulty, causes its measured deviation bigger.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of smoke sampling analysis and demarcate auxiliary device, it is possible to have
Effect guarantees that the flue gas analysis measurement apparatus under positive pressure environment is normally demarcated, and fundamentally solves flue gas analyzer under positive pressure environment
Device on-line proving difficult problem.
In order to achieve the above object, the concrete technical scheme that the present invention takes is:
A kind of smoke sampling analysis demarcates auxiliary device, in order to assist the flue gas analysis device cigarette to being in positive pressure environment
Flue gas in road is demarcated, and this flue gas analysis device connects the sampling tube in an insertion flue；Comprising:
It is arranged at a hold-down support of the mouth of pipe of sampling tube front end；
The guiding shrouding being connected by a cradle head with described hold-down support；
Control the control device that described cradle head rotates；
Described guiding shrouding has one first station and one second station, when being in described first station, guides shrouding complete
The mouth of pipe of totally-enclosed described sampling tube；When being in the second station, guiding shrouding and form a flow-guiding structure, in flue, flue gas is led along this
Flow structure flows into sampling tube；
The first station and the switching of the second station is realized by the rotational band action-oriented shrouding of cradle head.
Further, described hold-down support is arranged at the side of sampling tube flue gas flow direction dorsad.
Further, when described guiding shrouding is in the second station, guide shrouding and sampling tube axis bearing of trend be 0 to
75 ° of angles.
Further, when described guiding shrouding is in the second station, guide shrouding consistent with sampling tube axis direction.
Further, described control device includes the driving means being in transmission connection with cradle head；Dress is driven with described
The power supply device putting connection and the control switch being connected with described power supply device.
Further, the described switch that controls is connected with described flue gas analysis device signal simultaneously.
Further, described driving means is an electro-motor, and described power supply device is an energy supply coil.
Further, described guiding shrouding also has a spacing reinforcement structure, and this spacing reinforcement structure has a confined planes,
When guiding shrouding and being in the second station, the one side of this confined planes described hold-down support of laminating.
Further, the one side fixed sealing structure of described guiding shrouding, when being in the first station, described sealing structure is pasted
Close internal wall of pipe orifice or end face.
By taking technique scheme, for meter calibration condition severe in overcoming flue, the present invention is the completeest
Become and carried out flue gas malleation stopping shielding, it is ensured that calibrating gas has reached flue gas analyzer smoothly by flow-guiding structure and measured end,
Reach the working effect demarcated smoothly.Calibrating gas, after gauge pipe to measurement zone, is switched by control, switches station, envelope
Closing sampling tube, period instrument completely cuts off with gas pollutant.Both the problem having avoided being not easily accessible because of the excessive calibrating gas of pressure is the most right
The environment normally demarcated instrument subsequently is optimized, it is ensured that the normal demarcation of measurement apparatus.
Having highly versatile, simple in construction, easy for installation, practical, reliability is high, the advantage of failure rate is low.
Accompanying drawing explanation
Fig. 1 is the structural representation that in one embodiment of the invention, auxiliary device is demarcated in smoke sampling analysis, now guides envelope
Plate is in the first station.
Fig. 2 is the structural representation that in one embodiment of the invention, auxiliary device is demarcated in smoke sampling analysis, now guides envelope
Plate is in the second station.
Fig. 3 is the structural representation that in another embodiment of the present invention, auxiliary device is demarcated in smoke sampling analysis, now guides
Shrouding is in the first station.
Fig. 4 is the structural representation that in another embodiment of the present invention, auxiliary device is demarcated in smoke sampling analysis, now guides
Shrouding is in the second station.
Fig. 5 is the structural representation that in further embodiment of this invention, auxiliary device is demarcated in smoke sampling analysis, now guides
Shrouding is in the first station.
Fig. 6 is the structural representation that in further embodiment of this invention, auxiliary device is demarcated in smoke sampling analysis, now guides
Shrouding is in the second station.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description.
