A radial position variable nozzle structure

Abstract

The present application relates to a radial position variable nozzle structure, belonging to the turbocharging technical field. The nozzle structure of the present application comprises a fixed disc, an adjusting block, a nozzle and a fork. The fixed disc is a ring disc, and a plurality of round holes are arranged for placing the adjusting block; the adjusting block is a cylindrical block matching the size of the round holes on the fixed disc, and is installed in the round holes to rotate around the central axis of the round holes; an eccentric hole is arranged on the adjusting block; the nozzle mainly comprises a nozzle blade and a rotating rod, and the rotating rod is installed in the eccentric hole of the adjusting block; the fork is connected with the rotating rod of the nozzle, and is used for adjusting the angle of the nozzle. The present application can change the position of the eccentric hole on the adjusting block, i.e. the position of the center of the rotating rod of the nozzle, to achieve the purpose of adjusting the radial position of the nozzle relative to the shaft center of the whole mechanism, so that the nozzle structure has a greater range of adjustment capability, and the turbocharging range can be widened and the turbine with multiple wheel diameters can be adapted.

Description

Technical Field

[0001] This invention belongs to the field of turbocharging technology, specifically relating to a nozzle structure with variable radial position. Background Technology

[0002] Turbochargers utilize the energy of exhaust gases to increase the intake air density of an engine and are currently widely used in engines. To adapt to the engine's wide operating range, turbine nozzle structures or variable nozzle mechanisms are often used to improve turbocharger turbine efficiency. Compared to conventional turbochargers, variable nozzle turbochargers can achieve wide flow matching across a broad engine speed range, thus offering advantages in improving engine torque characteristics and acceleration at low speeds, and further improving power recovery at high speeds. Because variable nozzle turbochargers can achieve good matching across the entire engine operating range, they improve transient response at low speeds and avoid turbocharger overspeed and overheating problems at high speeds. However, current nozzle mechanisms are mostly based on a fixed nozzle rotation axis position, with nozzle opening adjusted by the nozzle rotation angle, resulting in a relatively limited adjustment range. Therefore, a radially adjustable nozzle mechanism is needed to broaden the adjustment range, improve the precise adjustment capability under multiple operating conditions, and enhance the adaptability to multi-diameter turbines. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by the present invention is how to provide a nozzle structure with a variable radial position, so as to solve the problem that the current nozzle mechanisms are basically fixed in position of the nozzle rotation axis and the nozzle opening is adjusted by the nozzle rotation angle, which has a relatively limited adjustment range.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention proposes a nozzle structure with variable radial position, the nozzle structure comprising: a fixed disk (1), an adjusting block (2), a nozzle (3), and a fork (4);

[0007] The fixed disk (1) is an annular disk with several circular holes set on it according to the required blade installation positions;

[0008] The adjusting block (2) is a cylindrical block whose size matches the circular hole on the fixed plate. It can be installed in the circular hole and rotate around the central axis of the circular hole. An eccentric hole is provided on the adjusting block for installing the nozzle. Position marks are provided on the adjusting block.

[0009] The nozzle (3) is a fixed nozzle or an adjustable nozzle, including nozzle blades and a rotating rod. The rotating rod is installed in the eccentric hole of the adjusting block and is fixed in the eccentric hole or rotates around the axis of the eccentric hole. The nozzle blades are sleeved around the rotating rod and are located above the fixed plate (1).

[0010] The shift fork (4) is located at the bottom of the fixed plate (1). When it is an adjustable nozzle, the shift fork (4) is connected to the rotating rod of the nozzle (3) to adjust the angle of the nozzle (3).

[0011] Furthermore, the nozzle structure is coaxial with the turbine, and the nozzle blades correspond to the turbine inlet position.

[0012] Furthermore, the position mark and the center of the eccentric hole are on the same axis of the adjusting block (2) and located at both ends of the axis of the adjusting block (2).

[0013] Furthermore, when the nozzle (3) is an adjustable nozzle, the fork (4) is connected to the bottom of the nozzle's rotating rod.

[0014] Furthermore, by rotating the adjusting block (2), the position of the eccentric hole on the adjusting block (2), that is, the position of the center of the nozzle rotating rod, is changed, so as to adjust the radial position of the nozzle relative to the axis of the overall mechanism.

