A substation cabinet

Abstract

The application relates to the technical field of transformer substation cabinets, and discloses a transformer substation cabinet, which comprises an outer cabinet, an inner cabinet, a cabinet door and a dehumidification system. The inner cabinet is arranged in the outer cabinet, the front end of the inner cabinet is provided with an opening, the cabinet door is arranged on the front side of the outer cabinet and used for opening and closing the opening, the end face of the inner cabinet facing the opening is provided with a plurality of coaxial and annular sealing bosses, a first sealing strip for sealing with the cabinet door is arranged on each of the sealing bosses, a sealing groove is arranged between adjacent sealing bosses, and a second sealing strip for sealing with the cabinet door is arranged in the sealing groove. The dehumidification system is arranged in the inner cabinet and used for dehumidifying the inner cabinet. The application has the beneficial effect of good sealing performance, which can prevent humid air from entering the cabinet and dehumidify the inner cabinet, so that condensation is avoided in the inner cabinet, the safe operation of electrical equipment is ensured, and the service life of the electrical equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of substation cabinet technology, and in particular to a substation enclosure. Background Technology

[0002] Existing substation enclosures have poor sealing. Under high temperature and humidity conditions, humid air from outside the enclosure can easily enter and form condensation inside, keeping the interior damp. This can easily cause short circuits in electrical equipment, accelerate the corrosion of electronic components, shorten the service life of electrical equipment, and seriously affect the safe operation of electrical equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a substation enclosure with good sealing performance, preventing humid air from entering the enclosure, while also dehumidifying the interior of the enclosure to prevent condensation, thus ensuring the safe operation of electrical equipment and extending its service life.

[0004] To achieve the above objectives, the present invention provides a substation enclosure, comprising:

[0005] outer box;

[0006] An inner box is located inside the outer box, and the front end of the inner box has an opening;

[0007] A door is located on the front side of the outer box and is used to open and close the opening. The end face of the inner box facing the opening is provided with a plurality of coaxial and annularly arranged sealing protrusions. Each of the plurality of sealing protrusions is provided with a first sealing strip for sealing with the door. A sealing groove is provided between adjacent sealing protrusions, and a second sealing strip for sealing with the door is provided in the sealing groove.

[0008] A dehumidification system is installed in the inner box and is used to dehumidify the interior of the inner box.

[0009] Furthermore, the dehumidification system includes a dehumidifier, a drain pipe, a connector, a one-way valve, a ball valve, and a wall-penetrating pipe, which are disposed in the inner box and connected in sequence. The wall-penetrating pipe passes through the inner box and the outer box in sequence and extends to the outside of the outer box.

[0010] Furthermore, the cabinet door and the outer box are connected by hinges. The cabinet door is provided with a locking assembly for connecting with the outer box. The locking assembly includes a door lock, a locking rod unit, and locking blocks. The locking blocks are evenly distributed around the opening in the outer box. The locking blocks have locking grooves. The locking rod unit has a locking part corresponding to the locking groove. The locking rod unit units are sequentially inserted into the locking grooves, and both ends of the locking rod unit units are respectively connected to the lock cylinder of the door lock.

[0011] When the lock cylinder of the door lock rotates, the locking part of the lock rod unit is engaged in the locking groove, and the box door is closed; when the lock cylinder of the door lock rotates, the locking part of the lock rod unit slides out from the locking groove, and the box door is opened.

[0012] Furthermore, the locking rod unit includes a transmission locking rod, a connecting rope, a pulley, and a guide block. Multiple transmission locking rods are arranged on the inner end face of the box door, and each transmission locking rod is provided with a locking part. The pulleys are provided at the four corners of the inner end face of the box door. The connecting rope is provided between adjacent transmission locking rods near the pulleys. The connecting rope is locked in the limiting groove of the pulley. The guide blocks are evenly distributed on the inner end face of the box door, and the guide blocks are provided with openings for guiding the movement of the transmission locking rods.

[0013] Furthermore, the outer box includes a base, a frame, a first sealing plate, a second sealing plate, and a cover plate. The base is fixedly provided with the frame, the inner box is disposed within the frame, the front side of the frame is provided with the box door, the rear side of the frame is provided with the first sealing plate, the left and right sides of the frame are symmetrically provided with the second sealing plate, the top of the frame is provided with the cover plate, and the box door is provided with a viewing window.

