Blisk assembly method and system based on axial-radial bidirectional error vector superposition

Abstract

The application discloses a large high-speed rotating equipment blade disc assembling method and system based on shaft diameter bidirectional error vector superposition, and belongs to the technical field of ultra-precision measurement and assembling. The method comprises the following steps: measuring the geometric parameters of the blade disc of the large high-speed rotating equipment; aligning the shaft center of the blade disc of the large high-speed rotating equipment to measure the shaft diameter bidirectional error vector of the large high-speed rotating equipment; measuring the unbalance amount data of each stage of the blade disc of the large high-speed rotating equipment; processing the geometric parameters of the blade disc, the shaft diameter bidirectional error vector and the unbalance amount data of each stage of the blade disc according to a multi-stage blade disc unbalance amount transmission model to evaluate the unbalance amount after the multi-stage blade disc assembling; and optimizing the assembling phase of the large high-speed rotating equipment according to the unbalance amount. The method solves the influence of the shaft diameter bidirectional offset error on the profile measurement accuracy of the blade disc of the large high-speed rotating equipment in the assembling process, and solves the problem that the mass center transmission of each stage of the blade disc causes the unbalance amount to be unclear when the multi-stage rotor is assembled.

Description

Technical Field

[0001] This invention relates to the field of ultra-precision measurement and assembly technology, and in particular to a method and system for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional error vectors of shaft diameter. Background Technology

[0002] Due to their complex structure and unique working environment, large high-speed rotary equipment places extremely high demands on the machining, measurement, and assembly of rotors. Rotor imbalance is a crucial criterion for assessing engine performance and directly impacts the safety performance of large high-speed rotary equipment. Excessive imbalance at each stage of the rotor after assembly causes the rotor's geometric axis to deviate from the rotation axis. This results in a significant amplification of the load on the engine during high-speed operation, generating substantial radial forces that wear down engine parts. Simultaneously, the generated torque further exacerbates the deviation from the rotation axis, progressively intensifying vibrations and causing severe heat loss, ultimately reducing the service life of the large high-speed rotary equipment or leading to malfunctions.

[0003] In the assembly process of large high-speed rotating equipment bladed disks, the coupling mechanism of the shaft diameter bidirectional offset error directly affects the transmission process of the unbalance of multi-stage bladed disks. It is urgent to propose a bladed disk assembly method based on the vector superposition of shaft diameter bidirectional error to reduce the impact of unbalance in the assembly of large high-speed rotating equipment bladed disks. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the first objective of this invention is to propose a method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional error vectors of shaft diameter, which reduces the influence of imbalance in the assembly of large high-speed rotating equipment impellers.

[0006] The second objective of this invention is to propose a large-scale high-speed rotating equipment impeller assembly system based on the superposition of bidirectional error vectors of shaft diameter.

[0007] The third objective of this invention is to provide a computer device.

[0008] A fourth objective of this invention is to provide a non-transitory computer-readable storage medium.

[0009] To achieve the above objectives, a first aspect of the present invention proposes a method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional shaft diameter error vectors, comprising the following steps: Step S1, measuring the geometric parameters of the large high-speed rotating equipment impellers, wherein the geometric parameters include impeller size parameters and impeller mass; Step S2, aligning the shaft center of the large high-speed rotating equipment impellers to measure the bidirectional shaft diameter error vector of the large high-speed rotating equipment impellers; Step S3, measuring the imbalance data of each stage of the large high-speed rotating equipment impellers; Step S4, processing the impeller geometric parameters, the bidirectional shaft diameter error vector, and the imbalance data of each stage of the impellers according to a multi-stage impeller imbalance transfer model to evaluate the imbalance after multi-stage impeller assembly; Step S5, optimizing the assembly phase of the large high-speed rotating equipment based on the imbalance.

[0010] The assembly method of large high-speed rotating equipment bladed disk based on the superposition of two-way shaft diameter error vectors in this invention solves the problem that the coupling mechanism of two-way shaft diameter offset error directly affects the transmission process of unbalance in multi-stage bladed disks during the assembly of large high-speed rotating equipment bladed disks, and reduces the influence of unbalance in the assembly of large high-speed rotating equipment bladed disks. It can be used to guide the accurate measurement and assembly of multi-stage bladed disks.

[0011] In addition, the large high-speed rotating equipment bladed disk assembly method based on the superposition of bidirectional shaft diameter error vectors according to the above embodiments of the present invention may also have the following additional technical features:

[0012] Further, in one embodiment of the present invention, step S1 specifically includes: step S101, measuring the size parameters of the bladed disk of the large high-speed rotating equipment using a coordinate measuring machine; step S102, placing the bladed disk of the large high-speed rotating equipment in the tray at the center of a three-sensor weighing instrument to obtain the mass of the bladed disk.

