CN205506489U - Novel constant speed flue gas sampling detecting system - Google Patents
Novel constant speed flue gas sampling detecting system Download PDFInfo
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- CN205506489U CN205506489U CN201620248512.4U CN201620248512U CN205506489U CN 205506489 U CN205506489 U CN 205506489U CN 201620248512 U CN201620248512 U CN 201620248512U CN 205506489 U CN205506489 U CN 205506489U
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Abstract
The utility model relates to a gaseous technical field who detects discloses a novel constant speed flue gas sampling detecting system. Problem in order to solve unable constant speed sampling has provided following technical scheme. Characterized by: include: sample gas pipe (2) are mixed the mechanism of qi and are constructed (13), mix trachea way (14), contain the detecting element (CLDY) of probe, ejector (SLQ), and efflux governing valve (STJF), efflux fan (SF), first, the second velocity of flow detection mechanism who detects to the carrier gas electrical control valve (XDT) that carrier gas flow dimension adjusted in real time, is made to carrier gas fan (XF) to various gas flow rates, the aperture size of the carrier gas electrical control valve (XDT) through real -time regulation changes the size of carrier gas flow, and then makes the sample gas velocity of flow and flue gas velocity tend to equal. The beneficial effects are that: realized the constant speed sampling, detected the precision and increase substantially.
Description
Technical field
The technical field that this utility model relates to gas sample, detects and analyze, particularly relates to a kind of novel
Constant speed flue gas sampling detecting system, this utility model is particularly suited for the sample detecting to flue gas particles.
Background technology
In thermal power plant, discarded flue gas passes through discharge tube to airborne release；Discharge tube is also referred to as
For flue.Purpose for environmental protection, it usually needs carry out dropping harm reason, such as to flue gas to the flue gas of discharge
Carry out depositing dust process, could discharge after making dust content up to standard；Thus, the flue gas in discharge tube is entered
Row detection has just become requisite work.
In order to detect the flue gas of discharge tube, people are provided with sample gas pipe in discharge tube, with negative
The mode of pressure, continuously extraction obtains flue gas sample gas.In the prior art, predicted velocity is used
Determine the size in sample gas pipe sampling mouthpiece footpath, thus sample.But, due to the flow velocity moment in flue
In change, the mode of sampling predicted velocity can not accomplish real-time tracking, and the sample gas of extraction cannot ensure that it represents
Property.Flue gas flow rate in discharge tube and the situation of sample endotracheal sample gas flow velocity, be shown in Fig. 1, Fig. 2 and Tu
Shown in 3, the big arrow in each figure represents the flow direction of flue gas.
In above-mentioned three figures, V is sample endotracheal sample gas flow velocity, and W is the flue gas flow rate in discharge tube.Only
When sample gas flow velocity V is equal to flue gas flow rate W, the most only during isokinetic sampling, sample gas particle concentration just has generation
Table, as shown in Figure 1.When sample gas flow velocity V is more than flue gas flow rate W, sample gas concentration can be less than actual concentrations,
Situation sees Fig. 2.When sample gas flow velocity V is less than flue gas flow rate W, sample gas concentration can be more than actual flue gas concentration,
Situation sees Fig. 3.
Non-isokinetic sampling is very big on certainty of measurement impact, and engineering technological is needed badly and be can solve the problem that this problem.
Utility model content
Problem for solution isokinetic sampling by no means, it is achieved the purpose of isokinetic sampling, the utility model proposes with
Lower technical scheme.
1. a novel constant speed flue gas sampling detecting system, including: automation control circuit, sample gas pipe,
Air mixing machine structure, gas mixing pipe road, containing probe detector unit, ejector, jet regulation valve, jet blower,
Carrier gas blower fan, the carrier gas electric control valve that carrier gas uninterrupted is regulated in real time, flue gas is arranged
Put the first flow velocity testing agency that flue gas flow rate in pipeline is made to detect, that specific gas flow velocity is detected
Two flow velocity testing agencies；Described specific gas flow velocity refers to three: sample gas flow velocity, carrier gas flow velocity, with
And gaseous mixture flow velocity, the described detection that carries out is by directly detecting, or the described detection that carries out is by
Directly detection adds indirect detection；Described ejector contain actively air inlet port, passive air inlet port and
Air outlet；
One end of sample gas pipe is goed deep into flue gas exhausting pipe line, the other end of sample gas pipe and air mixing machine structure gas circuit
Connection；Air mixing machine structure connects with one end gas circuit in gas mixing pipe road, the other end in gas mixing pipe road and the quilt of ejector
Dynamic air inlet port gas circuit connection；
Described carrier gas blower fan, its air inlet and atmosphere；The gas outlet of carrier gas blower fan and carrier gas
The input interface gas circuit connection of electric control valve；The output interface of carrier gas electric control valve and air mixing machine structure gas
Road connects；The terminals of carrier gas electric control valve electrically connect with automation control circuit；
Described jet blower, its air inlet and atmosphere, its gas outlet regulates the input of valve with jet
Implication road connects；The output port of jet regulation valve connects with the active air inlet port gas circuit of ejector；
The probe of detector unit is arranged on the body portion in gas mixing pipe road；
First flow velocity testing agency, it is arranged in flue gas exhausting pipe line, its terminals and Automated condtrol electricity
Road electrically connects；
The terminals of second flow speed testing agency electrically connect with automation control circuit.
2. the second flow speed testing agency described in, it is provided that
Sample gas flow rate detection parts are set at sample gas pipe, mixed gas velocity test section is set at gas mixing pipe road
At part, and the gas channels between carrier gas electric control valve output interface and air mixing machine structure, dilution is set
Gas velocity detection part.
3. the second flow speed testing agency described in, it is set to any one in following three:
A., sample gas flow rate detection parts are set at sample gas pipe, and the inspection of mixed gas velocity is set at gas mixing pipe road
Survey parts；
B., sample gas flow rate detection parts are set at sample gas pipe, and at carrier gas electric control valve output interface
And carrier gas flow velocity detection part is set at the gas channels between air mixing machine structure；
C., mixed gas velocity detection part is set at gas mixing pipe road, and connects in the output of carrier gas electric control valve
At gas channels between mouth and air mixing machine structure, carrier gas flow velocity detection part is set.
4. the system described in includes: sample gas Heat preservation parts, and it is arranged at sample gas pipe, its terminals
Electrically connect with automation control circuit；Described automation control circuit includes power circuit.
5. the system described in includes: carrier gas heater block；
The gas outlet of carrier gas blower fan adds thermally coupled with the input interface of carrier gas electric control valve by dilution
Pipe connects；Described carrier gas heater block, its be arranged on dilution heating connecting tube at, its terminals with from
Dynamicization control circuit electrically connects；Described automation control circuit includes power circuit.
6. the system described in includes: jet gas heater block；
The gas outlet of jet blower adds heat pipe with the input port of jet regulation valve by jet and connects；Described
Jet gas heater block, it is arranged on jet and adds at heat pipe, and its terminals electrically connect with automation control circuit；
Described automation control circuit includes power circuit.