Embodiment 1:
As shown in Figures 1 and 2, in the present embodiment, it is provided that a kind of smoke sampling analysis demarcates auxiliary device, in order to assist cigarette
Flue gas in the flue being in positive pressure environment is demarcated by edema caused by disorder of QI analysis apparatus 101, and flue gas analysis device 101 connects insertion flue
Interior sampling tube 102；Comprising: be arranged at the hold-down support 105 of the mouth of pipe of sampling tube 102 front end；Pass through with hold-down support 105
The guiding shrouding 106 that one cradle head connects, specifically includes a guide plate 1601；And control the control dress that cradle head rotates
Put；
Guide shrouding 106 and there is one first station and one second station.During as it is shown in figure 1, be in described first station, lead
The mouth of pipe of sampling tube 102 is completely enclosed to shrouding 106；During as in figure 2 it is shown, be in the second station, guiding shrouding 106 forms one and leads
Flow structure, in flue, flue gas flows into sampling tube 102 along this flow-guiding structure；
Rotational band action-oriented shrouding 106 by cradle head realizes the switching of the first station and the second station.
Specifically, sampling tube 102 is square tube, and hold-down support 105 is arranged at the side of sampling tube 102 flue gas flow direction dorsad.
When guiding shrouding 106 is in the second station, guide shrouding 102 consistent with sampling tube 102 axis direction.Flue gas flow direction such as arrow institute
Showing, it flows to guide plate 1601, after being blocked then in inflow sampling tube 102.
Control device includes that the driving means being in transmission connection with cradle head (can arrange cavity in hold-down support, incite somebody to action
Driving means is installed in cavity)；The power supply device 103 being connected with driving means and be connected with power supply device one controls switch
104.Control switch 104 to be connected with flue gas analysis device 101 signal simultaneously.Specifically, driving means is an electro-motor, energy supply
Device 103 is an energy supply coil.
When carrying out smoke components measurement, being inserted by sampling tube in flue so that it is be in the second station, flue gas passes through guide plate
The flow-guiding structure constituted with the sampling tube front end mouth of pipe flows into guide pipe, makes flue gas flow rapidly in guide pipe, operation-control switch,
Driving cradle head band action-oriented shrouding to go to the first station, close sampling tube, flue gas is marked by flue gas analysis device simultaneously
Determine and analyze.
Flue gas analysis device 101 is in order to measure the content of various pollutant in flue gas, for currently known instrument, such as flue gas
Analytical instrument, oxygen analyzer etc., in actual applications, can choose its dimension according to different flow.Its concrete structure
It is known by those skilled in the art with function, and at present smoke components being measured, in the Practical Project analyzed extensively
Application, does not repeats them here.
Embodiment 2:
As shown in Figures 3 and 4, the present embodiment is with the difference of embodiment 1, guides shrouding 206 except including guide plate
2601, also there is spacing reinforcement structure 2602, spacing reinforcement structure 2602 has a confined planes, is in the when guiding shrouding 206
During two stations, the one side of this confined planes laminating hold-down support 105.Can simultaneously support guide plate 2601 and hold-down support 105,
Avoiding flue gas flow rate too fast, malleation is excessive, impacts excessive to guide plate 2601, causes the damage of cradle head.
It addition, in the present embodiment, guide the one side the most fixed sealing structure 2603 of shrouding 206, when being in the first station, close
Seal structure 2603 is fitted internal wall of pipe orifice or end face.This sealing structure is asbestos seal bar or rubber seal, passes through bonding way
Or the mode offering seal groove is fixed on the one side guiding the shrouding closing mouth of pipe.Make guiding shrouding that the mouth of pipe of sampling tube to have been realized
It is totally-enclosed, it is to avoid because the mouth of pipe is uneven or guides the situation that shrouding air spots leaks air.This sealing structure is not limited to this reality
Execute example, it is also possible to application is in other embodiments.
Embodiment 3:
As shown in Figures 5 and 6, the present embodiment is with the difference of embodiment 1,2, guides shrouding 306 and is in the second station
Time, guide plate 3601 and sampling tube 102 axis bearing of trend are an angle α, and in figure 6, this angle is 45 °, it practice, separately
In outer embodiment, the optional scope of this angle is 0 to 75 °, preferably 30 to 60 °.Correspondingly, spacing reinforcement structure 3602 also has one
A little changes, have a joint face being connected with guide plate 3601 and the confined planes fitted when the second station with sampling tube.
Angle between joint face and confined planes and α supplementary angle each other.
Using the structure of the present embodiment, the inflow sampling tube of flue gas is more quickly with smooth and easy, and driving means drives and leads
The resistance rotated to shrouding has reduced.
