A box-type substation high-voltage cabinet and a box-type substation

Abstract

This invention relates to the field of power distribution substations, specifically to a prefabricated substation high-voltage switchgear and a prefabricated substation. The prefabricated substation high-voltage switchgear and prefabricated substation address the problems of cumbersome and complex circuit breaker installation procedures in existing systems. The prefabricated substation includes a main mounting frame and a front sealing plate connected to the front of the main mounting frame. The circuit breaker is installed within the main mounting frame. The main mounting frame and the front sealing plate are installed within the substation enclosure and are detachably connected to the enclosure. This simplifies the structure of the prefabricated substation high-voltage switchgear and optimizes the circuit breaker installation method. The circuit breaker can be installed on the main mounting frame first, and then the main mounting frame is installed in the enclosure, facilitating circuit breaker installation. Furthermore, no installation space needs to be reserved within the enclosure when installing the circuit breaker, thus optimizing the internal structure of the enclosure.

Description

Technical Field

[0001] This invention relates to the field of power distribution substations, specifically to a prefabricated substation high-voltage switchgear and a prefabricated substation. Background Technology

[0002] A prefabricated substation, also known as a prefabricated transformer substation, is a factory-prefabricated, compact indoor or outdoor power distribution device arranged in a specific wiring scheme. The Hua-type substation is a type of prefabricated substation, characterized by its small size, compact structure, safe and reliable operation, convenient maintenance, and portability.

[0003] Chinese utility model patent CN216929368U discloses a new energy photovoltaic substation. This substation includes a housing, with corresponding positions within the housing for circuit breakers. The circuit breakers are installed in the housing according to the positions of the cabinets. While this structure is relatively robust, the circuit breakers can only be installed after the housing is fully formed, resulting in a delay in the installation process. If a five-in-one circuit breaker is used, its large size and weight make installation difficult. Therefore, to meet installation requirements, the housing volume is often increased. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated substation high-voltage switchgear to solve the problems of delayed and complex installation procedures for circuit breakers in existing technologies. Another purpose of this invention is to provide a prefabricated substation to address the problems of existing technologies where circuit breakers can only be installed after the enclosure is fully formed, resulting in complex and delayed installation, and often increasing the size of the enclosure to meet installation requirements.

[0005] To solve the above-mentioned technical problems, the present invention provides a prefabricated substation high-voltage switchgear with the following technical solution: The prefabricated substation high-voltage switchgear includes a main mounting frame and a front sealing plate connected to the front of the main mounting frame. A circuit breaker is installed inside the main mounting frame. The main mounting frame and the front sealing plate are used for installation inside the substation enclosure and are detachably connected to the substation enclosure.

[0006] Furthermore, the main mounting frame includes a cuboid frame and a circuit breaker mounting bracket. The circuit breaker mounting bracket includes front and rear columns spaced apart and a crossbeam connected between the front and rear columns. The bottom and top of the circuit breaker mounting bracket are respectively connected to the bottom and top of the substation enclosure.

[0007] Furthermore, the circuit breaker is installed on the circuit breaker mounting bracket and has a left side and a right side on the left and right sides of the crossbeam. The lower ends of the front and rear columns are connected to bottom beams that extend toward the heavier load side of the left and right sides. The circuit breaker mounting bracket is connected to the bottom of the substation box through the bottom beams.

[0008] Furthermore, the crossbeam includes a top crossbeam located at the top of the front and rear columns, and the circuit breaker mounting bracket is connected to the top of the substation box through the top crossbeam.

[0009] Furthermore, the top, bottom, rear, and left and right sides of the main mounting frame are all open. The front sealing plate of the main mounting frame includes side sealing plates on the left and right sides of the main mounting frame and a top sealing plate on the upper side of the main mounting frame. The front sealing plate is used to connect with the substation enclosure, and a cabinet door is installed in the space enclosed by the front sealing plate.

[0010] This invention proposes a novel technical solution: a main mounting frame that is detachably connected to the substation enclosure. This main mounting frame constitutes the cabinet structure of the high-voltage switchgear, and the circuit breaker is mounted on the main mounting frame. This simplifies the structure of the prefabricated substation high-voltage switchgear while optimizing the circuit breaker installation method. The circuit breaker can be installed on the main mounting frame first, and then the main mounting frame is installed in the enclosure, making assembly convenient. Furthermore, no installation space needs to be reserved inside the enclosure when installing the circuit breaker, thus optimizing the internal structure of the enclosure.

[0011] To solve the above-mentioned technical problems, the present invention provides a prefabricated substation with the following technical solution: The prefabricated substation includes a box, and a high-voltage cabinet is installed inside the box. The high-voltage cabinet includes a main mounting frame and a front sealing plate connected to the front of the main mounting frame. A circuit breaker is installed inside the main mounting frame. The main mounting frame and the front sealing plate are used to install inside the substation box and are detachably connected to the substation box.