7. the system described in includes: blowback cleaning mechanism；
Described blowback cleaning mechanism includes: electric T-shaped valve and blowback electromagnetic valve；Electric T-shaped valve contains
One interface, the second interface and the 3rd interface；Blowback electromagnetic valve contains input interface and output interface；
Described gas mixing pipe road includes anterior pipeline and rear portion pipeline；Air mixing machine structure, the front tube in gas mixing pipe road
Road, the first interface of electric T-shaped valve, this three's order gas circuit connection；Second interface of electric T-shaped valve,
The rear portion pipeline in gas mixing pipe road, the passive air inlet port of ejector, this three's order gas circuit connection；Electronic three
3rd interface of logical valve is connected by the outfan gas circuit of trachea with jet regulation valve；
Described blowback electromagnetic valve, its input interface connects with the input interface gas circuit of carrier gas electric control valve
Logical, its output interface connects with the rear portion pipeline gas circuit in gas mixing pipe road；
The terminals of electric T-shaped valve electrically connect with automation control circuit；The terminals of blowback electromagnetic valve with from
Dynamicization control circuit electrically connects；
The probe of detector unit is arranged at the rear portion pipeline in gas mixing pipe road.
8. the system described in includes: carrier gas heater block and blowback cleaning mechanism；
The gas outlet of carrier gas blower fan adds thermally coupled with the input interface of carrier gas electric control valve by dilution
Pipe connects；Described carrier gas heater block, it is arranged at dilution heating connecting tube；
Described blowback cleaning mechanism includes: electric T-shaped valve and blowback electromagnetic valve；Electric T-shaped valve contains
One interface, the second interface and the 3rd interface；Blowback electromagnetic valve contains input interface and output interface；
Described gas mixing pipe road includes anterior pipeline and rear portion pipeline；Air mixing machine structure, the front tube in gas mixing pipe road
Road, the first interface of electric T-shaped valve, this three's order gas circuit connection；Second interface of electric T-shaped valve,
The rear portion pipeline in gas mixing pipe road, the passive air inlet port of ejector, this three's order gas circuit connection；Electronic three
3rd interface of logical valve is connected by the outfan gas circuit of trachea with jet regulation valve；
Described blowback electromagnetic valve, its input interface connects with dilution heating connecting tube gas circuit, its output interface
Connect with the rear portion pipeline gas circuit in gas mixing pipe road；
The terminals of carrier gas heater block electrically connect with automation control circuit；The terminals of electric T-shaped valve
Electrically connect with automation control circuit；The terminals of blowback electromagnetic valve electrically connect with automation control circuit；Institute
The automation control circuit stated includes power circuit；
The probe of detector unit is arranged at the rear portion pipeline in gas mixing pipe road.
9. the system described in includes: sample gas Heat preservation parts, carrier gas heater block, and jet gas heats
Parts, and blowback cleaning mechanism；
Described sample gas Heat preservation parts, it is arranged at sample gas pipe；
The gas outlet of carrier gas blower fan adds thermally coupled with the input interface of carrier gas electric control valve by dilution
Pipe connects；Described carrier gas heater block, it is arranged at dilution heating connecting tube；
The gas outlet of jet blower is connected by jet heating connecting tube with the input port of jet regulation valve；Institute
The jet gas heater block stated, it is arranged at jet heating connecting tube；
Described blowback cleaning mechanism includes: electric T-shaped valve and blowback electromagnetic valve；Electric T-shaped valve contains
One interface, the second interface and the 3rd interface；Blowback electromagnetic valve contains input interface and output interface；
Described gas mixing pipe road includes anterior pipeline and rear portion pipeline；Air mixing machine structure, the front tube in gas mixing pipe road
Road, the first interface of electric T-shaped valve, this three's order gas circuit connection；Second interface of electric T-shaped valve,
The rear portion pipeline in gas mixing pipe road, the passive air inlet port of ejector, this three's order gas circuit connection；Electronic three
3rd interface of logical valve is connected with jet heating connecting tube gas circuit by trachea；
Described blowback electromagnetic valve, its input interface connects with dilution heating connecting tube gas circuit, its output interface
Connect with the rear portion pipeline gas circuit in gas mixing pipe road；
The probe of detector unit is arranged at the rear portion pipeline in gas mixing pipe road；
The terminals of sample gas Heat preservation parts electrically connect with automation control circuit；Carrier gas heater block
Terminals electrically connect with automation control circuit；The terminals of jet gas heater block and automation control circuit
Electrical connection；The terminals of electric T-shaped valve electrically connect with automation control circuit；The terminals of blowback electromagnetic valve
Electrically connect with automation control circuit；Described automation control circuit includes power circuit.
The beneficial effects of the utility model are:
Achieve isokinetic sampling, flue gas can be detected in real time, and accuracy of detection increases substantially.
Accompanying drawing explanation
Fig. 1 is the sample gas flow velocity V schematic diagram equal to flue gas flow rate W；
Fig. 2 is the sample gas flow velocity V schematic diagram more than flue gas flow rate W；
Fig. 3 is the sample gas flow velocity V schematic diagram less than flue gas flow rate W；
Fig. 4 is one of schematic diagram of this utility model detecting system；
Fig. 5 is the two of the schematic diagram of this utility model detecting system；
Fig. 6 is the three of the schematic diagram of this utility model detecting system；
Fig. 7 is the four of the schematic diagram of this utility model detecting system；
Fig. 8 is the five of the schematic diagram of this utility model detecting system；
Fig. 9 is the six of the schematic diagram of this utility model detecting system；
Figure 10 is the seven of the schematic diagram of this utility model detecting system；
Figure 11 is provided with the utility model system schematic of blowback cleaning mechanism, and the system in this figure is in often
The detection state of rule；
Figure 12 is the equivalent schematic drawing of Figure 11 gas circuit walking situation；
Figure 13 is the schematic diagram that the utility model system of Figure 11 is in blowback clean conditions；
Figure 14 is the equivalent schematic drawing of Figure 13 gas circuit walking situation.
Label declaration in figure
Sample gas pipe 2；Flue gas exhausting pipe line 5；Air mixing machine structure 13；Gas mixing pipe road 14；First flow velocity testing machine
Structure 15；Carrier gas flow velocity detection part 16；Sample gas flow rate detection parts 18；Mixed gas velocity detection part 19；
Sample gas Heat preservation parts 31；Carrier gas heater block 32；Jet gas heater block 33.
Detector unit CLDY；Blowback electromagnetic valve FCF；Ejector SLQ；Jet regulation valve STJF；Jet wind
Machine SF；Carrier gas blower fan XF；Electric T-shaped valve STF；First interface S1；Second interface S2；3rd connects
Mouth S3；Carrier gas electric control valve XDT；Sample endotracheal sample gas flow velocity V；Flue gas stream in discharge tube
Speed W.
In Fig. 1, Fig. 2, Fig. 3, the big arrow of discharge tube bottom represents the flow direction of flue gas.
In Fig. 4 to Figure 16, the big arrow of flue gas exhausting pipe line 5 bottom represents the flow direction of flue gas, its
More than small arrow everywhere represent the direction of travel of position air-flow.
The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Detailed description of the invention
Prior art uses predicted velocity to determine the size in sample gas pipe sampling mouthpiece footpath, samples；Therefore,
For being engraved in change in flue during flow velocity, the mode of prior art can not accomplish real-time tracking, owing to being drawn into
Sample gas flow velocity and flue gas flow rate unequal, so sample gas cannot ensure that it is representative, cause last measurement
Trueness error is the biggest.
