Generator protection device and system

Abstract

The invention relates to the technical field of generators and discloses a generator protection device and system.The protection device comprises a protection box, a generator is arranged in the protection box, a bearing table is located on the lower side of the generator and sleeved with an assembly table, and insertion shafts are inserted into assembly bases on the two sides of the top of the assembly table and connected with positioning clamping plates; through linkage of the hinge rod, the connecting rod, the transmission arm, the connecting frame, the driving plate, the driving rod, the lead screw and other components, the positioning clamping plates are opened and closed synchronously, the generator can be evenly clamped, equipment damage and shaking collision are avoided, and the bearing table is away from the ground so that electrical interference can be avoided. The protection system is integrated in the generator, the digital relay protection module meets the operation requirements of a power station, the microprocessor module processes data and cooperates with the programmable logic module, and the input and output module receives photoelectric signals and transmits control signals, so that the accuracy, adaptability and anti-interference capability of the system are improved.

Description

Technical Field

[0001] This invention relates to the field of generator technology, specifically to a generator protection device and system. Background Technology

[0002] Motor protection devices are key equipment used to protect generators from damage during operation. They monitor parameters such as generator current, voltage, and temperature to identify faults in a timely manner and take corresponding protective measures to prevent equipment damage or accidents. These protection devices can operate automatically or be implemented through manual intervention to ensure the safe and stable operation of the generator under various operating conditions.

[0003] Common generator protection devices often fail to ensure uniform clamping force distribution when clamping the generator, easily leading to excessive localized stress and equipment damage. They also cannot effectively limit generator displacement, causing it to shake and collide with the enclosure, affecting operational stability. Furthermore, the generator's contact with the ground during operation can generate electrical interference, posing a safety hazard. Existing generator protection systems are not precise enough in meeting the reliability requirements for safe power plant operation, prone to false trips and failures to trip, have low efficiency in data processing and logic control integration, are difficult to flexibly adapt to different scenarios, and have weak anti-interference capabilities for external signal reception, failing to meet the generator's operational requirements. Therefore, a generator protection device and system are proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a generator protection device and system to solve the technical problems of uneven clamping force, unstable operation, electrical interference, low accuracy of the protection system, poor adaptability, and weak anti-interference.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a generator protection device, comprising: A protective box, in which a generator is inserted, and a support platform is inserted in the inner cavity of the protective box at the lower side of the generator, and an assembly platform is fitted on the outside of the support platform; The assembly base is installed on both sides of the top of the assembly table. Each assembly base has a shaft inserted inside. The end of each shaft facing the generator is connected to a positioning clamp. The top of the assembly table and the side of the positioning clamp are hinged with hinge rods. A connecting rod is movably connected to the upper surface of a hinged rod. A transmission arm is hinged to the lower surface of the connecting rod. A connecting frame is installed on the outer side of each transmission arm, and a drive plate is installed on the lower side of each connecting frame. The drive rod is hinged to the bottom of the drive plate. Angle brackets are fitted on the outer ends of the drive rods. A lead screw is connected to the outer side of the angle brackets through a bearing.

[0006] A generator protection system, based on the above-mentioned generator protection device, includes: The generator includes a digital relay protection module, a microprocessor module, a programmable logic module, and an input / output module. The digital relay protection module is constructed using microprocessor logic and is used to meet the requirements of power plant safety operation and contractual documents regarding reliability, selectivity, sensitivity, and speed. The digital relay protection module, microprocessor module, programmable logic module, and input / output module are all integrated inside the generator. The microprocessor module is used to process and analyze the data collected by the digital relay protection module. The programmable logic module is connected to the microprocessor module. The input / output module is connected to the digital relay protection module, the microprocessor module, and the programmable logic module respectively through signal lines. The input / output module is used to receive external photoelectric input signals and transmit them to the microprocessor module and programmable logic module for processing. At the same time, the control signals output by the microprocessor module and programmable logic module are transmitted to the output relay to drive the corresponding equipment to operate, and the system operating status and fault information are displayed intuitively by LED lights.

[0007] Preferably, the length of the insertion shaft is greater than that of the mounting base, the length of the positioning clamp is greater than that of the generator, and the top of each positioning clamp is connected to a pressure plate, which improves the stability of clamping the generator and the uniformity of the clamping force.

