Collision test device and reactor test piece suitable for same
By designing the contact push rod, push ball and force sensor in the collision test device, the collision force between the basket cylinder assembly and the support key is accurately measured, which solves the problem of reduced life caused by the collision between the support key and the embedded part at the lower end of the basket, and ensures the safe operation of the reactor.
Patent Information
- Application Number
- CN202510849368.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-24
- Publication Date
- 2025-09-26
AI Technical Summary
The support keys and the inserts at the lower end of the hanging basket of a small integrated pressurized water reactor are prone to collision during vibration, which reduces the life of the workpiece and affects work efficiency. There is a lack of effective collision force measurement methods to ensure the safe operation of the reactor.
A collision test device was designed, including a contact push rod, a push ball, a preloaded push rod and a force sensor. The contact push rod collides with the basket cylinder assembly, and the collision force is accurately measured using the force sensor to provide reference data for the actual operation inside the reactor.
The accurate measurement of the collision force between the hanging basket cylinder assembly and the support key is achieved, thereby improving the safety operation reliability and work efficiency of the reactor.
Smart Images
Figure CN120708951A_ABST
Abstract
Description
Technical Field
[0001] The present application mainly relates to the field of reactor testing, and in particular to a collision test device and a reactor test piece applicable thereto. Background Art
[0002] With the continuous development of nuclear energy technology, small integrated pressurized water reactors (PWRs) have become a hot topic in the current nuclear energy development field. They have the advantages of high safety, good flexibility, relatively mature development, and strong engineering feasibility. Small integrated PWRs typically adopt a compact layout, and their basket structure is generally long. Therefore, support keys are arranged at the bottom of the pressure vessel to limit the basket structure. During PWR operation, the reactor coolant needs to flow through the reactor pressure vessel and the in-core components to cool the nuclear fuel. Therefore, turbulence exists almost everywhere in the in-core components. Turbulence generates pulsating pressure when flowing through the surface of the structure. Under the action of pulsating pressure, the in-core components will produce flow-induced vibrations, which are the main cause of fatigue damage and wear of the in-core components.
[0003] There is a gap between the support key of the small integrated pressurized water reactor and the embedded part at the lower end of the hanging basket. When the hanging basket structure vibrates, it is easy for the key to collide with the support key, thereby reducing the life of the workpiece and affecting the work efficiency of the workpiece. Summary of the Invention
[0004] The technical problem to be solved by this application is to provide a collision test device and a reactor test piece applicable thereto, which can accurately measure the collision force of the support key and the hanging basket cylinder assembly in the reactor test piece, provide effective reference data for the in-pile work of a real reactor, and further ensure the safe operation of the reactor.
[0005] In order to solve the above technical problems, the present application provides a collision test device suitable for a reactor test piece, wherein the reactor test piece includes a pressure vessel, a hanging basket cylinder assembly and a support key, and the collision test device includes: a contact push rod, the contact push rod includes a collision portion and a push rod body extending along a first direction, the push rod body includes a first main body portion and a second main body portion relative to each other, the collision portion is located on one side of the first main body portion, the collision portion is suitable for colliding with the hanging basket cylinder assembly, and the second main body portion is provided with a push rod groove; a push ball, the push ball is tightly against the inner wall of the push rod groove at least along the first direction; a pre-tightening push rod, and the pre-tightening push rod includes The rod portion includes a clamping portion and a rod portion extending along the first direction, the rod portion includes a first rod end and a second rod end relative to each other, the clamping portion is located at the first rod end, and the clamping portion is tightly pressed against the top bead at least along the first direction; a force sensor, the force sensor includes a sensor through hole extending along the first direction, the sensor through hole is communicated with the top rod groove, the clamping portion and the rod portion of the pre-tightening top rod pass through the sensor through hole in sequence, so that the clamping portion is tightly pressed against the top bead at least along the first direction, wherein the force sensor includes a sensing portion, and the sensing portion is suitable for measuring the collision force when the hanging basket cylinder assembly collides with the collision portion.
