CN206818487U - A kind of Multifunctional tobacco bicycle pump automatic sampling system - Google Patents

A kind of Multifunctional tobacco bicycle pump automatic sampling system Download PDF

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Publication number
CN206818487U
CN206818487U CN201720475308.0U CN201720475308U CN206818487U CN 206818487 U CN206818487 U CN 206818487U CN 201720475308 U CN201720475308 U CN 201720475308U CN 206818487 U CN206818487 U CN 206818487U
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flue gas
sampling gun
sampling
pedestal
valve
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CN201720475308.0U
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张锴
王光宇
滕阳
刘芸
关彦军
苏尚勇
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North China Electric Power University
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North China Electric Power University
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Abstract

It the utility model is related to a kind of Multifunctional tobacco bicycle pump automatic sampling system.The system includes:Sampling gun, it is connected and composed by sampling gun top and sampling gun pedestal, is provided with thief hole and flue gas hybrid chamber on sampling gun top, thermocouple can also be set at thief hole;Filter screen is provided with sampling gun pedestal, and adsorption tube and flue gas analysis probe tube are provided with the outlet side of sampling gun pedestal, being further provided with blowback air entrance in sampling gun pedestal is used for cleaning of blowing;Flow measurement device, it is connected with adsorption tube, to measure flue gas flow;Aspiration pump;Flue gas analyzer, it is connected with flue gas analysis probe tube, to flue gas analysis.Further comprise that computer carries out data real-time display, record, processing and remote control.The utility model flue gas sampling is more representative, can carry out collection analysis and the detection of other components of mercury simultaneously, it is ensured that sampled simultaneously from same point, improve measurement efficiency and accuracy;The Temperature Distribution in flue can also be measured simultaneously.

