Railway electric power grounding safety monitoring device

Abstract

The utility model discloses a railway electric power grounding safety monitoring device which comprises a monitoring box body, two fixing pieces are arranged at the lower end of the monitoring box body, two hinges are installed on one side of the front end of the monitoring box body, a box body door is installed at the other ends of the two hinges, and a grounding monitoring structure is installed at the lower end in the monitoring box body. An insulating mounting structure is mounted at the upper end in the monitoring box body; the utility model relates to the technical field of grounding monitoring, in use, through the arrangement of a plurality of connecting assemblies, stable grounding connection of equipment in a cabinet body can be realized, and by adopting a side connection mode, rapid dismounting and mounting of a grounding wire can be realized in subsequent grounding wire management, dismounting and mounting and other operations, thereby improving the working efficiency. Meanwhile, the grounding resistance monitoring unit is adopted to monitor the resistance value of the grounding system in real time in the working process so as to ensure the safety and stability of the grounding system, and the use condition of the grounding wire is monitored in real time so as to ensure the overall grounding stability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of grounding monitoring technology, specifically a railway power grounding safety monitoring device. Background Technology

[0002] The main purpose of railway power grounding safety monitoring is to ensure the normal operation of grounding devices in the railway power system and to protect the safety of equipment, personnel and the environment.

[0003] Since grounding wires are usually installed in equipment cabinets or underground, operators cannot monitor them directly in real time, which affects their management, disassembly, and control of the grounding wires, posing a significant safety hazard. Furthermore, the existing grounding wire monitoring and management methods are chaotic, and there are no records of grounding wire usage, making it impossible to monitor the storage, retrieval, and usage of grounding wires in real time.

[0004] In view of this, existing technologies may already exist to address the above problems, but based on existing equipment and / or processing technologies, this application aims to provide an alternative or replacement technical solution. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A railway power grounding safety monitoring device includes a monitoring box, with two fixing plates at the lower end of the monitoring box, two hinges installed on one side of the front end of the monitoring box, and a box door installed on the other end of the two hinges. A grounding monitoring structure is installed in the lower part of the monitoring box, and an insulation installation structure is installed in the upper part of the monitoring box.

[0007] The grounding monitoring structure includes: a partition, a first insulating layer, a mounting frame, a grounding resistance monitoring unit, two sliding grooves, a sliding plate, and several connecting components;

[0008] The partition is fixedly installed inside the monitoring box, the first insulation layer is fixedly installed on the lower wall of the monitoring box, the mounting bracket is installed on the upper end of the first insulation layer by bolts, the grounding resistance monitoring unit is installed on the upper end of the mounting bracket by bolts, the two sliding grooves are respectively installed on the two side walls of the monitoring box, the two ends of the sliding plate are respectively movably embedded in the two sliding grooves, and the connecting components are respectively embedded on the two sides of the monitoring box and the partition.

[0009] Preferably, one of the connecting components includes: an insulating sleeve, a connecting screw, two washers, and two nuts;

[0010] The insulating sleeve is movably fitted onto the partition or the monitoring box, the connecting screw is movably fitted into the insulating sleeve, the two gaskets are respectively movably fitted onto both ends of the connecting screw, and the two nuts are respectively movably fitted onto both sides of the connecting screw, and are both located outside the two gaskets.

[0011] Preferably, the insulating mounting structure includes: a second insulating layer, an insulating bracket, a mounting plate, and several fixing holes;

[0012] The second insulating layer is located on the inner wall of the monitoring box. The insulating bracket is fixedly installed on the upper end of the rear wall of the monitoring box. The mounting plate is installed on the front end of the insulating bracket. A plurality of fixing holes are evenly distributed on the mounting plate.

[0013] Preferably, the fixing piece is an L-shaped fixing piece, and a strip-shaped hole is provided on one side of the fixing piece.

[0014] Preferably, the upper end of the enclosure door has five strip-shaped heat dissipation holes.

[0015] Preferably, a lifting handle is installed on the upper end of the front wall of the sliding plate, and three ventilation holes are provided on the upper end of the sliding plate.

