CN108281078A - The simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe - Google Patents
The simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe Download PDFInfo
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- CN108281078A CN108281078A CN201810209187.4A CN201810209187A CN108281078A CN 108281078 A CN108281078 A CN 108281078A CN 201810209187 A CN201810209187 A CN 201810209187A CN 108281078 A CN108281078 A CN 108281078A
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- G—PHYSICS
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- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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Abstract
The present invention provides a kind of simulated experiment platforms of pipe leakage diffusion.Including：Inlet well is arranged on one end top of piping lane model pipe in piping lane model pipe, and the inlet well and dioxide bottle communicate；Blast pit is set in the tail end of the piping lane model pipe, which is discharged to the carbon dioxide gas that the piping lane model pipe is discharged in outside atmosphere；Leak is bored in the middle part bottom surface of piping lane model pipe, leakage point syringe needle is inserted into leak, leakage point syringe needle connects nitrogen gas cylinder by tracheae and via solenoid valve；Multiple gas sampling holes are equipped in the side of the piping lane model pipe, gas sampling assembly is screwed on the front longitudinal beam of piping lane model pipe, and gas sampling assembly is inserted into gas sampling hole, is sampled to the gas at the gas sampling hole.The simulation to underground pipe gallery model pipe interior conduit leakage situation may be implemented in simulated experiment platform provided by the invention, and passes through the gas of the automatic sampled leakage of gas sampling assembly.
Description
Technical field
The present invention relates to fuel gas pipeline leakage experimental technique field more particularly to a kind of pipes of underground pipe gallery model pipe
The simulated experiment platform of road Release and dispersion.
Background technology
Gas pipeline is the critical piping in underground pipe gallery, in the long-term use, it may occur that leakage danger
Danger.In order to cope with the generation of leakage situation, timely and effectively early warning is made, is needed to the gas alarm concentration set point (upper limit
Value), emergency cut-off concentration set point and gas detector lay the parameters such as ventilation number in distance and piping lane model pipe and carry out
Experiment test, determines validity, the economy of gas pipeline, and adjusts accordingly.Since gas leakage experiment is difficult on the spot
It carries out, is now directed to the diffusion of underground pipe gallery model pipe fuel gas pipeline leakage and simulated experiment platform is set up in emergency response field,
In experiment, in order to measure the gas concentration after gas leaks in piping lane model pipe, need at multiple time points, while to piping lane mould
The gas of the multiple and different positions of type pipe is sampled.
Patent of invention CN105894936A discloses a kind of underground coal mine exogenous fire small size simulated experiment platform, the simulation
Experimental bench includes tunnel and mating TT＆C system.Tunnel can be simulated, and there is a situation where when fire and monitoring smoke components and each
Concentration of component, Regularity of Smoke Movement, change of temperature field rule etc..
The shortcomings that above-mentioned simulated experiment platform is：The structure of the simulated experiment platform is complex, of high cost, institute's monitoring project compared with
It is more, for the simulation to Fires Occurred in manual work environment, the simulation of leakage situation can not be suitable for.
Invention content
The embodiment provides a kind of pipe leakage of underground pipe gallery model pipe diffusion simulated experiment platform,
The shortcomings that overcome the prior art.
To achieve the goals above, this invention takes following technical solutions.
A kind of simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe, including：Piping lane model pipe, passes through
Crossbeam, front and back longeron and vertical beam constitute total body support frame of the piping lane model pipe, are set on one end top of the piping lane model pipe
Inlet well is set, the inlet well and dioxide bottle communicate；
In the tail end of the piping lane model pipe, blast pit, the titanium dioxide which the piping lane model pipe is discharged are set
Carbon gas is discharged in outside atmosphere；
Leak is bored in the middle part bottom surface of the piping lane model pipe, leakage point syringe needle, leakage point needle are inserted into leak
Head connects nitrogen gas cylinder by tracheae and via solenoid valve；
Multiple gas sampling holes are equipped in the side of the piping lane model pipe, gas sampling assembly is screwed in pipe
On the front longitudinal beam of corridor model pipe, the gas sampling assembly is inserted into the gas sampling hole, at the gas sampling hole
Gas is sampled.
