CN209115110U - Device for liaison tunnel vertical shaft air draft - Google Patents
Device for liaison tunnel vertical shaft air draft Download PDFInfo
- Publication number
- CN209115110U CN209115110U CN201822028594.3U CN201822028594U CN209115110U CN 209115110 U CN209115110 U CN 209115110U CN 201822028594 U CN201822028594 U CN 201822028594U CN 209115110 U CN209115110 U CN 209115110U
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- blower
- vertical shaft
- bottom plate
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- lower layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
A kind of device for liaison tunnel vertical shaft air draft, a circle cooling fin is arranged at intervals on silo bottom inner wall, vertical shaft is sequentially arranged at intervals with upper layer blower upper mounted plate from top to bottom, lower layer's blower upper mounted plate, upper layer blower bottom plate, lower layer's blower bottom plate, several fan units are arranged at intervals between upper layer blower upper mounted plate and upper layer blower bottom plate, several fan units are arranged at intervals between lower layer's blower upper mounted plate and lower layer's blower bottom plate, one upper lateral part of vertical shaft is provided with mounting rack, it is provided with solar panel on mounting rack and surveys anemobiagraph, solar panel and survey anemobiagraph are electrically connected with the processor being arranged in computer room, processor is electrically connected by the electric wire being mounted in route pipe with cooling fin；The utility model can not only be installed in vertical shaft, and inclined shaft can also be used, while being also applied for vcehicular tunnel, railway tunnel, city tunnel etc..
Description
Technical field
The utility model belongs to Tunnel Engineering technical field, and in particular to the dress for being used for the air draft of liaison tunnel vertical shaft to one
It sets.
Background technique
With the development of technology, the draft type in tunnel is varied, includes that gravity-flow ventilation and a variety of mechanical-assisteds are logical
Wind.Tunnel gravity-flow ventilation is exactly to realize that air is exchanged with Earth Surface Atmosphere in tunnel using natural airflow in tunnel, to reach tunnel
A kind of draft type of ventilation purpose.Tunnel gravity-flow ventilation is without building special ventilation equipment, thus tunnel construction and operation
Management is simple, expense is low, should preferentially use when having ready conditions.Force ventilation, as its name suggests, be exactly using ventilation blower etc. it is mechanical into
Row tunnel ventilation reduces pollutant concentration.
For tunnel trend in growing up, gravity-flow ventilation has been far from satisfying safe and healthy requirement at present, so that including
Full ventilation by force draft, vertical shaft segmented longitudinal ventilation and mixed ventilation etc. a series of force ventilation are commonly used.But
It is to develop in the society of energy conservation in current this, the running cost of force ventilation is high, and power consumption is huge, often becomes highway
The obstruction of tunnel development.
To solve this contradiction, a lot of novel energy-conserving draft types, including the complementary ventilation in double holes are expedited the emergence of, vertical shaft is without dynamic
Power ventilation etc..Especially for long highway tunnel, when Design of ventilation, often considers the utilization of natural wind, will generally conduct
The natural wind of resistance becomes power, reduces ventilating system scale, reduces expense.But since tunnel local environment is different, weather shape
State is difficult to calculate, so that natural wind is difficult to control.Therefore reasonable to calculate and utilize vertical shaft natural wind, it will to directly affect tunnel
Interior allocation of the amount of air and blower configuration, energy conservation when runing for tunnel have obvious effects on.
Boosting power of the utility model based on tunnel shaft, can be rationally effective by motorless combination unit system
Using the natural wind locating for vertical shaft from all directions, the utilization rate of natural wind is improved, reduces energy consumption；Simultaneously in local wind speed very little
In the case of, vertical shaft boosting power is improved by solar power generation heating, improves ventilation efficiency.
Summary of the invention
The technical problem to be solved by the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of design conjunction is provided
The expense of reason, structure are simple, improve the boosting power of tunnel shaft, reduce force ventilation energy consumption, reduction operation improves air draft effect
The device for the air draft of liaison tunnel vertical shaft of rate.
Solve above-mentioned technical problem the technical solution adopted is that: be arranged at intervals on silo bottom inner wall a circle heat dissipation
Piece, vertical shaft are sequentially arranged at intervals under upper layer blower upper mounted plate, lower layer's blower upper mounted plate, upper layer blower fixed from top to bottom
Plate, lower layer's blower bottom plate, are arranged at intervals with several blowers between upper layer blower upper mounted plate and upper layer blower bottom plate
Unit, lower layer's blower upper mounted plate and lower layer's blower bottom plate are arranged at intervals with several fan units, one upper lateral part of vertical shaft
It is provided with mounting rack, solar panel is provided on mounting rack and surveys anemobiagraph, solar panel and survey anemobiagraph and sets
The processor electrical connection in computer room is set, processor is electrically connected by the electric wire being mounted in route pipe with cooling fin.
