Two-in and one-out 40.5 kV cable connection box with switch

Abstract

The invention discloses a two-inlet and one-outlet 40.5 kV cable connection box with switches, and relates to the technical field of power systems, the two-inlet and one-outlet 40.5 kV cable connection box comprises a shell and an inner cabinet, an inlet wire sensor I is mounted in the middle of the left side of the inner cabinet, an inlet wire switch I is mounted at the top of the left side of the inner cabinet, one end of an inlet wire connection bar I is connected with the inlet wire end of the inlet wire switch I, and the other end of the inlet wire connection bar I is supported on the inlet wire sensor I; the power supply is connected with an incoming cable I; a wire inlet sensor II is installed in the middle of the right side of the inner cabinet, a wire inlet switch II is installed on the top of the right side of the inner cabinet, one end of a wire inlet connecting bar II is connected with the wire inlet end of the wire inlet switch II, the other end of the wire inlet connecting bar II is supported on the wire inlet sensor II and connected with a wire inlet cable II, the wire outlet end of the wire inlet switch I and the wire outlet end of the wire inlet switch II are connected together through a busbar, and the busbar is connected with a wire outlet cable. The two-in and one-out 40.5. KV cable connection box with the switch has the advantages of being safe and reliable, and capable of preventing rainwater and dust from entering the 40.5. KV cable connection box.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to a 40.5kV cable connection box with a switch, featuring two inputs and one output. Background Technology

[0002] Wind and solar power generation are important directions for the country's green and low-carbon development, and related construction projects have seen significant investment growth. Wind and solar power generation differs considerably from conventional power generation methods in their technical characteristics. Wind and solar power plants are mostly located in remote areas far from densely populated areas, typically employing a scheme of distributing several small generating units across a region, which then form a large-scale power plant. Considering the technical and economic performance of power transmission, the power transmission method involves stepping up the voltage of the distributed small generating units to 40.5kV, and then transmitting the collected power from multiple circuits to a more distant 220kV substation.

[0003] 40.5kV cable junction boxes play a crucial role in large-scale wind and solar power plants, serving as cable relays for the collection and transmission of multi-circuit electrical energy or for long-distance transmission. However, existing 40.5kV cable junction boxes cannot guarantee personnel safety, exhibiting safety deficiencies. Furthermore, they lack protection against rainwater and dust ingress.

[0004] Therefore, there is an urgent need for a safe and reliable 40.5kV cable connection box with a switch, featuring two inlets and one outlet, that can prevent rainwater and dust from entering. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a 40.5kV cable connection box with a switch, featuring two inputs and one output.

[0006] The objective of this invention is achieved through the following technical solution: a 40.5kV cable connection box with a switch, featuring two inputs and one output. This invention has the following advantages: a safe and reliable 40.5kV cable connection box with two inlets and one outlet that can prevent rainwater and dust from entering. It includes an outer shell and an inner cabinet. The outer shell consists of an outer shell top cover, an outer shell housing, a base, and an outer shell door. An inlet sensor I is installed in the middle of the left side of the inner cabinet, and an inlet switch I is installed on the top left side of the inner cabinet. One end of the inlet connection bar I is connected to the inlet end of the inlet switch I, and the other end is supported on the inlet sensor I and connected to the inlet cable I. An incoming line sensor II is installed in the middle of the right side of the inner cabinet, and an incoming line switch II is installed at the top right side of the inner cabinet. One end of the incoming line connector II is connected to the incoming line terminal of the incoming line switch II, and the other end is supported on the incoming line sensor II and connected to the incoming line cable II. The busbar connects the outgoing line terminal of the incoming line switch I and the outgoing line terminal of the incoming line switch II together, and the busbar is connected to the outgoing line cable.

[0007] The base consists of an inlet base plate I, an inlet base plate II, and an outlet base plate spliced ​​together. Each of the inlet base plate I, inlet base plate II, and outlet base plate has a tower-shaped sealing ring. The inlet cable I, inlet cable II, and outlet cable respectively pass through a tower-shaped sealing ring and enter the inner cabinet. The three tower-shaped sealing rings are tightly fitted to the outer walls of the inlet cable I, inlet cable II, and outlet cable, respectively.

[0008] Both incoming line switch I and incoming line switch II are configured as "isolating switch + grounding switch". By operating incoming line switch I and incoming line switch II in different working states, the electrical connection combination between incoming line cable I, incoming line cable II and outgoing line cable can be realized, so that incoming line cable I and incoming line cable II can transmit electrical energy to outgoing line cable respectively, or incoming line cable I and incoming line cable II can transmit electrical energy to outgoing line cable together.

