KR102253116B1 - Energy-saving Ozone-free Electric Dust Collection and Ventilation System for Reducing Fine Dust in Subways - Google Patents

Abstract

The present invention relates to an energy-saving type ozone-free electric duct collection and ventilation system for reducing fine dust in a subway, which is configured to save more electric energy by variably controlling an electric dust collector in accordance with an air pollution degree in case of forced ventilation while selectively driving natural ventilation and forced ventilation, and to prevent ozone harmful to a human body even when a discharge tip is corroded by using a carbon fiber, suppressing the production of ozone, as the discharge tip. To achieve the objective, the energy-saving type ozone-free electric duct collection and ventilation system for reducing fine dust in a subway includes: a forced ventilation part having an exhaust fan installed therein; a natural ventilation part leading air in the underground tunnel part to be introduced into the inside or leading inside air to be discharged to the underground tunnel part in accordance with the running of a train; a first ventilation part of a predetermined size into which air in the forced ventilation part and the natural ventilation part is individually introduced; a second ventilation part having a predetermined length in a horizontal direction, connected with the first ventilation part, and having an electric dust collector installed therein to remove pollutants in the introduced and discharged air; a third ventilation part having a predetermined length in a vertical direction and connected with the second ventilation part to lead the air in the underground tunnel part to be discharged to the outside or lead outside air to be introduced into the inside; and a control part controlling the operation of the exhaust fan and the electric dust collector.

Description

Energy-saving Ozone-free Electric Dust Collection and Ventilation System for Reducing Fine Dust in Subways}

The present invention relates to an energy-saving ozone-free electric dust collection and ventilation system for reducing subway fine dust, and more particularly, the generation of pollutants due to corrosion of the discharge means by using an electric dust collector using carbon fiber as a discharge means. The present invention relates to an energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in subway lines that can prevent, prevent the generation of ozone harmful to the human body, and save energy through variable control of an electric precipitator.

In general, a subway platform is provided with a ventilation system that discharges contaminated air inside the tunnel to the outside, and at the same time supplies the outside air to the inside of the underground tunnel to ventilate it.

Such a conventional subway ventilation system is configured to forcibly discharge the air inside the underground tunnel through an exhaust fan, etc., and an electric dust collector to remove pollutants such as fine dust contained in the air is installed on the supply and exhaust passage. do.

However, when the exhaust fan and the electric dust collector are constantly operated to ventilate the air inside the underground tunnel, a large amount of electric energy is used. Development is taking place.

As a prior art for the above purpose, there is disclosed a subway ventilation system (hereinafter referred to as'patent document') having a vertical double-layer ventilation structure of Korean Patent Publication No. 1587275.

The subway ventilation system disclosed in the patent document includes: a first opening part formed on the side or upper side of the subway tunnel to move the air inside the subway tunnel upward; A forced ventilation space part formed on one side of the upper side of the first opening part and having a forced ventilation fan for forcibly venting the air inside the subway in the internal space; A partition wall portion formed above the forced ventilation space portion and characterized in that it has a duct structure; A natural ventilation space portion formed on the upper side of the partition wall portion and configured to form an internal space to naturally ventilate the air inside the subway; A first switching device formed on one side of the forced ventilation space to supply air introduced through the first opening to the forced ventilation space when opened; A second switching device for supplying the air discharged by the forced ventilation fan toward the second opening portion; A blast damper formed on one side of the natural ventilation space to supply air introduced through the first opening to the natural ventilation space; A natural ventilation switch for supplying the air supplied through the blast damper toward the second opening portion; A second opening part for discharging air that has passed through the natural ventilation space part or the forced ventilation space part to the ground when the second switch or the natural ventilation switch is opened; Remote ventilation control means for monitoring the on-off status information of the first switch, second switch, forced ventilation fan, blast damper, and natural ventilation switch from a remote location, and performs natural ventilation and forced ventilation by remote control. It consists of including.

However, the subway ventilation system disclosed in the above patent document is operated selectively from natural ventilation or forced ventilation as needed, and through this, compared to the regular operation of the dust collector, the operation time of the dust collector is relatively reduced to save electrical energy. In this case, although the operation time of the dust collector can be relatively reduced, there is a problem in that the efficiency of use of electric energy decreases because the dust collector is operated with a fixed load regardless of air pollution during forced ventilation.

