Heat dissipation structure of high-power dual-purpose fuel mute type generator set

Abstract

The utility model discloses a heat dissipation structure of a high-power dual-purpose fuel mute type generator set, and belongs to the technical field of dual-purpose fuel generator sets. According to the utility model, a box type built-in sound-absorbing cotton design is adopted, so that rainproof and mute effects can be achieved; a rotor fan is arranged at a generator driving end, a mechanical fan is arranged on an engine water pump wheel, and an electronic fan on a radiator assembly is matched with an air inlet and an air outlet on a case to meet the radiating requirement; a control panel system, an engine pressure reducing valve and a scavenging air valve are axially arranged, an engine, a generator and a heat dissipation assembly are axially arranged, an engine air filter and a 12V storage battery are arranged up and down and then are axially arranged with an engine silencer, and the internal space of a unit is fully utilized, so that the unit is compact in layout and smaller in size; in the running process of the unit, the engine ECU can automatically switch the fuel state by judging whether the engine rotating speed, the water temperature and the fuel gas pressure reach target values or not, and the conditions of engine rotating speed fluctuation, even shutdown and the like cannot be caused.

Description

Technical Field

[0001] This utility model belongs to the technical field of dual-fuel generator sets, specifically relating to a heat dissipation structure for a high-power dual-fuel silent generator set. Background Technology

[0002] Traditional generator sets typically use diesel engines for power output when the power output is greater than 19kW due to fuel cost considerations. However, diesel engines are noisier, larger, and heavier than gasoline engines at the same power output. Furthermore, high-power generator sets usually have a large enclosure size or an open frame structure to meet heat dissipation requirements. Utility Model Content

[0003] This invention addresses the issues of operating cost, noise, and heat dissipation in generator sets with rated power between 19kW and 60kW. It provides a high-power, dual-fuel, silent generator set heat dissipation structure. By employing a dual-fuel (gasoline and natural gas) power system, it reduces operating costs while using a box-type structure and optimizing the heat dissipation system. Compared to generator sets of the same power, it offers advantages such as lower operating costs, lower noise, smaller size, and lighter weight.

[0004] The technical solution adopted by this utility model is:

[0005] A high-power dual-fuel silent generator set cooling structure includes a housing and a rotor fan, fuel tank tray, radiator mounting plate, engine, generator, mechanical fan, and radiator disposed inside the housing. An engine cover is installed in the gap between the upper door of the housing and the engine. The fuel tank tray and radiator mounting plate are fixed to the left and right sides of the engine cover, respectively. The left and right sealing plates of the housing and the chassis directly below the engine are provided with grid mesh holes. The rotor fan is located at the connection between the engine and the generator and is mounted on the rotor shaft of the generator. The rear end cover of the generator of the engine is provided with mesh holes. The mechanical fan rotates coaxially with the water turbine pump of the engine through an adapter block. The electric fan and radiator are fixed to the left and right sides of the radiator mounting plate of the housing, respectively.

[0006] Compared with the prior art, the present invention has the following advantages:

[0007] 1. The unit of this utility model adopts a box-type built-in sound-absorbing cotton design, which can achieve rainproof and quiet operation. Compared with other box-type units, this utility model adds an engine cover with sound-absorbing cotton, which has better sound insulation effect on the basis of aesthetics.

[0008] 2. Heat dissipation of the box-type built-in sound-absorbing cotton structure is a problem. The excessive temperature inside the box affects the efficiency of the generator and the cooling of the engine. Using the engine cooling assembly (water tank) alone to dissipate heat from the generator set requires a large-capacity cooling assembly (water tank) to meet the heat dissipation requirements of the generator set. The size of the box not only increases significantly but also results in poor internal heat dissipation. To address the above problems, this utility model installs a rotor fan on the generator drive end, a mechanical fan on the engine water pump wheel, and an electronic fan on the radiator assembly, which, together with the air inlet and outlet on the box, meet the heat dissipation requirements.

[0009] 3. The control panel system, engine pressure reducing valve, and air exchange valve of this utility model are axially arranged. The engine, generator, and cooling assembly are also axially arranged. The engine air filter and 12V battery are arranged vertically and then axially arranged with the engine muffler (in the past, the engine air filter was arranged at the top of the engine. Changing the position can save the height of the unit). This makes full use of the internal space of the unit to achieve a compact layout and smaller size. During the operation of the unit, the engine ECU can automatically switch the fuel state by judging whether the engine speed, water temperature, and gas pressure have reached the target value. During this process, there will be no fluctuation in engine speed or even shutdown.

