KR102457046B1 - Particulate exhaust reduction device for generator - Google Patents

Abstract

The present invention relates to an exhaust gas reducing apparatus for a generator. The exhaust gas reducing apparatus for the generator according to one embodiment of the present invention comprises: a main body unit in which an exhaust gas discharged from an engine of the generator is introduced and purified; a first filtering unit provided at the interior of the main body unit to communicate with an inlet of the main body unit; a second filtering unit provided at the interior of the main body unit so as to be located in the front of the first filtering unit along the direction in which the exhaust gas flows into the main body unit; and a third filtering unit provided at the interior of the main body unit to be positioned in the front of the second filtering unit along the inflow direction of the exhaust gas. Centers of the main body unit, the inlet of the main body unit, and a gas supplying unit of the first filtering unit with respect to the inflow direction of the exhaust gas may be formed to be positioned on the same line or on a parallel line. Provided is the exhaust gas reducing apparatus, capable of reducing a back pressure and simplifying a structure.

Description

Smoke reduction device for generators {PARTICULATE EXHAUST REDUCTION DEVICE FOR GENERATOR}

The present invention relates to a soot reduction device for a generator, and more particularly, to a soot reduction device for a generator to which a reverse cyclone type is applied in order to improve soot collection, collection performance, safety and economic feasibility.

In general, the demand for diesel engines is continuously increasing because they can be operated with high efficiency and high output. In addition, since diesel is cheaper than gasoline in the domestic oil refining market, it has advantages in terms of fuel efficiency and efficiency.

Since these diesel engines contain nitrogen oxides (NOx) and particulate matter (PM) that cause air pollution in the exhaust gas, it is mandatory to install a smoke reduction device to reduce them. Typical examples of soot reduction devices are diesel particulate filter (DPF) and diesel oxidation catalyst (DOC).

Among them, Diesel Particulate Filter (DPF) is currently the most efficient and technology for reducing particulate matter approaching practical use. The diesel particulate filter is a technology that repeats the cycle of collecting particulate matter emitted from a diesel engine with the filter, burning (regenerating) it, and collecting particulate matter again, and has the effect of reducing smoke by more than 90%.

In addition, Diesel Oxidation Catalyst (DOC) is a technology that has already been proven in its technical effects and performance because it is basically the same technology as the oxidation catalyst (two-way catalyst) technology used before the development of the three-way catalyst in gasoline engines. . Oxidation catalyst functions to remove hydrocarbons and carbon monoxide by using oxygen in exhaust gas due to the catalytic effect of platinum (Pt) and palladium (Pd).

However, durability and economic feasibility of a soot reduction device using a diesel particulate filter and a diesel oxidation catalyst is an obstacle to practical use. In addition, as particulate matter is collected in the filter, back pressure is applied to the engine, thereby sacrificing output and fuel consumption to some extent.

In order to solve this problem, the present applicant has developed a soot reduction device for a generator (hereinafter referred to as "existing soot reduction device") disclosed in Korean Patent Registration No. 10-1583540.

However, in the existing smoke reduction device, the back pressure according to the flow of exhaust gas is increased because the first filtration part to which the cyclone type is applied is formed in a standing state inside the body part, and the structure of the first filtration part to which the cyclone type is applied is complicated. There is a problem with termination. That is, the back pressure of the flow is because the exhaust gas collects foreign substances as it travels through the long passage of the cyclone provided in the first filter unit with a positive pressure type flow that pushes the exhaust gas from the engine of the generator to the soot reduction device. There is a problem with this rising. In order to reduce the back pressure, the size of the smoke reducing device must be increased. If the size or diameter of the main body is increased, there is a space constraint in which the smoke reducing device is installed.

In addition, there is a problem in that the flow resistance of the first filter unit using the cyclone method among the existing smoke reduction devices is large because the flow direction of the exhaust gas is bent in the order of 90 degrees -> 180 degrees -> 90 degrees.

In addition, there is a problem in that the existing smoke reduction device cannot timely relieve excessive pressure generated when the diesel particulate filter (DPF) is clogged.

The present applicant has proposed the present invention in order to solve the above problems.

Korean Patent No. 10-1583540 (Registration Date: 2016.01.04.)

The present invention has been proposed to solve the above problems, and provides a soot reduction device for a generator capable of reducing back pressure and simplifying the structure by applying a reverse cyclone method.

The present invention provides a soot reduction device for a generator using low back pressure inertia.

The present invention provides a soot reduction device for a generator that increases the lifespan of a filter and is easy to clean.

The present invention provides a soot reduction device for a generator capable of protecting the engine of the generator and securing the power generation output in an emergency by installing a valve capable of automatically responding to the internal pressure.

A soot reduction device for a generator according to an embodiment of the present invention for achieving the above object, the exhaust gas discharged from the engine of the generator is introduced and purified body portion; a first filtering unit provided inside the main body to communicate with the inlet of the main body; a second filtering unit provided inside the main body to be positioned in front of the first filtering unit along a direction in which the exhaust gas flows into the main body; and a third filtering part provided inside the body part so as to be positioned in front of the second filtering part along the inflow direction of the exhaust gas, wherein the body part with respect to the inflow direction of the exhaust gas and the inlet port of the body part and a center of the gas supply unit of the first filter unit may be formed to be located on the same line or on a parallel line.

