CN112082728A - Testing device for disturbance of dust explosion to mine ventilation state - Google Patents
Testing device for disturbance of dust explosion to mine ventilation state Download PDFInfo
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Abstract
The invention discloses a test device for disturbing a mine ventilation state by dust explosion, which comprises a dust explosion simulation system, a dust explosion simulation system and a dust explosion simulation system, wherein the dust explosion simulation system is used for simulating the generation of dust explosion in a mine and providing airflow generated by the dust explosion for an experiment; the rotatable roadway simulation system is connected with the dust explosion simulation system and is used for simulating a corresponding roadway influenced by dust explosion in a mine; and the parameter detection system is arranged on the rotatable tunnel simulation system and used for collecting pressure, temperature and gas flow data of the rotatable tunnel simulation system during dust explosion and measuring and calculating the influence of the dust explosion on the evolution process of the ventilation system in the well. The test device for the disturbance of the dust explosion on the mine ventilation state can obtain more comprehensive test conditions and more accurate test data, is simple and convenient to operate and lower in cost, the pressure which can be borne by the device is greatly improved due to the exclusive spherical design, the shape application range of the sensor and the simulation roadway is wider, and the obtained data is more accurate and comprehensive.
Description
Technical Field
The invention belongs to the technical field of coal mine experimental devices, and particularly relates to a test device for disturbance of dust explosion on a mine ventilation state.
Background
Mine ventilation is a life line for coal mine safety production, and mine ventilation design is an important component of the whole mine design content and is an important ring for ensuring safety production. The ventilation effect is as follows: the first is to supply enough fresh air to the underground personnel to meet the breathing requirement of the personnel; secondly, diluting and removing underground toxic gas and dust, ensuring that workers are not poisoned and keeping the cleanliness of air to prevent gas and coal dust explosion accidents; thirdly, heat and water vapor under the well are diluted and removed, proper climatic conditions are created, and the working environment of workers is improved. Therefore, mine ventilation has very important significance in measures for ensuring personal safety and mine safety production. Therefore, the ventilation safety of the mine is particularly important. Dust explosion is one of common disasters in mines, and besides the destructive effect directly generated by energy released by the dust explosion, shock waves generated by the dust explosion can influence the stable ventilation state of a roadway, so that local wind current disorder of a ventilation system is caused, secondary accidents are easily caused, and the safety production of the mines is seriously threatened. The influence of dust explosion on mine ventilation needs to be simulated by means of a special test environment, the propagation rule of dust explosion shock waves in a roadway and the change of wind flow in a communication roadway during stable ventilation are researched, and favorable reference is provided for mine dust explosion suppression and explosion suppression.
At present, the research on mine ventilation is increasingly going towards "triple", namely ventilation design automation, ventilation management modernization and ventilation analog-to-digital. Over the last century, the research of ventilation networks by various national scholars has achieved fruitful results, and a lot of analysis methods and a lot of network research software are developed. The development of digitization and accuracy urgently needs extremely accurate data, and when the first-hand data is inaccurate or incomplete, the influence of dust explosion on the ventilation network cannot be reflected perfectly by a perfect analysis method and research software.
In the prior art, a patent with publication number CN 106971650 a discloses a dust explosion demonstration device, which comprises a base, a bottle stopper and a power supply, wherein the bottle stopper is provided with an outlet pipe, an air inlet pipe, an igniter and a dust container, the air outlet pipe is connected with a fan and the dust container, and the igniter is arranged above the dust container; the bottle stopper and the fan are fixed on the base, the fan and the igniter are electrically connected with the control module, the control module is further connected with a timing module and a key, and the power supply supplies power to the whole system. The connecting part of the air inlet pipe and the dust container is also fixed with a filter screen. The dust explosion demonstration instrument is scientific in design, can intuitively demonstrate the dust explosion process, is convenient to use, is safe and reliable, and is a good research type experimental instrument. The technical scheme has the following defects: the device uses a glass bottle, the experimental phenomenon is easy to observe, but no cooling device is used, the safety is poor, and the range of the dust explosion testing area in the experimental process is small; temperature, pressure and gas flow sensors are not installed, the experiment can be observed only by macroscopical observation, and the experiment cannot be explained by data.