Accordingly, there is a need for the development of an improved subway ventilation system to further save electric energy by variably controlling the electric dust collector according to the air pollution level during forced ventilation while being selectively operated between natural ventilation and forced ventilation.

KR 10-1587275 B1 (2016.01.14.) KR 10-1679403 B1 (2016. 11. 18.) KR 10-1217191 B1 (2012. 12. 24.) KR 10-0974039 B1 (2010.07.29.) KR 10-0974038 B1 (2010.07.29.) KR 10-2009-0102048 A (2009. 09. 30.)

The present invention was conceived to solve the problems of the conventional subway ventilation system as described above, and the problem to be solved by the present invention is an electric dust collector according to the air pollution level during forced ventilation while being selectively operated between natural ventilation and forced ventilation. It is to provide an energy-saving electric dust collection and ventilation system that can further save electric energy by variable control.

In addition, another problem to be solved by the present invention is to provide an ozone-free electric dust collection and ventilation system in which ozone is not generated even if the discharge tip is corroded by using a carbon fiber suppressing ozone generation as a discharge tip.

An energy-saving ozone-free electric dust collection system for reducing fine dust in subways according to the present invention for solving the above problems includes: a forced ventilation unit having an exhaust fan installed therein to suck air in the underground tunnel unit; A natural ventilation unit positioned at one side of the forced ventilation unit and configured to allow air from the underground tunnel unit to flow into or to discharge air from the underground tunnel unit according to the driving of the train; A first ventilation unit having a predetermined length in a horizontal direction and having a predetermined size through which internal air of the forced ventilation unit and the natural ventilation unit are respectively introduced; A second ventilator having a predetermined length in a horizontal direction and being connected to the first ventilating part and installed with an electric dust collector to remove pollutants from the air introduced and discharged; A third ventilation unit having a predetermined length in a vertical direction and connected to the second ventilation unit 40 to allow air from the underground tunnel to be discharged to the outside or to allow outside air to flow into the inside; And a control unit for controlling the operation of the exhaust fan and the electric precipitator, and a pollution detection sensor for measuring air pollution level is installed in the underground tunnel part, and the electric dust collector includes pollution for measuring air pollution degree and ozone concentration. A detection sensor and an ozone detection sensor are installed respectively, and the electric dust collector is equipped with a discharge tip made of carbon fiber to suppress ozone generation due to corrosion, and the control unit turns on the exhaust fan according to whether or not the train is running. It is configured to control the off operation, characterized in that configured to adjust the voltage applied to the electric precipitator according to the air pollution degree measured by the pollution detection sensor.

In addition, the present invention is further characterized in that when the exhaust fan is operated, the speed of the exhaust fan is adjusted according to the air pollution level measured by the pollution detection sensor.

In addition, the second ventilation portion is formed to have an air passage in the shape of "a" or "b", so that foreign matter introduced through the third ventilation portion flows horizontally along the air passage of the second ventilation portion. Another feature is that it is structurally configured so that foreign matters do not flow into the electric precipitator by allowing it to fall by its own weight.

In addition, in the present invention, the electric dust collector includes a discharge unit and a dust collecting unit, and the discharge unit includes: a main frame having a rectangular frame shape having a predetermined size; A lattice frame installed inside the main frame so that a plurality of horizontal plates and vertical plates intersect each other at predetermined intervals; And a plurality of mountings that have a predetermined length in the horizontal direction and are installed at a predetermined distance up and down, wherein a plurality of discharge tips are installed at a predetermined distance on the mounting table.

And the present invention is another feature in that the discharge tip is detachably installed on the mounting table.

According to the present invention, there is an advantage of saving electric energy by variably controlling the electric dust collector according to the air pollution level during forced ventilation while being selectively operated between natural ventilation and forced ventilation.

In addition, since carbon fiber with less ozone generation is used as a discharge tip, even if the electric dust collector is operated for a long time, the amount of ozone harmful to the human body is relatively reduced compared to conventional electric dust collectors.

