A microcomputer protection device

Abstract

The application relates to a microcomputer protection device and relates to the field of microcomputer protection components. The device comprises a protection box frame, a cabinet door, a back plate and an assembling piece. The cabinet door is rotationally connected to the front end opening of the protection box frame, and the back plate is fixed to the rear end opening of the protection box frame. A plurality of assembling sliding plates are fixed horizontally on the inner vertical end surface of the back plate in the vertical direction. The assembling piece is detachably assembled on the assembling sliding plates. A plurality of assembling pieces on the assembling sliding plates are respectively connected with a main control module, an analog quantity acquisition module, a switch quantity input module, a switch quantity output module, a man-machine interaction module and a communication module. Positioning holes are formed through the assembling sliding plates. Compared with the traditional bolt fixation of each module, the technology has the advantages of less time consumption in multi-module combined installation, less downtime recovery time of the system due to module failure, improved recovery efficiency and significantly reduced power supply interruption risk.

Description

Technical Field

[0001] This application relates to the technical field of microcomputer protection components, and in particular to a microcomputer protection device. Background Technology

[0002] In the process of power system transformation towards large-scale and intelligent operation, relay protection devices, as guardians of power grid safety, undertake the core responsibilities of fault detection, isolation and isolation. Their performance directly determines the stability of power grid operation and the reliability of power supply. With the widespread access of ultra-high voltage power grids and distributed power sources, as well as the deep application of integrated automation systems, the power grid structure is becoming increasingly complex and the operating conditions are becoming more and more varied. The inherent defects of traditional electromagnetic relay protection devices have become a key bottleneck restricting the safe and efficient operation of the power grid and cannot meet the development needs of modern power systems. Existing relay protection devices are highly integrated and simplified, integrating multiple protection function modules into a single device and securing it inside the protection box with multiple bolts. This significantly reduces the number of components and wiring inside the cabinet, shrinks the installation space, and improves system reliability.

[0003] Regarding the aforementioned technologies, the inventors discovered that when multiple protection function modules are integrated and installed in the protection enclosure, it is necessary to disassemble and reassemble multiple bolts used to lock the modules inside the enclosure during subsequent maintenance and disassembly of different modules. The disassembly and reassembly of multiple bolts is cumbersome, and replacing function modules is time-consuming, affecting system recovery. Utility Model Content

[0004] To overcome the problem that existing protection modules are integrated and installed in the protection enclosure, and that subsequent maintenance and disassembly of different modules require the removal and installation of multiple bolts used to lock the modules inside the enclosure, which is cumbersome and time-consuming, affecting system recovery, this application provides a microcomputer protection device.

[0005] The microcomputer protection device provided in this application adopts the following technical solution: A microcomputer protection device includes a protection box frame, a cabinet door, a back panel, and assembly components. The cabinet door is rotatably connected to the front opening of the protection box frame, and the back panel is fixed to the rear opening of the protection box frame. Multiple assembly slides are horizontally fixed along the vertical direction on the inner vertical end face of the back panel, and assembly components are detachably assembled on the multiple assembly slides. A main control module, an analog quantity acquisition module, a digital quantity input module, a digital quantity output module, a human-machine interaction module, and a communication module are respectively snapped onto the multiple assembly components on the multiple assembly slides. Positioning holes are provided through the multiple assembly slides. The assembly components include a sliding block, a sliding frame, and a clamp. The sliding block is horizontally slidably inserted into the assembly slide, and a sliding frame is horizontally fixed on both sides of the front face of the sliding block. A screw hole slider is horizontally slidably assembled inside the sliding frame, and a clamp is fixed on the front face of the screw hole slider. A positioning rod is vertically slidably inserted through the top surface of the sliding block, and the positioning rod is inserted through the positioning hole on the assembly slide.

[0006] By adopting the above technical solutions, the protective box frame in the microcomputer protection device is used to encapsulate and protect the internal electronic components, ensuring their stable operation in harsh environments. The cabinet door design facilitates maintenance personnel's inspection and replacement of parts. The back panel is equipped with multiple modular sliding plates, which allow for easy installation and removal of various functional modules, improving the device's flexibility and scalability. The modular assembly, serving as a carrier for the modular design, houses the main control module, analog quantity acquisition module, digital input module, digital output module, human-machine interface module, and communication module. Each module is responsible for different functions, such as data acquisition, logic control, and human-machine interaction, achieving comprehensive protection functions. The presence of positioning holes ensures precise positioning of each module, enhancing the overall stability and reliability of the device. This device achieves integrated protection functions through modular design and integrated functionality, not only facilitating maintenance and expansion but also effectively improving the stability and reliability of system operation, providing strong support for the safe operation of the power system.

