A turbocharger and power system
By introducing a booster turbine into the turbocharger and using compressed air for propulsion, the reliability and safety issues of large-bore marine engines under low-speed conditions have been solved, and the low-speed performance of the engine has been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEICHAI POWER CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-10
AI Technical Summary
Existing turbochargers have poor reliability and pose a fire risk in large-bore marine engines, especially under low-speed conditions.
A booster turbine is introduced into the turbocharger. Compressed air drives the booster turbine to increase the turbocharger speed at low speeds. The compressor and turbine impellers are connected. The booster turbine is driven by compressed air to rotate the second shaft, which in turn drives the first shaft. The working state of the booster turbine is controlled by a control circuit and a pneumatic solenoid valve.
It improves the engine's low-speed performance, enhances the reliability and safety of the turbocharger, and reduces the risk of fire.
Smart Images
Figure CN224478981U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of turbocharging technology, specifically to a turbocharger and power system. Background Technology
[0002] In the existing technology, an electric motor is added to the turbocharger shaft, using a battery as a power source, and the speed of the turbocharger is adjusted by a controller; however, turbochargers using electric motors have poor reliability and pose a certain risk of fire, making them unsuitable for large-bore marine engines. Utility Model Content
[0003] In view of this, this application provides a turbocharger and power system that, when the engine is operating at low speed, can activate a booster turbine driven by compressed air to increase the turbocharger speed, thereby improving the engine's low-speed performance and enhancing its reliability and safety.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] A turbocharger, comprising:
[0006] A compressor and a turbine, wherein the impeller of the compressor and the impeller of the turbine are connected by a first rotating shaft, the compressor is disposed at a first end of the first rotating shaft, and the turbine is disposed at a second end of the first rotating shaft;
[0007] A booster turbine is disposed at one end of the compressor. The booster turbine has a second shaft coaxial with the first shaft, and the second end of the second shaft can be connected to the first end of the first shaft. The booster turbine is driven by compressed air, and when the second shaft of the booster turbine rotates, it can drive the first shaft to rotate together.
[0008] Optionally, the booster turbine includes a housing and a turbine body, the turbine body being able to slide relative to the housing along the length direction of the second rotating shaft and approach the compressor, and engaging the second end of the second rotating shaft with the first end of the first rotating shaft; the turbine body being able to slide relative to the housing along the length direction of the second rotating shaft and away from the compressor, and separating the second end of the second rotating shaft from the first end of the first rotating shaft.
[0009] Optionally, the second end of the second rotating shaft is provided with a spline, and the first end of the first rotating shaft is provided with a spline sleeve that mates with the spline.
[0010] Optionally, the booster turbine is provided with an air supply port for supplying air to the turbine body, and the air supply port is connected to the air supply passage; the booster turbine is also provided with a control air inlet and a control air outlet, the control air inlet and the control air outlet are connected to a control circuit, and the control circuit can control the sliding out and sliding in of the turbine body relative to the housing and the connection and disconnection of the air supply passage.
[0011] Optionally, the air supply circuit includes, in sequence, an air source, a pneumatic solenoid valve, and the air supply port; when the air supply circuit is connected, the turbine body works and drives the second rotating shaft to rotate; when the air supply circuit is disconnected, the turbine body stops working and the second rotating shaft stops rotating.
[0012] Optionally, the control circuit includes the following components connected in sequence: the pneumatic solenoid valve, the control solenoid valve, the control air inlet, the booster turbine, and the control air outlet, wherein the control air outlet is further connected to the pneumatic solenoid valve.
[0013] When the control solenoid valve is opened, the control circuit is connected, the turbine body slides out relative to the housing, and the air supply circuit is connected.
[0014] When the control solenoid valve is closed, the control circuit is disconnected, the turbine body slides into the housing, and the air supply path is disconnected.
[0015] Optionally, a pressure gauge is also provided between the pneumatic solenoid valve and the control solenoid valve.
[0016] Optionally, the air source is a compressed air cylinder.
[0017] Optionally, the compressed air cylinder is connected to the pneumatic solenoid valve via an air filter.
[0018] This application also provides a power system including an engine and the turbocharger, wherein the exhaust manifold of the engine is connected to the intake port of the turbine of the turbocharger.
