CN102410044A - 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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- CN102410044A CN102410044A CN2011102054939A CN201110205493A CN102410044A CN 102410044 A CN102410044 A CN 102410044A CN 2011102054939 A CN2011102054939 A CN 2011102054939A CN 201110205493 A CN201110205493 A CN 201110205493A CN 102410044 A CN102410044 A CN 102410044A
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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 the upright ventilating shaft explosion proof door in a kind of colliery, relate in particular on its top cover with on the housing face explosion proof door that blast wave impacts the structure that can close automatically after actuating is opened 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; Upright ventilating shaft explosion proof door is specifically designed to the vertical upcast shaft that main fan in mine is a pull-out type, and mounting arrangements is on the wellhead platform face on the same axis of upcast shaft.
The function of explosion proof door is: 1. when the down-hole blast wave that gas and dust explosion produces takes place rushes at upright ventilating shaft mouth, the explosion proof door unlatching release of rising immediately avoids blast wave air pressure to rush at ventilation fan, and the protection fan unit normally moves; After blast wave disappeared, explosion proof door relied on deadweight and inhales back decline with the ventilation fan negative pressure and resets and cut out well head; 2. explosion proof door relies on the negative pressure state that keeps shut when normally ventilating; 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 that produces inside and outside the well head unlatching of freely rising, utilize natural ventilation pressure to ventilate; 4. have an accident catastrophe when implementing inverted ventilation or carrying out the inverted ventilation manoeuvre when the down-hole, the operation reversing device was realized inverted ventilation with its explosion proof door fixed latch in 10 minutes.
The technological document and the document of the upright ventilating shaft explosion proof door of prior art be, 1. project name: the upright 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>1986 version carry out explanation " 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 upright ventilating shaft explosion proof door facility of prior art is made up of four parts: one shown in Fig. 1, Figure 1A-Fig. 1 D. door body 8, seat board 10 and the pony sill of explosion proof door-connection one; 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 devices-compress plate-girder 2 and fastening bolt 3; Four. fluid sealing concrete body-oil groove 9 leads to store oil well 1.
Problem and defective that the upright ventilating shaft explosion proof door of prior art exists:
1. explosion proof door is damaged in unlatching is risen in unbalance unstability, trackless motion: directly upright ventilating shaft of (1) well shooting wave current and wind cave prong formation rapidly avried flow depart from the upcast shaft axis and impact explosion proof door, receive the jam deformed damaged when 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 cause haulage gear destruction, the local explosion distortion of housing synchronously; Therefore (3) a door body can not rise when 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 disappeared, explosion proof door can not cut out well head, and mine ventilation is interrupted: (1) even if the door body does not destroy, and does not have additionaling power not descend voluntarily to reset but be trapped in the well head top obliquely; (2) door body or explosion distortion or quilt are thrown the outer wellhead damage, 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 accomplish the up-down of door body: 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 set of dispense adjustment balance, towing simultaneously or holder are held up a traction door body and are risen synchronously 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 moved, inverted ventilation operation overshoot time, in time inverted ventilation: (1) eight group reversing device was fixing by the normal position releasing, rotation is pressed into a body seat board inverted ventilation locking position again, and driver's one man operation time is more than at least 10 minutes; (2) machine room has 20～more than 40 meters far away ascend operations to accomplish the locking of door body to upright ventilating shaft mouth, carries out the operation of relative program afterwards, to the actual total time that changes the roadway wind direction surpassing regulation 10 minutes, is difficult to timely inverted ventilation.
Existing upright 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 automatically reset upright ventilating shaft explosion proof door will solve after the blast wave release release of the present invention is: 1. the well shooting ripple rushes at when founding the 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 disappeared, explosion proof door descended to resetting automatically and cuts out well head; 3. the door body goes up and down synchronously, balance is reposefully along guide rail movement; 4. inverted ventilation operation or natural ventilation operation are efficient and convenient safe and reliable, realize Long-distance Control and programme-control in the machine room.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The present invention is made up of explosion proof door, guide's pressure relief device, lamina membranacea pressure-release assembly, permanent magnet mechanism, door body up-down 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 constitute.Pony sill still is seated in the 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; Existing weight-driven of reject and reversing device.
Described guide's pressure relief device is made up 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 are 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 open and close relatively; And be bearing on the vertical joist through 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.
On per quart housing face, evenly offer one group of skylight opening and two sash of apportion in the middle of two hull girders of the plain line in center both sides; Left and right two windows are in 6 °～9 ° at the facade angle of complete opening time limit allocation; After blast wave disappears; Two luffer boards because of its gravity depart from the hinge axis center of gravity follow synchronously transmission device automatically landing reset and close window, promptly close well head.
