CN111608715A - Explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and unlocking and control method - Google Patents

Explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and unlocking and control method Download PDF

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Publication number
CN111608715A
CN111608715A CN202010483898.8A CN202010483898A CN111608715A CN 111608715 A CN111608715 A CN 111608715A CN 202010483898 A CN202010483898 A CN 202010483898A CN 111608715 A CN111608715 A CN 111608715A
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Prior art keywords
door leaf
air door
door
explosion
roadway
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CN111608715B (en
Inventor
王凯
郭朝伟
蒋曙光
尹辰辰
郝海清
奚弦
吴征艳
张卫清
邵昊
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Xuzhou Zhongkuang Keguang Machine & Electricity Technique Co ltd
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China University of Mining and Technology CUMT
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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
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/10—Air doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • E06B7/23—Plastic, sponge rubber, or like strips or tubes

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention discloses an explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking and a control method, wherein the air door comprises a roadway, an air door support fixedly connected to the periphery of the roadway, an air door is arranged on the air door support, and the air door comprises a door frame, a door leaf mechanism arranged on the door frame, a limiting reset mechanism for controlling the reset of the door leaf mechanism and an explosion overpressure monitoring system arranged in the roadway; the door leaf mechanism comprises an upper door leaf, a lower door leaf and a pulley mechanism connecting the upper door leaf and the lower door leaf; the limiting reset mechanism comprises a limiter arranged at the top of the roadway, a water tank, a water pipe and an electromagnetic valve for controlling the water pipe; the explosion overpressure monitoring system comprises a plurality of sensors, a data transmission line and a processor which are arranged in a roadway, and the explosion overpressure monitoring system is electrically connected with the limiting reset mechanism. Can open pressure release door leaf and make the shock wave pass through and do not destroy the air door when explosion shock wave reachs the air door to can automatic re-setting after the shock wave passes through, the air door can reuse many times, extension air door life.

Description

Explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and unlocking and control method
Technical Field
The invention relates to the technical field of mine roadway air doors, in particular to an explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and a control method.
Background
The air door is a ventilation structure for blocking the ventilation of a roadway in a coal mine and allowing pedestrians and vehicles to pass through. Plays an indispensable role in the underground coal mine. Once gas or coal dust explosion happens in the underground coal mine, flame high temperature, shock wave overpressure and toxic and harmful gas can be generated, so that a large number of workers in the underground limited space can be injured and killed. Meanwhile, the shock wave can cause irreversible damage to the conventional common air door, once the air door structure is broken, the air door structure can lose the function of blocking ventilation, so that the original ventilation condition in the pit is changed, the air flow short circuit, the smoke and willow disorder, the concentration of toxic and harmful gas and gas are increased, the disaster area is diffused and spread, the concentration of oxygen is reduced, the explosion disaster can be further enlarged or a secondary fire disaster is caused, and meanwhile, the underground rescue and the underground life and return personnel are adversely affected. Related researches show that the statistics of casualty results of underground gas explosion indicate that after the gas explosion overpressure wave damages the ventilation system, the proportion of suffocation death personnel caused by disordered smoke flow reaches more than 80%. And because the underground environment is complicated and is full of explosive substances such as coal dust, gas and the like, once explosion happens, secondary or multiple explosions can be caused, and a plurality of shock waves can pass through the air door in a primary explosion accident.
According to the related research of explosion propagation rules, the pressure of the shock wave is further increased when an obstacle is encountered in the explosion propagation process, so that the flame is obviously accelerated, and larger damage can be caused. When the ordinary air door is in a closed state in the roadway, the explosion strengthening effect similar to that of an obstacle can be generated.
The disadvantages of the prior art include:
1. the existing air door has no large-area pressure relief function under the condition of an explosion disaster, and shock wave power is aggravated after the explosion occurs;
2. the existing air door has no repeated use function under the condition of an explosion disaster, and the original function can be lost after the explosion disaster;
therefore, an explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and a control method are needed to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide an explosion-proof pressure relief and energy storage reset air door with electromagnetic locking and a control method to solve the problems in the prior art. The explosion-proof pressure relief and energy storage reset air door with the electromagnetic lock release and the control method can open the pressure relief door leaf to enable shock waves to pass through the air door without damaging the air door when the shock waves reach the air door after explosion happens, can automatically reset after the shock waves pass through the air door, have the continuous automatic pressure relief reset function, can repeatedly utilize the air door for many times, and can reduce the damage of the shock waves to the hinge of the door leaf and prolong the service life of the air door by the reset method.
