Three-phase grid-connected inverter cabinet

Abstract

The invention discloses a three-phase grid-connected inverter cabinet, and relates to the technical field of three-phase grid-connected inverter cabinets. Comprising a cabinet body and further comprises a bottom frame arranged below the cabinet body. The first surrounding plate is installed in the cabinet body, and the sliding groove is formed in the first surrounding plate; the lifting mechanism is arranged on the first surrounding plate and comprises a first sliding block and a second sliding block which are connected through a telescopic column, the first sliding block and the second sliding block are both slidably connected to the interior of the sliding groove, a first filter screen provided with a first through hole is arranged outside the first sliding block, and a second filter screen provided with a second through hole is arranged outside the second sliding block. A second filter screen provided with a second through hole is arranged outside the second sliding block, and the first sliding block and the second sliding block are used for driving the first filter screen and the second filter screen to ascend and descend in the cabinet body. The liquid storage mechanism is arranged in the bottom frame; and the first lifting rod is mounted on the bottom frame. The three-phase grid-connected inverter cabinet achieves the purpose of improving the use efficiency of equipment.

Description

Technical Field

[0001] This invention relates to the field of three-phase grid-connected inverter cabinet technology, specifically a three-phase grid-connected inverter cabinet. Background Technology

[0002] A three-phase grid-connected inverter cabinet is an intelligent integrated control center that connects new energy power generation equipment to the public power grid. It converts the DC power generated by photovoltaic panels or wind turbines into three-phase AC power synchronized with the grid, and integrates key electrical equipment such as grid-connected protection, safety isolation, and real-time monitoring into a single cabinet.

[0003] A photovoltaic grid-connected inverter cabinet is disclosed in invention patent publication number CN110785039A. The cabinet has a drying plate at the bottom. When the cabinet is in operation, the drying plate is attached to the bottom shelf and can be filled with desiccant to dry the inside of the cabinet, preventing increased humidity and potential short circuits. However, dust tends to accumulate at the heat dissipation vents, affecting the cabinet's heat dissipation. Summary of the Invention

[0004] To overcome the problem of dust accumulation at the heat dissipation vents affecting the heat dissipation of the cabinet, this invention provides a three-phase grid-connected inverter cabinet, including a cabinet body, and further comprising: The base frame is installed below the cabinet; The first enclosure panel installed inside the cabinet and the sliding groove opened in the first enclosure panel; The lifting mechanism installed on the first enclosure includes a first slider and a second slider connected by a telescopic column. The first slider and the second slider are slidably connected inside the slide groove. A first filter screen with a first through hole is provided on the outside of the first slider, and a second filter screen with a second through hole is provided on the outside of the second slider. The first slider and the second slider are used to drive the first filter screen and the second filter screen to rise and fall inside the cabinet.

[0005] Preferably, it further includes: Liquid storage mechanism located inside the base frame; The first lifting rod is mounted on the base frame. The telescopic end of the first lifting rod is connected to the first slider. The first lifting rod drives the first slider, the telescopic column, the second slider, the first filter screen, and the second filter screen to move in the vertical direction.

[0006] Preferably, the liquid storage mechanism includes: Side plates installed on the outside of the base frame and mounting holes opened on the side plates; The first and second enclosures are both rectangular in shape and are provided on the outside of the base frame and have a passage inside the second enclosure.

[0007] Preferably, the liquid storage mechanism further includes: The first base plate is slidably connected to the second enclosure plate; The first adjusting rod is installed on the first base plate and is connected to the lifting mechanism. The lifting mechanism drives the first adjusting rod and the first base plate to move in the vertical direction.

[0008] Preferably, the liquid storage mechanism further includes: A connecting pipe installed outside the second enclosure, the connecting pipe being connected to the second enclosure via a channel; The inclined tubes located outside the connecting pipe and the through slots in the base frame are inclined downwards to facilitate downward flow of liquid and reduce the occurrence of liquid backflow into the connecting pipe.

[0009] Preferably, the lifting mechanism further includes: The connecting plate and the pad installed on the first enclosure are used to support the partition inside the cabinet at the corners. The connecting rods are mounted on the connecting plate and are configured in a cross shape.

[0010] Preferably, the lifting mechanism further includes: The first frame is connected to the first slider via a connecting rod, and the first frame is connected to the first filter via a first telescopic rod; The pointed rod installed in the first box and the connecting ball installed on the pointed rod.

