CN102877938A

CN102877938A - Air cooling, double-cylinder, dipolar and low-noise gasoline generating set

Info

Publication number: CN102877938A
Application number: CN2012103855816A
Authority: CN
Inventors: 陈可庚
Original assignee: SUZHOU CHENHAO POWER EQUIPMENT CO Ltd
Current assignee: Suzhou Erma Mechnical & Electrical Co ltd
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2013-01-16
Anticipated expiration: 2032-10-12
Also published as: CN102877938B

Abstract

The invention discloses an air cooling, double-cylinder, dipolar and low-noise gasoline generating set which comprises a gasoline engine and a generator. The output shaft of the gasoline engine is a cone shaft, a main engine is formed by the connection of the cone shaft and a cone shaft hole on a rotator shaft of the generator and arranged in an main engine hollow air duct casing which is arranged in an inner box, the inner box is arranged in an outer box, a three-layer insulation casing is formed, an end cap is arranged on the gasoline engine, an air inlet and an air outlet are arranged on the end cap, an exhaust fan is arranged on the output shaft of the main engine and in the end cap, left and right fan blades are arranged on the exhaust fan, hot air inlet and exhaust channels are arranged on the main engine hollow air duct casing, air inlet and exhaust holes are opened on the inner and outer boxes, and cooling air streams are formed when the exhaust fan, an exhaust blower and a power fan work, so that the set temperature is reduced, a five stage silencer is used, a catalyst is arranged inside, and a gulp valve is arranged outside. According to the air cooling, double-cylinder, dipolar and low-noise gasoline generating set, the denoising effect is good, temperature rising is low during a work process, the pollution is little, and prior output power is maintained.

Description

Air cooling twin-tub two utmost point low noise gasoline engine generator groups

Technical field

The present invention relates to a kind of generator set, particularly a kind of generator set with air cooling system.

Background technique

The gasoline engine generator group is mainly as emergent, standby power supply, using scope is wide, the huge market demand, existing gasoline engine generator group on the market owing to there are the deficiencys such as height, noise is large, discharging exceeds standard that heat up in the working procedure, is difficult to satisfy the user to the high request of unit quality.Just because of the composite factor impacts such as gasoline engine generator group operating temperature is high, noise is large, discharging exceeds standard, inflammable, explosive, gasoline high-temperature evaporation have restricted technology upgrading and the exploitation development of this series products.Application number is 201110094333.1 application for a patent for invention, and a kind of twin-tub gasoline engine generator group that can partly reduce noise, control temperature rise is provided, but because structural limitations, its effect that reduces noise, control temperature rise can not be met the need of market fully.

Summary of the invention

The purpose of this invention is to provide a kind of air cooling twin-tub two utmost point low noise gasoline engine generator groups, temperature rise is lower in its noise-reducing better effects if, the working procedure, pollution is less, and can keep original power.

