Prefabricated cabin type secondary combination equipment rack arrangement structure and operation and maintenance method

Abstract

The invention discloses a prefabricated cabin type secondary combination equipment rack arrangement structure and an operation and maintenance method.The prefabricated cabin type secondary combination equipment rack arrangement structure comprises a cuboid cabin body, and a row of racks which are located above a floor and are of an integrated structure with the cabin body are fixed to the long-edge cabin walls of the two sides in the cabin body respectively; the side, close to the interior of the cabin body, of each rack is of an open structure, heat dissipation equipment, an air switch, secondary combination equipment and inter-rack cables are sequentially fixed to the racks from top to bottom, the space between the two rows of racks serves as an operation and maintenance channel, the racks in the same row are connected through the inter-rack cables, and the racks in the same row are connected through the inter-rack cables. The racks in different columns are connected through inter-column cables arranged below the floor, and the racks are connected with external cables of the cabin body through external cables arranged in an interlayer of the floor.

Description

Technical Field

[0001] This invention relates to the field of substation equipment technology, specifically to a prefabricated modular secondary assembly equipment rack layout structure and operation and maintenance method. Background Technology

[0002] In the field of substation construction, prefabricated modular secondary assembly equipment is increasingly widely used due to its advantages such as high integration, short construction period, and small footprint. The rationality of the layout of the cabinets and related equipment within the prefabricated modules directly affects the substation's operation and maintenance convenience, space utilization, and construction and maintenance costs. In long-term practice, the layout of cabinets within prefabricated modules has continuously evolved, mainly going through the development stages of single-module single-row layout based on cabinet structure, single-module double-row layout (with rear door), single-module double-row layout (without rear door), and rack-mounted layout. However, the existing layout still has many technical defects that urgently need to be addressed.

[0003] The single-compartment, single-row layout was an early and relatively basic configuration. It features only one row of control cabinets in each compartment, with each cabinet using a 2260*800*600mm front-to-back door structure. Maintenance and repair access is provided on both the front and rear sides of the cabinet. The advantage of this layout is that it provides independent operating space at both the front and rear of the cabinet, allowing for the direct selection of standard front-to-back door control cabinets and conventional rear wiring devices, which aligns closely with traditional power equipment maintenance practices. However, its core drawbacks are also significant: the single-row arrangement results in extremely low space utilization within the compartment, sparse equipment placement, and requires a larger compartment volume for the same equipment capacity, thus significantly increasing the relative costs of compartment manufacturing, transportation, and installation.

[0004] To improve space utilization, a single-compartment, double-row layout (rear-opening door) has emerged. This layout features two rows of opposing cabinets within the compartment, all with front-to-back opening doors (2260*800*600mm). Operating space is reserved both in front of and behind the cabinets. However, due to the overall width limitations of the prefabricated compartment, the space reserved behind the cabinets often cannot meet the normal operational needs of maintenance personnel. Therefore, maintenance doors must be installed on the corresponding rear positions of the cabinets on the compartment wall to allow maintenance personnel to perform rear-cabinet work from outside the compartment. While this layout maintains the compatibility of standard front-to-back opening cabinets and conventional rear wiring devices, conforming to traditional maintenance practices, its drawbacks are more pronounced: maintenance personnel must perform rear-cabinet operations from outside the compartment, making all-weather maintenance impossible during severe weather conditions such as rain, snow, high temperatures, and extreme cold, severely impacting the timeliness of maintenance. Furthermore, the numerous rear-cabinet maintenance doors compromise the original overall sealing structure of the compartment, reducing its dustproof, waterproof, and condensation-proof performance, increasing the risk of equipment malfunction.