2. transmission device is the safe and reliable unlatching of left and right sash and accurately reset and close, limit the composite set that day windowsill hinge axis rotates the synchronous symmetric motion of in the locus two groups mechanism.Every cover transmission device is made up of the members such as gear, gear shaft, the rocking bar that has positive stop, connecting rod, pivoting support and frame of same size in twos.
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 through connecting rod support; Being assemblied in gear on two parallel pinion shaft and moving link on the frame, is to have reverse, arc is engagement type two groups of synchronous symmetric motion mechanisms, and frame is installed on the vertical carriage through supporting seat; It is one group of member that two gears of rocking bar symmetry clamping that have a positive stop connect firmly, the spacing unlatching locking in positive stop constraint skylight.
Described lamina membranacea pressure-release assembly is an overhead type release of pressure lamina membranacea top cover, is made up of low malleable casting thin web, pressing plate, sealing mat, fastening assembly and upper frame.The same hull girder in upper frame outer ring, hull plate connect firmly one, place lamina membranacea in the upper frame inner ring concave station seam, through pressing plate and bolton locking.To be that this upright ventilating shaft ventilation fan is normal ventilate or during the inverted ventilation operation in 1.25～1.4 times of the maximum wind pressure power 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 roused to release immediately puts the detonation pressure momentum, realizes guide's release of pressure rapidly.Can be after blast wave disappears, when explosion proof door falls pithead position after rise in time with subsequent use lamina membranacea replacement top cover sealing well head.
Described door body up-down hydraulic means is four groups and is a guiding device that body up-down SEQ moves along hydraulic cylinder < track >, roof pressure explosion proof door locking mechanism when also being the operation of natural ventilation overhead door body and inverted ventilation.This device is made up of semi girder stand, stand beam end holder, hydraulic cylinder and hinged support seat etc.Stand is bearing on the existing weight bracket footing foundation face; Hydraulic cylinder connects with holder in the stand through flange bolt; Be that cylinder body is fixed, the vertical installation form of piston rod movement; Hydraulic cylinder rear end tails mounting means is a flange arrangement, and the front end head is hinged on the supporting base for the ball pivot earrings, and supporting base connects firmly with hull girder; Hydraulic cylinder has buffer and fairlead structure, realizes that constraint door body goes up and down along cylinder barrel < track>guiding movement.
Described permanent magnet mechanism is the microscler magnetic field sources magnet steel that permanent-magnet material is processed, the locking device that the adhesive skylight is closed when being normal ventilation and inverted ventilation operation.Shared two groups of four magnet steel in every group of skylight, left and right sash are respectively with one group of two magnet steel: in inboard facade of the both sides of the outside of left and right sash beneath window hull girder or plane, with horizontal axis, skylight serves as that symmetry is vertically arranged two magnet steel separately.
Total the suction-combining force of every group of skylight magnetic field sources 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 sources impacts explosion proof door; The 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. are formed.
1. hydraulic power unit; The special accumulator group that is made up of a plurality of accumulators of being provided with is as the hydraulic cylinder emergency power supply: when incident generation and pumping plant shut down again; Accumulator group internal potential energy can satisfy in short-term moment to hydraulic cylinder supply pressure oil, carries out piston rod withdrawal pull-up explosion proof door and rises and open.Pressure controller monitoring accumulator group duty is set.
2. the motionless operating mode fully of the treating when hydraulic cylinder during normal the ventilation is long, 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 impacted explosion proof door, (1) explosion proof door rose rapidly and promotes piston rod the hydraulic cylinder oil pressure is risen, and fluid is opened through the rodless cavity oil-out and got into the fuel tank off-load after flowing into the hydraulic control system precursor overflow valve; (2) be arranged on the heat transfer agent that detects blast wave blast and air velocity transducer in the upright ventilating shaft and be delivered to the ground monitoring processing center; Its signal of telecommunication is through the control of control system program; With the hydraulic potential energy converting and energy of accumulator group is to open oil-in supply pressure oil to the hydraulic cylinder rod chamber, and piston rod fast retractile pull-up explosion proof door is opened to unload and put blast wave air pressure.
(3) explosion proof door is opened the transducing signal that puts in place and through control program hydraulic cylinder changed into and out of hydraulic fluid port: the hydraulic fluid port of rod chamber is that oil-out is closed, the hydraulic fluid port of rodless cavity is that oil-in is closed, and gets into piston rod movement switching-over control program and prepares.
(4) program controlled mode that combines with time lag of the transducing signal feedback quantity that disappears of blast wave makes hydraulic cylinder carry out piston rod and stretches out the ejection explosion proof door and descend, and the realization explosion proof door resets fast automatically and cuts out well head.
(5) explosion proof door cuts out the sensor signal that puts in place and through programme-control hydraulic cylinder changed into and out of hydraulic fluid port: the rod chamber hydraulic fluid port is oil-in and closes that the rodless cavity hydraulic fluid port is an overflow oil return oil-out, the hydraulic cylinder operating mode when promptly returning to normal the ventilation.