In order to realize such scheme, technical solution of the present invention is: a kind of air cooling twin-tub two utmost point low noise gasoline engine generator groups, comprise petrol engine, generator, the output shaft of petrol engine and the rotor shaft of generator are connected to form main frame, described main frame be arranged in the internal box and generator on a left side, petrol engine is on the right side, internal box is located in the outer casing, also be provided with main frame hollow air channel shell in the described internal box, described main frame is arranged in the shell of main frame hollow air channel, the shell left end sealing of main frame hollow air channel, right-hand member opens wide, in the shell of main frame hollow air channel, form active chamber B, internal box comprises base, the left bank spiracular plate, left, right, before upper clapboard reaches, rear bulkhead, be evenly equipped with exhaust port on the left bank spiracular plate, left, be equipped with vent on the right clapboard, outer casing comprises loam cake, base plate, left, right casing, and before, rear casing, on be covered on the outer casing top, be provided with fuel tank assembly in the loam cake, part near output shaft on the petrol engine is provided with end cap, end cap be provided with into, exhaust port, on the output shaft of petrol engine ventilating fan is installed, ventilating fan is positioned on the end cap, ventilating fan is provided with a left side, right fan blade, the left part of the base plate of main frame hollow air channel shell is provided with into cold passageway, position near ventilating fan on the shell base plate of main frame hollow air channel is provided with the thermal wind exhausting passage, position corresponding with the thermal wind exhausting passage on the base plate of outer casing is provided with exhaust port, the thermal wind exhausting passage passes the base of internal box, end is located at the exhaust port place of outer casing, form work hot gas between internal box inwall and the main frame hollow air channel shell outer wall and distribute chamber D, form total heat extraction air cavity E between internal box left bank spiracular plate and the left clapboard, the left clapboard of internal box is provided with air bells exhauster, outer casing is provided with the thermal wind exhausting hole and is communicated with total heat extraction air cavity E, form between the right clapboard of internal box and the right casing of outer casing and advance cold wind chamber A, outer casing be provided with into the cold wind mouth with advance cold wind chamber A and be communicated with, and advance cold wind chamber A and active chamber B, work hot gas distributes chamber D and is communicated with mutually, form between internal box top board and the fuel tank assembly bottom and advance cold passageway A1, cover on the outer casing offer with advance that cold passageway A1 is connected advance the cold wind mouth, form between the bottom of the base of internal box and main frame hollow air channel shell and advance cold passageway A5, advance cold passageway A5 and advance cold passageway and be communicated with, distribute and be provided with two baffler thermal wind exhausting passages in the D of chamber at work hot gas, two baffler assemblies are located at respectively in two baffler thermal wind exhausting passages, be communicated with between two baffler thermal wind exhausting passages and the total heat extraction air cavity E, be equipped with the baffler passage on the base of internal box and the base plate of outer casing.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, described main frame hollow air channel shell base plate outer wall is equipped with antivibration pad, and antivibration pad is bolted on the base of internal box, and the base of internal box is fixed on the base plate of outer casing.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, before the described outer casing, rear casing and loam cake all are divided into left and right sides two-part, wherein front casing is divided into a left side, right front shell, rear casing is divided into a left side, right back shell, loam cake is divided into a left side, upper right lid, left front shell wherein, left back shell, left upper cover and left outside shell form left outside casing, right front shell, right back shell, upper right lid and right casing form right outside casing, right outside casing is fixed on the chassis, before the internal box base, be respectively equipped with front groove beam on the rear edge, the pit beam, the lower limb of left front shell and left back shell is located at respectively front groove beam, in the pit beam, at described front groove beam, pit beam and left front shell, be equipped with ball bearing between the left back shell lower limb, left outside bottom half is provided with pulley, left, between the right front shell, a left side, a between the right back shell and left side, all be bolted between the upper right lid and be integrated.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, described outer casing bottom is provided with the chassis, described chassis cavity is by first, muscle is divided into a left side in second, in, right cavity, middle cavity is separate cavities, left cavity is exhaust cavity, right cavity is air-inlet cavity, left cavity be provided with that exhaust port is in communication with the outside and left cavity by the thermal wind exhausting hole on the upper cover plate with main frame hollow air channel shell on the thermal wind exhausting channel connection, right cavity be provided with that inlet hole is in communication with the outside and right cavity by the cold air inlet orifice on the upper cover plate with advance cold air cavity A and be communicated with, tray bottom is left, part on the right side one group of directional wheel and one group of universal wheels are not installed.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, described main frame hollow air channel shell internal surface posts fire-retardant noise reduction sponge, glass fibre and aluminium foil are posted in the base inboard of described internal box, before the internal box, after, right, distribute the corresponding position inwall of chamber D with work hot gas on the upper clapboard and post the 12mm flame-retardant sponge, outer wall posts the 6mm flame-retardant sponge, the top board internal surface posts flame-retardant sponge, the left clapboard left side is posted glass fibre and aluminium foil from inside to outside successively, glass fibre is posted on the right side from inside to outside successively, aluminium foil and flame-retardant sponge, outer casing inner wall all posts flame-retardant sponge before and after the outer casing, the upper cover plate on chassis inside and outside in the both sides and first both sides of muscle all post glass fibre and aluminium foil.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, described baffler assembly comprise be fixedly connected sequentially one, two, three, four, the Pyatyi baffler, the first class sound arrester one end is connected on the relief opening of petrol engine by flange, the other end and secondary muffler are fixedly connected, the first class sound arrester is equipped with automatic air compensating valve outward, in catalyst converter is housed, one, secondary muffler is arranged in the baffler thermal wind exhausting passage, three, the level Four baffler is arranged in the heat extraction air cavity E, the Pyatyi baffler is located at the interior level Four baffler of left cavity on chassis and is located in the left cavity on chassis, secondary muffler is bellows shock-absorbing baffler, and the level Four baffler is vertical baffler.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, the thermal wind exhausting hole that is communicated with total heat extraction air cavity E on the outer casing is arranged at respectively on left outside shell, front casing and the rear casing, on the outer casing with advance the cold wind mouth that advances that cold wind chamber A is communicated with and be arranged at respectively on right casing and the front casing.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, the exhaust port on the thermal wind exhausting hole on the left outside shell of described outer casing and the described left bank spiracular plate is crisscross arranged.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, described main frame hollow air channel shell is assembled by some plate bodys, removably connects between each plate body.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention, wherein, be equipped with maintenance window on forward and backward, the upper clapboard of described internal box, the output shaft of petrol engine is the axis of cone, the rotor shaft of generator is provided with corresponding axis of cone hole, and the output shaft end of petrol engine places in the axis of cone hole of generator rotor shaft.

