CN108005705A - One kind is anti-to inhale flat high intensity negative pressure air duct system and construction method - Google Patents
One kind is anti-to inhale flat high intensity negative pressure air duct system and construction method Download PDFInfo
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- CN108005705A CN108005705A CN201711480318.4A CN201711480318A CN108005705A CN 108005705 A CN108005705 A CN 108005705A CN 201711480318 A CN201711480318 A CN 201711480318A CN 108005705 A CN108005705 A CN 108005705A
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 122
- 239000000725 suspension Substances 0.000 claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
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- 210000000988 bone and bone Anatomy 0.000 claims description 3
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- 208000006011 Stroke Diseases 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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 OR ROCK 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
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- Mining & Mineral Resources (AREA)
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Abstract
The invention discloses the flat high intensity negative pressure air duct system of the anti-suction of one kind and construction method, wherein negative pressure air duct system to include：Air duct, its cylinder with base fabric material, several skeletons and several withhold component；For connecting each suspension parts for withholding component, the shape that air duct is suspended on to the shape for being formed air duct on tunnel and tunnel is consistent, i.e., air duct is formed with straightway and bending section；Counter-force component, including several drawstrings, flow on the straightway skeleton at end, the other end is connected on tunnel wherein one end of each drawstring is connected on the skeleton of the bending section of air duct or/and is connected to positioned at bending section air-flow；The direction of each drawstring is obliquely installed with respect to the axis of air duct and towards the direction of flow of air-flow.The negative pressure air duct system structure is simple, easy for installation, can be directed to tunnel run into need air duct curved operating mode when, will not be drawn in use by the stickiness power i.e. pulling force that downwind air-flow produces it is bad inhale flat, higher intensity can be reached, reliability is high.
Description
Technical field
The present invention relates to a kind of air duct system, more particularly to a kind of negative pressure for operations such as colliery, tunnel, subway engineerings
Air duct system and construction method.
Background technology
Air duct refers to guide the distinguished and admirable pipeline flowed along certain orientation, for colliery, tunnel, subway engineering, underground office
The distinguished and admirable flexible duct flowed along certain orientation of portion's guiding.According to the pressure differential inside and outside air duct cylinder, air duct is divided into positive pressure wind
Cylinder and negative pressure air duct；When positive pressure wind pipe refers to air duct work, the atmospheric pressure in cylinder is higher than the air duct of the outer atmospheric pressure of cylinder,
Forced be oriented to is generally used for divulge information；When negative pressure air duct then refers to air duct work, the atmospheric pressure in cylinder is less than in cylinder
Atmospheric pressure, is generally used for pull-out type and is oriented to ventilation.
Current negative pressure air duct system, including cylinder, the wind turbine of connector drum, the barrel outer surface are externally provided with several gold
Belong to skeleton, tunnel roof is fixed on by retaining ring and expansion bolt on cylinder.But if existing negative pressure air duct is using metal
Material such as irony air duct, then its weight can be very heavy, plus generally segmental structure is used, in movement and connects also number
Tired, installation is extremely difficult, and cost is also higher.
For above-mentioned metal material air duct, the material air duct of flexibility is employed in tunnel at present, is greatly reduced
Weight, while also allow for transporting and install, for the air duct due to being flexible structure, interval has a skeleton, for air duct into
Row suspension, when in use, its air duct inner wall can be subject to the pulling force from downwind wind, and (i.e. air duct inner wall is subject to the negative pressure air duct
Viscous friction and the longitudinal force produced), when air duct is in horizontal straightened condition, the pulling force suffered by its air duct inner wall is by bone
The power that the rigid structure of frame produces is offset, therefore the job stability of its air duct can be very good, but since conditions down-hole is answered
It is miscellaneous, inevitably there is tunnel flat bank, slope and the operating mode turned even is needed in perpendicular, therefore, running into needs
The position of turning, the pulling force suffered by its wind air duct inner wall can not be inconsistent by the support force direction of air duct skeleton, can not
Cancel out each other, while the negative pressure air duct, due to bending, ventilation-sectional area is reduced, pressure increases suddenly, and the air duct part of the position is just located
In " free state ", easily produce and drawn the flat phenomenon of bad suction, and lead to not implement exhausting work.
