WO2017069351A1 - Micro particulates removal system of subway vent - Google Patents

Micro particulates removal system of subway vent Download PDF

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Publication number
WO2017069351A1
WO2017069351A1 PCT/KR2016/002575 KR2016002575W WO2017069351A1 WO 2017069351 A1 WO2017069351 A1 WO 2017069351A1 KR 2016002575 W KR2016002575 W KR 2016002575W WO 2017069351 A1 WO2017069351 A1 WO 2017069351A1
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WO
WIPO (PCT)
Prior art keywords
dust collector
dust collection
air
room
micro particulates
Prior art date
Application number
PCT/KR2016/002575
Other languages
English (en)
French (fr)
Inventor
Seung Whan Lee
Kwang Mo Lee
Original Assignee
Royal Industrial Tech Corp.
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 Royal Industrial Tech Corp. filed Critical Royal Industrial Tech Corp.
Priority to CN201680074796.2A priority Critical patent/CN108474253B/zh
Publication of WO2017069351A1 publication Critical patent/WO2017069351A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/78—Cleaning the electrodes by washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/368—Controlling flow of gases or vapour by other than static mechanical means, e.g. internal ventilator or recycler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/80—Cleaning the electrodes by gas or solid particle blasting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/86—Electrode-carrying means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/003—Ventilation of traffic tunnels
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode has multiple serrated ends or parts

Definitions

  • the present disclosure relates to a particulate matter removal system, and more specifically relates to a particulate matter removal system which is installed at a subway vent and is formed by combining a natural ventilation method and a mechanical ventilation method using a forced ventilation and bi-directional dust collector.
  • Air pollution matter in the subway can be classified into an outdoor factor flowing through stairways and an indoor factor generated from railroads or passengers' movement or. According to a result of latest research, it is represented that a great portion of micro particulate in a subway tunnel and an underground station are generated by the indoor factor such as train operation in the tunnel.
  • the tunnel is movement path connecting stations, in which the variety of pollution matters are continuously generated by friction and abrasion between rails and wheels during the train operation, abrasion between a pantograph and a power supply facility, rail abrasion works and repair works for underground facilities.
  • the pollution matters are spread with wind gusts.
  • PSDs platform screen doors
  • particulate matter may be infiltrated into lung deeply without caught in the nose or throat such that the variety of respiratory diseases is induced.
  • PM2.5 influence the death more than PM10 and density of PM2.5 is higher indoors than outdoors.
  • micro particulates are usually accumulated by a forced ventilation facility installed at an air supply port or a ventilation port.
  • the efficiency is insignificant such that measurement frequency of which quality of indoor air are over the maintenance standard 150 ⁇ g/m3 are increased at old underground stations. Most of old stations exceed or approach to the maintenance standard 100 ⁇ g/m3 on an organic law of environment policy.
  • FIG. 1 conventional ventilation method of the underground station implied by a natural ventilation method FIGS 1a and 1b or a mechanical ventilation method FIG 1c.
  • the conventional art according to the natural ventilation method is a method of exhausting air in a tunnel using a piston effect caused by moving force of a subway train, in which an air supplying port and an air exhausting port are not distinguished, the front part of the train in a moving direction generates positive pressure to act as the air supplying port, and the rear part of the train in a moving direction in generates negative pressure to act as the air exhausting port.
  • the natural ventilation method has an advantage that air supplying/air exhausting of the ventilation port is not distinguished and an additional device is not necessary, there are disadvantages that the ventilation effect is not sustainable because the effect occurs at a moment of passing the subway train and the pressure by the piston effect is insufficient to push the contamination matter out in a deep tunnel under the central are of a town.
  • the mechanical ventilation method has been disclosed on an application No. 10-2013-0127158 'Fine Particle Reduction Equipment for Subway Tunnel' as a conventional art.
  • the conventional art according to the mechanical ventilation method has an advantage capable of supplying a planned ventilation amount regardless operation of the subway train and an advantage of emergency ventilation function, however, an initial construction cost is large and a power cost for maintenance and a maintenance cost are excessive.
  • the conventional ventilation system also has a problem that the contamination matter is not removed and continuously circulated.
  • micro particulates flow into the platform by the window pressure when a PSD automatic door installed at the platform of a station to contaminate air in the platform and the waiting room.
  • air conditioning facilities are continuously operated to repeat air cleaning processes and it is difficult to improve air quality in the platform and the waiting room because of the micro particulate generated in the main tunnel of the subway, and it is difficult to elevate efficiency of the air quality improvement and to sustain the efficient.
