Energy-saving diesel generating set with energy recovery device

Abstract

The invention discloses an energy-saving diesel generating set with an energy recovery device, and relates to the technical field of diesel generating equipment.The diesel generating set comprises a rack, a controller, an oil tank, an alternating-current generator, an engine unit and a waste heat mechanism, the engine unit comprises an engine body and a main shaft, and the waste heat mechanism comprises a heat exchanger and a water tank; the controller, the oil tank, the alternating-current generator, the engine body and the water tank are fixedly connected with the rack, the main shaft is rotationally connected with the alternating-current generator, the heat exchanger is fixedly connected with the engine body, and the alternating-current generator, the engine unit and the waste heat mechanism are connected with the controller through electric signals. Kinetic energy and waste heat of high-temperature waste gas generated by diesel combustion are recycled, the waste gas kinetic energy is used for increasing the engine gas inlet pressure, the diesel combustion efficiency is improved, waste gas is used for preheating domestic water, the economic efficiency of a diesel generating set is improved, active adjustment is conducted in the low-speed stage of the engine, and the waste gas kinetic energy utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diesel generating equipment, in particular to an energy-saving diesel generating set with an energy recovery device. BACKGROUND

[0002] The diesel generating set is a complete set of devices for converting the chemical energy of diesel into electric energy. The core technical principle is based on the electromechanical integration coupling of the diesel engine and the synchronous alternator. The diesel undergoes compression ignition combustion in the engine cylinder, converting chemical energy into mechanical energy of piston reciprocating motion. The engine drives the generator rotor to rotate through the shaft system, cutting the magnetic induction lines, and converting mechanical energy into electric energy output based on the electromagnetic induction law.

[0003] The core advantage of the diesel generating set lies in its high reliability, excellent load adaptability, good fuel economy and convenient mobility. The main problem of the existing diesel generating set is that the diesel engine has insufficient combustion efficiency of diesel and insufficient energy utilization efficiency of exhaust gas, resulting in low efficiency of energy use. SUMMARY

[0004] The purpose of the present application is to provide an energy-saving diesel generating set with an energy recovery device to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an energy-saving diesel generating set with an energy recovery device includes a rack, a controller, an oil tank, an alternator, an engine set and a waste heat mechanism. The engine set includes an engine body and a main shaft. The waste heat mechanism includes a heat exchanger and a water tank. The controller, the oil tank, the alternator, the engine body and the water tank are fixedly connected with the rack. The main shaft is rotatably connected with the alternator. The heat exchanger is fixedly connected with the engine body. The alternator, the engine set and the waste heat mechanism are connected with the controller through electric signals.

[0006] The present application is a diesel generating set that can recover waste heat. The oil tank provides diesel to the engine set. The diesel burns in the engine cylinder to produce high-temperature and high-pressure gas, which pushes the internal piston to work. The piston drives the crankshaft to rotate around its axis, converting chemical energy into mechanical energy. The crankshaft transmits torque to the main shaft of the engine set, and the main shaft transmits torque to the alternator. The main shaft drives the alternator rotor to rotate, cutting the stator magnetic induction lines. According to the electromagnetic induction law, mechanical energy is converted into electric energy. The high-temperature and high-pressure gas produced by diesel combustion completes heat exchange with cold water in the water tank through the heat exchanger, heating the water with waste heat, realizing cogeneration energy recovery. According to the combustion condition of diesel, the controller actively feeds back electric control signals to the engine set, adjusts the intake pressure of the engine set through the kinetic energy of exhaust gas, makes the diesel burn more fully in the engine set, increases the output power, further recovers energy and improves economic efficiency.

[0007] Further, the engine set further comprises an exhaust pipe, a supercharging mechanism, an intercooler and an oil nozzle, the exhaust pipe, the intercooler and the oil nozzle are fixedly connected with the engine body, and the supercharging mechanism, the intercooler and the oil nozzle are connected with the controller through electrical signals.

[0008] The diesel is combusted in the cylinder of the engine body to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas completes heat exchange with the cold water in the water tank through the heat exchanger, the water is heated by the waste heat, and then is discharged to the supercharging mechanism through the exhaust pipe, the supercharging mechanism is driven by the waste gas kinetic energy, the external atmosphere is pressurized by the supercharging mechanism, and then is input into the engine body through the intercooler, the intake pressure of the supercharging mechanism to the engine set is increased, according to the oil injection timing of the oil nozzle, that is, the oil injection time and the oil injection pressure matched with the piston stroke, the supercharging mechanism actively adjusts the blade opening degree, the intake pressure of the engine set is matched with the engine set speed load, and the diesel is combusted more fully in the engine set.