By taking 800 negative pressure air ducts of Φ as an example：When air duct is with lower negative pressure goaf negative pressure of suction, generally in 2000-3000Pa, press
It is designed and calculates according to maximum 5000Pa, it cuts along the maximum pull value F=air ducts that wind direction wind turbine applies air duct
Area × wind turbine pressure, i.e.,：
F=0.4 × 0.4 × 3.14 × 5000=2512N, are approximately equal to 256 kilograms.
The value of thrust that the air duct is subject to can destroy negative pressure air duct moment.
Therefore, letter it is to be solved it is above-mentioned for tunnel run into need air duct curved operating mode when, negative pressure air duct was using
The pulling force easily produced in journey by downwind wind draws the flat phenomenon of bad suction.
The content of the invention
During it is an object of the invention to overcome the negative pressure air duct in the presence of the prior art to be installed in tunnel, needed running into
Air duct bent portion is wanted, the pulling force which is easily produced by downwind wind in use draws the flat technology of bad suction
Problem, and a kind of anti-flat high intensity negative pressure air duct system of suction is provided, the negative pressure air duct system that structural strength is high, easy for assemble or unload
System, while additionally provide a kind of construction method for being easily installed, dismantling high intensity negative pressure air duct system.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
A kind of anti-flat high intensity negative pressure air duct system of suction, including：
Air duct, includes the cylinder of base fabric material, several skeletons on the cylinder withhold component with several；
Suspension parts, for connect it is each it is described withhold component, and the air duct is suspended on tunnel, makes the air duct
The shape of formation and the shape in tunnel are consistent, i.e., described air duct forms the shape for including straightway and bending section；
Counter-force component, including several drawstrings, wherein one end of each drawstring is connected to the bending section of the air duct
Skeleton on or/and be connected to positioned at bending section air-flow flow into end straightway skeleton on, the other end is connected on tunnel；Each
The direction of the drawstring is obliquely installed with respect to the axis of air duct, and towards the direction of flow of air-flow.
The negative pressure air duct system, including air duct and the suspension parts, wherein the counter-force component, suspension parts that are connected on air duct
For air duct to be suspended on tunnel, due to the tunnel of the shape adaptation curved shape of air duct, straightway and curved can be included
Tune；And counter-force component is to be connected to by several drawstrings on air duct, and drawstring is set into simultaneously direction along air duct is axially inclined
The direction of flow of air-flow is connected on tunnel；Negative pressure air duct system of the present invention, by hanging counter-force component on air duct,
After air-flow can be passed through in air duct, when air-flow flows through the straightway of air duct, the stickiness power of the air-flow is by each bone on cylinder
The power of frame and suspension parts is offset, which will not be deformed, and when air-flow flows through the bending section of air duct, although this is curved
The air duct ventilation-sectional area of tune is reduced, and pressure increases suddenly, but since air duct is equipped with counter-force component, the drawstring of the counter-force component
The counter-force opposite with air flow direction can be provided bending section, to offset the stickiness power that air-flow is produced in the bending section, is made curved
The cylinder of tune can maintain the original state.
The negative pressure air duct system, simple in structure, easy for installation, can be directed to tunnel needs the curved operating mode of air duct running into
When, negative pressure air duct will not be drawn the flat phenomenon of bad suction, energy by the stickiness power i.e. pulling force that downwind air-flow produces in use
Enough reach higher intensity, good reliability.
In addition, needed compared to existing in tunnel bending position using bending cylinder of the hard structure as used hardware material
Cost that body is brought is higher, for installation inconvenience, and by using negative pressure air duct system of the present invention, i.e. flexible cylinder also can
Enough adapt to use under the operating mode of winding roadway, wide adaptability.
Preferably, in all drawstrings on the skeleton for the bending section that a part of drawstring is connected to the air duct, another portion
Divide drawstring to be connected to flow on the straightway skeleton at end positioned at bending section air-flow.
Preferably, a part of drawstring is connected to the roof position in tunnel, the connection of another part drawstring in all drawstrings
Sidewall locations in tunnel.
Preferably, each drawstring is equipped with stretcher, and stretcher is used to after drawstring connects air duct and tunnel, pass through
Stretcher can realize tensioning, drawstring is produced certain prestressing force, can effectively reduce the deflection that air duct produces when in use, with
Maintain the shape of air duct.
Preferably, the bending section of the air duct is equipped with so that the tightening device of the cylinder holding brake forming of bending section, is received
Tight device keeps the state of a brake forming easy to the air duct of bending section, and avoiding the air-flow in air duct from changing causes air duct shape
Become larger excessive, influence to use.
