CN117309510A - VOC pollution source remote sampling system - Google Patents

VOC pollution source remote sampling system Download PDF

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Publication number
CN117309510A
CN117309510A CN202311596441.8A CN202311596441A CN117309510A CN 117309510 A CN117309510 A CN 117309510A CN 202311596441 A CN202311596441 A CN 202311596441A CN 117309510 A CN117309510 A CN 117309510A
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CN
China
Prior art keywords
sampling
gas
gas pipe
branch
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311596441.8A
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Chinese (zh)
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CN117309510B (en
Inventor
阳奇
彭雨林
王雷
吕云雷
胡珊鸣
黄承洋
吕顺祯
可贵秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Bositek Quality Technology Testing Co ltd
Inney Instruments Beijing Co ltd
Beijing Bct Technology Ltd
Original Assignee
Beijing Bositek Quality Technology Testing Co ltd
Inney Instruments Beijing Co ltd
Beijing Bct Technology Ltd
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Priority to CN202311596441.8A priority Critical patent/CN117309510B/en
Publication of CN117309510A publication Critical patent/CN117309510A/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0142—Two or more vessels characterised by the presence of fluid connection between vessels bundled in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/034—Control means using wireless transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/036—Control means using alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F17C2250/075—Action when predefined value is reached when full
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/038—Detecting leaked fluid
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Computing Systems (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention provides a VOC pollution source remote sampling system, which utilizes three paths to realize the introduction, collection and cleaning of sampling gas by remote switching connection, wherein the sampling gas is introduced into a first path to empty the sampling gas, the sampling gas introduced into a third path is ensured not to be mixed with original environmental gas, the back-blowing environmental gas of a second path provides a clean environment for the next gas collection, and certainly, the pen is buried for the first path to reintroduce the sampling gas to empty the sampling gas in the next gas collection process. The three branches are converged at the same public connection point A and share the same air delivery pipe, so that the collection of sampling and cleaning functions is realized, the three branches can be integrated in the same control box, the miniaturization and the high efficiency of operation of the system are realized, and the defects in the prior art are effectively overcome.

Description

VOC pollution source remote sampling system
Technical Field
The invention relates to a remote sampling system for VOC pollution sources.
Background
VOCs are short for volatile organic compounds (volatile organic compounds). Once the VOC is emitted into the air in a large quantity, the VOC has great negative effect on human health.
VOCs are prevalent in a variety of industries, for example, tobacco, textile, toy, house hold, automotive, electronics and electrical, etc. industries can produce large amounts of VOCs, causing potentially serious pollution of the ambient atmosphere. In this regard, a great deal of regulations are imposed on the national output, and the emission of VOC gas generated in various industrial factories is strictly limited.
Therefore, in order to strictly enforce national regulations on VOC emissions, it is necessary to build a set of efficient VOC pollution source sampling systems. However, the existing sampling method for the VOC pollution source is often very clumsy, and a technician is required to carry the sampling device which is cleaned in advance to a preset sampling place, dock the sampling device with the potential pollution source, then perform complex operation to realize VOC sampling, and carry the heavy sampling device to return to the premises after the sampling is completed, so that analysis of the VOC content in the premises and cleaning of the sampling device are completed.
The existing VOC pollution source sampling mode needs to consume a large amount of manpower and material resources, and has extremely poor efficiency. Therefore, a set of efficient VOC pollution source sampling system is urgently needed, the sampling efficiency is improved, and the integration of sampling and cleaning can be realized.
Disclosure of Invention
The invention provides a remote sampling system for VOC pollution sources, which effectively solves the defects existing in the prior art.