Description

A kind of Multifunctional tobacco bicycle pump automatic sampling system
Technical field
The utility model belongs to stack-gas analysis technology field, more particularly to a kind of Multifunctional tobacco bicycle pump automatic sampling system.
Background technology
In recent years, because trace element particularly mercury is in the disguise shown in environmental pollution representation, high volatile, easy to migrate Property, high biological be accumulative and its potential lasting harmfulness, causes the extensive concern of international community.Coal-burning power plant is maximum Artificial mercury pollution source, the mercury in coal enter open environment by burning, are migrated, converted and reallocated, environmental pollution day Become serious.
The measure for the discharge capacity that can preferably reduce coal-fired mercury is administered to the rear gas detection discharged after coal combustion, this is just It is required that flue gas must be sampled and measured.Existing gas mercury sampling gun, sample point is single, dumb, and sampling does not have generation Table, and sampling gun cleaning is inconvenient.When measuring flue-gas temperature, it is necessary to which thermocouple is strapped on sampling gun with iron wire, Considerably increase the workload of experiment.
In order to study oxidation removal efficiency of the SCR catalyst to mercury and the reduction efficiency to NO, mercury and NO sampling and inspection The problem of survey is extremely important.But in existing technology, only to NO in flue gas or the independent method for sampling and detecting of mercury, do not have also The method for having while sampling and detecting to both, this is easy for causing smoke sampling without representativeness.
In thermal power generation and coal chemical technology, after coal dust firing or gasification, caused flue gas need to be monitored in real time, The combustible such as pollutant, carbon monoxide, hydrogen and the remaining oxygens such as nitrogen oxides therein, sulfur dioxide are paid close attention to, is The parameter adjustment of the firing optimization or gasification furnace of boiler provides accurate information.In order to which smoke components measurement can accurately be carried out, Flue gas need to be taken out out of boiler or gasification furnace, and carry out purified treatment, so as to obtain the qualified cigarette available for instrument detection Gas.At present to flue gas in power station boiler composition measurement, more using single thin iron pipe, only both ends open, one end insertion cigarette Road, other end connection flue gas analyzer, is progressively extracted probe tube by certain length branch during measurement, and each point surveys one group of number According to reaching whole cross section gridding method target detection.And after terminating to smoke components measurement, will during to boiler flue gas temperature measurement The iron pipe of test smoke components is replaced with the pipe of flue gas temperature measurement, and conventional is several sleeve pipes mutually to be socket-connected by internal and external threads, Inside pipe casing is equipped with thermocouple, and tube end connects hand-held temperature measuring set, so as to realize to smoke temperature measurement.The method cigarette Gas composition test can not be carried out synchronously with flue gas temperature measurement, and time of measuring is longer, and workload is big, and human error is big and measurement is accurate Property is low.
Therefore, producing one kind can sample to mercury simultaneously and fume component analysis is detected, and can carry out flue gas temperature measurement Device, it is existing to solve the problems, such as, be of great practical significance.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of Multifunctional tobacco bicycle pump automatic sampling system.
A kind of Multifunctional tobacco bicycle pump automatic sampling system, the system include,
Sampling gun, it is connected and composed by sampling gun top and sampling gun pedestal;The sampling gun top is cavity structure, far End closure, and the side wall on sampling gun top is provided with 1 to multiple thief holes;The sampling gun pedestal is cavity structure, is being sampled Filter screen is provided with rifle pedestal, and adsorption tube and flue gas analysis probe tube are provided with the outlet side of sampling gun pedestal;
Flow measurement device, it is connected with adsorption tube, to measure flue gas flow;In flow measurement device and adsorption tube Connecting line is provided with valve;
Aspiration pump, it is connected on the pipeline that collection gas mercury measures with flue gas flow;
Flue gas analyzer, it is connected with flue gas analysis probe tube, to flue gas analysis;In flue gas analyzer and flue gas analysis The connecting line of probe tube is provided with valve.
In a kind of embodiment, the sampling gun top is detachably connected by 1 to multistage probe tube to be formed;In the sampling Pipe is provided with thief hole.
In a kind of embodiment, the inwall of the sampling gun is covered with zone of heating.
In a kind of embodiment, thermocouple is respectively equipped with each thief hole.
In a kind of embodiment, two adsorption tubes, the corresponding flowmeter of each adsorption tube are provided with sampling gun pedestal Measure device.
In a kind of embodiment, the adsorption tube is connected to deacidification device through heat traced pipeline, deacidification device, dehydrating unit, Flow measurement device, aspiration pump are sequentially connected.
In a kind of embodiment, on sampling gun pedestal, the front and rear sides of the filter screen are respectively equipped with temperature, pressure measurement Device.
In a kind of embodiment, the filter screen is the tubular structure of porous mesh sheet winding.
In a kind of embodiment, it is connected on sampling gun pedestal provided with blowback air entrance with compressed air line, by valve Control the opening and closing of blowback air entrance.
In a kind of embodiment, the system also includes computer, and it is used for data real-time display, record, processing and process Monitoring, and the start and stop of control aspiration pump and the opening and closing of valve, it is sampled the remote control of process.