[0019] The turbocharger of this application can activate a booster turbine driven by compressed air when the engine is operating at low speeds. This booster turbine increases the turbocharger speed, thereby improving the engine's low-speed performance. The power system of this application uses the aforementioned turbocharger to improve engine performance, offering high reliability and safety. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the turbocharger of this application;
[0022] Figure 2 This is a schematic diagram of the booster turbine and its air passage in this application.
[0023] exist Figures 1-2 middle:
[0024] 1. Boost turbine; 2. Second shaft; 3. Pneumatic solenoid valve; 4. Pressure gauge; 5. Control solenoid valve; 6. Silencer; 7. Control circuit pipeline; 8. Air supply pipeline; 9. Air filter; 10. Compressor; 11. Turbine. Detailed Implementation
[0025] This application provides a turbocharger and power system. When the engine is operating at low speed, a booster turbine driven by compressed air can be activated to increase the turbocharger speed, thereby improving the engine's low-speed performance and enhancing its reliability and safety.
[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] like Figures 1-2 As shown, this application provides a turbocharger, comprising:
[0028] Compressor 10 and turbine 11, the impeller of compressor 10 and the impeller of turbine 11 are connected by a first rotating shaft, compressor 10 is located at the first end of the first rotating shaft, and turbine 11 is located at the second end of the first rotating shaft;
[0029] A booster turbine 1 is located at one end of the compressor 10. The booster turbine 1 has a second shaft 2 coaxial with the first shaft. The second end of the second shaft 2 can be connected to the first end of the first shaft. The booster turbine 1 is driven by compressed air. When the second shaft 2 of the booster turbine 1 rotates, it can drive the first shaft to rotate together.
[0030] To minimize the rotational inertia of the turbocharger, the thickness and strength margin of the compressor 10 impeller of the turbocharger are not large. Currently, most of the compressor 10 of the turbochargers used in large-bore engines are not allowed to use compressed air for boosting. MAN turbochargers only allow the use of compressed air with a pressure of less than 4 bar, while the booster turbine 1 can withstand the impact of high-pressure air.
[0031] The turbocharger of this application can activate the booster turbine 1 driven by compressed air when the engine is operating at low speed, thereby increasing the speed of the turbocharger and improving the low-speed performance of the engine.
[0032] In a preferred embodiment, such as Figure 1 As shown, the booster turbine 1 includes a housing and a turbine body that can slide relative to each other. The turbine body can slide relative to the housing along the length of the second shaft 2 and approach the compressor 10, that is, the turbine body can slide out relative to the housing and engage the second end of the second shaft 2 with the first end of the first shaft. Correspondingly, the turbine body can slide relative to the housing along the length of the second shaft 2 and move away from the compressor 10, that is, the turbine body can slide in relative to the housing and separate the second end of the second shaft 2 from the first end of the first shaft.
[0033] In this embodiment, the second end of the second rotating shaft 2 and the first end of the first rotating shaft are connected and separated by the sliding of the turbine body into and out of the housing. Of course, the booster turbine 1 can be fixedly installed on the fixed bracket, and the fixed bracket can be slid along the slide rail that is consistent with the length direction of the second rotating shaft 2, thereby realizing the connection and separation of the second end of the second rotating shaft 2 and the first end of the first rotating shaft.
[0034] In a preferred embodiment, a spline is provided at the second end of the second rotating shaft 2, and a spline sleeve that mates with the spline is provided at the first end of the first rotating shaft. Thus, when the turbine body slides relative to the housing along the length of the second rotating shaft 2 and approaches the compressor 10, the second rotating shaft 2 slides along its length and approaches the first rotating shaft. The spline at the second end of the second rotating shaft 2 extends into the spline sleeve at the first end of the first rotating shaft. Thus, when the second rotating shaft 2 of the booster turbine 1 rotates, the first rotating shaft and the second rotating shaft 2 can rotate synchronously.
[0035] In a preferred embodiment, such as Figure 2 As shown, the booster turbine 1 is provided with an air supply port for supplying air to the turbine body, and the air supply port is connected to the air supply passage; the booster turbine 1 is also provided with a control air inlet and a control air outlet, which are connected to a control circuit. The control circuit can control the sliding out and sliding in of the turbine body relative to the housing and the connection and disconnection of the air supply passage.
