CN108005705B - Anti-suction flat high-strength negative pressure air duct system and construction method - Google Patents
Anti-suction flat high-strength negative pressure air duct system and construction method Download PDFInfo
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- CN108005705B CN108005705B CN201711480318.4A CN201711480318A CN108005705B CN 108005705 B CN108005705 B CN 108005705B CN 201711480318 A CN201711480318 A CN 201711480318A CN 108005705 B CN108005705 B CN 108005705B
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 82
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
Abstract
The invention discloses an anti-suction flat high-strength negative pressure air duct system and a construction method, wherein the negative pressure air duct system comprises: the air duct is provided with a barrel body made of base cloth materials, a plurality of frameworks and a plurality of hanging buckle parts; the hanging component is used for connecting each hanging buckle component, and the air duct is hung on the roadway to keep the shape formed by the air duct consistent with the shape of the roadway, namely, the air duct is formed with a straight line section and a bending section; the reaction component comprises a plurality of pull ropes, wherein one end of each pull rope is connected to the framework of the bending section of the wind barrel or/and the straight line section framework positioned at the airflow inflow end of the bending section, and the other end of each pull rope is connected to the roadway; the direction of each stay cord is inclined relative to the axis of the wind barrel and faces the incoming flow direction of the air flow. The negative pressure air duct system is simple in structure and convenient to install, can be used for preventing the roadway from being pulled out and flattened by the viscous force generated by the air flow in the downwind direction, namely pulling force, when the roadway encounters the working condition that the air duct is required to be bent, and can achieve higher strength and high reliability.
Description
Technical Field
The invention relates to an air duct system, in particular to a negative pressure air duct system for operations such as coal mines, tunnels, subway engineering and the like and a construction method.
Background
The wind cylinder is a pipeline for guiding wind flow to flow along a certain direction and is used for a coal mine, a tunnel, subway engineering and a flexible pipeline for guiding the wind flow to flow along a certain direction underground locally. The air duct is divided into a positive pressure air duct and a negative pressure air duct according to the pressure difference between the inside and the outside of the air duct cylinder body; the positive pressure air duct is an air duct with the atmospheric pressure in the air duct being higher than the atmospheric pressure outside the air duct when the air duct works, and is generally used for press-in guiding ventilation; the negative pressure air duct means that when the air duct works, the atmospheric pressure in the air duct is lower than the atmospheric pressure in the air duct, and the negative pressure air duct is generally used for extraction type guiding ventilation.
The current negative pressure air duct system comprises a cylinder body and a fan connected with the cylinder body, wherein a plurality of metal frameworks are arranged outside the outer surface of the cylinder body, and the cylinder body is fixed on the top wall of a roadway through a retaining ring and an expansion bolt. However, if the existing negative pressure air duct is made of metal materials such as iron air duct, the weight of the negative pressure air duct is very heavy, and the negative pressure air duct is generally of a segmented structure, so that the negative pressure air duct is relatively troublesome to move and connect, is very difficult to install, and is relatively high in cost.
For the above-mentioned metal material dryer, the flexible material dryer has been adopted at the tunnel at present, weight has significantly reduced, simultaneously also be convenient for transport and installation, this dryer is because the structure that is flexible, the interval has the skeleton, be used for hanging the dryer, this negative pressure dryer, when using, its dryer inner wall can receive the pulling force from downwind direction wind (i.e. the dryer inner wall receives the stickness and rubs the longitudinal force that produces), when the dryer is in the horizontally straight state, the pulling force that its dryer inner wall received is offset by the force that the rigid structure of skeleton produced, therefore the job stabilization of its dryer can be very good, but because the condition is complicated in the pit, the unavoidable tunnel horizontal turn that appears, slope and even need the operating mode of turning in vertical plane, consequently, in the position that meets needs the turn, the pulling force that its wind dryer inner wall received can not be by the holding power direction of dryer skeleton is inconsistent, and can not offset each other, this negative pressure is because crooked, ventilation cross-sectional area reduces, the pressure increases, the dryer part of this position just is in "free state", easily produce and is pulled out and inhale flat phenomenon, and lead to implementing the convulsions.
Taking phi 800 negative pressure air duct as an example: when the air duct uses the low negative pressure goaf to pump negative pressure, the design and calculation are generally carried out at 2000-3000Pa according to the maximum value of 5000Pa, and the maximum pulling force value F=the cross section area of the air duct x the pressure of the air duct, namely:
f=0.4×0.4×3.14×5000=2512n, which is approximately equal to 256 kg.
The negative pressure wind cylinder can be damaged instantaneously by the tensile force value received by the wind cylinder.
Therefore, the phenomenon that the negative pressure air duct is easily pulled out and flattened by the pulling force generated by the downwind direction wind in the use process when the tunnel encounters the working condition requiring the air duct to bend is solved.
Disclosure of Invention
The invention aims to solve the technical problem that when a negative pressure air duct is installed in a roadway in the prior art, when the negative pressure air duct is required to be bent, the negative pressure air duct is easily pulled out by tension force generated by downwind direction wind in the use process to absorb flat, and provides a negative pressure air duct system with high anti-absorbing flat strength, high structural strength and convenient installation and disassembly, and simultaneously provides a construction method for conveniently installing and disassembling the high-strength negative pressure air duct system.