The patent with publication number CN 111223380A discloses a dust explosion demonstration device and a method thereof, wherein the demonstration device comprises a transparent box body, an explosion propagation pipeline and an electrostatic spark generation unit; the explosion propagation pipeline is a transparent material pipeline, and further comprises a main pipeline and a first branch pipeline and a second branch pipeline which extend towards two sides of the main pipeline, the explosion propagation pipeline is arranged inside the transparent box body, a partition plate is arranged in the transparent box body and fixed to the explosion propagation pipeline, the electrostatic spark generation unit is arranged on the main pipeline, an inlet of the main pipeline is connected with the transparent box body, an air inlet is formed in the transparent box body, an explosion venting port is formed in the upper portion of the transparent box body, and an explosion venting door is arranged on the explosion venting port. The device provided by the invention can intuitively and clearly simulate and observe dust explosion in the ventilation pipeline, and has a simple and safe structure. The technical scheme has the following defects: the explosion venting port of the device is arranged above the tunnel and cannot well simulate the flow of tunnel airflow, the experimental pressure limit of the pipeline is far from meeting the requirement of tunnel pressure during explosion due to the design of the pipeline, and the device can only be used for demonstration and research of dust explosion and cannot be used for researching the disturbance of the dust explosion on a tunnel ventilation system.
The patent with the publication number of CN 104778893B discloses a dust explosion experimental device, relates to the technical field of experimental teaching aid manufacturing, including jar mouth department be equipped with the jar body of lid and establish jar internal with the dust container of inflater intercommunication, in the nearly section of thick bamboo wall department of internal bottom of jar is equipped with a baffle, the baffle with the inner wall of the jar body encloses synthetically the dust container, the jar body in combustion vessel has been placed to one side of dust container. Compared with the prior art, the invention can solve the problem of low success rate of the existing dust explosion experiment. The technical scheme has the following defects: the device uses the inflater to make the dust diffuse in the container, can't accomplish to make the dust evenly diffuse, and there is certain danger in the method of burning ignition, and this experimental apparatus security is too low.
The patent with publication number CN 204706266U discloses a dust explosion demonstration experimental apparatus, including a toughened glass section of thick bamboo, flourishing ware, gas blow pipe, spring injector, wire, discharge electrode rubber band, plastic film, high-voltage coil, characterized in that: powder container is fixed to be set up in toughened glass section of thick bamboo bottom center, the gas blow pipe that toughened glass section of thick bamboo wall is passed in spring injector gas outlet intercommunication, two discharge electrode symmetries are fixed to be set up in toughened glass section of thick bamboo middle part, plastic film seals toughened glass section of thick bamboo upper oral area with the rubber band, a discharge electrode is connected to high-voltage coil end, the other end is connected to another discharge electrode through setting up two disconnected sheetmetals in the top in spring injector, the fixed sheetmetal that is provided with in syringe piston top, this sheetmetal can contact simultaneously with two disconnected sheetmetals in the top in the spring injector when the spring injector is withstand to the piston most front end, the gas blow pipe mouth of pipe is just down to powder container center and is 30 ~ 40mm apart from powder container bottom distance. The technical scheme has the following defects: the toughened glass shell that adopts does benefit to the observation to the experimental phenomenon, but has also decided the experiment pressure range certainly to littleer simultaneously to adopt the film closing cap to seal, can't accomplish absolutely tightly, also can be great to the error of experimental result, provide power for the even diffusion of dust with the spring injector and have the limitation.
The existing experimental device generally has great limitations and has the following disadvantages:
1. the requirement of explosion pressure required by experiments cannot be met, and the pressure bearing range of the existing experimental equipment is small;
2. the sealing condition of the experiment is not complete, larger errors can be caused by external environment change and the like, and the experimental phenomenon is not easy to observe;
3. the influence test research of dust explosion on the roadway network cannot be carried out;
4. the simulation of the roadway network under different inclination angles cannot be carried out;
5. the safety performance of the experimental device needs to be improved, and the safety of the experiment can not be ensured without a forced shutdown system.
Disclosure of Invention
Based on the defects of the prior art, the technical problem to be solved by the invention is to provide the test device for the disturbance of the dust explosion on the mine ventilation state, the test device is simple and convenient to operate and low in cost, relevant laws of underground disaster accidents caused by the fact that the air pressure suddenly changes generated by the coal dust explosion further damages and disturbs the normal wind flow direction are researched, and the obtained data are more accurate and comprehensive.