[0009] Further, the engine set further comprises an exhaust pipe, a supercharging mechanism, an intercooler and an oil nozzle, the exhaust pipe, the intercooler and the oil nozzle are fixedly connected with the engine body, and the supercharging mechanism, the intercooler and the oil nozzle are connected with the controller through electrical signals.

[0010] The water is heated by the waste heat, the gas is discharged to the front shell through the exhaust pipe and the smoke inlet, the supercharging mechanism is driven by the waste gas kinetic energy, the external atmosphere is pressurized by the supercharging mechanism, and then is input into the intercooler through the exhaust port and the air inlet pipe, the gas pressure of the pressurized atmosphere is increased, the internal energy of the gas is increased, the temperature is increased, the temperature-increasing gas is input into the engine body after being cooled by the intercooler, and the diesel is prevented from being detonated with the temperature-increasing gas to cause the engine body to be exploded.

[0011] Further, the supercharging mechanism further comprises an assembly seat and a rotating shaft, the front shell and the rear shell are fixedly connected with the assembly seat, the assembly seat is provided with a middle shaft hole, the rotating shaft is rotatably connected with the middle shaft hole, the front shell is further provided with a smoke outlet, the smoke inlet is arranged on the side wall of the front shell, the smoke outlet is arranged on the side of the front shell away from the rear shell, the rear shell is provided with an air inlet, the air inlet is arranged on the side wall of the rear shell, and the exhaust port is arranged on the side of the rear shell away from the front shell.

[0012] The water is heated by the waste heat, the gas is discharged to the front shell through the exhaust pipe and the smoke inlet, the supercharging mechanism is driven by the waste gas kinetic energy, and then is discharged through the smoke outlet, the rear turbine is driven to rotate around the axis by the rotating shaft, the external atmosphere is drawn into the rear shell through the air inlet after being pressurized by the rear turbine, and then is input into the intercooler through the exhaust port and the air inlet pipe.

[0013] Further, the supercharging mechanism further comprises a rear turbine and a turbofan mechanism, the turbofan mechanism comprises a sleeve, the rotating shaft is fixedly connected with the rear turbine and the sleeve, the turbofan mechanism is arranged at one end of the rotating shaft close to the exhaust port, the rear turbine is arranged at one end of the rotating shaft close to the exhaust port, and the turbofan mechanism is connected with the controller through an electrical signal.

[0014] The gas is discharged to the front shell through the smoke inlet, is driven by the kinetic energy of the exhaust gas to pass through the smoke outlet, the turbofan mechanism drives the rear turbine to rotate around the axis through the rotating shaft, the rotation of the rear turbine draws the external atmosphere into the rear shell through the air inlet to increase the pressure, and then the gas is discharged from the exhaust port, according to the injection timing of the oil nozzle, that is, the injection time and injection pressure of the piston stroke, the turbofan mechanism actively adjusts the opening degree of the blade, so that the intake pressure of the engine group matches the speed load of the engine group, and the diesel is more fully combusted in the engine group.

[0015] Further, the turbofan mechanism further comprises a fan blade, a gear rod and a rack, the sleeve is provided with a side hole, the side hole, the fan blade, the gear rod and the rack are provided with a plurality of groups, the plurality of groups of the side hole, the fan blade, the gear rod and the rack are uniformly distributed along the circumference of the sleeve, the fan blade is fixedly connected with the gear rod, the gear rod is rotatably connected with the side hole, and the gear rod is in mesh with the rack.

[0016] When the engine body is in a low-speed stage, the amount of exhaust gas discharged is small, the kinetic energy of the fan blade is insufficient, the turbofan mechanism has speed lag, the amount of gas sucked into the rear turbine is insufficient, the high-pressure intake air cannot be provided to the engine body, the gear rod is made to rotate around the axis in the side hole through the meshing of the tooth surfaces between the rack and the gear rod, the gear rod is fixedly assembled with the fan blade, the opening degree of the fan blade is actively adjusted, the contact area between the fan blade and the exhaust gas discharged from the smoke inlet is increased, and in the low-speed stage of the engine body, the exhaust gas fully contacts the fan blade, the intake pressure of the engine body is increased, and the combustion efficiency of diesel is improved.