1 and 2 are configuration diagrams showing an example of an energy-saving ozone-free electric dust collection system for reducing fine dust in subways according to the present invention.
3 is a view showing an example of an electric precipitator according to the present invention.
Figure 4 is a view showing an example of a discharge tip according to the present invention.
5 is a block diagram showing an example of a control unit according to the present invention.
6 is a view showing an example in which the energy-saving ozone-free electric dust collection system for reducing fine dust in the subway according to the present invention is ventilated using a train wind.
7 is a view showing an example in which the energy-saving ozone-free electric dust collection system for reducing fine dust in the subway according to the present invention is ventilated through an exhaust fan.
8 is a view showing an example in which the mounting table according to the present invention is detachably installed from the main frame.

Hereinafter, according to the accompanying drawings showing a preferred embodiment of the present invention will be described in detail.

The present invention can be operated selectively between natural ventilation and forced ventilation, but can further save electrical energy by variably controlling the electric dust collector according to the air pollution level during forced ventilation, and discharge by using carbon fiber that suppresses ozone generation as a discharge tip. It is intended to provide an energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in subways so that harmful ozone does not occur even if the tip is corroded. It consists of including a unit 10, a natural ventilation unit 20, a first ventilation unit 30, a second ventilation unit 40 and a third ventilation unit 50.

The forced ventilation unit 10 is configured to forcibly vent the air inside the underground tunnel unit 1 by forcibly discharging the contaminated air from the underground tunnel unit 1 to the outside.

The forced ventilation unit 10 is installed so that one end communicates with the inner space of the underground tunnel unit 1 and the other end communicates with the first ventilation unit 30 to be described later, as shown in FIGS. 1 and 2.

At this time, the forced ventilation unit 10 may be formed to have a predetermined length horizontally or vertically depending on the installation environment, and alternatively, relative to one end connected to the underground tunnel unit 1 As a result, it may be formed to have a slope of a predetermined angle so that the height of the other end communicating with the first ventilation part 30 is formed high.

In addition, a plurality of exhaust fans 11 are installed inside the forced ventilation unit 10 to suck the air inside the underground tunnel unit 1 and discharge it toward the first ventilation unit 30, and such an exhaust fan 11 The on-off operation is performed under the control of the controller 60, which will be described later.

As the natural ventilation unit 20 is located on one side of the forced ventilation unit 10, the internal air of the underground tunnel unit 1 is discharged toward the first ventilation unit 30 by the train wind, and at the same time, the outside air is discharged from the underground tunnel unit. It is a configuration to be supplied to the (1) side.

The natural ventilation unit 20 is installed so that one end communicates with the inner space of the underground tunnel unit 1 and the other end communicates with the first ventilation unit 30 as shown in FIGS. 1 and 2.

In addition, the natural ventilation unit 20 is separately installed at a predetermined distance from the forced ventilation unit 10 or partitions the internal space of the duct having a predetermined size so that the forced ventilation unit 10 and the natural ventilation unit 20 are separated. Can be configured.

In addition, a ventilation damper 21 is installed at one end of the natural ventilation unit 20 communicating with the underground tunnel unit 1 to control the amount of air introduced into the interior through the underground tunnel unit 1, and such a ventilation damper (21) may be configured to automatically adjust the opening amount through the control unit 60 to be described later.

In addition, a pollution detection sensor (S1) for measuring the pollution level of the internal air is installed in the underground tunnel unit (1), and the air pollution degree of the underground tunnel unit (1) detected through the pollution detection sensor (S1) is described later. It will be delivered to (60).

In addition, the underground tunnel unit 1 is further provided with a sensor that detects whether or not a train is in/out or a sensor that detects the air velocity (wind speed) of the underground tunnel unit 1, and the information sensed through this sensor is controlled by the controller ( 60) can be configured to be delivered together.

Through the configuration of the natural ventilation unit 20 as described above, the internal air of the underground tunnel unit 1 toward the natural ventilation unit 20 by the train wind generated in the process of the train passing through the inside of the underground tunnel unit 1 As it is introduced and discharged to the outside, or external air is introduced into the inside through the natural ventilation unit 20, natural ventilation is performed.

The first ventilation unit 30 is configured to guide air introduced through the forced ventilation unit 10 and the natural ventilation unit 20 to be introduced into the second ventilation unit 40 to be described later.