In order to achieve the above object, the present invention provides the following technical solutions:
an anti-suction high strength negative pressure air duct system, comprising:
the air duct comprises a cylinder body made of base cloth, a plurality of frameworks and a plurality of hanging buckle parts, wherein the frameworks and the hanging buckle parts are arranged on the cylinder body;
the hanging parts are used for connecting each hanging buckle part and hanging the air duct on a roadway, so that the shape formed by the air duct is consistent with the shape of the roadway, namely, the air duct is formed into a shape comprising a straight line section and a bending section;
the reaction component comprises a plurality of pull ropes, one end of each pull rope is connected to the framework of the bending section of the wind barrel or/and the straight-line section framework positioned at the airflow inflow end of the bending section, and the other end of each pull rope is connected to a roadway; the direction of each pull rope is inclined relative to the axis of the air duct and faces the incoming flow direction of the air flow.
The negative pressure air duct system comprises an air duct, a hanging part and a counterforce part, wherein the hanging part is connected to the air duct, and is used for hanging the air duct on a roadway; the counterforce component is connected to the air duct through a plurality of pull ropes, and the pull ropes are obliquely arranged along the axial direction of the air duct and are connected to the roadway towards the incoming flow direction of the air flow; according to the negative pressure air duct system, the counterforce component is hung on the air duct, after air flow is introduced into the air duct, when the air flow flows through the straight line section of the air duct, the viscosity force of the air flow is counteracted by the forces of all frameworks and hanging components on the air duct, the air duct cannot be extruded and deformed, and when the air flow flows through the bent section of the air duct, although the ventilation sectional area of the air duct of the bent section is reduced, the pressure is suddenly increased, the counterforce component is arranged on the air duct, and the pull rope of the counterforce component can provide counterforce to the bent section, which is opposite to the flow direction of the air flow, so that the viscosity force generated by the air flow in the bent section is counteracted, and the air duct of the bent section can be kept in the original state.
This negative pressure dryer system, simple structure, simple to operate can be to the tunnel when meetting the crooked operating mode of needs dryer, and the negative pressure dryer can not be pulled out by the stickness that downwind direction air current produced in the use and inhale flat phenomenon promptly, can reach higher intensity, and the reliability is good.
In addition, compared with the existing method that a hard structure such as a bent cylinder made of metal members is needed at the bent position of the roadway, the negative pressure air duct system provided by the invention has the advantages that the flexible cylinder can be suitable for the working condition of the bent roadway, and the adaptability is wide.
Preferably, one part of the pull ropes are connected to the framework of the bending section of the wind barrel, and the other part of the pull ropes are connected to the framework of the straight line section at the airflow inflow end of the bending section.
Preferably, one part of the pull ropes are connected to the top wall position of the roadway, and the other part of the pull ropes are connected to the side wall position of the roadway.
Preferably, each pull rope is provided with a tensioner, and the tensioner is used for tensioning after the pull rope is connected with the air duct and the roadway, so that the pull rope generates certain prestress, and the deformation of the air duct during use can be effectively reduced to maintain the shape of the air duct.
Preferably, the bending section of the air duct is provided with a tightening device for keeping the cylinder body of the bending section in a bending forming state, and the tightening device is convenient for keeping the air duct of the bending section in a bending forming state, so that the phenomenon that the shape of the air duct is enlarged and overlarge due to air flow change in the air duct is avoided, and the use is influenced.
Preferably, the tightening device comprises a steel wire rope connected with all frameworks of the bending section, one end of the steel wire rope is connected with the frameworks of the airflow inflow end of the bending section, the other end of the steel wire rope is connected with the frameworks of the airflow outflow end of the bending section, and a tensioner is connected between two ends of the steel wire rope.
Preferably, the dryer comprises a plurality of dryer units which are connected with each other, and connecting parts are arranged at two ends of each dryer unit and can be connected through a structure of a zipper so as to connect the plurality of dryer units to form an integral dryer.
Preferably, each framework is arranged on the inner side of the cylinder body, each framework passes through the hanging buckle part, and each framework and the hanging buckle part positioned on the inner side part of the cylinder body are covered with the layering cloth.
The invention also provides a construction method of the anti-suction flat high-strength negative pressure air duct system, which comprises the following steps:
step one, connection preparation, namely expanding an air duct in a roadway to form a to-be-installed form according to the shape of the roadway, wherein the to-be-installed form comprises a straight line section and a bent section;
step two, installing a hanging part and a counter-force part, installing the hanging part on the wind cylinder, and installing a plurality of stay ropes and tensioners of the counter-force part on the cylinder body of the bending section;
installing an air duct, and hanging the air duct on a roadway through the hanging component;
and step four, installing a counterforce component, and connecting all the pull ropes on a roadway, wherein the direction of each pull rope is obliquely arranged relative to the axis of the air duct and faces the incoming flow direction of the air flow.
