A connection force measuring device
By designing a connection force measuring device, and using a testing machine and fixture system to measure the connection force of fuel assemblies, the problems of low measurement efficiency and large influence of human factors in the existing technology are solved, and efficient and stable connection force measurement is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CGNPC URANIUM RESOURCES CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-06-02
AI Technical Summary
Existing testing equipment cannot meet the measurement requirements of the connection force between the lower connector of the new fuel assembly and the reactor core lower plate simulation component. The measurement efficiency is low and is greatly affected by human factors.
A connection force measuring device is designed, including a lower connector, a core lower plate simulation component, a first clamp, a second clamp, and a testing machine. The connection force of the fuel assembly is measured by applying force through the testing machine, and the connection force is accurately measured by using the first clamp and the second clamp.
It achieves efficient and stable connection force measurement, reduces the influence of human factors, and ensures the accuracy and reliability of measurement data.
Smart Images
Figure CN224317207U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of measuring equipment technology, and specifically relates to a connection force measuring device. Background Technology
[0002] With the rapid development and technological iteration of the global nuclear energy industry, the quality control standards for fuel assemblies, as one of the core components of nuclear reactors, are undergoing unprecedentedly stringent upgrades. Due to the structural characteristics of different reactors and the differentiated design of fuel assemblies, conventional testing devices are no longer sufficient to meet the testing requirements for the connection force between the lower connector of the fuel assembly and the core lower plate simulation component. Currently, there are no corresponding testing methods or devices to measure the connection force for new fuel assemblies. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a connection force measuring device that can measure the connection force between the lower connector of the fuel assembly and the core lower plate simulation component. It not only has high measurement efficiency, but also has little influence from human factors and stable measurement data.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A connection force measuring device is used to measure the connection force between the lower connector of a fuel assembly and a core lower plate simulation component. The device includes a lower connector, a core lower plate simulation component, a first clamp, a second clamp, and a testing machine. The core lower plate simulation component is connected to the first clamp. One end of the lower connector is inserted into the core lower plate simulation component, and the other end is connected to one end of the second clamp. The two ends of the second clamp are respectively connected to the first and second clamps of the testing machine.
[0006] The testing machine can apply a downward or upward force to the second clamp, which in turn drives the lower connector to be inserted into or pulled out of the core lower plate simulation component, and measures the force value.
[0007] Optionally, the first clamp includes a bottom plate, a side plate, and a top plate, wherein the bottom plate, the side plate, and the top plate form a receiving cavity for accommodating the core lower plate simulator;
[0008] The top plate has a through slot, and the lower connector is connected to the core lower plate simulation component through the through slot.
[0009] Optionally, a snap-fit groove is provided in the receiving cavity, and the core lower plate simulation component is snapped into the snap-fit groove.
[0010] Optionally, the side plate is also provided with an inlet and outlet for the core lower plate simulation component to enter and exit the receiving cavity.
[0011] Optionally, the through groove is a U-shaped groove that extends from the center of the top plate toward the edge of the top plate.
[0012] Optionally, the first clamp is screwed to the core lower plate simulation component.
[0013] Optionally, the first clamp is connected to the lower connector by a fixing pin.
[0014] Optionally, the lower connector includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment and the second connecting segment are both cylindrical cavity structures, and the third connecting segment is a conical cavity structure.
[0015] The inner walls of the first connecting section and the second connecting section are provided with a first threaded portion that mates with the second clamp, and the third connecting section is plugged into the core lower plate simulation component.
[0016] Optionally, the second clamp includes a rod body, a first connector and a second connector, the first connector and the second connector are respectively disposed at both ends of the rod body, and the rod body is provided with a second connector that is threadedly connected to the first threaded portion.
[0017] Optionally, the first connector is provided with a first connection hole for connecting to the testing machine, and the second connector is provided with a second connection hole for connecting to the testing machine.
[0018] As can be seen from the above technical solution, firstly, the core lower plate simulation component is connected to the first clamp, one end of the lower connector is connected to the second clamp, and the other end is inserted into the core lower plate simulation component. Simultaneously, both ends of the second clamp are connected to the first and second chucks of the testing machine, respectively. A vertically downward force is applied to the second clamp, causing it to pull the lower connector into the core lower plate simulation component. During insertion, the testing machine can measure the force applied during insertion. After measurement, a vertically upward force is applied to the second clamp, causing it to pull the lower connector out of the core lower plate simulation component. During extraction, the testing machine can measure the force applied during extraction. This connection force measuring device can measure the connection force between the lower connector of the fuel assembly and the core lower plate simulation component, offering high measurement efficiency, minimal influence from human factors, and stable measurement data. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of the connection force measuring device disclosed in the embodiment of this utility model.
