JPH04156964A - Dust collector for tunnel - Google Patents
Dust collector for tunnelInfo
- Publication number
- JPH04156964A JPH04156964A JP2279782A JP27978290A JPH04156964A JP H04156964 A JPH04156964 A JP H04156964A JP 2279782 A JP2279782 A JP 2279782A JP 27978290 A JP27978290 A JP 27978290A JP H04156964 A JPH04156964 A JP H04156964A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- blower
- dust collection
- air
- dust collecting
- 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.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 44
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 15
- 238000009423 ventilation Methods 0.000 abstract description 22
- 238000005192 partition Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000012716 precipitator Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
ｒ産業上の利用分野】
この発明は、主として自動車道トンネル内の汚染空気を
清浄化するトンネル集じん装置に関し、更に詳しくは集
じん室内の通風方向を正逆双方向に切り換えられるよう
にしたトンネル集じん装置に関する。rIndustrial Application Field This invention mainly relates to a tunnel dust collection device for purifying contaminated air in an expressway tunnel, and more specifically to a tunnel dust collection device in which the ventilation direction in the dust collection chamber can be switched between forward and reverse directions. Regarding dust collection equipment.
上記トンネル集じん装置には代表的なものとして、第６
図に示すバイパストンネル方式（以下、バイパス形とい
う）と、第７図に示す天井設置方式（以下、天井形とい
う）とがある。
第６図のバイパス形はトンネル１の側壁部に両端が開口
するバイパスすい道を設けて集じん室２とし、この集じ
ん室２に送風８１３と電気集じん機４とを設置したもの
である。送風機３により集じん室一端の吸込口５から吸
い込まれたトンネル内の汚染空気は、電気集じん機４で
煤じんを除去され、他端の吹出口６からトンネル内に吹
き出される。
図示の場合、電気集じん機４は、垂直な隔壁７で仕切ら
れた集じん室２の吸込側の左右各室に１基ずつ設置され
、また送風機３は、電気集じん機４の後方で立ち上がり
吹出口５まで延びる水平な隔壁８で仕切られた集じん室
４の上部空間の吹出側に左右に並べて２基設置されてい
る。吹出口６には吹き出された清浄空気をトンネル１の
長手方向に向ける同形断面の出口ノズル９が取り付けら
れ、その曲がり部分にはコーナーヘーン１０が設けられ
ている。なお、隔壁８の下部空間は補機や電気品の収納
に利用されている。
一方、第７図の天井形はトンネル１の上部空間を天井板
１１で区画して一端を吸込口５、他端を吹出口６とする
集じん室２を形成し、この集じん室２に送風機３及び電
気集じん機４を設置したものである。天井形の場合も、
集しん室２の吸込側が隔壁７で左右に仕切られて各室に
電気集しん機４が１基ずつ設置され、吹出側には２基の
送風機が左右に並べて設置されている。送風機３により
トンネル１の長手方向に沿って吸込口５から吸い込まれ
た汚染空気は、電気集しん機４で清浄化され、吹出口６
からそのまま吹き出される。天井形はバイパスすい道を
掘削する必要がないので、バイパス形に比べて土木コス
トが安いという利点がある。As a typical example of the above-mentioned tunnel dust collector, the 6th
There is a bypass tunnel method shown in the figure (hereinafter referred to as bypass type) and a ceiling installation method shown in FIG. 7 (hereinafter referred to as ceiling type). In the bypass type shown in Fig. 6, a bypass passage with openings at both ends is provided in the side wall of the tunnel 1 to form a dust collection chamber 2, and an air blower 813 and an electrostatic precipitator 4 are installed in this dust collection chamber 2. . Contaminated air in the tunnel is sucked in by the blower 3 from the suction port 5 at one end of the dust collection chamber, has soot and dust removed by the electrostatic precipitator 4, and is blown out into the tunnel from the air outlet 6 at the other end. In the illustrated case, one electrostatic precipitator 4 is installed in each of the left and right chambers on the suction side of the dust collection chamber 2, which is partitioned by a vertical partition wall 7, and the blower 3 is installed behind the electrostatic precipitator 4. Two units are installed side by side on the blowout side of the upper space of the dust collection chamber 4, which is partitioned by a horizontal partition wall 8 extending to the rising blowout port 5. An outlet nozzle 9 having the same cross section that directs the blown clean air in the longitudinal direction of the tunnel 1 is attached to the outlet 6, and a corner hone 10 is provided at the bent portion of the outlet nozzle 9. Note that the space below the partition wall 8 is used for storing auxiliary equipment and electrical components. On the other hand, in the ceiling shape shown in FIG. 7, the upper space of the tunnel 1 is divided by a ceiling plate 11 to form a dust collection chamber 2 with an inlet 5 at one end and an outlet 6 at the other end. A blower 3 and an electrostatic precipitator 4 are installed. Even in the case of ceiling type,
The suction side of the collection chamber 2 is partitioned left and right by a partition wall 7, and one electric condenser 4 is installed in each chamber, and two blowers are installed side by side on the outlet side. Contaminated air sucked in from the suction port 5 along the longitudinal direction of the tunnel 1 by the blower 3 is purified by the electric concentrator 4 and then sent to the air outlet 6.