[0009] The inner cabinet is equipped with incoming line sensor I and incoming line sensor II. The energization status of incoming line cable I and incoming line cable II is detected by incoming line sensor I and incoming line sensor II, respectively. The incoming line sensor I and incoming line sensor II transmit the detected signals to the energization display on the inner cabinet door. The energization display shows the energization status of incoming line cable I and incoming line cable II. The energization display locks the electromagnetic lock on the cabinet door according to the energization status of incoming line cable I and incoming line cable II, thereby locking the inner cabinet door.

[0010] The incoming line switch I and incoming line switch II are fixed on the switch mounting beam, which is then horizontally mounted on the top angle steel of the inner cabinet.

[0011] Both incoming line switch I and incoming line switch II include a disconnecting switch, a grounding switch, and a switch operating mechanism. The switch operating mechanism includes a turntable, a connecting plate, a sector plate, and a lever drive plate connected in sequence. The switch operating mechanism can pull the disconnecting switch lever of the disconnecting switch and the grounding switch lever of the grounding switch to operate the disconnecting switch and the grounding switch to open and close the circuit.

[0012] The switch operating mechanism also includes a turntable positioning pin, a working status positioning handle, and a locking rod.

[0013] The outer shell door edge is bent to form a U-shaped edge, and all four sides of the outer shell door edge, including the top, bottom, left, and right sides, are U-shaped edge structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top sectional view of the present invention; Figure 3 for Figure 1 A schematic diagram of the outer shell door removed from the center; Figure 4 This is a front view of the switch operating mechanism of the present invention; Figure 5 This is a schematic diagram of the rotation of the switch operating mechanism of the present invention; Figure 6 for Figure 1 Enlarged view of part C in the image; In the picture: 1-Outer casing, 2-Inner cabinet, 3-Incoming line sensor I, 4-Switch operating mechanism, 5-Incoming line connection bar I, 6-Outer casing door, 7-Outer casing top cover, 8-Outer casing, 9-Incoming line switch I, 10-Switch mounting beam, 11-Inner cabinet top angle steel, 12-Busbar, 13-Incoming line switch II, 14-Isolating switch lever, 15-Grounding switch lever, 16-Incoming line connection bar II, 17-Incoming line sensor II, 18-Incoming line cable II, 19-Tower-shaped sealing ring; 21-Outgoing cable, 22-Base, 23-Incoming cable I, 24-Incoming base plate I, 26-Outgoing base plate, 27-Incoming base plate II, 28-Inner cabinet door, 29-Electromagnetic lock, 31-Powered display, 32-Turntable, 33-Turntable positioning pin, 34-Working status positioning handle, 35-Locking rod, 36-Pull rod drive plate, 37-Fan-shaped plate, 38-Connecting plate, 39-Outer shell door edge, 40-Elastic rubber pad, 41-U-shaped edge. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 1-6As shown, a 40.5kV cable connection box with two inlets and one outlet, including an outer shell 1 and an inner cabinet 2, comprises an outer shell 1, an outer shell 8, a base 22, and an outer shell door 6. An inlet sensor I3 is installed in the middle of the left side of the inner cabinet 2, and an inlet switch I9 is ​​installed on the top left side of the inner cabinet 2. One end of an inlet connector I5 is connected to the inlet terminal of the inlet switch I9, and the other end is supported on the inlet sensor I3 and connected to the inlet cable I23. An inlet sensor II17 is installed in the middle of the right side of the inner cabinet 2, and an inlet switch II13 is installed on the top right side of the inner cabinet 2. One end of an inlet connector II16 is connected to the inlet terminal of the inlet switch II13, and the other end is supported on the inlet sensor II17 and connected to the inlet cable II18. A busbar 12 connects the outlet terminals of the inlet switch I9 and II13 together, and the busbar 12 is connected to the outlet cable 21.

[0016] The base 22 is composed of an inlet base plate I24, an inlet base plate II27, and an outlet base plate 26 spliced ​​together. Each of the inlet base plate I24, inlet base plate II27, and outlet base plate 26 has a tower-shaped sealing ring 19. The inlet cable I23, inlet cable II18, and outlet cable 21 pass through a tower-shaped sealing ring 19 and enter the inner cabinet 2. The three tower-shaped sealing rings 19 are tightly fitted to the outer walls of the inlet cable I23, inlet cable II18, and outlet cable 21 to reduce the gaps when the cables pass through the tower-shaped sealing rings 19. This achieves the purpose of blocking external foreign objects, humid gases, etc. from entering the inner cabinet 2, thereby ensuring that the electrical insulation level of the inner cabinet 2 is not affected.