After adopting such scheme, air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention are arranged in the shell of main frame hollow air channel owing to main frame, main frame hollow air channel shell is located in the internal box, internal box is located in the outer casing, therefore in the shell of main frame hollow air channel, between main frame hollow air channel shell and the internal box, three grades of formation are heat insulation between internal box and the outer casing, noise reduction, and the centrifugation blade in the wind scooper of petrol engine the right and the left side of ventilating fan, under the effect of the air bells exhauster on the left clapboard of right fan blade and internal box, in the shell of main frame hollow air channel, between main frame hollow air channel shell and the internal box, form circulating cooling wind between internal box and the outer casing, the heat that produces in the unit working procedure is taken away, guarantee unit reliably working under near the condition of ambient temperature, and keep original output power; And electrical apparatus element are arranged at advancing in the A of cold wind chamber of unit right-hand member, can prolong the working life of electrical apparatus element, leave the gap between oil tank bottom and the internal box upper clapboard, and this gap guarantees that for advancing cold air path A1 gasoline is not vaporized.

Outer casing is divided into left and right outer casing, and left outside casing is removable, keeps in repair more convenient;

Outer casing is located on the chassis, and hot gas is discharged behind the chassis, further sound-deadening and noise-reducing, and tray bottom is equipped with directional wheel and two universal wheelss, and is convenient to the unit integrated moving;

Post fire-retardant noise reduction sponge, glass fibre and aluminium foil on main frame hollow air channel shell, internal box, outer casing and the chassis, reach further sound-deadening and noise-reducing and heat insulation effect;

The baffler assembly comprises the Pyatyi baffler, the gas that petrol engine is discharged satisfies emission compliance Europe 2 standards behind the catalyst converter of the first class sound arrester, successively through a pair of two utmost point baffler noise reduction shock-absorbings, again through third level master baffler, vertical duction enters the total baffler of level V behind a pair of fourth stage baffler, can reduce noise and reach 55 decibels to 60 decibels and damping, can not cause again the rated power of unit to descend.The baffler relief opening is designed with flange contact pin, can make things convenient for external baffler to use.

Exhaust port on thermal wind exhausting hole on the left outside shell of outer casing and the internal box left bank spiracular plate is crisscross arranged, and reduces noise in discharging hot air.

Main frame hollow air channel shell is assembled by some plate bodys, removably connects between each plate body, is equipped with maintenance window on forward and backward, the upper clapboard of internal box, is convenient to detachable maintaining.