The fan unit of the utility model are as follows: blower cylinder top is provided with no-power air blower, unpowered on blower cylinder
Blower lower part is provided with fixing layer connection sheet.
The no-power air blower of the utility model are as follows: blade connecting plate, blade connecting plate are provided on blower cylinder lateral wall
On be provided with blower periphery blade uniformly at intervals, horizontal cross is provided with the connection of two horizontal fans on blower cylinder inner sidewall
Bar, two horizontal fan connecting rod tie point upper verticals are provided with central axis, are provided with inner vanes on central axis.
3~6 inner vanes have been uniformly arranged on the central axis of the utility model in 360 ° of phases.
The inner vanes of the utility model are ellipsoidal structure.
The blower periphery blade of the utility model is semicircular structure, blower periphery blade and blower cylinder tangential direction
Angle a is 30 °~45 °.
Between the upper layer blower upper mounted plate and upper layer blower bottom plate of the utility model in 360 ° of phases uniformly at intervals
4~6 groups of fan units are provided with, the fan unit being arranged between upper layer blower upper mounted plate and upper layer blower bottom plate is perpendicular
It is in 2 groups or 3 groups of layings on well radial direction；Between lower layer's blower upper mounted plate and lower layer's blower bottom plate in 360 ° of phases between
Every being uniformly arranged 4~6 groups of fan units, the blower list being arranged between lower layer's blower upper mounted plate and lower layer's blower bottom plate
Member is in 2 groups or 3 groups of layings on vertical shaft radial direction；It is arranged between upper layer blower upper mounted plate and upper layer blower bottom plate
The fan unit being arranged between fan unit and lower layer's blower upper mounted plate and lower layer's blower bottom plate is staggered.
The utility model has the advantage that compared with the prior art
1, the utility model can be provided separately in the vertical shaft of no axial flow blower, individually carry out the ventilation in tunnel；It can also be with
It is combined with there is the vertical shaft of Ventilator Room, it is in place to increase a bifurcated well head installation present apparatus, when without opening blower
When, bifurcated can be opened and carry out Unpowered ventilation.
2, the utility model not only fixes blower upper end, and also the bottom of connecting tube is fixed, increases stability；For
Mitigate weight, the optional plastics of the material of connecting tube；It is smooth as far as possible inside connecting tube to increase drafting efficiency；Because of ring locating for tunnel
Factors, the fan connecting tube length such as border is often different, and the size dimension of vertical shaft is also different, and blower layering is different can suitably be chosen.
3, the heating auxiliary device of the utility model and blower fan apparatus are separated by a certain distance, and will not be influenced each other；Line pipe
Son can be walked outside vertical shaft and inside vertical shaft；Cooling fin riding position is appropriately mounted under blower fixing layer, and quantity is by rule
Mould size can be arranged according to the actual situation.
4, the utility model can not only be installed in vertical shaft, and inclined shaft can also be used, while be also applied for vcehicular tunnel, railway
Tunnel, city tunnel etc..
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Fig. 2 is 2 arrangement schematic diagram of fan unit in Fig. 1.
Fig. 3 is the top view of Fig. 1
Fig. 4 is Fig. 12 arrangement schematic diagram of fan unit at the middle and upper levels.
Fig. 5 is 2 arrangement schematic diagram of Tu1Zhong lower layer fan unit.
Fig. 6 is 10 arrangement schematic diagram of cooling fin.
Fig. 7 is the top view of no-power air blower 2-2 in Fig. 6.
Fig. 8 is the front view of no-power air blower 2-2 in Fig. 6.
Fig. 9 is the cross-sectional view of no-power air blower 2-2 in Fig. 6.
In figure: 1, vertical shaft；2, fan unit；3, lower layer's blower upper mounted plate；4, upper layer blower upper mounted plate；5, solar energy
Solar panel；6, anemobiagraph is surveyed；7, mounting rack；8, computer room；9, route pipe；10, cooling fin；11, upper layer blower bottom plate；
12, lower layer's blower bottom plate；2-1, blower cylinder；2-2, no-power air blower；2-3, fixing layer connection sheet；Outside 2-2-1, blower
Enclose blade；2-2-2, blade connecting plate；2-2-3, horizontal fan connecting rod；2-2-4, inner vanes；2-2-5, central axis.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this
A little embodiments.