3. hydraulic control and electric vapour transmission program control system is made up 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 is stretched, is contracted and hydraulic fluid port conversion operating mode; 4. the pumping plant pump group condition that opens, stops work; 5. accumulator group duty operating mode; 6. supply, the distribution operating mode.
(2) controlled hydraulic system is to convert the hydraulic control system that hydraulic control signal is main mode with control valves such as electromagnetism, electric liquid or electric-hydraulic proportions into through the signal of telecommunication control that electrical control and programmable logic controller send.
Hydraulic circuit mainly contains: 1. four groups of hydraulic cylinders bi-directional synchronization loops of motion of stretching, contract; 2. switching-over, control, the locking loop of hydraulic cylinder piston motion; 3. hydraulic cylinder is into and out of the commutation loop of hydraulic fluid port; 4. accumulator group duty and pumping plant pump group are opened fuel feeding or off-load, shutdown control loop; 5. the accumulator group is met an urgent need and is supplied the conversion and control loop of pressure oil to hydraulic cylinder.
(3) electrical control is based on the explosion proof door and the hydraulic cylinder long distance control system of programmable logic controller and KingView.Have automatic, long-range, (promptly near control) three kinds of control modes realize controls such as explosion proof door and hydraulic cylinders on the spot.
1. automatic control mode data acquisition, treatment conversion are normal voltage or current signal; Through programmed instruction electric control element and the hydraulic control loop that programmable logic controller is set, realize controls such as hydraulic power unit, hydraulic cylinder, accumulator group duty and steering hydraulic oil supply cylinders.
2. Long-distance Control mode inverted ventilation operation: in machine room,, carry out piston rod and stretch out the locking of roof pressure explosion proof door through < control far away>converter and action button control hydraulic cylinder; When inverted ventilation finishes, control hydraulic cylinder again and carry out after the locking of piston rod releasing to explosion proof door the conversion of programme-control hydraulic cylinder oil inlet and outlet.Natural ventilation: operation < long-range>converter rises with < rising>control button realization explosion proof door and opens; When recovering normal the ventilation, operation < decline>button descends explosion proof door and cuts out well head, and the programme-control hydraulic cylinder is changed into and out of hydraulic fluid port.
3. control mode is the method for operating that the two places one identical with < control far away>are controlled promptly in pumping plant switchgear house operation < inverted ventilation operation>or < natural ventilation>control on the spot.
It respectively is one group of accumulator jar group that is equipped with mutually or other battery powers conduct < anxious stand-by power source>that emergency power supply is installed in machine room and the pumping plant switchgear house especially: when needing the explosion proof door unlatching to carry out natural ventilation because of the accident interruption of power supply, the accumulator jar group is specially for controlling the control valve and other electric device supply powers that converts hydraulic control signal into the signal of telecommunication in the hydraulic system.The mode of employing < control far away>or < nearly control>one of which is also with < anxious stand-by power source>switching controller; Through program control oily with hydraulic control system instruction accumulator group hydraulic steering cylinder rod chamber hydraulic fluid port supply pressure; Carry out the rising of piston rod withdrawal pull-up explosion proof door and open, realize natural ventilation.Behind the service restoration, before normal the ventilation, then stretch out and push explosion proof door and descend and close well head according to operation sequence control liquid presses piston pole.
Display screen in the machine room is through 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 is realized remote monitoring.
The invention has the beneficial effects as follows;
1. when the ventilating shaft mouth was found in the wave impact of blasting, explosion proof door fast reaction guide release discharged 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 is put detonation pressure momentum much smaller than blast wave air pressure by instant bulging releasing because of its rated pressure, realizes guide's release of pressure rapidly, has alleviated the impact force to housing effectively; (2) four groups of skylights on the housing face are also opened immediately to drain to unload under blast wave air pressure impacts and are put the detonation pressure momentum, realize quick guide's release, cut down, eliminate the destructive power of blast wave to explosion proof door effectively; Left and right luffer boards when (3) open in the skylight have the locking constraint of positive stop in a facade angle restriction and the 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 rise to open to drain to unload along four groups of hydraulic cylinders < track>synchronized movement immediately and put blast wave, one of which, 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 withdrawal guiding explosion proof door rises; They are two years old; The blast wave transducing signal is opened to hydraulic cylinder rod chamber oil-in supply pressure oil with hydraulic control system instruction accumulator group oil-feed port through program control; Short moment piston rod withdrawal pull-up explosion proof door rising complete opening is drained to unload and is put blast wave, has protected explosion proof door and fan unit safe handling effectively.
Prior art explosion proof door facility does not possess < release of pressure>< 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 realization blast wave release that the present invention rises automatically and opens three kinds of approach through release of pressure, guide's release and door body, so explosion proof door possesses < explosion-proof>function.