As shown in FIGS. 1 and 2, the first ventilation part 30 has a predetermined length and a first ventilation damper 31 is installed on one side of the forced ventilation part 10 and communicates with the natural ventilation part. A second ventilation damper 32 is installed on one side in communication with the 20, and a passage communicating with the second ventilation portion 40, which will be described later, is formed at one end.

In addition, a flow path partition plate 33 for partitioning the internal flow path based on the first ventilation damper 31 and the second ventilation damper 32 may be installed inside the first ventilation part 30.

In the second ventilation unit 40, the air of the underground tunnel unit 1 introduced through the first ventilation unit 30 or the external air introduced through the third ventilation unit 50 to be described later passes through the electric dust collector 41. It is a configuration that allows pollutants (fine dust, etc.) in the air to be removed by passing through.

As shown in FIGS. 1 and 2, the second vent 40 is formed to have an air passage in the shape of “a” or “b”, so that foreign matter introduced through the third vent 50 is It is structurally configured to prevent foreign matter from entering the electric dust collector 41 by allowing it to fall by its own weight while flowing horizontally along the air passage of the second ventilation part 40.

In addition, the electric precipitator 41 is installed on one side connected to the second ventilation unit 40, and the electric precipitator 41 includes a discharge unit, a dust collecting unit, and a high voltage generator.

At this time, the discharge unit includes a main frame 41A in the shape of a square frame having a predetermined size as shown in FIGS. 3 and 4, and a grid frame 41B installed to partition the space in a grid shape inside the main frame 41A. ), and a plurality of mountings (41C) installed to horizontally cross the space partitioned through the grid frame (41B) and the plurality of mountings (41C) while being installed on the grid frame (41B) It includes a plurality of discharge tips (41D) each inserted into the space.

Here, as shown in Fig. 4, the mounting plate 41C has a horizontally predetermined length and both ends are fixedly installed on the main frame 41A, and one end is connected to the fixing plate 41C'. The other end includes a mounting base 41C" having a predetermined length that is respectively inserted into the space partitioned through the grid frame 41B.

And the discharge tip (41D) is detachably installed on the other end of the mounting table (41C"), through which, if necessary, separating the mounting base (41C) from the main frame (41A), and then installed on the mounting base (41C"). The discharge tip 41D can be removed to be replaced or easily cleaned.

In addition, the discharge tip 41D is made of carbon fiber, through which the electric dust collector 41 is used for a long time, so that even if corrosion occurs, the amount of ozone generated is not large.

In addition, a pollution detection sensor (S2) and an ozone detection sensor (S3) for measuring air pollution degree and ozone concentration are installed in the electric dust collector 41 or the second ventilation unit 40, respectively, and the pollution detection sensor (S2) and The air pollution level and ozone concentration respectively sensed through the ozone sensor S3 are transmitted to the controller 60 to be described later.

The third ventilation unit 50 has one end connected to the second ventilation unit 40 and the other end is installed to communicate with the ground so that external air is supplied to the underground tunnel unit 1 or the air in the underground tunnel unit 1 It is a configuration so that the is discharged to the outside.

This third ventilation unit 50 is installed to have a predetermined length vertically as shown in Figs. 1 and 2, and a steel grating (no drawing symbol) that prevents foreign substances with large particles from easily entering the upper end thereof. Is installed.

The control unit 60 is configured to control the operation of the exhaust fan 11 installed in the forced ventilation unit 10 and the electric precipitator 41 installed in the second ventilation unit 40.

The control unit 60 acquires a signal from a sensor that detects the presence or absence of a train passing through the underground tunnel unit 1 or the flow rate of air (wind speed), and based on this, the air flow rate of the underground tunnel unit 1 is set. If abnormality occurs or it is determined that the train passes, the operation of the exhaust fan 11 is stopped as shown in FIG. 6, and then the internal air and the outside of the underground tunnel unit 1 through the natural ventilation unit 20 It is controlled so that the air is naturally ventilated.