[0013] Further, in one embodiment of the present invention, step S2 specifically includes: step S201, placing the single-stage impeller of the large high-speed rotary equipment on the rotary platform of the double-column assembly measuring instrument; step S202, using the lower end face of the single-stage impeller as the reference plane and the upper end face of the single-stage impeller as the measuring plane, moving the two inductive sensors of the double-column assembly measuring instrument to the axial reference plane and the radial reference plane respectively to measure the contour information and fit the geometric axis, and then using the tilting and centering platform to make the axis of the rotary platform coincide with the geometric axis to complete the impeller shaft center alignment.

[0014] Optionally, in one embodiment of the present invention, step S2 further includes: step S203, moving the two inductive sensors of the dual-column assembly measuring instrument to the axial measuring surface and the radial measuring surface respectively to obtain the bidirectional error vector of the impeller shaft diameter.

[0015] Furthermore, in one embodiment of the present invention, step S3 specifically includes: connecting the impeller of the large high-speed rotary equipment to the balancing machine via bolts through a vertical balancing machine tool and a tool adapter plate, and obtaining the unbalance data of each stage of the impeller after presetting the balancing surface height.

[0016] Furthermore, in one embodiment of the present invention, the bidirectional error vector of the impeller shaft diameter is:

[0017]

[0018] in, The centroid error transfer matrix of the bladed disk. This is the centroid transfer matrix between the center O of the lower end face and the center O1 of the upper end face of the first-stage bladed disk. Let be the rotation transfer matrix of the coordinate system about the X-axis at position O1. Let O1 be the rotation transfer matrix of the coordinate system about the Y-axis at position O1. The rotational transfer matrix of the second-stage bladed disk about the Z-axis at the center O1 of the mating surface of the first-stage bladed disk. This is the centroid transfer matrix between the center O1 of the lower end face and the center O2 of the upper end face of the second-stage bladed disk. Let be the rotation transfer matrix of the coordinate system about the X-axis at position O2. Let be the rotation transfer matrix of the coordinate system about the Y-axis at position O2. The rotational transfer matrix of the third-stage bladed disk about the Z-axis at the center O2 of the mating surface of the second-stage bladed disk. The center O of the lower end face of the a-1th stage bladed disk a-2 and the center O of the upper end face a-1 The centroidal transfer matrix between them Let the coordinate system be about the X-axis at position O a-1 The rotation transfer matrix at that point, Let the coordinate system be about the X-axis at position O a-1 The rotation transfer matrix at that point, For the a-th stage bladed disk about the Z-axis at the center O of the mating surface of the a-1 stage bladed disk a-1 The rotation transfer matrix at that point, The center O of the lower end face of the a-th stage bladed disk a-1 and the center O of the upper end face a The centroidal transfer matrix between them, where m is a variable with a value range of {2, a}, where a is the total number of bladed disks, and V m Let V be the rotation matrix vector of the m-th stage bladed disk system, rotating about axis Z. (m-1)x The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component of V about axis X. (m-1)yThe tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, g is a variable taking values ​​in the range {2, m}, V g Let V be the rotation matrix vector of the g-th stage bladed disk system. (g-1)x The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component of V about axis X. (g-1)y The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector.

[0019] Furthermore, in one embodiment of the present invention, the imbalance data of each stage of the impeller disk is as follows:

[0020]

[0021] Among them, Q ax Let Q be the component of the unbalance of the a-th stage impeller on the X-axis. ay Let Q be the component of the unbalance of the a-th stage impeller on the Y-axis. az Let m be the component of the unbalance of the a-th stage impeller on the Z-axis. Da Let m be the mass of the a-th stage impeller, m be a variable with a value range of {2, a}, a be the total number of impellers, and V be the mass of the stage a impeller. (m-1)x The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about axis X, V (m-1)y The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, g is a variable taking values ​​in the range {2, m}, V g Let V be the rotation matrix vector of the g-th stage bladed disk system. (g-1)x The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about axis X, V (g-1)y The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector, where n is a value in the range {2, k}. b The variable k bm is the total number of blades at section b of the bladed disk. Babn Let V be the mass of the nth blade at the bth section of the a-th stage rotor. m Let m be the rotation matrix vector of the m-th stage bladed disk system. For position O a Pointing to position O Ban The position vector, For position O Ban Pointing to position E Ban The position vector, For position E Ban Pointing to position P Babn The position vector, Rotation θ around the Z-axis B Rotation matrix of angle, Here is the rotation matrix at the blade assembly position, corresponding to the tilt error rotation angle θ. p , Let θ be the rotation matrix about the coordinate axis X, and let θ be the rotation angle. dx , Let θ be the rotation matrix about the Y-axis, corresponding to a rotation angle of θ. dy , Let be the rotation matrix about the coordinate axis Y, with a corresponding rotation angle θ. dz , The eccentric position P of the bladed disk Babn Pointing to the center of mass position M Babn The position vector, For position O m-1 Pointing to position O m The position vector.