[0005] To address the sealing and all-weather maintenance issues of rear-door layouts, a single-compartment, double-row layout (no rear door) was proposed. This layout also uses two rows of opposing cabinets, but all cabinets are installed against the wall, with a unified work passage only in front of the cabinets. All cabinets use a 2260*800*600mm front-wiring structure, and all equipment inside is equipped with front-wiring devices. Compared to the rear-door layout, this layout eliminates the need for a rear work passage through front-wiring technology, allowing all maintenance work to be completed inside the compartment, effectively meeting all-weather maintenance requirements. Furthermore, the absence of a rear access door ensures the overall sealing performance of the compartment. However, this solution still has significant drawbacks: all maintenance operations are concentrated in front of the cabinets, resulting in relatively cramped work space and limiting the convenience of maintenance personnel; in addition, the front-wiring operation mode differs significantly from the long-standing rear-door work habits of traditional maintenance personnel, increasing personnel training costs and the risk of operational errors.

[0006] In summary, the common problems faced by traditional prefabricated modular substations in application mainly include: First, the available space inside the secondary equipment compartment is small, and the dense arrangement of equipment leads to insufficient maintenance and operation space, which greatly affects maintenance efficiency; Second, the traditional mode of assembling secondary equipment by bay results in scattered equipment arrangement within a single panel, low space utilization, and waste of space within the compartment; Third, the large number of interconnections between panels and the complex wiring relationships, coupled with the lack of standardized cable routing within the compartment, lead to poor stability of construction processes and difficulty in effectively controlling production and construction cycles; Fourth, the retention of independent secondary equipment panels requires separate protection treatment for the compartment and the panels, resulting in redundant protection and increased equipment manufacturing costs; Fifth, in the event of long-term equipment renovation and expansion, the fixed panel layout and wiring methods necessitate large-scale dismantling and modification, leading to long construction cycles, high operational difficulty, and seriously affecting the continuous and stable operation of the substation.

[0007] The aforementioned problems with traditional prefabricated modular unit layouts, such as low space utilization, inconvenient maintenance, complex wiring, and difficulties in modification and expansion, have become key bottlenecks restricting the improvement of substation construction efficiency, reduction of operation and maintenance costs, and assurance of operational reliability. A more optimized layout structure and usage method are urgently needed to solve these problems. Therefore, this invention aims to provide a prefabricated modular unit-type secondary assembly equipment rack layout structure and usage method, specifically addressing the shortcomings of existing technologies, thereby improving the construction efficiency and operation and maintenance quality of substations. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the aforementioned background technology and provide a prefabricated modular secondary assembly equipment rack layout structure and operation and maintenance method that has high space utilization, convenient maintenance, simple wiring, easy modification and expansion, and effectively improves the construction and operation and maintenance efficiency of substations.

[0009] To achieve this objective, the prefabricated cabin-type secondary assembly equipment rack arrangement structure designed in this invention includes a rectangular cabin. A row of racks, integrally formed with the cabin structure, is fixed to the long side walls on both sides of the cabin's interior. The racks are located above the floor. The side of the racks closest to the interior of the cabin is an open structure. From top to bottom, the racks are sequentially fixed with heat dissipation equipment, circuit breakers, secondary assembly equipment, and inter-rack cables. The space between two rows of racks serves as a maintenance passage. Racks in the same row are connected via inter-rack cables, while racks in different rows are connected via inter-row cables located below the floor. The racks are connected to external cables of the cabin via external cables located within the floor's interlayer.

[0010] Furthermore, at least one centralized cable inlet is provided at each end of the length direction of the maintenance channel, and the external cable enters the interlayer of the floor through the centralized cable inlet and connects to the rack.

[0011] Furthermore, multiple inter-row cable routing channels are provided below the floor and spaced apart along the length of the cabin. The inter-row cable routing channels are arranged along the width of the cabin, and the inter-row cables are installed in the inter-row cable routing channels.

[0012] Furthermore, there is a heat dissipation space between the top surface of the frame and the inner top surface of the cabin.

[0013] Furthermore, the rack is arranged from top to bottom as follows: a heat dissipation equipment installation area, a circuit breaker installation area, a secondary assembly equipment installation area, and an inter-rack cable installation area. The heat dissipation equipment, the circuit breaker, the secondary assembly equipment, and the inter-rack cables are respectively installed in the heat dissipation equipment installation area, the circuit breaker installation area, the secondary assembly equipment installation area, and the inter-rack cable installation area.

