Impact signal triggering device and monitoring system

Abstract

The application belongs to the technical field of nuclear power plant daily maintenance equipment, and provides an impact signal triggering device, which comprises a body and an extension rod, the body comprises a shell and an impact head, a force sensor, an elastic element, a guide ring and a driving shaft arranged in the shell, the driving shaft passes through the guide ring and is connected with the impact head, the elastic element is sleeved on the driving shaft and is arranged between the guide ring and the impact head, the force sensor is connected with the impact head, and the force sensor is electrically connected with an upper device through a signal connector, a triggering mechanism is further arranged on the body, the triggering mechanism is used for controlling the driving shaft to release the compression force storage of the elastic element and make the impact head pop out, a connecting lug is further arranged on the body, and the extension rod is detachably connected with the connecting lug. The application further provides a monitoring system adopting the impact signal triggering device. The application aims to solve the technical problem that the existing on-site simulation foreign matter impact signal detection equipment cannot adapt to complex nuclear island environment operation.

Description

Technical Field

[0001] This application belongs to the technical field of routine maintenance equipment for nuclear power plants, and particularly relates to an impact signal triggering device and monitoring system. Background Technology

[0002] During the routine maintenance and commissioning of nuclear power plant vibration and loose component monitoring systems in the operation and commissioning phase, the nuclear power plant primary loop loose component and vibration monitoring system (hereinafter referred to as the KIR system) monitors loosening events occurring in the reactor primary loop area and the vibration of in-core components in real time, effectively identifying and providing complete records, playing a crucial role in the safe operation of the reactor. Currently, piezoelectric sensor-based loose component and vibration monitoring systems are widely used in the construction and operation of various nuclear power plants. During nuclear power plant commissioning and operation and maintenance, in order to regularly check the performance of KIR system probes and channels, maintenance personnel need to simulate foreign object impact signals on-site to ensure the availability of system probes and channels, thereby ensuring the safe and stable operation of the unit.

[0003] However, because the testing equipment requires manual operation to trigger actions, there are testing locations in the complex nuclear island environment that maintenance personnel cannot directly access, preventing them from carrying out testing operations. Current solutions involve erecting temporary scaffolding or using ladders for assistance, but setting up these auxiliary devices in the nuclear island environment is prone to safety risks.

[0004] It is evident that the existing detection equipment is unable to adapt to the complex nuclear island environment, which is a technical problem that urgently needs to be solved in the operation and maintenance of nuclear power plants. Summary of the Invention

[0005] The purpose of this application is to provide an impact signal triggering device and monitoring system to solve the technical problem that existing field simulation foreign object impact signal detection equipment cannot adapt to the complex nuclear island environment.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides an impact signal triggering device, comprising:

[0008] The body includes a housing and an impact head, a force sensor, an elastic element, a guide ring, and a drive shaft disposed within the housing. The drive shaft passes through the guide ring and is connected to the impact head. The elastic element is sleeved on the drive shaft and disposed between the guide ring and the impact head. The force sensor is connected to the impact head and is electrically connected to a host device via a signal connector.

[0009] The main body is also provided with a triggering mechanism, which is used to control the drive shaft to release the compressive force of the elastic element and eject the impact head;

[0010] The extension rod is provided with a connecting ear on the main body, and the extension rod and the connecting ear are detachably connected.

[0011] This design facilitates the replacement of manual striking operations, ensuring more uniform striking force and improving the protection of the equipment being inspected. The force sensor transmits simulated impact data to higher-level equipment via signal connectors, providing quantifiable baseline data. Furthermore, for inspection locations inaccessible to maintenance personnel, an extension rod can be installed on the main unit, allowing operation of the triggering device. This effectively overcomes the complex nuclear island operating environment, thereby reducing safety risks.

[0012] The installation structure of the extension rod is improved. The connecting lug has a mounting groove and mounting holes on both sides of the mounting groove. The connecting end of the extension rod has a connector for embedding into the mounting groove, and the connector has a threaded hole. The impact signal triggering device also includes a locking component, which has a threaded shaft for connecting the mounting hole and the threaded hole. Therefore, the installation structure of the extension rod is simple, the modification cost is low, and it is easy to assemble and disassemble, making it easy to operate.