[0006] Optionally, part of the rod portion of the pre-tightening push rod includes a push rod thread, part of the interior of the sensor through hole includes a through hole thread matching the push rod thread, and the pre-tightening push rod is screwed and connected to the force sensor through the push rod thread matching the through hole thread.
[0007] Optionally, the second end of the rod portion of the pre-tightening push rod is located outside the sensor through hole, and the second end of the rod portion is a hexagonal structure.
[0008] Optionally, the collision test device further includes a sleeve, the interior of the sleeve is a hollow structure, the push rod body is located in the hollow structure and the outer wall of the push rod body is in close contact with the inner wall of the hollow structure, and the collision part extends from the hollow structure to the outside of the hollow structure.
[0009] Optionally, the hollow structure of the sleeve includes a first hollow area and a second hollow area, the second hollow area is closer to the second part of the main body than the first hollow area, the inner diameter of the second hollow area is larger than the inner diameter of the first hollow area, the first part of the main body is located in the first hollow area, the second part of the main body is located in the second hollow area, and the outer diameter of the second part of the main body is larger than the outer diameter of the first part of the main body.
[0010] Optionally, the inner wall of the second hollow area of the sleeve includes a hollow area thread, the force sensor also includes a tightening part, the outer wall of the tightening part includes a tightening thread matching the hollow area thread, and the force sensor and the second hollow area are connected to the hollow area thread through the tightening thread.
[0011] Optionally, part of the outer wall of the sleeve includes a sleeve thread, the pressure vessel includes a pressure vessel internal thread matching the sleeve thread, and the collision test device is suitable for being fixedly connected to the pressure vessel through the sleeve thread.
[0012] Optionally, the collision test device further comprises one or more sealing rings, wherein the sealing rings are sleeved on the outer wall of the push rod body, and the sealing rings are located between the outer wall of the push rod body and the inner wall of the second hollow area.
[0013] Optionally, the collision test device further includes a charge amplifier and a data acquisition instrument, the force sensor includes a piezoelectric force sensor, the charge amplifier is suitable for converting the charge signal generated by the force sensor into a voltage signal, and the data acquisition instrument is suitable for acquiring the voltage signal.
[0014] On the other hand, the present application also proposes a reactor test piece, comprising: a plurality of collision test devices as described above; a hanging basket cylinder assembly, wherein the hanging basket cylinder assembly is located above the collision test device, and the hanging basket cylinder assembly includes a core support lower plate, and the core support lower plate is suitable for colliding with the collision part of the contact top rod in the collision test device; a support key, wherein the support key is located below the collision test device, and the support key is suitable for colliding with the core support lower plate; a pressure vessel, wherein the pressure vessel includes a fixing hole, the collision test device passes through the fixing hole and is fixedly connected to the fixing hole, and the hanging basket cylinder assembly, the support key and part of the collision test device are located inside the pressure vessel.
[0015] Compared with the prior art, the present application sets a contact push rod, a push ball, a pre-tightening push rod and a force sensor in the collision test device, measures the collision force between the hanging basket cylinder assembly and the support key by colliding the contact push rod with the hanging basket cylinder assembly, and sets a force sensor to accurately measure the collision force between the hanging basket cylinder assembly and the contact push rod under different flow conditions or operating conditions, thereby providing effective reference data for the in-pile work of a real reactor, thereby further ensuring the safe operation of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the accompanying drawings:
[0017] Figure 1 This is a schematic structural diagram of a collision test device in one embodiment of the present application;
[0018] Figure 2 This is a structural stereogram of a collision test device in one embodiment of the present application;
[0019] Figure 3 This is a structural cross-sectional view of a reactor test piece in one embodiment of the present application;
[0020] Figure 4 This is a top view of the structure of a reactor test piece in one embodiment of the present application. DETAILED DESCRIPTION
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.
