CN117109996B - Analysis sampling system of sulfur analysis ratio instrument - Google Patents

Analysis sampling system of sulfur analysis ratio instrument Download PDF

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Publication number
CN117109996B
CN117109996B CN202311385997.2A CN202311385997A CN117109996B CN 117109996 B CN117109996 B CN 117109996B CN 202311385997 A CN202311385997 A CN 202311385997A CN 117109996 B CN117109996 B CN 117109996B
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sampling
pipeline
analysis
pipe
module
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CN117109996A (en
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侯嘉伟
梁晓琳
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Chengdu Blue Lake Technology Co ltd
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Chengdu Blue Lake Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/24Suction devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/093Cleaning containers, e.g. tanks by the force of jets or sprays
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30Heating of pipes or pipe systems
    • F16L53/32Heating of pipes or pipe systems using hot fluids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2247Sampling from a flowing stream of gas
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44Sample treatment involving radiation, e.g. heat
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The application relates to a sulfur analysis ratio instrument analysis sampling system, including gyration storehouse, establish at the inside electronic revolving rack in gyration storehouse, establish a plurality of sample capsules of fixed position on electronic revolving rack around electronic revolving rack interval, first end and gyration storehouse fixed connection, the second end is to the sampling tube who keeps away from the direction extension of gyration storehouse, the input is connected with sampling tube, the output disposes the first sampling pump of being connected with sample capsule, the input disposes and is connected with sample capsule, the output disposes the second sampling pump of being connected with sulfur analysis ratio instrument, establish the washing module that disposes the washing sample capsule in gyration storehouse and establish temperature regulation module and regeneration module on gyration storehouse. The sulfur analysis ratio meter analysis sampling system disclosed by the application ensures the accuracy of sampling results through a continuous sampling and regenerating mode, further ensures the accuracy of subsequent analysis values and is used for providing accurate numerical references for subsequent processing procedures.

Description

Analysis sampling system of sulfur analysis ratio instrument
Technical Field
The application relates to the technical field of online detection equipment, in particular to an analysis sampling system of a sulfur analysis ratio instrument.
Background
In chemical production, hydrogen sulfide and sulfur dioxide in the tail gas can be reduced to elemental sulfur or produce products of economic value, such as sulfuric acid. The core is to measure the sulfur component ratio in the tail gas to determine the dosage of the subsequent treatment process so as to obtain better economy.
Taking the tail gas containing hydrogen sulfide and sulfur dioxide as an example, carrying out catalytic reaction on the mixed gas of the hydrogen sulfide and the sulfur dioxide under the action of a catalyst, condensing and gas-liquid separating the generated elemental sulfur, solidifying the elemental sulfur into a finished product, and sending the tail gas to a subsequent treatment device.
In the combustion process, the air quantity fed into the acid gas combustion furnace needs to be controlled, the ratio of the sulfur oxide to the sulfur dioxide in the tail gas is ensured to reach 2:1, the sulfur recovery rate of the device is highest, the emission concentration of the waste gas is lowest, and the environmental pollution is minimum. When any one of the two gases is excessive, the excessive gases can not participate in the reaction, so that the content of hydrogen sulfide and sulfur dioxide in the tail gas is greatly increased, and the core of the whole control process is to realize the optimal control of the sulfur ratio through the control and continuous correction of the ratio of the acid gas to the air.
The control process needs to be dynamically corrected according to the detection result, and the currently commonly used measurement mode is ultraviolet fluorescence measurement, and the specific principle is as follows: when the sample is introduced into the high-temperature cracking Jie Luhou, sulfur in the sample is quantitatively converted into sulfur dioxide through oxidative cracking, and the reaction gas enters a fluorescence chamber after being dried and dehydrated.
In the fluorescent chamber, part of sulfur dioxide is converted into sulfur dioxide (sulfur dioxide) in an excited state after being irradiated by ultraviolet light, photons are emitted when the sulfur dioxide transitions to a ground state, and photoelectron signals are received and amplified by a photomultiplier.
Currently, for sampling in the production process, manual sampling is mainly adopted, and certain hysteresis exists in the sampling mode, namely the detection result is the detection result of the previous sampling, but not the current detection result. Or by sampling through a pipe, the pipe sampling is improved in timeliness, but sulfides adhere to the inner wall of the pipe, and have a differential effect on the detection result, and the effect is not controllable, for example, sulfide tends to be coagulated at low temperature and dissolved at high temperature.
