Sealing mechanism ring main unit interlocking device

Abstract

The utility model provides a ring main unit interlocking device with a sealing mechanism, which relates to the technical field of ring main units, and comprises a circuit breaker mechanism, a circuit breaker interlocking plate and an isolation interlocking plate, and the front side of the circuit breaker mechanism is provided with a circuit breaker on-off indicating shaft, a circuit breaker closing button and an isolation switch. The circuit breaker interlocking plate is elastically and movably arranged on the circuit breaker mechanism between the circuit breaker on-off indicating shaft and the isolating switch; according to the utility model, the circuit breaker interlocking plate and the isolation interlocking plate which are elastically movable are additionally arranged on the circuit breaker structure, when the isolation switch is in a switching-on state, the isolation interlocking plate elastically moves downwards, so that a switching-on button of the circuit breaker can be operated, and when the isolation switch is rotated to be in a switching-off state, the bulge jacks up an accessory of the isolation interlocking plate; the isolation interlocking plate is jacked up to be inserted into a groove in the outer side of the circuit breaker closing button, the circuit breaker closing button is locked and prevented from being pressed, and the function of preventing mistaken opening and closing of the circuit breaker is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a sealing mechanism ring main unit interlocking device. Background Technology

[0002] The coastal climate and salt spray conditions are corrosive to switchgear. Currently, the gas boxes of ring main units are welded from stainless steel with an IP rating of IP67. Salt spray has little impact on the gas boxes, but the mechanism rooms are outside the gas boxes. The constant salt spray environment is very detrimental to ordinary mechanisms.

[0003] Therefore, in high-salt and high-humidity environments, sealed ring main units are used, and it is necessary to design a mechanism interlocking device suitable for sealed ring main units to meet the five-proof interlocking requirements, namely, preventing accidental opening and closing of circuit breakers, and preventing opening and closing of disconnecting switches under load. Therefore, this utility model proposes an interlocking device for sealed ring main units to solve the problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned issues, this utility model proposes a sealing mechanism ring main unit interlocking device. This sealing mechanism ring main unit interlocking device meets the five electrical protection interlocking requirements of the mechanism, prevents injury to operators due to misoperation, reduces the accident rate of the ring main unit, and ensures the safe and stable operation of the ring main unit.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a sealing mechanism ring main unit interlocking device, including a circuit breaker mechanism, a circuit breaker interlocking plate and an isolation interlocking plate. The front side of the circuit breaker mechanism is provided with a circuit breaker closing / opening indicator shaft, a circuit breaker closing button and an isolation switch. The circuit breaker interlocking plate is elastically and movably disposed on the circuit breaker mechanism at a position between the circuit breaker closing / opening indicator shaft and the isolation switch, and the upper end of the circuit breaker interlocking plate abuts against the side of the circuit breaker closing / opening indicator shaft. The lower end of the circuit breaker interlocking plate is used to lock onto the front side of the isolation switch.

[0006] The isolation interlock plate is flexibly and movable on the circuit breaker mechanism at the position between the circuit breaker closing button and the disconnecting switch. The lower end of the isolation interlock plate is provided with an isolation interlock plate accessory, and the lower end of the isolation interlock plate accessory abuts against the outside of the disconnecting switch. The upper end of the isolation interlock plate is adapted to the outer groove of the circuit breaker closing button.

[0007] A further improvement is that: the upper and lower ends of the circuit breaker interlocking plate are provided with first guide grooves, and the circuit breaker mechanism at the position of the first guide groove is provided with a first stop, and the first guide groove and the first stop are movably adapted to each other.

[0008] A further improvement is that a first interlocking spring is provided on the circuit breaker mechanism at the position of the circuit breaker interlocking plate, and the first interlocking spring is connected to the circuit breaker interlocking plate and pulls the circuit breaker interlocking plate upward.

[0009] A further improvement is that a second guide groove is provided above the interior of the isolation interlocking plate, and a second stop is provided on the circuit breaker mechanism at the position of the second guide groove, with the second guide groove and the second stop being movably adapted to each other.

[0010] A further improvement is that an isolation interlocking bracket is provided at the middle position of the front side of the circuit breaker mechanism, and a second interlocking spring is connected to the isolation interlocking bracket.

