A fully sealed transition box for transformer tubular truss

Abstract

The utility model relates to a kind of full sealing adapter box for transformer tubular bridge, including box, multiple round pipe interfaces are arranged on box outer wall, waterproof joint is installed on round pipe interface, cabinet interface is equipped in one end of box, flange is fixedly connected on cabinet interface, operation window is opened in box, and seal door that can be opened and closed is installed on operation window.The utility model connects the round pipe bridge and control cabinet of transformer using adapter box, the waterproof dustproof sealing effect between round pipe bridge and control cabinet is greatly improved by the switching of adapter box, the internal wiring safety is guaranteed, and the lead wire is more convenient;The cable of round pipe output is introduced into control cabinet after being connected and leaded in adapter box inside, personnel is facilitated to reasonably and effectively utilize control cabinet internal space, so that the incoming line in control cabinet is more regular, and it is convenient for later maintenance and troubleshooting.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to the connection technology between the circular tube bridge of a transformer and the air-cooled control cabinet, specifically referring to a fully sealed adapter box for a transformer tubular bridge. Background Technology

[0002] In the cooling system of large power transformers, the air-cooled control cabinet houses secondary equipment such as cooler control, protection, and signal circuits. A large number of control cables, signal cables, and power cables need to be laid between the control cabinet and the transformer body to transmit control commands, status signals, and power supply. Currently, products exported to developed countries such as Europe and America typically require the use of circular pipe cable trays. A common connection method is to directly connect the circular pipes of the cable tray to the inlet of the air-cooled control cabinet, and then run the cables through the pipes into the control cabinet. This method has the following significant drawbacks: First, the round pipe needs to be connected to the inlet port at the bottom of the air-cooled control cabinet using a connector. If a steel pipe connector is used, the size is too large and the bottom connection is difficult to install. If a flexible hose is used for connection, the waterproof and dustproof sealing effect is not good. Secondly, the bottom dimensions of the air-cooled control cabinet are limited, resulting in insufficient space. Multiple round pipes are directly introduced into the cabinet, which is inconvenient and can easily lead to concentrated wiring at the bottom of the air-cooled control cabinet, with multiple cables crossing each other, which is not conducive to later maintenance and troubleshooting.

[0003] Therefore, there is an urgent need to design a dedicated junction box to solve the above problems and achieve safe, reliable, sealed and convenient cable connection between the transformer round tube bridge and the air-cooled control cabinet. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a fully sealed adapter box for transformer tubular cable trays. The adapter box has a compact structure, is easy to install and operate, has good sealing performance, and a high protection level. It can effectively protect the connecting cables, provide a convenient operating interface, and simplify the incoming line structure of the air-cooled control cabinet.

[0005] This utility model is achieved through the following technical solution: a fully sealed adapter box for transformer tubular cable trays, including a box body, multiple round pipe interfaces arranged on the outer wall of the box body, waterproof connectors installed on the round pipe interfaces, a cabinet interface provided at one end of the box body, a flange fixed to the cabinet interface, an operation window opened on the box body, and a sealable door that can be opened and closed installed on the operation window.

[0006] This solution uses an adapter box to connect the transformer's round tube cable tray and the control cabinet. The round tubes of the cable tray connect to the round tube interfaces on the box, and waterproof joints are used to improve the waterproof sealing effect at the connection. The cabinet interface at the end of the box connects to the control cabinet's cable inlet, and flanges combined with sealing gaskets are used to improve the sealing of the connection. The adapter box significantly improves the waterproof and dustproof sealing effect between the round tube cable tray and the control cabinet, ensuring the safety of internal wiring and making wiring more convenient.

[0007] The junction box allows the cables output from the round conduit to be routed and wired inside before being introduced into the control cabinet. This facilitates the efficient use of the control cabinet's internal space, resulting in neater wiring and easier maintenance and troubleshooting. Furthermore, the box features an operating window for easy access to the wiring, which is sealed with a door to ensure the box's airtightness.

[0008] As an optimization, the box includes a first vertical segment and a second vertical segment that are parallel to each other, and a horizontal segment connecting the first vertical segment and the second vertical segment. The upper end of the second vertical segment is lower than the upper end of the first vertical segment. This optimized design gives the box an overall U-shaped structure, thus providing more wiring space and improving the neatness of the wiring inside the box.

[0009] As an optimization, the box body includes an L-shaped first split box and an L-shaped second split box. The vertical side of the first split box forms the first vertical segment, and the horizontal end of the first split box is detachably connected to the horizontal end of the second split box to form the horizontal segment. The vertical side of the second split box forms the second vertical segment. The specific structure of this optimized box body consists of two split boxes connected together, facilitating installation, disassembly, and internal wiring, and simplifying future inspection and maintenance.

