CN202693574U - Simulation device for cellular materials to restrain gas explosion communication effect experiments - Google Patents
Simulation device for cellular materials to restrain gas explosion communication effect experiments Download PDFInfo
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- CN202693574U CN202693574U CN 201220394430 CN201220394430U CN202693574U CN 202693574 U CN202693574 U CN 202693574U CN 201220394430 CN201220394430 CN 201220394430 CN 201220394430 U CN201220394430 U CN 201220394430U CN 202693574 U CN202693574 U CN 202693574U
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Abstract
A simulation device for cellular materials to restrain gas explosion communication effect experiments relates to a pipeline experiment simulation device and meets requirements of cellular material for restraining gas explosion communication effect experiments. N joints of main pipelines of the simulation device are connected through N-1 flange disks to form an explosion wave communication pipeline, one end of the explosion wave communication pipeline is communicated with the opening end of an explosion initiation pipeline through a flange disk to form an experiment pipeline, the opening end of the explosion initiation pipeline or the opening end of one flange disk is sealed by an insulation layer, a temperature sensor installation hole and a pressure sensor installation hole are respectively arranged on the explosion initiation pipeline and the N joints of main pipelines, and a gas injection hole, a vacuum pump connection hole and an exploder are arranged on the explosion initiation pipeline. The simulation device is suitable for cellular materials to restrain gas explosion communication effect experiments.
Description
Technical field
The utility model relates to a kind of pipeline experimental simulation device.
Background technology
Research in and communication process theoretical to gas explosion is analyzed in conjunction with the Gas Explosion Accidents in Coal Mines case, can know that the major influence factors in the coal mine gas from explosion process is maximum pressure and the flame temperature in the during mine gas explosion and the communication process thereof that gas explosion is impacted, in the gas explosion communication process, shock wave pressure is the main cause that causes staff's death, destruction equipment and tunnel under the coal mine, explosive flame is serious calcination workman then, gas is exploded continuously also may cause the subsequent explosion of coal dust, be continuously the main inducing of blast.Therefore, just need definite porosint that the variation of pressure in the during mine gas explosion, the variation of flame temperature and the continuous propagation condition of flame are studied.At present, owing to lacking large aperture, high-quality experimental channel, it is lower that porosint suppresses the accurate end of result of gas explosion communication effect experiment acquisition.
The utility model content
The utility model is to suppress the demand of gas explosion communication effect experiment in order to adapt to porosint, thereby a kind of analogue means that suppresses the experiment of gas explosion communication effect for porosint is provided.
Be used for the analogue means that porosint suppresses the experiment of gas explosion communication effect, it comprises the pipeline that detonates of an end opening, trunk line, a N ring flange and the barrier layer of N joint both ends open; Be linked as a BP pipeline by N-1 ring flange between the described N joint trunk line, and an end of described BP pipeline is communicated with the formation experimental channel by a ring flange with the openend of the pipeline that detonates; Described barrier layer will the detonate openend of pipeline or an openend sealing on ring flange; Pipeline and the N joint that detonates all has a temperature sensor mounting hole and a pressure transducer mounting hole on the trunk line; Detonate and have injecting hole, vacuum pump connecting hole and initiator connecting hole on the pipeline; N is positive integer.
It also comprises rubber blanket, between the described N joint trunk line, BP pipeline and detonate and all adopt rubber seal between the pipeline.
It also comprises on the sidewall of experimental channel and has four ebullator mounting holes.
It also comprises vacuum meter, and described vacuum meter is arranged on the pipeline that detonates.
The utility model provides a kind of analogue means that suppresses the experiment of gas explosion communication effect for porosint, the porosint that can simulate as required diverse location suppresses the gas explosion communication effect, has satisfied porosint and has suppressed the demand that the gas explosion communication effect is tested.
Description of drawings
Fig. 1 is structural representation of the present utility model; Fig. 2 is injecting hole, vacuum pump connecting hole and the distribution schematic diagram of initiator connecting hole on the pipeline that detonates; Fig. 3 is the structural representation of the experimental provision of construction in the embodiment one.
