CN102061929B - Blowback fast explosion suppression device for coal mining working face - Google Patents
Blowback fast explosion suppression device for coal mining working face Download PDFInfo
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- CN102061929B CN102061929B CN2010105531653A CN201010553165A CN102061929B CN 102061929 B CN102061929 B CN 102061929B CN 2010105531653 A CN2010105531653 A CN 2010105531653A CN 201010553165 A CN201010553165 A CN 201010553165A CN 102061929 B CN102061929 B CN 102061929B
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Abstract
The invention provides a blowback fast explosion suppression device for a coal mining working face, and relates to a blowback fast explosion suppression device, which is used for solving the problem that shock wave and flame caused by explosion can not be effectively prevented in the existing coal mining working face. The blowback fast explosion suppression device is equipped with an explosion suppression door and two explosion suppression windows; and in case of explosion, a control system controls the explosion suppression door and the two explosion suppression windows to be closed so as to play the role of suppressing explosion. The blowback fast explosion suppression device is applicable to a roadway of a coal mine.
Description
Technical field
The present invention relates to the quick device of blast prevention of a kind of gas backwash formula.
Background technology
Gas and dust explosion is the major safety problems that the coal production industry needs to be resolved hurrily, and carries out the research work of its prevention and control very necessary.Since " six or five ", serial flame proof, explosion suppression device that China succeeds in developing and in coal mining enterprise, uses according to the difference of datonation-inhibition mode, can be divided into the datonation-inhibition and self-action datonation-inhibition two big classes of passive type.
The passive type that coal mining enterprise adopts intercepts quick-fried technology and mainly contains flame proof tank, water bag and stone-dust barrier etc.Its principle is to utilize the Explosion suppressant of energy in being arranged on the detonation propagation passage in advance of blast bow wave self; Form the datonation-inhibition band of certain section, put out the propagating flame that arrives soon after, bow wave energy simultaneously dissipates; Prevent to form excess pressure, reach datonation-inhibition purpose.A large amount of crash analyses show that these measures can not effectively play a role when accident takes place.For example: the moisture of tank evaporates easily, lacks, and need often wash by water, change water, has increased workman's workload.Especially the exploiting field big at air quantity, that temperature is high is prone to sneak into mine dust in the water, cause fire extinguishing water smoke can not effectively cut off the propagation of explosive flame because of water shortage.Stope drift active workings water bag canopy should adopt the mode that breaks off relations and hang by design code, fastens on beam with iron wire but the water bag canopy in the practical application is many, makes that flame proof facility atomizing when action of this passive form is insufficient, greatly reduces the flame proof effect.In addition, if it is low excessively to intercept the operating pressure of quick-fried device, promptly sensitivity is too high; Then explosive flame arrives, and apart from intercepting quick-fried device at a distance, the low surge of forerunner's compression wave can make the quick-fried device of obstruct begin action;, flame just discharged inhibiting agent before arriving, like this when flame arrives the quick-fried setting position of obstruct, because inhibiting agent is discharged in advance; And, only be left to be suspended in the lower inhibiting agent of concentration in the space because of the action of gravity major part has sunk on the base plate in tunnel.Possibly exceed explosion limit though contain the methane gas of inhibiting agent; But because explosive flame has higher cohesive strength and globality preferably; Flame still maybe be under the promotion of huge explosion product pressure; Pass this zone and ignite the gas mist of front and continue to propagate forward, intercept quick-fried device and do not have corresponding effect.If intercept the pressure that the operating pressure of quick-fried device is higher than forerunner's compression wave, or the action that intercepts quick-fried device has surpassed flame time delay and has arrived the required time of device.The inhibiting agent of its release will drop to the flame zone rear portion, even drops on after the flame zone, and the flame front portion that then is not suppressed the agent influence will continue to propagate forward, intercepts quick-fried device and loses the quick-fried effect that intercepts.
The datonation-inhibition know-why of self-action is in time to survey detonator signal through responsive original papers such as sensors; And through the action of control module rapid triggering Explosion suppressant flusher; Spray Explosion suppressant with modes such as high pressure injection or blast sprinklings, stamp out the flames or the attenuate blast bow wave, accomplish datonation-inhibition.Yet high speed communication process for the detonation formula; If still adopt the datonation-inhibition technology of above-mentioned self-action; Then require to have higher valve of sensitivity and more effective Explosion suppressant; A series of Explosion suppressant injection apparatus is set up in tunnel being prone to generation gas explosion along the line, communicates with the tunnel through electronically controlled high sensitivity valve.In case occur blast somewhere, the valve of its upstream and downstream is opened immediately automatically, Explosion suppressant sprays into the tunnel, suppresses spreading of blast.In present stage, even technical can meeting the demands, its expensive cost also can make most applying units hang back, and under coal mining enterprise's existence conditions, can not realize especially.The datonation-inhibition technology of self-action exists difficult accurate control flame ripple and the shock wave problem time of advent equally, and intercepting quick-fried device, to play the quick-fried action condition of obstruct limited.
