CN113482700A - Automatic explosion suppression system in coal mine - Google Patents
Automatic explosion suppression system in coal mine Download PDFInfo
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- CN113482700A CN113482700A CN202110771524.0A CN202110771524A CN113482700A CN 113482700 A CN113482700 A CN 113482700A CN 202110771524 A CN202110771524 A CN 202110771524A CN 113482700 A CN113482700 A CN 113482700A
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- 239000000843 powder Substances 0.000 claims abstract description 89
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 238000005507 spraying Methods 0.000 claims abstract description 47
- 238000001514 detection method Methods 0.000 claims abstract description 15
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- 239000010959 steel Substances 0.000 claims description 22
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- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000002817 coal dust Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
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- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
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- 210000004556 brain Anatomy 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/08—Rock dusting of mines; Depositing other protective substances
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Abstract
The invention provides an automatic explosion suppression system in a coal mine, which is used for solving the technical problems that the existing explosion suppression device is complex in structure, high in processing difficulty, easy to block a piston, inconvenient to powder charge, incapable of being actively excited according to environmental conditions and the like. The powder spraying device comprises a powder spraying component, a powder spraying component triggering mechanism, a sensor detection component and a centralized control component, wherein the powder spraying component triggering mechanism comprises an active triggering mechanism and/or a passive triggering mechanism, the active triggering mechanism and/or the passive triggering mechanism are arranged on a force sensing seat, and the active triggering mechanism and/or the passive triggering mechanism are connected with the powder spraying component through a driving component; the active trigger mechanism and the sensor detection assembly are connected with the centralized control assembly. The invention can realize the bidirectional two-way passive and active triggering function, has the characteristics of compact structure, safety, reliability, energy conservation, consumption reduction and the like, and can effectively reduce the serious damage degree of major coal mine disasters such as gas, coal dust explosion and the like.
Description
Technical Field
The invention relates to the technical field of underground explosion suppression of coal mines, in particular to an automatic explosion suppression system for an underground coal mine.
Background
The method for isolating and inhibiting gas and coal dust explosion in coal mine in China generally adopts a method of hanging an explosion-proof water bag on a roadway support, and the method is simple but has poor effectiveness. And a few parts adopt a device for isolating and inhibiting gas coal dust explosion, which can automatically and rapidly isolate and inhibit explosion when gas coal dust explosion occurs in a coal mine, so as to prevent secondary explosion caused by explosion spread. The automatic explosion-proof device for underground coal mine generally comprises a shock wave receiving device, a front suspension device, a rear suspension device and a main assembly, wherein the main assembly comprises an action trigger mechanism, a high-pressure air cavity assembly, a transition cavity assembly, an outer cover assembly, a pressure gauge component and an inflating device, and the action trigger mechanism comprises a sliding hoop, a loading hoop, an air ejector pipe, a piston, a steel ball and the like. The action trigger mechanism has a complex structure and a large processing difficulty; fire extinguishing dust easily enters the trigger piston cylinder, so that the problems of piston blockage, incapability of triggering in time and the like are easily caused; in the field powder filling process, the fire extinguishing powder is poured from the cut after the device is placed upside down, and the device is placed upside down and is easy to be excited by mistake; secondly, the powder filled in the incision is seriously diffused, which is easy to cause environmental pollution and personal injury. In addition, the explosion-proof device is only excited by explosion shock waves and cannot be actively excited according to the requirements of environmental conditions.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides the underground coal mine automatic explosion-proof system, which can realize the bidirectional two-way passive and active triggering functions, has the characteristics of compact structure, safety, reliability, energy conservation, consumption reduction and the like, and can effectively reduce the serious damage degree of major coal mine disasters such as gas, coal dust explosion and the like.
In order to solve the technical problems, the invention adopts the following technical scheme: an underground coal mine automatic explosion suppression system comprises a powder spraying component, a powder spraying component triggering mechanism, a sensor detection component and a centralized control component, wherein the powder spraying component triggering mechanism comprises an active triggering mechanism and/or a passive triggering mechanism, the active triggering mechanism and/or the passive triggering mechanism are arranged on a force sensing seat, and the active triggering mechanism and/or the passive triggering mechanism are connected with the powder spraying component through a driving component; the active trigger mechanism and the sensor detection assembly are connected with the centralized control assembly.
