Compression part experimental device

Abstract

The invention provides a pressing part experiment device, which comprises a heating shell, an upper pressing cover plate and a lower pressing cover plate, and is characterized in that the heating shell is internally provided with a heating cavity; one end of the upper gland plate penetrates through the top of the heating shell and is connected with the upper end of the testing machine, and the other end extends into the heating chamber; one end of the lower pressing cover plate extends into the heating chamber, the other end is hermetically connected with the heating shell, and the bottom of the lower pressing cover plate is connected with the lower end of the tester; a first pressing piece is installed at one end, facing the lower pressing cover plate, of the upper pressing cover plate, a second pressing piece is installed at one end, facing the upper pressing cover plate, of the lower pressing cover plate, and a to-be-tested pressing part is placed between the first pressing piece and the second pressing piece. According to the experimental device, pressurization and high-temperature heating are integrated, the upper pressing cover plate is matched with the testing machine to provide stable pressing force, and the influence of too tight or too loose pressure on a pressing part is avoided; the arrangement of the heating shell can simulate part pressing experiments in different high-temperature environments, the actual use environment is better restored, and the authenticity and reliability of the experiments are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of clamping component design verification, and in particular to a clamping component experimental device. Background Art

[0002] In nuclear power plants, nuclear reactor safety is a crucial aspect of nuclear energy utilization, involving many aspects such as reactor design, operation, maintenance, and accident prevention and response.

[0003] Among them, the compression components inside the nuclear reactor are an important component to ensure the safe and stable operation of the reactor. The compression components are also called elastic rings. They are a large-diameter compression stainless steel circular ring spring with a transverse Z-shaped cross-section. They are located between the upper support flange and the flange of the hanging basket cylinder. These components need to have a certain elastic rebound ability and be able to maintain the necessary compression force.

[0004] During actual use, when the pressure of the clamping components is insufficient, resulting in failure to be clamped or the pressure fails, the basket barrel assembly may be unable to fully fix and support the core components, causing excessive flow-induced vibration of the basket barrel assembly, thereby destroying the structural integrity of the reactor, resulting in a decrease in structural stability and increasing the risk of vibration, displacement or even failure of the core components during operation.

[0005] Furthermore, insufficient pressure in the clamping components may also cause the gap between the basket barrel assembly and the core to increase, affecting the flow of coolant in the core, causing the core temperature to rise and the cooling efficiency to decrease, thereby affecting the overall operating performance of the reactor, aggravating fatigue damage and increasing maintenance costs.

[0006] When the pressure of the clamping component is too high, it will directly transfer greater pressure to the basket cylinder assembly, significantly increasing the mechanical stress on the basket cylinder assembly, which may cause plastic deformation or even damage to the material. In the long run, it will also cause the flow-induced vibration amplitude of the basket cylinder assembly to increase and the frequency to decrease, increasing the risk of accidents, affecting its carrying capacity and stability, reducing its ability to resist earthquakes and shocks, and affecting the normal operation of the nuclear reactor.

[0007] Some existing devices, such as gantry-type pressurizing devices and universal material testing machines, can pressurize the compression components in the pile, but they still have some shortcomings in practical applications. For example, the pressurizing device may have pressure fluctuations during the pressurization process, resulting in unstable force or force deviation on the compression components, affecting the pressurization effect; or the space where some compression components in the pile are located may be relatively small, so large pressurizing devices cannot be used; or, in some special working conditions, such as high temperature, the existing pressurizing device may be difficult to work normally or achieve the expected effect, thus limiting the use of the pressurizing device.

[0008] Based on this, the inventor of the present application proposes a clamping component experimental device in order to solve the above technical problems. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the defect that the pressurizing device in the prior art cannot meet the use scenario of the pressing component and cannot meet the pressurizing requirements, and to provide a pressing component experimental device.

[0010] The present invention solves the above technical problems through the following technical solutions:

[0011] The present invention provides a compression component experimental device, which is characterized in that it includes:

[0012] A heating shell having a heating chamber therein;

[0013] An upper cover plate, one end of which is passed through the top of the heating shell and connected to the upper end of the testing machine, and the other end of which extends into the heating chamber;

[0014] The lower cover plate has one end extending into the heating chamber and the other end sealedly connected to the heating shell, and the bottom of the lower cover plate is connected to the lower end of the testing machine; wherein,

[0015] A first pressing member is installed at one end of the upper pressing cover plate facing the lower pressing cover plate, and a second pressing member is installed at one end of the lower pressing cover plate facing the upper pressing cover plate. The pressing component to be tested is placed between the first pressing member and the second pressing member.