[0014] Furthermore, the secondary assembly equipment installation area includes a secondary equipment installation area and a terminal installation area located on the left and right sides of the frame. The secondary assembly equipment includes secondary equipment with a front wiring structure disposed in the secondary equipment installation area and terminals with a front wiring structure disposed in the terminal installation area.

[0015] Furthermore, the rack includes a cable laying bracket located at its lower part, and the cable laying brackets located at the lower part of the racks in the same column are interconnected and used to lay cables between the racks. The space enclosed by the cable laying brackets is the cable installation area.

[0016] Furthermore, a door is opened at each end of one long side of the cabin, and at least one folding table is provided between the frame and the door on the same side as the door, which is hung on the internal wall of the cabin.

[0017] Furthermore, auxiliary equipment is arranged on the short side bulkhead inside the cabin, including air conditioners, power distribution boxes, maintenance boxes, cameras, emergency lights, switches, fans, telephones, manual alarms, audible and visual alarms, temporary grounding terminals, and temperature and humidity sensors. The cabin ceiling inside the cabin is equipped with lighting, emergency lighting, smoke detectors, and temperature and humidity sensors.

[0018] Furthermore, an operation and maintenance method based on the prefabricated cabin-type secondary assembly equipment rack layout structure described above includes an operation and maintenance method for inter-rack cables, an operation and maintenance method for inter-row cables, and an operation and maintenance method for external cables.

[0019] The method for maintaining and operating inter-rack cables includes: removing the lower baffle of the rack that needs maintenance to expose the inter-rack cables, and performing maintenance and operating operations on the inter-rack cables;

[0020] The inter-row cable maintenance method includes: lifting the floor above the inter-row cable that needs maintenance to expose the inter-row cable, and performing maintenance operations on the inter-row cable;

[0021] The method for maintaining external cables includes: lifting the top panel of the floor above the external cables that need to be maintained, exposing the floor interlayer, and performing maintenance operations on the external cables inside the floor interlayer.

[0022] The beneficial effects of this invention are:

[0023] Significantly improved cabin space utilization and reduced construction costs: This invention abandons the traditional independent cabinet structure and adopts a rack layout integrated with the cabin design. By optimizing rack size and arrangement, the potential of the cabin space is maximized. Actual application data shows that compared to traditional cabinet layouts, the rack capacity of different types of prefabricated cabins has achieved a breakthrough improvement: Type I cabins can accommodate one more rack, increasing space utilization by 9%; Type II cabins can accommodate four more racks, an increase of 24%; and Type III cabins can accommodate three more racks, an increase of 12%. Improved space utilization means that for the same equipment capacity requirements, smaller cabins can be selected or more equipment can be integrated into cabins of the same size, directly reducing the cost of cabin manufacturing, transportation, and installation, and improving the economic efficiency of substation construction.

[0024] Optimized maintenance space and operational convenience, significantly improving maintenance efficiency: This invention utilizes a two-row, opposing rack design to create a 1450mm wide maintenance aisle between the two rows, fully meeting the requirements of power equipment maintenance specifications and completely solving the problem of cramped maintenance space in traditional single-compartment, double-row layouts (without rear doors). Simultaneously, the racks near the interior of the compartment feature an open structure, coupled with clearly defined equipment installation and cable routing areas, making the equipment and cable layout clearly visible. In terms of maintenance methods, cables between racks can be directly exposed by removing the lower rack panels, and cables between rows and external connections can be easily accessed by lifting the corresponding floor panels, without damaging the compartment structure or being restricted by the enclosed space of traditional cabinets. This enables rapid cable location and maintenance operations, significantly reducing the workload of maintenance personnel and improving the timeliness and efficiency of maintenance. Furthermore, the folding table inside the compartment provides a convenient operating platform for maintenance records and equipment debugging, further optimizing the maintenance experience.

