KR20230001197A - Exhaust pipe system in which fluid for flame extinguishing is injected - Google Patents

Abstract

An objective of the present invention is to provide an exhaust pipe system for a ship which can reduce the risk of flames while releasing the internal pressure of an exhaust line. According to the present invention, the exhaust pipe system for a ship capable of injecting a blocking fluid for extinguishing flames comprises: a first line connected to an engine, allowing a fluid to be discharged from the engine, and having a bursting plate burst to release internal pressure when pressure larger than preset pressure is generated; and a trunk part having a body member communicating with the first line by bursting of the bursting plate and having a space in which flames are transferred through the first line, and a blocking member provided in the body member and linked to bursting of the bursting plate to inject a blocking fluid into the body member.

Description

Exhaust pipe system in which fluid for flame extinguishing is injected}

The present invention relates to an exhaust pipe system for a ship in which a blocking fluid for flame extinguishing is injected.

A vessel is provided with an engine or the like to produce power required therein. The engine generates high-temperature exhaust gas while burning fuel, and the exhaust gas is discharged to the outside of the ship through an exhaust line. Exhaust gas discharged through the exhaust line may contain unburned fuel while passing through the engine, and thus an explosion may occur in the exhaust line.

In particular, when the amount of unburned gas inside the exhaust line increases and the explosion pressure increases, various devices connected to the exhaust line (boiler, economizer, waste heat recovery device, toxic gas reduction device, SCR, silencer, etc.) and various fittings (valves) , sleeve, bellows, etc.) may be damaged by pressure.

If gas explodes in the exhaust line due to misfiring (ignition failure) of the engine, internal pressure rises and equipment damage may occur.

The problem to be solved by the present invention is to provide a ship exhaust pipe system in which a blocking fluid for flame extinguishing is injected, which can reduce the risk of flame while resolving the internal pressure of the exhaust line.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

One aspect of the exhaust pipe system for a ship in which the blocking fluid for flame extinguishing of the present invention for achieving the above object is injected is connected to an engine, the fluid is discharged from the engine, and a pressure greater than a predetermined pressure is generated. a body member communicating with the first line by rupture of the bursting plate and a body member having a space in which flame is transferred through the first line; and It is provided inside the rupture disk and may include a trunk portion having a blocking member for injecting a blocking fluid into the body member in conjunction with the rupture of the rupture disk.

The blocking member includes a storage member in which blocking fluid is stored and a first discharge port is formed along a circumferential surface, and a second discharge port opposite or displaced from the first discharge port according to rotation, the outer side of the storage member It may include a cover member provided on the cover member and a rotating member connected to the cover member and provided facing the rupture disk to be rotated by pressure ejected by rupture of the rupture disk.

The trunk portion may further include a stopper provided on at least one of the storage member and the body member and stopping the rotational angle of the rotating member at a position where the first discharge port and the second discharge port face each other.

Details of other embodiments are included in the detailed description and drawings.

The marine exhaust pipe system in which the blocking fluid for extinguishing the flame of the present invention is injected is a first line connected to the body member of the trunk and the exhaust line when the internal pressure is increased due to an explosion in the exhaust line due to misfire (ignition failure) of the engine. As the communication is performed, the internal pressure is relieved, and the flame is suppressed by the blocking member to improve stability.

1 is a view showing an engine provided with a marine exhaust pipe system in which a blocking fluid for flame extinguishing is injected according to some embodiments of the present invention.
FIG. 2 is a diagram illustrating a rupture disk of a ship exhaust pipe system to which blocking fluid for flame extinguishing is injected according to some embodiments of the present invention.
3 is a view showing another type of rupture disk of a ship exhaust pipe system to which blocking fluid for flame extinguishing is injected according to some embodiments of the present invention.
4 is a view showing the inside of the front of the exhaust pipe system for ships in which blocking fluid for flame extinguishing is injected according to the first embodiment of the present invention.
FIG. 5 is a view illustrating a section II′ of FIG. 4 .
FIG. 6 is a view showing a state in which blocking fluid is discharged due to the operation of the trunk part of FIG. 4 .
FIG. 7 is a view illustrating a section II-II′ of FIG. 6 .
8 is a view showing the inside of the front of a ship exhaust pipe system in which a blocking fluid for flame extinguishing according to a second embodiment of the present invention is injected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and methods for achieving them, will become clear 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 and may be implemented in various different forms, only the present embodiments make the disclosure of the present invention complete, and the common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components regardless of reference numerals are given the same reference numerals, Description will be omitted.