According to the construction method of the negative pressure air duct system, an air duct is unfolded to be matched with the shape of a roadway, then a hanging part and a counterforce part are connected to the air duct, the hanging part is used for hanging the air duct on the roadway, the counterforce part is connected to the air duct through a plurality of pull ropes, the pull ropes are obliquely arranged along the axial direction of the air duct and are connected to the roadway towards the incoming flow direction of air flow, and finally the air duct is hung on the roadway and the counterforce part is tensioned; according to the negative pressure air duct system, the counterforce component is hung on the air duct, after air flow is introduced into the air duct, when the air flow flows through the straight line section of the air duct, the viscosity force of the air flow is counteracted by the forces of all frameworks and hanging components on the air duct, the air duct cannot be extruded and deformed, and when the air flow flows through the bent section of the air duct, although the ventilation sectional area of the air duct of the bent section is reduced, the pressure is suddenly increased, the counterforce component is arranged on the air duct, and the pull rope of the counterforce component can provide counterforce to the bent section, which is opposite to the flow direction of the air flow, so that the viscosity force generated by the air flow in the bent section is counteracted, and the air duct of the bent section can be kept in the original state. The construction method of the negative pressure air duct system is simple and convenient to operate, can be used for solving the problem that when a roadway encounters a working condition requiring air duct bending, the negative pressure air duct cannot be pulled out and flattened by the viscous force generated by air flow in the downwind direction, namely pulling force, in the use process, and is good in reliability.
Further preferably, when the bending section of the wind barrel is positioned in a horizontal turn of a roadway, a plurality of pull ropes are arranged on the outer side of the arc-shaped barrel of the bending section, and each pull rope is provided with a tensioner; the tightening device is arranged on the inner side of the arc-shaped cylinder body of the bending section, and comprises steel wire ropes connected to two ends of the bending section respectively, wherein the two steel wire ropes are connected to the roadway in a splayed shape and obliquely upwards, and a tensioner is arranged on each steel wire rope.
Further preferably, when the bent section of the wind barrel is positioned at a roadway slope turning, all pull ropes of the reaction component are connected to a framework of the barrel body positioned at a straight line section of the airflow inflow end of the bent section, and each pull rope is provided with a tensioner; the tightening device is arranged on the inner side of the arc-shaped cylinder body of the bending section, and comprises steel wire ropes connected to two ends of the bending section respectively, wherein the two steel wire ropes are connected to the roadway in a splayed shape and obliquely upwards, and a tensioner is arranged on each steel wire rope.
Further preferably, when the bent section of the wind barrel is positioned in a vertical turn of the roadway, the reaction component comprises two pull ropes, one ends of the two pull ropes are connected to the bottom of a framework at the airflow inflow end of the bent section, the other ends of the two pull ropes are connected to the roadway in a splayed shape, and a tensioner is arranged on each pull rope; the tightening device is arranged on the inner side of the arc-shaped barrel of the bending section and comprises a steel wire rope and a tensioner arranged on the steel wire rope, wherein the steel wire rope connects the frameworks of the bending section together, the steel wire rope is positioned on the inner side of the arc-shaped barrel of the bending section, and the hanging part is connected on the outer side of the arc-shaped barrel of the bending section.
Compared with the prior art, the invention has the beneficial effects that:
1. the negative pressure air duct system comprises an air duct, a hanging part and a counter-force part, wherein the hanging part is connected to the air duct, and the hanging part is used for hanging the air duct on a roadway; the counterforce component is connected to the air duct through a plurality of pull ropes, and the pull ropes are obliquely arranged along the axial direction of the air duct and are connected to the roadway towards the incoming flow direction of the air flow; according to the negative pressure air duct system, the counterforce component is hung on the air duct, after air flow is introduced into the air duct, when the air flow flows through the straight line section of the air duct, the viscosity force of the air flow is counteracted by the forces of all frameworks and hanging components on the air duct, the air duct cannot be extruded and deformed, and when the air flow flows through the bent section of the air duct, although the ventilation sectional area of the air duct of the bent section is reduced, the pressure is suddenly increased, the counterforce component is arranged on the air duct, and the pull rope of the counterforce component can provide counterforce to the bent section, which is opposite to the flow direction of the air flow, so that the viscosity force generated by the air flow in the bent section is counteracted, and the air duct of the bent section can be kept in the original state; the negative pressure air duct system is simple in structure and convenient to install, can be used for solving the problem that when a roadway encounters a working condition requiring air duct bending, the negative pressure air duct cannot be pulled out and flattened by viscous force generated by air flow in the downwind direction, namely pulling force, in the use process, and can achieve higher strength and good reliability;
2. according to the negative pressure air duct system, the tensioners are arranged on each stay cord, and are used for tensioning after the stay cords are connected with the air duct and the roadway, so that the stay cords generate certain prestress, the deformation of the air duct in use can be effectively reduced, and the shape of the air duct is maintained;
3. according to the negative pressure air duct system, the tightening device is arranged at the bending section of the air duct so as to keep the barrel of the bending section in a bending forming state, and the air duct of the bending section is convenient to keep in a bending forming state, so that the influence on use caused by the fact that the shape of the air duct is enlarged and oversized due to the change of air flow in the air duct is avoided;
4. according to the construction method of the negative pressure air duct system, the air duct is unfolded to be matched with the shape of the tunnel, and then the hanging part and the counterforce part are connected to the air duct, wherein the hanging part is used for hanging the air duct on the tunnel, the counterforce part is connected to the air duct through the plurality of pull ropes, the pull ropes are obliquely arranged along the axial direction of the air duct and are connected to the tunnel towards the incoming flow direction of air flow, and finally the air duct is hung on the tunnel, and the counterforce part is tensioned.
