EP0675263B1 - Tunnel dust collecting system - Google Patents

Tunnel dust collecting system Download PDF

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Publication number
EP0675263B1
EP0675263B1 EP95107725A EP95107725A EP0675263B1 EP 0675263 B1 EP0675263 B1 EP 0675263B1 EP 95107725 A EP95107725 A EP 95107725A EP 95107725 A EP95107725 A EP 95107725A EP 0675263 B1 EP0675263 B1 EP 0675263B1
Authority
EP
European Patent Office
Prior art keywords
air
tunnel
dust collecting
collecting system
collecting chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95107725A
Other languages
German (de)
French (fr)
Other versions
EP0675263A1 (en
Inventor
Shogo Nakamura
Toshiharu Sasamoto
Yoshihiro Minowa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of EP0675263A1 publication Critical patent/EP0675263A1/en
Application granted granted Critical
Publication of EP0675263B1 publication Critical patent/EP0675263B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21F1/003—Ventilation of traffic tunnels
    • 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
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20—Drawing-off or depositing dust

Definitions

  • This invention relates to a tunnel dust collecting system according to the preamble of the claim.
  • an electrical dust collector is used to remove dust and smoke from the contaminated air in a tunnel thereby to use the air again.
  • the tunnel dust collecting system is installed on the ceiling of a tunnel which is provided mainly for automobiles.
  • a tunnel dust collecting system according to the preamble of claim 1 is known from JP-A-63-319072.
  • Fig. 2 (A) There are available a variety of tunnel dust collecting systems. Typical ones of the systems, are a tunnel dust collecting system of bypass tunnel type as shown in Fig. 2 (A), and a tunnel dust collecting system of ceiling installation type as shown in Fig. 2(B) and Figs. 3(A) and 3(B).
  • Figs. 3(A) and 3(B) are a plan view and a sectional view of the tunnel dust collecting system shown in Fig. 2(B).
  • a bypass tunnel is connected, as a dust collecting chamber 2, to the main tunnel 1 provided for automobiles, so that the air contaminated in the tunnel 1 is led into the dust collecting chamber at one end opened in the side wall of the main tunnel 1, where it is decontaminated with an electrical dust collector 3 (hereinafter referred to merely as "a dust collector 3", when applicable).
  • the air thus processed is supplied into the main tunnel 1 with an air blower 4 through the other end of the dust collecting chamber 2.
  • a ceiling board 5 is installed in such a manner as to form a dust collecting chamber 2 in the upper portion of a tunnel.
  • the dust collecting chamber 2 has one end 2a which is used to suck air from the tunnel (hereinafter referred to as "an air sucking end 2a”, when applicable), and the other end 2b which is used to supply decontaminated air into the tunnel (hereinafter referred to as "an air supplying end 2b", when applicable).
  • the contaminated air sucked into the dust collecting chamber 2 through the air sucking end 2a is decontaminated with dust collectors 3, and the air thus decontaminated is supplied into the tunnel with air blowers 4 provided near the air supplying end 2b.
  • the tunnel dust collecting system of ceiling installation type is advantageous in that its installation cost is lower because it is unnecessary to form the bypass tunnel.
  • two dust collectors 3 are provided in the dust collecting chamber 2 in such a manner that they are separated from each other with a partition board 6. More specifically, the dust collecting chamber is divided by the partition board 6 into two parts,in which the two dust collectors are provided, respectively.
  • Two axial flow type air blowers 4 with cylindrical casings 4b are provided at the air supplying end 2b of the dust collecting chamber 2, and air sucking inlets 7 are provided at the air sucking end of the dust collecting chamber 2.
  • the air in the upper portion of the tunnel is sucked through the air sucking inlets 7 linearly along the central axis of the tunnel into the dust collecting chamber and decontaminated with the dust collectors 3, and the air thus decontaminated is linearly supplied into the tunnel with the air blowers 4 through air supplying outlets 4a.
  • the ceiling board 5 serves as a base board which supports the dust collectors 3 etc. Generally, the ceiling board 5 is extended to the air supplying outlets 4a of the air blowers 4, being utilized as means for making access to the air blowers for inspection or maintenance.
  • the above-described conventional tunnel dust collecting system of ceiling installation type is disadvantageous in the following points lowering its dust collection efficiency.