This shows; Existing datonation-inhibition facility of passive type and the datonation-inhibition facility of self-action are owing to receive the restriction of subsurface environment; Various unexpected problems have appearred, and especially extremely undesirable to weak blast (pressure is low) and the datonation-inhibition effect of stronger blast (pressure is high), influenced the reliability of gas explosion control technology.In addition, datonation-inhibition facility of existing passive type and self-action be datonation-inhibition to be disposable explosion suppression device, does not possess repeat function property, to the subsequent explosion after the well shooting or repeatedly explosion accident lose datonation-inhibition effect.
Summary of the invention
The present invention can't effectively stop impact generated by explosion to involve the problem of flame in order to solve in the existing channel of coal mining working surface, thereby provides a kind of channel of coal mining working surface gas backwash formula quick device of blast prevention.
The quick device of blast prevention of channel of coal mining working surface gas backwash formula; It comprises support frame, explosion arrestment door, explosion arrestment plate, two fan explosion arrestment windows, crossbeam, perpendicular overarm, electromagnet armature, spring and control system; Support frame is divided into upper and lower two parts through crossbeam; The left side of explosion arrestment plate is fixed on the left side of support frame lower part, and the right edge of the right edge of said explosion arrestment plate, crossbeam and support frame forms doorframe, and explosion arrestment door and said doorframe are hinged; The top of perpendicular overarm and the middle part of lower edge, support frame top flexibly connect, and the other end of perpendicular overarm contacts with the upper surface of crossbeam; The top of support frame is divided into left and right two parts through perpendicular overarm, and said two fan explosion arrestment windows are hinged on the and arranged on left and right sides of perpendicular overarm respectively; And its articulated elements is provided with electromagnet armature and spring; The control system comprises control module, ultraviolet inductor and gas generation apparatus; The induced signal output of ultraviolet ray inductor is connected with the induced signal input of control module, and the control signal output of control module is connected with the control signal input of gas generation apparatus; Said gas generation apparatus is arranged on the explosion arrestment door and opens the face place.
Beneficial effect: when the present invention took place in blast, explosion arrestment door and explosion arrestment window were closed simultaneously, and the blast that can stop blast to produce effectively involves flame.And can thereby the different parts that a plurality of devices of blast prevention be separately positioned on the colliery underworkings be realized the associating explosion arrestment, intercept quick-fried better effects if.It is quick that the present invention has the closed action of explosion arrestment door and explosion arrestment window, intercepts the strong advantage of quick-fried performance.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the principle schematic of control section of the present invention.
The specific embodiment
The specific embodiment one, combination Fig. 1 and Fig. 2 explain this specific embodiment; The quick device of blast prevention of channel of coal mining working surface gas backwash formula; It comprises support frame 1, explosion arrestment door 2, explosion arrestment plate 3, two fan explosion arrestment windows 4, crossbeam 5, perpendicular overarm 6, electromagnet armature 14, spring 15 and control system; Support frame 1 is divided into upper and lower two parts through crossbeam 5; The left side of explosion arrestment plate 3 is fixed on the left side of support frame 1 lower part, and the right edge of the right edge of said explosion arrestment plate 3, crossbeam 5 and support frame 1 forms doorframe, and explosion arrestment door 2 is hinged with said doorframe; The top of perpendicular overarm 6 and the middle part of lower edge, support frame 1 top flexibly connect, and the other end of perpendicular overarm 6 contacts with the upper surface of crossbeam 5; The top of support frame 1 is divided into left and right two parts through perpendicular overarm 6, and said two fan explosion arrestment windows 4 are hinged on the and arranged on left and right sides of perpendicular overarm 6 respectively; And its articulated elements is provided with electromagnet armature 14 and spring 15; The control system comprises control module 11, ultraviolet inductor 12 and gas generation apparatus 13; The induced signal output of ultraviolet ray inductor 12 is connected with the induced signal input of control module 11, and the control signal output of control module 11 is connected with the control signal input of gas generation apparatus 13; Said gas generation apparatus 13 is fixed on explosion arrestment door 2 and opens the face place, can be arranged on explosion arrestment door 2 and open on the wall of face side.
This embodiment is fixed in the tunnel under the coal mine through a plurality of fixtures 16 in use.
All very desirable in this embodiment to weak blast (pressure is low) and the datonation-inhibition effect of stronger blast (pressure is high), improved the reliability of gas explosion control technology.And the present invention after to well shooting subsequent explosion or repeatedly explosion accident still have datonation-inhibition effect.