Preferably, the tightening device includes the steel wire rope of connection all skeletons of bending section, steel wire rope one end connection
Flowed into bending section air-flow on the skeleton at end, the other end is connected on the skeleton of bending section air-flow outflow end, the steel wire rope
Stretcher is connected between both ends.
Preferably, the air duct is connected with each other including several air duct units and forms, and the both ends of each air duct unit are equipped with
Connecting component, which can be realized by the structure of slide fastener and connected, several air duct units are connected to form one
Overall air duct.
Preferably, each skeleton is arranged on the inside of the cylinder, and each skeleton, which passes through, withholds component, Mei Gesuo
State skeleton and withhold component covered with press strip cloth positioned at the cylinder inboard portion.
Present invention also offers a kind of anti-construction method for inhaling flat high intensity negative pressure air duct system, comprise the following steps：
Step 1: connection prepares, air duct is unfolded to form formation to be installed in tunnel according to the shape in tunnel, including
Straightway and bending section；
Step 2: installation suspension parts and counter-force component, the installation suspension parts on air duct, and in the cylinder of bending section
Several drawstrings and stretcher of upper installation counter-force component；
Step 3: air duct, is suspended on tunnel by installation air duct by the suspension parts；
Step 4: installation counter-force component, all drawstrings are connected on tunnel, wherein the direction of each drawstring
Axis with respect to air duct is obliquely installed, and towards the direction of flow of air-flow.
The construction method of the negative pressure air duct system, first air duct is unfolded to form the form fit with tunnel, then in wind
Suspension parts and counter-force component are connected on cylinder, wherein suspension parts is used to air duct being suspended on tunnel, and counter-force component is logical
Cross several drawstrings to be connected on air duct, and drawstring is connected to along the axially inclined setting of air duct and towards the direction of flow of air-flow
On tunnel, air duct is suspended on tunnel by final realize, and by counter-force member tension；Negative pressure air duct system of the present invention,
By hanging counter-force component on air duct, after air-flow can be passed through in air duct, when air-flow flows through the straightway of air duct, the air-flow
Stickiness power by each skeleton and suspension parts on cylinder power offset, which will not be deformed, and work as air-flow stream
During bending section through air duct, although the air duct ventilation-sectional area of the bending section is reduced, pressure increases suddenly, since air duct is equipped with
Counter-force component, the drawstring of the counter-force component can provide bending section the counter-force opposite with air flow direction, exist to offset air-flow
The stickiness power that the bending section produces, enables the cylinder of bending section to maintain the original state.The construction method of the negative pressure air duct system, operation
It is simple and convenient, can be directed to tunnel run into need air duct curved operating mode when, negative pressure air duct in use will not be suitable
The stickiness power that wind direction air-flow produces, that is, pulling force draws the flat phenomenon of bad suction, good reliability.
It is further preferred that when the bending section of air duct is located at tunnel flat bank, in the external side of the arc tube of bending section
Several drawstrings are installed, each drawstring is equipped with stretcher；Tightening device, wherein institute are installed in side in the arc tube body of bending section
The steel wire rope that tightening device includes being connected to bending section both ends is stated, two steel wire ropes connect in the oblique top of splayed shape
It is connected on the tunnel, each steel wire rope is equipped with stretcher.
It is further preferred that when the bending section of air duct is located at tunnel slope and turns, all drawstrings of the counter-force component
It is connected on the skeleton of the cylinder for the straightway that end is flowed into positioned at bending section air-flow, each drawstring is equipped with stretcher；
Tightening device is installed in side in the arc tube body of bending section, wherein the tightening device includes the steel for being connected to bending section both ends
Cord, two steel wire ropes are connected on the tunnel in the oblique top of splayed shape, and each steel wire rope is equipped with stretcher.
It is further preferred that when the bending section of air duct is located at tunnel and vertically turns, the counter-force component includes two drawings
Rope, one end of two drawstrings connect the bending section air-flow and flow on the skeleton bottom at end, and the other end of two drawstrings forms eight
Word shape is connected on tunnel, and each drawstring is equipped with stretcher；The side installation tightening dress in the arc tube body of bending section
Put, the tightening device includes steel wire rope and the stretcher on steel wire rope, wherein the steel wire rope is by the skeleton of bending section
Link together, the steel wire rope is located at side in the arc tube body of bending section, and the suspension parts is connected to the arc of bending section
On the outside of cylinder.
