A mixed flow turbocharger with an integrated turbine and housing

Abstract

The utility model relates to turbocharger technical field especially relates to a mixed flow turbocharger vortex end integral type structure, including turbine, turbine casing, nozzle ring and heat insulation wall, and turbine and turbine casing and nozzle ring cooperation form exhaust passage, one end of nozzle ring is fixed through turbine casing and heat insulation wall, and the other end of nozzle ring is embedded turbine casing, prevents the nozzle ring deformation and position deviation under high temperature condition, and the back of turbine and heat insulation wall cooperation form the barrier of insulating exhaust gas, and in this way solved the prior art in the separation type design leads to casting difficulty and casting cost is high, and leads to assembly difficulty increases and assembly accuracy reduces, and further influence the safety and reliability of turbocharger operation technical problem.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, and in particular to an integrated turbine end structure for a mixed-flow turbocharger. Background Technology

[0002] Turbocharging systems are an important component of marine propulsion systems. A turbocharger consists of a turbine and a centrifugal compressor mounted on the same main shaft. Diesel engine exhaust gases enter the turbine through the turbine housing. The turbine uses the energy of the exhaust gases to drive the compressor impeller, drawing in fresh air and compressing it to fill the cylinders. The exhaust gases are then discharged into the atmosphere through exhaust pipes. Current mixed-flow turbochargers mostly employ a separate turbine design. The main components of the turbine end include: turbine, turbine housing, turbine casing, explosion-proof ring, nozzle ring, and heat shield.

[0003] However, the separate design leads to high casting difficulty and cost, as well as increased assembly difficulty and reduced assembly accuracy, which in turn affects the safety and reliability of the turbocharger during operation. Summary of the Invention

[0004] The purpose of this utility model is to provide an integrated turbine end structure for a mixed-flow turbocharger, which aims to solve the technical problems of high casting difficulty and cost caused by the separate design in the prior art, as well as the increased assembly difficulty and reduced assembly accuracy, thereby affecting the safety and reliability of the turbocharger during operation.

[0005] To achieve the above objectives, this utility model adopts a mixed-flow turbocharger turbine end integrated structure, including a turbine, a turbine housing, a nozzle ring, and a heat insulation wall. The turbine, the turbine housing, and the nozzle ring cooperate to form an exhaust gas passage. One end of the nozzle ring is fixed to the heat insulation wall via the turbine housing, and the other end of the nozzle ring is embedded in the turbine housing to prevent the nozzle ring from deforming and shifting its position under high temperature conditions. The back of the turbine and the heat insulation wall cooperate to form a barrier to isolate exhaust gas.

[0006] The integrated turbine end structure of the mixed-flow turbocharger also includes a bulge, which is disposed on the side of the turbine housing away from the turbine.

[0007] The nozzle ring has a protrusion, and the heat insulation wall has an adapter groove, with the protrusion placed inside the adapter groove.

[0008] The integrated turbine end structure of the mixed-flow turbocharger also includes a support block, and the nozzle ring has a slot. The support block is fixedly connected to the turbine housing, and the support block is adapted to the slot.

[0009] The nozzle ring also has two rounded corner structures.

[0010] This invention discloses an integrated turbine end structure for a mixed-flow turbocharger. In practical application, this integrated turbine end structure reduces casting difficulty and costs, enhancing its practicality. It also reduces the number of machining steps, lowers machining difficulty, and saves on finished product procurement costs, further enhancing its practicality. The integrated turbine end structure reduces assembly difficulty and improves assembly accuracy, further enhancing its practicality. Furthermore, the integrated turbine end structure allows for increased turbine housing wall thickness, improving the safety and reliability of the turbocharger during operation. This approach solves the technical problems inherent in existing technologies where separate designs lead to high casting difficulty and costs, increased assembly difficulty, and reduced assembly accuracy, ultimately affecting the safety and reliability of the turbocharger during operation. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the integrated turbine end structure of the mixed-flow turbocharger of this utility model.

[0013] 1-Turbine, 2-Turbine housing, 3-Nozzle ring, 4-Heat insulation wall, 5-Raised, 6-Rounded corner structure, 7-Protrusion, 8-Adaptor groove, 9-Support block, 10-Card slot. Detailed Implementation

[0014] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0015] Please see Figure 1 , Figure 1 This is a schematic diagram of the integrated turbine end structure of the mixed-flow turbocharger of this utility model.