[0036] The control loop controls the connection / disconnection of the air supply path and the sliding out / in of the turbine body relative to the housing, thereby switching the working state of the booster turbine 1 according to real-time operating conditions.
[0037] In a preferred embodiment, such as Figure 2 As shown, the air supply circuit includes, in sequence, an air source, a pneumatic solenoid valve 3, and an air supply port. The air source, the pneumatic solenoid valve 3, and the air supply port are all connected through the air supply circuit pipeline 8. When the air supply circuit is connected, the compressed air from the air source reaches the air supply port through the pneumatic solenoid valve 3 and enters the booster turbine 1 from the air supply port, causing the turbine body to work and drive the second rotating shaft 2 to rotate. When the air supply circuit is disconnected, the turbine body stops working and the second rotating shaft 2 stops rotating.
[0038] In addition, a muffler 6 is installed on the booster turbine to reduce the noise emitted by the booster turbine.
[0039] In a preferred embodiment, such as Figure 2 As shown, the control circuit includes the following components connected in sequence: pneumatic solenoid valve 3, control solenoid valve 5, control air inlet, booster turbine 1, and control air outlet. The control air outlet is then connected to the pneumatic solenoid valve 3 to form a circuit. The pneumatic solenoid valve 3, control solenoid valve 5, control air inlet, booster turbine 1, and control air outlet are all connected through the control circuit pipeline 7.
[0040] The control solenoid valve 5 is connected to the controller signal. When the control solenoid valve 5 receives a signal and opens, the control circuit is connected, the turbine body slides out relative to the housing, the second end of the second shaft 2 engages with the first end of the first shaft, and the air supply passage is connected. The air intake of the air supply passage can be adjusted, thereby adjusting the speed of the booster turbine 1.
[0041] When the control solenoid valve 5 is closed, the control circuit is disconnected, the turbine body slides into the housing, the second end of the second shaft 2 separates from the first end of the first shaft, and the air supply path is disconnected.
[0042] According to the engine's requirements for the turbocharger, when boost is needed, the second shaft 2 is pushed out by the controller and connected to the first shaft. At this time, the air supply circuit is connected, and the intake volume of compressed air in the air supply circuit can be adjusted by the controller so that the turbocharger's operating speed meets the engine's requirements. When boost is not needed, the second shaft 2 can be pulled out by the controller and disconnected from the first shaft. At this time, the air supply circuit is also disconnected, and the booster turbine 1 stops working.
[0043] In this embodiment, the second end of the second rotating shaft 2 is engaged with the first end of the first rotating shaft, and the air supply path is connected simultaneously with the opening of the control solenoid valve 5; the second end of the second rotating shaft 2 is separated from the first end of the first rotating shaft, and the air supply path is disconnected simultaneously with the closing of the control solenoid valve 5, thus simplifying the control process.
[0044] In addition, in this embodiment, the sliding of the turbine body relative to the housing is controlled by a control circuit. In other embodiments, a hydraulic structure can be used to replace the control circuit to achieve the same function.
[0045] In a preferred embodiment, such as Figure 2 As shown, a pressure gauge 4 is also installed between the pneumatic solenoid valve 3 and the control solenoid valve 5.
[0046] Pressure gauge 4 can be connected to the controller signal to monitor the pressure of the control loop. If the pressure is too high or too low, it can provide timely feedback and adjustment.
[0047] In a preferred embodiment, the air source is a compressed air cylinder.
[0048] Since the main diesel engine (main engine) and generator diesel engine (auxiliary engine) of a ship usually require high-pressure compressed air (such as 3MPa) to drive the piston to start, ships are usually equipped with main air cylinders and auxiliary air cylinders with sufficient compressed air, which can be used to provide air source for the air supply circuit and control circuit.
[0049] In a preferred embodiment, such as Figure 2 As shown, the compressed air cylinder is connected to the pneumatic solenoid valve 3 through the air filter 9, and then enters the air supply circuit or control circuit through the pneumatic solenoid valve 3. This can remove impurities carried in the compressed air, avoid contaminating the air supply circuit and control circuit, and prevent impurities from damaging the booster turbine 1.