[0008] Preferably, a guide rail is connected to the center of the bottom of the assembly table, and a groove is formed inside the drive plate at a position corresponding to the guide rail, with the guide rail inserted into the groove. The added guide rail and the groove improve the stability of the drive plate during movement.

[0009] Preferably, a heat dissipation mesh is provided on the side of the protective box, and a screw-connecting sleeve is installed on the outside of the protective box at a position corresponding to the lead screw. The outer end of the lead screw passes through the interior of the protective box and the screw-connecting sleeve, which facilitates the rotation of the lead screw.

[0010] Preferably, a handwheel is coaxially connected to the outer end of the lead screw, and a cover is hinged to the top side of the protective box. A handle is installed on the outer side of the cover, and an anti-slip sleeve is fitted over the handle. The added handwheel facilitates the rotation of the lead screw, and the cover enhances the protection of the generator.

[0011] Preferably, the upper surface of the support platform is covered with an elastic buffer layer made of rubber, and the surface of the elastic buffer layer is provided with anti-slip protrusions, which improves the stability of the generator placed on the support platform surface.

[0012] Preferably, the number of pressure plates is 3-6 sets, and the side of the pressure plates and positioning clamps facing the generator is covered with an antistatic film. The bottom of the protective box is equipped with counterweight blocks on both sides to improve the placement stability of the protective box.

[0013] Preferably, the digital relay protection module includes an adaptive adjustment unit, which is connected to the microprocessor module via an internal high-speed communication line. The adaptive adjustment unit monitors the generator's operating parameters in real time. The microprocessor module is equipped with a redundant backup unit, which is connected to the microprocessor module via a data synchronization line. This redundant backup unit seamlessly switches to backup mode when the main microprocessor module fails, continuing to process and analyze the data collected by the digital relay protection module. The adaptive adjustment unit's real-time monitoring of generator operating parameters, combined with high-speed communication with the microprocessor module, allows the protection module to dynamically adapt to different operating states, improving the targeted nature of the protection response. The microprocessor's redundant backup unit can seamlessly switch in the event of a main module failure, ensuring uninterrupted data processing, preventing protection function failure, and enhancing the overall system reliability.

[0014] Preferably, the programmable logic module internally includes a remote programming interface and a wireless communication module. The remote programming interface is connected to an external terminal device via the wireless communication module. The input / output module includes a signal filtering unit, which is connected in series in the circuit of the input / output module that receives external photoelectric input signals. The signal filtering unit is used to filter the input photoelectric signals, removing noise and interference components. The remote programming interface and wireless communication module of the programmable logic module facilitate remote adjustment of logic settings via an external terminal, improving the flexibility of system debugging and maintenance. The signal filtering unit of the input / output module can filter out noise interference in the photoelectric signals, ensuring the purity of the input signals, providing a reliable data foundation for subsequent processing, and reducing misjudgments caused by interference.

[0015] Compared with the prior art, the present invention provides a generator protection device and system, which has the following beneficial effects: 1. This generator protection device, by rotating the lead screw to drive the swing of the drive rod, can pull the synchronous opening and closing movement of the drive plate. This allows the connecting rod and hinge rod to move through the connecting frame and transmission arm, thereby enabling the positioning clamp to open and close synchronously. This clamping protection for the generator ensures that the clamping force is evenly applied to the generator, avoiding equipment damage caused by excessive local force. At the same time, it effectively limits the displacement of the generator in the housing, preventing the generator from shaking and colliding with the housing, ensuring the stability of equipment operation. Furthermore, since the support platform is far from the ground, it can prevent the generator from contacting the ground when generating electricity, avoiding electrical interference from the generator, improving overall safety, and reducing the occurrence of safety hazards. 2. This generator protection system, with a digital relay protection module based on microprocessor logic, precisely meets the core requirements of power plant safety operation and contractual documents regarding reliability, selectivity, sensitivity, and speed. In actual operation, it can accurately distinguish between faults and normal operating states, effectively avoiding false trips and failures to trip, reducing the risk of fault escalation from the source. Simultaneously, the collaborative cooperation between the microprocessor module and the programmable logic module achieves efficient integration of data processing and logic control, flexibly adapting to the protection needs of different operating scenarios and enhancing system adaptability. The photoelectric input design of the input / output module improves the anti-interference capability of external signal reception. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the protective box structure of the present invention; Figure 3 This is a schematic diagram of the support platform and assembly platform structure of the present invention; Figure 4 This is a schematic diagram of the assembly table structure of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the assembly platform of the present invention; Figure 6 This is a schematic diagram of the chute structure of the present invention; Figure 7 This is a system architecture block diagram of the present invention.