The passive trigger mechanism comprises a force sensing stress hair-sending assembly, the force sensing stress hair-sending assembly comprises a force sensing disc, a gear strip and a balance block, the gear strip transversely penetrates through the force sensing seat, two ends of the gear strip are fixed through lining blocks, the upper surface of the gear strip is fixed through a force sensing seat cover, gear teeth are uniformly arranged on the lower surface of the gear strip, and the gear teeth are matched with the driving assembly; two ends of the gear rack extend to the outside of the force sensing seat and are respectively fixedly connected with the force sensing disc and the balance block.
The active trigger mechanism comprises an electric excitation assembly, the electric excitation assembly comprises a motor and a motor frame, the motor frame is fixed on one side of the outside of the force sensing seat, the motor is arranged on the motor frame, and an output shaft of the motor is connected with the driving assembly through an overrunning clutch.
The driving assembly comprises an internal driving assembly and an external driving assembly, the internal driving assembly comprises a rotating shaft I, a pinion I, a bevel gear II and a small shaft, two ends of the rotating shaft I are longitudinally fixed inside the force sensing seat through a bearing seat I and a bearing seat III respectively, the pinion I and the bevel gear II are arranged at two ends of the rotating shaft I respectively, the pinion I is matched with the passive triggering mechanism, and the rotating shaft I is matched with the active triggering mechanism; the small shaft is fixed on the side wall of the force sensing seat through the bearing seat II, one end of the small shaft is located inside the force sensing seat and is fixedly connected with the bevel gear I, the bevel gear I is meshed with the bevel gear II, and the other end of the small shaft is located outside the force sensing seat and is matched with the external driving assembly.
The external driving assembly comprises a pinion II and a gear sleeve, the pinion II is fixedly connected with the pinion shaft, the gear sleeve is arranged on the lower portion of the force sensing seat and meshed with the pinion II, and the gear sleeve is matched with the powder spraying assembly.
The powder spraying component comprises a trigger piston cylinder structure and a powder cover structure, and the trigger piston cylinder structure is respectively connected with the powder spraying component trigger mechanism and the powder cover structure; the trigger piston cylinder structure comprises a cylinder body, a piston is movably arranged in the cylinder body, a sealing cover is arranged at the rear end of the cylinder body, and a check ring is arranged at the front end of the cylinder body; still be provided with high-pressure gas outlet cover and trigger assembly on the cylinder body respectively, be provided with the switching pipe on the high-pressure gas outlet cover, and cylinder body and high-pressure gas outlet cover all are connected with powder cover structure, and trigger assembly is connected with the subassembly trigger mechanism that dusts.
The trigger assembly comprises a rotary sleeve and a steel ball, a trigger hole matched with the steel ball is formed in the cylinder body, and the steel ball is loaded into the cylinder body through the trigger hole; the rotating sleeve is sleeved on the cylinder body and corresponds to the steel balls, and a key groove matched with the steel balls is formed in the rotating sleeve; the gear sleeve is fixedly connected with the rotary sleeve.
The inside sealing washer that is provided with of front end of cylinder body, the outside cover of front end are equipped with the cylinder body sealing ring.
The powder cover structure comprises a powder cover body, a high-pressure pipe and an air injection cylinder, wherein the powder cover body is connected with the high-pressure air outlet cover, the high-pressure pipe and the air injection cylinder are both arranged inside the powder cover body, one end of the high-pressure pipe is communicated with the air injection cylinder, and the other end of the high-pressure pipe is communicated with the cylinder body.
The rear end of the powder cover body is provided with a rear end sealing ring I and a rear end sealing ring II in parallel, and a rear end sealing film is arranged between the rear end sealing ring I and the rear end sealing ring II; the front end of powder cover body is provided with the front end sealing ring, and the outside of front end sealing ring is provided with the sealed lid of front end, and is provided with the front end seal membrane between front end sealing ring and the sealed lid of front end.