Compared with prior art, beneficial effects of the present invention：
1st, a kind of negative pressure air duct system of the present invention, including air duct and be connected on air duct suspension parts, counter-force
Component, wherein suspension parts are used to air duct being suspended on tunnel, due to the tunnel of the shape adaptation curved shape of air duct,
It can include straightway and bending section；And counter-force component is to be connected to by several drawstrings on air duct, and by drawstring along air duct axis
To being obliquely installed and be connected to towards the direction of flow of air-flow on tunnel；Negative pressure air duct system of the present invention, by wind
Counter-force component is hung on cylinder, after air-flow can be passed through in air duct, when air-flow flows through the straightway of air duct, the stickiness power of the air-flow
Offset by the power of each skeleton and suspension parts on cylinder, which will not be deformed, and when air-flow flows through air duct
During bending section, although the air duct ventilation-sectional area of the bending section is reduced, pressure increases suddenly, since air duct is equipped with counter-force portion
Part, the drawstring of the counter-force component can provide bending section the counter-force opposite with air flow direction, to offset air-flow in the bending
The stickiness power that section produces, enables the cylinder of bending section to maintain the original state；The negative pressure air duct system, simple in structure, easy for installation, energy
Enough for tunnel run into need air duct curved operating mode when, negative pressure air duct will not be produced by downwind air-flow in use
Raw stickiness power, that is, pulling force draws the flat phenomenon of bad suction, can reach higher intensity, good reliability；
2nd, a kind of negative pressure air duct system of the present invention, is equipped with stretcher on each drawstring, and stretcher is used for when drawing
After rope connection air duct and tunnel, tensioning can be realized by stretcher, drawstring is produced certain prestressing force, can effectively reduce air duct
The deflection produced when in use, to maintain the shape of air duct；
3rd, a kind of negative pressure air duct system of the present invention, is equipped with the bending section of air duct so that the cylinder of bending section is kept
The tightening device of brake forming, tightening device keep the state of a brake forming easy to the air duct of bending section, avoid in air duct
Air-flow change cause air duct shape become larger it is excessive and influence use；
4th, the construction method of a kind of negative pressure air duct system of the present invention, first air duct is unfolded to form the shape with tunnel
Shape matches, and suspension parts and counter-force component are then connected on air duct, and wherein suspension parts is used to air duct being suspended on tunnel,
And counter-force component is to be connected to by several drawstrings on air duct, and by drawstring along the axially inclined setting of air duct and towards air-flow
Direction of flow is connected on tunnel, and air duct is suspended on tunnel by final realize, and by counter-force member tension, the construction method,
It is simple to operate, can be directed to tunnel run into need air duct curved operating mode when, negative pressure air duct in use will not
The stickiness power produced by downwind air-flow i.e. pulling force draws the flat phenomenon of bad suction, good reliability.
Brief description of the drawings：
Fig. 1 is a kind of structure diagram of negative pressure air duct system of the present invention；
Fig. 2 is the structure diagram of air duct in Fig. 1；
Fig. 3 is the situation schematic diagram that 3 apoplexy cartridge system of the embodiment of the present invention is installed on that tunnel is flat bank；
Fig. 4 is the situation schematic diagram that 4 apoplexy cartridge system of the embodiment of the present invention is installed on that tunnel is slope turning；
Fig. 5 is that 5 apoplexy cartridge system of the embodiment of the present invention installed in tunnel is the situation schematic diagram vertically turned；
Fig. 6 is the right view of Fig. 5.
Marked in figure：
1st, air duct, 11, cylinder, 12, skeleton, 13, press strip cloth, 14, withhold component, 15, connecting component, 16, straightway,
17th, bending section, 171, bending section air-flow flow into end, 172, bending section air-flow outflow end, 2, suspension parts, 21, head-rope, 22,
Anchor pole, 3, counter-force component, 31, drawstring, 32, stretcher, 33, steel wire rope, 34, retainer ring；4th, tunnel, 5, irony air duct, 6, connect
Head.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
As shown in Figs. 1-2, a kind of anti-flat high intensity negative pressure air duct system of suction, including：
Air duct 1, includes the cylinder 11 of base fabric material, several skeletons 12 on the cylinder 11 are withheld with several
Component 14；
Suspension parts 2, for connect it is each it is described withhold component 14, and the air duct 1 is suspended on tunnel 4, makes institute
The shape and the shape in tunnel 4 for stating the formation of air duct 1 are consistent, i.e., described air duct 1, which is formed, includes straightway 16 and bending section
17 shape；
Counter-force component 3, including several drawstrings 31, wherein one end of each drawstring 31 is connected to the air duct 1
On the skeleton 12 of bending section 17 or/and it is connected on 16 skeleton 12 of straightway at bending section air-flow inflow end 171, the other end
It is connected on tunnel 4；The direction of each drawstring 31 is obliquely installed with respect to the axis of air duct 1, and towards the incoming side of air-flow
To.
