CN210622907U

CN210622907U - Waste gas silencing device for diesel generating set

Info

Publication number: CN210622907U
Application number: CN201921450824.3U
Authority: CN
Inventors: 曾俊
Original assignee: Shenzhen Pdv Power Technology Co ltd
Current assignee: Shenzhen Pdv Power Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-26
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a waste gas silencing device for diesel generating set, including rain-proof cap, the thermal-insulated pipe of amortization, the mount pad of installing in proper order, the air cavity in the mount pad communicates with the exhaust passage in the thermal-insulated pipe of amortization, and the steering tube that is equipped with in the air cavity is connected with the boiler through the first air inlet on the air cavity, and the boiler is connected with the blast pipe of diesel supercharger export through a flue gas flapper valve, and the flue gas flapper valve still communicates with the second air inlet on the air cavity. The utility model discloses flue gas flapper valve is used for switching gas trend, sends into boiler recycle waste heat with high temperature waste gas and gets into the air cavity from first air inlet after, does not need to enter into the air cavity from the second air inlet through the waste gas of boiler recycle waste heat, discharges through exhaust passage again. And a steering pipe is arranged in the air cavity and used for guiding the waste gas entering the first air inlet to flow to the exhaust channel and reducing the discharge capacity of the waste gas flowing back to the second air inlet. The whole structure has smooth gas circulation and simple structure.

Description

Waste gas silencing device for diesel generating set

Technical Field

The utility model relates to a diesel generator technical field, in particular to an exhaust gas silencing device for diesel generator set.

Background

The diesel generator is a power machine which takes a diesel engine as a prime mover to drive a generator to generate electricity, when a supercharger on the diesel engine runs at a high speed, gas vibrates at a high frequency to generate a large amount of noise, and when exhaust gas is discharged, the noise can be diffused to the surrounding environment, is the most main environmental noise source of a diesel generator set power plant, and seriously affects the living environment of surrounding residents. In the prior art, the structure of the exhaust silencer of the diesel generating set is generally too complex, and the gas exhaust resistance is large, so that the fuel consumption is increased. The gas exhausted by the diesel generating set is generally higher in temperature, and the direct exhaust of the high-temperature gas is not beneficial to energy conservation and environmental protection.

SUMMERY OF THE UTILITY MODEL

The utility model provides a waste gas silencing device for diesel generating set aims at the waste gas that the waste gas silencing device through simple structure discharged diesel generating set produced, guarantees that the exhaust is smooth and easy, reduces diesel generating set power loss.

In order to achieve the above object, the utility model provides an exhaust gas silencing device for diesel generating set, including the amortization heat insulating pipe, the amortization heat insulating pipe is connected with the blast pipe of diesel booster export, be equipped with the exhaust passage that is used for discharging the waste gas in the amortization heat insulating pipe, exhaust passage entry is equipped with a mount pad, be equipped with an air cavity in the mount pad, the air cavity with exhaust passage intercommunication, exhaust passage export is equipped with a rain-proof cap; the air cavity is provided with a first air inlet and a second air inlet, a steering pipe is installed in the first air inlet, one end of the steering pipe is in butt joint with the inlet of the exhaust channel, the other end of the steering pipe is connected with a boiler for absorbing heat of the exhaust gas, the boiler is connected with an exhaust pipe at the outlet of the diesel supercharger through a flue gas baffle valve, a first interface of a three-way flue gas baffle valve is connected with the exhaust pipe at the outlet of the diesel supercharger, a second interface of the three-way flue gas baffle valve is connected with the boiler, and a third interface of the three-way flue gas baffle valve is communicated with the second air inlet.

Preferably, a first mesh plate is arranged in the mounting seat, and base silencing cotton is filled between the first mesh plate and the mounting seat shell.

Preferably, the silencing and heat-insulating pipe comprises an exhaust pipe and a plurality of silencing pipe monomers which are sequentially connected, a second mesh plate is arranged in any silencing pipe monomer, two ends of the second mesh plate are respectively installed on the inner side surfaces of the silencing pipe monomers through a plurality of reinforcing plates, the exhaust pipe and the second mesh plates are sequentially butted to form the exhaust channel, and the other end of the exhaust pipe is connected with the rain-proof cap; and sound pipe silencing cotton is arranged among the silencing pipe single body, the second mesh plate and the reinforcing plate.

Preferably, the rain hat comprises a conical rain hat body and a rain hat shell body which are coaxially mounted, the rain hat shell body is mounted on the silencing heat insulation pipe, the conical rain hat body is arranged above the outlet of the exhaust passage, and the cross section size of the first end of the conical rain hat body is larger than the cross section size of the outlet of the exhaust passage.

Preferably, the second end of the conical rain cap is arranged close to the exhaust passage, a drain pipe for draining water is arranged at the second end of the conical rain cap, the drain pipe penetrates through the silencing and heat-insulating pipe, and a water outlet of the drain pipe is arranged on the outer side surface of the mounting seat shell.

