KR101665096B1 - Removal device for particulate matters using electromagnetic field - Google Patents

Removal device for particulate matters using electromagnetic field Download PDF

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Publication number
KR101665096B1
KR101665096B1 KR1020150047598A KR20150047598A KR101665096B1 KR 101665096 B1 KR101665096 B1 KR 101665096B1 KR 1020150047598 A KR1020150047598 A KR 1020150047598A KR 20150047598 A KR20150047598 A KR 20150047598A KR 101665096 B1 KR101665096 B1 KR 101665096B1
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South Korea
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iron
tunnel
fine dust
dust
based fine
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KR1020150047598A
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Korean (ko)
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박덕신
박종헌
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한국철도기술연구원
동양대학교 산학협력단
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D49/00—Other details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transportation (AREA)
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  • Electrostatic Separation (AREA)

Abstract

The present invention relates to a fine dust collecting apparatus floating in a tunnel using an electromagnetic field, comprising: a plurality of plate magnets installed on a lower portion of a train running on a route in a tunnel, And a support which supports the plate magnet and is fixed to a lower portion of the electric motor.
According to the invention, the concentration of the iron-based fine dust in the subway tunnel can be remarkably lowered by using the plate magnet through the electromagnetic dust collecting system. Especially, in order to reduce the dust concentration in the tunnel to a predetermined level, the minimum size and the minimum number of operation of the dust collecting device are calculated and operated. Therefore, when removing the iron-based dust from the tunnel, 61-79% And it also has an advantage of reducing faults of various electrical and electronic devices such as electric vehicles and signal controllers.

Description

TECHNICAL FIELD [0001] The present invention relates to a dust collecting apparatus floating on a tunnel using an electromagnetic field,

The present invention relates to a fine dust collecting apparatus floating in a tunnel using an electromagnetic field, and more particularly, to an apparatus for collecting fine iron dust containing iron content in a subway tunnel, The amount of iron-based fine dust that is collected and removed from the amount of dust generated by the operation of the train during the day is increased, so that the minimum number of operations can be calculated according to the size of the collecting device. Dust collecting apparatus.

In general, subway trains use propulsion between the wheel and the rail to propel, decelerate, and steer. When the electric vehicle stops, the brakes are strongly rubbed against the wheel face or disk to stop.

Therefore, when a train is driven, ferrous related fine dusts are inevitably generated due to strong surface friction occurring between the wheel and the rail and the brake ring.

Especially, in the case of subways, the proportion of dust generated during the operation of electric trains is large, so that only a part of dust is discharged outside and the rest is accumulated in the tunnel, thereby polluting the air quality of tunnels and shortening the life span of various electric and electronic devices including vehicles and signal devices And cause the disorder.

According to the measurement result of the fine dust in the tunnel, 61 ~ 79% of the fine dust components of the subway tunnel are iron components, and it is necessary to effectively remove the dust containing the iron component in order to clean the subway air quality .

On the other hand, in order to improve the air quality of the subway, measures such as water cleaning or ventilation have been taken in the tunnel in the past.

Of course, in recent years, in order to improve the air quality of a subway, reference 1 (Japanese Patent Application Laid-Open No. 10-2011-0041608), Reference 2 (Japanese Patent Application No. 10-1006166), and Reference Document 3 (Japanese Patent Application No. 10-1377739) As suggested, there is a method of removing magnetic fine dust or flour contained in subway air by installing a magnet on the exhaust, ventilation or reverse line of the subway, or removing magnetized flour from the tunnel by installing a magnet under the running train However, the efficiency of adsorption of these magnetic fine particles or powder is low and the amount of adsorbed particles is not so low as to reduce the fine dust particles in the underground tunnel to a measurable level.

According to the above references, the dust collector installed in the vehicle is designed to be narrower and smaller than the distance where the dust particles are scattered by the heat wind due to the magnitude of the magnet, so that large dusts are collected but small dusts have a low collection rate, There is also a problem that the removal efficiency of the dust (PM 10 ) is low.

In addition, none of the conventional dust collecting methods have proposed any technique for estimating the amount of dust to be removed during one day to remove dust in the tunnel. Therefore, the amount of dust to be removed during the day is insufficient, To a measurable level.

