Displacement sensor centering device for measuring high-temperature deformation of turbine stator component

Abstract

The invention discloses a displacement sensor centering device for measuring high-temperature deformation of a turbine stator part. The displacement sensor centering device comprises a table piece, a centering base supporting block, a centering base and a sensor mounting frame. A through central large hole is formed in the center of the table piece, and an inner ring small hole and an outer ring small hole are coaxially formed in the center of the table piece. The centering base supporting block is circumferentially fixed to the outer ring small hole, the inner ring surface of the centering base supporting block is in forced fit with the matching face of the centering base base, and the centering function is achieved. An inner wall displacement sensor mounting hole is formed in the circumferential direction of a cylinder of the centering base, and a sensor vertically points to an inner wall measuring point of the turbine stator component; the sensor mounting rack is correspondingly provided with an outer wall displacement sensor mounting hole, and synchronously collects inner and outer wall deformation data of the stator part with the inner wall sensor. According to the device, the centering precision is guaranteed through forced fitting and limiting of the centering base supporting block and the centering base, the displacement sensors on the inner wall and the outer wall are cooperatively arranged, precise and synchronous measurement of high-temperature deformation of the turbine stator component is achieved, and the stability and accuracy of deformation detection in the high-temperature environment are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of high-temperature deformation measurement equipment, and in particular to a displacement sensor centering device for measuring the high-temperature deformation of turbine stator components. Background Technology

[0002] In the field of aero-engine development, the turbine stator, as a core load-bearing component, directly affects the accuracy of rotor blade tip clearance control due to its radial deformation under high-temperature conditions, thus determining the engine's aerodynamic efficiency and safety margin. Currently, the measurement of high-temperature deformation of turbine stator components suffers from insufficient centering accuracy. Traditional measuring devices often employ split positioning structures, such as independent support frames and sensor brackets, where accumulated assembly errors lead to misalignment between the measurement reference and the stator component's axis. During high-temperature testing, the thermal expansion of the turbine stator component amplifies this deviation, resulting in inaccurate data on inner and outer wall deformation. Therefore, developing a device with centering capabilities and simultaneous acquisition of inner and outer wall deformation is of practical significance. Summary of the Invention

[0003] This invention provides a displacement sensor centering device for measuring the high-temperature deformation of turbine stator components. The centering accuracy is ensured by the forced fit and limiting of the centering base support block and the centering base. The inner and outer wall displacement sensors are arranged in a coordinated manner to achieve accurate and synchronous measurement of the high-temperature deformation of the turbine stator components, effectively improving the stability and accuracy of deformation detection under high-temperature conditions.

[0004] This invention provides a displacement sensor centering device for measuring the high-temperature deformation of a turbine stator component, comprising: a table, a centering base, a sensor mounting bracket, and a centering base support block;

[0005] The table component is fixed to the ground by anchor bolts, and has a central through hole, with inner and outer small holes arranged coaxially around the central through hole;

[0006] The centering base includes a centering base base and a centering base column. The edge of the centering base base is machined into a centering matching surface that is adapted to the centering guide surface on the centering base support block. When the centering base passes through the central large hole of the table component, the two surfaces are forcibly fitted to achieve centering. The centering base column has multiple mounting holes for the outer ring inner wall displacement sensors of the turbine stator component in the circumferential direction. The outer ring inner wall displacement sensors are perpendicular to the measuring points on the inner wall of the turbine stator component and are used to collect deformation data of the outer ring inner wall surface of the turbine stator component.

[0007] The sensor mounting bracket is fixed on the small hole on the outer ring of the table component. The sensor mounting bracket is provided with a displacement sensor mounting hole for the outer wall of the turbine stator component. The outer wall displacement sensor mounting hole corresponds to the inner wall displacement sensor mounting hole of the outer ring of the turbine stator component in spatial position, forming a coaxial measurement group. The outer wall displacement sensor is used to collect deformation data of the outer wall of the turbine stator component.

[0008] The centering base support blocks are evenly distributed around the circumference and fixed to the small holes on the outer ring of the table piece. The inner surface is machined into a centering guide surface that matches the centering matching surface on the outer edge of the centering base.

[0009] Optionally, in one embodiment of the present invention, the inner ring small hole of the table component is used to install the turbine stator component, and the axis of the inner ring small hole, the axis of the outer ring small hole, and the axis of the central large hole of the table component are coaxial.

[0010] Optionally, in one embodiment of the present invention, the centering guide surface on the centering base support block is in close engagement with the centering matching surface on the outer edge of the centering base.