The beneficial effects of the utility model are:
1st, the utility model can carry out flue gas multidraw, and cavity of the sampling flue gas on sampling gun top is sufficiently mixed, Make the flue gas that takes representative.The length of sampling gun can be adjusted according to the width of flue to the quantity of probe tube, and And thief hole can be blocked as needed.The utility model can improve the representative, flexible of flue gas in power station boiler sampling Property, convenience, and can effectively reduce measurement the working time.
2nd, the utility model can measure the temperature of each sample point, measure the temperature field in flue indirectly, simplify Work, it is not necessary to for measurement temperature individually to temperature survey in flue.
3rd, the flue gas of two absorption pipelines is independently handled all the time, and two groups of gases do not intersect, and ensure that every One gas circuit has independent gas mercury harvester and independent flow measurement device, it is ensured that both comparability, it is real Showed can Parallel Sampling, as a result can mutually calibrate.
4th, have filter in sampling gun of the present utility model, can in the environment of high ash sampled measurements, prevent from adsorbing Blockage, expand use range.
5th, the utility model has automatic back blow function, in that context it may be convenient to cleans sampling gun, can not only prevent flue dust from blocking up Pipeline is filled in, reduces the risk of experimental terminal, improves the efficiency and accuracy of sampling, and operator may be located remotely from noise and powder Dirt regional work, personal injury is reduced, it is simple to operate.
6th, the utility model can be while mercury in flue gas be gathered to other compositions such as the sulfur dioxide, oxygen, NO of flue gas Analyzed, it is ensured that sampled simultaneously from same point, reduce measurement error, improve measurement efficiency and accuracy.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Multifunctional tobacco bicycle pump automatic sampling system in embodiment.
Fig. 2 is a kind of profile of sampling gun in embodiment.
Label declaration:1- sampling guns, 2- heat traced pipelines, the valves of 3- first, the valves of 4- second, the deacidification devices of 5-1- first, The deacidification devices of 5-2- second, the dehydrating units of 6-1- first, the dehydrating units of 6-2- second, 7-1- first flows metering device, 7-2- Second flow measures device, the aspiration pumps of 8-1- first, the aspiration pumps of 8-2- second, 9- computers, 10- flue gas analyzers, 11- the 3rd Valve, the valves of 12- the 4th, 13- blowback air entrances, 1-1- sampling guns top, 1-2- thief holes, 1-3- thermocouples, 1-4- nuts, 1-5- sampling gun pedestals, 1-6- temperature, pressure measurement apparatus, 1-7- filter screens, the adsorption tubes of 1-8- first, the adsorption tubes of 1-9- second, 1- 10- flue gas analysis probe tubes.
Embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.It is it is emphasized that following Illustrate what is be merely exemplary, rather than in order to limit the scope of the utility model and its application.
It is a kind of Multifunctional tobacco bicycle pump automatic sampling system provided by the utility model as shown in Figure 1, the system includes taking Sample rifle 1, flow measurement device, flue gas analyzer, aspiration pump, and the computer 9 of remote control is carried out, carried out by computer 9 Real-time display, record, analysis and the monitoring of sampling process of data.
The sampling gun 1 is connected and composed by sampling gun top 1-1 and sampling gun pedestal 1-5, as shown in Figure 2.In sampling gun Zone of heating is also covered with top 1-1 and sampling gun pedestal 1-5 inwall, internal temperature is maintained more than 120 DEG C.
The sampling gun top 1-1 is connected through a screw thread by multistage probe tube to be formed, and thief hole 1- is provided with probe tube 2, the probe tube end seals of distalmost end.Sampling gun top 1-1 internal cavities are flue gas hybrid chamber.Can be according to the width of flue The quantity of degree adjustment probe tube, and each thief hole 1-2 is designed with supporting bolt, can be as needed with bolt to sampling Hole is blocked, to make the flue gas taken more representative.Thermocouple 1-3 is respectively equipped with each thief hole 1-2, The temperature of correspondence position in flue can be measured, obtains the Temperature Distribution in flue.Can on the outer wall of sampling gun 1 welded nut 1-4, thermocouple 1-3 are fixed on the outside of sampling gun 1 by being welded on nut 1-4, to prevent the temperature in sampling gun 1 from influenceing Temperature in thermocouple 1-3 measurement flues.
The sampling gun pedestal 1-5 is cavity structure, and filter screen 1-7 is provided with sampling gun pedestal 1-5, and filter screen 1-7 is used The tubular structure of porous mesh sheet winding, can filter to flue gas, prevent flue dust from entering subsequent pipeline and device, protection equipment Do not suffer damage.
The first adsorption tube 1-8, the second adsorption tube 1-9 and flue gas analysis are provided with sampling gun pedestal 1-5 outlet side side by side Probe tube 1-10, the first adsorption tube 1-8, the second adsorption tube 1-9, flue gas analysis probe tube 1-10 can be dismantled and changed.The One adsorption tube 1-8, the second adsorption tube 1-9 and flue gas analysis probe tube 1-10 is high temperature resistant and non-breakable quartz ampoule, First adsorption tube 1-8, the second adsorption tube 1-9 are mounted with the adsorbent of Adsorption of Mercury.
First adsorption tube 1-8 is connected through heat traced pipeline 2 with the first deacidification device 5-1, and the first deacidification device 5-1, first remove Wet device 6-1, first flow metering device 7-1 and the first aspiration pump 8-1 are sequentially connected.It is provided with the heat traced pipeline 2 on the road First valve 3.