The technical scheme that the utility model proposes, it is proposed that following isokinetic sampling's innovative approach so that sample
Endotracheal sample gas flow velocity keeps equal constantly with the flue gas flow rate in discharge tube.
First, this utility model is made the general description, and interpretation.
This utility model overall plan is described as follows:
One of the present utility model novel constant speed flue gas sampling detecting system, including: automation control circuit,
Sample gas pipe 2, air mixing machine structure 13, gas mixing pipe road 14, containing probe detector unit CLDY, ejector SLQ,
Jet regulation valve STJF, jet blower SF, carrier gas blower fan XF, carried out carrier gas uninterrupted in real time
The carrier gas electric control valve XDT of regulation, that detects flue gas flow rate work in flue gas exhausting pipe line 5 is first-class
Speed testing agency 15, the second flow speed testing agency that specific gas flow velocity is detected；Described is specific
Gas flow rate refers to three: sample gas flow velocity, carrier gas flow velocity and gaseous mixture flow velocity, described carrying out is examined
Survey is by directly detecting, or the described detection that carries out is by directly detecting adding indirect detection；Described
Ejector SLQ contains actively air inlet port, passive air inlet port and air outlet；
One end of sample gas pipe 2 is deeply internal to flue gas exhausting pipe line 5, the other end of sample gas pipe 2 and air mixing machine
Structure 13 gas circuit connects；Air mixing machine structure 13 connects with one end gas circuit in gas mixing pipe road 14, gas mixing pipe road 14
The other end connect with the passive air inlet port gas circuit of ejector SLQ；
Described carrier gas blower fan XF, its air inlet and atmosphere；The gas outlet of carrier gas blower fan XF with
The input interface gas circuit connection of carrier gas electric control valve XDT；The output of carrier gas electric control valve XDT connects
Mouth connects with air mixing machine structure 13 gas circuit；The terminals of carrier gas electric control valve XDT and Automated condtrol electricity
Road electrically connects；
Described jet blower SF, its air inlet and atmosphere, its gas outlet regulates valve STJF with jet
Input port gas circuit connection；The output port of jet regulation valve STJF and the active air inlet of ejector SLQ
Port gas circuit connects；
The probe of detector unit CLDY is arranged on the body portion in gas mixing pipe road 14；
First flow velocity testing agency 15, it is arranged in flue gas exhausting pipe line 5, its terminals and automatization
Control circuit electrically connects；
The terminals of second flow speed testing agency electrically connect with automation control circuit.
This utility model overall plan describes as above；The most again this utility model overall plan is explained reconciliation
Release.
1. see Fig. 4 to understand.
2. the flue gas in discharge tube is under the effect of negative pressure, and sample gas is extracted via sample gas pipe and obtains.Row
Putting the flue gas that is referred to as in pipeline, entrance sample is endotracheal is referred to as sample gas.
3. carrier gas blower fan XF and jet blower SF, is air compressor.
4., containing detector unit CLDY of probe, it is the instrument that gas is detected.
Detector unit CLDY includes detector unit main body and probe.The probe of broad sense is exactly sensor, its bag
Include: the circuit such as part, and amplification, shaping of popping one's head in；The probe of narrow sense only refers to part of popping one's head in.
For the probe of broad sense, it is a sensor, and its output signal can be detected unit main body
Directly use.
For the probe of narrow sense, owing to the signal of telecommunication of probe part acquisition is the most small and weak and is not sufficiently stable, institute
To be also equipped with the subsequent conditioning circuits such as amplification, shaping；So, in the case of probe is by narrow definition, detection
Unit main body further comprises the subsequent conditioning circuits such as amplification, shaping.
Being no matter probe or the probe of narrow sense of broad sense, probe part is all in gas mixing pipe road, or
Say be in dilution after sample gas gas (mixed gas) by way of part, it is hereby achieved that initially, original
The signal of telecommunication.
5. the gas that detector unit CLDY detects is mixed gas.
Mixed gas is mixed by two kinds of gases, and the first is the original sample gas come in from sample gas pipe, and second
Planting is the diluent gas come from carrier gas electric control valve XDT output interface；Aforementioned two kinds of gases are at mixed gas
In mechanism 13 after mixing, then flow along gas mixing pipe road 14, after discharge through ejector SLQ.Detector unit
The probe of CLDY is arranged on the body portion in gas mixing pipe road 14, and probe contacts is to being mixed gas, so detection is single
The gas that unit CLDY detects is mixed gas.
Simple air mixing machine structure 13 is exactly a container closed, and it has two air inlets and a gas outlet；
One air inlet enters sample gas, and another air inlet enters carrier gas, and two kinds of gases mix in container,
And enter gas mixing pipe road 14 through gas outlet.
6. ejector SLQ is the parts without moving parts, and it can be long-time, highly reliable, high temperature resistant
Ground work.Ejector SLQ contains three ports, respectively: actively air inlet port, passive air inlet port,
And air outlet.Ejector SLQ, its active air inlet port enters compressed air and from air outlet height
Speed ejection, thus negative pressure is produced at the position of passive air inlet port so that the gas outside passive air inlet port
Being inhaled into continuously, the gas being inhaled into is again from air outlet in the lump ejection at a high speed.
In normal work, owing to the position of passive air inlet port creates negative pressure so that gas occurs so
Directed flow: sample gas pipe 2 → air mixing machine structure 13 → gas mixing pipe road 14 (probe is at this pipeline) →
The air outlet of the passive air inlet port → ejector SLQ of ejector SLQ.
7. the air inlet of jet blower SF sucks atmospheric gas from air and is compressed, and compressed gas is sent
Input port to jet regulation valve STJF；The output port of jet regulation valve STJF and ejector SLQ
Active air inlet port gas circuit connection.
The compressed gas that jet regulation valve STJF can regulate entrance ejector SLQ actively air inlet port is how many.
In this utility model patent, sample detecting system is debugging, test when, and jet regulates valve STJF
Can be adjusted；When system is after debugging, off-test, jet regulation valve STJF the most no longer changes,
In other words, this utility model system is in daily operation, empty from jet regulation valve STJF compression out
Gas, its flow velocity, flows per unit time are substantially constant.
Further instruction, when jet regulation valve STJF compressed air flow velocity out immobilizes, enters
Ejector SLQ actively the compressed gas flow velocity of air inlet port, flows per unit time also keep constant, from jet
Mixed gas flow velocity, flows per unit time that the passive air inlet port of device SLQ pumps out also keep constant, letter
The passive air inlet port of Yan Zhi, ejector SLQ mixed gas constant flow rate out, this feature, after also
Use.
8. automation control circuit, its type can select the circuit containing CPU intelligent parts.
9. the flue gas flow rate in flue gas exhausting pipe line, is recorded by the first flow velocity testing agency 15 and is reported control
Circuit processed.
10. sample gas flow velocity, carrier gas flow velocity and gaseous mixture flow velocity, the flow velocity of this three is by second flow speed
Testing agency records and reports control circuit.
Sample gas flow velocity, carrier gas flow velocity and gaseous mixture flow velocity, for aforesaid three flow velocitys, second
As long as after any two flow velocity therein is measured by speed testing agency, it is possible to learn the stream of remaining person
Speed, is described as follows.