Disclosure of Invention
The application provides an analysis sampling system of a sulfur analysis ratio instrument, which ensures the accuracy of sampling results through a continuous sampling and regenerating mode, further ensures the accuracy of subsequent analysis values and is used for providing accurate numerical references for subsequent processing procedures.
The above object of the present application is achieved by the following technical solutions:
the application provides a sulfur analysis ratio appearance analysis sampling system, include:
a rotary bin;
the electric rotating frame is arranged in the rotating bin;
a plurality of sample capsules arranged at intervals around the electric rotating frame at fixed positions on the electric rotating frame;
the first end of the sampling pipeline is fixedly connected with the rotary bin, and the second end of the sampling pipeline extends in a direction away from the rotary bin;
the input end of the first sampling pump is connected with the sampling pipeline, and the output end of the first sampling pump is configured to be connected with the sample capsule;
the input end of the second sampling pump is configured to be connected with the sample capsule, and the output end of the second sampling pump is connected with the sulfur analysis ratio instrument;
the flushing module is arranged in the rotary bin and is configured to clean the sample capsules;
the temperature regulation module and the regeneration module are arranged on the rotary bin, the temperature regulation module is configured to be matched with the sampling pipeline for sampling and regeneration, and the regeneration module is configured to regenerate the sampling pipeline.
In one possible implementation of the present application, the sampling pipe includes:
the protection pipeline is arranged on the rotary bin;
the sub-sampling pipeline is arranged on the rotary bin and positioned in the protection pipeline, a gap exists between the sub-sampling pipeline and the protection pipeline, and sampling holes are uniformly distributed on the sub-sampling pipeline;
the temperature adjusting pipeline is arranged on the sub-sampling pipeline, a part of the temperature adjusting pipeline is positioned in the sub-sampling pipeline, and a gap exists between the part of the temperature adjusting pipeline positioned in the sub-sampling pipeline and the sub-sampling pipeline;
the first sampling pump and the regeneration module are connected with the sub-sampling pipeline;
the temperature adjusting pipeline is connected with the temperature adjusting module.
In one possible implementation of the present application, the sampling aperture is proximate one side of the swing bin.
In one possible implementation of the present application, a pressure relief channel is provided on the protection pipe on the side close to the swing bin.
In one possible implementation of the present application, the sample capsule comprises:
the hollow capsule body is detachably fixed on the electric rotating frame;
the two flexible connecting pipelines are respectively arranged at two ends of the hollow capsule body, one end of each flexible connecting pipeline is communicated with the hollow capsule body, and the other end of each flexible connecting pipeline is a free end;
the rigid wire is arranged in the flexible connecting pipeline, and the length of the rigid wire is smaller than that of the flexible connecting pipeline;
the magnet is arranged at the free end of the flexible connecting pipeline;
the output end of the first sampling pump and the connecting end of the flushing module are both provided with electromagnets.
In one possible implementation manner of the present application, the device further includes an exhaust pipe matched with the first sampling pump, and an electromagnet is arranged on one end of the exhaust pipe connected with the sample capsule.
In one possible implementation of the present application, the temperature adjustment module includes;
a liquid chamber;
the two connecting ends of the switching valve are respectively connected with the liquid chamber and the pipeline in the temperature regulating pipeline;
the loop pipeline is respectively connected with the liquid chamber and the pipeline in the temperature adjusting pipeline;
the micro heater is arranged on the liquid chamber.
In one possible implementation of the present application, the working portion of the micro-heater is located inside the liquid chamber.
In one possible implementation of the present application, the flushing module includes:
a compressed air source;
the two electromagnetic reversing valves are connected with a compressed air source;
the first end of the connecting pipeline is connected with the electromagnetic reversing valve, and the second end of the connecting pipeline is provided with an electromagnet;
wherein, two connecting pipes are used for connecting the both ends of sample capsule respectively.
In one possible implementation of the present application, the regeneration module includes a water tank, a micro air pump, a gas-liquid driven pump, and a purge valve;
the three connecting ends of the gas-liquid driving pump are respectively connected with the water tank, the miniature air pump and the cleaning valve;
the cleaning valve is also connected with the sampling pipeline.