[0011] A further improvement is that a connecting hole is provided at the lower end of one end of the isolation interlocking plate, the upper end of the second interlocking spring is connected to the connecting hole, and the second interlocking spring pulls the isolation interlocking plate downward.

[0012] A further improvement is that the isolation interlock bracket has a guide opening inside, through which the isolation interlock plate accessory moves.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model adds a flexible circuit breaker interlocking plate and an isolating interlocking plate to the circuit breaker structure. When the isolating switch is in the closed state, the isolating interlocking plate moves elastically downward, allowing the circuit breaker closing button to be operated. When the isolating switch is rotated to the open state, the protrusion lifts the isolating interlocking plate accessory, and the isolating interlocking plate is lifted and inserted into the groove on the outside of the circuit breaker closing button, locking the circuit breaker closing button to prevent it from being pressed, thus realizing the function of preventing accidental opening and closing of the circuit breaker.

[0015] 2. When the circuit breaker switch is in the open position, the circuit breaker interlocking plate moves elastically upward, allowing the disconnecting switch to be closed. When the circuit breaker switch is in the closed position, the circuit breaker open / close indicator shaft rotates, and the protrusion presses down the circuit breaker interlocking plate, locking the disconnecting switch's operation function and preventing the disconnecting switch from being opened or closed under load.

[0016] 3. This utility model meets the five-proof interlocking requirements of the electrical system, prevents injury to operators due to misoperation, reduces the accident rate of the ring main unit, and ensures the safe and stable operation of the ring main unit. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a side view of the present invention.

[0019] The components include: 1. Circuit breaker mechanism; 2. Circuit breaker interlock plate; 3. Isolation interlock plate; 4. Circuit breaker open / close indicator shaft; 5. Circuit breaker closing button; 6. Disconnecting switch; 7. Isolation interlock plate accessories; 8. First guide groove; 9. First stop; 10. First interlocking spring; 11. Second guide groove; 12. Second stop; 13. Isolation interlocking bracket; 14. Second interlocking spring; 15. Connecting hole. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] Example 1

[0022] according to Figure 1 , 2 As shown, this embodiment proposes a sealing mechanism ring main unit interlocking device, including a circuit breaker mechanism 1, a circuit breaker interlocking plate 2, and an isolation interlocking plate 3. The front side of the circuit breaker mechanism 1 is provided with a circuit breaker closing / opening indicator shaft 4, a circuit breaker closing button 5, and an isolation switch 6. The circuit breaker interlocking plate 2 is elastically movably disposed on the circuit breaker mechanism 1 at a position between the circuit breaker closing / opening indicator shaft 4 and the isolation switch 6, and the upper end of the circuit breaker interlocking plate 2 abuts against the side of the circuit breaker closing / opening indicator shaft 4. The lower end of the circuit breaker interlocking plate 2 is used to lock onto the front side of the isolation switch 6.

[0023] The isolation interlocking plate 3 is flexibly and movable on the circuit breaker mechanism 1 located between the circuit breaker closing button 5 and the disconnecting switch 6. The lower end of the isolation interlocking plate 3 is provided with an isolation interlocking plate attachment 7, and the lower end of the isolation interlocking plate attachment 7 abuts against the outside of the disconnecting switch 6. The upper end of the isolation interlocking plate 3 is adapted to the outer groove of the circuit breaker closing button 5. In use, the circuit breaker interlocking plate 2 and the isolation interlocking plate 3 are added to the circuit breaker structure. When the disconnecting switch 6 is in the closed state, the isolation interlocking plate 3 flexibly moves downward, allowing the circuit breaker closing button 5 to be operated. When the disconnecting switch 6 is rotated to the open state, the protrusion lifts the isolation interlocking plate attachment 7, and the isolation interlocking plate 3 is inserted into the outer groove of the circuit breaker closing button 5, locking the circuit breaker closing button 5 to prevent pressing and thus preventing accidental opening and closing of the circuit breaker. Furthermore, when the circuit breaker switch is in the open position, the circuit breaker interlock plate 2 moves upward elastically, which allows the disconnector switch 6 to be closed. When the circuit breaker switch is in the closed position, the circuit breaker open / close indicator shaft 4 rotates, and the protrusion presses down the circuit breaker interlock plate 2, locking the operation function of the disconnector switch 6 and preventing the disconnector switch 6 from being opened or closed under load.