[0011] Preferably, the lifting mechanism further includes: The second frame is connected to the second slider via a connecting rod. The second frame is connected to the second filter via a second telescopic rod. An arc-shaped groove is provided on the second frame.

[0012] Preferably, the lifting mechanism further includes: The second adjusting rod installed below the second filter screen and the connecting plate connected to the telescopic end of the second adjusting rod; A second base plate is located at the bottom of the connecting plate, and a docking plate is installed below the second base plate. The docking plate is connected to the first adjusting rod and is adapted to the second enclosure plate.

[0013] This invention provides a three-phase grid-connected inverter cabinet. It has the following beneficial effects: 1. This three-phase grid-connected inverter cabinet, by incorporating a first lifting rod, a first sliding block, a telescopic column, a second sliding block, a first filter, and a second filter, uses the first lifting rod to control the reciprocating motion of the first sliding block, telescopic column, second sliding block, first filter, and second filter in the vertical direction. This promotes the movement of dust and impurities accumulated on the first and second filters. As the fan drives the air to move the dust downwards, the air also carries the dust and impurities that have detached from the first and second filters downwards, further clearing the first and second filters and improving heat dissipation within the cabinet. This lifting and swaying motion of the first and second filters at the heat dissipation vents prevents dust accumulation from affecting the cabinet's heat dissipation.

[0014] 2. This three-phase grid-connected inverter cabinet features a liquid storage mechanism. Screws are used to reinforce the side panels at the mounting holes, thereby strengthening the base frame and cabinet body and preventing cabinet swaying. A storage space enclosed by the second side panel and the first base plate stores water that enters between the four base frames and floods the storage space. As the water reaches the channel height, it is discharged through connecting pipes and inclined pipes. Remaining water is discharged after rain by a lifting mechanism that raises the first base plate, preventing rainwater from accumulating below the cabinet and flooding it, thus preventing the cabinet from becoming damp.

[0015] 3. This three-phase grid-connected inverter cabinet is equipped with a lifting mechanism. The first lifting rod drives the first slider, telescopic column, second slider, first filter, and second filter to reciprocate in the vertical direction. The working state of the telescopic column, the first telescopic rod, and the second telescopic rod switches between being stretched and compressed. During the vertical movement of the first filter, it repeatedly collides with the connecting ball on the tip and the second frame below the first filter. The second filter repeatedly collides with the second frame, promoting the removal of impurities from the first and second filters.

[0016] 4. This three-phase grid-connected inverter cabinet, through the installation of a lifting mechanism and a liquid storage mechanism, uses a first lifting rod to move a second adjusting rod and a base plate upwards, facilitating the drainage of any remaining water on the base plate through the channel into the connecting pipe. Simultaneously, the first lifting rod moves the first slider, second slider, telescopic column, first frame, first filter, second frame, and second filter upwards. The telescopic column, first telescopic rod, and second telescopic rod also deform, promoting the shedding of impurities from the first and second filters. At the same time, the fan in the cabinet is activated, causing impurities to fall downwards onto the second base plate, where dust and impurities slide off through the curved surface area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the structure of the base frame of the present invention; Figure 4 This is a schematic diagram of the liquid storage mechanism of the present invention; Figure 5 This is a schematic diagram of the lifting mechanism of the present invention; Figure 6 This is a cross-sectional view of the lifting mechanism of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point A; Figure 8 For the present invention Figure 6 A schematic diagram of the structure at point B.

[0018] In the diagram: 1. Cabinet; 2. Base frame; 3. Liquid storage mechanism; 301. Side panel; 302. Second enclosure panel; 303. First base plate; 304. First adjusting rod; 305. Connecting pipe; 306. Inclined pipe; 307. Through groove; 4. First lifting rod; 5. First enclosure panel; 6. Lifting mechanism; 601. Connecting plate; 602. Pad; 603. Connecting rod; 604. Slide groove; 605. First slider; 606. Connecting rod; 607. First square frame; 608. Pointed rod; 609. Connecting ball; 610. First telescopic rod; 611. First filter screen; 612. Second slider; 613. Second square frame; 614. Second telescopic rod; 615. Second filter screen; 616. First through hole; 617. Second through hole; 618. Second adjusting rod; 619. Connecting plate; 620. Second base plate; 621. Connecting plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] like Figures 1-8 As shown, the present invention provides a technical solution: a three-phase grid-connected inverter cabinet, which is described below.