In order to solve the technical problems, the invention is realized by the following technical scheme: the invention provides a test device for disturbing a mine ventilation state by dust explosion, which comprises a dust explosion simulation system, a dust explosion simulation system and a dust explosion simulation system, wherein the dust explosion simulation system is used for simulating the generation of dust explosion in a mine and providing airflow generated by the dust explosion for an experiment; the rotatable roadway simulation system is connected with the dust explosion simulation system and is used for simulating a corresponding roadway influenced by dust explosion in a mine; and the parameter detection system is arranged on the rotatable tunnel simulation system and used for collecting pressure, temperature and gas flow data of the rotatable tunnel simulation system during dust explosion and measuring and calculating the influence of the dust explosion on the evolution process of the ventilation system in the well.
Optionally, the dust explosion simulation system comprises a spherical pressure container, a gas storage tank located at the bottom of the spherical pressure container, an ignition coil located inside the spherical pressure container, and a dust containing tray facing a gas outlet of the gas storage tank and used for containing dust; after the ignition coil is heated, an exhaust electromagnetic valve on the gas storage tank is opened, dust on the dust containing tray is sprayed into the spherical pressure container, and the dust is exploded when encountering the heated ignition coil.
Furthermore, the spherical pressure container is of a double-layer structure, and circulating water is communicated between the two layers for cooling.
Optionally, a protective shell is arranged outside the spherical pressure container, and a vent hole communicated with the rotatable roadway simulation system is formed in one end, facing the explosion venting port of the spherical pressure container, of the protective shell.
Optionally, a power control switch, a delayed ignition display and a pressure signal output switch are arranged below the spherical pressure container in the protective shell.
Furthermore, the rotatable roadway simulation system comprises an flaring connection pipe connected with the dust explosion simulation system, a straight pipe with an arched cross section communicated with the flaring connection pipe, a four-way cross joint connected with the straight pipe, and a plurality of straight pipes with an arched cross section connected with the four-way cross joint, wherein the straight pipes are connected with one another through the four-way cross joint, and the straight pipes are connected into a whole to form a roadway ventilation network; one end of one of the four-way cross joints is connected with a mine ventilator for ventilating a roadway ventilation network; and one end of the tunnel ventilation network, which is far away from the dust explosion simulation system, is connected with a rotary driving device for driving the tunnel ventilation network to rotate.
Optionally, an outer ring and an inner ring coaxial with the outer ring are arranged at the through hole of the four-way cross joint, and a ball is arranged between the outer ring and the inner ring; an arch-shaped road junction used for connecting the straight pipe is reserved on the inner ring, and the road junction reserved by the four-way cross joint can be sealed by a blind plate when not used.
Furthermore, the rotation driving device comprises a support frame, a motor fixed on the support frame, a speed reducer connected with the motor, and a transmission beam connected with a transmission shaft of the speed reducer, wherein the transmission beam is connected with the roadway ventilation network.
Optionally, the parameter detection system includes a pressure sensor, a temperature sensor and a gas flow sensor installed at different positions in a straight pipe for simulating a roadway.
Further, the air storage tank is connected with an air compressor located outside the spherical pressure container, and the air compressor charges high-pressure air into the air storage tank.
Therefore, the method mainly aims to comprehensively and accurately measure and calculate the influence of dust explosion in the mine on the disaster evolution process of the ventilation system in the mine, and researches the related law of underground disaster accidents caused by the sudden change of air pressure generated by the dust explosion so as to destroy and disturb the normal wind flow direction in order to simulate the condition of the dust explosion in the mine. The test device for the disturbance of the dust explosion on the mine ventilation state can obtain more comprehensive test conditions and more accurate test data, is simple and convenient to operate and lower in cost, the pressure born by the device can be greatly improved due to the exclusive spherical design, the shape application range of the sensor and the simulation roadway is wider, and the obtained data are more accurate and comprehensive.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a test device for disturbance of a dust explosion on a mine ventilation state according to the invention;
FIG. 2 is a top view of the test apparatus of the invention for dust explosion disturbance of mine ventilation conditions;
FIG. 3 is a schematic structural diagram of a dust explosion simulation system of the test device for disturbance of dust explosion on mine ventilation state according to the present invention;
FIG. 4 is a schematic structural diagram of a rotatable roadway simulation system of the test device for dust explosion to mine ventilation state disturbance of the invention;
fig. 5 is a schematic layout of a parameter detection system of the test device for the disturbance of the dust explosion on the ventilation state of the mine.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of this specification, and which illustrate, by way of example, the principles of the invention. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
As shown in fig. 1 to 5, the testing device for dust explosion to mine ventilation state disturbance of the present invention mainly comprises three systems, which are a dust explosion simulation system, a rotatable roadway simulation system and a parameter detection system, wherein the dust explosion simulation system is used for simulating generation of dust explosion in a mine, and mainly comprises: the spherical pressure vessel 13, the igniter, the base, the console and the like. The rotatable tunnel simulation system mainly comprises: the device comprises an arched straight pipe 32, a visual window, a four-way cross joint 33, a flange plate, a ventilator and the like. The parameter detection system mainly comprises a pressure sensor, a gas flow sensor, a temperature sensor, a signal transmitter, a signal processor and the like.