[0022] To achieve the above objectives, a second aspect of the present invention proposes a large-scale high-speed rotating equipment bladed disk assembly system based on the superposition of bidirectional shaft diameter error vectors, comprising: a parameter measurement module for measuring the geometric parameters of the bladed disk of the large-scale high-speed rotating equipment, wherein the bladed disk geometric parameters include bladed disk size parameters and bladed disk mass; an alignment and error vector measurement module for aligning the shaft center of the large-scale high-speed rotating equipment to measure the bidirectional shaft diameter error vector of the bladed disk of the large-scale high-speed rotating equipment; an unbalance measurement module for measuring the unbalance data of each stage of the large-scale high-speed rotating equipment bladed disk; an evaluation module for processing the bladed disk geometric parameters, the bidirectional shaft diameter error vector, and the unbalance data of each stage of the bladed disk according to a multi-stage bladed disk unbalance transfer model to evaluate the unbalance after multi-stage bladed disk assembly; and an optimization module for optimizing the assembly phase of the large-scale high-speed rotating equipment according to the unbalance.

[0023] The large high-speed rotary equipment bladed disk assembly system based on the superposition of shaft diameter bidirectional error vectors in this invention solves the problem that the coupling mechanism of shaft diameter bidirectional offset error directly affects the transmission process of imbalance in multi-stage bladed disks during the assembly of large high-speed rotary equipment bladed disks, and reduces the influence of imbalance in the assembly of large high-speed rotary equipment bladed disks. It can be used to guide the accurate measurement and assembly of multi-stage bladed disks.

[0024] Another embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional error vectors of shaft diameter as described in the above embodiment.

[0025] Another aspect of the present invention provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the large high-speed rotating equipment impeller assembly method based on the superposition of bidirectional shaft diameter error vectors as described in the above embodiments.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 This is a flowchart of an embodiment of the present invention of a method for assembling a large high-speed rotating equipment impeller based on the superposition of bidirectional error vectors of shaft diameter;

[0029] Figure 2 This is a schematic diagram illustrating the mutual accumulation of axial offset errors according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram illustrating the mutual accumulation of radial offset errors according to an embodiment of the present invention;

[0031] Figure 4 This is a multi-stage bladed disk blade cumulative eccentricity error propagation model according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a large high-speed rotating equipment impeller assembly system based on the superposition of bidirectional error vectors of shaft diameter, according to an embodiment of the present invention. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 the present invention, and should not be construed as limiting the present invention.

[0034] The following describes, with reference to the accompanying drawings, a method and system for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional shaft diameter error vectors according to an embodiment of the present invention. First, the method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional shaft diameter error vectors according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0035] Figure 1 This is a flowchart of a method for assembling a large high-speed rotating equipment impeller based on the superposition of bidirectional error vectors of shaft diameter, according to an embodiment of the present invention.

[0036] like Figure 1 As shown, the assembly method for large high-speed rotating equipment impeller based on the superposition of bidirectional error vectors of shaft diameter includes the following steps:

[0037] In step S1, the geometric parameters of the bladed disk of the large high-speed rotating equipment are measured, including the bladed disk size parameters and the bladed disk mass.

[0038] Furthermore, in one embodiment of the present invention, step S1 specifically includes:

[0039] Step S101: Measure the dimensions of the impeller of the large high-speed rotary equipment using a coordinate measuring machine;

[0040] Step S102: Place the impeller of the large high-speed rotating equipment in the tray at the center of the three-sensor weighing instrument to obtain the mass of the impeller.

[0041] In step S2, the impeller shaft center of the large high-speed rotary equipment is aligned to measure the bidirectional error vector of the impeller shaft diameter of the large high-speed rotary equipment.

[0042] Furthermore, in one embodiment of the present invention, step S2 specifically includes:

[0043] Step S201: Place the single-stage impeller of the large high-speed rotary equipment on the rotary platform of the double-column assembly measuring instrument.