[0024] The circuit breaker interlocking plate 2 has a first guide groove 8 at both its upper and lower ends. A first stop 9 is provided on the circuit breaker mechanism 1 at the position of the first guide groove 8, and the first guide groove 8 and the first stop 9 are movably adapted to each other. A first interlocking spring 10 is provided on the circuit breaker mechanism 1 at the position of the circuit breaker interlocking plate 2, and the first interlocking spring 10 is connected to the circuit breaker interlocking plate 2 and pulls the circuit breaker interlocking plate 2 upward. Through the movable adaptation of the first guide groove 8 and the first stop 9, the circuit breaker interlocking plate 2 can move stably. When the circuit breaker switch is in the open state, the circuit breaker interlocking plate 2 elastically moves upward, allowing the disconnecting switch 6 to be closed.

[0025] Example 2

[0026] according to Figure 1 , 2 As shown, this embodiment proposes a sealing mechanism ring main unit interlocking device, including a circuit breaker mechanism 1, a circuit breaker interlocking plate 2, and an isolation interlocking plate 3. The front side of the circuit breaker mechanism 1 is provided with a circuit breaker closing / opening indicator shaft 4, a circuit breaker closing button 5, and an isolation switch 6. The circuit breaker interlocking plate 2 is elastically movably disposed on the circuit breaker mechanism 1 at a position between the circuit breaker closing / opening indicator shaft 4 and the isolation switch 6, and the upper end of the circuit breaker interlocking plate 2 abuts against the side of the circuit breaker closing / opening indicator shaft 4. The lower end of the circuit breaker interlocking plate 2 is used to lock onto the front side of the isolation switch 6.

[0027] The isolation interlocking plate 3 is flexibly and movable on the circuit breaker mechanism 1 located between the circuit breaker closing button 5 and the disconnecting switch 6. The lower end of the isolation interlocking plate 3 is provided with an isolation interlocking plate attachment 7, and the lower end of the isolation interlocking plate attachment 7 abuts against the outside of the disconnecting switch 6. The upper end of the isolation interlocking plate 3 is adapted to the outer groove of the circuit breaker closing button 5. In use, the circuit breaker interlocking plate 2 and the isolation interlocking plate 3 are added to the circuit breaker structure. When the disconnecting switch 6 is in the closed state, the isolation interlocking plate 3 flexibly moves downward, allowing the circuit breaker closing button 5 to be operated. When the disconnecting switch 6 is rotated to the open state, the protrusion lifts the isolation interlocking plate attachment 7, and the isolation interlocking plate 3 is inserted into the outer groove of the circuit breaker closing button 5, locking the circuit breaker closing button 5 to prevent pressing and thus preventing accidental opening and closing of the circuit breaker. Furthermore, when the circuit breaker switch is in the open position, the circuit breaker interlock plate 2 moves upward elastically, which allows the disconnector switch 6 to be closed. When the circuit breaker switch is in the closed position, the circuit breaker open / close indicator shaft 4 rotates, and the protrusion presses down the circuit breaker interlock plate 2, locking the operation function of the disconnector switch 6 and preventing the disconnector switch 6 from being opened or closed under load.

[0028] The upper part of the isolation interlock plate 3 is provided with a second guide groove 11, and the circuit breaker mechanism 1 at the position of the second guide groove 11 is provided with a second stop 12, the second guide groove 11 and the second stop 12 being movably adapted. An isolation interlock bracket 13 is provided at the middle position of the front side of the circuit breaker mechanism 1, and a second interlock spring 14 is connected to the isolation interlock bracket 13. A connecting hole 15 is provided at the lower part of one end of the isolation interlock plate 3, the upper end of the second interlock spring 14 is connected to the connecting hole 15, and the second interlock spring 14 pulls the isolation interlock plate 3 downward. A guide opening is provided inside the isolation interlock bracket 13, and the isolation interlock plate accessory 7 moves movably through the guide opening. Through the active adaptation of the second guide groove 11 and the second stop 12, and the active passage of the isolation interlock plate accessory 7 through the guide opening, the isolation interlock plate 3 can move stably. The second interlock spring 14 can pull the isolation interlock plate 3 downward. When the disconnect switch 6 is in the closed state, the isolation interlock plate 3 moves downward elastically, and the circuit breaker closing button 5 can be operated.