Embodiment
Embodiment one, in conjunction with Fig. 1 this embodiment is described, is used for the analogue means that porosint suppresses the experiment of gas explosion communication effect, it comprises the pipeline 1 that detonates of an end opening, trunk line 2, a N ring flange 3 and the barrier layer of N joint both ends open; Be linked as a BP pipeline by N-1 ring flange 3 between the described N joint trunk line 2, and an end of described BP pipeline is communicated with the formation experimental channel by a ring flange with the openend of the pipeline 1 that detonates; Described barrier layer will the detonate openend of pipeline 1 or an openend sealing on ring flange 3; Pipeline 1 and the N joint that detonates all has a temperature sensor mounting hole 4 and a pressure transducer mounting hole 5 on the trunk line 2; Detonate and have injecting hole 6, vacuum pump connecting hole 7 and initiator connecting hole 8 on the pipeline 1; N is positive integer.
The experimental channel of present embodiment is the square experimental channel of large section 30cm * 30cm.
Characteristics of the present utility model: strong shock resistance, high-temperature resistance are strong; Has higher impermeability; Have good maneuverability and associativity; Experimental channel can need to offer the mounting hole of sufficient amount.
The gas distributing system that present embodiment adopts in experiment and firing system:
A, gas distributing system
Principle of design:
(1) the distribution process safety is quick;
(2) can configure as requested the gas air gas mixture of different volumes mark;
(3) distribution equipment convenient operation, equipment are easy to buy.
Scheme: this gas distributing system is comprised of 100% concentration methane gas steel cylinder, gas flow valve, sensing methane concentration device, explosion-proof ebullator and individual event reverse checkvalve.Its groundwork principle is: according to concentration requirement, calculate required methane volume fraction in the pipeline, utilize gas flow valve in experimental channel, to inject quantitative methane gas, then ON cycle pump, gas in the pipeline is circulated, close ebullator and reverse checkvalve when the gas concentration sensor registration after being positioned at the individual event reverse checkvalve all reaches certain value, test.Before beginning experiment, with in the gas injection flexible pipe, flow valve, ebullator may exist the volume in the residual space of methane gas to calculate, when gas injection in pipeline, revise, to reach accurately purpose.
B, firing system
Principle of design:
(1) ignition energy is greater than 0.28mJ;
(2) spark rate is greater than 10 times/s;
(3) stability is high, guarantees the igniting energy variation between ± 5%, and can continued power assurance experiment carry out continuously;
(4) safety coefficient is high, can guarantee operating personnel's safety.
Scheme: consider cost of equipment, easy to use and problem such as experiment sustainability etc., portfire finally is chosen to be the ignition that Nantong city Hua Da Electronics Factory produces, ignition energy is 60J, and spark rate is 10-15 time/s, adopts No. 5 AA1.5V of two joints to supply.
The test macro that present embodiment adopts in experiment:
Data acquisition and data are processed:
This experimental system is mainly carried out experimental study to gas explosion pressure, flame temperature and flame propagation effect, and these three kinds of signals all can be converted into voltage signal, therefore a sets of data acquisition system is all adopted in the collection of these three kinds of data-signals.
1, data acquisition system (DAS)
Principle of design:
(1) accurately rapid reaction goes out experimental data;
(2) there are data acquisition system (DAS) or capture card to gather a certain passage excitation data;
(3) can work continually and steadily, lower to hardware requirement, cost performance is high;
(4) supporting data processing tools resource is wide, easy operating.
Scheme: dynamic data collection system is four covers, for I choose configuration voluntarily according to the experiment demand.Formed by four in computer, four and eight conditioning module of four-way data collecting card respectively.Computer is the N720 of Founder Shangqi, and major parameter is as follows: processor is Duo E6700 dominant frequency 2.6Hz, and 2GDDR3 internal memory, hard disk are 500G.The model that data collecting card adopts Ling Hua science and technology in Taiwan to produce is PCI-9812, such as Fig. 3 .3, major parameter is as follows: 32 pci buss, plug and play, the highest 20MHz sample frequency of every passage, 8 single-ended synchronous input channels, 12 analog input resolution, 8 A/D converters, for each analog quantity channel provides a converter, on the plate with the FIFO of 32k word, bipolarity analog input scope, five kinds of A/D triggering modes: software triggering, front triggering, rear triggering, middle triggering trigger the sample frequency programmable with time-delay.
The first measuring point Trigger Function of data collecting card is adopted in this experiment, and data collecting card has 16 passages, and wherein a passage is acquisition channel and trigger port, begins data collection task by a passage triggering collection card.