[0044] In step S202, using the lower end face of the single-stage impeller as the reference plane and the upper end face of the single-stage impeller as the measurement plane, the two inductive sensors of the moving double-column assembly measuring instrument are placed on the axial reference plane and the radial reference plane respectively to measure the contour information and fit the geometric axis. Then, the axis of the rotary platform and the geometric axis are aligned by the tilting and centering platform to complete the impeller shaft alignment.

[0045] In step S203, the two inductive sensors of the moving double-column assembly measuring instrument are placed on the axial measuring surface and the radial measuring surface respectively to obtain the bidirectional error vector of the impeller shaft diameter.

[0046] Specifically, during the assembly of the impeller, the geometric center of the impeller assembly surface does not coincide with the axis of the rotating platform, resulting in an eccentricity error during measurement. This eccentricity error causes deviations in the radial sampling angle and the measured profile values ​​of the impeller, and also causes an axial sampling angle offset. The actual axial sampling angle offset of the impeller is expressed as follows:

[0047]

[0048] The offset of the measured radial runout of the impeller disk is expressed as follows:

[0049]

[0050] The radial sampling angle offset of the bladed disk is expressed as follows:

[0051]

[0052] Where w0 is the initial eccentricity of the rotor, w0 is the corresponding eccentricity angle, d0 is the axial fitting radius, and d′ is the axial fitting radius. 0b Let d' be the radial fitting radius. ab Let Δd be the radial fitting radius. ab For machining error, θ' a θ is the actual sampling angle along the axis. a For the ideal sampling angle along the axis, This is the actual radial sampling angle. For the ideal radial sampling angle, α w This is the corresponding eccentric angle.

[0053] During the assembly of the impeller, machining errors and assembly details can cause tilting errors, resulting in an angle between the geometric center axis of the impeller and the rotation axis of the measuring device. This tilting error causes deviations in the radial sampling angle and measured profile values, as well as deviations in the axial circumferential profile data. Therefore, the offset of the axial end face runout measurement value of the impeller is expressed as follows:

[0054]

[0055] The axial sampling angle offset of the bladed disk is expressed as follows:

[0056]

[0057] Where, θ' a θ is the actual sampling angle along the axis. a Let w'0 be the ideal axial sampling angle, w'0 be the rotor end face eccentricity, and α' be the axial ideal sampling angle.w α is the end face eccentricity angle, d0 is the sampling radius, o is the component of the direction vector on the X-coordinate axis, and α is the sampling radius. w Let p be the corresponding eccentricity angle, p be the component of the direction vector on the Y-axis, w0 be the corresponding eccentricity angle, and z be the z-axis. f Let γ be the height of the end face, γ be the inclination angle of the geometric axis, the direction vector be (o', p', q'), and β be the angle between the projection direction of the geometric axis on the measurement plane and the initial measurement direction.

[0058] Under the combined effect of eccentricity error and tilting error, the expression for the offset of the actual radial runout measurement of the rotor is:

[0059]

[0060] The expression for the actual radial sampling angle offset of the impeller disk is:

[0061]

[0062] Among them, e b and α b Let z be the eccentricity and eccentricity angle of radial section j. b Let r be the height of the radial sampling section j, the inclination angle of the geometric axis be γ, and the direction vector be (o', p', q'). lb Let r be the major axis of the elliptic projection of the sampling section. sb Let d'0 be the minor axis of the elliptic projection of the sampling section, and its size is equal to β. b The angle between the projection direction of the geometric axis onto the measurement plane and the initial measurement direction of the radial section.

[0063] Finally, as Figure 2 As shown, the axial profile runout measurement model and the actual sampling angle are as follows:

[0064]

[0065]

[0066] Finally, as Figure 3 As shown, the radial profile runout measurement model and the actual sampling angle are as follows:

[0067]

[0068]

[0069] During the assembly of the bladed disk, the centroid vector of the blade is affected by the coupled influence of the bidirectional eccentricity error of the bladed disk shaft diameter and the tilt error. The cumulative eccentricity error propagation model of multi-stage bladed disks is as follows: Figure 4As shown, the centroid transfer matrix of the nth blade in the bth layer of the rotor after the a-th stage blade separation rotor is completed is:

[0070]

[0071] Therefore, the centroid size of the nth blade in the bth layer of the a-th stage disc-blade separation rotor is:

[0072]

[0073] Furthermore, in one embodiment of the present invention, the bidirectional error vector of the impeller shaft diameter is:

[0074]