The first filtering unit may include: the gas supply unit having one end connected to the inlet of the main body to increase the back pressure of the exhaust gas; a housing formed in a cylindrical shape such that the exhaust gas introduced through the gas supply unit rotates; a foreign material discharge unit formed in the housing to send the primary foreign material centrifuged from the exhaust gas to the collecting unit along the inner circumferential surface of the housing; and a gas discharge unit formed in the housing to discharge the exhaust gas from which the primary foreign material is separated to the outside of the housing, wherein the other end of the gas supply unit is spaced apart from one end of the housing and is inside the housing. However, the center of the gas supply unit and the housing with respect to the inflow direction of the exhaust gas may be formed to be positioned on the same line or on a parallel line.

The foreign material discharge part and the gas discharge part may be formed in the cylindrical part of the housing.

The second filter unit for removing or collecting secondary foreign matter remaining in the exhaust gas discharged from the gas discharge unit may include at least one metal filter unit.

The second filtering unit includes a filter frame to which the metal filter unit is fixed or mounted, and a casing having one end connected to the filter frame and accommodating the metal filter unit, wherein the filter frame and the casing are mounted on the main body or the It may be provided to be separated from the body part.

The third filtering unit for removing or collecting tertiary foreign substances remaining in the exhaust gas that has passed through the second filtering unit may include at least one ceramic filter unit and at least one metal filter unit.

The ceramic filter unit may be provided in a greater number than the metal filter unit.

The third filtering unit may include an overpressure preventing unit provided between the ceramic filter unit and the metal filter unit.

The overpressure preventing unit may include a valve located at a rear side along an inflow direction of the exhaust gas and a filter unit located at a front side of the valve.

The valve and the metal filter unit are provided so that the center of the exhaust gas inflow direction coincides with each other, and the valve is opened by the pressure formed between the third filtering unit and the second filtering unit or the third filtering unit. It can open in case of blockage.

The collecting part may be provided to be mounted on the main body or separated from the main body.

The exhaust gas reduction device for a generator according to the present invention can reduce the back pressure and simplify the internal structure by having the first filtering unit to which the reverse cyclone method is applied.

The soot reduction device for a generator according to the present invention can improve the foreign material collection performance, secure safety, and improve economic efficiency.

The exhaust gas reduction device for a generator according to the present invention may increase the collection efficiency of foreign substances contained in exhaust gas while sequentially passing through the first to third filtering units. In the first filtration unit using the reverse cyclone method, coarse particles (PM10 or more) and oil components can be collected, and in the second filtration unit having a metal filter, 30% or more of coarse particles can be collected, and the metal filter and ceramic In the third filtration unit equipped with all filters, it is possible to collect 90% or more of fine particles (less than PM10).

The smoke reduction device for a generator according to the present invention can secure safety by providing an overpressure prevention part in the third filtering part, as well as protect the engine of the generator and secure the power generation output in case of an emergency.

In the generator soot reduction device according to the present invention, the foreign substances collected by the first filter unit can be separately collected and the second filter unit is detachable, so that the life of the filter can be extended and it is easy to clean.

1 is a diagram schematically showing the structure of a soot reduction device for a generator according to an embodiment of the present invention.
2 is a view for schematically explaining the operation of the soot reduction device for a generator according to an embodiment of the present invention.
3 is a view for explaining the first filtering unit of the soot reduction device for a generator according to an embodiment of the present invention.
4 is a view showing a second filtration unit of the exhaust gas reduction device for a generator according to an embodiment of the present invention.
FIG. 5 is a view illustrating a metal filter unit of the second filtering unit according to FIG. 4 .
FIG. 6 is a view illustrating a modified example of the second filtering unit according to FIG. 4 .
7 is a view showing a third filtering unit of the soot reduction device for a generator according to an embodiment of the present invention.
8 is a view illustrating a ceramic filter unit of the third filtering unit according to FIG. 7 .
9 is a view illustrating a modified example of the ceramic filter unit according to FIG. 8 .
10 is a view illustrating a valve applied to an overpressure preventing unit of a soot reduction device for a generator according to an embodiment of the present invention.
11 is a view for explaining an operation process of the valve according to FIG. 10 .
12 is a view for explaining an overpressure preventing unit of the soot reduction device for a generator according to an embodiment of the present invention.

Advantages and/or features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In addition, preferred embodiments of the present invention to be implemented below are already provided in each system function configuration in order to efficiently describe the technical components constituting the present invention, or system functions normally provided in the technical field to which the present invention pertains. The configuration is omitted as much as possible, and the functional configuration to be additionally provided for the present invention will be mainly described. If a person of ordinary skill in the art to which the present invention pertains, it will be possible to easily understand the functions of the conventionally used components among the functions omitted not shown below, and also the components omitted as described above. Relationships between elements and components added for purposes of the present invention will also be clearly understood.

