Fire-retardant silencer with purification function

Abstract

The utility model discloses a flame-retardant silencer with a purification function, which comprises a silencing structure and a purification structure which are connected with each other through a connecting pipe, the silencing structure forms a silencing channel through the combination of a hollow cylinder, a front cover plate and a rear cover plate, the silencing channel is communicated with the connecting pipe through the front cover plate, the purification structure comprises a purification cylinder and an air inlet pipe, and the air inlet pipe is communicated with the purification cylinder. The purifying cylinder is connected between the connecting pipe and the air inlet pipe, a fire retardant core is arranged in the silencing channel, a screen plate is arranged in the purifying cylinder, a spraying pipe inserted into the purifying cylinder is arranged on the outer side of the purifying cylinder, one end of the spraying pipe penetrates through the screen plate, a spraying head is arranged at the end of the spraying pipe, and a water drainage pipe with a valve is further arranged at the bottom of the outer side of the purifying cylinder. The drain pipe is communicated with the interior of the purification cylinder and a communication port is positioned at one end of the screen close to the spray head. According to the silencer, the purification structure is arranged at the front end of the silencing structure, waste gas can be purified in advance and then silencing can be conducted, and meanwhile the flame arresting core is arranged in the silencing structure so that sparks can be prevented from being discharged into the atmosphere.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary equipment for generators, in particular to a flame-retardant muffler with a purification function. Background Art

[0002] Gas generator sets are new types of generator sets developed to meet the world's environmental protection requirements and the new market environment. Natural gas generator sets are mainly divided into two types, one is a combined cycle gas turbine and the other is a gas internal combustion engine. Gas turbines have relatively large power and are mainly used in large and medium-sized power stations, while gas internal combustion engines have relatively small power and are mainly used in small distributed power stations.

[0003] The noise generated by gas generator sets during normal operation is a source of environmental pollution. It is composed of multiple sound sources, mainly including combustion noise, mechanical noise and exhaust noise. The noise needs to be reduced before emission.

[0004] Currently, noise is reduced by using mufflers, but the combustion noise produced by gas generator sets may contain high-temperature gases, sparks, smoke, etc. Therefore, not only fire prevention treatment is required, but the exhaust gas must also be purified before being discharged into the atmosphere.

[0005] The existing method is to install a fire cap at the exhaust port. During the on-site installation process, the fire cap and the muffler need to be installed together to increase the installation strength, and the size of the exhaust fire cap needs to be adapted. If the diameter is too small, it will affect the exhaust back pressure after installation and reduce the engine power output. At the same time, if the exhaust gas generated by the gas generator set is directly discharged into the muffler for silencing and then directly discharged into the atmosphere, it is easy to cause air pollution. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned deficiencies, the utility model provides a flame-blocking muffler with a purification function. The flame-blocking core is pre-fixed in the muffler channel, which can replace the flame-blocking cap. It not only reduces the installation strength, but also does not affect the exhaust back pressure, thereby ensuring the engine power output. A purification structure is also provided at the front end of the muffler channel, which can facilitate the purification of the exhaust gas before discharging it into the muffler channel, thereby ensuring the atmospheric environment.

[0007] The utility model is implemented as follows: a fire-blocking silencer with a purification function is constructed, comprising a silencer structure and a purification structure interconnected by a connecting pipe, the silencer structure is combined by a hollow cylinder, a front cover plate and a rear cover plate to form a silencer channel, the silencer channel is communicated with the connecting pipe through the front cover plate, the purification structure comprises a purification cylinder and an air inlet pipe, the purification cylinder is connected between the connecting pipe and the air inlet pipe, a fire-blocking core is arranged in the silencer channel, a mesh plate is arranged in the purification cylinder, a spray pipe inserted into the purification cylinder is arranged on the outside of the purification cylinder, one end of the spray pipe passes through the mesh plate and a spray head is arranged at the end, a drain pipe with a valve is also arranged at the bottom of the outside of the purification cylinder, the drain pipe is communicated with the inside of the purification cylinder and the connecting port is kept at one end of the mesh plate close to the spray head.

[0008] Specifically, an exhaust pipe is arranged on the outer side of one end of the hollow cylinder away from the purification structure, and the exhaust pipe is connected with the silencer channel. Several support plates are arranged in the silencer channel, and the support plates are installed on both sides of the fire-blocking core for installing the connecting pipe and the silencer pipe. Mounting plates are also arranged in the gap between the two sides of the fire-blocking core and the support plates, and a through hole is opened at the center of the mounting plate for the gas to flow freely in the silencer channel.

[0009] Specifically, the fire-blocking core is a corrugated mesh belt made of metal or ceramic material.

