Five-prevention operation mechanical lock of box transformer high-voltage cabinet

Abstract

The utility model discloses a five-prevention operation mechanical lock of a box transformer high-voltage cabinet, which comprises a mechanical lock main body, a mechanical lock cylinder, a mechanical lock key, a mechanical lock limiting baffle plate and a mechanical lock support rod, the mechanical lock cylinder is arranged in the mechanical lock main body, the mechanical lock key is arranged outside the mechanical lock main body, and the mechanical lock key is connected with the mechanical lock cylinder in a matching way; a mechanical lock limiting baffle is installed at the top of the mechanical lock body on the opposite side of the mechanical lock cylinder. Under the condition that the electromagnetic lock fails, the five-prevention operation mechanical lock can be normally operated, and the five-prevention operation mechanical lock is used in five-prevention operation of a high-voltage cabinet of a box-type substation to protect the safety of operators on the high-voltage side.

Description

Technical Field

[0001] This utility model relates to a mechanical lock, specifically a five-proof operating mechanical lock for a transformer substation high-voltage switchgear. Background Technology

[0002] The five-prevention design scheme for high-voltage switchgear in prefabricated substations is a solution proposed to meet the operational safety and intelligent management needs of high-voltage switchgear equipment in prefabricated substations (referred to as "prefabricated substations"). The five-prevention function (i.e., "prevention of misoperation") is a core requirement for ensuring equipment and personnel safety in power systems, specifically including the following five functions: preventing accidental opening or closing of circuit breakers; preventing accidental opening or closing of disconnecting switches under load; preventing the connection of grounding wires while energized; preventing the closing of circuit breakers with grounding wires connected; and preventing accidental entry into energized compartments.

[0003] The shortcomings of traditional high-voltage switchgear: The operation and management of traditional high-voltage switchgear mainly rely on manual labor, which can easily lead to accidents due to operational errors or negligence; the operation of high-voltage equipment requires strict standards and procedures, but in actual operation, due to human factors or equipment design defects, misoperation accidents occur from time to time.

[0004] Therefore, a type of lock is needed to ensure the safety of operators even if the electromagnetic lock fails. Utility Model Content

[0005] To address the issue of electromagnetic lock failure in the high-voltage incoming cabinet of a prefabricated substation, this invention provides a five-proof operating mechanical lock for the high-voltage cabinet, which has a mechanical interlock function, allowing the mechanical lock to still operate even if the electromagnetic lock fails.

[0006] This utility model provides the following technical solution:

[0007] A five-proof operating mechanical lock for a prefabricated high-voltage switchgear includes a mechanical lock body, a mechanical lock cylinder, a mechanical lock key, a mechanical lock limiting baffle, and a mechanical lock support rod. The mechanical lock cylinder is installed inside the mechanical lock body, and the mechanical lock key is installed outside the mechanical lock body. The mechanical lock key is matched and connected to the mechanical lock cylinder. The mechanical lock limiting baffle is installed on the top of the mechanical lock body on the opposite side of the mechanical lock cylinder.

[0008] Furthermore, a mechanical lock frame is installed on the main body of the mechanical lock.

[0009] Furthermore, the mechanical lock frame is bent into an L-shape.

[0010] Furthermore, the mechanical lock key is a rotary button.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: The five-proof operating mechanical lock is installed on the upper part of the lower door of the metering cabinet. The lock cylinder locks the lower door from top to bottom. When the mechanical lock is opened using the mechanical lock key, the lock cylinder opens from bottom to top, allowing the lower door of the metering cabinet to open. However, the mechanical lock key cannot be removed until the lower door of the metering cabinet is closed again and the mechanical lock cylinder is locked from top to bottom. Even if the electromagnetic lock fails, the five-proof operating mechanical lock can still operate normally. This five-proof operating mechanical lock is used for the five-proof operation of high-voltage cabinets in box-type substations, protecting the safety of high-voltage side operators. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model;

[0013] Figure 2 This is a side view of the present invention;

[0014] Figure 3 This is a top view of the present invention;

[0015] Figure 4 This is a schematic diagram of the installation of this utility model.

[0016] In the diagram: 1. Mechanical lock body; 2. Mechanical lock cylinder; 3. Mechanical lock key; 4. Mechanical lock frame; 5. Mechanical lock limit baffle; 6. Lower door of the metering cabinet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 The present invention relates to a five-proof operating mechanical lock for a transformer substation high-voltage switchgear, comprising a mechanical lock body 1, a mechanical lock cylinder 2, a mechanical lock key 3, a mechanical lock limiting baffle 5, and a mechanical lock support rod 6. The mechanical lock cylinder 2 is installed inside the mechanical lock body 1, and the mechanical lock key 3 is set outside the mechanical lock body 1. The mechanical lock key 3 is matched and connected to the mechanical lock cylinder 2. The mechanical lock limiting baffle 5 is installed on the top of the mechanical lock body 1 on the opposite side of the mechanical lock cylinder 2.

[0019] The mechanical lock body 1 is equipped with a mechanical lock bracket 4, which facilitates installation inside a cabinet.

[0020] The mechanical lock bracket 4 is bent into an L-shape. This facilitates the installation of the mechanical lock bracket 4 in a suitable position within the cabinet.

[0021] The mechanical lock key 4 is a rotary button. Rotating the rotary button causes the mechanical lock cylinder 2 to extend downwards or retract.

[0022] Figure 4 As shown, the five-proof operating mechanical lock is installed on the upper part of the lower door 6 of the metering cabinet. The lock cylinder locks the lower door from top to bottom (because the protruding lock cylinder is pressing against the lower door). At this time, the mechanical lock is opened by using the mechanical lock key, and the lock cylinder opens from bottom to top. Only then can the lower door of the metering cabinet be opened, but the mechanical lock key cannot be removed. The mechanical lock key can only be removed when the lower door of the metering cabinet is closed again and the mechanical lock cylinder is locked from top to bottom. This five-proof operating mechanical lock is used for the five-proof operation of the high-voltage cabinet in the box-type substation to protect the safety of the high-voltage side operators.

[0023] In the event of electromagnetic lock failure, this mechanical lock ensures the operation of the metering cabinet and fully guarantees the personal safety of operators when high voltage is present.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A five-proof operating mechanical lock for a prefabricated high-voltage switchgear, characterized in that: The lock includes a mechanical lock body (1), a mechanical lock cylinder (2), a mechanical lock key (3), a mechanical lock limiting baffle (5), and a mechanical lock support rod (6). The mechanical lock cylinder (2) is installed inside the mechanical lock body (1), and the mechanical lock key (3) is installed outside the mechanical lock body (1). The mechanical lock key (3) is matched and connected to the mechanical lock cylinder (2). The mechanical lock limiting baffle (5) is installed on the top of the mechanical lock body (1) on the opposite side of the mechanical lock cylinder (2).

2. The five-proof operating mechanical lock for a prefabricated high-voltage switchgear according to claim 1, characterized in that: The mechanical lock body (1) is equipped with a mechanical lock frame (4).

3. The five-proof operating mechanical lock for a prefabricated high-voltage switchgear according to claim 2, characterized in that: The mechanical lock frame (4) is bent into an L-shape.

4. The five-proof operating mechanical lock for a transformer substation high-voltage switchgear according to claim 1, characterized in that... The mechanical lock key (3) is a rotary button.

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