In addition, in the following description, the term "transmission", "communication", "transmission", "reception" and other similar meanings of signals or information means that signals or information are directly transmitted from one component to another. as well as passing through other components. In particular, to “transmit” or “transmit” a signal or information to a component indicates the final destination of the signal or information and does not imply a direct destination. The same is true for "reception" of signals or information.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the structure of a soot reduction device for a generator according to an embodiment of the present invention, Figure 2 is a view for schematically explaining the operation of the soot reduction device for a generator according to an embodiment of the present invention , FIG. 3 is a view for explaining a first filtering unit of the generator soot reduction device according to an embodiment of the present invention, FIG. 4 is a view showing a second filtering unit of the generator soot reduction device according to an embodiment of the present invention Figure 5 is a view showing a metal filter unit of the second filtering unit according to Fig. 4, Fig. 6 is a view showing a modified example of the second filtering unit according to Fig. 4, Fig. 7 is a power generation according to an embodiment of the present invention A view showing the third filtration unit of the soot reduction device for air use, FIG. 8 is a view showing a ceramic filter unit of the third filtration unit according to FIG. 7, FIG. 9 is a view showing a modified example of the ceramic filter unit according to FIG. 8, FIG. 10 is a view showing a valve applied to an overpressure preventing unit of a soot reduction device for a generator according to an embodiment of the present invention, FIG. 11 is a view for explaining an operation process of the valve according to FIG. 10, and FIG. It is a view for explaining the overpressure prevention unit of the soot reduction device for a generator according to an embodiment.

A soot reduction device 100 for a generator according to an embodiment of the present invention to be described below (hereinafter referred to as a "soot reduction device") is a device for removing soot or foreign substances contained in exhaust gas discharged from an engine of a diesel generator. . However, the smoke reduction device 100 according to an embodiment of the present invention may be used to reduce the exhaust gas exhausted from the engine for a diesel generator as well as the engine for a diesel vehicle.

The smoke reduction device 100 according to an embodiment of the present invention exhibits a three-stage collection function of the reverse cyclone method in order to improve the soot collection performance, safety, and economic feasibility contained in exhaust gas, and has a three-stage safety function and can reduce the back pressure by using the low back pressure inertia.

1 and 2, in the exhaust gas reduction device 100 for a generator according to an embodiment of the present invention, the exhaust gas (G) discharged from the engine 10 of the generator is introduced and purified by the body part 101 ); a first filtering unit 120 provided inside the body unit 101 so as to communicate with the inlet 102 of the body unit 101; a second filtering unit 140 provided inside the body unit 101 so that the exhaust gas (G) is located in front of the first filtering unit 120 in a direction in which the exhaust gas (G) flows into the body unit 101 ; and a third filtering unit 160 provided inside the main body 101 so as to be located in front of the second filtering unit 140 along the inflow direction of the exhaust gas.

1 to 3, 11 and 12, the flow direction of the exhaust gas (G, G1, G2, G3) is indicated by one-way arrows (dotted arrows and thick arrows). Hereinafter, "forward" means the direction in which the head of the arrow points, and "rear" means the direction in which the tail of the arrow points.

1 and 2, the exhaust gas G discharged from the engine 10 flows from left to right. Here, the flow direction of the exhaust gas is from the left to the right in the same way as the arrow direction shown in FIGS. 1 and 2 .

The main body 101 of the soot reduction device 100 according to an embodiment of the present invention is preferably formed as a hollow cylindrical member, but may have a rectangular cross-section.

The main body 101 is formed to be elongated along the flow direction of the exhaust gas, and an inlet 102 and an outlet 103 may be formed at both ends. The inlet 102 is provided on one side of the engine 10 so that exhaust gas discharged from the engine 10 flows into the interior of the main body 101 through the inlet 102 . The exhaust gas G3 introduced into the main body 101 and purified while passing through the first to third filtering units 120 , 140 , 160 exits the main body 101 through the outlet 103 .

The diameter of the outlet 103 is smaller than the diameter of the main body 101, but before passing through the outlet 103, the outlet 103 and one end of the main body 101 are separated from each other to prevent the exhaust gas from flowing and the pressure to increase. It may be connected by a cone part 104 .

In the soot reduction device 100 according to an embodiment of the present invention, the first to third filtering units 120 , 140 , and 160 are sequentially disposed inside the main body 101 , and the exhaust gas discharged from the engine 10 flows. They are arranged on almost the same line along the direction.

Exhaust gas (G) discharged from the engine 10 first passes through the first filter unit 120 and then passes through the second filter unit 140 and the third filter unit 160 sequentially to remove foreign substances or soot. It can be captured or removed.

In the smoke reduction device 100 according to an embodiment of the present invention, when the main body 101 is viewed from the inlet 102 side, the center of the inlet 102 and the gas supply unit 123 of the first filtration unit 120 is located on the same line. That is, the center of the inlet 102 of the main body 101 and the gas supply unit 123 of the first filtering unit 120 is located on a line passing through the center of the main body 101 .

In this way, the main body 101, the inlet 102 of the main body 101, and the first filtering unit ( The center of the gas supply unit 123 of the 120 may be formed to be located on the same line or on a parallel line.

As shown in FIGS. 1 and 2 , the exhaust gas G discharged from the engine 10 is exhausted while passing through the first filter unit 120 in the smoke reduction device 100 according to an embodiment of the present invention. Coarse particles (PM10 or more particles) or oil components (sticky elements) contained in the gas (G) can be removed. Exhaust gas G1 from which coarse particles or oil components are removed may be removed from coarse particles while passing through the second filtering unit 140 . The second filtering unit 140 may reduce the coarse particles included in the exhaust gas G1 by about 30%. The exhaust gas G2 that has passed through the second filtering unit 140 may be removed from fine particles (particles less than PM10) while passing through the third filtering unit 160 . The third filtering unit 160 may collect 90% or more of the fine particles included in the exhaust gas G2. The exhaust gas G3 that has passed through the third filtering unit 160 may be discharged through the outlet 103 of the main body 101 .