[0029] The sealing mechanism of the ring main unit interlocking device adds a flexible circuit breaker interlocking plate 2 and an isolating interlocking plate 3 to the circuit breaker structure. When the isolating switch 6 is in the closed position, the isolating interlocking plate 3 moves downward elastically, allowing operation of the circuit breaker closing button 5. When the isolating switch 6 is in the open position, the protrusion lifts the isolating interlocking plate accessory 7, and the isolating interlocking plate 3 is inserted into the outer groove of the circuit breaker closing button 5, locking the circuit breaker closing button 5 to prevent pressing and thus preventing accidental opening and closing of the circuit breaker. Furthermore, when the circuit breaker is in the open position, the circuit breaker interlocking plate 2 moves upward elastically, allowing operation of the isolating switch 6 to close. When the circuit breaker is in the closed position, the circuit breaker open / close indicator shaft 4 rotates, and the protrusion presses down the circuit breaker interlocking plate 2, locking the operation of the isolating switch 6 and preventing opening and closing of the isolating switch 6 under load. It meets the five-proof interlocking requirements of the electrical system, prevents injury to operators due to misoperation, reduces the accident rate of the ring main unit, and ensures the safe and stable operation of the ring main unit.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing mechanism ring main unit interlocking device, comprising a circuit breaker mechanism (1), a circuit breaker interlocking plate (2), and an isolation interlocking plate (3), characterized in that: The circuit breaker mechanism (1) is provided with a circuit breaker closing / opening indicator shaft (4), a circuit breaker closing button (5) and a disconnecting switch (6) on the front side. The circuit breaker interlock plate (2) is elastically and movably mounted on the circuit breaker mechanism (1) at a position between the circuit breaker closing / opening indicator shaft (4) and the disconnecting switch (6). The upper end of the circuit breaker interlock plate (2) abuts against the side of the circuit breaker closing / opening indicator shaft (4), and the lower end of the circuit breaker interlock plate (2) is used to lock onto the front side of the disconnecting switch (6). The isolation interlock plate (3) is flexibly and movable on the circuit breaker mechanism (1) between the circuit breaker closing button (5) and the disconnecting switch (6). The lower end of the isolation interlock plate (3) is provided with an isolation interlock plate accessory (7), and the lower end of the isolation interlock plate accessory (7) abuts against the outside of the disconnecting switch (6). The upper end of the isolation interlock plate (3) is adapted to the outer groove of the circuit breaker closing button (5).

2. The sealing mechanism ring main unit interlocking device according to claim 1, characterized in that: The circuit breaker interlock plate (2) is provided with a first guide groove (8) at both the upper and lower ends. The circuit breaker mechanism (1) at the position of the first guide groove (8) is provided with a first stop (9). The first guide groove (8) and the first stop (9) are movably adapted to each other.

3. The sealing mechanism ring main unit interlocking device according to claim 2, characterized in that: A first interlocking spring (10) is provided on the circuit breaker mechanism (1) at the position of the circuit breaker interlocking plate (2), and the first interlocking spring (10) is connected to the circuit breaker interlocking plate (2) and pulls the circuit breaker interlocking plate (2) upward.

4. The sealing mechanism ring main unit interlocking device according to claim 1, characterized in that: The upper part of the isolation interlock plate (3) is provided with a second guide groove (11), and the circuit breaker mechanism (1) at the position of the second guide groove (11) is provided with a second stop (12), and the second guide groove (11) and the second stop (12) are movably adapted to each other.

5. The sealing mechanism ring main unit interlocking device according to claim 4, characterized in that: The circuit breaker mechanism (1) is provided with an isolation interlock bracket (13) at the middle position on the front side, and a second interlock spring (14) is connected to the isolation interlock bracket (13).

6. The sealing mechanism ring main unit interlocking device according to claim 5, characterized in that: The isolation interlock plate (3) has a connection hole (15) at one end below it. The upper end of the second interlock spring (14) is connected to the connection hole (15), and the second interlock spring (14) pulls the isolation interlock plate (3) downward.

7. The sealing mechanism ring main unit interlocking device according to claim 6, characterized in that: The isolation interlock bracket (13) has a guide opening inside, through which the isolation interlock plate accessory (7) moves.

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