The difference of the specific embodiment two, this specific embodiment and the quick device of blast prevention of the specific embodiment one described channel of coal mining working surface gas backwash formula is; Explosion arrestment door 2 is made up of with iron wire stratum reticulare 22 foamed ceramics basic unit 21, and said iron wire stratum reticulare 22 covers and is fixed on inside and outside two faces of foamed ceramics basic unit 21.
In this embodiment, explosion arrestment plate 3 is identical with the material of explosion arrestment door 2.
Coal mine gas, coal dust intercept harm and the influence that the effect of quick-fried device is flame front high temperature sintering, positive pressure of shock wave destruction and roadway toxic and harmful when eliminating gas, coal-dust explosion automatically in this embodiment; Should possess repeat function and usability simultaneously, can be to subsequent explosion after the well shooting or the repeatedly quick-fried effect of blast performance obstruct.In view of foamed ceramics has flame quenching effect and shock wave consumption, therefore utilize its characteristics to intercept gas explosion flame and shock Wave.Explosive flame is suppressed in the blast regional area, avoids greater disaster.
The difference of the specific embodiment three, this specific embodiment and the specific embodiment one or the quick device of blast prevention of two described channel of coal mining working surface gas backwash formulas is; It also comprises N impact liner 7; A said N impact liner 7 distributes and is fixed on the right edge of explosion arrestment plate 3, and said N is a positive integer.
The difference of the specific embodiment four, this specific embodiment and the quick device of blast prevention of the specific embodiment three described channel of coal mining working surface gas backwash formulas is; But it also comprises the swing motor 19 of swing, but the swinging axle of the swing motor 19 of said swing contacts with perpendicular overarm 6; But the control signal input of the swing motor 19 of said swing is connected with the control signal output of control module 11.
But the perpendicular overarm of the swing motor 19 brakings knee-action of the swing described in this embodiment makes the top of support frame 1 realize full open, makes things convenient for the transportation of main equipment.
The difference of the specific embodiment five, this specific embodiment and the quick device of blast prevention of the specific embodiment one, two or four described channel of coal mining working surface gas backwash formulas is; It also comprises limit switch 20; Said limit switch 20 is arranged on the unlatching path of explosion arrestment door 2, the limit signal output of said limit switch 20 and the limit signal input of control module 11.
The difference of the specific embodiment six, this specific embodiment and the quick device of blast prevention of the specific embodiment five described channel of coal mining working surface gas backwash formulas is; It also comprises two locking latches; Have two through holes on the said crossbeam 5; Said two through holes lay respectively at the both sides of perpendicular overarm 6, and the end of two locking latches 18 passes the lower edge that two through holes are locked at crossbeam 5 two explosion arrestment windows 4 respectively.Crossbeam 5 is for can split into two-part structure from the centre.
In this embodiment, crossbeam 5 can also be provided with control button, is used to control the moving or closed condition of unlatching of explosion arrestment window.
In this embodiment, when the transportation large-scale parts, the locking latch 18 on the crossbeam 5 is opened; Spacing crossbeam 5 is taken apart from the centre, and launched to place wall one side, said two locking latches 18 can tie up on the stay cord; Through the stay cord pulling, two locking latches 18 are come off.Swing motor 19 control vertical beams 6 are moved upward, the top of support frame 1 is opened fully, guarantee that large-scale parts passes through.
The difference of the specific embodiment seven, this specific embodiment and the quick device of blast prevention of the specific embodiment one, two, four or six described channel of coal mining working surface gas backwash formulas is; It also comprises scalable sealing device 17, said scalable sealing device 17 be arranged on support frame 1 on.
This embodiment is used in the space of seal frame 1 with the tunnel engagement edge, in order to avoid explosion time has flame to pass through.
The difference of the specific embodiment eight, this specific embodiment and the quick device of blast prevention of the specific embodiment seven described channel of coal mining working surface gas backwash formulas is, has air duct mouth 8 in the explosion arrestment window 4, is used for passing through of air duct.
The difference of the specific embodiment nine, this specific embodiment and the quick device of blast prevention of the specific embodiment one, two, four, six or eight described channel of coal mining working surface gas backwash formulas is, has M pipeline on the explosion arrestment plate 3 through hole 9, and said M is a positive integer.
In this embodiment, offer a plurality of pipelines as required through hole 9, be used for the passing through of pipeline in the tunnel.
The difference of the specific embodiment ten, this specific embodiment and the quick device of blast prevention of the specific embodiment nine described channel of coal mining working surface gas backwash formulas is, has on the explosion arrestment plate 3 and cuts port 10.