It is blown out as it is. The ceiling type has the advantage of lower civil engineering costs than the bypass type, since it is not necessary to excavate a bypass channel.
ところで、このようなトンネル集しん装置が設備された
トンネルにおいても、これによりトン１ル内空気の再利
用を図る一方で、適宜の間隔でトンネルの天井位置にジ
ェットファンを設置し、更にトンネル上部の立坑に立坑
送風機を設置するなどしてトンネル内に一方向に向かう
空気の流れを作り、トン名ル外の新鮮空気を導入するよ
うにしている。そのため、従来のトン名ル集しん装置は
上記空気の流れに沿って、特定の一方向にのみ通風する
ようにしていた。
ところが、近時、トンネル集しん装置の性能が向上する
に従い、外部の新鮮空気を取り入れなくても空気の清浄
化、再利用だけでトンネル内空気の汚染に対応できるよ
うになり、特に強力な換気手段であった立坑送風機を省
略できるようになってきた。そのような場合、ジェット
ファンだけで強制的にトンネル内に一方向の空気の流れ
を作り出すよりも、更に進めて、外部の自然風やトンネ
ル内の交通の状況などによってトンネル内の空気の流れ
が自由に変化するようにしておき、その流れの方向に合
わせて集しん装置の通風方向も切り換えるようにすれば
、集じん装置のランニングコストを安くすることができ
る。
また、トンネル交通の制御技術の進歩に伴い、複数の一
方向トンネルを交通量に応して交通方向を切り換えて運
用することが可能となってきた。
その場合に、これまでの一方向通風の集じん装置では通
りに対応できないという問題がある。
この発明は、このような状況に鑑みてなされたもので、
トンネル内空気の流れに応して効率的に汚染空気を清浄
化できるようにしたトンネル集しん装置を提供すること
を目的とするものである。By the way, even in tunnels equipped with such tunnel collection equipment, while attempting to reuse the air inside each ton, jet fans are installed at appropriate intervals at the ceiling of the tunnel, and further A shaft blower is installed in the shaft of the tunnel to create a unidirectional flow of air inside the tunnel, and fresh air from outside the tunnel is introduced. For this reason, conventional tunnel dust collectors only allow ventilation in one specific direction along the above-mentioned air flow. However, as the performance of tunnel filtration equipment has improved in recent years, it has become possible to deal with contamination of the air inside the tunnel simply by purifying and reusing the air without having to take in fresh air from outside. It has become possible to omit the vertical shaft blower that used to be a method. In such cases, rather than forcibly creating a unidirectional air flow inside the tunnel using just a jet fan, we can go further and create a system where the air flow inside the tunnel is controlled by external natural wind or traffic conditions inside the tunnel. By allowing the flow to change freely and changing the ventilation direction of the dust collector according to the direction of the flow, the running cost of the dust collector can be reduced. Furthermore, with advances in tunnel traffic control technology, it has become possible to operate multiple one-way tunnels by switching the traffic direction depending on the traffic volume. In this case, there is a problem that the conventional one-way ventilation dust collectors cannot handle the street. This invention was made in view of this situation,
It is an object of the present invention to provide a tunnel dust collection device that can efficiently purify contaminated air according to the flow of air in the tunnel.