[0017] In the diagram: 1. Protective box; 2. Generator; 3. Support platform; 4. Assembly platform; 5. Assembly base; 6. Insert shaft; 7. Positioning clamp; 8. Hinge rod; 9. Connecting rod; 10. Transmission arm; 11. Connecting frame; 12. Drive plate; 13. Drive rod; 14. Angle bracket; 15. Lead screw; 16. Guide rail; 17. Slide groove; 18. Pressure plate; 19. Handwheel; 20. Rotary sleeve. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a generator protection device and system, comprising a protection box 1, a generator 2, a support platform 3, an assembly platform 4, an assembly base 5, a plug shaft 6, a positioning clamp 7, a hinge rod 8, a connecting rod 9, a transmission arm 10, a connecting frame 11, a drive plate 12, a drive rod 13, an angle bracket 14, a lead screw 15, a guide rail 16, a slide groove 17, a pressure plate 18, a handwheel 19, and a rotating sleeve 20. Please see Figure 1 The generator 2 is installed inside the protection box 1. Please refer to [link / reference]. Figure 2 The inner cavity of the protection box 1 is fitted with a support platform 3 located below the generator 2. Please refer to [link / reference]. Figure 3 The support platform 3 is fitted with an assembly platform 4. The upper surface of the support platform 3 is covered with an elastic buffer layer made of rubber. The surface of the elastic buffer layer is provided with anti-slip protrusions. Please see Figure 4 Assembly base 5 is installed on the top two sides of the assembly platform 4. Insertion shaft 6 is inserted inside the assembly base 5. Positioning clamp 7 is connected to the end of the insertion shaft 6 facing the generator 2. Hinge rod 8 is hinged to the top of the assembly platform 4 and the side of the positioning clamp 7. The connecting rod 9 is movably connected to the upper surface of the hinge rod 8. The lower surface of the connecting rod 9 is hinged to the transmission arm 10. The outer side of the transmission arm 10 is equipped with a connecting frame 11, and the lower side of the connecting frame 11 is equipped with a drive plate 12. The drive rod 13 is hinged to the bottom of the drive plate 12. Angle brackets 14 are fitted onto the outer ends of the drive rod 13. A lead screw 15 is connected to the outer side of the angle bracket 14 via a bearing. The length of the insert shaft 6 is greater than that of the mounting base 5, and the length of the positioning clamp 7 is greater than that of the generator 2. A pressure plate 18 is connected to the top of each positioning clamp 7. (See also...) Figure 5 The bottom center of assembly table 4 is connected to guide rail 16. Please refer to [link / reference]. Figure 6 The drive plate 12 has a groove 17 at the position corresponding to the guide rail 16. The guide rail 16 is inserted into the groove 17. There are 3-6 sets of pressure plates 18. The pressure plates 18 and the positioning clamps 7 are covered with antistatic film on the side facing the generator 2. The bottom of the protective box 1 is equipped with counterweight blocks on both sides. By rotating the lead screw 15 to drive the swing of the drive rod 13, the synchronous opening and closing motion of the drive plate 12 can be pulled. This allows the connecting rod 9 and the hinge rod 8 to move through the connecting frame 11 and the transmission arm 10, thereby enabling the positioning clamp 7 to open and close synchronously. This clamps and protects the generator 2, ensuring that the clamping force is evenly applied to the generator 2, avoiding equipment damage caused by excessive local force. At the same time, it effectively limits the displacement of the generator 2 in the protection box 1, preventing the generator 2 from shaking and colliding with the protection box 1, ensuring the stability of equipment operation. Furthermore, since the support platform is far from the ground, the generator 2 can avoid contact with the ground when generating electricity, avoiding electrical interference from the generator 2, improving overall safety, and reducing the occurrence of safety hazards. The protective box 1 has a heat dissipation mesh on its side. The protective box 1 has a screw sleeve 20 installed on its exterior corresponding to the lead screw 15. The outer end of the lead screw 15 passes through the interior of the protective box 1 and the screw sleeve 20. The outer end of the lead screw 15 is coaxially connected to a handwheel 19. The top side of the protective box 1 is hinged with a box cover. The outer side of the box cover is equipped with a handle. The handle is covered with an anti-slip sleeve. Please see Figure 7 A generator protection system, based on the above-mentioned generator protection device, includes: The digital relay protection module, microprocessor module, programmable logic module, and input / output module are integrated inside generator 2. The digital relay protection module is constructed using microprocessor logic. The digital relay protection module is used to meet the requirements of power plant safety operation and contract documents for reliability, selectivity, sensitivity, and speed. The microprocessor module is used to process and analyze the data collected by the digital relay protection module. The programmable logic module is connected to the microprocessor module. The input / output module is connected to the digital relay protection module, the microprocessor module, and the programmable logic module respectively through signal lines. The input / output module is used to receive external photoelectric input signals and transmit them to the microprocessor module and programmable logic module for processing. At the same time, the control signals output by the microprocessor module and programmable logic module are transmitted to the output relay to drive the corresponding equipment to act, and the system operating status and fault information are displayed intuitively through LED lights. The digital relay protection module, with microprocessor logic at its core, precisely meets the core requirements of power plant safety operation and contractual documents regarding reliability, selectivity, sensitivity, and speed of operation. In actual operation, it can accurately distinguish between faults and normal operating states, effectively avoiding false trips and failures to trip, reducing the risk of fault escalation from the source. Simultaneously, the synergistic cooperation between the microprocessor module and the programmable logic module achieves efficient integration of data processing and logic control, flexibly adapting to the protection needs of different operating scenarios and enhancing system adaptability. The photoelectric input design of the input / output module improves the anti-interference capability of external signal reception. The digital relay protection module is equipped with an adaptive adjustment unit, which is connected to the microprocessor module through an internal high-speed communication line. The adaptive adjustment unit is used to monitor the operating parameters of the generator in real time. The microprocessor module is equipped with a redundant backup unit, which is connected to the microprocessor module through a data synchronization line. The redundant backup unit is used to seamlessly switch to backup mode when the main microprocessor module fails, and continue to process and analyze the data collected by the digital relay protection module. The programmable logic module has a remote programming interface and a wireless communication module. The remote programming interface is connected to an external terminal device through the wireless communication module. The input / output module is equipped with a signal filtering unit, which is connected in series in the line of the input / output module that receives external photoelectric input signals. The signal filtering unit is used to filter the input photoelectric signals and remove noise and interference components from the signals.

