Switch equipment for offshore wind power

Abstract

The invention relates to switch equipment for offshore wind power, which belongs to the technical field of switch equipment and comprises an inlet box, a middle shell and an outlet box. The inlet box and the outlet box are arranged on the two sides of the middle shell correspondingly. The upper end of the inlet box is connected with an inlet protection cylinder, a switching cylinder is arranged in the middle shell, a first connector is installed in the inlet protection cylinder, a second connector is installed in the switching cylinder, and when the second connector and the first connector are connected in an inserted mode, current can be guided to be transmitted; the opening portion, facing the adapter cylinder, of the entering protection cylinder is a first butt joint portion, the opening portion, facing the entering protection cylinder, of the adapter cylinder is a second butt joint portion, a connecting port is preset in the second butt joint portion, and the connecting port is connected with the first butt joint portion in an embedded mode. Through cooperation of the positioning mechanism, the positioning opening, the limiting block and the multi-slope-edge structure, the multi-point locking and anti-shaking effects after butt joint are achieved, and connection loosening and current transmission interruption caused by offshore strong wind and sea wave vibration are effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, specifically a switchgear for offshore wind power. Background Technology

[0002] With the rapid development of the offshore wind power industry, offshore wind farms are typically built in near-shore or coastal areas, and their switchgear needs to be exposed to harsh marine environments with high salt spray, high humidity, and strong winds and waves for extended periods. Currently, the electrical connections between the inlet box and the central housing of offshore wind power switchgear mostly use traditional bolt fixing, plug-in, or flange connections. However, these methods present the following prominent technical problems in practical applications: The existing connection structure is prone to loosening or shaking under the influence of strong winds, waves and equipment vibrations at sea, leading to poor contact at the joints, or even interruption of current transmission or generation of electric arcs. This seriously affects the safe and stable operation of the offshore wind power system. Moreover, under long-term salt spray corrosion and humidity environment, salt particles can easily penetrate into the internal current transmission points, causing contact corrosion, increased contact resistance, decreased insulation performance and even short circuit faults, which greatly shortens the service life of the equipment and increases the frequency and cost of maintenance. In view of this, a switchgear for offshore wind power is proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in the existing technology: the existing connection structure is prone to loosening or shaking under the action of strong winds, waves and equipment vibration at sea, resulting in poor contact of the joints, or even interruption of current transmission or generation of electric arc, which seriously affects the safe and stable operation of the offshore wind power system. Moreover, under long-term salt spray corrosion and humidity environment, salt particles can easily penetrate into the internal current transmission points, causing contact corrosion, increased contact resistance, decreased insulation performance and even short circuit faults, which greatly shortens the service life of the equipment and increases the frequency and cost of maintenance.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a switchgear for offshore wind power, comprising an inlet box, a middle shell, and an outlet box; The inlet box and outlet box are respectively arranged on both sides of the central shell; The upper end of the inlet box is connected to an inlet protection cylinder, and the middle shell is provided with an adapter cylinder. The inlet protection cylinder is equipped with a connector one, and the adapter cylinder is equipped with a connector two. When connector two and connector one are plugged in, they can guide the transmission of current. The opening of the protective cylinder facing the adapter cylinder is the first docking part, and the opening of the adapter cylinder facing the protective cylinder is the second docking part. The second docking part has a pre-set connection port, and the connection port and the first docking part are fitted together. The first docking part is provided with a positioning mechanism for limiting the state of the second docking part.

[0006] As a preferred technical solution for a switchgear for offshore wind power, the entry protection cylinder has an annular cavity, the positioning mechanism is located in the annular cavity, the inner edge of the annular cavity has a guide hole, the guide hole communicates with the inner side of the docking part, the guide hole has an arc shape, the guide hole bends inward toward the axis of the docking part to prevent the ball from leaving the annular cavity, and multiple guide holes are configured.

