Rod-shaped object run-out measuring device, fuel rod run-out measuring system and fuel rod run-out measuring method

Abstract

The invention discloses a device and a method for measuring jumping of a rod-shaped object and a system and a method for measuring jumping of a fuel rod, and belongs to the technical field of quality detection. The measuring device comprises a data acquisition module, a mechanical rotation module, a supporting module, a positioning module and a data processing and display module, the supporting module is used for supporting the horizontal placement of the rod-shaped object, and the positioning module is used for pushing the to-be-detected end part of the rod-shaped object to a working distance of the data acquisition module; the mechanical rotating module is used for clamping and driving the rod-shaped object to rotate on the supporting module along the axial direction, the data acquisition module is used for acquiring data of an end part to be detected of the rod-shaped object in a rotating state, and the data processing and displaying module is used for analyzing the data of the end part to be detected of the rod-shaped object and calculating a jumping value of the rod-shaped object. The device can solve the problems of low measurement efficiency, low measurement result accuracy and quality risk in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of quality detection, and in particular relates to a device and method for measuring the vibration of a rod-shaped object, and a system and method for measuring the vibration of a fuel rod. Background Art

[0002] Currently, measuring the runout of fuel rods is a quality control requirement of nuclear fuel plants to measure the end plug processing quality and end plug welding quality of the fuel rods.

[0003] In the existing production line, the fuel rod runout (including axial runout and / or radial runout) is measured using a semi-automatic contact method of a coaxiality measuring instrument. The specific method is to place the fuel rod on a rotating measuring platform, manually contact the measuring end of the coaxiality measuring instrument with the end face to be inspected and / or the circumferential face to be inspected of the fuel rod, manually roll the fuel rod, and manually observe the difference between the maximum and minimum values ​​displayed by the coaxiality measuring instrument, which is the axial runout value and / or radial runout value of the fuel rod. This measurement method not only has low measurement efficiency, but also has a small number of measurement points, which affects the accuracy of the measurement results. In addition, the contact measurement method has the risk of causing surface damage to the fuel rod, thereby affecting the quality of the fuel rod. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for measuring the vibration of a rod-shaped object, and a system and method for measuring the vibration of a fuel rod, in view of the above-mentioned deficiencies in the prior art. The device and method can realize non-contact automatic measurement of the vibration of the fuel rod to improve the measurement efficiency, and the measurement result has high accuracy.

[0005] In a first aspect, the present invention provides a device for measuring the vibration of a rod-shaped object, comprising a data acquisition module, a mechanical rotation module, a support module, a positioning module, and a data processing and display module.

[0006] The support module is used to support the horizontal placement of the rod-like object. The positioning module is used to push the end of the rod-like object to be inspected into the working distance of the data acquisition module. The mechanical rotation module is used to clamp and drive the rod-like object to rotate axially on the support module. The data acquisition module is used to collect the data of the end of the rod-like object to be inspected in a rotating state. The data processing and display module is electrically connected to the data acquisition module, and is used to analyze the data of the end of the rod-like object to be inspected and calculate the runout value of the rod-like object.

[0007] Preferably, the measuring device further comprises a motion control module. The motion control module is electrically connected to the mechanical rotation module and the positioning module, and is used to control the clamping action and the rotation action of the mechanical rotation module, and is used to control the pushing action of the positioning module.

[0008] Preferably, the data acquisition module comprises a non-contact three-dimensional measuring instrument. The three-dimensional measuring instrument comprises any one of the following: a laser displacement sensor, a laser profile scanner, and a spectral confocal sensor.

[0009] Preferably, the mechanical rotation module comprises a rotary encoder, and the rotary encoder is electrically connected to the data acquisition module and is used to trigger the data acquisition module to uniformly collect the data of the end to be inspected of the rod-shaped object in a rotating state.

[0010] Preferably, the support module adopts one of the following structures: a V-shaped groove, a square groove, and an arc groove.