A. after a gas flow rate is learnt, just can learn the flow of its unit interval, its formula is: during unit
Between flow=measurement flow rate at sectional area × flow velocity.
Otherwise, after a kind of gas flows per unit time is learnt, it is possible to calculating its flow velocity, formula is: flow velocity=
The flow ÷ of unit interval measures the sectional area at flow.
B. sample gas flows per unit time, carrier gas flows per unit time, gaseous mixture flows per unit time, these are three years old
The relation of individual flows per unit time is: sample gas flows per unit time+carrier gas flows per unit time=mixed
Close gas flows per unit time.So, in three flows per unit time, as long as recording any two therein
Flows per unit time, just can calculate surplus Next flows per unit time.
C. sample gas, carrier gas, gaseous mixture, learn any both flow velocity or flows per unit time after, then remain
Flow velocity and the flows per unit time of lower person can be calculated.
11. theoretically, the flue gas in flue gas exhausting pipe line, although its flow velocity is changing constantly, but right
For flue gas exhausting pipe line in an actual motion, under normal working condition, its change in flow
Also it is within limits；We can pass through empirical data, or by measured data or logical
Cross design and the normalized number evidence produced, learn flue gas flow rate data during normal operation.Flue gas flow rate data
Including: flue gas flow rate intermediate value data, flue gas flow rate peak data, flue gas flow rate minimum data.
System design and trial-production when, we can be corresponding based on flue gas flow rate intermediate value data
Carrier gas electric control valve XDT aperture is arranged in position placed in the middle, and primarily determine that sample gas and carrier gas
Mixed proportion.Carrier gas electric control valve XDT is open at the position of centre, its objective is: be easy to output
Carrier gas flow tune up or turn down, can be with two-ways regulation；Otherwise, if being open at the limit in a direction
Position, then can only unidirectional have adjusted.
Assuming there is following situation, we are followed by deployment analysis.
Assume as follows:
Time initial, in flue gas exhausting pipe line, flue gas flow rate is intermediate value data, the sample gas flow velocity in sample gas pipe 2
Identical with flue gas flow rate, the flows per unit time of sample gas is A；During carrier gas electric control valve XDT is open at
Between position, now carrier gas flows per unit time is B, A than B equal to 1 to 3, i.e. in gaseous mixture,
Sample gas account for 25%, and carrier gas account for 75%.If the result to mixture strength detection is 1 concentration list
Position, this is concentration data after dilution；Then the sample gas actual concentration before conversion dilution is: 1 concentration unit ÷
The actual concentration of 0.25=4 concentration unit, i.e. sample gas and flue gas is 4 concentration units.
Deployment analysis is as follows:
When in flue gas exhausting pipe line, flue gas flow rate becomes big, i.e. moment occurs: flue gas flow rate in flue gas exhausting pipe line
More than the sample gas flow velocity in sample gas pipe 2；After control circuit is got the information, with regard to order carrier gas electric control valve
XDT aperture diminishes, to reduce carrier gas flows per unit time；After carrier gas flows per unit time reduces,
Necessarily cause the sample gas flows per unit time in sample gas pipe 2 to increase, i.e. flow velocity increases, and this equilibrium process is straight
Sample gas flow velocity to sample gas pipe 2 is identical with flue gas flow rate in flue gas exhausting pipe line.
Situation illustrates: talk about above, and in this utility model, ejector SLQ passive air inlet port is out
The flows per unit time of mixed gas constant flow rate, i.e. mixed gas is constant, so the flow that carrier gas reduces
It it is exactly the flow of sample gas increase.
Another kind of situation is, when in flue gas exhausting pipe line, flue gas flow rate diminishes, i.e. moment occurs: fume emission
In pipeline, flue gas flow rate is less than the sample gas flow velocity in sample gas pipe 2, after control circuit is got the information, just orders dilute
Outgassing electric control valve XDT aperture becomes big, to increase carrier gas flows per unit time；When carrier gas unit
Between flow increase after, necessarily cause the sample gas flows per unit time in sample gas pipe 2 to reduce, i.e. flow velocity reduction,
So equilibrium process is until the sample gas flow velocity in sample gas pipe 2 is identical with flue gas flow rate in flue gas exhausting pipe line.
Continue to be analyzed as follows.
When in flue gas exhausting pipe line, flue gas flow rate reaches high Value Data, the sample gas flow velocity in sample gas pipe 2, stream
Amount is also followed the tracks of and is reached high Value Data, it is assumed that sample gas flows per unit time is risen to 1.5A by original 1A,
I.e. in gaseous mixture, sample gas account for 25% × 1.5=37.5%, then carrier gas accounting is dropped to 62.5% by 75%.
If it addition, be X concentration unit to mixture strength testing result, being then converted into the true of sample gas
Concentration should be: 0.375=2.6666X concentration unit of X concentration unit ÷, i.e. sample gas and flue gas
Actual concentration is 2.6666X concentration unit.
Mixture strength, its numerical values recited is affected by carrier gas accounting, such as, in mixed gas,
Sample gas and carrier gas respectively account for 50%, then actual concentration value=mixture strength value ÷ 0.5 of sample gas.Further, right
In the sample gas of same concentration, carrier gas accounting is the highest, the concentration value of gaseous mixture is the lowest；Otherwise, carrier gas accounts for
Higher than concentration value the lowest, gaseous mixture.But, for the sample gas of same concentration, no matter mixed proportion is high
Or low, the actual concentration after its conversion is identical.So, for control circuit and detector unit CLDY
For, the detection data that they finally show and record, are preferably both the actual concentration data after conversion；Extremely
Whether the concentration value data in gaseous mixture preserve, can optionally with needs depending on.Certainly, come from principle
Saying, control circuit and detector unit CLDY can also show and record the concentration data before conversion, but this is
Observe and record archive brings inconvenience, so inventor's suggestion: the detection data showing and recording, with
Actual concentration data after conversion are preferably.There is a method in which also fine, final display and the detection number of record
According to, the concentration value data of the gaseous mixture before existing conversion, also there are the actual concentration data after conversion, by switching,
Both it can be seen that actual concentration data after Huan Suan, it is also possible to the concentration value of the gaseous mixture before conversion is seen in switching
Data.
For 12. parts detecting gas flow rate (mechanism), its most typical situation is: will pressure
A pair probe in gap sensor, in the air flue (gas circuit, trachea) of gas process, one be arranged on before,
After one is arranged on, the gas pressure difference found out from two probes converses flow speed value.Differential pressure pickup can
To buy ready-made product, Selective type, model, specification are suitably.
In 13. technical schemes, " described specific gas flow velocity refers to three: sample gas flow velocity, carrier gas flow velocity,
And gaseous mixture flow velocity, the described detection that carries out is by directly detecting, or described carry out detection be into
Row directly detection adds indirect detection ", this is made description below and explanation.
A. sample gas flow velocity, carrier gas flow velocity and gaseous mixture flow velocity, can be whole to the flow velocity of aforementioned three
Directly detecting, its benefit is that data recorder calculation is direct, convenient and reliable and the most straight to operator
Connect clear, debug, overhaul conveniently；If it addition, a certain detection parts go wrong, such as detection data
Incorrect, automation control circuit also can be by learning rapidly existing problems after calculating, thus on a display screen
Report to the police, allow operator immediately know that.Certainly, the flow velocity of three the most directly detects needs circuit to configure
Some more.