[0017] Further, the turbofan mechanism further comprises a servo cylinder and a ring disc, the servo cylinder is fixedly connected with the sleeve, the ring disc is fixedly connected with the output end of the servo cylinder and the rack, the ring disc is slidably connected with the sleeve, and the servo cylinder is connected with the controller through an electrical signal.

[0018] The controller sends an electrical control signal to the servo cylinder, the output end of the servo cylinder pushes the ring disc to displace along the sleeve, the ring disc is fixedly assembled with the rack, the rack is displaced along the axis of the sleeve, the gear rod is made to rotate around the axis in the side hole through the meshing of the tooth surfaces between the rack and the gear rod, the gear rod is fixedly assembled with the fan blade, and the opening degree of the fan blade is actively adjusted.

[0019] Further, the waste heat mechanism further comprises a water pipe and a water pump, the water pipe is fixedly connected with the heat exchanger and the water tank, the water pump is fixedly connected with the water tank, and the water pump is connected with the controller through an electrical signal.

[0020] The controller sends an electric control signal to the water pump, the water pump draws the cold water in the water tank into the heat exchanger through the water pipe, the high-temperature and high-pressure gas burned by diesel oil is returned to the water tank after completing heat exchange with the cold water in the water tank through the heat exchanger, the waste gas waste heat is used to heat the water, and the cogeneration energy recovery is realized.

[0021] Compared with the prior art, the beneficial effects of the present application are: the present application designs a supercharging mechanism, which cooperates with the turbofan mechanism, drives the turbofan mechanism through the kinetic energy of the exhaust gas, and then discharges through the exhaust port, the turbofan mechanism drives the rear turbine to rotate around its axis through the rotating shaft, the rear turbine rotates to draw the external atmosphere into the rear shell through the air inlet, pressurizes the atmosphere, and then inputs the engine body after cooling in the intercooler through the exhaust port and the air inlet pipe; according to the injection timing of the oil nozzle, that is, the injection time, injection pressure and combustion condition of diesel oil cooperating with the piston stroke, the controller sends an electric control signal to the servo cylinder, the output end of the servo cylinder pushes the rack to displace along the sleeve axis, the tooth surface of the rack and the gear rod is engaged, the gear rod rotates around its axis in the side hole, and the fan blade opening is actively adjusted; in the low-speed stage of the engine body, the exhaust gas fully contacts the fan blade, the intake pressure of the engine body is increased, the diesel oil is more fully combusted in the engine set, the output power is increased, the energy is further recovered, and the economic efficiency is improved; the present application designs a waste heat mechanism, the high-temperature and high-pressure gas burned by diesel oil is used, the water pump draws the cold water in the water tank into the heat exchanger through the water pipe, the high-temperature and high-pressure gas burned by diesel oil is returned to the water tank after completing heat exchange with the cold water in the water tank through the heat exchanger, the waste gas waste heat is used to heat the water, and the cogeneration energy recovery is realized; the present application recovers the kinetic energy and waste heat of the high-temperature exhaust gas generated by diesel oil combustion, increases the intake pressure of the engine by using the kinetic energy of the exhaust gas, improves the diesel oil combustion efficiency, preheats and heats the domestic water by using the exhaust gas, improves the economic efficiency of the diesel generator set, actively adjusts in the low-speed stage of the engine, and improves the utilization rate of the kinetic energy of the exhaust gas. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a general structure schematic diagram of the present application; Figure 2 It is a general structure isometric schematic diagram of the present application; Figure 3 It is an engine set structure schematic diagram of the present application; Figure 4 It is an engine set isometric schematic diagram of the present application; Figure 5 It is a supercharging mechanism structure schematic diagram of the present application; Figure 6 It is a supercharging mechanism partial sectional view of the present application; Figure 7 It is a partial A enlarged schematic diagram of the present application; Figure 6 Figure 8 It is a waste heat mechanism structure schematic diagram of the present application. ​

