CN104776319B - Combustion gas on-line monitoring method and system in multichannel air sampling type inspection shaft - Google Patents
Combustion gas on-line monitoring method and system in multichannel air sampling type inspection shaft Download PDFInfo
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- CN104776319B CN104776319B CN201510061350.3A CN201510061350A CN104776319B CN 104776319 B CN104776319 B CN 104776319B CN 201510061350 A CN201510061350 A CN 201510061350A CN 104776319 B CN104776319 B CN 104776319B
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Abstract
The present invention proposes combustion gas on-line monitoring system and method in a kind of multichannel air sampling type inspection shaft.Wherein, this method includes：Gas in gas sampling system collection inspection shaft；Gas handling system is pre-processed to the gas in the inspection shaft of collection；Gas testing systems monitor the concentration information of gas in pretreated inspection shaft；The concentration information of gas in signal acquiring system collection inspection shaft, and according to the data message of gas in concentration information generation inspection shaft；And control centre receives the data message of gas in the inspection shaft that signal acquiring system is sent, and judge whether gas pipeline leaks according to the data message of gas in inspection shaft.Combustion gas on-line monitoring method in the multichannel air sampling type inspection shaft of the embodiment of the present invention, it is possible to achieve the real-time monitoring to gas pipeline leakage situation in city.
Description
Technical field
Supervised online the present invention relates to combustion gas in gas safe technical field, more particularly to a kind of multichannel air sampling type inspection shaft
Survey method and system.
Background technology
It is soil layer that city incity gas pipeline, which is largely arranged in around underground, gas pipeline, when combustion gas is from Gas Pipe
In when leaking out, combustion gas can be diffused into the space of surrounding by soil layer.Spread for combustion gas caused by micro-crack, combustion gas is let out
Leakage quantity is limited, therefore will not form the jet-stream wind of high pressure, and the combustion gas of leakage can slowly spread through soil layer.If leakage
Combustion gas to reach explosion limit, it is necessary to there is a space builds up it, and the space around gas ductwork is mainly
Adjacent pipe network, such as sewage network, the combustion gas of leakage can be diffused into adjacent sewage network, because current pipeline is all used
Well lid is closed, and is isopiestic state in pipeline, and combustion gas meeting is spread to two ends in pipeline, gradually reaches well head, build up simultaneously
Continuation is spread forward.
The complexity and the performance of sensor arranged in view of monitoring point, if by sensor arrangement in-line, applied
Work difficulty is big, and sensor, easily by water logging, especially in sewage and storm sewer, the maintenance difficulties of sensor are also larger,
Therefore, generally monitoring point is arranged in inspection shaft at present.But, due in inspection shaft fuel gas on the one hand in the well it is organic
Thing rots what is produced, mainly methane；On the other hand produced from gas leakage, including methane and ethane, accordingly, it would be desirable to
Methane gas is monitored simultaneously and ethane gas are just capable of determining whether it is to have gas pipeline to occur gas leakage.
A kind of natural gas leaking situation at inspection shaft is disclosed in Patent No. ZL 200420049717.7 patent to enter
Row monitors and uploaded in real time the monitoring system of leakage information, but alarm need to be arranged in inspection shaft, due to not having in itself in inspection shaft
There is power supply, cause the power supply of alarm difficult and signal transmission is difficult, and be likely to, by water submerged, lead in heavy rain alarm device
Alarm is caused to scrap.Therefore, when being monitored to all gas pipelines, it is necessary to excavate paving line to solve to road large area
The problem of power supply and signal are transmitted, the expense of operation is very high and difficult to realize during actual installation.
A kind of aspiration gas detecting system is disclosed in Patent No. ZL 200920252054.1 patent, but should
System is not related to signal transfer functions, the selection of inspection shaft not for the gas ductwork leak detection based on detecting inspection shaft
With the optimization of air inlet connected mode, it is impossible to constitute and leak the system monitored on-line to burning line in a large area.
A kind of combustible gas based on wireless sensor network is disclosed in Patent No. ZL 201010587425.9 patent
It is not related to sample to the gas in inspection shaft in body multiple spot on-line monitoring system, the system, and the combustion gas based on inspection shaft is let out
How the key point that sampling is detecting system is carried out to gas in missing inspection examining system.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the present invention is to propose combustion gas on-line monitoring system in a kind of multichannel air sampling type inspection shaft
System, the system can realize the real-time monitoring to gas pipeline leakage situation in city.
Second object of the present invention is to propose combustion gas on-line monitoring method in a kind of multichannel air sampling type inspection shaft.
For up to above-mentioned purpose, first aspect present invention embodiment proposes combustion gas in a kind of multichannel air sampling type inspection shaft and existed
Line monitoring system, including：Gas sampling system, the gas sampling system is used to gather the gas in inspection shaft；Gas treatment system
System, the gas handling system is connected with the gas sampling system, is carried out for the gas in the inspection shaft to collection pre-
Processing；Gas testing systems, the gas testing systems are connected with the gas handling system, for monitoring pretreated basement
The concentration information of gas in well；Signal acquiring system, the signal acquiring system is connected with the gas testing systems, for adopting
Collect the concentration information of gas in the inspection shaft, and according to the data message of gas in the concentration information generation inspection shaft；Control
Center processed, the control centre is connected with the signal acquiring system, for receiving described in the signal acquiring system transmission
The data message of gas in inspection shaft, and judge whether gas pipeline leaks according to the data message of gas in the inspection shaft；And
Electric power system, the electric power system respectively with the gas handling system, the gas testing systems and the signal acquisition system
System is connected, for being powered for the gas handling system, the gas testing systems and the signal acquiring system.
Combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of the embodiment of the present invention, gas sampling system is stretched into
The gas in inspection shaft is gathered in inspection shaft, the gas collected is pre-processed by gas handling system, gas is recycled
Test system is tested gas, and is sent the data message of gas to control centre by signal acquiring system, so that
Surveillance center judges whether gas pipeline leaks according to the data message of gas, and gas pipeline in city is let out so as to realize
The real-time monitoring of dew situation.
For up to above-mentioned purpose, second aspect of the present invention embodiment proposes combustion gas in a kind of multichannel air sampling type inspection shaft and existed
Line monitoring method, including：Gas in gas sampling system collection inspection shaft；Gas handling system is in the inspection shaft of collection
Gas is pre-processed；Gas testing systems monitor the concentration information of gas in pretreated inspection shaft；Signal acquiring system is adopted
Collect the concentration information of gas in the inspection shaft, and according to the data message of gas in the concentration information generation inspection shaft；With
And control centre receives the data message of gas in the inspection shaft that the signal acquiring system is sent, and according in the inspection shaft
The data message of gas judges whether gas pipeline leaks.
Combustion gas on-line monitoring method in the multichannel air sampling type inspection shaft of the embodiment of the present invention, gas sampling system is stretched into
The gas in inspection shaft is gathered in inspection shaft, the gas collected is pre-processed by gas handling system, gas is recycled
Test system is tested gas, and is sent the data message of gas to control centre by signal acquiring system, so that
Surveillance center judges whether gas pipeline leaks according to the data message of gas, and gas pipeline in city is let out so as to realize
The real-time monitoring of dew situation.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of one embodiment of the invention
Figure；
Fig. 2 is the structure of combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of a specific embodiment of the invention
Schematic diagram；
Fig. 3 is that the installation of combustion gas on-line monitoring system is shown in the multichannel air sampling type inspection shaft of one embodiment of the invention
It is intended to；
Fig. 4 is that the inspection shaft of one embodiment of the invention selects the flow chart of optimized algorithm；
Fig. 5 is the flow chart of the air inlet connected mode optimized algorithm of one embodiment of the invention；
Fig. 6 is the schematic diagram of the air inlet parallel connection collection of one embodiment of the invention；
Fig. 7 is the schematic diagram of the air inlet series connection collection of one embodiment of the invention；And
Fig. 8 is the flow chart of combustion gas on-line monitoring method in the multichannel air sampling type inspection shaft of one embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, represent to include
Module, fragment or the portion of the code of one or more executable instructions for the step of realizing specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Below with reference to the accompanying drawings combustion gas on-line monitoring system in multichannel air sampling type inspection shaft according to embodiments of the present invention is described
System and method.
Fig. 1 is the structural representation of combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of one embodiment of the invention
Figure, Fig. 2 is the structural representation of combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of a specific embodiment of the invention
Figure, Fig. 3 is the schematic diagram of the installation of combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of one embodiment of the invention,
Fig. 4 is that the inspection shaft of one embodiment of the invention selects the flow chart of optimized algorithm, and Fig. 5 is the air inlet of one embodiment of the invention
The flow chart of connected mode optimized algorithm, Fig. 6 is the schematic diagram of the air inlet parallel connection collection of one embodiment of the invention, and Fig. 7 is
The schematic diagram of the air inlet series connection collection of one embodiment of the invention.
As depicted in figs. 1 and 2, combustion gas on-line monitoring system includes gas sampling system in the multichannel air sampling type inspection shaft
100th, gas handling system 200, gas testing systems 300, signal acquiring system 400, control centre 500 and electric power system
600.Wherein, gas sampling system 100 includes multiple air inlets 110 and air inlet flash vessel 120, and gas handling system 200 is wrapped
Include pneumatic filter 210, moisture separator 220, asepwirator pump 230, flow controller 240 and drier 250, gas testing systems
300 include methane detector 310 and ethane detector 320, and electric power system 600 includes power supply 610 and electric pressure converter 620.
Specifically, gas sampling system 100 is used to gather the gas in inspection shaft.Wherein, gas sampling system 100 includes many
Individual air inlet 110 and air inlet flash vessel 120, are connected between multiple air inlets 110 and air inlet flash vessel 120 by pipeline,
And the inlet end of multiple air inlets 110 is respectively protruding into different inspection shafts, for gathering the gas in different inspection shafts.Wherein,
Gas in inspection shaft includes the fuel gas such as methane, ethane, in addition to other gases, and air inlet 110, which is respectively placed in, needs prison
The top of the inspection shaft of survey, and screen pack is set in the inlet end of air inlet 110, gathered by air inlet 110 in different inspection shafts
Gas.The inlet end of air inlet flash vessel 120 is connected with the outlet side of multiple air inlets 110, for multiple air inlets 110 to be adopted
The gas in different inspection shafts collected is delivered to gas handling system 200.Wherein, air inlet flash vessel 120 can by it is multiple enter
The collocation of gas port flash vessel is formed, the quantity of the air inlet 110 of each air inlet flash vessel according to demand depending on, air inlet flash vessel
The quantity maximum of the air inlet 110 of 120 connections can reach 100.
Gas handling system 200 is connected with gas sampling system 100, is carried out for the gas in the inspection shaft to collecting pre-
Processing.Wherein, it is connected between gas handling system 200 and gas sampling system 100 by pipeline, in gas handling system 200
Gas cleaning plant can for electrodynamic type or it is mechanical in one kind.