[0025] Simplified wiring and assembly significantly shorten installation and expansion cycles: This invention utilizes secondary equipment and terminals with a front-wiring structure, combined with a modular assembly scheme based on prefabricated cable technology, achieving "plug-and-play" functionality for secondary equipment. This completely eliminates the complex wiring issues caused by traditional panel cabinets assembled by bay. Modular assembly not only reduces on-site assembly workload but also effectively shortens the installation cycle of secondary equipment. Simultaneously, the streamlined cable layout reduces the number of tail cables within the compartment. Combined with centralized cable entry holes, inter-row cable routing channels, and floor interlayer wiring design, cable laying becomes more standardized and convenient. In the long-term equipment expansion and renovation phase, the integrated rack and modular structure eliminate the need for large-scale dismantling and alteration of the original layout. Equipment additions and removals can be completed simply through the rapid connection of prefabricated cables, significantly shortening the construction cycle and improving the flexibility and adaptability of substation construction.

[0026] Optimized protection performance enhances equipment safety and reliability: The integrated structure of the rack and cabin eliminates the need for traditional independent cabinets, fundamentally solving the problem of redundant protection treatment for the cabin and cabinets, reducing protection costs while improving overall protection consistency. The cable laying supports and wiring channels at the bottom of the rack are fireproofed, and combined with the excellent sealing performance of the cabin (eliminating the need for numerous access doors), effectively improving the fireproof, dustproof, and waterproof capabilities of cables and equipment. Furthermore, the rationally arranged auxiliary equipment within the cabin, such as temperature and humidity sensors, smoke detectors, emergency lights, and audible and visual alarms, work synergistically with the pre-reserved heat dissipation space and equipment at the top of the rack, providing a stable and safe environment for equipment operation, further reducing the risk of equipment failure and ensuring the continuous and stable operation of the substation.

[0027] Overall performance is synergistically improved, facilitating efficient substation construction and operation: This invention, through the design of open vertical maintenance channels and cable laying channels, combined with an optical cable repeater box solution, effectively solves problems such as chaotic tail cable management and difficult wiring construction in traditional layouts. Simultaneously, the layered arrangement of heat dissipation equipment, circuit breakers, secondary assembly equipment, and cables on the rack makes the internal layout more organized and facilitates visual inspection. These advantages work synergistically, not only solving the core defects of traditional prefabricated cabin layouts but also achieving a comprehensive improvement in substation construction efficiency, operation and maintenance efficiency, space utilization, and safety and reliability, possessing extremely high engineering application value. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0029] Figure 1 This is a front view of the prefabricated cabin-type secondary assembly equipment frame layout structure designed according to the present invention;

[0030] Figure 2 This is a left view of the prefabricated cabin-type secondary assembly equipment frame layout structure designed according to the present invention;

[0031] Figure 3 A cross-sectional view of the height direction of the prefabricated cabin-type secondary assembly equipment frame layout structure designed in this invention;

[0032] Figure 4 This is a top view of the internal structure of the cabin in this invention;

[0033] Figure 5 This is a front view of the structure in this invention where the inter-row wiring channel is arranged at the bottom of the cabin;

[0034] Figure 6 This is a schematic diagram of the auxiliary equipment arranged on the short side of the cabin in this invention;

[0035] Figure 7 This is a schematic front view of the structure of each arrangement area of ​​the rack in this invention;

[0036] Among them, 1—cabin body, 2—floor, 3—rack, 4—heat dissipation equipment, 5—circuit switch, 6—inter-rack cable, 7—inter-row cable, 8—external cable, 9—centralized cable inlet, 10—inter-row cable routing channel, 11—heat dissipation space, 12—heat dissipation equipment installation area, 13—circuit switch installation area, 14—inter-rack cable installation area, 15—secondary equipment installation area, 16—terminal installation area, 17—secondary equipment, 18—terminal, 19—cable laying bracket, 20—cabin door, 21—folding table, 22—auxiliary equipment, 23—maintenance channel. Detailed Implementation

[0037] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] Example 1

[0039] A prefabricated cabin-type secondary assembly equipment rack layout structure is provided:

