KR102222322B1 - Smoke reduction device capable of flow uniformity - Google Patents

Abstract

The present invention relates to a smoke reduction device, which collects particulate substances contained in exhaust gas discharged from a diesel engine for an emergency generator to be reduced and discharged, and more specifically, to the device which comprises: a main body having an inner space and connected to the inner space to have an inlet pipe and an outlet pipe provided to one end and the other end, respectively; two or more purification filters arranged in parallel to each other in a longitudinal direction in the inner space and reducing the particulate substance of the exhaust gas introduced through the inlet pipe of the main body to discharge the particulate substance to the discharge pipe; and a guide means spaced from and mounted on an inlet side of the purification filter to guide the introduced exhaust gas to uniformly flow to each purification filter.

Description

Smoke reduction device capable of flow uniformity

The present invention relates to an exhaust gas reduction device that collects and reduces particulate matter contained in exhaust gas discharged from an emergency generator diesel engine, etc., and then discharges it.

In general, large buildings, hospitals, and factories are equipped with emergency generators to prevent damage from being cut off due to power outages, and the emergency generators use diesel engines to drive the generators, thereby driving the necessary equipment. Is made to produce.

On the other hand, diesel engines have excellent thermal efficiency, but a soot reduction device that removes and reduces soot in the exhaust gas as harmful substances such as particulate matter (PM), that is, excessive emission of soot, causing air pollution.

A conventional smoke reduction device includes a housing configured to pass exhaust gas discharged from an emergency generator, and includes a soot collecting filter and an electric heater (pin heater and coil) installed inside the housing.

Such a conventional soot reduction device regenerates the soot collecting filter by supplying part of the emergency power produced by the operation of the emergency generator to the electric heater to operate the electric heater.

However, in the conventional exhaust gas reduction device configured as described above, the exhaust gas is not uniformly distributed inside the housing, and the exhaust gas is concentrated and flowed in a specific part inside the housing, thereby reducing the filtration efficiency of the soot collecting filter. There is this.

In other words, the exhaust gas reduction device for emergency generators has a width and height of 1 meter or more, unlike the exhaust gas reduction devices for vehicles, which are small in size, and due to the high temperature of the exhaust gas flowing into the exhaust gas reduction device, most of the exhaust gas is Since it is concentrated on the side and flows through the housing, in the end, only a certain area of the soot collecting filter is mainly used for filtration of harmful substances, thus reducing the filtration efficiency as well as shortening the life of the soot collecting filter.

In addition, when the exhaust gas is concentrated and flows in a specific part of the housing as described above, the back pressure rises, thereby reducing the efficiency of the diesel engine, as well as causing hunting and start-off of the engine even at high pressure.

Unexamined Patent Publication No. 10-2014-0098453 (published on Aug. 08, 2014)

Accordingly, an object of the present invention is to provide a bypass means for uniformly grinding the exhaust gas flowing into the body into each filter area to increase the filtering efficiency of the exhaust gas, and to convert the movement path of the exhaust gas to the outlet side when the back pressure is increased. It is intended to provide a smoke reduction device capable of equalizing flow to ensure the stability of a filter or generator by making it possible to use semi-permanently while being installed inside so that space is not limited.

As a means for solving the above-described problems, the exhaust gas reduction device (hereinafter referred to as'the device of the present invention') capable of equalizing the flow of the present invention is provided with an internal space and communicates with the internal space, The main body is provided with a discharge pipe, respectively; A purification filter that is disposed in the inner space in a longitudinal direction, and is discharged to the discharge pipe after reducing particulate matter of the exhaust gas flowing through the inlet pipe of the main body; And a guide means installed at a distance from the inlet side of the purification filter to induce the introduced exhaust gas to flow uniformly to each of the purification filters.

As an example, the internal space includes a mounting space in a central portion, in which the purification filter is installed, an inlet space provided below the mounting space and through which the inlet pipe is communicated to introduce exhaust gas, and an upper portion of the mounting space. And a discharge space through which the purified gas passing through the purification filter is discharged through communication with the discharge pipe and a partition wall for separating between the inlet space and the discharge space.

