CN212182851U

CN212182851U - Metering cabinet

Info

Publication number: CN212182851U
Application number: CN202021271048.3U
Authority: CN
Inventors: 陈书荣
Original assignee: Chongqing Jiuneng Holding Co ltd
Current assignee: Chongqing Jiuneng Holding Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-12-18
Anticipated expiration: 2030-07-01

Abstract

The utility model provides a measuring cabinet, the cabinet body including the left and right sides inner wall fixedly connected with mounting panel, the mounting panel surface is equipped with the insulation board, the insulation board surface is equipped with first terminal box, the kilowatt-hour meter, second terminal box and ammeter information collection station, first terminal box, the kilowatt-hour meter, the mounting hole has been preset on second terminal box and the ammeter information collection station, set up the fixed orifices relative with the mounting hole on the insulation board, wear to have set the locking screw on the mounting panel in mounting hole and the fixed orifices, the incoming wire terminal of first terminal box is suitable for to be connected and terminal outgoing lines are connected with the kilowatt-hour meter with outside three-phase power supply, the three-phase power wiring end and the zero line wiring end of second terminal correspond with the three-phase power wiring terminal and the zero line terminal of first terminal respectively and are connected. The electric shock protection cabinet can avoid the secondary line of the current transformer from being opened to generate high voltage to enable the cabinet body to be electrified to cause electric shock injury accidents and generate the phenomenon of grounding short circuit to cause fire.

Description

Metering cabinet

Technical Field

The utility model relates to an electric power system technical field, concretely relates to measurement cabinet.

Background

The metering cabinet is a cabinet body used for installing a special metering device, is generally referred to as an electric energy metering cabinet in China, and is a general term for combination of all electrical equipment, electrical parts and mechanical structures for metering electric energy. In the aspects of selection and configuration of transformers of the metering cabinet, special current transformers are necessarily configured in sections, multi-tap transformation ratio current transformers are not suitable for selection, and the rated primary current of the current transformers is determined to ensure that the actual load current of the current transformers in normal operation reaches about 60% of the rated value and is at least not less than 30%. And the inventor discovers through research that the current transformer secondary line is not hard up in the current measurement cabinet, breaks off or the oxidation of a specified duration causes to produce the high voltage easily after opening a way, easily makes terminal box and the kilowatt-hour meter electric leakage of being connected with current transformer secondary line output side to make the electrified emergence of the cabinet body electrocute and hinder people's accident, and with the cabinet body on the installation steel sheet form ground connection short-circuit fault phenomenon, produce the spark and arouse the conflagration.

SUMMERY OF THE UTILITY MODEL

To not hard up, disconnection or the oxidation of being of a specified duration of time of current transformer secondary line in the current measurement cabinet causes to open a way the back and produce high voltage easily, easily makes terminal box and the kilowatt-hour meter electric leakage of being connected with current transformer secondary line output side to make the electrified emergence electric shock of the cabinet body hinder people's accident, and with the cabinet body on the installation steel sheet form ground connection short-circuit fault phenomenon, produce the technical problem that the spark arouses the conflagration, the utility model provides a novel measurement cabinet.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a metering cabinet comprises a cabinet body, mounting plates are fixedly connected to the inner walls of the left side and the right side of the cabinet body, insulating plates are arranged on the surfaces of the mounting plates, a first junction box, an electric meter, a second junction box and an electric meter information collector are arranged on the surfaces of the insulating plates, mounting holes are respectively preset in the first junction box, the electric meter, the second junction box and the electric meter information collector, fixing holes opposite to the mounting holes are formed in the insulating plates, locking screws for fixedly mounting the insulating plates, the first junction box, the electric meter, the second junction box and the electric meter information collector on the mounting plates penetrate through the mounting holes and the fixing holes, an incoming line terminal of the first junction box is suitable for being connected with an external three-phase four-wire power supply, an outgoing line terminal of the first junction box is connected with the electric meter, a three-phase power supply wiring terminal and a zero line wiring terminal of the second junction box, and the power supply outlet end and the zero line outlet end of the second junction box are connected with an ammeter information collector.