[0015] Furthermore, when the position mark is located on the outermost ring, the nozzle (3) is in a small radial position relative to the overall mechanism.

[0016] Furthermore, when the position mark is located in the innermost circle, the nozzle (3) is in a large radial position relative to the overall mechanism.

[0017] Furthermore, the radial position is adjustable within a range of twice the eccentricity of the eccentric hole of the adjusting block (2).

[0018] Furthermore, when the nozzle (3) is in different positions, the flow area of ​​the nozzle (3) will change under the same nozzle (3) angle; when the nozzle (3) is an adjustable nozzle, by changing the radial position of the nozzle in conjunction with the adjustment of the nozzle angle, the adjustment capability of the nozzle structure is enhanced, and it can better adapt to the different working conditions of the turbine.

[0019] Furthermore, the nozzle (3) position is variable, and the same nozzle structure can be adapted to turbines with different wheel diameters; when the nozzle is in the large radial position, it can be adapted to turbines with large wheel diameters, and when the nozzle is in the small radial position, it can be adapted to turbines with small wheel diameters.

[0020] (III) Beneficial Effects

[0021] This invention proposes a nozzle structure with variable radial position. Compared with the prior art, the nozzle structure with variable radial position of this invention has the following advantages:

[0022] (1) The present invention provides a nozzle structure with a variable radial position, which can change the position of the eccentric hole on the adjusting block, i.e. the position of the center of the nozzle rotating rod, by rotating the adjusting block, thereby achieving the purpose of adjusting the radial position of the nozzle relative to the axis of the overall mechanism, so that the nozzle structure has a wider range of adjustment capabilities and can broaden the adjustment range of the turbine end.

[0023] (2) The present invention provides a nozzle structure with variable radial position, which can adjust both nozzle position and nozzle angle, and can better adapt to different turbine operating conditions.

[0024] (3) The present invention provides a nozzle structure with variable radial position. By adjusting the radial position of the nozzle, the same nozzle mechanism can be adapted to turbines with multiple wheel diameters. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a nozzle structure with a variable radial position according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the nozzle at a small radial position according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of nozzles at equal radial positions in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the nozzle at a large radial position according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of a nozzle with a large radial position adapted to a large-size turbine according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Fixed plate; 2. Adjusting block; 3. Nozzle; 4. Shift fork. Detailed Implementation

[0032] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0033] In view of this, the present invention aims to provide a nozzle structure with a variable radial position, which enables the nozzle structure to have a wider range of adjustment capabilities, broaden the turbine end adjustment range, and adapt to turbines with multiple wheel diameters.

[0034] This invention provides a nozzle structure with variable radial position, including a fixed disk, an adjusting block, a nozzle, and a shift fork. The fixed disk is an annular disk with several circular holes for placing the adjusting block; the adjusting block is a cylindrical block whose size matches the circular holes on the fixed disk, installed in the circular holes and rotatable around the central axis of the circular holes, and has an eccentric hole; the nozzle mainly includes nozzle blades and a rotating rod, the rotating rod being installed in the eccentric hole of the adjusting block; the shift fork is connected to the rotating rod of the nozzle and is used to adjust the angle of the nozzle.

[0035] This invention can change the position of the eccentric hole on the adjusting block, i.e. the position of the center of the nozzle rotating rod, by rotating the adjusting block, thereby achieving the purpose of adjusting the radial position of the nozzle relative to the axis of the overall mechanism. This allows the nozzle structure to have a wider range of adjustment capabilities, which can broaden the adjustment range of the turbine end and adapt to turbines with multiple wheel diameters.

[0036] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0037] A nozzle structure with variable radial position is disclosed, comprising: a fixed disk (1), an adjusting block (2), a nozzle (3), and a shift fork (4). The structure is similar to the conventional nozzle structure in its installation method, and its position is coaxial with the turbine, with the nozzle blades corresponding to the turbine inlet position.

[0038] The fixed disk (1) is an annular disk with several circular holes set on it according to the required blade installation positions.

[0039] The adjusting block (2) is a cylindrical block whose size matches the circular hole on the fixed plate. It can be installed in the circular hole and rotate around the central axis of the circular hole. An eccentric hole is provided on the adjusting block for installing the nozzle. Position marks are provided on the adjusting block.