[0021] Figure 2 This is a schematic diagram of the structure of the first clamp disclosed in the embodiment of this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 100 - Lower connector,
[0024] 200-Core lower plate simulation component,
[0025] 300-First clamp, 301-Receiving cavity, 302-First connecting hole, 303-Second connecting hole, 304-Snap-fit groove.
[0026] 400 - Second clamp. Detailed Implementation
[0027] In view of this, the purpose of this utility model is to provide a connection force measuring device that can measure the connection force between the lower connector of the fuel assembly and the core lower plate simulation component. It not only has high measurement efficiency, but also has little influence from human factors and provides stable measurement data.
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please refer to Figure 1 and Figure 2The connection force measuring device disclosed in this utility model embodiment is used to measure the connection force between the lower connector 100 of the fuel assembly and the core lower plate simulation component 200. The connection force measuring device includes the lower connector 100, the core lower plate simulation component 200, the first clamp 300, the second clamp 400, and the testing machine. The core lower plate simulation component 200 is connected to the first clamp 300. One end of the lower connector 100 is inserted and connected to the core lower plate simulation component 200, and the other end is connected to one end of the second clamp 400. The two ends of the second clamp 400 are respectively connected to the first chuck and the second chuck of the testing machine.
[0030] The testing machine can apply downward or upward force to the second clamp 400, and through the second clamp 400, drive the lower connecting piece 100 to be inserted into or pulled out of the core lower plate simulation piece 200, and realize the measurement of the force value.
[0031] First, the core lower plate simulator 200 is connected to the first clamp 300. One end of the lower connector 100 is connected to the second clamp 400, and the other end is inserted into the core lower plate simulator 200. Simultaneously, both ends of the second clamp 400 are connected to the first and second chucks of the testing machine, respectively. A vertically downward force is applied to the second clamp 400, causing the lower connector 100 to be inserted into the core lower plate simulator 200. During insertion, the testing machine measures the force applied during insertion. After measurement, a vertically upward force is applied to the second clamp 400, causing the lower connector 100 to be pulled out of the core lower plate simulator 200. During pull-out, the testing machine measures the force applied during pull-out. This connection force measuring device can measure the connection force between the lower connector of the fuel assembly and the core lower plate simulator, offering high measurement efficiency, minimal human influence, and stable measurement data.
[0032] This embodiment of the utility model does not limit the specific structure of the first clamp 300. Any structure that meets the requirements of this utility model is within the protection scope of this utility model.
[0033] In one embodiment, the first clamp 300 disclosed in this utility model includes a base plate, side plates, and a top plate. The base plate, side plates, and top plate form a receiving cavity for accommodating the core lower plate simulation component 200. A through groove is provided on the top plate, and the lower connecting member 100 is inserted and connected to the core lower plate simulation component 200 through the through groove. With this configuration, the core lower plate simulation component 200 can be placed in the first clamp 300 to achieve positioning of the core lower plate simulation component 200.
[0034] In order to improve the connection strength between the core lower plate simulation component 200 and the first clamp 300, the receiving cavity disclosed in this embodiment of the utility model is provided with a snap-fit groove 304, wherein the core lower plate simulation component 200 is snap-fitted to the snap-fit groove 304.
[0035] To facilitate the placement or removal of the core lower plate simulation component 200 from the first clamp 300, the side plate of the first clamp 300 disclosed in this embodiment of the present invention is further provided with an inlet and outlet for the core lower plate simulation component 200 to enter and exit the receiving cavity.
[0036] The present invention does not limit the specific structure of the through groove. The through groove can be a circular groove, an elliptical groove or a U-shaped groove.
[0037] Preferably, the passage groove disclosed in this embodiment of the present invention is a U-shaped groove, wherein the U-shaped groove extends from the center of the top plate toward the edge of the top plate. This structure not only facilitates the entry and exit of the core lower plate simulation component 200 into the receiving cavity, but also facilitates the insertion of the lower connecting component 100 into the core lower plate simulation component 200.
[0038] Of course, as another embodiment, the first clamp 300 disclosed in this utility model embodiment and the core lower plate simulation component 200 can also be screwed together.
[0039] The specific shape of the first clamp 300 is not limited in this embodiment of the utility model. The first clamp 300 can be cylindrical, rectangular, frustum-shaped, or of course, other shapes.
[0040] This embodiment of the utility model does not limit the specific structure of the first clamp 300 and the lower connecting member 100.
[0041] In one embodiment, the first clamp 300 is connected to the lower connector 100 by a fixing pin.
[0042] In another embodiment, the first clamp 300 is connected to the lower connector 100 by a thread.
[0043] The lower connector 100 disclosed in this embodiment of the present invention includes a first connecting segment, a second connecting segment and a third connecting segment connected in sequence. The first connecting segment and the second connecting segment are both cylindrical cavity structures, and the third connecting segment is a conical cavity structure.
[0044] The inner walls of the first and second connecting sections are both provided with first threaded portions, and the third connecting section is plugged into the core lower plate simulation component 200.