2, data processing software
Principle of design:
(1) software can be tested the data collecting card of the Ling Hua PCI9812 that adopts by fully compatible this;
(2) software can long-time steady operation, and requires relatively low to computer hardware;
(3) strong for capture card image data recognition capability, sampling length and sampling time are long, and can discharge by software itself interference of certain outer bound pair experiment;
(4) software is processed easily data, is easy to the operation of data treatment people, and has certain extendability and exploitability.
Scheme: consider the factors such as software cost and the software compatibility and exploitability, the data processing software that this experiment is adopted is the data acquisition software Ling Hua science and technology AD-Logger supporting with Ling Hua PCI9812.Ling Hua science and technology AD-Logger is a instant software records device, and it is used for data acquisition abundant flexibly solution is provided.Can easily configure sampling condition and not need any programming by the interactive guide of Ling Hua science and technology DAQPilot.System needs only compatible Ling Hua science and technology DAQ equipment and AD-Logger has been installed, and gets final product the function of OnNow data acquisition and demonstration.Principal feature is as follows: based on the data recording of DAQPilot task configuration; Support in real time and historical data is checked; Support instant available intuitive user interface; Supported data export function, and be used for third party application, comprise Microsoft Excel,
DIADem and MathWorks
Off-line analysis.Utilize Ling Hua science and technology AD-Loggert software easily to set up 16 channel data acquisition scheme in every cover acquisition system, finish the basic programing work to pressure and flame temperature collection.
The pressure acquisition system that present embodiment adopts in experiment:
Principle of design:
(1) response time short, strong for pressure sensitivity;
(2) the pressure transducer range is greater than gas explosion maximum pressure value 10%;
(3) easy to connect, supporting signal condition and signal amplifying apparatus are easy to buy;
(4) sensor is durable, and is anticorrosive, strong shock resistance, and the external environment impact is little.
Scheme: owing to considering the purchase situation of pressure transducer range and support equipment thereof, the final pressure testing system that adopts of this experimental system is comprised of pressure transducer and sensor conditioning module.Used sensor is that U.S. Dytarn company produces, model is 2300V1, range is that 250psi(annotates: 1psi=1 pound/inch=6894.76 handkerchiefs, 250psi closes 1.723625MPa), calibration is 20mV/psi, 10-32 top connector has the acceleration compensation function, and the sensor response time is Millisecond.The single channel conditioning module is that U.S.'s Dytran pressure transducer forms a complete production network, and model is that Electronics Signal Conditioners-4110C important technological parameters is: external power source, outer bound pair the influence of peak current is effectively filtered in the 2-20mA conditioning.
The flame temperature acquisition system that present embodiment adopts in experiment:
Principle of design:
(1) responsive for temperature variation, the response time is Millisecond;
(2) the temperature sensor range is greater than 2300 ℃;
(3) sensor resistance impact capacity is strong, can resist the calcination that gas explosion produces flame;
(4) gas and other impacts that produce for gas explosion have certain elimination ability, and sensor is reusable.
Scheme: flame sensor is that U.S. NANMAC company produces, model is E12-1-C-U, important technological parameters is as follows: range 0-2300 ℃, response time reaches Microsecond grade, thermocouple junction places on the probe end face, can be processed into any shape, weather in the measuring process or wearing and tearing can be upgraded its thermocouple junction automatically
Can measure inner wall surface (hot joining ground thermopair) or the two kinds of indoor non-hot joining of different temperature ground thermopairs.Thermopair outer protection material is stainless steel, has special jointing, connecting line and hold-down nut.
The flame propagation phenomenon recording geometry that present embodiment adopts in experiment:
Principle of design:
(1) response time short, can the Quick Catch flare up fire;
(2) has higher antijamming capability, the interference that effectively avoid shaking, electromagnetism produces;
(3) in the situation that low flame illumination is lower also can collect flare up fire.
Design proposal: according to above-mentioned requirements, this experimental system intends adopting high-speed camera as the optical viewer of flame propagation phenomenon.The high-speed camera function is in the situation that the lower flame transmission situation that collects of illumination has effectively been avoided other interference.
