KR101997931B1 - Gas­carrying system and internal combustion engine equipped therewith - Google Patents

Abstract

The present invention relates to a gas guiding system (1) and an internal combustion engine equipped with the gas guiding system, wherein the system (1) comprises a filter (10) for purifying the system gas (G) A gas pipe 20 in fluid communication with the filter and a control device 50 and a detection device 60 connected to the control device and an extinguishing device 40 including a extinguishing powder discharge device 70, And in this case the spark sensors 61 and 62 of the detecting device 60 are arranged in the flow path of the system gas G and the detecting device 60 is arranged to detect the spark Wherein the control device 50 is designed to transmit the extinguishing powder discharge signal to the extinguishing powder discharge device 70, 80 in response to the spark detection signal, In this case, the extinguishing powder discharge device (70, 80) Stand (61, 62) is designed to discharge the fire extinguishing powder (P) into the flow path, adjacent the connection to the flow path and, in response to a fire extinguishing powder discharge signal.

Description

TECHNICAL FIELD [0001] The present invention relates to an internal combustion engine equipped with a gas guiding system and a gas guiding system,

The present invention relates to a gas guiding system including a filter for purifying the system gas and a fire extinguishing apparatus, and an internal combustion engine equipped with the gas guiding system.

The fire extinguishing system of the gas guiding system is used to prevent and extinguish fire inside the system and especially inside the filter. In general, the fire extinguishing system operates with a non-flammable gas or water as an extinguishing agent, in which case the two extinguishing agents are accompanied by some disadvantages.

In addition to water and inert gases for fire protection and extinguishing, fire extinguishing agents are generally known, for example as disclosed in DE 10 2006 019 739 A1, as an extinguishing agent.

Water-borne extinguishment can cause damage or breakage due to severe contamination, thermal shock and, in some cases, erosion, depending on the case of parts in contact with water of the gas guidance system described above. If the temperature of the system gas is high, a greater amount of water may be required for digestion, which may increase the weight loading of the components of the gas guidance system, and severe vapor emissions may occur due to evaporative digestion. Proper water supply can generally be ensured by the operating parts (such as pumps), and after the digestion process it is necessary to actively remove the water supplied as the case may be. Prophylactic use of the fire extinguisher is not possible due to the risk of damage / breakage of the system components (eg filter bag of the filter).

In the case of extinguishing with an inert gas, the gas guidance system described above, such as an exhaust gas system, must be shut off in an airtight manner, which requires costly shutoff devices. In addition, additional high structural complexity may be required if the operation of the system can be interrupted for extinguishing. In addition, a relatively large amount of inert gas is required when extinguishing with an inert gas. In fact, extinguishing with inert gas is complex, costly, and requires a great deal of maintenance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas guiding system as described above which is capable of preventing and extinguishing fire without risk of damage or breakage of system components and in normal operation of the system. Further, it is an object of the present invention to provide an internal combustion engine equipped with such a gas guiding system.

This problem is solved by the gas guidance system according to claim 1 or the internal combustion engine according to claim 10.

Improvements to the gas guidance system according to the invention are defined in the dependent claims.

According to a first aspect of the present invention there is provided a gas purification system comprising a filter for purifying system gas flowing through a gas guiding system, a gas pipe in fluid communication with the filter to supply a system gas to the filter, and a control device and a detection device connected to said control device A spark sensor of a detection device is disposed in a flow path of a system gas, and the detection device detects a spark in a flow path by a spark sensor, detects a spark Wherein the control device is configured to transmit the extinguishing powder discharge signal to the extinguishing powder discharge device in response to the spark detection signal and the extinguishing powder discharge device is connected to the flow path adjacent to the spark sensor, To discharge the digestive powder into the flow path in response to the extinguishing powder discharge signal .

By using fire extinguishing powder as fire extinguishing agent, thermal shock and erosion can be prevented, and fire prevention and extinguishing can be carried out without risk of damage / breakage of system components. The extinguishing powder introduced into the flow path tracks the flying sparks detected in the normal flow of the system gas and may optionally remain in the filter cake of the filter after use / filtration operation. No additional blocking is required for digestion. This allows digestion to be carried out without restriction of operation during normal operation of the system.

According to an embodiment of the gas guidance system according to the invention, the spark sensor of the detection device is arranged in a gas pipe and the detection device is arranged to transmit a spark detection signal to the control device upon detection of a spark in the gas pipe by means of a spark sensor Wherein the extinguishing powder discharge device is connected to the gas pipe downstream of the spark sensor and is configured to discharge the extinguishing powder into the gas pipe in response to the extinguishing powder discharge signal.

With this embodiment of the invention, prophylactic digestion can be carried out even in the case of weak flying sparks without any operational restrictions during normal operation, where the digestive powder follows the entire system gas flow and reaches the entire surface of the filter. This advantageously provides a significant temporal advantage over the general fire extinguishing method since the fire extinguishing system can be positioned at very high entry of the flying spark section.

