Force measuring device for water environment

Abstract

The invention provides a force measuring device for a water environment. The force measuring device comprises a water tunnel experiment section, a profiling tube bundle, a force measuring object, a tool assembly and a force sensor. The profiling tube bundle is installed in the water tunnel experiment section and comprises a cavity, the tool assembly comprises a connecting rod assembly, and the connecting rod assembly extends into the cavity of the profiling tube bundle. The force measuring object penetrates through the profiling tube bundle and is connected with the connecting rod assembly located in the cavity so that the fluid acting force borne by the force measuring object can be measured through the force sensor. The water tunnel experiment section, the profiling tube bundle and the force measuring object simulate a complex three-dimensional flow field of the heat exchange tube bundle of the steam generator, so that the testing authenticity of the fluid acting force borne by the foreign matter or the structural failure component is remarkably improved. The connecting rod assembly does not need to be influenced by fluid, so that the accuracy of the fluid acting force borne by the force measuring object is further improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger flow-induced vibration testing technology, and more particularly to a force measuring device for use in aquatic environments. Background Technology

[0002] In the operation system of a nuclear power plant, the steam generator (SG), as the core heat exchange equipment of the secondary loop, undertakes the critical task of efficiently transferring the heat generated by the reactor to the generator unit. Ensuring the stable operation of the steam generator is one of the core links in ensuring the reliable operation of the nuclear energy system. During the operation and maintenance of the steam generator, structurally failed components or loose parts left over from maintenance may become trapped inside the steam generator. These foreign objects move and collide under the scouring of fluids, causing repeated impacts and wear on the tube bundles inside the steam generator. This is an important cause of tube bundle fatigue, cracks, and even leaks, and a key hidden danger leading to unexpected shutdowns and safety accidents of the steam generator.

[0003] Summarizing the statistical characteristics of foreign objects that induce accidents and analyzing the causes and damage evolution mechanisms of these accidents are important research directions for ensuring the safe operation of steam generators. Classifying and statistically analyzing the material, shape, size, and distribution of different types of foreign objects within the steam generator can provide fundamental data support for establishing risk assessment models. Simultaneously, analyzing the hydrodynamic characteristics of foreign objects under water flow and their contact impact behavior with the tube bundle through water tunnel experiments is significant for revealing the essential mechanisms of foreign object damage and improving the structural design and operation and maintenance strategies of SG tube bundles. However, existing research mainly focuses on measuring the fluid forces acting on the tube bundles of steam generators. Research on the mechanical behavior of small foreign objects in the flow field within the steam generator under fluid influence is relatively lagging, especially regarding the lack of direct measurement devices for the instantaneous fluid forces acting on foreign objects in an aquatic environment. Summary of the Invention

[0004] This invention provides a force measuring device for aquatic environments, addressing the technical problem of the lack of direct measurement devices for instantaneous fluid forces on foreign objects in aquatic environments in existing research.

[0005] This invention provides a force measuring device for use in an aquatic environment. The force measuring device includes a water tunnel experimental section, a contoured tube bundle, a force measuring object, a tooling assembly, and a force sensor. The contoured tube bundle is installed within the water tunnel experimental section and includes a cavity. The force measuring object is located within the water tunnel experimental section. The tooling assembly is installed within the water tunnel experimental section and includes a connecting rod assembly extending into the cavity. The force sensor is installed in the tooling assembly and connected to the end of the connecting rod assembly opposite to the cavity. The force measuring object passes through the contoured tube bundle and connects to the connecting rod assembly located within the cavity to measure the fluid force applied by the force sensor.

[0006] In one embodiment of the present invention, the force measuring object is detachably connected to the connecting rod assembly.

[0007] In one embodiment of the present invention, the tooling assembly further includes a sleeve and an end cap. The sleeve is fixedly installed on the water tunnel experimental section, and the end cap is detachably connected to the sleeve. The connecting rod assembly is suspended in the sleeve and extends into the cavity. The force sensor is installed between the end cap and the connecting rod assembly.

[0008] In one embodiment of the present invention, the linkage assembly includes a connector and a connecting rod. One end of the connector is detachably mounted with the force sensor, and the other end of the connector is detachably connected to the connecting rod. The connecting rod extends into the cavity and is connected to the force measuring object.