[0010] As an optimization, the multiple round pipe interfaces are located on the first vertical section, and the upper opening of the second vertical section forms the cabinet interface. In this optimized design, the cabinet interface is located at the upper end of the lower second vertical section. When connected to the control cabinet, the first vertical section can be hidden behind the control cabinet, resulting in a more aesthetically pleasing overall installation. Furthermore, with the round pipe interfaces located on the first vertical section, the cable leads must pass through the first vertical section, the horizontal section, and the second vertical section before entering the control cabinet, thus effectively utilizing the internal space of the box and improving the neatness of the internal wiring.

[0011] As an optimization, the axis of the circular tube interface is perpendicular to the axis of the horizontal section. This optimization allows the circular tube to connect to the side of the first vertical section for easy installation and fixation of the rear side of the first vertical section of the box.

[0012] As an optimization, the operation window is located on the side wall of the first vertical segment near the second vertical segment. This optimized solution positions the operation window on the front side of the first vertical segment, facilitating internal operation and easy installation and fixation on the rear side of the first vertical segment.

[0013] As an optimization, a hand hole for threading cables is provided on the side wall of the horizontal section, and a cover is installed on the hand hole. This optimization scheme facilitates personnel to operate and organize the incoming cables in the horizontal section through the hand hole, improving ease of use.

[0014] As an optimization, a drain hole is provided at the bottom of the horizontal section, and a plug cap is installed on the drain hole. This optimized solution allows for the manual drainage of any small amount of condensate or accidentally introduced liquid that may enter the box, while maintaining internal and external air pressure balance. The drain hole is sealed with a plug cap to ensure airtightness.

[0015] As an optimization, reinforcing ribs are fixed to the inner walls of the first vertical section, the second vertical section, and the horizontal section. This optimization increases the structural strength of the box while also securing cables and ensuring aesthetically pleasing cable routing.

[0016] As an optimization, a mounting plate is fixedly connected to the side wall of the first vertical section away from the second vertical section, and the mounting plate has elongated through holes. In this optimized solution, the mounting plate is used to connect with the transformer body support to achieve the installation and fixation of the housing.

[0017] The beneficial effects of this utility model are as follows: the transformer's round tube bridge and control cabinet are connected by an adapter box. Through the adapter box, the waterproof and dustproof sealing effect between the round tube bridge and the control cabinet is greatly improved, ensuring the safety of internal wiring and making wiring more convenient.

[0018] The cables output from the round tube are connected and routed inside the junction box before being introduced into the control cabinet. This allows personnel to make reasonable and effective use of the internal space of the control cabinet, making the internal wiring of the control cabinet more organized and facilitating later maintenance and troubleshooting.

[0019] This junction box features a compact structure, convenient installation, maintenance, and operation, excellent sealing, and a high level of protection. It effectively protects the connecting cables, provides a convenient operating interface, and effectively solves the problems of protection, sealing, and maintenance of cable connections between transformer round tube bridges and air-cooled control cabinets. It significantly improves the safety and reliability of the secondary circuit of the power transformer cooling system. Attached Figure Description

[0020] Figure 1 This is a side view of the present invention; Figure 2 This is a front view of the present utility model; Figure 3 This is a side view of the present invention in its installed state; Figure 4This is a schematic diagram of a flange. As shown in the figure: 1. Box body; 11. First vertical section; 12. Horizontal section; 13. Second vertical section; 14. First split box; 15. Second split box; 2. Round pipe interface; 3. Cabinet interface; 4. Flange; 5. Sealing door; 6. Mounting support plate; 7. Reinforcing rib plate; 8. Wiring hand hole; 9. Cover; 10. Drain hole; 21. Plug cap; 22. Hinge; 23. Operating window; 24. Lock; 25. Round pipe; 26. Air-cooled control cabinet. Detailed Implementation

[0021] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0022] like Figures 1-4 As shown, a fully sealed adapter box for transformer tubular cable trays is used to connect the transformer's tubular cable tray and the air-cooled control cabinet 26. The fully sealed adapter box includes a box body 1, with multiple tubular interfaces 2 arranged on the outer wall of the box body 1, and waterproof connectors installed on the tubular interfaces 2. A cabinet interface 3 is provided at one end of the box body 1, and a flange 4 is fixedly connected to the cabinet interface 3. An operating window 23 is provided on the box body 1, and a sealable door 5 that can be opened and closed is installed on the operating window 23.

[0023] The circular pipe interface 2 is used to connect with the circular pipe 25 of the circular pipe cable tray, and the waterproof joint improves the waterproof sealing effect at the connection. The cabinet interface 3 is used to connect with the bottom cable inlet of the air-cooled control cabinet 26, and the flange 4 and sealing gasket improve the sealing performance at the connection. The operating window 23 is used for personnel to perform wiring operations inside, and the operating window 23 is sealed and closed by the sealing door 5 to ensure the airtightness of the box 1.