In order to achieve the purpose, the invention provides the following scheme: an explosion-proof pressure relief and energy storage reset air door with an electromagnetic lock comprises a roadway, an air door support fixedly connected to the periphery of the roadway, wherein the air door support is provided with an air door, and the air door comprises a door frame, a door leaf mechanism arranged on the door frame, a limiting reset mechanism for controlling the reset of the door leaf mechanism and an explosion overpressure monitoring system arranged in the roadway;
the door leaf mechanism comprises an upper door leaf, a lower door leaf and a pulley mechanism for connecting the upper door leaf and the lower door leaf;
the limit reset mechanism comprises a limiter arranged at the top of the roadway, a water tank arranged on the upper door leaf, a water pipe arranged above the water tank and an electromagnetic valve for controlling the water pipe;
the explosion overpressure monitoring system comprises a plurality of sensors, a data transmission line and a processor which are arranged in a roadway, and is electrically connected with the limiting reset mechanism.
Preferably, the door frame is a square main frame, one side of the door frame is rotatably connected with the air door support, and an opening and closing lock is arranged between the other side of the door frame and the air door support.
Preferably, hinges are arranged between one side of the upper door leaf close to the top of the roadway and one side of the lower door leaf close to the bottom of the roadway and the door frame respectively, and electromagnetic locks are arranged between two sides of the upper door leaf far away from the top of the roadway and two sides of the lower door leaf far away from the bottom of the roadway and the door frame respectively.
Preferably, the sum of the heights of the upper door leaf and the lower door leaf is greater than the internal height of the door frame, the height of the upper door leaf is greater than the height of the lower door leaf, flame-retardant rubber sealing strips are arranged among the upper door leaf, the lower door leaf and the door frame, and the flame-retardant rubber sealing strips are spliced on the door frame.
Preferably, the contact part of the upper door leaf and the lower door leaf is superposed, and a flame-retardant rubber sealing strip is glued at the contact part of the upper door leaf and the lower door leaf.
Preferably, the electromagnetic lock comprises an electromagnetic lock head and an electromagnetic lock catch plate, the electromagnetic lock head is fixedly connected to the upper door leaf and the lower door leaf, and the electromagnetic lock catch plate is fixedly connected to the door frame.
Preferably, a steel wire rope is connected between the upper door leaf and the lower door leaf, a pulley is arranged on the door frame, the steel wire rope bypasses the pulley, one end of the steel wire rope is fixed on the upper door leaf, and the other end of the steel wire rope is fixed on the lower door leaf.
Preferably, the roadway roof is provided with a groove, the groove is arranged along the opening direction of the upper door leaf, a limiter and a buffer pad are fixedly connected in the groove, the water pipe and the electromagnetic valve are arranged in the groove, and the water pipe and the water tank are arranged up and down correspondingly
Preferably, the explosion overpressure monitoring system comprises a processor, a plurality of sensors and a data transmission line, the sensors are evenly distributed on the inner walls of the roadways on the two sides of the air door main body at intervals, the processor is connected with the sensors through the data transmission line, and the processor is respectively connected with the electromagnetic lock, the electromagnetic valve and the limiter through cables.
A control method for an explosion-proof pressure relief and energy storage reset air door with electromagnetic locking comprises the following steps:
1) judging the direction of the shock wave: after the front and back nth (n is 1) sensors of the air door sense dangerous pressure signals, a processor judges that the direction of the sensor sensing the dangerous pressure signals is a shock wave pressure direction, the processor enters an emergency state and waits for other sensor signals in the same direction, and the counting mode of the sensors is that the sensors count towards the direction of the air door body from two sides of a roadway and is 1 and 2 … m … n respectively;
2) judging the explosion occurrence position and the danger degree: if n is larger than or equal to m, the explosion is positioned in the non-calculable area, and the step 3) is executed; if 1<n<m, determining that the explosion occurs in a calculable area, and calculating the propagation law of the shock wave by using the occurrence time difference of dangerous signals between the two sensors, wherein the speed calculation method comprises the following steps:
Figure BDA0002518227260000041
where Δ x is the distance between the two sensors, Tp front-Tp is behindThe shock wave passes through the time difference between the two sensors to obtain the speed of each section, and then the whole fitting and the pressure are carried outAnd (3) directly fitting the rule by using sensor data, determining the maximum impact pressure borne by the air door according to the design parameters of the air door, multiplying the maximum impact pressure by a coefficient 0.1 to serve as a dangerous pressure value, and executing the step 3) if the calculation result is greater than the dangerous pressure value, and not doing any action if the result is less than the dangerous pressure value.