According to the invention with the structure, the force-sensitive stress-generating component is used as a passive trigger mechanism of the powder spraying component, the shock wave generated by external explosion is used as a trigger source, when the passive trigger mechanism senses the shock wave, the shock wave is triggered, and then the powder spraying component is triggered to spray powder through the driving component; the electric excitation component is used as an active trigger mechanism of the powder spraying component, the sensor detection component detects the ultraviolet radiation of explosion flame and the CO2 emission spectrum generated by the combustion of hydrocarbon substances and transmits the emission spectrum to the centralized control component, the centralized control component is used as the brain of the whole explosion-proof system to analyze and process the explosion signal uploaded by the sensor detection component and output a starting signal to the electric excitation component, the electric excitation component drives the powder spraying component to instantly spray fire extinguishing powder to form an oxygen-isolating, temperature-reducing and fire-extinguishing powder vaporific region, a stable explosion-proof barrier is formed before the explosion flame reaches, and the bidirectional two-way passive and active trigger functions of the whole automatic explosion-proof system are realized. The invention has compact integral structure, safety and reliability, can effectively reduce the serious damage degree of coal mine major disasters such as gas, coal dust explosion and the like, saves energy, reduces consumption and provides more stable guarantee for the underground safety of the coal mine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic structural diagram of a powder spraying component triggering mechanism of the invention;
FIG. 3 is a view taken along line A-A of FIG. 2;
FIG. 4 is a view taken along line B-B of FIG. 2;
FIG. 5 is a top view of FIG. 2;
FIG. 6 is a schematic view of a trigger piston cylinder configuration of the present invention;
FIG. 7 is a side view of the trigger assembly of the present invention;
FIG. 8 is a front cross-sectional view of the trigger assembly of the present invention;
fig. 9 is a schematic view of the overall structure of the present invention.
In the figure: the force sensing excitation assembly 1, the electric excitation assembly 2, the centralized control assembly 3, the sensor detection assembly 4, the powder spraying assembly 5, the force sensing disc 11, the gear bar 12, the lining block 13, the force sensing seat cover 14, the pinion I15, the bearing seat I16, the rotating shaft I17, the bevel gear I18, the bearing seat II 19, the pinion II 20, the balance weight 21, the gear sleeve 22, the bevel gear II 23, the motor 24, the motor frame 25, the overrunning clutch 26, the bearing seat III 27, the force sensing seat 28, the pinion 29, the sealing cover 31, the cylinder body 32, the steel balls 33, the rotating sleeve 34, the screws 35, the pistons 36, the high-pressure air outlet cover 37, the sealing rings 38, the cylinder sealing rings 39, the retaining rings 40, the key grooves 41, the screw holes I42, the screw holes II 43, the adapter pipe I46, the adapter pipe II 47, the rear-end sealing ring I51, the rear-end sealing ring II 52, the rear-end sealing film 53, the fixing frame 54, the high-pressure pipe 55, the powder cover body 56 and the front-end sealing ring 57, a front sealing cover 58 and a front sealing film 59.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Embodiment 1, as shown in fig. 1, the invention provides an automatic explosion suppression system in a coal mine, which comprises a powder spraying component 5 and a powder spraying component triggering mechanism, wherein the powder spraying component triggering mechanism comprises a passive triggering mechanism, the passive triggering mechanism is arranged on a force sensing seat 28, shock waves generated by external explosion are used as a triggering source, and the passive triggering mechanism senses the shock waves and then triggers the shock waves. The passive trigger mechanism is connected with the powder spraying component 5 through the driving component, and when the passive trigger mechanism is triggered, the powder spraying component 5 is triggered to work through the driving component, so that a stable explosion-proof barrier is formed before the explosion flame reaches.
As shown in fig. 2 and 4, the passive trigger mechanism includes a force sensing excitation assembly 1, the force sensing excitation assembly 1 includes a force sensing disc 11, a gear bar 12 and a balance block 21, the gear bar 12 transversely penetrates through a force sensing seat 28, two ends of the gear bar 12 are fixed by pads 13, the number of the pads 13 is an L-shaped structure, the number of the pads is four, two ends of the gear bar are respectively provided with two pads, the two pads form a U-shaped structure, the gear bar 12 is embedded in a groove of the U-shaped structure, and an upper surface of the gear bar 12 is fixed by a force sensing seat cover 14, so that the gear bar 12 is stably fixed in the force sensing seat 28. Gear teeth are uniformly arranged on the lower surface of the gear rack 12 and matched with the driving component. The two ends of the gear rack 12 extend to the outside of the force sensing seat 28 and are respectively fixedly connected with the force sensing disc 11 and the balance block 21, the force sensing disc 11 is used for receiving shock waves, the force sensing disc 11 moves close to the force sensing seat 28 under the effect of the shock waves, so that the gear rack 12 is pushed to move, the gear teeth of the gear rack 12 drive the driving component to act, and the driving component triggers the powder spraying component 5 to work.