Description of the drawings:
FIG. 1 is a schematic diagram of a negative pressure air duct system according to the present invention;
FIG. 2 is a schematic view of the air duct of FIG. 1;
FIG. 3 is a schematic diagram of a wind turbine system installed in a roadway for horizontal turning in embodiment 3 of the present invention;
FIG. 4 is a schematic diagram of the wind turbine system according to embodiment 4 of the present invention installed in a roadway for a slope turn;
FIG. 5 is a schematic diagram of the wind turbine system according to embodiment 5 of the present invention installed in a roadway for vertical turning;
fig. 6 is a right side view of fig. 5.
The marks in the figure:
1. the air duct, 11, the cylinder body, 12, the framework, 13, the layering cloth, 14, the hanging buckle component, 15, the connecting component, 16, the straight line segment, 17, the bending segment, 171, the bending segment airflow inflow end, 172, the bending segment airflow outflow end, 2, the hanging component, 21, the bearing rope, 22, the anchor rod, 3, the counterforce component, 31, the pull rope, 32, the tensioner, 33, the steel wire rope, 34 and the fixing ring; 4. 5, iron wind cylinders, 6 and joints.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-2, an anti-suction high-strength negative pressure air duct system comprises:
the air duct 1 comprises a cylinder body 11 made of base cloth, a plurality of frameworks 12 and a plurality of hanging buckle parts 14 which are arranged on the cylinder body 11;
a hanging part 2 for connecting each of the hanging buckle parts 14 and hanging the wind tunnel 1 on the roadway 4 so that the shape formed by the wind tunnel 1 is consistent with the shape of the roadway 4, namely, the wind tunnel 1 is formed into a shape comprising a straight line section 16 and a curved section 17;
the reaction component 3 comprises a plurality of pull ropes 31, wherein one end of each pull rope 31 is connected to the framework 12 of the bent section 17 of the wind tunnel 1 or/and connected to the framework 12 of the straight section 16 positioned at the air inflow end 171 of the bent section, and the other end of each pull rope 31 is connected to the roadway 4; the direction of each pull rope 31 is inclined relative to the axis of the wind barrel 1 and faces the incoming flow direction of the air flow.
The cylinder 11 is flexible base cloth, so that the whole air duct 1 can be contracted and unfolded, the framework 12 is arranged on the inner side of the cylinder 11, the hanging buckle component 14 comprises a buckle ring and a hook connected to the buckle ring, the buckle ring penetrates through the framework 12, and the framework 12 and the buckle ring positioned on the inner side part of the cylinder 11 are connected on the inner side of the cylinder 11 through the layering cloth 13. The suspension element 2 comprises a load-bearing rope 21 attached to the frame 12, the ends of the load-bearing rope 21 being secured to the roadway 4 by anchor rods 22. It should be noted that, this dryer 1 includes that a plurality of dryer unit interconnect forms, and the both ends of every dryer unit are equipped with connecting piece 15, and this connecting piece 15 can be through the structure realization connection of zip fastener to connect a plurality of dryer unit and form an holistic dryer 1, the curved section 17 and the straightway 16 of dryer 1 are not necessarily two dryer units that are mutually independent, also can be the curved section 17 of the curved formation in middle of a dryer unit, and the both ends are the straightway 16 of straight line structure formation, and is according to actual need and decide.
Some of the pull cords 31 of the reaction member 3 are connected to the frame 12 of the bent section 17 of the duct 1, and the other pull cord 31 is connected to the frame 12 of the straight section 16 at the air inflow end 171 of the bent section. When the pull rope is installed, one part of the pull rope 31 is connected to the top wall of the roadway 4, and the other part of the pull rope 31 is connected to the side wall of the roadway 4 according to actual needs. In addition, each pull rope 31 is provided with a tensioner 32, and the tensioner 32 is used for tensioning the pull ropes 31 through the tensioner 32 after the pull ropes 31 are connected with the air duct 1 and the roadway 4, so that the pull ropes 31 generate certain prestress, and the deformation of the air duct 1 during use can be effectively reduced, so that the shape of the air duct 1 is maintained.
The bending section 17 of the air duct 1 is also provided with a tightening device for keeping the cylinder 11 of the bending section 17 in a bending forming state, and the tightening device is convenient for keeping the air duct 1 of the bending section 17 in a bending forming state, so that the phenomenon that the shape of the air duct 1 is enlarged and overlarge due to air flow change in the air duct 1 is avoided, and the use is influenced. Specifically, the tightening device includes a wire rope 33 connecting all the frames 12 of the bending section 17, one end of the wire rope 33 is connected to the frame 12 of the airflow inflow end 171 of the bending section, the other end is connected to the frame 12 of the airflow outflow end of the bending section, and a tensioner 32 is connected between both ends of the wire rope 33.