Experimental program:
1, blank pipe experimental program
The square experimental channel of 30cm * 30cm that utilizes designed, designed to make carries out the gas explosion experimental study, and in order to verify the effect that intercepts quick-fried device, this paper selects 7.68% gas explosion concentration, and has designed experimental program:
Full pipe fills the gas mixed gas, head-end ignition, and back-end closure, this programme can simulate that local tunnel all is full of gas explosion gas in the mine, and the drift section major part is jammed or during mine gas explosion under air door and the barrier existence condition such as airtight is arranged.
The conceptual design fundamental purpose is to carry out the propagation law research of during mine gas explosion, and the foundation of contrast also is provided for the experimental study that intercepts quick-fried technology simultaneously.
2, gas intercepts quick-fried experimental program
The square experimental channel of 30cm * 30cm that utilizes designed, designed to make carries out porosint to the experimental study of gas explosion propagation effect rule.
Utilize fixed mount to install porosint at pipeline 3.5m place.Select 7.68% gas explosion concentration conditions, full pipe fills the gas mixed gas, inserts porosint at the fixed mount of pipeline, head-end ignition, and back-end closure according to the parameter of porosint, utilizes orthogonal experiment method to determine explosion arrestment experimental group number and order.
This programme can be simulated the interior tunnel, local restricted space of mine and all is full of gas explosion gas, intercept the gas mixed gas encirclement that quick-fried device is reached explosion limit, one end points fire is blasted by intercepting quick-fried device to an other side propagation condition, the effect of test porosint extinguishing flame and attenuating shock wave.
The layout of sensor
Be equipped with altogether 8 groups of 16 sensors and carry out experiment test, every pipe joint road is furnished with 2 groups 4 in installation of sensors hole, and the placement sensor mounting hole is 1 group 2 on the air chamber that detonates, and design parameter is as shown in table 1 below:
Table 1:
Designed, designed is built experimental provision as shown in Figure 3.Its acceptance of the bid 1-1 is that computing machine, 1-2 are data acquisition system (DAS); 1-3 is explosion-proof ebullator; 1-4 is pressure transducer; 1-5 is temperature sensor; 1-6 is light sensor; 1-7 is firing system; 1-8 is inlet non return check valve; 1-9 is gas concentration sensor; 1-10 is injecting hole.
The described difference that suppresses the analogue means of gas explosion communication effect experiment for porosint of embodiment two, this embodiment and embodiment one is, it also comprises rubber blanket, between the described N joint trunk line 2, BP pipeline and detonate and all adopt rubber seal between the pipeline 1.
Embodiment three, this embodiment and embodiment one or the two described differences that suppress the analogue means of gas explosion communication effect experiment for porosint are, it also comprises on the sidewall of experimental channel and has four ebullator mounting holes.
The described difference that suppresses the analogue means of gas explosion communication effect experiment for porosint of embodiment four, this embodiment and embodiment three is, it also comprises vacuum meter 11, and described vacuum meter 11 is arranged on the pipeline 1 that detonates.
Embodiment five, this embodiment and embodiment one, the two or four described differences that suppress the analogue means of gas explosion communication effect experiment for porosint are, barrier layer is kraft.
The described difference that suppresses the analogue means of gas explosion communication effect experiment for porosint of embodiment six, this embodiment and embodiment five is N=4.
Embodiment seven, this embodiment and embodiment one, two, the four or six described differences that suppress the analogue means of gas explosion communication effect experiment for porosint are, it is 1.55 meters pipeline that every joint trunk line 2 is length.
The described difference that suppresses the analogue means of gas explosion communication effect experiment for porosint of embodiment eight, this embodiment and embodiment seven is, the pipeline 1 that detonates is 0.3 meter pipeline for length.
In the present embodiment, experimental channel is comprised of four joint trunk lines and the air chamber that detonates, and length is respectively 1.55m and 0.3m, and total length is 6.5m.Per two joints are connected in the flange mode by 16 bolts, and the centre accompanies the rubber blanket of 1cm to improve the leakproofness of pipeline.Top, every pipe joint road all is provided with each two of pressure transducer and temperature sensor installing ports, and wherein there is a valve No. four pipeline bottoms for detecting valve.The air chamber that detonates is equipped with each one of temperature sensor and pressure transducer installing port, and other is equipped with one of vacuum meter, each one of gas injection port, vacuum pump connector, initiator connector.