Above-mentioned cylinder 11 is flexible base fabric, whole air duct 1 is shunk and is unfolded, and skeleton 12 is arranged in cylinder 11
Side, withholding component 14 includes retaining ring and the hook that is connected on retaining ring, and retaining ring passes through skeleton 12, skeleton 12 and in cylinder 11
The retaining ring of side part is connected to the inner side of cylinder 11 by press strip cloth 13.The suspension parts 2 includes the head-rope being connected on skeleton 12
21, the end of the head-rope 21 is fixed on tunnel 4 by anchor pole 22.It should be noted that the air duct 1 includes several air ducts
Unit is connected with each other and forms, and the both ends of each air duct unit are equipped with connecting component 15, which can pass through slide fastener
Structure realizes connection, several air duct units are connected to the air duct 1 to form an entirety, the bending section 17 and straight line of air duct 1
Section 16 is not necessarily mutually independent two air duct units or an air duct unit bent intermediate forms bending section
17, the structure of both ends or straight line forms straightway 16, is decided according to the actual requirements.
A part of drawstring 31 is connected to the skeleton of the bending section 17 of air duct 1 in all drawstrings 31 of above-mentioned counter-force component 3
On 12, another part drawstring 31 is connected to be flowed on 16 skeleton 12 of straightway at end 171 positioned at bending section air-flow.When mounted,
According to actual needs, the roof position in tunnel 4 is connected in a portion drawstring 31, another part drawstring 31 is connected to tunnel
4 sidewall locations.In addition, each drawstring 31 is equipped with stretcher 32, stretcher 32 is used for when drawstring 31 connects air duct 1 and tunnel
After 4, tensioning can be realized by stretcher 32, drawstring 31 is produced certain prestressing force, can effectively reduced air duct 1 and produce when in use
Raw deflection, to maintain the shape of air duct 1.
The bending section 17 of the air duct 1 is additionally provided with so that the tightening device of the holding brake forming of cylinder 11 of bending section 17, is received
Tight device keeps the state of a brake forming easy to the air duct 1 of bending section 17, and avoiding the air-flow in air duct 1 from changing causes air duct
1 shape becomes larger excessive, influences to use.Specifically, tightening device includes the steel wire rope 33 of the connection all skeletons 12 of bending section 17, steel
33 one end of cord is connected to bending section air-flow and flows on the skeleton 12 at end 171, and the other end is connected to bending section air-flow outflow end
On skeleton 12, stretcher 32 is connected between the both ends of steel wire rope 33.
The negative pressure air duct system, including air duct 1 and the suspension parts 2, the counter-force component 3 that are connected on air duct 1, wherein hanging
Component 2 is used to air duct 1 being suspended on tunnel 4, due to the tunnel 4 of the shape adaptation curved shape of air duct 1, can include straight
Line segment 16 and bending section 17；And counter-force component 3 is to be connected to by several drawstrings 31 on air duct 1, and by drawstring 31 along air duct 1
It is axially inclined to set and be connected to towards the direction of flow of air-flow on tunnel 4；Negative pressure air duct system of the present invention, by
Counter-force component 3 is hung on air duct 1, after air-flow can be passed through in air duct 1, when air-flow flows through the straightway 16 of air duct 1, the air-flow
Stickiness power by the power of each skeleton 12 on cylinder 11 and suspension parts 2 offset, which will not be deformed, and work as
When air-flow flows through the bending section 17 of air duct 1, although 1 ventilation-sectional area of air duct of the bending section 17 is reduced, pressure increases suddenly, by
Counter-force component 3 is equipped with air duct 1, the drawstring 31 of the counter-force component 3 can be opposite with air flow direction to the offer of bending section 17
Counter-force, to offset the stickiness power that air-flow is produced in the bending section 17, enables the cylinder 11 of bending section 17 to maintain the original state.Compare
It is existing 4 bending position of tunnel need using the hard structure such as cost brought of bending cylinder 11 using hardware material compared with
For high, installation inconvenience, by using negative pressure air duct system of the present invention, i.e. flexible cylinder 11 also can adapt to bending lane
Used under the operating mode in road 4, wide adaptability.