2. after blast wave disappeared, explosion proof door descended to resetting automatically and cuts out well head, and ventilation fan runs well and ventilates.
(1) in guide's pressure relief device in the skylight of enable possition because of its plate face gravity depart from the hinge axis center of gravity follow transmission device synchronously automatically landing reset, and under the effect of magnetic field sources magnet steel the suction-combining force, fit in the window tight closing reliably.
(2) the blast wave transducing signal follows the disappearance of blast wave closely and disappears, and according to the mode that the transducing signal feedback quantity combines with time lag, programme-control is carried out piston rod to hydraulic cylinder and 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 then rely on deadweight and ventilation fan negative pressure to close well head.
(3) explosion proof door can be in time with subsequent use 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) since the total the suction-combining force of magnet steel in every group of skylight greater than the maximum wind pressure power of inverted ventilation operation, four groups of skylights are therefore motionless by < locking>safely and reliably, need not artificial time operation and can realize the inverted ventilation operation.
(2) adopt the mode of < control far away>or < nearly control>one of which to control the locking of hydraulic cylinder piston rod roof pressure explosion proof door; Realize operation inverted ventilation fast; Inverted ventilation finishes the back and adopts aforementioned control mode to remove the locking of piston rod roof pressure explosion proof door, makes 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 be satisfied 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) solid so stop the ventilation fan running; Need explosion proof door to open natural ventilation: to adopt the control mode of < control far away>or < nearly control>one of which to start pumping plant; Operation < rising>button is implemented that hydraulic cylinder is controlled the rising of execution piston rod withdrawal pull-up explosion proof door and is opened natural ventilation.When recovery was normally ventilated, operation < decline>button got final product, and is controlled the conversion of hydraulic cylinder hydraulic fluid port afterwards by stored program controlled.
When needing natural ventilation during (2) because of power failure: the mode that adopts < control far away>or < nearly control>one of which; And with < anxious stand-by power source>conversion and control and < rising>operation; Program control electric control element with hydraulic control system is supplied power by the accumulator jar group, and Hydraulic Elements and hydraulic cylinder supply pressure oil by the accumulator group, and the realization explosion proof door rises and opens natural ventilation; Restore electricity when changing normal ventilation over to, the switching controller that operation is relevant can normally ventilate with operation < decline>button.
Prior art is only utilized the natural ventilation pressure at weight group traction explosion proof door and upright ventilating shaft mouth place when natural ventilation, the explosion proof door unlatching of can not rising automatically, and explosion proof door can not freely descend to resetting and cuts out well head when normally ventilating.
Description of drawings
Fig. 1, Figure 1A-Fig. 1 D are the facility structure accompanying drawings of existing upright ventilating shaft explosion proof door.
Fig. 1 is that existing explosion proof door facility is arranged the structure facade main view that founds ventilating shaft to air outlet with down-hole return air flow path.
Figure 1A is the structure vertical view of explosion proof door shown in Figure 1: the continuous oil well that leads to oil groove 9 that 1-store oil well, explosion proof door inner and outer air pressure isolating seal are used; 10-door body seat board is both the position that compresses locking when inverted ventilation moves.
Figure 1B is the deep cutting view that amplifies along A-A line among 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 bit >-when normally ventilating, the unlocking state when reversing device breaks away from the door body; During the operation of < inverted ventilation position>inverted ventilation, the reversing device precession is pressed into the seat board blocking.
Fig. 1 D is the deep cutting view along B-B line among 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 and down-hole return air flow path founds ventilating shaft to the structure facade main view that goes out air door.The pumping plant machine room and the switchgear house of hydraulic drive of < Hydraulic Station>body lifting hydraulic cylinder and control system.
Fig. 2 A is the structure amplification plan view of explosion proof door shown in Figure 2.
Fig. 2 B is the deep cutting view that amplifies along C-C line among 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 among 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 E-E line amplifies in Fig. 2 F deep cutting view, be the structural representation of guide's pressure relief device 21 when closing with skylight 22.
Fig. 2 H be transmission device 30 shown in Fig. 2 G in the skylight 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 the skylight the 22 structural representation stereograms that amplify when opening.
Fig. 2 J be A shown in Fig. 2 G to the structural representation stereogram that amplifies when 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 accompanying drawing and embodiment the present invention is further specified.
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 upright ventilating shaft explosion proof door after blast wave of the present invention discharges release shown in Fig. 2, Fig. 2 A-Fig. 2 J mainly is made up of explosion proof door housing 8, guide's pressure relief device 21, lamina membranacea pressure-release assembly 15, permanent magnet mechanism, door body up-down hydraulic means and hydraulic drive and control system etc.