In one embodiment of the invention, gas handling system 200 specifically includes pneumatic filter 210, aqueous vapor separation
Device 220, asepwirator pump 230, flow controller 240 and drier 250.Specifically, the inlet end of pneumatic filter 210 is with entering
The outlet side of gas port flash vessel 120 is connected by pipeline, and pneumatic filter 210 is used for what gas sampling system 100 was collected
Impurity in inspection shaft in gas, such as branch, leaf, particulate matter, is filtered, wherein, pneumatic filter 210 can be machinery
One kind in formula filter and electrodynamic type filter.The inlet end of moisture separator 220 leads to the outlet side of pneumatic filter 210
Cross pipeline to be connected, moisture separator 220 is used to separate the aqueous vapor in gas in inspection shaft, for example, removing gas in inspection shaft
In aqueous water, so as to avoid in gas moisture very high and cause defective detector.The inlet end and aqueous vapor of asepwirator pump 230
The outlet side of separator 220 by pipeline be connected, asepwirator pump 230 is electrodynamic type asepwirator pump, for by the gas in inspection shaft according to
Default flow velocity is delivered to gas testing systems 300.The outlet side of the inlet end of flow controller 240 and asepwirator pump 230 passes through
Pipeline is connected, and enters because gas testing systems 300 need only to the sub-fraction in the inspection shaft of the conveying of asepwirator pump 230 in gas
Row gas test, therefore, it can flow into gas testing systems 300 by flow controller 240 to be further accurately controlled
Gas flow, wherein, flow controller 240 can use mechanical flow controller, for example, valve etc..Drier 250 enters
Gas end is connected with the outlet side of flow controller 240 by pipeline, and dry silica gel can be filled in drier 250 so that from flow
The gas that controller 240 flows out desiccation after dry silica gel, so as to greatly reduce gas in inflow gas test system 300
The moisture of body.
Gas testing systems 300 are connected with gas handling system 200, for monitoring the dense of gas in pretreated inspection shaft
Spend information.Wherein, it can be connected between gas testing systems 300 and gas handling system 200 by pipeline.
In one embodiment of the invention, gas testing systems 300 include methane detector 310 and ethane detector
320.Specifically, methane detector 310 is used for the concentration information for detecting methane in the gas in inspection shaft, and is launched by signal
Device launch methane concentration information, wherein, methane detector 310 can include but is not limited to electric chemical formula, catalytic combustion type,
One kind in infrared type, and methane detector 310 is suction detector.Methane detector 310 can detect inflow gas
The methane concentration value of gas in the inspection shaft of test system 300, methane detector 310 also has sender unit, passes through signal
The methane concentration value detected is sent to signal acquiring system 400 by emitter, wherein, methane detector 310 is adopted with signal
Data transfer mode between collecting system 400 may include wire transmission or be wirelessly transferred in one kind.
Ethane detector 320 is used for the concentration information for detecting ethane in gas in inspection shaft, and is sent out by sender unit
Penetrate the concentration information of ethane.Wherein, ethane detector 320 can include but is not limited to electric chemical formula, catalytic combustion type, infrared type
In one kind, and ethane detector 320 be suction detector.Ethane detector 320 can detect inflow gas test system
The ethane concentration value of gas in the inspection shaft of system 300, ethane detector 320 also has sender unit, is launched by signal and filled
Put the ethane concentration value that will be detected and be sent to signal acquiring system 400, wherein, ethane detector 320 and signal acquiring system
Data transfer mode between 400 may include wire transmission or be wirelessly transferred in one kind.
Signal acquiring system 400 is connected with gas testing systems 300, the concentration information for gathering gas in inspection shaft, and
The data message of gas in inspection shaft is generated according to concentration information.Specifically, signal acquiring system 400 and gas testing systems
Methane detector can be collected using one kind in wired connection either wireless connection, signal acquiring system 400 between 300
After the ethane concentration value that the 310 methane concentration values detected and ethane detector 320 are detected, according to methane concentration value and second
The data message of gas in alkane concentration value generation inspection shaft, wherein, signal acquiring system 400 also has sender unit, passes through
Sender unit sends the data message of gas in the inspection shaft of generation to control centre 500.
Control centre 500 is connected with signal acquiring system 400, in the inspection shaft for receiving the transmission of signal acquiring system 400
The data message of gas, and judge whether gas pipeline leaks according to the data message of gas in inspection shaft.Specifically, in control
Can be using one kind in wired connection either wireless connection, control centre 500 between the heart 500 and signal acquiring system 400
The methane concentration and ethane concentration in the inspection shaft sent in signal acquiring system 400 are received, according to methane concentration and ethane concentration
Whether the common source for determining the gas in inspection shaft is fuel gas pipeline leakage.
Electric power system 600 respectively with gas handling system 200, gas testing systems 300 and the phase of signal acquiring system 400
Even, for being powered for gas handling system 200, gas testing systems 300 and signal acquiring system 400.Wherein, electric power system
600 are connected with gas handling system 200, gas testing systems 300 and signal acquiring system 400 respectively by wire.In this hair
In bright one embodiment, electric power system 600 includes power supply 610 and electric pressure converter 620.Specifically, power supply 610 is used to provide
Electric energy.One end of electric pressure converter 620 is connected with power supply 610, the other end by wire respectively with gas handling system 200, gas
Body examination test system 300 is connected with signal acquiring system 400, and the electric energy for power supply 610 to be provided is converted to predeterminated voltage
The electric energy of value.That is, electric pressure converter 620 is converted to the electric energy that power supply 610 is provided suitable for gas handling system
200th, the electric energy of gas testing systems 300 and signal acquiring system 400.For example, if power supply 610 provided alternating current, electricity
Pressure converter 620 can be converted to alternating current in 24V direct current；Or, if power supply provide 610 be 24V direct current,
Then do not need electric pressure converter 620 to change it, can directly be system power supply.Wherein, electric pressure converter 620 can divide
It is not connected with asepwirator pump 230, methane detector 310, ethane detector 320 and signal acquiring system 400, is that it is powered.
