CN115308263A - Coal mine early warning experimental equipment - Google Patents
Coal mine early warning experimental equipment Download PDFInfo
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- CN115308263A CN115308263A CN202210888418.5A CN202210888418A CN115308263A CN 115308263 A CN115308263 A CN 115308263A CN 202210888418 A CN202210888418 A CN 202210888418A CN 115308263 A CN115308263 A CN 115308263A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
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Abstract
The invention belongs to the technical field of coal mine early warning experiments, and particularly relates to coal mine early warning experimental equipment which comprises a pipeline assembly, a gas distribution unit, an ignition unit, a detection unit and an explosion suppression module; because the velocity of the formed detonation shock wave is very high (higher than the sound velocity) when gas explosion occurs in the mine tunnel, when the distance between the explosion suppression module and a combustible gas explosion source is short, the condition that the explosion suppression module does not take effect due to insufficient reaction velocity exists, and the action effect of the active explosion suppression module is weakened; therefore, after the gas detection sensor in the detector detects the gas, the controller drives the explosion suppressor to release the explosion suppressor therein, and high-concentration explosion suppressor mist is formed in the pipeline assembly in advance, so that the condition that the explosion suppression module does not work due to insufficient reaction speed after the concentration of the gas in the coal mine gallery is accumulated to reach the explosion lower limit is avoided, and the action effect of the explosion suppression module is ensured.
Description
Technical Field
The invention belongs to the technical field of coal mine early warning experiments, and particularly relates to coal mine early warning experimental equipment.
Background
Coal is a main energy source in China, but gas explosion happens occasionally in the coal mining process, and the mine gas explosion prevention and control technology can be mainly divided into four directions: the gas concentration monitoring is adopted, so that gas accumulation is prevented, the generation of a fire source is strictly prohibited, and the explosion suppression technology for the explosion disaster degree is reduced; explosion suppression technology and means are effective measures for controlling gas (coal dust) explosion disasters, and can be divided into two categories of passive explosion suppression and active explosion suppression according to different explosion suppression modes. At present, various passive explosion insulation sheds and automatic explosion suppression devices are respectively developed in main coal producing countries such as China, america, russia, poland, germany and the like.
The passive explosion-proof shed mainly comprises an explosion-proof rock powder shed, an explosion-proof water bag shed, an explosion-proof water tank shed and the like. The action principle of the passive explosion-proof shed is as follows: when gas (or coal dust) explosion happens, under the action of flame precursor shock wave, a container with water or rock powder (explosion inhibitor) on the explosion-proof shed is lifted or broken, so that the water or rock powder is dispersed in a roadway to form a high-concentration water mist area or rock powder cloud area, and when flame lagging behind the precursor shock wave is spread to the area, the flame is extinguished under the action of the explosion inhibitor such as water or rock powder, so that the flame is blocked from being continuously spread along the roadway, and the explosion isolation effect is realized.
The automatic explosion suppression device consists of a detector, a controller and an explosion suppressor. The method comprises the steps that firstly, a detector is arranged at a potential explosion source, when gas (or coal dust) is combusted and exploded, the detector detects information such as temperature, flame or pressure and transmits the information to a controller, the controller triggers an explosion suppressor to act after logical operation, an explosion suppressor (water, rock powder or inert gas) is rapidly sprayed out, high-concentration explosion suppressor cloud mist is formed, flames are extinguished, and therefore continuous propagation of the flames is blocked.
When gas explosion occurs in the mine tunnel, due to the fact that the velocity of the formed detonation shock wave is high (higher than the sound velocity), when the distance between the explosion suppression device and a combustible gas explosion source is short, the situation that the explosion suppression device does not work due to insufficient reaction speed exists, and the effect of the explosion suppression device is influenced.
In view of the above, the invention provides coal mine early warning experimental equipment for simulating the reaction effect of different explosion suppression schemes on detonation shock waves formed by gas explosion.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides coal mine early warning experimental equipment; the technical problem that when gas explosion occurs in a mine tunnel, due to the fact that the velocity of formed detonation shock waves is high (higher than the sound velocity), when the explosion suppression module is close to a combustible gas explosion source, the reaction velocity is insufficient, the explosion suppression module does not take effect, and the effect of the active explosion suppression module is weakened is solved.