  • the conventional tunnel dust collecting system as shown in Fig. 3, the air decontaminated by the dust collectors 3 is blown along the central axis of the tunnel 1 into the upper portion of the latter as it is. Therefore, when compared with the tunnel dust collecting system of bypass tunnel type, the decontaminated air is difficult to mix with the contaminated air in the driveway space la of the tunnel 1.
  • the conventional system cannot decontaminate air sufficiently in the area where the engine load of an automobile is increased to increase the contamination of air as in an up- grade driveway of an undersea tunnel.
  • the interval of installation of dust collecting systems is determined with the distance taken into consideration with which decontaminated air is completely mixed with contaminated air.
  • the ceiling board 5 is provided below the air blowers 4. Therefore, as shown in Fig. 3(B), the stream of air blown by the air blowers 4 is not smoothly met with the stream of air around it, thus forming eddies 12. As a result, energy loss is caused, and accordingly it is necessary to use high electric power to supply decontaminated air at a predetermined flow rate.
  • a general object of this invention is to provide a tunnel dust collecting system in which these difficulties are eliminated, thereby to improve the cleanliness of the air in a tunnel. This will be described in more detail.
  • an object of this invention is to provide a tunnel dust collecting system with which the distance required for mixing decontaminated air with contaminated air is decreased, so that the number of dust collecting systems per unitary length of a tunnel is increased, whereby the air decontamination degree in the tunnel is improved.
  • the air blowing direction forms an cubical angle of 5 to 12° with the central axis of the tunnel.
  • the decontaminated air blowing direction of the air blowers are set slightly downwardly outwardly with respect to the central axis of the tunnel so as to form spiral air streams in the tunnel thereby to quickly mix the decontaminated air with the contaminated air in the tunnel.
  • a ceiling board 5 having a predetermined length is installed in a tunnel 1 to form a dust collecting chamber 2 in the upper portion of the tunnel.
  • the left end of the dust collecting chamber 2 is an air sucking end 2a
  • the right end is an air supplying end 2b.
  • Two dust collectors 3 are arranged along the right and left side walls of the dust collecting chamber 2, respectively, in such a manner that they are positioned staggered in the dust collecting chamber 2, or they are arranged as if overlapped as viewed from the air sucking end of the dust collecting chamber.
  • the dust collecting chamber 2 is separated into two right and left air flow chambers with a partition wall 6 extended along the central axis of the dust collecting chamber 2 in such a manner that the right and left air flow chambers have the two dust collectors 3, respectively.
  • Two axial-flow type air blowers 4 are connected to the right and left air flow chambers at the air supplying end.
  • Each of the air blowers 4 comprises a cylindrical casing, and an impeller and a drive motor which are built in the casing.
  • Each of the air blowers 4 has an air supplying outlet 4a with a nozzle 13 for determining its air blowing direction. The nozzles 13 are directed slightly downwardly outwardly with respect to the central axis of the tunnel 1.
  • the contaminated air in the driveway space la in the tunnel 1 is led into the dust collecting chamber 2 through the air sucking inlets 7 at the air sucking end 2a.
  • the contaminated air thus led is decontaminated with the dust collectors 3.
  • the air thus decontaminated is supplied into the driveway space la through the nozzles 13 of the air blowers 4.
  • the decontaminated air blown through the nozzles 13 forms a pair of spiral air streams in the driveway space la as indicated by the broken lines in Fig. 1.
  • the decontaminated air supplied through the nozzles mixes with the contaminated air in the driveway space la in a short time while winding the latter. It has been confirmed through experiments that the distance required for the decontaminated air to mixed with the contaminated air in the driveway space is shorter about 10% than in the conventional tunnel dust collecting system.
  • the tunnel dust collecting system of the invention has the following effects or merits:
  • the nozzle is connected to the air outlet of each of the air blowers in such a manner that the decontaminated air is blown downwardly outwardly with respect to the central axis of the tunnel.
  • the distance is reduced which is required for the decontaminated air supplied from the dust collector to mix the contaminated air in the tunnel, and accordingly the number of dust collecting systems per unitary length of a tunnel can be increased as much.
  • the tunnel dust collecting system of the invention even a tunnel high in air contamination can be sufficiently ventilated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Ventilation (AREA)
  • Electrostatic Separation (AREA)

