Symmetrical ball screw basket actuator and its application method in hanger test

Abstract

The application discloses a symmetrical ball screw basket actuator and an application method thereof in a hanger test. The basket actuator comprises: a moving part, which is replaceably connected between a first rod part and a second rod part through a connecting part; the moving part comprises: a moving rod and a fixing part, the moving rod is connected with the fixing part, and the moving rod is movable relative to the fixing part in the axial direction of the hanger; a driving part, which is connected with the moving rod, drives the moving rod to move, so that the first rod part and the second rod part move away from or towards each other in the axial direction of the hanger; and a measuring device, which is used for detecting the load of the support hanger. According to the basket actuator, manual participation steps can be reduced, the on-site detection process can be greatly simplified, the risk of high-altitude operation and disassembly can be reduced, the detection efficiency and the detection accuracy can be improved; in addition, the in-situ online detection of the load and the performance of the support hanger can be realized, the detection result can truly reflect the working state of the support hanger in service, and the detection accuracy and reliability can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of support and hanger testing technology, and in particular to a symmetrical ball screw turnbuckle actuator and its application method in hanger testing. Background Technology

[0002] In power plants such as thermal power plants and nuclear power plants, piping systems rely heavily on supports and hangers to bear loads, constrain displacement, and limit vibration. The accuracy of the key performance characteristics of the supports (such as load deviation, constancy, and working load) directly affects the long-term safe operation of the piping system, and regular on-site performance tests and condition assessments of the supports and hangers are essential.

[0003] In existing technologies, in order to achieve the goal of on-site performance testing of in-service constant force hangers, a basket is typically used, and then displacement sensors and loading devices are sequentially installed below the basket to test the hanger's performance. However, these components need to be installed sequentially before testing can be performed, which results in low testing efficiency and too many human intervention factors, which in turn affects the testing accuracy. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a symmetrical ball screw turnbuckle actuator. This actuator can reduce manual intervention steps, thereby significantly simplifying the on-site inspection process, reducing the risks of high-altitude operations and disassembly / assembly, improving inspection efficiency and accuracy. Simultaneously, it can also achieve in-situ online detection of the load and performance of supports and hangers, thus ensuring that the inspection results truly reflect the in-service working condition of the supports and hangers, effectively improving inspection accuracy and reliability.

[0005] This invention also proposes a method for applying a symmetrical ball screw basket actuator in hanger testing.

[0006] According to a first aspect of the present invention, a symmetrical ball screw basket actuator is used to detect the performance of a support or hanger. The support or hanger includes: a pointer and a hanger rod. The hanger rod includes: a first rod portion, a second rod portion, and a connecting portion. One end of the first rod portion is connected to the pointer. The connecting portion is detachably connected between the first rod portion and the second rod portion. The end of the second rod portion away from the connecting portion is configured to be connected to a pipe. The basket actuator includes: an actuating element, which is alternatively connected to the connecting portion between the first rod portion and the second rod portion. The actuating element includes: a moving rod and a fixing element. The moving rod is connected to the fixing element and is movable relative to the fixing element in the axial direction of the hanger rod. A driving element is connected to the moving rod. The driving element drives the moving rod to move the first rod portion and the second rod portion in opposite or opposite directions along the axial direction of the hanger rod. A measuring device is used to detect the load of the support or hanger.

[0007] The symmetrical ball screw turnbuckle actuator of the present invention, by setting the actuating component, can reduce the number of manual steps, thereby greatly simplifying the on-site inspection process, reducing the risks of high-altitude operations and disassembly / assembly, improving inspection efficiency, and improving inspection accuracy. At the same time, since the actuating component replaces the original connecting part, this embodiment can realize in-situ online detection of the load and performance of the support and hanger, thereby ensuring that the inspection results truly reflect the in-service working status of the support and hanger, and effectively improving the inspection accuracy and reliability.

[0008] According to some embodiments of the present invention, the movable rod is a lead screw, and there are two movable rods. The fixing member is formed as a sleeve, and the sleeve has a first threaded portion and a second threaded portion arranged at intervals along the axial direction of the rod. The first threaded portion and the second threaded portion have opposite thread directions, and the two movable rods are respectively connected to the first threaded portion and the second threaded portion for transmission.

[0009] According to some embodiments of the present invention, the actuating element further includes: a ball bearing disposed between the lead screw and the sleeve.

[0010] According to some embodiments of the present invention, the measuring device includes a stress detection device fixed on the sleeve for detecting the axial strain value of the moving member.