[0022] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.
[0023] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0024] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.
[0027] This application refers to Figure 1 and Figure 2 A collision test device 10 (hereinafter referred to as "test device 10") is proposed. The test device 10 is suitable for Figures 3 and 4A reactor test piece 100 is proposed, and the reactor test piece 100 includes multiple test devices 10, a pressure vessel 101, a hanging basket cylinder assembly 102, and a support key 103. The test device proposed in any embodiment of the present application can measure the collision force between the hanging basket cylinder assembly and the support key of the reactor test piece under different flow conditions or operating conditions, such as the above-mentioned collision device 10. In order to more clearly explain the test environment of the test device 10, we will first combine Figures 3 and 4 The specific structure of the reactor test piece 100 is briefly introduced.
[0028] Reference Figures 3 and 4 , Figure 3 and Figure 4 The specific structure of other components in the reactor test piece 100 is shown in FIG. 1 . In the reactor test piece 100, the pressure vessel 101 includes a plurality of fixing holes 1011. When the test piece 10 is assembled (see FIG. 1 ), the pressure vessel 101 includes a plurality of fixing holes 1011. Figure 2 When the test device 10 is installed, the test device 10 can pass through the fixing hole 1011 and be fixedly connected to the fixing hole 1011. The hanging basket cylinder assembly 102 is located above the test device 10, and the hanging basket cylinder assembly 102 includes a core support lower plate 1021, and the core support lower plate 1021 is suitable for colliding with the collision portion 21 of the contact top rod 11 in the test device 10; the support key 103 is located below the test device 10, and the support key 103 is suitable for colliding with the core support lower plate 1021. The hanging basket cylinder assembly 102, the support key 103 and part of the collision test device 10 are located inside the pressure vessel 101. During the actual test process, the hanging basket cylinder assembly 102 will collide with the test device 10 and the support key 103 under certain pressure and moving water inside the reactor. At this time, the collision force borne by the support key 103 is equal to the collision force borne by the collision test device 10. Therefore, the collision force between the support key 103 and the hanging basket cylinder assembly 102 can be further reflected by measuring the collision force of the test device 10.
[0029] Next, the specific structure of the collision test device 10 will be described in detail. Figure 1 and Figure 2 As shown, the test device 10 mainly includes a contact ejector pin 11, an ejector ball 12, a preload ejector pin 13, and a force sensor 14. The various components of the test device 10 will now be described in detail.
[0030] Specifically, the contact push rod 11 includes a collision portion 21 and a push rod body 22 extending along a first direction X. The push rod body 22 includes a first main body portion 211 and a second main body portion 212 that are opposite to each other. The collision portion 21 is located on one side of the first main body portion 211. The collision portion 21 is suitable for colliding with the hanging basket cylinder assembly 102. The second main body portion 212 is provided with a push rod groove 213. The top ball 12 is tightly against the inner wall of the push rod groove 213 at least along the first direction X. Exemplarily, the inner wall of the push rod groove 213 that is tightly against the top ball 12 includes an arc-shaped structure that fits with the outer wall of the top ball 12, so that the top ball 12 and the push rod groove 213 can better fit tightly. When the contact push rod 11 collides with the hanging basket cylinder assembly 102, the collision force can be better transmitted to the top ball 12. Exemplarily, the contact push rod 11 is a piston-type contact push rod.
[0031] Furthermore, the test device 10 further includes a pre-tightening push rod 13, which includes a pressing portion 23 and a rod portion 24 extending along a first direction X. The rod portion 24 includes a first rod end 241 and a second rod end 242 that are opposite to each other. The pressing portion 23 is located at the first rod end 241, and the pressing portion 23 abuts against the top bead 12 at least along the first direction X. By arranging the pressing portion 23 and the top bead 12 to abut against each other, when the contact push rod 11 collides with the hanging basket cylinder assembly 102, the contact push rod 11 can transmit the collision force to the top bead 12, and the top bead 12 can further transmit the collision force to the pre-tightening push rod 13.
