CN101158314A - Chassis structure of an air-cooled generator set - Google Patents

Abstract

The invention relates to a chassis structure of an air-cooled generating set, which is characterized in that an air inlet is opened on the front end F of the chassis, a main air duct is horizontally arranged in the air inlet, and a connection between the main air duct and the main air duct is arranged at the end of the main air duct. The air-tight partition of the air exhaust port, the rear end of the chassis is provided with an air exhaust port, and the exhaust direction points to the oblique downward, and the first air distribution port and the second air distribution port in the main air duct are respectively connected to the hood assembly. The air outlet and the third air distribution outlet, one end of the air induction duct is connected to the first air distribution outlet, and the other end is connected to the outlet of the air induction duct. The invention makes full use of the absorption and scattering effect of the ground on the noise, so that the noise field with strong directivity radiated from the exhaust outlet of the generator set is attenuated and weakened, and the noise of the whole machine can be reduced; several air distribution outlets The proper setting can ensure that all components in the casing of the unit can be properly cooled, prolong the service life of related parts, and ensure the long-term working stability of the unit.

Description

Chassis structure of an air-cooled generator set

technical field

The invention relates to a chassis structure of an air-cooled generator set, and in particular belongs to the technical field of mobile power bases.

Background technique

In the prior art, the chassis of the air-cooled internal combustion generator set is usually provided with only air inlets and few air outlets on the chassis, and the cooling air is mostly discharged from the air duct opened on the upper casing of the unit. In addition, after some air-cooled generator sets introduce cooling air from the outside, they lack the necessary wind direction guidance and air volume distribution means, and the cold air utilization efficiency is low.

The Chinese patent number is ZL02143431.X, and the patent document published on April 20, 2005 discloses an invention patent named "Engine Generator Set". The inlet and the external air inlet on the generator side, while the exhaust outlet is located on the upper part of the soundproof box of the generator set.

The ventilation structure of the generating set involved in this document still has deficiencies. As we all know, no matter what measures are taken, the exhaust outlet of the generator set is still a leakage channel for the internal noise of the unit. The leaked noise must emit radiation with certain directivity through the opening, forming a strong noise field locally.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages, so as to provide a chassis structure of the air-cooled generator set, which can not only ensure the efficient cooling inside the generator set, but also reduce the noise of the whole machine, and make all the components in the cover of the generator set uniform. It can be properly cooled to ensure the long-term stability of the unit.

Main solution of the present invention is realized like this:

The present invention includes a chassis, which is characterized in that an air inlet is opened on the front end F of the chassis, the main air duct is horizontally arranged in the air inlet, and a partition structure is arranged at the end of the chassis to airtightly separate the main air duct from the air exhaust port, The rear end of the chassis is provided with an air exhaust port, and the exhaust direction points obliquely downward. The first air distribution port, the second air distribution port and the third air distribution port connected to the hood assembly are respectively opened on the main air duct to guide the air flow. One end of the channel is connected to the first air distribution port, and the other end is connected to the outlet of the induced air channel.

The bottom plate of the chassis is connected with a tubular column on the installation surface of the power support, and the tubular column is coaxial with the installation hole of the power support.

A rectangular hole is opened on the main air duct, and the main air duct cover plate is fastened on the rectangular hole to cover it.

The main air duct cover plate is near the position L on the left side of the chassis, and has a power air distribution port, and the power air distribution port provides the engine with the fresh air required for its combustion.

The left side panel of the chassis is connected with the noise shielding plate, surrounds the power air distribution port on three sides in the main air duct, and the noise shielding plate is located between the power air distribution port and the air inlet.

The interior of the main air duct, the interior of the induced air duct and the cover plate of the main air duct are all pasted with sound-absorbing sponges.

The middle part of the air outlet is provided with an exhaust pipe through hole through which the exhaust tailpipe can protrude.

An exhaust sealing surface is arranged on the upper surface of the air exhaust port, and a gasket is used to seal between the sealing surface and the outlet of the muffler cover, so as to prevent the heat and cooling air to be discharged from going back.

An oil funnel is provided in the middle of the R side on the right side of the chassis, which can lead the oil discharged from the crankcase of the engine out of the chassis; the left front part of the chassis is provided with a battery seat; the front and rear ends of the chassis The bottom connects two axles arranged in parallel.

The upper edges of the side plates around the chassis are welded with several nuts, which are used as the installation connection structure of the hood assembly on the chassis.

Compared with the prior art, the present invention has the following advantages:

1. The exhaust outlet is designed on the chassis of the generator set and its opening is inclined downward, which makes full use of the absorption and scattering effect of the ground on the noise, so that the radiation from the exhaust outlet of the generator set has a strong direction The permanent noise field is attenuated and weakened.

