WO2008019566A1

WO2008019566A1 - A cooling system of a digit generating unit of vertical diesel engine

Info

Publication number: WO2008019566A1
Application number: PCT/CN2007/002121
Authority: WO
Inventors: Henglin Xiao
Original assignee: Wuxi Kipor Power Co., Ltd.
Priority date: 2006-08-11
Filing date: 2007-07-11
Publication date: 2008-02-21
Also published as: CN1936295A

Abstract

A cooling system of a digit generating unit of vertical diesel engine is provided, wherein a wind cowl (1), an inlet pipe (2) and a vertical diesel engine casing (3) form a main cooling ventilating chamber (A); a left wind plate (5), a right wind plate (6), an upside wind cowl (4), a cylinder cover (13) and the vertical diesel engine casing form left and right main cooling ventilating chambers (B, C) at the upside of the cylinder; an underside wind plate (7) is fixed at the bottom of the vertical diesel engine casing (3); a side cover (8) fixed on the vertical diesel engine casing (3) and the casing (3) form a bottom main cooling ventilatingchamber (D); and the side cover (8) and a back cowl (9) of a sound absorber fixed on the side cover (8) form a sub-cooling cycle chamber (E). The system uses the main cooling ventilating chamber, the left and right main cooling ventilating chambers, the bottom main cooling ventilating chamber and the sub-cooling cycle chamber to stepped cool the heating components of the digit generating unit of vertical diesel engine, so cooling efficiency is high.

Description

Cooling system for vertical diesel engine digital power generation unit

The invention relates to a cooling system for a vertical diesel engine digital power generation unit, in particular to a vertical diesel engine digital generator set suitable for forced air cooling, belonging to the field of power generation devices.

Background technique

The forced air-cooled vertical diesel digital power generation unit requires sufficient ambient temperature air to cool the cylinders of the vertical diesel engine, the cylinder head, the lubricating oil shell of the vertical diesel engine, the permanent magnet generator, the exhaust pipe and the silencer. Because the above parts have large heat and high temperature, it is required to dissipate heat in time to ensure the good continuous operation and long service life of the vertical diesel digital power generation unit.

Before the present invention was made, in the prior art, the diesel engine cooling device inside the forced air-cooled diesel power generation unit usually adopts a cylinder-enclosed cooling ventilation chamber, that is, the air hood and the air deflector are used to surround the cylinder of the diesel engine, and are sucked by the fan. The cooling air enters the cylinder to cool, and the cooling of the lubricating oil shell and the muffler of the diesel engine is generally natural air cooling, and the silencer is sometimes insulated by the insulation material; the cooling structure cannot guarantee the removal of the diesel power generation unit. The parts with large heat generation outside the cylinder (such as the oil casing at the bottom of the diesel engine, the exhaust pipe of the diesel engine, and the muffler) are cooled in time and efficiently.

Summary of the invention

The object of the present invention is to overcome the above-mentioned deficiencies, thereby providing a main cooling ventilating cavity of a permanent magnet generator, two main cooling ventilating cavities on the left and right sides of a vertical diesel engine, a main cooling ventilating cavity of a lubricating oil shell at the bottom of a vertical diesel engine, and a muffling The cooling circulation chamber of the device constitutes a cooling system; the cooling channel has a large number of joint surfaces, and can reasonably utilize the cooling air to perform cascade cooling of the heating part of the vertical diesel digital power generation unit in the above ventilation chamber, thereby realizing the vertical diesel engine digital power generation unit. High-efficiency cooling, combined with sound insulation, heat insulation, long life, vertical diesel engine digital power generation unit cooling system.

The main solution of the invention is achieved in this way:

