Driving and limiting device of variable geometry axial flow supercharger

Abstract

The utility model relates to the technical field of turbochargers, in particular to a variable geometry axial flow supercharger driving and limiting device which comprises a supporting ring, a driving ring, a driving arm, a first bolt and a limiting block, the driving ring is rotationally connected with the supporting ring and located above the supporting ring, the driving arm is arranged on one side of the driving ring, and the first bolt is arranged on the driving ring. The limiting block is arranged on one side of the supporting ring and located below the driving arm, the limiting block is arranged in an arc shape, blocking arms are arranged at the two ends of the limiting block, a first screw hole is formed in the surface of the driving arm, one end of the first bolt is in bolt connection with the driving arm, and the other end of the first bolt penetrates through the first screw hole and is arranged between the two blocking arms. Through the arrangement of the structure, the problem that the safety of a supercharger is low due to the fact that an airflow channel of an existing nozzle ring is not accurately adjusted is solved.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, and in particular to a variable geometry axial flow turbocharger drive limiting device. Background Technology

[0002] Variable geometry turbochargers adjust the size of the nozzle ring airflow channel to change the turbocharger's operating efficiency, ensuring that the turbocharger operates at its optimal efficiency under different operating conditions, thereby reducing fuel consumption and improving the overall efficiency of the diesel engine.

[0003] The nozzle ring airflow channel adjustment of the variable geometry turbocharger also has a range. The existing nozzle ring airflow channel adjustment is not precise enough, resulting in lower turbocharger safety. Summary of the Invention

[0004] The purpose of this invention is to provide a variable geometry axial flow booster drive limit device, which solves the problem that the existing nozzle ring airflow channel adjustment is not precise enough, resulting in low booster safety.

[0005] To achieve the above objectives, this utility model provides a variable geometry axial flow turbocharger drive limiting device, including a support ring, a drive ring, a drive arm, a first bolt, and a limiting block. The drive ring is rotatably connected to the support ring and is located above the support ring. The drive arm is disposed on one side of the drive ring, and the limiting block is disposed on one side of the support ring and is located below the drive arm. The limiting block is arc-shaped, and both ends of the limiting block are provided with stop arms. The surface of the drive arm is provided with a first screw hole. One end of the first bolt is bolted to the drive arm, and the other end of the first bolt passes through the first screw hole and is disposed between the two stop arms.

[0006] The variable geometry axial flow turbocharger drive limiting device further includes a second bolt. The surface of the drive arm is provided with a second screw hole and a first pin hole. The surface of the drive ring is provided with a first through hole and a second pin hole. The second bolt is bolted to the drive arm and passes through the second screw hole and the first through hole.

[0007] The variable geometry axial flow turbocharger drive limiting device further includes a third bolt. The surface of the limiting block is provided with a second through hole and a third pin hole. The surface of the support ring is provided with a third screw hole and a fourth pin hole. The third bolt is threadedly connected to the support ring and passes through the second through hole and the third screw hole.

[0008] The beneficial technical effects of this utility model are:

[0009] 1. This invention constrains the maximum rotation position of the nozzle ring blades. When the turbocharger is running, the turbine blades are rotating at high speed, preventing the nozzle ring blades from colliding with the turbine blades when they are too close together when the nozzle ring blades rotate too much, thus ensuring the safety of the turbocharger.

[0010] 2. This invention constrains the minimum rotational position of the nozzle ring blades. If the nozzle ring blades rotate too slowly, the turbocharger rotor speed will increase, and surge is likely to occur. Constraining the minimum rotational position of the nozzle ring blades ensures the safety of the turbocharger. 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 drive arm structure;

[0013] Figure 2 This is a schematic diagram of the limiting block structure;

[0014] Figure 3 This is a schematic diagram of the drive ring structure;

[0015] Figure 4 This is a schematic diagram of the support ring structure;

[0016] Figure 5 A front view diagram showing the installation of the drive arm, limit block, and drive ring;

[0017] Figure 6 A schematic diagram showing the installation of the drive arm, limit block, and drive ring;

[0018] Figure 7 This is a schematic diagram of the VGT assembly.

