A turbocharged diesel generator set

Abstract

The present invention discloses a turbocharged diesel generator set, comprising a diesel engine, a turbocharger, and a generator; the turbocharger comprises a turbine, a compressor, and a connecting device; the connecting device comprises a pump wheel, a driven impeller, and a sealed housing; the pump wheel is connected to the turbine blades, the driven impeller is connected to the compressor impeller, the pump wheel and the driven impeller are arranged opposite each other in the same sealed housing, and the sealed housing is filled with transmission fluid; the pump wheel rotates synchronously with the turbine blades, causing the transmission fluid to form a vortex, and the pump wheel drives the driven impeller and the compressor impeller to rotate through the transmission fluid. The present invention enables the speed of the compressor impeller to increase smoothly, avoiding the impact on the diesel engine and generator caused by the speed jump when the turbine is turned on, thereby extending the service life of the diesel engine and generator, and improving the stability of the generator set output voltage.

Description

Technical Field

[0001] The present application relates to the technical field of diesel generators, and in particular to a turbocharged diesel generator set. Background Art

[0002] In existing technology, turbochargers are used to increase the power output of diesel generators while controlling their size. These turbochargers compress more air into the diesel engine, thereby increasing the engine's power. Because turbochargers operate at high speeds, they only activate when the diesel engine's speed reaches a certain level. When the turbocharger activates, the diesel engine's output torque and speed increase instantaneously, significantly impacting the generator connected to the diesel engine. This not only shortens the generator's lifespan but also causes output voltage fluctuations. Summary of the Invention

[0003] In view of the above problems, the present application provides a turbocharged diesel generator set to solve the technical problem of instantaneous increase in diesel engine torque when the turbocharger is started.

[0004] To achieve the above object, the inventor provides a turbocharged diesel generator set, comprising a diesel engine, a turbocharger and a generator;

[0005] The diesel engine is used to drive the generator to generate electricity, and the turbocharger is used to increase the intake pressure of the diesel engine;

[0006] The turbocharger includes a turbine, a compressor, and a connecting device; the turbine is connected to the exhaust pipe of the diesel engine, the compressor is connected to the intake pipe of the diesel engine, and the connecting device is used to drive the connection between the turbine and the compressor;

[0007] The turbine includes a casing, turbine blades and an intake valve, the compressor includes a compressor impeller, and the connecting device includes a pump wheel, a driven impeller and a sealing housing;

[0008] The turbine blades are rotatably disposed in the housing via a first rotating shaft, and the compressor impeller is rotatably disposed in the compressor via a second rotating shaft; the pump impeller is connected to the first rotating shaft, and the driven impeller is connected to the second rotating shaft. The pump impeller and the driven impeller are disposed opposite each other in the same sealed housing, and the sealed housing is filled with transmission fluid;

[0009] The pump wheel rotates synchronously with the turbine blades, causing the transmission fluid to form a vortex, and the pump wheel drives the driven impeller and the compressor impeller to rotate through the transmission fluid.

[0010] In some technical solutions, the system further includes a first driver, which drives the intake valve to open and close via a first push rod;

[0011] The first driver is a proportional electric push rod, which is used to control the intake valve to open proportionally and gradually so that the rotation speed of the turbine blades increases smoothly.

[0012] In some technical solutions, the system further includes a second driver, a second push rod, and a shift fork, wherein the second driver is connected to the shift fork via the second push rod;

[0013] The pump wheel is movably sleeved on the first rotating shaft through a spline, an outer sleeve is provided on the side of the pump wheel close to the driven impeller, and an inner plug shaft adapted to the outer sleeve is provided on the outer side of the driven impeller;

[0014] When the speed difference between the pump wheel and the driven impeller is less than a preset value, the second driver drives the pump wheel to move toward the driven impeller through the shift fork, so that the inner plug-in shaft is inserted into the outer sleeve, thereby realizing a rigid connection between the first rotating shaft and the second rotating shaft.

[0015] In some technical solutions, the first rotating shaft and the second rotating shaft are provided with a plurality of support bearings.

[0016] In some technical solutions, the support bearing is a full floating bearing.

[0017] In some technical solutions, an intercooler is further included, and the air outlet of the compressor is connected to the air intake pipe through the intercooler.