[0016] This utility model provides a mixed-flow turbocharger turbine end integrated structure, including a turbine 1, a turbine housing 2, a nozzle ring 3 and a heat insulation wall 4, wherein the turbine 1, the turbine housing 2 and the nozzle ring 3 cooperate to form an exhaust gas passage. One end of the nozzle ring 3 is fixed to the heat insulation wall 4 through the turbine housing 2, and the other end of the nozzle ring 3 is embedded in the turbine housing 2 to prevent the nozzle ring 3 from deforming and shifting its position under high temperature conditions. The back of the turbine 1 and the heat insulation wall 4 cooperate to form a barrier to isolate exhaust gas. The integrated turbine end structure of the mixed-flow turbocharger also includes a ridge 5, which is disposed on the side of the turbine housing 2 away from the turbine 1. The nozzle ring 3 also has two rounded corner structures 6.

[0017] In this specific embodiment, the integrated turbine end structure reduces casting difficulty and cost, enhancing its practicality. It also reduces machining steps, lowers machining difficulty, and saves on finished product procurement costs, further enhancing practicality. The integrated turbine end structure reduces assembly difficulty and improves assembly accuracy, further enhancing practicality. Furthermore, it increases the wall thickness of the turbine housing, improving the safety and reliability of the turbocharger during operation. This approach solves the technical problems inherent in existing technologies where separate designs lead to high casting difficulty and cost, increased assembly difficulty, and reduced assembly accuracy, ultimately affecting the safety and reliability of the turbocharger during operation.

[0018] Compared with the vortex-end separation structure, this application; Comparison 1: From the perspective of component casting, it can be found that the integrated turbine end structure reduces the mold cost of the turbine housing, lowers the casting cost, and the integrated turbine housing 2 structure design is relatively simple, which reduces the casting difficulty.

[0019] Comparison 2: A comparison of processing costs and finished product procurement costs reveals that using an integrated turbine end structure design can effectively reduce the cost of turbochargers; in addition, it saves on the procurement cost of explosion-proof rings, further reducing the cost of each turbocharger.

[0020] Comparison 3: From a reliability perspective, it can be seen that the wall thickness of the turbine housing 2 is effectively increased. In special circumstances such as the turbine 1 bursting, the fragments of the turbine 1 can be contained in the turbine housing 2, increasing the safety of the turbocharger during operation.

[0021] The nozzle ring 3 has a protrusion 7, and the heat insulation wall 4 has an adapter groove 8. The protrusion 7 is placed in the adapter groove 8. By setting the protrusion 7 and the adapter groove 8, the stability of the entire structure can be improved.

[0022] Secondly, the integrated turbine end structure of the mixed-flow turbocharger also includes a support block 9, and the nozzle ring 3 also has a slot 10. The support block 9 is fixedly connected to the turbine housing 2, and the support block 9 is adapted to the slot 10. By setting the support block 9 and the slot 10, the stability of the entire structure is further improved.

[0023] The integrated turbine end structure of this mixed-flow turbocharger reduces casting difficulty and cost, enhancing its practicality. It also reduces machining steps, lowers machining difficulty, and saves on finished product procurement costs, further enhancing its practicality. Furthermore, the integrated turbine end structure reduces assembly difficulty and improves assembly accuracy, further enhancing its practicality. It allows for increased turbine housing wall thickness, improving the safety and reliability of the turbocharger during operation. This approach solves the technical problems inherent in existing technologies where separate designs lead to high casting difficulty and cost, increased assembly difficulty, and reduced assembly accuracy, ultimately affecting the safety and reliability of the turbocharger during operation.

[0024] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A mixed-flow turbocharger turbine end integrated structure, characterized in that, It includes a turbine, a turbine housing, a nozzle ring, and a heat insulation wall, wherein the turbine, the turbine housing, and the nozzle ring cooperate to form an exhaust gas passage; One end of the nozzle ring is fixed to the heat insulation wall via the turbine housing, and the other end of the nozzle ring is embedded in the turbine housing to prevent the nozzle ring from deforming and shifting its position under high temperature conditions. The back of the turbine and the heat insulation wall cooperate to form a barrier to isolate exhaust gas.

2. The integrated turbine end structure of the mixed-flow turbocharger as described in claim 1, characterized in that, The integrated turbine end structure of the mixed-flow turbocharger also includes a bulge, which is disposed on the side of the turbine housing away from the turbine.

3. The integrated turbine end structure of the mixed-flow turbocharger as described in claim 2, characterized in that, The nozzle ring has a protrusion, and the heat insulation wall has an adapter groove, with the protrusion placed within the adapter groove.

4. The integrated turbine end structure of the mixed-flow turbocharger as described in claim 3, characterized in that, The integrated turbine end structure of the mixed-flow turbocharger also includes a support block, and the nozzle ring also has a slot. The support block is fixedly connected to the turbine housing, and the support block is adapted to the slot.

5. The integrated turbine end structure of the mixed-flow turbocharger as described in claim 4, characterized in that, The nozzle ring also has two rounded corner structures.

Images