[0011] Optionally, in one embodiment of the present invention, the axis of the mounting hole of the displacement sensor on the inner wall of the outer ring of the turbine stator component is perpendicular to the measured point on the inner wall of the outer ring of the turbine stator component, the axis of the mounting hole of the displacement sensor on the outer wall of the turbine stator component casing is perpendicular to the measured point on the outer wall of the turbine stator component casing, and the axes of the mounting holes of the outer wall displacement sensor and the inner wall displacement sensor on the same radial section coincide.

[0012] Optionally, in one embodiment of the present invention, the sensor mounting bracket is provided with a displacement sensor mounting hole on the outer wall of the turbine stator component casing. The axis of the displacement sensor mounting hole is perpendicular to the measured point on the outer wall of the turbine stator component casing, and forms a coaxial measurement group with the displacement sensor on the inner wall of the outer ring of the turbine stator component on the centering base.

[0013] Optionally, in one embodiment of the present invention, when the centering base passes through the central large hole of the table component and performs a centering action, the centering matching surface and the centering guide surface on the centering base support block form a mechanical constraint fit. Through the positioning and limiting relationship between the centering matching surface and the centering guide surface, the centering base is accurately positioned in a preset spatial position.

[0014] The displacement sensor centering device for measuring the high-temperature deformation of turbine stator components in this invention ensures centering accuracy through the forced fit and limiting of the centering base support block and the centering base. The inner and outer wall displacement sensors are arranged in a coordinated manner to achieve accurate and synchronous measurement of the high-temperature deformation of the turbine stator components, effectively improving the stability and accuracy of deformation detection under high-temperature conditions.

[0015] 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

[0016] 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:

[0017] Figure 1 This is a schematic diagram of a displacement sensor centering device for measuring the high-temperature deformation of a turbine stator component according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the disassembly structure of a displacement sensor centering device for measuring the high-temperature deformation of a turbine stator component according to an embodiment of the present invention;

[0019] Figure 3 A schematic diagram showing the spatial positions of the centering base, the centering base support block, and the table component provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the table component structure provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of a centering base structure provided in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the sensor mounting bracket structure provided in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the centering base support block structure provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1-Table component; 2-Centering base; 3-Sensor mounting bracket; 4-Centering base support block; 5-Displacement sensor; 6-Outer ring of turbine stator component; 7-Turbine stator component casing; 1a-Outer ring small hole; 1b-Inner ring small hole; 1c-Central large hole; 2a-Centering base base; 2b-Centering base column; 2c-Displacement sensor mounting hole on the inner wall of the outer ring; 2d-Centering matching surface; 3a-Displacement sensor mounting hole on the outer wall of the casing; 4a-Centering guide surface. Detailed Implementation

[0025] 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.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the displacement sensor centering device for measuring the high-temperature deformation of the turbine stator component includes: a table 1, a centering base 2, a sensor mounting bracket 3, and a centering base support block 4.

[0027] like Figure 4 As shown, table component 1 serves as the basic load-bearing structure, fixed to the ground by anchor bolts, and is used to install and support other components of the device. A central through-hole 1c is provided in the center of table component 1, through which the centering base fits. Two concentric rings of precision holes are arranged coaxially around the central through-hole 1c: an inner ring of small holes 1b and an outer ring of small holes 1a. The inner ring of small holes 1b is used to install turbine stator components, and the outer ring of small holes 1a is used to install functional components such as the centering base support block 4 and the sensor mounting bracket 3.

[0028] like Figure 5 As shown, the centering base 2 includes a centering base 2a and a centering base column 2b. The edge of the centering base 2a is machined into a centering matching surface 2d that is adapted to the centering guide surface 4a on the centering base support block 4. When the centering base 2 passes through the central large hole 1c of the table component 1, the centering matching surface 2d on the outer edge of the centering base 2a is forcibly fitted with the centering guide surface 4a on the inner ring of the centering base support block 4 to achieve precise centering. The centering base column 2b has multiple outer ring inner wall displacement sensor mounting holes 2c of the turbine stator component circumferentially. The displacement sensor 5 of the outer ring inner wall is perpendicularly pointed to the measuring point on the inner wall of the turbine stator component and is used to collect deformation data of the outer ring inner wall surface of the turbine stator component.

