CN102410044B - Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief - Google Patents
Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief Download PDFInfo
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- CN102410044B CN102410044B CN201110205493.9A CN201110205493A CN102410044B CN 102410044 B CN102410044 B CN 102410044B CN 201110205493 A CN201110205493 A CN 201110205493A CN 102410044 B CN102410044 B CN 102410044B
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Abstract
The invention discloses a vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief, which belongs to the technical field of ventilating safety of coal mines and solves the problems that an explosion door fast depressurizes and releases blast air pressure and safely, automatically resets to close the mouth of a well and protects a ventilator device to be safely operated and normally ventilated when downhole blast impacts the mouth of a vertical ventilating shaft. A template pressure relief device and a skylight for a pilot pressure relief device capable of automatically resetting and closing are arranged on the top and a shell surface of the explosion door respectively; the explosion door is provided with four groups of hydraulic cylinders which synchronously move in two directions and are used for pulling and pushing the explosion door to automatically ascend and descend along the cylinders (tracks) and a hydraulic control and electric control system; the explosion door is also provided with a control device for operating a door body lifting hydraulic cylinder in a machine room and a pump station so as to realize natural ventilation and inverted ventilation operation; and a magnet steel sucking skylight is locked to realize inverted ventilation without manual operation. A composite technical system for operation and lifting control of the explosion door is safe and reliable, remote control operation is convenient and rapid, a ventilator is safely operated and ventilated during an accident, and an explosion-proof effect of the explosion door is achieved.
Description
Technical field
The present invention relates to a kind of explosion-proof door of coal miine vertical shaft, relate in particular on its top cover with on the housing face explosion proof door that blast wave impacts after actuating is opened the structure that can automatically close is set, belong to coalmine ventilation safety protection technique field.
Background technology
Explosion proof door is the important safety device of coal mine ventilation system; Vertical ventilating shaft explosion-proof door is specifically designed to the vertical upcast shaft that main fan in mine is pull-out type, on the wellhead platform face of mounting arrangements on the same axis of upcast shaft.
The function of explosion proof door is: 1. when down-hole blast wave that gas and dust explosion produces occurs rushes at vertical ventilating shaft mouth, the explosion proof door unlatching release of rising immediately, avoid blast wave air pressure to rush at ventilation fan, and the protection fan unit normally moves; After blast wave disappears, explosion proof door relies on deadweight and sucks back with the ventilation fan negative pressure that descending resets closes well head; 2. while normally ventilating, explosion proof door relies on negative pressure to keep closed condition; 3. stop for some reason between the ventilation fan on-stream period, explosion proof door should rely on balance weight tractive force and, with the air pressure difference produced inside and outside the well head unlatching of freely rising, utilize natural ventilation pressure to be ventilated; 4. when down-hole has an accident catastrophe when implementing inverted ventilation or carrying out the inverted ventilation manoeuvre, the operation reversing device, by its explosion proof door fixed latch, was realized inverted ventilation in 10 minutes.
Technological document and the document of the vertical ventilating shaft explosion-proof door of prior art be, 1. project name: the vertical ventilating shaft explosion-proof door working design book map title: explosion proof door; Door body designing unit: Wuhan Coal-Mine Designing Inst. of Ministry of Coal Industry design date: replace item number in June, 1979: the B78-375 authentication code: (79) 766 scope of applications: the main upcast shaft time of implementation of the main ventilating fan of coal mine: from design document approval day.2. Ministry of Coal Industry's "<safety regulations in coal mine > version was carried out explanation 1986 years " the 38. the designing requirement of the air-out well head explosion proof door of main ventilating fan is housed.The 44. the inspection of back lass manoeuvre and reversing facility.3. "<safety regulations in coal mine > 221 ventilate " version in-2010 in 1986.
The vertical ventilating shaft explosion-proof door facility of prior art, as shown in Fig. 1, Figure 1A-Fig. 1 D, is comprised of four parts: one. door body 8, seat board 10 and the pony sill of explosion proof door-be integrally togather; Two. four groups of weight-drivens-comprising: weight bracket 4, weight group 5, assembly pulley 6 and wire rope 7; Three. eight groups of reversing device-compression plate-girders 2 and fastening bolt 3; Four. fluid sealing concrete body-oil groove 9 and store oil well 1 lead to.
The problem and blemish that the vertical ventilating shaft explosion-proof door of prior art exists:
1. explosion proof door is damaged in unbalance unstability, railless movable rise unlatching: the vertical ventilating shaft in (1) well shooting wave current footpath and wind cave prong form rapidly avried flow and depart from upcast shaft axis impact explosion proof door, are subject to the jam deformed damaged while causing a body pony sill to break away from oil groove obliquely; Departing from a reaction force of the body weight heart makes body throw off a rope traction to be dished out that well head is aerial to crash at a distance; (2) mass unbalance between four supporting bases of traction door body, weight imbalance, moving parts resistance do not wait the formation jam to stagnate, and the rising of four groups of weight traction door bodies can not synchronously cause haulage gear destruction, the local explosion distortion of housing; Therefore (3) a door body can not rise while opening release fully, and blast wave rushes at ventilation fan through the wind cave and makes that its unit is destroyed, casualties.
2. after blast wave disappears, explosion proof door can not cut out well head, and mine ventilation is interrupted: (1), even if the door body does not destroy, does not have additionaling power not reset by automatic descending but be trapped in obliquely the well head top; (2) door body or explosion are out of shape or are thrown outer wellhead and damage, and all can not close well head; (3) ventilation fan destroyed.Therefore mine can not normally ventilate.
3. during natural ventilation, need to increase manpower and materials and complete a body lifting: when (1) stops the ventilation fan running for some reason, the weight that is slightly larger than a body weight can not draw a body and rise with the well head natural ventilation pressure, need many manpower and materials to weight component auxiliary tone balance, towing simultaneously or holder are held up a traction door body and are synchronously risen to open and put in place, descend to resetting afterwards and close well head; (2) many personnel jeopardize safety in the work high above the ground of well head edge.
4. when inverted ventilation moves, the inverted ventilation operation exceeds the stipulated time, in time inverted ventilation: (1) eight group of reversing device is removed and is fixed, rotates and be pressed into a body seat board inverted ventilation locking position again by normal position, and driver's one man operation time is more than at least 10 minutes; (2) machine room has 20～more than 40 meters ascend operations far away to complete a body locking to vertical ventilating shaft mouth, carries out afterwards the operation of relative program, to the actual total time that changes the roadway wind direction surpassing regulation 10 minutes, is difficult to timely inverted ventilation.
Existing vertical ventilating shaft mouth oil groove, store oil well, weight bracket basis seat surface and foundation bolt etc. belong to the concrete body structure of shaft building engineering design, do not allow to change.
