CN202110983U - A safety protection device applied to high-voltage metering cabinet - Google Patents

Abstract

The utility model relates to a be applied to high-voltage distribution equipment's safety arrangement, especially relate to a be applied to safety arrangement of high-pressure measurement cabinet. The utility model relates to a safety protection device applied to a high-voltage metering cabinet, which comprises an interlocking mechanism, wherein the interlocking mechanism comprises an interlocking pin and an interlocking plate; the interlocking mechanism is provided with an interlocking driving mechanism driven by an operating handle of the high-voltage switch cabinet, and the interlocking driving mechanism is in driving connection with the interlocking mechanism. Through adopting above-mentioned structure, the high-pressure measurement cabinet only opens and control handle rotation to the condition of separating the floodgate position under at high tension switchgear's operating flap and can open, can avoid like this that the maintainer overhauls the high-pressure measurement cabinet under the circumstances of not cutting off the interconnecting link between high-pressure measurement cabinet and the high tension switchgear. Therefore, the utility model discloses an above-mentioned structure can effectually avoid the incident that takes place at the in-process of overhauing the high-pressure measurement cabinet, and has safe and reliable and simple structure's advantage.

Description

A safety protection device applied to high-voltage metering cabinet

technical field

The utility model relates to a safety protection device applied to high-voltage power distribution equipment, in particular to a safety protection device applied to a high-voltage metering cabinet.

Background technique

High-voltage switchgear is electrical equipment based on circuit breakers, especially when manufacturers assemble related high and low-voltage electrical appliances, bus bars, current-carrying conductors, insulators, etc. in closed or open cabinets according to the requirements of the primary electrical wiring diagram. The metal cabinet is used as a device for receiving and distributing electric energy in the power system. In addition, in order to prevent personal contact with the high-voltage electrified body inside the high-voltage switchgear and cause electric shock accidents, the high-voltage switchgear is generally equipped with an operating valve; among them, the operating valve cooperates with the operating handle of the high-voltage switchgear. When the operating valve is in the open state , the operating handle can be rotated to the opening position and cut off the connection line between the high-voltage switch cabinet and the high-voltage metering cabinet. When the operating valve is closed, the operating handle cannot move.

The high-voltage metering cabinet is a kind of electrical equipment composed of a cabinet body, a current transformer and a voltage transformer, and is mainly used to measure electricity consumption; in the process of overhauling the electrical components of the high-voltage metering cabinet, in order to ensure operation safety, Maintenance personnel must disconnect the connection line between the high-voltage switchgear and the high-voltage metering cabinet in advance; among them, the high-voltage metering cabinet is generally used in parallel with the high-voltage switchgear.

However, there is generally no corresponding safety protection device installed between the existing high-voltage metering cabinets and high-voltage switchgears; therefore, it is necessary to improve the existing high-voltage metering cabinets and high-voltage switchgears installed in cabinets to further ensure operational safety.

Contents of the invention

The purpose of this utility model is to provide a safety protection device applied to the high-voltage metering cabinet in view of the deficiencies of the prior art. Simple structure.

In order to achieve the above object, the utility model is realized through the following technical solutions.

A safety protection device applied to a high-voltage metering cabinet, which includes an interlock mechanism installed between the high-voltage switch cabinet and the high-voltage metering cabinet. The lock pin and the interlock plate fixed on the inner side of the cabinet door of the high-voltage metering cabinet; the interlock mechanism is equipped with an interlock drive mechanism driven by the joystick of the high-voltage switch cabinet, and the interlock drive mechanism is driven and connected with the interlock mechanism; When the safety protection device applied to the high-voltage metering cabinet is in the interlocking closed state, the interlocking pin abuts against the interlocking plate.

Wherein, the interlock driving mechanism includes a connecting rod and a switch shaft driven by the operating handle of the high-voltage switch cabinet and rotatably installed in the high-voltage switch cabinet. The switch shaft, the connecting rod, and the interlock pin are in turn Driver connection.

Wherein, one end of the connecting rod is hinged to the driving end of the interlock pin, the other end of the connecting rod is hinged to the switch shaft, and the hinged position of the connecting rod and the switch shaft deviates from the rotation center of the switch shaft.

Wherein, the interlock plate is provided with an interlock hole corresponding to the interlock pin, and when the safety protection device applied to the high-voltage metering cabinet is in an interlock closed state, the interlock pin is inserted into the interlock hole.