Compared with the prior art, the beneficial effects of the utility model are that: a three-way flue gas baffle valve is additionally arranged at the exhaust end of an exhaust pipe at the outlet of a diesel supercharger, the three-way flue gas baffle valve switches the gas direction according to the temperature of the exhaust gas, the high-temperature exhaust gas enters the air cavity of the mounting seat from the first air inlet after the waste heat is recycled by the boiler, and the exhaust gas which does not need to be recycled by the boiler enters the air cavity of the mounting seat from the second air inlet and is exhausted through an exhaust channel. And a steering pipe is arranged in the air cavity and used for guiding the waste gas entering the first air inlet to flow to the exhaust channel and reducing the discharge capacity of the waste gas flowing back to the second air inlet. The whole structure has smooth gas circulation and simple structure, and the silencing and heat-insulating pipe installed by splicing can be conveniently transported.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a side view of the exhaust muffler device for a diesel generator set of the present invention;

FIG. 2 is a sectional view of the exhaust muffler device for a diesel generator set according to the present invention;

FIG. 3 is a schematic view of the installation structure of the muffler pipe, the second mesh plate and the reinforcing plate of the present invention;

fig. 4 is the perspective structure of the rain hat of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The utility model provides an exhaust gas silencing device for diesel generating set, as shown in fig. 1 and fig. 2, including amortization heat insulating pipe 1, amortization heat insulating pipe 1 is connected with the blast pipe (not shown in the figure) of diesel booster export, be equipped with the exhaust passage 11 that is used for discharging waste gas in amortization heat insulating pipe 1, exhaust passage 11 entry 111 is equipped with a mount pad 3, be equipped with an air cavity 31 in the mount pad 3, air cavity 31 with exhaust passage 11 communicates, exhaust passage 11 export 112 is equipped with rain-proof cap 2; the air cavity 31 is provided with a first air inlet 35 and a second air inlet 36, a steering pipe 4 is installed in the first air inlet 35, one end of the steering pipe 4 is in butt joint with the inlet 111 of the exhaust channel 11, the other end of the steering pipe 4 is connected with a boiler 6 for absorbing heat of the exhaust gas, the boiler 6 is connected with an exhaust pipe at the outlet of the diesel supercharger through a flue gas baffle valve 7, a first connector 71 of the three-way flue gas baffle valve 7 is connected with the exhaust pipe at the outlet of the diesel supercharger, a second connector 72 of the three-way flue gas baffle valve 7 is connected with the boiler 6, and a third connector 73 of the three-way flue gas baffle valve 7 is communicated with the second air inlet 36.

The utility model discloses the exhaust pipe of diesel supercharger export exhaust high-frequency vibration's waste gas gets into tee bend flue gas flapper valve 7 earlier, and tee bend flue gas flapper valve 7 switches the gas trend according to exhaust gas temperature, gets into exhaust passage 11 from first air inlet 35 and second air inlet 36 respectively. When the temperature of the exhaust gas discharged from the exhaust pipe at the outlet of the diesel supercharger is higher, the third interface 73 of the three-way flue gas baffle valve 7 is closed, the second interface 72 of the three-way flue gas baffle valve 7 is communicated with the boiler 6, and the boiler 6 absorbs the heat of the exhaust gas for recycling, thereby saving energy. The exhaust gas cooled by the boiler 6 enters the air cavity 31 from the first air inlet 35, and the steering pipe 4 in the air cavity 31 is butted with the inlet 111 of the exhaust passage 11 to guide the exhaust gas to directly enter the exhaust passage 11. When the exhaust gas discharged from the exhaust pipe at the outlet of the diesel supercharger does not need to be recycled by the boiler, the second interface 72 of the three-way flue gas baffle valve 7 is closed, the third interface 73 of the flue gas baffle valve is communicated with the second air inlet 36, and the exhaust gas enters the air cavity 31 and is discharged through the exhaust channel 11.

A first mesh plate 32 is arranged in the mounting seat 3, and base silencing cotton 34 is filled between the first mesh plate 32 and a shell 33 of the mounting seat 3. The exhaust gas of high-frequency vibration gets into air cavity 31, passes first mesh plate 32, diffuses to base amortization cotton 34, gets into exhaust passage 11 after carrying out preliminary amortization, and further, base amortization cotton 34 still can be isolated inside and outside heat exchange. The inner side surface of the shell 33 of the mounting seat 3 is provided with a plurality of reinforcing rib plates 37 along the circumferential direction, and the plurality of reinforcing rib plates 37 are arranged close to the silencing heat insulation pipe 1, so that the structural strength of the waste gas silencing device is ensured.