Description of drawings

Fig. 1 is that the master of air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention looks sectional view;

Fig. 2 is that the M-M of Fig. 1 is to sectional view;

Fig. 3 is the plan view of air cooling twin-tub two utmost point low noise gasoline engine generator group main frames of the present invention and main frame hollow air channel shell part;

Fig. 4 is air cooling twin-tub two utmost point low noise gasoline engine generator group plan views of the present invention;

Fig. 5 is the plan view after the left outside casing of air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention is removed;

Fig. 6 is the left view of air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention;

Fig. 7 is air cooling twin-tub two utmost point low noise gasoline engine generator group right elevations of the present invention;

Fig. 8 is the plan view after the left outside casing of air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention pulls open left.

Specify air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention below in conjunction with accompanying drawing.

Embodiment

Such as Fig. 1, shown in 2, air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention comprise petrol engine 1, generator 2, the output shaft of petrol engine 1 is the axis of cone, the rotor shaft of generator 2 is provided with corresponding axis of cone hole, the output shaft end of petrol engine 1 places in the axis of cone hole of generator 2 rotor shafts, petrol engine 1 is connected to form main frame with generator 2, main frame be arranged in the main frame hollow air channel shell 3 and generator 2 on a left side, petrol engine 1 is on the right side, main frame hollow air channel shell 3 is assembled by the polylith plate body, removably connect between each plate body, main frame hollow air channel shell 3 is located in the internal box 4, internal box 4 is located in the outer casing 5, internal box 4 comprises base 41, left bank spiracular plate 42, left, right,

upper clapboard

43,44,45 and before, rear bulkhead, as shown in Figure 5, front dividing plate 46, all be hinged with maintenance window 47 on upper clapboard 45 and the rear bulkhead, be evenly equipped with exhaust port on the left bank spiracular plate 42, left, right clapboard 43, be equipped with vent on 44, outer casing 5 comprises loam cake 51, base plate 52, left,

right casing

53,54, and before, rear casing, loam cake 51 is located at outer casing 5 tops, outer casing 5 bottoms are provided with chassis 6, be provided with fuel tank assembly 8 in the loam cake 51, as shown in Figure 3, part near output shaft on the petrol engine 1 is provided with end cap 12, end cap 12 be provided with into, exhaust port, ventilating fan 11 is installed on the output shaft of petrol engine 1, ventilating fan 11 is positioned at end cap 12, ventilating fan 11 is provided with a left side, right fan blade 111,112, the shell 3 left ends sealing of main frame hollow air channel, right-hand member opens wide, at main frame hollow air channel shell 3 interior formation active chamber B, the left part of the base plate 33 of main frame hollow air channel shell 3 is provided with into cold passageway 31, position near ventilating fan 11 on shell 3 base plates 33 of main frame hollow air channel is provided with thermal wind exhausting passage 32, position corresponding with thermal wind exhausting passage 32 on the base plate 52 of outer casing 5 is provided with exhaust port 57, thermal wind exhausting passage 32 passes the base of internal box 4, end is located at exhaust port 57 places of outer casing 5, form work hot gas between internal box 4 inwalls and main frame hollow air channel shell 3 outer walls and distribute chamber D, form total heat extraction air cavity E between internal box 4 left bank spiracular plates 42 and the left clapboard 43, the middle part of the left clapboard 43 of internal box 4 is provided with air bells exhauster 48, such as Fig. 4, shown in 6, the left outside shell 53 of outer casing 5, be equipped with air outlet window on the front casing 55, be respectively equipped with left bank hot blast hole 531 on the air outlet window, front thermal wind exhausting hole 553 is communicated with total heat extraction air cavity E, the rear casing of outer casing 5 is provided with rear thermal wind exhausting hole and is communicated with total heat extraction air cavity E, and the exhaust port on the left bank hot blast hole on the left outside shell 53 of outer casing 5 531 and the left bank spiracular plate 42 is crisscross arranged, position corresponding with the front thermal wind exhausting hole 553 on outer casing 5 front casings 55 on the front dividing plate of internal box 4 is provided with interior thermal wind exhausting hole, the position in interior thermal wind exhausting hole and front thermal wind exhausting hole 553 mutual dislocation, form between the right clapboard 44 of internal box 4 and the right casing 54 of outer casing 5 and advance cold wind chamber A, electrical apparatus element such as controller etc. all are arranged in the A of cold wind chamber, such as Fig. 4, shown in 7, be equipped with on the right front shell 552 of outer casing 5 and on the right casing 54 into cold wind mouth 541 with advance cold wind chamber A and be communicated with, and advance cold wind chamber A and active chamber B, work hot gas distributes chamber D and is communicated with mutually, form between the bottom of internal box 4 top boards 45 and fuel tank assembly 8 and advance cold passageway A1, the about 20mm of distance between the top board 45 of the bottom of fuel tank assembly 8 and internal box 4, offer on the loam cake 51 of outer casing 5 with advance that cold passageway A1 is connected advance cold wind mouth 511, form between the bottom of the base 41 of internal box 4 and main frame hollow air channel shell 3 and advance cold passageway A5, advance cold passageway A5 and advance cold passageway 31 and be communicated with, distribute and be provided with two baffler thermal wind exhausting passages 7 in the D of chamber at work hot gas, two groups of baffler assemblies 71 are located at respectively in two baffler thermal wind exhausting passages 7, be communicated with between two baffler thermal wind exhausting passages 7 and the total heat extraction air cavity E, be equipped with the baffler passage on the base 41 of internal box 4 and the base plate 52 of outer casing 5.The modular type controller panel is located on the switch gate on the right casing 54, and storage battery is located at modular type controller panel below, and output slab is located at the front casing lower right.

