Opening coil tripping structure for vacuum circuit breaker

Abstract

The utility model belongs to an opening coil tripping structure for a vacuum circuit breaker in the technical field of switch cabinets. A tripping half shaft (5) is mounted on the circuit breaker body (7), a coil mounting support (1) is mounted on the circuit breaker body (7) above the tripping half shaft (5), a first opening coil (2) and a second opening coil (3) are mounted on the coil mounting support (1), the first opening coil (2) is connected with the tripping half shaft (5) through a first opening bending plate (4-2), and the second opening coil (3) is connected with the tripping half shaft (5) through a second opening bending plate (4-1). According to the opening coil tripping structure for the vacuum circuit breaker, the installation structure is simplified, the cost is reduced, safety accidents caused by the fact that the opening coil of the circuit breaker fails and cannot be remotely opened are effectively prevented, and the equipment safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch cabinets, and more specifically relates to a tripping structure of a tripping coil for a vacuum circuit breaker. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. With increasing awareness of power grid safety, there is a growing demand to prevent safety incidents caused by the inability to remotely trip circuit breakers. However, current circuit breakers only have a single trip circuit. If a fault occurs, remote tripping becomes impossible, potentially leading to safety incidents.

[0003] The prior art includes a technology titled "A Multi-Station Indoor High-Voltage Vacuum Circuit Breaker" with publication number "CN212750797U." This technology provides a multi-station indoor high-voltage vacuum circuit breaker, comprising an operating area, multiple stations, and a linkage mechanism. Each station includes a disconnector, a vacuum circuit breaker, and a grounding switch. The disconnector includes a visible disconnect, a linkage-designed disconnecting contact, an insulating connecting rod, a first disconnecting shaft, a second disconnecting shaft, an disconnecting interlocking limit plate, an disconnecting interlocking slider, and a connecting rod. The vacuum circuit breaker includes a trip coil, a manual opening and closing button, a trip plate, a connecting plate, a closing latch, a circuit breaker closing cam, a closing crank arm, a first transmission shaft, a second transmission shaft, a transmission crank arm, a support pin, an insulating pull rod, and a vacuum interrupter. The grounding switch includes a grounding operating shaft, a grounding interlocking limit plate, a grounding knife, and a copper busbar for connecting the outgoing line. The present utility model integrates the disconnector, vacuum circuit breaker, and grounding switch into a single design, saving space and manufacturing costs while providing reliable and stable operating performance. However, this technology does not involve the technical problems and technical solutions of the present application. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the existing technology, a tripping coil structure for a vacuum circuit breaker is provided which simplifies the coil installation structure, reduces costs, effectively prevents safety accidents caused by failure of the circuit breaker tripping coil and inability to remotely trip the circuit breaker, and improves the safety of the equipment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0006] The utility model discloses a tripping coil tripping structure for a vacuum circuit breaker. A tripping half-shaft is installed on the circuit breaker body. A coil mounting bracket is installed on the circuit breaker body above the tripping half-shaft. A first tripping coil and a second tripping coil are installed on the coil mounting bracket. The first tripping coil is connected to the tripping half-shaft through a first tripping bent plate, and the second tripping coil is connected to the tripping half-shaft through a second tripping bent plate.

[0007] The circuit breaker body is also provided with a closing holding mechanism, which is configured as a structure capable of abutting against or separating from a tripping half-shaft.

[0008] The first opening coil and the second opening coil are connected to the control component respectively. The first opening coil includes a first movable iron core that can be extended and retracted, and the second opening coil includes a second movable iron core that can be extended and retracted.

[0009] The coil mounting bracket is fixed on the tripping device partition, and the tripping device partition is mounted on the circuit breaker body.

[0010] One end of the first opening bent plate is fixedly connected to the tripping half-shaft, and the other end of the first opening bent plate extends to the position of the second moving iron core of the first opening coil.

[0011] One end of the second opening bent plate is fixedly connected to the tripping half-shaft, and the other end of the second opening bent plate extends to the position of the second moving iron core of the second opening coil.

[0012] The coil mounting bracket is a plastic bracket with two holes.