[0016] According to an embodiment of the present invention, the first pressing member is detachably connected to the upper pressing cover plate, and the second pressing member is detachably connected to the lower pressing cover plate.

[0017] According to one embodiment of the present invention, a first annular groove is formed on the circumference of the upper cover plate toward one side of the lower cover plate, and the first clamping member is clamped in the first annular groove and detachably connected to the upper cover plate through a threaded connector;

[0018] The lower pressing cover plate is provided with a second annular groove on a circumference of a side surface of the upper pressing cover plate, and the second pressing member is clamped in the second annular groove and detachably connected to the lower pressing cover plate via a threaded connector.

[0019] According to one embodiment of the present invention, the materials of the first pressing member and the second pressing member are respectively consistent with the materials of the upper supporting flange and the hanging basket cylinder flange.

[0020] According to one embodiment of the present invention, at least one first lead hole is formed on the upper pressing cover plate, and at least one second lead hole is formed on the lower pressing cover plate;

[0021] A fitting gap is formed between the outer sides of the upper and lower pressure cover plates and the heating shell, an installation gap is formed between the first and second pressure members and the pressure component to be tested, and the first lead hole and the second lead hole are respectively connected to the installation gap and the fitting gap.

[0022] According to an embodiment of the present invention, a temperature sensor is provided in the first lead hole, the second lead hole or the installation gap, and the temperature sensor is used to detect the ambient temperature around the pressing component to be tested.

[0023] According to one embodiment of the present invention, at least one mounting hole is formed on the top of the heating shell, and at least one matching hole corresponding to the mounting hole is formed on the top of the upper pressure cover plate;

[0024] It also includes a displacement sensor, which is arranged on the outside of the heating shell. The displacement sensor is sequentially penetrated through the installation hole and the matching hole through a connecting rod to be connected to the upper pressure cover plate.

[0025] According to one embodiment of the present invention, the displacement sensor is a micrometer;

[0026] The connecting rod is a quartz rod.

[0027] According to an embodiment of the present invention, the outer side of the connecting rod is sealed with the mounting hole by high-temperature asbestos to cooperate with the heating shell in a sealing manner.

[0028] According to an embodiment of the present invention, a high-temperature ceramic heating ring is provided in the heating shell for controlling the temperature of the heating chamber at a target temperature.

[0029] According to one embodiment of the present invention, a spherical mating pad and a first connecting member are provided at the bottom of the lower pressure cover plate, one end of the first connecting member is connected to the lower end of the testing machine, and the other end is rotationally matched with the spherical mating pad.

[0030] According to one embodiment of the present invention, at least one positioning hole is further provided at the bottom of the lower pressing cover plate, and the positioning hole is communicated with the heating chamber;

[0031] The strain gauge wire arranged on the clamping component to be measured is led to the outside of the heating shell through the positioning hole.

[0032] The positive and progressive effects of the present invention are:

[0033] The clamping component experimental device of the present invention integrates pressurization and high-temperature heating. The upper pressure cover plate cooperates with the testing machine to provide a stable clamping force to avoid the influence of excessive pressure or too loose pressure on the clamping component. The setting of the heating shell can simulate the clamping component experiment under different high-temperature environments, more restore the actual use environment, and ensure the authenticity and reliability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0035] Figure 1 It is a cross-sectional view of the internal structure of the compression component experimental device of the present invention;

[0036] Figure 2 for Figure 1 Structural schematic diagram of the middle and upper gland plate;

[0037] Figure 3 for Figure 1 Structural schematic diagram of the middle and lower cover plates;

[0038] Figure 4 for Figure 1 A top view of the heating shell;

[0039] Figure 5 for Figure 4 A cross-sectional view of a heating shell at one angle.

[0040] 1. Heating shell; 11. Heating chamber; 12. Fitting clearance; 13. Installation clearance; 14. Temperature sensor; 15. Installation hole; 16. High temperature ceramic heating ring;

[0041] 2. Upper pressing cover plate; 21. First pressing member; 22. First annular groove; 23. First lead hole; 24. Matching hole; 25. Second connecting member;

[0042] 3. Lower pressing cover plate; 31. Second pressing member; 32. Second annular groove; 33. Second lead hole; 34. Spherical mating pad; 35. First connecting member; 36. Positioning hole;

[0043] 4. The compression parts to be tested;

