CN212202234U - Noise reduction structure of diesel generator set - Google Patents

Abstract

The utility model relates to a diesel generating set structure of making an uproar falls, including the power assembly, the unit base, the silence box, the exhaust pipe system, the air inlet shutter and the wind channel of making an uproar fall, the power assembly is installed on the unit base, the exhaust pipe system is connected with the gas vent of power assembly, the silence box is installed on the unit base and the power assembly is located inside the silence box, the inboard whole microperforation acoustic baffle that adopts of silence box covers, the inside lift-launch of exhaust pipe system has silencer and built-in microperforation acoustic baffle, the air inlet shutter is installed on the silence box, the air inlet shutter inboard is connected with the wind channel of making an uproar falls, the wind channel internally mounted that makes an upr. The utility model discloses solve the amortization problem of making an uproar with pertinence to the noise source of unit, can improve the holistic noise reduction effect of unit.

Description

Noise reduction structure of diesel generator set

Technical Field

The utility model belongs to the technical field of the unit amortization is fallen and is fallen noise, especially relate to a diesel generating set structure of making an uproar of falling.

Background

The diesel generator set is a power machine which takes diesel oil and the like as fuel and takes a diesel engine as power to drive a generator to generate electricity. The noise source of the diesel generator set during operation mainly comprises the following aspects: firstly, mechanical noise generated by the operation of the unit, such as noise generated by the operation of a motor, the rotation of a fan and the like; secondly, high-frequency noise generated by exhaust of the diesel engine; and thirdly, noise generated by the shutter is generated when air is fed into the unit for heat dissipation. The existing diesel generating set has the problems of insufficient pertinence of a noise reduction system and large emission noise during operation.

Disclosure of Invention

The utility model aims to solve the technical problem that a diesel generating set falls structure of making an uproar is provided, to the noise source pertinence ground of unit solve the amortization and fall the problem of making an uproar, improve the holistic noise reduction of unit effect.

The utility model provides a technical scheme that its technical problem adopted provides a diesel generating set structure of making an uproar falls, including power assembly, unit base, silence box, exhaust pipe system, air inlet shutter and the wind channel of making an uproar falls, power assembly installs on the unit base, exhaust pipe system is connected with power assembly's gas vent, the silence box is installed on the unit base and inside power assembly is located the silence box, the inboard whole microperforated acoustic baffle that adopts of silence box covers, the inside shipment of exhaust pipe system has silencer and built-in microperforated acoustic baffle, the air inlet shutter is installed on the silence box, the air inlet shutter inboard is connected with the wind channel of making an uproar falls, the wind channel internally mounted that falls has the microperforated acoustic baffle.

The micro-perforated sound absorption plate is of a hollow structure, and the interior of the micro-perforated sound absorption plate is separated by a partition plate to form a return type cavity channel.

The cavity is filled with noise reduction cotton.

The micro-perforated sound absorption plates inside the noise reduction air duct are arranged at even intervals.

And the outer part of an exhaust pipe of the exhaust pipe system is coated with a heat insulation sleeve.

Advantageous effects

The utility model discloses in, the silence box cover can carry out the sound absorption to the mechanical noise that devices such as internal engine, generator, fan operation produced and fall and make an uproar in generating set's outside, and exhaust pipe system carries on silencer and built-in acoustic baffle, can fall the high frequency noise that the engine exhaust produced and make an uproar, and the wind channel of making an uproar falls in the inboard setting of air inlet shutter, can fall the noise that the engine air inlet produced and make an uproar. Therefore, the utility model discloses can solve the amortization problem of making an uproar with falling to the noise source pertinence of unit, improve the holistic noise reduction effect of unit.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The noise reduction structure of the diesel generator set shown in fig. 1 comprises a power assembly 1, a set base 2, a mute box body 3, an exhaust pipe system 4, an air inlet shutter 5 and a noise reduction air duct 6.

Power assembly 1 installs on unit base 2, and silence box 3 installs on unit base 2, and power assembly 1 is located silence box 3 inside. The inner side of the mute box body 3 is wholly covered by a micro-perforated sound absorption plate which is of a hollow structure, the interior of the micro-perforated sound absorption plate is separated by a partition plate to form a turning-back cavity channel, and rock wool for silencing is filled in the cavity channel. The mute box body 3 can provide good rain-proof and noise-reducing protection for the whole unit, can absorb sound and reduce noise of mechanical noise generated by the running of internal engines, generators, fans and other devices, has higher IP protection level and good noise reduction effect, and can reduce the noise reduction effect of the box body by 15-20dB (A).

The exhaust pipe system 4 is connected with an exhaust port of the power assembly 1 and is used for discharging exhaust gas of the diesel engine. The exhaust pipe system 4 is internally provided with a residential muffler and a micro-perforated sound absorption plate, the micro-perforated sound absorption plate is of a hollow structure, the interior of the micro-perforated sound absorption plate is separated by a partition plate to form a reentrant cavity, rock wool for sound absorption is filled in the cavity, sound insulation, sound absorption and noise reduction are performed on the premise of ensuring that the exhaust performance is not affected, the exhaust peak noise of the diesel engine can be effectively reduced, and the noise reduction effect can reach 20-25dB (A). The outside of the exhaust pipe is wrapped with a ceramic heat insulation sleeve. In addition, the exhaust gas system 4 is also provided with a tail gas filtering and purifying structure, so that the sound absorbing board can normally work in the exhaust gas system 4.

Air inlet shutter 5 is installed on silence box 3, and 5 inboards of air inlet shutter are connected with the wind channel of making an uproar 6 of falling, the interior even interval in wind channel of making an uproar 6 of falling installs the micro-perforation acoustic baffle, and the micro-perforation acoustic baffle is hollow structure and inside separates the type chamber way of turning back that forms through the baffle, and the chamber is said inside packing and is had amortization rock wool. By arranging the noise reduction air duct 6 between the air inlet shutter 5 and the power assembly 1, the air inlet amount required by the unit is ensured, and meanwhile, the propagation of air inlet noise is reduced to the greatest extent.

Claims (5)

1. The utility model provides a diesel generating set structure of making an uproar falls, includes power assembly (1), unit base (2), silence box (3), exhaust pipe system (4), air inlet shutter (5) and falls wind channel (6) of making an uproar, install on unit base (2) power assembly (1), exhaust pipe system (4) are connected its characterized in that with the gas vent of power assembly (1): the utility model discloses a silencer noise reduction device, including silence box (3), exhaust pipe system (4), air inlet shutter (5) inboard and noise reduction duct (6) are connected, install on unit base (2) and power assembly (1) inside be located silence box (3), the inboard whole adoption microperforation acoustic baffle of silence box (3) covers, the inside loading of exhaust pipe system (4) has silencer and built-in microperforation acoustic baffle, air inlet shutter (5) inboard is connected with noise reduction duct (6), noise reduction duct (6) internally mounted has the microperforation acoustic baffle.

2. The noise reduction structure of the diesel generator set according to claim 1, wherein: the micro-perforated sound absorption plate is of a hollow structure, and the interior of the micro-perforated sound absorption plate is separated by a partition plate to form a return type cavity channel.

3. The noise reduction structure of the diesel generator set according to claim 2, wherein: the cavity is filled with noise reduction cotton.

4. The noise reduction structure of the diesel generator set according to claim 1, wherein: the micro-perforated sound absorption plates inside the noise reduction air duct (6) are arranged at even intervals.

5. The noise reduction structure of the diesel generator set according to claim 1, wherein: and the outer part of an exhaust pipe of the exhaust pipe system (4) is coated with a heat insulation sleeve.

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