On the other hand, referring to FIGS. 1 to 3 , the first filtering unit 120 collects foreign substances contained in the exhaust gas by using a cyclone method. is placed. That is, since the longitudinal direction of the first filtration unit 120 and the longitudinal direction of the body unit 101 coincide with each other, in order to install the first filtration unit 120 inside the body unit 101 , the main body unit 101 . There is no need to increase the diameter or cross-sectional area of

In the case of the existing soot reduction device, since the longitudinal direction of the first filtering unit coincides with the radial direction of the main body, the diameter or cross-sectional area of the main body had to be increased in order to install the first filtering unit.

In the case of the existing smoke reduction device, the first filtration unit using the cyclone method is installed in a standing state (vertical type) inside the main body, whereas in the case of the smoke reduction device 100 according to an embodiment of the present invention, the first Since the filtering unit 120 is installed in a state (horizontal type) lying on the inside of the body unit 101 , there is no need to enlarge the body unit 101 .

1 to 3 , in the first filtering unit 120 of the soot reduction device 100 according to an embodiment of the present invention, the exhaust gas gas supply unit 123 and the gas discharge unit 125 are conventional. It is opposite to the 1st filtration part of a soot reduction device. That is, since the first filtration unit 120 of the smoke reduction device 100 according to an embodiment of the present invention operates in a reverse cyclone type, it is to be disposed in a lying state inside the body unit 101 . can

Referring to FIG. 3 , the first filtering unit 120 includes a gas supply unit 123 having one end connected to the inlet 102 of the body unit 101 to increase the back pressure of the exhaust gas G; a housing 121 formed in a cylindrical shape such that the exhaust gas (G) introduced through the gas supply unit 123 rotates; a foreign material discharge unit 126 formed in the housing 121 to send the primary foreign material P centrifuged from the exhaust gas G to the collecting unit 105 along the inner circumferential surface of the housing 121; and a gas discharge unit 125 formed in the housing 121 to discharge the exhaust gas G1 from which the primary foreign material P is separated to the outside of the housing 121 . Here, the primary foreign material (P) may include coarse particles or oil components contained in the exhaust gas (G).

The housing 121 of the first filtration unit 120 has a cylindrical shape on the side into which the exhaust gas flows, while the opposite side has a conical shape. One end of the conical portion 122 of the housing 121 is blocked, unlike in the case of the existing smoke reduction device. In the case of the existing smoke reduction device, foreign substances are discharged through the conical portion of the housing. In the case of the first filtering unit 120 shown in FIG. 3 , foreign substances are discharged through the conical portion 122 of the housing 121 can't

The conical portion 122 of the housing 121 serves to induce the exhaust gas G to make a cyclone orbital motion.

The other end 124 of the gas supply unit 123 provided inside the housing 121 to have a center coincident with the center of the housing 121 is spaced apart from one end of the housing 121 , that is, one end of the conical part 122 . It is positioned inside the housing 121 in a state of being

When the housing 121 is viewed from the left, the center of the gas supply unit 123 and the housing 121 with respect to the inflow direction of the exhaust gas G may be positioned on the same line or on a parallel line.

In FIG. 3 , a thick solid arrow indicates a flow direction of the primary foreign material P included in the exhaust gas G, and a dotted arrow indicates a flow direction of the exhaust gas G and G1.

The exhaust gas (G) introduced into the housing 121 through the gas supply unit 123 collides with the conical portion 122 of the housing 121 to create a cyclone flow between the gas supply unit 123 and the housing 121 . rotational motion in the space of The primary foreign material (P) containing coarse particles or oil components contained in the exhaust gas (G) during this turning movement is centrifugally collected and collected in the lower part of the housing (121). The primary foreign material P collected in the lower portion of the housing 121 is discharged from the housing 121 through the foreign material discharge unit 126 and then collected in the collecting unit 105 .

The exhaust gas G1 from which the primary foreign material is removed may be discharged from the housing 121 through the gas discharge unit 125 .

Referring to FIG. 3 , the foreign material discharge unit 126 and the gas discharge unit 125 of the first filtering unit 120 may be formed in a cylindrical portion of the housing 121 .

The first filtration unit 120 of the soot reduction device 100 according to an embodiment of the present invention pushes the exhaust gas G from the engine 10 and sends it to the first filtration unit 120 cyclone flow in a positive pressure manner. It is not necessary to install a suction fan on the gas discharge unit 125 side because it forms It is possible to improve the effect of collecting foreign substances because the flow of

In addition, since the first filter unit 120 uses the reverse cyclone method, the change in the flow direction (flow bend) of the exhaust gas is not severe. That is, since the flow direction of the exhaust gas introduced into the gas supply unit 123 is bent at 90 degrees and then again bent at 90 degrees to be discharged to the gas discharge unit 125 , the flow resistance is reduced by half compared to the existing soot reduction device. In the case of the existing soot reduction device, after the exhaust gas enters the first filter unit, the flow direction of the exhaust gas is bent by 90 degrees, then bent by 180 degrees, and then bent again by 90 degrees and discharged.

As described above, the first filtering unit 120 of the soot reduction device 100 according to an embodiment of the present invention uses a reverse cyclone method that does not interfere with the flow of exhaust gas, so that the back pressure is low and the exhaust of the engine 10 is low. The gas flow is smooth and does not interfere with the output.