[0032] In this embodiment, the test device 10 also includes a force sensor 14, which includes a sensor through hole 25 extending along the first direction X. The sensor through hole 25 is communicated with the push rod groove 213. The pressing portion 23 and the rod portion 24 of the pre-tightening push rod 13 pass through the sensor through hole 25 in sequence, so that the pressing portion 23 is tightly pressed against the push ball at least along the first direction X. The force sensor 14 includes a sensing portion, which is suitable for measuring the collision force when the hanging basket cylinder assembly 102 collides with the collision portion 21.
[0033] Furthermore, a portion of the rod portion 24 of the preload rod 13 includes a rod thread 243, and a portion of the sensor through-hole 25 includes a through-hole thread 251 that matches the rod thread 243. The preload rod 13 is screwed together with the force sensor 14 via the rod thread 243 that matches the through-hole thread 251. The second end 242 of the preload rod 13 is located outside the sensor through-hole 25. The second end 242 has a hexagonal structure, and the through-hole thread 251 and the rod thread 243 can be screwed together by rotating the second end 242. Using a conventional hexagonal structure as the second end 242 can further simplify the process and further improve the tightening stability of the through-hole thread 251 and the rod thread 243.
[0034] In this embodiment, when ejector ball 12 transmits the impact force to preload pin 13, preload pin 13 can further transmit the impact force to force sensor 14, whose sensing portion senses the impact force. Furthermore, testing apparatus 10 also includes a charge amplifier and a data acquisition device. The charge amplifier is adapted to convert the charge signal generated by the force sensor into a voltage signal, and the data acquisition device is adapted to acquire the voltage signal.
[0035] Specifically, when the force sensor 14 senses the collision force transmitted by the preloaded push rod 13, the force sensor 14 generates a charge signal, which is transmitted to the charge amplifier through a cable and converted into a voltage signal, and then the voltage signal is transmitted to the data acquisition instrument to display the actual collision force received by the contact push rod 11. Exemplarily, the force sensor includes a piezoelectric force sensor, which has the advantages of high rigidity and high frequency response of the sensor, and is suitable for dynamic measurement. Furthermore, the charge amplifier can adjust the range to adapt to the size of the required test signal, so it can meet both large-scale signal testing and small-scale signal testing. It can measure the size of the collision force when the hanging basket cylinder assembly 102 collides with the contact push rod 11 or the support key 103 within the maximum range, thereby improving the accuracy and flexibility of the measurement.
[0036] In this embodiment, the test device 10 also includes a sleeve 26, the interior of the sleeve 26 is a hollow structure, the top rod body 22 is located in the hollow structure and the outer wall of the top rod body 22 is in close contact with the inner wall of the hollow structure, and the collision part 21 extends from the hollow structure to the outside of the hollow structure, that is, the collision part 21 extends out of the sleeve 26 and is suitable for colliding with the core support lower plate 1021 in the hanging basket cylinder assembly 102.
[0037] Furthermore, the hollow structure of the sleeve 26 includes a first hollow area S1 and a second hollow area S2. The second hollow area S2 is closer to the second portion 212 of the main body than the first hollow area S1. The inner diameter of the second hollow area S2 is larger than the inner diameter of the first hollow area S1. The first portion 211 of the main body is located within the first hollow area S1, and the second portion 212 of the main body is located within the second hollow area S2. The outer diameter of the second portion 212 of the main body is larger than the outer diameter of the first portion 211 of the main body. By arranging the outer diameter of the second portion 212 of the main body to be larger than the outer diameter of the first portion 211 and the inner diameter of the second hollow area S2 to be larger than the inner diameter of the first hollow area S1, the contact push rod 11 can be stabilized within the sleeve 26 when it is impacted by the core support lower plate 1021, and will not move relative to the sleeve 26. This allows the collision force to be better transmitted to the force sensor 14, thereby improving the accuracy of the collision force measurement.