In order to realize the purpose, the invention is realized by the following technical scheme:
the invention relates to coal mine early warning experimental equipment, which comprises:
the pipeline assembly comprises a plurality of sections of detachably connected round pipes, the pipeline assembly is used for simulating a mine tunnel which generates gas explosion to form detonation shock waves, a cover plate is hermetically arranged at the end part of the pipeline assembly, a polyethylene film is arranged in the pipeline assembly, and the polyethylene film divides the pipeline assembly into two independent cavities, namely a detonation pipe section and a propagation pipe section, of the gas explosion;
the gas distribution unit is used for filling combustible gas into the pipeline assembly and communicated with a circular pipe of the pipeline assembly through a pipeline, and comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor;
the ignition unit is fixedly arranged in a circular pipe of the initiation pipe section of the pipeline assembly;
the detection unit is arranged along a circular pipe of the pipeline assembly and comprises a plurality of pressure sensors and flame sensors;
and the explosion suppression module is used for blocking and suppressing deflagration flame generated in the pipeline assembly and comprises:
the detector is arranged in the position, close to the ignition unit, in the detonation pipe section of the pipeline assembly and used for detecting the generated detonation shock waves and sending signals to the controller after the shock waves are detected;
the explosion suppressor is fixedly arranged in a position, far away from the ignition unit, in the propagation pipe section of the pipeline assembly and filled with an explosion suppressor;
and the controller is used for controlling the operation of the explosion suppression module, and the explosion suppression device releases the explosion suppression agent in the explosion suppression module under the control of the controller.
Preferably, the explosion suppressor includes:
the spraying main machine is arranged on the outer side of the pipeline assembly and is connected with a water tap through a water pipe, and the spraying main machine atomizes input liquid water through a built-in atomizing pump;
the spraying holes are formed in the pipe wall of the circular pipe of the pipeline assembly and are connected with the spraying host through water pipes, and plugs can be detachably mounted on the spraying holes.
Preferably, the pipeline of the pipeline assembly is also provided with an auxiliary pipe, the pipe diameter of the auxiliary pipe is larger than that of the round pipe of the pipeline assembly, and the auxiliary pipe is detachably connected in the round pipe of the pipeline assembly; the plurality of data sensors are respectively installed on two sides of the auxiliary pipe.
Preferably, the cross section of the circular tube of the tube assembly is arched.
Preferably, the end part of the circular pipe of the pipeline assembly is provided with a template, and the template is semicircular and is fixedly installed on a flange plate of the circular pipe through bolts.
Preferably, the pipe wall of the auxiliary pipe of the pipe assembly is also provided with surrounding spray holes.
Preferably, the duct assembly further comprises a drying module, and the drying module performs drying by using air convection and electric heating through a fan and an electric heating element installed in the duct assembly.
Preferably, the electric heating element is arranged along a circular tube of the pipeline assembly, and the electric heating element is fixed on the outer side of the circular tube of the pipeline assembly.
Preferably, the drying module further comprises:
the absorbent cotton strip is used for absorbing liquid in the pipeline assembly;
the iron ball is provided with a through hole, a shaft lever is rotatably arranged in the through hole, and the shaft lever is fixedly connected with the end part of the absorbent cotton sliver.
Preferably, during the test, the cover plate of the end of the propagation tube section in the pipeline assembly is opened, the fan of the end of the propagation tube section in the pipeline assembly is started at the same time, the plug of the propagation tube section close to the initiation tube section in the pipeline assembly is removed, and then the test is carried out.
The invention has the following beneficial effects:
1. according to the coal mine early warning experimental equipment, after the gas detection sensor in the detector detects gas, the explosion suppressor is driven by the controller to release the explosion suppressor therein, high-concentration explosion suppressor mist is formed in the pipeline assembly in advance, and the condition that the explosion suppression module does not take effect due to insufficient reaction speed after the concentration of the gas in a coal mine gallery is accumulated to reach the lower explosion limit is avoided, so that the action effect of the explosion suppression module is ensured.
2. According to the coal mine early warning experimental equipment, the water pipe of the spraying main machine is connected to the spray holes at the required positions according to the condition that a mine tunnel needs to be simulated before an experiment is carried out through the plurality of spray holes arranged in the circular pipe of the pipeline assembly, other spray holes are sealed through plugs, then the water faucet and the spraying main machine are opened, water mist is formed in the pipeline assembly at the spray holes, and further the water mist is generated at positions with different distances from the ignition unit, so that the inhibition effect of the explosion suppression module on detonation shock waves at different distances is simulated.