3) Starting a pressure relief air door: the processor sends out an air door opening signal to control the electromagnetic locks of the two door leaves to be invalid, and the upper door leaf and the lower door leaf are respectively opened upwards and downwards under the action of shock waves; when the upper door leaf reaches the groove of the top plate of the roadway, the processor triggers the limiting device to fix the upper door leaf at the top of the roadway, the processor triggers the electromagnetic valve, the electromagnetic valve of the water pipe is opened, and water flow enters the water tank.
4) The shock wave was confirmed by: when the downwind direction sensor in the propagation direction of the shock wave detects a dangerous pressure signal, the shock wave is considered to pass through the air door at the moment, when all sensors in the downwind direction of the air door main body cannot sense the dangerous pressure signal and the dangerous pressure signal does not appear within a period of time, the shock wave is considered to completely pass through the air door main body and the oscillation process is finished;
5) the door leaf resets: when the shock wave completely passes through the air door, the processor releases the emergency state. After waiting for water level in the water storage tank to reach the preset requirement, the processor sends a signal to the limit stopper in the groove of the roadway roof, and the limit of the door leaf position is removed. The upper door leaf rotates downwards under the action of the gravity of the water storage tank at the tail end and the action of the gravity of the upper door leaf, and begins to reset, and in the process, the upper door leaf pulls the steel wire rope, and the lower door leaf is pulled to rotate upwards through the pulley, so that the upper door leaf begins to reset; when the door leaf is closed and the cushion pad is compressed, and the sensor sends a shock wave passing signal, the electromagnetic lock on the door frame is electrified and attracted, so that the door leaf is tightly closed; the air door is restored to the initial state to respond to the next explosion impact; after the air door is closed, water in the water tank naturally flows out, and the air door is reset; the duration of the water storage process is 20-40s, and the reset time of the air door is less than 1 min.
The invention discloses the following technical effects:
1. according to the invention, through the arrangement of the door leaf mechanism and the explosion overpressure monitoring system, when a roadway explodes, the door leaf can be opened to release pressure, so that a ventilation facility is prevented from being damaged to cause a greater disaster, and the purpose of protecting an air door is achieved.
2. After the pressure relief is finished, the door leaf can be automatically reset through the limiting reset mechanism.
3. Through set up electromagnetic lock buckle and buffer pad in the recess on the tunnel wall, inlay in the tunnel roof after making the door leaf open, reduce the impact wave to the door leaf influence.
4. The shaft joint between door frame one side and the air door support sets up the lock that opens and shuts between door frame opposite side and the air door support, can realize that the air door is whole to be opened, and the personnel of being convenient for pass through from the tunnel at ordinary times during operation.
5. Utilize the mobility of water, only confront air door self gravity when making the shock wave act on the air door, then utilize the gravity of air door gravity and water when reseing, increase and reset the success rate, reduce the hinge atress, increase air door life.
6. The energy of the shock waves is converted and stored into the gravitational potential energy of the door leaf for the reset of the door leaf.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the damper construction of the present invention;
FIG. 2 is a schematic view illustrating an opened state of an upper door leaf and a lower door leaf according to the present invention;
FIG. 3 is a schematic view of the damper of the present invention being fully open;
FIG. 4 is a schematic view of the roadway, sensor, data transmission line and damper arrangement of the present invention;
FIG. 5 is a flow chart of damper operation;
FIG. 6 is a schematic view of the stopper structure;
FIG. 7 is a schematic view showing the arrangement of a sink and a cushion pad in a top plate groove;
FIG. 8 is a schematic view of the overlapped portion of the upper door leaf and the lower door leaf;
fig. 9 is a top view of the arrangement within the recess of the top plate.
Wherein, 1 is the tunnel, 2 is the air door support, 3 is the door frame, 4 is last door leaf, 5 is lower door leaf, 6 is the lock that opens and shuts, 7 is the electromagnetic lock tapered end, 8 is the electromagnetic lock buckle, 9 is the basin, 10 is wire rope, 11 is fire-retardant rubber sealing strip, 12 is the hinge, 13 is the pulley, 14 is the water pipe, 15 is the solenoid valve, 16 is the blotter, 17 is the stopper, 17.1 is the stopper main part, 17.2 is the spring, 17.3 is the control lever, 17.4 is the dop, 18 is the recess, 19 is the sensor, 20 is data transmission line, L is the non-computable region.