[0050] The working process of the turbocharger in this application is as follows: Compressed air passes through an air filter and a pneumatic solenoid valve, then to a pressure gauge, then to a control solenoid valve, enters the booster turbine through the control inlet, and then returns to the pneumatic solenoid valve through the control outlet to form a control circuit; the controller sends an opening command to the control solenoid valve, the control solenoid valve opens, the control air circuit is connected, the compressed air enters the booster turbine housing and pushes the turbine body to slide out relative to the housing, the second shaft approaches the first shaft, the spline at the second end of the second shaft is inserted into the spline sleeve at the first end of the first shaft, at the same time, the compressed air returns to the pneumatic solenoid valve after passing through the above components, opening the air supply circuit, the compressed air enters the turbine body and drives the turbine body to rotate and work;
[0051] The booster turbine exit process is as follows: the controller sends a command to close the control solenoid valve, the control air circuit is disconnected, the turbine body slides into the housing, and the second shaft moves away from the first shaft and separates from the first shaft.
[0052] This application also provides a power system including an engine and a turbocharger, wherein the exhaust manifold of the engine is connected to the intake port of the turbine of the turbocharger.
[0053] The power system described in this application uses the aforementioned turbocharger to improve engine performance, resulting in high reliability and safety.
[0054] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.
[0055] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the word “or” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.
[0056] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled or recombined. These disassemblies or recombinations should be considered as equivalent solutions of this application.
[0057] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0058] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.
[0059] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.
Claims
1. A turbocharger, characterized in that, include: A compressor and a turbine, wherein the impeller of the compressor and the impeller of the turbine are connected by a first rotating shaft, the compressor is disposed at a first end of the first rotating shaft, and the turbine is disposed at a second end of the first rotating shaft; A booster turbine is disposed at one end of the compressor. The booster turbine has a second shaft coaxial with the first shaft, and the second end of the second shaft can be connected to the first end of the first shaft. The booster turbine is driven by compressed air, and when the second shaft of the booster turbine rotates, it can drive the first shaft to rotate together.
2. The turbocharger according to claim 1, characterized in that, The booster turbine includes a housing and a turbine body. The turbine body can slide relative to the housing along the length direction of the second shaft and approach the compressor, and engage the second end of the second shaft with the first end of the first shaft. The turbine body can also slide relative to the housing along the length direction of the second shaft and away from the compressor, and separate the second end of the second shaft from the first end of the first shaft.
3. The turbocharger according to claim 2, characterized in that, The second end of the second rotating shaft is provided with a spline, and the first end of the first rotating shaft is provided with a spline sleeve that mates with the spline.
4. The turbocharger according to claim 2, characterized in that, The booster turbine is provided with an air supply port for supplying air to the turbine body, and the air supply port is connected to the air supply passage; the booster turbine is also provided with a control air inlet and a control air outlet, and the control air inlet and the control air outlet are connected to a control circuit, which can control the sliding out and sliding in of the turbine body relative to the housing and the connection and disconnection of the air supply passage.
5. The turbocharger according to claim 4, characterized in that, The air supply circuit includes, in sequence, an air source, a pneumatic solenoid valve, and the air supply port; when the air supply circuit is connected, the turbine body works and drives the second rotating shaft to rotate; when the air supply circuit is disconnected, the turbine body stops working and the second rotating shaft stops rotating.
6. The turbocharger according to claim 5, characterized in that, The control circuit includes the following components connected in sequence: the pneumatic solenoid valve, the control solenoid valve, the control air inlet, the booster turbine, and the control air outlet, with the control air outlet then connected to the pneumatic solenoid valve. When the control solenoid valve is opened, the control circuit is connected, the turbine body slides out relative to the housing, and the air supply circuit is connected. When the control solenoid valve is closed, the control circuit is disconnected, the turbine body slides into the housing, and the air supply path is disconnected.
7. The turbocharger according to claim 6, characterized in that, A pressure gauge is also installed between the pneumatic solenoid valve and the control solenoid valve.
8. The turbocharger according to claim 5, characterized in that, The air source is a compressed air cylinder.
9. The turbocharger according to claim 8, characterized in that, The compressed air cylinder is connected to the pneumatic solenoid valve via an air filter.
10. A power system, characterized in that, It includes an engine and a turbocharger as described in any one of claims 1-9, wherein the exhaust manifold of the engine is connected to the intake port of the turbine of the turbocharger.