Further, the side support of the simulated experiment platform, the side are connected and composed by two crossbeams and two vertical beams
Holder constitutes total body support frame of the simulated experiment platform with a front longitudinal beam and two floor side members again；Described in the floor side member support
Piping lane model pipe, the front longitudinal beam support gas sampling assembly.
Further, the section of the piping lane model pipe is rectangle, and the main body of the piping lane model pipe is set using segmented
Meter, junction are connected using fixing nut, and are equipped with baffle gasket in junction；The both sides of the piping lane model pipe are equipped with gear
Plate, baffle are fixed with piping lane model pipe by fixing nut, and the centre of baffle is equipped with baffle gasket.
Further, one end top of the piping lane model pipe be arranged square hole, and square hole be arranged inlet well, it is described into
Multistage is arranged in gas well, and by flanged joint homogenizing plate is arranged among inlet well connecting flange, described in each subsection-inlet well
Connector is arranged in the top of inlet well, which is communicated by air induction hose, pressure reducing valve and dioxide bottle, when opening titanium dioxide
The switch of carbon gas cylinder, and pressure reducing valve is adjusted, carbon dioxide gas uniformly flows into piping lane mould by pipeline, inlet well, homogenizing plate
Type pipe.
Further, blast pit is set in the tail end of the piping lane model pipe, the top setting exhaust of the blast pit is soft
The carbon dioxide gas that piping lane model pipe is discharged is discharged in outside atmosphere by pipe, the exhaust hose.
Further, leak is bored in the middle part bottom surface of the piping lane model pipe, leakage point syringe needle is inserted into leak,
The leakage point syringe needle connects nitrogen gas cylinder by tracheae and via solenoid valve, is depressurized by the nitrogen adjusted on nitrogen gas cylinder
Valve controls the pressure of gas leakage；When the solenoid valve is opened, nitrogen passes through pressure reducing valve, solenoid valve, tracheae from nitrogen gas cylinder
It is leaked into piping lane model pipe with leakage point syringe needle.
Further, rotation amplitude is ± 180 ° to the leakage point syringe needle along the horizontal plane.
Further, multiple gas sampling holes are equipped in the side of the piping lane model pipe, multiple gas sampling assemblies are logical
It crosses screw to be fixed on front longitudinal beam, gas sampling assembly is inserted into the gas sampling hole of piping lane model pipe side, at the hole
Gas sampling.
Further, the top surface of the piping lane model pipe is provided with gas pressure and speed measurer, measures the pipe
The gas pressure and speed of the top surface of corridor model pipe.
The simulated experiment provided in an embodiment of the present invention it can be seen from the technical solution that embodiments of the invention described above provide
The simulation to underground pipe gallery model pipe interior conduit leakage situation may be implemented in platform, and is sampled automatically by gas sampling assembly
Leaked gas.The structure of this simulated experiment platform is simple, and economy is strong, and semi-automatic control is easy to operate.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of simulated experiment of the pipe leakage diffusion of underground pipe gallery model pipe provided in an embodiment of the present invention
The structural schematic diagram of platform；
Fig. 2 is a kind of structural schematic diagram of gas sampling assembly provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of leakage point syringe needle provided in an embodiment of the present invention.
Reference sign
Vertical beam 1；Right-angle connector 2；Crossbeam 3；Floor side member 4；Baffle 5；Baffle gasket 6；Blast pit 7；Exhaust hose 8；Pipe
Corridor model pipe 9；Gas sampling hole 10；Gas pressure and speed measurer 11；Air induction hose 12；Inlet well 13；Homogenizing plate 14；Two
Carbonoxide gas cylinder 15；Nitrogen gas cylinder 16；Solenoid valve 17；Leakage point syringe needle 18；Front longitudinal beam 19；Fixing nut 20；Gas sampling fills
Set 21；Syringe 22；Syringe rack 23；Plastics fixes sleeve 24；Boosting bar 25；Boosting rod sleeve 26；Electromagnetism cylinder 27；It is fixed
Holder 28；Plastic lid 29；Pedestal 30；Circular gasket 31；Leak 32.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the present invention arranges
It refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition to take leave " comprising "
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) there is meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the meaning of too formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
The simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe provided in an embodiment of the present invention can be
Flowing and the regularity of distribution of the gas leakage after-burning gas in piping lane model pipe in laboratory simulation piping lane model pipe, due to using combustion
Gas experiment has inflammable and explosive danger, and basic ideas of the invention are that sky is simulated in piping lane model pipeline using carbon dioxide
Flow of air simulates gas leakage, since the density ratio of carbon dioxide and nitrogen is similar to the combustion gas of air and natural gas with nitrogen
Density ratio, diffusion property is also much like, safely can realize gas leakage and diffusion experiment in laboratory in this way.