[0021] Includes cabinet 1, with a fan installed inside cabinet 1. The fan drives air to move dust towards the bottom of cabinet 1. Also includes: The base frame 2 is located below the cabinet 1, and there are four base frames 2; The first enclosure 5 is detachably installed inside the cabinet 1 and the slide 604 is opened in the first enclosure 5. There are four slides 604 and the first enclosure 5 is set in a square shape. The lifting mechanism 6 is installed on the first enclosure 5. The lifting mechanism 6 includes a first slider 605 and a second slider 612 connected by a telescopic column. The telescopic column has an automatic retraction function. The first slider 605 and the second slider 612 are slidably connected inside the slide groove 604. The first slider 605 is provided with a first filter screen 611 with a first through hole 616 on its outside. The second slider 612 is provided with a second filter screen 615 with a second through hole 617 on its outside. The first slider 605 and the second slider 612 are used to drive the first filter screen 611 and the second filter screen 615 to rise and fall inside the cabinet 1. The inner diameter of the second through hole 617 is slightly larger than the inner diameter of the first through hole 616. Liquid storage mechanism 3 is installed inside the base frame 2; The first lifting rod 4 is installed on the base frame 2. The first lifting rod 4 is set as an electric push rod. The first lifting rod 4 has multiple strokes, including the initial stroke when not started, the first stroke and the second stroke. The telescopic end of the first lifting rod 4 is connected to the first slider 605. The first lifting rod 4 drives the first slider 605, the telescopic column, the second slider 612, the first filter screen 611 and the second filter screen 615 to move in the vertical direction.

[0022] When the equipment is in use, the first lifting rod 4 is in its first stroke. The bottom of the cabinet 1 is connected to the outside through the first through hole 616 on the first filter screen 611 and the second through hole 617 on the second filter screen 615. The fan inside the cabinet 1 drives the air to move the dust to the bottom of the cabinet 1, promoting heat dissipation inside the cabinet 1. Adjusting the first lifting rod 4 to reciprocate between the first and second strokes causes the first lifting rod 4 to drive the first slider 605, telescopic column, second slider 612, first filter screen 611, and second filter screen 615 to reciprocate in the vertical direction, promoting the movement of dust on the first filter screen 611 and second filter screen 615. During the rainy season, the liquid storage mechanism 3 stores accumulated water. After the rain, adjusting the first lifting rod 4 to the second stroke causes the first lifting rod 4 to drive the lifting mechanism 6, which in turn drives the liquid storage mechanism 3 to drain the accumulated water.

[0023] By configuring a first lifting rod 4, a first slider 605, a telescopic column, a second slider 612, a first filter 611, and a second filter 615, the first lifting rod 4 controls the first slider 605, the telescopic column, the second slider 612, the first filter 611, and the second filter 615 to reciprocate in the vertical direction, promoting the movement of dust and impurities accumulated on the first filter 611 and the second filter 615. As the fan drives the gas to move the dust downwards, the gas also carries the dust and impurities that have detached from the first filter 611 and the second filter 615 downwards, thereby further clearing the first filter 611 and the second filter 615 and promoting heat dissipation inside the cabinet 1.

[0024] Liquid storage mechanism 3 includes: The side panel 301 installed on the outside of the base frame 2 and the mounting holes opened on the side panel 301 are fixed in position by screws, thereby reinforcing the position of the base frame 2, and further reinforcing the cabinet 1 connected to the base frame 2, reducing the shaking of the cabinet 1. The second enclosure 302 is provided outside the base frame 2 and the passage is opened in the second enclosure 302. The second enclosure 302 is set in a square shape. The first base plate 303 is slidably connected to the second enclosure 302; The first adjusting rod 304 is installed on the first base plate 303. The first adjusting rod 304 is configured as a rod whose length can be manually adjusted. The first adjusting rod 304 is connected to the lifting mechanism 6. The lifting mechanism 6 drives the first adjusting rod 304 and the first base plate 303 to move in the vertical direction. A connecting pipe 305 is installed outside the second enclosure 302, and the connecting pipe 305 is connected to the second enclosure 302 through a channel; An inclined tube 306 is disposed outside the connecting tube 305 and a through slot 307 is opened in the base frame 2. The inclined tube 306 is connected to the external storage box.