As an example, the guiding means is a plurality of guiding plates configured to increase in cross-sectional area from one side adjacent to the inlet pipe to the other side while being mounted at a position spaced apart from the bottom of each purification filter in the inflow space and having a constant inclination. It is characterized by including.

As an example, the guide means has a plate shape and is mounted to cross the inflow space in a transverse direction at a position spaced apart from the bottom of the plurality of purification filters so that the inflow space is divided and separated into two spaces. A plurality of flow holes are formed in a portion facing the purification filter, and a distribution plate configured to increase the diameter of the flow hole from one side adjacent to the inlet pipe to the other side.

As an example, a control valve that is installed in a boundary region between the inlet space and the discharge space, and controls the exhaust gas introduced into the inlet space to be bypassed to the discharge space when the pressure in the inlet space is greater than or equal to a preset pressure; It is characterized by including.

As an example, the control valve may include a through hole formed in a selected partition wall, a fixture fixedly installed at a position spaced apart from the through hole at the discharge space side, and the fixture in close contact with the through hole at the discharge space side. It characterized in that it includes an opening and closing opening installed to be slidably moved from the opening and a spring connected between the opening and closing opening and the compression operation at a set pressure or higher to separate the opening and closing opening from the through hole.

As an example, the purification filter includes a filter supporter having an insertion space, a plurality of inlet holes formed on a lower surface, an upper opening, and fixedly installed side by side along a longitudinal direction in an inner space of the main body, and A filter housing that is detachably mounted on the open top and has a plurality of discharge holes formed on the upper surface, and a filter accommodated in the filter housing and partially exposed to the lower portion of the filter housing and inserted into the insertion space of the filter supporter It is characterized by including a module.

As described above, the apparatus of the present invention has the effect of increasing the filtering efficiency of the exhaust gas by uniformly grinding the exhaust gas flowing into the main body into each filter area.

In addition, by improving the detachable structure of the filter, it is easy to remove and install when the filter is replaced, and there is an effect of providing convenience in maintenance of the device.

In addition, when the back pressure in the device rises, a bypass means that converts the movement path of the exhaust gas to the outlet side is installed inside the body, so that the installation space is not limited. Unlike a rupture plate that must be replaced, it can be used semi-permanently, so it is easy to operate and manage, and there is an effect of reducing costs in terms of maintenance as well.

1 is a side cross-sectional view schematically showing the device of the present invention.
Figure 2 is a side cross-sectional view showing the configuration of the guiding means according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the configuration of a guiding means according to another embodiment of the present invention.
Figure 4 is a side cross-sectional view showing a noise attenuation chamber according to an embodiment of the present invention.
5 is a side cross-sectional view showing the configuration of a removable purification filter according to an embodiment of the present invention.
6A and 6B are side cross-sectional views showing the configuration of a control valve according to an embodiment of the present invention.

Hereinafter, on the basis of the accompanying drawings the configuration and operation of the present invention will be described in more detail. In describing the present invention, terms or words used in the present specification and claims are the present invention based on the principle that the inventor can appropriately define the concept of terms in order to describe his or her invention in the best way. It must be interpreted as a meaning and concept consistent with the technical idea of

Referring to FIG. 1, the apparatus of the present invention comprises a main body 10, a plurality of purification filters 20 provided in the inner space of the main body 10 to collect and reduce particulate matter from the introduced exhaust gas, and the inner space. It is configured to include an induction means 30 for uniformly flowing the exhaust gas introduced into each purification filter (20).

The main body 10 is provided with an internal space and is provided with an inlet pipe 100 at one end and a discharge pipe 110 at the other end in communication with the internal space.

The main body 10 may have a conventional cylindrical structure. Preferably, the main body 10 has a structure in which the diameter gradually decreases toward one end and the other end, so that the exhaust gas does not stagnate at the corner portion of the inner space and a smooth flow can be induced.