[0013] In one embodiment, the connector is an arc-shaped head, and the extension rod can be rotated within the mounting groove to adjust the angle between it and the body. This creates a hinge structure between the extension rod and the connecting ear, facilitating flexible adjustment of the angle between the extension rod and the body, effectively adapting to different detection positions or operating angles.

[0014] An improvement is made to the structure of the rotary locking component, which has a pair of operating arms for manual operation. These operating arms are symmetrically arranged on the rotary locking component with the threaded shaft as the central axis. This allows the operator to perform forward or reverse turning operations on the rotary locking component using these operating arms, improving operational efficiency.

[0015] Another improvement is made to the structure of the rotary locking component, which is now a knob with anti-slip texture on its outer periphery. This facilitates manual operation and makes it easier to use.

[0016] In one embodiment, the extension rod is a telescopic rod, comprising multiple sleeves sequentially connected together. This allows for adjustment of the extension rod's length while also enabling it to be stowed away to save space, effectively improving its telescopic performance.

[0017] The triggering mechanism on the main body is improved. The triggering mechanism includes a trigger head located at the front end of the housing, through which the impact head protrudes outside the housing. A latch is provided on the drive shaft, and a connecting rod is connected to the trigger head. The connecting rod has a hook for engaging with the latch. The trigger head is used to retract upon contact with the object being detected, driving the connecting rod to move, thereby triggering the hook to separate from the latch and release the impact head. Therefore, the triggering mechanism used in the triggering device of this application eliminates the need for direct manual operation, making it suitable for use in conjunction with an extension rod at detection positions inaccessible to maintenance personnel. By extending the main body of the triggering device to the detection position using the extension rod, the trigger head can contact the object being detected to trigger the action, effectively improving adaptability to the working environment.

[0018] In one embodiment, the hook is movably connected to the connecting rod, and the body also includes a transmission component connected to the hook and extending to the extension end of the extension rod. Thus, by adding an extension rod to the body, the impact head can be directly triggered via a transmission component such as a wire rope, effectively improving the accuracy of the triggering operation.

[0019] In one embodiment, the body further includes a mounting base for mounting the impact head. The mounting base is connected to the drive shaft, and the detection end of the force sensor contacts the mounting base. The impact head is detachably mounted on the mounting base. This allows for the replacement of impact heads made of materials with different hardness on the mounting base, thereby adapting to different objects being tested and achieving different striking force adjustments, effectively improving the protection of the tested equipment.

[0020] An improvement is made to the electrical connection structure of the force sensor, wherein the signal connector is a cable, thereby realizing a wired connection with the host device and transmitting the detection data of the force sensor to the host device through the cable.

[0021] Another improvement is made to the electrical connection structure of the force sensor, wherein the signal connector is a wireless communication module, thereby realizing a wireless connection with the host device and sending the detection data of the force sensor to the host device through the wireless communication module.

[0022] Secondly, this application also provides a monitoring system, including a display terminal and the aforementioned impact signal triggering device. The display terminal is electrically connected to the force sensor in the impact signal triggering device via the signal connector. The display terminal includes a storage module and a display screen. The storage module is used to record the detection data received from the force sensor and display it on the display screen. This provides a visual representation of the detection data, which is beneficial for providing quantitative basic data for performance testing of KIR system probes during the commissioning and operation and maintenance phases of nuclear power plants.

[0023] The beneficial effects of the impact signal triggering device and monitoring system provided in this application are as follows: Compared with the prior art, the impact signal triggering device of this application is beneficial for replacing manual striking operations, making the striking force uniform and improving the protection effect on the tested equipment. A force sensor is installed inside the triggering device body, which is connected to the impact head, and the detection data of the simulated impact from the impact head is transmitted to the upper-level equipment. This is beneficial for providing quantitative basic data for evaluating the performance of KIR system probes during the commissioning and operation and maintenance phases of nuclear power plants.