In one embodiment of the invention, power supply 610 is road lamp power supply.Specifically, used in the embodiment of the present invention
Electric power system 600 based on road lamp power supply is gas handling system 200, gas testing systems 300 and signal acquiring system 400
It is powered, because Urban Pipeline Carrying Natural Gas is arranged on the lower section of urban road, the inspection shaft of both sides of the road is the object of monitoring, is utilized
The power supply of illuminating street lamp is powered for system above road, so that power supply mode is simple to operate, and easily realizes.
In one embodiment of the invention, gas handling system 200 and/or gas testing systems 300 are arranged on street lamp
On the inside of lamppost or outer wall.Wherein, the arrangement mode of gas handling system 200 and/or gas testing systems 300 includes one
One kind in word arrangement mode and compact set in arrangement mode, gas handling system 200 and/or gas in word order mode
Test system 300 is arranged on inside lamp post or on outer wall, gas handling system 200 in arrangement mode in compact set
And/or gas testing systems 300 are arranged on the outer wall of lamp post., can be by that is, in an embodiment of the present invention
Gas handling system 200 is on the inside of lamp post either outer wall or can be arranged on gas testing systems 300
Gas handling system 200 and gas testing systems 300 on outer wall or can also be either installed in by the inside of lamp post
On the inside of lamp post or outer wall.Thus, gas handling system 200 and/or gas testing systems 300 are arranged on ground
On lamp post on, rather than in inspection shaft, so as to avoid the methane transducer in gas testing systems 300
310 and ethane sensor 320 under heavy rain environment due in inspection shaft water level go up and caused to damage by water submerged, and beneficial to gas
Signal transmission between body examination test system 300 and signal acquiring system 400.If in addition, gas testing systems 300 and signal are adopted
Transmitted between collecting system 400 using optical fiber, then lay the quantities ratio of optical fiber in Storm Sewer Network, cable pipe trench, sewage network etc.
Laying is much smaller in underground piping, is wirelessly transferred if used between gas testing systems 300 and signal acquiring system 400,
The base station of wireless carriers is borrowed, can be easy to implement with direct construction transmission network by the wireless transport module of equipment,
And difficulty of construction is small.
For example, as shown in figure 3, asepwirator pump is arranged on the bottom of lamp post, gas testing systems are arranged on lamp post
Top, asepwirator pump and gas testing systems arrange in yi word pattern, and between pvc pipe by outer surface cover optical fiber led to
Letter.Asepwirator pump is stretched in inspection shaft below by the pipeline for covering pvc pipe, and supply line utilizes the supply line pair of road lamp power supply
Asepwirator pump and gas testing systems are powered.
In an embodiment of the invention, the road information in region to be monitored and the distribution letter of underground piping network are gathered
Breath, and GIS data system is set up according to the distributed intelligence of road information and underground piping network.Specifically, in gas collecting
, it is necessary to select which inspection shaft to need monitoring before system 100 is used to gather the gas in inspection shaft.Treated firstly, it is necessary to collect some
Road information and rain pipe network, Gas Pipe network, sewage pipe network, cable managed network, the water supply network of monitored area
Network, heating pad pipe network etc. are arranged in the segment information of the managed network of underground, set up GIS (Geographic Information
System, GIS-Geographic Information System) data system.
In one embodiment of the invention, multiple wait to supervise according to what inspection shaft selected that optimized algorithm determines in region to be monitored
Survey inspection shaft.For example, as shown in figure 4, first, choose one section of gas pipeline, along the direction of gas pipeline axis by gas pipeline
N parts are divided into, and n parts of gas pipeline is classified into successively marked as 1,2 along axis direction ... n.Then, this section is chosen
Inspection shaft around gas pipeline within 20m, chooses m parts of gas pipelines, m initial value is 1, crosses m parts of axis centre points and does
Vertical plane, selection perpendicular to axis positive direction side and 3 inspection shafts closest from pipe gas pipeline, according to from a distance from vertical plane by
Proximal and distal 3 inspection shafts by selection are respectively marked as t1, t2, t3, and calculate inspection shaft t1, t2, t3With the distance of this section of burning line,
Distance is designated as R respectively1,R2,R3.If R1=R2, then R is compared2With R3If, R2＜ R3, t1And t3Number inspection shaft is required for being surveyed
Examination, if R2＞ R3, then t1And t2Number inspection shaft is required for being tested, if R1It is not equal to R2, then R is compared1With R2If, R1＜ R2,
Then t1Number inspection shaft is set to point to be monitored, if R1＞ R2, then t2Number inspection shaft is set to point to be monitored.Then m=m+1 is made, is circulated
Compared next time, the point to be monitored that each section of gas pipeline needs to set thus is calculated successively, until m=n stops counting
Calculate.