[0018] In some technical solutions, a fan is provided at the front end of the diesel engine, and the intercooler is located on the air outlet side of the fan.

[0019] In some technical solutions, the rated speed of the diesel engine is greater than or equal to 3000 rpm, and the output power is less than or equal to 18KW.

[0020] In some technical solutions, the generator and the diesel engine are fixedly connected by bolts.

[0021] In some technical solutions, the turbocharger is arranged on the upper side of the diesel engine.

[0022] Different from the existing technology, the turbocharged diesel generator set in the above technical solution includes a diesel engine, a turbocharger and a generator, wherein the turbocharger is used to increase the intake pressure of the diesel engine, thereby increasing the output power of the diesel engine. In this technical solution, a connecting device is added for dynamically connecting the turbine and the compressor, wherein the connecting device includes a pump wheel, a driven impeller and a sealed housing; the turbine blades are rotatably arranged in the housing via a first rotating shaft, and the compressor impeller is rotatably arranged in the compressor via a second rotating shaft; the pump wheel is connected to the first rotating shaft, and the driven impeller is connected to the second rotating shaft, and the pump wheel and the driven impeller are arranged opposite each other in the same sealed housing, and the sealed housing is filled with transmission fluid;

[0023] The pump impeller rotates synchronously with the turbine blades, creating a vortex in the transmission fluid. The pump impeller then drives the driven impeller and the compressor impeller through the transmission fluid. This vortex gently increases the compressor impeller's speed, preventing the impact of speed jumps on the diesel engine and generator when the turbine is turned on. This extends the service life of the diesel engine and generator, and improves the stability of the generator set's output voltage.

[0024] The above-mentioned records related to the content of the invention are only an overview of the technical solution of this application. In order to enable ordinary technicians in this field to understand the technical solution of this application more clearly, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purposes and other purposes, features and advantages of this application easier to understand, the following is an explanation in combination with the specific implementation methods and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only used to illustrate the principles, implementation methods, applications, features and effects of the specific embodiments of the present invention and other related contents, and are not to be considered as limiting the present application.

[0026] In the drawings of the specification:

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the turbocharged diesel generator set described in the specific embodiment;

[0028] Figure 2 A side view of a turbocharged diesel generator set according to a specific embodiment;

[0029] Figure 3 Schematic diagram of the three-dimensional structure of the turbocharger according to the specific embodiment;

[0030] Figure 4 Schematic diagram of the structure of the turbocharger described in the specific embodiment;

[0031] Figure 5 It is a structural schematic diagram of the pump wheel and the driven impeller in a specific embodiment;

[0032] Figure 6 for Figure 5 A partial enlarged view of part A;

[0033] The reference numerals in the above drawings are described as follows:

[0034] 1. Diesel engine; 11. Fan; 12. Starter motor;

[0035] 2. Generator;

[0036] 3. Turbocharger; 31. Intake pipe; 32. Compressor; 30. Connecting device; 33. Turbine; 34. First driver; 35. First push rod; 37. Support bearing; 38. Sealing housing;

[0037] 341, second driver; 323, driven impeller; 333, pump wheel; 324, interpolated shaft;

[0038] 334, outer sleeve; 351, second push rod; 352, valve shaft; 353, shift fork;

[0039] 321, air outlet; 322, compressor impeller; 331, exhaust gas inlet;

[0040] 332, turbine blade; 381, oil inlet; 382, oil outlet; DETAILED DESCRIPTION

[0041] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0042] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0043] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0044] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0045] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0046] Without further limitations, in this application, the words "include", "comprise", "have" or other similar open-ended expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product that includes the elements, so that the process, method or product that includes a series of elements may include not only those defined elements, but also other elements that are not explicitly listed, or also include elements inherent to such process, method or product.

[0047] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0048] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0049] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] See also Figures 1 to 6 , this embodiment provides a turbocharged diesel generator set. Figure 1 and Figure 2 As shown, the turbocharged diesel generator set includes a diesel engine 1, a turbocharger 3, and a generator 2. The diesel engine 1 is used to drive the generator 2 to generate electricity, and the turbocharger 3 is used to increase the intake pressure of the diesel engine 1. The turbocharger 3 includes a turbine 33, a compressor 32, and a connecting device 30. The turbine 33 is connected to the exhaust pipe of the diesel engine 1, and the compressor 32 is connected to the intake pipe 31 of the diesel engine 1. The connecting device 30 is used to drive the connection between the turbine and the compressor, so that the power of the turbine is transmitted to the compressor through the connecting device 30, thereby driving the compressor.