[0012] Furthermore, the main mounting frame includes a cuboid frame and a circuit breaker mounting bracket. The circuit breaker mounting bracket includes front and rear columns spaced apart and a crossbeam connected between the front and rear columns. The bottom and top of the circuit breaker mounting bracket are respectively connected to the bottom and top of the substation enclosure.

[0013] Furthermore, the circuit breaker is installed on the circuit breaker mounting bracket and has a left side and a right side on the left and right sides of the crossbeam. The lower ends of the front and rear columns are connected to bottom beams that extend toward the heavier load side of the left and right sides. The circuit breaker mounting bracket is connected to the bottom of the substation box through the bottom beams.

[0014] Furthermore, the crossbeam includes a top crossbeam located at the top of the front and rear columns, and the circuit breaker mounting bracket is connected to the top of the substation box through the top crossbeam.

[0015] Furthermore, the top, bottom, rear, and left and right sides of the main mounting frame are all open. The front sealing plate of the main mounting frame includes side sealing plates on the left and right sides of the main mounting frame and a top sealing plate on the upper side of the main mounting frame. The front sealing plate is used to connect with the substation enclosure, and a cabinet door is installed in the space enclosed by the front sealing plate.

[0016] This invention proposes a novel technical solution: a main mounting frame that is detachably connected to the substation enclosure. This main mounting frame constitutes the cabinet structure of the high-voltage switchgear, and the circuit breaker is mounted on the main mounting frame. This simplifies the structure of the prefabricated substation high-voltage switchgear while optimizing the circuit breaker installation method. The circuit breaker can be installed on the main mounting frame first, and then the main mounting frame is installed in the enclosure, making assembly convenient. Furthermore, no installation space needs to be reserved inside the enclosure when installing the circuit breaker, thus optimizing the internal structure of the enclosure. Attached Figure Description

[0017] Figure 1 This is a front view of a prefabricated substation high-voltage switchgear according to the present invention; Figure 2 for Figure 1 The right view; Figure 3 for Figure 1 Top view; Figure 4 for Figure 1 Rear view.

[0018] In the diagram: 1. Front column; 2. Upper partition; 3. Partition reinforcing rib; 4. Insulator mounting beam; 5. Circuit breaker mounting reinforcement box; 6. Circuit breaker mounting bracket; 7. Side sealing plate; 8. Upper sealing plate; 9. Left cabinet door; 10. Right cabinet door; 11. C-profile; 12. Reinforcing diagonal brace; 13. Rear column; 14. Crossbeam; 15. Bottom beam; 16. Five-in-one circuit breaker; 17. Rectangular frame. Detailed Implementation

[0019] This invention proposes a novel technical solution to address the problems existing in the aforementioned technical solutions. The core concept of this invention is to set up a main mounting frame that is detachably connected to the substation enclosure. This main mounting frame constitutes the cabinet structure of the high-voltage switchgear, and the circuit breaker is mounted on the main mounting frame. In this way, the structure of the prefabricated substation high-voltage switchgear is simplified, while the installation method of the circuit breaker is optimized. The circuit breaker can be installed on the main mounting frame first, and then the main mounting frame is installed in the enclosure, making assembly convenient. Furthermore, no installation space needs to be reserved inside the enclosure when installing the circuit breaker, thus optimizing the internal structure of the enclosure.

[0020] In view of the above-mentioned inventive concept, the present invention provides a prefabricated substation high-voltage switchgear including a main mounting frame and a front sealing plate connected to the front side of the main mounting frame. A circuit breaker is installed inside the main mounting frame. In this embodiment, the circuit breaker is as follows: Figure 3 The five-in-one circuit breaker 16 shown is a circuit breaker that integrates the functions of a circuit breaker, load switch, fuse, contactor, and bypass resistor. Therefore, after installing the five-in-one circuit breaker 16, the main mounting frame can be directly installed in the substation enclosure. In another embodiment, the circuit breaker can also be a three-in-one circuit breaker or other types of circuit breakers. In this case, a mounting structure for installing the load switch, fuse, contactor, and bypass resistor needs to be provided on the main mounting frame. The main mounting frame and front cover are used for installation inside the substation enclosure and are detachably connected to the enclosure. This improves the flexibility of connecting the main mounting frame to the box-type substation enclosure. This invention simplifies the structure of the high-voltage cabinet in a prefabricated substation. When installing the five-in-one circuit breaker 16, the five-in-one circuit breaker 16 can be installed on the main mounting frame first, and then the main mounting frame can be installed in the box. This optimizes the installation method of the circuit breaker, making it easier to assemble. Furthermore, no installation space needs to be reserved in the box when installing the circuit breaker, which also optimizes the internal structure of the box.