In an embodiment of the invention, determined according to air inlet connected mode optimized algorithm in multiple inspection shafts to be monitored
The connected mode of air inlet.For example, as shown in Figure 5-Figure 7, the road of the inspection shaft of monitoring in need around one section is chosen, by inspection shaft
The n that is 1,2,3 along road direction numbering ..., selection m and m+1 inspection shaft, m initial value are 1, and m ＜ n, m-th of basement of calculating
Well is d with flower bed vertical range where street lampm, the m+1 inspection shaft is d with flower bed vertical range where street lampm+1, m-th of inspection shaft
It is d with the m+1 inspection shaft distance(m, m+1)If, dm＞ d(m, m+1), and dm＞ dm+1, then the air inlet of m+1 inspection shafts and m inspection shafts
Mouth is connected to m wells by the way of series connection from m+1 wells.If dm＞ d(m, m+1), and dm≤dm+1, then m inspection shafts and m+
The air inlet of No. 1 inspection shaft is connected to m+1 wells by the way of series connection from m wells.If dm≤d(m, m+1), No. m and No. m+1
The air inlet of inspection shaft is by the way of in parallel.Then m=m+1 is made, circulation is compared, thus calculated successively each next time
Section gas pipeline needs the point to be monitored set, until m=n stops calculating.
Citing below elaborates combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of the embodiment of the present invention
System.
Embodiment 1
Combustion gas on-line monitoring system includes gas inlet 5 in multichannel air sampling type inspection shaft for monitoring gas leakage
Individual, a set of air inlet flash vessel, pneumatic filter, mechanical moisture separator, asepwirator pump, flow controller, drier, methane
Detector, ethane detector, road lamp power supply interface, electric pressure converter, signal picker, control centre, wherein, gas inlet
Stretch into inspection shaft, one end of air inlet is connected with air-breathing funnel, Funnel diameter is less than 10cm, funnel air inlet assembling plastic protection
Net, mesh diameter is less than 2mm, is connected between gas inlet and air inlet flash vessel using a diameter of 15mm combustion gas with PE pipes.
Air inlet flash vessel one end is connected using a diameter of 15mm combustion gas with PE pipes with mechanical pneumatic filter, the other end and one 5
The joint distributor of joint is connected, and is connected with obtaining 5 air inlet connections with air inlet.The diameter of mechanical pneumatic filter is small
In 10cm, the diameter of mechanical moisture separator is less than 10cm.Asepwirator pump uses the FAA6003 type air-breathings newly produced for sincere company
Pump, peak velocity is 3L/min, the three-way ball that mechanical flow controller is produced using brilliant valve Co., Ltd of Shanxi section of section
Valve, one end of triple valve is connected with the gas outlet of asepwirator pump, a diameter of 15mm of other end plastic pipe joint drier, gas stream
Speed control is in 400ml/min, and the other end of triple valve is connected with a plastic tube, and unnecessary gas is discharged.Drier is adopted
With silica gel drier, the other end is connected using a diameter of 8mm plastic tubes with methane detector.Methane detector is public using Cole's promise
The MOT500-EX type catalytic combustion type methane detectors of production are taken charge of, wireless transport module is equipped with, gas outlet uses a diameter of 8mm
Plastic tube is connected with ethane detector.Ethane detector uses the MOT500-EX type catalytic combustion type second that Cole's promise company produces
Alkane detector, is equipped with wireless transport module, gas is discharged using a diameter of 8mm plastic tubes in gas outlet.Signal picker is used
The DN3000 of Cole's promise company production, is equipped with wireless receiving and wireless transport module, wireless transport module is by 3G mobile networks
Control centre is transmitted a signal to, and road lamp power supply interface is connected with street lamp power supply, road lamp power supply cable, voltage is gone to by electric pressure converter
24V direct currents, electric pressure converter is powered by wire to asepwirator pump, methane detector, ethane detector, signal picker.Gas
Body filter, mechanical moisture separator, asepwirator pump, flow controller, drier, methane detector, ethane detector, street lamp
Power interface, electric pressure converter are arranged in order, and are fixed on underframe, and these equipment then are fixed on into lamp post by underframe
It is interior.
Monitoring device installation site is the inside of lamp post, and one end is connected by wire with the service cable in lamppost,
The other end is connected with the electric power system of monitoring device.Sampling pipe is stretched out from sampling flash vessel, sampling pipe is embedded in underground 40cm
Put, one end is stretched into inspection shaft, then connect air inlet, the buried construction principle in underground of sampling pipe is that pavement excavation distance is most short,
Lamp post is on flower bed, and digging distance makes the distance excavated on road surface most short on increase flower bed.
Embodiment 2
Combustion gas on-line monitoring system in multichannel air sampling type inspection shaft for monitoring gas leakage, including gas inlet
10, a set of air inlet flash vessel, pneumatic filter, mechanical moisture separator, asepwirator pump, flow controller, drier, first
Alkane detector, ethane detector, road lamp power supply interface, electric pressure converter, signal picker, wherein control centre, gas inlet
One end of mouth is connected in inspection shaft with air-breathing funnel, and Funnel diameter is less than 10cm, funnel air inlet assembling plastic protection net, mesh
Diameter is less than 2mm, and gas inlet is managed between air inlet flash vessel using a diameter of 15mm combustion gas with PE to be connected.Air inlet expands
One end is connected using a diameter of 15mm combustion gas with PE pipes with mechanical pneumatic filter, and the other end connects with 2 joint
Head distributor is connected, and the joint distributor that 2 interfaces of joint distributor of 2 joints are distinguished again with 5 joints is connected, to obtain
10 air inlet connections are connected with air inlet.The diameter of mechanical pneumatic filter is less than 10cm, mechanical moisture separator
Diameter is less than 10cm.Asepwirator pump uses the VAK5008 type asepwirator pumps newly produced for sincere company, and mean flow rate is 5L/min, machinery
Formula flow controller using the brilliant valve Co., Ltd production of Shanxi section of section tee ball valve, one end of triple valve and asepwirator pump
Gas outlet is connected, and the other end is controlled in 400ml/min with a diameter of 15mm plastic pipe joints drier, gas flow rate, triple valve
The other end is connected with a plastic tube, and unnecessary gas is discharged.Drier uses silica gel drier, and the other end is using a diameter of
8mm plastic tubes are connected with methane detector.Methane detector uses the MOT500-EX type catalytic combustion types that Cole's promise company produces
Methane detector, is equipped with wireless transport module, gas outlet is connected using a diameter of 8mm plastic tubes with ethane detector.Ethane is visited
The MOT500-EX type catalytic combustion type ethane detectors that device uses Cole's promise company to produce are surveyed, wireless transport module, outlet is equipped with
Mouth connects a diameter of 8mm plastic tubes and discharges gas.Signal picker produces DN9000 using Cole's promise company, is equipped with wireless receiving
And wireless transport module, wireless transport module build 433MHz wireless networks transmit a signal to control centre, road lamp power supply connects
Mouth is connected with street lamp power supply, road lamp power supply cable, voltage is changed into 24V direct currents by electric pressure converter, electric pressure converter is by wire to suction
Air pump, methane detector, ethane detector, signal picker are powered.Pneumatic filter, mechanical moisture separator, asepwirator pump,
Flow controller, drier, methane detector, ethane detector, road lamp power supply interface, electric pressure converter are arranged in order, fixed
On underframe, then these equipment are fixed in lamp post by underframe.