[0051] like Figure 3 、 Figure 4 and Figure 5 As shown, the turbine 33 includes a housing, turbine blades 332, and an intake valve. The compressor 32 includes a compressor impeller 322. The connecting device includes a pump impeller 333, a driven impeller 323, and a sealed housing 38. The intake valve is opened or closed by a first actuator 34 and a first push rod 35. One end of the first push rod 35 is connected to the first actuator 34, and the other end of the first push rod 35 is connected to the valve shaft 352.

[0052] The turbine blades 332 are disposed within the housing and are rotatably disposed within the housing via a first rotating shaft. The compressor impeller is rotatably disposed within the compressor via a second rotating shaft. The pump impeller 333 is connected to the first rotating shaft, and the driven impeller 323 is connected to the second rotating shaft. The pump impeller 333 and the driven impeller 323 are disposed opposite each other within the same sealed housing 38, which is filled with transmission fluid. The pump impeller rotates synchronously with the turbine blades, causing the transmission fluid to form a vortex. The pump impeller drives the driven impeller and the compressor impeller to rotate via the transmission fluid.

[0053] Among them, such as Figure 3 and Figure 4 The figure shows a schematic diagram of the structure of a turbocharger. The compressor is provided with an air outlet 321 and an air outlet, and the turbine housing is provided with an exhaust gas inlet 331 and an exhaust gas outlet. The turbine and impeller are respectively mounted in the turbine chamber and the turbocharger. Specifically, the turbine housing contains a turbine chamber, the turbine chamber's air inlet is connected to the exhaust manifold, and the exhaust port is connected to the exhaust pipe; the compressor's air inlet is connected to the air filter duct of the intake pipe, and the exhaust port is connected to the intake pipe leading to the intake manifold. The diesel engine is provided with a starter motor 12, which is connected to the flywheel of the diesel generator via a belt. When the turbocharged diesel generator set is started, the starter motor 12 drives the crankshaft of the flywheel to rotate, thereby starting the diesel engine.

[0054] A turbocharger utilizes the energy of diesel engine exhaust gases to operate, with the turbocharger's centrifugal compressor providing compressed air as the charge for the diesel generator. In a turbocharger, the compressor impeller and turbine wheel are mounted on a common shaft, called a rotor, and rotate together. A turbocharger increases the intake air volume of the diesel generator by compressing air. It uses the inertial momentum of the diesel engine's exhaust gases to rotate the turbine blades within the turbine chamber. These, in turn, drive the coaxial compressor impeller, which pressurizes air delivered from the air filter duct and enters the diesel engine's cylinders. As the diesel engine speed increases, the exhaust gas velocity and turbine speed also increase, causing the compressor impeller to compress more air into the cylinders. The increased air pressure and density allow for the combustion of more fuel. By increasing the fuel flow and adjusting the engine speed, the engine's output power can be increased.

[0055] like Figure 5As shown, the turbine blades 332 are splined and fixedly mounted on the first rotating shaft. One end of the first rotating shaft extends outside the turbine housing, and the pump impeller is mounted on this extended end, allowing the pump impeller 333 to rotate synchronously with the turbine blades 332. Similarly, the compressor impeller 322 is splined and fixedly mounted on the second rotating shaft. The end of the second rotating shaft closest to the turbine extends outside the compressor housing. The driven impeller 323 is fixedly mounted on the extended end of the second rotating shaft and rotates synchronously with the second rotating shaft. Multiple support bearings 37 are provided on the first and second transmission shafts to reduce rotational resistance. These support bearings 37 are fully floating bearings. These fully floating bearings lack a rotor. Instead, they use lubricating oil at a pressure of 0.25-0.4 MPa to fill the two gaps between them. This allows the floating bearing to rotate in the same direction as the rotor shaft within the oil film, at a speed much faster than the rotor shaft. Fully floating bearings only transmit torque and do not withstand any reaction forces or bending moments. In this embodiment, the use of a full floating bearing can further reduce the rotational resistance and high temperature resistance of the rotating shaft, thereby further increasing the service life of the turbocharger.