[0016] Beneficial effects

[0017] This utility model provides a railway power grounding safety monitoring device, which has the following beneficial effects:

[0018] The grounding monitoring structure adopted in this utility model can achieve stable grounding connection to the equipment inside the cabinet through multiple connection components. The side connection method allows for quick installation and removal of the grounding wire during subsequent grounding wire management and disassembly operations. At the same time, the grounding resistance monitoring unit monitors the resistance value of the grounding system in real time during operation to ensure the safety and stability of the grounding system, and realizes real-time monitoring of the usage of the grounding wire to ensure the overall grounding stability of the equipment. Attached Figure Description

[0019] Figure 1 This is a front-view three-dimensional structural diagram of the railway power grounding safety monitoring device of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the railway power grounding safety monitoring device of this utility model;

[0021] Figure 3 This is a side sectional view of the railway power grounding safety monitoring device of this utility model.

[0022] Figure 4This is a schematic block diagram showing the structural relationship of the railway power grounding safety monitoring device described in this utility model;

[0023] In the diagram: 1. Monitoring box, 2. Fixing plate, 3. Hinge, 4. Box door, 5. Partition, 6. First insulation layer, 7. Mounting bracket, 8. Grounding resistance monitoring unit, 9. Slide groove, 10. Sliding plate, 11. Insulating sleeve, 12. Connecting screw, 13. Washer, 14. Nut, 15. Second insulation layer, 16. Insulating bracket, 17. Mounting plate, 18. Fixing hole, 19. Strip hole, 20. Strip heat dissipation hole, 21. Lifting handle, 22. Vent hole. Detailed Implementation

[0024] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example: Please refer to Figure 1-4 The railway power grounding safety monitoring device includes a monitoring box 1, two fixing plates 2 at the lower end of the monitoring box 1, two hinges 3 installed on one side of the front end of the monitoring box 1, a box door 4 connected to the two hinges 3, a grounding monitoring structure installed at the lower end of the monitoring box 1, and an insulation installation structure installed at the upper end of the monitoring box 1.

[0026] The grounding monitoring structure includes: a partition 5, a first insulating layer 6, a mounting frame 7, a grounding resistance monitoring unit 8, two sliding grooves 9, a sliding plate 10, and several connecting components;

[0027] The partition 5 is fixedly installed inside the monitoring box 1. The first insulation layer 6 is fixedly installed on the lower wall of the monitoring box 1. The mounting bracket 7 is installed on the upper end of the first insulation layer 6 by bolts. The grounding resistance monitoring unit 8 is installed on the upper end of the mounting bracket 7 by bolts. Two sliding grooves 9 are respectively installed on the two side walls inside the monitoring box 1. The two ends of the sliding plate 10 are respectively movably embedded in the two sliding grooves 9. There are four connecting components, two of which are respectively embedded on the two sides of the monitoring box 1, and the other two are installed on the partition 5.

[0028] When conducting grounding safety monitoring of railway power cabinets, the staff first installs the electrical integrity monitoring unit, ground potential backflash monitoring unit, and communication management unit in the upper insulating mounting structure inside the monitoring box 1. Then, the mounting bracket 7 is fixed to the upper end of the first insulating layer 6 with bolts, and the grounding resistance monitoring unit 8 is fixed to the upper end of the mounting bracket 7. According to the installation requirements of the grounding wire, two designated connection components are selected to connect the grounding resistance monitoring unit 8 to the grounding wire and the outer grounding wire of the monitoring box 1. During use, the sliding plate 10 is moved to the lower end of the two sliding grooves 9 to enclose and protect the grounding resistance monitoring unit 8.

[0029] The grounding safety integrated monitoring system adopted in this application consists of a grounding safety integrated monitoring cabinet installed in a 10kV substation, an armored cable monitoring box installed in a disconnector room, and grounding safety integrated monitoring equipment installed in a 10 / 0.4kV substation. The armored cable monitoring box integrates an armored cable monitoring unit and a communication management unit, while the grounding safety integrated monitoring equipment integrates a ground potential backflash monitoring unit, an armored cable monitoring unit, and a communication management unit. The functional units within each monitoring cabinet, monitoring box, and monitoring equipment are responsible for specific grounding safety monitoring within their respective areas. Monitoring information is collected at the monitoring cabinet via a bus or fiber optic cable for unified management. The system's monitoring functions include:

[0030] (1) The integrated monitoring cabinet has a built-in grounding resistance monitoring unit 8, which is connected to the auxiliary grounding electrode and the grounding busbar to monitor the grounding resistance value at the grounding busbar in the substation.