The invention provides a VOC pollution source remote sampling system, which comprises a remote control center, a gas pipe and a control box, wherein one end of the gas pipe is connected with a VOC pollution source, the other end of the gas pipe is connected with the control box, the gas pipe is used for communicating the VOC pollution source with the control box, the gas pipe extends into the control box from the VOC pollution source and is divided into three groups of branch paths at a public connection point in the control box, the first branch path is led to a sampling pump through a sampling one-way valve, the second branch path is led to a blowback pump through a blowback one-way valve, the third branch path is divided into one or more branch paths, each branch path is led to a sampling bottle through a switch valve, wherein the sampling one-way valve is in a normally closed state when the sampling pump is shut down, and the blowback one-way valve is in a normally closed state when the blowback pump is shut down; firstly, a remote control center sends a starting instruction to a sampling pump to remotely start the sampling pump, and a sampling one-way valve which is originally in a normally closed state is opened, so that the sampling pump is communicated with a VOC pollution source along a first branch path through a gas pipe, and therefore, the sampling pump pumps sampling gas from the VOC pollution source pump, the sampling gas flows to the first branch path along the gas pipe, and then the original environmental gas in the gas pipe is completely driven away from the first branch path; then, the remote control center sends an instruction to the sampling pump to stop the sampling pump, and the sampling one-way valve is restored to a normally closed state, so that the first branch is disconnected; then, the remote control center sends a command to open the switching valve, so that the third branch is communicated with the gas pipe, and the sampling gas from the VOC pollution source is conveyed to the sampling bottle through the gas pipe via the third branch; after the sampling bottle is filled with the sampling gas, the remote control center sends an instruction to close the switch valve, so that the third branch is closed, the sampling gas is still remained in the gas pipe at the moment, then, the remote control center sends an instruction to the back-flushing pump, so that the back-flushing pump is started, the back-flushing check valve which is originally in a normally closed state on the second branch is opened, the second branch is unblocked, the back-flushing pump is communicated with the gas pipe through the second branch, the back-flushing pump pumps the environmental gas from the outside into the gas pipe through the second branch, the gas flow formed by the environmental gas blows the sampling gas remained in the gas pipe away from the gas pipe, the gas pipe is filled with the environmental gas at the moment, then, the remote control center sends an instruction to stop the back-flushing pump, and along with the stop of the back-flushing pump, the back-flushing check valve is restored to the normally closed state at the moment, the second branch is also closed.
Preferably, a dust filter screen is arranged at one end of the gas pipe close to the VOC pollution source, so that when the VOC pollution source discharges sampling gas to the control box along the gas pipe, the dust filter screen firstly filters dust in the sampling gas to prevent the dust from entering the control box
Preferably, a rigid sampling wand is provided along the periphery of the air delivery tube on the side of the air delivery tube adjacent the VOC pollution source, whereby the sampling wand is secured to the VOC pollution source when the air delivery tube is connected to the VOC pollution source.
Preferably, the heat tracing pipeline is arranged to extend along with the gas pipe, so that the gas in the gas pipe is heated in the whole course along the extending path of the gas pipe, and the gas in the gas pipe is prevented from being condensed in the gas pipe due to water vapor contained in the gas in the environment of low temperature.
Optionally, the remote control center is a computer room or a cloud server, and the computer room or the cloud server is in remote communication with the control box and sends remote instructions to realize switching control among three branches.
Optionally, the APP application is loaded on a mobile phone or a tablet computer to realize the control function of the remote control center.
Preferably, a pressure sensor is additionally arranged on the interface end of the sampling bottle, the pressure sensor is in real-time communication with the control cabinet and the remote control center, once the pressure sensor senses that the air pressure in the sampling bottle reaches the target pressure in the process of conveying sampling gas to the sampling bottle by the VOC pollution source, the pressure sensor sends a sampling full signal to the control center, and therefore the remote control center remotely sends an instruction to close the switch valve and automatically records a sampling log.