  • the micro particulates generated in the underground flow into the platform and the waiting room by the train gust to deteriorate the air quality of the underground station, or be discharged to atmosphere through the ventilation system of the main tunnel to increase atmosphere pollution.
  • Embodiments of the inventive concepts may provide a micro particulates removal system for removing the micro particulates generated in a main tunnel of a subway.
  • Embodiments of the inventive concepts may further provide a micro particulates removal system capable of removing the micro particulates regardless wind direction which is changed by a train.
  • Embodiments of the inventive concepts may further provide a micro particulates removal system capable of removing the micro particulates by using pressure generated at the train entering and passing.
  • Embodiments of the inventive concepts may further provide a micro particulates removal system collecting micro particulates using natural ventilation and mechanical ventilation selectively, thereby improving collection effect of the micro particulates with lower maintain cost.
  • Embodiments of the inventive concepts may further provide a micro particulates removal system capable of preventing re-scattering of the micro particulates collected by cleaning and capable of maintaining collection effect.
  • Embodiments of the inventive concept provide micro particulates removal system including: an air supplying/discharging room having a predetermined space with an entrance being connected with the ground, wherein the air supply and discharge room is a construction for ventilating and connects the ground and a main tunnel of a subway; a dust collection room having a predetermined space with an entrance being connected with the main tunnel of the subway, the dust collection room is separated with the air supplying/discharging room; an automatic damper installed between the air supplying/discharging room and the dust collection room; a forced ventilation device installed between the air supplying/discharging room and the dust collection room; a bidirectional electric dust collector collecting micro particulates in air flowed in the dust collection room from the main tunnel of the subway and flowed in the main tunnel of the subway from the dust collection room, wherein the bidirectional electric dust collector forms a bidirectional dust collection wall including a primary charging part which is installed at a front part toward the entrance of the dust collection room to charge the micro particulates in the air flowed in the
  • the bidirectional dust collector includes a fixed frame installed at the entrance of the dust collection room; and a dust collector cell including the primary charging part, the secondary charging part and the dust collection part in one body.
  • the dust collector cell may be installed at the fixed frame, and a plurality of the dust collector cells may be installed at the fixed frame to form the dust collection wall.
  • the dust collector cell may include a cell housing of which a direction of air flow is open and both sides are closed to provide an installment space; the primary and secondary charging parts installed on both sides of the cell housing in the direction of air flow, wherein the primary and secondary charging parts are respectively formed of at least one multi cross fin ionizer where a plurality of protrusions is formed as saw shape with predetermined length along longitudinal direction to charge micro particulates by corona discharge and a plurality of side protrusions is formed on both sides of the multi cross fin ionizer to generate corona discharge, and wherein the multi cross fin ionizer is connected to a high voltage power supplier; and the dust collector between the primary and the secondary charging parts, wherein the dust collector includes a dust collection electrode that grounded metal plates are installed continuously in parallel to collect charged micro particulates and a voltage plate which is installed in parallel with the multi cross fin ionizer between the metal plates of the dust collection electrode to connect with the high voltage power supplier.
  • the cell housing may be opened up and down, and may further include a guide at front part and a rear part of the open portion of the cell housing.
  • the bidirectional electric dust collector may include a primary shutter installed on a side of the dust collection room and a secondary shutter installed on the other side of the main tunnel of the subway on the basis of the bidirectional electric dust collector to open or close the space where the bidirectional electric dust collector is installed, and a primary/secondary cleaning devices installed respectively between the primary shutter and the bidirectional electric dust collector and between the secondary shutter and the bidirectional electric dust collector to spray high pressure air and cleaning solution to the primary charging part, the secondary charging part and the dust collector.
  • the primary/secondary cleaning devices may include a drain; an air pipe having a plurality of air spray nozzles; a cleaning solution pipe having a plurality of cleaning solution splay nozzles; a driver for moving the air pipe and the cleaning solution pipe up and down; and provider connected to the air pipe and the cleaning solution pipe for providing high pressure air with the air pipe and high pressure cleaning solution with the cleaning solution pipe, respectively.
  • the automatic damper may be opened and the operation of the forced ventilation device may be stopped when the train is passing the main tunnel thereby operating in the natural ventilation method, and the automatic damper may be closed and the forced ventilation device may run when the train does not pass in the main tunnel thereby operating in the mechanical ventilation method.