[0007] Optionally, the rear sides of both ends of the protective box frame are fixed with mounting brackets, and the mounting brackets are assembled and fixed with fixing screws.

[0008] By adopting the above technical solution, in the design of the protective box frame, the rear fixing seats on both ends are used to fix and assemble the entire device, and can be easily installed and disassembled by fixing screws.

[0009] Optionally, wire threading hole seats are fixed through the upper and lower ends of the protective box frame, and multiple wire holes are vertically opened through the wire threading hole seats.

[0010] By adopting the above technical solution, the wire-passing hole seats at the top and bottom ends and the multiple wire holes therein are designed for wire passing, so that the wires can pass smoothly through the protective box frame.

[0011] Optionally, a rubber cylinder is vertically fixed in each of the multiple wire holes of the wire hole holder, and multiple elastic pieces are vertically fixed inside the rubber cylinder.

[0012] By adopting the above technical solution, the rubber cylinder is installed in the wire hole, and the internal elastic sheet can generate a certain clamping force on the passing wire, ensuring the wire is fixed while preventing damage. This design not only facilitates the installation and disassembly of the line, but also effectively secures the line, preventing it from loosening or falling off, while protecting it from physical damage.

[0013] Optionally, a locking screw is horizontally rotatably connected to the outer side of the cabinet door, and a locking screw hole bracket is fixed to one side of the protective box frame, and the locking screw hole bracket is threadedly assembled with the locking screw.

[0014] By adopting the above technical solution, the locking screw serves to secure the cabinet door via a threaded connection, ensuring that it cannot be easily opened when closed, thus providing a certain level of security and convenience. The locking screw hole bracket on the protective box frame is designed to mate with the locking screw, providing mounting holes so that the locking screw can be firmly fixed to the cabinet door.

[0015] Optionally, the slide frame is horizontally rotatably connected to an adjusting screw, and the adjusting screw is threaded through the slide block.

[0016] By adopting the above technical solution, the relative position can be adjusted by the adjusting screw connected by horizontal rotation inside the slide frame. The thread passes through the slide block, and the precise displacement of the slide frame in the slide block can be achieved by rotating the adjusting screw.

[0017] Optionally, rubber sheets are fixed to the inner vertical end faces of the clamp.

[0018] By adopting the above technical solution, the rubber sheet on the inner side of the clamp plays a good role in buffering and shock absorption, ensuring that the items are firmly clamped without causing damage.

[0019] Optionally, a positioning spring is vertically fitted on the positioning rod frame, and the two ends of the positioning spring are respectively fixed to the top surface of the positioning rod frame and the sliding block.

[0020] By adopting the above technical solution, the positioning spring on the positioning rod can provide appropriate elasticity during clamping, helping the clamp to clamp the object more stably, while the fixation at both ends of the spring ensures the stability of the system. This design achieves precise adjustment through adjusting the screw, provides cushioning protection with the rubber sheet, and ensures clamping stability with the positioning spring, thus realizing an efficient and stable object clamping function overall.

[0021] In summary, this application includes at least one of the following beneficial technical effects: Through the assembly component clamping and backplate quick-locking structure, boltless assembly and disassembly of modules are achieved, significantly improving maintenance efficiency. Elastic clamping replaces bolt fixing, reducing the time required for single-module assembly and disassembly. Various functional modules, such as the main control module and analog signal acquisition module, are elastically clamped and fixed by two clamps on the assembly component. Only the adjusting screw needs to be rotated to clamp or loosen the module, eliminating the need to remove bolts one by one. The entire process of single-module disassembly, replacement, and reassembly is time-efficient, improving efficiency compared to traditional solutions and effectively solving the pain point of cumbersome bolt removal and assembly. The backplate sliding insertion and positioning locking make multi-module assembly and disassembly more efficient. The assembled multi-module assembly can be quickly inserted by sliding along the assembly slide plate on the backplate using a sliding block. Pulling the positioning rod to compress the positioning spring completes the position adjustment. After releasing, the positioning spring pushes the positioning rod into the positioning hole, achieving immediate locking of the assembly component. Compared to traditional module-by-module bolt fixing, this technology allows for multi-module assembly with less time consumption, reduced downtime and recovery time due to module failure, improved recovery efficiency, and significantly reduced risk of power grid outages. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3 This is a schematic diagram of the structure of the protective box frame in an exploded state according to an embodiment of this application; Figure 4 This is a schematic diagram of the backplate in an exploded state according to an embodiment of this application; Figure 5 This is a structural schematic diagram of the assembled components in the disassembled state according to the embodiments of this application.

