A compact self-locking ring main unit

Abstract

This utility model discloses a compact self-locking ring main unit, including a cabinet body, a cabinet door, a component mounting rack, a self-locking fastening assembly, and a control and monitoring system. The cabinet door is hinged to the cabinet body and has a sealing strip on the inside. The component mounting rack is located inside the cabinet body and has a mounting cavity. The self-locking fastening assembly includes a wedge-shaped latch, a spring plate, etc., which can be engaged with the wedge-shaped groove of the mounting rack to achieve self-locking. An unlocking rod is also provided for easy operation. The mounting rack is secured to the cabinet body with screws. The control and monitoring system can collect and analyze operating parameters. This device saves space through its compact layout, the self-locking assembly and auxiliary locking ensure the stability of the mounting rack, the sealing strip enhances protection, and the monitoring system ensures operational safety. It is suitable for space-constrained scenarios and has strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a compact self-locking ring main unit. Background Technology

[0002] Ring main units, as key equipment in power distribution networks, are widely used in residential communities, industrial parks and other places.

[0003] Existing ring main units (RMS) suffer from the following problems: The component layout of traditional RMS units is not compact or reasonable enough. The internal space utilization is inefficient, with components scattered throughout, resulting in a large overall size. In space-constrained locations, such as the distribution rooms of old residential areas or narrow corners of industrial plants, installation is difficult, limiting their application scenarios. Furthermore, existing RMS units often use ordinary screws to connect and secure the component mounting brackets to the cabinet. This method not only requires multiple people to install, but also makes them prone to loosening during long-term use due to vibration (e.g., the operation of large machinery nearby) and temperature changes (e.g., high temperatures in summer, low temperatures in winter). Once loosened, the component mounting brackets may shift, affecting the stability of internal circuit connections and potentially leading to electrical faults, reducing the reliability and safety of the equipment.

[0004] Therefore, a compact, self-locking ring main unit needs to be designed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a compact self-locking ring main unit to solve the problems of large space occupation, low fastening reliability, poor sealing performance, and incomplete operation monitoring in existing ring main units. By optimizing the internal structure of the cabinet, innovating the design of the self-locking fastening components, improving the sealing structure, and perfecting the monitoring system, the ring main unit achieves a compact layout, reliable fastening, good sealing, and intelligent operation monitoring, thereby improving the practicality, safety, and reliability of the equipment and reducing maintenance costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A compact self-locking ring main unit includes a cabinet body, a cabinet door, a component mounting rack, a self-locking fastening assembly, and a control and monitoring system.

[0007] Furthermore, the cabinet door and cabinet body are hinged together, and a sealing strip is provided on the inside of the cabinet door. This sealing strip is made of EPDM rubber and has a hollow cross-section, which can effectively improve the sealing performance of the ring main unit.

[0008] Furthermore, the component mounting bracket is located inside the cabinet, and its interior has a component mounting cavity for mounting components; the outer side of the component mounting bracket also has a connection hole, and the corresponding position of the cabinet has a fastening hole. The component mounting bracket and the cabinet are locked together by auxiliary screws passing through the connection hole and the fastening hole.

[0009] Furthermore, a self-locking fastening assembly is disposed between the cabinet and the component mounting bracket, including a wedge-shaped latch, a spring plate, and a spring. The latch is connected to the spring plate, and the spring plate is connected to the inside of the cabinet via the spring. The latch can engage with the wedge-shaped groove on the outside of the shorter side of the component mounting bracket under the action of the spring plate to achieve self-locking. The self-locking fastening assembly also includes an unlocking rod, which passes through the cabinet and is connected to the spring plate and the latch, and is used to manually control the latch to disengage from the wedge-shaped groove.

[0010] Furthermore, the control and monitoring system is installed on the cabinet, including current sensors, voltage sensors, and a control unit. The current sensors and voltage sensors are used to collect the operating parameters of the ring main unit, and the control unit is used to process and analyze the collected data and control the operation of the ring main unit.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model, through the design of a compact self-locking ring main unit, achieves the following effects: 1. By setting component mounting racks inside the cabinet and rationally planning the component mounting cavities, a compact layout of components is achieved. Compared with traditional ring main units, this effectively reduces the waste of internal space, making the overall size of the ring main unit more compact and adaptable to various narrow space installation needs, greatly expanding its application range, such as convenient installation in urban underground substations with limited space; 2. The self-locking fastening component utilizes the cooperation between the wedge-shaped latch and the wedge-shaped groove on the component mounting rack, as well as the elastic force of the spring sheet and spring, to achieve self-locking fastening between the component mounting rack and the cabinet. Compared with traditional screw connections, this fastening method has stronger resistance to vibration and temperature changes, effectively preventing loosening caused by external factors, ensuring the stability of the component mounting rack, guaranteeing stable internal circuit connections, and improving the reliability and safety of equipment operation; 3. The inner side of the cabinet door uses a sealing strip made of EPDM rubber with a hollow cross-section. This sealing strip fits tightly against the cabinet and door, effectively preventing dust and moisture from entering the cabinet. Even in harsh outdoor environments or humid locations, it provides excellent protection for internal components, preventing equipment malfunctions caused by dust accumulation and moisture intrusion, and extending the equipment's lifespan. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2This is a three-dimensional structural schematic diagram of the component mounting bracket of this utility model; Figure 3 This is a schematic diagram of the main structure of this utility model.