[0011] Preferably, the positioning module is used to push the end face of the end of the rod-shaped object to be inspected into the working distance of the data acquisition module, the data acquisition module is used to collect the end face data of the end of the rod-shaped object to be inspected in a rotating state, and the data processing and display module is used to analyze the end face data of the end of the rod-shaped object to be inspected and calculate the axial runout value of the rod-shaped object.

[0012] And / or, the positioning module is used to push the circumferential surface of the end of the rod-shaped object to be inspected into the working distance of the data acquisition module, the data acquisition module is used to collect the circumferential surface data of the end of the rod-shaped object to be inspected in a rotating state, and the data processing and display module is used to analyze the circumferential surface data of the end of the rod-shaped object to be inspected and calculate the radial runout value of the rod-shaped object.

[0013] Preferably, the data acquisition module includes a linear array three-dimensional measuring instrument.

[0014] When the linear array three-dimensional measuring instrument is used to collect end surface data of the end portion to be inspected of the rod-shaped object in a rotating state, the measuring line direction of the linear array three-dimensional measuring instrument is perpendicular to the axial direction of the rod-shaped object.

[0015] When the linear array three-dimensional measuring instrument is used to collect peripheral surface data of the end portion to be inspected of a rod-shaped object in a rotating state, the measuring line direction of the linear array three-dimensional measuring instrument is parallel to the axial direction of the rod-shaped object.

[0016] In a second aspect, the present invention further provides a fuel rod runout measurement system, comprising the rod runout measurement device described in the first aspect. The rod runout measurement device is used to measure the axial runout value and / or radial runout value of the fuel rod.

[0017] In a third aspect, the present invention also provides a method for measuring the vibration of a rod-like object, comprising: pushing the end of the rod-like object to be inspected into the working distance of a data acquisition instrument; clamping and driving the rod-like object to rotate axially; collecting data of the end of the rod-like object to be inspected in a rotating state; and calculating the vibration value of the rod-like object based on the data of the end of the rod-like object to be inspected.

[0018] Preferably, the end includes an end face, and the run-out value includes an axial run-out value. The collecting of the end data to be inspected of the rod-shaped object in a rotating state specifically includes: collecting the end face data of the end to be inspected of the rod-shaped object in a rotating state. The calculating of the run-out value of the rod-shaped object based on the end data to be inspected of the rod-shaped object specifically includes: calculating the axial run-out value of the rod-shaped object based on the end face data of the end to be inspected of the rod-shaped object.

[0019] And / or, the end includes a circumferential surface, and the run-out value includes a radial run-out value. The collecting of the end data of the rod-shaped object to be inspected in a rotating state specifically includes: collecting the circumferential surface data of the end of the rod-shaped object to be inspected in a rotating state. The calculating of the run-out value of the rod-shaped object based on the end data of the rod-shaped object to be inspected specifically includes: calculating the radial run-out value of the rod-shaped object based on the circumferential surface data of the end of the rod-shaped object to be inspected.

[0020] In a fourth aspect, the present invention further provides a method for measuring fuel rod runout, comprising: using the rod-shaped object runout measurement method described in the third aspect to measure the axial runout value and / or radial runout value of the fuel rod.

[0021] The present invention provides a measuring device and method for the vibration of a rod-shaped object, and a measuring system and method for the vibration of a fuel rod. The positioning module is used to automatically push the end of the rod-shaped object to be inspected into the working distance of the data acquisition module, so that the end to be inspected and the data acquisition module are in a non-contact state, thereby avoiding the risk of surface damage to the rod-shaped object caused by contact detection. The mechanical rotation module is used to clamp and drive the rod-shaped object to rotate axially on the support module, replacing the manual rolling of the rod-shaped object to improve the measurement efficiency. The data acquisition module is used to automatically collect the data of the end to be inspected of the rod-shaped object in a rotating state, and can obtain more collected data based on the control collection cycle, thereby improving the accuracy of the measurement results. The data processing and display module is used to display the calculated vibration value of the rod-shaped object, replacing the manual observation and calculation of the measurement results, thereby improving the measurement efficiency. In short, non-contact automatic measurement of the vibration of the rod-shaped object can be achieved to improve the measurement efficiency, and the measurement results are highly accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a device for measuring the vibration of a rod-shaped object according to the present invention;