[0025] The working process of the liquid storage mechanism 3 storing accumulated water: Water entering the space between the four base frames 2 via the channel 307 or water seeping into the space between the four base frames 2 from the ground gradually enters the second enclosure 302 as the water level rises, and the water is positioned on the first base plate 303. When the water between the second enclosure 302 and the first base plate 303 reaches the height of the connecting pipe 305, it enters the connecting pipe 305 through the channel, then the inclined pipe 306, and finally the external storage box through the inclined pipe 306.

[0026] The process of using lifting mechanism 6 to drain water accumulated in liquid storage mechanism 3: After the rain, adjust the lifting mechanism 6. The lifting mechanism 6 controls the first adjusting rod 304 and the first base plate 303 to move upward. The first base plate 303 gradually moves to the bottom of the passage. The first base plate 303 drives the water to move upward as a whole, promoting the water to enter the connecting pipe 305 through the passage, enter the inclined pipe 306 through the connecting pipe 305, and then enter the external storage box through the inclined pipe 306.

[0027] By setting up a liquid storage mechanism 3 and using screws to reinforce the side plate 301 at the mounting holes, the base frame 2 and cabinet 1 are reinforced to prevent the cabinet 1 from shaking. The storage space enclosed by the second enclosure 302 and the first base plate 303 is used to store the water that enters between the four base frames 2 and floods into the storage space. As the water reaches the height of the channel, the water is discharged through the connecting pipe 305 and the inclined pipe 306. The remaining water is discharged after rain by the lifting mechanism 6 lifting the first base plate 303 to prevent rainwater from accumulating below the cabinet 1 and flooding into the cabinet 1, causing the cabinet 1 to become damp.

[0028] The lifting mechanism 6 also includes: A connecting plate 601 is provided on the first enclosure 5 and a pad 602 is installed on the connecting plate 601. The connecting plate 601 is set as an arc-shaped plate. The connecting plate 601 and the pad 602 are used to support the partition in the cabinet 1. The connecting rod 603 is installed on the connecting plate 601. The connecting rod 603 is configured in a cross shape, and the upper surface of the connecting rod 603 is configured in a pointed shape. The first frame 607 is connected to the first slider 605 via the connecting rod 606, and the first filter screen 611 is connected to the first telescopic rod 610. The pointed rod 608 installed in the first frame 607 and the connecting ball 609 installed on the pointed rod 608; The second frame 613 is connected to the second slider 612 via the connecting rod 606. The second frame 613 is connected to the second filter screen 615 via the second telescopic rod 614. An arc-shaped groove is provided on the second frame 613. The second adjusting rod 618 and the connecting plate 619 connected to the telescopic end of the second adjusting rod 618 are installed below the second filter screen 615. The second base plate 620 is located at the bottom of the connecting plate 619, and the docking plate 621 is installed below the second base plate 620. The docking plate 621 is connected to the first adjusting rod 304 and is adapted to the second surrounding plate 302. The second base plate 620 is configured such that the central area is flat and the surrounding area is curved, and the height gradually decreases along the distance from the central area.

[0029] The working process of using lifting mechanism 6 to control the lifting of the first filter screen 611 and the second filter screen 615: In the initial state, the telescopic column between the first slider 605 and the second slider 612, the first telescopic rod 610 between the first frame 607 and the first filter 611, and the second telescopic rod 614 between the second frame 613 and the second filter 615 are all in a stretched state under the action of gravity.

[0030] As the first lifting rod 4 reciprocates between its first and second strokes, it drives the first slider 605, telescopic column, second slider 612, first filter 611, and second filter 615 to reciprocate vertically, promoting the movement of dust on the first and second filters 611 and 615. The telescopic column, first telescopic rod 610, and second telescopic rod 614 switch between tension and compression. During this process, as the first filter 611 moves vertically, it repeatedly collides with the connecting ball 609 on the tip 608 and the second square frame 613 below the first filter 611, promoting the removal of impurities from the first filter 611. Simultaneously, the tip 608 and connecting ball 609 also provide some shielding, reducing the upward movement of debris and dust. As the fan drives the gas to move the dust and impurities downwards, it also moves the dust and impurities that have detached from the first filter 611 downwards. Meanwhile, as the second filter 615 moves vertically, its edge repeatedly collides with the second frame 613, promoting the removal of impurities from the second filter 615.