The exhaust gas G1 from the gas discharge unit 125 of the first filter unit 120 still contains soot (foreign substances) such as coarse particles or fine particles. The exhaust gas G1 discharged from the first filtering unit 120 passes through the second filtering unit 140 provided in the main body 101 .

The second filter unit 140 may remove or collect secondary foreign matter remaining in the exhaust gas G1 discharged from the gas discharge unit 125 of the first filter unit 120 . Here, the secondary foreign material includes coarse particles remaining in the exhaust gas G1, and the second filtering unit 140 may remove or collect about 30% of the coarse particles.

Unlike the first filtering unit 120 , the second filtering unit 140 and the third filtering unit 160 may remove or collect foreign substances using a filter.

The second filter unit 140 may include at least one metal filter unit 150 . Here, the second filtering unit 140 may be provided with an area corresponding to or equal to the cross-sectional area of the main body 101 (a cross-sectional area in a direction perpendicular to the longitudinal direction of the main body). However, the total area of the metal filter unit 150 constituting the second filtering unit 140 may be the same as the cross-sectional area of the main body 101 or may be smaller than the cross-sectional area of the main body 101 .

As shown in FIG. 2 , the second filtering unit 140 may be provided in a form detachable from the main body 101 (refer to the double arrow in FIG. 2 ).

Referring to FIG. 4 , the second filter unit 140 includes a filter frame 141 to which the metal filter unit 150 is fixed or mounted, and one end is connected to the filter frame 141 and accommodates the metal filter unit 150 . It may include a casing 142 that does. Here, the filter frame 141 and the casing 142 may be mounted on the main body 101 or provided to be separated from the main body 101 .

The second filter unit 140 may include at least one metal filter unit 150 accommodated in the casing 142 . A filter frame 141 for fixing the metal filter unit 150 accommodated in the casing 142 may be connected to an open end of the casing 142 .

The filter frame 141 and the casing 142 may be provided in a shape that matches the shape of the cross-section of the main body 101 (a cross-section in a direction perpendicular to the longitudinal direction of the main body, hereinafter the same). For example, if the cross-sectional shape of the main body 101 is circular, the filter frame 141 may be formed in a disk shape and the casing 142 may be formed in a cylindrical shape.

Referring to FIG. 4 , at least one metal filter unit 150 is disposed on the filter frame 141 , and the metal filter unit 150 may be provided to be evenly disposed over the entire area of the filter frame 141 . At this time, it is preferable that the metal filter unit 150 is arranged as closely as possible in consideration of the size (area) of the filter frame 141 and the metal filter unit 150 .

Referring to FIG. 5 , the metal filter unit 150 may include a metal filter 156 provided inside the hollow filter case 151 . Although not shown, fixing members (not shown) for preventing the metal filter 156 from being separated from the filter case 151 may be installed at both ends of the filter case 151 .

Meanwhile, the filter case 151 is provided in a cylindrical shape, and the shape of the filter case 151 may vary depending on the cross-sectional shape of the main body 101 . If the cross-sectional shape of the main body 101 is a rectangle, the second filtering unit 140 may be provided in a shape as shown in FIG. 6 . That is, the filter frame 141 is provided as a rectangular plate, the casing 142 is provided as a hexahedral hollow member, and the metal filter unit 150 may also be provided in a hexahedral shape.

Since the smoke reduction device 100 according to an embodiment of the present invention is a cartridge type in which the second filter unit 140 is detachable from the body unit 101, the metal filter unit 150 is easy to clean and the metal filter unit It is possible to increase the life of (150). That is, since the second filter unit 140 is removed from the body unit 101 to clean the metal filter unit 150 , the second filter unit 140 can be mounted back to the body unit 101 . The 150 can be easily cleaned and the service life can be extended.

The metal filter 156 may be formed of a metal material such as SUS, and may be filled in the casing 142 in a mesh type.

Since a certain amount of pores exist in the metal filter 156 of the metal filter unit 150 , the metal filter 156 may collect coarse particles, but fine particles may not. Fine particles that are not removed by the second filtration unit 140 may be collected or removed by the third filtration unit 160 .

The exhaust gas G2 that has passed through the second filtering unit 140 may be removed from fine particles while passing through the third filtering unit 160 . As such, the third filtering unit 160 for removing or collecting tertiary foreign substances remaining in the exhaust gas G2 that has passed through the second filtering unit 140 includes at least one ceramic filter unit 170 and at least one It may include a metal filter unit 150 .

Like the second filtering unit 140 , the third filtering unit 160 may correspond to or have the same cross-sectional area of the main body 101 . However, the total area of the ceramic filter unit 170 and the metal filter unit 150 constituting the third filtering unit 160 may be the same as the cross-sectional area of the main body 101 or smaller than the cross-sectional area of the main body 101 . may be

Referring to FIG. 7 , the third filter unit 160 has one end connected to the filter frame 161 and the filter frame 161 to which the ceramic filter unit 170 and the metal filter unit 150 are fixed or mounted, and has a ceramic filter unit. It may include a casing (not shown) accommodating the filter unit 170 and the metal filter unit 150 . Here, the casing may be provided in the same shape as the casing 142 of the second filtering unit 140 .