[0007] As a preferred technical solution for a switchgear for offshore wind power, the positioning mechanism includes a fixed ring, retaining beads, a moving ring, and a return spring. The fixed ring is positioned on the inner edge of the annular cavity, and the moving ring is laterally positioned within the annular cavity. Multiple retaining beads are provided, and the retaining beads are located in guide holes. According to actual needs, a stop can be set at the opening of the guide hole facing the annular cavity to prevent the retaining beads from being vertically misaligned with the guide hole. A return spring is provided between the moving ring and the inner edge of the annular cavity, wherein the return spring is used to reset the moving ring when no force is applied.

[0008] As a preferred technical solution for switchgear used in offshore wind power, the inner edge of the connection port is provided with a positioning port, which is used to restrict the ball bearing. One side of the positioning port is provided with a slope, which is used to assist the ball bearing in leaving the positioning port. The opening of the connection port is provided with a slope, which is used to guide the ball bearing and ensure a smooth connection.

[0009] As a preferred technical solution for a switchgear for offshore wind power, a movable ring 1 rotates on the outer contour of the docking part 1. Restriction blocks are distributed at equal angles on the inner side of the movable ring 1. A slope 3 is preset on the side of the restriction block facing the movable ring. The slope 3 and the movable ring 1 together assist the part of the ball to extend out of the guide hole. At the same time, the restriction block restricts the ball in one direction after it enters the positioning port.

[0010] As a preferred technical solution for a switchgear for offshore wind power, one end of the docking part two is rotatably connected to a movable ring two, which is located on the outer periphery of the docking part two, and several square channels are preset on the inner side of the opening of the movable ring two.

[0011] As a preferred technical solution for a switchgear for offshore wind power, the outer periphery of the first movable ring is provided with a block, which slides in a square channel, and the two are matched in size. When the second movable ring rotates, it can drive the first movable ring to rotate through the square channel and the block.

[0012] As a preferred technical solution for a switchgear for offshore wind power, a storage groove is provided along the inner edge of the square channel, and a wedge-shaped block is provided on one side of the square, with the wedge-shaped block and the storage groove being fitted together.

[0013] As a preferred technical solution for a switchgear for offshore wind power, the movable ring two has a wedge block two that moves in a telescopic motion. The opposing surfaces of the wedge block two and the wedge block one are both inclined. When the wedge block one is inserted, it can change the position of the wedge block two in a linkage manner. A rubber ring plate is provided on the inner side of the movable ring two, wherein one end of the rubber ring plate is fixed to the movable ring two, and the curved end of the wedge block two is connected to the rubber ring plate.

[0014] As a preferred technical solution for a switchgear for offshore wind power, a reset structure is provided between the second movable ring and the second docking part, and a reset structure is also provided between the first docking part and the first movable ring. The reset structure includes a guide member, a guide channel, and a second reset spring. The guide member is located on one side of the second movable ring, and a guide channel is pre-set on the side of the second docking part facing the second movable ring. The guide member is movably located in the guide channel. A second reset spring is provided between the guide member and the guide channel to ensure the rotation range of the second movable ring and to reset it when no force is applied.

[0015] The beneficial effects of this invention are: 1. Through the cooperation of the positioning mechanism, positioning port, limiting block and multi-slope structure, multi-point locking and anti-sway effect are achieved after docking, effectively avoiding connection loosening and current transmission interruption caused by strong winds and waves at sea; 2. When the square block penetrates into the square channel, the linkage between wedge block one and wedge block two compresses the rubber ring plate, achieving dynamic sealing and tightening of the docking part. This effectively prevents salt spray and humidity carried by the sea breeze from invading the internal current transmission point, preventing corrosion-induced increased contact resistance, decreased insulation, or short circuit faults.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a rear view schematic diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection between the protective cylinder and the adapter cylinder of the present invention.

[0021] Figure 5 This is a schematic diagram of the positioning mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of wedge block one, wedge block two, and rubber ring plate of the present invention.

[0023] Figure 7 This is a schematic diagram of the active ring of the present invention.

[0024] Figure 8 This is a schematic diagram of the invention entering the protective cylinder.

[0025] Figure 9 This is a schematic diagram of the adapter tube of the present invention.

[0026] Figure 10 This is a schematic diagram of the reset structure of the present invention.