Reference 1: Published patent application No. 10-2011-0041608 Reference 2: Registration No. 10-1006166 Reference 3: Registration No. 10-1377739

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an iron- And an object thereof is to provide a collecting device.

In order to increase the collection efficiency of the iron-based fine dust contained in the air in the tunnel, the amount of dust to be removed from the tunnel is greater than the amount of dust generated by the operation of the train for one day. And to provide a fine dust collecting apparatus floating in a tunnel using an electromagnetic field designed by estimating the amount of dust.

In order to solve such a technical problem,

A plurality of plate magnets installed in a lower portion of a train running on a route in a tunnel, the plate magnets being stacked vertically with a predetermined gap therebetween to attract iron-based fine dust in the tunnel; and a column supporting the plate magnet and fixed to a lower portion of the train The present invention provides a fine dust collecting apparatus floating in a tunnel using an electromagnetic field.

In this case, the plurality of plate magnets are installed horizontally in the traveling direction of the electric motor.

The plurality of plate magnets are supported by a plurality of struts, and the upper end of the strut is fixed to a lower portion of the electric vehicle.

In addition, the width of the plate magnet is characterized by the strength of the magnet, the magnet spacing, the speed of the train, and the particle size of the iron-based fine dust particles.

In addition, the plate magnet is an electromagnet that collects iron-based fine dust particles while the electric vehicle is in operation.

In order to increase the adsorption area of the iron-based fine dust, at least one electric motor vehicle is installed.

Further, in order to increase the amount of the iron-based fine dust removed by the dust collector rather than the amount of the iron-based fine dust generated in the tunnel, the operating frequency of the electric motor vehicle, the cross-sectional area of the tunnel, the dust collecting sectional area of the fine dust, The minimum operating frequency is determined according to the minimum operating frequency.

According to the present invention, the concentration of the iron-based fine dust in the subway tunnel can be remarkably lowered by using the plate magnet through the electromagnetic dust collecting system.

In addition, since the minimum size and the minimum operation number of the fine dust collecting device are calculated and operated in order to lower the concentration of the dust in the tunnel to a predetermined level, the present invention can reduce the fine dust of the underground history which is harmful to the human body when the iron- 61 ~ 79%, and it is also advantageous to reduce the obstacles of various electric and electronic devices in the electric car and the signal controller.

1 is a view illustrating the installation of a fine dust collecting apparatus floating in a tunnel using an electromagnetic field according to the present invention.
2 is a detailed block diagram of a fine dust collecting apparatus floating in a tunnel using an electromagnetic field according to the present invention.
3 is a graph showing the magnetic flux density change along the distance from the plate magnet surface.
Fig. 4 is a view for explaining forces acting on iron-based dust particles between two plate magnets.
FIG. 5 is a view for comparing shapes of lines of magnetic force according to the polarity arrangement of opposing magnet faces. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

FIG. 1 is a view illustrating the installation of a fine dust collecting apparatus floating in a tunnel using an electromagnetic field according to the present invention, and FIG. 2 is a detailed configuration diagram of a fine dust collecting apparatus floating in a tunnel using an electromagnetic field according to the present invention. According to the present invention, the fine dust collecting apparatus 100 floating in a tunnel using an electromagnetic field according to the present invention is an electromagnetic dust collector for efficiently removing dust containing a large amount of iron components in a subway tunnel, And is designed to have a structure and size for increasing the collection efficiency of the dust contained in the air passing through the fine dust collecting apparatus 100 during the operation of the electric motor vehicle 1 and to remove the amount of dust generated by the operation of the electric motor vehicle during one day It is preferable to design the minimum operating number according to the size of the fine dust collecting apparatus 100 so that the amount of the fine dust collecting apparatus 100 is increased.