Drawings
FIG. 1 is a schematic view of the analysis sample of a sulfur analysis ratio meter according to the present application.
Fig. 2 is a schematic illustration of the operation of a first sampling pump provided herein.
Fig. 3 is a schematic illustration of the operation of a secondary sampling pump provided herein.
Fig. 4 is a schematic diagram showing the distribution of a sample capsule on an electric turret.
Fig. 5 is a schematic structural diagram of a temperature adjustment module provided in the present application.
Fig. 6 is a schematic flow diagram of a gas in a sampling pipe provided herein.
Fig. 7 is a schematic structural view of a sample capsule provided herein.
Fig. 8 is a schematic structural view of a dual valve channel set on a sample capsule provided herein.
Fig. 9 is a schematic structural view of a flushing module provided in the present application.
Fig. 10 is a schematic diagram of a gas flow direction of a rinse module provided in the present application during operation.
FIG. 11 is a schematic diagram of the flow of gas during operation of another rinse module provided herein.
Fig. 12 is a schematic structural diagram of a regeneration module provided in the present application.
In the figure, 2, a sample capsule, 4, a flushing module, 5, a temperature regulation module, 6, a regeneration module, 11, a rotary bin, 12, an electric rotary frame, 21, a hollow capsule body, 22, a flexible connecting pipeline, 23, a rigid wire, 24, a magnet, 31, a sampling pipeline, 32, a first sampling pump, 33, a second sampling pump, 34, an exhaust pipeline, 41, a compressed air source, 42, an electromagnetic directional valve, 43, a connecting pipeline, 51, a liquid chamber, 52, a driving pump, 53, a loop pipeline, 54, a micro-heater, 61, a water tank, 62, a micro-air pump, 63, a gas-liquid driving pump, 64, a cleaning valve, 311, a protection pipeline, 313, a sub-sampling pipeline, 314, a sampling hole, 315, a temperature regulation pipeline, 316 and a pressure release channel.
Detailed Description
The technical solutions in the present application are described in further detail below with reference to the accompanying drawings.
The application discloses a sulfur analysis ratio appearance analysis sampling system (appearance reference fig. 1), be applied to the leading analysis sample of sulfur analysis ratio appearance, can directly install on the tail gas pipeline, directly take a sample in the follow tail gas pipeline. And sending the obtained sample into a sulfur analysis ratio meter for analysis, and obtaining specific parameters of the tail gas in the tail gas pipeline in the shortest time.
In some examples, the sulfur analysis ratiometer analysis sampling system disclosed herein includes a rotary bin 11, an electric turret 12, a sampling pipe 31, a first sampling pump 32, a second sampling pump 33, a sample capsule 2, a flushing module 4, a temperature adjustment module 5, and a regeneration module 6, wherein the rotary bin 11 has a cavity, and the electric turret 12 is located inside the rotary bin 11, that is, in the cavity inside the rotary bin 11, as shown in fig. 2.
The electric turret 12 has a plurality of fixed locations, each of which has a sample capsule 2 fixed thereto, the sample capsules 2 being uniformly arranged about the axis of the electric turret 12. Each time the electric rotating frame 12 rotates, the sample capsule 2 can be driven to rotate by a fixed angle.
The first end of the sampling pipe 31 is fixedly connected with the rotary bin 11, and the second end extends in a direction away from the rotary bin 11 and is used for extending into the tail gas pipe to sample gas in the tail gas pipe. The input of the first sampling pump 32 is connected to the sampling pipe 31 and the output is configured to be connected to the sample capsule 2, which serves to feed the sample in the sampling pipe 31 into the sample capsule 2.
Referring to fig. 3, the input end of the second sampling pump 33 is configured to be connected to the sample capsule 2, and the output end is connected to the sulfur analysis ratio meter, so as to send the sample in the sample capsule 2 into the sulfur analysis ratio meter for analysis.
It will be appreciated that the number of sample capsules 2 is plural and that each complete sampling process requires the use of one sample capsule 2 as shown in figure 4. Each time the sample capsule 2 is used, a regeneration is required, which is completed by the flushing module 4. The flushing module 4 flushes the inner wall of the sample capsule 2 to remove the residue on the inner wall of the sample capsule 2, so as to avoid interference to the sample obtained in the next sampling process.