[0023] Figure: 1, rack; 2, controller; 3, oil tank; 4, alternator; 5, engine set; 51, engine body; 52, main shaft; 53, exhaust pipe; 54, supercharger; 541, front housing; 5411, smoke inlet; 5412, smoke outlet; 542, rear housing; 5421, air inlet; 5422, air outlet; 543, assembly seat; 5431, central shaft hole; 544, rotating shaft; 545, rear turbine; 546, turbofan mechanism; 5461, sleeve; 54611, side hole; 5462, fan blade; 5463, gear rod; 5464, servo cylinder; 5465, ring disc; 5466, rack; 55, air inlet pipe; 56, intercooler; 57, fuel injector; 6, waste heat mechanism; 61, heat exchanger; 62, water pipe; 63, water tank; 64, water pump. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] As shown in Figure 1 , Figure 2 The present application provides a technical solution of an energy-saving diesel generator set with an energy recovery device, which includes a rack 1, a controller 2, an oil tank 3, an alternator 4, an engine set 5, and a waste heat mechanism 6. The engine set 5 includes an engine body 51 and a main shaft 52, and the waste heat mechanism 6 includes a heat exchanger 61 and a water tank 63. The controller 2, the oil tank 3, the alternator 4, the engine body 51, and the water tank 63 are fixedly connected with the rack 1. The main shaft 52 is rotationally connected with the alternator 4. The heat exchanger 61 is fixedly connected with the engine body 51. The alternator 4, the engine set 5, and the waste heat mechanism 6 are connected with the controller 2 through electrical signals.

[0026] The application discloses a diesel power generation set capable of recycling waste gas waste heat, diesel oil is provided to an engine set 5 through an oil tank 3, the diesel oil is combusted in a cylinder of the engine set 5 to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas drives an internal piston to work, the piston drives a crankshaft to rotate around an axis, and chemical energy is converted into mechanical energy; the crankshaft transmits torque to a main shaft 52 of the engine set 5, the main shaft 52 transmits torque to an alternating current generator 4, the main shaft 52 drives a rotor of the alternating current generator 4 to rotate, a magnetic induction line of a stator is cut, mechanical energy is converted into electric energy according to the electromagnetic induction law, the high-temperature and high-pressure gas generated by combustion of the diesel oil is subjected to heat exchange with cold water in a water tank 63 through a heat exchanger 61, waste gas waste heat is used to heat water, and heat and power cogeneration energy recycling is realized; according to the combustion condition of the diesel oil, a controller 2 actively feeds back an electric control signal to the engine set 5, the air inlet pressure of the engine set 5 is adjusted through waste gas kinetic energy, the diesel oil is combusted more fully in the engine set 5, the output power is increased, energy is further recycled, and economic efficiency is improved.

[0027] As shown in Figure 3 , Figure 4 , the engine set 5 further comprises an exhaust pipe 53, a supercharging mechanism 54, an intercooler 56 and an oil nozzle 57, the exhaust pipe 53, the intercooler 56 and the oil nozzle 57 are fixedly connected with an engine body 51, and the supercharging mechanism 54, the intercooler 56 and the oil nozzle 57 are connected with the controller 2 through electric signals.

[0028] The diesel oil is combusted in the cylinder of the engine body 51 to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas is subjected to heat exchange with the cold water in the water tank 63 through the heat exchanger 61, after the waste gas waste heat is used to heat the water, the high-temperature and high-pressure gas is discharged to the supercharging mechanism 54 through the exhaust pipe 53, the supercharging mechanism 54 is driven by waste gas kinetic energy, the supercharging mechanism 54 inputs the engine body 51 after the external atmosphere is pressurized and cooled by the intercooler 56, the air inlet pressure of the engine set 5 is increased by the supercharging mechanism 54, the supercharging mechanism 54 actively adjusts the blade opening degree according to the oil injection timing of the oil nozzle 57, that is, the oil injection time and the oil injection pressure matched with the piston stroke, the air inlet pressure of the engine set 5 is matched with the rotating speed and load of the engine set 5, and the diesel oil is combusted more fully in the engine set 5.

[0029] As shown in Figure 4 , Figure 5 , the engine set 5 further comprises an air inlet pipe 55, the supercharging mechanism 54 comprises a front shell 541 and a rear shell 542, the front shell 541 is provided with a smoke inlet 5411, the rear shell 542 is provided with an exhaust port 5422, the smoke inlet 5411 is fixedly connected with the exhaust pipe 53, and the air inlet pipe 55 is fixedly connected with the exhaust port 5422 and the intercooler 56.