The invention adopts an air guiding hood and a vertical diesel casing body, and the air inlet pipe is connected with the cylinder head. The upper left air guiding plate and the right air guiding plate of the vertical diesel engine are fastened to the side of the vertical diesel engine casing, and the permanent magnet generator stator is fixed. On the box of the vertical diesel engine, the permanent magnet generator rotor is fixed on the crankshaft of the diesel engine, the fan is fixed on the rotor of the permanent magnet generator, the silencer is fixed on the exhaust pipe, and the exhaust pipe is fixed on the cylinder head, the cylinder The cover is fixed on the vertical diesel engine case, and the muffler rear cover is fixed on the vertical diesel engine side. Covered, the vertical diesel engine side cover is fixed on the box body of the vertical diesel engine, which is characterized in that the air guiding hood, the air inlet pipe and the vertical diesel engine body constitute a main cooling ventilating cavity of the permanent magnet generator; the upper hood is fastened On the left and right air deflectors, the left and right air deflectors are fastened to the vertical diesel chassis, and the left air deflector, the right air deflector, the upper air duct, the cylinder head and the upper part of the vertical diesel engine are left. The vertical diesel engine casing with the right air guide plate mating surface constitutes two main cooling ventilation chambers on the left and right sides of the vertical diesel engine; the lower air guide plate is fastened to the bottom of the vertical diesel engine casing, and is fixed on the vertical diesel engine body. The diesel engine side cover and the vertical diesel chassis form the main cooling ventilation chamber of the vertical diesel engine bottom lubricating oil shell; the vertical diesel engine side cover and the muffler rear cover fixed on the vertical diesel engine side cover constitute a silencer secondary cooling circulation chamber .

In the upper air hood of the present invention, a socket is formed, and two holes are opened, one hole is provided for exposing the cylinder head cover, and the other hole is provided for exposing the fuel injector.

The vertical diesel engine side cover, the upper air hood, the left air deflector, the right air deflector, the lower air deflector, and the muffler rear cover are respectively provided with matching grooves.

The upper air hood of the present invention, the upper left air deflector of the vertical diesel engine, the right air deflector, and the lower air deflector may respectively be coated with a thin aluminum paper on the surface of the ventilation chamber, or may not be attached with a thin aluminum paper.

The present invention has the following advantages over the prior art:

The invention has the advantages of simple structure, compactness and reasonable arrangement; the main cooling ventilation chamber of the permanent magnet generator, the two main cooling ventilation chambers of the upper cylinder of the vertical diesel engine, the main cooling ventilation chamber of the bottom lubricating oil shell of the vertical diesel engine, and the secondary cooling of the silencer The circulation cavity constitutes the cooling system; the heat generation of the permanent magnet generator in the main cooling ventilation cavity of the permanent magnet generator is significantly smaller than the two main cooling ventilation chambers in the upper cylinder of the vertical diesel engine, and the main cooling ventilation of the lubricating oil at the bottom of the vertical diesel engine The heat generated by the cylinder, the cylinder head and the lubricating oil shell of the vertical diesel engine, the temperature of the exhaust pipe and the silencer in the secondary cooling ventilation chamber of the muffler are the highest among the above-mentioned vertical diesel digital power generation units, so the cooling wind is always The temperature rise in the main cooling ventilating cavity of the magneto generator is small, and then the cylinder, the cylinder head and the lubricating oil shell of the diesel engine are cooled separately, and the exhaust pipe and the muffler with the highest cooling temperature are finally arranged, so that the cooling is reasonably arranged. The wind direction realizes the step cooling of the heating part of the power generation unit; the cooling channel has more structural joint surfaces and can be rationally utilized. The cooling air performs step cooling on the heating part of the vertical diesel digital power generation unit in the above ventilation chamber, which achieves high-efficiency cooling of the vertical diesel digital power generation unit, and has both sound insulation and heat insulation, and has a long service life.

DRAWINGS

Figure 1 is an exploded view of the structure of the present invention;

Figure 2 is a schematic view showing the longitudinal structure of the structure of the present invention; Figure 3 is a schematic view showing the lateral structure of the structure of the present invention;

Figure 4 is a schematic view showing the temperature change of the structural cooling air of the present invention;

Figure 5 is a schematic view of the heat taken away by the structure cooling wind of the present invention.

detailed description

The invention will be further described below in conjunction with the embodiments of the drawings:

The invention mainly comprises an air hood 1, an air intake pipe 2, a vertical diesel engine body 3, an upper air hood 4, a left air deflector 5, a right air deflector 6, a lower air deflector 7, and a vertical diesel engine side cover 8. , muffler rear cover 9, fan 10, permanent magnet generator stator 11-1, permanent magnet generator rotor 11-2, diesel engine crankshaft 12, cylinder head 13, exhaust pipe 14, muffler 15, cylinder head cover 16 and so on.