[0031] (2) The integrated monitoring cabinet has a built-in electrical integrity monitoring unit to monitor the grounding electrical integrity of high-voltage cabinets, secondary monitoring equipment, voltage regulators and other equipment in the substation;

[0032] (3) The integrated monitoring cabinet and monitoring equipment are all equipped with a ground potential backflash monitoring unit, which is connected to the ground potential backflash transformer to monitor the backflash current entering the substation and power distribution station from the grounding wire of the grounding grid.

[0033] (4) The monitoring box and monitoring equipment are equipped with armored cable monitoring units, which are connected to power frequency / lightning current transformers to monitor the power frequency high voltage and lightning impulse current on the 10kV cable steel armor in the disconnecting switch room and substation.

[0034] (5) The integrated monitoring cabinet, monitoring box and monitoring equipment are all equipped with a built-in communication management unit, providing RS485 interface, RJ45 interface or SC / FC optical port to meet the communication requirements of the monitoring box and monitoring equipment to access the integrated monitoring cabinet, and support the integrated monitoring cabinet to access platforms such as smart operation and maintenance system;

[0035] The integrated grounding safety monitoring system is mainly used to monitor the status of the grounding system of power facilities and electrical equipment, ensuring the safety, effectiveness, and reliability of the grounding system during operation. The following is a detailed introduction on how these monitoring units work together to achieve the functions of the integrated grounding safety monitoring system:

[0036] Grounding resistance monitoring unit 8;

[0037] Function: Grounding resistance monitoring unit 8 is responsible for real-time monitoring of the resistance value of the grounding system; grounding resistance is a key parameter for judging whether the grounding system is effective. Excessive grounding resistance may lead to poor equipment grounding and increase the risk of electrical accidents.

[0038] Working principle: The monitoring unit collects changes in grounding resistance in real time through a dedicated sensor or voltage and current measuring equipment; when the grounding resistance exceeds the preset safety threshold, the monitoring unit will issue an alarm signal.

[0039] Cooperation with other units: The data from the grounding resistance monitoring unit 8 can be used by other units for further analysis. When the grounding resistance value is abnormal, the electrical integrity monitoring unit will check whether there are problems such as open circuit or looseness in the grounding line, depending on the situation.

[0040] Electrical integrity monitoring unit;

[0041] Function: The electrical integrity monitoring unit is used to monitor the integrity of the grounding system and its related electrical equipment; this includes monitoring the grounding cables, grounding electrodes, and connection points to ensure there are no open circuits, corrosion, or other problems that affect the function of the grounding system;

[0042] Working principle: This unit typically monitors the integrity of grounding lines and electrical equipment through methods such as current monitoring and insulation resistance measurement; if there is an open circuit or poor electrical contact in the grounding wire, the system will issue a warning signal;

[0043] Coordination with other units: When the electrical integrity monitoring unit detects a fault in the grounding cable or connection point, the communication management unit can transmit an alarm to the monitoring center; at the same time, the value of the grounding resistance monitoring unit 8 can also be used as one of the bases for judging electrical integrity.

[0044] Ground potential backflash monitoring unit;

[0045] Function: The ground potential backflash monitoring unit is mainly used to monitor the ground potential changes (such as voltage fluctuations during electrical faults) that may occur in the grounding system under abnormal conditions such as electrical faults or lightning strikes; potential fluctuations may cause unstable grounding current, affecting equipment safety;

[0046] Working principle: By monitoring changes in the ground potential of the grounding system, this unit can identify the ground potential difference in the grounding system under abnormal conditions and take appropriate protective measures.

[0047] Coordination with other units: The monitoring results of the ground potential backflash monitoring unit can trigger the response of other monitoring units; if an abnormal ground potential is detected, the electrical integrity monitoring unit will initiate further inspection of the electrical connections of the grounding equipment;

[0048] Communication Management Unit;

[0049] Function: The communication management unit is the control center of the entire grounding safety integrated monitoring system. It is responsible for data transmission and coordination between various monitoring units, and provides real-time data to the remote monitoring platform.