[0029] like Figure 6 As shown, the sensor mounting bracket 3 is fixed on the small hole 1a on the outer ring of the table component 1. The sensor mounting bracket 3 has mounting holes for displacement sensors 3a on the outer wall of the turbine stator component casing. The number and position of these holes correspond one-to-one with the measuring points on the outer wall of the turbine stator component casing 7. The mounting holes 3a on the outer wall of the casing correspond spatially to the mounting holes 2c on the inner wall of the outer ring of the turbine stator component, forming a coaxial measurement group. The displacement sensor 5 on the outer wall of the casing is used to collect deformation data of the outer wall of the turbine stator component casing.

[0030] like Figure 7 As shown, the centering base support blocks 4 are evenly distributed around the circumference and fixed to the outer ring small holes 1a of the table part 1 by bolts. The inner surface is machined into a centering guide surface 4a that matches the centering matching surface 2d on the outer edge of the centering base 2a.

[0031] In an embodiment of the present invention, the inner ring small hole 1b of the table component 1 is used to install the turbine stator component, and the axis of the inner ring small hole of the table component 1, the axis of the outer ring small hole of the table component 1, and the axis of the central large hole of the table component 1 are coaxial.

[0032] In an embodiment of the present invention, the centering guide surface 4a on the centering base support block 4 is in close contact with the centering matching surface 2d on the outer edge of the centering base 2a.

[0033] In an embodiment of the present invention, the axis of the mounting hole 2c of the displacement sensor on the inner wall of the outer ring of the turbine stator component is perpendicular to the measured point on the inner wall of the outer ring of the turbine stator component, and the axis of the mounting hole 3a of the displacement sensor on the outer wall of the turbine stator component casing 7 is perpendicular to the measured point on the outer wall of the turbine stator component casing 7. Furthermore, the axes of the mounting holes of the casing outer wall displacement sensor and the outer ring inner wall displacement sensor on the same radial section coincide.

[0034] In an embodiment of the present invention, the sensor mounting bracket 3 is provided with a displacement sensor mounting hole 3a on the outer wall of the turbine stator component casing. The axis of the displacement sensor mounting hole 3a is perpendicular to the measured point on the outer wall of the turbine stator component casing, and forms a coaxial measurement group with the displacement sensor on the inner wall of the outer ring of the turbine stator component on the centering base 2.

[0035] In an embodiment of the present invention, when the centering base 2 passes through the central large hole 1c of the table component 1 and performs a centering action, the centering matching surface 2d and the centering guide surface 4a on the centering base support block 4 form a mechanical constraint fit. Through the positioning and limiting relationship between the centering matching surface 2d and the centering guide surface 4d, the centering base 2 is accurately positioned in the preset spatial position.

[0036] Understandably, the centering base is the core component for the centering function of the device, and its overall shape is a square columnar structure with a base. The outer edge of the base has a centering mating surface that matches the centering guide surface of the centering base support block, providing a supportive fit. This surface contact creates a mechanical constraint, ensuring the coaxiality of the centering base and the central hole of the table component. When the centering base passes through the central hole of the table component and performs the centering action, the centering mating surface and the centering guide surface on the centering base support block form a mechanical constraint, and through the positioning and limiting relationship between them, the centering base is precisely positioned in the preset spatial location. The square column structure of the centering base is provided with displacement sensor mounting holes on the circumference for detecting the deformation of the inner surface of the outer ring of the turbine stator component. The size, number and distribution of the displacement sensor mounting holes are adapted to the displacement sensor on the inner wall of the outer ring of the turbine stator component to be installed, so as to ensure that after the displacement sensor is installed, its detection end can be accurately aligned with the preset detection area on the inner surface of the outer ring of the turbine stator component, so as to collect the deformation data of the inner surface of the outer ring when the turbine stator component is deformed in a high temperature environment.

[0037] The sensor mounting bracket is used to install displacement sensors for detecting deformation of the outer surface of the turbine stator component casing. The sensor mounting bracket is distributed circumferentially along the centering base and is installed by mating with the outer ring of small holes circumferentially formed around the central large hole on the table component. The sensor mounting bracket has displacement sensor mounting holes for detecting deformation of the outer surface of the turbine stator component casing. The size, number, and distribution of these mounting holes are adapted to the displacement sensors on the outer surface of the turbine stator component casing to be installed, ensuring that after installation, the detection end of the displacement sensor can be accurately aligned with the preset detection area on the outer surface of the turbine stator component casing. This, together with the displacement sensors on the inner wall of the outer ring of the turbine stator component mounted on the centering base, forms a coordinated measurement of the deformation of the inner and outer sides of the turbine stator component.

[0038] The centering base support block is a functional component adapted to the table component and the centering base. It is assembled one-to-one with the outer ring of small holes circumferentially opened around the central large hole of the table component. When the centering base passes through the central large hole of the table component, the centering guide surface on the centering base support block forms a mating relationship with the centering base by limiting and constraining the centering matching surface on the outer edge of the centering base, thus completing the centering function.