In order to effectively remove the dust in the tunnel, the fine dust collecting apparatus 100 according to the present invention is installed in one or more of all or part of the electric railway 1 running on the route, A plurality of plate magnets 110 stacked and installed at predetermined intervals in the vertical direction and a plurality of struts 120 supported by the plurality of plate magnets 110 and fixed to the lower portion of the electric motor 1. [

At this time, the plate magnet 110 is arranged so that its upper side is an S pole and its lower side is an N pole, and the two pole faces are vertically stacked so as to be parallel to the traveling direction of the electric motor 1. Particularly, the height and length of the fine dust collecting apparatus 100 are determined such that the number and length of the plate magnets 110 are maximized within the limits of the vehicle (Ministry of Land, Transport and Maritime Ordinances No. 296 and 8) Is determined so as to be equal to or greater than Equation (1) described below according to the intensity, thickness, length of the magnet, and the interval between the two magnetic poles.

Hereinafter, the constitution of each part of the present invention will be described in detail.

First, the plate magnet 110 is designed so that the magnitude (width) x of the magnet is greater than the following formula (1) according to the maximum speed of the train, the intensity of the magnet, and the distance between the magnets, predetermined size (for example: PM 1 .0) uses an electromagnet to capture all the more dust.

Figure 112016057178986-pat00013
... (1)

In order to increase the amount of iron-based dust removed through the fine dust collecting apparatus 100 according to the present invention from the amount of iron-based dust generated by the operation of the electric motor vehicle 1 in the tunnel, the fine dust collecting apparatus 100 ) From the following formula (2).

Figure 112016057178986-pat00014
... (2)

On the other hand, the strength is 0.5 Tesla (= 5,000 Gauss), and the size is 15 (W) x 10 (L ) x 10 (T) of sheet magnets in case also the magnetic flux density according to the distance (x) away from the magnet face 3 The magnetic flux density B change along the distance from the plate magnet face is reduced as shown in the graph and the following equation (3).

... (3)

delete

On the other hand, in the plate magnet Referring to Figure 4 two plate magnet 110 if the separation between the G La, and two plate magnet 110 is midway point (that is, G / 2) iron dust particles 200 in between The attraction force due to gravity and the air resistance caused by the gravity, and the air resistance due to the heat wind passing between the plate magnets 110 act.

At this time, the force F m that the iron-based dust particles 10 are attracted to by the plate magnet 110 is expressed by the square of the magnetic flux density B of the plate magnet 110 and the area of the iron- (A).

Figure 112015033000163-pat00005

The end velocity v of the particles in which the force of the iron-based fine dust 200 between the two plate magnets 110 is absorbed by the plate magnet 110 by the magnetic force and the gravity becomes equal to the air resistance of the particles, (5).

Figure 112016057178986-pat00016
... (5)

Therefore, the time t during which the iron-based fine dust 200 floating at the height h position above the plane of the plate magnet 110 is attracted to the plate magnet 110 is expressed by the following equation (6).

Figure 112016057178986-pat00017
... (6)

In this case, since the intensity of the train wind generated in the lower portion of the electric train 1 in the direction opposite to the forward direction of the electric train 1 is 40 to 60% of the train speed, the electric train 1 ) The intensity of the train windings generated at the bottom does not exceed the train speed.

Therefore, when the maximum speed of the train wind passing between the plate magnets 110 of the fine dust collector 100 installed at the lower portion of the electric motor 1 is equal to the speed of the electric railcar 1, (1) when the size of the magnet is smaller than the formula (1), the part is not adsorbed and is scattered by the heat wind because the distance by which the iron dust particles are blown by the heat wind is the same as the above- .

On the other hand, the polarity arrangement of the plate magnet 110 also affects the attraction force, which is also a consideration. 5, when a plurality of plate magnets 110 are arranged on the fine dust collecting apparatus 100 in the vertical direction, the polarity of the magnet faces between the adjacent plate magnets 110 facing each other must be opposite to each other so that the attracting force is maximized . 5 (b), when the polarities of the facing magnets 110 are the same, there is no magnetic force or weak space in the space between the two surfaces, so that the adsorption efficiency of the iron-based fine dust 200 It is preferable to arrange the plate magnets 110 so that the polarities of the magnet faces between adjacent plate magnets 110 are opposite to each other as shown in FIG. 5 (a).