[0031] The process of using lifting mechanism 6 to drain the water accumulated in liquid storage mechanism 3: After the rain, the first lifting rod 4 is adjusted to the second stroke. The first lifting rod 4 drives the second slider 612, the second square frame 613, the second filter screen 615, the second adjusting rod 618, the connecting plate 619, the second base plate 620, the docking plate 621, and the second adjusting rod 618 to move upward. The second adjusting rod 618 drives the first base plate 303 to move upward. The first base plate 303 gradually moves to the bottom of the adjacent channel. The first base plate 303 drives the water to move upward as a whole, promoting the water to enter the connecting pipe 305 through the channel, enter the inclined pipe 306 through the connecting pipe 305, and then enter the external storage box through the inclined pipe 306.

[0032] By setting up the lifting mechanism 6, the first lifting rod 4 drives the first slider 605, the telescopic column, the second slider 612, the first filter screen 611, and the second filter screen 615 to reciprocate in the vertical direction. The working state of the telescopic column, the first telescopic rod 610, and the second telescopic rod 614 starts to switch between being stretched and being compressed. During the vertical movement of the first filter screen 611, it repeatedly collides with the connecting ball 609 on the tip rod 608 and the second square frame 613 below the first filter screen 611. The second filter screen 615 repeatedly collides with the second square frame 613, promoting the removal of impurities from the first filter screen 611 and the second filter screen 615.

[0033] By setting up a lifting mechanism 6 and a liquid storage mechanism 3, the first lifting rod 4 drives the second adjusting rod 618 and the base plate to move upward, promoting the remaining water on the base plate to enter the connecting pipe 305 through the channel to drain the water on the base plate. At the same time, the first lifting rod 4 drives the first slider 605, the second slider 612, the telescopic column, the first square frame 607, the first filter screen 611, the second square frame 613, and the second filter screen 615 to move upward. The telescopic column, the first telescopic rod 610, and the second telescopic rod 614 also deform, promoting the detachment of impurities in the first filter screen 611 and the second filter screen 615. At the same time, the fan in the cabinet 1 is in the starting state, promoting the impurities to fall downward onto the second base plate 620, and the dust and impurities slide off through the curved area of ​​the second base plate 620.

[0034] Working principle: When the equipment is in use, the first lifting rod 4 is in the first stroke. The bottom of the cabinet 1 is connected to the outside of the cabinet through the first through hole 616 on the first filter screen 611 and the second through hole 617 on the second filter screen 615. The fan inside the cabinet 1 drives the air to move the dust to the bottom of the cabinet 1, which promotes the heat dissipation inside the cabinet 1.

[0035] In the initial state, the telescopic column between the first slider 605 and the second slider 612, the first telescopic rod 610 between the first frame 607 and the first filter 611, and the second telescopic rod 614 between the second frame 613 and the second filter 615 are all in a stretched state under the action of gravity.

[0036] The first lifting rod 4 is periodically adjusted to reciprocate between its first and second strokes. The first lifting rod 4 drives the first slider 605, telescopic column, second slider 612, first filter 611, and second filter 615 to reciprocate vertically, promoting the movement of dust on the first and second filters 611 and 615. The telescopic column, first telescopic rod 610, and second telescopic rod 614 switch between being stretched and compressed. During this process, as the first filter 611 moves vertically, it repeatedly collides with the connecting ball 609 on the pointed rod 608 and the second square frame 613 below the first filter 611. This promotes the removal of impurities from the first filter 611. Simultaneously, the pointed rod 608 and the connecting ball 609 also provide some shielding, reducing the upward flight of debris and dust. As the fan drives the gas to move the dust and impurities downwards, it also moves the dust and impurities that have detached from the first filter 611 downwards. Meanwhile, as the second filter 615 moves vertically, its edge repeatedly collides with the second frame 613, promoting the removal of impurities from the second filter 615.

[0037] During the rainy season, the water is stored by the liquid storage mechanism 3. The water enters the space between the four base frames 2 through the channel 307 or from the ground. As the water level rises, it gradually enters the second enclosure 302 and sits on the first base plate 303. When the water between the second enclosure 302 and the first base plate 303 reaches the height of the connecting pipe 305, it enters the connecting pipe 305 through the channel, then the inclined pipe 306, and finally the external storage box through the inclined pipe 306.