Since the feeding position of the digestive powder during the prophylactic digestion is the first detection point of the flying spark, the extinguishing agent "traces" the ignition source before the actual ignition in the filter.

According to another embodiment of the gas guidance system according to the invention, the extinguishing device comprises at least one additional extinguishing powder discharge device connected to the control device, wherein at least one further spark sensor of the detecting device is arranged in the filter, Wherein the device is configured to transmit a spark detection signal to the control device upon detection of a spark in the filter by an additional spark sensor and wherein the control device is further configured to, in response to a spark detection signal based on detection by the further spark sensor, Signal to an additional fire extinguisher powder discharge device, wherein the additional fire extinguisher powder discharge device is connected to the filter adjacent to the other spark sensor, and is connected to the filter in response to the extinguishing powder discharge signal provided to the further fire extinguishing powder discharge device Thereby discharging the extinguished powder.

According to this embodiment of the invention, so-called target extinguishing can be achieved by an additional extinguishing system triggered by one or more local sensor (s) directly in the target (filter).

In accordance with an embodiment of the gas guidance system according to the invention, another spark sensor of the detection device is arranged in the filter at a location where aggregation of particles separated from the system gas is expected.

In accordance with this embodiment of the present invention, an emergency or reserve fire can be implemented similar to target fire extinguishment, but optionally optimized for specific structural features (e.g., sediment formation).

According to another embodiment of the gas guidance system according to the present invention, the detection device is configured so that information about the spark magnitude is integrated into the spark detection signal, and the control device is configured to generate the extinguishing powder discharge signal according to the spark magnitude. Preferably, the spark size includes spark density and / or flying spark duration.

Therefore, the intensity of digestion can be adjusted depending directly on the detection level / - duration or on the spark scale.

Preferably, the control device is configured to provide the extinguishing powder discharge signal as a pulse signal according to the spark size in the extinguishing time range, so that pulsed extinguishing powder discharge is performed in which the pulse frequency and / or the pulse length are changed according to the pulse signal.

Alternatively or additionally, the control device is configured to provide the extinguishing powder discharge signal as a continuous signal within the extinguishing time range, with a signal strength according to the spark scale, so that the continuous extinguishing powder Emissions are achieved.

As a result, the extinguishing powder discharge can be made intermittently or continuously depending on the detection level or the spark size. Intermittent digestive powder feeds can preferably be achieved during prophylactic digestion, while sustained feeds preferably consist of a special persistent digestion pattern at the time of target digestion and emergency or pre-digestion (perfect repression).

According to another embodiment of the gas guiding system according to the invention, the gas pipe is formed as an exhaust gas pipe for the combustion process, and the filter is formed as an exhaust gas purifying filter, in particular as a particle filter.

According to a second aspect of the present invention there is provided an internal combustion engine having a gas guidance system according to one, several, or all of the preceding embodiments of the present invention in which all combinations can be considered, Is connected to the exhaust gas discharge portion of the internal combustion engine.

The present invention also applies to embodiments which are not presented as a combination of features of the explicit cite of the claims, whereby the disclosed features of the invention may be arbitrarily combined with one another, if technically desirable.

1 schematically shows a gas guiding system of an internal combustion engine according to a first embodiment of the present invention in a first operating function;
Figure 2 schematically shows the gas guidance system of Figure 1 in a second operating function;

In the following, the present invention will be described in detail with reference to the preferred embodiments and the accompanying drawings.

An internal combustion engine (not fully shown) equipped with a gas guiding system 1 according to an embodiment of the present invention will now be described with reference to Figures 1 and 2 below.

1 and 2, the gas guiding system 1 includes a filter 10 for purifying the system gas G, a first gas pipe 20, a second gas pipe 30, (40).

The first and second gas pipes 20 and 30 are each formed as an exhaust gas pipe for the combustion process, in which case the filter 10 is formed as a particle filter, and the first gas pipe 20 is connected to the exhaust And is connected to a gas discharge portion (not shown). Thus, the system gas is formed as the exhaust gas of the internal combustion engine.

The internal combustion engine may be formed as a piston engine, in particular as a diesel engine or a gas engine, or as a turbo internal combustion engine, in particular as a gas turbine according to the invention.

The first gas pipe 20 is in fluid communication with the filter 10 so that the system gas G can be supplied to the filter 10 through the first gas pipe 20.

The second gas pipe 30 is also in fluid communication with the filter 10 so that the system gas G filtered by the filter 10 can be discharged from the filter 10 through the second gas pipe 30.

The fire extinguishing device 40 includes a control device 50, a detecting device 60 and two fire extinguishing powder discharge devices 70 and 80 which are connected by a signal to the control device, The device is also connected to the control device by a signal.