[0075] in, The centroid error transfer matrix of the bladed disk. This is the centroid transfer matrix between the center O of the lower end face and the center O1 of the upper end face of the first-stage bladed disk. Let be the rotation transfer matrix of the coordinate system about the X-axis at position O1. Let O be the rotation transfer matrix of the coordinate system about the Y-axis at position O1. The rotational transfer matrix of the second-stage bladed disk about the Z-axis at the center O1 of the mating surface of the first-stage bladed disk. This is the centroid transfer matrix between the center O1 of the lower end face and the center O2 of the upper end face of the second-stage bladed disk. Let be the rotation transfer matrix of the coordinate system about the X-axis at position O2. Let be the rotation transfer matrix of the coordinate system about the Y-axis at position O2. The rotational transfer matrix of the third-stage bladed disk about the Z-axis at the center O2 of the mating surface of the second-stage bladed disk. The center O of the lower end face of the a-1th stage bladed disk a-2 and the center O of the upper end face a-1 The centroidal transfer matrix between them Let the coordinate system be about the X-axis at position O a-1 The rotation transfer matrix at that point, Let the coordinate system be about the X-axis at position O a-1 The rotation transfer matrix at that point, For the a-th stage bladed disk about the Z-axis at the center O of the mating surface of the a-1 stage bladed disk a-1 The rotation transfer matrix at that point, The center O of the lower end face of the a-th stage bladed disk a-1 and the center O of the upper end face a The centroidal transfer matrix between them, where m is a variable with a value range of {2, a}, where a is the total number of bladed disks, V m Let V be the rotation matrix vector of the m-th stage bladed disk system, rotating about axis Z. (m-1)xThe tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about axis X, V (m-1)y The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, g is a variable taking values ​​in the range {2, m}, V g Let V be the rotation matrix vector of the g-th stage bladed disk system. (g-1)x The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about axis X, V (g-1)y The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector.

[0076] In step S3, the imbalance data of each stage of the large high-speed rotary equipment are measured.

[0077] Furthermore, in one embodiment of the present invention, step S3 specifically includes:

[0078] The impellers of large high-speed rotating equipment are connected to the balancing machine via bolts through a vertical balancing machine fixture and a fixture adapter plate. After preset the balancing surface height, the unbalance data of each stage of the impeller are obtained.

[0079] Specifically, in the bidirectional measurement expression of shaft diameter, the impeller is mainly affected by the positioning error and orientation error between the mating surfaces of each impeller. Therefore, the centroid transfer process of the a-th stage impeller during multi-stage impeller assembly is as follows:

[0080]

[0081] Therefore, the unbalance Q of the bladed disk can be obtained. a The Qa expression is:

[0082]

[0083] In the formula, m Babn Let n be the mass of the nth blade at the bth cross section of the a-th stage disk-blade separation rotor; The projection M of the center O of the first-stage bladed disk onto the centroid of the a-stage bladed disk on the X-axis. Dax Position vector; m Da The mass of the a-th stage bladed disk; The projection M of the center O of the first-stage bladed disk onto the x-axis of the centroid of the nth blade at section b of the a-stage bladed disk. Babnx Position vector; kab The total number of blades at section b of the a-th stage disk-blade separation rotor; The projection M of the center O of the first-stage bladed disk onto the mass center of the a-stage bladed disk on the Y-axis. Day The position vector; The projection M of the center O of the first-stage bladed disk onto the Y-axis, pointing from the center O to the center of mass of the nth blade at section b of the a-stage bladed disk. Babny The position vector;

[0084] Then the expression for the unbalance of each stage of the impeller is obtained as follows:

[0085]

[0086] Among them, Q ax Let Q be the component of the unbalance of the a-th stage impeller on the X-axis. ay Let Q be the component of the unbalance of the a-th stage impeller on the Y-axis. az Let m be the component of the unbalance of the a-th stage impeller on the Z-axis. Da Let m be the mass of the a-th stage impeller, m be a variable with a value range of {2, a}, a be the total number of impellers, and V be the mass of the stage a impeller. (m-1)x The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about axis X, V (m-1)y The tilting error of the m-1th stage rotor at the center O of the mating surface m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, g is a variable taking values ​​in the range {2, m}, V g Let V be the rotation matrix vector of the g-th stage bladed disk system. (g-1)x The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about axis X, V (g-1)y The tilting error of the g-1 stage rotor at the center O of the mating surface g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector, where n is a value in the range {2, k}. b The variable k b m is the total number of blades at section b of the bladed disk. Babn Let V be the mass of the nth blade at the bth section of the a-th stage rotor. m Let m be the rotation matrix vector of the m-th stage bladed disk system. For position O a Pointing to position O Ban The position vector, For position O Ban Pointing to position E BanThe position vector, For position E Ban Pointing to position P Babn The position vector, Rotation θ around the Z-axis B Rotation matrix of angle, Here is the rotation matrix at the blade assembly position, corresponding to the tilt error rotation angle θ. p , Let θ be the rotation matrix about the coordinate axis X, and let θ be the rotation angle. dx , Let θ be the rotation matrix about the Y-axis, corresponding to a rotation angle of θ. dy , Let be the rotation matrix about the coordinate axis Y, with a corresponding rotation angle θ. dz , The eccentric position P of the bladed disk Babn Pointing to the center of mass position M Babn The position vector, For position O m-1 Pointing to position O m The position vector.