The negative pressure air duct system, simple in structure, easy for installation, can be directed to tunnel 4 needs 1 curved work of air duct running into
During condition, negative pressure air duct 1 will not be drawn the flat phenomenon of bad suction by the stickiness power i.e. pulling force that downwind air-flow produces in use,
Higher intensity can be reached, can reach the inside and outside pressure difference of more than 7000Pa, reliability as the air duct 1 bears negative pressure value
It is good.
Embodiment 2
As shown in Figs. 1-2, the present embodiment 2 provides a kind of anti-construction method for inhaling flat high intensity negative pressure air duct system, bag
Include following steps：
Step 1: connection prepares, air duct 1 is unfolded to form formation to be installed in tunnel 4 according to the shape in tunnel 4,
Including straightway 16 and bending section 17；
Step 2: installation suspension parts 2 and counter-force component 3, the installation suspension parts 2 on air duct 1, and in bending section 17
Cylinder 11 on several drawstrings 31 and stretcher 32 of counter-force component 3 are installed；
Step 3: air duct 1, is suspended on tunnel 4 by installation air duct 1 by the suspension parts 2；
Step 4: installation counter-force component 3, all drawstrings 31 are connected on tunnel 4, wherein each drawstring 31
Direction be obliquely installed with respect to the axis of air duct 1, and towards the direction of flow of air-flow.
The construction method of the negative pressure air duct system, first air duct 1 is unfolded to form the form fit with tunnel 4, Ran Hou
Connect suspension parts 2 and counter-force component 3 on air duct 1, wherein suspension parts 2 is used to air duct 1 being suspended on tunnel 4, and counter-force
Component 3 is to be connected to by several drawstrings 31 on air duct 1, and by drawstring 31 along the axially inclined setting of air duct 1 and towards air-flow
Direction of flow be connected on tunnel 4, air duct 1 is suspended on tunnel 4 by final realize, and counter-force component 3 is tensioned
Negative pressure air duct system of the present invention, by hanging counter-force component 3 on air duct 1, can be passed through in air duct 1
After air-flow, when air-flow flows through the straightway 16 of air duct 1, the stickiness power of the air-flow is by each skeleton 12 on cylinder 11 and suspension part
The power of part 2 is offset, which will not be deformed, and when air-flow flows through the bending section 17 of air duct 1, although the bending section
17 1 ventilation-sectional area of air duct is reduced, and pressure increases suddenly, but since air duct 1 is equipped with counter-force component 3, the drawing of the counter-force component 3
Rope 31 can provide bending section 17 counter-force opposite with air flow direction, to offset the stickiness that air-flow is produced in the bending section 17
Power, enables the cylinder 11 of bending section 17 to maintain the original state.The construction method of the negative pressure air duct system, it is simple to operate, can
For tunnel 4 run into need 1 curved operating mode of air duct when, negative pressure air duct 1 in use will not be by downwind air-flow
The stickiness power of generation, that is, pulling force draws the flat phenomenon of bad suction, good reliability.
Embodiment 3
As shown in figure 3, a kind of open anti-flat high intensity negative pressure air duct 1 of suction of the present embodiment 3 is used to be installed on tunnel 4 for level
The situation of turning：
Specifically, when being installed, the situation in reference implementation example 2, it is special, it is necessary to bending section 17 arc tube
Several drawstrings 31 are installed in the outside of body 11, and each drawstring 31 is equipped with stretcher 32；In the inner side of arc cylinder 11 of bending section 17
Tightening device is installed, wherein tightening device includes the steel wire rope 33 for being connected to 17 both ends of bending section, two steel wire ropes
33 are connected on the tunnel 4 in the oblique top of splayed shape, and each steel wire rope 33 is equipped with stretcher 32.