[0024] The junction box significantly improves the waterproof and dustproof sealing between the round tube cable tray and the control cabinet, ensuring the safety of internal wiring and making wiring more convenient. The cable output from the round tube 25 is connected and routed inside the junction box before being introduced into the air-cooled control cabinet 26, which facilitates the rational and effective use of the internal space of the control cabinet, making the internal wiring of the control cabinet more organized and facilitating later maintenance and troubleshooting.

[0025] The box body 1 includes a first vertical segment 11 and a second vertical segment 13 that are parallel to each other, and a horizontal segment 12 connecting the first vertical segment 11 and the second vertical segment 13. The two ends of the horizontal segment 12 are respectively connected to the lower ends of the first vertical segment 11 and the second vertical segment 13. The upper end of the second vertical segment 13 is lower than the upper end of the first vertical segment 11.

[0026] The box 1 is U-shaped overall, with its two upper ends set at different heights for a more aesthetically pleasing appearance after installation. The U-shape also provides more internal wiring space, improving the neatness of the wiring within the box. The box 1 is made of stainless steel, offering high structural strength and corrosion resistance. The first vertical section 11, the horizontal section 12, and the second vertical section 13 all have rectangular cross-sections.

[0027] Specifically, the box body 1 includes an L-shaped first split box 14 and an L-shaped second split box 15. The vertical side of the first split box 14 forms the first vertical segment 11. The horizontal side of the first split box 14 is detachably connected to the horizontal side of the second split box 15 to form the horizontal segment 12. The vertical side of the second split box 15 forms the second vertical segment 13. In this embodiment, a flange 4 is fixedly connected to the horizontal end of the first split box 14, and a flange 4 is also fixedly connected to the horizontal end of the second split box 15. The flange 4 is a rectangular flange with bolt holes evenly distributed around its circumference. The two flanges 4 are fixed together by bolts, achieving a detachable connection between the horizontal ends of the first split box 14 and the second split box 15. A sealing gasket is installed between the two flanges 4 to improve the sealing performance at the connection.

[0028] The specific structure of the box 1 is composed of a first split box 14 and a second split box 15 connected together. The box 1 adopts a split design, which facilitates installation, disassembly and internal wiring operations, and facilitates later inspection and maintenance.

[0029] Specifically, the multiple round pipe interfaces 2 are disposed on the first vertical section 11, and the axis of the round pipe interfaces 2 is perpendicular to the axis of the horizontal section 12. That is, the round pipe interfaces 2 are located on one side of the vertical edge of the first split box 14, and the cable leads need to pass through the first vertical section 11, the horizontal section 12, and the second vertical section 13 before entering the control cabinet, thereby effectively utilizing the internal wiring space of the box 1 and improving the neatness of the internal wiring of the box 1. The round pipe 25 is connected to the side of the first vertical section 11 for cable entry, which facilitates the installation and fixation of the rear side of the first vertical section 11.

[0030] Specifically, the upper end of the first split box 14 is closed. The upper port of the second vertical section 13 is open to form the cabinet interface 3. That is, the upper port of the vertical side of the second split box 15 is the cabinet interface 3. A flange 4 is fixedly connected to the upper port of the vertical side of the second split box 15. The flange 4 is a rectangular flange 4 with bolt holes evenly distributed around its circumference. The flange 4 of the cabinet interface 3 is fixedly connected to the flange 4 of the bottom inlet of the air-cooled control cabinet 26 by bolts, and a sealing gasket is installed between the two flanges 4. The cabinet interface 3 is located at the upper end of the lower second vertical section 13. When connected to the air-cooled control cabinet 26, the first vertical section 11 can be hidden behind the air-cooled control cabinet 26, making the overall installation effect more aesthetically pleasing.

[0031] Specifically, the operation window 23 is located on the side wall of the first vertical section 11 near the second vertical section 13. The operation window 23 is located on the front side of the first vertical section 11, which facilitates internal operation by personnel and makes it easy to install and fix on the rear side of the first vertical section 11.

[0032] The sealing door 5 described in this embodiment is used to close the operating window 23 and maintain the internal airtightness of the housing 1. The sealing door 5 is mounted on the housing 1 via a hinge 22, and a latch 24 is installed on the sealing door 5 to control its opening and closing. A rubber sealing strip is embedded in the inner edge of the sealing door 5, achieving a complete seal while allowing for free opening and closing for convenient operation.

