Device for the characterization of the 0 axis of a seismic accelerometer mounting base

Abstract

The utility model provides a device for the portrayal of the installation base 0 axis of earthquake acceleration sensor, including base, protractor disc subassembly, portrayal mechanism and electronic compass, base detachable fixed on the installation base of earthquake acceleration sensor, protractor disc subassembly includes the fixed protractor disc and movable protractor disc of coaxial arrangement, the fixed protractor disc is fixed on the base, and the base or fixed protractor disc sets up the limiting part of the limiting movable protractor disc rotation, portrayal mechanism sets up on movable protractor disc, including the drive part for driving the portrayal action of the marking tool and marking tool, and the marking tool position changes position with movable protractor disc rotation, electronic compass installs on the base, and is connected with movable protractor disc. Compared with prior art, the operation process of the portrayal device is simple, and it is not necessary to measure and calibrate many times, which greatly improves the efficiency of determining the 0 axis of the installation base of the earthquake acceleration sensor, and through the use of the protractor disc and the electronic compass, the accuracy of the included angle is ensured.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant equipment installation technology, and in particular to a marking device for the zero axis of a seismic acceleration sensor mounting base. Background Technology

[0002] In the safety monitoring system of a nuclear power plant, seismic acceleration sensors are one of the most important pieces of equipment, and their accurate installation is a key prerequisite for ensuring the effectiveness of structural safety monitoring. The zero-axis orientation of the mounting base of the seismic acceleration sensor must maintain a specific angle with the geographic North Pole, and the error of this angle must typically be within ±0.5° to ensure the phase accuracy and spectral analysis reliability of the seismic monitoring data.

[0003] However, the current process of marking the zero axis of the seismic acceleration sensor mounting base mainly relies on traditional manual measurement and marking. This method has significant drawbacks: First, manual measurement is easily affected by environmental factors (such as light and operator fatigue), resulting in large measurement errors and making it difficult to guarantee the accuracy of the zero axis orientation and the angle between the geographic North Pole and the geographic North Pole. Second, the manual operation process is cumbersome, requiring multiple measurements and calibrations, which consumes a lot of time and manpower, seriously affecting installation efficiency and failing to meet the high precision and high reliability requirements of nuclear power plants for equipment installation. Utility Model Content

[0004] This utility model provides a marking device for the zero axis of a seismic acceleration sensor mounting base, which solves the technical problems of low accuracy and cumbersome operation in traditional manual measurement and marking of the angle between the zero axis of the seismic acceleration sensor mounting base and the geographic North Pole.

[0005] The marking device for the zero axis of a seismic acceleration sensor mounting base provided by this utility model includes: The base is detachably fixed to the mounting base of the seismic acceleration sensor; The indexing plate assembly includes a fixed indexing plate and a movable indexing plate arranged coaxially. The fixed indexing plate is fixed on the base, and the movable indexing plate can rotate around the central axis of the fixed indexing plate. The base or the fixed indexing plate is provided with a limiting component to restrict the rotation of the movable indexing plate. The engraving mechanism is mounted on the movable indexing plate and includes an engraving knife and a drive unit for driving the engraving knife to perform engraving actions. The position of the engraving knife changes as the movable indexing plate rotates. An electronic compass, mounted on the base and connected to the movable scale, is used to detect the azimuth angle of the movable scale relative to the geographic North Pole in real time.

[0006] In one embodiment of this utility model, the movable scale has an angle sensor, which is electrically connected to the electronic compass. The electronic compass uses the angle sensor to detect the azimuth angle of the movable scale relative to the geographic North Pole in real time.

[0007] In one embodiment of the present invention, a control unit is further included. The control unit is electrically connected to the electronic compass and is capable of displaying the azimuth data in real time.

[0008] In one embodiment of the present invention, an angle adjustment mechanism connected to the movable indexing plate is further included, the angle adjustment mechanism being used to adjust the angle of the movable indexing plate.

[0009] In one embodiment of the present invention, the angle adjustment mechanism includes a transmission component and a fine-tuning button. The fine-tuning button adjusts the angle of the movable indexing plate through the transmission component. The transmission component adopts gear transmission, worm gear transmission, or helical rotation.

[0010] In one embodiment of the present invention, the surface of the fixed scale is marked with angle graduations, and the accuracy of the angle graduations is less than 0.1°.

[0011] In one embodiment of the present invention, a fixing mechanism is further included. The fixing mechanism is used to fix the base to the mounting base of the seismic acceleration sensor. The fixing mechanism includes a gripper and a gripper control component. The gripper control component is used to adjust the gripper to clamp or loosen the mounting base of the seismic acceleration sensor.