3. According to the coal mine early warning experimental equipment, the fan and the heating wire are fixedly arranged at the end part of the pipeline assembly, after a single test is completed, the cover plates used for sealing at two ends of the pipeline assembly are detached, the fan and the heating wire are started, dry air is introduced into the pipeline assembly for convection, the drying inside the pipeline assembly is accelerated, and the test of subsequent working conditions can be rapidly performed in the experiment.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a schematic illustration of the open lid test of the plumbing assembly of the present invention;
FIG. 4 is a schematic view of a single section of round tube molding mortar for the piping assembly of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
in the figure: 1. a conduit assembly; 11. a pipeline; 12. a cover plate; 13. a template; 2. a gas distribution unit; 3. an explosion suppression module; 31. an explosion suppressor; 32. a spraying host machine; 33. spraying a hole; 34. a plug; 4. attaching a pipe; 5. a fan; 6. an electric heating element; 7. a water-absorbing cotton sliver; 71. an iron ball; 72. a shaft rod.
Detailed Description
In order to make the objects, technical means and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides coal mine early warning experimental equipment, which solves the technical problems that when gas explosion occurs in a mine tunnel, due to the fact that the formed detonation shock wave velocity is very high (higher than the sound velocity), when the distance between an explosion suppression module and a combustible gas explosion source is short, the reaction velocity is insufficient, so that the explosion suppression module does not take effect, and the effect of an active explosion suppression module is weakened;
in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: after a gas detection sensor in a detector detects gas, a controller drives an explosion suppressor to release an explosion suppressor therein, high-concentration explosion suppressor cloud is formed in a pipeline assembly in advance, the initial condition of a gas leakage accident in a mine tunnel is simulated, and the condition that the explosion suppression module does not take effect due to insufficient reaction speed when the explosion suppression module is close to a combustible gas explosion source and the concentration of the gas in the mine tunnel is accumulated to reach the lower explosion limit to explode and generate ultrahigh-speed detonation shock waves is avoided, so that the action effect of the explosion suppression module is ensured;
in order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1 and 2, the coal mine early warning experimental device provided by the invention comprises:
the pipeline assembly 1, the pipeline assembly 1 includes the multisection circular tube that can be dismantled and connected, the pipeline assembly 1 is used for simulating the mine tunnel that the gas explosion forms the detonation shock wave, the end of the pipeline assembly 1 is fitted with the cover plate 12 sealingly, there is polyethylene film in the pipeline assembly 1, the polyethylene film separates the pipeline assembly 1 into the detonation pipe section and independent cavity of two parts of propagation pipe section of the gas explosion;
the gas distribution unit 2 is used for filling combustible gas into the pipeline assembly 1, the gas distribution unit 2 is communicated with a circular pipe of the pipeline assembly 1 through a pipeline 11, and the gas distribution unit 2 comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor; the gas bottle fills gas into a circular tube of the pipeline assembly 1, the condition of gas leakage generated in a mine tunnel is simulated, the gas transmission pump is used for pumping the gas in the gas bottle into the pipeline assembly 1, the vacuum pump is used for vacuumizing the pipeline assembly 1, the circulating pump is used for circulating the gas in the pipeline assembly 1, and the air compressor is used for transmitting air into the pipeline assembly 1;
the ignition unit is fixedly arranged in a circular pipe of the detonation pipe section of the pipeline assembly 1, the ignition unit can be ignited by adopting a low-voltage fuse wire, and the ignition unit is used for simulating a fire source for exploding gas in a mine tunnel;
the detection unit is arranged along the circular tube of the pipeline assembly 1 and comprises a plurality of pressure sensors and flame sensors, and the detection unit collects detonation shock wave parameters in the pipeline assembly 1 in an experiment through the plurality of pressure sensors and flame sensors fixedly arranged in the pipeline assembly;
and the explosion suppression module 3, the explosion suppression module 3 is used for blocking and suppressing the deflagration flame generated in the pipeline assembly 1, and the explosion suppression module 3 comprises:
the detector is arranged in a position, close to the ignition unit, in the detonation pipe section of the pipeline assembly 1 and is used for detecting the generated detonation shock waves and sending signals to the controller after the detonation shock waves are detected; the detector comprises a temperature sensor, a flame sensor, a pressure sensor and a gas detection sensor which are fixedly arranged in a circular tube of the pipeline assembly 1;