As shown in fig. 3 and 5, the driving assembly includes an internal driving assembly and an external driving assembly, the internal driving assembly includes a rotating shaft i 17, a pinion i 15, a bevel gear i 18, a bevel gear ii 23 and a small shaft 29, the rotating shaft i 17 is longitudinally arranged inside the force sensing seat 28, and two ends of the rotating shaft i 17 are respectively fixed through a bearing seat i 16 and a bearing seat iii 27, that is, the rotating shaft i 17 is rotatably connected with the force sensing seat 28. Pinion I15 and bevel gear II 23 are fixed the both ends that set up at pivot I17 respectively, and pinion I15 cooperatees with passive trigger mechanism's rack 12, and when rack 12 was promoted, the teeth of a cogwheel of rack 12 will drive pinion I15 and rotate, and pinion I15 drives pivot I17 in step and rotates, and pivot I17 drives bevel gear II 23 and rotates. The small shaft 29 is fixed on the side wall of the force sensing seat 28 through a bearing seat II 19, one end of the small shaft 29 is positioned inside the force sensing seat 28 and is fixedly connected with the bevel gear I18, and the other end of the small shaft 29 is positioned outside the force sensing seat 28 and is matched with an external driving component. The bevel gear I18 is meshed with the bevel gear II 23, and the bevel gear II 23 drives the bevel gear I18 to rotate, the bevel gear I18 drives the small shaft 29 to rotate, and the small shaft 29 drives the external driving component to act when the rotating shaft I17 drives the bevel gear II 23 to rotate. The external driving assembly comprises a pinion II 20 and a gear sleeve 22, the pinion II 20 is fixedly connected with a small shaft 29, and the small shaft 29 drives the pinion II 20 to rotate when rotating; the gear sleeve 22 is arranged on the lower portion of the force sensing seat 28 and meshed with the pinion II 20, the gear sleeve 22 is matched with the powder spraying component 5, the pinion II 20 drives the gear sleeve 22 to rotate when rotating, and the gear sleeve 22 starts the powder spraying component 5 to work.
In this embodiment, the powder spraying component 5 includes a trigger piston cylinder structure and a powder cover structure, and the trigger piston cylinder structure is connected with the powder spraying component trigger mechanism and the powder cover structure respectively. As shown in fig. 6, the trigger piston cylinder structure includes a cylinder 32, a piston 36 is movably mounted inside the cylinder 32, a sealing cap 31 is mounted at the rear end of the cylinder 32, a retainer ring 40 is mounted at the front end of the cylinder, the sealing cap 31 serves to seal the cylinder 32, and the retainer ring 40 serves to stop the piston 36 from coming out of the cylinder 32. Still be provided with high-pressure gas outlet cover 37 and trigger subassembly on the cylinder body 32 respectively, be provided with two adapter tubes on the high-pressure gas outlet cover 37, be adapter tube I46 and adapter tube II 47 respectively, adapter tube I46 is used for connecting outside high-pressure air supply and aerifys for the high-pressure tube, and I47 is used for connecting the high-pressure gauge, is used for daily inspection flame proof device whether normal. The cylinder body 32 and the high-pressure air outlet cover 37 are both connected with a powder cover structure, and the trigger component is connected with a powder spraying component trigger mechanism.
As shown in fig. 7 and 8, the trigger assembly includes a rotary sleeve 34 and a steel ball 33, a trigger hole matched with the steel ball 33 is formed on the cylinder 32, the steel ball 33 is loaded into the cylinder 32 through the trigger hole, and the rotary sleeve 34 is sleeved on the cylinder 32 and corresponds to the steel ball 33. Rotatory cover 34 and gear sleeve 22 fixed connection, gear sleeve 22 will drive rotatory cover 34 and rotate when rotating, be provided with four on the rotatory cover 34 with steel ball 33 assorted keyway 41, when the keyway rotated to the steel ball upper end, the steel ball will be bounced under the promotion of piston to make the piston move backward, compressed air will follow the fumarole blowout, drive the quick dispersion of powder of putting out a fire in the tunnel, play the effect of isolated explosion source. That is, the signal transmission route passively triggered by the explosion suppression system in this embodiment is: blast shock wave → force sensing disk 11 → rack 12 → pinion 15 → rotating shaft 17 → bevel gear 23 → bevel gear 18 → pinion 29 → pinion 20 → gear sleeve 22 → rotating sleeve 34 → steel ball 33 bouncing → powder spraying is triggered.