[0023] Explanation of reference numerals in the attached diagram: 1. Protective box frame; 11. Fixing base; 12. Locking screw hole bracket; 13. Fixing screw; 14. Wiring hole bracket; 15. Rubber cylinder; 16. Elastic sheet; 2. Cabinet door; 21. Locking screw; 3. Back panel; 31. Assembled sliding plate; 32. Positioning hole; 4. Assembled component; 41. Slide block; 42. Slide frame; 43. Adjusting screw; 44. Positioning rod bracket; 45. Positioning spring; 46. Clamp; 47. Screw hole slider; 48. Rubber sheet; 5. Main control module; 6. Analog signal acquisition module; 7. Digital signal input module; 8. Digital signal output module; 9. Human-machine interaction module; 10. Communication module. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] This application discloses a microcomputer protection device. (Refer to...) Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A microcomputer protection device includes a protection box frame 1, a cabinet door 2, a back panel 3, and assembly components 4. The cabinet door 2 is rotatably connected to the front opening of the protection box frame 1, and the back panel 3 is fixed to the rear opening of the protection box frame 1. Multiple assembly slides 31 are horizontally fixed along the vertical direction on the inner vertical end face of the back panel 3, and assembly components 4 are detachably assembled on the multiple assembly slides 31. A main control module 5, an analog quantity acquisition module 6, a digital quantity input module 7, a digital quantity output module 8, a human-machine interaction module 9, and a digital quantity control module 1 are respectively snapped onto the multiple assembly components 4 on the multiple assembly slides 31. The communication module 10 has a positioning hole 32 through it on multiple assembled slide plates 31. The assembly component 4 includes a sliding block 41, a sliding frame 42 and a clamp 46. The sliding block 41 is horizontally slidably inserted into the assembled slide plate 31, and the sliding frame 42 is horizontally fixed on both sides of the front end face of the sliding block 41. The sliding frame 42 is horizontally slidably assembled with a screw hole slider 47 inside, and the clamp 46 is fixed on the front end face of the screw hole slider 47. The positioning rod 44 is vertically slidably inserted into the top surface of the sliding block 41, and the positioning rod 44 is inserted into the positioning hole 32 on the assembled slide plate 31.

[0026] By adopting the above technical solutions, in the microcomputer protection device, the protection box frame 1 is used to encapsulate and protect the internal electronic components, ensuring their stable operation in harsh environments; the design of the cabinet door 2 facilitates maintenance personnel's inspection and replacement of parts. The back panel 3 is equipped with multiple assembly slides 31, through which various functional modules can be easily installed and disassembled, improving the device's flexibility and scalability. The assembly component 4, as a modular carrier, carries the main control module 5, analog quantity acquisition module 6, digital quantity input module 7, digital quantity output module 8, human-machine interaction module 9, and communication module 10, etc. Each module is responsible for different functions, such as data acquisition, logic control, and human-machine interaction, realizing comprehensive protection functions. The presence of positioning holes 32 ensures the precise positioning of each module, enhancing the overall stability and reliability of the device. This device achieves integrated protection functions through modular design and integrated functions, which not only facilitates maintenance and expansion but also effectively improves the stability and reliability of system operation, providing a strong guarantee for the safe operation of the power system.

[0027] Reference Figure 3The protective box frame 1 has mounting bases 11 fixed to the rear sides of both end faces, and these mounting bases 11 are assembled and secured by fixing screws 13. In the design of the protective box frame 1, the mounting bases 11 on the rear sides of both end faces are used to fix and assemble the entire device, and can be easily installed and removed using the fixing screws 13. The upper and lower ends of the protective box frame 1 are both fixed with wire hole seats 14, and multiple wire holes are vertically opened on the wire hole seats 14. The wire hole seats 14 and their multiple wire holes at the upper and lower ends are designed for wire threading, allowing the wires to pass smoothly through the protective box frame. Rubber cylinders 15 are vertically fixed in the multiple wire holes of the wire hole seats 14, and multiple elastic pieces 16 are vertically fixed inside the rubber cylinders 15. The rubber cylinders 15 are installed in the wire holes, and the internal elastic pieces 16 can generate a certain clamping force on the passing wires, ensuring the wires are fixed while preventing damage. This design not only facilitates the installation and removal of the wires but also effectively secures the wires, preventing them from loosening or falling off, while protecting them from physical damage.