Embodiment 1
In Fig. 1~9, the utility model is used for the device of liaison tunnel vertical shaft air draft, is spaced in 1 bottom interior wall of vertical shaft
One circle cooling fin 10 is installed, successively interval is equipped with upper layer blower upper mounted plate 4, solid on lower layer's blower to vertical shaft 1 from top to bottom
Fixed board 3, upper layer blower bottom plate 11, lower layer's blower bottom plate 12, it is fixed under upper layer blower upper mounted plate 4 and upper layer blower
5 groups of fan units 2 are installed in 360 ° of phases uniformly at intervals between plate 11, are consolidated under upper layer blower upper mounted plate 4 and upper layer blower
The fan unit 2 installed between fixed board 11 is in 2 groups of layings on 1 radial direction of vertical shaft；Lower layer's blower upper mounted plate 3 and lower layer's wind
5 groups of fan units, lower layer's blower upper mounted plate 3 and lower layer's wind are installed in 360 ° of phases uniformly at intervals between machine bottom plate 12
The fan unit installed between machine bottom plate 12 is in 2 groups of layings on 1 radial direction of vertical shaft；4 He of upper layer blower upper mounted plate
The fan unit 2 and lower layer's blower upper mounted plate 3 and lower layer's blower bottom plate 12 installed between upper layer blower bottom plate 11
Between the fan unit 2 installed be staggered.
1 one upper lateral part of vertical shaft is equipped with mounting rack 7, and solar panel 5 is equipped on mounting rack 7 and surveys anemobiagraph 6, is surveyed
Bearing 6 is market products, and model can choose RS-FX-n01, solar panel 5 and survey anemobiagraph 6 and be mounted on computer room 8
Interior processor electrical connection, processor is market products, and model can choose FX1N-14MR-001.Processor passes through installation
Electric wire in route pipe 9 is electrically connected with cooling fin 10, and solar panel 5 is that cooling fin 10 provides power, processor control
Heater switch is opened in power storage processed and progress wind speed identification, and control cooling fin 10 generates heat.
Fan unit 2 described in the utility model is by blower cylinder 2-1, no-power air blower 2-2, fixing layer connection sheet 2-3
It connects and composes, the top blower cylinder 2-1 is equipped with no-power air blower 2-2, and no-power air blower lower part 2-2 pacifies on blower cylinder 2-1
Equipped with fixing layer connection sheet 2-3, fixing layer connection sheet 2-3 and lower layer's blower upper mounted plate 3, upper layer blower upper mounted plate 4, upper layer
Blower bottom plate 11, lower layer's blower bottom plate 12 match.
The no-power air blower 2-2 of the utility model is by blower periphery blade 2-2-1, blade connecting plate 2-2-2, horizontal fan
Connecting rod 2-2-3, inner vanes 2-2-4, central axis 2-2-5 are connected and composed, and blade company is equipped on blower cylinder 2-1 lateral wall
Blower periphery blade 2-2-1, blower periphery blade 2-2-1 are installed uniformly at intervals on fishplate bar 2-2-1, blade connecting plate 2-2-1
For semicircular structure, the angle a of blower periphery blade 2-2-1 and blower cylinder 2-1 tangential direction is 36 °, in blower cylinder 2-1
Horizontal cross is equipped with two horizontal fan connecting rod 2-2-3, two horizontal fan connecting rod 2-2-3 tie point tops on side wall
It is vertically installed with central axis 2-2-5, inner vanes 2-2-4 is installed on central axis 2-2-5, the inner vanes 2-2-4 is
Ellipsoidal structure is uniformly equipped with 4 inner vanes 2-2-4 in the upper 360 ° of phases of the central axis 2-2-5 of the present embodiment.