[0013] In the diagram: 1. Cabinet body; 2. Cabinet door; 21. Sealing strip; 3. Component mounting bracket; 31. Component mounting cavity; 32. Connection hole; 4. Self-locking fastening assembly; 41. Tongue; 42. Spring plate; 43. Spring; 44. Unlocking rod; 45. Wedge groove; 5. Control and monitoring system; 6. Fastening hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0015] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete. Example

[0016] Please see Figure 1 This embodiment provides a compact self-locking ring main unit, including a cabinet body 1, a cabinet door 2, a component mounting rack 3, a self-locking fastening assembly 4, and a control and monitoring system 5; Cabinet door 2 is hinged to cabinet body 1. A sealing strip 21 is provided on the inside of cabinet door 2 to enhance the seal when the cabinet door 2 and cabinet body 1 are closed. Component mounting rack 3 is located inside cabinet body 1 to install various components, ensuring an orderly arrangement of components. A self-locking fastening assembly 4 is located between cabinet body 1 and component mounting rack 3, enabling self-locking and fastening between the component mounting rack 3 and cabinet body 1, ensuring the stability of component mounting rack 3 within cabinet body 1. A control and monitoring system 5 is located on cabinet body 1, which can monitor and control the operating status of the ring main unit, allowing for timely understanding of equipment operation. Example

[0017] Please see Figure 2 and Figure 3Based on Embodiment 1, this embodiment provides a detailed description of the structure and operation of the self-locking fastening assembly 4. The self-locking fastening assembly 4 includes a wedge-shaped latch 41, a spring plate 42, and a spring 43. The latch 41 is connected to the spring plate 42, and the spring plate 42 is connected to the inside of the cabinet 1 via the spring 43. When the component mounting bracket 3 is installed, under the elastic force of the spring plate 42, the latch 41 can engage with the wedge-shaped groove 45 on the outer side of the shorter side of the component mounting bracket 3. The self-locking is achieved by utilizing the characteristics of the wedge structure, which firmly fixes the component mounting bracket 3 inside the cabinet 1, effectively preventing the component mounting bracket 3 from shifting. Example

[0018] Please see Figure 3 Based on Embodiment 2, this embodiment provides a supplementary description of the unlocking structure of the self-locking fastening assembly 4. The self-locking fastening assembly 4 also includes an unlocking rod 44, which passes through the cabinet 1 and the spring 43 and connects to the spring plate 42 and the latch 41. When it is necessary to disassemble or adjust the component mounting bracket 3, the unlocking rod 44 can be manually operated to move the spring plate 42 and the latch 41, causing the latch 41 to disengage from the wedge groove 45 and release the self-locking state. This operation is convenient and facilitates the maintenance of the component mounting bracket 3. Example

[0019] Please see Figure 2 Based on Example 1, this example describes the structure of the component mounting rack 3 in detail. The component mounting rack 3 has a component mounting cavity 31 inside. The size and shape of the component mounting cavity 31 can be designed according to the specifications of different components. It is specifically used to install components, making the installation of components more orderly, saving the internal space of the cabinet 1, and achieving a compact layout. Example

[0020] Please see Figure 1 and Figure 2 Based on Example 1, this example describes the auxiliary fixing method between the component mounting bracket 3 and the cabinet 1. The component mounting bracket 3 has a connecting hole 32 on its outer side, and the corresponding position of the cabinet 1 has a fastening hole 6. Based on the self-locking function of the self-locking fastening component 4, auxiliary screws are used to pass through the connecting hole 32 and the fastening hole 6 to further tighten the component mounting bracket 3 and the cabinet 1, thereby enhancing the connection's firmness and improving the overall stability of the equipment. Example

[0021] Please see Figure 1Based on Example 1, this example describes the material and structural characteristics of the sealing strip 21. The sealing strip 21 is made of EPDM rubber, which has good aging resistance, weather resistance, and elasticity. Simultaneously, the sealing strip 21 has a hollow cross-section. When the cabinet door 2 is closed, the sealing strip 21 is compressed and deformed, tightly filling the gap between the cabinet door 2 and the cabinet body 1. This effectively prevents dust, moisture, and other contaminants from entering the cabinet body 1, significantly improving the sealing performance of the ring main unit and protecting internal components from damage. Example