[0012] In one embodiment of the present invention, a fixing mechanism is further included. The fixing mechanism is used to fix the base to the mounting base of the seismic acceleration sensor. The fixing mechanism is an electromagnet. When the electromagnet is energized, it is attracted and fixed to the mounting base of the seismic acceleration sensor. When the electromagnet is de-energized, it releases the fixed connection with the mounting base of the seismic acceleration sensor.

[0013] In one embodiment of the present invention, the engraving mechanism further includes a lifting part, which can push the engraving knife to a vertical position.

[0014] In one embodiment of the present invention, the engraving mechanism further includes a pressure regulating component, which is used to adjust the pressure of the engraving knife when it performs the engraving action.

[0015] The beneficial effects of this utility model are as follows: The marking device for the zero-axis of a seismic accelerometer mounting base proposed in this utility model is fixed to the mounting base of the seismic accelerometer using a base before use. When the base is fixed, the zero mark of the fixed scale can be aligned with the geographic North Pole. During use, the movable scale can be rotated around the central axis of the fixed scale. The azimuth angle of the movable scale relative to the geographic North Pole is detected in real time by an electronic compass. This azimuth angle is the specific angle between the zero-axis azimuth of the mounting base in the seismic accelerometer and the geographic North Pole. When the movable scale rotates to the required angle, a limiting component restricts its position. At this point, the marking mechanism is activated, and the drive unit drives the marking blade to mark the zero-axis. This solution uses the real-time azimuth detection of the electronic compass and the accuracy of the scale on the scale to ensure the accuracy of the angle between the zero-axis and the geographic North Pole, meeting the high-precision requirements of nuclear power plants for seismic accelerometer installation and effectively ensuring the accuracy of seismic monitoring data. Meanwhile, this characterization device integrates orientation detection, angle adjustment, and characterization functions. Its operation is simple, eliminating the need for complex manual measurement and calibration processes, significantly reducing the zero-axis characterization time, improving the installation efficiency of the seismic accelerometer sensor, and lowering labor costs. Compared with existing technologies, the characterization device has a simpler operation process, requiring no multiple measurements or calibrations, greatly improving the efficiency of determining the zero-axis of the seismic accelerometer sensor mounting base. Furthermore, the use of a graduated dial and electronic compass ensures the accuracy of the included angle. 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 structure of a marking device for the zero axis of a seismic acceleration sensor mounting base, as an example of this utility model. Figure 2 Shown is a front view of a marking device for the zero axis of a seismic acceleration sensor mounting base, as an example of this utility model; Figure 3 Shown is a top view of a marking device for the zero axis of a seismic acceleration sensor mounting base, as an example of this utility model.

[0018] The attached figures are labeled as follows: Base 10, gripper 11, fixed indexing plate 20, movable indexing plate 21, limiting component 22, angle adjustment mechanism 23, engraving knife 30, drive unit 31, electronic compass 40. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model 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 this utility model. 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 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 present invention. However, it will be apparent to those skilled in the art that embodiments of the present 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 present invention.

[0022] The specific structure of the marking device for the zero axis of the seismic acceleration sensor mounting base in this utility model is described in conjunction with [reference needed]. Figures 1 to 3 The marking device for the zero axis of the seismic acceleration sensor mounting base includes: The base 10 is detachably fixed to the mounting base of the seismic acceleration sensor; The indexing plate assembly includes a fixed indexing plate 20 and a movable indexing plate 21 arranged coaxially. The fixed indexing plate 20 is fixed on the base 10, and the movable indexing plate 21 can rotate around the central axis of the fixed indexing plate 20. The base 10 or the fixed indexing plate 20 is provided with a limiting component 22 to restrict the rotation of the movable indexing plate 21. The engraving mechanism is mounted on the movable indexing plate 21 and includes an engraving knife 30 and a drive unit 31 for driving the engraving knife 30 to perform engraving actions. The position of the engraving knife 30 changes as the movable indexing plate 21 rotates. An electronic compass 40 is mounted on the base 10 and connected to the movable scale 21, used to detect the azimuth angle of the movable scale 21 relative to the geographic North Pole in real time.

[0023] The base 10 is quickly and stably secured to the mounting base of the seismic accelerometer using magnets or clips. The 0-degree mark of the fixed scale 20 points to the geographic North Pole. After the movable scale 21 rotates, the angle of rotation can be read from the fixed scale 20 to determine the angle between the 0-axis azimuth and the geographic North Pole. The bottom of the base 10 is equipped with an anti-slip pad to increase friction with the surface of the mounting base of the seismic accelerometer, preventing displacement of the device during the marking process.