Description

    BACKGROUND OF THE INVENTION (Field of the Invention)
  • This invention relates to a tunnel dust collecting system according to the preamble of the claim. In such a system, an electrical dust collector is used to remove dust and smoke from the contaminated air in a tunnel thereby to use the air again. The tunnel dust collecting system is installed on the ceiling of a tunnel which is provided mainly for automobiles.
    • (Prior Art)
  • A tunnel dust collecting system according to the preamble of claim 1 is known from JP-A-63-319072.
  • There are available a variety of tunnel dust collecting systems. Typical ones of the systems, are a tunnel dust collecting system of bypass tunnel type as shown in Fig. 2 (A), and a tunnel dust collecting system of ceiling installation type as shown in Fig. 2(B) and Figs. 3(A) and 3(B). Figs. 3(A) and 3(B) are a plan view and a sectional view of the tunnel dust collecting system shown in Fig. 2(B).
  • In the tunnel dust collecting system of bypass tunnel type as shown in Fig. 2(A), a bypass tunnel is connected, as a dust collecting chamber 2, to the main tunnel 1 provided for automobiles, so that the air contaminated in the tunnel 1 is led into the dust collecting chamber at one end opened in the side wall of the main tunnel 1, where it is decontaminated with an electrical dust collector 3 (hereinafter referred to merely as "a dust collector 3", when applicable). The air thus processed is supplied into the main tunnel 1 with an air blower 4 through the other end of the dust collecting chamber 2.
  • On the other hand, in the tunnel dust collecting system of ceiling installation type, a ceiling board 5 is installed in such a manner as to form a dust collecting chamber 2 in the upper portion of a tunnel. The dust collecting chamber 2 has one end 2a which is used to suck air from the tunnel (hereinafter referred to as "an air sucking end 2a", when applicable), and the other end 2b which is used to supply decontaminated air into the tunnel (hereinafter referred to as "an air supplying end 2b", when applicable). The contaminated air sucked into the dust collecting chamber 2 through the air sucking end 2a is decontaminated with dust collectors 3, and the air thus decontaminated is supplied into the tunnel with air blowers 4 provided near the air supplying end 2b. When compared with the tunnel dust collecting system of bypass tunnel type, the tunnel dust collecting system of ceiling installation type is advantageous in that its installation cost is lower because it is unnecessary to form the bypass tunnel.
  • In the tunnel dust collecting system of ceiling installation type, as shown in Fig. 3, two dust collectors 3 are provided in the dust collecting chamber 2 in such a manner that they are separated from each other with a partition board 6. More specifically, the dust collecting chamber is divided by the partition board 6 into two parts,in which the two dust collectors are provided, respectively. Two axial flow type air blowers 4 with cylindrical casings 4b are provided at the air supplying end 2b of the dust collecting chamber 2, and air sucking inlets 7 are provided at the air sucking end of the dust collecting chamber 2. The air in the upper portion of the tunnel is sucked through the air sucking inlets 7 linearly along the central axis of the tunnel into the dust collecting chamber and decontaminated with the dust collectors 3, and the air thus decontaminated is linearly supplied into the tunnel with the air blowers 4 through air supplying outlets 4a.
  • The ceiling board 5 serves as a base board which supports the dust collectors 3 etc. Generally, the ceiling board 5 is extended to the air supplying outlets 4a of the air blowers 4, being utilized as means for making access to the air blowers for inspection or maintenance.
  • In the case of Fig. 3, only two dust collectors 3 are provided. However, in the case where more than two dust collectors are employed, they are arranged staggered in the dust collecting chambers from the air sucking end 2a towards the air supplying end 2b.
  • The above-described conventional tunnel dust collecting system of ceiling installation type is disadvantageous in the following points lowering its dust collection efficiency. I n the conventional tunnel dust collecting system, as shown in Fig. 3, the air decontaminated by the dust collectors 3 is blown along the central axis of the tunnel 1 into the upper portion of the latter as it is. Therefore, when compared with the tunnel dust collecting system of bypass tunnel type, the decontaminated air is difficult to mix with the contaminated air in the driveway space la of the tunnel 1. In general, in order to completely mix the decontaminated air with the contaminated air, there must be a distance of about 100 m. That is, the interval of installation of the dust collecting systems is limited. Therefore, the conventional system cannot decontaminate air sufficiently in the area where the engine load of an automobile is increased to increase the contamination of air as in an up- grade driveway of an undersea tunnel. The interval of installation of dust collecting systems is determined with the distance taken into consideration with which decontaminated air is completely mixed with contaminated air.
  • In the conventional tunnel dust collecting system, the ceiling board 5 is provided below the air blowers 4. Therefore, as shown in Fig. 3(B), the stream of air blown by the air blowers 4 is not smoothly met with the stream of air around it, thus forming eddies 12. As a result, energy loss is caused, and accordingly it is necessary to use high electric power to supply decontaminated air at a predetermined flow rate.