[0040] like Figure 1 As shown in Figure 7, the prefabricated cabin includes a rectangular compartment 1. On the two long side walls inside the compartment 1, a row of racks 3, integral with the floor 2, are fixed above the compartment 1. The side of the racks 3 closest to the interior of the compartment 1 has an open structure. From top to bottom, the racks 3 are fitted with cooling equipment 4 (such as cooling fans), circuit breakers 5, secondary assembly equipment (including secondary equipment 17 and terminals 18), and inter-rack cables 6. The space between two rows of racks 3 forms a maintenance passage 23. Racks 3 in the same row are connected by inter-rack cables 6, and racks 3 in different rows are connected by inter-row cables 7 located below the floor 2. The racks 3 are connected to external cables in the compartment via external cables 8 located within the floor interlayer. The prefabricated compartment has dimensions of 13 × 2.8 × 3.2 meters (length × width × height) and includes functional areas such as a rack layout area, a maintenance passage area, an auxiliary equipment layout area, and a cable passage area. The rack measures 2300mm × 700mm × 550mm (height × width × depth), taking into account the specifications of secondary equipment, the layout of the maintenance area, and the structural strength requirements of the rack. The total height of the cabin is 3200mm. After deducting the height of the base and top cover, the net height inside the cabin is 2670mm, and the rack height is 2300mm. A 322mm heat dissipation space is provided at the top of rack 3 to ensure the heat dissipation requirements during normal equipment operation.

[0041] Specifically, such as Figure 3 As shown, there is a heat dissipation space 11 between the top surface of the frame 3 and the inner top surface of the cabin 1. The heat dissipation space 11 is conducive to the upward dissipation of heat generated during equipment operation, preventing heat concentration from causing the equipment to overheat and extending the service life of the equipment.

[0042] like Figure 4 As shown, centralized cable entry holes 9 are provided at both ends of the maintenance channel 23 along its length. External cables enter the mezzanine of the floor 2 through the centralized cable entry holes 9 and connect to the rack 3. Two 800×800mm centralized external cable entry ports are provided at the bottom of the compartment. External optical cables enter the mezzanine of the floor inside the compartment through cable trenches and are then distributed to the target transfer cabinet, realizing centralized external cable entry and exit for the entire compartment, which is convenient for management and maintenance. A door 20 is opened at both ends of one long side of the compartment 1. At least one folding table 21 is installed between the rack 3 located on the same side as the door 20 and the door 20, and is hung on the internal wall of the compartment 1. The door 20 is located at both ends of the long side according to the compartment type, which facilitates personnel access and equipment maintenance. The folding table 21 can be folded up when not in use to save space, and can be unfolded to serve as a temporary workbench when in use, which is convenient for maintenance personnel to perform equipment inspection and operation.

[0043] like Figure 5 As shown, multiple inter-row cable routing channels 10 are spaced apart below the floor 2 along the length of the cabin 1. The inter-row cable routing channels 10 are arranged along the width of the cabin 1, and inter-row cables 7 are installed in the inter-row cable routing channels 10. Depending on the cabin size and the number of cables, 2-4 inter-row cable routing channels 10 are set up. During cable maintenance, only a small part of the floor 2 needs to be lifted. Furthermore, tail cables, cables, etc. are laid out in different areas to achieve full-path optoelectronic isolation and strong and weak current isolation, thereby improving system safety and maintenance convenience.

[0044] like Figure 6 As shown, auxiliary equipment 22 is arranged on the short side bulkhead inside compartment 1. Auxiliary equipment 22 includes air conditioning, a power distribution box, a maintenance box, cameras, emergency lights, switches, fans, telephones, manual alarms, audible and visual alarms, temporary grounding terminals, and temperature and humidity sensors. Lighting, emergency lighting, smoke detectors, and temperature and humidity sensors are arranged on the ceiling inside compartment 1. Auxiliary equipment 22 provides the necessary environmental conditions and safety guarantees for the normal operation of the equipment inside the prefabricated compartment, such as air conditioning to regulate the compartment temperature, cameras for safety monitoring, temperature and humidity sensors to monitor environmental parameters, and smoke detectors for fire early warning.