One. described explosion proof door is claimed a body again, is the rigid unitary structure that is connected firmly each other by bottom mounting, middle part seat board 10 and upper body 8.
12 hull girder 8-1 that explosion proof door top is uniformly distributed with connect firmly with housing 8, and housing 8 is the truncate normal cone shape steel plate shell face of 150 ° of cone angles; Whenever set a roof beam in place and connect firmly with upper frame 20 through bolt 8-2 connection 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 is made up of four groups of skylights 22 and eight cover transmission devices 30.
1. skylight 22 is made up 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 installed on vertical joist 26 and the cross girders 27.
Skylight 22; On the housing face 8 between the center line both sides of per two supporting bases 14, two the hull girder 8-1, offer one group of skylight opening; The window axis is the two angle angle separated times of setting a roof beam in place; Be the plain line between upper frame 20 to housing bottom surface sideline, the window center height is in 0.65～0.7 times of this element line length; The end points on following window limit is in the 80-120mm to pit shaft mouth plan range, and hem width equals the span of the inside between these limit two end carriages, and last window hem width is the span of the inside between these limit two end carriages.
Left side 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 overlaps and is inserted on the same hinge axis 23 after 25-1 connects firmly again, and two fan windows relatively rotate around its axis jointly and open or close; Hinge axis 23 two ends are bearing on the vertical joist 26 through splicing sleeve 24, and vertical joist upper/lower terminal connects firmly one with window upper and lower two parallel cross girders 27, 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 connects firmly with bearing 45 with separately bearing plate 46 in the plate the inside, on the connecting rod 41 that is articulated in transmission device 30 through bearing 45 and the connecting rod 42.
The facade angle of left and right sash plate when complete opening is 6 °～9 °, and locks with left and right positive stop 38 and 39 in the transmission device 30.
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, follow transmission device and land to reset synchronously and close well head automatically because the restriction of left and right sash plate facade angle makes its plate face gravity depart from hinge axis 23 centers of gravity.
2. transmission device 30, be have reverse, arc is engagement type, two groups of devices that synchronism mechanism is combined integrated in relative rotation are symmetrically arranged.Two groups of mechanism's main members of one cover 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.The physical dimension and the technical characterictic of two or the one group members often 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 vertical joist transversal line both sides up and down; Two groups of synchronism mechanisms of every covering device were listed in the left and right sides in 40 minutes through two parallel pinion shaft in the frame 31, and frame 31 is fixed on the vertical joist 26 through two bearings 32, bolts 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; The upright angle to work plane and rocking bar two centerline holes of positive stop is that 20 °, face height are 0.4～0.5 times of gear 34.35 tip diameters; Per two stub end symmetry gears of clamping that have a positive stop formula rocking bar and to connect firmly into disjunctor be an assembly; Promptly the left and right sides gear rocking bar on two parallel axes respectively has one group of two positive stop, and the microcephaly of each assembly rocking bar holds that arc connecting rod 41 of clamping and 42 usefulness rocking bar bearing pins 44 are hinged respectively; Connecting rod 41 and 42 end in addition is hinged through pitman pin 43 and two bearings 45 respectively, and the bearing plate 46 with left window 22-1, right window 22-2 plate the inside connects firmly again.
When opened in skylight 22, left and right sash followed with the left and right sides positive stop 38 and 39 of gear rocking bar disjunctor that gear pair is reverse, arc, and the upright stop when work plane contacts to latched position of two positive stops is on two gears 34 and 35 center to center distance perpendicular bisectors.
Three. described lamina membranacea pressure-release assembly top cover 15 is top covers that the slicer board structure is set at housing 8 tops.Mainly form by pressing plate 17, lamina membranacea 18, sealing mat 19, cover plate bolt 16 and upper frame 20 etc.
1. lamina membranacea 18 is low malleable casting slicer boards, and plate surface diameter is 0.16～0.22 times of this upright ventilating shaft mouth diameter; When the rated pressure of lamina membranacea is the operation of the current normal ventilation of this upright ventilating shaft ventilation fan or inverted ventilation in 1.25～1.4 times of maximum wind pressure power.
2. upper frame 20, are housing 8 tops connect firmly one with hull girder 8-1 carriers.Upper frame 20 inner lanes have the concave station seam to place lamina membranacea 18 and sealing mat 19, are locked on the upper frame 20 through pressing plate 17 and bolt assembly 16.
When blast wave impacted explosion proof door, the instant drum of blast wave air pressure that top cover lamina membranacea 18 is exceeded the lamina membranacea rated pressure was released and is put the detonation pressure momentum, realizes guide's release of pressure rapidly.Explosion proof door descended when resetting well head after blast wave disappeared, can be in time with subsequent use lamina membranacea replacement top cover closure casing, well head.