The beneficial effects of the utility model are: a safety protection device for a high-voltage metering cabinet described in the utility model includes an interlock mechanism, the interlock mechanism includes an interlock pin and an interlock plate; the interlock mechanism is equipped with The interlock driving mechanism is driven by the joystick of the high-voltage switch cabinet, and the interlock driving mechanism is drivingly connected with the interlock mechanism. In the process of overhauling the electrical components of the high-voltage metering cabinet, the maintenance personnel must first open the operating valve of the high-voltage switch cabinet with the key, and then drive the interlocking drive mechanism through the joystick. During this process, the interlocking drive mechanism drives the interlocking The lock mechanism moves and makes the interlock pin withdraw from the interlock plate; the door of the high-voltage metering cabinet can only be opened because the interlock pin no longer touches the interlock plate; when the electrical components of the high-voltage metering cabinet are overhauled, the maintenance personnel close Close the control handle on the door of the high-voltage metering cabinet, and the interlock drive mechanism will drive the interlock mechanism to move and make the interlock pin abut against the interlock plate again, pull out the key, and close the operating valve. Based on the above situation, it can be seen that the utility model can effectively avoid safety accidents in the process of overhauling the high-voltage metering cabinet through the above-mentioned structure, and has the advantages of safety, reliability and simple structure.

Description of drawings

The utility model will be further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present utility model.

Fig. 1 is a structural schematic diagram of the utility model in an open state of the interlock.

Fig. 2 is a structural schematic diagram of the utility model in the interlocking closed state.

In Figure 1 and Figure 2 include:

1——High voltage switchgear 2——High voltage metering cabinet

3——Interlock mechanism 31——Interlock pin

32——Interlocking plate 321——Interlocking hole

4——Interlocking drive mechanism 41——Connecting rod

42——switch rotating shaft.

Detailed ways

The utility model will be further described below in conjunction with specific embodiments.

Embodiment 1, as shown in Figure 1 and Figure 2, the safety protection device applied to the high-voltage metering cabinet in this embodiment 1 includes an interlock mechanism 3 installed between the high-voltage switch cabinet 1 and the high-voltage metering cabinet 2. The locking mechanism 3 includes an interlocking pin 31 that runs through the cabinet walls of the high-voltage switch cabinet 1 and the high-voltage metering cabinet 2 in turn, and an interlocking plate 32 fixed on the inside of the door of the high-voltage metering cabinet 2; The interlock drive mechanism 4 driven by the joystick of the high-voltage switchgear 1, the interlock drive mechanism 4 is connected to the interlock mechanism 3; when the safety protection device applied to the high-voltage metering cabinet is in the interlock closed state, the interlock pin 31 It abuts against the interlocking plate 32 .

As shown in Figure 1 and Figure 2, there is a through hole between the high-voltage metering cabinet 2 and the high-voltage switch cabinet 1 for the interlock pin 31 to pass through, and the interlock pin 31 extends from the inner cavity of the high-voltage switch cabinet 1 through the above-mentioned through hole to In the inner cavity of the high-voltage metering cabinet 2, the interlock pin 31 moves horizontally back and forth along the above-mentioned through hole. The following is a detailed description of the first embodiment in conjunction with the specific working process, as follows: As shown in Figure 2, the safety protection device applied to the high-voltage metering cabinet of the first embodiment is in the interlocking closed state. In the process of overhauling the electrical components of 2, the overhaul personnel must first open the operating valve of the high-voltage switchgear 1 through the key, and then rotate the operating handle to the opening position, and then drive the interlocking drive mechanism 4 to act. In the process of rotating to the opening position, the connection line between the high-voltage switch cabinet 1 and the high-voltage metering cabinet 2 is disconnected; the interlock driving mechanism 4 drives the interlock mechanism 3 to act and makes the interlock pin 31 withdraw from the interlock plate 32, Since the interlock pin 31 is no longer in contact with the interlock plate 32, at this moment, the cabinet door of the high-voltage metering cabinet 2 can be opened, and the maintenance personnel can safely perform maintenance operations (as shown in Figure 1); when the high-voltage metering cabinet 2 After the electrical components are overhauled, the maintenance personnel must close the door of the high-voltage metering cabinet 2, and then turn the operating handle to the closing position. The connecting line between the high-voltage switch cabinet 1 and the high-voltage metering cabinet 2 is connected, and the operating handle drives The lock drive mechanism 4 reverses and finally drives the interlock mechanism 3 to act, so that the interlock pin 31 contacts the interlock plate 32 again (as shown in Figure 2), the key is pulled out, and the operating valve of the high-voltage switchgear 1 is reset. is closed.