The metal filter unit 150 of the third filtering unit 160 has the same shape and structure as the metal filter unit 150 of the second filtering unit 140 .

Referring to FIG. 8 , the ceramic filter unit 170 of the third filter unit 160 includes a ceramic filter 176 and a ceramic filter 176 provided in the hollow filter case 171 in the filter case 171 . A fixing member 172 that prevents separation may be installed at both ends of the filter case 171 that is opened. The fixing member 172 may be provided in a ring shape to contact and support the edge of the ceramic filter 176 .

As shown in FIG. 8 , a plurality of holes (not shown) are formed at one end of the ceramic filter 176 , through which exhaust gas G2 may be introduced. Since the other end of the hole formed at one end is blocked, the fine particles included in the exhaust gas G2 may be collected in the ceramic filter 176 .

Since the air permeability of the ceramic filter 176 is lower than that of the metal filter 156, the use time of the ceramic filter 176 is long, and if the amount of foreign matter collected inside the ceramic filter 176 increases, the ceramic filter 176 may be clogged. . When the ceramic filter 176 is clogged, the exhaust gas G2 does not pass through the third filtering unit 160 , and the amount of exhaust gas present between the second filtering unit 140 and the third filtering unit 160 decreases. As it increases, the back pressure applied to the third filtering unit 160 increases. Such an increase in back pressure may cause not only an abnormality of the smoke reduction device 100 but also an abnormality of the engine 10 .

The third filtration unit 160 of the smoke reduction device 100 according to an embodiment of the present invention also includes the metal filter unit 150 together with the ceramic filter unit 170, so that the ceramic filter 176 is clogged. back pressure can be reduced. Because the air permeability of the metal filter 156 is superior to that of the ceramic filter 176, the exhaust gas that cannot pass through the ceramic filter 176 because the ceramic filter 176 is clogged passes through the metal filter 156 to reduce the back pressure. can As such, the third filter unit 160 may also serve as a safety valve in case of an emergency in which the back pressure increases by providing the metal filter unit 150 together with the ceramic filter unit 170 .

The ceramic filter unit 170 of the third filter unit 160 is preferably provided in a greater number than the metal filter unit 150 . The third filtration unit 160 needs to remove the fine particles of the exhaust gas, but if the metal filter unit 150 is larger than the ceramic filter unit 170 , the fine particles cannot be efficiently collected. Accordingly, by disposing more ceramic filter units 170 than metal filter units 150 , it is possible to secure fine particle collection performance.

The role of the metal filter unit 150 in the third filter unit 160 is to reduce the back pressure in an emergency rather than to collect foreign substances. Accordingly, the ceramic filter unit 170 may be provided in a greater number than the metal filter unit 150 . In this case, it is preferable that the number of the ceramic filter unit 170 and the metal filter unit 150 is about 8:2.

Referring to FIG. 7 , at least one metal filter unit 150 and a ceramic filter unit 170 are disposed on the filter frame 161 , and the ceramic filter unit 170 is uniformly disposed over the entire area of the filter frame 161 . ) and a metal filter unit 150 may be provided. At this time, it is preferable that the ceramic filter unit 170 and the metal filter unit 150 are arranged as closely as possible in consideration of the size (area) of the filter frame 161 , the ceramic filter unit 170 , and the metal filter unit 150 . .

Referring to FIG. 8 , the filter case 171 of the ceramic filter unit 170 is provided in a cylindrical shape, and the shape of the filter case 171 may vary depending on the cross-sectional shape of the body unit 101 . If the cross-sectional shape of the body part 101 is a quadrangle, the ceramic filter part 170 may be provided in a hexahedral shape as shown in FIG. 9 . That is, the filter case 171 and the ceramic filter 176 may be provided in a hexahedral shape. In this case, the filter frame 161 may also be provided in the form of a rectangular plate.

On the other hand, the smoke reduction device 100 according to an embodiment of the present invention is a front end of the third filtering unit 160, that is, between the second filtering unit 140 and the third filtering unit 160, the exhaust gas (G2) An overpressure prevention unit 190 may be included to prevent the back pressure from increasing due to the increase.

7 , the third filtering unit 160 may include an overpressure preventing unit 190 provided between the ceramic filter unit 170 and the metal filter unit 150 . Like the ceramic filter unit 170 and the metal filter unit 150 , the overpressure prevention unit 190 may be provided in a fixed form to the filter frame 161 .

The third filter unit 160 is provided with the metal filter unit 150 to not only exert a back pressure adjustment function, but also include an overpressure prevention unit 190 to relieve excessive pressure applied when the metal filter unit 150 is also clogged. have. That is, the back pressure generated when the ceramic filter unit 170 of the third filter unit 160 is clogged or does not function normally may be relieved or adjusted by the metal filter unit 150 , and the ceramic filter unit 170 . Back pressure generated when both the metal filter unit 150 and the metal filter unit 150 are blocked or do not function normally may be resolved or adjusted by the overpressure prevention unit 190 .

As shown in FIG. 2 , the overpressure prevention unit 190 is located at the rear along the inflow direction of the exhaust gas G2 (see the dotted arrow in FIG. 2 ) and the valve 180 in front of the valve 180 . It may include a filter unit 195 positioned. That is, the overpressure preventing unit 190 may be provided in the order in which the exhaust gas G2 meets the valve 180 first and the filter unit 195 when the valve 180 is opened.