[0023] Figure 2 for Figure 1 A partial view of part 100;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of a fuel rod bounce measuring device of the present invention;

[0025] Figure 4 for Figure 3 A partial view of part 100;

[0026] Figure 5 Schematic diagram of a flow chart of a method for measuring the vibration of a rod-shaped object according to Embodiment 5 of the present invention;

[0027] Figure 6 This is a schematic diagram of a method for measuring fuel rod (axial) runout according to Example 6 of the present invention;

[0028] Figure 7 This is a schematic diagram of a method for measuring fuel rod (radial) runout according to Example 6 of the present invention.

[0029] Among them: 1-data acquisition module; 2-mechanical rotation module; 3-support module; 4-positioning module; 5-rod / fuel rod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] It should be understood that the specific embodiments and drawings described herein are only used to explain the present invention rather than to limit the present invention.

[0032] It can be understood that, in the absence of conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other.

[0033] It can be understood that, for the convenience of description, the drawings of the present invention only show the parts related to the present invention, while the parts irrelevant to the present invention are not shown in the drawings.

[0034] It can be understood that each unit and module involved in the embodiments of the present invention may correspond to only one physical structure, or may be composed of multiple physical structures, or multiple units and modules may be integrated into one physical structure.

[0035] It can be understood that, in the absence of conflict, the functions and steps marked in the flowcharts and block diagrams of the present invention may occur in an order different from that marked in the drawings.

[0036] It is understood that the flowcharts and block diagrams of the present invention illustrate the possible architectures, functions, and operations of the systems, devices, equipment, and methods according to the various embodiments of the present invention. Each box in the flowchart or block diagram may represent a unit, module, program segment, or code, which contains executable instructions for implementing the specified functions. Moreover, each box or combination of boxes in the block diagram and flowchart may be implemented by a hardware-based system that implements the specified functions, or may be implemented by a combination of hardware and computer instructions.

[0037] It can be understood that the units and modules involved in the embodiments of the present invention can be implemented by software or hardware. For example, the units and modules can be located in a processor.

[0038] Embodiment 1:

[0039] like Figure 1 As shown, this embodiment provides a device for measuring the vibration of a rod-shaped object, including a data acquisition module 1, a mechanical rotation module 2, a support module 3, a positioning module 4 and a data processing and display module.

[0040] The support module 3 is used to support the horizontal placement of the rod-like object. The positioning module 4 is used to push the end of the rod-like object to be inspected into the working distance of the data acquisition module 1. The mechanical rotation module 2 is used to clamp and drive the rod-like object to rotate axially on the support module 3. The data acquisition module 1 is used to collect the data of the end of the rod-like object to be inspected in a rotating state. The data processing and display module is electrically connected to the data acquisition module 1, and is used to analyze the data of the end of the rod-like object to be inspected and calculate the runout value of the rod-like object.