[0022] Please see Figure 1 Based on Example 1, this example elaborates on the composition and function of the control and monitoring system 5. The control and monitoring system 5 includes a current sensor, a voltage sensor, and a control unit. The current and voltage sensors can collect key parameters such as current and voltage during the operation of the ring main unit in real time and transmit the collected data to the control unit. The control unit processes and analyzes this data; if abnormal parameters are detected, it can promptly issue warnings or take corresponding control measures to ensure the safe and stable operation of the ring main unit and facilitate maintenance management by operation and maintenance personnel.

[0023] The working process of this utility model is as follows: When using this compact self-locking ring main unit, firstly, the component mounting bracket 3 is placed inside the cabinet 1. The latch 41 of the self-locking fastening component 4 is engaged with the wedge groove 45 of the component mounting bracket 3 under the action of the spring plate 42, achieving initial self-locking. Then, the auxiliary screw is passed through the connecting hole 32 and the fastening hole 6 to complete the auxiliary locking between the component mounting bracket 3 and the cabinet 1, ensuring the stability of the mounting bracket. Various components are then installed into the component mounting cavity 31 of the component mounting bracket 3. The limiting effect of the mounting cavity ensures that the components are arranged compactly and orderly. The cabinet door 2 is closed, and the cabinet door 2 is fitted to the cabinet 1 through the hinge. The sealing strip 21 on the inner side is deformed by compression, filling the gaps to achieve sealing and improving the internal protection performance of the cabinet 1. Finally, the control and monitoring system 5 is started. The current sensor and voltage sensor collect the operating parameters of the ring main unit in real time, and the data is transmitted to the control unit for analysis and processing to monitor the operating status of the equipment in real time. When it is necessary to disassemble or adjust the component mounting bracket 3, operate the unlocking lever 44 so that it passes through the cabinet 1 and the spring 43, causing the spring plate 42 and the latch 41 to move. The latch 41 disengages from the wedge groove 45 and releases the self-locking. Unscrew the auxiliary screws to remove the component mounting bracket 3 for maintenance. After completion, re-fix it according to the installation steps.

[0024] 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 compact self-locking ring main unit, characterized in that: The system includes a cabinet (1), a cabinet door (2), a component mounting rack (3), a self-locking fastening assembly (4), and a control and monitoring system (5). The cabinet door (2) is hinged to the cabinet (1). A sealing strip (21) is provided on the inner side of the cabinet door (2). The component mounting rack (3) is located inside the cabinet (1) and is used to install components. The self-locking fastening assembly (4) is located between the cabinet (1) and the component mounting rack (3) and is used to achieve self-locking fastening between the component mounting rack (3) and the cabinet (1). The control and monitoring system (5) is located on the cabinet (1) and is used to monitor and control the operation of the ring network cabinet.

2. A compact self-locked ring main unit according to claim 1, characterized in that: The self-locking fastening assembly (4) includes a wedge-shaped latch (41), a spring plate (42), and a spring (43). The latch (41) is connected to the spring plate (42), and the spring plate (42) is connected to the inside of the cabinet (1) through the spring (43). The latch (41) can be engaged in the wedge-shaped groove (45) on the outside of the shorter side of the component mounting bracket (3) under the action of the spring plate (42) to achieve self-locking.

3. A compact self-locked ring main unit according to claim 2, characterized in that: The self-locking fastening assembly (4) also includes an unlocking rod (44), which passes through the cabinet (1) and the spring (43) and is connected to the spring plate (42) and the latch (41) for manually controlling the latch (41) to disengage from the wedge groove (45).

4. A compact self-locked ring main unit according to claim 1, characterized in that: The component mounting bracket (3) has a component mounting cavity (31) inside, which is used to mount components.

5. A compact self-locked ring main unit according to claim 1, characterized in that: The component mounting bracket (3) is provided with a connection hole (32) on the outside, and the cabinet (1) is provided with a fastening hole (6) at the corresponding position. The component mounting bracket (3) and the cabinet (1) are locked together by an auxiliary screw passing through the connection hole (32) and the fastening hole (6).

6. A compact self-locking ring main unit according to claim 1, characterized in that: The sealing strip (21) is made of EPDM rubber and has a hollow cross-section, which can effectively improve the sealing performance of the ring main unit.

7. A compact self-locking ring main unit according to claim 1, characterized in that: The control and monitoring system (5) includes a current sensor, a voltage sensor and a control unit. The current sensor and voltage sensor are used to collect the operating parameters of the ring main unit, and the control unit is used to process and analyze the collected data and control the operation of the ring main unit.

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