Next, the fine dust collecting apparatus 100 must remove the iron-based fine dust 200 more than the amount of dust generated during the day due to the operation of the electric motor vehicle 1 in the tunnel.

At this time, the iron-based fine dust 200 generated during the day due to the operation of the electric motor vehicle 1 is proportional to the number of operations of the electric vehicle 1 and the amount of the iron-based fine dust generated when the electric vehicle 1 is operated once.

The amount of dust removed through the operation of the fine dust collecting apparatus 100 is proportional to the number of operations of the fine dust collecting apparatus 100 and the amount of dust adsorbed when the fine dust collecting apparatus 100 is operated once.

Therefore, in the present invention, the amount of dust to be removed through the fine dust collecting apparatus 100 becomes larger than the amount of the iron-based fine dust 200 generated by the operation of the electric motor vehicle 1 in the tunnel, The sectional area and the minimum operating number of the battery 100 are calculated as shown in the above formula (2).

The number of operations of the fine dust collecting apparatus 100 may vary depending on the amount of generated iron dust, the effective cross-sectional area of the dust collector, and the number of adsorbing units, as shown in Equation (2). When the fine dust collecting device 100 is installed at the lower part of the electric motor vehicle 1, since the effective sectional area ratio of the fine dust collecting device 100 in the cross-sectional area of the subway tunnel is very low, less than 4.45% It is possible to increase the amount of dust that is newly removed by increasing the dust collecting area by installing two dust collecting apparatuses 100 in the lower part of the trailer car of all the electric trains 1 to maximize the dust collecting apparatus 100.

The plate magnets 110 are made of electromagnets and the plate magnets 110 are firmly fixed by a plurality of pillars 120. The upper ends of the pillars 110 are connected to the lower portion of the electric motor 1 As shown in Fig.

An application example of the fine dust collecting apparatus 100 according to the present invention designed with the above structure will be described.

The plate magnet 110 having a strength of 0.5 Tesla (= 5,000 Gauss) and a size of 15 (W) x 10 (L) x 10 (T) is applied to the fine dust collector 100 according to the present invention And the separation distance between the plate magnets 110 is 40 mm, in order to collect all the fine dusts of PM 1.0 or more, the width of the plate magnet 110 should be 41.1 mm or more.

The effective sectional area ratio of the fine dust collector (100) was 4.45%, the amount of initial fine dust in the tunnel was 131.6 ㎍ / ㎥, and the amount generated during operation of the train was 6.35 ㎍ / ㎥, respectively. In this case, only about 10% of the amount of dust generated during the operation of the train (1) is newly generated, and the remaining 90% is generated by re-scattering.

Therefore, in order to remove the iron-based fine dust in the tunnel, it is necessary to install two fine dust collecting apparatuses (100) on all the electric trains (1) for more than 270 days in order to remove the fine iron dust Dust can be removed.

On the other hand, if the total effective sectional area ratio of the fine dust collecting apparatus 100 is 4% or less, the amount of new generation is larger than the amount of adsorption, and the iron-based fine dust in the tunnel is not reduced.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The scope of protection of the present invention should be construed under the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

1: Electric train
100: fine dust collecting device
110: plate magnet
120: holding
200: iron-based fine dust

Claims (7)

A plurality of plate magnets which are stacked vertically on the lower portion of a train running on a route in a tunnel to attract iron-based fine dust in the tunnel,
And a plurality of struts supporting the plate magnets and having an upper end fixed to a lower portion of the electric motor,
The width of the plate magnet (
Figure 112016057178986-pat00018
) Takes into account the magnitude of the magnet, the magnet spacing, the speed of the train, and the particle size of the iron-based fine dust,
Figure 112016057178986-pat00019
(here,
Figure 112016057178986-pat00020
The speed of the train,
Figure 112016057178986-pat00021
Magnetic spacing,
Figure 112016057178986-pat00022
However,
Figure 112016057178986-pat00023
Is the viscosity coefficient of air,
Figure 112016057178986-pat00024
The permeability of air,
Figure 112016057178986-pat00025
B is the magnetic flux density,
Figure 112016057178986-pat00026
Is a gravitational acceleration or more. The fine dust collecting apparatus according to claim 1,
The method according to claim 1,
Wherein the plurality of plate magnets are installed horizontally in the traveling direction of the electric motor.
delete delete The method according to claim 1,
Wherein the plate magnet is an electromagnet for collecting the iron-based fine dust during operation of the electric railway vehicle.
The method according to claim 1,
Wherein one or more of the iron-based fine dusts are installed in the train to increase the adsorption area of the iron-based fine dust.
The method according to claim 1,
The operating frequency of the train, the cross-sectional area of the tunnel, the dust collecting cross-sectional area, the amount of the iron-based fine dust, and the concentration of the iron-based fine dust in the tunnel are considered so that the amount of the iron-based fine dust removed by the dust collector becomes larger than the amount of the iron- The minimum operating frequency (
Figure 112016057178986-pat00027
)silver,
Figure 112016057178986-pat00028