[0014] Furthermore, the frame has a hook on the end face facing the first sealing plate in the vertical direction, and the first sealing plate has a through hole corresponding to the hook. The first sealing plate and the frame are fixedly connected by screws.

[0015] Furthermore, the door includes a door panel, a liner, and a reinforcing plate. The liner is provided on the inner side of the door panel facing the opening. The liner and the first sealing strip and the second sealing strip are pressed and sealed. The reinforcing plate is provided between the door panel and the liner.

[0016] Furthermore, the number of the sealing bosses is at least two.

[0017] Furthermore, the inner box is provided with a partition, which divides the inner box into a first cavity and a second cavity, and the dehumidification system is located in the first cavity.

[0018] Furthermore, the inner casing is equipped with a waterproof and breathable valve.

[0019] Compared with existing technologies, the substation enclosure of this invention has the following advantages: it comprises an outer enclosure and an inner enclosure, with the inner enclosure located inside the outer enclosure for storing electrical equipment, thus isolating the inner enclosure from external humid air. Simultaneously, the inner enclosure has multiple annularly arranged sealing protrusions on its opening side, each with a first sealing strip. A sealing groove is provided between adjacent sealing protrusions, and a second sealing strip is installed within the sealing groove. When the enclosure door is closed, multiple seals are achieved between the inner enclosure and the door, resulting in a good sealing effect and preventing humid air from entering the enclosure. Furthermore, a dehumidification system is located within the inner enclosure to dehumidify its interior, preventing condensation and ensuring the safe operation of the electrical equipment, thereby extending its service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the substation enclosure according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the dehumidification system of the substation enclosure according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the inner casing of the substation enclosure according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the substation enclosure according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the frame structure of the substation enclosure according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the first sealing plate of the substation enclosure according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the locking assembly of the substation enclosure according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the transmission locking rod of the substation enclosure according to an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the locking block of the substation enclosure according to an embodiment of the present invention.

[0030] In the diagram, 1 is the outer casing; 11 is the base; 12 is the frame; 121 is the hook; 13 is the first sealing plate; 131 is the through hole; 14 is the second sealing plate; and 15 is the cover plate.

[0031] 2. Inner box; 21. Opening; 22. Partition; 23. First cavity; 24. Second cavity; 25. Sealing boss; 26. First sealing strip; 27. Sealing groove; 28. Second sealing strip;

[0032] 3. Box door; 31. Door panel; 32. Lining panel; 321. Extruded boss; 33. Reinforcing plate; 34. Viewing window;

[0033] 4. Dehumidification system; 41. Dehumidifier; 42. Drain pipe; 43. Connector; 44. Check valve; 45. Ball valve; 46. Through-wall pipe;

[0034] 5. Loose-leaf;

[0035] 6. Locking assembly; 61. Door lock; 62. Locking rod unit; 621. Transmission locking rod; 6211. Locking part; 622. Connecting rope; 623. Pulley; 624. Guide block; 63. Locking block; 631. Locking groove. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "inner," and "outer," etc., used in this invention to indicate orientation or positional relationships are based on the positional relationships shown in the accompanying drawings and are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device and 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 this invention.

[0038] In the description of this invention, it should be understood that the terms "first," "second," etc., are used to describe various types of information, but these terms are not limited to them; they are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0039] See Figures 1 to 10A preferred embodiment of the present invention provides a substation enclosure comprising an outer enclosure 1, an inner enclosure 2, a door 3, and a dehumidification system 4. The outer enclosure 1 is in direct contact with the external environment. The inner enclosure 2 is located inside the outer enclosure 1, and its front end has an opening 21 for housing electrical equipment. To facilitate opening the inner enclosure 2, the door 3 is located on the front side of the outer enclosure 1 for opening and closing the opening 21. To improve the sealing effect between the inner enclosure 2 and the door 3, the inner enclosure 2 has multiple coaxial and annularly arranged sealing bosses 25 on its end face facing the opening 21. Each of the multiple sealing protrusions 25 is provided with a first sealing strip 26 for sealing with the door 3. A sealing groove 27 is provided between adjacent sealing protrusions 25, and a second sealing strip 28 for sealing with the door 3 is provided in the sealing groove 27. When the door 3 is closed, the door 3 compresses the first sealing strip 26 and the second sealing strip 28 to achieve a seal with the inner box 2. In this embodiment, the number of sealing protrusions 25 is at least two, that is, the number of first sealing strips 26 is two and the number of second sealing strips 28 is one, forming at least a triple seal with good sealing effect. It can be adjusted according to actual sealing requirements. To prevent condensation inside the inner box 2, a dehumidification system 4 is provided in the inner box 2 for dehumidifying the interior of the inner box 2.