The rear end of the rotary sleeve 34 is provided with four screw holes I42 for fixing the gear sleeve 22; the front end of the rotary sleeve 34 is provided with four screw holes II 43 for mounting screws to fix the rotary sleeve 34 and the cylinder body to prevent rotation, so that the product is prevented from being triggered by mistake in the transportation and mounting processes. When the product is installed in place, the screw at the front end of the rotary sleeve is loosened, so that the product is in a standby working state. Two sealing rings 38 are arranged inside the front end of the cylinder body 32, a cylinder body sealing ring 39 is sleeved outside the front end, and the sealing rings 38 and the sealing ring 39 both play a sealing role. The piston 36 is inserted from the front end of the cylinder 32, and then the front retainer 40 of the cylinder is installed, and the steel balls 33 are inserted from the trigger hole of the cylinder and then the rotating sleeve 34 is installed.
As shown in fig. 9, the powder cover structure includes a powder cover body 56, a high pressure pipe 55 and an air injection cylinder, the powder cover body 56 is connected with the high pressure air outlet cover 37, the high pressure pipe 55 and the air injection cylinder are both arranged inside the powder cover body 56, and one end of the high pressure pipe 55 is communicated with the air injection cylinder, and the other end is communicated with the cylinder body 32. The rear end of powder cover body 56 is provided with rear end sealing ring I51 and rear end sealing ring II 52 side by side, and is provided with rear end seal membrane 53 between rear end sealing ring I51 and the rear end sealing ring II 52, and rear end seal membrane 53 can block the inside that the powder of putting out a fire got into high pressure exhaust hood 37, also prevents during its high pressure vent hole that gets into the cylinder body to prevent that the piston from being put out a fire the powder card and dying, reduce the fault rate, improve the fail safe nature of product. The front end of powder cover body 56 is provided with front end sealing ring 57, and the outside of front end sealing ring 57 is provided with the sealed lid 58 of front end, and is provided with front end seal membrane 59 between front end sealing ring 57 and the sealed lid 58 of front end, and front end sealing ring 57, the sealed lid 58 of front end and front end seal membrane 59 all play sealed effect, prevent that the powder of putting out a fire from spilling.
Embodiment 2, as shown in fig. 1, an automatic explosion suppression system in a coal mine underground comprises a powder spraying component 5, a powder spraying component triggering mechanism, a sensor detection component 4 and a centralized control component 3, wherein the powder spraying component triggering mechanism comprises an active triggering mechanism, the active triggering mechanism is arranged on a force sensing seat 28, the active triggering mechanism is connected with the powder spraying component 5 through a driving component, and the active triggering mechanism and the sensor detection component 4 are both connected with the centralized control component 3.
In this embodiment, the sensor detection component 4 may adopt a camera and any one of a smoke sensor, a carbon dioxide sensor, a gas sensor, etc., as the eyes and nose of the whole system, detect the ultraviolet radiation of the explosion flame and the CO2 emission spectrum (4.4 μm) generated by the combustion of the hydrocarbon substance, and transmit the emission spectrum to the centralized control component 3, the centralized control component 3 starts the active trigger mechanism to operate after receiving the explosion signal, and then the active trigger mechanism triggers the powder spraying component 5 to operate.
The centralized control component 3 is the brain of the whole explosion-proof system, analyzes explosion signals (such as ultraviolet and infrared signals) uploaded by the sensor detection component 4, and performs multi-signal processing by combining with the logic comprehensive judgment of flame flicker frequency, so that false alarm and required optimal fire detection performance are inhibited to the maximum extent. After operation and analysis, a tunnel needs to be started in advance near the explosion area to output a starting signal to the electric excitation assembly, the electric excitation assembly drives the powder spraying assembly to instantly spray fire extinguishing powder to form an oxygen-isolating temperature-reducing fire extinguishing powder vaporific area, and a stable explosion-proof barrier is formed before the explosion flame reaches.