It is applied man-hour requirement and uses following construction method and step：
The first step：The component 14 of withholding of negative pressure air duct 1 is suspended on the anchor pole 22 of 4 roof of tunnel, it is desirable to：Hanging
Need straight, head-rope 21 that is on air duct 1 and each withholding component 14 is required to hang；
Second step：31 one end of drawstring is fixed on to the outside of arc cylinder 11 of bending section 17, the other end fixes 4 side of tunnel
Wall, is obliquely installed drawstring 31, and opposite direction is flowed to towards distinguished and admirable, to offset the suction that distinguished and admirable adhesive tape comes, and uses steel wire
33 tighteners of restricting tense；
3rd step：Steel wire rope 33 at 17 both ends of bending section, is connected by two steel wire ropes 33 in the oblique top of splayed shape
It is connected on tunnel 4, each steel wire rope 33 is equipped with stretcher 32, is fixed on tunnel 4.
Embodiment 4
As shown in figure 4, a kind of open anti-flat high intensity negative pressure air duct 1 of suction of the present embodiment 4 is used to installed in tunnel 4 be slope
The situation of turning, it is applied man-hour requirement and uses following construction method and step：
The first step：All drawstrings 31 of counter-force component 3 are connected to the straightway 16 that end 171 is flowed into positioned at bending section air-flow
Cylinder 11 skeleton 12 on, each drawstring 31 is equipped with stretcher 32；
Second step：Tightening device is installed in the inner side of arc cylinder 11 of bending section 17, wherein the tightening device includes dividing
The steel wire rope 33 at 17 both ends of bending section is not connected to, and two steel wire ropes 33 are connected to the tunnel 4 in the oblique top of splayed shape
On, each steel wire rope 33 is equipped with stretcher 32, is fixed on tunnel 4.
Embodiment 5
As seen in figs. 5-6, a kind of open anti-flat high intensity negative pressure air duct 1 of suction of the present embodiment 5 is used to installed in tunnel 4 be perpendicular
To the situation of turning, it is necessary to which 1 decurvation of negative pressure air duct is connected to the irony air duct 5 in tunnel 4, the irony air duct 5
With a connector 6, it is applied man-hour requirement and uses following construction method and step：
The first step：1 bending section air-flow outflow end 172 of air duct is connected on the connector 6 of irony air duct 5, and in outer surface cover
If retainer ring 34 is fixed；
Second step：Air duct 1 is suspended on tunnel 4 by suspension parts 2, suspension parts 2 is connected to the arc of bending section 17
The outside of shape cylinder 11；
3rd step：Counter-force component 3 is connected on air duct 1, wherein the tightening device of counter-force component 3 is first installed, specifically,
The inner side of the arc cylinder 11 installation tightening device of bending section 17, tightening device include steel wire rope 33 and on steel wire rope 33
Tight device 32, wherein steel wire rope 33 link together the skeleton 12 of bending section 17, and the steel wire rope 33 is located at the arc of bending section 17
The inner side of shape cylinder 11；
4th step：One end connection bending section air-flow of two drawstrings 31 of counter-force component 3 is flowed into 12 bottom of skeleton at end 171
In portion, the other end of two drawstrings 31 forms splayed shape and is connected on tunnel 4, and each drawstring 31 is equipped with stretcher 32；
5th step：Stretcher 32 on drawstring 31 and steel wire rope 33 is opened into the suspension of completion negative pressure air duct 1.
Above example only not limits technical solution described in the invention to illustrate the present invention, although this explanation
Book is with reference to above-mentioned each embodiment to present invention has been detailed description, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any modify to the present invention or equivalent substitution；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, it should all cover among scope of the presently claimed invention.
Claims (10)
- A kind of 1. anti-flat high intensity negative pressure air duct system of suction, it is characterised in that including：Air duct (1), includes the cylinder (11) of base fabric material, several skeletons (12) on the cylinder (11) and several Withhold component (14)；Suspension parts (2), for connect it is each it is described withhold component (14), and the air duct (1) is suspended on tunnel (4), The shape and the shape of tunnel (4) for making the air duct (1) formation are consistent, i.e., described air duct (1), which is formed, includes straightway (16) and bending section (17) shape；Counter-force component (3), including several drawstrings (31), wherein one end of each drawstring (31) is connected to the air duct (1) on the skeleton (12) of bending section (17) or/and be connected to positioned at bending section air-flow flow into end (171) straightway (16) bone On frame (12), the other end is connected on tunnel (4)；The direction of each drawstring (31) tilts with respect to the axis of air duct (1) and sets Put, and towards the direction of flow of air-flow.