Second adsorption tube 1-9 is connected through heat traced pipeline 2 with the second deacidification device 5-2, and the second deacidification device 5-2, second remove Wet device 6-2, second flow metering device 7-2 and the second aspiration pump 8-2 are sequentially connected.It is provided with the heat traced pipeline 2 on the road Second valve 4.
In above-mentioned two-way flow measurement mechanism, identifier can be set to every adsorption tube, so as to follow-up analysis.Two The flue gas of pipeline is independently handled all the time, and two groups of gases do not intersect, and it is independent to ensure that each gas circuit has Gas mercury harvester and independent flow measurement device, it is ensured that both comparability, realize Parallel Sampling, as a result may be used Mutually to calibrate.Pipeline between deacidification device, dehydrating unit, flow measurement device and aspiration pump is using the poly- of acid corrosion-resistant Tetrafluoroethene material.Flue gas first passes through deacidification device, enters back into dehydrating unit, flow measurement device, this guarantees in flue gas Corrosive gas will not corrode pipeline and follow up device.
Flue gas analysis probe tube 1-10 is connected to flue gas analyzer 10 through heat traced pipeline 2, and the 3rd is provided with heat traced pipeline 2 Valve 11.Flue gas analyzer 10 can be used for analyzing the compositions such as sulfur dioxide in flue gas, oxygen, NO.Sampling flue gas is completed Mercury realizes the detections of other compositions in flue gas while sampling, it is ensured that obtained mercury, NO, sulfur dioxide, the content of oxygen It is same sampled point, improves the efficiency of sampling, reduce testing cost.
It is connected with compressed air line provided with blowback air entrance 13 on sampling gun pedestal 1-5, is provided with connecting line The opening and closing of 4th valve 12 control blowback air entrance 13.During normal pumping, the 4th valve 12 is closed, the first valve 3, the second valve 4th, the 3rd valve 11 is opened.When needing to carry out blowback cleaning to sampling gun 1, the first valve 3, the second valve 4, the 3rd valve are closed Door 11, opens the 4th valve 12, and compressed air enters sampling gun 1, sampling gun 1 is purged.
On sampling gun pedestal 1-5, the front and rear sides of the filter screen 1-7, temperature, pressure measurement apparatus 1-6 is respectively equipped with.
Thermocouple 1-3, first flow metering device 7-1, second flow metering device 7-2, flue gas analyzer 10, temperature pressure Force measuring device 1-6 is respectively connecting to computer 9, by computer 9 to flue temperature, flue gas flow, flue gas composition, filter screen 1-7 The data such as front and rear temperature, pressure carry out real-time display, record and processing.First aspiration pump 8-1, the second aspiration pump 8-2 distinguish Computer 9 is connected to, the automatic start-stop of aspiration pump is controlled by computer 9.First valve 3, the second valve 4, the 3rd valve 11, Four valves 12 are respectively connecting to computer 9, by the automatic shutter of the control valve of computer 9.So as to realize the long-range of sampling process Control.
Heat traced pipeline 2 described above includes the polyfluortetraethylene pipe of acid corrosion-resistant and can make heating-up temperature 0~180 DEG C adjustable resistance wire, resistance wire are wrapped in outside polyfluortetraethylene pipe.
The workflow of the present invention:
During normal work, sampling gun 1 is stretched into flue, by the remote control of computer 9, closes the 4th valve 12, the One valve 3, the second valve 4, the 3rd valve 11 are opened, and the first aspiration pump 8-1, the second aspiration pump 8-2 are opened.Flue gas is through over sampling Intracavitary of the hole 1-2 in sampling gun top 1-1 is sufficiently mixed, and because thief hole is distributed in the different depth in same section, flue gas mixes Conjunction can make the flue gas of taking-up more representative.Meanwhile in thermocouple 1-3 measurement flues correspondence position temperature, and by cigarette Channel temp data transfer is to computer 9.
Mixed flue gas filters out the particulate matters such as flue dust by filter screen 1-7, former and later two temperature, pressure measurement apparatus 1-6 Temperature, pressure before and after measurement filter screen 1-7, temperature, pressure data are transmitted to computer 9, to enter to the exhaust gas volumn of suction Row conversion.
Flue gas is divided into 3 strands after filter screen 1-7, wherein two stocks Jing Guo not the first adsorption tube 1-8 containing adsorbent, Two adsorption tube 1-9, the mercury in flue gas are adsorbed agent and absorbed, can be by the first adsorption tube 1-8, the second adsorption tube after end to be sampled 1-9, which takes away, analyzes mercury content therein, and the flue gas after adsorption tube enters deacidification device by heat traced pipeline 2, and flue gas passes through Deacidification device absorbs corrosive gas, then removes moisture through dehydrating unit, finally enters flow measurement device to measure flow, and The data on flows of the two-way is transmitted to computer 9.3rd strand of flue gas enters flue gas analyzer 10 through heat traced pipeline 2, analyzes cigarette Other compositions in gas, and by flue gas composition data transfer to computer 9.Heat traced pipeline 2 can ensure that flue gas is transmitted across herein It is not condensed in journey and produces excess moisture.
Whether the pressure differential that computer 9 calculates filter screen 1-7 front and rear sides is more than setting value, when the pressure differential exceeds setting value When, filter screen 1-7 is blocked by flue dust, and now computer 9 controls the first valve 3, the second valve 4, the 3rd valve 11 to close, pause stream The work of metering device and flue gas analyzer 10 is measured, opens the 4th valve 12, compressed air enters through the 4th valve 12 from blowback air Mouth 13 enters in sampling gun 1, realizes the cleaning to sampling gun 1, securing cleaning 5 minutes, can also be cleaned according to regulation and control are actually needed Time, be then shut off the 4th valve 12, open the first valve 3, the second valve 4, the 3rd valve 11, continue flow measurement device and The work of flue gas analyzer 10.