[0013] The first opening gate bent plate and the second opening gate bent plate are both nylon plastic parts.

[0014] The first opening bent plate is cast on the tripping half-shaft through the first mounting hole on the tripping half-shaft, and the second opening bent plate is cast on the tripping half-shaft through the second mounting hole on the tripping half-shaft.

[0015] The technical solution of this utility model is adopted, and the working principle and beneficial effects are as follows:

[0016] The utility model discloses a tripping coil tripping structure for a vacuum circuit breaker. When the structure is set, a tripping half-shaft is installed on the circuit breaker body. The rotation of the tripping half-shaft needs to be controlled to realize the state control of the circuit breaker. A coil mounting bracket is installed on the circuit breaker body above the tripping half-shaft. The coil mounting bracket includes two mounting holes, one mounting hole is used to install the first tripping coil, and the other mounting hole is used to install the second tripping coil. The first tripping coil is connected to the tripping half-shaft through the first tripping bent plate, and the second tripping coil is connected to the tripping half-shaft through the second tripping bent plate. In this way, when the circuit breaker is in the closed state, the closing holding mechanism of the circuit breaker is buckled on the tripping half-shaft. When the circuit breaker needs to be opened, under normal circumstances, the movable iron core of the first opening coil is extended and pressed against the execution end of the first opening bend plate, and the tripping half-shaft is driven to rotate through the first opening bend plate, so that the closing holding mechanism is disengaged from the tripping half-shaft and the circuit breaker is opened. If the first opening coil fails, the second opening coil will receive an opening command from the control component, and the movable iron core of the second opening coil will extend and press against the execution end of the second opening bend plate, which can drive the tripping half-shaft to rotate through the second opening bend plate, similarly disengaging the closing holding mechanism from the tripping half-shaft and opening the circuit breaker. In this way, the control of the first opening coil is a normal component, and the control of the second opening coil is a backup component, thereby effectively avoiding the hidden danger that the failure of one opening coil will cause the circuit breaker to be unable to be remotely opened, leading to safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 This is a schematic top view of the structure of the opening coil installation of the opening coil tripping structure for the vacuum circuit breaker according to the present invention;

[0019] Figure 2 This is a front structural schematic diagram of the tripping structure of the opening coil for the vacuum circuit breaker according to the present invention;

[0020] The markings in the accompanying drawings are: 1. Coil mounting bracket; 2. First tripping coil; 3. Second tripping coil; 4-1. Second tripping bend plate; 4-2. First tripping bend plate; 5. Tripping half-shaft; 6. Closing holding mechanism; 7. Circuit breaker body; 8. Tripping device partition. DETAILED DESCRIPTION

[0021] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connections of the various components involved, the functions and working principles of the various components, etc., by referring to the accompanying drawings.

[0022] As attached Figure 1 , Attachment Figure 2As shown, the present invention provides a tripping coil tripping structure for a vacuum circuit breaker. A tripping half-shaft 5 is mounted on the circuit breaker body 7. A coil mounting bracket 1 is mounted on the circuit breaker body 7 above the tripping half-shaft 5. A first tripping coil 2 and a second tripping coil 3 are mounted on the coil mounting bracket 1. The first tripping coil 2 is connected to the tripping half-shaft 5 via a first tripping bent plate 4-2, and the second tripping coil 3 is connected to the tripping half-shaft 5 via a second tripping bent plate 4-1. The above structure addresses the shortcomings of the prior art and provides an improved technical solution. During the structural setting, a tripping half-shaft 5 is installed on the circuit breaker body 7. It is necessary to control the rotation of the tripping half-shaft 5 to realize the state control of the circuit breaker. A coil mounting bracket 1 is installed on the circuit breaker body 7 above the tripping half-shaft 5. The coil mounting bracket 1 includes two mounting holes, one mounting hole is used to install the first tripping coil 2, and the other mounting hole is used to install the second tripping coil 3. The first tripping coil 2 is connected to the tripping half-shaft 5 through the first tripping bend plate 4-2, and the second tripping coil 3 is connected to the tripping half-shaft 5 through the second tripping bend plate 4-1. In this way, when the circuit breaker is in the closed state, the closing holding mechanism 6 of the circuit breaker is buckled onto the tripping half-shaft 5. When the circuit breaker needs to be opened, under normal circumstances, the movable iron core of the first tripping coil 2 is extended and pressed against the execution end of the first tripping bend plate 4-2, and the tripping half-shaft 5 is driven to rotate through the first tripping bend plate 4-2, so that the closing holding mechanism is disengaged from the tripping half-shaft 5, and the circuit breaker is opened. If the first tripping coil 2 fails, the second tripping coil 3 will receive an opening command from the control component, and the movable iron core of the second tripping coil 3 will extend and press against the execution end of the second tripping bend plate 4-1, which can drive the tripping half-shaft 5 to rotate through the second tripping bend plate 4-1, similarly disengaging the closing holding mechanism 6 from the tripping half-shaft 5, and the circuit breaker is opened. In this way, the control of the first tripping coil 2 is the normal component, and the control of the second tripping coil 3 is the backup component, thereby effectively avoiding the hidden danger that the circuit breaker cannot be remotely opened due to the failure of one tripping coil, which may lead to a safety accident. The tripping structure of the tripping coil for a vacuum circuit breaker described in the utility model simplifies the coil installation structure, reduces costs, effectively prevents safety accidents caused by failure of the circuit breaker tripping coil and inability to remotely trip the circuit breaker, thereby improving equipment safety.