The inlet pipe 100 of the main body 10 is directly connected to an exhaust pipe (not shown) extending from the generator diesel engine so that the exhaust gas discharged through the exhaust pipe directly flows into the inner space of the main body 10. .

Two or more of the purification filters 20 are arranged side by side along the longitudinal direction in the inner space of the main body 10 and reduce particulate matter of exhaust gas flowing through the inlet pipe 100 of the main body 10 To be discharged to the discharge pipe (110).

For example, the internal space of the main body 10 includes a mounting space 121 that allows each purification filter 20 to be installed in a vertical direction at the center, and is provided under the mounting space 121 and is provided in the inlet pipe 100 ) Is communicated with the inlet space 122 into which the exhaust gas is introduced, and the exhaust space provided above the mounting space 121 and through which the exhaust pipe 110 is communicated so that the exhaust gas passing through the purification filter 20 is discharged. Includes 123.

At this time, the inlet space 122 and the discharge space 123 are configured to have a structure that respectively surrounds one side and the other side of the mounting space 121 as shown in FIG. When a boundary is formed, the inner space further includes a partition wall 124 installed in the boundary region in order to divide and separate the boundary region between the inlet space 122 and the discharge space 123.

That is, the purification filter 20 reduces harmful substances by collecting particulate matter in the exhaust gas by allowing the exhaust gas to pass through and contact during the vertical movement of the exhaust gas from the inlet space 122 to the discharge space 123. It is to do.

Although not shown in the drawing, the purification filter 20 may be regenerated through a regeneration heater provided on the inlet side of the purification filter 20, that is, in the inlet space 122.

The regenerative heater is operated by receiving emergency power produced by the operation of the diesel generator, or is operated by receiving commercial power when the diesel generator is stopped, and heats up to a specific temperature required for regeneration of the purification filter 20. Is emitted, and it is possible to regenerate the purification filter 20 by heating the outside air or exhaust gas passing through the regeneration heater.

For example, particulate matter collected and accumulated in the purification filter 20 can be removed by combustion at a temperature of about 550° C., and the regeneration heater is preferably operated to generate heat at a temperature of about 600° C.

The regenerative heater conducts heat not only to the regenerative heater but also to the surrounding area through the above-described process, and heats the outside air introduced from the outside in the heated state or the exhaust gas introduced during the purification process of the exhaust gas. As the heated outdoor air or exhaust gas passes through the purification filter 20 according to the vertical movement direction, particulate matter accumulated in the purification filter 20 is burned and regenerated.

Here, the operation of the regeneration heater may be selectively performed by detecting a pressure in the inner space of the main body 10.

The exhaust gas introduced into the internal space of the main body 10 passes through the purification filter 20 to collect and remove particulate matter such as incompletely burned hydrocarbon. In this process, the particulate matter is When accumulated, the pressure in the inner space also increases in proportion to the accumulated amount.

Eventually, when it detects that the pressure in the internal space of the main body 10 reaches a preset upper limit, it is determined that regeneration of the purification filter 20 is required, and emergency power or commercial power is supplied to the regeneration heater to supply the purification filter 20. ) To be able to perform the regeneration process.

The number and arrangement structure of the purification filter 20 may be determined in consideration of the processing capacity of the device, and the collection method and the type of the purification filter 20 are suitable among various types of filters capable of collecting known particulate matter. One can be selected, and a detailed description thereof will be omitted.

Meanwhile, it is preferable that the purification filter 20 has a detachable structure in the inner space of the main body 10 for convenience of maintenance.

5, the purification filter 20 has an insertion space 202 therein, a plurality of inlet holes 201 are formed on the lower surface, the upper part is opened, and the length in the internal space of the main body 10 It includes a filter supporter 200 fixed and installed side by side along the direction.