1 is a view showing an engine provided with a marine exhaust pipe system in which a blocking fluid for flame extinguishing is injected according to some embodiments of the present invention, and FIGS. 2 and 3 show flame extinguishing according to some embodiments of the present invention. It is a drawing for explaining the rupture disk of the ship's exhaust pipe system in which the blocking fluid is injected. And Figures 4 and 5 are views showing a state in which the trunk portion is recovered from the first line by the rupture disk of the marine exhaust pipe system in which the blocking fluid for flame extinguishing according to the first embodiment of the present invention is injected. In addition, FIGS. 6 and 7 are views for explaining a state in which the blocking fluid is discharged by the operation of the trunk part of FIG. 4 .

1 to 7, the marine exhaust pipe system 100 to which the blocking fluid for flame extinguishing according to an embodiment of the present invention is injected may be provided in the engine 10 so that the exhaust gas of the engine 10 is discharged. And, it includes a first line 110 and the trunk portion 120.

First, the engine 10 provided in the ship may be provided to propel the ship. Briefly, the engine 10 has an intake line 11 and an exhaust line 12 installed so that fluid (air, etc.) can flow in and out, and although not shown in the drawing, a piston connected by a plurality of cylinders and a connecting rod can be provided. And when air and fuel are burned in the cylinder, the explosive power from the combustion is converted into rotational motion of the crankshaft connected to the connecting rod.

However, exhaust gas discharged through the exhaust line 12 may include fuel that has not yet been burned while passing through the engine 10 , and thus an explosion may occur within the exhaust line 12 . In this way, when an explosion occurs in the exhaust line 12 due to misfire (ignition failure) of the engine 10, the internal pressure rises and may damage various devices (boiler, etc.), so it is necessary to prevent this. . Accordingly, the ship exhaust pipe system 100 of the present embodiment includes the first line 110 and the trunk portion 120.

In detail, the first line 110 is a configuration through which fluid passes, and exhaust gas of the engine 10 (which may be gas discharged after combustion in the engine 10) may pass through. In the following, for convenience of description and understanding, the first line 110 will be described as branching from the exhaust line 12 so that the first line 110 is distinguished from the exhaust line 12 . However, the present invention is not limited thereto, and the first line 110 is not distinguished from the exhaust line 12, and various modifications are possible such that the first line 110 may be the exhaust line 12.

Exhaust gas may be discharged through the first line 110 . However, unlike exhaust gas always being discharged from the exhaust line 12 when the engine 10 is running, exhaust gas (which may include unburned gas) may be discharged from the first line 110 above a certain internal pressure, , this is to ensure that the internal pressure is relieved.

In order to relieve internal pressure in the exhaust line 12 and/or the first line 110 through which the exhaust gas passes, the first line 110 is used to discharge the fluid (exhaust gas) from the engine 10 to the engine. (10) (specifically, the exhaust line 12 of the engine 10). In addition, the first line 110 may be provided with a rupture plate 111 so that exhaust gas and flame are discharged above a certain internal pressure.

The rupture disk 111 may be provided across the inside of the first line 110 to divide the space between the trunk portion 120 and the exhaust line 12 in normal times. As long as the rupture disk 111 can divide the space between the trunk portion 120 and the exhaust line 12, the location of the rupture disk 111 is not limited. Illustratively, the rupture disk 111 may be provided at the end of the first line 110, and when a pressure (eg, 0.3 bar or more) greater than a predetermined pressure (internal pressure according to engine operation in a stable state) is generated, exhaust is generated. It can be ruptured so that the increase in internal pressure due to the explosion of the unburned gas included in the gas is eliminated.

That is, the space of the first line 110 is limited at the position where the rupture disk 111 is provided, and then the space expands as the rupture disk 111 is ruptured and the first line 110 communicates with the trunk portion 120. can Accordingly, the internal pressure of the first line 110 may be reduced through the space of the trunk portion 120 .

For example, the rupture plate 111 may be formed of a plate (which may include a thin film) crossing the first line 110 . In addition, the rupture plate 111 may be made of a metal material, and as shown in FIGS. 2 and 3, it may be easily broken across the center (may be in the shape of a cross), or along the circumference along the perforated line ( 111A) may be provided so that the perforated line 111A is damaged when the internal pressure rises.

Alternatively, the rupture disk 111 is made of a brittle property, such as an aluminum thin film, and when a pressure greater than a predetermined internal pressure is generated, the rupture disk 111 is torn to communicate the first line 110 and the trunk portion 120. As may be expected, various modifications are possible, provided they do not conflict with the present embodiment.