[0038] After the rain, the first lifting rod 4 is adjusted to the second stroke. The first lifting rod 4 drives the second slider 612, the second square frame 613, the second filter screen 615, the second adjusting rod 618, the connecting plate 619, the second base plate 620, the docking plate 621, and the second adjusting rod 618 to move upward. The second adjusting rod 618 drives the first base plate 303 to move upward. The first base plate 303 gradually moves to the bottom of the adjacent channel. The first base plate 303 drives the water to move upward as a whole, promoting the water to enter the connecting pipe 305 through the channel, enter the inclined pipe 306 through the connecting pipe 305, and then enter the external storage box through the inclined pipe 306.

[0039] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A three-phase grid-connected inverter cabinet, comprising a cabinet body (1), characterized in that, Also includes: The base frame (2) is installed below the cabinet (1); The first enclosure (5) installed inside the cabinet (1) and the slide (604) opened in the first enclosure (5); The lifting mechanism (6) is provided on the first enclosure (5). The lifting mechanism (6) includes a first slider (605) and a second slider (612) connected by a telescopic column. The first slider (605) and the second slider (612) are slidably connected inside the slide groove (604). The first slider (605) is provided with a first filter screen (611) with a first through hole (616) on its outside. The second slider (612) is provided with a second filter screen (615) with a second through hole (617) on its outside. The first slider (605) and the second slider (612) are used to drive the first filter screen (611) and the second filter screen (615) to rise and fall inside the cabinet (1).

2. The three-phase grid-connected inverter cabinet according to claim 1, characterized in that: Also includes: Liquid storage mechanism (3) is installed inside the base frame (2); The first lifting rod (4) is installed on the base frame (2), and the telescopic end of the first lifting rod (4) is connected to the first slider (605).

3. The three-phase grid-connected inverter cabinet according to claim 2, characterized in that: The liquid storage mechanism (3) includes: Side plates (301) installed on the outside of the base frame (2) and mounting holes opened on the side plates (301); The first enclosure (5) and the second enclosure (302) are set outside the base frame (2) and the passage is opened in the second enclosure (302). Both the first enclosure (5) and the second enclosure (302) are set in a square shape.

4. The three-phase grid-connected inverter cabinet according to claim 3, characterized in that: The liquid storage mechanism (3) further includes: The first bottom plate (303) is slidably connected to the second enclosure plate (302); The first adjusting rod (304) is installed on the first base plate (303) and is connected to the lifting mechanism (6).

5. The three-phase grid-connected inverter cabinet according to claim 4, characterized in that: The liquid storage mechanism (3) further includes: A connecting pipe (305) is installed outside the second enclosure (302), and the connecting pipe (305) is connected to the second enclosure (302) through a channel; An inclined tube (306) is provided outside the connecting tube (305), and a through slot (307) is provided in the base frame (2).

6. The three-phase grid-connected inverter cabinet according to claim 5, characterized in that: The lifting mechanism (6) also includes: A connecting plate (601) disposed on the first enclosure (5) and a pad (602) mounted on the connecting plate (601); A connecting rod (603) is mounted on a connecting plate (601), the connecting rod (603) being configured in a cross shape.

7. The three-phase grid-connected inverter cabinet according to claim 6, characterized in that: The lifting mechanism (6) also includes: The first frame (607) is connected to the first slider (605) via the connecting rod (606), and the first frame (607) is connected to the first filter screen (611) via the first telescopic rod (610); The pointed rod (608) installed in the first frame (607) and the connecting ball (609) installed on the pointed rod (608).

8. The three-phase grid-connected inverter cabinet according to claim 7, characterized in that: The lifting mechanism (6) also includes: The second frame (613) is connected to the second slider (612) via the connecting rod (606). The second frame (613) is connected to the second filter screen (615) via the second telescopic rod (614). An arc groove is provided on the second frame (613).

9. The three-phase grid-connected inverter cabinet according to claim 8, characterized in that: The lifting mechanism (6) also includes: The second adjusting rod (618) and the connecting plate (619) connected to the telescopic end of the second adjusting rod (618) are installed below the second filter screen (615).

10. The three-phase grid-connected inverter cabinet according to claim 9, characterized in that: The lifting mechanism (6) also includes: The second base plate (620) is located at the bottom of the connecting plate (619) and the docking plate (621) is installed below the second base plate (620). The docking plate (621) is connected to the first adjusting rod (304) and is adapted to the second enclosure plate (302).

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