[0024] For detection locations that maintenance personnel cannot directly access, an extension rod can be installed on the main body of the impact signal triggering device. The triggering device can then be operated using the extension rod. This minimizes the safety risks associated with additional work such as setting up temporary scaffolding or moving ladders in the complex nuclear island environment, effectively overcoming the complex nuclear island operating environment, thereby improving operational efficiency and reducing safety risks.

[0025] The monitoring system described in this application is electrically connected to the force sensor in the impact signal triggering device via a display terminal. It collects detection data and presents it visually on the display terminal. This facilitates the quantification of detection data, thereby standardizing the testing process, improving the accuracy of debugging tests, and providing basic data support for the design of test standards and acceptance criteria. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A three-dimensional structural diagram of the impact signal triggering device provided in the embodiments of this application. Figure 1 ;

[0028] Figure 2 Schematic diagram of the internal structure of the impact signal triggering device body provided in the embodiments of this application Figure 1 ;

[0029] Figure 3 A three-dimensional structural diagram of the impact signal triggering device provided in the embodiments of this application. Figure 2 ;

[0030] Figure 4 A schematic diagram of the assembly structure of the connection part between the body of the impact signal triggering device and the extension rod provided in the embodiment of this application;

[0031] Figure 5 A partially enlarged structural diagram of the connection between the body of the impact signal triggering device and the extension rod provided in an embodiment of this application;

[0032] Figure 6 This is a partially enlarged structural diagram of the extension rod provided in an embodiment of this application;

[0033] Figure 7 Schematic diagram of the internal structure of the impact signal triggering device body provided in the embodiments of this application Figure 2 ;

[0034] Figure 8 Schematic diagram of the internal structure of the impact signal triggering device body provided in the embodiments of this application Figure 3 ;

[0035] Figure 9 This is a schematic diagram of the connection structure of various devices in the monitoring system provided in the embodiments of this application.

[0036] The following are the labeling elements in the figure:

[0037] 100 - Trigger mechanism;

[0038] 1-Body; 11-Housing; 12-Connecting ear; 121-Mounting slot; 122-Mounting hole; 13-Transmission component;

[0039] 2-Extension rod; 21-Connector; 211-Threaded hole; 22-Rod tube;

[0040] 3-Impact head; 31-Mounting base;

[0041] 4-Force sensor; 41-Signal connector;

[0042] 5-Elastic component;

[0043] 6-Guide ring;

[0044] 7-Drive shaft; 71-Snap block;

[0045] 8-Turning lock; 81-Threaded shaft; 82-Operating arm;

[0046] 9-Trigger head; 91-Connecting rod; 92-Hook. Detailed Implementation

[0047] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0048] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0049] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0050] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] For the on-site simulated foreign object impact signal detection equipment used during the commissioning and operation and maintenance of nuclear power plants to periodically check the performance of KIR system probes and channels, the current system commissioning process for domestic and foreign nuclear power units is basically the same. System channel tests are all conducted using traditional testing tools (such as specialized tools or explosion-proof copper hammers) by actually striking the pressure vessel, steam generator, or equipment casing. Channel tests require repeated striking from the cold test preparation stage, before hot test, before fuel loading, before unit criticality, and during unit overhaul, resulting in frequent tests and significant damage to the equipment surface. The disadvantages of the current approach are:

[0052] (1) Existing test tools are made of cemented carbide to ensure the effectiveness of their impact signals. However, this can damage the surface coating or paint layer of the equipment, and may even leave impact marks on some containers with low hardness, thus damaging the equipment.

[0053] (2) Although using an explosion-proof copper hammer can reduce the hardness of the striking tool to a certain extent and reduce the possibility of leaving marks on the equipment surface, the small space in the probe area may also damage the surrounding nuclear equipment during the striking process. At the same time, the force varies depending on the person striking, resulting in different signal triggering strengths. The test personnel cannot maintain the same striking force, thus making it impossible to judge the sensitivity of the probe. Furthermore, the test standard can only be analyzed qualitatively and cannot be evaluated quantitatively.

[0054] (3) Traditional testing tools are designed based on spring force and have relatively coarse scales. Because the striking force cannot be read in real time, the accuracy of the signal triggering of the testing tool cannot be guaranteed after long-term use.