Monitoring device installation site is the top of lamppost outside lamp post, and one end passes through the power supply electricity in wire and lamppost
Cable is connected, and the other end is connected with the electric power system of monitoring device.Sampling pipe is stretched out from sampling flash vessel, sampling pipe is embedded in underground
50cm positions, one end is stretched into inspection shaft, then connects air inlet, and the buried construction principle in underground of sampling pipe is pavement excavation distance
Most short, lamp post is on flower bed, and digging distance makes the distance excavated on road surface most short on increase flower bed.
Embodiment 3
Combustion gas on-line monitoring system in multichannel air sampling type inspection shaft for monitoring gas leakage, including gas inlet
20, a set of air inlet flash vessel, pneumatic filter, electric water gas separating device, asepwirator pump, flow controller, drier, first
Alkane detector, ethane detector, road lamp power supply interface, electric pressure converter, signal picker, wherein control centre, gas inlet
Mouth is stretched into inspection shaft, and one end of air inlet is connected with air-breathing funnel, and Funnel diameter is less than 10cm, and funnel air inlet assembling plastics are prevented
Protecting wire net, mesh diameter 1mm is connected, air inlet expands between gas inlet and air inlet flash vessel using 15mm combustion gas with PE pipes
One end is connected using a diameter of 15mm combustion gas with PE pipes with mechanical pneumatic filter, and the other end connects with 4 joint
Head distributor is connected, and the joint distributor of the joint distributors of 4 joints again with 45 joints is connected, and is connect with obtaining 20 air inlets
Head is connected with air inlet.The diameter of mechanical pneumatic filter is less than 10cm, and the diameter of mechanical moisture separator is less than 10cm.
Asepwirator pump uses the FCY5015 type asepwirator pumps newly produced for sincere company, and mean flow rate is 9L/min, and mechanical flow controller is adopted
The tee ball valve produced with brilliant valve Co., Ltd of Shanxi section of section, one end of triple valve is connected with asepwirator pump gas outlet, another
End is controlled in 400ml/min, the other end of triple valve and a plastics with a diameter of 15mm plastic pipe joints drier, gas flow rate
Pipe is connected, and unnecessary gas is discharged.Drier uses silica gel drier, and the other end uses a diameter of 8mm plastic tubes and methane
Detector is connected.Methane detector uses the Primax RI infrared type methane detectors that Mei Sian companies produce, and is equipped with wired biography
Defeated module, gas outlet is connected using a diameter of 8mm plastic tubes with ethane detector.Ethane detector is produced using Mei Sian companies
Primax RI infrared type ethane detectors, be equipped with wired transport module, gas outlet connects a diameter of 8mm plastic tubes and arranges gas
Go out.Signal picker produces DN3000 using Cole's promise company, is equipped with cable network reception and wire transmission module, wire transmission module
Control centre is transmitted a signal to, wired connection is connected using optical fiber；Pneumatic filter, mechanical moisture separator, air-breathing
Pump, flow controller, drier, methane detector, ethane detector, road lamp power supply interface, electric pressure converter compact arrangement, Gu
It is scheduled on underframe, then these equipment is fixed in lamp post by underframe.
Monitoring device installation site is the top of lamppost outside lamp post, and one end passes through the power supply electricity in wire and lamppost
Cable is connected, and the other end is connected with the electric power system of monitoring device.Sampling pipe is stretched out from sampling flash vessel, sampling pipe is embedded in underground
40cm positions, one end is stretched into inspection shaft, then connects air inlet, and the buried construction principle in underground of sampling pipe is pavement excavation distance
Most short, lamp post is on flower bed, and digging distance makes the distance excavated on road surface most short on increase flower bed.
Combustion gas on-line monitoring system in the multichannel air sampling type inspection shaft of the embodiment of the present invention, gas sampling system is stretched into
The gas in inspection shaft is gathered in inspection shaft, the gas collected is pre-processed by gas handling system, gas is recycled
Test system is tested gas, and is sent the data message of gas to control centre by signal acquiring system, so that
Surveillance center judges whether gas pipeline leaks according to the data message of gas, and gas pipeline in city is let out so as to realize
The real-time monitoring of dew situation.