The air hood 1 of the present invention is made of plastic grease or metal, and is connected with a vertical diesel casing 3 by bolts. The intake pipe 2 is made of plastic or metal and is connected with the cylinder head 13 by bolts; 1. The intake pipe 2 and the vertical diesel casing body 3 with the air guiding plate matching surface constitute the main cooling ventilation chamber A; the upper left air guiding plate 5 and the right air guiding plate 6 of the vertical diesel engine are made of plastic grease or metal. The upper part of the vertical diesel engine is fastened by bolts to the upper part of the vertical diesel engine; the upper air hood 4 with the appropriate cylinder head cover 16 exposed and the exposed hole of the injector is fastened to the left and right air deflectors 5 by bolts. 6; the cylinder head 13 is bolted to the vertical diesel casing 3; the left air deflector 5, the right air deflector 6, the upper air duct 4, the cylinder head 13 and the vertical diesel engine upper left and right The vertical diesel engine casing 3 of the wind deflector mating surface constitutes two left and right main cooling ventilation chambers C of the vertical diesel engine; the lower air deflector 7 is made of plastic grease or metal, and is fastened by bolts to the vertical diesel casing body. 3 bottom, and bolted to the vertical diesel chassis 3, vertical diesel engine side cover 8 and stand The diesel engine casing 3 constitutes the bottom main cooling ventilation chamber D of the vertical diesel engine; the vertical diesel engine side cover 8 and the muffler rear cover 9 fixed on the vertical diesel engine side cover 8 constitute a secondary cooling circulation chamber E; the above main cooling The fan chamber A is equipped with a fan 10 and a permanent magnet generator. The permanent magnet generator stator 11-1 is bolted to the box body 3 of the vertical diesel engine, and the permanent magnet generator rotor 11-2 is bolted to the crankshaft 12 of the diesel engine, and the fan 10 is bolted to the permanent magnet generator. On the rotor 11-2. The cooling air sucked in by the fan 10 first cools the permanent magnet generator in the A chamber while also cooling the surface of the vertical diesel casing 3 in the A chamber. Secondly, the cooling air is divided into three main cooling ventilating chambers B and C on the left and right sides of the diesel engine and the main cooling ventilating chamber D on the bottom of the diesel engine, respectively cooling the cylinder fins on the vertical diesel casing 3 and the fins on the cylinder head 13, The heat dissipating surface of the lubricating oil shell at the bottom of the vertical diesel casing body 3, and then cooling the exhaust pipe after collecting in the E cavity through the vertical diesel engine side cover 8 which is provided with the muffler rear cover 9 and the air guiding plate 3 matching groove 14 and a muffler 15, wherein the muffler 15 is bolted to the exhaust pipe 14 with a muffler gasket interposed therebetween The muffler 14 is also bolted to the vertical diesel engine side cover 8, and the exhaust pipe 14 is fixed to the cylinder head 13 with an exhaust pipe gasket interposed therebetween, and finally discharged through the muffler rear cover 9. It can be seen from the schematic diagram of the final assembly: the air hood 1 is connected with the vertical diesel engine casing 3, the upper air hood 4, the upper left air deflector 5, the right air deflector 6, and the lower air deflector 7 of the vertical diesel engine. Therefore, an engagement groove is formed in the fitting portion of the air hood 1 to engage the upper air hood 4, the upper left air deflector 5 of the vertical diesel engine, the right air deflector 6 and the lower air deflector 7; in the vertical diesel engine The fitting portion of the casing 3 is formed with a corresponding fitting groove of the air guiding hood 1 to fasten and engage the air guiding hood 1.

The upper hood 4 of the present invention has a plug-and-fit requirement with the upper left air deflector 5, the right air deflector 6, and the vertical diesel engine side cover 8 of the vertical diesel engine, so that the corresponding joints of the upper air hood 4 are correspondingly connected. a slot for engaging and sealing the upper left air deflector 5, the right air deflector 6, and the vertical diesel side cover 8 of the diesel engine; at the same time, the upper air hood 4 is provided with a suitable cylinder cover and an exposed hole of the injector, Easy to access without having to remove parts.

The vertical diesel casing body 3 of the present invention has corresponding mating surfaces at the joints of the upper left air deflector 5, the right air deflector 6, and the lower air guiding hood 7 of the vertical diesel engine to ensure sealing requirements. The vertical diesel engine side cover 8 and the upper air hood 4, the vertical diesel upper left air deflector 5, the right air deflector 6, the lower air deflector 7, and the muffler rear cover 9 are respectively provided with corresponding joints. The matching groove ensures the sealing and fastening requirements; as the above measures reach the sealing requirements of the main cooling ventilation chambers A, B, C, D and the secondary cooling circulation chamber E.