The trunk portion 120 communicates with the first line 110 to expand a space for relieving internal pressure and to extinguish a flame, and may include a body member 121, a blocking member 122, and a stopper 123. can

The body member 121 may be in communication with the first line 110 by rupture of the rupture plate 111, and a space in which the flame is transferred may be formed through the first line 110. For example, the body member 121 may have a box structure in which the first line 110 is connected and a space is formed.

In addition, a blocking member 122 may be installed in the body member 121 . Referring to FIG. 4 as an example, it is illustrated that the storage member 122A of the blocking member 122 is installed through the body member 121. However, it is not limited thereto, and various modifications are possible if they do not conflict with the present embodiment.

At least a portion of the blocking member 122 may be provided inside the body member 121, and a blocking fluid may be injected into the body member 121 in association with the rupture of the bursting plate 111. The blocking fluid is a fluid that prevents the spread of flame, and may be composed of, for example, water or fire extinguishing fluid.

Specifically, the blocking member 122 may include a storage member 122A, a cover member 122B and a rotating member 122C.

In the storage member 122A, a space may be formed to store the blocking fluid, and one or more first outlets H may be formed along a circumferential surface through which the blocking fluid may be discharged. However, since the storage member 122A only needs to have a structure through which the blocking fluid is discharged, the outlet H is not limited to being formed on the circumferential surface, and various modifications are possible, such as being provided on the lower surface.

Illustratively referring to FIGS. 4 and 6 , the storage member 122A may be installed/supported on the body member 121 and provided adjacent to an upper portion of the body member 121 . Accordingly, the storage member 122A may pass through the upper end of the body member 121, a part of the side surface may be fixed to the body member 121, and a first discharge port H may be formed on the other part of the side surface.

In addition, the storage member 122A, although not shown in the drawing, may be provided with an inlet and a lid so that the blocking fluid can be refilled, and a water level sensor is provided so that the user can sense whether or not the blocking fluid is filled. , it is possible to change various configurations.

The cover member 122B prevents the discharge of the blocking fluid so that the blocking fluid is not discharged from the storage member 122A at normal times when the internal pressure of the first line 110 is not increased, while the internal pressure of the first line 110 is reduced. When raised, it is possible to allow the blocking fluid to drain.

For example, as shown in FIGS. 4 and 6, the cover member 122B may form a structure surrounding the outside of the storage member 122A, and the body member 121 may be connected to the rotating member 122C. may extend to the bottom of In addition, the cover member 122B may be rotated in conjunction with the rotation of the rotating member 122C, so that the cover member 122B and the body member 121 may have a circular cross section, and a ball bearing (not shown) to facilitate rotation. ) may be added.

This cover member 122B may include a second outlet (H). The second outlet (H) may be opposed to the first outlet (H) according to rotation to allow the blocking fluid to be discharged from the storage member (122A). Alternatively, the second discharge port (H) may be positioned to be offset from the first discharge port (H) to block the blocking fluid from being discharged from the storage member (122A).

The rotating member 122C is configured to rotate the cover member 122B according to whether the internal pressure rises, and may be connected to the cover member 122B. Referring to FIGS. 4 to 7 , the rotating member 122C is provided to face the bursting plate 111 and can be rotated by the pressure emitted by the bursting of the bursting plate 111 . For example, the rotating member 122C may include a rotating shaft 122S connected to the lower end of the storage member 122A and one or more blades 122W provided along the circumferential surface of the rotating shaft 122S.

In the rotating member 122C, as shown in FIGS. 4 and 5 in normal times, the space between the trunk portion 120 and the exhaust line 12/first line 110 is separated by the bursting plate 111. , The rotating member (122C) can be maintained in a stopped state.

However, as shown in FIGS. 6 and 7 , when the internal pressure of the exhaust line 12/first line 110 rises, the rupture disk 111 is ruptured by a pressure greater than the internal pressure of the trunk portion 120. is formed in the form of being ejected from the trunk portion 120 through the first line 110, so that the rotating member 122C rotates. At this time, the cover member 122B rotates in conjunction with the rotating member 122C, so that the blocking fluid can be discharged from the first discharge port H of the storage member 122A.

The stopper 123 is configured to restrict the movement of the cover member 122B so that the second outlet H of the cover member 122B rotated by the increase in internal pressure stops while facing the first outlet H.

Referring to Figures 5 and 7, the stopper 123, the rotating angle of the rotating member (122C) so that the rotation angle of the first outlet (H) and the second outlet (H) can be stopped at the opposite position, illustratively the body It may be provided to protrude from the inside of the member 121 towards the rotating member 122C.