[0010] Specifically, the support plate includes a first support plate, a second support plate and a third support plate which are arranged in parallel in the silencer channel, the first support plate and the second support plate are respectively installed on the outer side of the fire-blocking core close to the connecting pipe for supporting the connecting pipe, the third support plate is arranged on the other outer side of the fire-blocking core for supporting the silencer pipe, the silencer pipe is a hollow tube and silencer holes are evenly arranged on the pipe wall, one end of the silencer pipe is fixed at the center of the inner end of the rear cover plate, and the other end passes through the third support plate to keep the pipe mouth close to the mounting plate on the outer side of the fire-blocking core.

[0011] Specifically, one end of the connecting pipe passes through the center of the front cover plate and the first support plate to maintain contact with the end of the second support plate, a number of silencer holes are evenly opened on the outer side of the connecting pipe between the first support plate and the second support plate, a number of ventilation holes are evenly opened on the first support plate, and a ventilation pipe is installed in any ventilation hole, which is used to pass the gas on one side of the second support plate into the other side of the second support plate.

[0012] Specifically, one end of the purification cylinder is cylindrical and the other end is conical, and the cylindrical end is combined with the large end of the conical end. The cylindrical end of the purification cylinder is connected to the air inlet pipe, and the small end of the conical end of the purification cylinder is connected to the connecting pipe. The mesh plate is arranged at the connection between the cylindrical end and the conical end at the inner end of the purification cylinder.

[0013] Specifically, the spraying direction of the spray head is arranged in the opposite direction to the air inlet direction of the air inlet pipe.

[0014] The utility model has the following beneficial effects:

[0015] The muffler pre-installs the flame arrester core in the silencer channel, which can replace the flame arrester cap to achieve gas noise reduction while also achieving fire prevention and preventing spark discharge. It also reduces the installation strength and does not affect the exhaust back pressure, thereby ensuring the engine power output. A purification structure is also provided at the front end of the silencer channel, which can facilitate the purification of the exhaust gas before discharging it into the silencer channel, thereby ensuring the atmospheric environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific implementation of the present invention, they are used to explain the present invention, but do not constitute any limitation to the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the muffler structure and the connecting pipe in the utility model;

[0019] Figure 3 It is a schematic diagram of the side view of the muffler structure and the connecting pipe in the utility model;

[0020] Figure 4 yes Figure 3 Sectional view of AA in the middle;

[0021] Figure 5 It is a schematic diagram of the front view of the muffler structure and the connecting pipe in the utility model;

[0022] Figure 6 yes Figure 5 Cross-sectional view of the middle BB;

[0023] Figure 7 yes Figure 4 Cross-sectional view of CC;

[0024] Figure 8 yes Figure 4 Cross-sectional view of the middle DD;

[0025] Fig. 9 yes Figure 4 Sectional view of EE in the figure;

[0026] Fig.10 yes Figure 4 Cross-sectional view of the middle FF;

[0027] Fig.11It is a structural schematic diagram of the mounting plate in the utility model;

[0028] Fig.12 It is a cross-sectional schematic diagram of the purification structure in the utility model;

[0029] In the figure: 1. connecting pipe; 2. silencer hole; 3. front cover plate; 4. first support plate; 5. second support plate; 6. ventilation pipe; 7. third support plate; 8. silencer pipe; 9. rear cover plate; 10. hollow cylinder; 11. exhaust pipe; 12. mounting plate; 13. fire-blocking core; 14. purification cylinder; 15. air inlet pipe; 16. spray pipe; 17. drain pipe; 18. valve; 19. mesh plate; 20. spray head. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further specifically described below through specific embodiments in combination with the accompanying drawings; it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not intended to limit the present invention in any way; the accompanying drawings in the present invention are only used to assist in the description of the embodiments and to facilitate understanding, and are not intended to limit the present invention in any way.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0032] As described in the background technology, gas generator sets need to undergo noise reduction and flame arrester treatments during normal operation due to the generation of combustion noise, mechanical noise and exhaust noise. However, existing mufflers and flame arrester caps have high installation strength during installation. If the diameter of the flame arrester cap is too small, it will affect the exhaust back pressure and reduce the engine power output. In addition, the exhaust gas may be mixed with other impurities such as smoke and dust when discharged, which may easily cause blockage if it directly enters the inside of the muffler.