[0027] Figure 11 This is a schematic diagram of the force points and contact points around the bead of the present invention.

[0028] Reference numerals: 100, Inlet box; 101, Middle shell; 102, Outlet box; 103, Electrical control box; 200, Inlet protection cylinder; 201, Connector 1; 202, Docking part 1; 203, Annular cavity; 204, Guide hole; 300, Adapter cylinder; 301, Connector 2; 302, Docking part 2; 303, Connection port; 304, Positioning port; 305, Bevel 1; 306, Bevel 2; 400, Positioning mechanism; 4 01. Fixed ring; 402. Clamping bead; 403. Moving ring; 404. Return spring one; 500. Moving ring one; 501. Limiting block; 501a. Slope three; 502. Square block; 503. Wedge block one; 600. Moving ring two; 601. Square channel; 602. Storage slot; 603. Wedge block two; 604. Rubber ring plate; 700. Guide component; 701. Guide channel; 702. Return spring two; 800. Conducting assembly. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] This invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0031] Example, refer to Figures 1 to 5 A switchgear for offshore wind power includes an inlet box 100, a middle housing 101, and an outlet box 102. The inlet box 100 and the outlet box 102 are respectively arranged on both sides of the central shell 101; The upper end of the inlet box 100 is connected to the inlet protection cylinder 200. The middle shell 101 is provided with the adapter cylinder 300. The inlet protection cylinder 200 is provided with connector 1 201 and the adapter cylinder 300 is provided with connector 2 301. When connector 2 301 and connector 1 201 are connected, they can guide the transmission of current. The opening of the protective cylinder 200 towards the adapter cylinder 300 is the first docking part 202, and the opening of the adapter cylinder 300 towards the protective cylinder 200 is the second docking part 302. The second docking part 302 is provided with a connection port 303, and the connection port 303 and the first docking part 202 are fitted together.

[0032] Reference Figure 5 and Figure 8 The protective cylinder 200 has an annular cavity 203, and the positioning mechanism 400 is located in the annular cavity 203. The inner edge of the annular cavity 203 has a guide hole 204, which communicates with the inner side of the docking part 202. The guide hole 204 has an arc shape and bends inward toward the axis of the docking part 202 to prevent the retaining bead 402 from dislodging from the annular cavity 203. Multiple guide holes 204 are provided.

[0033] Reference Figure 5 and Figure 8The docking part 202 is provided with a positioning mechanism 400 for limiting the state of the docking part 302. The positioning mechanism 400 includes a fixed ring 401, a retaining bead 402, a moving ring 403, and a return spring 404. The fixed ring 401 is positioned on the inner edge of the annular cavity 203. The moving ring 403 is laterally disposed in the annular cavity 203. Multiple retaining beads 402 are provided, and the retaining beads 402 are located in the guide hole 204. According to actual needs, a blockage can be set at the opening position of the guide hole 204 facing the annular cavity 203 to prevent the retaining beads 402 from being vertically misaligned with the guide hole 204. A return spring 404 is provided between the moving ring 403 and the inner edge of the annular cavity 203, wherein the return spring 404 is used to reset the moving ring 403 when no force is applied.

[0034] Reference Figure 6 The inner edge of the connection port 303 is provided with a positioning port 304, which is used to restrict the locking bead 402. One side of the positioning port 304 is provided with a first slope 305, which is used to assist the locking bead 402 to leave the positioning port 304. The opening of the connection port 303 is provided with a second slope 306, which is used to guide the locking bead 402 and ensure a smooth connection.

[0035] Reference Figure 5 , Figure 6 , Figure 7 and Figure 9 The outer contour of the docking part 202 has a rotating movable ring 500. Restricting blocks 501 are distributed at equal angles on the inner side of the movable ring 500. A bevel 501a is pre-set on the side of the restricting block 501 facing the moving ring 403. The bevel 501a and the moving ring 403 together assist the portion of the retaining bead 402 to extend out of the guide hole 204. Simultaneously, the restricting block 501 restricts the retaining bead 402 in one direction after it enters the positioning port 304. The docking part 202... One end of the first ring 500 is rotatably connected to a second movable ring 600, which is located on the outer periphery of the second docking part 302. Several square channels 601 are preset on the inner side of the opening of the second movable ring 600. A block 502 is provided on the outer periphery of the first movable ring 500. The block 502 slides in the square channel 601, and the two are matched in size. When the second movable ring 600 rotates, it can drive the first movable ring 500 to rotate through the square channel 601 and the block 502.