In addition, combustion gas on-line monitoring system has advantages below in the multichannel air sampling type inspection shaft of the embodiment of the present invention：
1st, it is powered using the road lamp power supply of illumination above road for monitoring system, power supply mode is simple to operate, it is easy to
Realize；
2nd, because monitoring system is installed on the ground, according to wire transmission, laying optical fiber ratio is in drain pipe network, cable
The quantities of the buried pipe network inner ply fiber such as managed network, sewage pipe network is small, according to being wirelessly transferred, borrows wireless network
The base station of operator, equipment by wireless transport module can direct construction transmission network, easy to implement, difficulty of construction is small；
3rd, gas testing systems are arranged on lamp post, it is to avoid sensor device is under heavy rain environment by water submerged
Cause to damage, and the gas of suction is removed water by gas handling system so that the gas for entering gas testing systems reaches
Dry requirement；
4th, air inlet is stretched to and gas is gathered in inspection shaft, monitoring system is caused by air inlet flash vessel while can be right
Gas in multiple inspection shafts is monitored, and considerably reduces monitoring cost.
In order to realize above-described embodiment, the present invention also proposes combustion gas on-line monitoring side in a kind of multichannel air sampling type inspection shaft
Method.
Fig. 8 is the flow chart of combustion gas on-line monitoring method in the multichannel air sampling type inspection shaft of one embodiment of the invention,
As shown in figure 8, combustion gas on-line monitoring method includes in the multichannel air sampling type inspection shaft：
S801：Gas in gas sampling system collection inspection shaft.
S802：Gas handling system is pre-processed to the gas in the inspection shaft of collection.
S803：Gas testing systems monitor the concentration information of gas in pretreated inspection shaft.
S804：The concentration information of gas in signal acquiring system collection inspection shaft, and gas in inspection shaft is generated according to concentration information
The data message of body.
S805：Control centre receives the data message of gas in the inspection shaft that signal acquiring system is sent, and according in inspection shaft
The data message of gas judges whether gas pipeline leaks.
In one embodiment of the invention, between gas testing systems and signal acquiring system and signal acquisition system
Communicated between system and control centre by way of wireless connection.
In one embodiment of the invention, before the gas that gas sampling system gathers in inspection shaft, in addition to：Collect
The distributed intelligence of the road information and underground piping network in region to be monitored, and according to road information and point of underground piping network
Cloth information sets up GIS data system.Wherein, underground piping network include rain pipe network, Gas Pipe network, sewage pipe network,
It is a variety of in cable managed network, feed pipe network, heating pad pipe network
In one embodiment of the invention, GIS is being set up according to the distributed intelligence of road information and underground piping network
After data system, in addition to：Optimized algorithm is selected to determine multiple inspection shafts to be monitored in region to be monitored according to inspection shaft.
In one embodiment of the invention, multiple treated select that optimized algorithm determines in prison domain to be treated according to inspection shaft
After monitoring inspection shaft, in addition to：Air inlet in multiple inspection shafts to be monitored is determined according to air inlet connected mode optimized algorithm
Connected mode.
Combustion gas on-line monitoring method in the multichannel air sampling type inspection shaft of the embodiment of the present invention, gas sampling system is stretched into
The gas in inspection shaft is gathered in inspection shaft, the gas collected is pre-processed by gas handling system, gas is recycled
Test system is tested gas, and is sent the data message of gas to control centre by signal acquiring system, so that
Surveillance center judges whether gas pipeline leaks according to the data message of gas, and gas pipeline in city is let out so as to realize
The real-time monitoring of dew situation.
It should be noted that in the multichannel air sampling type inspection shaft of the embodiment of the present invention combustion gas on-line monitoring method it is specific
The side of implementing of combustion gas on-line monitoring system part in the multichannel air sampling type inspection shaft of implementation and the embodiment of the present invention
Formula is similar, specifically refers to the description of components of system as directed, in order to reduce redundancy, does not repeat herein.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", etc. term should
It is interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect,
It can be electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the company of two element internals
The interaction relationship of logical or two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (15)
1. combustion gas on-line monitoring system in a kind of multichannel air sampling type inspection shaft, it is characterised in that including：
Gas sampling system, the gas sampling system is used to gather the gas in inspection shaft, wherein, the gas sampling system tool
Body includes：Multiple air inlets, one end of the multiple air inlet is respectively protruding into different inspection shafts, and the multiple air inlet is used for
Gather the gas in the different inspection shafts；And air inlet flash vessel, one end of the air inlet flash vessel with it is the multiple enter
The other end of gas port is connected, and the gas is delivered to for the gas in the different inspection shafts that gather the multiple air inlet
Processing system；
Gas handling system, the gas handling system is connected with the gas sampling system, for the inspection shaft to collection
Interior gas is pre-processed, wherein, the gas handling system is specifically included：Pneumatic filter, the pneumatic filter
One end is connected with the other end of the air inlet flash vessel, for being filtered to the impurity in the gas in the inspection shaft；Water
Gas separating device, one end of the moisture separator is connected with the other end of the pneumatic filter, in the inspection shaft
Aqueous vapor in gas is separated；Asepwirator pump, one end of the asepwirator pump is connected with the moisture separator；Flow controller,
The flow controller is connected with the other end of the asepwirator pump, and the gas of the gas testing systems is flowed into for control
Flow；And drier, one end of the drier is connected with the other end of the flow controller, in the inspection shaft
Gas be dried；
Gas testing systems, the gas testing systems are connected with the gas handling system, for monitoring pretreated basement
The concentration information of gas in well；
Signal acquiring system, the signal acquiring system is connected with the gas testing systems, for gathering gas in the inspection shaft
The concentration information of body, and according to the data message of gas in the concentration information generation inspection shaft；
Control centre, the control centre is connected with the signal acquiring system, is sent for receiving the signal acquiring system
The inspection shaft in gas data message, and judge whether gas pipeline is let out according to the data message of gas in the inspection shaft
Leakage；And
Electric power system, the electric power system is adopted with the gas handling system, the gas testing systems and the signal respectively
Collecting system is connected, for being powered for the gas handling system, the gas testing systems and the signal acquiring system.
