CN104074544A - Vertical air shaft double-door type explosion-proof system - Google Patents
Vertical air shaft double-door type explosion-proof system Download PDFInfo
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- CN104074544A CN104074544A CN201410272037.XA CN201410272037A CN104074544A CN 104074544 A CN104074544 A CN 104074544A CN 201410272037 A CN201410272037 A CN 201410272037A CN 104074544 A CN104074544 A CN 104074544A
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Abstract
The invention discloses a vertical air shaft double-door type explosion-proof system, which mainly consists of a gable wall body (2), door bodies (3), a buffer framework (4) and a flexible buffer wall (5), wherein the gable wall body and the buffer framework are respectively fixed on a wellhead steel reinforced concrete base (1); small holes are respectively and correspondingly formed in upper and lower cross beams arranged at the left and right sides of the buffer framework at fixed intervals; the flexible buffer wall consists of a plurality of string-shaped buffer units; the string-shaped buffer units are correspondingly fixed in the small holes formed in the upper and lower cross beams arranged at the left and right sides of the buffer framework; the door bodies (3) are respectively arranged on a short upright post of the buffer framework (4) through a door shaft hinge (6); and the two ends of the door bodies (3) are supported on the gable wall body. The vertical air shaft double-door type explosion-proof system has the advantages that the fast explosion release and automatic resetting can be realized; higher explosion-proof performance is realized; and the vertical air shaft double-door type explosion-proof system is applicable to new and old air shaft building.
Description
Technical field
The present invention relates to a kind of explosion-proof door of coal miine vertical shaft that can open fast and reset, is that protection mine main ventilator is avoided the protector that explosion wave is injured, and belongs to mine ventilation safety technics field.
Background technology
According to safety of China laws and regulations requirement, in coal mine ventilation system, return air well head should be installed explosion proof door.The effect of explosion proof door is to utilize shock wave straightline propagation characteristic, the impact air-flow that the well shooting of releasing fast produces, thus protection mine main ventilator exempts from damage.
At present, the vertical ventilating shaft of China's coal-mine generally adopts a kind of canopy-type explosion proof door, and it is comprised of door body, sealing oil groove, pulley yoke, counterweight etc.This explosion proof door is by the following major defect of numerous accident alleged occurrences: after 1. explosion proof door is rushed to open, stressed often unbalanced in rising and dropping process, a door body is easily offset, deflection, and lower backwardness is difficult to self-resetting, cause leaking out in a large number, even Air escape branch; 2. explosion proof door is without buffering and stopping means, and antiknock ability is low, and when brisance is powerful, explosion proof door is flown by punching and away from well head.Explosion proof door is flown behind ground by punching, even if profile is intact, in the situation that not lacking lifting machine, relies on manpower to be difficult to again cover, thereby causes down-hole main ventilation system cannot recover for a long time, misses rescue opportunity, and extension causes the accident.
Summary of the invention
For above-mentioned problem, the object of the invention is for the technological deficiency of existing explosion proof door and potential safety hazard, proposes the Double door type explosion protection system of a kind of venting of dust explosion fast self-resetting.
The present invention solves the problems of the technologies described above adopted technical scheme as described below:
A vertical ventilating shaft Double door type explosion protection system, described explosion protection system is mainly comprised of gable body, door body, buffering framework, flexible buffer wall,
Described gable body and buffering framework are individually fixed on well head steel reinforced concrete pedestal, and buffering framework comprises crossbeam, long column and short column, on the upper and lower crossbeam of the buffering framework left and right sides, by constant spacing correspondence, aperture are set respectively,
Flexible buffer wall is comprised of some string shape buffer cells, and described string shape buffer cell correspondence is fixed in the aperture of the upper and lower crossbeam in the buffering right both sides of framework,
Described Men Tiwei two fans, are installed on the short column of buffering framework by door-hinge hinge respectively, the two end supports of door body on gable body,
On the steel reinforced concrete pedestal across well head, supporting traverse is set, described supporting traverse is a body beam, and two, supporting traverse top is domatic to be contacted with two fan door bodies respectively,
Above the crossbeam of buffering framework, corner arranges pulley yoke, and wirerope-winding is on pulley yoke, and wire rope one end articulates variable mass counterweight, and the other end is walked around pulley yoke and is connected with door body.