At this time, when the air pollution level detected by the pollution detection sensor S1 of the underground tunnel part 1 is higher than the set reference value or the air pollution level detected by the pollution detection sensor S1 of the second ventilation unit 40 is higher than the set reference value The electric precipitator 41 is operated by applying power to the electric precipitator 41, and contaminants such as fine dust are removed through the electric precipitator 41 during natural ventilation.

In addition, the control unit 60 adjusts the voltage applied to the electric precipitator 41 according to the air pollution level detected through the pollution detection sensors S1 and S2 during ventilation through the natural ventilation unit 20, and through this, the electric precipitator (41) is variably controlled according to the air pollution level.

On the other hand, when the train does not run or the flow rate of the air inside the underground tunnel unit 1 is less than the set flow rate, the exhaust fan 11 of the forced ventilation unit 10 is operated as shown in FIG. 7, thereby forced ventilation. It is controlled so that the air inside the underground tunnel part 1 is discharged to the outside through the part 10.

At this time, when the internal air of the underground tunnel unit 1 is discharged to the outside through the forced ventilation unit 10, the external air passes through the electric precipitator 41 and the natural ventilation unit 20 through the third ventilation unit 50. It is ventilated as it flows into the underground tunnel part (1).

In addition, the control unit 60 adjusts the voltage applied to the electric precipitator 41 according to the air pollution level detected through the pollution detection sensors S1 and S2 when the exhaust fan 11 of the forced ventilation unit 10 is operated. And, through this, the electric precipitator 41 is variably controlled according to the degree of air pollution.

In addition, the control unit 60 adjusts the speed of the exhaust fan 11 according to the air pollution level measured through the pollution detection sensors S1 and S2, thereby controlling the voltage applied to the exhaust fan 11 according to the air pollution level. And the voltage applied to the electric precipitator 41 is adjusted together, so that the efficiency of saving electric energy is further improved.

On the other hand, the internal ozone concentration of the second ventilation unit 40 is measured through the ozone sensor (S3), and the control unit 60 is an electric precipitator when the ozone concentration detected through the ozone sensor (S3) is higher than the set concentration. By stopping the operation of 41 and allowing the exhaust fan 11 of the forced ventilation unit 10 to operate, the internal air of the second ventilation unit 40 for a predetermined time is transferred to the outside through the third ventilation unit 50. Forced to be discharged.

And the control unit 60 monitors the time interval at which the ozone concentration detected through the ozone sensor S3 reaches a set concentration or more, and if the time interval is less than or equal to the set time interval, the discharge tip of the electric precipitator 41 ( It guides the inspection and replacement of 41D), etc., through which ozone, which is harmful to the human body, is continuously generated and prevented from flowing into the underground tunnel part (1).

On the other hand, in the above, only the discharge tip 41D is shown and described as being detachably installed on the mounting table 41C", but in addition to this, the mounting table 41C may be detachably installed from the main frame 41A, and this Through it may be configured to easily replace a plurality of discharge tips (41D) installed on one mounting (41C) at the same time.

To this end, as shown in FIG. 8, insertion pieces P of a predetermined length are provided at both ends of the mounting table 41C, and elasticity of a predetermined size into which the insertion pieces P are inserted on both sides of the main frame 11 Fixture (H) may be provided.

At this time, the elastic fastener (H) is installed so that the arc-shaped elastic plates face each other to form a symmetrical shape, and the insertion piece (P) is inserted between the pair of elastic plates, so that the upper and lower surfaces of the insertion piece (P) are pressed through the elastic plate. It may be configured to be in close contact and fixed.

At this time, support protrusions (B) of a predetermined size are protruding upward and downward on the insertion piece (P), and such support protrusions (B) are inserted into one side of the elastic fastener (H) to a predetermined depth so that the mounting table (41C) is vibrated. It can be configured so that it does not flow more reliably.

Through the above configuration, it is possible to prevent the mounting base 41C from randomly flowing due to vibrations during use, and at the same time, the mounting base 41C of the mounting base 41C can be easily separated when necessary by removing the mounting base 41C"). It is possible to easily replace the discharge tips (41D) respectively installed in.

As described above, the present invention can be operated selectively between natural ventilation and forced ventilation, while the electric dust collector is variably controlled according to the air pollution level during forced ventilation to save electric energy, and also, carbon fiber with less ozone generation is used as a discharge tip. Therefore, even if the electric precipitator is operated for a long time, the amount of ozone that is harmful to the human body is relatively reduced compared to the conventional electric precipitator.