Based on the above situation, it can be seen that by adopting the safety protection device applied to the high-voltage metering cabinet of the first embodiment, the high-voltage metering cabinet 2 installed in parallel with the high-voltage switchgear 1 can only be opened when the operating valve of the high-voltage switchgear 1 is opened and the control handle is rotated to It can only be opened under the condition of the opening position, which can prevent maintenance personnel from overhauling the high-voltage metering cabinet 2 when the power is not cut off; therefore, the safety protection device applied to the high-voltage metering cabinet in the first embodiment can effectively It can effectively avoid safety accidents in the process of overhauling the high-voltage metering cabinet 2, and has the advantages of safety, reliability and simple structure.

Embodiment 2, as shown in FIG. 1 and FIG. 2 , the difference between this embodiment 2 and embodiment 1 is that the interlock drive mechanism 4 includes a connecting rod 41 and is driven and rotatably mounted by the joystick of the high-voltage switch cabinet 1 . The switch shaft 42 installed in the high-voltage switchgear 1, the switch shaft 42, the connecting rod 41 and the interlock pin 31 are sequentially driven and connected; further, one end of the connecting rod 41 is hinged to the driving end of the interlock pin 31, and the connecting rod The other end of 41 is hinged to the switch shaft 42 , and the hinged position between the connecting rod 41 and the switch shaft 42 deviates from the rotation center of the switch shaft 42 . The action process of the safety protection device applied to the high-voltage metering cabinet in the second embodiment is as follows: when the key is used to open the operating valve of the high-voltage switch cabinet 1 and the operating handle is rotated to the opening position, the switch shaft 42 rotates and the connecting rod 41 will The interlock pin 31 is dragged away from the interlock plate 32. At this time, the door of the high-voltage metering cabinet 2 can be opened; when the control handle is closed, the switch shaft 42 reverses and pushes the interlock pin 31 through the connecting rod 41 to connect with the interlock plate again. 32, at this time, the door of the high-voltage metering cabinet 2 cannot be opened.

Embodiment 3, as shown in Figure 1 and Figure 2, the difference between this Embodiment 3 and Embodiment 1 is that the interlock plate 32 is provided with an interlock hole 321 corresponding to the interlock pin 31, which should be applied to the safety of the high-voltage metering cabinet. When the protection device is in the interlocking closed state, the interlocking pin 31 is inserted into the interlocking hole 321 . In the safety protection device applied to the high-voltage metering cabinet in the third embodiment, the interlock action is realized through the cooperation of the interlock hole 321 and the interlock pin 31. When the interlock is opened as shown in Figure 1, the interlock pin 31 withdraws from the interlocking hole 321; when in the interlocking closed state as shown in FIG.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (4)

1. safety guard that is applied to high-voltage metering cubicle; It is characterized in that: include the interlocking device (3) that is installed between high-tension switch cabinet (1) and the high-voltage metering cubicle (2), the interlock plate (32) of inboard that interlocking device (3) includes the interlocking latch (31) of the cabinet wall that runs through high-tension switch cabinet (1) and high-voltage metering cubicle (2) successively and is fixed in the cabinet door of high-voltage metering cubicle (2); Interlocking device (3) is equipped with the interlocking driving mechanism (4) through the control crank driving of high-tension switch cabinet (1), and interlocking driving mechanism (4) drives with interlocking device (3) and is connected; When this safety guard that is applied to high-voltage metering cubicle is in the interlocking closure state, interlocking latch (31) and interlock plate (32) butt.

2. a kind of safety guard that is applied to high-voltage metering cubicle according to claim 1; It is characterized in that: said interlocking driving mechanism (4) includes connecting rod (41) and the control crank through said high-tension switch cabinet (1) and drives and be installed in the switch rotating shaft (42) in the high-tension switch cabinet (1) rotationally, and switch rotating shaft (42), connecting rod (41) and said interlocking latch (31) drive connection successively.

3. a kind of safety guard that is applied to high-voltage metering cubicle according to claim 2; It is characterized in that: the drive end of an end of said connecting rod (41) and said interlocking latch (31) is hinged; The other end of connecting rod (41) and said switch rotating shaft (42) are hinged, and connecting rod (41) departs from the pivot of switch rotating shaft (42) with the articulated position of switch rotating shaft (42).

4. a kind of safety guard that is applied to high-voltage metering cubicle according to claim 1; It is characterized in that: the corresponding said interlocking latch of said interlock plate (32) (31) offers interlocking hole (321); When this safety guard that is applied to high-voltage metering cubicle was in the interlocking closure state, interlocking latch (31) intercalation was in the hole of interlocking (321).

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