Further, the string shape buffer cell of described flexible buffer wall comprises spring pull bar and some buffer stoppers, described buffer stopper is set on respectively on spring pull bar, the corresponding insertion in the aperture that cushions the upper and lower crossbeam in the framework left and right sides in two ends of described string shape buffer cell, and adopt nut and snap close to fix.
Further, the string shape buffer cell of described flexible buffer wall comprises spring pull bar, some buffer stoppers and pallet, described buffer stopper is mutually bonding with pallet, and be set on spring pull bar, the corresponding insertion in the aperture that cushions the upper and lower crossbeam in the framework left and right sides in two ends of described string shape buffer cell, and adopt nut and snap close to fix.
Further, described door-hinge hinge comprises axle bed, bearing shell, is provided with flexible buffer cover between axle bed and bearing shell.
Further, described variable mass counterweight is in series by some balancing weights, and variable mass counterweight arranges 4 groups altogether, and every group of variable mass counterweight sets a cylindric base.
Further, the long and short column bottom of described buffering framework is welded with respectively flange and reinforcing rib, and is fixed with bolts in anchor note on the column base on steel reinforced concrete pedestal.
Further, described gable body is triangle steel structure wall or steel reinforced concrete cast wall, on gable body two side slope upper berths, establishes weather strip.
Further, described supporting traverse is established weather strip with the two side slope upper berths that door body contacts, and the domatic angle of supporting traverse equals the domatic angle of gable body, and the bottom of supporting traverse is wedge shape.
Further, described door body is comprised of door body framework and door-plate, and door-plate is fixed on a body framework with welding, mode bonding or riveted joint, and door-plate is individual layer, bilayer or multilayer.
Further again, described pulley yoke arranges 4 groups altogether, is fixed with bolts respectively in the crossbeam top of buffering framework corner.
Beneficial effect of the present invention is as follows:
(1) adopt the key positions such as flexible buffer wall, flexible buffer cover shutter body, door-hinge hinge, make explosion protection system there is the higher capability of antidetonance;
(2) adopt variable mass counterweight, guarantee explosion protection system normal opening and closing under various states;
(3) adopt supporting traverse, external except support door, also reduce sealing difficulty, improved the reliability of sealing, it is wedge shape that supporting traverse is met corrugated, can reduce shock wave it is impacted;
(4) when blast in down-hole, door is after a body washes open, and impacting with high pressure air-flow is released on route except supporting traverse, without other obstruction, favourable to venting of dust explosion;
(5) do not affecting under the situation of normal ventilation, can carry out innovation operation to existing explosion protection system, be applicable to new, old ventilating shaft construction simultaneously.
Accompanying drawing explanation
Perspective view when Fig. 1 is the vertical ventilating shaft Double door type explosion protection system closure state of the present invention;
Perspective view when Fig. 2 is the vertical complete opening of ventilating shaft Double door type explosion protection system of the present invention;
Fig. 3 is the perspective view that the vertical ventilating shaft Double door type explosion protection system of the present invention has pallet buffer unit;
Fig. 4 is the perspective view of the vertical ventilating shaft Double door type explosion protection system pallet-free buffer cell of the present invention;
Fig. 5 is the perspective view of the vertical ventilating shaft Double door type explosion protection system door-hinge hinge of the present invention.
In figure, 1 is well head pedestal, and 2 is gable body, and 3 is door body, 4 is buffering framework, and 5 is flexible buffer wall, and 5-1 is spring pull bar, and 5-2 is buffer stopper, 5-3 is pallet, and 6 is door-hinge hinge, and 6-1 is axle bed, 6-2 is flexible buffer cover, and 6-3 is bearing shell, and 6-4 is door-hinge, 7 is supporting traverse, and 8 is pulley yoke, and 9 is wire rope, 10 is variable mass counterweight, and 11 is counter weight base, and 12 is weather strip.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, present invention is described.
