CN219452212U

CN219452212U - Noise reduction and forced heat dissipation diesel generator set silencing box

Info

Publication number: CN219452212U
Application number: CN202223270079.9U
Authority: CN
Inventors: 严源; 彭志伟; 徐宁
Original assignee: Kangfu Technology Co ltd
Current assignee: Kangfu Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-08-01
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses a noise reduction and forced heat dissipation diesel generator set silencing box, which comprises a box body, a bottom frame, a diesel engine and a generator, wherein the bottom frame is arranged at the bottom of the box body, the inside of the box body is divided into two independent working chambers and an exhaust chamber by a partition board, the diesel engine and the generator are arranged in the working chambers, a plurality of layers of guide plates are alternately staggered from top to bottom in the exhaust chamber, the guide plates and the exhaust chamber are matched to form a roundabout exhaust air channel, the wall surface of the exhaust air channel is covered with a sound absorption and noise reduction layer, a forced exhaust fan is arranged on the partition board, an inlet of the exhaust air channel is communicated with the working chambers by the forced exhaust fan, an exhaust outlet is arranged on the side wall of the exhaust chamber, and an outlet of the exhaust air channel is communicated with the exhaust outlet. The utility model has good heat dissipation and noise reduction effects, effectively ensures that the diesel generating set can perform long-time stable operation, and improves the operation safety of ships.

Description

Noise reduction and forced heat dissipation diesel generator set silencing box

Technical Field

The utility model belongs to the technical field of power generation equipment, and particularly relates to a noise reduction and forced heat dissipation diesel generator set silencing box.

Background

Most of the noise reduction boxes of the diesel generator set in the existing market cannot achieve both noise reduction and heat dissipation, the noise reduction is improved, the heat dissipation in the box body is easy to slow, the internal temperature is fast increased, and the diesel generator set cannot stably operate for a long time. Increasing the heat dissipation capacity easily causes a large amount of noise to be emitted to the outside, resulting in serious noise pollution.

In terms of noise, diesel generator set noise source analysis: 1. smoke exhaust noise accounts for 45%; 2. the exhaust noise accounts for 20%; 3. the air inlet noise accounts for 15%; 4. the mechanical noise of the generator is 5% when doing work; 5. the rotation noise of the diesel engine accounts for 5%; 6. vibration accounts for 20%. The traditional silence case is a simple shutter that advances and exhaust, and the noise when inside diesel generating set operation is very easy to give off outside through the shutter, so noise pollution is more serious.

Especially for the limited space in the ship, the equipment is numerous, and the excessive noise can directly influence the judgment of personnel on equipment faults and the integral mute effect of the high-end ship; the good heat dissipation directly influences the diesel generating set to perform long-time stable operation, and the operation safety of the ship is improved.

At present, the noise of some low-power mute box units can be controlled to be 50-70 dB, but the noise of the unit with the power of more than 100KW is generally about 85 dB, and serious noise pollution is generated, so that the mute box units with high-power noise controlled to be 60 dB and sufficient heat dissipation capacity are very necessary to develop and have wide market prospect.

Disclosure of Invention

The utility model aims to provide a noise reduction and forced heat dissipation diesel generator set silencing box which has good heat dissipation noise reduction effect, effectively ensures that the diesel generator set can stably operate for a long time and improves the operation safety of ships.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a fall and force heat dissipation diesel generating set silence box, comprises a box body, set up chassis, diesel engine and the generator of bottom half, the inside partition of box is two independent working chambers and the exhaust room of dividing into through the baffle, diesel engine and generator are installed in the working chamber, the indoor both sides of airing exhaust are provided with a plurality of layers guide plates by staggering from top to bottom in turn, a plurality of guide plates and exhaust room cooperation form circuitous wind channel of airing exhaust, the wind channel wall of airing exhaust covers has the sound absorption layer of making an uproar, set up on the baffle and force the exhaust fan, the wind channel entry of airing exhaust is through forcing the exhaust fan intercommunication working chamber, the air exit has been seted up to the exhaust room lateral wall, wind channel export and air exit intercommunication.

Further, the silencer is a two-stage silencer in a series connection mode, the silencer is arranged on the partition board, one end of the silencer is connected with the exhaust pipe of the diesel engine, the other end of the silencer passes through the partition board and the exhaust chamber to be communicated with the outer side of the box body through the exhaust pipeline, and the silencer and the exhaust pipe are wrapped with heat preservation and insulation layers.