B. sample gas flow velocity, carrier gas flow velocity and gaseous mixture flow velocity, can also for aforesaid three's flow velocity
It is that directly detection adds indirect detection, as with Carapax et Plastrum Testudinis, second, the third three kinds of situations:
First situation.Sample gas flow velocity and carrier gas flow velocity directly detect, and gaseous mixture flow velocity can be by meter
Calculation obtains indirect detection result；Gaseous mixture flow velocity is not directly detected by first situation.
Second situation.Sample gas flow velocity and gaseous mixture flow velocity directly detect, and carrier gas flow velocity can be by meter
Calculation obtains indirect detection result；Carrier gas flow velocity is not directly detected by second situation.
Third situation.Carrier gas flow velocity and gaseous mixture flow velocity directly detect, and sample gas flow velocity can be by meter
Calculation obtains indirect detection result；Sample gas flow velocity is not directly detected by the third situation.
The directly detection of above-mentioned b adds indirect detection, and the whole of above-mentioned a directly detect, and both excellent lacks
The advantage of some contrast, i.e. a is exactly the deficiency of b, and the deficiency of the advantage of b a just.The advantage of b
Being that circuit configuration is simple, its deficiency is: the data having need to calculate, it has not been convenient to, reliability low, right
Operator is the most straightforward, debugs, overhauls inconvenience.
The terminals of 14. first flow velocity testing agencies 15, the terminals of second flow speed testing agency, they with
Automation control circuit electrically connects, and so, then automation control circuit just knows that flow rate detection mechanism is detected
The flow condition arrived.
15. pairs of sample gas are diluted, and have and reduce condensing drip or the effect of condensation acid droplet.
Embodiment one
Facilities in the present embodiment is as shown in Figure 4.
In the present embodiment, second flow speed testing agency includes three detection parts, they respectively: at sample
The sample gas flow rate detection parts 18 arranged at trachea 2, the mixed gas velocity arranged at gas mixing pipe road 14 detection
Parts 19, and the gas circuit between carrier gas electric control valve XDT output interface and air mixing machine structure 13 is logical
The carrier gas flow velocity detection part 16 arranged at road.
After every debugging completes, under daily duty, the aperture of jet regulation valve STJF is no longer
Variation, all protects so entering ejector SLQ actively the compressed gas flow velocity of air inlet port, flows per unit time
Hold constant；The passive air inlet port of ejector SLQ mixed gas constant flow rate out.
Mixed gas is mixed by sample gas and diluent gas.Obviously, in mixed gas, if carrier gas
Body proportion is big, then the ratio shared by sample gas is the least；Otherwise, if diluent gas proportion is little, then sample
Ratio shared by gas is the biggest.The size of sample gas ratio, is directly connected to the size of sample gas flow velocity, therefore,
Make sample gas flow velocity become big, then can be by diluent gas flow velocity (i.e. accounting) to minor adjustment；In turn, make
Obtain sample gas flow velocity to diminish, then can be by diluent gas flow velocity (i.e. accounting) to big regulation.
In the present embodiment, flue gas flow rate in flue gas exhausting pipe line 5 is examined by the first flow velocity testing agency 15
Survey and report to automation control circuit；The sample gas flow rate detection parts 18 of second flow speed testing agency are right
Sample gas flow velocity in sample gas pipe 2 detects and reports to automation control circuit.
After knowing flue gas flow rate and sample gas flow velocity, flue gas flow rate and sample gas flow velocity are carried out by automation control circuit
Compare, and point following three kinds of situations process.
The first situation, if sample gas flow velocity and flue gas flow rate very very close to, and allow error model
In enclosing, then the state that carrier gas electric control valve XDT keeps current is constant.
The second situation, if sample gas flow velocity is more than flue gas flow rate, the difference of both flow velocitys is beyond permission
Range of error, then automation control circuit order carrier gas electric control valve XDT aperture becomes big, diluent gas
Flow velocity becomes big, and sample gas flow velocity reduces, until sample gas flow velocity and flue gas flow rate are convergent.
The third situation, if sample gas flow velocity is less than flue gas flow rate, the difference of both flow velocitys is beyond permission
Range of error, then automation control circuit order carrier gas electric control valve XDT aperture diminishes, diluent gas
Flow velocity diminishes, and sample gas flow velocity accelerates, until sample gas flow velocity and flue gas flow rate are convergent.
Although the flue gas flow rate in flue gas exhausting pipe line 5 is in constantly change, but, through three of the above feelings
The different disposal of condition, so that sample gas flow velocity keeps consistent with flue gas flow rate.
Owing to carrier gas flow velocity, sample gas flow velocity and gaseous mixture flow velocity are all known by automation control circuit
, so being the most all to grasp to the accounting of the diluent gas in mixed gas, the accounting of sample gas gas.From
Dynamicization control circuit is after obtaining current mixture strength Value Data, before can conversing dilution very easily
Sample gas concentration.It is of importance that owing to sample gas flow velocity is consistent with flue gas flow rate, sample gas concentration reflects truly
Flue gas concentration, so this utility model system can detect the concentration of flue gas in real time, exactly.
Embodiment two
Facilities in the present embodiment is as shown in Figure 5.
In the present embodiment, sample gas flow rate detection parts 18 are set at sample gas pipe 2, and in gas mixing pipe road
Mixed gas velocity detection part 19 is set at 14.
Receive sample gas flow rate detection parts 18 and after Monitoring Data that mixed gas velocity detection part 19 is sent here, from
Dynamicization control circuit can obtain the data such as carrier gas flow velocity, carrier gas flow by calculating.
Embodiment three
Facilities in the present embodiment is as shown in Figure 6.
In the present embodiment, at sample gas pipe 2, it is provided with sample gas flow rate detection parts 18, and at carrier gas
It is provided with carrier gas flow velocity at gas channels between electric control valve XDT output interface and air mixing machine structure 13
Detection part 16.
Receive sample gas flow rate detection parts 18 and after Monitoring Data that carrier gas flow velocity detection part 16 is sent here,
Automation control circuit can be by calculating data such as obtaining gaseous mixture flow velocity, mixed gas flow.
Embodiment four
Facilities in the present embodiment is as shown in Figure 7.
In the present embodiment, mixed gas velocity detection part 19 is set at gas mixing pipe road 14, and at carrier gas
The inspection of carrier gas flow velocity is set at the gas channels between electric control valve XDT output interface and air mixing machine structure 13
Survey parts 16.
Receive carrier gas flow velocity detection part 16 and after Monitoring Data that mixed gas velocity detection part 19 is sent here,
Automation control circuit can obtain the data such as sample gas flow velocity, sample gas flow by calculating.
Embodiment five
See Fig. 8.
Utility model system in the present embodiment includes: sample gas Heat preservation parts 31.
Automation control circuit includes power circuit；When sample gas Heat preservation parts 31 are connected with power circuit
After, it is thus achieved that electric energy produces heat energy so that sample gas in sample gas pipe 2 keeps original higher temperature state and base
This does not declines.