Claims (10)

  1. A kind of 1. Multifunctional tobacco bicycle pump automatic sampling system, it is characterised in that the system includes,
    Sampling gun, it is connected and composed by sampling gun top and sampling gun pedestal;The sampling gun top is cavity structure, and distal end is sealed Mouthful, and the side wall on sampling gun top is provided with 1 to multiple thief holes;The sampling gun pedestal is cavity structure, in sampling gun base Filter screen is provided with seat, and adsorption tube and flue gas analysis probe tube are provided with the outlet side of sampling gun pedestal;
    Flow measurement device, it is connected with adsorption tube, to measure flue gas flow;In the connection of flow measurement device and adsorption tube Pipeline is provided with valve;
    Aspiration pump, it is connected on the pipeline that collection gas mercury measures with flue gas flow;
    Flue gas analyzer, it is connected with flue gas analysis probe tube, to flue gas analysis;Sampled in flue gas analyzer and flue gas analysis The connecting line of pipe is provided with valve.
  2. 2. system according to claim 1, it is characterised in that the sampling gun top is detachable to multistage probe tube by 1 It is formed by connecting;Thief hole is provided with the probe tube.
  3. 3. system according to claim 1 or 2, it is characterised in that the inwall of the sampling gun is covered with zone of heating.
  4. 4. system according to claim 1 or 2, it is characterised in that be respectively equipped with thermocouple on each thief hole.
  5. 5. system according to claim 1, it is characterised in that two adsorption tubes are provided with sampling gun pedestal, it is each to inhale The corresponding flow measurement device of attached pipe.
  6. 6. system according to claim 1 or 5, it is characterised in that the adsorption tube is connected to deacidification dress through heat traced pipeline Put, deacidification device, dehydrating unit, flow measurement device, aspiration pump are sequentially connected.
  7. 7. system according to claim 1, it is characterised in that on sampling gun pedestal, the front and rear sides point of the filter screen She You not temperature, pressure measurement apparatus.
  8. 8. system according to claim 1, it is characterised in that the filter screen is the tubular structure of porous mesh sheet winding.
  9. 9. system according to claim 1, it is characterised in that it is empty with compression that blowback air entrance is provided with sampling gun pedestal Air pipe connects, by the opening and closing of Valve controlling blowback air entrance.
  10. 10. system according to claim 1, it is characterised in that also including computer, it is used for data real-time display, note Record, processing and process monitoring, and the start and stop of control aspiration pump and the opening and closing of valve.
CN201720475308.0U 2017-05-02 2017-05-02 A kind of Multifunctional tobacco bicycle pump automatic sampling system Active CN206818487U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107462532A (en) * 2017-08-02 2017-12-12 东南大学 A kind of method for carrying out gas mercury measurement of concetration using modified high sulfur petroleum coke
CN109556927A (en) * 2018-12-26 2019-04-02 南京理工大学 The sampler and method of mercury in a kind of high-temperature flue gas
CN111537293A (en) * 2020-05-13 2020-08-14 西安热工研究院有限公司 System and method for sampling and measuring HCl and/or HBr

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107462532A (en) * 2017-08-02 2017-12-12 东南大学 A kind of method for carrying out gas mercury measurement of concetration using modified high sulfur petroleum coke
CN109556927A (en) * 2018-12-26 2019-04-02 南京理工大学 The sampler and method of mercury in a kind of high-temperature flue gas
CN109556927B (en) * 2018-12-26 2024-05-17 南京理工大学 Sampling device and method for mercury in high-temperature flue gas
CN111537293A (en) * 2020-05-13 2020-08-14 西安热工研究院有限公司 System and method for sampling and measuring HCl and/or HBr

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