The negative pressure air duct system comprises an air duct 1, a hanging part 2 and a counterforce part 3 which are connected to the air duct 1, wherein the hanging part 2 is used for hanging the air duct 1 on a roadway 4, and the air duct 1 is in a shape which is matched with the roadway 4 with a bent shape, so that the negative pressure air duct system comprises a straight line section 16 and a bent section 17; the counterforce component 3 is connected to the air duct 1 through a plurality of pull ropes 31, and the pull ropes 31 are obliquely arranged along the axial direction of the air duct 1 and are connected to the roadway 4 towards the incoming flow direction of the air flow; according to the negative pressure air duct system disclosed by the invention, the counter-force component 3 is hung on the air duct 1, after air flow is introduced into the air duct 1, when the air flow flows through the straight line section 16 of the air duct 1, the viscosity force of the air flow is counteracted by the forces of the frameworks 12 and the hanging components 2 on the air duct 11, the air duct 1 cannot be extruded and deformed, and when the air flow flows through the bent section 17 of the air duct 1, the ventilation cross section area of the air duct 1 of the bent section 17 is reduced, the pressure is suddenly increased, but due to the counter-force component 3 arranged on the air duct 1, the stay cord 31 of the counter-force component 3 can provide counter force to the air flow direction on the bent section 17 so as to counteract the viscosity force generated by the air flow on the bent section 17, so that the air duct 11 of the bent section 17 can be kept in the original state. Compared with the existing method that a hard structure such as a bent cylinder 11 made of metal members is needed at the bent position of the roadway 4, the negative pressure air duct system provided by the invention has the advantages that the flexible cylinder 11 can be suitable for the working condition of the bent roadway 4, and the adaptability is wide.
This negative pressure dryer system, simple structure, simple to operate can be to tunnel 4 when meetting the crooked operating mode of needs dryer 1, and negative pressure dryer 1 can not be by the phenomenon of the cohesive force that the downwind direction air current produced, i.e. pulling force pull out and inhale flat in the use, can reach higher intensity, if this dryer 1 bears negative pressure value can reach 7000Pa above inside and outside pressure difference, and the reliability is good.
Example 2
As shown in fig. 1-2, embodiment 2 provides a construction method of an anti-suction flat high-strength negative pressure air duct system, which comprises the following steps:
step one, connection preparation, namely expanding the air duct 1 in the roadway 4 according to the shape of the roadway 4 to form a to-be-installed form, wherein the form comprises a straight line section 16 and a bent section 17;
step two, installing the hanging part 2 and the counterforce part 3, installing the hanging part 2 on the wind barrel 1, and installing a plurality of pull ropes 31 and tensioners 32 of the counterforce part 3 on the barrel 11 of the bending section 17;
step three, installing the air duct 1, and hanging the air duct 1 on a roadway 4 through the hanging part 2;
and step four, installing a counterforce component 3, and connecting all the pull ropes 31 to the roadway 4, wherein the direction of each pull rope 31 is inclined relative to the axis of the air duct 1 and faces the incoming flow direction of the air flow.
According to the construction method of the negative pressure air duct system, firstly, an air duct 1 is unfolded to be matched with the shape of a roadway 4, then, a hanging part 2 and a counterforce part 3 are connected to the air duct 1, wherein the hanging part 2 is used for hanging the air duct 1 on the roadway 4, the counterforce part 3 is connected to the air duct 1 through a plurality of pull ropes 31, the pull ropes 31 are obliquely arranged along the axial direction of the air duct 1 and are connected to the roadway 4 towards the incoming flow direction of air flow, and finally, the air duct 1 is hung on the roadway 4, and the counterforce part 3 is tensioned.
According to the negative pressure air duct system disclosed by the invention, the counter-force component 3 is hung on the air duct 1, after air flow is introduced into the air duct 1, when the air flow flows through the straight line section 16 of the air duct 1, the viscosity force of the air flow is counteracted by the forces of the frameworks 12 and the hanging components 2 on the air duct 11, the air duct 1 cannot be extruded and deformed, and when the air flow flows through the bent section 17 of the air duct 1, the ventilation cross section area of the air duct 1 of the bent section 17 is reduced, the pressure is suddenly increased, but due to the counter-force component 3 arranged on the air duct 1, the stay cord 31 of the counter-force component 3 can provide counter force to the air flow direction on the bent section 17 so as to counteract the viscosity force generated by the air flow on the bent section 17, so that the air duct 11 of the bent section 17 can be kept in the original state. The construction method of the negative pressure air duct system is simple and convenient to operate, can be used for solving the problem that the phenomenon of pulling and flattening caused by the viscous force generated by the air flow in the downwind direction, namely pulling force, of the negative pressure air duct 1 in the use process can not be solved when the roadway 4 meets the working condition that the air duct 1 is required to be bent, and is good in reliability.