[0044] 5. Displacement sensor; 51. Connecting rod. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] Please refer to Figures 1 to 5 The present invention proposes a clamping component experimental device, comprising a heating shell 1, an upper pressure cover plate 2 and a lower pressure cover plate 3, wherein the heating shell 1 has a heating chamber 11; one end of the upper pressure cover plate 2 is passed through the top of the heating shell 1 and is connected to the upper end of the testing machine, and the other end extends into the heating chamber 11; one end of the lower pressure cover plate 3 extends into the heating chamber 11, and the other end is sealed and connected to the heating shell 1, and the bottom of the lower pressure cover plate 3 is connected to the lower end of the testing machine; wherein, a first clamping member 21 is installed at one end of the upper pressure cover plate 2 facing the lower pressure cover plate 3, and a second clamping member 31 is installed at one end of the lower pressure cover plate 3 facing the upper pressure cover plate 2, and the clamping component 4 to be tested is placed between the first clamping member 21 and the second clamping member 31.

[0048] The experimental device of the present invention is provided with a first clamping member 21 on the upper pressure cover plate 2 and a second clamping member 31 on the lower pressure cover plate 3 in order to cooperate with the installation and positioning of the clamping component 44 to be tested. The upper pressure cover plate 2 and the lower pressure cover plate 3 are respectively connected to the upper and lower ends of the testing machine. Under the action of the testing machine, the pressurization test of the clamping component 4 to be tested can be satisfied. In this way, the force applied to the clamping component 4 to be tested can be adjusted according to actual needs to meet the adjustment requirements of the clamping force under different experimental conditions.

[0049] At the same time, a heating shell 1 is set on the outside of the clamping component 4 to be tested, and a heating chamber 11 is provided in the heating shell 1. The clamping component 4 to be tested is tested in the heating chamber 11. In this way, the pressurization experiment of the clamping component 4 to be tested in a high temperature environment can be simulated, and the actual situation of the actual use site of the clamping component 4 to be tested can be restored, thereby ensuring the authenticity and reliability of the experiment.

[0050] In one embodiment, the first pressing member 21 is detachably connected to the upper pressing cover plate 2 , and the second pressing member 31 is detachably connected to the lower pressing cover plate 3 .

[0051] The detachable connection between the first clamping member 21 and the upper cover plate 2 and the detachable connection between the second clamping member 31 and the lower cover plate 3 can be used to adapt to various types of clamping components 4 to be tested, which makes it more convenient to replace the clamping components 4 to be tested and arrange the sensor measuring points.

[0052] Please refer to Figure 2 and Figure 3 The upper cover plate 2 has a first annular groove 22 on its circumference toward one side of the lower cover plate 3. The first pressing member 21 is clamped in the first annular groove 22 and is detachably connected to the upper cover plate 2 through a threaded connector. The lower cover plate 3 has a second annular groove 32 on its circumference toward one side of the upper cover plate 2. The second pressing member 31 is clamped in the second annular groove 32 and is detachably connected to the lower cover plate 3 through a threaded connector.

[0053] That is, the upper cover plate 2 is stepped toward the lower cover plate 3 , and a circumferential groove is opened at the top, and the groove is open, so that the first clamping member 21 can be clamped outside the first annular groove 22 and connected to the upper cover plate 2 .

[0054] Similarly, the lower pressure cover plate 3 is also stepped toward the upper pressure cover plate 2 , and a second annular groove 32 is opened on the upper circumference of the lower pressure cover plate 3 . The second annular groove 32 is open, so that the second clamping member 31 can be clamped outside the second annular groove 32 and connected to the lower pressure cover plate 3 .

[0055] Specifically, the first pressing member 21 is detachably connected to the upper cover plate 2 via a plurality of threaded connectors; correspondingly, the second pressing member 31 is detachably connected to the lower cover plate 3 via a plurality of threaded connectors. The threaded connectors may be, but are not limited to, screws, and the number of the threaded connectors may be four, six, eight, etc., which is not limited here.

[0056] It can be seen that the materials of the first pressing member 21 and the second pressing member 31 are respectively consistent with the materials of the upper supporting flange and the hanging basket cylinder flange.

[0057] That is, in order to ensure the authenticity of the experiment, the materials used for the first clamping member 21 and the second clamping member 31 are respectively consistent with the materials of the upper supporting flange and the hanging basket cylinder flange. In this way, placing the clamping component 4 to be tested between the first clamping member 21 and the second clamping member 31 is closer to the actual installation position and environment of the clamping component 4 to be tested, thereby making the experimental results more realistic and reliable.

[0058] Please continue to refer to Figure 2 and Figure 3At least one first lead hole 23 is provided on the upper pressure cover plate 2, and at least one second lead hole 33 is provided on the lower pressure cover plate 3; a fitting gap 12 is formed between the outer sides of the upper pressure cover plate 2 and the lower pressure cover plate 3 and the heating shell 1, and an installation gap 13 is formed between the first clamping member 21 and the second clamping member 31 and the clamping component 4 to be tested, and the first lead hole 23 and the second lead hole 33 are respectively connected to the installation gap 13 and the fitting gap 12.