[0038] On the other hand, the inner wall of part of the second hollow area S2 of the sleeve 26 includes a hollow area thread, and the force sensor 14 also includes a tightening portion 131. The outer wall of the tightening portion 131 includes a tightening thread that matches the hollow area thread. The force sensor 14 and the second hollow area S2 are connected through the tightening thread and the hollow area thread, thereby ensuring that the force sensor 14 will not move relative to the sleeve 26 when receiving the collision force, and can better receive the collision force to improve the measurement accuracy.
[0039] Therefore, in the entire test device 10, after the collision portion 21 of the contact push rod 11 receives the collision, the collision force can be transmitted to the push ball 12 pressed against the second portion 212 of the main body. The push ball 12 can further transmit the collision force to the pre-tightening push rod 13 pressed against the push ball 12. The pre-tightening push rod 13 can transmit the collision force to the force sensor 14 by being fixed to the force sensor 14, thereby completing the measurement of the collision force.
[0040] In this embodiment, the test device 10 preferably further includes a plurality of sealing rings 15, which are sleeved on the outer wall of the first main body portion 211 of the push rod main body 22. The sealing ring 15 is located between the outer wall of the first main body portion 211 of the push rod main body 22 and the inner wall of the first hollow area S1. This can further increase the moving friction of the contact push rod 11 in the first hollow area S1, thereby ensuring that the contact push rod 11 does not move relative to the sleeve 26, thereby better transmitting the collision force to the force sensor 14 and improving the accuracy of the collision force measurement. On the other hand, the sealing ring 15 can also provide a waterproof seal for the collision test device 10, preventing the liquid in the pile from entering the force sensor 14 through the test device 10 and affecting the performance of the force sensor 14. In other embodiments of the present application, a sealing ring 15 can also be provided according to actual needs, and the present application does not impose any restrictions on this.
[0041] On the other hand, a portion of the outer wall of the sleeve 26 includes a sleeve thread 261, and the fixing hole 1011 of the pressure vessel 101 includes an internal pressure vessel thread that matches the sleeve thread 261. The collision test device 10 is adapted to be fixedly connected to the pressure vessel 101 via the sleeve thread 261. Furthermore, the sleeve 26 also includes a sleeve tightening portion 27. The sleeve tightening portion 27 is located outside the pressure vessel. When the test device 10 and the pressure vessel 101 are assembled, the sleeve tightening portion 27 can be tightened to achieve a fixed connection between the sleeve thread 261 and the fixing hole 1011 of the pressure vessel 101. Exemplarily, the sleeve tightening portion 27 has a hexagonal structure.
[0042] To better understand the structure of the test device 10, the following describes the installation method of the test device 10. In this embodiment, the sealing ring 15 is first placed on the first portion 211 of the main body of the contact push rod 11. The contact push rod 11 is then inserted into the sleeve 26, so that the collision portion 21 is located outside the hollow structure of the sleeve 26, while the first portion 211 of the main body is located in the first hollow area S1 of the hollow structure inside the sleeve 26, and the second portion 212 of the main body is located in the second hollow area S2 of the hollow structure inside the sleeve 26. Furthermore, the push ball 12 is placed inside the push rod groove 213 of the second portion 212 of the main body. The force sensor is then screwed into the second hollow area S2 of the sleeve 26, so that the force sensor 14 and the second hollow area S2 can be fixedly connected by tightening the thread and engaging with the thread of the hollow area. Finally, the pressing portion 23 and the rod portion 24 of the preload push rod 13 are sequentially passed through the sensor through-hole 25.