[0020] This design uses the rotating lead screw 15 to drive the swing of the drive rod 13, which in turn pulls the synchronous opening and closing motion of the drive plate 12. This allows the connecting frame 11 and the transmission arm 10 to drive the movement of the connecting rod 9 and the hinge rod 8, thereby enabling the positioning clamp 7 to open and close synchronously. This clamping and protection of the generator 2 ensures that the clamping force is evenly applied to the generator 2, avoiding equipment damage caused by excessive local force. It also effectively limits the displacement of the generator 2 within the protective box 1, preventing the generator 2 from shaking and colliding with the protective box 1, thus ensuring the stability of equipment operation. Furthermore, because the support platform is far from the ground, it prevents the generator 2 from colliding with the protective box 1 during operation. When generating electricity, it comes into contact with the ground, avoiding electrical interference from generator 2, thus improving overall safety and reducing potential safety hazards. Through a digital relay protection module with microprocessor logic at its core, it precisely meets the core requirements of power plant safety operation and contractual documents regarding reliability, selectivity, sensitivity, and speed. In actual operation, it can accurately distinguish between faults and normal operating states, effectively avoiding false trips and failures to trip, reducing the risk of fault escalation from the source. Simultaneously, the collaborative cooperation between the microprocessor module and the programmable logic module achieves efficient integration of data processing and logic control, flexibly adapting to the protection needs of different operating scenarios and enhancing system adaptability. The photoelectric input design of the input / output module improves the anti-interference capability of external signal reception.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A generator protection device, characterized in that, include: A protective box (1) is provided with a generator (2) inserted inside. A support platform (3) is installed in the inner cavity of the protective box (1) at the position below the generator (2). An assembly platform (4) is fitted on the outside of the support platform (3). Assembly base (5) is installed on both sides of the top of the assembly table (4). Insertion shaft (6) is inserted inside the assembly base (5). Positioning clamp (7) is connected to the end of the insertion shaft (6) facing the generator (2). Hinges (8) are hinged to the top of the assembly table (4) and the side of the positioning clamp (7). A connecting rod (9) is movably connected to the upper surface of a hinge rod (8). A transmission arm (10) is hinged to the lower surface of the connecting rod (9). A connecting frame (11) is installed on the outer side of the transmission arm (10). A drive plate (12) is installed on the lower side of the connecting frame (11). The drive rod (13) is hinged to the bottom of the drive plate (12). The outer end of the drive rod (13) is fitted with a corner bracket (14). The outer side of the corner bracket (14) is connected to a lead screw (15) through a bearing.