A vertical ventilating shaft Double door type explosion protection system, as shown in Figure 1, is mainly comprised of gable body 2, door body 3, buffering framework 4, flexible buffer wall 5, door-hinge hinge 6, supporting traverse 7, pulley yoke 8, wire rope 9, variable mass counterweight 10 etc.Gable body 2 is triangle steel structure wall, or is steel reinforced concrete cast wall, and for support door body 3, weather strip 12 is established on its two side slopes upper berth.Door body 3 is comprised of door body framework and door-plate.Door body 3 is installed on buffering framework 4 by door-hinge hinge 6, as shown in Figure 5, between the axle bed 6-1 of door-hinge hinge 6, bearing shell 6-3, be provided with flexible buffer cover 6-2, buffering framework 4 consists of 6 crossbeams, 4 long columns, some short columns, and integral installation is on well head steel reinforced concrete basis 1.Flexible buffer wall 5 consists of spring pull bar 5-1, buffer stopper 5-2, pallet 5-3, as shown in Figure 3.Spring pull bar 5-1 wears the pallet 5-3 that buffer stopper 5-2 is housed to be unified into string shape buffer cell, and two ends adopt nut and snap close, are fixed between the lower and upper cross-member of buffering framework 4.Also can not use pallet 5-3, as shown in Figure 4, buffer stopper is directly set on spring pull bar, form buffer cell.The adjacent arranged of buffer cell, forms flexible buffer wall 5.Supporting traverse 7 is a body beam, across well head, is fixed on well head steel reinforced concrete pedestal, and its effect is support door body 3, and it establishes weather strip 12 with the two side slope upper berths that door body 3 contacts.Pulley yoke 8 is with bolts, is fixed on buffering framework 4 tops, arranges altogether 4 groups.Variable mass counterweight 10 is to be in series by some balancing weights, is articulated in haulage cable 9 one end, and haulage cable 9 other ends are walked around pulley yoke, and fellow disciple's body 3 connects.Every group of variable mass counterweight 10 sets a cylindric base 11, for retraining balancing weight.
As shown in Figure 1, under normal ventilation state, two fan door bodies 3 of explosion protection system, under deadweight and ventilation fan suction function, cover above well head.On the contact surface of door body 3 with gable body 2, supporting traverse 7, weather strip 12 is installed, to eliminate or to reduce and leak out.After door body covers tightly, same level face forms certain slope, can avoid rainwater to gather.
Under blowing-out state, explosion protection system door body 3, because losing suction function, under counterweight 10 tractions, is outwarded winding to a certain position, can realize natural ventilation.While carrying out inverted ventilation, buckle inverted ventilation snap close.
As shown in Figure 2, when blast in down-hole, explosion protection system door body 3, under explosion wave, counterweight 10 effects, is opened fast, accelerates rotation, clash into flexible buffer wall 5, then rebound, be again subject to high velocity air and impact, hit for the second time flexible buffer wall 5, come and go concussion, until impact air-flow disappears.After explosion wave, door body 3 is under Gravitative Loads, and rotation is fallen, and counterweight 10 plays a role gradually simultaneously, and door body 3, under deadweight, counterweight 10 actings in conjunction, hovers in well head top.After the normal work of ventilation fan, door body 3 can again be built under suction function.In blast impulse process, door-hinge hinge 6 dynamic loading that withstands shocks, flexible buffer cover 6-2 can reduce peak value shock loading, plays 6 effects of protection door-hinge hinge.Flexible buffer wall 5 with door body 3 collision processes in, door body kinetic energy is absorbed and is dissipated, thereby play shutter body 3 effect.
In one embodiment, as Figure 1-Figure 4, gable body 2 is triangle steel structure wall, for support door body 3.Or replace with steel reinforced concrete cast wall, also or by steel structure frame with pouring concrete, form body of wall.On body of wall slope, lay weather strip.
Door body 3 is comprised of door body framework and door-plate.Door-plate is fixed on a body framework in modes such as welding or bonding, riveted joints.Door-plate can be individual layer, bilayer or multilayer.While adopting bilayer or multilayer door-plate, interlayer can be filled buffering energy-absorbing material.The optional corrugated section bar of door-plate, is subject to the pre-allowance of punching distortion to increase.