[0056] A pump chamber is contained within the sealed housing 38, sealing the pump impeller and driven impeller 323 together. The pump chamber is filled with transmission fluid. Therefore, when the pump impeller 333 rotates synchronously with the turbine blades 332, the pump impeller stirs the transmission fluid within the sealed housing, forming a vortex. This vortex drives the driven impeller, thereby driving the compressor impeller 322. In this embodiment, the turbine blades and the compressor impeller transmit power through the transmission fluid. The kinetic energy of the turbine blades is used to increase the rotational potential energy of the transmission fluid, which then drives the driven impeller. Therefore, during the initial stages of turbine startup, the rotational speeds of the driven impeller and the compressor impeller are lower than those of the turbine blades, and the speed of the compressor impeller increases steadily, unlike the jump-like increase of the turbine blades.

[0057] Preferably, the rated speed of the diesel engine 1 is greater than or equal to 3000 rpm, and the output power is less than or equal to 18KW.

[0058] During operation, the diesel engine is first started by the starter motor 12. At this point, the intake valve is closed and the turbocharger has not yet engaged. As the diesel engine speed increases to a preset value (e.g., 2000 rpm), the first driver 34 controls the first push rod 35 to push the intake valve open. Exhaust gas from the diesel engine enters the turbine chamber, driving the turbine blades to rotate. The pump impeller 333 rotates synchronously with the turbine blades 332. The rotation of the pump impeller 333 creates a vortex in the transmission fluid within the sealed housing, which in turn causes the driven impeller, also located within the sealed housing, to rotate under the influence of the vortex, ultimately driving the compressor impeller. In this embodiment, the pump impeller drives the driven impeller and the compressor impeller through the transmission fluid. This causes the compressor impeller's speed to increase smoothly under the influence of the vortex, preventing the impact of speed jumps on the diesel engine and generator when the turbine is activated. This extends the service life of the diesel engine and generator, and improves the stability of the generator set's output voltage.

[0059] In this embodiment, a turbocharged diesel generator set includes a diesel engine 1, a turbocharger 3, and a generator 2. The turbocharger 3 is used to increase the intake pressure of the diesel engine 1, thereby increasing its output power. While maintaining the same displacement, the increased intake density allows the diesel engine to inject more fuel, thereby increasing engine power. The addition of a turbocharger can increase the power and torque of a diesel engine by 20% to 30%. Conversely, while maintaining the same power output, the cylinder diameter of the diesel engine can be reduced, reducing its size and weight. A diesel engine equipped with a turbocharger can improve combustion efficiency and reduce the amount of harmful components such as particulate matter and nitrogen oxides in the engine exhaust. It is an essential feature for diesel engines to meet Euro II emission standards and above. Furthermore, a turbocharger improves fuel economy and reduces fuel consumption. Due to the improved combustion performance of a diesel engine equipped with a turbocharger, fuel savings of 3% to 5% can be achieved.

[0060] In this embodiment, a connecting device 30 is also provided for controlling the compressor in the turbocharger to achieve asynchronous starting (i.e., the compressor speed is lower than the turbine speed during startup, and the compressor speed gradually increases until it equals the turbine speed). The connecting device includes a pump wheel 333, a driven impeller 323, and a sealed housing 38. The turbine and compressor transmit power through the pump wheel 333, the driven impeller 323, and the transmission fluid, thereby achieving asynchronous starting of the compressor and turbine, allowing the compressor speed to increase smoothly, avoiding the impact of speed jumps when the turbine is started on the diesel engine 1 and generator 2, thereby extending the service life of the diesel engine and generator, and improving the stability of the generator set output voltage.

[0061] In some embodiments, the first actuator 34 is a proportional electric push rod, which is used to control the proportional and gradual opening of the intake valve to gradually increase the rotation speed of the turbine blades 332, thereby further slowing the increase in the compressor impeller speed. The proportional electric push rod includes a stepper motor, which drives the telescopic rod of the proportional electric push rod to extend and retract. The stepper motor generates a corresponding rotation angle based on input pulse information, thereby driving the telescopic rod to move a corresponding length.