2. monitoring system as claimed in claim 1, it is characterised in that the gas testing systems are specifically included：
Methane detector, the methane detector is used for the concentration information for detecting methane in the gas in the inspection shaft, and passes through
Sender unit launches the concentration information of the methane；And
Ethane detector, the ethane detector is used for the concentration information for detecting ethane in the gas in the inspection shaft, and passes through
Sender unit launches the concentration information of the ethane.
3. monitoring system as claimed in claim 2, it is characterised in that the methane detector and/or the ethane detector
Including one kind in electric chemical formula, catalytic combustion type, infrared type detector.
4. monitoring system as claimed in claim 3, it is characterised in that the methane detector and/or the ethane detector
For suction detector.
5. monitoring system as claimed in claim 1, it is characterised in that the electric power system is specifically included：
Power supply, for providing electric energy；
Electric pressure converter, the electric pressure converter is connected with the power supply, and the electric energy for the power supply to be provided is converted to tool
There is the electric energy of preset voltage value.
6. monitoring system as claimed in claim 5, it is characterised in that the power supply is road lamp power supply.
7. monitoring system as claimed in claim 6, it is characterised in that the gas handling system and/or the gas test
System is arranged on the inside of lamp post or outer wall.
8. monitoring system as claimed in claim 7, it is characterised in that the gas handling system and/or the gas test
The arrangement mode of system includes one kind in arrangement mode in word order mode and compact set, in the word order mode
The gas handling system and/or the gas testing systems are arranged on inside the lamp post or on outer wall, described
Gas handling system described in arrangement mode and/or the gas testing systems are arranged on the outer of the lamp post in compact set
On wall.
9. monitoring system as claimed in claim 1, it is characterised in that the gas testing systems and the signal acquiring system
Between and the signal acquiring system and the control centre between communicated by way of wireless connection.
10. combustion gas on-line monitoring method in a kind of multichannel air sampling type inspection shaft, it is characterised in that including：
Gas in gas sampling system collection inspection shaft, wherein, the gas sampling system is specifically included：Multiple air inlets, institute
The one end for stating multiple air inlets is respectively protruding into different inspection shafts, and the multiple air inlet is used to gather in the different inspection shafts
Gas；And air inlet flash vessel, one end of the air inlet flash vessel is connected with the other end of the multiple air inlet, is used for
The gas in the different inspection shafts that the multiple air inlet is gathered is delivered to the gas handling system；
Gas handling system is pre-processed to the gas in the inspection shaft of collection, wherein, the gas handling system is specific
Including：Pneumatic filter, one end of the pneumatic filter is connected with the other end of the air inlet flash vessel, for described
The impurity in gas in inspection shaft is filtered；Moisture separator, one end of the moisture separator and the pneumatic filter
The other end be connected, for being separated to the aqueous vapor in the gas in the inspection shaft；Asepwirator pump, one end of the asepwirator pump with
The moisture separator is connected；Flow controller, the flow controller is connected with the other end of the asepwirator pump, for controlling
Flow into the flow of the gas of the gas testing systems；And drier, one end of the drier is controlled with the flow
The other end of device is connected, for the gas in the inspection shaft to be dried；
Gas testing systems monitor the concentration information of gas in pretreated inspection shaft；
Signal acquiring system gathers the concentration information of gas in the inspection shaft, and is generated according to the concentration information in the inspection shaft
The data message of gas；And
Control centre receives the data message of gas in the inspection shaft that the signal acquiring system is sent, and according to the inspection shaft
The data message of interior gas judges whether gas pipeline leaks.
11. monitoring method as claimed in claim 10, it is characterised in that the gas testing systems and the signal acquisition system
Communicated between system and between the signal acquiring system and the control centre by way of wireless connection.
12. monitoring method as claimed in claim 10, it is characterised in that gas sampling system gather gas in inspection shaft it
Before, in addition to：The distributed intelligence of the road information and underground piping network in region to be monitored is gathered, and according to the road information
GIS data system is set up in distributed intelligence with underground piping network.
13. monitoring method as claimed in claim 12, it is characterised in that the underground piping network include rain pipe network,
It is a variety of in Gas Pipe network, sewage pipe network, cable managed network, feed pipe network, heating pad pipe network.
14. monitoring method as claimed in claim 12, it is characterised in that according to the road information and underground piping network
Distributed intelligence set up after GIS data system, in addition to：
Optimized algorithm is selected to determine multiple inspection shafts to be monitored in the region to be monitored according to inspection shaft.
15. monitoring method as claimed in claim 14, it is characterised in that treated described in selecting optimized algorithm determination according to inspection shaft
After multiple inspection shafts to be monitored in monitored area, in addition to：
The connected mode of the air inlet in the multiple inspection shaft to be monitored is determined according to air inlet connected mode optimized algorithm.
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| CN110645481B (en) * | 2018-06-27 | 2021-11-19 | 广州发展集团股份有限公司 | Danger control method for gas pipeline leakage |
| CN109215295B (en) | 2018-09-11 | 2020-07-14 | 清华大学合肥公共安全研究院 | Method and device for judging gas leakage and electronic equipment |
| CN113435727B (en) * | 2021-06-22 | 2022-10-25 | 安徽泽众安全科技有限公司 | Method for acquiring gas diffusion range under single-point alarm of communication pipeline |
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