Four. described door body up-down hydraulic means, form by 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 with its end face stiffener 11-1 connect firmly constitute hydraulic cylinder holder 12, four installing hole flange seats 13-2 bolt 13-1 center line and hydraulic cylinder 13 axis same as upright 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 the double acting single-piston-rod hydraulic cylinders, and have buffer and fairlead structure, be the constraint explosion proof door rise along cylinder barrel 13-3 < track>moving equilibrium do not derail, reset accurately < guide rail>steadily descends; The execution hydraulic cylinder of the motionless locking of roof pressure explosion proof door when also being simultaneously the reversing air current of ventilator operation.The hydraulic cylinder installation form is that cylinder body is fixed, the vertical installation of piston rod movement, and mounting means is that the hydraulic cylinder rear end tails is the structure that flange connects, and the front end head is that ball pivot earrings and supporting base 14 are hinged.
The minimum stroke of hydraulic cylinder 13 piston rods withdrawal pull-up door body 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 total thrust of roof pressure door body.
Explosion proof door when (1) normally ventilating is cutting out the well head state; Its operating position transducing signal after information processing, through electric stored program controlled and pumping plant hydraulic control system make hydraulic cylinder rod chamber hydraulic fluid port place oil-in and close, the rodless cavity hydraulic fluid port places to open and overflows back hydraulic fluid port.
When (2) blasting the wave impact explosion proof door: one of which; The door body that rises rapidly pushes piston rod and causes the hydraulic cylinder oil liquid pressure to rise; Fluid flows into precursor overflow valve oil-in in the hydraulic control system by the rodless cavity hydraulic fluid port; Begin overflow when surpassing the pilot valve opening pressure, whole flows flowed back to fuel tank when the main valve overflow increased; They are two years old; Blast wave air-flow blast or wind speed transducing signal are after information processing; Through stored program controlled and hydraulic control system; Convert signal of telecommunication control into the hydraulic control signal execution through control valves such as electromagnetism, electric liquid hydraulic cylinder 13 hydraulic fluid port 13-4 are also transferred to hydraulic cylinder rod chamber oil-in supply pressure oil into and out of hydraulic fluid port unlatching, while pumping plant accumulator group oil-feed port, piston rod withdrawal pull-up explosion proof door rising unlatching is unloaded put blast wave air pressure.
(3) the explosion proof door rising is opened the transducing signal that puts in place and carried out hydraulic cylinder 13 hydraulic fluid port 13-4 conversion by the control system in above-mentioned (1) (2) according to setting program: the rod chamber hydraulic fluid port is changed to oil-out, the rodless cavity hydraulic fluid port is changed to oil-in and closes the control program of preparing before the completion piston motion switching-over simultaneously.
(4) after blast wave disappears; The blast wave transducing signal also disappears immediately; The mode that the 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 the 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 sources device to skylight 22 adhesives locking that permanent-magnet material is processed the magnet steel 29 elements formation of strip.Four magnet steel 29 are used in every group of skylight 22, and wherein left and right sash is respectively with one group two.
Below left sash 22-1 left window, in the inboard facade of both sides hull girder 8-1 or plane of the right beneath window of right sash 22-2; With skylight 22 axiss of pitch is that symmetry vertically is uniformly distributed with and inlays separately 29: two center to center distance of one group of two magnet steel and equal in 0.6～0.7 times of this window length of side, when every group of skylight total the suction-combining force of 22 magnetic field sources is the operation of this reversing air current of ventilator in 1.2～1.4 times of maximum wind pressure power.
2. when normally ventilating, skylight 22 rely on from gravity and ventilation fan negative pressure close window, well head, 29 of magnet steel are held skylight 22 reliably and are fitted on the window sealing mat.
3. when inverted ventilation moved, total the suction-combining force of magnetic field sources was locked skylight 22 reliably by adhesive.
4. the 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 sources, 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 that forms such as program control.
(1) hydraulic power unit is provided with three hydraulic pumps, and wherein 1#, 2# pump are working barrel, and the 3# pump is a stand by pump; 4～6 accumulators are set and, are furnished with accumulator control valve group and pressure controller etc. with constituting the accumulator group as emergency power supply.
1. the application of accumulator group: hydraulic cylinder 13 off-loads quit work motionlessly when long during normal the ventilation, and the pump group is only done intermittent operation in short-term to the accumulator fuel feeding time.When accident is blasted the upright ventilating shaft of wave impact; Its transducing signal will lay in fluid potential energy hydraulic steering cylinder 13 rod chamber hydraulic fluid port supply pressures oil through program control and hydraulic control system control accumulator group, carry out piston rod withdrawal pull-up explosion proof door rising unlatching at 2～4 seconds in the short instantaneous time and unload and put the detonation pressure momentum.