More preferably, the remote control center and the control cabinet are connected with other monitoring instruments through a network or an electrical connection mode, so that remote unmanned automatic cleaning, real-time monitoring and triggering sampling are realized. And the pressure sensor monitors the state in the sampling bottle at any time, and once the gas leakage of the sampling bottle is found before sampling, the sampling bottle sends an alarm signal to the remote control center, and the remote control center automatically selects other channels for sampling based on the alarm signal and timely informs operation and maintenance personnel to maintain the channels.
In summary, the invention provides a remote sampling system for VOC pollution sources, which utilizes three sets of branches to remotely switch and connect, and realizes the introduction, collection and cleaning of sampling gas, wherein the first branch introduces sampling gas to exhaust the environmental gas, so that the sampling gas introduced by the third branch is ensured not to be mixed with original environmental gas, and the second branch back-blowing environmental gas provides a clean environment for the next gas collection, and certainly, the first branch again introduces the sampling gas to exhaust the environmental gas to embed a pen in the next gas collection process. The three branches are collected at the same public connection point A and share the same gas pipe, so that collection of sampling and cleaning functions is realized, the three branches can be integrated in the same control box, miniaturization and high operation efficiency of the system are realized, the whole process only needs to be controlled and switched by a remote control center, investment of manpower and material resources is reduced to the greatest extent, under the operation of the remote control center, technicians only need to operate and install sampling bottles and take away the sampling bottles on site, and for people, the operation is extremely simple, and therefore a plurality of defects existing in the prior art are effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present invention, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a gas circuit block diagram of a remote sampling system for VOC pollution sources in accordance with the present invention;
FIG. 2A is a schematic diagram of a computer room in which the control functions of a remote control center may be implemented;
fig. 2B shows a mobile phone APP application interface loaded on a mobile phone that can implement the control function of the remote control center.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present invention. All other embodiments, which can be made by a person of ordinary skill in the art without the need for inventive faculty, are within the scope of the invention, based on the embodiments described in the present invention.
The invention provides a remote sampling system for VOC pollution sources, which can efficiently and remotely process VOC pollution source sampling and realize the sampling and cleaning integrated operation of the sampling system. By using the remote sampling system for the VOC pollution source, technicians do not need to rush to a sampling place with heavy sampling equipment, and the VOC sampling can be realized remotely. Hereinafter, the remote sampling system for VOC pollution sources provided by the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a gas circuit structure diagram of a remote sampling system for VOC pollution sources according to the present invention. As shown in fig. 1, in the remote sampling system for VOC pollution sources, a gas pipe 101 is connected to the VOC pollution source (e.g., chimney in a factory) at one end and to a control box 102 at the other end, whereby the gas pipe 101 connects the VOC pollution source to the control box 102 in gas communication.
Preferably, a dust filter screen 103 is provided at an end of the gas pipe 101 near the VOC pollution source, whereby when the VOC pollution source discharges the sampling gas along the gas pipe 101 to the control box 102, the dust filter screen 103 will first filter dust in the sampling gas to avoid the dust from entering the control box 102.
It is also preferred that a rigid sampling wand 104 is provided along the periphery of the air delivery tube 101 on the side of the air delivery tube 101 adjacent to the VOC pollution source, whereby upon connection of the air delivery tube 101 to the VOC pollution source, the sampling wand 104 is first secured to the VOC pollution source, thereby facilitating the connection between the air delivery tube 101 and the VOC pollution source.
It is also preferable that, as shown in fig. 1, the heat tracing line 105 is provided to extend concomitantly with the gas pipe 101, thereby heating the gas in the gas pipe 101 all the way along the path along which the gas pipe 101 extends, thereby avoiding condensation of the gas in the gas pipe 101 inside the gas pipe 101 due to moisture contained in the gas under an external low temperature environment.