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 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides an explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking, which comprises a roadway 1 and an air door support 2 fixedly connected to the roadway 1 for a circle, wherein the air door support 2 is provided with an air door, and the air door comprises a door frame 3, a door leaf mechanism arranged on the door frame 3, a limiting reset mechanism for controlling the reset of the door leaf mechanism and an explosion overpressure monitoring system arranged in the roadway 1;
the door leaf mechanism comprises an upper door leaf 4, a lower door leaf 5 and a pulley mechanism connecting the upper door leaf 4 and the lower door leaf 5;
the limiting reset mechanism comprises a limiter 17 arranged at the top of the roadway 1, a water tank 9 arranged on the upper door leaf 4, a water pipe 14 arranged above the water tank 9 and an electromagnetic valve 15 for controlling the water pipe 14. When the upper door leaf 4 is positioned in the groove 18 after being opened, the outlet of the water pipe 14 is over against the inlet of the water storage tank 9, and the opening and closing of the water pipe 14 are controlled by the electromagnetic valve 15.
The explosion overpressure monitoring system comprises a plurality of sensors 19, a data transmission line 20 and a processor which are arranged in the roadway 1, and the explosion overpressure monitoring system is electrically connected with the limiting reset mechanism.
Further preferred scheme, door frame 3 is the square type main frame, rotates between 3 one sides of door frame and the air door support 2 to be connected, is provided with the lock 6 that opens and shuts between 3 opposite sides of door frame and the air door support 2, and the whole opening of air door when personnel pass through from tunnel 1 through lock 6 that opens and shuts at ordinary times can be realized.
Further preferred scheme, the hinge 12 is provided with between one side that the door leaf 4 is close to 1 top in tunnel, one side that the door leaf 5 is close to 1 bottom in tunnel respectively and the door frame 3 down, and the both sides that the both sides at 1 top in tunnel, the both sides that the door leaf 5 is kept away from 1 bottom in tunnel of last door leaf 4 are provided with the electromagnetic lock respectively and between the door frame 3 down.
Further preferred scheme, the high sum of last door leaf 4, 5 high sum of lower door leaves is greater than 3 inside height of door frame, and the height that goes up door leaf 4 is greater than 5 high of lower door leaves, has laid fire-retardant rubber sealing strip 11 between last door leaf 4, lower door leaf 5 and the door frame 3, and fire-retardant rubber sealing strip 11 splices on door frame 3, and wire rope 10 fixed position equals with homonymy hinge 12 distance between upper and lower two door leaves, opens the door under the normality and does not receive wire rope 10 to influence. When the upper door leaf 4 is opened to release pressure and then starts to be closed to reset, the steel wire rope 10 is pulled, and the lower door leaf 5 is pulled through the pulley 13 to perform corresponding linkage resetting movement.
Further preferred scheme, the coincidence of last door leaf 4 and lower door leaf 5 contact site, and last door leaf 4 has glued flame retardant rubber sealing strip 11 with lower door leaf 5 contact site, and flame retardant rubber sealing strip 11 can prevent to the separation of intensity of a fire when taking place the shock wave explosion, has slowed down stretching of intensity of a fire.
Further preferred scheme, the electromagnetic lock includes electromagnetic lock tapered end 7 and electromagnetism hasp board 8, and electromagnetic lock tapered end 7 rigid coupling is on last door leaf 4 and lower door leaf 5, and electromagnetic lock buckle 8 rigid coupling is on door frame 3.
Further preferred scheme is connected with wire rope 10 between upper door leaf 4, the lower door leaf 5, is provided with pulley 13 on the door frame 3, and wire rope 10 walks around pulley 13, and wire rope 10 one end is fixed on upper door leaf 4, and wire rope 10 other end is fixed on lower door leaf 5.
Further preferred scheme, the roof of roadway 1 is provided with a groove 18, the groove 18 is arranged along the opening direction of upper door leaf 4, a limiter 17 and a buffer pad 16 are fixedly connected in the groove 18, a water pipe 14 and an electromagnetic valve 15 are arranged in the groove 18, the water pipe 14 and the water tank 9 are correspondingly arranged up and down, the limiter 17 comprises a limiter main body 17.1, a spring 17.2, a control rod 17.3 and a clamping head 17.4, the limiter main body 17.1 is fixedly connected with the spring 17.2, the end part of the limiter main body 17.1 is fixedly connected with the clamping head 17.4, the clamping head 17.4 is used for limiting the upper door leaf 4, when shock wave passes through, the processor gives an order to the limiter 17, the control rod 17.3 pushes the limiter main body 17.1, the chuck 17.4 moves away from the air door, under the action of gravity of the water tank 9, the upper door leaf 4 is automatically reset, the lower door leaf 5 is reset through the steel wire rope 10 and the pulley 13 when the upper door leaf 4 is reset, the upper door leaf and the lower door leaf are opened by means of energy of shock waves, and the shock waves drive the upper door leaf 4 and the lower door leaf 5 to be automatically reset simultaneously through the gravity of the water tank 9.