Summary of the invention
The technical problem that after blast wave release release of the present invention, automatically reset vertical ventilating shaft explosion-proof door will solve is: 1. when the well shooting ripple rushes at vertical ventilating shaft mouth, explosion proof door fast reaction release discharges blast wave air pressure, and the protection explosion proof door is excellent, the protection fan unit runs well; 2., after blast wave disappears, explosion proof door automatically descends to resetting and cuts out well head; 3. synchronous, the balance of door body lifting is reposefully along guide rail movement; 4. inverted ventilation operation or natural ventilation operation, efficient and convenient safe and reliable, realizes Long-distance Control and programme-control in machine room.
The present invention solves the problems of the technologies described above adopted technical scheme to be:
The present invention is comprised of explosion proof door, guide's pressure relief device, lamina membranacea pressure-release assembly, permanent magnet mechanism, door body lifting hydraulic means and hydraulic drive and control system etc.
Explosion proof door is the rigid unitary structure that pony sill, middle part seat board and upper body form.Pony sill still is seated in existing well head oil groove; Hull girder is set a roof beam in place to increase by existing eight and is changed 12 into and set a roof beam in place; The existing weight-driven of reject and reversing device.
Described guide's pressure relief device, be comprised of four groups of skylights and eight cover transmission devices, is evenly arranged on the housing face.
1. skylight, the window that open in blast wave pneumatic actuation skylight is that blast wave is drained in advance and unloaded the circulation aperture of putting.The longitudinal central axis line bilateral symmetry in each group skylight is arranged left and right two sash that relatively open and close, and be bearing on vertical joist by same combined page axle splicing sleeve, vertical joist two ends connect firmly with upper and lower two parallel cross girders, and two cross girders connect firmly one with left and right two hull girders.
Evenly offer one group of skylight opening two sash of apportion in the middle of two hull girders of Su Xian both sides, per quart housing Mian Shang center, left and right two windows are in 6 °～9 ° at the facade angle of opening the time limit allocation fully, after blast wave disappears, two luffer boards because of its gravity deflection from the hinge axis center of gravity synchronously follow transmission device automatically landing reset and close window, close well head.
2. transmission device is that the combination unit that day windowsill hinge axis rotates the synchronous symmetric motion of in locus two groups mechanism is closed, limited to the safe and reliable unlatching of left and right sash and parking position accuracy.Every cover transmission device is comprised of the gear of same size in twos, gear shaft, members such as rocking bar, connecting rod, pivoting support and frame with positive stop.
Two cover transmission devices are used in every group of skylight, are arranged in vertical joist transversal line down either side.The left and right motion of every covering device connects firmly together with left and right luffer boards face by connecting rod support; Be assemblied in the gear on two parallel pinion shaft and moving link on frame, be have oppositely, arc is engagement type two groups of synchronous symmetric motion mechanisms, frame is arranged on vertical carriage through supporting seat; It is one group of member that a gear of two symmetrical clampings of the rocking bar with positive stop connects firmly, the spacing open locking in positive stop constraint skylight.
Described lamina membranacea pressure-release assembly, be overhead type release of pressure lamina membranacea top cover, low malleable casting thin web, pressing plate, sealing mat, fastening assembly and upper frame, consists of.The same hull girder in upper frame outer ring, hull plate connect firmly one, place lamina membranacea in upper frame inner ring concave station seam, by pressing plate and bolton locking.To be that this vertical ventilating shaft ventilation fan is normal ventilate or during the inverted ventilation operation in 1.25～1.4 times of maximum wind pressure power the rated pressure of lamina membranacea, when the blast wave that surpasses the lamina membranacea rated pressure impacts explosion proof door, the top cover lamina membranacea is immediately released and is put the detonation pressure momentum by drum, realizes guide's release of pressure rapidly.After blast wave disappears, explosion proof door can seal well head with standby lamina membranacea replacement top cover while falling pithead position after rise in time.
Described door body lifting hydraulic means, be four groups for door body lifting SEQ along hydraulic cylinder<track the guiding device of motion, be also natural ventilation overhead door body top pressure explosion proof door locking mechanism during with the inverted ventilation operation.This device is comprised of semi girder stand, stand beam end holder, hydraulic cylinder and hinged support seat etc.Stand is bearing on existing weight bracket footing foundation face; Hydraulic cylinder connects with the holder in stand by flange bolt, that cylinder body is fixed, the at right angle setting form of piston rod movement, hydraulic cylinder rear end tails mounting means is flange arrangement, and the front end head is that spherical hinge lug ring is hinged on supporting base, and supporting base connects firmly with hull girder; Hydraulic cylinder has buffer and guide sleeve structure, realizes that the lifting of constraint door body is along cylinder barrel<track > guiding movement.
Described permanent magnet mechanism, be the microscler Magnetic Field Source magnet steel that permanent-magnet material is made, the locking device that while being normal ventilation and inverted ventilation operation, the adhesive skylight is closed.Every group of skylight shares two groups of four magnet steel, and left and right sash is respectively with one group of two magnet steel: at the inboard facade of the both sides of the outside of left and right sash beneath window hull girder or horizontal axis, Zhong,Yi skylight, plane, be symmetrical two magnet steel separately of vertically arranging.
Total the suction-combining force of every group of skylight Magnetic Field Source is in 1.2～1.4 times of this reversing air current of ventilator when operation maximum wind pressure power, when the blast wave air pressure that surpasses the total the suction-combining force of Magnetic Field Source impacts explosion proof door, skylight is opened immediately to drain to unload and is put the blast wave momentum, realizes quick guide's release.
Described hydraulic drive and control system are the complex function systems that hydraulic power unit, hydraulic cylinder, hydraulic control and Electrified Transmission programme-control etc. form.
1. hydraulic power unit, the special Accumulator arrangements that consists of a plurality of accumulators of arranging is as the hydraulic cylinder emergency power supply: when incident generation and pumping plant shut down again, the Accumulator arrangements internal potential energy can meet moment in short-term and supply with pressure oil to hydraulic cylinder, carries out piston rod retraction pull-up explosion proof door and rises and open.Pressure controller monitoring Accumulator arrangements duty is set.
2. motionlessly when the hydraulic cylinder during normal the ventilation is long treat standby operating mode, its setting into and out of hydraulic fluid port is: the hydraulic fluid port of rodless cavity is for overflowing back oil export, and the hydraulic fluid port of rod chamber is oil-in and closes.
When blast wave impacts explosion proof door, (1) explosion proof door rises rapidly and promotes piston rod and make the hydraulic cylinder oil pressure increase, and fluid is opened after flowing into the hydraulic control system precursor overflow valve and entered the fuel tank off-load through the rodless cavity oil-out; (2) be arranged on the heat transfer agent that detects blast wave blast and air velocity transducer in vertical ventilating shaft and be delivered to the ground monitoring processing center, its signal of telecommunication is by the control system programme-control, by the hydraulic potential energy converting and energy of Accumulator arrangements, be to open oil-in to the hydraulic cylinder rod chamber to supply with pressure oil, piston rod fast retractile pull-up explosion proof door is opened to unload and is put blast wave air pressure.