Embodiment 2
In above-described embodiment 1, between the upper layer blower upper mounted plate 4 and upper layer blower bottom plate 11 of the present embodiment
4 groups of fan units 2 are installed uniformly at intervals in 360 ° of phases, upper layer blower upper mounted plate 4 and upper layer blower bottom plate 11 it
Between the fan unit 2 installed on 1 radial direction of vertical shaft in 2 groups of layings；It is fixed under lower layer's blower upper mounted plate 3 and lower layer's blower
4 groups of fan units are installed in 360 ° of phases uniformly at intervals between plate 12, are fixed under lower layer's blower upper mounted plate 3 and lower layer's blower
The fan unit installed between plate 12 is in 2 groups of layings on 1 radial direction of vertical shaft；Upper layer blower upper mounted plate 4 and upper layer blower
It is installed between the fan unit 2 installed between bottom plate 11 and lower layer's blower upper mounted plate 3 and lower layer's blower bottom plate 12
Fan unit 2 be staggered, the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 3
In above-described embodiment 1,360 ° between the upper layer blower upper mounted plate 4 and upper layer blower bottom plate 11 of the present embodiment
6 groups of fan units 2 are installed uniformly at intervals in phase, are pacified between upper layer blower upper mounted plate 4 and upper layer blower bottom plate 11
The fan unit 2 of dress is in 2 groups of layings on 1 radial direction of vertical shaft；Lower layer's blower upper mounted plate 3 and lower layer's blower bottom plate 12
Between 6 groups of fan units, lower layer's blower upper mounted plate 3 and lower layer's blower bottom plate 12 are installed uniformly at intervals in 360 ° of phases
Between the fan unit installed on 1 radial direction of vertical shaft in 2 groups of layings；It is solid under upper layer blower upper mounted plate 4 and upper layer blower
The wind installed between the fan unit 2 installed between fixed board 11 and lower layer's blower upper mounted plate 3 and lower layer's blower bottom plate 12
Machine unit 2 is staggered, and the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 4
In above-described embodiment 1~3, the upper layer blower upper mounted plate 4 and upper layer blower bottom plate 11 of the present embodiment it
Between the fan unit 2 installed on 1 radial direction of vertical shaft in 3 groups of layings；The connection relationship of remaining each components and components
It is identical with embodiment 1.
Embodiment 5
In above-described embodiment 1~4,3 inside are uniformly installed in the upper 360 ° of phases of the central axis 2-2-5 of the present embodiment
The connection relationship of blade 2-2-4, remaining each components and components is identical with embodiment 1.
Embodiment 6
In above-described embodiment 1~4,6 inside are uniformly installed in the upper 360 ° of phases of the central axis 2-2-5 of the present embodiment
The connection relationship of blade 2-2-4, remaining each components and components is identical with embodiment 1.
Embodiment 7
In above-described embodiment 1~4, the blower periphery blade 2-2-1 and blower cylinder 2-1 tangential direction of the present embodiment
Angle a is 30 °, and the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 8
In above-described embodiment 1~4, the blower periphery blade 2-2-1 and blower cylinder 2-1 tangential direction of the present embodiment
Angle a is 45 °, and the connection relationship of remaining each components and components is identical with embodiment 1.
The working principle of the utility model is as follows:
The blower periphery fan blade 2-2-2 of upper layer and lower layer fan unit 2 is pushed to turn by the natural wind of 1 present position of vertical shaft
It is dynamic, so that internal fan blade 2-2-4 be driven to rotate, draught head is generated, is flowed the natural wind of any angle by blower cylinder 2-1
It is converted into 1 air-flow from bottom to top in vertical shaft, the boosting power in tunnel shaft 1 is improved, effectively reduces tunnel pollutant concentration, when
It surveys anemobiagraph 6 and detects that the requirement utilized is not achieved in wind speed, signal can be fed back to processor, be converted using solar battery 5
Electric energy air in vertical shaft 1 heat by cooling fin 10, improve boosting power, secondary ventilation, compared to simple vertical shaft
It says, present apparatus drafting efficiency is high, energy conservation and environmental protection, few noise, is the additional dress of the vertical shaft simple and cheap applied to the one kind in tunnel
It sets.
According to tunnel local environment, the factors such as size dimension of vertical shaft, it is upper and lower two layers that the present apparatus, which is not fixed, can be increased
Or it reduces, and the number of every layer of fan unit 2 and arrangement can be done adjustment appropriate by actual conditions.
No-power air blower 2-2 selects stainless steel as material as far as possible, and varnishes with lacquer, and prevents from corroding, and increases the service life.
No-power air blower 2-2 size cannot be excessive, otherwise when natural wind wind-force is smaller, resistance suffered by blower it is excessive without
It can rotate or speed is slower, and then air-flow upward enough cannot be generated, influence ventilation effect；The no-power air blower 2- of selection
2 sizes cannot be too small, and the vertical shaft boosting power otherwise generated reduces, and influences ventilation effect；The utility model no-power air blower 2-2 is straight
Diameter is 1m~2m.