The detection device 60 comprises for example two optoelectronic spark sensors 61 and 62 which are arranged in the flow path of the system gas G through the gas guidance system 1, respectively. Each of the extinguishing powder discharge devices 70 and 80 is disposed adjacent to one of the spark sensors 61 or 62 and is connected to the flow path.

The detection device 60 is designed to transmit a spark detection signal to the control device 50 when a spark F (see FIG. 1) in the flow path is detected by one spark sensor 61, 62.

The control device 50 is designed to transmit the extinguishing powder discharge signal in response to the spark detection signal to the extinguishing powder discharge device 70, 80 included in each spark sensor 61, 62 triggering the spark detection signal.

The extinguishing powder discharge device (70, 80) is designed to discharge the extinguishing powder (P) into the flow path in response to the extinguishing powder discharge signal.

The powder cloud in the flow path formed by digestion powder (P) has a digestive and inhibitory effect, which causes rapid digestion. By the formation of the molten layer, the supply of oxygen and the heating around the near fire can be prevented, and re-ignition can also be prevented. The digestible powder may be composed of hydrophobic- and non-toxic inorganic salts mixed with a flow aid, for example.

As shown in Fig. 1, the first spark sensor 61 of the detection device 60 is disposed in the first gas pipe 20. The detection device 60 is designed to transmit a spark detection signal to the control device 50 upon detection of the spark F in the first gas pipe 20 by the first spark sensor 61. [ The first fire extinguishing powder discharge device 70 is connected to the first gas pipe 20 adjacent to the first spark sensor 61 in the downstream of the flow and discharges the fire extinguishing powder P in response to the fire extinguishing powder discharge signal And is designed to discharge into the gas pipe 20.

As shown in FIG. 2, the second spark sensor 62 of the detection device 60 is disposed in the filter 10. The detection device 60 is designed to transmit a spark detection signal to the control device 50 upon detection of the spark F in the filter 10 by the second spark sensor 62. [ The second extinguishing powder discharge device 80 is connected to the filter 10 adjacent to the second spark sensor 62 and supplies the extinguishing powder P to the filter 10 in response to the extinguishing powder discharge signal provided to the discharging device Lt; / RTI >

The second spark sensor 62 of the detecting device 60 is disposed in the filter 10 at a position where aggregation of particles separated from the system gas G, for example, sediment, is expected. A plurality of second spark sensors 62 may be disposed at various positions within the filter 10 and a plurality of second fire extinguishing powder discharge devices 80 may be connected to the filter 10 according to the present invention, Upon receipt of the corresponding extinguishing powder discharge signal, the discharging device may selectively discharge the extinguishing powder P to a position in the filter 10 to which the corresponding second spark sensor 62 of the discharging device belongs.

The detection device 60 according to the present invention is preferably designed to integrate information about the spark magnitude in the spark detection signal, in which case the control device 50 is designed to generate a digestive powder discharge signal according to the spark magnitude.

Preferably, the spark size includes the spark density and / or the duration (flying spark duration) in which the flying spark is present.

Therefore, the control device 50 is preferably designed to provide the extinguishing powder discharge signal as a pulse signal according to the spark size in the extinguishing time range, so that the pulsed extinguishing powder in which the pulse frequency and / or the pulse length are changed in accordance with the pulse signal Emissions are achieved.

Alternatively or additionally, the control device 50 is designed to provide the digestive powder discharge signal as a continuous signal in the extinguishing time range, with a signal strength according to the spark scale, so that the extinguishing powder Is continuously discharged.

The fire extinguishing system 40 of the gas guiding system 1 according to the present invention which operates with the fire extinguishing powder P differs from the general fire extinguishing system which operates with water or inert gas, It is possible to supply the extinguished powder P during normal operation of the internal combustion engine.

The fire extinguishing system 40 is subdivided into two operating systems as shown in FIGS. 1 and 2 or as an operating function.

Preventive extinguishment may preferably be performed by the first extinguishing powder discharge device 70 and the first spark sensor 61 with the operating function shown in the figure, And the fire extinguishing powder (P) extinguishes the spark (s) (F) before the actual ignition at the ignition source or filter (10). Thus, the extinguishing powder P follows the entire system gas flow (in this case for example the exhaust gas flow) and reaches the entire surface of the filter. Prophylactic digestion is possible without limitation of operation during normal operation and can be used prophylactically when the flying spark is weak. The start of digestion at the very beginning of the flying spark interval provides a considerable temporal advantage over the general digestion method.

 Target digestion can preferably be performed with the operational function shown in Figure 2 by means of the second digester powder discharge device 80 and the second spark sensor 62, in which case, in this case (in this case filter 10) Is triggered by a local sensor (second spark sensor (s) 62 in this case) to supply digested powder P by the second digester powder discharge device 80 and extinguish. Emergency or preliminary digestion is similar to target digestion, but may optionally be carried out optimally for specific structural characteristics such as, for example, sediment formation sites.