[0050] Working principle: The communication management unit collects monitoring data (such as grounding resistance, electrical integrity, ground potential, etc.) from each monitoring unit through wireless or wired communication and monitors the status of the grounding system in real time; when an abnormality is detected, the communication management unit will transmit alarm information to the management platform or alarm system for timely handling by maintenance personnel;

[0051] Integration with other units: The communication management unit integrates monitoring data from other monitoring units to form a unified monitoring interface, and can comprehensively display alarm information from different units, making it convenient for maintenance personnel to diagnose problems; at the same time, the communication management unit can also adjust or restart certain monitoring units remotely according to system settings.

[0052] Secondly, comprehensive coordination and functional implementation:

[0053] These monitoring units work together to achieve the various functions of the integrated grounding safety monitoring system:

[0054] Real-time data acquisition and alarm: The grounding resistance monitoring unit 8, the electrical integrity monitoring unit and the ground potential backflash monitoring unit monitor various key indicators of the grounding system in real time. When an indicator exceeds the safety threshold, each unit will issue an alarm independently, and the communication management unit will summarize the alarm information.

[0055] Fault location and diagnosis: Multiple monitoring units working together can help quickly locate the source of faults in the grounding system. For example, if the electrical integrity monitoring unit detects a problem with the grounding cable, the high resistance warning from the grounding resistance monitoring unit 8 can further verify the nature of the fault in the grounding system.

[0056] Remote monitoring and management: The communication management unit aggregates data and provides remote monitoring functions, allowing maintenance personnel to check the health status of the grounding system at any time and perform remote diagnosis and maintenance operations through the management platform;

[0057] The above operations provide safety assurance for railway operations;

[0058] This system comprehensively monitors grounding resistance, equipment grounding reliability, ground potential backflash distribution, armored cable safety status, SPD status, etc. in the substation, reflecting the overall on-site safety status, assisting users to keep abreast of the basic operating conditions of each station, reducing the risk of fire accidents, and providing safety assurance for operation.

[0059] Simplify operation, maintenance, and monitoring work;

[0060] Traditional methods require professional personnel to regularly bring specialized instruments to the site for monitoring; this involves a large workload and consumes significant human resources. This system adopts an online monitoring mode and can accumulate historical data and analyze and predict trends, directly providing operational units with analytical conclusions and suggested solutions. This further reduces the workload of personnel while enabling rapid problem detection and handling, thus improving overall operational efficiency.

[0061] The monitoring mode is safe and reliable;

[0062] The system uses a safe test signal source and can flexibly configure the monitoring time and frequency. It monitors during railway shutdown and maintenance windows. During non-working hours, the system is disconnected from the object under test and does not affect the normal operation of other equipment.

[0063] Convenient human-computer interaction;

[0064] The integrated monitoring cabinet is equipped with a local touch screen and human-machine interaction system, which displays monitoring data and alarm information locally, and supports the configuration of various parameters, making it convenient for on-site installation, commissioning and subsequent operation and maintenance; it supports access to the intelligent operation and maintenance platform for unified management, with a high degree of integration and no additional management burden.

[0065] In the specific implementation process, one of the connecting components includes: an insulating sleeve 11, a connecting screw 12, two washers 13 and two nuts 14;

[0066] When installing the connecting components on the partition 5, the insulating sleeve 11 is movably embedded in one side of the partition 5, the connecting screw 12 is movably embedded in the insulating sleeve 11, the two washers 13 are respectively movably fitted on both ends of the connecting screw 12, and the two nuts 14 are respectively movably fitted on both sides of the connecting screw 12, and both are located outside the two washers 13.

[0067] When connecting the grounding wire, first insert the insulating sleeve 11 into the pre-machined mounting hole at the upper end of the partition 5, then insert the connecting screw 12 into the insulating sleeve 11, and then fit two washers 13 and two bolts onto the two ends of the connecting screw 12 to fix the connecting screw 12. Finally, connect the grounding wire inside the cabinet and the grounding wire outside to the two ends of the connecting screw 12 respectively. The grounding wire is connected by the conductivity of the connecting screw 12.

[0068] In the specific implementation process, the insulation installation structure includes: a second insulation layer 15, an insulation bracket 16, a mounting plate 17, and several fixing holes 18;

[0069] The second insulation layer 15 is located on the inner wall of the monitoring box 1. The insulation bracket 16 is fixedly installed on the upper end of the inner rear wall of the monitoring box 1. The mounting plate 17 is installed on the front end of the insulation bracket 16. Several fixing holes 18 are evenly opened on the upper end of the mounting plate 17.