  • On the other hand, the space for installation of a dust collecting system is limited because of limitations in public engineering works. It is desirable to increase the flow rate of decontaminated air as much as possible with the installation space per station decreased as much as possible.
    • SUMMARY OF THE INVENTION
  • Accordingly, a general object of this invention is to provide a tunnel dust collecting system in which these difficulties are eliminated, thereby to improve the cleanliness of the air in a tunnel. This will be described in more detail.
  • In particular, an object of this invention is to provide a tunnel dust collecting system with which the distance required for mixing decontaminated air with contaminated air is decreased, so that the number of dust collecting systems per unitary length of a tunnel is increased, whereby the air decontamination degree in the tunnel is improved.
  • The foregoing object of the invention has been achieved by a tunnel dust collecting system comprising the features set out in the claim.
  • In the system, generally, two air blowers are used. In this case, it is preferable that the air blowing direction forms an cubical angle of 5 to 12° with the central axis of the tunnel.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • In the accompanying drawings:
  • Figs. 1(A) and 1(B) are a plan view and a longitudinal sectional view, respectively, showing a tunnel dust collecting system according to a first aspect of this invention;
  • Fig. 1(C) is a cross sectional view taken along line C-C in Fig. 1(B);
  • Fig. 2(A) is a perspective view showing a typical example of a conventional tunnel dust collecting system of bypass tunnel type;
  • Fig. 2(B) is a perspective view showing an example of a conventional tunnel dust collecting system of ceiling installation type; and
  • Figs. 3(A) and 3(B) is a plan view and a longitudinal sectional view of the tunnel dust collecting system of ceiling installation type shown in Fig. 2(B), respectively.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • In the tunnel dust collecting system according to the invention, the decontaminated air blowing direction of the air blowers are set slightly downwardly outwardly with respect to the central axis of the tunnel so as to form spiral air streams in the tunnel thereby to quickly mix the decontaminated air with the contaminated air in the tunnel.
  • An embodiment of the invention, a tunnel dust collecting system, will be described with reference to Figs. 1(A) through 1(C).
  • As shown in Fig. 1, a ceiling board 5 having a predetermined length is installed in a tunnel 1 to form a dust collecting chamber 2 in the upper portion of the tunnel. In the figure, the left end of the dust collecting chamber 2 is an air sucking end 2a, and the right end is an air supplying end 2b. Two dust collectors 3 are arranged along the right and left side walls of the dust collecting chamber 2, respectively, in such a manner that they are positioned staggered in the dust collecting chamber 2, or they are arranged as if overlapped as viewed from the air sucking end of the dust collecting chamber. The dust collecting chamber 2 is separated into two right and left air flow chambers with a partition wall 6 extended along the central axis of the dust collecting chamber 2 in such a manner that the right and left air flow chambers have the two dust collectors 3, respectively. Two axial-flow type air blowers 4 are connected to the right and left air flow chambers at the air supplying end. Each of the air blowers 4 comprises a cylindrical casing, and an impeller and a drive motor which are built in the casing. Each of the air blowers 4 has an air supplying outlet 4a with a nozzle 13 for determining its air blowing direction. The nozzles 13 are directed slightly downwardly outwardly with respect to the central axis of the tunnel 1.
  • When the tunnel dust collecting system thus constructed is operated, the contaminated air in the driveway space la in the tunnel 1 is led into the dust collecting chamber 2 through the air sucking inlets 7 at the air sucking end 2a. The contaminated air thus led is decontaminated with the dust collectors 3. The air thus decontaminated is supplied into the driveway space la through the nozzles 13 of the air blowers 4. In this operation, since the nozzles are directed downwardly outwardly with respect to the central line of the tunnel 1 as was described before, the decontaminated air blown through the nozzles 13 forms a pair of spiral air streams in the driveway space la as indicated by the broken lines in Fig. 1. As a result, the decontaminated air supplied through the nozzles mixes with the contaminated air in the driveway space la in a short time while winding the latter. It has been confirmed through experiments that the distance required for the decontaminated air to mixed with the contaminated air in the driveway space is shorter about 10% than in the conventional tunnel dust collecting system.
  • As is apparent from the above description, the tunnel dust collecting system of the invention has the following effects or merits:
  • According to the invention, the nozzle is connected to the air outlet of each of the air blowers in such a manner that the decontaminated air is blown downwardly outwardly with respect to the central axis of the tunnel. As a result, the distance is reduced which is required for the decontaminated air supplied from the dust collector to mix the contaminated air in the tunnel, and accordingly the number of dust collecting systems per unitary length of a tunnel can be increased as much. Thus, with the tunnel dust collecting system of the invention, even a tunnel high in air contamination can be sufficiently ventilated.