(3) explosion proof door is opened the transducing signal that puts in place and by control program, hydraulic cylinder is changed into and out of hydraulic fluid port: the hydraulic fluid port of rod chamber into oil-out close, the hydraulic fluid port of rodless cavity closes into oil-in, enter piston rod movement commutation control program and prepare.
(4) program controlled mode that the transducing signal feedback quantity that blast wave disappears combines with time lag, make hydraulic cylinder carry out piston rod and stretch out the decline of ejection explosion proof door, realizes that the automatic Rapid reset of explosion proof door closes well head.
(5) explosion proof door cuts out the sensor signal put in place and by programme-control, hydraulic cylinder changed into and out of hydraulic fluid port: the rod chamber hydraulic fluid port is into oil-in and close, and the rodless cavity hydraulic fluid port is overflow oil return oil-out, the hydraulic cylinder operating mode while returning to normal the ventilation.
3. hydraulic control and electric vapour transmission program control system, be comprised of data acquisition process, the main hydraulic circuit of hydraulic control and electrical control system.
(1) data acquisition and monitoring is: the 1. blast of blast wave air-flow, wind speed physical parameter; 2. explosion proof door operating position; 3. hydraulic cylinder stretch, contracting and hydraulic fluid port conversion operating mode; 4. the pumping plant pump group condition that opens, stops work; 5. Accumulator arrangements duty operating mode; 6. supply and distribution operating mode.
(2) controlling hydraulic system is to take the signal of telecommunication control that the control valves such as electromagnetism, electric liquid or electric-hydraulic proportion send by electrical control and programmable logic controller to be converted to the hydraulic control system that hydraulic control signal is major way.
Hydraulic circuit mainly contains: 1. four groups of hydraulic cylinders bi-directional synchronization loops of motion of stretching, contract; 2. hydraulic cylinder piston moves commutation, control, locking loop; 3. hydraulic cylinder is into and out of the commutation loop of hydraulic fluid port; 4. Accumulator arrangements duty and pumping plant pump group are opened fuel feeding or off-load, shutdown control loop; 5. Accumulator arrangements is met an urgent need and is supplied the conversion and control loop of pressure oil to hydraulic cylinder.
(3) electrical control, be based on explosion proof door and the hydraulic cylinder long distance control system of programmable logic controller and KingView.Have automatic, long-range, (near control) three kinds of control modes realize controls such as explosion proof door and hydraulic cylinders on the spot.
1. the automatic control mode data sampling and processing is converted to normal voltage or current signal, programmed instruction electric control element and the hydraulic control loop through programmable logic controller, set, realize controls such as hydraulic power unit, hydraulic cylinder, Accumulator arrangements duty and steering hydraulic oil supply cylinders.
2. Long-distance Control mode inverted ventilation moves: in machine room, pass through<control far away > converter and action button control hydraulic cylinder, the execution piston rod stretches out to push up presses the explosion proof door locking; When inverted ventilation finishes, then after the locking of operation control hydraulic cylinder execution piston rod releasing to explosion proof door, the conversion of programme-control hydraulic cylinder oil inlet and outlet.Natural ventilation: operation<long-range > converter and<rise control button realizes that explosion proof door rises and opens; While recovering normal ventilation the, operation<decline > button descends explosion proof door to cut out well head, and the programme-control hydraulic cylinder is changed into and out of hydraulic fluid port.
3. on the spot control mode in pumping plant switchgear house operation<inverted ventilation operation or<natural ventilation control, be and<control far away > method of operating of identical two places one control.
It is respectively one group of mutual standby accumulator jar group or other battery power conducts<anxious stand-by power source that emergency power supply is installed in machine room and pumping plant switchgear house especially >: while because of the accident interruption of power supply, needing the explosion proof door unlatching to carry out natural ventilation, the accumulator jar group is specially for controlling with the signal of telecommunication control valve and other electric device supply powers that are converted to hydraulic control signal in hydraulic system.Adopt<control far away > or<nearly control one mode and with<anxious stand-by power source switching controller, supply with pressure oil by program control with hydraulic control system instruction Accumulator arrangements hydraulic steering cylinder rod chamber hydraulic fluid port, carry out the rising of piston rod retraction pull-up explosion proof door and open, realize natural ventilation.After service restoration, before normal the ventilation, according to operation sequence, control liquid presses piston pole and stretch out and push explosion proof door and descend and close well head.
Display screen in machine room is by explosion proof door monitoring camera and Industrial Personal Computer (IPC) configuration software, and the dynamic and analog picture of real-time display system operating mode, realize remote monitoring.
The invention has the beneficial effects as follows;
1. during the vertical ventilating shaft mouth of the wave impact of blasting, explosion proof door fast reaction guide release discharges blast wave air pressure, and explosion proof door is excellent, the fan unit safe handling, realizes explosion proof door<explosion-proof > function.
(1) explosion proof door top cover release of pressure lamina membranacea, released and put the detonation pressure momentum by instant drum much smaller than blast wave air pressure because of its rated pressure, realizes guide's release of pressure rapidly, effectively alleviated the impact force to housing; (2) four groups of skylights on the housing face are also opened immediately to drain to unload and are put the detonation pressure momentum under blast wave air pressure impacts, and realize quick guide's release, effectively cut down, eliminate the destructive power of blast wave to explosion proof door; (3) left and right luffer boards when open in skylight have the locking constraint of positive stop in a facade angle restriction and actuator movement mechanism, and two fan windows are contact-impact so safety and nondestructive not.
(4) explosion proof door is under the blast wave impact force action, also immediately along four groups of hydraulic cylinder<tracks > synchronized movement rise to open excretion and unloads and put blast wave, one, because of the rodless cavity hydraulic fluid port in overflow oil return operating mode, the explosion proof door pushing tow piston rod that rises rapidly moves to rodless cavity, and the guiding of retracting explosion proof door rises; They are two years old; the blast wave transducing signal is opened to hydraulic cylinder rod chamber oil-in and is supplied with pressure oil with hydraulic control system instruction Accumulator arrangements oil-feed port by program control; short moment piston rod retraction pull-up explosion proof door rises to open to drain to unload fully and puts blast wave, has effectively protected explosion proof door and fan unit safe handling.
Do not possess<release of pressure of prior art explosion proof door facility ><guide's release ><door body lifting hydraulic cylinder > and<hydraulic control and automatically controlled > system and device and function thereof.The frame mode unification function that the present invention opens three kinds of approach by release of pressure, guide's release and door body automatic-ascending realizes the blast wave release, thus explosion proof door possess<explosion-proof function.
2. after blast wave disappears, explosion proof door automatically descends to resetting and cuts out well head, and ventilation fan runs well and ventilates.