The spherical pressure vessel 13 of the invention is of a double-layer protection structure and comprises a jacket outer layer 18 and a jacket inner layer 19, wherein a circulating water inlet 16 and a circulating water outlet 17 are formed on the jacket outer layer 18, so that circulating water can be added into the interlayer for cooling. The spherical pressure vessel 13 is also provided with a viewing port 22. The bottom of the spherical pressure container 13 is provided with a gas storage tank 1, an ignition coil 8 is arranged in the spherical pressure container 13, the bottom of the spherical pressure container 13 is also provided with a dust containing tray 15 for containing dust, and a gas outlet of the gas storage tank 1 faces the dust containing tray 15. A protective shell 11 is arranged outside the spherical pressure container 13, and a vent hole 10 communicated with a rotatable roadway simulation system is arranged at one end of the protective shell 11, which faces the explosion venting port 9 of the spherical pressure container 13. The base 2 is arranged below the spherical pressure container, and a power supply control switch 3, a pressure signal output switch 4, a delay ignition display 5, a powder spraying detonator 6 and an emergency stop button 7 are arranged on the protective shell 11 and close to the bottom of the protective shell. The spherical pressure container 13 is also provided with a pressure sensor 12 and a pressure instrument 14, and the dust containing tray 15 is provided with a dispersion valve 20. The air storage tank 1 is connected with an air compressor 21 positioned outside the spherical pressure container 13, and the air compressor 21 fills the air storage tank 1 with high-pressure air.
The spherical pressure container 13 is designed into two layers, and a water cooling method is adopted between the layers, so that the risk of the experiment is reduced. And an observation port 22 is provided right in front of the spherical pressure vessel 13, so that the phenomenon of dust explosion can be directly observed. The explosion venting port 9 of the spherical pressure container 13 is connected with a simulation roadway network through an expansion connecting pipe, and data acquisition is carried out by utilizing pressure, temperature and gas flow sensors arranged at different positions in the roadway. The roadway network can be rotated to simulate the roadway conditions with different inclination angles. The experimental device can reduce the field condition that mine dust explosion influences mine steady-state ventilation, has the advantages of variable forms, various collected signal data, humanized operation, safety and reliability, and provides effective and reliable experimental conditions for researching disturbance of the dust explosion on a mine steady-state ventilation network.
The rotatable roadway simulation system is used for simulating a corresponding roadway which generates dust explosion or is influenced by the dust explosion in a mine, and specifically comprises a flaring connection pipe 31 connected with a vent hole 10 of the dust explosion simulation system, an arch-shaped straight pipe 32 communicated with the flaring connection pipe 31, a four-way cross joint 33 connected with the arch-shaped straight pipe 32, and a plurality of arch-shaped straight pipes 32 connected with the four-way cross joint 33, wherein the arch-shaped straight pipes 32 are mutually connected through the four-way cross joint 33, and the arch-shaped straight pipes 32 are connected into a whole to form a roadway ventilation network. The straight arcuate tube 32 is arcuate in cross-section to simulate an arcuate tunnel. And a visualization window 38 is connected to the straight dome tube 32 by a fixing bolt 39.
The novel tunnel junction is characterized in that an outer ring 33-1 and an inner ring coaxial with the outer ring 33-1 are arranged at a through hole of the four-way cross joint 33, balls 33-2 are installed between the outer ring 33-1 and the inner ring, an arch-shaped tunnel junction 33-3 used for connecting the arch-shaped straight pipe 32 is reserved on the inner ring, and the reserved tunnel junction of the four-way cross joint can be sealed by a blind plate when not used. The four-way cross joint 33 is also provided with a flange connection reserved screw hole 33-5 for connecting the arched straight pipe 32. The straight dome tube 32 and the four-way cross joint are rotatably connected by the above-described bearing structure.