A kind of simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe provided in an embodiment of the present invention
Structure, should as shown in Figure 1, the frame structure of the simulated experiment platform connects and composes side support by two crossbeams 3 and two vertical beams 1
Side support constitutes total body support frame with a front longitudinal beam 19 and two floor side members 4 again.Wherein floor side member 4 supports piping lane model pipe 9,
Front longitudinal beam 19 supports gas sampling assembly 21, and above-mentioned crossbeam, front and back longeron and vertical beam are constituted whole by standard aluminium alloy extrusions
The frame structure of body.It is connected by the right-angle connector of standard 2 between all aluminium alloy extrusions and is fixed by screw.
Piping lane model pipe 9 is manufactured using organic glass, and section is rectangle, Width x Height size ratio and true piping lane model
The ratio of width to height of pipe is identical.Piping lane model pipe main body uses sectional design, and in order to install and connect, junction is using fixed spiral shell
Mother 20 connects, and is equipped with baffle gasket 6 in junction and ensures air-tightness, can simulate the piping lane model pipe tunnel of random length in this way
Road.Fig. 1 only shows that one section of piping lane model pipe 9, the both sides of piping lane model pipe 9 are equipped with baffle 5, and baffle 5 is with piping lane model pipe 9 by solid
Determine the fixation of nut 20, the centre of baffle 5 is equipped with baffle gasket 6, to keep the seal of baffle 5.In one end of piping lane model pipe 9
Square hole is arranged in top, and inlet well 13 is accordingly arranged, and the inlet well of the size of inlet well 13 and true piping lane model pipe is at certain
Ratio.Multistage is arranged in inlet well 13, and each subsection-inlet well 13 is arranged by flanged joint among 13 connecting flange of inlet well
Homogenizing plate 14, homogenizing plate 14 is one and is uniformly distributed very lacunary tablet, keeps the air-flow of inflow piping lane model pipe uniform.Upper
Connector is arranged in the top of portion's inlet well 13, which is communicated by air induction hose 12 and pressure reducing valve and dioxide bottle 15；
When the switch of opening dioxide bottle 15, and pressure reducing valve is adjusted, carbon dioxide gas can pass through air induction hose 12, inlet well
13, homogenizing plate 14 uniformly flows into piping lane model pipe 9.
Blast pit 7 is set in the tail end of piping lane model pipe 9, the size of the blast pit 7 also row with true piping lane model pipe
Gas well is proportional, and the top of blast pit 7 is arranged exhaust hose 8, exhaust hose 8 piping lane model pipe 9 can be discharged two
Carbon oxide gas is discharged in outside atmosphere.Carbon dioxide gas can equably flow in piping lane model pipe 9, and flow velocity is by two
The ventilation in piping lane model pipe is simulated in the control of the pressure reducing valve of carbonoxide gas cylinder 15.
Leak is bored in the middle part bottom surface of piping lane model pipe 9, leakage point syringe needle 18, leakage point syringe needle are inserted into leak
18 by tracheae, and connects nitrogen gas cylinder 16 via solenoid valve 17, can be with by adjusting the nitrogen pressure reducing valve on nitrogen gas cylinder 16
Control the pressure of gas leakage；When solenoid valve 17 is opened, nitrogen passes through pressure reducing valve, solenoid valve 17, tracheae from nitrogen gas cylinder 16
It is leaked into piping lane model pipe 9 with controllable speed with leakage point syringe needle 18.
It is equipped with multiple gas sampling holes 10 in the side of piping lane model pipe 9.Multiple gas sampling assemblies 21 are solid by screw
It is scheduled on front longitudinal beam 19, gas sampling assembly 21 is inserted into the gas sampling hole 10 of piping lane model pipe side, it can be achieved that this
Gas sampling at hole.Gas pressure and speed measurer 11 are set in the top surface of the piping lane model pipe 9, respectively described in measurement
The gas pressure and speed of the top surface of piping lane model pipe.