- 2. one kind according to claim 1 is anti-to inhale flat high intensity negative pressure air duct system, it is characterised in that all drawstrings (31) a part of drawstring (31) is connected on the skeleton (12) of the bending section (17) of the air duct (1) in, another part drawstring (31) it is connected to and is flowed into positioned at bending section (17) air-flow on straightway (16) skeleton (12) at end.
- 3. one kind according to claim 1 is anti-to inhale flat high intensity negative pressure air duct system, it is characterised in that each drawstring (31) it is equipped with stretcher (32).
- 4. one kind according to claim 1 is anti-to inhale flat high intensity negative pressure air duct system, it is characterised in that the air duct (1) Bending section (17) be equipped with so that bending section (17) cylinder (11) keep brake forming tightening device.
- 5. one kind according to claim 4 is anti-to inhale flat high intensity negative pressure air duct system, it is characterised in that the tightening device Include the steel wire rope (33) of connection bending section (17) all skeletons (12), described steel wire rope (33) one end is connected to bending section air-flow Flow on the skeleton (12) of end (171), the other end is connected on the skeleton (12) of bending section air-flow outflow end (172), the steel Stretcher (32) is connected between the both ends of cord (33).
- 6. according to a kind of any anti-flat high intensity negative pressure air duct systems of suction of claim 1-5, it is characterised in that the wind Cylinder (1) includes the interconnection of several air duct units and forms.
- 7. a kind of anti-construction method for inhaling flat high intensity negative pressure air duct system, it is characterised in that it is characterised in that it includes following step Suddenly：Step 1: connection prepares, air duct (1) is unfolded to form shape to be installed in tunnel (4) according to the shape of tunnel (4) Into, including straightway (16) and bending section (17)；Step 2: installation suspension parts (2) and counter-force component (3), the installation suspension parts (2) on air duct (1), and bending Several drawstrings (31) and stretcher (32) of counter-force component (3) are installed on the cylinder of section (17)；Step 3: air duct (1), is suspended on tunnel (4) by installation air duct (1) by the suspension parts (2)；Step 4: installation counter-force component (3), all drawstrings (31) are connected on tunnel (4), wherein each drawstring (31) direction is obliquely installed with respect to the axis of air duct (1), and towards the direction of flow of air-flow.
- A kind of 8. anti-construction method for inhaling flat high intensity negative pressure air duct system according to claim 7, it is characterised in that when When the bending section (17) of air duct (1) is located at tunnel (4) flat bank, bending section (17) arc cylinder (11) if outside installation Dry drawstring (31), each drawstring (31) are equipped with stretcher (32)；The installation on the inside of the arc cylinder (11) of bending section (17) Tightening device, wherein the tightening device includes the steel wire rope (33) for being connected to bending section (17) both ends, two steel Cord (33) is connected on the tunnel (4) in the oblique top of splayed shape, and each steel wire rope (33) is equipped with stretcher (32).
- A kind of 9. anti-construction method for inhaling flat high intensity negative pressure air duct system according to claim 7, it is characterised in that when When the bending section (17) of air duct (1) is located at the turning of tunnel (4) slope, all drawstrings (31) of the counter-force component (3) are connected to Flow into positioned at bending section air-flow on the skeleton (12) of the cylinder of the straightway (16) of end (171), set on each drawstring (31) There is stretcher (32)；The installation tightening device on the inside of the arc cylinder (11) of bending section (17), wherein the tightening device includes The steel wire rope (33) at bending section (17) both ends is connected to, two steel wire ropes (33) are in the oblique top connection of splayed shape On the tunnel (4), each steel wire rope (33) is equipped with stretcher (32).
- A kind of 10. anti-construction method for inhaling flat high intensity negative pressure air duct system according to claim 7, it is characterised in that When the bending section (17) of air duct (1), which is located at tunnel (4), vertically turns, the counter-force component (3) includes two drawstrings (31), and two One end of a drawstring (31) connects the bending section air-flow and flows on skeleton (12) bottom of end (171), two drawstrings (31) The other end forms splayed shape and is connected on tunnel (4), and each drawstring (31) is equipped with stretcher (32)；In bending section (17) installation tightening device on the inside of arc cylinder (11), the tightening device include steel wire rope (33) and arranged on steel wire rope (33) On stretcher (32), wherein the steel wire rope (33) links together the skeleton (12) of bending section (17), the steel wire rope (33) on the inside of the arc cylinder (11) of bending section (17), the suspension parts (2) is connected to the arc tube of bending section (17) On the outside of body (11).
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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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