In the above, for convenience of explanation, the drawings showing the preferred embodiments and the configurations shown in the drawings have been described with reference numerals and names, but this is an embodiment according to the present invention, and the shape and the assigned name are given in the drawings. It is limited and the scope of the rights should not be interpreted, and the simple substitution of a configuration that has the same action as a change to a variety of predictable shapes from the description of the invention is within the range that can be changed for easy implementation by a skilled person You will see it extremely self-evident.

1: Underground tunnel section 10: Forced ventilation section
11: exhaust fan 20: natural ventilation
21: ventilation damper 30: first ventilation portion
31: first ventilation damper 32: second ventilation damper
33: Euro partition plate 40: second ventilation
41: electric dust collector 41A: main frame
41B: Grid frame 41C: Mount
41C': Fixing bar 41C": Mounting bar
41D: discharge tip 50: third vent
60: control part B: support protrusion
H: Elastic fastener P: Insertion piece
S1, S2: contamination detection sensor
S3: ozone sensor

Claims (5)

The exhaust fan 11 is installed inside the forced ventilation unit 10 to suck the air from the underground tunnel unit 1 to the inside;
A natural ventilation unit that is located at one side of the forced ventilation unit 10 and allows the air from the underground tunnel unit 1 to flow into the interior or discharge the air from the underground tunnel unit 1 according to the driving of the train. (20);
A first ventilation unit 30 having a predetermined length in a horizontal direction and having a predetermined size through which the internal air of the forced ventilation unit 10 and the natural ventilation unit 20 is introduced, respectively;
A second ventilation unit 40 having a predetermined length in the horizontal direction and having an electric precipitator 41 installed to remove pollutants from the air that is introduced and discharged while being connected to the first ventilation unit 30;
A third ventilation unit 50 having a predetermined length in a vertical direction and connected to the second ventilation unit 40 so that the air of the underground tunnel unit 1 is discharged to the outside or outside air is introduced into the inside; And
A control unit 60 for controlling the operation of the exhaust fan 11 and the electric precipitator 41;
Including,
In the underground tunnel part (1),
A pollution detection sensor (S1) that measures the air pollution level is installed,
In the electric dust collector 41,
A pollution detection sensor (S2) and an ozone detection sensor (S3) that measure air pollution degree and ozone concentration are installed, respectively,
The electric dust collector 41,
A discharge tip (41D) made of carbon fiber is installed to suppress ozone generation due to corrosion.
The control unit 60,
It is configured to control the on/off operation of the exhaust fan 11 according to whether the train is running, and the voltage applied to the electric precipitator 41 according to the air pollution level measured through the pollution detection sensors S1 and S2 is applied. Is configured to adjust,
When the exhaust fan 11 is operated,
An energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in the subway, characterized in that the speed of the exhaust fan 11 is adjusted according to the air pollution level measured through the pollution detection sensors S1 and S2.
delete The method according to claim 1,
The second ventilation part 40,
It is formed to have a "a" or "b"-shaped air passage, so that foreign matter flowing through the third venting part 50 flows horizontally along the air passage of the second venting part 40, while its own weight An energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in the subway, characterized in that it is structurally configured to prevent foreign matters from flowing toward the electric precipitator (41).
The method of claim 3,
The electric dust collector 41,
It consists of a discharge part and a dust collection part,
The discharge unit,
A square frame-shaped main frame 41A having a predetermined size;
A grid frame (41B) installed inside the main frame (41A) and installed to cross a plurality of horizontal plates and vertical plates at predetermined intervals; And
A plurality of mounting tables (41C) that have a predetermined length in the horizontal direction and are installed at a predetermined distance up and down;
Including,
The discharge tip 41D,
An energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in the subway, characterized in that a plurality of pieces are installed on the mounting table 41C at predetermined intervals.
The method of claim 4,
The discharge tip 41D,
Energy-saving ozone-free electric dust collection and ventilation system for reducing fine dust in the subway, characterized in that it is detachably installed on the mounting table (41C).

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