[0009] In one embodiment of the present invention, the connecting rod assembly further includes a limiting groove and a limiting pin. One of the connector and the connecting rod is provided with the limiting groove, and the other of the connector and the connecting rod is inserted into the limiting groove. The limiting pin passes through the limiting groove to fix the connector and the connecting rod.

[0010] In one embodiment of the present invention, the connector and the connecting rod are coaxially arranged, and the coaxiality error between the connector and the connecting rod is not greater than 0.2 mm.

[0011] In one embodiment of the present invention, the connecting rod is coaxially arranged with the conformal tube bundle, the inner diameter of the conformal tube bundle is D, and the diameter of the connecting rod is d. Wherein, d≤0.3D.

[0012] In one embodiment of the present invention, along the axial direction of the conformal tube bundle, a plurality of connecting holes are provided at intervals on the conformal tube bundle, and the force measuring object passes through one of the connecting holes to connect to the connecting rod assembly.

[0013] In one embodiment of the present invention, a plug may be detachably installed on the connection hole to seal the connection hole.

[0014] In one embodiment of the present invention, the tooling assembly is made of stainless steel.

[0015] The beneficial effects of this invention are as follows: In the force measuring device for aquatic environments proposed in this invention, a contoured tube bundle and a force measuring object are set up in the water tunnel experimental section. This allows for the replication of the complex three-dimensional flow field of the heat exchange tube bundle of a steam generator in the laboratory, thereby significantly improving the accuracy of testing the fluid forces acting on foreign objects or structurally failed components. The connecting rod assembly of the tooling component is located inside the cavity of the contoured tube bundle, achieving a rigid connection between the force measuring object and the force sensor. The connecting rod assembly can more accurately transmit the fluid forces acting on the force measuring object, and the connecting rod assembly itself is not affected by the fluid, further improving the accuracy of the fluid forces acting on the force measuring object. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the force measuring device structure provided in one embodiment of the present invention; Figure 2 This is a partial structural cross-sectional view of the force measuring device provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the contoured tube bundle and the contoured tube sheet provided in one embodiment of the present invention; Figure 4 This is a cross-sectional view of the connection state between the connecting rod and the force measuring object provided in one embodiment of the present invention; Figure 5 This is an exploded view of the connecting rod assembly and force sensor portion provided in one embodiment of the present invention.

[0018] The attached figures are labeled as follows: 100. Water tunnel test section; 110. Test section cavity; 120. Contouring tube sheet; 121. Central hole; 200. Contouring tube bundle; 210. Cavity; 220. Connecting hole; 230. Hole plug; 300. Force measuring object; 400. Tooling assembly; 410. Sleeve; 420. End cap; 430. Connecting rod assembly; 431. Joint; 432. Connecting rod; 433. Limiting groove; 434. Limiting pin; 500. Force sensor. Detailed Implementation

[0019] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0022] Please see Figures 1 to 5 This invention provides a force measuring device for use in aquatic environments. By measuring the fluid forces acting on a force measuring object 300 (a conforming foreign object or structurally failed component) within the water environment of the heat exchange tube bundle in the conforming steam generator within the water tunnel experimental section 100, this invention addresses the technical problem of the lack of direct measurement devices for instantaneous fluid forces acting on foreign objects or structurally failed components in aquatic environments in existing research.

[0023] Please see Figure 1 and Figure 2The force measuring device provided by this invention includes a water tunnel experimental section 100, a contoured tube bundle 200, a force measuring object 300, a tooling assembly 400, and a force sensor 500. The water tunnel experimental section 100 adopts a closed-loop circulating water tunnel system as described in the prior art, with an experimental flow channel formed inside for fluid passage, typically including a transparent observation window, a cover plate, and other structures. The contoured tube bundle 200 is installed inside the water tunnel experimental section 100. The water tunnel experimental section 100 and the contoured tube bundle 200 are used to simulate the environment inside an existing steam generator and can be self-constructed without additional instructions. The water tunnel experimental section 100 includes an experimental section cavity 110 and a contoured tube sheet 120. The contoured tube bundle 200 is located inside the experimental section cavity 110, and the contoured tube sheet 120 is contoured to the tube sheet structure of a steam generator. The contoured tube sheet 120 is detachably installed on the upper part of the experimental section cavity 110 for connecting the contoured tube bundle 200. The number of contoured tube bundles 200 is not limited and can be multiple. The upper ends of the contoured tube bundles 200 are coaxially aligned with the corresponding central holes 121 on the contoured tube sheet 120 and are fixedly connected to the contoured tube sheet 120 by welding to simulate the structure of the tube array in a steam generator, thereby reproducing the complex three-dimensional flow field of the heat exchange tube bundle in a water tunnel experiment. The contoured tube bundles 200 are hollow tube structures, each with a cavity 210, which is coaxially aligned with and connected to the central holes 121.