[0011] According to some embodiments of the present invention, the stress detection device is a column strain gauge, and the axial direction of the column strain gauge is completely coincident with the axial direction of the suspension rod.

[0012] According to some embodiments of the present invention, the measuring device further includes a displacement detection device adapted to be connected to the pointer for detecting the absolute displacement of the support.

[0013] According to some embodiments of the present invention, the detection device further includes: a controller, which is communicatively connected to the displacement detection device and the stress detection device. The controller is internally provided with a data acquisition module and a data processing module. The data acquisition module is used to acquire and record the data of the axial strain value and the absolute displacement. The data processing module is used to calculate the load deviation, constantness deviation and working load range of the support based on the data of the axial strain value and the absolute displacement.

[0014] According to some embodiments of the present invention, the flower basket actuator further includes a connector, through which the movable rod is detachably connected to the first rod portion and the second rod portion.

[0015] According to some embodiments of the present invention, the connector is provided with a self-lubricating bushing inside.

[0016] According to a second aspect of the present invention, a method for applying a symmetrical ball screw turnbuckle actuator in a hanger test is provided for use with the symmetrical ball screw turnbuckle actuator described in the first aspect. The method includes: step S1, connecting the actuator between the first rod and the second rod; step S2, driving the moving member to move, and recording the absolute displacement of the hanger and the axial strain value of the actuator; step S3, calculating the load deviation, constantness deviation, and working load range of the hanger based on the absolute displacement and the axial strain value.

[0017] According to the application method of the present invention, rapid detection of supports and hangers can be achieved, thereby solving key technical problems such as low efficiency, poor accuracy, and insufficient safety of traditional testing methods, and providing reliable technical support for the safe operation and scientific maintenance of power plant pipeline systems.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is an assembly diagram of the flower basket actuator and the hanging rod according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the application method according to an embodiment of the present invention.

[0020] Figure label: 1. Flower basket actuator; 10. Action component; 11. Moving component; 12. Fixed component; 20. Driving components; 30. Measuring device; 31. Stress detection device; 40. Controller; 50. Connector; 2. Lifting rod; 21. First rod section; 22. Second rod section. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following is for reference. Figure 1 A symmetrical ball screw basket actuator 1 according to an embodiment of the first aspect of the present invention is described.

[0023] like Figure 1 As shown, according to a first aspect embodiment of the present invention, a symmetrical ball screw basket actuator 1 is used to detect the performance of a support bracket. The support bracket includes a pointer and a rod 2. The rod 2 includes a first rod portion 21, a second rod portion 22, and a connecting portion. One end of the first rod portion 21 is connected to the pointer. The connecting portion is detachably connected between the first rod portion 21 and the second rod portion 22. The end of the second rod portion 22 away from the connecting portion is configured to be connected to a pipe.

[0024] The flower basket actuator 1 includes an actuating element 10, a driving element 20, and a measuring device 30. The actuating element 10 is alternatively connected to the connecting part between the first rod portion 21 and the second rod portion 22. The actuating element 10 includes a moving rod and a fixing element 12. The moving rod is connected to the fixing element 12 and is movable relative to the fixing element 12 in the axial direction of the hanging rod 2. The driving element 20 is connected to the moving rod and drives the moving rod to move the first rod portion 21 and the second rod portion 22 in opposite directions or towards each other in the axial direction of the hanging rod 2. The measuring device 30 is used to detect the load of the support frame.

[0025] The phrase "the actuator 10 is interchangeably connected to the connecting part between the first rod 21 and the second rod 22" indicates that when a performance test of the support needs to be performed, the actuator 10 replaces the connecting part and is connected between the first rod 21 and the second rod 22 to complete the performance test of the support. After the test is completed, the connecting part is reassembled between the first rod 21 and the second rod 22 to restore the entire support to its original state.

[0026] "The driving component 20 moves by driving the moving rod to drive the first rod portion 21 and the second rod portion 22 to move in opposite directions or towards each other along the axial direction of the hanger 2." This means that, in this embodiment, by setting the actuating component 10 and the driving component 20, the length of the hanger 2 is adjusted to simulate the actual stress state of the support. It should be noted that the driving component 20 drives the moving rod to cause the first rod portion 21 and the second rod portion 22 to move in opposite directions or towards each other along the axial direction of the hanger 2. This not only simulates the actual stress state of the support but also avoids the support bearing additional bending moments, thereby improving load detection accuracy and enhancing the safety of the support during the detection process.