Sample gas Heat preservation parts 31 can be designed as persistently being energized, in such cases, and sample gas Heat preservation
The electric energy that parts 31 consume is less, and continuous energising does not haves too high temperature yet；Sample gas Heat preservation portion
Part 31 may be designed in discontinuously energising, when the temperature that sample gas Heat preservation parts 31 produce arrives high level,
Automation control circuit order is cut off the electricity supply, is no longer heat up；And when the temperature of sample gas Heat preservation parts 31
When dropping to a certain temperature value, automation control circuit order switches on power, restarts heating.
Sample gas Heat preservation parts 31 heat the power circuit that connect, it is possible to use electric network source, as 220V,
380V power supply；For the sake of security, it is possible to use the low-voltage AC or straight of the safety such as 36V or 24V
Stream electricity.
Illustrate: if sample gas temperature declines, easily produce the unfavorable condition such as condensing drip or condensation acid droplet.
Embodiment six
See Fig. 9.
Utility model system in the present embodiment includes: carrier gas heater block 32.Carrier gas blower fan XF's
Gas outlet is connected by dilution heating connecting tube with the input interface of carrier gas electric control valve XDT；Described
Carrier gas heater block 32, it is arranged at dilution heating connecting tube, its terminals and Automated condtrol electricity
Road electrically connects.
Automation control circuit includes power circuit；After carrier gas heater block 32 is connected with power circuit,
Obtain electric energy and produce heat energy so that diluent gas temperature improves, and close with the temperature of flue gas, sample gas, from
And avoid producing the unfavorable condition such as condensing drip or condensation acid droplet.
Carrier gas heater block 32 can be designed as persistently being energized, in such cases, and carrier gas heater block
32 electric energy consumed are less, and continuous energising does not haves too high temperature yet；Carrier gas heater block 32 is also
Can be designed as discontinuously being energized, when the temperature that carrier gas heater block 32 produces arrives high level, automatization
Control circuit order is cut off the electricity supply, is no longer heat up；And drop to certain at a temperature of carrier gas heater block 32
During one temperature value, automation control circuit order switches on power, restarts heating.
Carrier gas heater block 32 heats the power circuit that connect, it is possible to use electric network source, as 220V,
380V power supply；For the sake of security, it is possible to use the low-voltage AC or straight of the safety such as 36V or 24V
Stream electricity.
Embodiment seven
See Figure 10.
Utility model system in the present embodiment includes: jet gas heater block 33.Jet blower SF goes out
QI KOU adds heat pipe with the input port of jet regulation valve STJF by jet and connects；Described jet gas heating
Parts 33, it is arranged on jet and adds at heat pipe, and its terminals electrically connect with automation control circuit；Described
Automation control circuit include power circuit.
Automation control circuit includes power circuit；After jet gas heater block 33 is connected with power circuit,
Obtain electric energy and produce heat energy, finally make to enter the temperature of the ejector SLQ actively compressed gas of air inlet port
Improve, and close with the temperature of flue gas, sample gas, thus avoid producing condensing drip or condensation acid droplet etc. no
Good situation.
Jet gas heater block 33 can be designed as persistently being energized, in such cases, and jet gas heater block
33 electric energy consumed are less, and continuous energising does not haves too high temperature yet；Jet gas heater block 33 is also
Can be designed as discontinuously being energized, when the temperature that jet gas heater block 33 produces arrives high level, automatization
Control circuit order is cut off the electricity supply, is no longer heat up；And drop to a certain at a temperature of jet gas heater block 33
During temperature value, automation control circuit order switches on power, restarts heating.
Jet gas heater block 33 heats the power circuit that connect, it is possible to use electric network source, as 220V,
380V power supply；For the sake of security, it is possible to use the low-voltage AC or straight of the safety such as 36V or 24V
Stream electricity.
Embodiment eight
Detecting system works after a period of time, occurs the most throughout and accumulates some dust, affecting system
Normally, reliably, correctly work.The cleaning measure that routine techniques uses is: detecting system quits work,
Artificial unloading's related components, and manually it is cleaned work, the most manually ressemble recovery, then
Work on.
For above-mentioned cleaning, the present embodiment utility model system uses full-automatic technology, and speed is fast,
Time is short, it is not necessary to staff's manual labour, also makes system more reliable and more stable.
Illustrate in conjunction with Figure 11, Figure 12, Figure 13 and Figure 14.
The utility model system of the present embodiment includes: blowback cleaning mechanism.
Blowback cleaning mechanism includes: electric T-shaped valve STF and blowback electromagnetic valve FCF；Electric T-shaped valve STF
Containing first interface S1, the second interface S2 and the 3rd interface S3；Blowback electromagnetic valve FCF contains input interface
And output interface.Gas mixing pipe road 14 includes anterior pipeline and rear portion pipeline；Air mixing machine structure 13, gas mixing pipe road
Anterior pipeline, the first interface S1 of electric T-shaped valve STF, this three order gas circuit connection；Electronic three
The second interface S2 of logical valve STF, the rear portion pipeline in gas mixing pipe road, the passive air inlet port of ejector SLQ,
This three's order gas circuit connection；The 3rd interface S3 of electric T-shaped valve STF regulates valve by trachea with jet
The outfan gas circuit connection of STJF.Blowback electromagnetic valve FCF, its input interface and carrier gas electric control valve
The input interface gas circuit connection of XDT, its output interface connects with the rear portion pipeline gas circuit in gas mixing pipe road.Electronic
The terminals of three-way valve STF electrically connect with automation control circuit；The terminals of blowback electromagnetic valve FCF with from
Dynamicization control circuit electrically connects.The probe of detector unit CLDY is arranged at the rear portion pipeline in gas mixing pipe road.
The hardware case of blowback cleaning mechanism described above, sees Figure 11 and understands.Below, right
Relevant working condition and operation principle are introduced.
Figure 11 have expressed system when being in detection work, the trend of each air-flow, and each small arrow represents institute in place
Put the direction of travel of air-flow.In this Figure 11, first it should be noted that blowback electromagnetic valve FCF closes
Close cut-out (the most obstructed)；Second point is it should be noted that the first interface S1 of electric T-shaped valve STF and
Two interface S2 lead directly to, and the 3rd interface S3 closes and cuts off (the most obstructed).3rd interface S3 closes the meaning cut off
Think of is: the 3rd interface S3 not only blocked with first interface S1, but also block with the second interface S2.Figure 12 is figure
The equivalent schematic drawing of the gas circuit walking situation of 11.Understand it addition, compare Figure 12 and Fig. 4, each in two figures
Air-flow walking situation duplicates, and both working conditions also duplicate.
Figure 13 be have expressed system be in blowback cleaning time, the trend of relevant gas flow, each small arrow represents institute
Direction of travel at position air-flow.Figure 14 is the equivalent schematic drawing of the gas circuit walking situation of Figure 13.
When cleaning is needed, detection work temporarily ceases, and system enters cleaning state.
When cleaning starts, control circuit sends instruction: blowback electromagnetic valve FCF action, electric three passes
Valve STF action.In the cleaning condition, the first interface S1 and the second interface S2 of electric T-shaped valve STF
Between block；And the 3rd interface S3 and first interface S1 connects, the 3rd interface S3 and the second interface S2
Between block.Under clean conditions, between input interface and the output interface of blowback electromagnetic valve FCF, gas circuit is connected.