[0033] For the reasons stated above, please refer to the attached Figure 1 , Attachment Figure 2 and attached Fig.12The utility model provides a fire-blocking silencer with a purification function, comprising a silencer structure and a purification structure interconnected by a connecting pipe 1, the silencer structure is combined by a hollow cylinder 10, a front cover plate 3 and a rear cover plate 9 to form a silencer channel, the silencer channel is communicated with the connecting pipe 1 through the front cover plate 3, the purification structure comprises a purification cylinder 14 and an air inlet pipe 15, the purification cylinder 14 is connected between the connecting pipe 1 and the air inlet pipe 15, a fire-blocking core 13 is arranged in the silencer channel, a mesh plate 19 is arranged in the purification cylinder 14, a spray pipe 16 inserted into the purification cylinder 14 is arranged on the outside of the purification cylinder 14, one end of the spray pipe 16 passes through the mesh plate 19 and a spray head 20 is arranged at the end, and a drain pipe 17 with a valve 18 is also arranged at the bottom of the outer side of the purification cylinder 14, the drain pipe 17 is communicated with the inside of the purification cylinder 14 and keeps the communication port at one end of the mesh plate 19 close to the spray head 20.

[0034] Specifically, an exhaust pipe 11 is arranged on the outer side of one end of the hollow cylinder 10 away from the purification structure, and the exhaust pipe 11 is connected to the muffler channel. A plurality of support plates are arranged in the muffler channel, and the support plates are installed on both sides of the fire-blocking core 13 for installing the connecting pipe 1 and the muffler pipe 8. A mounting plate 12 is also arranged in the gap between the two sides of the fire-blocking core 13 and the support plate, and a through hole for the gas to flow freely in the muffler channel is opened at the center of the mounting plate 12 (combined with the attached Figure 2 , Attachment Figure 8 and attached Fig.11 can be seen).

[0035] Specifically, the fire-blocking core 13 is a corrugated mesh belt made of metal or ceramic material.

[0036] Please refer to the attached Figure 2 and attached Figure 4 Specifically, the support plate includes a first support plate 4, a second support plate 5 and a third support plate 7 which are arranged in parallel in the silencer channel. The first support plate 4 and the second support plate 5 are respectively installed on the outer side of the fire-blocking core 13 close to the connecting pipe 1 for supporting the connecting pipe 1. The third support plate 7 is arranged on the other outer side of the fire-blocking core 13 for supporting the silencer pipe 8. The silencer pipe 8 is a hollow tube and silencer holes are evenly opened on the tube wall. One end of the silencer pipe 8 is fixed to the center of the inner end of the rear cover plate 9, and the other end passes through the third support plate 7 to keep the pipe mouth close to the mounting plate 12 on the outer side of the fire-blocking core 13.

[0037] Please refer to the attached Figure 2 , Attachment Figure 4 , Attachment Fig. 9 and attached Fig.10Specifically, one end of the connecting pipe 1 passes through the center of the front cover plate 3 and the first support plate 4 to keep in contact with the end of the second support plate 5, and a plurality of silencer holes 2 are evenly opened on the outer side of the connecting pipe 1 between the first support plate 4 and the second support plate 5. A plurality of vent holes are evenly opened on the first support plate 4, and a vent pipe 6 is installed in any vent hole, and the vent pipe 6 is used to pass the gas on one side of the second support plate 5 into the other side of the second support plate 5.

[0038] Please refer to the attached Fig.12 Specifically, one end of the purification cylinder 14 is cylindrical and the other end is conical, and the cylindrical end is combined with the large end of the conical end. The cylindrical end of the purification cylinder 14 is connected to the air inlet pipe 15, and the small end of the conical end of the purification cylinder 14 is connected to the connecting pipe 1. The mesh plate 19 is arranged at the connection between the cylindrical end and the conical end of the inner end of the purification cylinder 14.

[0039] Specifically, the spraying direction of the spray head is arranged in the opposite direction to the air inlet direction of the air inlet pipe.

[0040] Through the above technical features, the mesh plate is set to facilitate buffering and dispersion of the exhaust gas, and the spraying direction of the spray head is set to facilitate the sprayed catalyst (such as urea) to fully contact with the exhaust gas to achieve purification of the exhaust gas.

[0041] The purification method of this purification structure can refer to the SCR denitrification method.

[0042] Furthermore, by Figure 1 It can be seen that flanges are provided at both ends of the air inlet pipe 15, both ends of the purification cylinder 14, the end of the connecting pipe 1 and the end of the exhaust pipe 11 to facilitate connection. The front cover plate 3 and the rear cover plate 9 can be welded to the ends of the hollow cylinder 10, and the support plate, the fire-blocking core 13 and the mounting plate 12 can all be welded inside the hollow cylinder 10.