[0021] In this embodiment, the main mounting frame includes a cuboid frame 17 and a circuit breaker mounting bracket. The cuboid frame 17 is constructed of C-shaped profiles and forms the main frame of the high-voltage switchgear in the box-type substation. The circuit breaker mounting bracket includes a front column 1 and a rear column 13 spaced apart. The front column 1 and the rear column 13 are bolted to the C-shaped profiles on the sides of the main frame. The circuit breaker mounting bracket also includes a crossbeam connecting the front and rear columns. The crossbeam includes a circuit breaker mounting crossbeam located in the middle of the front and rear columns. A circuit breaker mounting bracket 6 for mounting a five-in-one circuit breaker 16 is provided on the circuit breaker mounting bracket 6. A circuit breaker reinforcing box 5 is provided on the circuit breaker mounting bracket 6 to ensure the stability of the installation of the five-in-one circuit breaker 16. The circuit breaker mounting bracket in this embodiment is a planar mounting bracket. In another embodiment, the circuit breaker mounting bracket can also be a three-dimensional frame mounting bracket. In this embodiment, the circuit breaker is mounted in the cuboid frame 17 via the circuit breaker mounting bracket. In another embodiment, the circuit breaker can also be directly mounted on a rectangular frame. In this case, a circuit breaker mounting beam and a circuit breaker mounting bracket 6 for mounting the five-in-one circuit breaker 16 need to be provided on the rectangular frame. The beam also includes, for example, Figure 2The diagram shows the insulator mounting beam 4 and the upper partition 2, which are used to install insulators. The upper partition 2 also has reinforcing ribs 3. The bottom and top of the circuit breaker mounting bracket are connected to the bottom and top of the substation enclosure, respectively. This ensures the reliability of the connection between the circuit breaker mounting bracket and the substation enclosure, and also evenly distributes the load of the circuit breaker mounting bracket on the bottom and top of the substation enclosure, improving the overall structural stability of the prefabricated substation during operation. Alternatively, it is readily apparent that the side of the circuit breaker mounting bracket can be connected to the side of the substation enclosure, provided that the connection between the circuit breaker mounting bracket and the enclosure is reliable.

[0022] In this embodiment, the circuit breaker is mounted on a circuit breaker mounting bracket and has a left and right side portion located on the left and right sides of the crossbeam. The lower ends of both the front and rear columns are connected to a bottom beam 15 extending towards the heavier load side of the left and right sides. When the five-in-one circuit breaker 16 is mounted on the circuit breaker mounting bracket, the load on the left and right sides of the bracket is uneven. In this embodiment, the bottom beam 15 is located on the heavier load side of the circuit breaker mounting bracket to prevent the bracket from tipping over due to uneven load on the left and right sides. A [structure / mechanism] is provided between the column on the heavier load side and its corresponding bottom beam 14. Figure 4 The reinforcing diagonal brace 12 shown forms a stable triangle with the column and the base beam 15, ensuring the stability of the circuit breaker mounting bracket and preventing damage to the bracket structure due to uneven loads on both sides. The circuit breaker mounting bracket is connected to the bottom of the substation enclosure via the base beam 15. The base beam 15 not only improves the stability of the circuit breaker mounting bracket but also increases the contact area between the bracket and the substation enclosure, allowing for a more even load distribution. In another embodiment, a connecting flange can be installed at the bottom of the column and connected to the substation enclosure via bolts. In this embodiment, the base beam 15 is detachably connected to the substation enclosure via bolts. The base beam 15 has evenly distributed connecting holes along its length, ensuring that the load of the circuit breaker mounting bracket is evenly distributed on the enclosure after installation, thus improving the overall structural stability of the prefabricated substation during operation.

[0023] In this embodiment, the crossbeam includes, for example: Figure 3 The top crossbeam 14 shown is located at the top of the front and rear columns. The circuit breaker mounting bracket is connected to the top of the substation enclosure via the top crossbeam 14. This increases the connection area between the circuit breaker mounting bracket and the substation enclosure, preventing damage to the prefabricated substation caused by concentrated load in one place. The top crossbeam 15 is also connected to the substation enclosure via bolts, and the connecting holes on the top crossbeam 15 for the bolts to pass through are evenly distributed along the length of the top crossbeam 14. Alternatively, in another embodiment, a connecting flange can be provided at the top of the column and connected to the substation enclosure via bolts, provided that the reliability of the connection is ensured.