Further, the side wall of the exhaust chamber is provided with an exhaust outlet, the side wall of the working chamber is also provided with an air inlet, and a rainproof and noise-reduction wind scoop is arranged at the air inlet in the working chamber.

Further, the air outlet and the air inlet are formed by a plurality of stacked baffles, and an air gap is reserved between two adjacent baffles.

Further, the baffle is inclined downward toward the outside of the case.

Further, the rain-proof noise-reduction wind scoop comprises a straight edge part and a bevel edge part, the straight edge part and the bevel edge part are integrally formed, the rain-proof noise-reduction wind scoop is installed on the inner side of a working chamber through the bevel edge part, the straight edge part is parallel to the side wall of the working chamber, the bevel edge part forms a 60-degree included angle with the wall surface of the working chamber, and the outer wall of the rain-proof noise-reduction wind scoop is provided with a glass fiber layer.

Further, lifting holes are formed in four corners of the top and the bottom of the box body.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the partition plate, the forced exhaust fan and the exhaust pipeline are added at the air outlet, so that the noise emission can be greatly reduced, and the sufficient exhaust of the forced exhaust fan can ensure the rapid exhaust of the heat in the box body; the air inlet is additionally provided with a rainproof and noise-reducing air scoop, so that the noise emission is greatly reduced on the premise of not influencing the air inlet quantity; the exhaust gas of the diesel engine passes through the secondary muffler and is fully wrapped by the heat insulation material, so that high-temperature radiation is well prevented, and the outward diffusion of heat is effectively prevented. And the exhaust air duct adopts a roundabout type, so that the length of the scattered exhaust air duct is prolonged, and the scattered exhaust air is subjected to sound absorption and noise reduction through the sound absorption and noise reduction layer on the wall surface of the exhaust air duct. The mute box unit with the power of more than 100KW can stably operate for a long time on the premise that the noise is only 60 dB.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the combination of the air outlet and the rain-proof noise-reducing wind scoop of the present utility model;

FIG. 3 is a schematic view of the air inlet pipeline structure of the present utility model;

FIG. 4 is a schematic view of a separator according to the present utility model;

FIG. 5 is a schematic view of the muffler structure of the present utility model;

in the figure: 1. the device comprises a box body, an exhaust pipeline, a forced exhaust fan, a partition plate, an exhaust air duct, a muffler, a diesel engine, a generator, a rainproof noise reduction wind scoop and a chassis.

Detailed Description

Referring to fig. 1-5, a noise reduction and forced heat dissipation diesel generator set silencing box comprises a box body 1, a bottom frame 10 arranged at the bottom of the box body 1, a diesel engine 7 and a generator 8, wherein the inside of the box body 1 is divided into two independent working chambers and an exhaust chamber by a partition board 4, the diesel engine 7 and the generator 8 are arranged in the working chambers, a plurality of layers of guide plates are alternately staggered from top to bottom on two sides of the exhaust chamber, a plurality of guide plates and the exhaust chamber are matched to form a roundabout exhaust air duct 5, the wall surface of the exhaust air duct 5 is covered with a sound absorption and noise reduction layer, a forced exhaust fan 3 is arranged on the partition board 4, an inlet of the exhaust air duct 5 is communicated with the working chambers by the forced exhaust fan 3, an exhaust outlet is arranged on the side wall of the exhaust chamber, and an outlet of the exhaust air duct 5 is communicated with the exhaust outlet.

Further, still include silencer 6, silencer 6 is the two-stage silencer 6 of series connection mode, and two-stage silencer 6 can be better to noise elimination, and silencer 6 installs on baffle 4, and diesel engine blast pipe is connected to silencer 6 one end, and the other end passes baffle 4 and exhaust room intercommunication box 1 outside through exhaust duct 2, and the parcel has the heat preservation insulating layer on silencer 6 and the blast pipe, can prevent high temperature radiation well, has effectively prevented the heat to outwards spread, the inside diffusion of box promptly.

Further, the side wall of the exhaust chamber is provided with an exhaust outlet, the side wall of the working chamber is also provided with an air inlet, and a rainproof and noise-reduction wind scoop 9 is arranged at the air inlet in the working chamber.