(1) follow transmission device synchronous automatically landing because of its plate face gravity deflection from the hinge axis center of gravity in the skylight of enable possition in guide's pressure relief device and reset, and fit in reliably the window tight closing under the effect of Magnetic Field Source magnet steel the suction-combining force.
(2) the blast wave transducing signal follows the disappearance of blast wave closely and disappears, the mode combined with time lag according to the transducing signal feedback quantity, and programme-control is carried out piston rod to hydraulic cylinder and is stretched out the decline of promotion explosion proof door, and a realization door body automatically resets and closes well head; Operating mode when hydraulic cylinder recovers normal the ventilation afterwards, explosion proof door relies on deadweight and ventilation fan negative pressure to cut out well head.
(3) explosion proof door can be in time with standby lamina membranacea replacement top cover closure casing when cutting out pithead position, and ventilation fan runs well and ventilates.
3. the convenient quick inverted ventilation of inverted ventilation operation.
(1) be greater than the maximum wind pressure power of inverted ventilation operation due to the total the suction-combining force of the magnet steel in every group of skylight, four groups of skylights are therefore safely and reliably by<locking > motionless, can realize the inverted ventilation operation without artificial time operation.
(2) adopt<control far away or<nearly control > mode of one controls the hydraulic cylinder piston masthead and presses the explosion proof door locking, realize the fast operating inverted ventilation, after inverted ventilation finishes, adopt aforementioned control mode to remove the locking that the piston masthead is pressed explosion proof door, make hydraulic cylinder recover former operating mode into and out of hydraulic fluid port.Realize inverted ventilation operation at the appointed time.
The reversing device operating time of prior art can not meet the inverted ventilation operation of stipulated time.
4. during natural ventilation, the explosion proof door lifting hydraulic cylinder is easy to operate and safe reliable.
(1) therefore admittedly stop the ventilation fan running, need explosion proof door to open natural ventilation: to adopt<control far away > or<nearly control > control mode of one starts pumping plant, operation<rising > button, implement hydraulic cylinder control execution piston rod retraction pull-up explosion proof door is risen and opens natural ventilation.While recovering normal ventilation the, operation<decline > button get final product, afterwards by the conversion of stored program controlled control hydraulic cylinder hydraulic fluid port.
(2) while during because of power failure, needing natural ventilation: adopt<control far away > or<nearly control > mode of one, and with<anxious stand-by power source > conversion and control with<rise operation, program control and electric control element hydraulic control system is powered by the accumulator jar group, Hydraulic Elements and hydraulic cylinder supply pressure oil by Accumulator arrangements, realize explosion proof door rising unlatching natural ventilation, restore electricity while proceeding to normal ventilation, operate relevant switching controller and operation<decline button can normally ventilate.
Prior art, when natural ventilation, is only utilized the natural ventilation pressure at weight group traction explosion proof door and vertical ventilating shaft mouth place, and explosion proof door can not be opened by automatic-ascending, and while normally ventilating, explosion proof door can not freely descend to resetting and cuts out well head.
The accompanying drawing explanation
Fig. 1, Figure 1A-Fig. 1 D is the facility structure accompanying drawing of existing vertical ventilating shaft explosion-proof door.
Fig. 1 is that existing explosion proof door facility is arranged and the structure facade main view of the vertical ventilating shaft of underground return air flow path to air outlet.
Figure 1A is the structure top view of explosion proof door shown in Fig. 1: 1-store oil well, the continuous oil well led to oil groove 9 that explosion proof door inner and outer air pressure isolating seal is used; 10-door body seat board, the position of compression locking while being both the inverted ventilation operation.
Figure 1B is the deep cutting view amplified along A-A line in Figure 1A: the 4-weight support; 5-weight group; The 6-assembly pulley; The 7-haulage cable; The explosion-proof every body of 8-; The 9-oil groove; 10-door body seat board.
Fig. 1 C is the I zoomed-in view of reversing device shown in Figure 1A 2:<normal position >-while normally ventilating, unlocking state when reversing device breaks away from the door body;<inverted ventilation position > inverted ventilation when operation, the reversing device precession is pressed into the seat board blocking.
Fig. 1 D is the deep cutting view along B-B line in Fig. 1 C; The 2-reversing device, beam slab; 3-fastening bolt group; The explosion-proof every body of 8-; 10-door body seat board.
Fig. 2, Fig. 2 A-Fig. 2 J are the system schema accompanying drawings that the present invention proposes.
Fig. 2 is that explosion proof door system body of the present invention is arranged with the vertical ventilating shaft of underground return air flow path to the structure facade main view that goes out air door.<Hydraulic Station > hydraulic drive of a body lifting hydraulic cylinder and pumping plant machine room and the switchgear house of control system.
Fig. 2 A is the structure amplification plan view of explosion proof door shown in Fig. 2.
Fig. 2 B is the deep cutting view amplified along C-C line in Fig. 2 A.
Fig. 2 C is the II zoomed-in view of the lamina membranacea pressure-release assembly top cover 15 shown in Fig. 2 A.
Fig. 2 D is the deep cutting view along D-D line in Fig. 2 C.
Fig. 2 E is the III amplification view of the hydraulic cylinder holder 12 shown in Fig. 2 B.
Fig. 2 F is the IV zoomed-in view of skylight 22 structural representations of the guide's pressure relief device 21 shown in Fig. 2 A.
Fig. 2 G is the deep cutting view that amplifies along E-E line in Fig. 2 F, be the structural representation of guide's pressure relief device 21 while closing with skylight 22.
Fig. 2 H be transmission device 30 shown in Fig. 2 G in skylight the structural representation of mechanism kinematic during 22 left and right sash enable possition.
Fig. 2 I be A shown in Fig. 2 G to guide's pressure relief device 21 in skylight the 22 structural representation stereograms that amplify while opening.
Fig. 2 J be A shown in Fig. 2 G to the structural representation stereogram that amplifies while closing of guide's pressure relief device 21 skylights 22.
Reference numeral brief description shown in Fig. 2 A-Fig. 2 J
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Existing oil well 1 shown in Figure 1A, Figure 1B and oil groove 9 do not change original structure and application; Weight bracket 4, weight group 5, assembly pulley 6, traction steel rope of cable 7 in the reject weight-driven; Reject reversing device 2.
The structure of automatically reset vertical ventilating shaft explosion-proof door after blast wave of the present invention shown in Fig. 2, Fig. 2 A-Fig. 2 J discharges release, mainly be comprised of explosion proof door housing 8, guide's pressure relief device 21, lamina membranacea pressure-release assembly 15, permanent magnet mechanism, door body lifting hydraulic means and hydraulic drive and control system etc.
One. described explosion proof door claims again a body, is the rigid unitary structure mutually connected firmly by bottom mounting, middle part seat board 10 and upper body 8.