[0087] In step S4, the impeller geometry parameters, impeller shaft diameter bidirectional error vector, and impeller imbalance data of each stage are processed according to the multi-stage impeller imbalance transfer model to evaluate the imbalance after multi-stage impeller assembly.

[0088] In step S5, the assembly phase of the large high-speed rotary equipment is optimized based on the imbalance.

[0089] The assembly method for large high-speed rotary equipment impeller based on the superposition of bidirectional shaft diameter error vectors proposed in the embodiments of the present invention solves the problem of the influence of bidirectional shaft diameter offset error on the contour measurement accuracy of large high-speed rotary equipment impeller during the assembly process, as well as the problem of unclear unbalance caused by the centroid transfer of each stage of the impeller during multi-stage rotor assembly. It also reduces the influence of unbalance in the assembly of large high-speed rotary equipment impeller and can be used to guide the accurate measurement and assembly of multi-stage impellers.

[0090] Next, referring to the accompanying drawings, a large high-speed rotating equipment impeller assembly system with bidirectional error vector superposition of shaft diameter proposed according to an embodiment of the present invention is described.

[0091] Figure 5 This is a schematic diagram of the structure of a large high-speed rotating equipment impeller assembly system based on the superposition of bidirectional error vectors of shaft diameter, according to an embodiment of the present invention.

[0092] like Figure 5 As shown, the system 10 includes: a parameter measurement module 100, an alignment and error vector measurement module 200, an unbalance measurement module 300, an evaluation module 400, and an optimization module 500.

[0093] The system includes the following modules: Parameter Measurement Module 100 measures the geometric parameters of the impeller of the large high-speed rotating equipment, including impeller dimensions and mass. Alignment and Error Vector Measurement Module 200 aligns the impeller shaft center of the large high-speed rotating equipment to measure the bidirectional error vector of the impeller shaft diameter. Unbalance Measurement Module 300 measures the unbalance data of each stage of the large high-speed rotating equipment's impellers. Evaluation Module 400 processes the impeller geometric parameters, bidirectional error vector of the impeller shaft diameter, and unbalance data of each stage of the impeller according to a multi-stage impeller unbalance transfer model to evaluate the unbalance after multi-stage impeller assembly. Optimization Module 500 optimizes the assembly phase of the large high-speed rotating equipment based on the unbalance.

[0094] It should be noted that the foregoing explanation of the embodiment of the assembly method of large high-speed rotating equipment bladed disk based on the superposition of bidirectional error vectors of shaft diameter also applies to the system of this embodiment, and will not be repeated here.

[0095] The large high-speed rotary equipment bladed disk assembly system based on the superposition of two-way shaft diameter error vectors proposed in the embodiments of the present invention solves the problem of the influence of two-way shaft diameter offset error on the contour measurement accuracy of large high-speed rotary equipment bladed disks during the assembly process, as well as the problem of unclear unbalance caused by the centroid transfer of each stage of the bladed disk during multi-stage rotor assembly. It also reduces the influence of unbalance in the assembly of large high-speed rotary equipment bladed disks and can be used to guide the accurate measurement and assembly of multi-stage bladed disks.

[0096] To achieve the above embodiments, the present invention also proposes a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the large high-speed rotating equipment impeller assembly method based on the superposition of bidirectional error vectors of shaft diameter as described in the foregoing embodiments.

[0097] To implement the above embodiments, the present invention also proposes a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the large high-speed rotating equipment impeller assembly method based on the superposition of bidirectional error vectors of shaft diameter as described in the foregoing embodiments.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0100] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of the invention pertain.