[0043] Furthermore, the assembled test device 10 is fixedly connected to the pressure vessel 101. Preferably, when the test device 10 and the pressure vessel 101 are fixedly assembled, the sleeve thread 261 can be fixed by wrapping the raw tape around the sleeve thread 261, and the sleeve tightening part 27 can be rotated by a wrench to fix the sleeve thread 261 and the fixing hole 1011. By wrapping the raw tape around the sleeve thread 261 during the tightening process, the waterproof sealing during assembly can be further improved, thereby further ensuring the safety, stability and accuracy of the test.
[0044] The following describes how the test device 10 measures collision force. It should be noted that during the process of securing the test device 10 to the pressure vessel 101, the abutting portion 23 and the rod portion 24 of the preload pin 13 merely pass through the sensor through-hole 25. At this point, the pin thread 243 of the rod portion 24 and the through-hole thread 251 in the sensor through-hole 25 are not yet tightened together.
[0045] In this embodiment, at the start of measurement, the push rod thread 243 of the preload push rod 13 and the through-hole thread 251 are first tightened together. At this point, the abutting portion 23 of the preload push rod 13 can abut against the push ball 12 along the first direction X and apply a tensile force to the force sensor 14. At this point, the force sensor 14 will display a tensile force value. Preferably, after the force sensor 14 displays the tensile force value, the tensile force value of the force sensor 14 can be reset to zero through a setting.
[0046] Furthermore, the hanging basket cylinder assembly 102 in the reactor test piece 100 will collide with the collision portion 21 of the contact push rod 11 during the test. After the collision, the collision portion 21 of the contact push rod 11 can transmit the collision force to the top bead 12. The top bead 12 further transmits the collision force to the pre-tightening push rod 13 that is tightly against the top bead 12. Finally, the pre-tightening push rod 13 transmits the collision force to the force sensor 14 by being fixed to the force sensor 14. Since the tension value given to the force sensor 14 by the pre-tightening push rod 13 has been cleared during the previous operation, the value displayed on the force sensor at this time is the value of the collision force. Those skilled in the art can also choose not to clear the tension value or set it to any other arbitrary value according to actual needs, and this application does not limit this.
[0047] The present application sets a contact push rod, a push ball, a pre-tightening push rod and a force sensor in a collision test device, measures the collision force between the hanging basket cylinder assembly and the support key by colliding the contact push rod with the hanging basket cylinder assembly, and sets a force sensor to accurately measure the collision force between the hanging basket cylinder assembly and the contact push rod under different flow conditions or operating conditions, thereby providing effective reference data for the in-pile work of a real reactor, thereby further ensuring the safe operation of the reactor.
[0048] The collision test device proposed in this application only needs to be combined with the local fictitious structure of the pressure vessel in the reactor to realize the embedded overall installation mode, which can avoid affecting the flow field distribution inside the reactor, thereby realizing the measurement of the collision force between the hanging basket cylinder assembly and the support key. The internal structural connection of the collision test device and the connection between it and the reactor pressure vessel are connected using bolts and other easy-to-disassemble tooling, which will not affect the fluid flow channel, and can further ensure the accuracy of the test while improving the convenience of the equipment. And by arranging the force sensor outside the pressure vessel, it can be waterproofed by structures such as sealing rings and raw tape, so the force sensor does not need to be waterproofed, thereby further reducing the difficulty of construction.
[0049] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely examples and do not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and revisions to the present application. Such modifications, improvements, and revisions are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.
[0050] At the same time, this application uses specific terms to describe the embodiments of this 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 this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.
[0051] Similarly, it should be noted that, in order to simplify the description of this application and thus facilitate understanding of one or more embodiments of the application, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of the individual embodiments disclosed above.
[0052] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values are as accurate as possible within the feasible range.
[0053] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.