the explosion suppressor 31, the explosion suppressor 31 is fixedly arranged at the position far away from the ignition unit in the transmission pipe section of the pipeline component 1, and explosion suppressor 31 is filled with explosion suppression agent; the explosion suppressor can adopt water, rock powder or inert gas, and the explosion suppressor released from the explosion suppressor 31 forms high-concentration explosion suppressor cloud in the pipeline component 1 to extinguish flame, thereby blocking the continuous propagation of the flame;
the controller is used for controlling the operation of the explosion suppression module 3, and the explosion suppressor 31 releases the explosion suppression agent under the control of the controller; the controller is connected with the detector and the explosion suppressor 31 through a signal wire, and after detecting that the monitoring value of the pressure sensor in the detector fluctuates, the controller starts the explosion suppressor 31 to release the explosion suppressor;
during the experiment, firstly, according to the experiment requirement, a circular pipe is connected and sealed by a flange plate, a rubber gasket and an asbestos gasket through bolts to form a pipeline assembly 1, the air tightness is checked, and meanwhile, all instruments and equipment are well debugged and are in a work preparation state; then starting a vacuum pump in the gas distribution unit 2, vacuumizing the pipeline assembly 1, closing the vacuum pump and starting a gas transmission pump after the vacuum degree required by the experiment is reached, and filling gas in a gas cylinder into the pipeline assembly 1 to ensure that the amount of the filled gas meets the volume fraction required by the experiment; then, the gas transmission pump is closed and the circulating pump is started, the mixed gas in the pipeline assembly 1 is mixed and stirred to form uniform mixed gas, or the circulating pump is not started, so that the combustible gas in the mixed gas in the pipeline assembly 1 is in a concentration state of differential distribution; then starting the detection unit and the explosion suppression module 3, and setting relevant parameters to enable each sensor to be in a detection state to be triggered; then starting an ignition unit, and recording data information collected by each pressure sensor and each flame sensor on the two sides of the polyethylene film and the explosion suppressor 31 in the pipeline assembly 1; after data collection of the detonation experiment is completed, starting an air compressor to perform positive pressure purging on the pipeline assembly 1, and removing waste gas in the pipeline 11;
the detector is arranged in the detonation pipe section of the pipeline assembly 1, the potential explosion source position in a mine underground tunnel is simulated, when gas or coal dust is combusted and exploded, the detector detects information such as temperature, flame or pressure and the like and transmits the information to the controller, the controller triggers the explosion suppressor 31 to act after logic operation, the explosion suppressor is rapidly released and sprayed, high-concentration explosion suppressor cloud mist is formed in the pipeline assembly 1, flames are extinguished, and therefore the continuous propagation of the flames is blocked;
after a gas detection sensor in the detector detects gas, the controller drives the explosion suppressor 31 to release explosion suppressor therein, high-concentration explosion suppressor cloud is formed in the pipeline assembly 1 in advance, the initial condition of gas leakage accidents occurring in the mine tunnel is simulated, ultrahigh-speed detonation shock waves are avoided after the concentration of the gas in the mine tunnel is accumulated to reach the explosion lower limit, and when the explosion suppression module 3 is close to a combustible gas explosion source, the condition that the explosion suppression module 3 does not take effect due to insufficient reaction speed exists, so that the action effect of the explosion suppression module 3 is ensured.
As an embodiment of the present invention, as shown in fig. 1 and 2, the explosion suppressor 31 includes:
the spraying main machine 32 is arranged on the outer side of the pipeline assembly 1, the spraying main machine 32 is connected with a water tap through a water pipe, and the spraying main machine 32 atomizes input liquid water through a built-in atomizing pump;
the spray holes 33 are formed in the pipe wall of the circular pipe of the pipeline assembly 1, the spray holes 33 are connected with the spraying host machine 32 through water pipes, and plugs 34 can be detachably mounted on the spray holes 33;
through installing a plurality of orifice 33 in the pipe of pipeline assembly 1, before carrying out the experiment, according to the condition that needs simulation mine pit way, with the water piping connection of spraying host computer 32 on the orifice 33 of required position to with other orifice 33 through end cap 34 lock, then open tap and spraying host computer 32, form water smoke in the pipeline assembly 1 inside of orifice 33 department, and then generate water smoke on the position of different distances with the ignition unit, with the suppression effect of simulating different distances lower explosion suppression module 3 to the detonation shock wave.