[0019] 1: Drive arm; 1-1: First screw hole; 1-2: Second screw hole; 1-3: First pin hole; 2: Limiting block; 2-1: Second through hole; 2-2: Stop arm; 2-3: Third pin hole; 3: Drive ring; 3-1: First through hole; 3-2: Second pin hole; 4: Support ring; 4-1: Third screw hole; 4-2: Fourth pin hole; 5: First bolt; 6: Second bolt; 7: Third bolt. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] Please see Figures 1 to 7 This utility model provides a variable geometry axial flow turbocharger drive limiting device, including a support ring 4, a drive ring 3, a drive arm 1, a first bolt 5, and a limiting block 2. The drive ring 3 is rotatably connected to the support ring 4 and is located above the support ring 4. The drive arm 1 is disposed on one side of the drive ring 3, and the limiting block 2 is disposed on one side of the support ring 4 and is located below the drive arm 1. The limiting block 2 is arc-shaped, and both ends of the limiting block 2 are provided with stop arms 2-2. The surface of the drive arm 1 is provided with a first screw hole 1-1. One end of the first bolt 5 is bolted to the drive arm 1, and the other end of the first bolt 5 passes through the first screw hole 1-1 and is disposed between the two stop arms 2-2.

[0022] In this embodiment, the drive arm 1, which is the power rotation medium for the drive motor and the drive ring 3, rotates around the support ring 4. When the drive arm 1 moves upward, the drive ring 3 rotates clockwise around the center of the support ring 4. When the maximum range of motion is reached, the first bolt 5 on the drive arm 1 contacts the corresponding stop arm 2-2, and the drive arm 1 can no longer move clockwise. When the drive arm 1 moves downward, the drive ring 3 rotates counterclockwise around the center of the support ring 4. When the maximum range of motion is reached, the first bolt 5 on the drive arm 1 contacts the corresponding stop arm 2-2, and the drive arm 1 can no longer move counterclockwise. By using the drive arm 1 to limit the movement, the nozzle ring blades are kept in a relatively safe position during operation of the variable geometry axial flow turbocharger in the event of motor failure or malfunction, thus preventing collision between the turbocharger turbine blades and the nozzle ring blades or preventing turbocharger surge.

[0023] Furthermore, the variable geometry axial flow turbocharger drive limiting device also includes a second bolt 6. The surface of the drive arm 1 is provided with a second screw hole 1-2 and a first pin hole 1-3. The surface of the drive ring 3 is provided with a first through hole 3-1 and a second pin hole 3-2. The second bolt 6 is bolted to the drive arm 1 and passes through the second screw hole 1-2 and the first through hole 3-1.

[0024] In this embodiment, the drive arm 1 is mounted on one side of the drive ring 3, and the drive ring 3 and the drive arm 1 are fixed by two second bolts 6 to prevent the drive part from rotating relative to the drive ring 3.

[0025] Furthermore, the variable geometry axial flow turbocharger drive limiting device also includes a third bolt 7. The surface of the limiting block 2 is provided with a second through hole 2-1 and a third pin hole 2-3. The surface of the support ring 4 is provided with a third screw hole 4-1 and a fourth pin hole 4-2. The third bolt 7 is threadedly connected to the support ring 4 and passes through the second through hole 2-1 and the third screw hole 4-1.

[0026] In this embodiment, the limiting block 2 is installed below the drive arm 1, the first bolt 5 is positioned between the two stop arms 2-2, and the limiting block 2 and the support ring 4 are fixed by the two third bolts 7, thereby improving stability.

[0027] 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 variable geometry axial flow intensifier drive limiting device, characterized in that, The device includes a support ring, a drive ring, a drive arm, a first bolt, and a limiting block. The drive ring is rotatably connected to the support ring and is located above the support ring. The drive arm is disposed on one side of the drive ring, and the limiting block is disposed on one side of the support ring and located below the drive arm. The limiting block is arc-shaped and has stop arms at both ends. The surface of the drive arm has a first screw hole. One end of the first bolt is bolted to the drive arm, and the other end of the first bolt passes through the first screw hole and is disposed between the two stop arms.

2. The variable geometry axial flow intensifier drive limiting device as described in claim 1, characterized in that, The variable geometry axial flow turbocharger drive limiting device also includes a second bolt. The surface of the drive arm is provided with a second screw hole and a first pin hole. The surface of the drive ring is provided with a first through hole and a second pin hole. The second bolt is bolted to the drive arm and passes through the second screw hole and the first through hole.

3. The variable geometry axial flow intensifier drive limiting device as described in claim 2, characterized in that, The variable geometry axial flow turbocharger drive limiting device also includes a third bolt. The surface of the limiting block is provided with a second through hole and a third pin hole. The surface of the support ring is provided with a third screw hole and a fourth pin hole. The third bolt is threadedly connected to the support ring and passes through the second through hole and the third screw hole.

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