[0027] Specifically, when a performance test is required on the support and hanger, the operator disassembles the connecting part and then connects the moving rod of the actuator 10 to the first rod part 21 and the second rod part 22 respectively. Then, the drive component 20 is activated, which drives the moving rod to move, thereby causing the length of the entire hanger 2 to change. At the same time, the measuring device 30 measures the load on the support and hanger in real time during the change of the length of the hanger 2. Then, the operator evaluates the performance of the support and hanger based on the load.

[0028] In the existing technology, in order to achieve the purpose of on-site performance testing of in-service constant force hangers, a basket is generally used on the hanger rod 2, and then displacement sensors and loading devices are sequentially set below the basket to achieve the performance testing of the hanger. However, these components need to be installed sequentially before testing can be carried out, which results in low testing efficiency and too many human intervention factors, which in turn affects the testing accuracy.

[0029] In this embodiment, the only steps requiring manual intervention are replacing the connecting part and installing the testing device with the support. This reduces the number of manual intervention steps, thereby significantly simplifying the on-site testing process, reducing the risks of working at heights and disassembly / reassembly, improving testing efficiency, and enhancing testing accuracy. At the same time, since the actuator 10 replaces the original connecting part, this embodiment can achieve in-situ online testing of the support load and performance, thus ensuring that the test results truly reflect the in-service working status of the support and effectively improving testing accuracy and reliability.

[0030] According to the flower basket actuator 1 of the present invention, by setting the action component 10, the number of manual steps can be reduced, thereby greatly simplifying the on-site inspection process, reducing the risks of high-altitude operations and disassembly / assembly, improving inspection efficiency, and improving inspection accuracy. At the same time, since the action component 10 replaces the original connecting part, this embodiment can realize in-situ online detection of the load and performance of the support and hanger, thereby ensuring that the inspection results truly reflect the in-service working status of the support and hanger, and effectively improving the inspection accuracy and reliability.

[0031] According to some embodiments of the present invention, such as Figure 1As shown, the moving rods are lead screws, and there are two moving rods. The fixing member 12 is formed as a sleeve. The sleeve has a first threaded portion and a second threaded portion arranged at intervals along the axial direction of the lifting rod 2. The threads of the first threaded portion and the second threaded portion have opposite directions of rotation. The two moving rods are respectively connected to the first threaded portion and the second threaded portion for transmission. It can be understood that this embodiment uses two lead screws with opposite directions of rotation as moving rods, and then cooperates with the sleeve with the reverse threaded portion inside, so as to realize that the two moving rods move towards or away from each other along the axial direction. In this way, the design difficulty of the entire driving component 20 can be reduced, thereby reducing the production cost of the entire device.

[0032] Optionally, the drive component 20 includes a drive motor and a gear, wherein the drive motor drives the lead screw to rotate by rotating the drive gear.

[0033] Optionally, the sleeve is forged from alloy steel, and the outer surface of the sleeve is galvanized for rust prevention. The thickness of the electroplated zinc layer reaches Fe / Zn grade 8 to adapt to the power plant environment. The sleeve is formed into a regular cylindrical structure with uniform wall thickness, serving as the skeleton and outer shell of the entire device.

[0034] According to some embodiments of the present invention, the actuator 10 further includes: a ball bearing, which is arranged between the lead screw and the sleeve. It is understood that the moving rod and the ball bearing cooperate to form a ball screw, wherein the ball screw has low friction, high efficiency, high precision and long service life. Therefore, the actuator 10 including the ball bearing can further improve the movement accuracy of the moving member 11 and the service life of the actuator 10.

[0035] According to some embodiments of the present invention, such as Figure 1 As shown, the measuring device 30 includes a stress detection device 31, which is fixed on the sleeve and used to detect the axial strain value of the actuator 10. It is understood that this embodiment reflects the load on the support by detecting the stress value of the sleeve. Thus, when performing load testing on the support, only the connecting part needs to be disassembled and replaced with the actuator 10, eliminating the need to connect the stress detection device 31 to the hanger 2. This simplifies the testing process and increases the testing speed. Simultaneously, since the stress detection device 31 does not need to be repeatedly disassembled, the risk of damage to the basket actuator 1 is reduced, extending the service life of the basket actuator 1 and eliminating systematic errors caused by temporary installation or differences in installation posture each time.

[0036] It should be noted that the stress detection device 31 can be a stress strain gauge or a bow-shaped sensor, etc., and there are no restrictions here.