One end of one of the four-way cross joints 33 is connected with a mine ventilator 41 for ventilating the roadway ventilation network. One end of the tunnel ventilation network, which is far away from the dust explosion simulation system, is connected with a rotation driving device for driving the tunnel ventilation network to rotate.
Specifically, the rotation driving device 36 is composed of a support frame 45, a motor 43, a coupling, a dynamic reading disc 40, a fixing bolt 44, a bearing seat, a transmission shaft, a chain wheel coupling, a speed reducer 42 and the like, wherein the motor 43 is fixed on the support frame 45, the speed reducer 42 is connected with the motor 43, the transmission shaft of the speed reducer 42 is connected with a transmission beam 37, and the transmission beam 37 is connected with the roadway ventilation network.
The rotatable roadway simulation system adopts steel plates as materials, the roadway is in a semicircular arch shape conforming to the existing mine roadway, each section is connected through a four-way cross joint 33, in order to ensure that when the whole roadway network has a certain inclination angle, the roadway section keeps positive (consistent with the mine reality, namely, an arch roadway opening 33-3 is always vertically upward and does not incline), and each connecting surface of the four-way cross joint 33 and an arch straight pipe 32 is arranged into a bearing structure. The four-way cross joint 33 is connected with the dust explosion device, the mine ventilator 41 and the tunnel ventilation network by adopting special flaring connection pipes, the tunnel is designed to be rotatable, so that the situations of tunnels with different inclination angles can be simulated, and a visual window 38 is arranged on each section of the arched straight pipe 32 for simulating the tunnel and is used for observing the internal situations of the tunnel.
The parameter detection system mainly comprises three parts, namely a pressure sensor, a temperature sensor and a gas flow sensor, wherein the sensors are arranged on the section of a simulation roadway to be subjected to parameter monitoring according to the positions in a graph 5: the first sensor 47 is arranged on the upper side wall of the simulation roadway (can be a pressure, temperature or gas flow sensor, and is optional according to actual research requirements, the same applies below); no. two sensors 48 set up the central point in simulation tunnel, and No. three sensor 49 sets up the lower part lateral wall in simulation tunnel, and No. four sensor 50 sets up the top in simulation tunnel.
The test method of the device for testing the disturbance of the dust explosion to the mine steady-state ventilation network comprises the following steps: (1) assembling a semi-circular arch steel plate roadway; (2) installing pressure, temperature and gas flow sensors; (3) carrying out an experiment; (4) data was recorded to end the test.
Assembling a roadway ventilation network: the roadway body is composed of an arched straight pipe 32 and a four-way cross joint 33, flange connection is adopted, six (can be increased or decreased according to requirements) four-way cross joints 33 can be arranged to connect all parts of pipelines into a whole, three rows of pipelines which are horizontally arranged (can be increased or decreased according to requirements) are combined, in order to enable the adaptability of the device to be better, a rotation driving device 36 is designed, the rotation driving device is connected with the pipelines through a transmission beam 37, and the whole roadway ventilation network is designed to be capable of rotating a certain angle so as to meet the requirements of different inclination angle simulation. A sight window 38 is provided in each segment of the straight arch tube 32 for observing the condition of the two-phase dust-flue gas flow. The tail part of the upper simulation roadway is connected with a vacuum pump through a vacuum pump connecting port 34, the left end of the upper simulation roadway is connected with a dust explosion simulation system through a special connecting pipe, and the tail part of the lower simulation roadway is connected with a mine ventilator 41 used for ventilating the system through a connecting pipe.
Pressure, temperature and gas flow sensor arrangement: two parallel pipes and a connected longitudinal pipe of the roadway simulation system are respectively provided with a measuring section, each measuring section is internally provided with a corresponding pressure sensor, a corresponding temperature sensor and a corresponding gas flow sensor according to the positions shown in figure 5, all the sensors are connected with a computer through connecting wires, and collected data are transmitted to the computer system.