[0039] During the assembly stage, the turbine stator component is fixed to the small hole in the inner ring of the table component, with its axis aligned with the large hole in the center of the table component; the centering base passes vertically through the large hole in the center of the table component, and the centering matching surface on the outer edge of the centering base cooperates with the centering guide surface of the centering base supporting the inner ring to complete the centering; the displacement sensors on the outer side of the turbine stator component casing and the inner wall of the outer ring of the turbine stator component are respectively installed in the casing displacement sensor mounting hole and the outer ring displacement sensor mounting hole, and calibrated to the preset measurement point for high temperature deformation of the turbine stator component.

[0040] During the measurement phase, when the turbine stator component is deformed by heat, the radial displacement is synchronously collected by the displacement sensors on the outer side of the turbine stator component casing and the inner wall of the outer ring of the turbine stator component to generate a coordinated deformation map.

[0041] The displacement sensor centering device for measuring the high-temperature deformation of turbine stator components proposed in this embodiment of the invention ensures centering accuracy through the forced fit and limiting of the centering base support block and the centering base. The inner and outer wall displacement sensors are arranged in a coordinated manner to achieve accurate and synchronous measurement of the high-temperature deformation of the turbine stator components, effectively improving the stability and accuracy of deformation detection under high-temperature conditions.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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.

[0043] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A displacement sensor centering device for measuring the high-temperature deformation of a turbine stator component, characterized in that, include: Table components, centering base, sensor mounting bracket, and centering base support block; The table component is fixed to the ground by anchor bolts, and has a central through hole, with inner and outer small holes arranged coaxially around the central through hole; The centering base includes a centering base base and a centering base column. The edge of the centering base base is machined into a centering matching surface that is adapted to the centering guide surface on the centering base support block. When the centering base passes through the central large hole of the table component, the two surfaces are forcibly fitted to achieve centering. The centering base column has multiple mounting holes for the outer ring inner wall displacement sensors of the turbine stator component in the circumferential direction. The outer ring inner wall displacement sensors are perpendicular to the measuring points on the inner wall of the turbine stator component and are used to collect deformation data of the outer ring inner wall surface of the turbine stator component. The sensor mounting bracket is fixed on the small hole on the outer ring of the table component. The sensor mounting bracket is provided with a displacement sensor mounting hole for the outer wall of the turbine stator component. The outer wall displacement sensor mounting hole corresponds to the inner wall displacement sensor mounting hole of the outer ring of the turbine stator component in spatial position, forming a coaxial measurement group. The outer wall displacement sensor is used to collect deformation data of the outer wall of the turbine stator component. The centering base support blocks are evenly distributed around the circumference and fixed to the small holes on the outer ring of the table piece. The inner surface is machined into a centering guide surface that matches the centering matching surface on the outer edge of the centering base.

2. The apparatus according to claim 1, characterized in that, The inner ring of the table component has small holes for mounting turbine stator components, and the axes of the inner ring small holes and the outer ring small holes of the table component are coaxial with the axis of the central large hole.

3. The apparatus according to claim 1, characterized in that, The centering guide surface on the centering base support block is in close contact with the centering matching surface on the outer edge of the centering base.

4. The apparatus according to claim 1, characterized in that, The axis of the mounting hole for the displacement sensor on the inner wall of the outer ring of the turbine stator component is perpendicular to the measured point on the inner wall of the outer ring of the turbine stator component. The axis of the mounting hole for the displacement sensor on the outer wall of the turbine stator component casing is perpendicular to the measured point on the outer wall of the turbine stator component casing. Furthermore, the axes of the mounting holes for the outer wall displacement sensor and the inner wall displacement sensor on the outer ring of the casing coincide on the same radial section.

5. The apparatus according to claim 1, characterized in that, The sensor mounting bracket is provided with a displacement sensor mounting hole on the outer wall of the turbine stator component casing. The axis of the displacement sensor mounting hole is perpendicular to the measured point on the outer wall of the turbine stator component casing, and forms a coaxial measurement group with the displacement sensor on the inner wall of the outer ring of the turbine stator component on the centering base.

6. The apparatus according to claim 1, characterized in that, When the centering base passes through the central hole of the table component and performs the centering action, the centering matching surface and the centering guide surface on the centering base support block form a mechanical constraint fit. Through the positioning and limiting relationship between the centering matching surface and the centering guide surface, the centering base is accurately positioned in the preset spatial position.

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