2. accumulator group duty method: (1) initial 1#, 2# pump fuel feeding simultaneously when oil-filled; When (2) oil pressure rose to 0.96 times of maximum working pressure, the pressure signal of pressure controller made the off-load of 1# pump, 2# pump continue fuel feeding; (3) oil pressure rises to when equaling maximum working pressure, and pressure signal makes the off-load of 2# pump, and pumping plant stops to accumulator group fuel feeding.The fluid potential energy that this moment, the accumulator group stored is the pressure oil potential energy that satisfies hydraulic cylinder 13 piston rods withdrawal pull-up explosion proof door; When (4) oil pressure dropped to 0.9 times of maximum working pressure, pressure signal made 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 the accumulator group is in 1.12～1.14 times of maximum working pressure, i.e. limes superiors oil pressure, and this moment, pumping plant was shut down, and accumulator group oil pressure is laid in as emergency power supply.
(2) hydraulic control is to convert hydraulic control signal into signal of telecommunication control to take as the leading factor, be that the control loop that major component is formed has with function control valves such as electromagnetism, electric liquid and electric-hydraulic proportions:
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 switching-over motion control loop.4. piston rod withdrawal puts in place, piston rod stretches out the locking loop and removes locking control during inverted ventilation.5. accumulator group: the pump group to accumulator fuel feeding, pressure, off-load and shutdown control and accumulator group 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 form 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 display screen, data acquisition, mould/number.
Sensor is provided with: 1. blast wave air-flow blast and air velocity transducer are arranged near upright ventilating shaft shaft bottom and the 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 and be arranged on stand 11 and piston rod head.4. accumulator group duty pressure control transducer-translating device is arranged on the accumulator group oil feed line.5. supply distribution monitoring signal of telecommunication transducer-translating device to be arranged on the input port end that supplies power distribution equipment.
Anxious stand-by power source device: in machine room and pumping plant switchgear house, respectively adorn one group of accumulator jar group that is equipped with mutually, the emergency standby power in the time of need opening the explosion proof door natural ventilation as the chance failure interruption of power supply.Anxious stand-by power source is the control valve supply power of controlling with the signal of telecommunication in the hydraulic control system specially and is the unit supply power of electrical equipment in the stored program controlled.Conversion and control devices such as < anxious stand-by power sources>is set simultaneously to be gone up and down to control to hydraulic cylinder.
Stored program controlled is according to the program of setting and each sensor feedback signal; Normal voltage after treatment, the control of the signal of telecommunication of electric current convert hydraulic control signal into; Control pumping plant pump group, hydraulic circuit, accumulator group and hydraulic cylinder 13, and real-time display system operating mode.
The control mode of explosion proof door lifting hydraulic cylinder:
1. when blasting the wave impact explosion proof door, (1) because the rodless cavity hydraulic fluid port has been set to overflow oil return operating mode, the explosion proof door unlatching of can rising automatically; (2) accomplishing the explosion proof door rising by stored program controlled opens.
2. when natural ventilation or inverted ventilation move, adopt the control mode and the method for operating of < control far away>or < the near control>one of which, realize that in machine room or pumping plant switchgear house explosion proof door goes up and down.
Claims (7)
1. a blast wave discharges automatically reset upright ventilating shaft explosion proof door after the release, comprises explosion proof door housing (8), existing store oil well (1) and oil groove (9), stand (11) and a door body lifting hydraulic cylinder (13), inverted ventilation locking device, it is characterized in that:
(1) housing (8) spandrel girder is uniformly distributed with by 12 hull girders (8-1) formation is set, 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 the upper frame (20);
(3) on housing (8) plate face, be uniformly distributed with and offer aperture, four groups of skylights (22); Every group of aperture and 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 sources device of adhesive skylight (22) locking; Magnet steel (29) element of being processed by several permanent-magnet materials constitutes, and this element is embedded in the facade of both sides hull girder (8-1) inboard below the and arranged on left and right sides of aperture, every group of skylight (22) or goes up among the plane;
(5) described stand (11) is the beam type rigid structure; Four Forming frameworks (11) are bearing in respectively on existing weight bracket (4) the footing foundation seat surface; Its top cross beam end is provided with hydraulic cylinder (13) holder (12); Connect with vertically arranged hydraulic cylinder (13) rear end tails flange seat (13-2) through bolt (13-1); Hydraulic cylinder (13) front end head is that the ball pivot earrings is hinged with the bearing (14) above the 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) through oil pipe line;
(6) be provided with hydraulic system, comprise pumping plant, accumulator group, hydraulic cylinder (13) and hydraulic control unit, hydraulic control is is master mode signal of telecommunication control is converted into hydraulic control signal, be the device that major component is formed with electromagnetism and electric hydraulic control valve;
(7) be provided with electric stored program controlled, and consist of hybrid system with hydraulic system, this system 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 up-down sensor and hydraulic cylinder (13) control mode converter.