Example 3
As shown in fig. 3, this embodiment 3 discloses a suction-resistant high-strength negative pressure air duct 1 for installing in a tunnel 4 in a horizontal turning situation:
specifically, in the case of the installation, referring to the case of embodiment 2, in particular, a plurality of pull ropes 31 are required to be installed outside the arc-shaped cylinder 11 of the bending section 17, and a tensioner 32 is provided on each pull rope 31; the tightening device is arranged on the inner side of the arc-shaped cylinder 11 of the bending section 17, and comprises steel wire ropes 33 respectively connected to two ends of the bending section 17, wherein the two steel wire ropes 33 are connected to the roadway 4 obliquely upwards in a splayed shape, and a tensioner 32 is arranged on each steel wire rope 33.
The construction method and the steps are as follows:
the first step: hanging the hanging buckle part 14 of the negative pressure air duct 1 on the anchor rod 22 embedded on the top wall of the roadway 4 requires: the hanging needs to be straight, and the bearing rope 21 of each hanging buckle part 14 on the wind drum 1 needs to be hung;
and a second step of: one end of a pull rope 31 is fixed on the outer side of the arc-shaped cylinder 11 of the bending section 17, the other end of the pull rope is fixed on the side wall of the roadway 4, the pull rope 31 is obliquely arranged and faces the direction opposite to the wind flow direction so as to offset the suction force brought by the wind flow viscosity, and the pull rope is tightened by a steel wire rope 33 tightener;
and a third step of: the wire ropes 33 at the two ends of the bending section 17 are connected to the roadway 4 obliquely upwards in a splayed shape through the two wire ropes 33, and each wire rope 33 is provided with a tensioner 32 and fixed on the roadway 4.
Example 4
As shown in fig. 4, embodiment 4 discloses a suction-resistant high-strength negative pressure air duct 1 for installation in a roadway 4 in a slope turning situation, and the construction method and steps are adopted as follows:
the first step: all the pull ropes 31 of the reaction member 3 are connected to the framework 12 of the cylinder 11 of the straight line section 16 positioned at the air inflow end 171 of the bending section, and a tensioner 32 is arranged on each pull rope 31;
and a second step of: the tightening device is arranged on the inner side of the arc-shaped cylinder 11 of the bending section 17, wherein the tightening device comprises steel wire ropes 33 respectively connected to two ends of the bending section 17, the two steel wire ropes 33 are connected to the roadway 4 in a splayed shape obliquely upwards, and a tensioner 32 is arranged on each steel wire rope 33 and is fixed on the roadway 4.
Example 5
As shown in fig. 5-6, embodiment 5 discloses a suction-resistant high-strength negative pressure air duct 1 for installing in a tunnel 4 in a vertical turning condition, wherein the negative pressure air duct 1 needs to be connected with an iron air duct 5 positioned in the tunnel 4 in a downward bending manner, and the iron air duct 5 is provided with a joint 6, and the following construction method and steps are adopted during construction:
the first step: the air flow outlet end 172 of the bending section of the air duct 1 is connected to the joint 6 of the iron air duct 5, and the fixing ring 34 is sleeved outside for fixing;
and a second step of: the wind tunnel 1 is hung on a tunnel 4 through a hanging part 2, and the hanging part 2 is connected to the outer side of an arc-shaped cylinder 11 of a bending section 17;
and a third step of: the method comprises the steps that a reaction component 3 is connected to a wind barrel 1, wherein a tightening device of the reaction component 3 is firstly installed, specifically, a tightening device is installed on the inner side of an arc-shaped barrel 11 of a bending section 17, the tightening device comprises a steel wire rope 33 and a tensioner 32 arranged on the steel wire rope 33, the steel wire rope 33 connects a framework 12 of the bending section 17 together, and the steel wire rope 33 is located on the inner side of the arc-shaped barrel 11 of the bending section 17;
fourth step: one end of two pull ropes 31 of the reaction component 3 is connected to the bottom of a framework 12 of a bent section airflow inflow end 171, the other ends of the two pull ropes 31 are connected to a roadway 4 in a splayed shape, and a tensioner 32 is arranged on each pull rope 31;
fifth step: and tensioning the tensioner 32 on the pull rope 31 and the steel wire rope 33 to complete the suspension of the negative pressure air duct 1.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be covered by the scope of the appended claims.
Claims (10)
1. An anti-suction high-strength negative pressure air duct system, comprising:
the air duct (1) comprises a cylinder body (11) made of base cloth, a plurality of frameworks (12) and a plurality of hanging buckle parts (14) which are arranged on the cylinder body (11);
a hanging part (2) for connecting each hanging buckle part (14) and hanging the air duct (1) on the roadway (4) so that the shape formed by the air duct (1) is consistent with the shape of the roadway (4), namely, the air duct (1) is formed into a shape comprising a straight line section (16) and a bending section (17);
the counterforce component (3) comprises a plurality of pull ropes (31), wherein one end of each pull rope (31) is connected to a framework (12) of a bending section (17) of the wind barrel (1) or/and connected to a framework (12) of a straight line section (16) positioned at an airflow inflow end (171) of the bending section, and the other end of each pull rope is connected to a roadway (4); the direction of each stay cord (31) is inclined relative to the axis of the air duct (1) and faces the incoming flow direction of the air flow.