[0055] In related technologies, there is a method of using a pendulum device to conduct on-site impact tests. This method uses metal balls of different masses on a dedicated platform at a set height to quantitatively simulate impact signals. The disadvantage of this method is:

[0056] (1) Some of the smaller metal spheres are small in size and are easy to lose or fall off, which poses a risk of being lost at the nuclear power plant site and thus forming foreign objects.

[0057] (2) Because it is a pendulum design, it has high requirements for the position and angle of the test object. For probes in places that are inaccessible to personnel, such as the top of a pressure vessel or the middle of a high-positioned steam generator, the use of this device is greatly limited and the desired test results cannot be obtained.

[0058] (3) The impact signal intensity needs to be calculated, which is not intuitive enough.

[0059] (4) Based on project experience, the knocking process will leave knocking marks on the surface of equipment such as pressure vessels and steam generator pumps.

[0060] Therefore, this application provides a novel impact signal triggering device and monitoring system. On the one hand, by using the monitoring system of this application to establish a communication connection with the impact signal triggering device, the detection data can be visualized, which is beneficial for providing quantitative basic data for evaluating the performance of KIR system probes during the commissioning and operation and maintenance phases of nuclear power plants. On the other hand, the impact signal triggering device can replace manual knocking for simulated foreign object impact detection, making the knocking force uniform. Especially for detection positions that operation and maintenance personnel cannot directly access, the structure of the triggering device is improved, effectively solving the problem that traditional on-site simulated foreign object impact signal detection equipment cannot adapt to the complex nuclear island environment. It will now be described in detail.

[0061] Please see Figure 1 The impact signal triggering device provided in this application embodiment includes a triggering device body 1 and an extension rod 2.

[0062] Please refer to the following: Figure 1 and Figure 2 The main body 1 of the impact signal triggering device includes a housing 11. Inside the housing 11 are an impact head 3, a force sensor 4, an elastic element 5, a guide ring 6, and a drive shaft 7. In this embodiment, the drive shaft 7 passes through the guide ring 6 inside the housing 11, and its front end is connected to the impact head 3. The rear end of the drive shaft 7 extends out of the housing 11 for manual operation. Preferably, a handle is provided on the rear end of the drive shaft 7 to allow for manual pulling.

[0063] The elastic element 5 can preferably be a spring. The elastic element 5 is sleeved on the drive shaft 7 and is disposed between the guide ring 6 and the impact head 3. It can be understood that the two ends of the elastic element 5 can respectively abut against the guide ring 6 and the impact head 3, and when the distance between the two shortens (such as when the drive shaft 7 is pulled back and drives the impact head 3 to move closer to the guide ring 6), the elastic element 5 will be compressed by pressure to store force; and when the elastic element 5 is released, it can push out the impact head 3 to simulate an impact action on the object being tested.

[0064] like Figure 2 As shown, the force sensor 4 is fixed on the drive shaft 7. This can be understood as the force sensor 4 being a ring that can be fitted and fixed onto the drive shaft 7. The force sensor 4 is connected to the impact head 3; specifically, the detection end of the force sensor 4 is in contact with the tail end of the impact head 3. The force sensor 4 is electrically connected to a host device (such as the control terminal or display terminal in the aforementioned monitoring system) via a signal connector 41, thereby achieving communication with the host device and sending the detection data to it.

[0065] like Figure 2 As shown, the main body 1 is also provided with a trigger mechanism 100, which is used to control the drive shaft 7 to release the compressive force stored in the elastic element 5 to eject the impact head 3. The trigger mechanism 100 can preferably be a trigger mounted on the main body 1, or it can be other control mechanisms that can release the elastic element 5, thereby releasing the elastic element 5 to drive the impact head 3 to output a simulated impact action on the object being tested.

[0066] Please refer to the following: Figure 1 and Figure 3 The main body 1 is also equipped with a connecting ear 12, and the extension rod 2 is detachably connected to the connecting ear 12. The extension rod 2 is made as an accessory and can be installed on the main body 1 of the impact signal triggering device according to the needs of the working environment. This allows maintenance personnel to operate the triggering device using the extension rod 2, which helps to overcome the detection position that maintenance personnel cannot directly access.