[0045] like Figure 7As shown, rack 3 is arranged from top to bottom as follows: a heat dissipation equipment installation area 12, a circuit breaker installation area 13, a secondary assembly equipment installation area (including a secondary equipment installation area 15 and a terminal installation area 16), and an inter-rack cable installation area 14. Heat dissipation equipment 4, circuit breakers 5, secondary assembly equipment (including secondary equipment 17 and terminals 18), and inter-rack cables 6 are respectively located in heat dissipation equipment installation area 12, circuit breaker installation area 13, secondary assembly equipment installation area, and inter-rack cable installation area 14. Heat dissipation equipment installation area 12 is used to arrange secondary equipment rack markings and cooling fans; circuit breaker installation area 5 uses a 3U panel, which can accommodate up to 15 2P circuit breakers to meet the installation requirements of each bay; secondary equipment installation area 15 installs secondary equipment 17 and corresponding horizontal cable trays, with equipment accessories installed at the lower part; terminal installation area 16 arranges relevant terminal blocks, vertical cable trays, optical fibers, cables, etc.; the cable laying area is used for laying optical and electrical cables between racks in the same row within the compartment, and for arranging pigtails, fiber storage, and grounding copper busbars. Rack 3 includes cable laying brackets 19 located at its lower part. The cable laying brackets 19 at the lower part of racks 3 in the same row are interconnected and used to run inter-rack cables 6. The space enclosed by the cable laying brackets 19 is the inter-rack cable installation area 14. The inter-rack cables 6 of racks in the same row are set at the bottom of rack 3 and above floor 2. By optimizing the column structure of rack 3, a continuous open cable routing channel is formed, and physical partitions are set to achieve photoelectric separation, thereby improving system safety and stability.

[0046] Example 2

[0047] Based on Embodiment 1, an operation and maintenance method based on a prefabricated cabin-type secondary combined equipment rack layout structure is provided, including an operation and maintenance method for inter-rack cables, an operation and maintenance method for inter-row cables, and an operation and maintenance method for external cables.

[0048] The maintenance methods for inter-rack cabling include the following steps:

[0049] S1: Confirm the location of the rack that needs maintenance;

[0050] S2: Remove the lower baffle of the rack to expose the inter-rack cable 6;

[0051] S3: Perform maintenance operations such as inspection, repair or replacement of the inter-rack cables 6;

[0052] S4: After maintenance is completed, reinstall the lower rack baffle.

[0053] The maintenance method for inter-row cables includes the following steps:

[0054] S1: Determine the location of the inter-column cables that require maintenance;

[0055] S2: Lift the floor 2 above this position to expose the inter-row cable 7;

[0056] S3: Perform maintenance operations such as inspection, repair or replacement of inter-row cables 7;

[0057] S4: After maintenance is complete, restore floor 2.

[0058] The maintenance methods for external cables include the following steps:

[0059] S1: Determine the location of the external cables that need maintenance;

[0060] S2: Lift the top panel of floor 2 above this location to expose the floor interlayer;

[0061] S3: Perform maintenance operations such as inspection, repair or replacement of external cables 8 in the floor interlayer;

[0062] S4: After maintenance is completed, restore the top panel of floor 2.

[0063] The three maintenance methods described above enable efficient and convenient maintenance and management of inter-rack cables, inter-row cables, and external cables. This approach fully leverages the characteristics of the prefabricated modular secondary assembly equipment rack layout, employing different maintenance methods for cables in different locations, thereby improving maintenance efficiency, reducing maintenance time, and lowering maintenance complexity.

[0064] In summary, through targeted structural innovation and optimized operation and maintenance processes, this invention effectively overcomes a series of technical bottlenecks in traditional prefabricated module layouts, achieving significant improvements in space utilization, operation and maintenance efficiency, assembly and construction, and safety protection.

[0065] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims. When using the terms "comprising," "having," and "including" as described in this specification, there may also be another part or other parts, and the terms used are generally singular but may also represent plural forms.