In addition, the purification filter 20 includes a filter housing 210 that is detachably mounted on the opened upper portion of the filter supporter 200 and has a plurality of discharge holes 211 formed on the upper surface thereof, and the filter housing 210 And a filter module 230 that is accommodated in the interior and partially exposed to the lower portion of the filter housing 210 and inserted into the insertion space 202 of the filter supporter 200.

At this time, the upper portion of the filter supporter 200 adjacent to each other and the lower portion of the filter housing 210 may be formed with flange portions 203 and 213 whose diameters are enlarged, respectively, and the flange portions 203 and 213 A plurality of fastening holes are formed in the opposite part to allow the filter housing 210 to be fastened to the filter supporter 200 through bolt coupling, or a known fastening means such as a clip or clamp is mounted on the flanges 203 and 213. The filter housing 210 may be fastened to the filter supporter 200.

In addition, the purification filter 20 has an airtight packing 240 interposed between the flange portion 203 of the filter supporter 200 and the flange portion 213 of the filter housing 210 so that the purification process of the purification filter 20 To prevent the outflow of heavy exhaust gas.

As described above, according to the present embodiment, since it is easy to remove and install the filter module 230 when replacing the filter module 230 that substantially collects particulate matter, it is possible to provide convenience in maintenance of the purification filter 20, Even in the manufacturing process of the device, it is not necessary to directly install the filter module 230, and thus, a welding process or the like may be simplified.

In order to more effectively attach and detach the purification filter 20, an opening (not shown) is provided in the upper region of the main body 10 facing the filter housing 210, and a handle (not shown) is provided at the upper end of the filter housing 210. 220) is provided so that the operator can easily replace the filter housing 210.

On the other hand, the induction means 30 is mounted on the inlet side of the purification filter 20 and induces the introduced exhaust gas to flow uniformly to each purification filter 20, so that the collection operation of the purification filter 20 is performed. It is possible to prevent uneven performance in a certain area, and to prevent an increase in the back pressure of the exhaust gas due to the delay in the discharge as it induces smooth inflow and discharge of the exhaust gas.

Hereinafter, embodiments of the induction means 30 will be described with reference to FIGS. 2 and 3.

First, the guiding means 30 according to an embodiment of the present invention may include a plurality of guiding plates 31 that have a certain inclination and are spaced apart from each other as shown in FIG. 2.

The guide plate 31 has a plate shape and is mounted at a position spaced apart from the bottom of each purification filter 20 while facing the inlet pipe 100 in the inflow space 122, and upwards toward the purification filter 20. It is installed to have an inclined gradient. At this time, the guide plate 31 is configured such that the cross-sectional area increases from one side adjacent to the inlet pipe 100 to the other side.

The exhaust gas introduced through the inlet pipe 110 is hit by the guide plate 31 to change the direction of the fluid to the inlet side of each purification filter 20, thereby facilitating a smooth inflow of the exhaust gas.

At this time, the flow rate of the fluid decreases as it goes from the purification filter 20 closest to the inlet pipe 100 to the purification filter 20 furthest away. In this embodiment, each purification filter 20 can compensate for the reduced flow rate. The guide plate 31 is installed at the lower part of the, but the purifying filter 20 closest to the inlet pipe 100 is configured by configuring a larger cross-sectional area of the guide plate 31 installed at the lower part of the purifying filter 20 that is gradually farther away. The flow rate converted to the inlet side of) is minimized, and the flow rate converted in direction is maximized as the purification filter 20 is relatively farther away from the inlet pipe 100.

That is, in this embodiment, the larger the cross-sectional area of the guide plate 31 having a relatively far distance so that the ratio of the flow rate and the flow rate can be adjusted according to the distance of the purification filter 20, The overall exhaust gas flow distribution is to be uniform.

The guide means 30 according to another embodiment of the present invention has a plate shape as shown in FIG. 3 and crosses the inflow space 122 in a horizontal direction at a position spaced apart from the bottom of the plurality of purification filters 20. It is mounted so that it may be composed of a distribution plate 32 that divides and separates the inflow space 122 into two spaces.