If necessary, a thin aluminum paper may be attached to the inner surface of the upper air deflector 4, the upper left air deflector 5, the right air deflector 6, and the lower air deflector 7 to enhance the heat source reflection and reduce the self-heating. Temperature; Flame-retardant sponge strips can also be applied to all areas where there is a mating fit for further sealing.

The air hood 1 of the present invention can be molded by plastic molding, thereby reducing the overall weight; the upper left air deflector 5, the right air deflector 6, and the lower air deflector 7 of the vertical diesel engine are all injection molded from a high temperature resistant plastic material. This can reduce the weight and reduce the cost; the vertical diesel chassis 3, the cylinder head 13, the vertical diesel engine side cover 8, and the cylinder head cover 16 are all pressure-cast from aluminum alloy or magnesium alloy, which can increase The cooling effect of the diesel engine is reduced, and the sealing requirements and simple assembly requirements of the assembly can be achieved. The exhaust pipe 13 is generally made of cast iron and can also be made of steel. The muffler is generally made of metal, which is resistant to high temperatures. Has good thermal conductivity.

The air hood of the present invention, the upper air hood 4, the upper left air deflector 5 of the vertical diesel engine, the right air deflector 6, the lower air deflector 7, the vertical diesel engine body 3, the vertical diesel engine side cover 8, the cylinder The cover 16 and the mating fit of the components of the muffler rear cover 9 and the bolt and nut lock function can achieve the sealing requirements and simple assembly requirements after assembly.

Claims

Rights request

1. A cooling system for a vertical diesel engine digital power generation unit, which is connected to a vertical diesel engine casing (3) by an air hood (1), and an air intake pipe (2) connected to a cylinder head (13), a vertical diesel engine upper left The air deflector (5) and the right air deflector (6) are fastened to the side of the vertical diesel casing (3), and the permanent magnet generator stator (11-1) is fixed to the box (3) of the vertical diesel engine. The permanent magnet generator rotor (11 - 2) is fixed to the crankshaft (12) of the diesel engine, the fan (10) is fixed to the permanent magnet generator rotor (11 - 2), and the muffler (15) is fixed to the exhaust pipe (14). The exhaust pipe (14) is fixed to the cylinder head (13), and is characterized in that the air guiding cover (1), the intake pipe (2) and the vertical diesel casing (3) constitute a main cooling ventilation chamber (A) The upper air hood (4) is fastened to the left and right air deflectors (5), (6), and the cylinder head (13) is fixed to the vertical diesel engine box (3), and the left air deflector (5) ), the right air deflector (6), the upper air duct (4), the cylinder head (13) and the vertical diesel chassis (3) form the left and right main cooling passages of the upper part of the vertical diesel engine Cavity (B, C); The lower air deflector (7) is fastened to the bottom of the vertical diesel chassis (3), fixed to the vertical diesel chassis (3), the vertical diesel side cover (8) and the vertical diesel engine The box body (3) constitutes the main cooling ventilation chamber (D) of the vertical diesel engine; the vertical diesel engine side cover (8) and the muffler rear cover (9) fixed on the vertical diesel engine side cover (8) constitute sub-cooling Circulation chamber (E).

2 . The cooling system of a vertical diesel digital power generation unit according to claim 1 , wherein the upper air hood ( 4 ) has a connection slot and an exposed cylinder cover ( 16 ). The hole and the opening have a hole that exposes the injector.

3. A cooling system for a vertical diesel engine power generation unit according to claim 1 or 2, characterized in that said side cover (8), upper air hood (4), left air deflector (5) The matching grooves are formed at the joints of the right air deflector (6), the lower air deflector (7), and the muffler rear cover (9).

4. A cooling system for a vertical diesel digital power generation unit according to claim 1 or 2, characterized in that said upper air hood (4), vertical diesel upper left air deflector (5), right Air deflector. (6), lower air deflector (7) A thin layer of aluminum paper is attached to each other when necessary to form the surface of the ventilation chamber.

A cooling system for a vertical diesel digital power generation unit according to claim 3, characterized in that the upper air hood (4), the upper left air deflector (5) of the vertical diesel engine, and the right wind guide The plate (6) and the lower air deflector (7) are respectively attached with a thin layer of aluminum paper on the surface constituting the ventilation chamber.