According to the above-described method of generating the extinguishing powder discharge signal as a pulsed or continuous signal in the extinguishing time range, the extinguishing powder discharge can be adjusted intermittently or continuously, depending on the detection level or the spark size. The provision of intermittent digestive powders preferably takes place during prophylactic digestion, while the sustained supply is preferably achieved in the form of a specific persistent digestion (complete suppression) upon target digestion and emergency or preselective digestion.

In each of the above-described digestive modification examples, the interruption of the system 1 or the internal combustion engine is generally unnecessary, and normal operation can be maintained. The digestive powder P remains in the filter cake in the filter 10 until the filter 10 is cleaned or replaced during normal maintenance, as the case may be, after the digestion has been carried out.

1 gas guidance system
10 filter
20 gas pipes
30 gas pipes
40 Fire extinguisher
50 control device
60 detecting device
61 Spark sensor
62 Spark sensor
70 Fire extinguisher
80 Fire extinguisher
F spark
G system gas
P digestion powder

Claims (10)

A gas guiding system (1) comprising:
A filter 10 for purifying the system gas G,
A gas pipe 20 in fluid communication with the filter 10 to supply the system gas G to the filter 10,
A control device 50 and a detection device 60 connected to the control device 50 and an extinguishing device 40 having extinguishing powder discharge devices 70,
, Wherein the spark sensors (61, 62) of the detection device (60) are arranged in the flow path of the system gas (G)
The detection device 60 is configured to transmit a spark detection signal to the control device 50 upon detection of a spark F in the flow path by the spark sensor 61, 62,
The control device (50) is configured to transmit a extinguishing powder discharge signal to the extinguishing powder discharge device (70, 80) in response to the spark detection signal,
The fire extinguishing powder discharge device (70, 80) is connected to the flow path adjacent to the spark sensor (61, 62) and is configured to discharge fire extinguishing powder (P) into the flow path in response to a fire extinguishing powder discharge signal,
Preventive digestion can be carried out even in the case of a weak flying spark during normal operation without any operational limitation and in the preventive digestion the feeding position of the digestive powder P is located at the first detection point of the flying spark, The powder (P) tracks the spark (F) before the actual ignition in the filter (10). The spark plug according to claim 1, wherein a spark sensor (61) of the detecting device (60) is disposed in the gas pipe (20), and the detecting device (60) Is connected to the gas pipe (20) downstream of the spark sensor (61), wherein the spark discharge device (70) is configured to send a spark detection signal to the control device (50) , And to discharge the extinguishing powder (P) into the gas pipe (20) in response to the extinguishing powder discharge signal. 3. A device according to claim 2, wherein said extinguishing device (40) comprises at least one additional extinguishing powder discharge device (80) connected to said control device (50) A sensor (62) is disposed in the filter (10) and the detection device (60) detects a spark (F) in the filter (10) by the further spark sensor Device (50), wherein the controller (50) is further configured to send an additional extinguishing powder discharge signal to the additional extinguishing powder discharge (50) in response to a spark detection signal based on detection by the further spark sensor Wherein said additional fire extinguishing powder discharge device is connected to said filter adjacent to said additional spark sensor and is further provided to said additional fire extinguishing powder discharge device, In response to the extinguishing powder discharge signal And to discharge the extinguished powder (P) into the filter (10). 4. A gas guiding system according to claim 3, wherein said additional spark sensor (62) of said detection device (60) is located in said filter (10) at a location where collection of discrete particles is expected. The system according to any one of claims 1 to 4, wherein the detection device (60) is configured to integrate information on the spark magnitude in the spark detection signal, and the control device (50) And to generate a powder discharge signal. 6. The gas guidance system of claim 5, wherein the spark magnitude comprises a spark density, a flying spark duration or spark density, and a flying spark duration. 6. The apparatus according to claim 5, wherein the control device (50) is configured to generate the extinguishing powder discharge signal as a pulse signal according to a spark magnitude in an extinguishing time range, whereby a pulse frequency, a pulse length or a pulse frequency, Wherein pulsed fire extinguishing powder discharge is performed in which the pulse length is changed. 6. The method of claim 5, wherein the controller (50) is configured to generate the extinguishing powder discharge signal as a continuous signal in a digestion time range, the signal having a signal strength in accordance with a spark scale, Wherein a continuous evacuation of the extinguished powder is made. 5. A gas guiding system according to any one of claims 1 to 4, wherein the gas pipe (20) is formed as an exhaust gas pipe for a combustion process and the filter (10) is formed as an exhaust gas purifying filter . An internal combustion engine having the gas guiding system (1) according to claim 9, wherein the gas pipe (20) is connected to the exhaust gas discharging part of the internal combustion engine.

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