The temperature regulation module 5 and the regeneration module 6 are also installed on the rotary bin 11, the temperature regulation module 5 is used for matching the sampling pipeline 31 for sampling, the regeneration module 6 is used for regenerating the sampling pipeline 31, and the concrete description is as follows regarding the matching of the sampling pipeline 31 for sampling and the regeneration of the sampling pipeline 31:
the sampling pipeline 31 needs to keep temperature in the sampling process, so that the inaccuracy of the detection result caused by the fact that moisture in the tail gas is condensed inside the sampling pipeline 31 is avoided, for example, sulfur dioxide is easy to dissolve in water, if condensed water is generated inside the sampling pipeline 31, a part of sulfur dioxide is dissolved in the condensed water, the part of sulfur dioxide can be converted into sulfuric acid, and the numerical value of the detection result is lower than the practical numerical value. At the same time, a small amount of hydrogen sulfide gas is dissolved in the condensed water generated inside the sampling pipe 31, and the accuracy of the detection result is also affected.
Therefore, during the sampling process, the temperature of the sampling pipe 31 needs to be raised by means of the temperature adjusting module 5, which is equal to or slightly higher than the temperature in the exhaust pipe. After the sampling is completed, the regeneration module 6 is started, and cleaning of the inside of the sampling pipe 31 is started.
In some possible implementations, the regeneration module 6 is activated at intervals of one hour to two hours.
The temperature adjustment module 5 participates in the regeneration of the sampling pipe 31, specifically, as follows, the regeneration module 6 will use water to flush the inside of the sampling pipe 31, but it should be understood that the flushing cannot completely remove the attachment of the sampling pipe 31, and at this time, the removal needs to be performed by means of high-temperature steaming and high-temperature steam.
The high-temperature steam is generated in such a way that the temperature adjusting module 5 heats the sampling pipeline 31, and the sampling pipeline 31 exchanges heat with water inside after being heated, so that the high-temperature steam is generated inside the sampling pipeline 31. The way in which the high temperature cooking is produced is to suitably reduce the temperature of the sampling pipe 31.
The high-temperature steam can peel off the adhesion inside the sampling pipe 31 by the bubbles generated in the boiling state of the water, and the high-temperature steam is used for peeling off the adhesion which cannot be peeled off. The temperature of the inside of the sampling pipe 31 heated by the high-temperature steam is increased, so that the residual moisture in the sampling pipe 31 can be evaporated, and the process can be completed by the temperature rising process of the temperature adjusting module 5.
In some examples, referring to fig. 5, the sampling pipe 31 includes a protection pipe 311, a sub-sampling pipe 313, and a temperature adjustment pipe 315, where the protection pipe 311, the sub-sampling pipe 313, and the temperature adjustment pipe 315 are sequentially disposed from inside to outside, a gap exists between the protection pipe 311 and the sub-sampling pipe 313, and a gap exists between the sub-sampling pipe 313 and the temperature adjustment pipe 315.
The protection pipe 311 and the sub-sampling pipe 313 are fixedly installed on the rotary bin 11, and the temperature adjusting pipe 315 is fixedly installed on the sub-sampling pipe 313.
Referring to fig. 5, a temperature adjusting pipe 315 is connected to the temperature adjusting module 5. In some examples, the temperature regulation module 5 includes a liquid chamber 51, a driving pump 52, a loop pipe 53 and a micro-heater 54, and two connection ends of the driving pump 52 are respectively connected with the liquid chamber 51 and the pipe in the temperature regulation pipe 315; likewise, the return line 53 connects the lines in the liquid chamber 51 and the temperature regulating line 315, respectively.
The above-described manner may constitute a circuit in which the medium in the liquid chamber 51 circulates between the liquid chamber 51 and the piping in the temperature regulating pipe 315. The micro-heater 54 serves to heat the heat transfer medium in the liquid chamber 51.
In some possible implementations, the heat transfer medium uses a thermally conductive oil.
In some possible implementations, the micro-heater 54 uses an electrical heater bar.
In some possible implementations, the working part of the micro-heater 54 is located inside the liquid chamber 51, for example using heating pipes, the purpose of which is to achieve a higher heat exchange rate.