[0036] Reference Figure 5 and Figure 6The square channel 601 has a storage groove 602 on its inner edge. A wedge block 503 is arranged on one side of the square block 502. The wedge block 503 and the storage groove 602 are fitted together. The movable ring 600 has a wedge block 603 that moves in a telescopic manner. The opposite surfaces of the wedge block 603 and the wedge block 503 are inclined. When the wedge block 503 is inserted, it can change the position of the wedge block 603 in a linkage manner. A rubber ring plate 604 is provided on the inner side of the movable ring 600. One end of the rubber ring plate 604 is fixed to the movable ring 600. The wedge block 603 and the bent end of the rubber ring plate 604 are connected.

[0037] Reference Figure 10 A reset structure is provided between the second movable ring 600 and the second docking part 302, and a reset structure is also provided between the first docking part 202 and the first movable ring 500. The reset structure includes a guide 700, a guide channel 701, and a reset spring 702. The guide 700 is disposed on one side of the second movable ring 600. The second docking part 302 has a guide channel 701 pre-set on the side facing the second movable ring 600. The guide 700 is movably located in the guide channel 701. A reset spring 702 is provided between the guide 700 and the guide channel 701 to ensure the rotation range of the second movable ring 600 and to reset it when no force is applied.

[0038] Reference Figure 11 Point A is the contact point between the locking bead 402 and the fixed ring 401; point B is the contact point between the locking bead 402 and the limiting block 501; point C is the contact point between the locking bead 402 and the slope 305; point D is the contact point between the locking bead 402 and the moving ring 403; E is the direction of movement of the locking bead 402 toward the moving ring 403; F is the direction of movement of the locking bead 402 toward the limiting block 501; and G is the direction of movement of the locking bead 402 toward the fixed ring 401.

[0039] This implementation achieves the following: The protective cylinder 200 and the adapter cylinder 300 are docked. First, the retaining bead 402 contacts the second slope 306. At this moment, the retaining bead 402 is subjected to a force in the E direction, causing the moving ring 403 to extend and retract within the annular cavity 203. The protruding position of the positioning port 304 is pushed back, ensuring smooth docking of the docking part 202 and the connecting port 303. Simultaneously, the block 502 slides within the square channel 601. After docking is completed, due to the retaining bead... The positions of 402 and positioning port 304 correspond. At this moment, the force of the return spring 404 is extended, causing the retaining ball 402 to move into the positioning port 304 through the moving ring 403 and the bevel 501a. The position is now limited because, in this state, further insertion has reached the deepest position. When withdrawing, the retaining ball 402 is subjected to directional forces G and F. Since the retaining ball 402 contacts the limiting block 501 and the fixed ring 401, the docking part 202 is also free from contact. The mechanism allows for retraction, preventing loosening after docking. When block 502 moves deep into square channel 601, wedge block 1 503 and wedge block 2 603 form a wedge structure, allowing one end of rubber ring plate 604 to press against docking part 1 202, thus ensuring a sealing effect. This design is suitable for coastal applications, preventing corrosion of internal current transmission points. When disassembling or maintaining the entire device, simply turn movable ring 2 600. Movable ring 2 600 rotates block 502 and movable ring 1 500 through square channel 601. Due to the intermittent arrangement of limiting block 501, limiting block 501 and locking bead 402 are misaligned. At this moment, the contact point of B and the force in the F direction are canceled. When the inlet protective cylinder 200 and adapter cylinder 300 are pulled apart, locking bead 402 can press the moving ring 403 to change position, thereby separating the inlet protective cylinder 200 and adapter cylinder 300.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A switchgear for offshore wind power, characterized in that: It includes an inlet box (100), a middle shell (101), and an outlet box (102). The inlet box (100) and outlet box (102) are respectively arranged on both sides of the middle shell (101), and an electrical control box (103) is provided at the edge of the middle shell (101). The upper end of the inlet box (100) is connected to an inlet protection cylinder (200), and an adapter cylinder (300) is provided in the middle shell (101). A connector one (201) is installed in the inlet protection cylinder (200), and a connector two (301) is installed in the adapter cylinder (300). The opening of the entry protective cylinder (200) towards the adapter cylinder (300) is the first docking part (202), and the opening of the adapter cylinder (300) towards the entry protective cylinder (200) is the second docking part (302). The second docking part (302) is provided with a connection port (303), and the connection port (303) and the first docking part (202) are fitted together. The docking part one (202) is provided with a positioning mechanism (400) for limiting the state of docking part two (302). The central housing (101) is provided with a conductive assembly (800), and the conductive assembly (800) is connected to the adapter cylinder (300).