As shown in fig. 2 and 5, the active triggering mechanism includes an electric excitation assembly 2, the electric excitation assembly 2 includes a motor 24 and a motor frame 25, the motor frame 25 is fixed at one side of the outside of the force sensing base 28, the motor 24 is arranged on the motor frame 25 and connected with the centralized control assembly 3, and an output shaft of the motor 24 is connected with a rotating shaft i 17 of the internal driving assembly through an overrunning clutch 26. The centralized control component 3 controls the motor 24 to work, an output shaft of the motor 24 drives the rotating shaft I17 to rotate through the overrunning clutch 26, then the rotating shaft I17 drives the bevel gear II 23 to rotate, the bevel gear II 23 drives the bevel gear I18 to rotate, and finally the powder spraying component 5 is triggered to work by driving the external driving component to act. Namely, the signal transmission route actively triggered by the explosion suppression system in the embodiment is as follows: explosion flame → sensor detection component 4 → centralized control component 3 → motor 24 → overrunning clutch 26 → rotating shaft 17 → bevel gear 23 → bevel gear 18 → small shaft 29 → pinion 20 → gear sleeve 22 → rotating sleeve 34 → steel ball 33 bounces → powder injection is triggered. The overrunning clutch 26 arranged here has the function of blocking the impact of the force generated by the shock wave on the motor 24, and the influence on the control triggering of the motor 24 is avoided, so that the active and passive triggering processes of the whole explosion-proof system are realized.
The other structure is the same as embodiment 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An automatic explosion suppression system in a coal mine well is characterized in that: the powder spraying device comprises a powder spraying component (5), a powder spraying component triggering mechanism, a sensor detection component (4) and a centralized control component (3), wherein the powder spraying component triggering mechanism comprises an active triggering mechanism and/or a passive triggering mechanism, the active triggering mechanism and/or the passive triggering mechanism are/is arranged on a force sensing seat (28), and the active triggering mechanism and/or the passive triggering mechanism are/is connected with the powder spraying component (5) through a driving component; the active trigger mechanism and the sensor detection component (4) are both connected with the centralized control component (3).
2. The automatic explosion suppression system in a coal mine well according to claim 1, characterized in that: the passive trigger mechanism comprises a force sensing excitation assembly (1), the force sensing excitation assembly (1) comprises a force sensing disc (11), a gear bar (12) and a balance block (21), the gear bar (12) transversely penetrates through a force sensing seat (28), two ends of the gear bar (12) are fixed through lining blocks (13), the upper surface of the gear bar (12) is fixed through a force sensing seat cover (14), gear teeth are uniformly arranged on the lower surface of the gear bar (12), and the gear teeth are matched with a driving assembly; two ends of the gear rack (12) extend to the outside of the force sensing seat (28) and are respectively fixedly connected with the force sensing disc (11) and the balance block (21).
3. The automatic explosion suppression system in a coal mine well according to claim 1, characterized in that: the active trigger mechanism comprises an electric excitation assembly (2), the electric excitation assembly (2) comprises a motor (24) and a motor frame (25), the motor frame (25) is fixed on one side of the outside of a force sensing seat (28), the motor (24) is arranged on the motor frame (25), and an output shaft of the motor (24) is connected with a driving assembly through an overrunning clutch (26).
4. The automatic underground coal mine explosion suppression system according to any one of claims 1-3, characterized in that: the driving assembly comprises an internal driving assembly and an external driving assembly, the internal driving assembly comprises a rotating shaft I (17), a pinion I (15), a bevel gear I (18), a bevel gear II (23) and a small shaft (29), two ends of the rotating shaft I (17) are longitudinally fixed inside a force sensing seat (28) through a bearing seat I (16) and a bearing seat III (27), the pinion I (15) and the bevel gear II (23) are arranged at two ends of the rotating shaft I (17) respectively, the pinion I (15) is matched with a passive trigger mechanism, and the rotating shaft I (17) is matched with an active trigger mechanism; the small shaft (29) is fixed on the side wall of the force sensing seat (28) through a bearing seat II (19), one end of the small shaft (29) is located inside the force sensing seat (28) and is fixedly connected with a bevel gear I (18), the bevel gear I (18) is meshed with a bevel gear II (23), and the other end of the small shaft (29) is located outside the force sensing seat (28) and is matched with an external driving assembly.