Further preferred scheme, explosion overpressure monitored control system includes treater, a plurality of sensor 19 and data transmission line 20, and a plurality of sensor 19 interval evenly lays on the tunnel 1 inner wall of air door main part both sides, and the treater is connected with a plurality of sensor 19 through data transmission line 20, and the treater passes through the cable and is connected with electromagnetic lock, solenoid valve 15, stopper 17 respectively.
A control method for an explosion-proof pressure relief and energy storage reset air door with electromagnetic locking comprises the following steps:
1) judging the direction of the shock wave: after the front and back n (n > -1) th sensors 19 of the air door sense dangerous pressure signals, the processor judges that the direction of the sensor 19 which senses the dangerous pressure signals firstly is a shock wave pressure direction, the processor enters an emergency state and waits for other sensors 19 signals in the same direction, and the counting mode of the sensors 19 is that the sensors count from two sides of the roadway 1 to the direction of the air door main body and are respectively 1 and 2 … m … n;
2) judging the explosion occurrence position and the danger degree: if n is larger than or equal to m, the explosion is positioned in the non-calculable area, and the step 3) is executed; if 1<n<m then determines that the explosion occurred in the calculable area, using two transmissionsCalculating the propagation law of the shock wave by the occurrence time difference of the dangerous signals between the sensors 19, wherein the speed calculation method comprises the following steps:
Figure BDA0002518227260000101
where Δ x is the distance between the two sensors 19, Tp front-Tp is behindAnd (3) performing integral fitting after the shock wave passes through the time difference between the two sensors 19 to obtain the speed of each section, directly fitting the pressure law by using the data of the sensors 19, determining the maximum shock pressure borne by the air door according to the design parameters of the air door, multiplying the maximum shock pressure by a coefficient of 0.1 to serve as a dangerous pressure value, and executing step 3) if the calculation result is greater than the dangerous pressure value, and not performing action if the result is less than the dangerous pressure value.
3) Starting a pressure relief air door: the processor sends an air door opening signal to control the electromagnetic locks of the two door leaves to be invalid, and the upper door leaf 4 and the lower door leaf 5 are respectively opened upwards and downwards under the action of shock waves; when the upper door leaf 4 reaches the top plate groove 18 of the roadway 1, the processor triggers the limiter 17 to fix the upper door leaf 4 at the top of the roadway 1, the processor triggers the electromagnetic valve 15, the electromagnetic valve 15 of the water pipe 14 is opened, and water flows enter the water tank 9.
4) The shock wave was confirmed by: when the downwind direction sensor 19 in the propagation direction of the shock wave detects a dangerous pressure signal, the shock wave is considered to pass through the air door at the moment, when all sensors 19 in the downwind direction of the air door main body cannot sense the dangerous pressure signal and the dangerous pressure signal does not appear within a period of time, the shock wave is considered to completely pass through the air door main body and the oscillation process is finished;
5) the door leaf resets: when the shock wave completely passes through the air door, the processor releases the emergency state. After waiting for the water level in the water storage tank 9 to reach the preset requirement, the processor sends a signal to the stopper 17 in the groove 18 of the top plate of the roadway 1, and the door leaf position limitation is removed. The upper door leaf 4 rotates downwards under the action of the gravity of the water storage tank 9 at the tail end and the action of the gravity of the upper door leaf 4, and begins to reset, in the process, the upper door leaf 4 pulls the steel wire rope 10, the lower door leaf 5 is pulled to rotate upwards through the pulley 13, and the upper door leaf begins to reset; when the door leaf is closed and the cushion 16 is pressed, and the sensor 19 sends out a shock wave passing signal, the electromagnetic lock on the door frame 3 is electrified and sucked, so that the door leaf is tightly closed; the air door is restored to the initial state to respond to the next explosion impact; after the air door is closed, water in the water tank 9 naturally flows out, and the air door is reset; the duration of the water storage process is 30s, and the reset time of the air door is less than 1 min.
The door frame 3 and the door support 2 between the lock 6 open and close the whole air door when personnel pass through the tunnel 1 at ordinary times, realize personnel's passing through.