  • micro particulates generated in the main tunnel of the subway can be effectively removed thereby enhancing quality in the underground.
  • micro particulates can be effectively removed regardless with wind direction which is changed by the train.
  • the natural ventilation and the mechanical ventilation are selectively performed to collect micro particulates at the main line vent to achieve high efficiency of micro particulates collection with relatively lower maintenance cost.
  • micro particulates collected by cleaning are prevented from re-scattering and dust collection efficiency can be maintain at uniform level.
  • FIG. 1 is a drawing illustrating a conventional ventilating method of a subway vent
  • FIG. 2 is a schematic drawing illustrating a micro particulates removal system of a subway vent according to an embodiment
  • FIG. 3 is a schematic drawing illustrating a bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment
  • FIG. 4 is a drawing illustrating a bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment
  • FIG. 5 is a drawing illustrating a dust collector cell of the micro particulates removal system of a subway vent according to an embodiment
  • FIG. 6 is a drawing illustrating a bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment
  • FIG. 7 is a drawing illustrating a cleaning device of the micro particulates removal system of a subway vent according to an embodiment.
  • Ventilation port 2-2 Ventilation tunnel
  • Controller 510 Fixed frame
  • Dust collector cell 521 Primary charging part
  • Shutter 540 Shutter
  • Air pipe 544 Driver
  • inventive concepts will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the inventive concepts are shown.
  • the advantages and features of the inventive concepts and methods of achieving them will be apparent from the following exemplary embodiments that will be described in more detail with reference to the accompanying drawings.
  • inventive concepts are not limited to the following exemplary embodiments, and may be implemented in various forms. Accordingly, the exemplary embodiments are provided only to disclose the inventive concepts and let those skilled in the art know the category of the inventive concepts.
  • embodiments of the inventive concepts are not limited to the specific examples provided herein and are exaggerated for clarity.
  • the micro particulates removal system of a subway vent 1 may include an air supplying/discharging room 10, a dust collector 20, an automatic damper 30, a forced ventilation device 40, a bidirectional electric dust collector 50 and a controller 60.
  • the air supplying/discharging room 10 may be a construction of ventilation connecting the ground 2 and a main tunnel of the subway 3, and may have a predetermined space where an entrance 11 is formed to connect the ground 1.
  • the air supplying/discharging room 10 may be a closed space except for the entrance 11.
  • the entrance 11 may be connected with a ventilation tunnel 2-2 connecting to a ventilation port 2-1 which locates on the ground 1.
  • the air supplying/discharging room 10 may exhaust air in the air supplying/discharging room 10 to the ventilation port 2-1 on the ground through the entrance 11 and the ventilation tunnel 2-2, or inhale atmosphere air to the air supplying/discharging room 10 through the ventilation port 2-1 and the ventilation tunnel 2-2.
  • the dust collection room 20 may be adjacent and separated in space to the air supplying/discharging room 10, and may have a predetermined space where an entrance 21 connecting to the main tunnel of the subway 3.
  • the dust collection room 20 may be a construction for ventilation which connects the ground 2 and the main tunnel of the subway 3, may provide a space for removing micro particulates in air flowed from the ground 2 or the main tunnel of the subway 3 and simultaneously provide a space for providing environment by which a natural ventilation method and a mechanical ventilation method can be selected to be operated, and may formed a closed space except for the entrance 21.
  • the air supplying/discharging room 10 and the dust collection room 20 may be in contact with each other and may be selectively opened with other at a predetermined section.
  • the automatic damper 30 may be formed between the air supplying/discharging room 10 and the dust collection room 20 to spatially connect or separate the air supplying/discharging room 10 and the dust collection room 20.
  • the automatic damper 30 may be installed between the air supplying/discharging room 10 and the dust collection room 20 and at a portion spatially connected with the air supplying/discharging room 10 and the dust collection room 20 to make spaces of the air supplying/discharging room 10 and the dust collection room 20 connected or separated, as conventional flow control device which is installed at a construction for ventilation to control flowing.
  • the operation of the automatic damper 30 may be controlled by the controller thereby opening to connect the air supplying/discharging room 10 and the dust collection room 20 when the micro particulates removal system 1 is operated in the natural ventilation method and closing to separate the air supplying/discharging room 10 and the dust collection room 20 when the micro particulates removal system 1 is operated in the mechanical ventilation method.