[0045] As a further embodiment, the second clamp 400 disclosed in this utility model embodiment includes a rod body, a first connector and a second connector, wherein the first connector and the second connector are respectively disposed at both ends of the rod body, and the rod body is provided with a second connector that is threadedly connected to the first threaded portion.
[0046] The first threaded part is connected to the second threaded part to realize the connection between the second clamp 400 and the lower connecting member 100.
[0047] As a further embodiment, the first connector disclosed in this utility model embodiment is provided with a first connection hole 302 for connecting to the testing machine, and the second connector is provided with a second connection hole 303 for connecting to the testing machine.
[0048] It should be noted that the testing machine is a universal testing machine with a range of 0~50000N; a minimum resolution of 1N; and an accuracy of 5%.
[0049] Specific working principle:
[0050] 1) Start the testing machine and select the lower connector 100 and the core lower plate simulation component 200 to insert the test program;
[0051] 2) Connect the first clamp 300 to the first chuck of the testing machine through the second connecting hole 303, and connect the second clamp 400 to the second chuck of the testing machine through the first connecting hole 302, and ensure that the axes of the first clamp 300, the first chuck of the testing machine, the second clamp 400, and the second chuck of the testing machine are aligned;
[0052] 3) Connect the first clamp 300 to the core lower plate simulation component 200, and connect the second clamp 400 to the lower connecting component 100;
[0053] 4) Confirm that the testing machine program has been reset to zero;
[0054] 5) Align the lower connector 100 with the insertion hole of the core lower plate simulation component 200;
[0055] 6) Insert the lower connector 100 into the core lower plate simulation component 200;
[0056] 7) Start the testing machine. The second chuck in the testing machine holds the second clamp 400 and drives the lower connector 100 to move downward. At the same time, set the moving speed of the lower connector 100 on the testing machine until the lower connector 100 is inserted into the through hole of the core lower plate simulation 200 and the end is exposed from the first clamp 300. Record the maximum force value and force-displacement curve during the insertion process.
[0057] 8) After the insertion force test is completed, switch the testing machine to the extraction force test program and confirm that the program has been reset to zero;
[0058] 9) Start the test program to move the lower connector 100 upward, set the moving speed of the lower connector 100 until the upper part of the lower connector 100 is submerged in the receiving cavity of the core lower plate simulation component 200, and record the maximum force value and force-displacement curve during the pull-out process.
[0059] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A connection force measuring device for measuring the connection force between the lower connector of a fuel assembly and a simulated lower core plate, characterized in that, It includes a lower connector, a core lower plate simulation component, a first clamp, a second clamp, and a testing machine. The core lower plate simulation component is connected to the first clamp. One end of the lower connector is inserted into the core lower plate simulation component, and the other end is connected to one end of the second clamp. The two ends of the second clamp are respectively connected to the first chuck and the second chuck of the testing machine. The testing machine can apply a downward or upward force to the second clamp, which in turn drives the lower connector to be inserted into or pulled out of the core lower plate simulation component, and measures the force value.
2. The connection force measuring device according to claim 1, characterized in that, The first fixture includes a bottom plate, a side plate, and a top plate, wherein the bottom plate, the side plate, and the top plate form a receiving cavity for accommodating the core lower plate simulator; The top plate has a through slot, and the lower connector is connected to the core lower plate simulation component through the through slot.
3. The connection force measuring device according to claim 2, characterized in that, The cavity is provided with a snap-fit groove, and the core lower plate simulation component is snapped into the snap-fit groove.
4. The connection force measuring device according to claim 2, characterized in that, The side plate is also provided with an inlet and outlet for the core lower plate simulator to enter and exit the receiving cavity.
5. The connection force measuring device according to claim 2, characterized in that, The passageway is a U-shaped groove that extends from the center of the top plate toward the edge of the top plate.
6. The connection force measuring device according to claim 1, characterized in that, The first clamp is screwed to the core lower plate simulation component.
7. The connection force measuring device according to claim 1, characterized in that, The first clamp is connected to the lower connector by a fixing pin.
8. The connection force measuring device according to claim 1, characterized in that, The lower connector includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment and the second connecting segment are both cylindrical cavity structures, and the third connecting segment is a conical cavity structure. The inner walls of the first connecting section and the second connecting section are provided with a first threaded portion that mates with the second clamp, and the third connecting section is plugged into the core lower plate simulation component.
9. The connection force measuring device according to claim 8, characterized in that, The second clamp includes a rod body, a first connector and a second connector, the first connector and the second connector are respectively disposed at both ends of the rod body, and the rod body is provided with a second connector that is threadedly connected to the first threaded portion.
10. The connection force measuring device according to claim 9, characterized in that, The first connector is provided with a first connection hole for connecting to the testing machine, and the second connector is provided with a second connection hole for connecting to the testing machine.