[0070] When installing the matching unit modules, the unit modules can be stably installed through the fixing holes 18 on the upper end of the mounting plate 17. Different installation positions can be selected according to different installation requirements. Through the set second insulating layer 15 and insulating bracket 16, the conductive effect between the unit module and the monitoring box 1 can be effectively isolated during subsequent use, so as to avoid damage to the unit module.

[0071] In the specific implementation process, the fixing piece 2 is an L-shaped fixing piece 2, and a strip hole 19 is opened on one side of the fixing piece 2.

[0072] The monitoring box 1 can be fixed in a designated position by bolts through the strip hole 19 set at the upper end of the L-shaped fixing plate 2, ensuring the overall installation stability of the monitoring box 1.

[0073] In the specific implementation process, five strip-shaped heat dissipation holes 20 are opened at the upper end of the cabinet door 4.

[0074] In the specific implementation process, a lifting handle 21 is installed on the upper part of the front wall of the sliding plate 10, and three ventilation holes 22 are opened at the upper end of the sliding plate 10.

[0075] The sliding plate 10 can be quickly adjusted by the lifting handle 21. At the same time, the overall heat dissipation effect of the unit module and the grounding resistance monitoring unit 8 can be ensured by the multiple strip-shaped heat dissipation holes 20 and the ventilation holes 22.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A railway power grounding safety monitoring device, comprising a monitoring housing (1), characterized in that, The monitoring box (1) has two fixing plates (2) at the lower end, and two hinges (3) are installed on one side of the front end of the monitoring box (1). The two hinges (3) are connected to the box door (4). The monitoring box (1) has a grounding monitoring structure installed at the lower end and an insulation installation structure installed at the upper end. The grounding monitoring structure includes: a partition (5), a first insulating layer (6), a mounting bracket (7), a grounding resistance monitoring unit (8), two sliding grooves (9), a sliding plate (10), and several connecting components; The partition (5) is fixedly installed inside the monitoring box (1), the first insulation layer (6) is fixedly installed on the lower inner wall of the monitoring box (1), the mounting bracket (7) is installed on the upper end of the first insulation layer (6) by bolts, the grounding resistance monitoring unit (8) is installed on the upper end of the mounting bracket (7) by bolts, the two sliding grooves (9) are respectively installed on the inner side walls of the monitoring box (1), the two ends of the sliding plate (10) are respectively movably embedded in the two sliding grooves (9), and the connecting components are respectively embedded on both sides of the monitoring box (1) and the partition (5).

2. The railway power grounding safety monitoring device according to claim 1, characterized in that, One of the connecting components includes: an insulating sleeve (11), a connecting screw (12), two washers (13), and two nuts (14); The insulating sleeve (11) is movably fitted onto the partition (5) or the monitoring box (1), the connecting screw (12) is movably fitted into the insulating sleeve (11), the two gaskets (13) are respectively movably fitted onto both ends of the connecting screw (12), and the two nuts (14) are respectively movably fitted onto both sides of the connecting screw (12), and are both located outside the two gaskets (13).

3. The railway power grounding safety monitoring device according to claim 1, characterized in that, The insulating mounting structure includes: a second insulating layer (15), an insulating bracket (16), a mounting plate (17), and several fixing holes (18); The second insulating layer (15) is located on the inner wall of the monitoring box (1), the insulating bracket (16) is fixedly installed on the upper end of the inner rear wall of the monitoring box (1), the mounting plate (17) is installed on the front end of the insulating bracket (16), and a plurality of fixing holes (18) are evenly distributed on the mounting plate (17).

4. The railway power grounding safety monitoring device according to claim 1, characterized in that, The fixing piece (2) is L-shaped, and a strip hole (19) is provided on one side of the fixing piece (2).

5. The railway power grounding safety monitoring device according to claim 1, characterized in that, The upper end of the cabinet door (4) is provided with five strip-shaped heat dissipation holes (20).

6. The railway power grounding safety monitoring device according to claim 1, characterized in that, A lifting handle (21) is installed on the upper end of the front wall of the sliding plate (10), and three ventilation holes (22) are provided on the sliding plate (10).

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