As an embodiment of the present invention, as shown in fig. 1 and 2, an attached pipe 4 is further installed on the propagation pipe section of the pipe assembly 1, the pipe diameter of the attached pipe 4 is greater than that of the circular pipe of the pipe assembly 1, and the attached pipe 4 is detachably connected to the circular pipe of the propagation pipe section of the pipe assembly 1; the plurality of data sensors are respectively arranged on two sides of the auxiliary pipe 4; through setting up the accessory tube 4 in pipeline assembly 1, verify the cavity that sets up in pipeline assembly 1's the propagation pipeline section and produce the wave absorption effect of detonation shock wave to gas explosion, adopt the ring flange through the propagation pipeline section with accessory tube 4 and pipeline assembly 1, rubber gasket and asbestos gasket pass through bolted connection and seal, the performance of the suppression detonation shock wave of accessory tube 4 to installing different configurations, quantity and distance detects, thereby use detonation driver generator and accessory tube 4 to carry out the propagation characteristic research of detonation shock wave conveniently.
As an embodiment of the present invention, as shown in fig. 4, the circular tube section of the tube assembly 1 is arched; because the pipeline that the experiment was adopted is the section bar of pipe, and actual mine gallery bottom is the plane, make the propagation characteristic of the detonation shock wave that the gas explosion in the mine gallery that pipeline subassembly 1 simulation of circular cross-section formed inaccurate inadequately, through pouring appropriate amount of mortar into the pipe of pipeline subassembly 1, form comparatively level and smooth bottom surface in the pipe after the mortar shaping, the inside molding of simulation mine gallery, make the propagation characteristic of the detonation shock wave that forms in pipeline subassembly 1 more imitate, and then promote the degree of accuracy of accessory pipe 4 wave absorption performance data in the experiment.
As an embodiment of the present invention, as shown in fig. 4, the end of the pipeline assembly 1 is provided with a template 13, and the template 13 is semicircular and is fixedly mounted on a flange of the pipeline by bolts; when mortar is poured into the pipeline of the pipeline assembly 1 to form a flat bottom surface, the pipeline assembly 1 formed by connecting a plurality of sections of pipelines is long, mortar is poured into the pipeline assembly 1 from the end part of the pipeline assembly 1, and the mortar in the long pipe diameter of the pipeline assembly 1 is difficult to keep the relatively flat bottom surface due to the corresponding slump of the mortar; through the semicircular template 13 that sets up, install the single section pipe both ends in the pipeline, pour into the mortar into wherein again, and adopt the mortar trowelling instrument to trowel the mortar in the single section pipe, improve the roughness on solidification fashioned mortar surface, then pull down template 13 and load the fashioned mortar into pipeline subassembly 1, through the operation of repetition shaping mortar in the single section pipe, the same carries out similar mortar shaping operation in accessory pipe 4, then load the fashioned mortar of polylith in proper order in the pipeline subassembly 1 that the multisection pipe is constituteed, finally obtain the required pipeline subassembly 1 of arch cross section and carry out the experiment, strengthen the authenticity of pipeline subassembly 1 simulation mine gallery cross sectional shape, promoted the degree of accuracy of verifying detonation shock wave propagation effect.
As an embodiment of the present invention, as shown in fig. 3, a surrounding nozzle hole 33 is also formed on a pipe wall of the auxiliary pipe 4 of the pipe assembly 1; when the detonation shock wave experiment of ultrahigh-speed emission is carried out through the pipeline assembly 1, the auxiliary pipe 4 is installed on a circular pipe of the pipeline assembly 1 in a bolted connection and sealing mode by adopting the flange plate, the rubber gasket and the asbestos gasket to form an additional cavity on the pipeline assembly 1 to play a passive explosion suppression role, the speed of supplementing water mist into the pipeline assembly 1 is increased by surrounding the spray holes 33 formed in the pipe wall of the auxiliary pipe 4, and the speed of forming sufficient water mist in the pipeline assembly 1 by the explosion suppressor 31 is increased by surrounding the spray holes 33 formed in the auxiliary pipe 4 when the explosion suppression module 3 is close to a combustible gas explosion source, so that the effect of the explosion suppression module 3 is tested.