この発明は、集しん装置の通風方向を任意に切り換えら
れるようにするものである。すなわち、この発明におい
ては、集しん室を正逆双方向に通風可能に構成し、かつ
送風機を正逆運転可能とするとともに、電気集じん機の
集じん部の前後に帯電部を設け、これらの帯電部を前記
送風機の運転方向に応じて切り換えて使うようにする。This invention enables the ventilation direction of a collection device to be switched arbitrarily. That is, in this invention, the collection chamber is configured to allow ventilation in both forward and reverse directions, and the blower can be operated in forward and reverse directions, and charged parts are provided before and after the dust collection part of the electrostatic precipitator, and these The charging section is switched and used depending on the operating direction of the blower.
外部の自然風や交通の状況変化により、あるいは一方向
トンネルの交通方向の切換により、トンネル内の空気の
流れの方向が逆になった場合に、その方向に合わセて集
しん装置の吸込、吹出方向を切り換えて運転する。
従来の集じん装置は一方向通風を前提としているため、
そのままでは逆方向の通風損失が大きくなる。したがっ
て、吸込口あるいは吹出口となる集しん室両端の形状を
揃えるなど、方向により通風特性に差が生しないように
通風経路の形状を定める。送風機は当然正逆運転可能で
、運転方向により風量に大きな差がないものを採用する
。また、電気集しん機は集じん部の前後に帯電部を設け
、通風方向により上流側の帯電部にのみ電圧を印加する
ようにする。When the direction of air flow inside the tunnel is reversed due to changes in external natural wind or traffic conditions, or due to a change in traffic direction in a one-way tunnel, the suction of the collection device is adjusted to match that direction. Operate by switching the blowing direction. Conventional dust collectors assume one-way ventilation, so
If left as is, the ventilation loss in the opposite direction will increase. Therefore, the shape of the ventilation path is determined so that there will be no difference in ventilation characteristics depending on the direction, such as by aligning the shapes of both ends of the collection chamber, which will serve as the suction inlet or the outlet. The blower should naturally be capable of forward and reverse operation, and should not have a large difference in air volume depending on the direction of operation. Further, the electric precipitator is provided with charging parts before and after the dust collection part, and voltage is applied only to the charging part on the upstream side depending on the ventilation direction.
以下、図に基づいて自動車道トンネルに用いる集じん装
置について、この発明の詳細な説明する。なお、各図に
おいて従来例と対応する部分には同一の符号を用いるも
のとする。
まず、第１図はバイパス形の集しん装置における実施例
を示すものである。図において、従来例と相違する点は
、まずできるだけ通風特性の正逆対称性が得られるよう
に送風機３は集じん室２の中央湾曲部に配置されるとと
もに、隔壁８は送風機３の反電気集しん機側で直ちに立
ち下げられ、それに続いてコーナーヘーン１２が吹出・
吸込口６まで設けられていることである。それに伴い、
従来の出口ノズル９及びコーナーヘーン−１０ば省かれ
、吹出・吸込口６は集しん室２の全断面にわたって開口
している。また、吹出・吸込口５と６との間の通風路の
図示しない細部についても、双方向の通風特性がほぼ同
じになるように配慮されている。
送風機３は第３図に示すように、円筒ケーシング１３内
にモータ１４に直結された羽根車１５が収納され、案内
羽根１６が設けられた１段軸流式送風機が用いられてい
るが、羽根車１５が第４図（Ａ）に示すような左右対称
翼１７を持つ場合には、単にモータ１４の正逆回転だけ
で通風方向が切り換えられる。ここで、実線矢印は正回
転及び正方向通風を示し、破線矢印は逆回転及び逆方向
通風を示している。また、第４図（Ｂ）に示すように、
羽根車１５が非対称翼１８を持つ場合には、回転方向に
応じて翼１８を１８０度反軸反転る。
この反転はハブ１９に内蔵された空気圧あるいはモータ
駆動の反転機構により行われる。
電気集しん機４では、帯電部て煤しん粒子に荷電させ、
次いでこの荷電粒子を集しん部で吸着して集じんするが
、第１図の電気集しん機４は双方向の流れに対して集じ
んを可能とするために、第５図に示すように、集じん部
２００前後にそれぞれ帯電部２１及び２２が配置されて
いる。集じん部２０の電極２Ｏａ間には例えば５．５Ｋ
Ｖの直流電圧が印加され、帯電部２１及び２２の電極２
１ａあるいは２２ａにはそれぞれＩＩＫＶの直流電圧が
印加されるが、帯電部２１及び２２は通風方向の応して
集じん部２０の上流側のもののみが切り換えて使用され
る。
このような第１図の集じん装置において、集しん室２内
の通風方向は送風機３の正逆転によりトンネル１内の空