[0066] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. A prefabricated cabin-type secondary assembly equipment frame layout structure, comprising a rectangular cabin (1), characterized in that: On the two long side walls of the interior of the cabin (1), there is a row of racks (3) located above the floor (2) and integrated with the cabin (1). The rack (3) has an open structure on the side closer to the interior of the cabin (1). The rack (3) is fixed with heat dissipation equipment (4), circuit breaker (5), secondary assembly equipment and rack cable (6) from top to bottom. The space between the two rows of racks (3) is the maintenance channel (23). The racks (3) in the same row are connected by the rack cable (6). The racks (3) in different rows are connected by the row cable (7) set below the floor (2). The rack (3) is connected to the external cable of the cabin (1) through the external cable (8) set in the interlayer of the floor (2).

2. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: At least one centralized cable inlet hole (9) is provided at both ends of the length direction of the maintenance channel (23). The external cable (8) enters the interlayer of the floor (2) through the centralized cable inlet hole (9) and connects to the rack (3).

3. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: Below the floor (2), a plurality of inter-row cable routing channels (10) are spaced apart along the length of the cabin (1). The inter-row cable routing channels (10) are arranged along the width of the cabin (1), and the inter-row cables (7) are installed in the inter-row cable routing channels (10).

4. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: There is a heat dissipation space (11) between the top surface of the frame (3) and the inner top surface of the cabin (1).

5. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: The rack (3) is arranged from top to bottom as follows: heat dissipation equipment installation area (12), circuit breaker installation area (13), secondary assembly equipment installation area and rack cable installation area (14). The heat dissipation equipment (4), the circuit breaker (5), the secondary assembly equipment and the rack cable (6) are respectively installed in the heat dissipation equipment installation area (12), the circuit breaker installation area (13), the secondary assembly equipment installation area and the rack cable installation area (14).

6. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 5, characterized in that: The secondary assembly equipment installation area includes a secondary equipment installation area (15) and a terminal installation area (16) located on the left and right sides of the frame (3). The secondary assembly equipment includes a secondary equipment (17) with a front wiring structure installed in the secondary equipment installation area (15) and a terminal (18) with a front wiring structure installed in the terminal installation area (16).

7. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 5 or 6, characterized in that: The rack (3) includes a cable laying bracket (19) located at its lower part. The cable laying brackets (19) located at the lower part of the rack (3) in the same column are interconnected and used to lay the inter-rack cable (6). The space enclosed by the cable laying brackets (19) is the cable installation area (14).

8. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: A door (20) is opened at both ends of one long side of the cabin (1). At least one folding table (21) is provided between the frame (3) located on the same side as the door (20) and the door (20), and is hung on the inner wall of the cabin (1).

9. The prefabricated cabin-type secondary assembly equipment frame layout structure as described in claim 1, characterized in that: Auxiliary equipment (22) is arranged on the short side wall of the interior of the cabin. The auxiliary equipment (22) includes air conditioner, power distribution box, maintenance box, camera, emergency light, switch, fan, telephone, manual alarm, sound and light alarm, temporary grounding terminal, and temperature and humidity sensor. The interior roof of the cabin (1) is equipped with lighting, emergency lighting, smoke detector and temperature and humidity sensor.

10. A method for operation and maintenance of a prefabricated cabin-type secondary assembly equipment rack layout structure according to any one of claims 1-9, characterized in that: It includes methods for the maintenance of cables between racks, between trains, and outside the cabin. The method for maintaining the inter-rack cable includes: removing the lower baffle of the rack (3) that needs maintenance, exposing the inter-rack cable (6), and performing maintenance operations on the inter-rack cable (6); The inter-row cable maintenance method includes: lifting the floor (2) above the inter-row cable (7) that needs maintenance, exposing the inter-row cable (7), and performing maintenance operations on the inter-row cable (7); The method for maintaining the external cable includes: lifting the top panel of the floor (2) above the external cable (8) that needs to be maintained, exposing the floor interlayer, and performing maintenance operations on the external cable (8) inside the floor interlayer.

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