[0010] 4. This utility model has a compact structure and smaller size while meeting the heat dissipation requirements of the unit. The unit also has the advantages of high power, quiet operation, small size and economy, and can be applied to more scenarios such as banks, hospitals, and municipal facilities. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the water pump impeller, mechanical fan and electronic fan of this utility model;

[0013] Figure 3 This is an external schematic diagram of the present invention;

[0014] Figure 4 This is a rear view of the internal layout of this utility model;

[0015] The components include: 1. Engine cover; 2. Engine compartment top door; 3. Engine air rail; 4. Left sealing plate; 5. Generator; 6. Rotary fan; 7. Engine compartment chassis; 8. Right sealing plate; 9. Mechanical fan cover; 10. Mechanical fan; 11. Electric fan; 12. Radiator; 13. Fuel tank tray; 14. Air guide duct; 15. Generator rear end cover; 16. Radiator mounting plate; 17. Engine; 18. Water turbine pump; 19. Adapter block; 20. Muffler; 21. Pressure reducing valve; 22. Exhaust valve; 23. Fuel filter; 24. 12V battery; 25. Air filter; 26. Control panel system; 27. CNG high-pressure conduit pre-drilled hole; 28. Load plug. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0017] like Figures 1-4 As shown, this utility model provides a high-power dual-fuel silent generator set heat dissipation structure, including a housing and a rotor fan 6, a fuel tank tray 13, a radiator mounting plate 16, an engine 17, a generator 5, a mechanical fan 10, and a radiator 12 disposed inside the housing.

[0018] The enclosure houses an engine 17 and a generator 5. Except for the air inlet and outlet, the interior of the enclosure is lined with sound-absorbing cotton. An engine cover 1 (with sound-absorbing cotton at the bottom) is installed in the gap between the upper door 2 of the enclosure and the engine 17 to achieve rainproof and noise reduction for the unit. The front and rear sides of the engine cover 1 are respectively located on the upper front crossbeam and upper rear crossbeam inside the enclosure and are secured with several M8*16 screws.

[0019] The fuel tank tray 13 and the radiator mounting plate 16 are respectively fixed to the left and right sides of the engine cover 1 using several M8*16 screws.

[0020] The left sealing plate 4, right sealing plate 8, and chassis 7 directly below the engine 17 of the housing are equipped with grid mesh holes to facilitate air exchange between the inside and outside of the housing during unit operation.

[0021] Air guide channels 14 are installed at the grid openings of the left sealing plate 4. These channels, while providing ventilation, cause sound to bend during propagation, thus achieving sound absorption and insulation.

[0022] The left sealing plate 4 and the chassis base 7 have mesh grilles for air intake, while the right sealing plate 8 is the air outlet.

[0023] The rotor fan 6 is located at the connection between the engine 17 and the generator 5. The rotor fan 6 is mounted on the rotor shaft of the generator 5. When the engine 17 drives the rotor shaft of the generator 5 to rotate, the rotor fan 6 rotates synchronously.

[0024] The mechanical fan 10 rotates coaxially with the water turbine pump 18 of the engine 17 via an adapter block 19. The mechanical fan 10 is fixed to the adapter block 19 by several M8*16 bolts.

[0025] The electric fan 11 and the heat sink 12 (which can be a water tank) are fixed to the left and right sides of the heat sink mounting plate 16 of the chassis using several M8*30 bolts; the mechanical fan cover 9 is fixed to the heat sink 12 using several M8*16 bolts, and the mechanical fan cover 9 covers the mechanical fan 10.

[0026] Figure 1A schematic diagram of the heat dissipation and noise reduction structure of a dual-fuel silent generator set shows the airflow direction inside and outside the generator set and the implementation method of the heat dissipation system;

[0027] External air enters the enclosure through the grid holes of the left sealing plate 4 and the chassis 7. The internal air is driven by the mechanical fan 10 and the electric fan 11, passes through the radiator assembly, and is discharged outside the enclosure through the right sealing plate 8. During the rotation of the generator rotor fan 6, the external air entering from the left sealing plate 4 cools the inside of the generator and is then discharged to the sides of the rotor fan 6.

[0028] Specifically, the generator rear end cover 15 is provided with mesh. When the engine 17 drives the generator rotor fan 6 to rotate, air enters the motor through the generator rear end cover 15 and diffuses around the rotor fan 6 to cool the motor. At the same time, when the engine 17 is running, the water turbine pump 18 drives the mechanical fan 10 to blow air from the housing towards the radiator 12 and then discharges it outside the housing through the right sealing plate 8 (e.g., Figure 2 As shown in the figure, when the control panel detects that the engine water temperature is greater than 85 degrees Celsius, the electronic fan 11 turns on, and when the water temperature is lower than 65 degrees Celsius, the electronic fan 11 turns off, thereby meeting the overall heat dissipation requirements of the unit.

[0029] The front panel of the enclosure is equipped with a control panel system 26, a load plug 28, and a reserved hole 27 for CNG high-pressure conduit.