Claims
1. A collision test device, suitable for a reactor test piece, the reactor test piece comprising a pressure vessel, a hanging basket cylinder assembly and a support key, characterized in that: The collision test device comprises: A contact mandrel, the contact mandrel comprising a collision portion and a mandrel body extending along a first direction, the mandrel body comprising a first main body portion and a second main body portion opposite to each other, the collision portion being located on one side of the first main body portion, the collision portion being configured to collide with the hanging basket cylinder assembly, and the second main body portion being provided with a mandrel groove; a top ball, the top ball being pressed against the inner wall of the top rod groove at least along the first direction; a pre-tightening ejector rod, the pre-tightening ejector rod comprising a pressing portion and a rod portion extending along the first direction, the rod portion comprising a first rod end and a second rod end opposite to each other, the pressing portion being located at the first rod end, the pressing portion pressing against the ejector ball at least along the first direction; A force sensor comprising a sensor through hole extending along the first direction, wherein the sensor through hole is communicated with the push rod groove, wherein the abutting portion and the rod portion of the pre-tightening push rod sequentially pass through the sensor through hole so that the abutting portion abuts against the push ball at least along the first direction, and the force sensor is suitable for measuring the collision force received by the sensor through hole.
2. The collision test device according to claim 1, characterized in that: Part of the rod portion of the pre-tightening push rod includes a push rod thread, and part of the sensor through hole includes a through hole thread matching the push rod thread. The pre-tightening push rod is screwed and connected to the force sensor through the push rod thread matching the through hole thread.
3. The collision test device according to claim 1, wherein: The second end of the rod portion of the pre-tightening push rod is located outside the sensor through hole, and the second end of the rod portion is a hexagonal structure.
4. The collision test device according to claim 1, wherein: It also includes a sleeve, the interior of the sleeve is a hollow structure, the push rod body is located in the hollow structure and the outer wall of the push rod body is in close contact with the inner wall of the hollow structure, and the collision part extends from the hollow structure to the outside of the hollow structure.
5. The collision test device according to claim 4, characterized in that: The hollow structure of the sleeve includes a first hollow area and a second hollow area, the second hollow area is closer to the second part of the main body than the first hollow area, the inner diameter of the second hollow area is larger than the inner diameter of the first hollow area, the first part of the main body is located in the first hollow area, the second part of the main body is located in the second hollow area, and the outer diameter of the second part of the main body is larger than the outer diameter of the first part of the main body.
6. The collision test device according to claim 5, characterized in that: The inner wall of the second hollow area of the sleeve includes a hollow area thread, the force sensor also includes a tightening part, the outer wall of the tightening part includes a tightening thread matching the hollow area thread, and the force sensor and the second hollow area are connected to the hollow area thread through the tightening thread.
7. The collision test device according to claim 4, characterized in that: Part of the outer wall of the sleeve includes a sleeve thread, the pressure vessel includes a pressure vessel internal thread matching the sleeve thread, and the collision test device is suitable for being fixedly connected to the pressure vessel through the sleeve thread.
8. The collision test device according to claim 5, characterized in that: It also includes one or more sealing rings, which are sleeved on the outer wall of the mandrel body and located between the outer wall of the mandrel body and the inner wall of the second hollow area.
9. The collision test device according to claim 1, wherein: It also includes a charge amplifier and a data acquisition instrument. The force sensor includes a piezoelectric force sensor. The charge amplifier is suitable for converting the charge signal generated by the force sensor into a voltage signal. The data acquisition instrument is suitable for acquiring the voltage signal.
10. A reactor test piece, characterized in that: include: A plurality of collision test devices according to any one of claims 1 to 9; a hanging basket cylinder assembly, the hanging basket cylinder assembly being located above the collision test device, the hanging basket cylinder assembly comprising a core support lower plate, the core support lower plate being adapted to collide with the collision portion of the contact mandrel in the collision test device; a support key, the support key being located below the collision test device and being adapted to collide with the core support lower plate; A pressure vessel comprises a fixing hole, the collision test device passes through the fixing hole and is fixedly connected to the fixing hole, and the hanging basket cylinder assembly, the support key and part of the collision test device are located inside the pressure vessel.