  • the forced ventilation device 40 may be a conventional ventilation device having a plurality of fans to push air in a direction, and may be variety of devices installed at a construction for ventilation to move air, such as a jet fan or an acceleration fan generating high air supply power.
  • the forced ventilation device 40 may be installed between the air supplying/discharging room 10 and the dust collection room 20 to send air in the air supplying/discharging room 10 to the dust collection room 20, or to send air in the dust collection room 20 to the air supplying/discharging room 10.
  • the force ventilation device 40 may be controlled by the controller 60.
  • the forced ventilation device 40 may be a device operating the micro particulates removal system of the subway vent 1 in the mechanical ventilation method such that the rotation direction (forward rotation or reverse rotation) of the fan included in the forced ventilation device 40 is selected by the controller 60 to exhaust to or inhale from the air supplying/discharging room 10 according to the rotation direction.
  • the bidirectional electric dust collector 50 may be installed in front of the entrance 21 of the dust collection room 20 to form a bidirectional induced voltage dust collection wall thereby collecting micro particulates in air flowed in the dust collection room 20 from the main tunnel 3 and air flowed in the main tunnel 3 from the dust collection room 20.
  • FIG. 3 is a schematic drawing illustrating bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment.
  • the bidirectional electric dust collector may include a dust collection room side charging part (a primary charging part 51) for charging micro particulates in atmosphere air flowed in the main tunnel 3 from the dust collection room 20, a main tunnel of the subway side charging part (a secondary charging part 52) for charging micro particulates in air flowed in the dust collection room 20 from the main tunnel 3, and a dust collector 53 collecting charged micro particulates between the primary charging part 51 and the secondary charging part 52.
  • a dust collection room side charging part (a primary charging part 51) for charging micro particulates in atmosphere air flowed in the main tunnel 3 from the dust collection room 20
  • a main tunnel of the subway side charging part a secondary charging part 52 for charging micro particulates in air flowed in the dust collection room 20 from the main tunnel 3
  • a dust collector 53 collecting charged micro particulates between the primary charging part 51 and the secondary charging part 52.
  • the primary charging part 51 and secondary charging part 52 may supply 10DCKV ⁇ 12DCKV to charge the micro particulates in flowing air by supply into positive electricity and the dust collector 53 may be formed of a dust collection plate (dust collection electrode) at grounded and a voltage plate being supplied 5DCKV ⁇ 6DCKV thereby collecting the charged micro particulates to the dust collection plate.
  • the positive charged micro particulates affected by Coulomb force generated toward the dust collection plate in electric field between the negative dust collection plate and the positive voltage plate to be attracted to the dust collection plate thereby attached on the surface of the dust collection plate to be collected.
  • the controller 60 may be a device for control the automatic damper 30, the forced ventilation device 40 and the bidirectional dust collector 50, and may control the automatic damper 30, the forced ventilation device 40 and the bidirectional dust collector 50 according to condition such that the micro particulates removal system 1 according to an embodiment is operated by merging the natural ventilation method and the mechanical ventilation method in accordance with operation of the train 4 in the main tunnel 3.
  • the micro particulates removal system 1 may open the automatic damper 30 when the train 4 is passing the main tunnel 3 and stop the operation of the forced ventilation device 40 thereby operating in the natural ventilation method, and may close the automatic damper 30 when the train 4 does not pass in the main tunnel 3 and run the forced ventilation device 40 thereby operating in the mechanical ventilation method, by control of the controller 60.
  • the bidirectional electric dust collector will be described hereinafter.
  • FIG. 4 is a drawing illustrating a bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment
  • the bidirectional electric dust collector 50 of an embodiment may include a fixed frame 510 installed at the entrance 21 of the dust collection room 20 and a plurality of dust collector cells 520 installed at the fixed frame 510.
  • the fixed frame 510 may be installed to form a dust collection wall at an entire of the entrance 21 and a plurality of the dust collector cells 520 may be stacked by plane shapes at the fixed frame 510 to form the dust collection wall for collecting micro particulates.
  • the bidirectional electric dust collector 50 may be variety shapes of bidirectional electric dust collectors which have a primary charging part 51 and a secondary charging part 52 and of which the dust collector 53 is located between both charging parts 51 and 52 to collect micro particulates thereby forming the dust collection wall.
  • the dust collection wall may also be formed of a plurality of dust collector cells 520 and the fixed frame 510.
  • FIG. 5 is a drawing illustrating a dust collector cell of the micro particulates removal system of a subway vent according to an embodiment.