[0040] In this embodiment, to improve the sealing effect of the inner box 2, refer to... Figure 5 The inner box 2 is made of a single sheet metal piece bent into shape. Simultaneously, the side walls of the sheet metal facing the opening 21 are flanged and bent to form sealing bosses 25, reducing the number of welds in the box and lowering the possibility of welding defects causing protective failure. After the inward welding is completed, the weld quality is first inspected using methods such as penetrant testing, and the inward sealing performance is tested by immersion in water. Once the inner box 2 is deemed to be properly sealed, it is fixedly connected to the outer box 1. In this embodiment, to improve the stability of the connection between the inner box 2 and the outer box 1, they are fixed together by welding.

[0041] Furthermore, to facilitate dehumidification of the interior of inner box 2 while preventing external moisture from entering, please refer to... Figure 2The dehumidification system 4 includes a dehumidifier 41, a drain pipe 42, a connector 43, a one-way valve 44, a ball valve 45, and a wall-penetrating pipe 46, all located within the inner casing 2 and connected in sequence. The wall-penetrating pipe 46 passes through the inner casing 2 and the outer casing 1, extending to the outside of the outer casing 1. The one-way valve 44 and the ball valve 45 prevent water from outside the casing from entering the inner casing 2 through the wall-penetrating pipe 46. Specifically, the ball valve 45 is closed during casing transportation, when there is no power supply on site, and when the dehumidifier 41 is not operating, ensuring the inner casing 2 remains sealed. After power is supplied on site, the dehumidifier 41 begins operation. The condensate formed inside the dehumidifier 41 is discharged to the outside of the casing through the drain pipe 42, via the connector 43, the one-way valve 44, the ball valve 45, and the wall-penetrating pipe 46. The one-way valve 44 can be set to open at a timed interval or at a certain pressure value to ensure timely discharge of condensate to the outside of the casing. Because the one-way valve 44 can withstand a large reverse pressure, even in extreme environments such as flooding, water from outside the enclosure cannot enter the enclosure, giving the enclosure a high level of sealing.

[0042] Furthermore, to facilitate the connection between the door 3 and the outer casing 1, the door 3 and the outer casing 1 are connected by a hinge 5. Simultaneously, to facilitate the door 3 in achieving a compression seal against the first sealing strip 26 and the second sealing strip 28, see [reference needed]. Figure 5 , Figure 8 , Figure 9 The door 3 is equipped with a locking assembly 6 for connecting with the outer box 1. Specifically, the locking assembly 6 includes a door lock 61, a locking rod unit 62, and locking blocks 63. The locking blocks 63 are evenly distributed around the opening 21 of the outer box 1. The locking blocks 63 have locking grooves 631. The locking rod unit has a locking part 6211 corresponding to the locking groove 631. The locking rod unit 62 is sequentially inserted into the locking groove 631, and both ends of the locking rod unit 62 are respectively connected to the lock cylinder of the door lock 61. When the lock cylinder of the door lock 61 rotates, the locking part 6211 of the locking rod unit 62 is engaged in the locking groove 631, and the door 3 is closed. When the lock cylinder of the door lock 61 rotates, the locking part 6211 of the locking rod unit 62 slides out from the locking groove 631, and the door 3 is opened.

[0043] Furthermore, to facilitate the design of the locking rod unit 62, in this embodiment, the locking rod unit 62 includes a transmission locking rod 621, a connecting rope 622, a pulley 623, and a guide block 624. (See reference...) Figure 8 , Figure 9Multiple transmission locking rods 621 are provided on the inner end face of the door 3. Each transmission locking rod 621 is provided with a locking part 6211. Pulleys 623 are provided at the four corners of the inner end face of the door 3. A connecting soft rope 622 is provided between adjacent transmission locking rods 621 near the pulley 623. The connecting soft rope 622 is locked in the limiting groove of the pulley 623. Guide blocks 624 are evenly distributed on the inner end face of the door 3. The guide blocks 624 are provided for guiding the movement of the transmission locking rods 621, i.e., the lock cylinder of the door lock 61 rotates. Multiple transmission locking rods 621 move synchronously in the vertical or horizontal direction respectively. The connecting soft rope 622 can slide around the pulley 623 and undergo elastic deformation. The locking part 6211 is locked in the locking groove 631, and the door 3 is closed.