Such as Fig. 1, shown in 2, chassis 6 inner chambers are by first, muscle 61 in second, 62 are divided into a left side, in,

right cavity

63,64,65, first, muscle 61 in second, 62 are welded in chassis 6 inner chambers, middle cavity 64 is separate cavities, left cavity 63 is exhaust cavity, right cavity 65 is air-inlet cavity, left cavity 63 be provided with that exhaust port is in communication with the outside and left cavity by the thermal wind exhausting hole on the upper cover plate 66 be communicated with thermal wind exhausting passage 32 on the main frame hollow air channel shell 3, right cavity 65 be provided with that inlet hole is in communication with the outside and right cavity 65 by the cold air inlet orifice on the upper cover plate 66 with advance cold air cavity A and be communicated with, 6 bottoms, chassis are left, part on the right side one group of directional wheel and one group of universal wheels are not installed.

Main frame hollow air channel shell 3 base plates 33 outer walls are equipped with antivibration pad 34, and antivibration pad 34 is bolted on the base 41 of internal box 4, and the base 41 of internal box 4 is fixed on the base plate 52 of outer casing 5.

Be convenient for maintaining, before the outer casing 5, rear casing and loam cake all are divided into left and right sides two-part, as shown in Figure 4, wherein front casing 55 is divided into a left side, right front shell 551,552, rear casing is divided into a left side, right back shell, loam cake is divided into a left side, upper right lid, left front shell 551 wherein, left back shell, left upper cover and left outside shell 53 form left outside casing, right front shell 552, right back shell, upper right lid and right casing 54 form right outside casing, right outside casing is fixed on the chassis 6, before internal box 4 bases 41, be respectively equipped with front groove beam on the rear edge, the pit beam, the lower limb of left front shell 551 and left back shell is located at respectively front groove beam, in the pit beam, at described front groove beam, pit beam and left front shell, be equipped with ball bearing between the left back shell lower limb, left outside bottom half is provided with pulley 554, left, right front shell 551, between 552, left, a between the right back shell and left side, all be bolted between the upper right lid and be integrated, as shown in Figure 8, left outside casing can pull open left, also be provided with suspension ring 512 on the left upper cover, right outside casing is provided with pushing handle 513.

Main frame hollow air channel shell 3 internal surfaces post the fire-retardant noise reduction sponge of 6mm, 8mm glass fibre and 0.2 aluminium foil are posted in base 41 inboards of described internal box 4, before the internal box 4, after, right, distribute the corresponding position inwall of chamber D with work hot gas on the upper clapboard and post the 12mm flame-retardant sponge, outer wall posts the 6mm flame-retardant sponge, the top board internal surface posts flame-retardant sponge, left clapboard 43 left sides are posted 8mm glass fibre and 0.35mm aluminium foil from inside to outside successively, glass fibre is posted on the right side from inside to outside successively, aluminium foil and flame-retardant sponge, outer casing 5 front and back outer casing inner walls all post the 6mm flame-retardant sponge, the upper cover plate 66 on chassis 6 inside and outside in the both sides and first both sides of muscle 61 all post 8mm glass fibre and 0.2mm aluminium foil.

