An integrated leakage current on-line monitoring device

Abstract

This utility model relates to the field of current monitoring and discloses an online monitoring device integrating leakage current. It includes a detection device with a base fixedly connected to its bottom and a display screen fixedly connected to its side wall. A dustproof component is provided on the side wall of the detection device. The dustproof component includes a fixing block, whose side wall is fixedly connected to the side wall of the detection device. A fixing column is fixedly connected to the side wall of the fixing block, and a first spring is sleeved on the outer wall of the fixing column. One end of the first spring is fixedly connected to the outer wall of the fixing column, and the other end is fixedly connected to a connecting block. This utility model achieves dustproofing of the interface by moving the connecting block when the dustproof plate is moved. This movement causes the first spring to contract on the outer wall of the fixing column, effectively solving the problem of increased contact resistance and unstable signal or power supply caused by long-term exposure to dust accumulation at the interface, thus improving the stability of the online current monitoring device.

Description

Technical Field

[0001] This utility model relates to the field of current monitoring, and in particular to an online monitoring device that integrates leakage current. Background Technology

[0002] In the safe operation of power systems, industrial electrical equipment, and new energy devices, real-time monitoring of leakage current is a crucial link in ensuring stable equipment operation and preventing electrical faults and safety accidents. With the rapid development of power electronics technology, the integration level of various electrical devices is constantly increasing, and the operating environment is becoming increasingly complex, placing higher demands on the accuracy, timeliness, and continuity of leakage current monitoring. An integrated online leakage current monitoring device has emerged to address this need. It can collect leakage current data in real time during equipment operation and, through a data transmission and analysis system, achieve dynamic assessment of the equipment's insulation status, providing important data for equipment maintenance and fault early warning.

[0003] In existing technologies, online leakage current monitoring equipment typically adopts a split-type structure design, mainly composed of a current sensor, a signal conditioning module, a data acquisition unit, and a communication module. Its technical principle is to use the current sensor to sense the leakage current signal of the device under test, convert the weak current signal into a voltage signal, then process it through filtering and amplification by the signal conditioning module, followed by the data acquisition unit converting the analog signal into a digital signal, and finally transmitting the monitoring data to the back-end monitoring system via the communication module. In terms of mechanical installation, the sensor is mostly installed on the circuitry of the device under test using a snap-on or bolt-fixed method. The functional modules are connected by wires and integrated into a metal or plastic housing, which has interfaces for data transmission and power input.

[0004] However, existing online leakage current monitoring devices have significant shortcomings in interface protection. The device interfaces are constantly exposed to the external environment, especially in dusty locations such as industrial workshops and outdoor substations, where dust easily adheres to the metal contact surfaces. As dust accumulates, it increases circuit contact resistance, and in severe cases, can even cause signal transmission interruptions or unstable power supply, significantly impacting the normal operation of the monitoring equipment and the reliability of the monitoring data. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an integrated online leakage current monitoring device, which aims to improve the problem that when the interface is exposed to a dusty environment for a long time, dust will adhere to the surface of the metal contacts, resulting in increased circuit contact resistance, signal transmission interruption, or unstable power supply.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an online monitoring device for integrated leakage current, comprising a detection device, characterized in that: a base is fixedly connected to the bottom of the detection device, a display screen is fixedly connected to the side wall of the detection device, and a dustproof component is provided on the side wall of the detection device;

[0007] The dustproof component includes a fixing block, the side wall of which is fixedly connected to the side wall of the detection device, a fixing column fixedly connected to the side wall of the fixing block, a first spring sleeved on the outer wall of the fixing column, one end of the first spring fixedly connected to the outer wall of the fixing column, and a connecting block fixedly connected to the other end of the first spring, and a dustproof plate fixedly connected to the side wall of the connecting block.

[0008] As a further description of the above technical solution:

[0009] The detection device has an interface inside, and the dustproof plate sidewall is rotatably connected to the interface sidewall.

[0010] As a further description of the above technical solution:

[0011] A hollow block is fixedly connected inside the detection device, and one side of the hollow block is set on the interface sidewall.

[0012] As a further description of the above technical solution:

[0013] A slider is slidably connected inside the hollow block, and the sidewall of the slider is slidably connected inside the hollow block.

[0014] As a further description of the above technical solution:

[0015] The slider sidewall is fixedly connected to a locking block, and the locking block sidewall is slidably connected inside the hollow block.

[0016] As a further description of the above technical solution:

[0017] The hollow block has a slide rail inside, and the side wall of the slider is slidably connected to the inside of the slide rail.