[0041] In this embodiment, the measuring device is applied to the scene where there is a need to measure the runout of a rod-shaped object. Among them, examples of rod-shaped objects include bearings or shafts of mechanical parts, electric motors of power tools, shafts of wind turbines, crankshafts of automobile engines, bearings or shafts of pumps, supporting structures of bridges or buildings, metal pipes or pipe connectors, plastic or wooden rods, and tubular objects. The positioning module 4 is used to push the end of the rod-shaped object to be inspected into the working distance of the data acquisition module 1, that is, the end of the rod-shaped object to be inspected is separated from the data acquisition module 1 by a preset distance, and the two are in a non-contact state. The mechanical rotation module 2 is used to clamp and drive the rod-shaped object to rotate axially on the support module 3, wherein the rotation angle of the axial rotation is greater than or equal to 360 degrees. In one example, the mechanical rotation module 2, the support module 3, and the positioning module 4 are all arranged on the same base; or, the mechanical rotation module 2 is connected to the support module 3, and the support module 3 is connected to the positioning module 4; or, there is no connection between the mechanical rotation module 2, the support module 3, and the positioning module 4, and only the rod-shaped object has a contact relationship with the three respectively. The positioning module of this embodiment is used to automatically push the end of the rod to be inspected into the working distance of the data acquisition module, so that the end to be inspected and the data acquisition module are in a non-contact state, avoiding the risk of surface damage to the rod caused by contact detection. The mechanical rotation module is used to clamp and drive the rod to rotate axially on the support module, replacing the manual rolling of the rod, thereby improving the measurement efficiency. The data acquisition module is used to automatically collect data on the end of the rod to be inspected in a rotating state, and can obtain more collected data based on the control of the collection cycle, thereby improving the accuracy of the measurement results. The data processing and display module is used to display the calculated runout value of the rod, replacing the manual observation and calculation of the measurement results, thereby improving the measurement efficiency.

[0042] Optionally, the data of the end to be inspected includes the end face data of the end to be inspected, and / or the circumferential surface data of the end to be inspected. If the data acquisition module 1 acquires the end face data of the end to be inspected, the data processing and display module calculates the axial runout value of the rod-shaped object; if the data acquisition module 1 acquires the circumferential surface data of the end to be inspected, the data processing and display module calculates the radial runout value of the rod-shaped object; if the data acquisition module 1 acquires the end face data and circumferential surface data of the end to be inspected, the data processing and display module calculates the axial runout value and radial runout value of the rod-shaped object. Therefore, the data processing and display module of this embodiment is used to calculate the runout value of the rod-shaped object, specifically the axial runout value, and / or the radial runout value.

[0043] Optionally, the measuring device further comprises a motion control module. The motion control module is electrically connected to the mechanical rotation module 2 and the positioning module 4 and is used to control the clamping action and the rotation action of the mechanical rotation module 2 and the pushing action of the positioning module 4 .

[0044] In this embodiment, the motion control module includes a PLC (Programmable logic Controller) and a driver. The PLC is used to control the clamping action and the rotating action of the mechanical rotating module 2, and is used to control the pushing action of the positioning module 4. In one example, the motion control module is also used to control the overall action logic. For example, the motion control module is used to first control the positioning module 4 to push the end of the rod to be inspected into the working distance of the data acquisition module 1, and then control the mechanical rotating module 2 to clamp and drive the rod to rotate axially on the supporting module 3. In one example, the positioning module 4 includes a clamping claw, which is used to clamp the rod body of the rod and push the rod into the mechanical rotating module 2. Or the positioning module 4 includes a positioning plate, which is perpendicular to the horizontally placed rod, and the positioning plate is used to resist the opposite end face of the end of the rod to be inspected, and push the rod into the mechanical rotating module 2.

[0045] Optionally, the data acquisition module 1 includes a non-contact three-dimensional measuring instrument. The three-dimensional measuring instrument includes any one of the following: a laser displacement sensor, a laser profile scanner, and a spectral confocal sensor.

[0046] In this embodiment, the non-contact three-dimensional measuring instrument is used to collect three-dimensional point cloud data of points, lines or surfaces on the end (end face and / or peripheral face) of the rod-shaped object to be inspected. Furthermore, a non-contact multi-dimensional measuring instrument can also be used, and the multi-dimensional measuring instrument is used to collect multi-dimensional point cloud data. Compared with the projection method measurement using a two-dimensional camera, the projection edge may be blurred, resulting in inaccurate measurement results. The measurement method using a non-contact three-dimensional measuring instrument in this embodiment has the advantage of high measurement accuracy.

[0047] Optionally, the mechanical rotation module 2 comprises a rotary encoder.