12 uniform hull girder 8-1 of explosion proof door top connect firmly with housing 8, the truncate regular conical steel plate shell face that housing 8 is 150 ° of cone angles; Often set a roof beam in place and connect and connect firmly with upper frame 20 through bolt 8-2 by two shaped steel; Connecting firmly one group on the housing face on the hull girder 8-1 at per quart place is the vertically arranged piston rod head hinged support of hydraulic cylinder seat 14.
Two. described blast wave guide pressure relief device 21 consists of four groups of skylights 22 and eight cover transmission devices 30.
1. skylight 22 is comprised of left sash 22-1, right sash 22-2, hinge plate 25-2, hinge cover 25-1, splicing sleeve 24, hinge axis 23, muscle frame 28, bearing 45, bearing plate 46 etc., is arranged on vertical joist 26 and cross girders 27.
Left window 22-1 and right window 22-2 are arranged symmetrically in the both sides of window axis: coaxial type plate 25-2 connects firmly two fan luffer boards respectively, coaxial type cover 25-1 is inserted on same hinge axis 23 after connecting firmly again, and two fan windows jointly relatively rotate and open or close around its axis; Hinge axis 23 two ends are bearing on vertical joist 26 by splicing sleeve 24, and with window upper and lower two, parallel cross girders 27 connects firmly one to vertical joist upper/lower terminal, and every cross girders two ends connect firmly with both sides hull girder 8-1 respectively; Every fan luffer boards inside perimeter has one group of muscle frame 28 to reinforce, and in the plate the inside, same bearing plate 46 and bearing 45 separately connects firmly, and by bearing 45, is articulated on the connecting rod 41 and connecting rod 42 of transmission device 30.
The facade angle of left and right sash plate when opening fully is 6 °～9 °, and locks with transmission device 30 middle left and right positive stops 38 and 39.
During the blast impulse explosion proof door, high pressure draught actuating skylight 22 is opened to drain to unload and is put the detonation pressure momentum, after blast wave disappears, because left and right sash plate facade angle restriction makes its plate face gravity deflection follow the synchronous landing of transmission device from hinge axis 23 centers of gravity, reset and automatically close well head.
2. transmission device 30, be have oppositely, arc is engagement type, two groups of devices that synchronism mechanism is combined integrated in relative rotation are symmetrically arranged.A set of two groups of mechanism's main members have: gear 34 and 35, rocking bar 36 and 37, positive stop 38 and 39, two gear shafts 40, connecting rod 41 and 42, two pitman pins 43, two rocking bar bearing pins 44, one group of frame 31, two bearings 32 and carrier setting bolt 33 etc.Physical dimension and the technical characterictic of often two or the one group members of corresponding symmetry are identical.
Two cover transmission devices 30 are used in one group of skylight 22, its center to center distance be vertical joist 26 length 0.62-0.65 doubly in, be distributed on this upper and lower both sides of vertical joist transversal line; Two groups of synchronism mechanisms of every covering device are listed in the left and right sides in 40 minutes by two parallel pinion shaft in frame 31, and frame 31 is fixed on vertical joist 26 through two bearings 32, bolt 33; The center to center distance perpendicular bisector of two parallel pinion shaft 40 and hinge axis 23 longitudinal axis conllinear, gear shaft is parallel to hinge axis.
The inboard cambered surface in positive stop 38 and 39 right angle connects firmly one with the stub end extrados of rocking bar 36 and 37 respectively; It is that 20 °, face height are 0.4～0.5 times of gear 34.35 tip diameters that positive stop stands to the angle of work plane and rocking bar two centerline holes; Every two stub ends with positive stop formula rocking bar symmetry clamps a gear and connects firmly into disjunctor is an assembly, the left and right gear rocking bar on two parallel axes respectively has one group of two positive stop, and microcephaly's end of each assembly rocking bar clamps respectively an arc connecting rod 41 and 42 use rocking bar bearing pins 44 are hinged; Connecting rod 41 and 42 another ends are hinged by pitman pin 43 and two bearings 45 respectively, then connect firmly with the bearing plate 46 of left window 22-1, right window 22-2 plate the inside.
When open in skylight 22, left and right sash with the left and right positive stop 38 and 39 of gear rocking bar disjunctor follow gear pair oppositely, arc rotates, two positive stops found stop while contacting to from latched position to work plane on two gears 34 and 35 center to center distance perpendicular bisectors.
Three. described lamina membranacea pressure-release assembly top cover 15 is that the top cover of slicer board structure is set at housing 8 tops.Mainly by pressing plate 17, lamina membranacea 18, sealing mat 19, cover plate bolt 16 and upper frame 20 etc., formed.
1. lamina membranacea 18 is low malleable casting slicer boards, and plate surface diameter is 0.16～0.22 times of this vertical ventilating shaft mouth diameter; When the rated pressure of lamina membranacea is the operation of the current normal ventilation of this vertical ventilating shaft ventilation fan or inverted ventilation in 1.25～1.4 times of maximum wind pressure power.
2. upper frame 20, are that housing 8 tops connect firmly the carrier of one with hull girder 8-1.Upper frame 20 inner lanes have the concave station seam to place lamina membranacea 18 and sealing mat 19, by pressing plate 17 and bolt assembly 16, are locked on upper frame 20.
When blast wave impacts explosion proof door, the instant drum of blast wave air pressure that top cover lamina membranacea 18 is exceeded the lamina membranacea rated pressure is released and is put the detonation pressure momentum, realizes guide's release of pressure rapidly.After blast wave disappears, explosion proof door descends while resetting well head, can be in time with standby lamina membranacea replacement top cover closure casing, well head.
Four. described door body lifting hydraulic means is comprised of stand 11, hydraulic cylinder 13 and supporting base 14 etc.
1. stand 11, are beam type rigid unitary structures, are the column supports that hydraulic cylinder 13 is installed, and totally four groups, are bearing on the basic seat surface of existing weight bracket.Stand beam-end interior plate face be installation seat plate 12-1 and its end face stiffener 11-1 connect firmly form 12, four installing hole flange seat 13-2 bolt 13-1 center lines of hydraulic cylinder holder and hydraulic cylinder 13 axis same as vertical ventilating shaft mouth plane; Four groups of hydraulic cylinder axle center diameter of a circles equal the well head diameter.
2. hydraulic cylinder 13, are two-action single-rod hydraulic cylinders, and have buffer and guide sleeve structure, are that the constraint explosion proof door is along cylinder barrel 13-3<track > the moving equilibrium rising is not derailed, reset accurately<guide rail steadily descends >; While being also the reversing air current of ventilator operation, the execution hydraulic cylinder of the motionless locking of explosion proof door is pressed on top simultaneously.The hydraulic cylinder installation form is that cylinder body is fixed, the at right angle setting of piston rod movement, and mounting means is the structure that the hydraulic cylinder rear end tails is flange connect, and the front end head is that spherical hinge lug ring and supporting base 14 are hinged.