2. Multiple air distribution ports are used to reasonably configure the flow direction and flow rate of the cooling air, so that all components in the unit casing can be properly cooled, which can prolong the service life of related parts and ensure the long-term stability of the unit.

3. Since the air inlets, exhaust outlets, and air distribution outlets related to the distribution of cooling air volume are all located on the chassis, the configuration of the air volume required by each part of the generator set is easy to control and adjust, and the air volume allocation test in the optimized unit temperature field Among them, the test plan is greatly simplified, and the test process is significantly accelerated. At the same time, it can also reduce the manpower and material resources consumption in the test process, and shorten the new product development cycle.

4. The use of noise-shielding boards and sound-absorbing sponges is beneficial to reduce the overall noise level of the generating set.

Description of drawings

Fig. 1 is a state view of the overall cooling structure used in the generator set in the present invention.

Fig. 2 is a three-dimensional schematic diagram of the chassis structure of the air-cooled generating set of the present invention.

Fig. 3 is a schematic longitudinal sectional view of the chassis structure of the air-cooled generating set of the present invention.

Fig. 4 is a top view of Fig. 3 of the present invention.

Fig. 5 is a schematic cross-sectional view of A-A in Fig. 3 of the present invention.

Fig. 6 is a projected view of the exhaust port of the chassis viewed from the B end of Fig. 3 .

Fig. 7 is a projection view of the air inlet of the chassis viewed from the end F of Fig. 3 .

Fig. 8 is an enlarged cross-sectional view of B-B in Fig. 4 .

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

The ventilation structure of the generator set of the present invention mainly includes a chassis 1, an air inlet 2, a main air duct 3, a first air distribution port 4, a second air distribution port 5, a third air distribution port 6, an air guide duct 7, an air guide duct outlet 8, Tubular column 9, noise screen plate 10, air outlet 11, sound-absorbing sponge 12, gasket 13, battery holder 14, main air duct cover 15, power distribution port 16, power bracket installation hole 17, oil funnel 18, exhaust Sealing surface 19, exhaust pipe through hole 20, wheel shaft 21, engine generator assembly 22, engine fan 23, muffler 24, muffler cover 25, hood assembly 26, exhaust pipe 27, partition 28, front end F, Rear B, left L, right R.

As shown in Figures 1 to 8, the chassis 1 is composed of stamped and punched steel plate components, and the combination is mainly welded and bolted. There is an air inlet 2 on the chassis 1 at the F end of the front end. From the air inlet 2, there is a horizontally arranged main air duct 3. The farthest end of the main air duct 3 is opposite to the air inlet 2. Air-tight separation between the duct 3 and the exhaust outlet 11; the main air duct 3 is respectively opened with a first air distribution port 4, a second air distribution port 5 and a third air distribution port 6 leading to the inside of the hood assembly 26. The flow area of the tuyere is all artificially set, and the air induction channel 7 is connected to the first air distribution port 4 and the air introduction channel outlet 8; the tubular column 9 is coaxial with the support mounting hole 17, and the tubular column 9 connects the power support mounting hole 17 to the The bottom plates of the chassis are rigidly connected together to strengthen the support of the engine generator assembly 22; on the main air duct 3 in the middle of the chassis, there is a rectangular hole, and the main air duct cover plate 15 is fastened to the rectangular hole by bolts Cover it; at the position where the main air duct cover plate 15 is close to the left side L of the chassis, there is a power distribution port 16, and the power distribution port 16 plays a role in providing the engine with the fresh air needed for its combustion nearby; the noise shielding plate 10 Combined with the left side panel of the chassis, it surrounds the power air distribution port 16 on three sides in the main air duct 3, and the position of the noise shield plate 10 is just between the power air distribution port 16 and the air inlet 2 to shield the noise from the air intake. Radiation in the direction of port 2; the interior of the main air duct 3, the interior of the air induction duct 7, and the top of the main air duct cover plate 15 are all pasted with sound-absorbing sponge 12; Below, the middle part of the air outlet is provided with an exhaust pipe through hole 20 for the exhaust tailpipe to protrude; an exhaust sealing surface 19 is arranged on the inner part space from the air outlet 11, and the sealing surface 19 is in contact with the surrounding The outlet of the muffler cover 25 of the exhaust pipe 27 corresponds to the downward outlet, and the gasket 13 is used to seal between the sealing surface 19 and the outlet of the muffler cover to prevent the hot cooling air that is about to be discharged here from going back; the middle part of the R side on the right side of the chassis is set There is an oil funnel 18, which can lead the oil discharged from the engine crankcase out of the chassis; the upper left front part of the chassis is provided with a battery seat 14; the bottoms of the front and rear ends of the chassis are also welded with two parallel axles 21, so as to install power generation The wheels of the unit; the interior of the main air duct 3 and the induced air duct 7 and the top of the main air duct cover plate 15 are coated with sound-absorbing sponge 12; on the upper edge of the side plates around the chassis, several nuts are welded as the overall cover of the hood. Into 26 installation connection structures on the chassis.