[0048] The rotary encoder is electrically connected to the data acquisition module 1 and is used to trigger the data acquisition module 1 to uniformly collect the data of the end of the rod-shaped object to be inspected in a rotating state. Specifically, the rotary encoder on the mechanical rotation module provides a continuous pulse signal that is used to trigger the data acquisition module to perform continuous acquisition. In one example, the motion control module is electrically connected to the data acquisition module 1, and the motion control module is used to provide a start acquisition signal. In one example, there is no electrical connection between the motion control module and the data acquisition module, and the start acquisition signal is given by the host computer.

[0049] Optionally, the support module 3 adopts one of the following structures: a V-shaped groove, a square groove, and an arc groove.

[0050] In this embodiment, the support module adopts a structure that can stably place the rod-shaped object to be tested. In one example, a high-temperature grease layer or a ceramic coating is provided on the surface of the support module, that is, the contact surface between the support module and the rod-shaped object, to reduce the friction between the support module and the rod-shaped object.

[0051] Optionally, the positioning module 4 is used to push the end surface of the end of the rod-like object to be inspected into the working distance of the data acquisition module 1, the data acquisition module 1 is used to collect the end surface data of the end of the rod-like object to be inspected in a rotating state, and the data processing and display module is used to analyze the end surface data of the end of the rod-like object to be inspected and calculate the axial runout value of the rod-like object. And / or, the positioning module 4 is used to push the circumference of the end of the rod-like object to be inspected into the working distance of the data acquisition module 1, the data acquisition module 1 is used to collect the circumference data of the end of the rod-like object to be inspected in a rotating state, and the data processing and display module is used to analyze the circumference data of the end of the rod-like object to be inspected and calculate the radial runout value of the rod-like object.

[0052] Optionally, the data acquisition module 1 includes a linear array three-dimensional measuring instrument.

[0053] When the linear array 3D measuring instrument is used to collect the end surface data of the end to be inspected of the rod-like object in a rotating state, the measuring line direction of the linear array 3D measuring instrument is perpendicular to the axial direction of the rod-like object. When the linear array 3D measuring instrument is used to collect the circumferential surface data of the end to be inspected of the rod-like object in a rotating state, the measuring line direction of the linear array 3D measuring instrument is parallel to the axial direction of the rod-like object.

[0054] The measuring device for the jitter of a rod-shaped object provided in this embodiment has a positioning module for automatically pushing the end of the rod-shaped object to be inspected into the working distance of the data acquisition module, so that the end to be inspected and the data acquisition module are in a non-contact state, thereby avoiding the risk of surface damage to the rod-shaped object caused by contact detection. The mechanical rotation module is used to clamp and drive the rod-shaped object to rotate axially on the support module, replacing the manual rolling of the rod-shaped object to improve the measurement efficiency. The data acquisition module is used to automatically collect the data of the end to be inspected of the rod-shaped object in a rotating state, and can obtain more collected data based on the control collection cycle, thereby improving the accuracy of the measurement result. The data processing and display module is used to display the calculated jitter value of the rod-shaped object, replacing the manual observation and calculation of the measurement results, thereby improving the measurement efficiency. In summary, the measuring device for the jitter of a rod-shaped object can realize non-contact automatic measurement of the jitter of the rod-shaped object to improve the measurement efficiency, and the measurement result has high accuracy. In addition, the measurement method using a non-contact three-dimensional measuring instrument has the advantage of high measurement accuracy, thereby further improving the accuracy of the measurement result.

[0055] Embodiment 2:

[0056] like Figure 1 and Figure 2 As shown, this embodiment provides a fuel rod runout measurement device for realizing automatic measurement of fuel rod axial runout. The measurement device includes a data acquisition module, a mechanical rotation module, a support module, a positioning module, and a motion control module (not shown). Figure 1 ) and data processing and display module (not shown in Figure 1 ).

[0057] The data acquisition module is a 3D measuring instrument used to obtain 3D point cloud data of points or lines on the end surface of the fuel rod.

[0058] The mechanical rotation module is used to clamp and drive the fuel rod to rotate axially.

[0059] The support module is used to support the horizontal placement of fuel rods.