Further, the air outlet and the air inlet are formed by a plurality of stacked baffles, an air gap is reserved between two adjacent baffles, the baffles incline downwards towards the outer side direction of the box body 1, and when the air is taken in and radiated in rainy days, water drops can be blocked by the baffles to flow outwards of the box body 1, so that the quantity of the rainwater entering the box body 1 for radiating and taking in the air in rainy days is reduced, and the normal radiating gas flow is not influenced.

Further, the rain-proof wind scoop 9 of making an uproar that falls includes straight flange portion and hypotenuse portion, straight flange portion and hypotenuse portion integrated into one piece, and rain-proof wind scoop 9 of making an uproar is installed in the studio inboard through hypotenuse portion, and straight flange portion is parallel with the studio lateral wall, and 60 contained angles are formed with the studio wall to hypotenuse portion, and rain-proof wind scoop 9 outer wall of making an uproar that falls is provided with glass fiber layer, can prevent under the rainy day state that the heat dissipation air inlet can not make the rainwater get into in the box 1 to glass fiber layer can also play the effect of making an uproar that falls.

Further, lifting holes are formed in four corners of the top and the bottom of the box body 1, and accordingly the box body is convenient to install in an adaptive mode with a lifting tool.

The utility model relates to a noise reduction and forced heat dissipation diesel generator set silencing box which is mainly used for installing a diesel generator set and reducing the working noise of the diesel generator set. According to the utility model, the wall surface of the exhaust air duct 5 is covered with the sound absorption and noise reduction layer, the muffler 6 is matched with the rainproof and noise reduction wind scoop 9 arranged at the air inlet, and the heat insulation layer is wrapped on the muffler 6 and the exhaust pipe of the diesel engine, so that the noise emitted from various aspects such as air inlet, exhaust, smoke exhaust and the like is reduced, and sufficient heat dissipation capacity is ensured, and the silencing box of the diesel engine set can run for a long time under the condition of 60 dB of noise.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A noise reduction and forced heat dissipation diesel generator set silencing box is characterized in that: the diesel engine and the generator are installed in the working chamber, a plurality of layers of guide plates are alternately staggered from top to bottom on two sides in the exhaust chamber, a plurality of layers of guide plates and the exhaust chamber are matched to form a roundabout exhaust air channel, a sound absorption and noise reduction layer is covered on the wall surface of the exhaust air channel, a forced exhaust fan is arranged on the partition plate, an inlet of the exhaust air channel is communicated with the working chamber through the forced exhaust fan, an exhaust outlet is formed in the side wall of the exhaust chamber, and an outlet of the exhaust air channel is communicated with the exhaust outlet.

2. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 1, wherein the noise reduction and forced heat dissipation diesel generator set silencing box is characterized in that: the silencer is a two-stage silencer in a series connection mode, the silencer is arranged on the partition board, one end of the silencer is connected with the exhaust pipe of the diesel engine, and the other end of the silencer passes through the partition board and the exhaust chamber through the exhaust pipeline to be communicated with the outer side of the box body.

3. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 2, wherein: the muffler and the exhaust pipe are wrapped with a heat preservation and insulation layer.

4. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 1, wherein the noise reduction and forced heat dissipation diesel generator set silencing box is characterized in that: the side wall of the exhaust chamber is provided with an exhaust outlet, the side wall of the working chamber is also provided with an air inlet, and a rainproof and noise-reduction wind scoop is arranged at the air inlet in the working chamber.

5. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 4, wherein: the air outlet and the air inlet are formed by a plurality of stacked baffles, and an air gap is reserved between two adjacent baffles.

6. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 5, wherein the noise reduction and forced heat dissipation diesel generator set silencing box is characterized in that: the baffle is inclined downwards towards the outer side of the box body.

7. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 4, wherein: the rain-proof noise-reduction wind scoop comprises a straight edge part and a bevel edge part, wherein the straight edge part and the bevel edge part are integrally formed, the rain-proof noise-reduction wind scoop is arranged on the inner side of a working chamber through the bevel edge part, the straight edge part is parallel to the side wall of the working chamber, and the bevel edge part forms an included angle of 60 degrees with the wall surface of the working chamber.

8. The noise reduction and forced heat dissipation diesel generator set silencing box according to claim 1, wherein the noise reduction and forced heat dissipation diesel generator set silencing box is characterized in that: the outer wall of the rainproof noise reduction wind scoop is provided with a glass fiber layer.