As an embodiment of the present invention, as shown in fig. 2 and 3, the duct assembly 1 further includes a drying module, which performs drying by using air convection and electric heating through a fan 5 and an electric heating element 6 installed in the duct assembly 1; in the experimental process, simulation tests under different working conditions need to be carried out for many times, residual water mist or water vapor in the previous test process can interfere with initial condition parameters in the pipeline assembly 1 during the retest, and excessive time is consumed for the long and narrow pipeline of the pipeline assembly 1 to pass through natural drying, so that the test efficiency of the experiment is influenced; through fan 5 and the heating wire of fixed mounting at 1 tip of pipeline subassembly, after accomplishing the single test, lift 1 both ends of pipeline subassembly and be used for sealed apron 12, start fan 5 and heating wire, let in dry air to pipeline subassembly 1 and carry out the convection current for the inside drying of pipeline subassembly 1 is convenient for carry out the test of follow-up operating mode fast in the experiment.
As an embodiment of the present invention, as shown in fig. 2, the electric heating element 6 is arranged along the circular tube of the pipe assembly 1, and the electric heating element 6 is fixed on the outer side of the circular tube of the pipe assembly 1; adopt electric heating element 6 to be snakelike laminating and arrange the pipe outside at pipe assembly 1 at the heating wire, in the test process of experiment, start heating wire heating pipe assembly 1, sultry temperature environment in the simulation mine gallery, after the test, the water smoke can condense on pipe assembly 1's pipe inner wall, heat through electric heating element 6 of laminating on pipe assembly 1, cooperation moving fan 5 promotes the evaporation drying of moisture, be convenient for carry out the test of follow-up operating mode fast in the experiment.
As an embodiment of the present invention, as shown in fig. 3 and 5, the drying module further includes:
an absorbent tampon 7, the absorbent tampon 7 being used to absorb liquid in the tube assembly 1;
the iron ball 71, the iron ball 71 is provided with a through hole, a shaft rod 72 is rotatably arranged in the through hole, and the shaft rod 72 is fixedly connected with the end part of the absorbent cotton sliver 7;
during the experimental test, when the amount of liquid remaining in the pipe assembly 1 is large, the drying rate by hot air convection and electric heating is still slow; through the absorbent cotton sliver 7 that sets up, make it tie up and fix on iron ball 71's axostylus axostyle 72, when accomplishing the moisture in the test back needs to clear up pipeline assembly 1, open the apron 12 at pipeline assembly 1 both ends earlier, then adopt magnet attached outside pipeline assembly 1, the one end along pipeline assembly 1 slides to the other end, utilize magnetic adsorption to drive the iron ball 71 in the pipeline assembly 1 and remove, make absorbent cotton sliver 7 along the inside removal of the pipe of pipeline assembly 1, will wherein save more moisture absorption, restart fan 5 and electric heat wire carry out the complete drying to pipeline assembly 1, ensure to carry out the test of follow-up operating mode fast in the experiment.
As an embodiment of the present invention, as shown in fig. 3, in the test process, the cover plate 12 of the end of the propagation pipe section in the pipe assembly 1 is opened, the fan 5 of the end of the propagation pipe section in the pipe assembly 1 is started at the same time, the plug 34 of the propagation pipe section close to the initiation pipe section in the pipe assembly 1 is removed, and then the test is performed; through the aforementioned operations, the fan 5 forms air convection in the propagation pipe section of the pipe assembly 1, simulates the ventilation environment in the mine tunnel, and tests the influence factors on the propagation speed of the detonation shock wave.
Claims (10)
1. The utility model provides a colliery early warning experimental facilities which characterized in that includes:
the pipeline assembly (1), the pipeline assembly (1) includes the tube of multisection detachable connection, the pipeline assembly (1) is used for simulating the mine gallery that the gas explosion takes place and forms the detonation shock wave;
the gas distribution unit (2), the gas distribution unit (2) is used for filling combustible gas into the pipeline assembly (1), the gas distribution unit (2) is communicated with the circular pipe of the pipeline assembly (1) through a pipeline (11), and the gas distribution unit (2) comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor;
the ignition unit is fixedly arranged in a circular pipe of the detonation pipe section of the pipeline assembly (1);
the detection unit is arranged along a circular tube of the pipeline assembly (1) and comprises a plurality of pressure sensors and flame sensors;
explosion suppression module (3), explosion suppression module (3) are used for blocking the suppression to the detonation flame that produces in duct assembly (1), and explosion suppression module (3) include:
the detector is arranged in a position, close to the ignition unit, in the detonation pipe section of the pipeline assembly (1) and used for detecting the generated detonation shock waves and sending signals to the controller after the shock waves are detected;
the explosion suppressor (31), the explosion suppressor (31) is fixedly installed in the position far away from the ignition unit in the transmission pipe section of the pipeline assembly (1), and explosion suppressor (31) is filled with explosion suppression agent;
and the controller is used for controlling the operation of the explosion suppression module (3), and the explosion suppressor (31) releases the explosion suppression agent under the control of the controller.