Wherein the micro dust collecting device floats in a tunnel using an electromagnetic field.
KR1020150047598A 2015-04-03 2015-04-03 Removal device for particulate matters using electromagnetic field KR101665096B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200075302A (en) 2018-12-18 2020-06-26 한국과학기술연구원 Collecting apparatus for fine dust scattered by the electric rail
KR102184837B1 (en) 2020-08-11 2020-12-01 독일에프에이유에를랑겐유체역학연구소 부산지사 Air cleaning system based on photocatalyst and gas hydrate
KR102231124B1 (en) 2020-07-24 2021-03-23 독일에프에이유에를랑겐유체역학연구소 부산지사 Fine dust collecting device based on rotating centrifugal force of rotor blade
KR102490691B1 (en) 2021-09-16 2023-01-25 독일에프에이유에를랑겐유체역학연구소 부산지사 Method for removing unwished object by centrifugation based on rotating system and unwished object removal machine by hidden centrifugal forces

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101006166B1 (en) 2008-12-10 2011-01-07 건국대학교 산학협력단 That is established to subway station rail track remove installation and the way
KR20110041608A (en) 2009-10-16 2011-04-22 건국대학교 산학협력단 In subway air included magnetic minute dust floating gathering of the minute dust both elimination device that compose magnet honeycomb
KR101377739B1 (en) 2012-11-09 2014-03-25 한국철도기술연구원 Device for removing magnetic dust materials of a transportation system utilizing a permanent magnet
KR20140050871A (en) * 2012-10-22 2014-04-30 한국철도기술연구원 Removal device of fine particulate matter for electric rolling stocks
KR101456899B1 (en) * 2013-09-25 2014-10-31 (주)에코솔루텍 Wet Electrostatic Precipitator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101006166B1 (en) 2008-12-10 2011-01-07 건국대학교 산학협력단 That is established to subway station rail track remove installation and the way
KR20110041608A (en) 2009-10-16 2011-04-22 건국대학교 산학협력단 In subway air included magnetic minute dust floating gathering of the minute dust both elimination device that compose magnet honeycomb
KR20140050871A (en) * 2012-10-22 2014-04-30 한국철도기술연구원 Removal device of fine particulate matter for electric rolling stocks
KR101377739B1 (en) 2012-11-09 2014-03-25 한국철도기술연구원 Device for removing magnetic dust materials of a transportation system utilizing a permanent magnet
KR101456899B1 (en) * 2013-09-25 2014-10-31 (주)에코솔루텍 Wet Electrostatic Precipitator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200075302A (en) 2018-12-18 2020-06-26 한국과학기술연구원 Collecting apparatus for fine dust scattered by the electric rail
KR102231124B1 (en) 2020-07-24 2021-03-23 독일에프에이유에를랑겐유체역학연구소 부산지사 Fine dust collecting device based on rotating centrifugal force of rotor blade
KR102184837B1 (en) 2020-08-11 2020-12-01 독일에프에이유에를랑겐유체역학연구소 부산지사 Air cleaning system based on photocatalyst and gas hydrate
KR102490691B1 (en) 2021-09-16 2023-01-25 독일에프에이유에를랑겐유체역학연구소 부산지사 Method for removing unwished object by centrifugation based on rotating system and unwished object removal machine by hidden centrifugal forces

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