Dust explosion test principle: the high-pressure air uniformly disperses the dust in the spherical pressure container, and the electric igniter ignites the dust to detonate the dust. The method specifically comprises the following steps:
1. preparing a dust sample: selecting about 100g of a coal dust sample to be tested, and drying the coal dust sample for 1 hour by using a constant-temperature drying oven, wherein the temperature is set to be 105 ℃;
2. connecting the air compressor 21 with an air pipe for an experimental device;
3. starting the air compressor 21;
4. weighing about 10g of samples, and uniformly placing the samples on a dust containing tray 15 at the bottom of the spherical pressure container; sealing the tank body and closing the protective shell 11; starting the exhaust electromagnetic valve 30, observing the reading of the pressure instrument 14, and carrying out an experiment when the pressure is generally 0.4-0.6 MPa;
5. and pressing the powder spraying detonator 6 to finish ignition and detonation.
The invention adopts a delayed detonation design, after a power control switch 3 is pressed, a delayed ignition display 5 starts to count down (the delay time is not suitable to be less than 10s), an ignition coil 8 starts to heat, and when the time is up, an exhaust electromagnetic valve 30 of an air storage tank 1 is opened, dust on a dust containing tray 15 is sprayed into a tank body, and explosion is initiated when the ignition coil 8 which is heated encounters. At the moment, the occurrence of dust explosion in a mine can be simulated, explosion shock waves and high-pressure gas enter a roadway simulation system through a connecting pipe, and the disturbance of the pressure generated by the dust explosion on a mine steady-state ventilation network can be obtained through data acquisition of corresponding sensors and observation of a high-definition camera, so that the aim of the experiment and the significance of the experiment are achieved.
When the data of each sensor collected by the computer is stable, the experiment is finished after a plurality of systems are stable.
In addition, the invention can also adopt a square straight pipe to replace an arched straight pipe, and correspondingly, a square roadway opening 33-4 is reserved on the four-way cross joint so as to connect all the square straight pipes to form a roadway ventilation network.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. A test device for dust explosion to mine ventilation state disturbance is characterized by comprising:
the dust explosion simulation system is used for simulating the generation of dust explosion in a mine and providing airflow generated by the dust explosion for an experiment;
the rotatable roadway simulation system is connected with the dust explosion simulation system and is used for simulating a corresponding roadway influenced by dust explosion in a mine;
and the parameter detection system is arranged on the rotatable tunnel simulation system and used for collecting pressure, temperature and gas flow data of the rotatable tunnel simulation system during dust explosion and measuring and calculating the influence of the dust explosion on the evolution process of the ventilation system in the well.
2. The testing device for the disturbance of the ventilation state of the mine caused by the dust explosion as claimed in claim 1, wherein the dust explosion simulation system comprises a ball-type pressure container, an air storage tank positioned at the bottom of the ball-type pressure container, an ignition coil positioned inside the ball-type pressure container, and a dust containing tray facing an air outlet of the air storage tank and used for containing dust;
after the ignition coil is heated, an exhaust electromagnetic valve on the gas storage tank is opened, dust on the dust containing tray is sprayed into the spherical pressure container, and the dust is exploded when encountering the heated ignition coil.
3. The testing device for the disturbance of the dust explosion to the ventilation state of the mine as claimed in claim 2, wherein the spherical pressure vessel has a double-layer structure, and circulating water is filled between the two layers for cooling.
4. The testing device for the disturbance of the dust explosion on the ventilation state of the mine as claimed in claim 2, wherein a protective shell is arranged outside the ball-type pressure vessel, and an end of the protective shell facing the explosion venting port of the ball-type pressure vessel is provided with a vent hole communicated with the rotatable roadway simulation system.
5. The testing device for the disturbance of the dust explosion on the ventilation state of the mine as claimed in claim 4, wherein a power supply control switch, a delayed ignition display and a pressure signal output switch are arranged below the spherical pressure container in the protective shell.
6. The testing device for the disturbance of the ventilation state of the mine shaft caused by the dust explosion as claimed in claim 1, wherein the rotatable roadway simulation system comprises a flaring connection pipe connected with the dust explosion simulation system, a straight pipe with an arched cross section communicated with the flaring connection pipe, a four-way cross joint connected with the straight pipe, and a plurality of straight pipes with an arched cross section connected with the four-way cross joint, the straight pipes are connected with each other through the four-way cross joint, and the straight pipes are connected into a whole to form a roadway ventilation network;
one end of one of the four-way cross joints is connected with a mine ventilator for ventilating a roadway ventilation network;
and one end of the tunnel ventilation network, which is far away from the dust explosion simulation system, is connected with a rotary driving device for driving the tunnel ventilation network to rotate.