[0043] When the muffler is in normal use, a catalyst for purifying the exhaust gas is introduced into the spray pipe 16 in advance, and the exhaust gas enters the purification cylinder 14 from the air inlet pipe 15. The exhaust gas is dispersed under the blocking effect of the mesh plate 19, and at the same time, the exhaust gas is purified after contacting with the atomized catalyst sprayed from the spray head 20 (the spray head can be set as an atomizing spray head). A part of the water produced after purification is evaporated by the high-temperature exhaust gas, and the other part flows downward to the drain pipe 17 (the water in the drain pipe can be discharged by opening the valve at a certain time). Subsequently, the purified gas passes through the mesh plate 19 and enters the hollow cylinder 10 through the connecting pipe 1. However, since the end of the connecting pipe 1 is blocked by the second support plate 5, it will be discharged from the muffler. The sound hole 2 is discharged into the gap between the first support plate 4 and the second support plate 5, and then passes through the vent hole of the first support plate 4 into the gap between the first support plate 4 and the front cover plate 3, and then enters the vent pipe 6 and is discharged into the gap between the second support plate 5 and the mounting plate 12. The gas passes through the through hole of the mounting plate 12 and contacts the fire-blocking core 13 to prevent sparks from passing through to achieve fire prevention. Then the gas passes through the fire-blocking core 13 and the mounting plate 12 at the other end into the silencer pipe 8, and finally passes through the silencer hole of the silencer pipe 8 and is discharged from the exhaust pipe 11. The gas is blocked and dispersed many times in the silencer channel, thereby reducing energy to achieve silencing and noise reduction, or the silencer pipe is made of silencing material, which can further achieve noise reduction.

[0044] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A fire-blocking muffler with purification function, comprising a muffler structure and a purification structure interconnected by a connecting pipe, wherein the muffler structure is combined by a hollow cylinder, a front cover plate and a rear cover plate to form a muffler channel, wherein the muffler channel is interconnected with the connecting pipe through the front cover plate, and the purification structure comprises a purification cylinder and an air inlet pipe, wherein the purification cylinder is connected between the connecting pipe and the air inlet pipe, and wherein: A fire-blocking core is arranged in the silencer channel, a mesh plate is arranged in the purification cylinder, a spray pipe inserted into the purification cylinder is arranged on the outside of the purification cylinder, one end of the spray pipe passes through the mesh plate and a spray head is arranged at the end, and a drain pipe with a valve is also arranged at the bottom of the outside of the purification cylinder. The drain pipe is connected with the inside of the purification cylinder and the connecting port is maintained at one end of the mesh plate close to the spray head.

2. According to claim 1, a flame-retardant muffler with purification function, characterized in that: An exhaust pipe is arranged on the outer side of one end of the hollow cylinder away from the purification structure, and the exhaust pipe is connected with the silencer channel. Several support plates are arranged in the silencer channel, and the support plates are installed on both sides of the fire-blocking core for installing the connecting pipe and the silencer pipe. Mounting plates are also arranged in the gaps between the two sides of the fire-blocking core and the support plates, and a through hole is opened at the center of the mounting plate for the gas to flow freely in the silencer channel.

3. A flame-retardant muffler with purification function according to claim 2, characterized in that: The fire-blocking core is a corrugated mesh belt made of metal or ceramic material.

4. The flame-retardant muffler with purification function according to claim 2, characterized in that: The support plate includes a first support plate, a second support plate and a third support plate which are arranged in parallel in the silencer channel. The first support plate and the second support plate are respectively installed on the outer side of the fire-blocking core close to the connecting pipe for supporting the connecting pipe. The third support plate is arranged on the other outer side of the fire-blocking core for supporting the silencer pipe. The silencer pipe is hollow tubular and silencer holes are evenly arranged on the pipe wall. One end of the silencer pipe is fixed to the center of the inner end of the rear cover plate, and the other end passes through the third support plate to keep the pipe mouth close to the mounting plate on the outer side of the fire-blocking core.

5. The flame-retardant muffler with purification function according to claim 4, characterized in that: One end of the connecting pipe passes through the center of the front cover plate and the first support plate to keep in contact with the end of the second support plate. A number of silencer holes are evenly arranged on the outer side of the connecting pipe between the first support plate and the second support plate. A number of ventilation holes are evenly arranged on the first support plate. A ventilation pipe is installed in any ventilation hole, and the ventilation pipe is used to pass the gas on one side of the second support plate into the other side of the second support plate.

6. The flame-retardant muffler with purification function according to claim 1, characterized in that: One end of the purification cylinder is cylindrical and the other end is conical, and the cylindrical end is combined with the large end of the conical end. The cylindrical end of the purification cylinder is connected to the air inlet pipe, and the small end of the conical end of the purification cylinder is connected to the connecting pipe. The mesh plate is arranged at the connection between the cylindrical end and the conical end at the inner end of the purification cylinder.

7. The flame-retardant muffler with purification function according to claim 1, characterized in that: The spraying direction of the spray head is arranged in the opposite direction to the air inlet direction of the air inlet pipe.

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