[0037] According to some embodiments of the present invention, the stress detection device 31 is a column strain gauge, and the axial direction of the column strain gauge is completely coincident with the axial direction of the hanger 2. This ensures that the detection direction of the strain gauge is consistent with the actual force direction of the support, thereby enabling accurate detection of axial strain and avoiding detection errors caused by directional deviation, thus improving load detection accuracy. It should be noted that the strain gauge needs to be installed under no-load conditions.

[0038] According to some embodiments of the present invention, the measuring device 30 further includes a displacement detection device adapted to be connected to a pointer for detecting the absolute displacement of the support. By cooperating the displacement detection device with the existing pointer of the support, the displacement detection device can directly and accurately acquire data on the absolute displacement of the support during loading, thereby achieving synchronous detection of load and displacement.

[0039] According to some embodiments of the present invention, such as Figure 1 As shown, the flower basket actuator 1 also includes a controller 40, which is communicatively connected to the displacement detection device and the stress detection device 31. The controller 40 is equipped with a data acquisition module and a data processing module. The data acquisition module is used to acquire and record the axial strain value and absolute displacement data, and the data processing module is used to calculate the load deviation, constantness deviation and working load range of the support based on the axial strain value and absolute displacement data.

[0040] The controller 40 connects the displacement detection device and the stress detection device 31, enabling the controller 40 to synchronously receive and collect data on the axial strain and absolute displacement of the support, thereby avoiding system errors caused by asynchronous acquisition and improving the consistency and reliability of the detection data. The data acquisition module and data processing module further enhance the automation of the entire basket actuator 1, reduce manual intervention, and thus significantly improve detection efficiency and accuracy.

[0041] Optionally, the controller 40 also includes a control box, in which electronic components and cables are arranged. It should be noted that the control box needs to meet the requirements of the power plant environment for waterproofing, dustproofing, and shockproofing.

[0042] Optionally, the controller 40 is equipped with dedicated testing software and a data management module. The data management module includes a data acquisition module and a data processing module. The testing software has dedicated testing modes such as constant force hanger constancy test, spring hanger stiffness test, and load deviation verification, and can automatically control the testing process. The data management module can display and record load-displacement curves in real time, automatically calculate key indicators such as load deviation, constancy, and working load range, and automatically generate standardized reports, such as test curves, performance parameters, and environmental data. The reports can be exported in PDF format and uploaded to the power plant equipment management system via wireless network.

[0043] According to some embodiments of the present invention, such as Figure 1 As shown, the turnbuckle actuator 1 also includes a connector 50, through which the moving rod is detachably connected to the first rod portion 21 and the second rod portion 22. This improves the ease of connection and disconnection between the turnbuckle actuator 1 and the first rod portion 21 and the second rod portion 22, increasing the detection rate of the turnbuckle actuator 1. Simultaneously, the connector 50 allows the turnbuckle actuator 1 to be quickly moved between different supports and hangers to obtain reliable data, thus providing an unprecedentedly efficient means of assessing the mechanical state of the entire piping system. Exemplarily, the connector 50 can be a threaded connector 50 or other quick-connect connector 50.

[0044] According to some embodiments of the present invention, a self-lubricating bushing is provided inside the connector 50. This reduces the installation friction between the connector 50 and the moving rod or the first rod portion 21 or the second rod portion 22, thereby reducing mutual wear and increasing the service life of the basket actuator 1.

[0045] According to the second aspect of the present invention, an application method is used for the flower basket actuator 1 according to the embodiment of the first aspect, such as... Figure 2 As shown, the application methods include: Step S1: Connect the actuator 10 between the first rod 21 and the second rod 22; Step S2: Drive the moving part 11 to move, and record the absolute displacement of the support and the axial strain value of the moving part 10; Step S3: Based on the absolute displacement and axial strain values, calculate the load deviation, constantness deviation, and working load range of the support and hanger.

[0046] Specifically, when the support bracket needs to be tested, the operator first hoists the basket actuator 1 to the test position, then removes the connecting part, and connects the actuator 10 to the first rod 21 and the second rod 22 respectively through the connector 50.

[0047] Then, the drive unit 20 is activated, which drives the two moving parts 11 to move synchronously towards or away from each other, enabling the moving parts 11 to move according to the test parameters. For example, the test parameters could be a stroke of ±40mm and a speed of 10mm / min. Simultaneously, the stress detection device 31 measures stress changes in real time, and the displacement detection device measures displacement changes in real time. It should be noted that the stress values ​​detected by the stress detection device 31 and the displacement data detected in real time by the displacement detection device are transmitted to the data acquisition system for recording in real time.