[0030] The exhaust gas heats the water, and then the gas is discharged to the front shell 541 through the exhaust pipe 53 and the smoke inlet 5411, and the exhaust gas kinetic energy drives the supercharging mechanism 54, the supercharging mechanism 54 pressurizes the external atmosphere, and then the pressurized atmosphere is input into the intercooler 56 through the exhaust port 5422 and the air inlet pipe 55. The pressurized atmosphere itself has increased pressure and internal energy, and the temperature of the gas itself is increased. The heated gas is input into the engine body 51 through the intercooler 56, so as to avoid the explosion of the diesel and the heated gas, which causes the explosion of the engine body 51.

[0031] As shown in Figure 5 , the supercharging mechanism 54 further includes an assembly seat 543 and a rotating shaft 544, the front shell 541 and the rear shell 542 are fixedly connected with the assembly seat 543, the assembly seat 543 is provided with a middle shaft hole 5431, the rotating shaft 544 is rotatably connected with the middle shaft hole 5431, the front shell 541 is further provided with a smoke outlet 5412, the smoke inlet 5411 is arranged on the side wall of the front shell 541, the smoke outlet 5412 is arranged on the side of the front shell 541 away from the rear shell 542, the rear shell 542 is provided with an air inlet 5421, the air inlet 5421 is arranged on the side wall of the rear shell 542, and the exhaust port 5422 is arranged on the side of the rear shell 542 away from the front shell 541.

[0032] The exhaust gas heats the water, and then the gas is discharged to the front shell 541 through the exhaust pipe 53 and the smoke inlet 5411, and the exhaust gas kinetic energy drives the supercharging mechanism 54, the supercharging mechanism 54 pressurizes the external atmosphere, and then the pressurized atmosphere is input into the intercooler 56 through the exhaust port 5422 and the air inlet pipe 55. The pressurized atmosphere itself has increased pressure and internal energy, and the temperature of the gas itself is increased. The heated gas is input into the engine body 51 through the intercooler 56, so as to avoid the explosion of the diesel and the heated gas, which causes the explosion of the engine body 51.

[0033] As shown in Figure 5 , Figure 6 , the supercharging mechanism 54 further includes a rear turbine 545 and a turbofan mechanism 546, the turbofan mechanism 546 includes a sleeve 5461, the rotating shaft 544 is fixedly connected with the rear turbine 545 and the sleeve 5461, the turbofan mechanism 546 is arranged on the end of the rotating shaft 544 close to the smoke outlet 5412, the rear turbine 545 is arranged on the end of the rotating shaft 544 close to the exhaust port 5422, and the turbofan mechanism 546 is connected with the controller 2 through an electrical signal.

[0034] The gas is discharged to the front shell 541 through the smoke inlet 5411, and is discharged through the smoke outlet 5412 after being driven by the waste gas kinetic energy. The turbine mechanism 546 drives the rear turbine 545 to rotate around its axis through the rotating shaft 544. The rear turbine 545 rotates to draw external air into the rear shell 542 through the air inlet 5421, pressurizes the air, and discharges the air through the air outlet 5422. According to the injection timing of the oil nozzle 57, that is, the injection time and injection pressure matching the piston stroke, the turbine mechanism 546 actively adjusts the blade opening degree, so that the intake pressure of the engine set 5 matches the speed load of the engine set 5, and the diesel is burned more fully in the engine set 5.

[0035] As shown in Figure 6 、 Figure 7 , the turbine mechanism 546 further includes a fan blade 5462, a gear rod 5463, and a rack 5466. The sleeve 5461 is provided with a side hole 54611. The side hole 54611, the fan blade 5462, the gear rod 5463, and the rack 5466 are provided with a plurality of groups. The plurality of groups of side holes 54611, fan blades 5462, gear rods 5463, and racks 5466 are uniformly distributed along the circumference of the sleeve 5461. The fan blade 5462 is fixedly connected with the gear rod 5463. The gear rod 5463 is rotatably connected with the side hole 54611. The gear rod 5463 is in mesh with the tooth surface of the rack 5466.

[0036] When the engine body 51 is in the low-speed stage, the amount of discharged waste gas is small, the kinetic energy of the fan blade 5462 is insufficient, the turbine mechanism 546 has speed lag, the amount of gas sucked into the rear turbine 545 is insufficient, and the high-pressure intake air cannot be provided to the engine body 51. Through the meshing of the tooth surface between the rack 5466 and the gear rod 5463, the gear rod 5463 rotates around its axis in the side hole 54611. The gear rod 5463 is fixedly connected with the fan blade 5462. The gear rod 5463 actively adjusts the opening degree of the fan blade 5462. The contact area between the fan blade 5462 and the exhaust gas discharged through the smoke inlet 5411 is increased. In the low-speed stage of the engine body 51, the exhaust gas fully contacts the fan blade 5462, the intake pressure of the engine body 51 is increased, and the combustion efficiency of diesel is improved.