[0040] The nozzle (3) is a fixed nozzle or an adjustable nozzle, mainly consisting of nozzle blades and a rotating rod. The rotating rod is installed in the eccentric hole of the adjusting block and can be fixed in the eccentric hole or rotated around the axis of the eccentric hole. The nozzle blades are sleeved around the rotating rod and are located above the fixed plate (1).

[0041] The shift fork (4) is located at the bottom of the fixed plate (1). When it is an adjustable nozzle, the shift fork (4) is connected to the rotating rod of the nozzle (3) to adjust the angle of the nozzle (3).

[0042] Furthermore, the present invention can change the position of the eccentric hole on the adjusting block (2) by rotating the adjusting block (2), that is, the position of the center of the nozzle rotating rod, so as to adjust the radial position of the nozzle (3) relative to the axis of the overall mechanism, thereby giving the nozzle structure a wider range of adjustment capabilities, which can broaden the adjustment range of the turbine end and adapt to turbines with multiple wheel diameters. The radial position adjustable range of the present invention is twice the eccentricity of the eccentric hole of the adjusting block (2).

[0043] Example 1:

[0044] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] A nozzle structure with variable radial position mainly includes a fixed disk (1), an adjusting block (2), a nozzle (3), and a shift fork (4). The structure is similar to the conventional nozzle structure in terms of installation method, and its position is coaxial with the turbine, with the nozzle blades corresponding to the turbine inlet position.

[0046] The fixed disk (1) is an annular disk with several circular holes set on it according to the required blade installation positions.

[0047] The adjusting block (2) is a cylindrical block whose size matches the circular hole on the fixed plate. It is installed in the circular hole and can rotate around the central axis of the circular hole. An eccentric hole is provided on the adjusting block for installing the nozzle. Position marks are provided on the adjusting block.

[0048] Furthermore, the position mark and the center of the eccentric hole are on the same axis of the adjusting block (2) and located at both ends of the axis of the adjusting block (2).

[0049] The nozzle (3) is a fixed nozzle or an adjustable nozzle, mainly including nozzle blades and a rotating rod. The rotating rod is installed in the eccentric hole of the adjusting block and can be fixed in the eccentric hole or rotated around the axis of the eccentric hole.

[0050] When the nozzle (3) is an adjustable nozzle, the fork (4) is connected to the bottom of the nozzle's rotating rod to adjust the angle of the nozzle (3).

[0051] The present invention can change the position of the eccentric hole on the adjusting block (2), that is, the position of the center of the nozzle rotating rod, so as to adjust the radial position of the nozzle relative to the axis of the whole mechanism.

[0052] When the position mark is on the outermost ring, the nozzle (3) is in a small radial position relative to the overall mechanism;

[0053] When the position mark is in the innermost circle, the nozzle (3) is in the large radial position relative to the overall mechanism.

[0054] This invention allows adjustment of the nozzle radial position within an adjustable range of twice the eccentricity of the eccentric hole in the adjusting block (2), see [link to relevant documentation]. Figures 2-4 When the nozzle (3) is in different positions, the flow area of ​​the nozzle (3) will change under the same nozzle (3) angle. Based on this, the present invention expands the adjustment range of the nozzle structure.

[0055] When the nozzle (3) is an adjustable nozzle, the radial position of the nozzle can be changed by the present invention in combination with the adjustment of the nozzle angle, thereby enhancing the adjustment capability of the nozzle structure and better adapting to the different working conditions of the turbine.

[0056] In this invention, the nozzle (3) position is variable, so the same nozzle structure can be adapted to turbines with different wheel diameters. For example, when the nozzle is in a large radial position, it can be adapted to a large-diameter turbine. See [link to related documentation]. Figure 5 When the nozzle is in a small radial position, it can be adapted to small-diameter turbines, which has better adaptability and a wider range of applications compared to traditional nozzle mechanisms.

[0057] Example 2:

[0058] A nozzle structure with variable radial position is disclosed, comprising a fixed disk (1), an adjusting block (2), a nozzle (3), and a shift fork (4). The structure is similar to the conventional nozzle structure in its installation method, and its position is coaxial with the turbine, with the nozzle blades corresponding to the turbine inlet position.

[0059] Furthermore, the fixing disk (1) is an annular disk with several circular holes set on it according to the required blade installation positions.