Fig. 2 is a kind of structural schematic diagram of gas sampling assembly 21 provided in an embodiment of the present invention.Gas sampling assembly 21
Pedestal 30 be fixed on front longitudinal beam 19 by right-angle connector 2, the bottom of fixing bracket 28 is screwed in pedestal 30
On, electromagnetism cylinder 27 is located at the top of fixing bracket 28, and electromagnetism cylinder 27 and fixing bracket 28 boosting bar 25 and are helped by screw connection
Push rod housing 26 is connect with electromagnetism cylinder 27, forms actuating mechanism.Plastics fixes sleeve 24 is sleeved in boosting bar 25, for blocking note
The piston core pin of emitter 22, syringe rack 23 are fixed on also by screw on pedestal 30, and the position of syringe rack 23 can root
It is adjusted flexibly according to the size of syringe 22.Syringe rack 23 supports syringe 22.
Fig. 3 is a kind of structural schematic diagram of leakage point syringe needle provided in an embodiment of the present invention.Nitrogen is let out through air induction hose 12
Leakage, leakage point syringe needle 18 are inserted in place in the leak 32 at the circular gasket 31 of 9 bottom of piping lane model pipe, leakage point syringe needle
18 along the horizontal plane rotation amplitude be ± 180 °.
When carrying out simulated experiment, the valve of manually opened dioxide bottle 15, make carbon dioxide through inlet well 13 into
Entering into piping lane model pipe 9, gives solenoid valve 17 transmission of control signals by computer, control solenoid valve 17 opens the leakage of nitrogen,
Nitrogen is set to be entered in piping lane model pipe 9 through leakage point syringe needle 18, gas pipeline lets out in simulation underground pipe gallery model pipe
Leak diffusion process.Carbon dioxide and nitrogen mixed gas are discharged via blast pit 7.Computer resets electric signal to data collecting card,
It controls the switch of electromagnetic relay and then is powered to electromagnetism cylinder 27, so that boosting bar 25 is travelled forward, by the piston core of syringe 22
Bar shifts bottom, the air of 22 the inside of emptying syringe onto.When starting gas production, computer transmits gas production electric signal, control to data collecting card
The commutation of electromagnetic relay processed is reversely powered to electromagnetism cylinder 27 in turn, and boosting bar 25 moves backward under the drive of electromagnetism cylinder 27,
The piston core pin for pulling syringe 22, makes the gaseous sample of different location enter syringe 22, completes the sampling operation of gas, so
It will manually be removed afterwards to the syringe 22 of each position, test, then change new syringe 22, carry out down to gaseous sample
Secondary sampling.
In this way, the concentration distribution after helium leak in piping lane model pipeline, different time changes in distribution rule can be with
It is come out by testing inspection, to simulate in situation after pipe gallery model pipe interior conduit gas leakage, and then is designed corresponding
Emergency measure, to improve pipe gallery model pipe safety have important application value.
In conclusion simulated experiment platform provided in an embodiment of the present invention may be implemented to underground pipe gallery model pipe inner tube
The simulation of road leakage situation, and pass through the gas of the automatic sampled leakage of gas sampling assembly.The structure of this simulated experiment platform is simple,
Economy is strong, semi-automatic control, easy to operate.It, can be safely especially for the simulation of underground pipe gallery gas leakage
In laboratory by test of many times, its regularity of distribution is found, lead in the design and piping lane to corresponding gas leakage detection device
The design of wind provides reliable parameter.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The component in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be located in one or more devices different from the present embodiment.On
The component for stating embodiment can be merged into a component, can also be further split into multiple subassemblies.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (9)
1. a kind of simulated experiment platform of the pipe leakage diffusion of underground pipe gallery model pipe, which is characterized in that including：Piping lane mould
Type pipe is made up of total body support frame of the piping lane model pipe crossbeam, front and back longeron and vertical beam, the one of the piping lane model pipe
Hold top that inlet well is set, the inlet well and dioxide bottle communicate；
In the tail end of the piping lane model pipe, blast pit, the carbon dioxide gas which the piping lane model pipe is discharged are set
Body is discharged in outside atmosphere；
Leak is bored in the middle part bottom surface of the piping lane model pipe, leakage point syringe needle is inserted into leak, leakage point syringe needle is logical
It crosses tracheae and connects nitrogen gas cylinder via solenoid valve；
Multiple gas sampling holes are equipped in the side of the piping lane model pipe, gas sampling assembly is screwed in piping lane mould
On the front longitudinal beam of type pipe, the gas sampling assembly is inserted into the gas sampling hole, to the gas at the gas sampling hole
It is sampled.