[0060] The positioning module is used to push the end face of the fuel rod to be inspected into the working distance of the data acquisition module.

[0061] The motion control module is used to control the clamping action and rotation action of the mechanical rotation module, the pushing action of the fuel rod positioning module and its overall action logic.

[0062] The data processing and display module is used to analyze and process the 3D data of the fuel rod end surface and calculate the axial runout value of the nuclear fuel rod.

[0063] Optionally, the data acquisition module is a non-contact 3D measuring instrument, including a laser displacement sensor, a laser profile scanner, and a spectral confocal sensor, which can realize 3D point data acquisition of points or lines on the end face of the fuel rod to be inspected.

[0064] Optionally, the mechanical rotation module includes a rotary encoder for triggering the data acquisition module to uniformly acquire data of the end surface to be inspected of the fuel rod.

[0065] Optionally, the support module may adopt a structure with a V-shaped groove or a square groove that can stably place the fuel rod to be tested.

[0066] The fuel rod runout measuring device of this embodiment can realize non-contact automatic detection of the axial runout of the fuel rod, has a fast detection speed, and the detection result is stable and reliable, which is convenient for the industrialized automated production of nuclear fuel rods.

[0067] Embodiment 3:

[0068] like Figure 3 and Figure 4 As shown, this embodiment provides a fuel rod runout measurement device, which can realize the automatic measurement of the radial runout of the fuel rod. The measurement device includes a data acquisition module, a mechanical rotation module, a support module, a positioning module, and a motion control module (not shown). Figure 3 ) and data processing and display module (not shown in Figure 3 ).

[0069] The data acquisition module is an optical 3D measuring instrument used to obtain 3D point cloud data of points or lines in the area to be inspected around the fuel rod.

[0070] The mechanical rotation module is used to clamp and drive the fuel rod to rotate axially.

[0071] The support module is used to support the horizontal placement of fuel rods.

[0072] The positioning module is used to push the peripheral surface of the fuel rod to be inspected into the working distance of the data acquisition module.

[0073] The motion control module is used to control the clamping action and rotation action of the mechanical rotation module, the pushing action of the fuel rod positioning module and its overall action logic.

[0074] The data processing and display module is used to analyze and process the 3D data of the fuel rod circumference and calculate the radial runout value of the nuclear fuel rod.

[0075] Optionally, the data acquisition module is a non-contact 3D measuring instrument, including a laser displacement sensor, a laser profile scanner, a spectral confocal sensor, etc., which can realize the 3D point data acquisition of points or lines in the area to be inspected around the fuel rod.

[0076] Optionally, when the data acquisition module is a linear array 3D measuring instrument, the direction of the measuring line of the instrument should be parallel to the axial direction of the fuel rod to be inspected.

[0077] Optionally, the mechanical rotation module includes a rotary encoder for triggering the data acquisition module to uniformly acquire data of the peripheral surface to-be-inspected area of ​​the fuel rod.

[0078] Optionally, the support module may adopt a structure with a V-shaped groove or a square groove that can stably place the fuel rod to be tested.

[0079] The fuel rod runout measuring device of this embodiment can realize non-contact automatic detection of radial runout of fuel rods, has a fast detection speed, and provides stable and reliable detection results, which is convenient for the industrialized automated production of nuclear fuel rods.

[0080] Embodiment 4:

[0081] This embodiment provides a fuel rod bounce measurement system, including the rod bounce measurement device described in Embodiment 1.

[0082] The rod-shaped object runout measuring device is used to measure the axial runout value and / or radial runout value of the fuel rod.

[0083] Embodiment 5:

[0084] like Figure 5 As shown, this embodiment provides a method for measuring the vibration of a rod-shaped object, using the measuring device described in any one of Embodiments 1 to 3, and the measuring method includes:

[0085] Step 101, pushing the end of the rod-shaped object to be inspected into the working distance of the data acquisition instrument.

[0086] Step 102: clamp and drive the rod-shaped object to rotate along the axial direction.