[0017] Both incoming line switches I9 and II13 are configured as "isolating switches + grounding switches". By operating incoming line switches I9 and II13 in different working states, electrical connection combinations can be achieved between incoming cable I23, incoming cable II18 and outgoing cable 21, so that incoming cable I23 and incoming cable II18 can transmit electrical energy to outgoing cable 21 respectively, or incoming cable I23 and incoming cable II18 can transmit electrical energy to outgoing cable 21 together.

[0018] The inner cabinet 2 is equipped with incoming line sensor I3 and incoming line sensor II17. The energized status of incoming line cable I23 and incoming line cable II18 is detected by incoming line sensor I3 and incoming line sensor II17, respectively. The incoming line sensor I3 and incoming line sensor II17 transmit the detected signals to the energized display 31 on the inner cabinet door 28. The energized display 31 displays the energized status of incoming line cable I23 and incoming line cable II18. Based on the energized status of incoming line cable I23 and incoming line cable II18, the energized display 31 locks the electromagnetic lock 29 on the cabinet door 28 to lock the inner cabinet door 28, thereby preventing personnel from entering the inner cabinet 2 and avoiding electric shock accidents. It has the characteristics of safety and reliability.

[0019] The incoming line switches I9 and II13 are fixed on the switch mounting beam 10, which is then horizontally mounted on the angle steel 11 at the top of the inner cabinet. Both incoming line switches I9 and II13 include a disconnecting switch, a grounding switch, and a switch operating mechanism 4. The switch operating mechanism 4 includes a turntable 32, a connecting plate 38, a sector plate 37, and a pull rod drive plate 36 connected in sequence. The switch operating mechanism 4 can pull the disconnecting switch pull rod 14 of the disconnecting switch and the grounding switch pull rod 15 of the grounding switch to operate the disconnecting and grounding switches. When the operator rotates the turntable 32 clockwise as indicated by the arrow, the turntable 32 rotates, causing the connecting plate 38 to move to the right as indicated by the arrow. The connecting plate 38 then drives the sector plate 37 to rotate counterclockwise. Since the sector plate 37 and the pull rod drive plate 36 are fixed as a single unit, the disconnecting switch pull rod 14 is driven to move to the lower right as indicated by the arrow, causing the disconnecting switch to open. This makes operation more effortless and convenient.

[0020] The switch operating mechanism 4 also includes a turntable positioning pin 33, a working state positioning handle 34, and a locking rod 35. When the line is electrically connected, the disconnecting switch is in the closed position, the grounding switch is in the open position, the position of the turntable 32 limits the position of the turntable positioning pin 33, and thus limits the working state positioning handle 34 to the vertical "working" position. At this time, the locking rod 35 is in the extended position, locking the inner cabinet door 28. When the line is electrically disconnected, the disconnecting switch is in the open position, the grounding switch is in the closed position, the position of the turntable 32 adjusts the position of the turntable positioning pin 33, and then the working state positioning handle 34 can be rotated to the left to the "maintenance" position. At this time, the locking rod 35 is in the retracted position, releasing the lock of the inner cabinet door 28, allowing the inner cabinet door 28 to be opened, and maintenance personnel can enter the inner cabinet 2.

[0021] The outer casing door edge 39 is bent to form a U-shaped edge 41. All four sides of the outer casing door edge 39—top, bottom, left, and right—are U-shaped edge 41 structures. Because all four sides of the outer casing door edge 39 are U-shaped edge 41 structures, the four U-shaped edges 41 form a ring-shaped rainproof structure for the outer casing door edge 39, effectively preventing rainwater from entering the outer casing 1. An elastic rubber pad 40 is attached to the inner side of the U-shaped edge 41. When the outer casing door 6 is closed, the inner edge of the outer casing door 6 is tightly pressed against the elastic rubber pad 40, eliminating the gap between the outer casing door 6 and the outer casing door edge 39, thus preventing external dust from entering.