Of course, the temperature adjusting module 5 may also directly adopt an electric heating mode, and at this time, the temperature adjusting module 5 uses electric power as a power source, and the temperature adjusting pipeline 315 is essentially converted into a resistor to convert electric energy into heat energy.
As can be seen from the above description, the sub-sampling pipe 313 is located between the temperature adjusting pipe 315 and the protecting pipe 311, and the protecting pipe 311 functions to provide a relatively closed working environment for the sub-sampling pipe 313, and the temperature adjusting pipe 315 functions to adjust the working temperature of the sub-sampling pipe 313.
Sampling holes 314 are uniformly distributed on the sub-sampling pipe 313, so that the tail gas in the tail gas pipe can flow into the sub-sampling pipe 313 through the sampling holes 314. The first sampling pump 32 and the regeneration module 6 are connected to a sub-sampling pipe 313, and the first sampling pump 32 is used for sending the tail gas in the sub-sampling pipe 313 into the sample capsule 2.
In some possible implementations, referring to fig. 6, the sampling hole 314 is near the side of the swing bin 11, or may be described as facing away from the exhaust flow direction in the protection conduit 311, primarily to avoid the need for the speed of the first sampling pump 32 to be adjusted to coincide with the exhaust flow rate in the protection conduit 311.
It will be appreciated that when the flow rate of the exhaust gas in the protection pipe 311 is relatively fast, this will result in an increase in the gas pressure in the sub-sampling pipe 313 and thus in an increase in the concentration of the gas packets in the sub-sampling pipe 313, which will directly lead to a deviation of the detection result from the actual result. This tendency can be significantly alleviated when the sampling aperture 314 is designed to be facing away from the sample.
Further, a pressure release channel 316 is disposed on the side of the protection pipe 311 near the rotary bin 11, and the pressure release channel 316 is used for balancing the air pressure inside and outside the protection pipe 311. The air pressure inside and outside the sub-sampling pipe 313 can be kept substantially uniform at this time.
In some examples, referring to fig. 7 and 8, the sample capsule 2 includes a hollow capsule body 21, a flexible connection pipe 22, a rigid wire 23 and a magnet 24, where the hollow capsule body 21 is detachably fixed on the electric rotating frame 12, so as to enable detachable replacement, and the detachable fixing manner may be selected to be clamped or inserted.
Two ends of the hollow capsule body 21 are respectively provided with a flexible connecting pipeline 22, one end of the flexible connecting pipeline 22 is communicated with the hollow capsule body 21, and the other end is a free end. The flexible connection pipe 22 is internally fixed with a rigid wire 23, and the length of the rigid wire 23 is smaller than that of the flexible connection pipe 22, that is, the flexible connection pipe 22 can be divided into a length-constant part and a length-variable part.
A magnet 24 is fixed on the free end of the flexible connection pipe 22, and the magnet 24 is used to match with an electromagnet existing at the output end of the first sampling pump 32 and the connection end of the flushing module 4, so as to realize controllable separation and connection. Specifically, when the electromagnet is electrified, the magnet 24 will be attracted to the electromagnet, and when the electromagnet is de-electrified, the magnet 24 will be out of contact with the electromagnet.
The purpose of this design is to achieve that the sample capsule 2 can be quickly connected with the output end of the first sampling pump 32 and the connection end of the flushing module 4 when rotating to the designated position, and can be separated from contact with the output end of the first sampling pump 32 and the connection end of the flushing module 4 after the corresponding content is completed.
In order to achieve tightness of the sample in the sample capsule 2, a double valve channel group is arranged on the flexible connecting pipeline 22, wherein the double valve channel group comprises two channels, and a one-way valve is arranged on each channel, and the two one-way valves are opposite in direction, as shown in fig. 8.
Further, referring to fig. 2, an exhaust pipe 34 matching with the first sampling pump 32 is further added, and an electromagnet is disposed on an end of the exhaust pipe 34 connected with the sample capsule 2. The exhaust pipe 34 is used for exhausting air in the sample capsule 2 so as to ensure the accuracy of the detection result.