[0087] Step 103, collecting data of the end portion to be inspected of the rod-shaped object in a rotating state.

[0088] Step 104, calculating the jitter value of the rod-shaped object based on the data of the end of the rod-shaped object to be inspected.

[0089] Optionally, the end includes an end face, and the run-out value includes an axial run-out value.

[0090] Step 103 specifically includes: collecting end surface data of the end portion to be inspected of the rod-shaped object in a rotating state.

[0091] Step 104 specifically includes: calculating the axial runout value of the rod-shaped object according to the end surface data of the end portion to be inspected of the rod-shaped object.

[0092] And / or, the end portion includes a circumferential surface, and the run-out value includes a radial run-out value.

[0093] Step 103 specifically includes: collecting peripheral surface data of the end portion to be inspected of the rod-shaped object in a rotating state.

[0094] Step 104 specifically includes: calculating the radial runout value of the rod-shaped object according to the peripheral surface data of the end portion to be inspected of the rod-shaped object.

[0095] Embodiment 6:

[0096] This embodiment provides a fuel rod bounce measurement method, including:

[0097] The method for measuring the runout of a rod-shaped object described in Example 5 is used to measure the axial runout value and / or the radial runout value of the fuel rod.

[0098] Specifically, Figure 6 As shown, the method for measuring the axial runout of the fuel rod includes: acquiring and collecting the 3D point cloud data of the end face to be inspected during the rotation of the fuel rod to be inspected, and transmitting the 3D point cloud data of the end face to be inspected to the data processing and display module. The data processing and display module can obtain the fluctuation values ​​of multiple measurement points on the end face based on the 3D point cloud data of the end face to be inspected of the fuel rod. The fluctuation value refers to the difference between the maximum and minimum values ​​of the measurement points. The data processing and display module calculates the axial runout of the fuel rod based on the fluctuation values ​​of the measurement points on the end face of the fuel rod, and finally displays and outputs the axial runout value. Among them, Figure 6 The axial runout data acquisition module is the data acquisition module of Example 1, the fuel rod positioning module is the positioning module of Example 1, and the fuel rod supporting module is the supporting module of Example 1.

[0099] Specifically, Figure 7 As shown, the method for measuring the radial runout of the fuel rod includes: acquiring and collecting 3D point cloud data of the circumferential surface of the fuel rod to be inspected during its rotation, and transmitting the 3D point cloud data of the circumferential surface of the fuel rod to be inspected to the data processing and display module. The data processing and display module can obtain the fluctuation values ​​of multiple measurement points in the circumferential surface area based on the 3D point cloud data of the circumferential surface of the fuel rod to be inspected. The fluctuation value refers to the difference between the maximum and minimum values ​​of the measurement points. The data processing and display module calculates the radial runout of the fuel rod based on the fluctuation values ​​of the measurement points on the circumferential surface of the fuel rod, and finally displays and outputs the radial runout value. Among them, Figure 7 The axial runout data acquisition module is the data acquisition module of Example 1, the fuel rod positioning module is the positioning module of Example 1, and the fuel rod supporting module is the supporting module of Example 1.

[0100] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A device for measuring the vibration of a rod, characterized in that: It comprises a data acquisition module (1), a mechanical rotation module (2), a support module (3), a positioning module (4) and a data processing and display module. The support module (3) is used to support the horizontal placement of the rod-shaped object. The positioning module (4) is used to push the end of the rod-shaped object to be inspected into the working distance of the data acquisition module (1). The mechanical rotating module (2) is used to clamp and drive the rod-shaped object to rotate axially on the supporting module (3). The data acquisition module (1) is used to acquire data of the end of the rod-shaped object to be inspected in a rotating state. The data processing and display module is electrically connected to the data acquisition module (1) and is used to analyze the data of the end of the rod-shaped object to be inspected and calculate the jitter value of the rod-shaped object.

2. The device according to claim 1, characterized in that Also includes motion control module, The motion control module is electrically connected to the mechanical rotation module (2) and the positioning module (4), and is used to control the clamping action and the rotation action of the mechanical rotation module (2), and to control the pushing action of the positioning module (4).