[0048] After the test, the data processing module automatically calculates the load deviation, constancy deviation, and working load range of the supports based on the absolute displacement and axial strain values, and generates a standardized test report. It should be noted that the report typically includes test data, curves, environmental parameters, and installation quality records. This improves the standardization of testing and provides a high-quality data foundation for digitization.

[0049] Optionally, the controller 40 also includes a display panel that can display the force-displacement curve in real time during testing and can display the results compared with the design curve.

[0050] According to the application method of the present invention, rapid detection of supports and hangers can be achieved, thereby solving key technical problems such as low efficiency, poor accuracy, and insufficient safety of traditional testing methods, and providing reliable technical support for the safe operation and scientific maintenance of power plant pipeline systems.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A symmetrical ball screw turnbuckle actuator for detecting the performance of a support bracket, the support bracket comprising: A pointer and a boom (2), the boom (2) comprising: a first rod portion (21), a second rod portion (22), and a connecting portion, one end of the first rod portion (21) being connected to the pointer, the connecting portion being detachably connected between the first rod portion (21) and the second rod portion (22), the end of the second rod portion (22) away from the connecting portion being configured to be connected to a pipe, characterized in that the basket actuator (1) comprises: An actuating element (10) is alternatively connected to the connecting part between the first rod part (21) and the second rod part (22). The actuating element (10) includes a moving rod and a fixing member (12). The moving rod is connected to the fixing member (12), and the moving rod is movable relative to the fixing member (12) in the axial direction of the lifting rod (2). A driving member (20) is connected to the moving rod. The driving member (20) drives the moving rod to move so as to drive the first rod part (21) and the second rod part (22) to move in opposite directions or towards each other along the axial direction of the lifting rod (2). A measuring device (30) is used to detect the load on the support.

2. The symmetrical ball screw turnbuckle actuator according to claim 1, characterized in that, The moving rod is a lead screw, and there are two moving rods. The fixing member (12) is formed as a sleeve. The sleeve has a first threaded part and a second threaded part arranged at intervals along the axial direction of the lifting rod (2). The first threaded part and the second threaded part have opposite thread directions. The two moving rods are respectively connected to the first threaded part and the second threaded part for transmission.

3. The symmetrical ball screw turnbuckle actuator according to claim 2, characterized in that, The actuator (10) further includes a ball bearing, which is arranged between the lead screw and the sleeve.

4. The symmetrical ball screw turnbuckle actuator according to claim 2, characterized in that, The measuring device (30) includes a stress detection device (31), which is fixed on the sleeve and is used to detect the axial strain value of the moving part (10).

5. The symmetrical ball screw turnbuckle actuator according to claim 4, characterized in that, The stress detection device (31) is a column strain gauge, and the axial direction of the column strain gauge is completely coincident with the axial direction of the rod (2).

6. The symmetrical ball screw turnbuckle actuator according to claim 4, characterized in that, The measuring device (30) further includes a displacement detection device, which is adapted to be connected to the pointer and used to detect the absolute displacement of the support.

7. The symmetrical ball screw turnbuckle actuator according to claim 6, characterized in that, The flower basket actuator (1) further includes a controller (40), which is communicatively connected to the displacement detection device and the stress detection device (31). The controller (40) is equipped with a data acquisition module and a data processing module. The data acquisition module is used to acquire and record the data of the axial strain value and the absolute displacement. The data processing module is used to calculate the load deviation, constantness deviation and working load range of the support based on the data of the axial strain value and the absolute displacement.

8. The symmetrical ball screw turnbuckle actuator according to claim 2, characterized in that, The flower basket actuator (1) further includes a connector (50), through which the moving rod is detachably connected to the first rod portion (21) and the second rod portion (22).

9. The symmetrical ball screw turnbuckle actuator according to claim 8, characterized in that, The connector (50) is equipped with a self-lubricating bushing.

10. A method for applying a symmetrical ball screw turnbuckle actuator in a hanger test, used for the symmetrical ball screw turnbuckle actuator according to any one of claims 1-9, characterized in that, The application method includes: Step S1: Connect the actuating element (10) between the first rod portion (21) and the second rod portion (22); Step S2: Drive the moving part (11) to move, and record the absolute displacement of the support and the axial strain value of the moving part (10); Step S3: Based on the absolute displacement and the axial strain value, calculate the load deviation, constantness deviation and working load range of the support.

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