The air delivery pipe 101 extends into the control box 102, and branches into three groups at a common connection point A in the year of the control box 102, wherein the first branch is led to a sampling pump 107 through a sampling one-way valve 106, the second branch is led to a back-blowing pump 109 through a back-blowing one-way valve 108, the third branch can be further divided into one or more branches, and each branch is led to a sampling bottle 111 through a switching valve 110, so that one or more sampling bottles 111 can be communicated with the third branch. Here, the sampling check valve 106 is normally closed when the sampling pump 107 is turned off, and the blowback check valve 108 is normally closed when the blowback pump 109 is turned off.
In operation, the remote control center first sends a start command to sampling pump 107 to remotely start sampling pump 107, whereby sampling check valve 106, which was normally closed, opens, thereby placing sampling pump 107 in communication with the VOC pollution source along the first branch path via gas line 101. Thus, under the pumping action of the sampling pump 107, the sampling gas will pump the sampling gas from the VOC pollution source, and the sampling gas will flow along the gas pipe 101 to the first branch, and further the original ambient gas in the gas pipe 101 will be driven away from the first branch, and at this time, the gas pipe 101 will be filled with the sampling gas from the VOC pollution source, and no more contains the original ambient gas.
After sampling pump 107 is activated for a specified time (typically no more than 1 minute) to determine that gas line 101 has been enriched with sampled gas from a VOC pollution source and has been completely purged of the original ambient gas, the remote control center sends an instruction to sampling pump 107 to shut down sampling pump 107, and, as noted above, sampling check valve 106 returns to a normally closed state with sampling pump 107 shut down, whereby the first branch is opened.
Then, the remote control center sends a command to open the on-off valve 110, whereby the third branch will communicate with the gas pipe 101, in which case the sampling gas from the VOC pollution source will be delivered to the sampling bottle 111 through the gas pipe 101 via the third branch.
As described above, there are one or more sampling bottles 111. Thus, in the case where there are a plurality of sampling bottles 111, the remote control center can completely select to send an open instruction to a part or all of the corresponding plurality of on-off valves 110, thereby selecting the number of sampling bottles 111 responsible for this sampling and which sampling bottles 111 to sample.
Preferably, a pressure sensor is attached to the interface end of the sample bottle 111, the pressure sensor is in remote communication with a remote control center, and once the pressure sensor senses that the air pressure in the sample bottle 111 reaches a target pressure (e.g., 1 standard atmospheric pressure) during the process of delivering the sample gas to the sample bottle 111 by the VOC pollution source, the pressure sensor sends a sample full signal to the remote control center, thereby the remote control center remotely sends an instruction to close the on-off valve 110.
Of course, the pressure sensor may also have another function, that is, monitor the state in the sampling bottle 111 at any time, and once it is found that the sampling bottle leaks during the sampling process, the sampling bottle 111 sends an alarm signal to the remote control center, and the remote control center automatically switches or prompts to switch the normal channels of other sampling bottles to perform VOC sampling based on the alarm signal, thereby avoiding the damage to the whole system.
After the on-off valve 110 is started, it is determined that the sampling bottle 111 is filled with the sampling gas, and the remote control center sends an instruction to close the on-off valve 110, so that the third branch is turned off, and a worker can take the sampling bottle 111 filled with the sampling gas on site for subsequent analysis.
At this point both the first and third branches have been shut off and the VOC gas sampling operation has virtually ended. However, the overall flow of the remote sampling system for VOC pollution sources provided by the present invention is not terminated, because the sampled gas is still retained in the gas pipe 101, and the sampled gas is retained in the gas pipe 101 to easily contaminate the gas pipe 101, thereby adversely affecting the next gas sampling.
For this purpose, the remote control center sends a command to the reverse-blowing pump 109, thereby activating the reverse-blowing pump 109, whereby the reverse-blowing check valve 108, which is normally closed on the second branch, will open, and the second branch is unblocked. On this basis, the blowback pump 109 will communicate with the gas delivery pipe 101 through the second branch.