[0018] As a further description of the above technical solution:

[0019] A second spring is provided inside the hollow block. One end of the second spring is fixedly connected to the inner wall of the hollow block, and the other end of the second spring is fixedly connected to the side wall of the block.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the dustproof plate is moved to drive the connecting block to move. When the connecting block moves, the first spring will contract on the outer wall of the fixed column, which achieves the effect of dustproofing the interface. This solves the problem that when the interface is exposed to a dusty environment for a long time, dust will adhere to the surface of the metal contact, resulting in increased circuit contact resistance, interruption of signal transmission or unstable power supply. This improves the stability of the online monitoring equipment for leakage current.

[0022] 2. In this utility model, when the sensor is inserted into the interface, the locking block on the outer wall is squeezed. When the locking block is squeezed, the slider on the side wall is driven to slide on the inner wall of the slide rail. At the same time, during the process of the locking block being subjected to force, the second spring on the side wall is driven to retract, thereby achieving the effect of locking the sensor. This solves the problem that the relative position of the sensor and the measured cable and busbar may shift due to vibration, external force contact, or improper installation, and improves the practicality of the leakage current online monitoring equipment. Attached Figure Description

[0023] Figure 1 This is a perspective view of an integrated online leakage current monitoring device proposed in this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle

[0025] Figure 3 This is a schematic diagram of the bottom structure of the detection device of the integrated online leakage current monitoring equipment proposed in this utility model;

[0026] Figure 4 This is a cross-sectional schematic diagram of the detection device for an integrated online leakage current monitoring equipment proposed in this utility model;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Detection device; 2. Base; 3. Display screen; 4. Fixing block; 5. Fixing column; 6. First spring; 7. Connecting block; 8. Dustproof plate; 9. Interface; 10. Hollow block; 11. Locking block; 12. Sliding block; 13. Second spring; 14. Slide rail. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 An embodiment of this utility model is provided: an online monitoring device for integrated leakage current, including a detection device 1, a base 2 fixedly connected to the bottom of the detection device 1, a display screen 3 fixedly connected to the side wall of the detection device 1, and a dustproof component provided on the side wall of the detection device 1.

[0032] The dustproof assembly includes a fixing block 4, whose side wall is fixedly connected to the side wall of the detection device 1. A fixing column 5 is fixedly connected to the side wall of the fixing block 4. The fixing column 5 provides a mounting carrier and guide support for the first spring 6, thereby ensuring that the elastic force of the first spring 6 can be transmitted to the connecting block 7 along the fixed direction, ensuring the stable movement trajectory of the dustproof plate 8, and avoiding the phenomenon of the dustproof plate 8 shifting and causing sealing failure. The first spring 6 is sleeved on the outer wall of the fixing column 5. The first spring 6 provides the reset elastic force for the dustproof plate 8, thereby pushing the dustproof plate 8 to tightly fit the interface 9 when the equipment is not in use, realizing the sealing protection of the interface 9. One end of the first spring 6 is fixedly connected to the outer wall of the fixing column 5, and the other end of the first spring 6 is fixedly connected to the connecting block 7. The side wall of the connecting block 7 is fixedly connected to the dustproof plate 8. The dustproof plate 8 is used to cover the surface of the interface 9, thereby preventing dust, water vapor and other impurities from entering the interior of the interface 9, avoiding the problem of poor contact or short circuit caused by the accumulation of impurities, and extending the service life of the equipment.

[0033] Reference Figure 4 and Figure 5The detection device 1 has an interface 9 inside. The side wall of the dustproof plate 8 is rotatably connected to the side wall of the interface 9. A hollow block 10 is fixedly connected inside the detection device 1. One side of the hollow block 10 is set on the side wall of the interface 9. A slider 12 is slidably connected inside the hollow block 10. The slider 12 moves in conjunction with the slide rail 14 to guide the locking block 11 to extend and retract along a fixed path, avoiding the phenomenon that the locking block 11 will deviate and cause locking failure or sensor insertion and removal obstruction, thus ensuring the smoothness of the locking and unlocking process. The side wall of the slider 12 is slidably connected to the inside of the hollow block 10. The locking block 11 is fixedly connected to the side wall of the slider 12. The side wall of the locking block 11 is slidably connected to the inside of the hollow block 10. The locking block 11 is used to lock into the preset slot on the outer wall of the sensor. This creates a mechanical lock, effectively preventing the sensor from shifting due to vibration, external force, or improper installation, ensuring the reliability of the sensor connection. The side wall of the locking block 11 is slidably connected to the inside of the hollow block 10. A slide rail 14 is provided inside the hollow block 10, and the side wall of the slider 12 is slidably connected to the inside of the slide rail 14. A second spring 13 is provided inside the hollow block 10. The second spring 13 provides a reset force for the locking block 11, so that after the sensor is fully inserted, the locking block 11 is pushed out and locked into the slot, achieving automatic locking. When the sensor is pulled out, the energy is stored through compression to ensure convenient unlocking operation, balancing connection stability and ease of installation and removal. One end of the second spring 13 is fixedly connected to the inner wall of the hollow block 10, and the other end of the second spring 13 is fixedly connected to the side wall of the locking block 11.