[0022] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A 40.5kV cable connection box with a switch, featuring two inputs and one output, characterized in that: It includes an outer shell (1) and an inner cabinet (2). The outer shell (1) consists of an outer shell top cover (7), an outer shell housing (8), a base (22), and an outer shell door (6). An incoming line sensor I (3) is installed in the middle of the left side of the inner cabinet (2). An incoming line switch I (9) is installed on the top of the left side of the inner cabinet (2). One end of the incoming line connector I (5) is connected to the incoming line end of the incoming line switch I (9), and the other end is supported on the incoming line sensor I (3) and connected to the incoming line cable I (23). The inner cabinet (2) is equipped with an incoming line sensor II (17) in the middle of the right side and an incoming line switch II (13) in the top right side. One end of the incoming line connector II (16) is connected to the incoming line end of the incoming line switch II (13), and the other end is supported on the incoming line sensor II (17) and connected to the incoming line cable II (18). The busbar (12) connects the outgoing line end of the incoming line switch I (9) with the outgoing line end of the incoming line switch II (13). The busbar (12) is connected to the outgoing line cable (21).

2. The 40.5kV cable connection box with two inputs and one output, equipped with a switch, as described in claim 1, is characterized in that: The base (22) is composed of an inlet base plate I (24), an inlet base plate II (27), and an outlet base plate (26) spliced ​​together. Each of the inlet base plate I (24), the inlet base plate II (27), and the outlet base plate (26) has a tower-shaped sealing ring (19). The inlet cable I (23), the inlet cable II (18), and the outlet cable (21) pass through a tower-shaped sealing ring (19) and enter the inner cabinet (2). The three tower-shaped sealing rings (19) are tightly fitted to the outer walls of the inlet cable I (23), the inlet cable II (18), and the outlet cable (21).

3. The 40.5kV cable connection box with two inputs and one output, equipped with a switch, as described in claim 1, is characterized in that: Both incoming line switch I (9) and incoming line switch II (13) are configured as "isolating switch + grounding switch". By operating the different working states of incoming line switch I (9) and incoming line switch II (13), the electrical connection combination between incoming cable I (23), incoming cable II (18) and outgoing cable (21) can be realized, so that incoming cable I (23) and incoming cable II (18) respectively transmit electrical energy to outgoing cable (21), or incoming cable I (23) and incoming cable II (18) together transmit electrical energy to outgoing cable (21).

4. A 40.5kV cable connection box with a switch, featuring two inputs and one output, as described in claim 1, characterized in that: The inner cabinet (2) is equipped with an incoming line sensor I (3) and an incoming line sensor II (17). The energized status of incoming line cable I (23) and incoming line cable II (18) is detected by the incoming line sensor I (3) and the incoming line sensor II (17), respectively. The incoming line sensor I (3) and the incoming line sensor II (17) transmit the detected signals to the energized display (31) on the inner cabinet door (28). The energized display (31) displays the energized status of incoming line cable I (23) and incoming line cable II (18). The energized display (31) locks the electromagnetic lock (29) on the cabinet door (28) according to the energized status of incoming line cable I (23) and incoming line cable II (18) to lock the inner cabinet door (28).

5. A 40.5kV cable connection box with a switch, featuring two inputs and one output, as described in claim 1, characterized in that: The incoming line switch I (9) and incoming line switch II (13) are fixed on the switch mounting beam (10), and the switch mounting beam (10) is then horizontally mounted on the top angle steel (11) of the inner cabinet.

6. A 40.5kV cable connection box with a switch and two inputs and one output as described in claim 1, characterized in that: Both the incoming line switch I (9) and the incoming line switch II (13) include a disconnecting switch, a grounding switch and a switch operating mechanism (4). The switch operating mechanism (4) includes a turntable (32), a connecting plate (38), a sector plate (37) and a pull rod drive plate (36) connected in sequence. The switch operating mechanism (4) can pull the disconnecting switch pull rod (14) of the disconnecting switch and the grounding switch pull rod (15) of the grounding switch to operate the disconnecting switch and the grounding switch to open and close.

7. A 40.5kV cable connection box with a switch, featuring two inputs and one output, as described in claim 1, characterized in that: The switch operating mechanism (4) also includes a turntable positioning pin (33), a working state positioning handle (34), and a locking rod (35).

8. A 40.5kV cable connection box with a switch, featuring two inputs and one output, as described in claim 1, characterized in that: The outer shell door edge (39) is bent to form a U-shaped edge (41), and the four sides of the outer shell door edge (39) are all U-shaped edge (41) structures.

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