[0044] Furthermore, in order to ensure that the first sealing strip 26 and the second sealing strip 28 are subjected to uniform force and achieve the predetermined compression amount to obtain a better sealing effect, in this embodiment, refer to... Figure 10 The locking part 6211 uses a roller, and the locking groove 631 has guide slopes at both ends and an arc-shaped limiting groove in the middle. When the door 3 is closed, the roller rolls along the guide slope, the transmission locking rod 621 moves toward the opening 21, and stretches the connecting soft rope 622. The distance between the door 3 and the opening 21 gradually decreases. When the roller moves along the... Figure 10 After rolling to the arc-shaped limiting groove in the direction of the middle arrow, the door 3 is closed, so that the first sealing strip 26 and the second sealing strip 28 reach the predetermined compression amount.

[0045] Furthermore, to facilitate the design of outer casing 1, please refer to... Figure 1 The outer casing 1 includes a base 11, a frame 12, a first sealing plate 13, a second sealing plate 14, and a cover plate 15. The base 11 is fixedly equipped with the frame 12. The inner casing 2 is located inside the frame 12. The front side of the frame 12 is equipped with a door 3. The rear side of the frame 12 is equipped with the first sealing plate 13. The left and right sides of the frame 12 are symmetrically equipped with second sealing plates 14. The top of the frame 12 is equipped with a cover plate 15. The first sealing plate 13, the second sealing plate 14, and the cover plate 15 are all connected to the frame 12 by rivets to avoid secondary processing of the inner casing 2. At the same time, in order to facilitate the observation of the working status of the electrical equipment inside the inner casing 2, the door 3 is equipped with a viewing window 34.

[0046] Furthermore, in order to improve the overall structural strength of the door 3 and prevent deformation of the door 3, please refer to... Figure 5The door 3 includes a door panel 31, a liner 32, and a reinforcing plate 33. The liner 32 is provided on the inner side of the door panel 31 facing the opening 21. The liner 32 is pressed and sealed with the first sealing strip 26 and the second sealing strip 28. The liner 32 is also provided with a pressing boss 321 corresponding to the second sealing strip 28. The reinforcing plate 33 is provided between the door panel 31 and the liner 32 to prevent the door panel 31 and the liner 32 from deforming due to repeated pressing of the sealing strip. In this embodiment, the reinforcing plate 33 is U-shaped.

[0047] Furthermore, to prevent vertical movement of the first sealing plate 13 and frame 12 after installation, and to facilitate positioning of the first sealing plate 13 and frame 12 during installation, please refer to... Figure 6 , Figure 7 The frame 12 has a hook 121 on the end face of the first sealing plate 13 in the vertical direction. The first sealing plate 13 has a through hole 131 corresponding to the hook 121. The first sealing plate 13 and the frame 12 are fixedly connected by screws.

[0048] Furthermore, to facilitate the arrangement of electrical equipment within the inner casing 2, and to separate the dehumidification system 4 from the electrical equipment for easier subsequent maintenance, in this embodiment, refer to... Figure 2 The inner casing 2 is equipped with a partition 22, which divides the inner casing 2 into a first cavity 23 and a second cavity 24. The dehumidification system 4 is located in the first cavity 23. Furthermore, in order to maintain the air pressure balance between the inside and outside of the casing, the inner casing 2 is also equipped with a waterproof and breathable valve with a sealing rating of IP67 or higher. At the same time, in order to facilitate the wiring of electrical equipment and the outside, a wire connection with a sealing rating of IP67 or higher is provided at the bottom of the inner casing 2 to facilitate wire pulling. Alternatively, a female connector for wiring to the outside can be provided in the inner casing 2. One end of the female connector is connected to the electrical equipment in the inner casing 2, and the other end is located outside the outer casing 1. The sealing rating between the female connector and the inner casing 2 is IP67 or higher. The end of the female connector located in the outer casing 1 is equipped with a sealing cap. External wire harnesses can be connected directly to the female connector via a male connector.