[0033] Specifically, a mounting plate 6 is fixedly connected to the side wall of the first vertical section 11 away from the second vertical section 13, and the mounting plate 6 has elongated through holes. In this embodiment, multiple mounting plates 6 are fixedly connected to the rear side wall of the first vertical section 11, and the multiple mounting plates 6 are evenly distributed along the axial direction of the first vertical section 11. The first vertical section 11 is bolted to the transformer body support through the mounting plates 6, thereby realizing the installation and fixation of the housing 1.

[0034] Specifically, reinforcing ribs 7 are fixedly attached to the inner walls of the first vertical section 11, the second vertical section 13, and the horizontal section 12. The reinforcing ribs 7 are U-shaped plates with bolt holes. The wiring inside the housing 1 can be fixed to the reinforcing ribs 7 using clamps or binding. The reinforcing ribs 7 increase the structural strength of the housing 1 while also securing cables and ensuring aesthetically pleasing wiring.

[0035] Specifically, a hand hole 8 is provided on the side wall of the horizontal section 12, and a cover 9 is inserted and installed on the hand hole 8. In this embodiment, the hand hole 8 is located on the side of the horizontal side of the second split box 15, and the cover 9 is used to close the hand hole 8. The hand hole 8 facilitates personnel to operate and organize the incoming wires in the horizontal section 12, improving ease of use.

[0036] Specifically, a drain hole 10 is provided at the bottom of the horizontal section 12, and a plug cap 21 is inserted and installed on the drain hole 10. In this embodiment, the drain hole 10 is located on the bottom surface of the horizontal side of the second split box 15, and the plug cap 21 is used to seal the drain hole 10. During use, the personnel can manually open the drain hole 10 to drain any small amount of condensate or liquid that may have entered the box 1, while maintaining the internal and external air pressure balance.

[0037] Working principle: During installation, firstly, the first split box 14 is bolted to the transformer body support via the mounting plate 6. Then, the cabinet interface 3 of the second split box 15 is bolted to the bottom inlet flange 4 of the air-cooled control cabinet 26 via the flange 4. Next, the position of the air-cooled control cabinet 26 is adjusted so that the first split box 14 and the second split box 15 are bolted together. Finally, the round pipe 25 of the round pipe cable tray is connected to the waterproof joint of the round pipe interface 2 to complete the installation.

[0038] After the junction box is installed, the round pipe 25 leads the cable into the box 1. Personnel can then use the operation window 23 and the cable threading hole 8 to run the cable inside the box 1, and finally lead the cable out to the air-cooled control cabinet 26.

[0039] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A fully sealed adapter box for transformer tubular cable trays, characterized in that: Includes a box body (1), with multiple round pipe interfaces (2) arranged on the outer wall of the box body (1), waterproof connectors installed on the round pipe interfaces (2), a cabinet interface (3) provided at one end of the box body (1), a flange (4) fixedly connected to the cabinet interface (3), an operation window (23) opened on the box body (1), and a sealable door (5) that can be opened and closed is installed on the operation window (23).

2. The fully sealed adapter box for transformer tubular cable trays according to claim 1, characterized in that: The box body (1) includes a first vertical section (11) and a second vertical section (13) that are parallel to each other, and a horizontal section (12) that connects the first vertical section (11) and the second vertical section (13). The upper end of the second vertical section (13) is lower than the upper end of the first vertical section (11).

3. The fully sealed adapter box for transformer tubular cable trays according to claim 2, characterized in that: The box body (1) includes an L-shaped first split box (14) and an L-shaped second split box (15). The vertical side of the first split box (14) forms the first vertical segment (11). The horizontal side of the first split box (14) and the horizontal side of the second split box (15) are detachably connected to form the horizontal segment (12). The vertical side of the second split box (15) forms the second vertical segment (13).

4. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: The plurality of round tube interfaces (2) are disposed on the first vertical section (11), and the upper port opening of the second vertical section (13) is configured to form the cabinet interface (3).

5. The fully sealed adapter box for transformer tubular cable trays according to claim 4, characterized in that: The axial direction of the circular tube interface (2) is perpendicular to the axial direction of the horizontal section (12).

6. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: The operation window (23) is located on the side wall of the first vertical section (11) near the second vertical section (13).

7. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: A threading hand hole (8) is provided on the side wall of the horizontal section (12), and a cover (9) is installed on the threading hand hole (8).

8. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: The bottom of the horizontal section (12) is provided with a drain hole (10), and a plug cap (21) is installed on the drain hole (10).

9. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: The inner walls of the first vertical section (11), the second vertical section (13) and the horizontal section (12) are all fixed with reinforcing ribs (7).

10. The fully sealed adapter box for transformer tubular cable trays according to claim 2 or 3, characterized in that: A mounting plate (6) is fixedly connected to the side wall of the first vertical section (11) away from the second vertical section (13), and a long strip perforation is provided on the mounting plate (6).

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