Following table is the sampling method using existing sampling method and this device measurement to SCR reactor inlet nitrogen oxides
As a result, as can be seen from the table, owing to conventional fume component analysis instrument is when sampling, it is difficult to control flue gas and flow into, and adopt
Sample pipe connects with in flue always, it is impossible to the undulatory property of the composition that removes smoke, and causes the instability of measurement result；Use application originally
The fume component analysis instrument of the auxiliary device in embodiment, flue gas can quickly introduce in sampling tube, through fume component analysis
Instrument, and, during measurement, it is possible to isolation sampling tube and flue inside smoke environment, evade smoke components ripple in sampling tube
The dynamic impact on measurement result, measurement result is more stable, more accurate.
Table 1 uses the fume component analysis instrument measurement result (measurement position: SCR reactor inlet) of routine
| The measurement time | NOx concentration mg/Nm<sup>3</sup> |
| 11:05 | 385 |
| 11:10 | 392 |
| 11:15 | 390 |
| 11:20 | 386 |
The measurement result of the fume component analysis instrument of the auxiliary device that table 2 Application Example 1 describes (measures position: SCR is anti-
Answer device entrance)
| The measurement time | NOx concentration mg/Nm<sup>3</sup> |
| 12:05 | 384 |
| 12:10 | 389 |
| 12:15 | 390 |
| 12:20 | 387 |
The measurement result of the fume component analysis instrument of the auxiliary device that table 3 Application Example 2 describes (measures position: SCR is anti-
Answer device entrance)
| The measurement time | NOx concentration mg/Nm<sup>3</sup> |
| 13:05 | 386 |
| 13:10 | 391 |
| 13:15 | 390 |
| 13:20 | 389 |
The measurement result of the fume component analysis instrument of the auxiliary device that table 4 Application Example 3 describes (measures position: SCR is anti-
Answer device entrance)
The pre-pretreating device of gas sample of the present invention, simple in construction, easy to install and use, draw Machine Design rule
The theory of letter Dai Fan in model, has reached remarkable a kind of using effect by very simple version.In smelting
The industry gas pollutant monitoring system regions such as gold, chemical industry, electric power have filled up a scientific and technological blank, survey for gas medium
Amount instrument is a kind of technical extension and raising.
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
Claims (10)
1. smoke sampling analysis demarcates an auxiliary device, in order to assist the flue gas analysis device flue to being in positive pressure environment
Interior flue gas is demarcated, and this flue gas analysis device connects the sampling tube in an insertion flue；It is characterized in that, including:
It is arranged at a hold-down support of the mouth of pipe of sampling tube；
The guiding shrouding being connected by a cradle head with described hold-down support；
Control the control device that described cradle head rotates；
Described guiding shrouding has one first station and one second station, when being in described first station, guides shrouding and seals completely
Close the mouth of pipe of described sampling tube；When being in the second station, guiding shrouding and form a flow-guiding structure, in flue, flue gas is tied along this water conservancy diversion
Structure flows into sampling tube；
The first station and the switching of the second station is realized by the rotational band action-oriented shrouding of cradle head.
2. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 1, it is characterised in that described hold-down support is arranged at
The side of sampling tube flue gas flow direction dorsad.
3. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 2, it is characterised in that described guiding shrouding is in the
During two stations, guiding shrouding with sampling tube axis bearing of trend is 0 to 75 ° of angle.
4. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 3, it is characterised in that described guiding shrouding is in the
During two stations, guide shrouding consistent with sampling tube axis direction.
5. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 1, it is characterised in that described control device include with
The driving means that cradle head is in transmission connection；The power supply device that is connected with described driving means and with described power supply device even
The control switch connect.
6. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 5, it is characterised in that described control switch simultaneously with
Described flue gas analysis device signal connects.
7. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 1, it is characterised in that described driving means is an electricity
Dynamic motor, described power supply device is an energy supply coil.
8. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 1, it is characterised in that described guiding shrouding also has
One spacing reinforcement structure, this spacing reinforcement structure has a confined planes, and when guiding shrouding and being in the second station, this confined planes pastes
Close the one side of described hold-down support.
9. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 1, it is characterised in that the one side of described guiding shrouding
Fixed sealing structure, when being in the first station, described sealing structure laminating internal wall of pipe orifice or the end face of the mouth of pipe.
10. auxiliary device is demarcated in smoke sampling analysis as claimed in claim 9, it is characterised in that described sealing structure is one
Asbestos seal bar 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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| Publication Number | Publication Date |
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| CN106092666A true CN106092666A (en) | 2016-11-09 |
| CN106092666B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113341080A (en) * | 2021-08-06 | 2021-09-03 | 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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| CN106092666B (en) | 2019-04-16 |
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