In this case, the blowback pump 109 will pump the outside of the ambient gas into the gas pipe 101 through the second branch pump, whereby the flow of the ambient gas will blow the sample gas retained in the gas pipe 101 away from the gas pipe 101 as the ambient gas is blown into the gas pipe 101, and the gas pipe 101 will be filled with the ambient gas. Subsequently, the remote control center will send a command to shut down the blowback pump 109, and with shut down of the blowback pump 109, the blowback check valve 108 will resume its normally closed state, whereupon the second branch is also cut off.
This also explains how the flow of the VOC pollution source remote sampling system described above is started with the gas pipe 101 being filled with ambient gas first, because the ambient gas is back-blown into the gas pipe 101 by the back-blowing pump 109 at the end stage of the flow for pipe cleaning at the last time of gas sampling, whereby the ambient gas remains in the gas pipe 101 at the beginning stage of this sampling.
The remote control center mentioned above is not limited to a specific form, and may be a specially configured computer room, which communicates with the control box 102 remotely and sends remote instructions to implement the switching control for three branches, for example, a schematic diagram of a computer room that can implement the control function of the remote control center is shown in fig. 2A.
Of course, in the current age of developed communication, the control function of the remote control center can be realized by loading the APP on the mobile phone or the tablet computer. For example, a mobile phone APP application interface loaded on a mobile phone that can implement the control function of the remote control center is shown in fig. 2B.
The general structure and operation of the remote sampling system for VOC pollution sources provided by the present invention have been described so far. In summary, the invention provides a remote sampling system for VOC pollution sources, which utilizes three sets of branches to remotely switch and connect, and realizes the introduction, collection and cleaning of sampling gas, wherein the first branch introduces sampling gas to exhaust the environmental gas, so that the sampling gas introduced by the third branch is ensured not to be mixed with original environmental gas, and the second branch back-blowing environmental gas provides a clean environment for the next gas collection, and certainly, the first branch again introduces the sampling gas to exhaust the environmental gas to embed a pen in the next gas collection process. The three branches are collected at the same public connection point A and share the same gas pipe, so that collection of sampling and cleaning functions is realized, the three branches can be integrated in the same control box, miniaturization and high operation efficiency of the system are realized, the whole process only needs to be controlled and switched by a remote control center, investment of manpower and material resources is reduced to the greatest extent, under the operation of the remote control center, technicians only need to operate and install sampling bottles and take away the sampling bottles on site, and for people, the operation is extremely simple, and therefore a plurality of defects existing in the prior art are effectively solved.
The foregoing description of the exemplary embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, and variations which fall within the spirit and scope of the invention are intended to be included in the scope of the invention.

Claims (8)

1. A remote sampling system for VOC pollution sources is characterized by comprising a remote control center, a gas pipe and a control box, wherein one end of the gas pipe is connected with the VOC pollution sources, the other end of the gas pipe is connected with the control box, the gas pipe is used for communicating the VOC pollution sources with the control box,
the gas transmission pipe extends from the VOC pollution source into the control box, and branches into three groups at a public connection point in the control box, wherein the first branch is led to the sampling pump through the sampling one-way valve, the second branch is led to the back-blowing pump through the back-blowing one-way valve, the third branch is led into one or more branches, and each branch is led to a sampling bottle through the switch valve, wherein the sampling one-way valve is in a normally closed state when the sampling pump is shut down, and the back-blowing one-way valve is in a normally closed state when the back-blowing pump is shut down;
firstly, a remote control center sends a starting instruction to a sampling pump to remotely start the sampling pump, and a sampling one-way valve which is originally in a normally closed state is opened, so that the sampling pump is communicated with a VOC pollution source along a first branch path through a gas pipe, therefore, the sampling pump pumps sampling gas from the VOC pollution source, the sampling gas flows to the first branch path along the gas pipe, and the original environmental gas in the gas pipe is completely driven away from the first branch path;
then, the remote control center sends an instruction to the sampling pump to stop the sampling pump, and the sampling one-way valve is restored to a normally closed state, so that the first branch is disconnected;
then, the remote control center sends a command to open the switching valve, so that the third branch is communicated with the gas pipe, and the sampling gas from the VOC pollution source is conveyed to the sampling bottle through the gas pipe via the third branch;
after the sampling bottle is filled with the sampling gas, the remote control center sends an instruction to close the switch valve, thereby the third branch is closed, the sampling gas is still remained in the gas pipe at the moment,
then, the remote control center sends an instruction to the back-blowing pump to start the back-blowing pump, the back-blowing check valve which is originally in a normally closed state on the second branch road is opened, the second branch road is unblocked, the back-blowing pump is communicated with the gas pipe through the second branch road, the back-blowing pump pumps ambient gas into the gas pipe from the outside through the second branch road, therefore, the sampling gas remained in the gas pipe is blown away from the gas pipe by the airflow formed by the ambient gas, and the gas pipe is filled with the ambient gas at the moment,
then, the remote control center will send an instruction to shut down the blowback pump, and with the shut down of the blowback pump, the blowback check valve resumes the normally closed state, at which time the second branch is also shut down.