[0028] Reference Figure 3 A locking screw 21 is horizontally rotatably connected to the outer side of the cabinet door 2. A locking screw hole bracket 12 is fixed to one side of the protective box frame 1, and the locking screw hole bracket 12 is threadedly assembled with the locking screw 21. The function of the locking screw 21 is to fix the cabinet door 2 by threaded connection, ensuring that it cannot be easily opened when closed, providing a certain degree of safety and convenience. The locking screw hole bracket 12 on the protective box frame 1 is used to cooperate with the locking screw 21, providing mounting holes so that the locking screw can be firmly fixed to the cabinet door.

[0029] Reference Figure 4 and Figure 5 An adjusting screw 43 is horizontally rotatably connected inside the sliding frame 42, and the adjusting screw 43 is threaded through the sliding block 41. The adjusting screw 43, connected horizontally inside the sliding frame 42, allows for relative position adjustment. The screw threaded through the sliding block 41 allows for precise displacement of the sliding frame within the sliding block by rotating the adjusting screw. Rubber sheets 48 are fixed to the inner vertical end faces of the clamping bracket 46. The rubber sheets 48 on the inner side of the clamping bracket 46 provide good cushioning and shock absorption, ensuring that the clamped items are secure without causing damage. A positioning spring 45 is vertically sleeved on the positioning rod bracket 44, and both ends of the positioning spring 45 are fixed to the top surface of the positioning rod bracket 44 and the sliding block 41, respectively. The positioning spring 45 on the positioning rod bracket 44 provides appropriate elasticity during clamping, helping the clamping bracket 46 to clamp the object more stably, while the fixing of the spring ends ensures the stability of the system. This design achieves precise adjustment through adjusting screw 43, provides cushioning protection with rubber sheet 48, and ensures stable clamping with positioning spring, thus realizing an efficient and stable item clamping function.