It will be appreciated that after the sample capsule 2 is again rinsed, air is present inside, which air may cause a decrease in the concentration of the exhaust gas, thereby making the detection result smaller than the actual result. In the present application, this air is thus guided out of the sample capsule 2 using the air outlet duct 34, the guided air being returned again into the exhaust duct via the air outlet duct 34.
Since it is assumed for the sample capsule 2 that the exhaust time of the air in the sample capsule 2 is five seconds, it is necessary in the present application that the first sampling pump 32 is turned on for ten seconds to keep the exhaust gas in the sample capsule 2 as uniform as possible with the exhaust gas in the exhaust gas pipe. Thus, the tail gas can be used for flushing the inside of the sample capsule 2, and the flushed tail gas is returned to the tail gas pipeline again through the exhaust pipeline 34, so that the environment is not polluted.
In some examples, referring to fig. 9, the flushing module 4 includes a compressed air source 41, electromagnetic directional valves 42 and a connecting pipe 43, where the number of electromagnetic directional valves 42 is two, the two electromagnetic directional valves 42 are connected to the compressed air source 41, and a first end of the connecting pipe 43 is connected to the electromagnetic directional valve 42, and a second end is provided with an electromagnet.
The number of the connecting pipes 43 is also two, and the two connecting pipes 43 are respectively used for connecting the two flexible connecting pipes 22 on the hollow capsule body 21 and are used for two-way flushing the inside of the hollow capsule body 21, and the purpose of the two-way flushing is to improve the flushing cleanliness.
Because a dead zone may occur at the junction of the flexible connection pipe 22 and the hollow capsule body 21 after the compressed air flows into the hollow capsule body 21, it is necessary to remove the residual exhaust gas in the dead zone by means of flushing.
The electromagnetic directional valve 42 functions to switch the flow direction of the purge gas as shown in fig. 10 and 11.
In some possible implementations, the connecting duct 43 is also connected to the exhaust duct, into which the air after flushing is fed, avoiding secondary pollution.
In one possible implementation of the present application, referring to fig. 12, the regeneration module 6 includes a water tank 61, a micro air pump 62, a gas-liquid driven pump 63, and a purge valve 64, and three connection ends of the gas-liquid driven pump 63 are connected to the water tank 61, the micro air pump 62, and the purge valve 64, respectively.
The purge valve 64 is also connected to the sampling pipe 31 to supply compressed gas and purge water to the sampling pipe 31.
In some possible implementations, the gas-liquid driven pump 63 uses a peristaltic pump.
As can be seen from the above description, the first sampling pump 32, the second sampling pump 33, the flushing module 4 and the regeneration module 6 are uniformly arranged around the axis of the rotary bin 11, and in the above figures, for clarity of illustration, one drawing is used to show one part (the first sampling pump 32, the second sampling pump 33, the flushing module 4 and the regeneration module 6) and the related expression thereof.
The rotary bin 11 is used to isolate the first sampling pump 32, the second sampling pump 33, the flushing module 4 and the regeneration module 6 from the sample capsule 2 in a double-layer structure.
Of course, the implementation of the above process also needs to rely on a controller to realize the on-off of the circuit and the motor control, such as a singlechip or a programmable logic controller, and the content of the part belongs to the prior art, and is not repeated here.
From the above description, a complete sampling process of the present application includes:
purging the inside of the sample capsule 2 by using tail gas in a tail gas pipeline;
obtaining quantitative tail gas by using the sample capsule 2;
delivering the tail gas into a sulfur analysis ratio instrument for high-temperature pyrolysis and ultraviolet irradiation quantitative analysis;
carrying out bidirectional purging regeneration on the sample capsule 2;
after a sampling process of a fixed number of times or after a fixed time interval, the sampling pipe 31 is subjected to high-temperature steam cooking and high-temperature steam regeneration, and then the inside of the sampling pipe 31 is dried.