2. The remote sampling system for VOC pollution sources of claim 1, wherein a dust filter is provided at an end of the gas line adjacent to the VOC pollution source, whereby when the VOC pollution source discharges the sampled gas along the gas line to the control box, the dust filter first filters dust in the sampled gas to avoid the dust from entering the control box.
3. The remote VOC pollution source sampling system of claim 1 wherein a rigid sampling wand is provided along the periphery of the air delivery conduit on a side of the air delivery conduit adjacent the VOC pollution source, whereby the sampling wand is secured to the VOC pollution source when the air delivery conduit is connected to the VOC pollution source.
4. The remote sampling system for VOC pollution sources according to claim 1, wherein the heat tracing pipe is provided to extend along with the gas pipe, thereby heating the gas in the gas pipe all the way along the path along which the gas pipe extends, thereby avoiding condensation of the gas in the gas pipe due to moisture contained in the gas under the environment of low temperature outside.
5. The remote sampling system of VOC pollution sources of claim 1, wherein the remote control center is a computer room that communicates remotely with the control box and sends remote commands to effect switching control between the three branches.
6. The remote sampling system for VOC pollution sources according to claim 1, wherein the APP application is loaded on a mobile phone or tablet computer to implement the control function of a remote control center.
7. The remote sampling system for VOC pollution sources according to claim 1, wherein a pressure sensor is additionally installed at the interface end of the sampling bottle, the pressure sensor communicates with the remote control center in real time, and once the pressure sensor senses that the air pressure in the sampling bottle reaches the target pressure during the process of delivering the sampling gas to the sampling bottle by the VOC pollution source, the pressure sensor sends a sampling full signal to the remote control center, thereby the remote control center remotely sends an instruction to close the on-off valve.
8. The remote sampling system for VOC pollution sources of claim 7, wherein the pressure sensor monitors the status in the sampling bottle in real time, and once the sampling bottle is found to have gas leakage prior to sampling, the sampling bottle sends an alarm signal to the remote control center, and the remote control center automatically switches or prompts switching of the normal channels of other sampling bottles for sampling based on the alarm signal.