[0037] As shown in Figure 7 , the turbine mechanism 546 further includes a servo cylinder 5464 and a ring disc 5465. The servo cylinder 5464 is fixedly connected with the sleeve 5461. The ring disc 5465 is fixedly connected with the output end of the servo cylinder 5464 and the rack 5466. The ring disc 5465 is slidably connected with the sleeve 5461. The servo cylinder 5464 is connected with the controller 2 through electrical signals.

[0038] The controller 2 sends an electric control signal to the servo cylinder 5464, the output end of the servo cylinder 5464 pushes the ring disc 5465 to displace along the sleeve 5461, the ring disc 5465 is fixedly assembled with the rack 5466, the rack 5466 displaces along the axis of the sleeve 5461, through the meshing of the tooth surfaces between the rack 5466 and the gear rod 5463, the gear rod 5463 rotates around its axis in the side hole 54611, the gear rod 5463 is fixedly assembled with the fan blade 5462, and the opening of the fan blade 5462 is actively adjusted.

[0039] As shown in Figure 2 , Figure 8 The waste heat mechanism 6 further comprises a water pipe 62 and a water pump 64, the water pipe 62 is fixedly connected with the heat exchanger 61 and the water tank 63, the water pump 64 is fixedly connected with the water tank 63, and the water pump 64 is connected with the controller 2 through an electric signal.

[0040] The controller 2 sends an electric control signal to the water pump 64, the water pump 64 draws the cold water in the water tank 63 into the heat exchanger 61 through the water pipe 62, and the high-temperature and high-pressure gas burned by diesel is returned to the water tank 63 after completing heat exchange with the cold water in the water tank 63 through the heat exchanger 61, so that the waste heat of the exhaust gas is used to heat the water, and the combined heat and power energy recovery is realized.

[0041] The working principle of the present application: the oil tank 3 provides diesel to the engine set 5, the diesel burns to generate high-temperature and high-pressure gas, which pushes the internal piston to work, the piston drives the crankshaft to rotate around its axis, converts chemical energy into mechanical energy, the crankshaft transmits torque to the main shaft 52 of the engine set 5, the main shaft 52 transmits torque to the alternator 4, the main shaft 52 drives the rotor of the alternator 4 to rotate, cuts the magnetic induction line of the stator, according to the law of electromagnetic induction, converts mechanical energy into electrical energy, the high-temperature and high-pressure gas completes heat exchange with the cold water in the water tank 63 through the heat exchanger 61, uses the waste heat to heat the water, realizes cogeneration energy recovery, after the waste heat heats the water, the gas is discharged to the front shell 541 through the exhaust pipe 53, the smoke inlet 5411, drives the turbofan mechanism 546 through the exhaust gas kinetic energy, and is discharged through the smoke outlet 5412, the turbofan mechanism 546 drives the rear turbine 545 to rotate around its axis through the rotating shaft 544, the rear turbine 545 rotates to suck the external atmosphere into the rear shell 542 through the air inlet 5421 to increase the pressure, and then input into the engine body 51 through the exhaust port 5422, the air inlet pipe 55, the intercooler 56 and the oil nozzle 57, according to the injection timing of the oil nozzle 57, that is, the injection time, injection pressure and combustion of diesel oil are matched with the piston stroke, the controller 2 sends an electric control signal to the servo cylinder 5464, the output end of the servo cylinder 5464 pushes the rack 5466 to displace along the axis of the sleeve 5461, the rack 5466 and the gear rod 5463 are meshed through the tooth surface, the gear rod 5463 rotates around its axis in the side hole 54611, the opening of the fan blade 5462 is actively adjusted, in the low-speed stage of the engine body 51, the exhaust gas fully contacts the fan blade 5462, the intake pressure of the engine body 51 is increased, the diesel oil is burned more fully in the engine set 5, the output power is increased, the energy is further recovered, and the economic efficiency is improved.