Claims (1)

  1. A tunnel dust collecting system comprising:
    a dust collecting chamber (2) formed in the upper space of a tunnel (1) with a ceiling board (5) in such a manner that said dust collecting chamber has one end serving as an air sucking end (2a) and the other end serving as an air supplying end (2b);
    electric dust collectors (3) arranged in said dust collecting chamber (2), and air blowers (4) in said dust collecting chamber (2) at the air supplying end (2b); and
    air discharge directing means directing the decontaminated air slightly downwardly and outwardly with respect to the central axis of said tunnel,
    characterized in that
    the said discharge directing means is a nozzle (13) connected to the air outlet (4a) the nozzle (13) being directed slightly downward and outward with respect to the central axis of the said tunnel.
EP95107725A 1989-07-26 1990-07-25 Tunnel dust collecting system Expired - Lifetime EP0675263B1 (en)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
JP19352389 1989-07-26
JP193523/89 1989-07-26
JP19352389 1989-07-26
JP21775189 1989-08-24
JP21776089 1989-08-24
JP217751/89 1989-08-24
JP21776089 1989-08-24
JP21775389 1989-08-24
JP217753/89 1989-08-24
JP21775189 1989-08-24
JP217760/89 1989-08-24
JP21775389 1989-08-24
EP90114281A EP0410428B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP90114281.0 Division 1990-07-25
EP90114281A Division EP0410428B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system

Publications (2)

Publication Number Publication Date
EP0675263A1 EP0675263A1 (en) 1995-10-04
EP0675263B1 true EP0675263B1 (en) 1999-12-01

Family

ID=27475654

Family Applications (4)

Application Number Title Priority Date Filing Date
EP90114281A Expired - Lifetime EP0410428B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system
EP95107725A Expired - Lifetime EP0675263B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system
EP93112603A Expired - Lifetime EP0577153B1 (en) 1989-07-26 1990-07-25 Aerodynamic air intake opening of a tunnel ventilation unit
EP94106613A Expired - Lifetime EP0613994B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP90114281A Expired - Lifetime EP0410428B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP93112603A Expired - Lifetime EP0577153B1 (en) 1989-07-26 1990-07-25 Aerodynamic air intake opening of a tunnel ventilation unit
EP94106613A Expired - Lifetime EP0613994B1 (en) 1989-07-26 1990-07-25 Tunnel dust collecting system

Country Status (2)