2. The switchgear for offshore wind power according to claim 1, characterized in that: The protective cylinder (200) has an annular cavity (203) and the positioning mechanism (400) is located in the annular cavity (203). The inner edge of the annular cavity (203) has a guide hole (204) which communicates with the inner side of the docking part (202). The guide hole (204) has an arc shape and there are multiple guide holes (204).

3. The switchgear for offshore wind power according to claim 1, characterized in that: The positioning mechanism (400) includes a fixed ring (401), a retaining bead (402), a moving ring (403), and a return spring (404). The fixed ring (401) is positioned on the inner edge of the annular cavity (203). The moving ring (403) is laterally positioned in the annular cavity (203). Multiple retaining beads (402) are provided, and the retaining beads (402) are located in the guide hole (204). The return spring (404) is provided between the moving ring (403) and the inner edge of the annular cavity (203).

4. The switchgear for offshore wind power according to claim 1, characterized in that: The inner edge of the connection port (303) is provided with a positioning port (304), one side of the positioning port (304) is provided with a slope side one (305), and the opening of the connection port (303) is provided with a slope side two (306).

5. The switchgear for offshore wind power according to claim 1, characterized in that: The outer contour of the docking part (202) has a rotating movable ring (500), and the inner side of the movable ring (500) has a limiting block (501) distributed at equal angles. The limiting block (501) has a slope edge (501a) on the side facing the moving ring (403).

6. The switchgear for offshore wind power according to claim 1, characterized in that: One end of the docking part two (302) is rotatably connected to a movable ring two (600). The movable ring two (600) is located on the outer periphery of the docking part two (302). Several square channels (601) are preset on the inner side of the opening of the movable ring two (600).

7. The switchgear for offshore wind power according to claim 5, characterized in that: A block (502) is provided on the outer periphery of the active ring (500), the block (502) slides in the square channel (601), and a wedge block (503) is provided on one side of the block (502).

8. The switchgear for offshore wind power according to claim 6, characterized in that: The inner edge of the square channel (601) is provided with a storage groove (602), and the storage groove (602) and the wedge block (503) are fitted together.

9. The switchgear for offshore wind power according to claim 6, characterized in that: The movable ring two (600) has a wedge block two (603) that moves in a telescopic motion. The opposing surfaces of the wedge block two (603) and the wedge block one (503) are both inclined. A rubber ring plate (604) is provided on the inner side of the movable ring two (600). The bent ends of the wedge block two (603) and the rubber ring plate (604) are connected.

10. The switchgear for offshore wind power according to claim 6, characterized in that: A reset structure is provided between the second movable ring (600) and the second docking part (302), and a reset structure is also provided between the first docking part (202) and the first movable ring (500). The reset structure includes a guide (700), a guide channel (701) and a second reset spring (702). The guide (700) is provided on one side of the second movable ring (600). The second docking part (302) has a guide channel (701) on the side facing the second movable ring (600). The guide (700) is movably located in the guide channel (701). A second reset spring (702) is provided between the guide (700) and the guide channel (701).

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