[0062] In this embodiment, the opening angle and opening speed of the intake valve can be accurately controlled by the proportional electric push rod, so that the turbine can increase the speed according to the preset value, and finally achieve the compressor impeller speed increase rate.

[0063] In some embodiments, the first push rod 35 is a push rod with adjustable length. Figure 4 As shown, the first push rod 35 includes a push rod body and an adjusting rod. The end of the push rod body is provided with an external bolt, and the end face of the adjusting rod is provided with a threaded hole adapted to the external bolt. By rotating the adjusting rod, the axial relative position of the adjusting rod and the push rod body can be adjusted, thereby adjusting the length of the entire push rod.

[0064] like Figure 3 As shown, the turbocharger further includes a second driver 341, a second push rod 351 and a shift fork 353. The second driver 341 is connected to the shift fork 353 via the second push rod 351. The shift fork 353 is located in the sealed housing and is used to drive the pump wheel 333 to move axially along the first rotating shaft, so that the first rotating shaft and the second rotating shaft are rigidly connected through the pump wheel and the driven impeller. Figure 5 and Figure 6 As shown, the pump impeller 333 is movably mounted on the first rotating shaft via a spline. An outer sleeve 334 is provided on the side of the pump impeller 333 near the driven impeller 323. An inner shaft 324 is provided on the outer side of the driven impeller, which is adapted to fit within the outer sleeve. When the speed difference between the pump impeller 333 and the driven impeller 323 is less than a preset value, the second driver 341 drives the pump impeller 333 toward the driven impeller via the shift fork, causing the inner shaft 324 to be inserted into the outer sleeve 334, thereby achieving a rigid connection between the first and second rotating shafts.

[0065] The inner cross-section of the outer sleeve 334 can be a regular hexagon, a square, or a triangle, and the inner shaft 324 can be shaped to match. Once the inner shaft 324 is inserted into the outer sleeve 334, the first and second shafts rotate synchronously. In this embodiment, the turbine and compressor are connected through a dual transmission mechanism, including transmission oil, the outer sleeve 334, and the inner shaft, significantly improving transmission efficiency and reliability.

[0066] like Figure 5As shown, in some embodiments, the sealed housing 38 is provided with an oil inlet 381 and an oil outlet 382. The sealed housing 38 can be formed by a plurality of arcuate pieces. The transmission fluid in the sealed housing 38 enters the sealed housing 38 through the oil inlet 381 and can flow out through the oil outlet 382, thereby facilitating transmission fluid replacement and reducing the temperature of the transmission fluid, thereby preventing damage to the connecting device due to excessive temperature.

[0067] In some embodiments, an intercooler is also included, and the air outlet of the compressor 32 is connected to the air intake pipe 31 through the intercooler. Since the temperature of the compressed gas is relatively high, this not only affects the charging efficiency, but also easily causes deflagration. Therefore, a device for lowering the intake air temperature must be installed. Therefore, in this embodiment, an intercooler, or an intermediate cooler, is provided between the turbocharger outlet and the intake pipe to cool the air entering the cylinder. The intercooler uses air cooling or water cooling, and the heat of the air is dissipated into the atmosphere through cooling, thereby reducing the intake air temperature. An intercooler with good performance can not only keep the compression ratio of the diesel engine at a high value without causing deflagration, but also reduce the temperature to increase the intake pressure, further improving the effective power of the engine. The structure of the intercooler is similar to that of a water tank radiator. It is equipped with many small pipes inside, which disperse the high-temperature and high-pressure air into many small pipes. Normal-temperature air flows through the outside of the pipes at high speed (some use circulating water cooling or cooling fans) to achieve the purpose of cooling (the temperature of the compressed air can be reduced from 150°C to about 50°C). While increasing the engine power output, it reduces the temperature of the engine compression starting point and the average temperature of the entire cycle, thereby reducing the engine's exhaust temperature, heat load and NOx emissions.