Door body 3 is installed on the short column of buffering framework 4 by door-hinge hinge 6.As shown in Figure 5, between the axle bed 6-1 of door-hinge hinge 6, bearing shell 6-3, be provided with flexible buffer cover 6-2, to reduce door-hinge and the suffered impact force of buffering framework, improve system antiknock rating.
Buffering framework 4 consists of 6 crossbeams, 4 long columns, some short columns, and integral installation is on well head steel reinforced concrete pedestal 1.On the lower and upper cross-member of buffering framework 4 left and right sides, by constant spacing, be drilled with aperture, for flexible buffer wall 5 is installed.The long and short column bottom of buffering framework 4 is welded with flange and reinforcing rib, is fixed with bolts in anchor note on the column base on steel reinforced concrete pedestal.The left and right sides of buffering framework 4 connects by crossbeam and supports, and forms stable frame body.
Flexible buffer wall 5 has two kinds of embodiments.First kind of way is as shown in Figure 3: body of wall consists of spring pull bar 5-1, buffer stopper 5-2, steel pallet 5-3.Adopt mosaic bonding mode, buffer stopper 5-2 is combined into one with pallet 5-3.Then use spring pull bar 5-1 to be worn and be unified into string shape buffer cell, and the two ends of spring pull bar 5-1 are inserted in the aperture of buffering framework lower and upper cross-member, adopt nut and snap close to be fixed.Ten string buffer cell close-packed arrays are arranged, form flexible buffer wall.The second way is as shown in Figure 4: buffer stopper is directly set on spring pull bar, forms string shape buffer cell, then by method described in first kind of way, be installed on and cushion on framework.The difference of two kinds of modes is whether adopt pallet 5-3.Buffer stopper 5-2 makes with polyurethane rubber or other buffering energy-absorbing materials.The effect of pallet 5-3 is fixing buffer stopper, is beneficial to the energy-absorbing function of performance buffer stopper, but affects the cushioning effect effect of spring pull bar 5-1.Flexible buffer wall is when being subject to clashing into, and spring pull bar 5-1, buffer stopper 5-2 all deform, collaborative performance buffering energy-absorbing function.
Supporting traverse 7 is a body beam, across well head, is fixed on well head steel reinforced concrete pedestal, and its effect is support door body, and creates conditions for sealing.Two, supporting traverse top is domatic to be contacted with two fan door bodies respectively, domatic upper laying weather strip, and domatic angle is with gable body.Supporting traverse 7 bottoms are wedge shape, are beneficial to the air blast of releasing, and reduce self and are hit.
Pulley yoke 8 is with bolts, is fixed on buffering framework 4 upper beam, for variable mass counterweight 10 is installed.
Variable mass counterweight 10 is in series by some balancing weights, is articulated in haulage cable 9 one end.Haulage cable 9 other ends are walked around pulley yoke 8, and fellow disciple's body 3 connects.Variable mass counterweight 10 is in pull-up process, and balancing weight plays a role successively, and counterweight tractive force increases gradually, and it is in dropping process on the contrary, and counterweight alleviates gradually, and tractive force reduces gradually.By changing counterweight, can be for the various states of explosion protection system, opposite house body 3 applies suitable tractive force, guarantees explosion protection system normal opening and closing under various states.Variable mass counterweight 10 arranges 4 groups altogether.Every group of variable mass counterweight sets a cylindric base 11, for retraining the balancing weight falling.
The installation process of the vertical ventilating shaft Double door type explosion protection system of the present invention is: during for old ventilating shaft transformation, first remove the ancillary facilities such as former explosion-proof door guide roller frame, counterweight, construction steel mixed radix plinth 1, cast gable body 2 and supporting traverse pedestal, and lay weather strip 12 on gable body 2 is domatic; Buffering framework 4 is installed, flexible buffer wall 5 is installed, door body 3 is installed, pulley yoke 8 and variable mass counterweight 10 are installed, door body 3 is placed in to full open state; Afterwards, suspend and ventilate, original explosion proof door is hung; Fast Installation supporting traverse 7, supporting traverse 7 has installed weather strip 12 before installation; Then, put down a body, make it in floating state; Restart ventilation fan, door body is closed, ventilates and recovers, installation.While being used for newly setting up ventilating shaft, except not considering to remove original explosion proof door and interim blowing-out problem, work progress is basic identical.