[0042] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An energy-saving diesel generator set with an energy recovery device, characterized by: The generator set comprises a rack (1), a controller (2), an oil tank (3), an alternator (4), an engine set (5) and a waste heat mechanism (6), the engine set (5) comprises an engine body (51) and a main shaft (52), the waste heat mechanism (6) comprises a heat exchanger (61) and a water tank (63), the controller (2), the oil tank (3), the alternator (4), the engine body (51) and the water tank (63) are fixedly connected with the rack (1), the main shaft (52) is rotatably connected with the alternator (4), the heat exchanger (61) is fixedly connected with the engine body (51), and the alternator (4), the engine set (5) and the waste heat mechanism (6) are connected with the controller (2) through electric signals.

2. The energy-saving diesel generator set with energy recovery device according to claim 1, characterized in that: The engine set (5) further comprises an exhaust pipe (53), a supercharging mechanism (54), an intercooler (56) and an oil nozzle (57), the exhaust pipe (53), the intercooler (56) and the oil nozzle (57) are fixedly connected with the engine body (51), and the supercharging mechanism (54), the intercooler (56) and the oil nozzle (57) are connected with the controller (2) through electric signals.

3. The energy-saving diesel generating set with energy recovery device according to claim 2, characterized in that: The engine set (5) further comprises an air inlet pipe (55), the supercharging mechanism (54) comprises a front shell (541) and a rear shell (542), the front shell (541) is provided with a smoke inlet (5411), the rear shell (542) is provided with an exhaust port (5422), the smoke inlet (5411) is fixedly connected with the exhaust pipe (53), and the air inlet pipe (55) is fixedly connected with the exhaust port (5422) and the intercooler (56).

4. The energy-saving diesel generating set with energy recovery device according to claim 3, characterized in that: The supercharging mechanism (54) further comprises an assembly seat (543) and a rotating shaft (544), the front shell (541) and the rear shell (542) are fixedly connected with the assembly seat (543), the assembly seat (543) is provided with a middle shaft hole (5431), the rotating shaft (544) is rotatably connected with the middle shaft hole (5431), the front shell (541) is further provided with a smoke outlet (5412), the smoke inlet (5411) is arranged on the side wall of the front shell (541), the smoke outlet (5412) is arranged on the side of the front shell (541) away from the rear shell (542), the rear shell (542) is provided with an air inlet (5421), the air inlet (5421) is arranged on the side wall of the rear shell (542), and the exhaust port (5422) is arranged on the side of the rear shell (542) away from the front shell (541).

5. The energy-saving diesel generating set with energy recovery device according to claim 4, characterized in that: The supercharging mechanism (54) further comprises a rear turbine (545) and a turbofan mechanism (546), the turbofan mechanism (546) comprises a sleeve (5461), the rotating shaft (544) is fixedly connected with the rear turbine (545) and the sleeve (5461), the turbofan mechanism (546) is arranged at one end of the rotating shaft (544) close to the smoke outlet (5412), the rear turbine (545) is arranged at one end of the rotating shaft (544) close to the exhaust port (5422), and the turbofan mechanism (546) is connected with the controller (2) through electric signals.

6. The energy-saving diesel generating set with energy recovery device according to claim 5, characterized in that: The turbo-fan mechanism (546) further comprises a fan blade (5462), a gear rod (5463) and a rack (5466), the sleeve (5461) is provided with a side hole (54611), the side hole (54611), the fan blade (5462), the gear rod (5463) and the rack (5466) are provided with a plurality of groups, the plurality of groups of the side hole (54611), the fan blade (5462), the gear rod (5463) and the rack (5466) are uniformly distributed along the circumference of the sleeve (5461), the fan blade (5462) is fixedly connected with the gear rod (5463), the gear rod (5463) is rotatably connected with the side hole (54611), and the gear rod (5463) is in mesh with the tooth surface of the rack (5466).

7. The energy-saving diesel generating set with energy recovery device according to claim 6, characterized in that: The turbo-fan mechanism (546) further comprises a servo cylinder (5464) and a ring disc (5465), the servo cylinder (5464) is fixedly connected with the sleeve (5461), the ring disc (5465) is fixedly connected with the output end of the servo cylinder (5464) and the rack (5466), the ring disc (5465) is slidably connected with the sleeve (5461), and the servo cylinder (5464) is connected with the controller (2) through an electric signal.

8. The energy-saving diesel generating set with energy recovery device according to claim 1, characterized in that: The waste heat mechanism (6) further comprises a water pipe (62) and a water pump (64), the water pipe (62) is fixedly connected with the heat exchanger (61) and the water tank (63), the water pump (64) is fixedly connected with the water tank (63), and the water pump (64) is connected with the controller (2) through an electric signal.

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