In addition, the distribution plate 32 has a plurality of flow holes 33 formed in a portion facing each purification filter 20, wherein the flow hole 33 is from one side adjacent to the inlet pipe 100 to the other side. It is configured to increase its diameter as it goes.

The flow hole 33 of the distribution plate 32 allows exhaust gas introduced through the inlet pipe 100 to flow into the respective purification filters 20, and is disposed close to the inlet pipe 100 side. The flow hole 33 is configured to have a relatively smaller diameter than the flow hole 33 disposed close to the discharge pipe 110 side.

This is, considering that the flow rate of the introduced exhaust gas gradually decreases as the distance from the inlet pipe 100 increases, and the diameter of the flow hole 33 according to the distance is adjusted to adjust the passing flow rate. It is possible to enter a more uniform state by minimizing a relatively large amount of exhaust gas entering the purification filter 20 disposed adjacent to the inlet pipe 100 than the purification filter 20 disposed adjacent to the) side. .

In addition, in this embodiment, as mentioned above, the inflow space 122 is divided into two spaces by the distribution plate 32, of which the lower space is the noise attenuation chamber 50 as shown in FIG. 4. ).

That is, when the apparatus of the present invention operates, the noise reduction chamber 50 absorbs and reduces vibration and noise while the vibration and noise emitted from the diesel engine for a generator are introduced into the main body through the inlet pipe 100. In particular, when the exhaust gas is expanded by heat or when the engine's sudden output fluctuates, the function as a chamber is performed, thereby reducing the power of the engine and the pressure of the purification filter 20, thereby minimizing the generation of the load on the device. do.

As described above, the apparatus of the present invention realizes the uniformity of the flow distribution of the exhaust gas flowing into each purification filter 20 through the induction means 30 of the above-described embodiments, thereby protecting the melting of the apparatus as well as uniformity in each filter unit. By allowing one collection operation to take place, the filter performance can be maximized and the back pressure of the device can be optimized accordingly.

On the other hand, the device of the present invention is installed in the boundary area between the inlet space 122 and the discharge space 123, and when the pressure in the inlet space 122 is higher than a preset pressure, the exhaust gas introduced into the inlet space 122 is It may be configured to further include a control valve 40 that controls to be bypassed (BYPASS) to the discharge space (123).

The control valve 40 selectively communicates or closes the inflow space 122 and the discharge space 123 by a spring 430 operated in conjunction with the internal pressure.

Specifically, the control valve 40 is a through hole formed in any one of the partition walls 124 installed in the boundary region between the inlet space 122 and the discharge space 123 as shown in FIG. 6A. (400) and a fixture 410 fixedly installed at a position spaced apart from the through hole 400 from the side of the discharge space 123, and in close contact with the through hole 400 from the side of the discharge space 123 It includes an opening and closing opening 420 installed to be slidably moved from the fixture 410.

And the control valve 40 is connected between the fastener 410 and the opening 420 as shown in FIG. 6B and is compressed and operated at a pressure higher than a set pressure to space the opening 420 from the through hole 400, It includes a spring 430 that allows the opening 450 to be formed from the fixture 410 by the separation of the opening 420.

When the internal pressure is stable, the spring 430 is tensioned by a restoring force so that it can return to the original position of the opening 420, that is, a position in close contact with the through hole 400, so that the inlet space 122 and the discharge space ( 123) Closing the liver.

At this time, an annular airtight packing 440 is interposed between the through hole 400 and the opening 420 to prevent exhaust gas from flowing from the inlet space 122 to the discharge space 123 in the closed state of the through hole 400. To prevent it.

That is, the control valve 40 is installed in the partition wall 124 that divides the inflow space 122 and the discharge space 123 so that when the internal pressure of the inflow space 121 is out of the set range, the inflow space 122 By forming another flow path that communicates between the and the discharge space 123, the exhaust gas of the inlet space 122 does not move toward the purification filter 20, but is directly moved to the discharge space 123, thereby opening the discharge pipe 110. The internal pressure is adjusted by allowing it to be discharged to the outside through.