3. The device according to claim 1, characterized in that The data acquisition module (1) comprises a non-contact three-dimensional measuring instrument, The three-dimensional measuring instrument includes any one of the following: a laser displacement sensor, a laser profile scanner, and a spectral confocal sensor.

4. The device according to claim 1, characterized in that The mechanical rotation module (2) comprises a rotary encoder, The rotary encoder is electrically connected to the data acquisition module (1) and is used to trigger the data acquisition module (1) to uniformly acquire the data of the end portion to be inspected of the rod-shaped object in a rotating state.

5. The device according to claim 1, characterized in that The support module (3) adopts one of the following structures: a V-shaped groove, a square groove, or an arc groove.

6. The device according to any one of claims 1 to 5, characterized in that: The positioning module (4) is used to push the end surface of the end of the rod-shaped object to be inspected into the working distance of the data acquisition module (1). The data acquisition module (1) is used to acquire end surface data of the end portion to be inspected of the rod-shaped object in a rotating state. The data processing and display module is used to analyze the end surface data of the end of the rod to be inspected and calculate the axial runout value of the rod. and / or, The positioning module (4) is used to push the peripheral surface of the end of the rod-shaped object to be inspected into the working distance of the data acquisition module (1). The data acquisition module (1) is used to acquire peripheral surface data of the end portion to be inspected of the rod-shaped object in a rotating state. The data processing and display module is used to analyze the peripheral surface data of the end portion of the rod-shaped object to be inspected and calculate the radial runout value of the rod-shaped object.

7. The device according to claim 6, characterized in that The data acquisition module (1) comprises a linear array three-dimensional measuring instrument, When the linear array three-dimensional measuring instrument is used to collect end surface data of the end portion to be inspected of the rod-shaped object in a rotating state, the measuring line direction of the linear array three-dimensional measuring instrument is perpendicular to the axial direction of the rod-shaped object. When the linear array three-dimensional measuring instrument is used to collect peripheral surface data of the end portion to be inspected of a rod-shaped object in a rotating state, the measuring line direction of the linear array three-dimensional measuring instrument is parallel to the axial direction of the rod-shaped object.

8. A fuel rod bounce measurement system, characterized in that: A device for measuring the vibration of a rod-shaped object comprising any one of claims 1 to 7, The rod-shaped object runout measuring device is used to measure the axial runout value and / or the radial runout value of the fuel rod.

9. A method for measuring the vibration of a rod-shaped object, characterized in that: include: Push the end of the rod to be inspected into the working distance of the data acquisition instrument; Clamping and driving the rod-like object to rotate along the axial direction; Collecting data of the end of the rod to be inspected in a rotating state; The runout value of the rod-shaped object is calculated based on the data of the end portion of the rod-shaped object to be inspected.

10. The method according to claim 9, characterized in that The end includes the end face, and the runout value includes the axial runout value. The collecting of the end data of the rod-shaped object to be inspected in a rotating state specifically includes: Collect the end surface data of the end of the rod to be inspected in a rotating state. The step of calculating the jitter value of the rod-shaped object according to the end data of the rod-shaped object to be inspected specifically includes: According to the end face data of the rod to be inspected, the axial runout value of the rod is calculated. and / or, The end includes the circumference, and the run-out value includes the radial run-out value. The collecting of the end data of the rod-shaped object to be inspected in a rotating state specifically includes: Collect the peripheral data of the end of the rod to be inspected in a rotating state. The step of calculating the jitter value of the rod-shaped object according to the end data of the rod-shaped object to be inspected specifically includes: The radial runout value of the rod-shaped object is calculated based on the peripheral surface data of the end portion to be inspected of the rod-shaped object.

11. A method for measuring fuel rod bounce, characterized in that: include: The method for measuring the runout of a rod-shaped object as described in any one of claims 9 to 10 is used to measure the axial runout value and / or the radial runout value of the fuel rod.

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