[0030] The implementation principle of a microcomputer protection device according to an embodiment of this application is as follows: First, the main control module 5, analog signal acquisition module 6, digital signal input module 7, digital signal output module 8, human-machine interface module 9, and communication module 10 are respectively inserted between the two clamps 46 of the assembly component 4. Then, the adjusting screws 43 on the sliding frames 42 on both sides of the slide block 41 are rotated, and the threaded drive screw hole slider 47 moves laterally in the sliding frame 42, so that the two clamps 46 squeeze and hold the main control module 5, analog signal acquisition module 6, digital signal input module 7, digital signal output module 8, and human-machine interface module 10. Module 9 and communication module 10 are kept in stable installation. Then, according to the installation requirements, the assembly piece 4 with multiple modules is pulled up by the positioning rod 44 on the top surface of the slide block 41, which causes the positioning spring 45 to deform and slide into the assembly slide plate 31 of the back plate 3 in sequence. Then, the positioning rod 44 is released and, under the deformation force of the positioning spring 45, the positioning rod 44 is pushed into the positioning hole 32 of the assembly slide plate 31, locking the assembly piece 4 with multiple modules installed on the back plate 3. Then, the connecting cable is passed through the wire hole of the wire hole seat 14 on the bottom surface of the protective box frame 1, and then connected to multiple modules inside the protective box frame 1 respectively. The output cables of multiple modules are passed out through the wire hole of the wire hole seat 14 on the top surface of the protective box frame 1. The cables are kept stable by the elastic compression of multiple elastic pieces 16 in the inner cavity of the rubber cylinder 15 in the wire hole of the protective box frame 1. The fixing seat 11 on the protective box frame 1 is fixed and installed with fixing screws 13 to keep it stable. The cabinet door 2 is rotated and closed on the front end face of the protective box frame 1. The locking screw 21 is screwed onto the locking screw hole bracket 12 to ensure that the cabinet door 2 is installed stably on the protective box frame 1. Finally, the analog signal acquisition module 6 is responsible for acquiring analog signals such as current and voltage of the power line in real time through current transformers and voltage transformers, performing signal conditioning and analog-to-digital conversion, and sending the digital signals to the main control module; the digital signal input module 7 receives external switch status signals, which are then sent to the main control module after opto-isolation; the digital signal output module 8 receives trip or close commands from the main control module, controls the opening and closing of the circuit breaker through the drive circuit, and also uses opto-isolation to enhance anti-interference capability; the human-machine interface module 9 includes an LCD screen and buttons, used to display real-time operating parameters, protection settings, and alarm information locally, and allows on-site personnel to set and query parameters; the communication module 10 provides a standard communication interface, supporting communication protocols such as Modbus and IEC-61850, enabling the device to exchange data with the upper-level monitoring system, realize remote monitoring, setting modification, and fault information uploading; the main control module 5, as the core of the device, consists of a high-performance microprocessor, program memory, and data memory. It internally stores protection algorithm programs, which can perform real-time analysis and calculation of the acquired data to determine whether a fault has occurred. Once the preset protection action conditions are met, control commands are issued according to the set logic and time limits to drive the switch output module to act. This combines high-precision data acquisition, high-speed data processing, flexible logic programming, and reliable action execution, making it suitable for ensuring the safe operation of power equipment in substations, power plants, industrial and mining enterprises, and other scenarios. Its core lies in using digital technology to dynamically monitor electrical quantities such as current and voltage, and to quickly disconnect the fault source when a fault is detected, preventing the accident from escalating.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A microcomputer-based protection device, characterized in that, The system includes a protective box frame (1), a cabinet door (2), a back panel (3), and assembly parts (4). The cabinet door (2) is rotatably connected to the front opening of the protective box frame (1), and the back panel (3) is fixed to the rear opening of the protective box frame (1). Multiple assembly slides (31) are horizontally fixed along the vertical direction on the inner vertical end face of the back panel (3), and the assembly parts (4) are detachably assembled on the multiple assembly slides (31). The multiple assembly parts (4) on the multiple assembly slides (31) are respectively snapped with a main control module (5), an analog quantity acquisition module (6), a digital quantity input module (7), a digital quantity output module (8), a human-machine interaction module (9), and a communication module (4). 10), and the multiple assembled slide plates (31) are provided with positioning holes (32). The assembly component (4) includes a sliding block (41), a sliding frame (42) and a clamp (46). The sliding block (41) is horizontally slidably inserted into the assembled slide plate (31). The sliding frame (42) is horizontally fixed on both sides of the front end face of the sliding block (41). The sliding frame (42) is horizontally slidably assembled with a screw hole slider (47) inside the sliding frame (42). The clamp (46) is fixed on the front end face of the screw hole slider (47). The positioning rod (44) is vertically slidably inserted into the top surface of the sliding block (41). The positioning rod (44) is inserted into the positioning hole (32) on the assembled slide plate (31).

2. The microcomputer protection device according to claim 1, characterized in that: The protective box frame (1) has a fixing seat (11) fixed on the rear side of both end faces, and the fixing seat (11) is fixedly assembled by fixing screws (13).

3. A microcomputer protection device according to claim 2, characterized in that: Both ends of the protective box frame (1) are fixed with wire hole seats (14), and multiple wire holes are vertically opened on the wire hole seats (14).

4. A microcomputer protection device according to claim 3, characterized in that: A rubber cylinder (15) is vertically fixed in each of the multiple wire holes of the threading hole seat (14), and multiple elastic pieces (16) are vertically fixed inside the rubber cylinder (15).

5. A microcomputer protection device according to claim 4, characterized in that: A locking screw (21) is horizontally rotatably connected to the outer side of the cabinet door (2), and a locking screw hole bracket (12) is fixed to one side of the protective box frame (1), and the locking screw hole bracket (12) is threadedly assembled with the locking screw (21).

6. A microcomputer protection device according to claim 1, characterized in that: The sliding frame (42) is horizontally rotatably connected to an adjusting screw (43), and the adjusting screw (43) is threaded through the sliding block (41).

7. A microcomputer protection device according to claim 6, characterized in that: Rubber sheets (48) are fixed on the inner vertical end face of the clamp (46).

8. A microcomputer protection device according to claim 7, characterized in that: A positioning spring (45) is vertically sleeved on the positioning rod frame (44), and the two ends of the positioning spring (45) are respectively fixed on the top surface of the positioning rod frame (44) and the slide block (41).

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