[0024] Please see Figure 1 The force measuring object 300 is a foreign object, such as a structurally faulty component of the steam generator itself or loose parts left over from maintenance. The force measuring object 300 is located within the water tunnel test section 100. During the operation of the steam generator, small foreign objects tend to accumulate at the bottom of the tube bundle under gravity. Therefore, the force measuring object 300 is positioned at a predetermined height from the bottom of the test section cavity 110 to more closely resemble the actual engineering application scenario, thereby enabling the force measuring object 300 to effectively simulate the actual force and vibration response under water flow impact.

[0025] The tooling assembly 400 is installed in the water tunnel test section 100. The tooling assembly 400 includes at least a connecting rod assembly 430 for connecting the force measuring object 300 and the force sensor 500. The force sensor 500 is fixedly installed on the tooling assembly 400 and is located outside the water tunnel test section 100, connected to the end of the connecting rod assembly 430 opposite to the cavity 210. That is, one end of the connecting rod assembly 430 passes through the central hole 121 of the contoured tube plate 120 and extends outside the water tunnel test section 100, while the other end of the connecting rod assembly 430 extends coaxially with the contoured tube bundle 200 within the cavity 210. The force measuring object 300 passes through the contoured tube bundle 200 and connects to the connecting rod assembly 430 located within the cavity 210 to measure the fluid force it experiences via the force sensor 500. The force-measuring object 300 is located outside the contoured tube bundle 200, and its connecting end passes through the wall of the contoured tube bundle 200 into the cavity 210, so that the force-measuring object 300 is fixedly connected to the corresponding connecting rod assembly 430. The method of fixing the force-measuring object 300 to the connecting rod assembly 430 is not limited; for example, it can be a detachable connection such as a threaded connection, a pin-type expansion connection, or a slot-type locking connection, or a non-detachable connection such as bonding or welding, but is not limited thereto. It should be noted that the force-measuring object 300 has no direct contact with any wall of the contoured tube bundle 200, and the connecting rod assembly 430 has no physical contact with any wall of the contoured tube bundle 200 or the water tunnel experimental section 100, thereby ensuring that the force signal received by the force-measuring object 300 within the water tunnel experimental section 100 is not interfered with by external structures, so that the force sensor 500 can accurately measure the fluid force signal.

[0026] In this force measuring device, a contoured tube bundle 200 and a force measuring object 300 are set up within the water tunnel experimental section 100. This allows for the replication of the complex three-dimensional flow field of the heat exchange tube bundle in a steam generator within the laboratory, significantly improving the accuracy of testing the fluid forces acting on foreign objects or structurally failed components. The connecting rod assembly 430 of the tooling component 400 is located inside the cavity 210 of the contoured tube bundle 200, achieving a rigid connection between the force measuring object 300 and the force sensor 500. The connecting rod assembly 430 can more accurately transmit the fluid forces acting on the force measuring object 300, and the connecting rod assembly 430 itself is not affected by the fluid, further enhancing the accuracy of the fluid forces acting on the force measuring object 300.

[0027] During force measurement, water flows within the experimental cavity 110 of the water tunnel experimental section 100. Under the action of the flowing water, the force measuring object 300 generates a fluid force exerted by the fluid. This fluid force includes, but is not limited to, lift and drag. This fluid force is transmitted to the force sensor 500 via the connecting rod assembly 430, which acts as the force transmission medium. During this process, the connecting rod assembly 430 possesses sufficient rigidity to effectively prevent large deformations during measurement, ensuring accurate force transmission. The fluid force experienced by the force measuring object 300 can then be equivalently represented by the force signal measured by the force sensor 500. The sensing element inside the force sensor 500 converts the mechanical force transmitted by the connecting rod assembly 430 into an electrical signal output. The output signal of the force sensor 500 is acquired in real time using an existing data acquisition system. The obtained raw fluid force signal is filtered and zero-drift corrected to finally obtain the time-domain distribution of the lift and drag experienced by the force measuring object 300 within the water tunnel experimental section 100. It should be noted that the equipment, hardware, software and algorithms involved in the aforementioned data acquisition system, filtering process, zero drift correction, etc., can all refer to existing technologies, and will not be elaborated here.