[0067] Compared with the prior art, the impact signal triggering device provided in this application embodiment is a small, manually operable striking device. By utilizing the triggering mechanism 100 on the triggering device, the compression force of the elastic element 5 can be released to eject the impact head 3, thereby simulating an impact action on the object being tested. This effectively replaces manual striking operations, resulting in uniform striking force and improving the protection effect on the tested equipment.

[0068] A force sensor 4 is installed inside the trigger device body 1 and connected to the impact head 3. The force sensor 4 can transmit the detection data of the simulated impact of the impact head 3 to the upper device through the signal connector 41, which is beneficial to provide quantitative basic data for evaluating the performance test of the KIR system probe during the commissioning and operation and maintenance phase of nuclear power plants.

[0069] For detection locations that maintenance personnel cannot directly access, an extension rod 2 can be installed on the main body 1 of the impact signal triggering device, and the triggering device can be operated using the extension rod 2. This minimizes the safety risks associated with additional work such as setting up temporary scaffolding or moving ladders in the complex nuclear island environment, effectively solving the problem that traditional on-site simulated foreign object impact signal detection equipment cannot adapt to the complex nuclear island environment, thereby improving work efficiency and reducing safety risks.

[0070] For the installation structure of extension rod 2, please refer to one embodiment of this application. Figure 3 , Figure 4 and Figure 5 The impact signal triggering device body 1 provided in this application embodiment has a mounting groove 121 and mounting holes 122 located on both sides of the mounting groove 121 on the connecting ear 12. Correspondingly, the extension rod 2 has a connecting end for connecting with the connecting ear 12 with a connector 21 for embedding into the mounting groove 121, and the connector 21 has a threaded hole 211.

[0071] The impact signal triggering device of this application embodiment also includes a rotary locking member 8, which is provided with a threaded shaft 81 for passing through the mounting hole 122 and the threaded hole 211.

[0072] During installation, the connector 21 of the extension rod 2 can be first inserted into the mounting groove 121 of the connecting ear 12, so that the threaded hole 211 on the connector 21 corresponds to the mounting holes 122 on both sides of the mounting groove 121. Then, a locking member 8 is installed on the connecting ear 12, so that the threaded shaft 81 on the locking member 8 passes through the mounting hole 122 on the connecting ear 12 and is threadedly connected to the threaded hole 211 on the connector 2 of the extension rod 2. Finally, the connector 21 is fixed on the connecting ear 12 by rotating the locking member 8, thereby completing the installation and connection of the extension rod 2 and the impact signal triggering device body 1.

[0073] When disassembling the extension rod 2, the locking member 8 can be rotated in the opposite direction to release the fixing of the connector 21, so that the extension rod 2 can be separated from the connector ear 12, thereby making it easy to remove the extension rod 2 from the body 1 of the impact signal triggering device.

[0074] As can be seen, the extension rod 2 has a simple installation structure, low modification cost, and is easy to install and disassemble, making it easy to operate. Maintenance personnel can install it on the main body 1 of the impact signal triggering device in a timely manner according to the actual situation of the on-site working environment; when it is not needed, the extension rod 2 can also be quickly removed for easy storage, effectively improving work efficiency.

[0075] Preferably, such as Figure 4 and Figure 5 As shown, the connector 21 on the extension rod 2 can preferably be an arc-shaped head. In this embodiment, the extended end of the connector 21 can preferably be spherical, so that the extension rod 2 can be adjusted to adjust the included angle with the body 1 by rotating the connector 21 in the mounting groove 121.

[0076] In actual operation, the connector 21 can be unlocked by operating the rotary locking piece 8, the angle between the extension rod 2 and the body 1 can be adjusted, and then the connector 21 can be locked onto the connector ear 12 after adjustment.

[0077] In this way, the connection between the extension rod 2 and the connecting ear 12 forms a hinge structure, which is conducive to the flexible adjustment of different angles between the extension rod 2 and the body 1, effectively adapting to the usage requirements of different detection positions or different operating angles, thereby improving the adaptability to different working environments.