[0024] In practical implementation, the marking device is fixed to the mounting base of the seismic accelerometer via the base 10. When the base 10 is fixed, the 0-degree mark of the fixed scale 20 can be aligned with the geographic North Pole. During use, the movable scale 21 can be rotated around the central axis of the fixed scale 20. The azimuth angle of the movable scale 21 relative to the geographic North Pole is detected in real time by the electronic compass 40. This azimuth angle is the specific angle between the 0-axis azimuth of the mounting base in the seismic accelerometer and the geographic North Pole. When the movable scale 21 rotates to the required angle, the position of the movable scale 21 is limited by the limiting component 22 to ensure the stability of the angle. At this time, the marking mechanism is activated, and the driving unit 31 drives the marking blade 30 to perform the marking action, marking the 0-axis. This solution uses the electronic compass 40 to detect the azimuth in real time and the accuracy of the scale on the scale to ensure the accuracy of the angle between the 0-axis and the geographic North Pole, meeting the high-precision requirements of nuclear power plants for seismic accelerometer installation and effectively ensuring the accuracy of seismic monitoring data. Meanwhile, this characterization device integrates orientation detection, angle adjustment, and characterization functions. The operation process is simple, eliminating the need for complex manual measurement and calibration processes, which significantly shortens the characterization time of the 0-axis, improves the installation efficiency of the seismic acceleration sensor, and reduces labor costs.

[0025] In some embodiments, the movable scale plate 21 is equipped with an angle sensor, which is electrically connected to the electronic compass 40. The electronic compass 40 uses the angle sensor to detect the azimuth angle of the movable scale plate 21 relative to the geographic North Pole in real time. The angle sensor records the angle of the movable scale plate 21 in real time and transmits it to the electronic compass 40, allowing the electronic compass 40 to know the azimuth angle of the movable scale plate 21 relative to the geographic North Pole in real time. The movable scale plate 21 and the electronic compass 40 are linked, and the azimuth angle change detected by the electronic compass 40 is synchronously reflected in the angle indication of the movable scale plate 21, facilitating the operator to quickly adjust the movable scale plate 21 to the corresponding angle on the fixed scale plate 20 according to the set angle between the zero axis and the geographic North Pole.

[0026] In some embodiments, a control unit is also included, which is electrically connected to the electronic compass 40 and can display the azimuth data in real time. The control unit can be a combination of a circuit board and a display screen to receive and process the data from the electronic compass 40. Specifically, it converts the detected azimuth information into electrical signals and transmits them to the control unit or displays them directly on the display screen so that the operator can intuitively understand the current azimuth status.

[0027] In some embodiments, an angle adjustment mechanism 23 connected to the movable indexing plate 21 is further included, the angle adjustment mechanism 23 being used to adjust the angle of the movable indexing plate 21. For example, Figures 1 to 3 As shown, the angle adjustment mechanism 23 can make minute angle adjustments to the movable indexing plate 21 in order to make the positioning angle more accurate.

[0028] In some embodiments, the angle adjustment mechanism 23 includes a transmission component and a fine-tuning button. The fine-tuning button adjusts the angle of the movable indexing plate 21 via the transmission component, which employs gear transmission, worm gear transmission, or helical rotation. The transmission component enables transmission between the fine-tuning button and the movable indexing plate 21, amplifying the rotation angle of the movable indexing plate 21. This allows for small-angle adjustments via the fine-tuning button, increasing the adjustment precision of the movable indexing plate 21. For example, if the movable indexing plate 21 rotates 1°, and the transmission component amplifies the rotation angle to 360°, then a full rotation of the fine-tuning button will rotate the movable indexing plate 21 by 1°. The rotation angle of the movable indexing plate 21 can be adjusted more precisely by adjusting the rotation angle of the fine-tuning button. Furthermore, under the action of the angle adjustment mechanism 23, the position of the movable indexing plate 21 remains stable after rotation, thus avoiding precision errors caused by the wobbling of the movable indexing plate 21.

[0029] In some embodiments, the surface of the fixed scale 20 is marked with angle graduations, the accuracy of which is less than 0.1°. This enables the included angle to be accurate to 0.1° or higher, satisfying the precision of the angle between the zero axis and the geographic North Pole.