[0101] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0102] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0103] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0104] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0105] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for assembling a large high-speed rotating equipment impeller based on the superposition of bidirectional error vectors in shaft diameter, characterized in that, Includes the following steps: Step S1: Measure the geometric parameters of the bladed disk of the large high-speed rotating equipment, wherein the geometric parameters of the bladed disk include the bladed disk size parameters and the bladed disk mass; Step S2: Align the bladed disk shaft center of the large high-speed rotating equipment to measure the bidirectional error vector of the bladed disk shaft diameter of the large high-speed rotating equipment. Step S3: Measure the imbalance data of each stage of the large high-speed rotary equipment. Step S4: Process the geometric parameters of the impeller, the bidirectional error vector of the impeller shaft diameter, and the unbalance data of each stage of the impeller according to the multi-stage impeller unbalance transfer model to evaluate the unbalance after the multi-stage impeller assembly. Step S5: Optimize the assembly phase of the large high-speed rotary equipment based on the imbalance. The bidirectional error vector of the impeller shaft diameter is: in, The centroid error transfer matrix of the bladed disk. Center of the lower end face of the first-stage bladed disk O and the center of the upper end face O The centroidal transfer matrix between 1 and 2 The coordinate system is positioned about the X-axis. O The rotation transfer matrix at position 1, The coordinate system is positioned around the Y-axis at position O The rotation transfer matrix at position 1, The second-stage bladed disk is located around the Z-axis at the center of the mating surface of the first-stage bladed disk. O The rotation transfer matrix at position 1, Center of the lower end face of the second-stage bladed disk O 1 and the center of the upper end face O The centroidal transfer matrix between 2, The coordinate system is positioned about the X-axis. O The rotation transfer matrix at point 2, The coordinate system is positioned around the Y-axis at position O The rotation transfer matrix at point 2, The third-stage bladed disk is located around the Z-axis at the center of the mating surface of the second-stage bladed disk. O The rotation transfer matrix at point 2, For the first a-1 Center of the lower end face of the bladed disk O a-2 and the center of the upper end face O a-1 The centroidal transfer matrix between them The coordinate system is positioned about the X-axis. O a-1 The rotation transfer matrix at that point, The coordinate system is positioned about the X-axis. O a-1 The rotation transfer matrix at that point, For the first a The first stage blade disk rotates around the Z-axis at the first a-1 Center of the mating surface of the stage bladed disk O a-1 The rotation transfer matrix at that point, For the first a Center of the lower end face of the bladed disk O a-1 and the center of the upper end face O a The centroidal transfer matrix between them Let a be a variable, and let its value range be {2, a}. This represents the total number of bladed discs. Let be the rotation matrix vector of the m-th stage bladed disk system, rotating about axis Z. The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about axis X, The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, For a variable whose value range is {2, m}, Let g be the rotation matrix vector of the g-th stage bladed disk system. The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about axis X, The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector.

2. The method for assembling large high-speed rotating equipment bladed disks based on the superposition of bidirectional error vectors of shaft diameter as described in claim 1, characterized in that, Step S1 specifically includes: Step S101: Measure the dimensions of the impeller of the large high-speed rotary equipment using a coordinate measuring machine; Step S102: Place the impeller of the large high-speed rotating equipment in the tray at the center of the three-sensor weighing instrument to obtain the mass of the impeller.

3. The method for assembling large high-speed rotating equipment bladed disks based on the superposition of bidirectional error vectors of shaft diameter as described in claim 1, characterized in that, Step S2 specifically includes: Step S201: Place the single-stage impeller of the large high-speed rotary equipment on the rotary platform of the double-column assembly measuring instrument. Step S202: Using the lower end face of the single-stage impeller as the reference plane and the upper end face of the single-stage impeller as the measurement plane, move the two inductive sensors of the double-column assembly measuring instrument to the axial reference plane and the radial reference plane respectively to measure the contour information and fit the geometric axis. Then, use the tilting and centering platform to make the axis of the rotary platform coincide with the geometric axis to complete the impeller shaft center alignment.

4. The method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional shaft diameter error vectors according to claim 3, characterized in that, Step S2 further includes: Step S203: Move the two inductive sensors of the dual-column assembly measuring instrument to the axial measuring surface and the radial measuring surface respectively to obtain the bidirectional error vector of the impeller shaft diameter.

5. The method for assembling large high-speed rotating equipment bladed disks based on the superposition of bidirectional error vectors of shaft diameter according to claim 1, characterized in that, Step S3 specifically includes: The impellers of the large high-speed rotary equipment are connected to the balancing machine via bolts through a vertical balancing machine fixture and a fixture adapter plate. After setting the balancing surface height, the unbalance data of each stage of the impeller are obtained.