[0068] like Figure 1 and Figure 2 As shown, in some embodiments, a fan 11 is provided at the front end of the diesel engine 1, and the intercooler is located on the air outlet side of the fan 11. The fan 11 is located at the front end of the diesel engine's flywheel. When the diesel engine is operating, the flywheel drives the fan 11 to rotate at high speed, generating a large amount of airflow that blows toward the diesel engine body at the rear end, thereby reducing the surface temperature of the diesel engine and maintaining its operation within a stable temperature range.

[0069] In some embodiments, the generator 2 is fixedly connected to the diesel engine 1 via bolts. In this embodiment, the generator 2 comprises a housing, a stator, and a rotor disposed within the housing. The housing is fixedly connected to the rear end of the diesel engine via bolts, and the rotor is connected to the diesel engine's power output shaft. In this embodiment, the direct connection of the generator 2 to the diesel engine 1 results in a smaller generator set and higher transmission efficiency.

[0070] like Figure 1 and Figure 2 As shown, in some embodiments, the turbocharger is disposed on the upper side of the diesel engine 1. The turbocharger 3 is fixedly connected to the upper side of the diesel engine (i.e., the upper side) via a mounting bracket, so that a large amount of heat generated by the turbocharger during operation can be directly dissipated to the external space of the diesel engine by the action of the fan.

[0071] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A turbocharged diesel generator set, characterized in that: Includes diesel engine, turbocharger and generator; The diesel engine is used to drive the generator to generate electricity, and the turbocharger is used to increase the intake pressure of the diesel engine; The turbocharger includes a turbine, a compressor, and a connecting device; the turbine is connected to the exhaust pipe of the diesel engine, the compressor is connected to the intake pipe of the diesel engine, and the connecting device is used to drive the connection between the turbine and the compressor; The turbine includes a casing, turbine blades and an intake valve, the compressor includes a compressor impeller, and the connecting device includes a pump wheel, a driven impeller and a sealing housing; The turbine blades are rotatably disposed in the housing via a first rotating shaft, and the compressor impeller is rotatably disposed in the compressor via a second rotating shaft; the pump impeller is connected to the first rotating shaft, and the driven impeller is connected to the second rotating shaft. The pump impeller and the driven impeller are disposed opposite each other in the same sealed housing, and the sealed housing is filled with transmission fluid; The pump wheel and the turbine blades rotate synchronously, causing the transmission fluid to form a vortex, and the pump wheel drives the driven impeller and the compressor impeller to rotate through the transmission fluid; The invention also includes a first driver, which drives the intake valve to open and close via a first push rod; The first driver is a proportional electric push rod, which is used to control the intake valve to open proportionally and gradually so that the rotation speed of the turbine blade increases smoothly; It also includes a second driver, a second push rod and a shift fork, wherein the second driver is connected to the shift fork via the second push rod; The pump wheel is movably sleeved on the first rotating shaft through a spline, an outer sleeve is provided on the side of the pump wheel close to the driven impeller, and an inner plug shaft adapted to the outer sleeve is provided on the outer side of the driven impeller; When the speed difference between the pump wheel and the driven impeller is less than a preset value, the second driver drives the pump wheel to move toward the driven impeller through the shift fork, so that the inner plug-in shaft is inserted into the outer sleeve, thereby realizing a rigid connection between the first rotating shaft and the second rotating shaft.

2. The turbocharged diesel generator set according to claim 1, characterized in that: The first rotating shaft and the second rotating shaft are provided with a plurality of support bearings.

3. The turbocharged diesel generator set according to claim 2, characterized in that: The support bearing is a fully floating bearing.

4. The turbocharged diesel generator set according to claim 1, characterized in that: It also includes an intercooler, and the air outlet of the compressor is connected to the air inlet pipe through the intercooler.

5. The turbocharged diesel generator set according to claim 4, characterized in that: A fan is provided at the front end of the diesel engine, and the intercooler is located at the air outlet side of the fan.

6. The turbocharged diesel generator set according to claim 1, characterized in that: The rated speed of the diesel engine is greater than or equal to 3000 rpm, and the output power is less than or equal to 18KW.

7. The turbocharged diesel generator set according to claim 1, characterized in that: The generator is fixedly connected to the diesel engine via bolts.

8. The turbocharged diesel generator set according to claim 1, characterized in that: The turbocharger is arranged on an upper side of the diesel engine.

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