[0030] In some embodiments, a fixing mechanism is further included for fixing the base 10 to the mounting base of the seismic acceleration sensor. The fixing mechanism includes a gripper 11 and a gripper 11 control member, the gripper 11 control member being used to adjust the gripper 11 to clamp or loosen the mounting base of the seismic acceleration sensor. For example, Figures 1 to 3As shown, the base 10 is detachably fixed to the mounting base of the seismic acceleration sensor by a fixing mechanism. Specifically, when it is necessary to fix this device, the gripper 11 is extended by the gripper 11 control component to clamp and fix it on the mounting base of the seismic acceleration sensor. When it is necessary to disassemble this device, the gripper 11 is retracted by the gripper 11 control component to release the grip on the mounting base of the seismic acceleration sensor.

[0031] In some embodiments, a fixing mechanism is further included. This fixing mechanism is used to fix the base 10 to the mounting base of the seismic acceleration sensor. The fixing mechanism is an electromagnet. When the electromagnet is energized, it attracts and fixes itself to the mounting base of the seismic acceleration sensor. When the electromagnet is de-energized, the connection between the electromagnet and the mounting base of the seismic acceleration sensor is released. Using an electromagnet as the fixing mechanism requires only energizing the electromagnet to fix the base 10 to the mounting base of the seismic acceleration sensor, and de-energizing the electromagnet to loosen the connection between the base 10 and the mounting base of the seismic acceleration sensor. Using an electromagnet to fix this device is simple and quick to operate, and provides a relatively secure fixation.

[0032] In some embodiments, the engraving mechanism further includes a lifting unit, which can push the engraving blade 30 to a vertical position. The lifting unit can control the raising and lowering of the engraving blade 30, lowering it to the surface of the mounting base of the seismic acceleration sensor when engraving is needed, and raising it after engraving is completed, thus avoiding unnecessary contact and wear between the engraving blade 30 and the surface of the mounting base of the seismic acceleration sensor.

[0033] In some embodiments, the engraving mechanism further includes a pressure regulating component for adjusting the pressure of the engraving blade 30 during engraving. The pressure regulating component can adjust the pressure of the engraving blade 30 during engraving according to the material of the mounting base of the seismic acceleration sensor, ensuring that the engraving marks are clear, the depth is appropriate, and that the mounting base is not excessively damaged.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A marking device for the zero axis of a seismic acceleration sensor mounting base, characterized in that: The base is detachably fixed to the mounting base of the seismic acceleration sensor; The indexing plate assembly includes a fixed indexing plate and a movable indexing plate arranged coaxially. The fixed indexing plate is fixed on the base, and the movable indexing plate can rotate around the central axis of the fixed indexing plate. The base or the fixed indexing plate is provided with a limiting component to restrict the rotation of the movable indexing plate. The engraving mechanism is mounted on the movable indexing plate and includes an engraving knife and a drive unit for driving the engraving knife to perform engraving actions. The position of the engraving knife changes as the movable indexing plate rotates. An electronic compass, mounted on the base and connected to the movable scale, is used to detect the azimuth angle of the movable scale relative to the geographic North Pole in real time.

2. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: The movable scale has an angle sensor, which is electrically connected to the electronic compass. The electronic compass uses the angle sensor to detect the azimuth angle of the movable scale relative to the geographic North Pole in real time.

3. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: It also includes a control unit, which is electrically connected to the electronic compass and can display the azimuth data in real time.

4. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: It also includes an angle adjustment mechanism connected to the movable indexing plate, the angle adjustment mechanism being used to adjust the angle of the movable indexing plate.

5. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 4, characterized in that: The angle adjustment mechanism includes a transmission component and a fine-tuning button. The fine-tuning button adjusts the angle of the movable indexing plate through the transmission component. The transmission component adopts gear transmission, worm gear transmission, or helical rotation.

6. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: The surface of the fixed scale is marked with angle graduations, and the accuracy of the angle graduations is less than 0.1°.

7. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: It also includes a fixing mechanism for fixing the base to the mounting base of the seismic acceleration sensor. The fixing mechanism includes a gripper and a gripper control component, which is used to adjust the gripper to clamp or loosen the mounting base of the seismic acceleration sensor.

8. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 1, characterized in that: It also includes a fixing mechanism, which is used to fix the base to the mounting base of the seismic acceleration sensor. The fixing mechanism is an electromagnet. When the electromagnet is energized, it is attracted and fixed to the mounting base of the seismic acceleration sensor. When the electromagnet is de-energized, it releases the fixed connection with the mounting base of the seismic acceleration sensor.

9. The marking device for the zero axis of a seismic acceleration sensor mounting base according to any one of claims 1-8, characterized in that: The engraving mechanism also includes a lifting unit, which can push the engraving knife to a vertical position.

10. The marking device for the zero axis of a seismic acceleration sensor mounting base according to claim 9, characterized in that: The engraving mechanism also includes a pressure regulating component, which is used to adjust the pressure of the engraving knife when it performs the engraving action.

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