[0030] Figure 3 This is a front view of a dual-fuel silent generator set. The unit adopts a box-type structure. The interior of the box is covered with sound-absorbing cotton to achieve a sound-absorbing effect, except for the left sealing plate 4, right sealing plate 8, chassis 7, grid-like ventilation openings, CNG high-pressure pipe reserved holes 27, and engine exhaust holes.

[0031] The gas fuel is connected to the internal gas exchange valve 22 of the engine compartment via an external natural gas pipeline or natural gas cylinder through a CNG high-pressure conduit. The gas exchange valve 22 is connected to the pressure reducing valve 21. After passing through the gas exchange valve 22, the natural gas enters the engine air rail 3 through the pressure reducing valve 21 to provide fuel energy to the engine. The pressure reducing valve 21 is equipped with a pressure sensor and uses a water temperature sensor to monitor the temperature of the engine outlet water pipe. The unit uses gasoline fuel for ignition during initial startup. When the engine ECU detects that the engine water temperature, gas pressure, and engine speed have reached a certain value, it automatically switches to gas fuel mode. When any of the engine water temperature, gas pressure, or engine speed is lower than the target value, it automatically switches to gasoline fuel mode.

[0032] Figure 4The rear view shows the internal layout of the dual-fuel silent generator set. The enclosure also includes a muffler 20, a fuel filter 23, a 12V battery 24, and an air filter 25. The pressure reducing valve 21, the air exchange valve 22, the fuel filter 23, and the control panel system 26 at the front of the enclosure are arranged axially. The muffler 20, the 12V battery 24, and the air filter 25 at the rear of the enclosure are arranged axially, making reasonable use of the internal space of the enclosure to make the whole unit more compact.

[0033] The gasoline filter 23 is connected to the fuel tank and the fuel rail of the engine 17 respectively;

[0034] The muffler 20 is connected to the exhaust manifold of the engine 17;

[0035] The positive and negative terminals of the 12V battery 24 are connected to the electric fan 11, the pressure reducing valve 21, the air exchange valve 22, the control panel system 26, and the engine fuel ECU and engine gas ECU, respectively.

[0036] Air filter 25 is connected to the intake manifold and throttle body of engine 17 respectively;

[0037] The engine air rail 3 is connected to the pressure reducing valve 21 and the engine cylinder head, respectively.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A heat dissipation structure for a high-power dual-fuel silent generator set, characterized in that: The enclosure includes a housing and a rotor fan (6), a fuel tank tray (13), a radiator mounting plate (16), an engine (17), a generator (5), a mechanical fan (10), and a radiator (12) disposed inside the housing. An engine cover (1) is installed in the gap between the upper door (2) of the housing and the engine (17). The fuel tank tray (13) and the radiator mounting plate (16) are fixed on the left and right sides of the engine cover (1), respectively. The housing has a left sealing plate (4), a right sealing plate (8), and an engine (17). The chassis (7) directly below is provided with a grid mesh. The rotor fan (6) is located at the connection between the engine (17) and the generator (5). The rotor fan (6) is installed on the rotor shaft of the generator (5). The generator rear end cover (15) of the engine (17) is provided with a mesh. The mechanical fan (10) rotates coaxially with the water turbine pump (18) of the engine (17) through the adapter block (19). The electronic fan (11) and the radiator (12) are respectively fixed on the left and right sides of the chassis radiator mounting plate (16).

2. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The engine cover (1) is located on the front and rear sides of the housing, respectively, at the upper front crossbeam and the upper rear crossbeam.

3. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 2, characterized in that: The inside of the housing and the bottom of the engine cover (1) are both lined with sound-absorbing cotton.

4. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The left sealing plate (4) is equipped with air guide grooves (14) at the grid mesh.

5. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The radiator (12) is a water tank.

6. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 5, characterized in that: A mechanical fan cover (9) is fixed on the radiator (12), and the mechanical fan cover (9) covers the mechanical fan (10).

7. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The heat dissipation structure of the high-power dual-fuel silent generator set also includes an air exchange valve (22) and a pressure reducing valve (21); the air exchange valve (22) is connected to the pressure reducing valve (21), the pressure reducing valve (21) is connected to the engine air rail (3) of the engine (17), and the pressure reducing valve (21) is equipped with a pressure sensor and uses a water temperature sensor to monitor the temperature of the engine outlet water pipe.

8. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The front panel of the enclosure is equipped with a control panel system (26) and a load plug (28).

9. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The front panel of the enclosure has a reserved hole (27) for a CNG high-pressure conduit.

10. The heat dissipation structure of a high-power dual-fuel silent generator set according to claim 1, characterized in that: The enclosure is also equipped with a muffler (20), a gasoline filter (23), a 12V battery (24), and an air filter (25); the pressure reducing valve (21), the air exchange valve (22), the gasoline filter (23), and the control panel system (26) at the front of the enclosure are arranged axially; the muffler (20) at the rear of the enclosure is arranged axially with the 12V battery (24) and the air filter (25).

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