The method comprises the steps that an explosion overpressure monitoring system obtains an explosion overpressure signal and then carries out operation judgment, when the overpressure is judged to damage an air door, information is sent to control an electromagnetic lock to be released from closing, a pressure relief air door is opened, large-section pressure relief is realized, and after the passage of a shock wave is detected, a limit reset mechanism acts to automatically reset the door leaf, so that the air door can be continuously used for multiple times; according to the invention, the explosion overpressure monitoring system is used for judging the danger degree of the shock wave in the roadway 1, whether the air door needs to be opened or not is automatically selected, so that the effect on the air door is achieved, the air door can be continuously used for multiple times, and the service life of the air door is prolonged.
In this embodiment, the processor is preferably a CPU224 (siemens), an EM321 digital-to-analog converter is mounted, the electromagnetic lock is preferably JT-3000 (shanghai cotinus coggygria gating technologies ltd), the explosion-proof pressure sensor 19 is preferably BST6600-FB (west-son automation), the processor is disposed in an explosion-proof box (not shown in the figure), the sensor 19 is connected with the processor through a four-core shielded cable, the electromagnetic lock is connected with a safety barrier (not shown in the figure) through a five-core cable, and the safety barrier is connected with the processor through a four-core cable.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (10)

1. An explosion-proof pressure relief and energy storage reset air door with an electromagnetic lock comprises a roadway (1) and an air door support (2) fixedly connected to the periphery of the roadway (1), and is characterized in that the air door support (2) is provided with an air door, and the air door comprises a door frame (3), a door leaf mechanism arranged on the door frame (3), a limiting reset mechanism for controlling the reset of the door leaf mechanism and an explosion overpressure monitoring system arranged in the roadway (1);
the door leaf mechanism comprises an upper door leaf (4), a lower door leaf (5) and a pulley mechanism for connecting the upper door leaf (4) and the lower door leaf (5);
the limiting reset mechanism comprises a limiter (17) arranged at the top of the roadway (1), a water tank (9) arranged on the upper door leaf (4), a water pipe (14) arranged above the water tank (9) and an electromagnetic valve (15) for controlling the water pipe (14);
the explosion overpressure monitoring system comprises a plurality of sensors (19) arranged in a roadway (1), a data transmission line (20) and a processor, and is electrically connected with the limiting reset mechanism.
2. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking according to claim 1, characterized in that: the door frame (3) is a square main frame, one side of the door frame (3) is rotatably connected with the air door support (2), and an opening and closing lock (6) is arranged between the other side of the door frame (3) and the air door support (2).
3. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking according to claim 1, characterized in that: hinges (12) are arranged between one side, close to the top of the roadway (1), of the upper door leaf (4) and one side, close to the bottom of the roadway (1), of the lower door leaf (5) and the door frame (3), electromagnetic locks are arranged between two sides, far away from the top of the roadway (1), of the upper door leaf (4) and two sides, far away from the bottom of the roadway (1), of the lower door leaf (5) and the door frame (3).
4. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking as claimed in claim 3, wherein: the height sum of the upper door leaf (4) and the lower door leaf (5) is larger than the internal height of the door frame (3), the height of the upper door leaf (4) is larger than the height of the lower door leaf (5), flame-retardant rubber sealing strips (11) are arranged among the upper door leaf (4), the lower door leaf (5) and the door frame (3), and the flame-retardant rubber sealing strips (11) are spliced on the door frame (3).
5. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking as claimed in claim 3, wherein: the contact part of the upper door leaf (4) and the lower door leaf (5) is overlapped, and the contact part of the upper door leaf (4) and the lower door leaf (5) is glued with a flame-retardant rubber sealing strip (11).
6. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking as claimed in claim 3, wherein: the electromagnetic lock comprises an electromagnetic lock head (7) and an electromagnetic lock catch plate (8), the electromagnetic lock head (7) is fixedly connected to the upper door leaf (4) and the lower door leaf (5), and the electromagnetic lock catch plate (8) is fixedly connected to the door frame (3).
7. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking as claimed in claim 3, wherein: a steel wire rope (10) is connected between the upper door leaf (4) and the lower door leaf (5), a pulley (13) is arranged on the door frame (3), the steel wire rope (10) bypasses the pulley (13), one end of the steel wire rope (10) is fixed on the upper door leaf (4), and the other end of the steel wire rope (10) is fixed on the lower door leaf (5).
8. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking as claimed in claim 3, wherein: a top plate of the roadway (1) is provided with a groove (18), the groove (18) is arranged along the opening direction of the upper door leaf (4), a stopper (17) and a buffer pad (16) are fixedly connected into the groove (18), the water pipe (14) and the electromagnetic valve (15) are arranged in the groove (18), and the water pipe (14) and the water tank (9) are arranged up and down correspondingly.