Under clean conditions, the gas that carrier gas electric control valve XDT comes, the first interface of electric T-shaped valve STF
The gas that S1 comes, after these two strands of gases enter mixed gas bucket 3, then through sample gas pipe 2, to smoke discharge pipe
Road 5 is discharged so that dust is removed；If the left end of sample gas pipe 2 is also equipped with filtering head,
The dust on filtering head is then made to have obtained effective removing.Under clean conditions, blowback electromagnetic valve FCF output interface
The gas come over, its powerful position through probe place, make the dust on probe be removed.
After cleaning operation completes, control circuit sends instruction again: blowback electromagnetic valve FCF and electric T-shaped valve
STF all restores to the original state, and system proceeds original detection work.
Detection work and cleaning operation alternate cycles are carried out, and wherein the detection working time is relatively long, and cleans
Activity duration is very the briefest.
Embodiment nine
Utility model system in the present embodiment includes: carrier gas heater block 32 and blowback cleaning mechanism.
Illustrate in conjunction with Figure 15；System in this figure is in detection state, the small arrow generation everywhere in figure
Air-flow trend at table place.
The operation principle of blowback cleaning mechanism makes a detailed introduction in embodiment eight, does not the most remake weight
Repeat again.
The gas outlet of carrier gas blower fan XF is added by dilution with the input interface of carrier gas electric control valve XDT
Thermally coupled pipe connects；Carrier gas heater block 32 is arranged at dilution heating connecting tube.
Blowback electromagnetic valve FCF, its input interface with dilution heating connecting tube gas circuit connect, its output interface and
The rear portion pipeline gas circuit connection in gas mixing pipe road.
Owing to being provided with carrier gas heater block 32 so that carrier gas blower fan XF gas temperature out is added
Heat and be improved, therefore, no matter system is in detection state or is in blowback clean conditions,
Avoid the appearance of the unfavorable condition such as condensing drip or condensation acid droplet.
Embodiment ten
Utility model system in the present embodiment includes: sample gas Heat preservation parts 31, carrier gas heating part
Part 32, jet gas heater block 33, and blowback cleaning mechanism.
Illustrate in conjunction with Figure 16；System in this figure is in detection state, the small arrow generation everywhere in figure
Air-flow trend at table place.
The operation principle of blowback cleaning mechanism makes a detailed introduction in embodiment eight, does not the most remake weight
Repeat again.
Sample gas Heat preservation parts 31 are arranged at sample gas pipe 2；Sample gas Heat preservation parts 31 can make sample
Gas continues to original temperature during walking in sample gas pipe 2.
The gas outlet of carrier gas blower fan XF is added by dilution with the input interface of carrier gas electric control valve XDT
Thermally coupled pipe connects；Carrier gas heater block 32 is arranged at dilution heating connecting tube.Dilute owing to being provided with
Outgassing heater block 32 so that carrier gas blower fan XF gas temperature out is heated and is improved.
The input port that the gas outlet of jet blower SF regulates valve STJF with jet heats connecting tube by jet
Connection；Jet gas heater block 33 is arranged at jet heating connecting tube.Jet gas heater block 33 makes
Jet blower SF compressed gas temperature out is improved.
At three, heater block (refers to sample gas Heat preservation parts 31, carrier gas heater block 32 and jet
Gas heater block 33) it is possible not only to make system stop condensing drip or condensation acid droplet etc. when the state of detection
The appearance of unfavorable condition, and obtain good technique effect；And system can be made when blowback clean conditions
Stop the appearance of the unfavorable condition such as condensing drip or condensation acid droplet；Moreover, shape is cleaned in blowback
State is changed into the moment of detection duty, and each position of system all keeps the specific condition of high temperature, will not
Of short duration low temperature condition occurs, thus has stopped going out of the unfavorable condition such as condensing drip or condensation acid droplet completely
Existing.
The explanation of above-mentioned low temperature condition.If during blowback cleaning, the air-flow of purging is the most heated, then blowback cleaning
At the end of the temperature at each position of system can be greatly lowered.
Above-mentioned specific high temperature, refers to the temperature of flue gas in flue gas exhausting pipe line 5, or close with flue gas
Temperature.
Sample gas is diluted, has and reduce condensing drip or the effect of condensation acid droplet, then add at superposition three
The multiple action effect of heat, can avoiding the occurrence of condensing drip or condensing acid droplet in system the most completely.
Certainly, for departing from the present embodiment, if only arranging at one while sample gas dilution or heating at two,
Also there is preferable technique effect, but at ratio three, the technique effect of heating is less better.
Claims (9)
1. a novel constant speed flue gas sampling detecting system, is characterized in that: including: automation control circuit,
Sample gas pipe (2), air mixing machine structure (13), gas mixing pipe road (14), containing the detector unit (CLDY) of probe,
Ejector (SLQ), jet regulation valve (STJF), jet blower (SF), carrier gas blower fan (XF), right
The carrier gas electric control valve (XDT) that carrier gas uninterrupted regulates in real time, to flue gas exhausting pipe line (5)
Interior flue gas flow rate makees the first flow velocity testing agency (15) of detecting, detect specific gas flow velocity the
Two flow velocity testing agencies；Described specific gas flow velocity refers to three: sample gas flow velocity, carrier gas flow velocity, with
And gaseous mixture flow velocity, the described detection that carries out is by directly detecting, or the described detection that carries out is by
Directly detection adds indirect detection；Described ejector (SLQ) is containing actively air inlet port, passive inlet end
Mouth and air outlet；
One end of sample gas pipe (2) is deeply internal to flue gas exhausting pipe line (5), the other end of sample gas pipe (2)
Connect with air mixing machine structure (13) gas circuit；Air mixing machine structure (13) connects with one end gas circuit in gas mixing pipe road (14)
Logical, the other end of gas mixing pipe road (14) connects with the passive air inlet port gas circuit of ejector (SLQ)；
Described carrier gas blower fan (XF), its air inlet and atmosphere；Carrier gas blower fan (XF) goes out
QI KOU connects with the input interface gas circuit of carrier gas electric control valve (XDT)；Carrier gas electric control valve (XDT)
Output interface connect with air mixing machine structure (13) gas circuit；The terminals of carrier gas electric control valve (XDT)
Electrically connect with automation control circuit；
Described jet blower (SF), its air inlet and atmosphere, its gas outlet regulates valve with jet
(STJF) input port gas circuit connection；The output port of jet regulation valve (STJF) and ejector (SLQ)
Active air inlet port gas circuit connection；
The probe of detector unit (CLDY) is arranged on the body portion in gas mixing pipe road (14)；
First flow velocity testing agency (15), it is interior that it is arranged on flue gas exhausting pipe line (5), and its terminals are with automatic
Change control circuit electrical connection；
The terminals of second flow speed testing agency electrically connect with automation control circuit.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described second flow speed testing agency, it is provided that
Sample gas flow rate detection parts (18) is set at sample gas pipe (2) place, arranges at gas mixing pipe road (14) place
Mixed gas velocity detection part (19), and at carrier gas electric control valve (XDT) output interface and air mixing machine
Carrier gas flow velocity detection part (16) is set at the gas channels between structure (13).