The operating principle of the vertical ventilating shaft Double door type explosion protection system of the present invention: when blast in down-hole, explosion wave arrives after well head, explosion protection system door body 3 is under explosion wave, counterweight effect, open fast, acceleration is around 6 rotations of door-hinge hinge, and whole shock flexible buffer wall 5, and backward well head one side is rebounded.In the process of rebounding, be subject to venting of dust explosion gas shock, hit for the second time flexible buffer wall 5, come and go concussion, until impact air-flow disappears; After explosion wave, door body 3 is under Gravitative Loads, and rotation is fallen, and variable mass counterweight 10 plays a role gradually, and door body 3, under the acting in conjunction of deadweight, counterweight 10, hovers in well head top; After the normal work of ventilation fan, door body 3 can again reset and build under suction function; In blast impulse process, flexible buffer in door-hinge hinge 6 cover pressurized deforms even by conquassation, can play cushioning effect, is beneficial to protection door-hinge hinge 6, reduces to cushion the peak value shock loading on 4 pairs of well head bases 1 of framework simultaneously; Flexible buffer wall 5 with door body 3 collision processes in, the most of kinetic energy of door body 3 is absorbed and is dissipated, thereby play the effect of shutter body.Under the situations such as normal ventilation, inverted ventilation, blowing-out in short-term, operating principle is basic identical with existing explosion proof door.
It should be noted that; above-mentioned specific embodiment is only exemplary; under above-mentioned instruction of the present invention, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion all drop in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above in order to explain object of the present invention, not for limiting the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a vertical ventilating shaft Double door type explosion protection system, is characterized in that, described explosion protection system is mainly comprised of gable body (2), door body (3), buffering framework (4), flexible buffer wall (5),
It is upper that described gable body (2) and buffering framework (4) are individually fixed in well head steel reinforced concrete pedestal (1), and buffering framework (4) comprises crossbeam, long column and short column, on the upper and lower crossbeam of buffering framework (4) left and right sides, by constant spacing correspondence, aperture is set respectively,
Flexible buffer wall (5) is comprised of some string shape buffer cells, and described string shape buffer cell correspondence is fixed in the aperture of the upper and lower crossbeam in buffering framework (4) left and right sides,
Described door body (3) is two fans, by door-hinge hinge (6), be installed on the short column of buffering framework (4) respectively, the two end supports of a body (3) on gable body,
Supporting traverse (7) is set on the steel reinforced concrete pedestal across well head, and described supporting traverse (7) is a body beam, and two, supporting traverse (7) top is domatic to be contacted with two fan door bodies (3) respectively,
In the crossbeam top of buffering framework (4), corner arranges pulley yoke (8), and wire rope (9) is wrapped on pulley yoke, and wire rope (9) one end articulates variable mass counterweight (10), and the other end is walked around pulley yoke (8) and is connected with door body (3).
2. vertical ventilating shaft Double door type explosion protection system as claimed in claim 1, it is characterized in that, the string shape buffer cell of described flexible buffer wall (5) comprises spring pull bar (5-1) and some buffer stoppers (5-2), described buffer stopper (5-2) is set on respectively on spring pull bar (5-1), the corresponding insertion in the aperture that cushions the upper and lower crossbeam in the framework left and right sides in two ends of described string shape buffer cell, and adopt nut and snap close to fix.
3. vertical ventilating shaft Double door type explosion protection system as claimed in claim 1, it is characterized in that, the string shape buffer cell of described flexible buffer wall (5) comprises spring pull bar (5-1), some buffer stoppers (5-2) and pallet (5-3), described buffer stopper (5-2) is mutually bonding with pallet (5-3), and be set on spring pull bar (5-1), the corresponding insertion in the aperture that cushions the upper and lower crossbeam in the framework left and right sides in two ends of described string shape buffer cell, and adopt nut and snap close to fix.
4. found as claimed in claim 2 or claim 3 ventilating shaft Double door type explosion protection system, it is characterized in that, described door-hinge hinge (6) comprises axle bed (6-1), bearing shell (6-3), between axle bed (6-1) and bearing shell (6-3), is provided with flexible buffer cover (6-2).