[0059] Furthermore, a temperature sensor 14 is provided in the first lead hole 23, the second lead hole 33 or the installation gap 13, and the temperature sensor 14 is used to detect the ambient temperature around the pressing component 4 to be tested.

[0060] The temperature sensor 14 is used to monitor the ambient temperature of the four sides of the clamping component to be tested in real time, which is closer to the actual high temperature environment.

[0061] Please refer to Figure 1 The temperature sensor 14 is disposed near the clamping component 4 to be tested, for example, at the first lead hole 23 or the second lead hole 33 near the installation gap 13. Alternatively, the temperature sensor 14 is disposed near the clamping component 4 to be tested at the matching gap 12, and the specific position is not limited here.

[0062] It should be noted that the number of the temperature sensors 14 can be one, two, or more, etc., which is not limited here.

[0063] Optionally, the temperature sensor 14 is a thermocouple with a measurement accuracy of ±1° C. The temperature sensor 14 can be installed at a designated position using a high-temperature tape.

[0064] Please refer to Figure 1 , Figure 4 and Figure 5 At least one mounting hole 15 is provided on the top of the heating shell 1, and at least one matching hole 24 corresponding to the mounting hole 15 is provided on the top of the upper pressure cover plate 2; a displacement sensor 5 is also included, and the displacement sensor 5 is arranged on the outside of the heating shell 1. The displacement sensor 5 is sequentially penetrated through the mounting hole 15 and the matching hole 24 through a connecting rod 51 to be connected to the upper pressure cover plate 2.

[0065] Preferably, the displacement sensor 5 is a micrometer; and the connecting rod 51 is a quartz rod.

[0066] It can be seen that the accuracy of the selected micrometer is 0.001 mm. The number of micrometers is described here by taking four as an example, but it is not limited.

[0067] Correspondingly, the number of the mounting holes 15 and the matching holes 24 is also four, and the four micrometers are evenly distributed on the heating shell 1.

[0068] Because the heating housing 1 has a heating chamber 11 inside, in order to prevent the high temperature from affecting the dial gauge, a connecting rod 51 is used to lead the dial gauge to the outside of the heating housing 1.

[0069] It can be seen that in order to facilitate the installation of the connecting rod 51, the size of the mounting hole 15 is larger than the diameter of the connecting rod 51. In order to ensure the sealing between the connecting rod 51 and the heating shell 1, high-temperature asbestos or other high-temperature resistant soft materials are used to seal the gap between the connecting rod 51 and the mounting hole 15. This is used to prevent the heat in the heating chamber 11 from overflowing and affecting the measurement of the micrometer.

[0070] It should be noted that at least one positioning hole 36 is also opened at the bottom of the lower pressing cover plate 3, and the positioning hole 36 is connected to the heating chamber 11; the strain gauge wire set on the clamping component 4 to be tested is led to the outside of the heating shell 1 through the positioning hole 36.

[0071] The number of the positioning holes 36 is described here by taking four as an example, but the specific number is not limited here.

[0072] Please continue to refer to Figure 1 A spherical matching pad 34 and a first connecting member 35 are provided at the bottom of the lower pressing cover plate 3. One end of the first connecting member 35 is connected to the lower end of the testing machine, and the other end is rotationally matched with the spherical matching pad 34.

[0073] The spherical mating pad 34 and the first connecting member 35 are provided to ensure the centering of the entire device and prevent deviation due to pressure application.

[0074] Correspondingly, a second connecting member 25 is provided on the upper pressure cover plate 2, and one end of the second connecting member 25 passes through the heating shell 1 and is connected to the upper end of the testing machine.

[0075] In one embodiment, a high-temperature ceramic heating coil 16 is disposed in the heating housing 1 to control the temperature of the heating chamber 11 at a target temperature.

[0076] The heating chamber 11 is equipped with a temperature control box, and the temperature in the heating chamber 11 is controlled at a target temperature through a high temperature ceramic heating coil 16. The target temperature at this time can be 330°C, and can also be adjusted according to actual experimental needs, which is not limited here.

[0077] Specifically, a heat insulation board can be arranged on the top of the heating shell 1, the shell and the heat insulation board are arranged separately and can be sealed and connected by welding or a sealing ring, and one end of the upper cover plate 2 is passed through the heat insulation board and extends to the heating chamber 11. The heat insulation board is made of phlogopite board, which is resistant to high temperature and has good insulation performance, and can keep the heating chamber 11 in a closed state, which is conducive to preventing heat diffusion.