気の流れに応じて随時切り換えられ、吸込兼吹出口５及
び６のいずれか一方から吸い込まれた汚染空気（図の黒
矢印）は、電気集しん機４で煤じんを除去されて吸込兼
吹出口５及び６の他方から清浄空気（図の白矢印）とし
て吹き出される。
次に第２図は天井形におけるこの発明の実施例を示すも
のである。この実施例においても、送風機３は第３図に
示すような正逆運転可能なもの用いられ、また第５図に
示すように電気集じん機４は集じん部２０の前後に帯電
部２１及び２２が配置されているが、更に送風機３のケ
ーシング１３に接続された従来での吹出側の拡り管２３
は、図示の通り従来のものより大形になっている。これ
は開口を大きくして図の右の吸込・吹出口６がらの吸い
込みを容易にする一方、逆に吸込・吹出口６から吹き出
す場合に送風機３から吸込・吹出口６に至る通風路の拡
りを大きくして風速を下げるためである。ちなみに、吸
込・吹出口５から吹き出す場合は送風機３から吸込・吹
出口５までの間に電気集じん機４の設置空間があり、こ
の空間で風速が下げられる。拡り管２３はそれとのバラ
ンスをとっている。その他、吹出・吸込口５と６との間
の通風路の図示しない細部について、第１図の実施例と
同様に双方向の通風特性がほぼ同じになるように配慮さ
れている。
このような第２図の集しん装置においても、吸込兼吹出
口５及び６のいずれか一方から吸い込まれた汚染空気（
図の黒矢印）は、電気集じん機４で煤じんを除去されて
吸込兼吹出口５及び６の他方から浄化空気（図の白矢印
）として吹き出される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings regarding a dust collection device used in an expressway tunnel. In each figure, the same reference numerals are used for parts corresponding to those in the conventional example. First, FIG. 1 shows an embodiment of a bypass type collection device. In the figure, the difference from the conventional example is that the blower 3 is placed in the central curved part of the dust collection chamber 2 in order to obtain as much forward-reverse symmetry as possible in the ventilation characteristics, and the partition wall 8 is placed in the opposite direction of the blower 3. It is immediately lowered on the collector side, and then the corner hone 12 blows out.
It is provided up to the suction port 6. with this,
The conventional outlet nozzle 9 and corner horn 10 are omitted, and the outlet/suction port 6 is open over the entire cross section of the collection chamber 2. Further, the details (not shown) of the ventilation path between the air outlet/intake ports 5 and 6 are also taken into consideration so that the ventilation characteristics in both directions are almost the same. As shown in FIG. 3, the blower 3 is a one-stage axial flow blower in which an impeller 15 directly connected to a motor 14 is housed in a cylindrical casing 13, and guide vanes 16 are provided. When the car 15 has bilaterally symmetrical wings 17 as shown in FIG. 4(A), the ventilation direction can be switched simply by rotating the motor 14 in the forward and reverse directions. Here, solid arrows indicate forward rotation and forward ventilation, and broken arrows indicate reverse rotation and reverse ventilation. Moreover, as shown in FIG. 4(B),
When the impeller 15 has asymmetric blades 18, the blades 18 are rotated 180 degrees counter-axially depending on the direction of rotation. This reversal is performed by a pneumatic or motor-driven reversing mechanism built into the hub 19. In the electrostatic precipitator 4, the soot particles are charged by the charging section,
Next, these charged particles are adsorbed and collected in a collecting section, but the electric precipitator 4 shown in FIG. 1 is configured as shown in FIG. , charging units 21 and 22 are arranged before and after the dust collecting unit 200, respectively. For example, 5.5K is applied between the electrodes 2Oa of the dust collection section 20.