The silencing and heat insulating pipe 1 comprises an exhaust pipe 12 and a plurality of silencing pipe monomers 13 which are sequentially connected, a second mesh plate 14 is arranged in any silencing pipe monomer 13, two ends of the second mesh plate 14 are respectively installed on the inner side surfaces of the silencing pipe monomers 13 through a plurality of reinforcing plates 15, the exhaust pipe 12 and the second mesh plates 14 are sequentially butted to form the exhaust channel 11, and the other end of the exhaust pipe 12 is connected with the rain-proof cap 2; and sound pipe silencing cotton 16 is also arranged among the silencing pipe single body 13, the second mesh plate 14 and the reinforcing plate 15. Preferably, the utility model discloses rain-proof cap 2, blast pipe 12, a plurality of hush pipe monomer 13 and mount pad 3 from the top down coaxial arrangement, first mesh plate 32 also with hush pipe monomer 13 coaxial arrangement, guarantee that the gas circulation is smooth and easy. The waste gas that gets into in the exhaust passage 11 passes second mesh plate 14, diffuses to sound pipe amortization cotton 16, subducts waste gas vibration frequency once more, and the noise reduction, sound pipe amortization cotton 16 also is used for insulating inside and outside heat exchange, guarantees that the exhaust is smooth and easy. The exhaust pipe 12 is covered on the silencing pipe single body 13, and the gas is completely collected in the exhaust pipe 12, so that the silencing cotton 16 and the second mesh plate 14 of the silencing pipe are prevented from being corroded by external rainwater, the exhaust channel 11 can be further prolonged, and the vibrating gas is sent to high altitude.

As shown in fig. 4, the rain hat 2 includes a conical rain hat 21 and a rain hat housing 22 which are coaxially installed, specifically, the conical rain hat 21 is installed on the inner side surface of the rain hat housing 22 through a plurality of supporting plates 23, the rain hat housing 22 is installed on the silencing and heat insulating pipe 1, the conical rain hat 21 is installed above the outlet 112 of the exhaust passage 11, and the exhaust gas discharged from the outlet 112 of the exhaust passage 11 is discharged to the outside from the passage between the two adjacent supporting plates 23. The cross section size of the first end 211 of the conical rain cap 21 is larger than that of the outlet 112 of the exhaust passage 11, and the cross section size of the conical rain cap 21 is larger than that of the exhaust pipe 12, so that rainwater is prevented from entering the exhaust passage 11 from the exhaust pipe 12, and smooth exhaust in rainy and snowy days is ensured.

Preferably, the second end 212 of the conical rain cap 21 is arranged close to the exhaust passage 11, the second end 212 of the conical rain cap 21 is provided with a drain pipe 5 for draining water, the drain pipe 5 penetrates through the noise-reduction heat-insulation pipe 1, the drain port 51 of the drain pipe 5 is arranged on the outer side surface of the housing 33 of the mounting seat 3, and rainwater collected in the conical rain cap 21 is drained to the drain port 51 below through the drain pipe 5 and is discharged.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A waste gas silencing device for a diesel generating set comprises a silencing and heat-insulating pipe, wherein the silencing and heat-insulating pipe is connected with an exhaust pipe at the outlet of a diesel supercharger; the boiler is connected with an exhaust pipe at the outlet of the diesel supercharger through a flue gas baffle valve, a first interface of the flue gas baffle valve is connected with the exhaust pipe at the outlet of the diesel supercharger, a second interface of the flue gas baffle valve is connected with the boiler, and a third interface of the flue gas baffle valve is communicated with the second air inlet.

2. The exhaust silencer for the diesel generating set according to claim 1, wherein a first mesh plate is arranged in the mounting seat, and base silencing cotton is filled between the first mesh plate and the mounting seat shell.

3. The exhaust gas silencing device for the diesel generator set according to claim 1, wherein the silencing and heat insulating pipe comprises an exhaust pipe and a plurality of silencing pipe units which are connected in sequence, a second mesh plate is arranged in any one silencing pipe unit, two ends of the second mesh plate are mounted on the inner side surface of the silencing pipe unit through a plurality of reinforcing plates, the exhaust pipe and the plurality of second mesh plates are butted in sequence to form the exhaust passage, and the other end of the exhaust pipe is connected with the rain hat; and sound pipe silencing cotton is arranged among the silencing pipe single body, the second mesh plate and the reinforcing plate.

4. The exhaust muffler device for a diesel generator set according to claim 1, wherein the rain hat comprises a conical rain hat and a rain hat housing coaxially mounted, the rain hat housing is mounted on the sound-deadening heat-insulating pipe, the conical rain hat is disposed above the outlet of the exhaust passage, and a first end cross-sectional dimension of the conical rain hat is larger than a cross-sectional dimension of the outlet of the exhaust passage.

5. The exhaust silencer for the diesel generating set according to claim 4, wherein the second end of the conical rain cap is disposed close to the exhaust passage, the second end of the conical rain cap is provided with a drain pipe for draining water, the drain pipe is disposed through the silencing and heat insulating pipe, and a drain port of the drain pipe is disposed on an outer side surface of the housing of the mounting seat.