Country Link
EP (4) EP0410428B1 (en)
DE (4) DE69031600T2 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9416975D0 (en) * 1994-08-23 1994-10-12 South Bank Univ Entpr Ltd Air moving system
US6224796B1 (en) 1998-08-19 2001-05-01 CENTRE DE RECHERCHE INDUSTRIELLE DU QUéBEC Process for producing batches of rubber-based composition
WO2001009484A2 (en) * 1999-08-02 2001-02-08 Rosenbauer International Aktiengesellschaft Device and methods for combating accidents in a tunnel
EP1081331B1 (en) * 1999-09-02 2004-08-11 Rud. Otto Meyer GmbH & Co. KG Method and suction system for ventilation, i.e. smoke suction in tunnels
DE10136097C2 (en) * 2001-06-13 2003-10-16 Thyssenkrupp Hiserv Gmbh Suction device for a tunnel
EP1329588A1 (en) * 2002-01-17 2003-07-23 Alexander Fasnacht Device for introducing breathing air in a tunnel passageway
DE102009054031A1 (en) * 2009-11-20 2011-05-26 Wu, Fu-Chi, Northridge High performance air purifying device has housing and air duct arranged in housing, positively charged dust collector arranged in air duct and electric blower
CN102125787B (en) * 2010-01-19 2013-04-10 哈尔滨辰能工大环保科技股份有限公司 Runoff long-bag low-pressure pulse bag type dust collector
CN101906986A (en) * 2010-07-09 2010-12-08 胜利油田胜利动力机械集团有限公司 Method for distributing intake airflow and exhaust airflow of coal mine methane device
CN102080558B (en) * 2010-11-08 2013-01-02 上海市城市建设设计研究院 Purification and exhaust method for road tunnel without air shaft
CN104071241B (en) * 2014-05-27 2016-06-29 浙江大学 A kind of traffic tunnel air dedusting car and dust collection method thereof
CN104475252B (en) * 2014-12-04 2018-03-02 佛山市科蓝环保科技股份有限公司 A kind of tunnel air cleaning equipment
CN104948216B (en) * 2015-06-04 2017-06-16 浙江海洋学院 A kind of tunnel dual-purpose grid of draining air draft
CN106761890B (en) * 2017-01-11 2018-11-20 中国矿业大学 A kind of constructing tunnel dedusting smoke abatement secondary ventilation device
KR20200003792A (en) * 2017-05-04 2020-01-10 모젠 엘티디 Optimized tunnel ventilation
CN108979697B (en) * 2018-08-09 2019-10-25 湖南科技大学 The air-supply vertical shaft fresh-air volume reduction coefficient calculation method of tunnel open circulation ventilation
CN110159336A (en) * 2019-05-22 2019-08-23 中煤科工集团重庆研究院有限公司 A kind of exclusion device suitable for deduster
CN111520179B (en) * 2020-05-19 2021-11-16 安徽宝龙电器有限公司 Mining intrinsic safety smoke control device
CN116025406B (en) * 2023-02-21 2024-01-02 中南大学 Tunnel dust removal system and dust removal method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1226629A (en) * 1959-02-25 1960-07-13 Neu Sa Method and device for ventilating a railway and road tunnel
DE1459883C3 (en) * 1963-03-26 1974-05-02 J.M. Voith Gmbh, 7920 Heidenheim Device for longitudinal ventilation of a tunnel
CH433424A (en) * 1964-06-09 1967-04-15 Shb Installations Projekt Ag Ventilation device in road tunnel
AT308807B (en) * 1968-01-15 1973-06-15 Sina In Nat Autostradali SYSTEM FOR LONGITUDINAL VENTILATION OF A SINGLE-LINE TUNNEL
FR2253877A1 (en) * 1973-12-05 1975-07-04 Sofrair Pressure fed air ventilation for road tunnel - directs air tangentially down side wall from roof inlets
DE2509279A1 (en) * 1975-03-04 1976-09-16 Voith Getriebe Kg Ventilation equipment for covered roads - has axial flow intake fans supplying fresh sir to road covering
DE3608308C1 (en) * 1986-03-13 1987-01-08 Turbo Lufttechnik Gmbh Device for ventilation of a tunnel
JPH0754080B2 (en) * 1987-06-23 1995-06-07 富士電機株式会社 Dust collection equipment for road tunnels

Also Published As

Publication number Publication date
DE69029277T2 (en) 1997-03-27
EP0410428A2 (en) 1991-01-30
DE69031600D1 (en) 1997-11-20
DE69028818D1 (en) 1996-11-14
DE69033378T2 (en) 2000-04-06
DE69029277D1 (en) 1997-01-09
DE69031600T2 (en) 1998-02-12
EP0613994A1 (en) 1994-09-07
EP0675263A1 (en) 1995-10-04
EP0613994B1 (en) 1997-10-15
EP0577153A1 (en) 1994-01-05
DE69033378D1 (en) 2000-01-05
EP0410428A3 (en) 1991-08-28
EP0577153B1 (en) 1996-11-27
EP0410428B1 (en) 1996-10-09
DE69028818T2 (en) 1997-02-13

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