5. vertical ventilating shaft Double door type explosion protection system as claimed in claim 4, is characterized in that, described variable mass counterweight (10) is in series by some balancing weights, and variable mass counterweight (10) arranges 4 groups altogether, and every group of variable mass counterweight sets a cylindric base (11).
6. vertical ventilating shaft Double door type explosion protection system as claimed in claim 5, is characterized in that, the long and short column bottom of described buffering framework (4) is welded with respectively flange and reinforcing rib, and is fixed with bolts in anchor note on the column base on steel reinforced concrete pedestal.
7. vertical ventilating shaft Double door type explosion protection system as claimed in claim 6, is characterized in that, described gable body (2) is triangle steel structure wall or steel reinforced concrete cast wall, on gable body (2) two side slope upper berths, establishes weather strip (12).
8. vertical ventilating shaft Double door type explosion protection system as claimed in claim 7, it is characterized in that, described supporting traverse (7) is established weather strip (12) with the two side slope upper berths that door body (3) contacts, the domatic angle of supporting traverse (7) equals the domatic angle of gable body, and the bottom of supporting traverse (7) is wedge shape.
9. vertical ventilating shaft Double door type explosion protection system as claimed in claim 8, is characterized in that, described door body (3) is comprised of door body framework and door-plate, and door-plate is fixed on a body framework with welding, mode bonding or riveted joint, and door-plate is individual layer, bilayer or multilayer.
10. vertical ventilating shaft Double door type explosion protection system as claimed in claim 9, is characterized in that, described pulley yoke (8) arranges 4 groups altogether, is fixed with bolts respectively in the crossbeam top of buffering framework (4) corner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272037.XA CN104074544B (en) | 2014-06-18 | 2014-06-18 | Vertical ventilating shaft Double door type explosion protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272037.XA CN104074544B (en) | 2014-06-18 | 2014-06-18 | Vertical ventilating shaft Double door type explosion protection system |
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| CN104074544A true CN104074544A (en) | 2014-10-01 |
| CN104074544B CN104074544B (en) | 2017-03-29 |
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| CN201410272037.XA Active CN104074544B (en) | 2014-06-18 | 2014-06-18 | Vertical ventilating shaft Double door type explosion protection system |
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| CN104502208A (en) * | 2014-11-25 | 2015-04-08 | 徐州工程学院 | Explosion venting door experiment and testing equipment |
| CN110500135A (en) * | 2019-08-15 | 2019-11-26 | 国家电网有限公司 | A kind of tunnel entrance wind shielding structure and its construction method |
| CN110671027A (en) * | 2019-09-27 | 2020-01-10 | 河南理工大学 | Energy intercepting type mine explosion wave reduction device |
| CN111749732A (en) * | 2020-07-03 | 2020-10-09 | 河南理工大学 | Main and standby coal mine air shaft explosion door system |
| CN112177224A (en) * | 2020-11-11 | 2021-01-05 | 陈琇 | Explosion-proof factory building pressure release equipment |
| CN112901242A (en) * | 2021-03-13 | 2021-06-04 | 河南理工大学 | A supplementary explosion-proof door system for colliery air shaft wind tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110500135A (en) * | 2019-08-15 | 2019-11-26 | 国家电网有限公司 | A kind of tunnel entrance wind shielding structure and its construction method |
| CN110671027A (en) * | 2019-09-27 | 2020-01-10 | 河南理工大学 | Energy intercepting type mine explosion wave reduction device |
| CN111749732A (en) * | 2020-07-03 | 2020-10-09 | 河南理工大学 | Main and standby coal mine air shaft explosion door system |
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| CN112177224A (en) * | 2020-11-11 | 2021-01-05 | 陈琇 | Explosion-proof factory building pressure release equipment |
| CN112177224B (en) * | 2020-11-11 | 2022-05-03 | 陈琇 | Explosion-proof factory building pressure release equipment |
| CN112901242A (en) * | 2021-03-13 | 2021-06-04 | 河南理工大学 | A supplementary explosion-proof door system for colliery air shaft wind tunnel |
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|---|---|
| CN104074544B (en) | 2017-03-29 |
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