9. The explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking according to claim 1, characterized in that: the explosion overpressure monitoring system comprises a processor, a plurality of sensors (19) and data transmission lines (20), wherein the sensors (19) are uniformly arranged on the inner walls of the roadways (1) on two sides of the air door main body at intervals, the processor is connected with the sensors (19) through the data transmission lines (20), and the processor is respectively connected with the electromagnetic lock, the electromagnetic valve (15) and the limiter (17) through cables.
10. A method for controlling an explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking, which is characterized in that the method for controlling the explosion-proof pressure relief and energy storage reset air door with electromagnetic unlocking according to any one of claims 1 to 9 is adopted, and comprises the following steps:
1) judging the direction of the shock wave: after the front and back n (n > -1) th sensors (19) of the air door sense dangerous pressure signals, a processor judges that the direction of the sensor (19) which senses the dangerous pressure signals firstly is a shock wave pressure direction, the processor enters an emergency state and waits for signals of other sensors (19) in the same direction, and the counting modes of the sensors (19) are that the sensors count towards the direction of the air door body from two sides of a roadway (1) and are 1 and 2 … m … n respectively;
2) judging the explosion occurrence position and the danger degree: if n is larger than or equal to m, the explosion is positioned in the non-calculable area, and the step 3) is executed; if 1<n<m, determining that the explosion occurs in a calculable area, and calculating the propagation law of the shock wave by using the occurrence time difference of dangerous signals between two sensors (19), wherein the speed calculation method comprises the following steps:
Figure FDA0002518227250000031
where Δ x is the distance between the two sensors (19), Tp front-Tp is behindPerforming integral fitting after the shock wave passes through the time difference between the two sensors (19) to obtain the speed of each section, directly fitting the pressure law by using the data of the sensors (19), determining the maximum shock pressure capable of being borne by the air door according to the design parameters of the air door, multiplying the maximum shock pressure by a coefficient of 0.1 to serve as a dangerous pressure value, executing the step 3 if the calculation result is greater than the dangerous pressure value, and not performing action if the result is less than the dangerous pressure value;
3) starting a pressure relief air door: the processor sends an air door opening signal to control the electromagnetic locks of the two door leaves to be invalid, and the upper door leaf (4) and the lower door leaf (5) are respectively opened upwards and downwards under the action of shock waves; when the upper door leaf (4) reaches the top plate groove (18) of the roadway (1), the processor triggers the limiting device (17) to fix the upper door leaf (4) at the top of the roadway (1), the processor triggers the electromagnetic valve (15), the electromagnetic valve (15) of the water pipe (14) is opened, and water flows into the water tank (9);
4) the shock wave was confirmed by: when the downwind direction sensor (19) in the propagation direction of the shock wave detects a dangerous pressure signal, the shock wave is considered to pass through the air door at the moment, when all sensors (19) in the downwind direction of the air door main body cannot sense the dangerous pressure signal and the dangerous pressure signal does not appear within a period of time, the shock wave is considered to completely pass through the air door main body and the oscillation process is finished;