The minimum stroke of hydraulic cylinder 13 piston rod retraction pull-up door bodies is 2.2～2.65 times that a body bottom mounting falls into oil groove 9 height, and it is making a concerted effort 1.2～1.3 times of explosion proof door gravity and inverted ventilation operation maximum wind pressure power sum that four groups of piston rods stretch out the top total thrust of pressure gate body.
(1) explosion proof door while normally ventilating is cutting out the well head state, its operating position transducing signal after information processing, by electric stored program controlled and pumping plant hydraulic control system make hydraulic cylinder rod chamber hydraulic fluid port be placed in oil-in and close, the rodless cavity hydraulic fluid port is placed in to open and overflows back hydraulic fluid port.
(2) while blasting the wave impact explosion proof door: one, the door body risen rapidly pushes piston rod and causes the hydraulic cylinder oil liquid pressure to rise, fluid flows into precursor overflow valve oil-in in hydraulic control system by the rodless cavity hydraulic fluid port, start overflow while surpassing the pilot valve opening pressure, whole traffic flow oil sump tanks when the main valve overflow increases; They are two years old, blast wave air-flow blast or wind speed transducing signal are after information processing, by stored program controlled and hydraulic control system, through control valves such as electromagnetism, electric liquid, signal of telecommunication control is converted to the hydraulic control signal execution hydraulic cylinder 13 hydraulic fluid port 13-4 also are converted to hydraulic cylinder rod chamber oil-in and supply with pressure oil into and out of hydraulic fluid port unlatching, while pumping plant Accumulator arrangements oil-feed port, piston rod retraction pull-up explosion proof door rising unlatching is unloaded and put blast wave air pressure.
(3) the explosion proof door rising is opened the control system of transducing signal in above-mentioned (1) (2) put in place and carried out hydraulic cylinder 13 hydraulic fluid port 13-4 conversions according to setting program: the rod chamber hydraulic fluid port is set to oil-out, the rodless cavity hydraulic fluid port is set to oil-in and closes simultaneously, completes before piston movement commutates the control program of preparing.
(4) after blast wave disappears, the blast wave transducing signal also disappears immediately, the mode that control system combines with the sensor feedback amount according to the time lag of setting, enforcement is carried out to stretch out to push away to hydraulic cylinder 13 piston rods and is made explosion proof door descend to resetting to close well head, close put in place transducing signal through control system carry out hydraulic cylinder 13 hydraulic fluid port 13-4 be transformed into normal ventilation the time operating mode.
Five. described permanent magnet mechanism is the Magnetic Field Source device to skylight 22 adhesives lockings that permanent-magnet material is made the magnet steel 29 elements formations of strip.Four magnet steel 29 are used in every group of skylight 22, and its middle left and right sash is respectively with one group two.
Below left sash 22-1 left window, in the inboard facade of the both sides hull girder 8-1 of the right beneath window of right sash 22-2 or plane, skylight 22 axiss of pitch of take equal in 0.6～0.7 times of this window length of side as symmetrical vertically uniform 29: two center to center distance of one group of two magnet steel of inlaying separately, when every group of skylight total the suction-combining force of 22 Magnetic Field Source is the operation of this reversing air current of ventilator in 1.2～1.4 times of maximum wind pressure power.
2. while normally ventilating, skylight 22 rely on from gravity and ventilation fan negative pressure close window, well head, 29 of magnet steel make skylight 22 be held and be fitted on the window sealing mat reliably.
3., when inverted ventilation moves, total the suction-combining force of Magnetic Field Source is locked skylight 22 reliably by adhesive.
4. power when blast wave impacts explosion proof door makes skylight 22 open fast to drain to unload and puts the blast wave momentum much larger than the total the suction-combining force of Magnetic Field Source, realize quick guide's release.
Six. described hydraulic drive and control system are pumping plant, hydraulic cylinder and hydraulic control and the Electrified Transmission complex function systems formed such as program control.
(1) hydraulic power unit, arrange three hydraulic pumps, and wherein 1#, 2# pump are working barrel, and the 3# pump is stand by pump; 4～6 accumulators are set and, with forming Accumulator arrangements as emergency power supply, are furnished with accumulator control valve group and pressure controller etc.
1. the application of Accumulator arrangements: during normal the ventilation, hydraulic cylinder 13 off-loads quit work motionlessly when long, and the pump group is only done intermittent operation in short-term to the accumulator fuel feeding time.When accident is blasted the vertical ventilating shaft of wave impact, its transducing signal is controlled Accumulator arrangements by program control and hydraulic control system and will lay in fluid potential energy hydraulic steering cylinder 13 rod chamber hydraulic fluid ports and supply with pressure oils, carries out the unlatching of rising of piston rod retraction pull-up explosion proof door at 2～4 seconds in short instantaneous time and unloads and put the detonation pressure momentum.
2. Accumulator arrangements duty method: (1) initial 1#, 2# pump fuel feeding simultaneously when oil-filled; (2), when oil pressure rises to 0.96 times of maximum working pressure, the pressure signal of pressure controller makes the off-load of 1# pump, 2# pump continue fuel feeding; (3) oil pressure rises to while equaling maximum working pressure, and pressure signal makes the off-load of 2# pump, and pumping plant stops to the Accumulator arrangements fuel feeding.The fluid potential energy that now Accumulator arrangements stores is the pressure oil potential energy that meets hydraulic cylinder 13 piston rod retraction pull-up explosion proof doors; (4), when oil pressure drops to 0.9 times of maximum working pressure, pressure signal makes 2# pump startup fuel feeding; When oil pressure drops to 0.86～0.83 times of maximum working pressure, 1# pump startup fuel feeding, i.e. two pumps fuel feeding simultaneously; (5) the charging pressure of accumulator value is in 0.48～0.66 times of maximum working pressure; Maximum oil pressure in Accumulator arrangements is in 1.12～1.14 times of maximum working pressure, i.e. limes superiors oil pressure, and now pumping plant is shut down, and the Accumulator arrangements oil pressure is laid in as emergency power supply.
(2) hydraulic control is to control and to be converted to hydraulic control signal to take, take the function control valves such as electromagnetism, electric liquid and electric-hydraulic proportion as the leading factor be that the control loop that major component forms has with the signal of telecommunication:
1. the bi-directional synchronization loop of four groups of hydraulic cylinder flow divider-combiners.2. hydraulic cylinder oil inlet and outlet open and close, conversion and control loop.3. piston rod commutation motion control loop.Piston rod retract put in place, piston rod stretches out the locking loop and removes locking and control during inverted ventilation.5. Accumulator arrangements: the pump group is to accumulator fuel feeding, pressure, off-load and shutdown control and Accumulator arrangements to the quick conversion and control of hydraulic cylinder fuel feeding.