A DC voltage of V is applied to the electrodes 2 of the charging parts 21 and 22.
A DC voltage of IIKV is applied to each of 1a and 22a, but only the charging parts 21 and 22 on the upstream side of the dust collection part 20 are switched and used depending on the ventilation direction. In such a dust collection device shown in FIG. The contaminated air sucked in from one side (black arrow in the figure) is removed with soot and dust by the electric precipitator 4, and is blown out as clean air (white arrow in the figure) from the other of the suction/outlet ports 5 and 6. . Next, FIG. 2 shows an embodiment of the present invention in a ceiling type. In this embodiment as well, the blower 3 is capable of forward and reverse operation as shown in FIG. 3, and as shown in FIG. 22 is arranged, and in addition, a conventional expansion pipe 23 on the blowing side connected to the casing 13 of the blower 3 is installed.
As shown in the figure, it is larger than the conventional one. This makes the opening larger to facilitate suction from the suction/outlet 6 on the right side of the figure, while conversely, when blowing from the suction/outlet 6, the ventilation path from the blower 3 to the suction/outlet 6 is expanded. This is to increase the wind speed and reduce the wind speed. Incidentally, when blowing air from the suction/outlet 5, there is a space for installing the electrostatic precipitator 4 between the blower 3 and the suction/outlet 5, and the wind speed is reduced in this space. The expansion tube 23 balances this. In addition, with respect to the details (not shown) of the ventilation passage between the air outlet and suction ports 5 and 6, consideration is given so that the ventilation characteristics in both directions are almost the same as in the embodiment shown in FIG. Even in such a collection device as shown in FIG. 2, contaminated air (
The soot and dust are removed by the electrostatic precipitator 4 (black arrow in the figure), and purified air (white arrow in the figure) is blown out from the other of the suction/outlet ports 5 and 6.
Claims (1)
風機と電気集じん機とが設置され、前記送風機により前
記集じん室の一端から吸い込んだ前記トンネル内の汚染
空気を前記電気集じん機を通して清浄化し、前記集じん
室の他端から再び前記トンネル内に吹き出すトンネル集
じん装置において、集じん室を正逆双方向に通風可能に
構成し、かつ送風機を正逆運転可能とするとともに、電
気集じん機の集じん部の前後に相互に切り換え可能な帯
電部を設けことを特徴とするトンネル集じん装置。1) A blower and an electrostatic precipitator are installed in a duct-shaped dust collection chamber whose both ends communicate with the inside of the tunnel, and the electrostatic precipitator sucks contaminated air inside the tunnel from one end of the dust collection chamber by the blower. In a tunnel dust collection device that cleans the dust through the tunnel and blows it out into the tunnel from the other end of the dust collection chamber, the dust collection chamber is configured to be able to ventilate in both forward and reverse directions, and the blower is capable of being operated in the forward and reverse directions. A tunnel dust collection device characterized by providing a charging section that can be switched between before and after a dust collection section of an electrostatic precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2279782A JPH04156964A (en) | 1990-10-18 | 1990-10-18 | Dust collector for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2279782A JPH04156964A (en) | 1990-10-18 | 1990-10-18 | Dust collector for tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04156964A true JPH04156964A (en) | 1992-05-29 |
Family
ID=17615845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2279782A Pending JPH04156964A (en) | 1990-10-18 | 1990-10-18 | Dust collector for tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04156964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008503343A (en) * | 2004-06-23 | 2008-02-07 | ゲイル，ロジャー | Electrostatic filter for tunnel fan |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180653A (en) * | 1988-12-29 | 1990-07-13 | Fuji Electric Co Ltd | Electric dust collector for tunnel of exclusive motor-vehicle way |
-
1990
- 1990-10-18 JP JP2279782A patent/JPH04156964A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180653A (en) * | 1988-12-29 | 1990-07-13 | Fuji Electric Co Ltd | Electric dust collector for tunnel of exclusive motor-vehicle way |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008503343A (en) * | 2004-06-23 | 2008-02-07 | ゲイル，ロジャー | Electrostatic filter for tunnel fan |
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