[0023] The circuit breaker body 7 is also provided with a closing retention mechanism 6, which is configured to abut or disengage from the tripping half-shaft 5. This structure controls the abutment and disengagement between the closing retention mechanism 6 and the tripping half-shaft 5 by controlling the rotation of the tripping half-shaft 5. When the abutment occurs, the circuit breaker is closed, and when the disengagement occurs, the circuit breaker is opened.

[0024] The first tripping coil 2 and the second tripping coil 3 are each connected to a control component. The first tripping coil 2 includes a retractable first movable iron core, and the second tripping coil 3 includes a retractable second movable iron core. With the above structure, when the first movable iron core of the first tripping coil 2 is extended, it applies force to the first tripping bend 4-2, driving the tripping half-shaft to rotate via the first tripping bend 4-2. When the second movable iron core of the second tripping coil 3 is extended, it applies force to the second tripping bend 4-1, driving the tripping half-shaft to rotate via the second tripping bend 4-1.

[0025] The coil mounting bracket 1 is fixed on the trip device partition 8, and the trip device partition 8 is mounted on the circuit breaker body 7. The above structure realizes the reliable installation of the coil mounting bracket 1.

[0026] One end of the first tripping bent plate 4-2 is fixedly connected to the tripping half-shaft 5, and the other end of the first tripping bent plate 4-2 extends to the position of the second movable iron core of the first tripping coil 2. With the above structure, when the first movable iron core of the first tripping coil 2 extends, it can exert force on the first tripping bent plate 4-2, and when the first movable iron core of the first tripping coil 2 contracts, the first tripping bent plate 4-2 is reset.

[0027] One end of the second tripping bend 4-1 is fixedly connected to the tripping half-shaft 5, and the other end of the second tripping bend 4-1 extends to the position of the second movable iron core of the second tripping coil 3. With the above structure, when the second movable iron core of the second tripping coil 3 extends, it can exert force on the second tripping bend 4-1, and when the first movable iron core of the second tripping coil 3 contracts, the second tripping bend 4-1 is reset.

[0028] The coil mounting bracket 1 is a plastic bracket with two holes. With the above structure, the plastic bracket has good insulation and can ensure that the coil mounting bracket 1 can be reliably fixed and installed.

[0029] The first opening gate bent plate 4-2 and the second opening gate bent plate 4-1 are both nylon plastic parts.

[0030] The first tripping bent plate 4-2 is cast onto the tripping half-shaft 5 through the first mounting hole on the tripping half-shaft 5, and the second tripping bent plate 4-1 is cast onto the tripping half-shaft 5 through the second mounting hole on the tripping half-shaft 5. In the above structure, the first tripping bent plate 4-2 and the second tripping bent plate 4-1 are respectively fixedly connected to the tripping half-shaft. Whether the first tripping bent plate 4-2 or the second tripping bent plate 4-1 is pushed by an external force, it can drive the tripping half-shaft 5 to rotate.