5) the door leaf resets: when the shock wave completely passes through the air door, the processor relieves the emergency state, after the water level in the water storage tank (9) meets the preset requirement, the processor sends a signal to a stopper (17) in a top plate groove (18) of the roadway (1), the position limitation of the door leaf is relieved, the upper door leaf (4) rotates downwards under the action of the gravity of the water storage tank (9) at the tail end and the action of the self gravity to start to reset, in the process, the upper door leaf (4) pulls the steel wire rope (10), and the lower door leaf (5) is pulled to rotate upwards through the pulley (13) to start to reset; when the door leaf is closed and the cushion pad (16) is pressed, and the sensor (19) sends out a shock wave passing signal, the electromagnetic lock on the door frame (3) is electrified and sucked, so that the door leaf is tightly closed; the air door is restored to the initial state to respond to the next explosion impact; after the air door is closed, water in the water tank (9) naturally flows out, and the air door is reset; the duration of the water storage process is 20-40s, and the reset time of the air door is less than 1 min.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459783A (en) * 2020-12-23 2021-03-09 莱芜莱新铁矿有限责任公司 Safety device for mining under filling body

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2740939Y (en) * 2004-10-13 2005-11-16 亿昇事业有限公司 Pressure reducing throttle structure
CN101370997A (en) * 2006-01-19 2009-02-18 法克有限公司 Full opentng and reclosable explosion vent apparatus
CN101824998A (en) * 2009-12-06 2010-09-08 杜志刚 Double-direction relief damper
EP2153004B1 (en) * 2007-05-15 2014-02-26 Ingersoll Rand Security Technologies Blast door
CN103670515A (en) * 2013-12-26 2014-03-26 中国矿业大学 Underground coal mine air-door fault early warning system
CN203742648U (en) * 2013-09-30 2014-07-30 新汶矿业集团有限责任公司鄂庄煤矿 Opening and decompression linkage system of roadway damper
CN105927273A (en) * 2016-05-26 2016-09-07 辽宁工程技术大学 Fast closing venting door of coal mine fire area
CN205618039U (en) * 2016-05-16 2016-10-05 绍兴市银安人防设备有限公司 Anti -blast movable door
EP3243997A1 (en) * 2016-05-10 2017-11-15 Elkuch Elsenring AG Escape door
CN108662162A (en) * 2018-08-17 2018-10-16 南通艾迈特机械有限公司 A kind of air door
CN208089348U (en) * 2017-12-19 2018-11-13 山西省安瑞风机电气股份有限公司 A kind of mining runback dry intelligent explosion proof door
CN108915757A (en) * 2018-07-24 2018-11-30 内蒙古科技大学 A kind of coal and gas explosion Active Defending System Against and method
CN208441885U (en) * 2018-05-17 2019-01-29 贵州盘江精煤股份有限公司 A kind of relief damper with pressure relief device for coal mine
CN209655500U (en) * 2019-02-28 2019-11-19 陕西卓昊建筑设计工程有限公司 A kind of decompression venting of dust explosion channel for industrial security protection
CN110886622A (en) * 2019-12-18 2020-03-17 淮南久诺矿用设备加工有限公司 Lotus-shaped mine explosion door
CN111075506A (en) * 2020-03-02 2020-04-28 华北科技学院 Connect special explosion vent of mine electromechanics of stabilizing

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2740939Y (en) * 2004-10-13 2005-11-16 亿昇事业有限公司 Pressure reducing throttle structure
CN101370997A (en) * 2006-01-19 2009-02-18 法克有限公司 Full opentng and reclosable explosion vent apparatus
EP2153004B1 (en) * 2007-05-15 2014-02-26 Ingersoll Rand Security Technologies Blast door
CN101824998A (en) * 2009-12-06 2010-09-08 杜志刚 Double-direction relief damper
CN203742648U (en) * 2013-09-30 2014-07-30 新汶矿业集团有限责任公司鄂庄煤矿 Opening and decompression linkage system of roadway damper
CN103670515A (en) * 2013-12-26 2014-03-26 中国矿业大学 Underground coal mine air-door fault early warning system
EP3243997A1 (en) * 2016-05-10 2017-11-15 Elkuch Elsenring AG Escape door
CN205618039U (en) * 2016-05-16 2016-10-05 绍兴市银安人防设备有限公司 Anti -blast movable door
CN105927273A (en) * 2016-05-26 2016-09-07 辽宁工程技术大学 Fast closing venting door of coal mine fire area
CN208089348U (en) * 2017-12-19 2018-11-13 山西省安瑞风机电气股份有限公司 A kind of mining runback dry intelligent explosion proof door
CN208441885U (en) * 2018-05-17 2019-01-29 贵州盘江精煤股份有限公司 A kind of relief damper with pressure relief device for coal mine
CN108915757A (en) * 2018-07-24 2018-11-30 内蒙古科技大学 A kind of coal and gas explosion Active Defending System Against and method
CN108662162A (en) * 2018-08-17 2018-10-16 南通艾迈特机械有限公司 A kind of air door
CN209655500U (en) * 2019-02-28 2019-11-19 陕西卓昊建筑设计工程有限公司 A kind of decompression venting of dust explosion channel for industrial security protection
CN110886622A (en) * 2019-12-18 2020-03-17 淮南久诺矿用设备加工有限公司 Lotus-shaped mine explosion door
CN111075506A (en) * 2020-03-02 2020-04-28 华北科技学院 Connect special explosion vent of mine electromechanics of stabilizing

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
周西华等: "煤矿火区快速封闭泄爆门研究", 《中国安全生产科学技术》 *
殷帅等: "防爆盖自动启闭控制在煤矿应急救援中的应用探讨", 《煤炭科学技术》 *
王海福，冯顺山编: "《防爆学原理》", 30 September 2004, 北京理工大学出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459783A (en) * 2020-12-23 2021-03-09 莱芜莱新铁矿有限责任公司 Safety device for mining under filling body
CN112459783B (en) * 2020-12-23 2023-01-17 莱芜莱新铁矿有限责任公司 Safety device for mining under filling body

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