[0049] In summary, this embodiment of the invention provides a substation enclosure comprising an outer enclosure 1 and an inner enclosure 2. The inner enclosure 2 is located inside the outer enclosure 1 and is used to store electrical equipment, isolating the inner enclosure 2 from external humid air. Simultaneously, the end face of the inner enclosure 2 facing the opening 21 has multiple annularly arranged sealing protrusions 25, each with a first sealing strip 26. A sealing groove 27 is provided between adjacent sealing protrusions 25, and a second sealing strip 28 is provided within the sealing groove 27. When the enclosure door 3 is closed, multiple seals are achieved between the inner enclosure 2 and the enclosure door 3, providing a good sealing effect and preventing humid air from entering the enclosure. Furthermore, a dehumidification system 4 is located in the inner enclosure 2 to dehumidify the interior of the inner enclosure 2, preventing condensation inside the enclosure, ensuring the safe operation of the electrical equipment, and extending the service life of the electrical equipment.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A substation enclosure, characterized in that: include outer box; The inner box is located inside the outer box. The front end of the inner box has an opening. The inner box is made of a sheet metal piece bent into shape. The sheet metal is bent and folded around the opening to form a sealing boss. A door, located on the front side of the outer casing, is used to open and close the opening. The inner casing has multiple coaxial and annularly arranged sealing bosses on its end face facing the opening. Each sealing boss has a first sealing strip for sealing with the door. A sealing groove is provided between adjacent sealing bosses, and a second sealing strip for sealing with the door is provided within the sealing groove. The door and the outer casing are connected by a hinge. The door has a locking assembly for connecting with the outer casing. The locking assembly includes a door lock, a locking rod unit, and locking blocks. The locking blocks are evenly distributed around the opening on the outer casing, and each locking block has a locking groove. The locking rod unit has a locking part corresponding to the locking groove, and the locking rod unit passes sequentially through the locking groove. Both ends of the lock are connected to the lock cylinder of the door lock; wherein, when the lock cylinder of the door lock rotates, the locking part of the lock rod unit is engaged in the locking groove, and the door is closed; when the lock cylinder of the door lock rotates, the locking part of the lock rod unit slides out from the locking groove, and the door is opened; the lock rod unit includes a transmission lock rod, a connecting rope, a pulley, and a guide block. Multiple transmission lock rods are provided on the inner end face of the door, each transmission lock rod is provided with the locking part, the pulleys are provided at the four corners of the inner end face of the door, the connecting rope is provided between adjacent transmission lock rods near the pulleys, the connecting rope is engaged in the limiting groove of the pulley, and the guide blocks are evenly distributed on the inner end face of the door, and the guide blocks are provided for guiding the movement of the transmission lock rods; A dehumidification system is installed in the inner box and is used to dehumidify the interior of the inner box.

2. The substation enclosure as described in claim 1, characterized in that: The dehumidification system includes a dehumidifier, a drain pipe, a connector, a one-way valve, a ball valve, and a wall-penetrating pipe, which are installed in the inner box and connected in sequence. The wall-penetrating pipe passes through the inner box and the outer box in sequence and extends to the outside of the outer box.

3. The substation enclosure as described in claim 1, characterized in that: The outer box includes a base, a frame, a first sealing plate, a second sealing plate, and a cover plate. The frame is fixedly mounted on the base. The inner box is located inside the frame. The box door is located on the front side of the frame. The first sealing plate is located on the rear side of the frame. The second sealing plates are symmetrically arranged on the left and right sides of the frame. The cover plate is located on the top of the frame. The box door has a viewing window.

4. The substation enclosure as described in claim 3, characterized in that: The frame has a hook on the end face facing the first sealing plate in the vertical direction, and the first sealing plate has a through hole corresponding to the hook. The first sealing plate and the frame are fixedly connected by screws.

5. The substation enclosure as described in claim 1, characterized in that: The door includes a door panel, a liner, and a reinforcing plate. The liner is provided on the inner side of the door panel facing the opening. The liner and the first sealing strip and the second sealing strip are pressed and sealed. The reinforcing plate is provided between the door panel and the liner.

6. The substation enclosure as described in claim 1, characterized in that: The number of sealing bosses is at least two.

7. The substation enclosure as described in claim 1, characterized in that: The inner box is provided with a partition, which divides the inner box into a first cavity and a second cavity, and the dehumidification system is located in the first cavity.

8. The substation enclosure as described in claim 1, characterized in that: The inner box is equipped with a waterproof and breathable valve.

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