[0078] For the specific structure of the rotary locking component 8, please refer to the embodiments of this application. Figure 4 and Figure 5 The rotary locking component 8 also has a pair of operating arms 82 for manual operation. These operating arms 82 are symmetrically arranged on the rotary locking component 8 with the threaded shaft 81 as the central axis. This allows the operator to perform forward or reverse turning operations on the rotary locking component 8 using the pair of operating arms 82, thereby improving operating efficiency.

[0079] In other embodiments (not shown in the figure), the rotary locking element 8 can also be a knob, and the outer periphery of the rotary locking element 8 has anti-slip texture, which is also conducive to the hand to turn it, making it convenient to use.

[0080] For the specific structure of the extension rod 2, please refer to one embodiment of this application. Figure 1 and Figure 6The extension rod 2 can preferably be a telescopic rod. The extension rod 2 includes a plurality of rod tubes 22 that are connected in sequence, and a handle is preferably provided at the end of the plurality of rod tubes 22 for easy hand gripping and use.

[0081] In this way, the extension rod 2 has the ability to extend or retract, which can both adjust the extension length of the extension rod 2 and retract the extension rod 2 to save space, effectively improving the telescopic performance of the extension rod 2.

[0082] For the specific structure of the triggering mechanism 100 on the impact signal triggering device body 1 in this application embodiment, please refer to one embodiment of this application. Figure 7 and Figure 8 The triggering mechanism 100 includes a trigger head 9 disposed at the front end of the housing 11. Here, "front end" can be understood as one end of the housing 11 in the output direction of the impact signal triggering device; in addition, the other end of the housing 11 opposite to it is the rear end.

[0083] The impact head 3 can protrude from the trigger head 9 to the outside of the front end of the housing 11. In this embodiment, the trigger head 9 can preferably be a conical movable sleeve disposed at the front end of the housing 11, that is, a structure similar to the tip of a ballpoint pen. The impact head 3 is located in the conical sleeve-shaped trigger head 9 and can move within the trigger head 9, that is, a structure similar to the pen tip of a ballpoint pen protruding from the pen tip.

[0084] A latch 71 is provided on the drive shaft 7, and a connecting rod 91 is connected to the trigger head 9. A latch 92 is provided on the connecting rod 91, which is used to engage with the latch 71 on the drive shaft 7. The trigger head 9 is used to retract upon contact with the object being detected, thereby causing the connecting rod 91 to move, thus triggering the latch 92 to separate from the latch 71 and release the impact head 3. It can be seen that the trigger head 9 is movable. When the trigger head 9 contacts the object being detected, it can rebound and retract, thereby driving the connecting rod 91 to move towards the rear end of the housing 11, so that the latch 92 on the connecting rod 91 separates from the latch 71 on the drive shaft 7.

[0085] In actual operation, the drive shaft 7 can be operated first, pulling it towards the rear end of the housing 11 until the latch block 71 and the latch hook 92 engage. The latch hook 92 can be mounted on the connecting rod 91 via a torsion spring, allowing it to naturally approach the drive shaft 7 for easy engagement with the latch block 71. At this time, the impact head 3 retracts into the housing 11, and simultaneously the elastic element 5 contracts to store force. When the maintenance personnel move the impact signal triggering device to the object being tested, the trigger head 9 is pushed against it, causing it to rebound and retract into the housing 11. Simultaneously, this moves the connecting rod 91 towards the rear end of the housing 11, causing the latch hook 92 on the connecting rod 91 to separate from the latch block 71, releasing the elastic element 5 to drive the impact head 3 out from the front end of the housing 11, simulating an impact test on the object being tested.

[0086] Therefore, compared with the traditional trigger switch structure, the trigger mechanism 100 of this application embodiment is simpler in structure, saves space, and is convenient and easy to use. Since the trigger switch requires direct manual operation to trigger the impact head 3 output, the triggering structure of the trigger switch can only be applied to the detection position that maintenance personnel can directly reach. However, in the application scenario of this application embodiment, there are detection positions that maintenance personnel cannot directly reach. In this case, it can be used in conjunction with the extension rod 2. By using the extension rod 2 to extend the body 1 of the impact signal triggering device to the detection position, the trigger head 9 can be used to hit the object being detected to trigger the action, effectively improving the adaptability to the working environment.