The overpressure prevention unit 190 may include a valve 180 and a filter unit 195 arranged in a line. That is, the overpressure prevention unit 190 is disposed in line with the valve 180 and the valve 180 provided outside the inlet of the hollow case 191 (see FIG. 12 ) and the filter provided inside the hollow case 191 . part 195 . The filter unit 195 of the overpressure prevention unit 190 may be formed of only the metal filter 156 or the ceramic filter 176 accommodated in the hollow case 191 without a separate filter case.

The valve 180 and the filter unit 195 of the overpressure prevention unit 190 may be provided so that centers of the exhaust gas G2 in the inflow direction coincide with each other.

The valve 180 of the overpressure preventing unit 190 may be opened when the pressure applied to the inlet side of the third filtering unit 160 is excessively increased. That is, the valve 180 is a bypass valve or a check valve that is automatically opened and closed in response to internal pressure.

An example of a valve 180 is shown in FIG. 10 . Referring to FIG. 10 , the valve 180 includes a first body 181 having a flow path 189 formed in the middle portion, a second body 183 fastened to the first body 181 , and the first body 181 . It may include an opening/closing member 188 provided inside to open and close the flow path 189 and an elastic member 187 elastically supporting the movement of the opening/closing member 188 .

One end of the second body 183 is engaged with the edge of the flow path 189 of the first body 181 , and the other end of the second body 183 is positioned at the lower end of the first body 181 . In this case, a plurality of bridge members 184 may be radially formed at the other end of the second body 183 with respect to the center. A through hole 185 (refer to FIG. 11 ) may be formed between the bridge members 184 .

A guide rod 186 may be formed to extend long toward the bridge member 184 at the center of the rear surface of the opening and closing member 188 . One end of the guide rod 186 is connected to the rear surface of the opening and closing member 188, and the other end of the guide rod 186 is provided to pass through a guide hole (not shown) formed in a portion to which one end of the bridge member 184 is connected. can

The elastic member 187 may be provided as a compression coil spring into which the guide rod 186 is inserted. One end of the elastic member 184 provided in the form of a compression coil spring is supported by the rear surface of the opening/closing member 188, and the other end is supported by the portion where one end of the bridge member 184 is connected, that is, the portion where the guide hole is formed. can be

The valve 180 may be opened by the pressure of the exhaust gas G2 formed between the third filtering unit 160 and the second filtering unit 140 , or may be opened when the third filtering unit 160 is blocked. To this end, the valve 180 is provided such that the opening/closing member 188 faces the second filtering unit 140 .

Even if the third filter unit 160 operates normally or the ceramic filter unit 170 of the third filter unit 160 is blocked, when the metal filter unit 150 is not blocked, the valve 180 does not operate. That is, since the elastic member 187 pushes the opening and closing member 188 toward the first body 181 as shown in (a) of FIG. 11 , the flow path 189 of the first body 181 is closed. . Accordingly, the exhaust gas G2 cannot pass through the flow path 189 and the through hole 185 of the valve 180 .

On the other hand, if the third filtration unit 160 does not operate normally or the ceramic filter unit 170 and the metal filter unit 150 of the third filtration unit 160 are both clogged, the As the exhaust gas G2 is concentrated, the back pressure is excessively increased. When the pressure rises and reaches the reference value, the opening/closing member 188 moves toward the second body 183 as the elastic member 187, that is, the compression coil spring is compressed, and the flow path 189 is opened. In this case, the exhaust gas G2 enters the flow path 189 and then passes through the through hole 185 and passes through the valve 180 (see (b) of FIG. 11 ).

As such, when excessive pressure is applied to the third filtering unit 160 , the valve 180 is opened to relieve the overpressure. That is, the force due to overpressure pushes the opening/closing member 188 to open the valve 180, and the spring constant of the elastic member 187, that is, the compression coil spring, in accordance with the safety design condition or set pressure of the smoke reduction device 100. You need to decide the value.

In the smoke reduction device 100 according to an embodiment of the present invention, the internal pressure automatic opening/closing valve 180 is installed in the overpressure prevention part 190 formed in the third filtering part 160 , and the set pressure (for example, , 60 millibar (mbar)), the valve 180 is automatically opened and closed, thereby protecting the engine 10 and securing the power generation output in an emergency.

Here, the exhaust gas G2 passes through the valve 180 in one direction, but cannot pass through the valve 180 in the opposite direction. In the case of FIG. 11 , the exhaust gas G2 may pass through the valve 180 from left to right, but may not pass through the valve 180 from right to left. As such, the valve 180 preferably has the form of a check valve or a bypass valve.

The components constituting the valve 180, including the elastic member 187, are preferably formed of a heat-resistant material capable of withstanding up to 500°C.

On the other hand, as shown in (b) of FIG. 11 , when the valve 180 operates to relieve overpressure, the exhaust gas G2 passing through the valve 180 is in a state in which fine particles are not removed. Therefore, when the valve 180 of the overpressure prevention unit 190 operates, there is a problem in that the exhaust gas G2 in which the fine particles are present is discharged from the body unit 101 . To solve this problem, the overpressure prevention unit 190 of the third filtering unit 160 may include a filter unit 195 disposed at the outlet end of the valve 180 .