7. The testing device for the disturbance of the dust explosion on the ventilation state of the mine as claimed in claim 6, wherein an outer ring and an inner ring which are coaxial with the outer ring are arranged at the through hole of the four-way cross joint, and a ball is arranged between the outer ring and the inner ring; an arch-shaped road junction used for connecting the straight pipe is reserved on the inner ring, and the road junction reserved by the four-way cross joint can be sealed by a blind plate when not used.
8. The testing device for the disturbance of the ventilation state of the mine shaft caused by the dust explosion as claimed in claim 6, wherein the rotation driving device comprises a support frame, a motor fixed on the support frame, a speed reducer connected with the motor, and a transmission beam connected with a transmission shaft of the speed reducer, and the transmission beam is connected with the roadway ventilation network.
9. The testing apparatus for the disturbance of the ventilation status of the mine caused by the dust explosion as claimed in claim 1, wherein the parameter detection system comprises a pressure sensor, a temperature sensor and a gas flow sensor which are arranged at different positions in a straight pipe for simulating the roadway.
10. The device for testing the disturbance of the dust explosion to the ventilation state of the mine as claimed in claim 2, wherein the air storage tank is connected with an air compressor outside the ball-type pressure vessel, and the air compressor charges high-pressure air into the air storage tank.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113257105A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Intelligent experiment demonstration device capable of accurately simulating gas explosion |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548254A (en) * | 2016-01-16 | 2016-05-04 | 黑龙江科技大学 | Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine |
| CN106200607A (en) * | 2016-09-30 | 2016-12-07 | 西安科技大学 | Experimental technique based on heat power disaster multiparameter temporal-spatial evolution analyzing experiment table |
| CN106846993A (en) * | 2017-04-18 | 2017-06-13 | 昌邑市创通电子科技有限公司 | A kind of dust explosion apparatus for demonstrating |
| CN107290343A (en) * | 2017-06-26 | 2017-10-24 | 重庆大学 | Coal and gas prominent power causes calamity visual virtual design pilot system |
| CN206637655U (en) * | 2017-03-23 | 2017-11-14 | 江阴新顺微电子有限公司 | Suitable for the integral type outer ignition device of diffusion furnace |
| RU2661508C1 (en) * | 2017-09-25 | 2018-07-17 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of assessment the risk of methane and dust explosion in mine |
| CN109975354A (en) * | 2019-04-11 | 2019-07-05 | 中国矿业大学(北京) | Visualize combustible explosion chemical looping reaction process test device and method |
| CN111271051A (en) * | 2020-02-14 | 2020-06-12 | 辽宁工程技术大学 | Three-way loading mine drilling and hole sealing effect simulation test device and method |
-
2020
- 2020-09-14 CN CN202010961491.1A patent/CN112082728B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548254A (en) * | 2016-01-16 | 2016-05-04 | 黑龙江科技大学 | Experiment device and method for simulating gas-coal dust explosion in underworkings of coal mine |
| CN106200607A (en) * | 2016-09-30 | 2016-12-07 | 西安科技大学 | Experimental technique based on heat power disaster multiparameter temporal-spatial evolution analyzing experiment table |
| CN206637655U (en) * | 2017-03-23 | 2017-11-14 | 江阴新顺微电子有限公司 | Suitable for the integral type outer ignition device of diffusion furnace |
| CN106846993A (en) * | 2017-04-18 | 2017-06-13 | 昌邑市创通电子科技有限公司 | A kind of dust explosion apparatus for demonstrating |
| CN107290343A (en) * | 2017-06-26 | 2017-10-24 | 重庆大学 | Coal and gas prominent power causes calamity visual virtual design pilot system |
| RU2661508C1 (en) * | 2017-09-25 | 2018-07-17 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method of assessment the risk of methane and dust explosion in mine |
| CN109975354A (en) * | 2019-04-11 | 2019-07-05 | 中国矿业大学(北京) | Visualize combustible explosion chemical looping reaction process test device and method |
| CN111271051A (en) * | 2020-02-14 | 2020-06-12 | 辽宁工程技术大学 | Three-way loading mine drilling and hole sealing effect simulation test device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113257105A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Intelligent experiment demonstration device capable of accurately simulating gas explosion |
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