[0078] In summary, the clamping component experimental device provided by the present invention integrates high-temperature heating and pressurization, and utilizes the upper pressure cover plate 2 and the lower pressure cover plate 3 in cooperation with the testing machine to provide stable pressure. Moreover, by utilizing the spherical matching pad 34 and the first connecting member 35, the stability and precision requirements of the pressurization process can be ensured, thereby greatly improving the experimental efficiency.

[0079] By providing a stable pressing force, it is possible to ensure that the applied pressure is evenly distributed, thereby preventing the pressure from being too tight or too loose and affecting the pressing components.

[0080] The limitation on the materials of the first clamping member 21 and the second clamping member 31 and the control on the temperature of the heating chamber 11 can make the experimental environment of the clamping component 4 to be tested closer to the actual working environment, thereby restoring a more realistic working environment of the clamping component 4 to be tested and ensuring the authenticity and reliability of the experiment.

[0081] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0082] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0083] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A compression component test device, characterized in that: include: A heating shell having a heating chamber therein; An upper cover plate, one end of which is passed through the top of the heating shell and connected to the upper end of the testing machine, and the other end of which extends into the heating chamber; The lower cover plate has one end extending into the heating chamber and the other end sealedly connected to the heating shell, and the bottom of the lower cover plate is connected to the lower end of the testing machine; wherein, A first pressing member is installed at one end of the upper pressing cover plate facing the lower pressing cover plate, and a second pressing member is installed at one end of the lower pressing cover plate facing the upper pressing cover plate. The pressing component to be tested is placed between the first pressing member and the second pressing member.

2. The compression component test device according to claim 1, characterized in that: The first pressing member is detachably connected to the upper pressing cover plate, and the second pressing member is detachably connected to the lower pressing cover plate.

3. The pressing component test device according to claim 2, characterized in that: The upper cover plate is provided with a first annular groove on the circumference of a side surface of the lower cover plate, and the first pressing member is clamped in the first annular groove and detachably connected to the upper cover plate through a threaded connector; The lower pressing cover plate is provided with a second annular groove on a circumference of a side surface of the upper pressing cover plate, and the second pressing member is clamped in the second annular groove and detachably connected to the lower pressing cover plate via a threaded connector.

4. The pressing component test device according to claim 3, characterized in that: The materials of the first pressing member and the second pressing member are respectively consistent with the materials of the upper supporting flange and the hanging basket cylinder flange.

5. The pressing component test device according to claim 1, characterized in that: The upper pressing cover plate is provided with at least one first lead hole, and the lower pressing cover plate is provided with at least one second lead hole; A fitting gap is formed between the outer sides of the upper and lower pressure cover plates and the heating shell, an installation gap is formed between the first and second pressure members and the pressure component to be tested, and the first lead hole and the second lead hole are respectively connected to the installation gap and the fitting gap.

6. The pressing component test device according to claim 5, characterized in that: A temperature sensor is provided in the first lead hole, the second lead hole or the installation gap, and the temperature sensor is used to detect the ambient temperature around the pressing component to be tested.

7. The compression component test device according to claim 1, characterized in that: At least one mounting hole is formed on the top of the heating shell, and at least one matching hole corresponding to the mounting hole is formed on the top of the upper pressure cover plate; It also includes a displacement sensor, which is arranged on the outside of the heating shell. The displacement sensor is sequentially penetrated through the installation hole and the matching hole through a connecting rod to be connected to the upper pressure cover plate.

8. The pressing component test device according to claim 7, characterized in that: The displacement sensor is a micrometer; The connecting rod is a quartz rod.

9. The pressing component test device according to claim 7, characterized in that: The mounting hole is sealed with high-temperature asbestos on the outside of the connecting rod to seal with the heating shell.

10. The pressing component test device according to claim 1, characterized in that: A high-temperature ceramic heating ring is arranged in the heating shell to control the temperature of the heating chamber at a target temperature.

11. The pressing component test device according to claim 1, characterized in that: A spherical matching pad and a first connecting piece are provided at the bottom of the lower pressing cover plate. One end of the first connecting piece is connected to the lower end of the testing machine, and the other end is rotationally matched with the spherical matching pad.

12. The pressing component test device according to claim 1, characterized in that: The bottom of the lower cover plate is also provided with at least one positioning hole, and the positioning hole is connected to the heating chamber; The strain gauge wire arranged on the clamping component to be measured is led to the outside of the heating shell through the positioning hole.

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