[0028] Please see Figure 4 In one embodiment of the present invention, the force-measuring object 300 and the connecting rod assembly 430 are detachably connected. The detachable connection method between the force-measuring object 300 and the connecting rod assembly 430 is not limited; it can be any suitable connection structure type that achieves a stable connection between the force-measuring object 300 and the connecting rod assembly 430, such as a slotted connection, threaded connection, or plug-in connection, but is not limited thereto. The detachable connection between the force-measuring object 300 and the connecting rod assembly 430 allows for quick replacement of force-measuring object 300 models (failure component simulators) of different shapes / sizes, avoiding the need to disassemble the tooling assembly 400, shortening the experimental cycle, and improving the replacement efficiency of the force-measuring object 300.

[0029] Please see Figure 2In one embodiment of the present invention, the tooling assembly 400 further includes a sleeve 410 and an end cap 420. The sleeve 410 is a tubular structure, which can be a cylindrical hollow tube or a multi-segment welded stepped hollow tube. The sleeve 410 is located outside the water tunnel experimental section 100 and is fixedly installed on the water tunnel experimental section 100, that is, the sleeve 410 is coaxially installed on the profiled tube sheet 120 corresponding to the central hole 121. The connection method between the sleeve 410 and the profiled tube sheet 120 is not limited. It can be a welded connection, a flange connection, or a threaded connection, etc., as long as the sealing of the connection between the sleeve 410 and the profiled tube sheet 120 is ensured, and the water tightness of the overall structure of the tooling assembly 400 after installation in the water tunnel experimental section 100 is guaranteed. An end cap 420 is located at the end of the sleeve 410 opposite to the profiled tube plate 120 and seals the opening of the sleeve 410. The end cap 420 and the sleeve 410 can be detachably connected in any way, such as by threaded connection or flange connection. The chamber inside the sleeve 410 communicates with the cavity 210 through the central hole 121. The force sensor 500 is located in the chamber inside the sleeve 410 and is installed between the end cap 420 and the connecting rod assembly 430. That is, the upper part of the force sensor 500 is fixedly connected to the end cap 420, which can be by bolt connection or slot connection, etc. The lower part of the force sensor 500 is fixedly connected to one end of the connecting rod assembly 430. The other end of the connecting rod assembly 430 extends into the cavity 210 and is connected and fixed to the force measuring object 300, thereby suspending the connecting rod assembly 430 in the sleeve 410 and the cavity 210. It should be noted that the linkage assembly 430 being suspended within the sleeve 410 and cavity 210 means that the linkage assembly 430 has no direct contact with the inner wall of the sleeve 410, the contoured tube plate 120, or the contoured tube bundle 200. This allows for a more accurate transmission of the fluid force acting on the force-measuring object 300 to the force sensor 500 during implementation, resulting in more accurate measurement results from the force sensor 500. The end cap 420 is detachably connected to the sleeve 410, enabling the linkage assembly 430 to be disassembled, assembled, or replaced. This allows the linkage assembly 430 to be removed from its current position within the contoured tube bundle 200 and placed within it in other positions to obtain the fluid force acting on the force-measuring object 300 at different locations.

[0030] Please see Figure 5In one embodiment of the present invention, the connecting rod assembly 430 includes a connector 431 and a connecting rod 432. A force sensor 500 is detachably mounted on one end of the connector 431. Specifically, the connector 431 is suspended within the sleeve 410, and the connector 431 has a replaceable structure. That is, along the axial direction of the contoured tube bundle 200, the upper end of the connector 431 is detachably connected to the lower end of the force sensor 500 via bolts. The upper end of the force sensor 500 is bolted to the lower surface of the end cap 420. The lower end of the connector 431 is detachably connected to the connecting rod 432. The connecting rod 432 extends through the central hole 121 on the contoured tube plate 120 into the cavity 210 and connects to the force measuring object 300. The detachable connection between the connector 431 and the connecting rod 432 can be a pin connection or a threaded connection, as long as a rigid connection between the connector 431 and the connecting rod 432 is achieved to ensure accurate and stable force signal transmission. Force sensor 500 is typically a commercially available sensor type that meets experimental requirements. For example, force sensor 500 could be a Derson γ25-15NX6 sensor or an ATI Nano17 sensor. The interface structure of force sensor 500 is relatively fixed, making modification difficult. When using different models of force sensor 500, the structure of connector 431 and end cap 420 can be customized according to the specific model requirements. This allows for detachable connections between connector 431 and force sensor 500, as well as between end cap 420 and force sensor 500, without requiring adjustments to the connecting rod 432 and sleeve 410 of tooling assembly 400, reducing replacement difficulty. The structure of connector 431 is not limited and can be customized according to the interface structure and installation requirements of different force sensor models 500, thereby improving the adaptability and versatility of tooling assembly 400.