Consider rain and snow weather, color steel can be built in pit mouth height appropriate, prevents sleet from entering no-power air blower and erecting
In well, ventilation effect is influenced.
Claims (7)
1. a kind of device for liaison tunnel vertical shaft air draft, it is characterised in that: one is arranged at intervals on silo bottom inner wall
Cooling fin is enclosed, vertical shaft is sequentially arranged at intervals with upper layer blower upper mounted plate, lower layer's blower upper mounted plate, upper layer blower from top to bottom
Bottom plate, lower layer's blower bottom plate, if being arranged at intervals between upper layer blower upper mounted plate and upper layer blower bottom plate
Dry fan unit, lower layer's blower upper mounted plate and lower layer's blower bottom plate are arranged at intervals with several fan units, vertical shaft one
Upper lateral part is provided with mounting rack, and solar panel is provided on mounting rack and surveys anemobiagraph, solar panel and survey wind speed
Instrument is electrically connected with the processor being arranged in computer room, and processor is electrically connected by the electric wire being mounted in route pipe with cooling fin
It connects.
2. the device according to claim 1 for the air draft of liaison tunnel vertical shaft, it is characterised in that the fan unit
Are as follows: blower cylinder top is provided with no-power air blower, and no-power air blower lower part is provided with fixing layer connection sheet on blower cylinder.
3. the device according to claim 2 for the air draft of liaison tunnel vertical shaft, it is characterised in that the unpowered wind
Machine are as follows: it is provided with blade connecting plate on blower cylinder lateral wall, is provided with blower periphery blade on blade connecting plate uniformly at intervals,
Horizontal cross is provided with two horizontal fan connecting rods, two horizontal fan connecting rod tie point tops on blower cylinder inner sidewall
It is vertically installed with central axis, is provided with inner vanes on central axis.
4. the device according to claim 3 for the air draft of liaison tunnel vertical shaft, it is characterised in that: on the central axis
3~6 inner vanes have been uniformly arranged in 360 ° of phases.
5. the device according to claim 4 for the air draft of liaison tunnel vertical shaft, it is characterised in that: the inner vanes
For ellipsoidal structure.
6. the device according to claim 3 for the air draft of liaison tunnel vertical shaft, it is characterised in that: the blower periphery
Blade is semicircular structure, and the angle a of blower periphery blade and blower cylinder tangential direction is 30 °~45 °.
7. the device according to claim 1 for the air draft of liaison tunnel vertical shaft, it is characterised in that: the upper layer blower
It is provided with 4~6 groups of fan units, upper layer blower between upper mounted plate and upper layer blower bottom plate in 360 ° of phases uniformly at intervals
The fan unit being arranged between upper mounted plate and upper layer blower bottom plate is in 2 groups or 3 groups of layings on vertical shaft radial direction；Under
It is provided with 4~6 groups of fan units uniformly at intervals in 360 ° of phases between layer blower upper mounted plate and lower layer's blower bottom plate, under
The fan unit being arranged between layer blower upper mounted plate and lower layer's blower bottom plate is on vertical shaft radial direction in 2 groups or 3 groups
It lays；The fan unit that is arranged between upper layer blower upper mounted plate and upper layer blower bottom plate and lower layer's blower upper mounted plate and
The fan unit being arranged between lower layer's blower bottom plate is staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822028594.3U CN209115110U (en) | 2018-12-04 | 2018-12-04 | Device for liaison tunnel vertical shaft air draft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822028594.3U CN209115110U (en) | 2018-12-04 | 2018-12-04 | Device for liaison tunnel vertical shaft air draft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115110U true CN209115110U (en) | 2019-07-16 |
Family
ID=67207563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822028594.3U Active CN209115110U (en) | 2018-12-04 | 2018-12-04 | Device for liaison tunnel vertical shaft air draft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372516A (en) * | 2018-12-04 | 2019-02-22 | 河南省尧栾西高速公路建设有限公司 | Device for liaison tunnel vertical shaft air draft |
-
2018
- 2018-12-04 CN CN201822028594.3U patent/CN209115110U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372516A (en) * | 2018-12-04 | 2019-02-22 | 河南省尧栾西高速公路建设有限公司 | Device for liaison tunnel vertical shaft air draft |
| CN109372516B (en) * | 2018-12-04 | 2023-12-22 | 河南省尧栾西高速公路建设有限公司 | Device for assisting in exhausting air of tunnel shaft |
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