[0087] Further improvements to the triggering mechanism 100 described above can be found in one embodiment of this application; please refer to the accompanying document. Figure 1 and Figure 8 The hook 92 is movably connected to the connecting rod 91, such as by a torsion spring. The main body 1 also includes a transmission component 13, which is connected to the hook 92 and extends to the extension end of the extension rod 2.

[0088] In this embodiment, the transmission component 13 can preferably be a steel wire rope, with one end extending into the interior of the housing 11 and fixedly connected to the hook 92 on the connecting rod 91. The other end of the steel wire rope passes through the exterior of the housing 11 and extends along the extension rod 2 to its extension end. The extension end of the extension rod 2 can be understood as a part that can be operated by hand. Since the hook 92 is movably connected, for example, via a torsion spring on the connecting rod 91, the transmission component 13 can directly trigger the hook 92 to release the engagement with the latch block 71 on the drive shaft 7.

[0089] Therefore, after the extension rod 2 is added to the impact signal triggering device body 1 in this embodiment of the application, the impact head 3 can be directly triggered by the transmission component 13, such as a steel wire rope, which effectively improves the accuracy of the triggering operation.

[0090] To further prevent damage to the surface of different objects being tested, such as pipes or equipment made of different materials, please refer to another embodiment of this application. Figure 7 The impact signal triggering device body 1 of this application embodiment also includes a mounting base 31 for mounting the impact head 3. The mounting base 31 is connected to the drive shaft 7, and the detection end of the force sensor 4 is in contact with the mounting base 31, so that the impact head 3 can be detachably mounted on the mounting base 31.

[0091] In this way, impact heads 3 made of materials with different hardness can be replaced on the mounting base 31 to adapt to different objects being tested and to achieve different striking force adjustments, effectively improving the protection effect on the equipment being tested.

[0092] The electrical connection methods between force sensor 4 and the host device include, but are not limited to, the following:

[0093] In one embodiment of this application, please refer to the following: Figure 2 and Figure 7 In the impact signal triggering device body 1 of this application embodiment, the signal connector 41 can preferably be a cable. The force sensor 4 is wired to a host device such as a display terminal through the cable, so that the detection data of the force sensor 4 is transmitted to the host device through the cable.

[0094] In one embodiment of this application (not shown in the figure), the signal connector 41 on the impact signal triggering device body 1 of this application embodiment can preferably be a wireless communication module. The wireless communication module, such as Bluetooth, wireless network WIFI, etc., can be used to wirelessly connect with the host device, such as a display terminal, so as to send the detection data of the force sensor 4 to the host device through the wireless communication module.

[0095] Please see Figure 9 This application embodiment also provides a monitoring system, including a display terminal and the aforementioned impact signal triggering device. The display terminal is electrically connected to the force sensor 4 in the impact signal triggering device through the aforementioned signal connector 41.

[0096] The display terminal can preferably be a portable display device specifically designed for the working environment, or a tablet computer or smartphone that can access the system's communication network and has the corresponding application software installed. The display terminal includes at least a storage module and a display screen. The storage module records the detection data received from the force sensor 4 and displays it on the display screen. This visualizes the detection data, which is beneficial for providing quantitative basic data for performance testing of the KIR system probes during the commissioning and operation phases of nuclear power plants.

[0097] To accurately measure the force of each impact, a force sensor 4 is installed in the impact signal triggering device body 1 of this application embodiment. This force sensor 4 can monitor the instantaneous deformation Δx(t) under impact in real time. The detection data from the force sensor 4 is transmitted to the display terminal via a signal connector 41, such as the cable or wireless communication module described above. The display terminal can preferably be a handheld, portable single-channel analog signal acquisition device. The display terminal can be equipped with a visual operating system, making it convenient for maintenance personnel to operate and easy to carry.