2. An anti-suction high-strength negative pressure air duct system according to claim 1, characterized in that one part of the pull ropes (31) in all the pull ropes (31) is connected to the framework (12) of the bending section (17) of the air duct (1), and the other part of the pull ropes (31) is connected to the framework (12) of the straight line section (16) at the air inflow end of the bending section (17).
3. An anti-suction high-strength negative pressure air duct system according to claim 1, characterized in that a tensioner (32) is arranged on each pull rope (31).
4. A suction-resistant high-strength negative pressure air duct system according to claim 1, characterized in that the curved section (17) of the air duct (1) is provided with tightening means to keep the barrel (11) of the curved section (17) curved.
5. The suction-resistant high-strength negative pressure air duct system according to claim 4, wherein the tightening device comprises a steel wire rope (33) for connecting all frameworks (12) of the bending section (17), one end of the steel wire rope (33) is connected to the frameworks (12) of the airflow inflow end (171) of the bending section, the other end of the steel wire rope is connected to the frameworks (12) of the airflow outflow end (172) of the bending section, and a tensioner (32) is connected between two ends of the steel wire rope (33).
6. An anti-suction high strength negative pressure air duct system according to any of claims 1-5, characterized in that the air duct (1) comprises a plurality of air duct units connected to each other.
7. The construction method of the anti-suction flat high-strength negative pressure air duct system is characterized by comprising the following steps of:
step one, connection preparation, wherein an air duct (1) is unfolded in a roadway (4) according to the shape of the roadway (4) to form a to-be-installed form, and the to-be-installed form comprises a straight line section (16) and a bending section (17);
step two, installing a hanging part (2) and a counter-force part (3), installing the hanging part (2) on the wind barrel (1), and installing a plurality of pull ropes (31) and tensioners (32) of the counter-force part (3) on the barrel of the bending section (17);
installing the air duct (1), and hanging the air duct (1) on a roadway (4) through the hanging component (2);
and step four, installing a counterforce component (3), and connecting all the pull ropes (31) on the roadway (4), wherein the direction of each pull rope (31) is obliquely arranged relative to the axis of the air duct (1) and faces the incoming flow direction of the air flow.
8. The construction method of the anti-suction high-strength negative pressure air duct system according to claim 7, wherein when the bending section (17) of the air duct (1) is positioned in a horizontal turn of a roadway (4), a plurality of pull ropes (31) are arranged on the outer side of the arc-shaped cylinder (11) of the bending section (17), and a tensioner (32) is arranged on each pull rope (31); the tightening device is arranged on the inner side of the arc-shaped cylinder body (11) of the bending section (17), and comprises steel wire ropes (33) which are respectively connected to the two ends of the bending section (17), wherein the two steel wire ropes (33) are obliquely upwards connected to the roadway (4) in a splayed shape, and a tensioner (32) is arranged on each steel wire rope (33).
9. The construction method of the anti-suction high-strength negative pressure air duct system according to claim 7, wherein when a bent section (17) of an air duct (1) is positioned in a slope turning of a roadway (4), all pull ropes (31) of the reaction component (3) are connected to a framework (12) of a cylinder body of a straight line section (16) positioned at an air inflow end (171) of the bent section, and a tensioner (32) is arranged on each pull rope (31); the tightening device is arranged on the inner side of the arc-shaped cylinder body (11) of the bending section (17), and comprises steel wire ropes (33) which are respectively connected to the two ends of the bending section (17), wherein the two steel wire ropes (33) are obliquely upwards connected to the roadway (4) in a splayed shape, and a tensioner (32) is arranged on each steel wire rope (33).
10. The construction method of the anti-suction high-strength negative pressure air duct system according to claim 7, wherein when the bending section (17) of the air duct (1) is positioned in a vertical turn of a roadway (4), the reaction component (3) comprises two pull ropes (31), one ends of the two pull ropes (31) are connected to the bottom of a framework (12) of an airflow inflow end (171) of the bending section, the other ends of the two pull ropes (31) are connected to the roadway (4) in a splayed shape, and a tensioner (32) is arranged on each pull rope (31); the tightening device is arranged on the inner side of the arc-shaped barrel (11) of the bending section (17) and comprises a steel wire rope (33) and a tensioner (32) arranged on the steel wire rope (33), wherein the steel wire rope (33) is used for connecting the frameworks (12) of the bending section (17) together, the steel wire rope (33) is positioned on the inner side of the arc-shaped barrel (11) of the bending section (17), and the hanging component (2) is connected on the outer side of the arc-shaped barrel (11) of the bending section (17).