[0031] Please see Figure 5In one embodiment of the present invention, the detachable connection between the connector 431 and the connecting rod 432 is achieved by a pin insertion connection, which further improves the convenience of disassembly and assembly of the connector 431 and the connecting rod 432. The connecting rod assembly 430 also includes a limiting groove 433 and a limiting pin 434. One of the connector 431 and the connecting rod 432 is provided with a limiting groove 433, and the other of the connector 431 and the connecting rod 432 is inserted into the limiting groove 433. In this embodiment, along the axial direction of the contoured tube bundle 200, the end of the connecting rod 432 facing the connector 431 has a limiting groove 433. The lower end of the connector 431 is inserted into the limiting groove 433. When the lower end of the connector 431 is inserted to the bottom of the limiting groove 433, the limiting pin 434 passes through the limiting groove 433 in the horizontal direction, so as to connect and fix the connector 431 and the connecting rod 432 by means of a pin connection. The corresponding arrangement of the limiting groove 433 and the lower end of the connector 431 facilitates the insertion and fixing of the limiting pin 434 to the connector 431 and the connecting rod 432, improving assembly efficiency. In other embodiments, the limiting groove 433 can also be located at the lower end of the connector 431, with the upper end of the connector 431 inserted into the limiting groove 433, and the connector 431 and the connecting rod 432 fixedly connected by the limiting pin 434 as a transverse pin shaft.

[0032] Please see Figure 2 In one embodiment of the present invention, the connector 431 and the connecting rod 432 are coaxially arranged, and the coaxiality error between the connector 431 and the connecting rod 432 is no greater than 0.2mm, so as to eliminate the torque transmission deviation caused by the axial offset of the connecting rod assembly 430, and ensure that the fluid force on the force measuring object 300 is accurately transmitted to the force sensor 500 along the axial direction of the connecting rod assembly 430, thereby maintaining the consistency of the load direction and improving the dynamic response accuracy.

[0033] Please see Figure 4 In one embodiment of the present invention, the connecting rod 432 is coaxially arranged with the contoured tube bundle 200, the inner diameter of the contoured tube bundle 200 is D, and the diameter of the connecting rod 432 is d; wherein d≤0.3D. While ensuring sufficient rigidity of the connecting rod 432, a radial protective gap is formed between the connecting rod 432 and the inner wall of the cavity 210 of the contoured tube bundle 200. This gap size can accommodate the maximum expected amplitude of the force measuring object 300 during force measurement, effectively isolating the connecting rod 432 from the contact risk with the inner wall of the contoured tube bundle 200, eliminating interference forces caused by mechanical collisions from mixing into the measurement signal of the force sensor 500, and ensuring the accuracy of fluid force measurement.

[0034] Please see Figure 4In one embodiment of the present invention, a plurality of connecting holes 220 are provided at intervals along the axial direction of the conformal tube bundle 200. The force measuring object 300 passes through one of the connecting holes 220 and connects to the connecting rod assembly 430. Specifically, in this embodiment, there are three sets of connecting holes 220, which are arranged sequentially from low to high along the axial direction of the conformal tube bundle 200. Each set of connecting holes 220 consists of two holes, which are respectively opened at intervals on both sides of the conformal tube bundle 200 in the horizontal direction. The installation position can be flexibly selected according to the experimental height requirements and the direction of water flow. The connecting hole 220 connects the cavity 210 of the conformal tube bundle 200 with the experimental section cavity 110. The force measuring object 300 passes through the connecting hole 220 and is detachably connected to the connecting rod 432 in the cavity 210. The force measuring object 300 does not contact the hole wall of the connecting hole 220 to avoid affecting the measurement accuracy.