[0060] Furthermore, the adjusting block (2) is a cylindrical block whose size matches the circular hole on the fixed plate. It is installed in the circular hole and can rotate around the central axis of the circular hole. An eccentric hole is provided on the adjusting block for installing the nozzle, and a position mark is provided on the adjusting block.

[0061] Furthermore, the nozzle (3) is a fixed nozzle or an adjustable nozzle, mainly including nozzle blades and a rotating rod. The rotating rod is installed in the eccentric hole of the adjusting block and can be fixed in the eccentric hole or rotate around the axis of the eccentric hole.

[0062] Furthermore, when it is an adjustable nozzle, a fork (4) is connected to the nozzle's rotating rod to adjust the nozzle angle.

[0063] Compared with the prior art, the radially variable nozzle structure of the present invention has the following advantages:

[0064] (1) The present invention provides a nozzle structure with a variable radial position, which can change the position of the eccentric hole on the adjusting block, i.e. the position of the center of the nozzle rotating rod, by rotating the adjusting block, thereby achieving the purpose of adjusting the radial position of the nozzle relative to the axis of the overall mechanism, so that the nozzle structure has a wider range of adjustment capabilities and can broaden the adjustment range of the turbine end.

[0065] (2) The present invention provides a nozzle structure with variable radial position, which can adjust both nozzle position and nozzle angle, and can better adapt to different turbine operating conditions.

[0066] (3) The present invention provides a nozzle structure with variable radial position. By adjusting the radial position of the nozzle, the same nozzle mechanism can be adapted to turbines with multiple wheel diameters.

[0067] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A nozzle structure with variable radial position, characterized in that, The nozzle structure includes: a fixed plate (1), an adjusting block (2), a nozzle (3), and a shift fork (4); The fixed disk (1) is an annular disk with several circular holes set on it according to the required blade installation positions; The adjusting block (2) is a cylindrical block whose size matches the circular hole on the fixed plate. It is installed in the circular hole and rotates around the central axis of the circular hole. An eccentric hole is provided on the adjusting block for installing the nozzle. Position marks are provided on the adjusting block. The nozzle (3) is an adjustable nozzle, including nozzle blades and a rotating rod. The rotating rod is installed in the eccentric hole of the adjusting block and rotates around the axis of the eccentric hole. The nozzle blades are sleeved around the rotating rod and are located above the fixed plate (1). The fork (4) is located at the bottom of the fixed plate (1) and is connected to the rotating rod of the nozzle (3) by the fork (4) to adjust the angle of the nozzle (3); in, By rotating the adjusting block (2), the position of the eccentric hole on the adjusting block (2) is changed, that is, the position of the center of the nozzle rotating rod, so as to adjust the radial position of the nozzle relative to the axis of the whole mechanism. The radial position is adjustable within a range that is twice the eccentricity of the eccentric hole of the adjusting block (2); When the nozzle (3) is in different positions, the flow area of ​​the nozzle (3) will change under the same nozzle (3) angle; by changing the radial position of the nozzle in conjunction with the adjustment of the nozzle angle, the adjustment capability of the nozzle structure is enhanced, and it can better adapt to the different working conditions of the turbine.

2. The nozzle structure with variable radial position as described in claim 1, characterized in that, The nozzle structure is coaxial with the turbine, and the nozzle blades correspond to the turbine inlet position.

3. The nozzle structure with variable radial position as described in claim 1, characterized in that, The position mark and the center of the eccentric hole are on the same axis of the adjusting block (2) and located at both ends of the axis of the adjusting block (2).

4. The nozzle structure with variable radial position as described in claim 1, characterized in that, The fork (4) is connected to the bottom of the rotating rod of the nozzle.

5. The nozzle structure with variable radial position as described in claim 1, characterized in that, When the position mark is on the outermost ring, the nozzle (3) is in a small radial position relative to the overall mechanism.

6. The nozzle structure with variable radial position as described in claim 1, characterized in that, When the position mark is in the innermost circle, the nozzle (3) is in the large radial position relative to the overall mechanism.

7. The nozzle structure with variable radial position as described in claim 1, characterized in that, The nozzle (3) position is variable, and the same nozzle structure can be adapted to turbines with different wheel diameters; when the nozzle is in the large radial position, it can be adapted to turbines with large wheel diameters, and when the nozzle is in the small radial position, it can be adapted to turbines with small wheel diameters.

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