2. simulated experiment platform according to claim 1, which is characterized in that connect and compose institute by two crossbeams and two vertical beams
The side support of simulated experiment platform is stated, which constitutes the simulated experiment platform with a front longitudinal beam and two floor side members again
Total body support frame；The floor side member supports the piping lane model pipe, the front longitudinal beam to support gas sampling assembly.
3. simulated experiment platform according to claim 1, which is characterized in that the section of the piping lane model pipe is rectangle, institute
The main body for stating piping lane model pipe uses sectional design, junction to be connected using fixing nut, and is equipped with baffle pad in junction
Piece；The both sides of the piping lane model pipe are equipped with baffle, and baffle is fixed with piping lane model pipe by fixing nut, and the centre of baffle is equipped with
Baffle gasket.
4. simulated experiment platform according to claim 3, which is characterized in that be arranged on one end top of the piping lane model pipe
Square hole, and inlet well is set in square hole, multistage is arranged in the inlet well, and each subsection-inlet well is by flanged joint, in air inlet
Homogenizing plate is set among well connecting flange, connector is set on the top of the inlet well, which passes through air induction hose, pressure reducing valve
It is communicated with dioxide bottle, when the switch of opening dioxide bottle, and adjusts pressure reducing valve, carbon dioxide gas passes through air inlet
Hose, inlet well, homogenizing plate uniformly flow into piping lane model pipe.
5. simulated experiment platform according to claim 4, which is characterized in that exhaust is arranged in the tail end of the piping lane model pipe
Exhaust hose is arranged in the top of well, the blast pit, and the carbon dioxide gas that piping lane model pipe is discharged the exhaust hose is arranged
Into outside atmosphere.
6. simulated experiment platform according to claim 5, which is characterized in that bore and let out in the middle part bottom surface of the piping lane model pipe
Leakage hole is inserted into leakage point syringe needle in leak, and the leakage point syringe needle connects nitrogen gas cylinder by tracheae and via solenoid valve,
By adjusting the nitrogen pressure reducing valve on nitrogen gas cylinder, the pressure of gas leakage is controlled；When the solenoid valve is opened, nitrogen is from nitrogen
Gas bottle is leaked by pressure reducing valve, solenoid valve, tracheae and leakage point syringe needle in piping lane model pipe.
7. simulated experiment platform according to claim 6, which is characterized in that leakage point syringe needle rotation amplitude along the horizontal plane
It is ± 180 °.
8. simulated experiment platform according to claim 6, which is characterized in that be equipped in the side of the piping lane model pipe multiple
Gas sampling hole, multiple gas sampling assemblies are screwed on front longitudinal beam, and gas sampling assembly is inserted into piping lane model
In the gas sampling hole of pipe side, to the gas sampling at the hole.
9. simulated experiment platform according to claim 8, which is characterized in that the top surface of the piping lane model pipe is provided with gas
Body pressure and speed measurer measure the gas pressure and speed of the top surface of the piping lane model pipe.
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| CN109115454A (en) * | 2018-07-24 | 2019-01-01 | 北京交通大学 | The simulation experiment system of piping lane ventilating system safety detection |
| CN109556805A (en) * | 2019-01-21 | 2019-04-02 | 中国矿业大学(北京) | A kind of pipe gallery gas leakage diffusion experiment device |
| CN110410682A (en) * | 2019-08-01 | 2019-11-05 | 中冶京诚工程技术有限公司 | Pipe gallery fuel gas pipeline leakage diffusion modeling experiments platform under ventilation state |
| CN111257022A (en) * | 2020-01-16 | 2020-06-09 | 中国人民解放军陆军工程大学 | Gas explosion simulation test device and system in underground comprehensive pipe gallery space |
| CN112255187A (en) * | 2020-10-14 | 2021-01-22 | 合肥福瞳光电科技有限公司 | Ozone on-line measuring system |
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| CN112255187A (en) * | 2020-10-14 | 2021-01-22 | 合肥福瞳光电科技有限公司 | Ozone on-line measuring system |
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|---|---|
| CN108281078B (en) | 2019-09-27 |
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