On the other hand, this embodiment has illustrated that the stopper 123 is provided on the body member 121, but, unlike this, the stopper 123 may be provided on the storage member 122A, so the configuration can be changed in various ways there is.

Hereinafter, other embodiments of the present invention will be described.

8 is a view showing the inside of the front of a ship exhaust pipe system in which a blocking fluid for flame extinguishing according to a second embodiment of the present invention is injected. Referring to FIG. 8 , a description will be given mainly of differences from those described with reference to FIGS. 1 to 7 .

Same/similar to the marine exhaust pipe system 100 in which the blocking fluid for flame extinguishing of the first embodiment described above is injected, the ship exhaust pipe system 100 of the second embodiment includes the first line 110 and the trunk ( 120). However, the trunk portion 120 of this embodiment has some differences.

Specifically, the trunk portion 120 may include a body member 121, a blocking member 122, and a stopper 123 in the same/similar manner as in the first embodiment. Accordingly, the space between the trunk portion 120 and the exhaust line 12 is partitioned by the rupture disk 111 in normal times, identically/similarly to the first embodiment, and a pressure greater than a predetermined pressure (eg, 0.3 bar or more) When this occurs, the rupture plate 111 is ruptured so that the increase in internal pressure due to the explosion of unburned gas included in the exhaust gas is resolved, and the exhaust line 12/first line 110 and the body member 121 communicate with each other. can

However, the trunk portion 120 of this embodiment may further include an inflow prevention plate 124 and a spray branch 125.

The inflow prevention plate 124 is configured to prevent the blocking fluid of the storage member 122A from entering the first line 110, and is located at the upper end of the outlet of the first line 110 from the inside of the body member 121. can be provided. And the inflow prevention plate 124 may be formed with a downward slope so that the blocking fluid can flow down.

Since the inflow prevention plate 124 prevents the inflow of the blocking fluid discharged from the first outlet H of the storage member 122A, the first outlet H of the storage member 122A is connected to the first line ( 110), various deformable structures are possible, as may be omitted if the blocking fluid does not flow into the first line 110.

The injection branch 125 is a configuration in which the blocking fluid falls and collides so that the blocking fluid spreads evenly, and may be provided inside the body member 121.

For example, the injection branch 125 may have a structure extending upward from the inner bottom surface of the body member 121, and the upper end has a certain area (for example, a diameter of 5 cm or more) so that the blocking fluid spreads. can be achieved

However, in this embodiment, the injection branches 125 are provided on the bottom surface of the body member 121, but unlike this, various modifications are possible as they may be provided on the inner circumferential surface of the body member 121 .

In the marine exhaust pipe system 100 in which the blocking fluid for flame extinguishing of the present embodiment is injected, when the internal pressure is increased due to an explosion in the exhaust line 12 due to misfire (ignition failure) of the engine 10, the trunk portion As the body member 121 of the 120 and the first line 110 communicate, the internal pressure is relieved, and the flame is suppressed by the blocking member 122 to improve stability.

Although the embodiments of the present invention have been described with reference to the above and accompanying drawings, those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features. You will understand that there is Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

100: ship exhaust pipe system 110: first line
120: trunk portion 121: body member
122: blocking member 123: stopper

Claims (3)

a first line connected to an engine, provided with a rupture disk that ruptures so that fluid is discharged from the engine and the internal pressure is released when a pressure greater than a preset pressure is generated; and
A body member communicating with the first line by rupture of the rupture disk and forming a space in which flame is transferred through the first line, and a body member provided inside the body member and interlocking with the rupture of the rupture disk. An exhaust pipe system for a ship in which a blocking fluid for flame extinguishing is injected, including a trunk having a blocking member for injecting the blocking fluid into the member. According to claim 1,
The blocking member,
a storage member in which a blocking fluid is stored and a first outlet is formed along a circumferential surface;
a cover member provided outside the storage member and including a second discharge port facing or displaced from the first discharge port according to rotation; and
A marine exhaust pipe system in which blocking fluid for flame extinguishing is injected, including a rotating member connected to the cover member and provided opposite to the bursting plate and rotated by the pressure ejected by the bursting of the bursting plate. According to claim 2,
The trunk part,
It is provided on at least one of the storage member or the body member, and the rotation angle of the rotating member further comprises a stopper at a position where the first outlet and the second outlet are opposite to each other. Blocking fluid for flame extinguishing is injected into the ship's exhaust pipe system.

Images