[0031] The utility model describes a tripping coil tripping structure for a vacuum circuit breaker, a tripping half-shaft 5 is installed on the circuit breaker body 7, and the rotation of the tripping half-shaft 5 needs to be controlled to realize the state control of the circuit breaker. A coil mounting bracket 1 is installed on the circuit breaker body 7 above the tripping half-shaft 5. The coil mounting bracket 1 includes two mounting holes, one mounting hole is used to install the first tripping coil 2, and the other mounting hole is used to install the second tripping coil 3. The first tripping coil 2 is connected to the tripping half-shaft 5 through the first tripping bent plate 4-2, and the second tripping coil 3 is connected to the tripping half-shaft 5 through the second tripping bent plate 4-1. When the circuit breaker is in the closed state, the closing holding mechanism 6 of the circuit breaker is buckled on the tripping half-shaft 5. When the circuit breaker needs to be opened, under normal circumstances, the movable iron core of the first tripping coil 2 is extended and pressed against the execution end of the first tripping bend plate 4-2, and the tripping half-shaft 5 is driven to rotate through the first tripping bend plate 4-2, so that the closing holding mechanism is disengaged from the tripping half-shaft 5 and the circuit breaker is opened. If the first tripping coil 2 fails, the second tripping coil 3 will receive the opening command issued by the control component, and the movable iron core of the second tripping coil 3 will extend and press against the execution end of the second tripping bend plate 4-1, which can drive the tripping half-shaft 5 to rotate through the second tripping bend plate 4-1, similarly disengaging the closing holding mechanism 6 from the tripping half-shaft 5 and the circuit breaker is opened. In this way, the control of the first tripping coil 2 is the normal component, and the control of the second tripping coil 3 is the backup component, thereby effectively avoiding the hidden danger that the circuit breaker cannot be remotely opened due to the failure of one tripping coil, which may lead to a safety accident.

[0032] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A tripping structure for a tripping coil of a vacuum circuit breaker, characterized in that: A tripping half-shaft (5) is mounted on the circuit breaker body (7); a coil mounting bracket (1) is mounted on the circuit breaker body (7) above the tripping half-shaft (5); a first tripping coil (2) and a second tripping coil (3) are mounted on the coil mounting bracket (1); the first tripping coil (2) is connected to the tripping half-shaft (5) via a first tripping bent plate (4-2); and the second tripping coil (3) is connected to the tripping half-shaft (5) via a second tripping bent plate (4-1).

2. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1, characterized in that: A closing holding mechanism (6) is also provided on the circuit breaker body (7), and the closing holding mechanism (6) is configured as a structure capable of abutting against or separating from the tripping half-shaft (5).

3. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The first opening coil (2) and the second opening coil (3) are respectively connected to the control component; the first opening coil (2) comprises a first movable iron core that can be extended and retracted; and the second opening coil (3) comprises a second movable iron core that can be extended and retracted.

4. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The coil mounting bracket (1) is fixed on a tripping device partition (8), and the tripping device partition (8) is mounted on a circuit breaker body (7).

5. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: One end of the first opening bend plate (4-2) is fixedly connected to the tripping half-shaft (5), and the other end of the first opening bend plate (4-2) extends to the position of the second moving iron core of the first opening coil (2).

6. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 5, characterized in that: One end of the second opening bend plate (4-1) is fixedly connected to the tripping half-shaft (5), and the other end of the second opening bend plate (4-1) extends to the position of the second moving iron core of the second opening coil (3).

7. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The coil mounting bracket (1) is a plastic bracket with two holes.

8. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The first gate opening bent plate (4-2) and the second gate opening bent plate (4-1) are both nylon plastic parts.

9. The tripping structure of the opening coil for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The first opening bend plate (4-2) is cast on the tripping half-shaft (5) through a first mounting hole on the tripping half-shaft (5), and the second opening bend plate (4-1) is cast on the tripping half-shaft (5) through a second mounting hole on the tripping half-shaft (5).

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