5. The automatic explosion suppression system in a coal mine well according to claim 4, characterized in that: the external driving assembly comprises a pinion II (20) and a gear sleeve (22), the pinion II (20) is fixedly connected with a pinion shaft (29), the gear sleeve (22) is arranged on the lower portion of the force sensing seat (28) and meshed with the pinion II (20), and the gear sleeve (22) is matched with the powder spraying assembly (5).
6. The underground coal mine automatic explosion suppression system according to any one of claims 1-3 and 5, which is characterized in that: the powder spraying component (5) comprises a trigger piston cylinder structure and a powder cover structure, and the trigger piston cylinder structure is respectively connected with the powder spraying component trigger mechanism and the powder cover structure; the trigger piston cylinder structure comprises a cylinder body (32), a piston (36) is movably arranged in the cylinder body (32), a sealing cover (31) is arranged at the rear end of the cylinder body (32), and a retaining ring (40) is arranged at the front end of the cylinder body; the powder spraying device is characterized in that the cylinder body (32) is also provided with a high-pressure air outlet cover (37) and a trigger component respectively, the high-pressure air outlet cover (37) is provided with a switching pipe, the cylinder body (32) and the high-pressure air outlet cover (37) are both connected with a powder cover structure, and the trigger component is connected with a powder spraying component trigger mechanism.
7. The automatic explosion suppression system in a coal mine well according to claim 6, characterized in that: the trigger assembly comprises a rotary sleeve (34) and a steel ball (33), a trigger hole matched with the steel ball (33) is formed in the cylinder body (32), and the steel ball (33) is installed in the cylinder body (32) through the trigger hole; the rotating sleeve (34) is sleeved on the cylinder body (32) and corresponds to the steel ball (33), and a key groove (41) matched with the steel ball (33) is arranged on the rotating sleeve (34); the gear sleeve (22) is fixedly connected with the rotary sleeve (34).
8. The automatic explosion suppression system in a coal mine well according to claim 7, characterized in that: a sealing ring (38) is arranged inside the front end of the cylinder body (32), and a cylinder body sealing ring (39) is sleeved outside the front end.
9. The automatic explosion suppression system in a coal mine well according to claim 7 or 8, characterized in that: the powder cover structure comprises a powder cover body (56), a high-pressure pipe (55) and an air injection cylinder, wherein the powder cover body (56) is connected with a high-pressure air outlet cover (37), the high-pressure pipe (55) and the air injection cylinder are both arranged inside the powder cover body (56), one end of the high-pressure pipe (55) is communicated with the air injection cylinder, and the other end of the high-pressure pipe is communicated with the cylinder body (32).
10. The automatic explosion suppression system in a coal mine well according to claim 9, characterized in that: the rear end of the powder cover body (56) is provided with a rear end sealing ring I (51) and a rear end sealing ring II (52) in parallel, and a rear end sealing film (53) is arranged between the rear end sealing ring I (51) and the rear end sealing ring II (52); the front end of the powder cover body (56) is provided with a front end sealing ring (57), the outer side of the front end sealing ring (57) is provided with a front end sealing cover (58), and a front end sealing film (59) is arranged between the front end sealing ring (57) and the front end sealing cover (58).
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| CN202110771524.0A CN113482700A (en) | 2021-07-08 | 2021-07-08 | Automatic explosion suppression system in coal mine |
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| CN202110771524.0A CN113482700A (en) | 2021-07-08 | 2021-07-08 | Automatic explosion suppression system in coal mine |
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Effective date of registration: 20230718 Address after: 454650 Zone B, Tiantan Venture Park, Huling Industrial Cluster, Jiyuan City, Henan Province Applicant after: Longyuan Xinke Electric Co.,Ltd. Address before: 454650 area C, Tiantan Pioneer Park, Huling industrial cluster, Jiyuan City, Henan Province Applicant before: Henan Province Jiyuan City Xinke Mine Electric Appliance Co.,Ltd. |
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Application publication date: 20211008 |