As described above, the device of the present invention can be used semi-permanently, unlike a rupture plate that must be replaced once it is ruptured, as in the prior art, so that it is not only advantageous in terms of maintenance of the device, but also can reduce maintenance costs. Bypass (BYPASS) piping is not required, thereby saving space and simplifying installation and operation.

It will be appreciated by those skilled in the art through the above description that various changes and modifications can be made without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be determined by the claims.

10: main body 20: purification filter
30: guide means 31: guide plate
32: distribution plate 33: flow hole
40: control valve 50: noise reduction chamber
100: inlet pipe 110: discharge pipe
121: mounting space 122: inflow space
123: discharge space 124: bulkhead
200: filter supporter 201: inlet hole
210: filter housing 211: discharge hole
230: filter module 400: through hole
410: fixture 420: opening and closing
430: spring

Claims (7)

A main body having an internal space provided and communicating with the internal space, each having an inlet pipe at one end and an outlet pipe at the other end;
A purification filter disposed in the inner space along the longitudinal direction and reducing particulate matter of the exhaust gas flowing through the inlet pipe of the main body and then discharged to the discharge pipe; And
Including; a guide means installed at a distance from the inlet side of the purification filter to induce the introduced exhaust gas to flow uniformly to each of the purification filters,
The inner space,
An installation space in which the purification filter is installed in the center, an inflow space in which exhaust gas is introduced by being provided under the installation space and in communication with the inlet pipe, and a purification filter provided in the upper part of the installation space and in communication with the discharge pipe It includes a discharge space through which the purified gas passing through is discharged and a partition wall for separating between the inlet space and the discharge space,
A control valve installed in a boundary region between the inlet space and the discharge space and for controlling the exhaust gas introduced into the inlet space to be bypassed to the discharge space when the pressure in the inlet space is greater than or equal to a preset pressure; and
The control valve,
A through hole formed in a selected partition wall, a fixture fixedly installed at a position spaced apart from the through hole at the discharge space side, an opening and closing hole installed to slide from the fixture and in close contact with the through hole at the discharge space side, and the fixture And a spring connected between the opening and closing openings and being compressed and operated at a pressure higher than a set pressure to separate the opening and closing openings from the through hole,
The purification filter,
A filter supporter having an insertion space, a plurality of inlet holes formed on a lower surface, an upper opening, and fixed side by side along the longitudinal direction in the internal space of the main body, and a detachably mounted upper surface of the filter supporter A filter housing having a plurality of discharge holes formed therein, and a part of the filter housing that is removably accommodated in the interior of the filter housing and is exposed to extend to the lower portion of the filter housing, and the exposed extended portion is inserted into the insertion space of the filter supporter. Between the filter module, a flange portion in which a plurality of fastening holes are formed while extending in diameter at the upper portion of the filter supporter adjacent to each other and the lower portion of the filter housing, and between the flange portion of the filter supporter and the flange portion of the filter housing An airtight packing interposed, a handle provided on an upper end of the filter housing, and an opening and closing opening provided in an upper region of the main body facing the filter housing.
delete The method of claim 1,
The induction means,
Flow uniformity, characterized in that it comprises a plurality of guide plates mounted at a position spaced apart from the bottom of each purification filter in the inflow space and configured to have a larger cross-sectional area from one side adjacent to the inlet pipe to the other side while having a constant inclination. Possible exhaust reduction device.
The method of claim 1,
The induction means,
It has a plate shape and is mounted so as to cross the inflow space in the transverse direction at a position separated from the bottom of the plurality of purification filters so that the inflow space is divided and separated into two spaces, and a plurality of And a distribution plate having a flow hole formed therein, and a distribution plate configured to increase the diameter of the flow hole from one side adjacent to the inlet pipe to the other side. delete delete delete

Images