[0098] As an example, the monitoring system of this application embodiment can preferably be based on a dynamic equation, such as F(t)=k·Δx(t)+c·dΔx(t) / dt, to establish a time-domain model of the impact force (c is the damping coefficient); and, through a second-order differential equation, such as m·d 2 Δx(t) / dt2+c·dΔx(t) / dt+k·Δx(t)=F_ext(t), thus inverting the amplitude and energy spectrum characteristics of the impact force F_ext; then, by real-time acquisition, the real-time data triggered by the impact can be observed, and by opening the historical data recorded on the storage module, the operation and maintenance personnel can view the maximum and minimum values ​​of the tested equipment at the moment of impact.

[0099] Therefore, the monitoring system of this application embodiment is electrically connected to the force sensor 4 in the impact signal triggering device via a display terminal, collects detection data, and visualizes it through the display terminal. This facilitates the quantification of detection data, thereby standardizing the testing process, improving the accuracy of debugging tests, and providing basic data support for the design of test standards and acceptance criteria.

[0100] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An impact signal triggering device, characterized in that, include: The body includes a housing and an impact head, a force sensor, an elastic element, a guide ring, and a drive shaft disposed within the housing. The drive shaft passes through the guide ring and is connected to the impact head. The elastic element is sleeved on the drive shaft and disposed between the guide ring and the impact head. The force sensor is connected to the impact head and is electrically connected to a host device via a signal connector. The main body is also provided with a triggering mechanism, which is used to control the drive shaft to release the compressive force of the elastic element and eject the impact head; The extension rod is provided with a connecting ear on the main body, and the extension rod and the connecting ear are detachably connected.

2. The impact signal triggering device according to claim 1, characterized in that: The connecting lug is provided with a mounting groove and mounting holes located on both sides of the mounting groove. The connecting end of the extension rod is provided with a connector for embedding into the mounting groove, and the connector is provided with a threaded hole. The impact signal triggering device also includes a rotary locking component, and the rotary locking component is provided with a threaded shaft for passing through the mounting hole and the threaded hole.

3. The impact signal triggering device according to claim 2, characterized in that: The connector is an arc-shaped head, and the extension rod can be adjusted to adjust the angle between itself and the body by rotating the connector in the mounting groove.

4. The impact signal triggering device according to claim 2, characterized in that: The rotary lock has a pair of operating arms for manual operation, and the pair of operating arms are symmetrically arranged on the rotary lock with the threaded shaft as the central axis.

5. The impact signal triggering device according to claim 2, characterized in that: The rotary locking component is a knob, and the outer periphery of the rotary locking component has anti-slip texture.

6. The impact signal triggering device according to claim 1, characterized in that: The extension rod is a telescopic rod, and the extension rod includes multiple rod cylinders that are sequentially sleeved on it.

7. The impact signal triggering device according to claim 1, characterized in that: The triggering mechanism includes a trigger head disposed at the front end of the housing, and the impact head can extend through the trigger head to the outside of the housing; a latch is provided on the drive shaft, and a connecting rod is connected to the trigger head, and a hook is provided on the connecting rod for engaging with the latch; the trigger head is used to retract upon contact with the object being detected and drive the connecting rod to move, thereby triggering the hook to separate from the latch to release the impact head.

8. The impact signal triggering device according to claim 7, characterized in that: The hook is movably connected to the connecting rod, and the body also includes a transmission component, which is connected to the hook and extends to the extension end of the extension rod.

9. The impact signal triggering device according to claim 1, characterized in that: The body also includes a mounting base for mounting the impact head. The mounting base is connected to the drive shaft, the detection end of the force sensor is in contact with the mounting base, and the impact head is detachably mounted on the mounting base.

10. The impact signal triggering device according to any one of claims 1 to 9, characterized in that: The signal connector is a cable.

11. The impact signal triggering device according to any one of claims 1 to 9, characterized in that: The signal connector is a wireless communication module.

12. A monitoring system, characterized in that: The device includes a display terminal and an impact signal triggering device as described in any one of claims 1 to 11, wherein the display terminal is electrically connected to the force sensor in the impact signal triggering device via the signal connector; the display terminal includes a storage module and a display screen, wherein the storage module is used to record the detection data received from the force sensor and display it on the display screen.

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