Such as Fig. 1, shown in 2, every group of baffler assembly 71 comprises one, two, three, four, Pyatyi baffler 72,73,74,75,76, the first class sound arrester 72 1 ends are connected on the relief opening of petrol engine 1 by flange, the other end and secondary muffler 73 are welded to each other, the first class sound arrester 72 outer automatic air compensating valves that are equipped with, in catalyst converter is housed, secondary muffler 73 is the bellows baffler, secondary muffler 73 connects three successively, level Four

baffler

74,75,76, one,

secondary muffler

72,73 are arranged in the baffler thermal wind exhausting passage 7, three, level Four

baffler

74,75 are arranged in the heat extraction air cavity E, Pyatyi baffler 76 is located in the left cavity 63 on chassis 6, and the relief opening of Pyatyi baffler 76 is provided with flange, secondary muffler 73 is bellows shock-absorbing baffler, and level Four baffler 75 is vertical baffler.

Above-mentioned petrol engine 1 is 3000 rev/mins-3600 rev/mins of 4 stroke gasoline engines, and generator 2 is the 50-60HZ synchronous generator.

Air cooling twin-tub two utmost point low noise gasoline engine generator groups of the present invention in the course of the work, centrifugation blade in petrol engine 1 the right wind scooper is responsible for pulling plate is advanced most of the row to after the cylinder head heat radiation of wind that the cold wind mouth is drawn into, E1 hot gas is discharged the E chamber to unit from baffler passage 7, and fraction is as petrol engine 1 outer surface heat transmission; The right fan blade 112 of the ventilating fan 11 in petrol engine 1 protecgulum, heat B1, the B2 that distribute on the surface when being responsible for main frame hollow air channel shell 3 interior generators 2 and petrol engine 1 work drain into outside the unit through right fan blade work through the left cavity 63 that thermal wind exhausting passage 32 drains into chassis 6 again, and when right fan blade 112 exhaust inspiration the A2A3A4 cool air, take away the B1B2 hot gas that part petrol engine 1 and generator 2 surperficial heats form, the left cavity 63 that drains into chassis 6 through thermal wind exhausting passage 32 drains into outside the unit again; The left fan blade 111 of ventilating fan 11 rotates, and cold wind sucks the work calories of taking away stator and rotor in the generator 2 through advancing cold passageway A5, converts B3 hot gas to and drains into outside the unit through the left cavity 63 that thermal wind exhausting passage 32 drains into chassis 6 again; Air bells exhauster 48 is responsible for draining into the hot air pump drainage in the D chamber of internal box 4 to E chamber outside the unit again, during air bells exhauster 48 work, the cool air that tapping sucks from internal box 4 right clapboards is taken away heat that heat that main frame hollow air channel shell 3 outer surfaces distribute and baffler air channel 7 outer surfaces distribute and is converted to D1D2 hot gas and is pumped to the E chamber and drains into outside the machine.By said process, guaranteed unit reliably working under near the condition of ambient temperature, and kept original output power; The gas that petrol engine is discharged satisfies emission compliance Europe 2 standards behind the first class sound arrester, through two, three, behind the level Four baffler, can reduce noise and reach 55 decibels to 60 decibels, can not cause again the rated power of unit to descend successively, effective control by to the unit noise reaches 60db/7m.The baffler relief opening is provided with flange simultaneously, can make things convenient for external baffler to use.

Internal layer is main frame hollow air channel shell 3, the mechanicalness noise that main frame hollow air channel shell 3 inwalls produce when pasting thick sponge for elimination petrol engine and generator work and heat insulation, heat insulation, the noise reduction of the first order of formation unit; Internal box 4 wraps in main frame hollow air channel shell 3 wherein, and internal surface pastes thick sponge, and left clapboard Double-face adhesive glass fibre and thick aluminum foil form heat insulation, the noise reduction in the second level; Outer casing 5 is surrounded internal box 4 wherein, forms heat insulation, the noise reduction of the third level.