Claims (8)
1. be used for the analogue means that porosint suppresses the experiment of gas explosion communication effect, it is characterized in that: it comprises the pipeline that detonates (1) of an end opening, trunk line (2), a N ring flange (3) and the barrier layer of N joint both ends open; Be linked as a BP pipeline by N-1 ring flange (3) between the described N joint trunk line (2), and an end of described BP pipeline is communicated with the formation experimental channel by a ring flange with the openend of the pipeline that detonates (1); The openend sealing on the openend of pipeline (1) or the ring flange (3) of will detonating of described barrier layer; Detonate and all have a temperature sensor mounting hole (4) and a pressure transducer mounting hole (5) on pipeline (1) and N joint trunk line (2); Detonate and have injecting hole (6), vacuum pump connecting hole (7) and initiator connecting hole (8) on the pipeline (1); N is positive integer.
2. the analogue means that suppresses the experiment of gas explosion communication effect for porosint according to claim 1, it is characterized in that it also comprises rubber blanket, between the described N joint trunk line (2), all adopt rubber seal between BP pipeline and the pipeline that detonates (1).
3. the analogue means that suppresses the experiment of gas explosion communication effect for porosint according to claim 1 and 2 is characterized in that having four ebullator mounting holes on the sidewall of experimental channel.
4. the analogue means that suppresses the experiment of gas explosion communication effect for porosint according to claim 3 is characterized in that it also comprises vacuum meter (11), and described vacuum meter (11) is arranged on the pipeline that detonates (1).
5. according to claim 1, the 2 or 4 described analogue means that suppress the experiment of gas explosion communication effect for porosint, it is characterized in that barrier layer is kraft.
6. the analogue means that suppresses the experiment of gas explosion communication effect for porosint according to claim 5 is characterized in that N=4.
7. according to claim 1,2, the 4 or 6 described analogue means that suppress the experiment of gas explosion communication effect for porosint, it is characterized in that it is 1.55 meters pipeline that every joint trunk line (2) is length.
8. the analogue means that suppresses the experiment of gas explosion communication effect for porosint according to claim 7, the pipeline (1) that it is characterized in that detonating are 0.3 meter pipeline for length.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104267171A (en) * | 2014-10-09 | 2015-01-07 | 西安近代化学研究所 | Environment simulation device for evaluating explosive blast wave performance of non-ideal explosive |
| CN104990958A (en) * | 2015-07-22 | 2015-10-21 | 南京工业大学 | Multiple explosion suppression effect test system of communicating vessel |
| CN105160983A (en) * | 2015-10-22 | 2015-12-16 | 中国矿业大学(北京) | Coal-mine gas disaster wind current monitor simulation and demonstration system |
| CN106198086A (en) * | 2016-08-24 | 2016-12-07 | 安徽理工大学 | A kind of experimental system of coal mine gas from explosion baffling device |
| CN109991277A (en) * | 2019-04-28 | 2019-07-09 | 河南理工大学 | A kind of turbulent flow premixed gas pipe explosion experiment test device and method |
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2012
- 2012-08-09 CN CN 201220394430 patent/CN202693574U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267171A (en) * | 2014-10-09 | 2015-01-07 | 西安近代化学研究所 | Environment simulation device for evaluating explosive blast wave performance of non-ideal explosive |
| CN104267171B (en) * | 2014-10-09 | 2016-03-02 | 西安近代化学研究所 | A kind of non-ideal constraint explosion wave Performance Evaluation environment simulator |
| CN104990958A (en) * | 2015-07-22 | 2015-10-21 | 南京工业大学 | Multiple explosion suppression effect test system of communicating vessel |
| CN104990958B (en) * | 2015-07-22 | 2018-07-03 | 南京工业大学 | Multiple explosion suppression experimental apparatus and test system for communicating container |
| CN105160983A (en) * | 2015-10-22 | 2015-12-16 | 中国矿业大学(北京) | Coal-mine gas disaster wind current monitor simulation and demonstration system |
| CN106198086A (en) * | 2016-08-24 | 2016-12-07 | 安徽理工大学 | A kind of experimental system of coal mine gas from explosion baffling device |
| CN109991277A (en) * | 2019-04-28 | 2019-07-09 | 河南理工大学 | A kind of turbulent flow premixed gas pipe explosion experiment test device and method |
| CN109991277B (en) * | 2019-04-28 | 2021-07-27 | 河南理工大学 | Turbulent premixed gas pipeline explosion experiment testing device and method |
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