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described second flow speed testing agency, it is set to any one in following three:
A., sample gas flow rate detection parts (18) is set at sample gas pipe (2) place, and in gas mixing pipe road (14)
Place arranges mixed gas velocity detection part (19)；
B. sample gas flow rate detection parts (18) is set at sample gas pipe (2) place, and in carrier gas motorized adjustment
At gas channels between valve (XDT) output interface and air mixing machine structure (13), carrier gas flow rate detection is set
Parts (16)；
C., mixed gas velocity detection part (19) is set at gas mixing pipe road (14) place, and electronic at carrier gas
At gas channels between regulation valve (XDT) output interface and air mixing machine structure (13), carrier gas flow velocity is set
Detection part (16).
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: sample gas Heat preservation parts (31), and it is arranged on sample gas pipe (2) place, its wiring
End electrically connects with automation control circuit；Described automation control circuit includes power circuit.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: carrier gas heater block (32)；
The input interface of the gas outlet of carrier gas blower fan (XF) and carrier gas electric control valve (XDT) passes through
Dilution heating connecting tube connection；Described carrier gas heater block (32), it is arranged on dilution heating connecting tube
Place, its terminals electrically connect with automation control circuit；Described automation control circuit includes power circuit.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: jet gas heater block (33)；
The input port that the gas outlet of jet blower (SF) regulates valve (STJF) with jet is heated by jet
Pipe connects；Described jet gas heater block (33), it is arranged on jet and adds at heat pipe, its terminals with
Automation control circuit electrically connects；Described automation control circuit includes power circuit.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: blowback cleaning mechanism；
Described blowback cleaning mechanism includes: electric T-shaped valve (STF) and blowback electromagnetic valve (FCF)；Electricity
Dynamic three-way valve (STF) is containing first interface (S1), the second interface (S2) and the 3rd interface (S3)；Instead
Blow electromagnetic valve (FCF) containing input interface and output interface；
Described gas mixing pipe road (14) includes anterior pipeline and rear portion pipeline；Air mixing machine structure (13), mixed gas
The anterior pipeline of pipeline, the first interface (S1) of electric T-shaped valve (STF), this three's order gas circuit connection；
Second interface (S2) of electric T-shaped valve (STF), the rear portion pipeline in gas mixing pipe road, ejector (SLQ)
Passive air inlet port, this three order gas circuit connection；3rd interface (S3) of electric T-shaped valve (STF)
Connected by the outfan gas circuit of trachea with jet regulation valve (STJF)；
Described blowback electromagnetic valve (FCF), its input interface is defeated with carrier gas electric control valve (XDT)
Incoming interface gas circuit connects, and its output interface connects with the rear portion pipeline gas circuit in gas mixing pipe road；
The terminals of electric T-shaped valve (STF) electrically connect with automation control circuit；Blowback electromagnetic valve (FCF)
Terminals electrically connect with automation control circuit；
The probe of detector unit (CLDY) is arranged at the rear portion pipeline in gas mixing pipe road.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: carrier gas heater block (32) and blowback cleaning mechanism；
The input interface of the gas outlet of carrier gas blower fan (XF) and carrier gas electric control valve (XDT) passes through
Dilution heating connecting tube connection；Described carrier gas heater block (32), it is arranged on dilution heating connecting tube
Place；
Described blowback cleaning mechanism includes: electric T-shaped valve (STF) and blowback electromagnetic valve (FCF)；Electricity
Dynamic three-way valve (STF) is containing first interface (S1), the second interface (S2) and the 3rd interface (S3)；Instead
Blow electromagnetic valve (FCF) containing input interface and output interface；
Described gas mixing pipe road (14) includes anterior pipeline and rear portion pipeline；Air mixing machine structure (13), mixed gas
The anterior pipeline of pipeline, the first interface (S1) of electric T-shaped valve (STF), this three's order gas circuit connection；
Second interface (S2) of electric T-shaped valve (STF), the rear portion pipeline in gas mixing pipe road, ejector (SLQ)
Passive air inlet port, this three order gas circuit connection；3rd interface (S3) of electric T-shaped valve (STF)
Connected by the outfan gas circuit of trachea with jet regulation valve (STJF)；
Described blowback electromagnetic valve (FCF), its input interface connects with dilution heating connecting tube gas circuit, and it is defeated
Outgoing interface connects with the rear portion pipeline gas circuit in gas mixing pipe road；
The terminals of carrier gas heater block (32) electrically connect with automation control circuit；Electric T-shaped valve
(STF) terminals electrically connect with automation control circuit；The terminals of blowback electromagnetic valve (FCF) with from
Dynamicization control circuit electrically connects；Described automation control circuit includes power circuit；
The probe of detector unit (CLDY) is arranged at the rear portion pipeline in gas mixing pipe road.
One the most according to claim 1 novel constant speed flue gas sampling detecting system, is characterized in that:
Described system includes: sample gas Heat preservation parts (31), carrier gas heater block (32), and jet gas heats
Parts (33), and blowback cleaning mechanism；
Described sample gas Heat preservation parts (31), it is arranged on sample gas pipe (2) place；
The input interface of the gas outlet of carrier gas blower fan (XF) and carrier gas electric control valve (XDT) passes through
Dilution heating connecting tube connection；Described carrier gas heater block (32), it is arranged on dilution heating connecting tube
Place；
The input port that the gas outlet of jet blower (SF) regulates valve (STJF) with jet is heated by jet
Connecting tube connects；Described jet gas heater block (33), it is arranged at jet heating connecting tube；
Described blowback cleaning mechanism includes: electric T-shaped valve (STF) and blowback electromagnetic valve (FCF)；Electricity
Dynamic three-way valve (STF) is containing first interface (S1), the second interface (S2) and the 3rd interface (S3)；Instead
Blow electromagnetic valve (FCF) containing input interface and output interface；
Described gas mixing pipe road (14) includes anterior pipeline and rear portion pipeline；Air mixing machine structure (13), mixed gas
The anterior pipeline of pipeline, the first interface (S1) of electric T-shaped valve (STF), this three's order gas circuit connection；
Second interface (S2) of electric T-shaped valve (STF), the rear portion pipeline in gas mixing pipe road, ejector (SLQ)
Passive air inlet port, this three order gas circuit connection；3rd interface (S3) of electric T-shaped valve (STF)
Connected with jet heating connecting tube gas circuit by trachea；
Described blowback electromagnetic valve (FCF), its input interface connects with dilution heating connecting tube gas circuit, and it is defeated
Outgoing interface connects with the rear portion pipeline gas circuit in gas mixing pipe road；
The probe of detector unit (CLDY) is arranged at the rear portion pipeline in gas mixing pipe road；
The terminals of sample gas Heat preservation parts (31) electrically connect with automation control circuit；Carrier gas heating part
The terminals of part (32) electrically connect with automation control circuit；The terminals of jet gas heater block (33) with
Automation control circuit electrically connects；The terminals of electric T-shaped valve (STF) are electrically connected with automation control circuit
Connect；The terminals of blowback electromagnetic valve (FCF) electrically connect with automation control circuit；Described automatization's control
Circuit processed includes power circuit.
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| CN201620248512.4U CN205506489U (en) | 2016-03-29 | 2016-03-29 | Novel constant speed flue gas sampling detecting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107238519A (en) * | 2016-03-29 | 2017-10-10 | 上海北分科技股份有限公司 | A kind of constant speed flue gas sampling detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238519A (en) * | 2016-03-29 | 2017-10-10 | 上海北分科技股份有限公司 | A kind of constant speed flue gas sampling detecting system |
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