Structure for forbidding emergency operation in grounding closing state of circuit breaker cabinet electric control mechanism

Abstract

The utility model discloses a structure for prohibiting emergency operation in a grounding closing state of an electric control mechanism of a circuit breaker cabinet, a guide bracket is arranged at the upper part of the electric control mechanism of the circuit breaker cabinet, the guide bracket is connected with a stroke baffle plate through a copper ring, and the stroke baffle plate is arranged at a grounding switch interlocking plate; and the travel separation blade blocks the emergency crank hole when the grounding switch is switched on. According to the utility model, a simple and novel interlocking structure is used, the operation safety is improved, the high-voltage equipment is safer and more reliable, and the personnel safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage power distribution equipment, in particular to a structure for prohibiting emergency operation in a grounding-closed state of an electric control mechanism of a circuit breaker cabinet. Background Art

[0002] In the existing high-voltage power distribution equipment, it is not allowed to operate the circuit breaker when the circuit breaker cabinet is in the grounding state. This is the basic five-protection requirement. For the electric control of the circuit breaker cabinet, an emergency crank operation hole is often configured. When the electric control fails, the circuit breaker can be manually opened and closed through emergency operation. However, there is a risk of misoperation.

[0003] Electricity safety has always been the focus of the distribution network system. Therefore, it is necessary to develop a structure that prohibits emergency operation when the electric control mechanism of the circuit breaker cabinet is in the grounded state to improve the safety of operation. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a structure for prohibiting emergency operation when the electric control mechanism of the circuit breaker cabinet is in the grounded closed state, uses a simple and novel interlocking structure, improves the safety of operation, makes high-voltage equipment safer and more reliable, and improves personnel safety.

[0005] Technical solution: The utility model provides a structure for prohibiting emergency operation in the grounded closed state of the electric control mechanism of the circuit breaker cabinet, which is characterized by: a guide bracket is installed on the upper part of the electric control mechanism of the circuit breaker cabinet, the guide bracket is connected to the travel baffle through a copper ring, the travel baffle is installed at the locking plate of the grounding switch, and the travel baffle blocks the emergency crank handle hole when the grounding switch is closed.

[0006] Wherein, the travel baffle slides up and down within the limit of the guide bracket.

[0007] Wherein, the emergency crank hole is used for inserting the emergency crank of the electric control mechanism.

[0008] Wherein, the travel baffle does not block the emergency crank handle hole when the grounding switch is opened.

[0009] Wherein, the electric control mechanism of the circuit breaker cabinet is located on the circuit breaker cabinet.

[0010] Working principle: add an interlocking device at the grounding opening and closing position of the circuit breaker cabinet. When the grounding is closed, the emergency crank hole is blocked to prevent personnel from inserting the crank and manually opening and closing the circuit breaker to cause safety accidents. In order to meet the requirements of the five-protection interlocking, an interlocking device is added. The operator only needs to operate the grounding switch to close the grounding switch, and the travel baffle moves downward to block the crank operation hole.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model has a simple and novel structure and adopts a simple and efficient interlocking method; it improves the convenience of operation for operators, prevents misoperation, and has higher safety and reliability. It fully considers the five protection requirements of high-voltage electrical equipment, making high-voltage equipment safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the emergency crank handle of the electric control mechanism of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the guide bracket of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the copper ring of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the travel baffle of the utility model;

[0017] In the figure, 1 is the electric control mechanism of the circuit breaker cabinet; 2 is the guide bracket; 3 is the copper ring; 4 is the travel stopper; and 5 is the emergency crank of the electric control mechanism. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1-5 The utility model discloses a structure that prohibits emergency operation in the grounding closing state of the electric control mechanism of the circuit breaker cabinet, and is provided with a simple and efficient grounding closing scheme that does not allow manual opening and closing of the circuit breaker. A guide bracket 2 is installed on the upper part of the electric control mechanism 1 of the circuit breaker cabinet, and a travel baffle 4 is connected through a copper ring 3 to realize the up and down sliding of the travel baffle within a specified path; the travel baffle 4 is installed at the interlocking plate of the grounding switch, and when the grounding switch is operated to open and close, the interlocking device on the grounding switch will have a circular motion, driving the travel baffle here to move up and down; in the grounding closing state, the travel baffle 4 moves downward to block the emergency crank handle hole, and the operator cannot insert the crank handle, so the circuit breaker of the electric control structure cannot be manually opened and closed; in the grounding opening state, the travel baffle 4 moves upward to expose the emergency crank handle hole, and the operator can insert the crank handle.

[0020] The utility model has a novel structure and a simple and efficient interlocking method. It is connected in series with the interlocking of the mechanism itself to achieve the interlocking purpose. It only uses a mechanical interlocking method without complicated electrical interlocking, which simplifies the operation process and does not interfere with the interlocking of the mechanism itself. It is safe, simple and efficient.

Claims

1. A structure for prohibiting emergency operation when the electric control mechanism of a circuit breaker cabinet is in the grounded state, characterized in that: A guide bracket (2) is installed on the upper part of the electric control mechanism (1) of the circuit breaker cabinet. The guide bracket (2) is connected to a travel baffle (4) through a copper ring (3). The travel baffle (4) is installed at the locking plate of the grounding switch. When the grounding switch is closed, the travel baffle (4) blocks the emergency crank handle hole.

2. The structure for prohibiting emergency operation in the grounded state of the electric control mechanism of the circuit breaker cabinet according to claim 1 is characterized in that: The travel baffle (4) slides up and down within the limit of the guide bracket (2).

3. The structure for prohibiting emergency operation in the grounded state of the electric control mechanism of the circuit breaker cabinet according to claim 1 is characterized in that: The emergency crank hole is used for inserting the emergency crank (5) of the electric control mechanism.

4. The structure for prohibiting emergency operation in the grounded closed state of the electric control mechanism of the circuit breaker cabinet according to claim 1, characterized in that: The travel blocking piece (4) does not block the emergency crank handle hole when the grounding switch is opened.

5. The structure for prohibiting emergency operation in the grounded state of the electric control mechanism of the circuit breaker cabinet according to claim 1, characterized in that: The circuit breaker cabinet electric control mechanism (1) is located on the circuit breaker cabinet.

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