As shown in FIG. 12 , the exhaust gas G2 passing through the through hole 185 of the valve 180 passes through the filter unit 195 , and fine particles or tertiary foreign substances P may be removed. In FIG. 12 , a case in which the filter part 195 of the overpressure prevention part 190 is provided as a metal filter 156 is illustrated as an example, but in some cases, the filter part 195 of the overpressure prevention part 190 is A ceramic filter 176 may be disposed at the outlet end of the valve 180 to replace the metal filter 156 .

On the other hand, the smoke reduction apparatus 100 according to an embodiment of the present invention may include a collecting unit 105 for collecting the primary foreign matter collected or removed from the first filtering unit 120 .

1 and 2 , the collecting unit 105 may be provided to be mounted on the main body 101 or separated from the main body 101 . Since the collecting part 105 is provided on the outer surface side of the body part 101, it is possible to prevent the internal space of the body part 101 from being reduced.

In addition, a cleaning stopper 106 may be formed at the lower end of the collecting unit 105 to clean the primary foreign substances collected in the collecting unit 105 . When the cleaning stopper 106 is provided, the bottom surface of the collecting portion 105 may be formed in a conical shape that gathers toward the cleaning stopper 106 .

By separating the collecting unit 105 from the main body 101 to clean the collected foreign substances, or by opening the cleaning stopper 106 to remove the foreign substances, the soot treatment operation or cleaning can be easily performed.

On the other hand, the smoke reduction device 100 according to an embodiment of the present invention, a temperature sensor (not shown) for measuring the internal temperature of the main body 101, the inlet 102 and the outlet of the main body 101 ( 103) may include a pressure sensor (not shown) for measuring a pressure difference between the two. The smoke reduction device 100 according to an embodiment of the present invention can prevent a safety accident in advance by constantly monitoring a measured value of a temperature sensor or a pressure sensor to warn of an overtemperature (high temperature) or overpressure state.

11 and 12 , the exhaust gas flow hole (not shown) may be formed at the front end and the rear end along the flow direction of the exhaust gas G2 in the member shown in the form surrounding the valve 180 . .

As described above, the embodiment of the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is limited to the above embodiments Various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described below, but also all those with equivalent or equivalent modifications to the claims will fall within the scope of the spirit of the present invention.

100: soot reduction device for generator
101: body portion 102: inlet
103: outlet 105: collecting unit
120: first filtering unit 123: gas supply unit
125: gas discharge unit 140: second filtration unit
150: metal filter unit 160: third filter unit
170: ceramic filter unit 180: valve
190: overpressure prevention unit 195: filter unit

Claims (11)

a body part in which exhaust gas discharged from the engine of the generator is introduced and purified;
a first filtering unit provided inside the main body to communicate with the inlet of the main body;
a second filtering unit provided inside the main body to be positioned in front of the first filtering unit along a direction in which the exhaust gas flows into the main body; and
a third filtering unit provided inside the main body so as to be located in front of the second filtering unit along the inflow direction of the exhaust gas;
The first filtering unit may include: a gas supply unit having an inlet and one end connected to the body unit to increase the back pressure of the exhaust gas; a housing formed in a cylindrical shape such that the exhaust gas introduced through the gas supply unit rotates; a foreign material discharge unit formed in the housing to send the primary foreign material centrifuged from the exhaust gas to the collecting unit along the inner circumferential surface of the housing; and a gas discharge unit formed in the housing to discharge the exhaust gas from which the primary foreign material is separated to the outside of the housing;
The other end of the gas supply unit is located inside the housing while being spaced apart from one end of the housing, and the center of the main body, the main body inlet, the gas supply and the housing with respect to the inflow direction of the exhaust gas is the same. A soot reduction device for a generator, characterized in that it is located on a line or on a parallel line.
delete According to claim 1,
The dust reduction device for a generator, characterized in that the foreign material discharge part and the gas discharge part are formed in the cylindrical part of the housing.
According to claim 1,
The second filtration unit for removing or collecting secondary foreign matter remaining in the exhaust gas discharged from the gas discharge unit comprises at least one metal filter unit.
5. The method of claim 4,
The second filtering unit includes a filter frame to which the metal filter unit is fixed or mounted, and a casing having one end connected to the filter frame and accommodating the metal filter unit,
The filter frame and the casing are mounted on the main body portion or soot reduction device for a generator, characterized in that provided to be separated from the main body portion.
5. The method of claim 4,
The third filtration unit for removing or collecting tertiary foreign substances remaining in the exhaust gas that has passed through the second filtration unit includes at least one ceramic filter unit and at least one metal filter unit. .
7. The method of claim 6,
The ceramic filter unit is a soot reduction device for a generator, characterized in that provided in a greater number than the metal filter unit.
8. The method of claim 7,
The third filtration unit smoke reduction device for generators, characterized in that it includes an overpressure prevention unit provided between the ceramic filter unit and the metal filter unit.
9. The method of claim 8,
The overpressure prevention unit,
The exhaust gas reduction device for a generator, comprising: a valve positioned at the rear along the inflow direction of the exhaust gas; and a filter section positioned in front of the valve.
10. The method of claim 9,
The valve and the filter unit are provided so that the center of the exhaust gas inflow direction coincides with each other,
The valve is opened by the pressure formed between the third filtering unit and the second filtering unit, or is opened when the third filtering unit is clogged.
11. The method according to any one of claims 1 and 3 to 10,
The collecting unit is a soot reduction device for a generator, characterized in that provided to be mounted or separated from the main body portion.

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