2. A coal mine warning experimental facility as claimed in claim 1, characterized in that the explosion suppressor (31) comprises:
the spraying main machine (32), the spraying main machine (32) is installed on the outer side of the pipeline assembly (1), the spraying main machine (32) is connected with a water tap through a water pipe, and the spraying main machine (32) atomizes input liquid water through a built-in atomizing pump;
the spraying device comprises spraying holes (33), wherein the spraying holes (33) are formed in the pipe wall of a circular pipe of the pipeline assembly (1), the spraying holes (33) are connected with a spraying host (32) through water pipes, and plugs (34) can be detachably mounted on the spraying holes (33).
3. The coal mine early warning experimental facility as claimed in claim 2, wherein the pipeline of the pipeline assembly (1) is further provided with an auxiliary pipe (4), the pipe diameter of the auxiliary pipe (4) is larger than that of the round pipe of the pipeline assembly (1), and the auxiliary pipe (4) is detachably connected in the round pipe of the pipeline assembly (1); the plurality of data sensors are respectively arranged on two sides of the auxiliary pipe (4).
4. A coal mine early warning experimental facility as claimed in claim 3, characterized in that the pipe assembly (1) has a round pipe section.
5. The coal mine early warning experimental facility as claimed in claim 3, wherein the pipe assembly (1) is provided with a template (13) at the end of the circular pipe, and the template (13) is semicircular and is fixedly mounted on the flange of the circular pipe through bolts.
6. The coal mine early warning experimental facility as claimed in claim 1, wherein the pipe wall of the auxiliary pipe (4) of the pipe assembly (1) is also provided with surrounding spray holes (33).
7. The coal mine early warning experimental facility as claimed in claim 1, wherein the pipeline assembly (1) further comprises a drying module, and the drying module is used for drying by means of air convection and electric heating through a fan (5) and an electric heating element (6) installed in the pipeline assembly (1).
8. The coal mine early warning experimental facility as claimed in claim 7, wherein the electric heating element (6) is arranged along the circular tube of the pipeline assembly (1), and the electric heating element (6) is fixed on the outer side of the circular tube of the pipeline assembly (1).
9. The coal mine warning experimental facility as claimed in claim 7, wherein the drying module further comprises:
the absorbent cotton strip (7), the absorbent cotton strip (7) is used for absorbing the liquid in the pipeline component (1);
the iron ball (71) is provided with a through hole, a shaft rod (72) is rotatably arranged in the through hole, and the shaft rod (72) is fixedly connected with the end part of the absorbent cotton sliver (7).
10. A coal mine early warning experimental facility as claimed in claim 7, characterized in that during the test, the cover plate (12) of the end of the propagation pipe section in the pipe assembly (1) is opened, the fan (5) of the end of the propagation pipe section in the pipe assembly (1) is started at the same time, the plug (34) of the propagation pipe section close to the initiation pipe section in the pipe assembly (1) is dismounted, and then the test is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210888418.5A CN115308263A (en) | 2022-07-27 | 2022-07-27 | Coal mine early warning experimental equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210888418.5A CN115308263A (en) | 2022-07-27 | 2022-07-27 | Coal mine early warning experimental equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482325A (en) * | 2023-05-12 | 2023-07-25 | 安徽理工大学 | Dust suppression and explosion suppression effect monitoring experiment system and experiment method for explosion impact dust emission |
| CN117027953A (en) * | 2023-09-18 | 2023-11-10 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
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2022
- 2022-07-27 CN CN202210888418.5A patent/CN115308263A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482325A (en) * | 2023-05-12 | 2023-07-25 | 安徽理工大学 | Dust suppression and explosion suppression effect monitoring experiment system and experiment method for explosion impact dust emission |
| CN116482325B (en) * | 2023-05-12 | 2024-05-07 | 安徽理工大学 | Dust suppression and explosion suppression effect monitoring experiment system and experiment method for explosion impact dust emission |
| CN117027953A (en) * | 2023-09-18 | 2023-11-10 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
| CN117027953B (en) * | 2023-09-18 | 2024-03-12 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
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