  • the dust collector cell 520 may include a cell housing 524, a primary charging part 521, a secondary charging part 522 and a dust collector 523.
  • the cell housing 524 may be opened in a direction of air flow and closed to both sides thereby providing an installment space where the primary and secondary charging parts 521 and 522 and the dust collector 523 are installed therein.
  • the cell housing 524 may be opened up and down, and further include a guide 524-1 at front part and a rear part of the open portion.
  • the guide 524-1 may guide air flowing into the dust collector 523.
  • the primary charging part 521 and the secondary charging part 522 may be installed on both side of the air flowing direction of the cell housing 524 and may be formed of a multi cross fin ionizer I that a plurality of protrusions having saw shape with predetermined length are formed along longitudinal direction for charging micro particulates using corona discharging by connecting to a high voltage power supplier, and a plurality of side protrusions are formed on both sides along the longitudinal direction for inducing corona discharging.
  • the dust collector 523 may be locate between the primary charging part 521 and the secondary charging part 522 and may include a dust collector electrode 523-1 formed of continuously stacked grounded plane metal plates to collect charged micro particulates and a voltage plate 523-2 installed in parallel with the multi cross fin ionizer I between the metal plates of the dust collector electrode 523-1 to be connected to the high voltage power supplier.
  • FIG. 6 is a drawing illustrating a bidirectional electric dust collector of the micro particulates removal system of a subway vent according to an embodiment.
  • a primary shutter 530-1 installed on a side of the dust collection room 20 and a secondary shutter 530-2 installed on the other side of the main tunnel 3 of the subway are disposed the bidirectional electric dust collector 50 on the basis of the bidirectional electric dust collector 50 to open or close the space where the bidirectional electric dust collector 50 is installed.
  • a primary/secondary cleaning devices 540-1/2 may be further installed respectively between the primary shutter 530-1 and the bidirectional electric dust collector 50 and between the secondary shutter 530-2 and the bidirectional electric dust collector 50 to spray high pressure air and cleaning solution to the primary charging part, the secondary charging part and the dust collector.
  • the primary shutter 530-1 and the secondary shutter 530-2 may be close the space where the bidirectional electric dust collector 50 is installed when the cleaning for bidirectional electric dust collector 50 is conducting to prevent the dust collection room 20 or the main tunnel of the subway from being re-contaminated by re-scattered micro particulates or contaminated cleaning water during cleaning and drying.
  • FIG. 7 is a drawing illustrating a cleaning device of the micro particulates removal system of a subway vent according to an embodiment.
  • the primary/secondary cleaning devices 540-1/2 may include a drain 541 formed under the bidirectional electric dust collector 50, an air pipe 542 having a plurality of air spray nozzles for spraying air and performing dry and dry cleaning, a cleaning solution pipe 543 having a plurality of cleaning solution splay nozzles for performing wet cleaning, a driver 544 for moving the air pipe and the cleaning solution pipe up and down, and provider 545 connected to the air pipe 542 and the cleaning solution pipe 543 for providing high pressure air with the air pipe 542 and high pressure cleaning solution with the cleaning solution pipe 543.
  • the drain 541 may be a device for withdraw and throw away the cleaning solution used at the wet cleaning.
  • the drain 541 may be formed under the primary charging part 51, the secondary charging part 52 and the dust collector 53 to collect and throw away dropped cleaning solution used at as cleaning solution.
  • the driver 545 may be formed by connecting an upper rotation axis and a lower rotation axis with a chain, wherein the upper rotation axis and the lower rotation axis may be formed at an upper portion and a lower portion of left/right rails which are formed vertically by predetermined length.
  • the driver 545 may play for moving the air pipe 542 and the cleaning solution pipe 543.
  • the air pipe 543 having the air splay nozzle and the cleaning solution pipe 542 having cleaning solution splay nozzle may be coupled with the drive 545 to be disposed toward the bidirectional electric dust collector 50 and move up and down.
  • the provider 545 may include a compressed gas vessel or a compress pump for providing the high pressure air, a device such as high pressure pump for providing high pressure cleaning solution, and the variety of valves for adjusting the high pressure air and cleaning solution.
  • the provider 545 may be limited in specific components and be conventionally constructed by the variety of devices capable of providing high pressure air and cleaning solution.
PCT/KR2016/002575 2015-10-20 2016-03-15 Micro particulates removal system of subway vent WO2017069351A1 (en)

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