Claims (10)
1. the quick device of blast prevention of channel of coal mining working surface gas backwash formula; It is characterized in that: it comprises support frame (1), explosion arrestment door (2), explosion arrestment plate (3), two fan explosion arrestment windows (4), crossbeam (5), perpendicular (6), electromagnet armature (14), spring (15) and the control system of hanging oneself from a beam; Support frame (1) is divided into upper and lower two parts through crossbeam (5); The left side of explosion arrestment plate (3) is fixed on the left side of support frame (1) lower part; The right edge of the right edge of said explosion arrestment plate (3), crossbeam (5) and support frame (1) forms doorframe, and explosion arrestment door (2) is hinged with said doorframe; The top of perpendicular overarm (6) and the middle part of support frame (1) lower edge, top flexibly connect, and the other end of perpendicular overarm (6) contacts with the upper surface of crossbeam (5); The top of support frame (1) is divided into left and right two parts through perpendicular overarm (6), and said two fan explosion arrestment windows (4) are hinged on the and arranged on left and right sides of perpendicular overarm (6) respectively; And its articulated elements is provided with electromagnet armature (14) and spring (15); The control system comprises control module (11), ultraviolet inductor (12) and gas generation apparatus (13); The induced signal output of ultraviolet ray inductor (12) is connected with the induced signal input of control module (11), and the control signal output of control module (11) is connected with the control signal input of gas generation apparatus (13); Said gas generation apparatus (13) is arranged on explosion arrestment door (2) and opens the face place.
2. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 1; It is characterized in that explosion arrestment door (2) is made up of foamed ceramics basic unit (21) and iron wire stratum reticulare (22), said iron wire stratum reticulare (22) covers and is fixed on inside and outside two faces of foamed ceramics basic unit (21).
3. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 1 and 2 is characterized in that it also comprises N impact liner (7), and a said N impact liner (7) distributes and is fixed on the right edge of explosion arrestment plate (3), and said N is a positive integer.
4. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 3, but it is characterized in that it also comprises the swing motor (19) of swing, but the swinging axle of the swing motor (19) of said swing contacts with perpendicular overarm (6); But the control signal input of the swing motor (19) of said swing is connected with the control signal output of control module (11).
5. according to claim 1, the quick device of blast prevention of 2 or 4 described channel of coal mining working surface gas backwash formulas; It is characterized in that it also comprises limit switch (20); Said limit switch (20) is arranged on the unlatching path of explosion arrestment door (2), and the limit signal output of said limit switch (20) is connected with the limit signal input of control module (11).
6. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 5; It is characterized in that it also comprises two locking latches; Have two through holes on the said crossbeam (5); Said two through holes lay respectively at the both sides of perpendicular overarm (6), and the end of two locking latches passes the lower edge that two through holes are locked at crossbeam (5) two explosion arrestment windows (4) respectively.
7. according to claim 1,2, the quick device of blast prevention of 4 or 6 described channel of coal mining working surface gas backwash formulas, it is characterized in that it also comprises scalable sealing device (17), said scalable sealing device (17) is arranged on the support frame (1).
8. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 7 has air duct mouth (8) on it is characterized in that in the explosion arrestment window (4).
9. according to claim 1,2,4, the quick device of blast prevention of 6 or 8 described channel of coal mining working surface gas backwash formulas, it is characterized in that having on the explosion arrestment plate (3) M pipeline through hole (9), said M is a positive integer.
10. the quick device of blast prevention of channel of coal mining working surface gas backwash formula according to claim 9 is characterized in that having on the explosion arrestment plate (3) and cuts port (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105531653A CN102061929B (en) | 2010-11-22 | 2010-11-22 | Blowback fast explosion suppression device for coal mining working face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105531653A CN102061929B (en) | 2010-11-22 | 2010-11-22 | Blowback fast explosion suppression device for coal mining working face |
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| CN102061929A CN102061929A (en) | 2011-05-18 |
| CN102061929B true CN102061929B (en) | 2012-07-25 |
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| CN102661164A (en) * | 2012-04-01 | 2012-09-12 | 苏毅 | Easily opened shock attenuation device for air door |
| CN107130893A (en) * | 2016-02-29 | 2017-09-05 | 叶中豹 | One kind is used for the new refuge chamber explosion-proof flame-retardant sealed door in underground |
| CN107131003A (en) * | 2016-02-29 | 2017-09-05 | 叶中豹 | One kind is used for the new ventilating shaft explosion-proof door in underground |
| CN110617107B (en) * | 2019-10-26 | 2021-05-07 | 陕西德源府谷能源有限公司 | Automatic wind shielding and sealing device for fully mechanized coal mining face corner |
| CN111608729B (en) * | 2020-05-27 | 2021-09-24 | 中南大学 | Airtight door device suitable for mine tunnel |
| CN111608728B (en) * | 2020-05-27 | 2021-09-24 | 中南大学 | Method for forming closed space in mine roadway |
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