Working principle of the present invention:

As shown in Figure 1, under the suction effect of the engine fan 23, the cold air is sucked into the main air duct 3 from the chassis air inlet 2, and flows from the first air distribution port 4, the second air distribution port 5 and the second air distribution port respectively according to the set air volume ratio. The three air distribution ports 6 enter the hood assembly 26, wherein the cooling air introduced from the first air distribution port 4 communicates with an air distribution device through an air induction channel 7, and the air distribution device divides the cooling air entering it, After deployment, it is divided into two paths, respectively cooling some components arranged in its vicinity; the cooling air introduced from the second air distribution port 5 mainly flows through the bottom of the engine generator assembly 22, and enters the engine generator assembly Before forming 22, blow through the parts located at the front end of the engine generator assembly 22 to implement cooling; the two smaller third air distribution ports 6 located on both sides of the chassis guide a part of the cooling air upward to blow the engine generator assembly 22 The outer surface of the engine generator assembly 22, especially the space above the muffler cover 25, will entrain and take away part of the hot air; After the cooling task of the space, all are sucked into the inner space of the engine generator assembly 22 by the engine fan 23, the generator, the engine and the muffler 24 are cooled, and finally discharged obliquely downward from the air exhaust port 11 at the rear end B of the chassis .

The setting of the noise-shielding plate 10, the sound-absorbing sponge 12, and the air exhaust direction taken by the air outlet 11 are all conducive to reducing the overall noise level of the generator set.

Claims (9)

1. A chassis structure of an air-cooled generator set, comprising a chassis (1), characterized in that an air inlet (2) is provided on the front end of the chassis (1), and the main air duct (3) is horizontally arranged at the air inlet (2) ), the end of the chassis (1) is provided with a partition (28) that airtightly separates the main air duct (3) from the air outlet (11), and the air outlet (11) is arranged on the chassis (1 ) rear end, the exhaust direction points obliquely downward, and the first air distribution port (4), the second air distribution port (5) and the third air distribution port (6) are respectively opened on the main air duct (3), and the air induction duct ( 7) One end is connected to the first air distribution port (4), and the other end is connected to the outlet of the air duct (8). 2. The chassis structure of an air-cooled generator set according to claim 1, characterized in that the bottom surface of the chassis (1) and the power support mounting surface are connected to a tubular column (9), and the tubular column (9) is connected to the power The bracket mounting holes (17) are coaxial. 3. The chassis structure of an air-cooled generator set according to claim 1, characterized in that a rectangular hole is opened above the main air duct (3), and the main air duct cover plate (15) is fastened in the rectangular hole superior. 4. The chassis structure of an air-cooled generator set according to claim 3, characterized in that said main air duct cover plate (15) is provided with a power distribution port (16). 5. The chassis structure of an air-cooled generator set according to claim 1 or 2, characterized in that the left side plate of the chassis (1) is connected to the noise shielding plate (10), and the main air duct (3) The center surrounds the power gas distribution port (16), and the noise shielding plate (10) is between the power gas distribution port (16) and the air inlet (2). 6. The chassis structure of an air-cooled generator set according to claim 1 or 3, characterized in that the interior of the main air duct (3), the interior of the air induction duct (7) and the main air duct cover plate (15 ) are all pasted with sound-absorbing sponge (12). 7. The chassis structure of a kind of air-cooled generating set according to claim 1, characterized in that the upper surface of the air outlet (11) is provided with an exhaust sealing surface (19), and the sealing surface (19) and A gasket (13) is arranged between the outlets of the muffler cover. 8. The chassis structure of an air-cooled generator set according to claim 1 or 7, characterized in that an exhaust pipe hole (20) is opened in the middle of the air exhaust port (11). 9. The chassis structure of an air-cooled generator set according to claim 1, characterized in that an oil funnel (18) is arranged in the middle of the right side of the chassis (1), and an oil funnel (18) is arranged on the left front part of the chassis. There is a storage battery seat (14); the bottoms of the front and rear ends of the chassis are connected with wheel axles (21) arranged in parallel.

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