[0035] Please see Figure 4 In one embodiment of the present invention, a plug 230 may be detachably installed on the connecting hole 220 to seal the connecting hole 220. The structure of the plug 230 is not limited. When a water tunnel experiment is conducted, the connecting hole 220 through which no force measuring object 300 passes is sealed, thereby preventing water flow from directly impacting the connecting rod 432 in the cavity 210 and affecting the measurement accuracy of the influence sensor 500.

[0036] In one embodiment of the present invention, the tooling assembly 400 is made of stainless steel, that is, the sleeve 410, the end cap 420 and the connecting rod assembly 430 are made of stainless steel. Through the corrosion resistance and structural stability of stainless steel, the connecting rod assembly 430 is protected against fluid erosion under long-term immersion conditions in the water tunnel test section 100, avoiding additional measurement errors caused by rust deformation or mass loss, and maintaining the long-term reliability of the force transmission path.

[0037] The force measuring device proposed in this invention for aquatic environments incorporates a contoured tube bundle and a force-measuring object within a water tunnel experimental section. This allows for the replication of the complex three-dimensional flow field of a steam generator heat exchange tube bundle in a laboratory setting, significantly improving the accuracy of testing the fluid forces acting on foreign objects or structurally failed components. The connecting rod assembly of the tooling component is located inside the cavity of the contoured tube bundle, achieving a rigid connection between the force-measuring object and the force sensor. This connecting rod assembly can more accurately transmit the fluid forces acting on the force-measuring object, and since it is not affected by the fluid itself, it further enhances the accuracy of measuring the fluid forces acting on the force-measuring object. This addresses the technical problem of the lack of direct measurement devices for instantaneous fluid forces acting on foreign objects in aquatic environments in existing research.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A force measuring device for use in aquatic environments, characterized in that, include, Water tunnel experimental section; A contoured tube bundle, installed within the water tunnel experimental section, includes a cavity. The force-measuring object is located within the water tunnel experimental section. A tooling assembly is installed in the water tunnel experimental section, the tooling assembly including a connecting rod assembly that extends into the cavity; A force sensor is installed on the tooling assembly and connected to the end of the connecting rod assembly opposite to the cavity; The force measuring object passes through the contoured tube bundle and connects to the connecting rod assembly located in the cavity, so as to measure the fluid force it receives through the force sensor.

2. The force measuring device according to claim 1, characterized in that, The force measuring object is detachably connected to the connecting rod assembly.

3. The force measuring device according to claim 2, characterized in that, The tooling assembly also includes a sleeve and an end cap. The sleeve is fixedly installed on the water tunnel experimental section, and the end cap is detachably connected to the sleeve. The connecting rod assembly is suspended in the sleeve and extends into the cavity. The force sensor is installed between the end cap and the connecting rod assembly.

4. The force measuring device according to claim 1, characterized in that, The linkage assembly includes a connector and a connecting rod. One end of the connector is detachably mounted with the force sensor, and the other end of the connector is detachably connected to the connecting rod. The connecting rod extends into the cavity and connects to the force measuring object.

5. The force measuring device according to claim 4, characterized in that, The linkage assembly further includes a limiting groove and a limiting pin. One of the connector and the linkage is provided with the limiting groove, and the other of the connector and the linkage is inserted into the limiting groove. The limiting pin passes through the limiting groove to fix the connector and the linkage.

6. The force measuring device according to claim 4, characterized in that, The connector and the connecting rod are coaxially arranged, and the coaxiality error between the connector and the connecting rod is no greater than 0.2mm.

7. The force measuring device according to claim 4, characterized in that, The connecting rod is coaxially arranged with the conformal tube bundle, the inner diameter of the conformal tube bundle is D, and the diameter of the connecting rod is d; wherein, d≤0.3D.

8. The force measuring device according to claim 1, characterized in that, Along the axial direction of the contoured tube bundle, a plurality of connecting holes are provided at intervals on the contoured tube bundle, and the force measuring object passes through one of the connecting holes to connect to the connecting rod assembly.

9. The force measuring device according to claim 8, characterized in that, A plug can also be detachably installed on the connection hole to seal it.

10. The force measuring device according to claim 1, characterized in that, The tooling components are made of stainless steel.

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