Compared with the prior art, the utility model provides a metering cabinet, through at first terminal box, the kilowatt-hour meter, increase the insulation board between second terminal box and ammeter information collector's bottom and the mounting panel, and with the insulation board, first terminal box, the kilowatt-hour meter, second terminal box and ammeter information collector pass through locking screw fixed mounting on the mounting panel, can avoid from this because the current transformer secondary line is not hard up, disconnection or oxidation of a specified duration cause to open a way the back and produce high voltage, easily make terminal box and the kilowatt-hour meter electric leakage of being connected with current transformer secondary line output side, thereby make the electrified emergence electric shock of the cabinet body injure people's accident, and with the cabinet body on the installation steel sheet form ground connection short-circuit fault phenomenon, the production spark arouses the conflagration.

Further, the insulating plate is a resin insulating plate.

Drawings

Fig. 1 is the internal structure schematic diagram of the metering cabinet provided by the utility model.

Fig. 2 is a schematic diagram of a wiring structure of the first junction box of fig. 1.

Fig. 3 is a schematic diagram of a wiring structure of the second junction box of fig. 1.

In the figure, 1, a cabinet body; 2. mounting a plate; 3. an insulating plate; 4. a first junction box; 5. an electric meter; 6. a second junction box; 7. an ammeter information collector; 8. and locking the screw.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the utility model provides a metering cabinet, including a cabinet body 1, the inner wall of the left and right sides of the cabinet body 1 is fixedly connected with a mounting plate 2, the surface of the mounting plate 2 is provided with an insulating plate 3, the surface of the insulating plate 3 is provided with a first junction box 4, a watt-hour meter 5, a second junction box 6 and a watt-hour meter information collector 7, the first junction box 4 and the second junction box 6 have the same structure, and the specific structure and working principle of the first junction box 4, the watt-hour meter 5, the second junction box 6 and the watt-hour meter information collector 7 are the prior art well known by those skilled in the art, and are not described herein again; mounting holes are respectively preset on the first terminal box 4, the watt-hour meter 5, the second terminal box 6 and the watt-hour meter information collector 7, namely the existing first terminal box 4, the watt-hour meter 5, the second terminal box 6 and the watt-hour meter information collector 7 are all provided with mounting holes in advance, the insulating plate 3 is provided with fixing holes opposite to the mounting holes, namely the insulating plate 3 is provided with fixing holes corresponding to the mounting holes on the first terminal box 4, the watt-hour meter 5, the second terminal box 6 and the watt-hour meter information collector 7, locking screws 8 for fixedly mounting the insulating plate 3, the first terminal box 4, the watt-hour meter 5, the second terminal box 6 and the watt-hour meter information collector 7 on the mounting plate 2 are arranged in the mounting holes and the fixing holes in a penetrating manner, namely the insulating plate 3, the first terminal box 4, the watt-hour meter 5, the second terminal box 6 and the watt-hour, the incoming line terminal of first terminal box 4 is suitable for and is connected with outside three-phase four-wire power, the outgoing line terminal of first terminal box 4 is connected with kilowatt-hour meter 5, the three-phase power wiring end and the zero line wiring end of second terminal box 6 correspond with the three-phase power wiring terminal and the zero line terminal of first terminal box 4 respectively and are connected, the power outlet terminal and the zero line outlet terminal of second terminal box 6 are connected with ammeter information collection station 7.

As a specific embodiment, the insulating plate 3 is implemented by using an existing resin insulating plate, and the specific resin insulating plate is an excellent insulating material with high dielectric property, surface leakage resistance and arc resistance, and has the characteristics of strong adhesion, strong shrinkage and excellent mechanical property, so that the insulating plate is very suitable for being used in the application.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a measuring cabinet, includes the cabinet body, the left and right sides inner wall fixedly connected with mounting panel of the cabinet body, its characterized in that, the surface of mounting panel is equipped with the insulation board, the surface of insulation board is equipped with first terminal box, kilowatt-hour meter, second terminal box and ammeter information collection station, the mounting hole has been preset respectively on first terminal box, kilowatt-hour meter, second terminal box and the ammeter information collection station, set up the fixed orifices relative with the mounting hole on the insulation board, wear to have put locking screw with insulation board, first terminal box, kilowatt-hour meter, second terminal box and ammeter information collection station fixed mounting on the mounting panel in mounting hole and the fixed orifices, the incoming line terminal of first terminal box is suitable for being connected with outside three-phase four-wire power, the outgoing line terminal and the kilowatt-hour meter of first terminal box are connected, the three-phase power wiring terminal and the zero line wiring terminal of second terminal correspond with And the power supply outlet end and the zero line outlet end of the second junction box are connected with the ammeter information collector.

2. The metrology cabinet of claim 1 wherein said dielectric plates are selected from resin dielectric plates.