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| CN201711480318.4A CN108005705B (en) | 2017-12-29 | 2017-12-29 | Anti-suction flat high-strength negative pressure air duct system and construction method |
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| CN201711480318.4A CN108005705B (en) | 2017-12-29 | 2017-12-29 | Anti-suction flat high-strength negative pressure air duct system and construction method |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2841498A1 (en) * | 1978-09-23 | 1980-04-03 | Ferroplast Gmbh | Pneumatic air conditioning ducting folding pipe sections - have seamed adjustable coupling ring with tangential clamp, inside sealing sleeve |
| AU2005201084A1 (en) * | 2005-03-11 | 2006-09-28 | Cleland, Glen | Pipe |
| JP2007308902A (en) * | 2006-05-16 | 2007-11-29 | Kajima Corp | Ventilating device in tunnel |
| WO2009145698A1 (en) * | 2008-05-31 | 2009-12-03 | Educt Ab | Duct means for an air flow or a gas flow and a method for manufacturing, handling and mounting said duct means |
| CN201747395U (en) * | 2010-08-30 | 2011-02-16 | 泰州海本蓬网有限公司 | Air duct |
| KR20130135428A (en) * | 2012-06-01 | 2013-12-11 | 이성록 | Ventilation apparatus and method for underground tunnel |
| AU2012213954A1 (en) * | 2012-08-15 | 2014-03-06 | Peter Michael John Simond | Electrically conductive fibre reinforced plastic articles |
| KR20140050313A (en) * | 2012-10-19 | 2014-04-29 | 우송대학교 산학협력단 | Structure and construction method of prefabricate tunne bell mouth |
| CN104420880A (en) * | 2013-08-27 | 2015-03-18 | 成都众成新型复合材料有限公司 | Negative-pressure air drum system and mounting method thereof |
| JP2015161445A (en) * | 2014-02-27 | 2015-09-07 | 株式会社アクティオ | telescopic duct |
| CN105735992A (en) * | 2016-04-20 | 2016-07-06 | 孟钧 | Air duct recycling and stretching device |
| CN105927262A (en) * | 2016-05-18 | 2016-09-07 | 中国神华能源股份有限公司 | Negative-pressure air cylinder and driving face |
| CN205638524U (en) * | 2016-04-20 | 2016-10-12 | 孟钧 | Negative pressure wind tunnel's tensile recoverer |
| CN205778979U (en) * | 2016-06-02 | 2016-12-07 | 盐城市吉平人造革有限公司 | A kind of colliery coated cloth negative pressure air duct |
| CN207686752U (en) * | 2017-12-29 | 2018-08-03 | 成都众成新型复合材料有限公司 | A kind of anti-flat high intensity negative pressure air duct system of suction |
-
2017
- 2017-12-29 CN CN201711480318.4A patent/CN108005705B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2841498A1 (en) * | 1978-09-23 | 1980-04-03 | Ferroplast Gmbh | Pneumatic air conditioning ducting folding pipe sections - have seamed adjustable coupling ring with tangential clamp, inside sealing sleeve |
| AU2005201084A1 (en) * | 2005-03-11 | 2006-09-28 | Cleland, Glen | Pipe |
| JP2007308902A (en) * | 2006-05-16 | 2007-11-29 | Kajima Corp | Ventilating device in tunnel |
| WO2009145698A1 (en) * | 2008-05-31 | 2009-12-03 | Educt Ab | Duct means for an air flow or a gas flow and a method for manufacturing, handling and mounting said duct means |
| CN201747395U (en) * | 2010-08-30 | 2011-02-16 | 泰州海本蓬网有限公司 | Air duct |
| KR20130135428A (en) * | 2012-06-01 | 2013-12-11 | 이성록 | Ventilation apparatus and method for underground tunnel |
| AU2012213954A1 (en) * | 2012-08-15 | 2014-03-06 | Peter Michael John Simond | Electrically conductive fibre reinforced plastic articles |
| KR20140050313A (en) * | 2012-10-19 | 2014-04-29 | 우송대학교 산학협력단 | Structure and construction method of prefabricate tunne bell mouth |
| CN104420880A (en) * | 2013-08-27 | 2015-03-18 | 成都众成新型复合材料有限公司 | Negative-pressure air drum system and mounting method thereof |
| JP2015161445A (en) * | 2014-02-27 | 2015-09-07 | 株式会社アクティオ | telescopic duct |
| CN105735992A (en) * | 2016-04-20 | 2016-07-06 | 孟钧 | Air duct recycling and stretching device |
| CN205638524U (en) * | 2016-04-20 | 2016-10-12 | 孟钧 | Negative pressure wind tunnel's tensile recoverer |
| CN105927262A (en) * | 2016-05-18 | 2016-09-07 | 中国神华能源股份有限公司 | Negative-pressure air cylinder and driving face |
| CN205778979U (en) * | 2016-06-02 | 2016-12-07 | 盐城市吉平人造革有限公司 | A kind of colliery coated cloth negative pressure air duct |
| CN207686752U (en) * | 2017-12-29 | 2018-08-03 | 成都众成新型复合材料有限公司 | A kind of anti-flat high intensity negative pressure air duct system of suction |
Non-Patent Citations (3)
| Title |
|---|
| 一种新型矿用硬质风筒的研究与应用;李长喜;魏成会;王伟;;煤矿现代化(第01期);全文 * |
| 我国煤矿用风筒产品概述;朱正宪, 孔令刚, 李万鹏;矿业安全与环保(第02期);全文 * |
| 负压风筒在掘进大转角局部通风巷道中的应用;何平均;陈忠;;煤炭技术(第03期);全文 * |
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