The above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims

1. air cooling twin-tub two utmost point low noise gasoline engine generator groups, comprise petrol engine (1), generator (2), the rotor shaft of the output shaft of petrol engine (1) and generator (2) is connected to form main frame, described main frame be arranged in the internal box (4) and generator (2) on a left side, petrol engine (1) is on the right side, internal box (4) is located in the outer casing (5), it is characterized in that: also be provided with main frame hollow air channel shell (3) in the described internal box (4), described main frame is arranged in the main frame hollow air channel shell (3), the sealing of main frame hollow air channel shell (3) left end, right-hand member opens wide, in main frame hollow air channel shell (3), form active chamber B, internal box (4) comprises base (41), left bank spiracular plate (42), left, right, upper clapboard (43,44,45) and before, rear bulkhead, left bank spiracular plate (42) is provided with exhaust port, left, right clapboard (43,44) be equipped with vent on, outer casing (5) comprises loam cake (51), base plate (52), left, right casing (53,54), and before, rear casing, loam cake (51) is located at outer casing (5) top, be provided with fuel tank assembly (8) in the loam cake (51), the upper part near output shaft of petrol engine (1) is provided with end cap (12), end cap (12) be provided with into, exhaust port, ventilating fan (11) is installed on the output shaft of petrol engine (1), ventilating fan (11) is positioned on the end cap (12), ventilating fan (11) is provided with a left side, right fan blade (111,112), the left part of the base plate (33) of main frame hollow air channel shell (3) is provided with into cold passageway (31), the upper position near ventilating fan (11) of main frame hollow air channel shell (3) base plate (33) is provided with thermal wind exhausting passage (32), the upper position corresponding with thermal wind exhausting passage (32) of the base plate (52) of outer casing (5) is provided with exhaust port (57), thermal wind exhausting passage (32) passes the base (41) of internal box (4), end is located at the exhaust port (57) of outer casing (5) and is located, form work hot gas between internal box (4) inwall and main frame hollow air channel shell (3) outer wall and distribute chamber D, form total heat extraction air cavity E between internal box (4) left bank spiracular plate (42) and the left clapboard (43), the left clapboard (43) of internal box (4) is provided with air bells exhauster (48), outer casing (5) is provided with the thermal wind exhausting hole and is communicated with total heat extraction air cavity E, form between the right clapboard (44) of internal box (4) and the right casing (54) of outer casing (5) and advance cold wind chamber A, outer casing (5) be provided with into the cold wind mouth with advance cold wind chamber A and be communicated with, and advance cold wind chamber A and active chamber B, work hot gas distributes chamber D and is communicated with mutually, form between internal box (4) top board (45) and fuel tank assembly (8) bottom and advance cold passageway A1, offer on the loam cake (51) of outer casing (5) with advance that cold passageway A1 is connected advance cold wind mouth (511), form between the base (41) of internal box (4) and the bottom of main frame hollow air channel shell (3) and advance cold passageway A5, advance cold passageway A5 and advance cold passageway (31) and be communicated with, distribute and be provided with two baffler thermal wind exhausting passages (7) in the D of chamber at work hot gas, two groups of baffler assemblies (71) are located at respectively in two baffler thermal wind exhausting passages (7), two baffler thermal wind exhausting passages (7) all are communicated with total heat extraction air cavity E, are equipped with the baffler passage on the base (41) of internal box (4) and the base plate (52) of outer casing (5).

2. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 1, it is characterized in that: described main frame hollow air channel shell (3) base plate (33) outer wall is equipped with antivibration pad (34), antivibration pad (34) is bolted on the base (41) of internal box (4), and the base (41) of internal box (4) is fixed on the base plate (52) of outer casing (5).

3. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 2, it is characterized in that: before the described outer casing (5), rear casing and loam cake all are divided into left and right sides two-part, wherein front casing (55) is divided into a left side, right front shell (551,552), rear casing is divided into a left side, right back shell, loam cake is divided into a left side, upper right lid, left front shell (551) wherein, left back shell, left upper cover and left outside shell (53) form left outside casing, right front shell (552), right back shell, upper right lid and right casing (54) form right outside casing, right outside casing is fixed on the chassis (6), before internal box (4) base (41), be respectively equipped with front groove beam on the rear edge, the pit beam, the lower limb of left front shell (551) and left back shell is located at respectively front groove beam, in the pit beam, at described front groove beam, pit beam and left front shell, be equipped with ball bearing between the left back shell lower limb, in the pit beam, left outside bottom half is provided with pulley (554), left, right front shell (551,552) between, a left side, a between the right back shell and left side, all be bolted between the upper right lid and be integrated.

4. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 3, it is characterized in that: described outer casing (5) bottom is provided with chassis (6), described chassis (6) inner chamber is by first, muscle (61 in second, 62) be divided into a left side, in, right cavity (63,64,65), middle cavity (64) is separate cavities, left cavity (63) is exhaust cavity, right cavity (65) is air-inlet cavity, left cavity (63) be provided with that exhaust port is in communication with the outside and left cavity by the thermal wind exhausting hole on the upper cover plate (66) be communicated with thermal wind exhausting passage (32) on the main frame hollow air channel shell (3), right cavity (65) be provided with that inlet hole is in communication with the outside and right cavity (65) by the cold air inlet orifice on the upper cover plate (66) with advance cold air cavity A and be communicated with, chassis (6) bottom is left, part on the right side one group of directional wheel and one group of universal wheels are not installed.

5. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 4, it is characterized in that: described main frame hollow air channel shell (3) internal surface posts fire-retardant noise reduction sponge, glass fibre and aluminium foil are posted in base (41) inboard of described internal box (4), before the internal box (4), after, right, distribute the corresponding position inwall of chamber D with work hot gas on the upper clapboard and post the 12mm flame-retardant sponge, outer wall posts the 6mm flame-retardant sponge, the top board internal surface posts flame-retardant sponge, left clapboard (43) left side is posted glass fibre and aluminium foil from inside to outside successively, glass fibre is posted on the right side from inside to outside successively, aluminium foil and flame-retardant sponge, outer casing inner wall all posts flame-retardant sponge before and after the outer casing (5), the upper cover plate (66) of chassis (6) inside and outside in the both sides and first both sides of muscle (61) all post glass fibre and aluminium foil.

6. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 5, it is characterized in that: described baffler assembly (71) comprise be fixedly connected sequentially one, two, three, four, Pyatyi baffler (72,73,74,75,76), the first class sound arrester (72) one ends are connected on the relief opening of petrol engine (1) by flange, the other end and secondary muffler (73) are fixedly connected, the outer automatic air compensating valve that is equipped with of the first class sound arrester (72), in catalyst converter is housed, one, secondary muffler (72,73) be arranged in the baffler thermal wind exhausting passage (7), three, level Four baffler (74,75) be arranged in the heat extraction air cavity E, Pyatyi baffler (76) is located in the left cavity (63) on chassis (6), secondary muffler is bellows shock-absorbing baffler, and the level Four baffler is vertical baffler.

7. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 6, it is characterized in that: the thermal wind exhausting hole that the upper and total heat extraction air cavity E of outer casing (5) is communicated with is arranged at respectively on left outside shell (53), front casing (55) and the rear casing, on the outer casing (5) with advance the cold wind mouth that advances that cold wind chamber A is communicated with and be arranged at respectively on right casing (54) and the front casing (55).

8. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 7, it is characterized in that: the thermal wind exhausting hole on the left outside shell (53) of described outer casing (5) and the exhaust port on the described left bank spiracular plate (42) are crisscross arranged.

9. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 8, it is characterized in that: described main frame hollow air channel shell (3) is assembled by some plate bodys, removably connects between each plate body.

10. air cooling twin-tub two utmost point low noise gasoline engine generator groups as claimed in claim 9, it is characterized in that: be equipped with maintenance window on forward and backward, the upper clapboard of described internal box (4), the output shaft of petrol engine (1) is the axis of cone, the rotor shaft of generator (2) is provided with corresponding axis of cone hole, and the output shaft end of petrol engine (1) places in the axis of cone hole of generator (2) rotor shaft.