[0024] In this embodiment, the top, bottom, rear, and left and right sides of the main mounting frame are all open, and the front sealing plate of the main mounting frame includes, for example, the following. Figure 1 The side sealing plates 7 located on the left and right sides of the main mounting frame and the top sealing plate 8 located on the upper side of the main mounting frame are shown. The front sealing plate is used to connect with the substation enclosure, and the cabinet door is installed within the space enclosed by the front sealing plate. The cabinet door includes, for example, the side sealing plates 7 on the left and right sides of the main mounting frame and the top sealing plate 8 on the upper side of the main mounting frame. Figure 1 The left cabinet door 9 and the right cabinet door 10 are shown, and the position of the rear cabinet door of the box-type substation high voltage cabinet installed in the substation box corresponds to the position of the box door on the substation box.

[0025] Another aspect of the present invention provides a prefabricated substation, the prefabricated substation comprising a box housing and a high-voltage switchgear disposed within the box housing, the embodiment of which is the same as the embodiment of the high-voltage switchgear of the prefabricated substation described above, and therefore will not be repeated here.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A prefabricated substation high-voltage switchgear, characterized in that: The system includes a main mounting frame and a front sealing plate connected to the front of the main mounting frame. A circuit breaker is pre-installed inside the main mounting frame. The main mounting frame, circuit breaker, and front sealing plate together form the cabinet structure of the high-voltage switchgear. The cabinet structure of the high-voltage switchgear is installed inside the substation enclosure and is detachably connected to the substation enclosure. The main mounting frame includes a cuboid frame and a circuit breaker mounting bracket. The bottom and top of the circuit breaker mounting bracket are connected to the bottom and top of the substation enclosure, respectively. The top, bottom, rear, and left and right sides of the main mounting frame are all open. The front sealing plate is used to connect to the substation enclosure, and a cabinet door is installed in the space enclosed by the front sealing plate.

2. The prefabricated substation high-voltage switchgear according to claim 1, characterized in that: The circuit breaker mounting bracket includes front and rear columns spaced apart, and a crossbeam connecting the front and rear columns.

3. The prefabricated substation high-voltage switchgear according to claim 2, characterized in that: The circuit breaker is mounted on a circuit breaker mounting bracket and has a left and right side portion located on the left and right sides of the crossbeam. The lower ends of the front and rear columns are connected to a bottom beam extending towards the heavier load side of the left and right side portions. The circuit breaker mounting bracket is connected to the bottom of the substation box through the bottom beam.

4. The prefabricated substation high-voltage switchgear according to claim 2, characterized in that: The crossbeam includes a top crossbeam located at the top of the front and rear columns, and the circuit breaker mounting bracket is connected to the top of the substation box through the top crossbeam.

5. The prefabricated substation high-voltage switchgear according to any one of claims 1-4, characterized in that: The front sealing plate of the main mounting frame includes side sealing plates on the left and right sides of the main mounting frame and a top sealing plate on the upper side of the main mounting frame.

6. A prefabricated substation, characterized in that: The system includes a cabinet containing a high-voltage switchgear. The high-voltage switchgear includes a main mounting frame and a front sealing plate connected to the front of the main mounting frame. A circuit breaker is pre-installed in the main mounting frame. The main mounting frame, circuit breaker, and front sealing plate together form the cabinet structure of the high-voltage switchgear. The cabinet structure of the high-voltage switchgear is installed in the substation enclosure and is detachably connected to the substation enclosure. The main mounting frame includes a cuboid frame and a circuit breaker mounting bracket. The bottom and top of the circuit breaker mounting bracket are connected to the bottom and top of the substation enclosure, respectively. The top, bottom, rear, and left and right sides of the main mounting frame are open. The front sealing plate is used to connect to the substation enclosure, and a cabinet door is installed within the space enclosed by the front sealing plate.

7. The prefabricated substation according to claim 6, characterized in that: The circuit breaker mounting bracket includes front and rear columns spaced apart, and a crossbeam connecting the front and rear columns.

8. The prefabricated substation according to claim 7, characterized in that: The circuit breaker is mounted on a circuit breaker mounting bracket and has a left and right side portion located on the left and right sides of the crossbeam. The lower ends of the front and rear columns are connected to a bottom beam extending towards the heavier load side of the left and right side portions. The circuit breaker mounting bracket is connected to the bottom of the substation box through the bottom beam.

9. The prefabricated substation according to claim 7, characterized in that: The crossbeam includes a top crossbeam located at the top of the front and rear columns, and the circuit breaker mounting bracket is connected to the top of the substation box through the top crossbeam.

10. The prefabricated substation according to any one of claims 6-9, characterized in that: The front sealing plate of the main mounting frame includes side sealing plates on the left and right sides of the main mounting frame and a top sealing plate on the upper side of the main mounting frame.

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