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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040177672A1 (en) * 2003-03-13 2004-09-16 Schmitt Clifford T. Volatile organic compound monitoring
CN101858876A (en) * 2010-06-01 2010-10-13 东莞市升微机电设备科技有限公司 Detecting system and humidity detecting method for detecting volatile organic compound
CN105445063A (en) * 2015-11-13 2016-03-30 北京市环境保护监测中心 Remote VOCs (volatile organic compounds) sampling system and sampling method
CN106596782A (en) * 2016-12-22 2017-04-26 汇众翔环保科技河北有限公司 On-line monitoring system and analysis method for volatile organic compounds
CN106872719A (en) * 2017-02-21 2017-06-20 上海宝英光电科技有限公司 A kind of efficient volatile organic matter on-line monitoring system
CN107209090A (en) * 2015-01-15 2017-09-26 Avl排放测试系统有限责任公司 Exhaust gas sampling system and the method for running this exhaust gas sampling system
CN109141990A (en) * 2018-07-27 2019-01-04 杰瑞(天津)石油工程技术有限公司 Natural gas automatically controls continuous sampling system
CN111060359A (en) * 2019-11-27 2020-04-24 宁波市环境监测中心 Multifunctional atmospheric sampling system and atmospheric sampling method
CN111947998A (en) * 2020-09-14 2020-11-17 钢研纳克检测技术股份有限公司 Fixed pollution source VOCs sampling device, system and method
CN112540119A (en) * 2020-12-01 2021-03-23 华通力盛(北京)智能检测集团有限公司 TVOCs organized online monitoring system and working method thereof
CN114459840A (en) * 2021-12-31 2022-05-10 天津津普利环保科技股份有限公司 Intelligent diagnosis and protection system for gas sampling system and diagnosis and protection method thereof
CN115436113A (en) * 2022-09-02 2022-12-06 北京博赛德科技有限公司 Volatile organic compound sampling analysis method and system
CN116008427A (en) * 2022-12-31 2023-04-25 浙江浙大鸣泉科技有限公司 Gas path control system and control method
CN116148419A (en) * 2022-10-23 2023-05-23 江苏中气环境科技有限公司 Open type sewage volatile gas remote monitoring system and monitoring method thereof

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040177672A1 (en) * 2003-03-13 2004-09-16 Schmitt Clifford T. Volatile organic compound monitoring
CN101858876A (en) * 2010-06-01 2010-10-13 东莞市升微机电设备科技有限公司 Detecting system and humidity detecting method for detecting volatile organic compound
CN107209090A (en) * 2015-01-15 2017-09-26 Avl排放测试系统有限责任公司 Exhaust gas sampling system and the method for running this exhaust gas sampling system
CN105445063A (en) * 2015-11-13 2016-03-30 北京市环境保护监测中心 Remote VOCs (volatile organic compounds) sampling system and sampling method
CN106596782A (en) * 2016-12-22 2017-04-26 汇众翔环保科技河北有限公司 On-line monitoring system and analysis method for volatile organic compounds
CN106872719A (en) * 2017-02-21 2017-06-20 上海宝英光电科技有限公司 A kind of efficient volatile organic matter on-line monitoring system
CN109141990A (en) * 2018-07-27 2019-01-04 杰瑞(天津)石油工程技术有限公司 Natural gas automatically controls continuous sampling system
CN111060359A (en) * 2019-11-27 2020-04-24 宁波市环境监测中心 Multifunctional atmospheric sampling system and atmospheric sampling method
CN111947998A (en) * 2020-09-14 2020-11-17 钢研纳克检测技术股份有限公司 Fixed pollution source VOCs sampling device, system and method
CN112540119A (en) * 2020-12-01 2021-03-23 华通力盛(北京)智能检测集团有限公司 TVOCs organized online monitoring system and working method thereof
CN114459840A (en) * 2021-12-31 2022-05-10 天津津普利环保科技股份有限公司 Intelligent diagnosis and protection system for gas sampling system and diagnosis and protection method thereof
CN115436113A (en) * 2022-09-02 2022-12-06 北京博赛德科技有限公司 Volatile organic compound sampling analysis method and system
CN116148419A (en) * 2022-10-23 2023-05-23 江苏中气环境科技有限公司 Open type sewage volatile gas remote monitoring system and monitoring method thereof
CN116008427A (en) * 2022-12-31 2023-04-25 浙江浙大鸣泉科技有限公司 Gas path control system and control method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘雅君;: "烟气VOC监测技术的应用研究", 绿色环保建材, no. 10, 25 October 2017 (2017-10-25), pages 67 *

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