(3) Electrified Transmission programme-control; be based on the explosion proof door lifting hydraulic cylinder long distance control system of programmable logic controller and KingView, mainly formed with DA combination module and communication module, anxious stand-by power source batteries and low voltage distribution system etc. by programmable logic controller, Industrial Personal Computer (IPC) and configuration software, industrial LCD, data acquisition, mould/number.
Sensor setting: 1. blast wave air-flow blast and air velocity transducer are arranged near vertical ventilating shaft shaft bottom and main return airway prong.2. the explosion proof door position sensor is arranged on stand 11 upper and lower positions.3. hydraulic cylinder 13 piston rods are stretched, are condensed and put sensor setting at stand 11 and piston rod head.4. Accumulator arrangements duty pressure control transducer-translating device is arranged on the Accumulator arrangements oil feed line.5. be arranged on the input port end for power distribution equipment for monitoring power distribution signal of telecommunication transducer-translating device.
Anxious stand-by power source device: respectively fill one group of mutual standby accumulator jar group in machine room and pumping plant switchgear house, the emergency standby power in the time of need to opening the explosion proof door natural ventilation as the chance failure interruption of power supply.Anxious stand-by power source be specially in hydraulic control system, take the control valve supply power of signal of telecommunication control and in stored program controlled the unit supply power of electrical equipment.Setting<anxious stand-by power source simultaneously > etc. the conversion and control device to the hydraulic cylinder elevating control.
Stored program controlled is according to the program of setting and each sensor feedback signal, normal voltage after treatment, the signal of telecommunication of electric current are controlled and are converted to hydraulic control signal, control pumping plant pump group, hydraulic circuit, Accumulator arrangements and hydraulic cylinder 13, and the real-time display system operating mode.
The control mode of explosion proof door lifting hydraulic cylinder:
1., while blasting the wave impact explosion proof door,, because the rodless cavity hydraulic fluid port has been set to overflow oil return operating mode, explosion proof door can be opened by automatic-ascending (1); (2) completing the explosion proof door rising by stored program controlled opens.
2. during the operation of natural ventilation or inverted ventilation, adopt<control far away or<nearly control > control mode and the method for operating of one realizes the explosion proof door lifting in machine room or pumping plant switchgear house.
Claims (7)
1. a blast wave discharges automatically reset vertical ventilating shaft explosion-proof door after release, comprise explosion proof door housing (8), existing store oil well (1) and oil groove (9), stand (11) and door body lifting hydraulic cylinder (13), inverted ventilation locking device, it is characterized in that:
(1) housing (8) spandrel girder is by the uniform formation that arranges of 12 hull girders (8-1), and the same upper frame in its top (20) connects firmly one;
(2) be provided with one group of lamina membranacea (18) pressure-release assembly top cover (15) above upper frame (20);
(3) the uniform aperture, four groups of skylights (22) of offering on housing (8) plate face, every group of aperture arranged on left and right sides hull girder (8-1) connects firmly one with two cross girders (27) up and down that are arranged in parallel, connect firmly a vertical joist (26) between two crossbeams on the longitudinal central axis line, four groups of guide's pressure relief devices (21) are set on four vertical joists (26);
(4) described inverted ventilation locking device, it is the Magnetic Field Source device of adhesive skylight (22) locking, the magnet steel of being made by several permanent-magnet materials (29) element forms, and this element is embedded among the facade or upper plane of both sides hull girder (8-1) inboard below the arranged on left and right sides of aperture, every group of skylight (22);
(5) described stand (11) is the beam type rigid structure, four Forming frameworks (11) are bearing in respectively on existing weight bracket (4) footing foundation seat surface, its top cross-bar end is provided with hydraulic cylinder (13) holder (12), by bolt (13-1), with vertically arranged hydraulic cylinder (13) rear end tails flange seat (13-2), connect, hydraulic cylinder (13) front end head is that spherical hinge lug ring is hinged with the bearing (14) above explosion proof door housing (8), and hydraulic cylinder (13) is communicated with pumping plant HYDRAULIC CONTROL SYSTEM loop into and out of hydraulic fluid port (13-4) by oil pipe line;
(6) be provided with hydraulic system, comprise pumping plant, Accumulator arrangements, hydraulic cylinder (13) and hydraulic control unit, hydraulic control unit be take by the signal of telecommunication control be converted to hydraulic control signal as master mode, to take electromagnetism and electric hydraulic control valve be the device that major component forms;
(7) be provided with electric stored program controlled, and consist of hybrid system with hydraulic system, wherein electric stored program controlled is based on explosion proof door lifting hydraulic cylinder (13) long distance control system of programmable logic controller and KingView; Also be provided with blast wave pneumatic sensor, explosion proof door lifting sensor and hydraulic cylinder (13) control mode converter.
2. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said lamina membranacea pressure-release assembly top cover (15), it is characterized in that: upper frame (20) inner lane has the concave station seam to place sealing mat (19) and lamina membranacea (18), by pressing plate (17) and bolt (16), sealing mat (19) and lamina membranacea (18) is locked on upper frame (20); Described lamina membranacea (18) is the thin plate that material is low tough foundry goods, and plate surface diameter is 0.16～0.22 times of vertical ventilating shaft mouth diameter, and to be that ventilation fan is normal ventilate or 1.25～1.4 times of maximum wind pressure power during the inverted ventilation operation its rated pressure.
3. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said guide's pressure relief device (21), mainly be comprised of skylight (22) and transmission device (30), it is characterized in that:
(1) described skylight (22) totally four groups, in the mouth of every group of skylight (22), vertical joist (26) center line both sides are provided with symmetrical left sash (22-1) and right sash (22-2), and coaxial type plate (25-2), hinge cover (25-1) and hinge axis (23) are connected in successively splicing sleeve (24) and are bearing in vertical joist (26) above center line;
(2) same bearing plate (46) and the bearing (45) separately of left sash (22-1) and right sash (22-2) plate inner face connects, and hinged with left connecting rod (41), the right connecting rod (42) of lazy-tongs in transmission device (30) by the pitman pin (43) in bearing (45) respectively;
(3) center line between upper every two supporting bases (14) of housing (8) is on conical shell face element line, this element line is the longitudinal central axis line in every group of skylight (22), the window center height is 0.65～0.7 times of this element line length, lower window hem width end points place is 80-120mm to the flat distance of vertical ventilating shaft mouth the inside, its hem width equals the span between these two ends, limit hull girders (8-1), and upper window hem width equals the span between these two ends, limit hull girders (8-1);
(4) left sash (22-1) is 6 °～9 ° with the facade angle of right sash (22-2) when opening fully;
(5) described transmission device (30) is to arrange to have the left and right symmetry reverse, that arc is engagement type and two groups of lazy-tongs combination units of relative motion; Every group of skylight (22) arranges two cover transmission devices (30), and this device connects with vertical joist (26) by frame (31), bearing (32) and bolt (33);
(6) two groups of synchronous symmetrical mechanisms of every cover transmission device (30) are connected on same group of frame (31), two groups of synchronous symmetrical mechanisms are within symmetrical minute, to be listed in the left and right sides of frame (31) by two gear shafts that are arranged in parallel (40) in frame (31), wherein symmetrical assembly is: two gear shafts (40), the left gear of gear pair (34) and right gear (35), with the left rocking bar of assembly (36) of positive stop (38) with the right rocking bar of assembly (37) of positive stop (39), two rocking bar bearing pins (44), left connecting rod (41) and right connecting rod (42), two pitman pins (43), and be connected in successively on left sash (22-1) and right sash (22-2) bearing (45) separately by the assembly said sequence, in synchronous symmetrical mechanism, the physical dimension of symmetrically arranged often two or every two assemblies is identical with technical characterictic,
(7) described assembly is: limit is drawn the same rocking bar of block (38) (39) (36) (37) to be fixedly connected and is integrated member or is made into integral member; A gear of every two rocking bars with positive stop clamping is fixedly connected and is integrated member;
(8), when positive stop (38) (39) is followed gear pair (34) (35) rotation, stop when its spacing work plane touches latched position is on gear pair (34) (35) center to center distance perpendicular bisector;
(9) left and right two gear shafts (40) are set in parallel on frame (31) body and are parallel to hinge axis (23), the perpendicular bisector of gear pair (34) (35) center to center distance and hinge axis (23) longitudinal axis conllinear; Two groups of lazy-tongs are listed in arranged on left and right sides in symmetrical minute by two gear shafts (40).
4. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said inverted ventilation locking device is characterized in that:
(1) when the magnet steel (29) of every cover Magnetic Field Source device is the reversing air current of ventilator operation to total the suction-combining force of every group of skylight (22) steel plate 1.2～1.4 times of maximum wind pressure power;
(2) magnet steel (29) set-up mode: among hull girder (8-1) facade or plane of left sash (22-1) left window below, the right beneath window of right sash (22-2), take skylight (22) axis of pitch for symmetry vertical uniform, the magnet steel (29) of fixedly inlaying separately one group two or equal number of packages up and down, the interelement center to center distance in every group of magnet steel (29) two ends equals 0.6～0.7 times of this window length of side.
5. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said door body lifting hydraulic cylinder (13) is characterized in that:
(1) hydraulic cylinder (13) has buffer and guide sleeve structure; Hydraulic control unit is controlled four groups of hydraulic cylinder bi-directional synchronization motions;
(2) minimum stroke of piston is 2.2～2.65 times that the explosion proof door pony sill falls into the interior height of oil groove (9), the movement velocity of piston is 0.4～0.8m/s, and the gross thrust of four groups of hydraulic cylinders (13) is explosion proof door gravity and ventilation fan maximum wind pressure power sum 1.2～1.4 times;
(3) import and export of hydraulic cylinder hydraulic fluid port (13-4) conversion operating mode is set and is: during normal the ventilation, the rod chamber hydraulic fluid port be placed in oil-in and close, the rodless cavity hydraulic fluid port is placed in and overflows back hydraulic fluid port; After blast wave impacts explosion proof door and rises and open and put in place, the rod chamber hydraulic fluid port be placed in oil return opening and close, the rodless cavity hydraulic fluid port is placed in oil-in and closes, the locking explosion proof door, during natural ventilation also with; During the inverted ventilation operation, the rodless cavity hydraulic fluid port is placed in oil-in, the rod chamber hydraulic fluid port is placed in oil return opening, and piston rod ejection explosion proof door cuts out immediately into and out of hydraulic fluid port after locking, after the inverted ventilation end recovers normal the ventilation, and the setting when change working of two hydraulic fluid ports is extremely normally ventilated.
6. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said hydraulic system is characterized in that:
(1) hydraulic power unit is provided with three hydraulic pumps and 4～6 or several accumulator Accumulator arrangements used in parallel, is equipped with control valve group and pressure controller monitoring pump group and Accumulator arrangements duty;
(2) hydraulic control system mainly is provided with: ventilate when different operating mode hydraulic cylinder oil inlet and outlet (13-4) conversion loop, hydraulic cylinder piston motion and locking or relief circuit, Accumulator arrangements of the flow distributing and collecting formula bi-directional synchronization loop of four groups of door body lifting hydraulic cylinders (13), ventilation fan changed loop fast to hydraulic cylinder (13) fuel feeding.
7. according to automatically reset vertical ventilating shaft explosion-proof door after the blast wave release release of claim 1, wherein said explosion proof door lifting hydraulic cylinder (13) long distance control system based on programmable logic controller and KingView is characterized in that:
(1) data acquisition process: be provided with blast wave air-flow blast and air velocity transducer, explosion proof door lifting position sensor, hydraulic cylinder (13) operating mode transducer-translating device, pumping plant pump group and Accumulator arrangements operating mode transducer-translating device, and the information parameter of Real-time Collection is processed and is converted to normal voltage or current signal, programmed instruction ECU and the hydraulic control loop through programmable logic controller, set are controlled pumping plant, Accumulator arrangements and hydraulic cylinder (13);
(2) be provided with Long-distance Control and control method on the spot, to hydraulic cylinder (13) elevating control;
(3) the anxious stand-by power source accumulator jar group of machine room and pumping station layout and switching controller control hydraulic cylinder (13) lifting with Accumulator arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110205493.9A CN102410044B (en) | 2011-07-14 | 2011-07-14 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110205493.9A CN102410044B (en) | 2011-07-14 | 2011-07-14 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
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| CN102410044A CN102410044A (en) | 2012-04-11 |
| CN102410044B true CN102410044B (en) | 2014-01-01 |
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| CN201110205493.9A Expired - Fee Related CN102410044B (en) | 2011-07-14 | 2011-07-14 | Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
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| CN102678177B (en) * | 2012-05-28 | 2014-05-14 | 陕西长武亭南煤业有限责任公司 | Automatic rapid closing device for remote control of coal mine disasters |
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| CN103306704B (en) * | 2013-06-09 | 2015-03-11 | 山东科技大学 | Vertical ventilating shaft anti-explosion door and method for relieving pressure safely and performing ventilation quickly by using door |
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| CN113074016B (en) * | 2021-04-11 | 2023-04-07 | 贵州大学 | Shock wave resistant coal mine protection device with efficient pressure relief function |
| CN113107571B (en) * | 2021-05-12 | 2024-05-03 | 金川集团镍钴有限公司 | Air door device for steel well wall return air small well and application method thereof |
| CN114109474B (en) * | 2021-08-25 | 2023-04-25 | 河南理工大学 | Intelligent coal mine air shaft explosion door experimental device and application method |
| CN114542185A (en) * | 2022-02-25 | 2022-05-27 | 兖矿能源集团股份有限公司兴隆庄煤矿 | Automatic lifting system for explosion-proof cap of air shaft of coal mine |
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