2. The generator protection device according to claim 1, characterized in that: The length of the insert shaft (6) is greater than that of the mounting base (5), the length of the positioning clamp (7) is greater than that of the generator (2), and the top of the positioning clamp (7) is connected to a pressure plate (18).

3. The generator protection device according to claim 1, characterized in that: The bottom center of the assembly table (4) is connected to a guide rail (16), and the drive plate (12) has a groove (17) at the position corresponding to the guide rail (16), and the guide rail (16) is inserted into the groove (17).

4. A generator protection device according to claim 1, characterized in that: The protective box (1) is provided with a heat dissipation mesh on its side. A screw sleeve (20) is installed on the outside of the protective box (1) at a position corresponding to the lead screw (15). The outer end of the lead screw (15) passes through the interior of the protective box (1) and the screw sleeve (20).

5. A generator protection device according to claim 1, characterized in that: The outer end of the lead screw (15) is coaxially connected to a handwheel (19), and the top side of the protective box (1) is hinged with a box cover. A handle is installed on the outside of the box cover, and an anti-slip sleeve is fitted on the outside of the handle.

6. A generator protection device according to claim 1, characterized in that: The upper surface of the support platform (3) is covered with an elastic buffer layer, which is made of rubber material and has anti-slip protrusions on its surface.

7. A generator protection device according to claim 2, characterized in that: The number of pressure plates (18) is 3-6 sets. The pressure plates (18) and the positioning clamps (7) are covered with antistatic film on the side facing the generator (2). The bottom sides of the protective box (1) are equipped with counterweight blocks.

8. A generator protection system, based on the generator protection device according to any one of claims 1-7, characterized in that, include: The digital relay protection module, microprocessor module, programmable logic module and input / output module are integrated inside the generator (2). The digital relay protection module is constructed using microprocessor logic. The digital relay protection module is used to meet the requirements of power plant safety operation and contract documents for reliability, selectivity, sensitivity and speed. The digital relay protection module, microprocessor module, programmable logic module and input / output module are all integrated inside the generator (2). The microprocessor module is used to process and analyze the data collected by the digital relay protection module. The programmable logic module is connected to the microprocessor module. The input / output module is connected to the digital relay protection module, the microprocessor module, and the programmable logic module respectively through signal lines. The input / output module is used to receive external photoelectric input signals and transmit them to the microprocessor module and programmable logic module for processing. At the same time, the control signals output by the microprocessor module and programmable logic module are transmitted to the output relay to drive the corresponding equipment to operate, and the system operating status and fault information are displayed intuitively by LED lights.

9. A generator protection system according to claim 8, characterized in that: The digital relay protection module is equipped with an adaptive adjustment unit, which is connected to the microprocessor module via an internal high-speed communication line. The adaptive adjustment unit is used to monitor the generator's operating parameters in real time. The microprocessor module is equipped with a redundant backup unit, which is connected to the microprocessor module via a data synchronization line. The redundant backup unit is used to seamlessly switch to backup mode when the main microprocessor module fails, and continue to process and analyze the data collected by the digital relay protection module.

10. A generator protection system according to claim 8, characterized in that: The programmable logic module is equipped with a remote programming interface and a wireless communication module. The remote programming interface is connected to an external terminal device through the wireless communication module. The input / output module is equipped with a signal filtering unit, which is connected in series in the line of the input / output module that receives external photoelectric input signals. The signal filtering unit is used to filter the input photoelectric signals to remove noise and interference components from the signals.

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