[0034] Working principle: When the online leakage current monitoring device is not in use, the dustproof plate 8 tightly adheres to the surface of the interface 9 under the elastic force of the first spring 6. The interface 9 is sealed and protected through the linkage structure of the fixing post 5 and the connecting block 7. At this time, the first spring 6 is in a naturally extended state, and its elastic force is transmitted to the dustproof plate 8 through the connecting block 7, ensuring that the dustproof plate 8 effectively shields the interface 9, preventing dust, moisture, and other impurities from entering the interface 9. When a sensor or data cable needs to be connected, external force moves the dustproof plate 8, causing the connecting block 7 to move along the axis of the fixing post 5, compressing the first spring 6 and generating a reverse elastic force. After the insertion / removal operation is completed, the external force is removed, and the reset elastic force of the first spring 6 pushes the connecting block 7 and the dustproof plate 8 back to their original positions, resealing the interface 9, thus achieving a dynamic dustproof effect.

[0035] During the sensor insertion into interface 9, its outer wall presses against the locking block 11 and pushes the slider 12 inward along the slide rail 14. At this time, the second spring 13 inside the hollow block 10 is compressed and stores energy. When the sensor is fully inserted into interface 9, the locking block 11 pops out under the return force of the second spring 13 and locks into the preset slot on the outer wall of the sensor, forming a mechanical lock. This effectively prevents the sensor from shifting due to vibration, external force, or improper installation. When it is necessary to remove the sensor, applying an outward pulling force will force the locking block 11 to compress the second spring 13 again and return to the hollow block 10, releasing the lock and ensuring convenient and stable sensor insertion and removal operations. This structure, through the cooperation of the second spring 13 and the slider 12, ensures the reliability of the sensor connection and simplifies the installation and removal process.

Claims

1. An online monitoring device integrating leakage current, comprising a detection device (1), characterized in that: The detection device (1) is fixedly connected to a base (2) at its bottom, and a display screen (3) is fixedly connected to the side wall of the detection device (1). The side wall of the detection device (1) is provided with a dustproof component. The dustproof component includes a fixing block (4), the side wall of the fixing block (4) is fixedly connected to the side wall of the detection device (1), the side wall of the fixing block (4) is fixedly connected to a fixing column (5), the outer wall of the fixing column (5) is fitted with a first spring (6), one end of the first spring (6) is fixedly connected to the outer wall of the fixing column (5), the other end of the first spring (6) is fixedly connected to a connecting block (7), and the side wall of the connecting block (7) is fixedly connected to a dustproof plate (8).

2. The online monitoring device for integrated leakage current according to claim 1, characterized in that: The detection device (1) has an interface (9) inside, and the side wall of the dustproof plate (8) is rotatably connected to the side wall of the interface (9).

3. The online monitoring device for integrated leakage current according to claim 1, characterized in that: The detection device (1) has a hollow block (10) fixedly connected inside, and one side of the hollow block (10) is set on the side wall of the interface (9).

4. The online monitoring device for integrated leakage current according to claim 3, characterized in that: The hollow block (10) is slidably connected to a slider (12), and the sidewall of the slider (12) is slidably connected to the inside of the hollow block (10).

5. The online monitoring device for integrated leakage current according to claim 4, characterized in that: The slider (12) has a fixed connection to a locking block (11) on its side wall, and the locking block (11) is slidably connected to the inside of the hollow block (10).

6. The online monitoring device for integrated leakage current according to claim 5, characterized in that: The hollow block (10) has a slide rail (14) inside, and the side wall of the slider (12) is slidably connected to the slide rail (14).

7. The online monitoring device for integrated leakage current according to claim 6, characterized in that: The hollow block (10) is provided with a second spring (13), one end of which is fixedly connected to the inner wall of the hollow block (10), and the other end of which is fixedly connected to the side wall of the card block (11).

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