6. The method for assembling large high-speed rotating equipment bladed disks based on the superposition of bidirectional error vectors of shaft diameter according to claim 1, characterized in that, The imbalance data for each stage of the impeller disk are as follows: in, Let be the component of the unbalance of the a-th stage impeller on the X-axis. This represents the Y-axis component of the unbalance of the a-th stage impeller. Let be the component of the unbalance of the a-th stage impeller on the Z-axis. For the mass of the a-th stage bladed disk, Let a be a variable, and let its value range be {2, a}. This represents the total number of bladed discs. The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about axis X, The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, For a variable whose value range is {2, m}, Let g be the rotation matrix vector of the g-th stage bladed disk system. The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about axis X, The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector, The range of values ​​is {2, } variables, For the first leaf disc b Total number of blades in cross section For the first a Stage rotor b Section 1 n Leaf weight Let m be the rotation matrix vector of the m-th stage bladed disk system. For position O a Pointing to position O Ban The position vector, For position O Ban Pointing to position E Ban The position vector, For position E Ban Pointing to position P Babn The position vector, Rotation around the Z-axis The rotation matrix of the angle. Here is the rotation matrix at the blade assembly position, corresponding to the tilt error rotation angle as follows: , Let be the rotation matrix about the coordinate axis X, and let be the corresponding rotation angle. , Let be the rotation matrix about the Y-axis, and let be the corresponding rotation angle. , Let be the rotation matrix about the Y-axis, and let be the rotation angle. , Off-center position of the bladed disk P Babn Pointing to the center of mass M Babn The position vector, For position O m-1 Pointing to position O m The position vector.

7. A large-scale high-speed rotating equipment impeller assembly system based on the superposition of bidirectional error vectors of shaft diameter, characterized in that, include: The parameter measurement module is used to measure the geometric parameters of the bladed disk of large high-speed rotating equipment, wherein the geometric parameters of the bladed disk include bladed disk size parameters and bladed disk mass; The alignment and error vector measurement module is used to align the bladed disk shaft center of the large high-speed rotating equipment in order to measure the bidirectional error vector of the bladed disk shaft diameter of the large high-speed rotating equipment. The unbalance measurement module is used to measure the unbalance data of each stage of the large high-speed rotary equipment. The evaluation module is used to process the geometric parameters of the impeller, the bidirectional error vector of the impeller shaft diameter, and the unbalance data of each impeller stage according to the multi-stage impeller unbalance transfer model, so as to evaluate the unbalance after the multi-stage impeller is assembled. An optimization module is used to optimize the assembly phase of the large high-speed rotary equipment based on the imbalance. The bidirectional error vector of the impeller shaft diameter is: in, The centroid error transfer matrix of the bladed disk. Center of the lower end face of the first-stage bladed disk O and the center of the upper end face O The centroidal transfer matrix between 1 and 2 The coordinate system is positioned about the X-axis. O The rotation transfer matrix at position 1, The coordinate system is positioned around the Y-axis at position O The rotation transfer matrix at position 1, The second-stage bladed disk is located around the Z-axis at the center of the mating surface of the first-stage bladed disk. O The rotation transfer matrix at position 1, Center of the lower end face of the second-stage bladed disk O 1 and the center of the upper end face O The centroidal transfer matrix between 2, The coordinate system is positioned about the X-axis. O The rotation transfer matrix at point 2, The coordinate system is positioned around the Y-axis at position O The rotation transfer matrix at point 2, The third-stage bladed disk is located around the Z-axis at the center of the mating surface of the second-stage bladed disk. O The rotation transfer matrix at point 2, For the first a-1 Center of the lower end face of the bladed disk O a-2 and the center of the upper end face O a-1 The centroidal transfer matrix between them The coordinate system is positioned about the X-axis. O a-1 The rotation transfer matrix at that point, The coordinate system is positioned about the X-axis. O a-1 The rotation transfer matrix at that point, For the first a The first stage blade disk rotates around the Z-axis at the first a-1 Center of the mating surface of the stage bladed disk O a-1 The rotation transfer matrix at that point, For the first a Center of the lower end face of the bladed disk O a-1 and the center of the upper end face O a The centroidal transfer matrix between them Let a be a variable, and let its value range be {2, a}. This represents the total number of bladed discs. Let be the rotation matrix vector of the m-th stage bladed disk system, rotating about axis Z. The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about axis X, The rotor tilt error of the (m-1)th stage is at the center of the mating surface. O m-1 The rotational component about the Y-axis at that point. For position O a-1 Pointing to position O a The position vector, For a variable whose value range is {2, m}, Let g be the rotation matrix vector of the g-th stage bladed disk system. The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about axis X, The tilting error of the g-1 stage rotor at the center of the mating surface O g-1 The rotational component about the Y-axis at that point. For position O m-1 Pointing to position O m The position vector.

8. A computer device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional error vectors of shaft diameter as described in any one of claims 1-6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for assembling large high-speed rotating equipment impellers based on the superposition of bidirectional error vectors of shaft diameter as described in any one of claims 1-6.

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