The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. A sulfur analysis ratiometer analysis sampling system, comprising:
a rotary bin (11);
an electric rotating frame (12) arranged in the rotary bin (11);
a plurality of sample capsules (2) arranged around the electric rotating frame (12) at intervals at fixed positions on the electric rotating frame (12);
the first end of the sampling pipeline (31) is fixedly connected with the rotary bin (11), and the second end of the sampling pipeline extends in a direction away from the rotary bin (11);
a first sampling pump (32), the input end of which is connected with the sampling pipeline (31), and the output end of which is configured to be connected with the sample capsule (2);
the input end of the second sampling pump (33) is configured to be connected with the sample capsule (2), and the output end of the second sampling pump is connected with the sulfur analysis ratio instrument;
the flushing module (4) is arranged in the rotary bin (11), and the flushing module (4) is configured to clean the sample capsules (2);
the temperature adjusting module (5) and the regeneration module (6) are arranged on the rotary bin (11), the temperature adjusting module (5) is configured to be matched with the sampling pipeline (31) for sampling and regeneration, and the regeneration module (6) is configured to regenerate the sampling pipeline (31);
the sampling pipe (31) comprises:
a protection pipeline (311) arranged on the rotary bin (11);
the sub-sampling pipeline (313) is arranged on the rotary bin (11) and positioned in the protection pipeline (311), a gap exists between the sub-sampling pipeline (313) and the protection pipeline (311), and sampling holes (314) are uniformly distributed on the sub-sampling pipeline (313);
a temperature adjustment pipe (315) provided on the sub-sampling pipe (313) and having a part located in the sub-sampling pipe (313), wherein a gap exists between the part of the temperature adjustment pipe (315) located in the sub-sampling pipe (313) and the sub-sampling pipe (313);
wherein the first sampling pump (32) and the regeneration module (6) are connected with a sub-sampling pipeline (313);
the temperature adjusting pipeline (315) is connected with the temperature adjusting module (5).
2. The sulfur analysis ratiometer analysis sampling system of claim 1, wherein the sampling aperture (314) is adjacent to one side of the rotating bin (11).
3. The sulfur analysis ratio analyzer analysis sampling system according to claim 2, wherein a pressure release channel (316) is arranged on one side of the protection pipeline (311) close to the rotary bin (11).
4. A sulphur analysis ratiometric meter analysis sampling system according to any one of claims 1 to 3, wherein the sample capsule (2) comprises:
the hollow capsule body (21) is detachably fixed on the electric rotating frame (12);
two flexible connecting pipelines (22) are respectively arranged at two ends of the hollow capsule body (21), one end of each flexible connecting pipeline (22) is communicated with the hollow capsule body (21), and the other end of each flexible connecting pipeline is a free end;
the rigid wire (23) is arranged in the flexible connecting pipeline (22), and the length of the rigid wire (23) is smaller than that of the flexible connecting pipeline (22);
a magnet (24) provided on the free end of the flexible connection pipe (22);
the output end of the first sampling pump (32) and the connecting end of the flushing module (4) are both provided with electromagnets.
5. The sulfur analysis ratiometer analysis sampling system of claim 4, further comprising an exhaust pipe (34) matching the first sampling pump (32), wherein an electromagnet is provided on an end of the exhaust pipe (34) connected to the sample capsule (2).
6. The sulfur analysis ratiometer analysis sampling system of claim 1, wherein the temperature adjustment module (5) comprises;
a liquid chamber (51);
the driving pump (52) is connected with the liquid chamber (51) and the pipeline in the temperature regulating pipeline (315) at two connecting ends respectively;
a loop pipe (53) which is connected with the liquid chamber (51) and the pipeline in the temperature adjusting pipe (315);
and a micro heater (54) provided in the liquid chamber (51).
7. The sulfur analysis ratiometer analysis sampling system of claim 6, wherein the working portion of the micro-heater (54) is located inside the liquid chamber (51).
8. The sulfur analysis ratiometer analysis sampling system of claim 1, wherein the flushing module (4) comprises:
a compressed air source (41);
the two electromagnetic directional valves (42) are connected with a compressed air source (41);
a connecting pipeline (43), wherein the first end is connected with the electromagnetic reversing valve (42), and the second end is provided with an electromagnet;
wherein, two connecting pipes (43) are respectively used for connecting two ends of the sample capsule (2).
9. The sulfur analysis ratio analyzer analysis sampling system according to claim 1, wherein the regeneration module (6) comprises a water tank (61), a micro air pump (62), a gas-liquid driven pump (63) and a cleaning valve (64);
three connecting ends of the gas-liquid driving pump (63) are respectively connected with the water tank (61), the miniature air pump (62) and the cleaning valve (64);
the purge valve (64) is also connected to the sampling line (31).
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