2. according to automatically reset upright 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: described upper frame (20) inner lane is provided with the concave station seam and places sealing mat (19) and lamina membranacea (18), is locked through pressing plate (17) and bolt (16); Described lamina membranacea (18) is that material is the thin plate of low tough foundry goods, and plate surface diameter is 0.16～0.22 times of upright 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 upright ventilating shaft explosion proof door after the blast wave release release of claim 1, wherein said guide's pressure relief device (21) mainly is made up of skylight (22) and transmission device (30), it is characterized in that:
(1) described skylight (22) totally four groups; Vertical joist (26) center line both sides are provided with the left sash (22-1) and the right sash (22-2) of symmetry in the mouth of every group of skylight (22), and coaxial type plate (25-2), hinge cover (25-1) and hinge axis (23) are connected in splicing sleeve (24) successively and are bearing in vertical joist (26) above the center line;
(2) left and right window (22-1) (22-2) the plate inner face be provided with separately bearing plate (46) and bearing (45) connect, through pitman pin (43), hinged with left connecting rod (41), the right connecting rod (42) of lazy-tongs in the transmission device (30);
(3) center line between last per two supporting bases (14) of housing (8) is on the plain line of conical shell face; 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; Following window hem width end points place is 80-120mm to the flat distance of upright ventilating shaft mouth the inside, and its hem width equals the span between these two ends, limit hull girders (8-1), and last 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 complete opening;
(5) described transmission device (30) is to be provided with to have the left and right symmetry reverse, that arc is engagement type and two groups of lazy-tongs composite sets of relative motion; Every group of skylight (22) is provided with two cover transmission devices (30), and this device connects with vertical joist (26) through frame (31), bearing (32) and bolt (33);
(6) two groups of lazy-tongs of every covering device (30) are connected on left and right window (22-1) bearing (45) (22-2) by one group of frame (31), two gear shafts (40), gear pair (34) (35), two rocking bars (36) (37) that have the assembly of positive stop (38) (39), two rocking bar bearing pins (44), two connecting rods (41) (42), two pitman pins (43) successively; The physical dimension of corresponding two or two assemblies often that are provided with of symmetry is identical with technical characterictic in the lazy-tongs;
(7) described assembly is: limit is drawn the same rocking bar of block (38) (39) (36) (37) to be fixedly connected to integral member or is made into integral member; Per two gears of rocking bar clamping that have a positive stop are fixedly connected and are integral member;
When (8) positive stop (38) (39) was followed gear pair (34) (35) rotation, the stop when its spacing work plane touches latched position was 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 and arranged on left and right sides through two gear shafts (40) symmetry branch.
4. according to automatically reset upright ventilating shaft explosion proof door after the blast wave release release of claim 1, wherein said inverted ventilation locking device is characterized in that:
When (1) magnet steel (29) of every cover magnetic field sources 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), with skylight (22) axis of pitch serve as the symmetrical magnet steel (29) that vertically is uniformly distributed with, fixedly inlays separately a group two or equal number of packages up and down, and 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 upright 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 fairlead 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 place oil-in and close, the rodless cavity hydraulic fluid port places and overflows back hydraulic fluid port; Blast wave impact explosion proof door rise open put in place after, the rod chamber hydraulic fluid port place oil return opening and close, the rodless cavity hydraulic fluid port places 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 places oil-in, rod chamber hydraulic fluid port to place oil return opening, closes immediately into and out of hydraulic fluid port after the locking of piston rod ejection explosion proof door, after inverted ventilation finishes to recover normal the ventilation, and the setting the during change working of two hydraulic fluid ports to normal the ventilation.
6. according to automatically reset upright 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 the parallelly connected accumulator group of using of several accumulators, is equipped with control valve group and pressure controller monitoring pump group and accumulator group 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 group of the flow distributing and collecting formula bi-directional synchronization loop of four groups of door body lifting hydraulic cylinders (13), ventilation fan changed the loop fast to hydraulic cylinder (13) fuel feeding.
7. according to automatically reset upright 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 group operating mode transducer-translating device; And the information parameter treatment conversion that will gather in real time is normal voltage or current signal, pumping plant, accumulator group and hydraulic cylinder (13) controlled with the hydraulic control loop through the programmed instruction ECU that programmable logic controller is set;
(2) be provided with Long-distance Control and control method on the spot, to hydraulic cylinder (13) control of going up and down;
(3) machine room and pumping plant are provided with anxious stand-by power source accumulator jar group and switching controller and control hydraulic cylinder (13) with the accumulator group and go up and down.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN102410044A true CN102410044A (en) | 2012-04-11 |
| CN102410044B CN102410044B (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN114109474A (en) * | 2021-08-25 | 2022-03-01 | 河南理工大学 | Intelligent coal mine air shaft explosion door experiment device and use method |
| 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 |
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