Compact metering cabinet based on miniaturization design

Abstract

The utility model provides a compact metering cabinet based on a miniaturization design, the interior of the cabinet body of the metering cabinet comprises an air chamber and a control chamber, the interior of the air chamber is provided with a conductor and an insulator, the interior of the air chamber is provided with a current transformer, the outer side of the air chamber is provided with a voltage transformer in a plug-in manner, the current transformer is connected with the conductor in a conductive connection manner, and the control chamber is provided with a voltage transformer. The voltage transformer is connected with a conductor on the inner side of the air chamber through an inner cone socket and the three-position switch, the three-position switch is arranged on the inner side of the air chamber, the three-position control mechanism is arranged on the outer side of the air chamber, and the voltage transformer and the current transformer are arranged inside and outside the air chamber of an original metering cabinet, so that the metering lifting function is achieved. And the external metering regulation and control of the voltage transformer at the outer side are realized through the three-station mechanism, so that the linked metering improvement is realized, the problem of insufficient space of a power distribution room is solved, the investment cost is reduced, and the market competitiveness of the product is improved.

Description

Technical Field

[0001] This article belongs to the technical field of switch metering cabinets, and specifically relates to a compact single-unit 35kV C-GIS metering cabinet based on miniaturized design. Background Art

[0002] Switch cabinets are widely used in the distribution network. Metering cabinets are an essential part of power equipment and are widely used in power equipment. A metering cabinet is a dedicated cabinet-type electricity metering device. When installed and used, a metering cabinet needs to cooperate with other types of switch cabinets such as PT cabinets and isolation cabinets. For example, the metering cabinet is configured in a row of switch cabinets in an interspersed manner, and is electrically connected to the switch cabinets arranged on both adjacent sides through copper bars.

[0003] A conventional 35kV C-GIS metering cabinet consists of two units, namely a metering cabinet and a metering lifting cabinet. Therefore, two cabinet layout spaces are required on-site. However, arranging two cabinets will greatly increase the layout cost. Considering the space situation of the power distribution room and cost factors, a single-unit 35kV C-GIS metering cabinet is developed, which saves the space of the power distribution room and improves the economy of the product. Summary of the Utility Model

[0004] To solve the above problems, this article proposes a compact metering cabinet based on miniaturized design. The interior of the cabinet body of the metering cabinet includes a gas chamber and a control room. Inside the gas chamber, there are conductors and insulators. Inside the gas chamber, there is a current transformer. Outside the gas chamber, a voltage transformer is pluggably installed. The current transformer is conductively connected to the conductor. The voltage transformer is connected to the conductor inside the gas chamber through an inner cone socket and a three-position switch. The three-position switch is arranged inside the gas chamber and is linked to a three-position control mechanism. The three-position control mechanism is arranged outside the gas chamber and is conductively connected to the inside of the control room. Inside the control room, there are a meter and auxiliary components. Metering locks are provided on the surface of the door panel of the control room. By setting voltage and current transformers inside and outside the gas chamber of the original metering cabinet, the function of metering improvement is realized. And the external metering adjustment and control of the external voltage transformer are also realized through the three-position mechanism, so as to achieve linked metering improvement, solve the problem of insufficient space in the power distribution room, reduce the investment cost, and improve the market competitiveness of the product.

[0005] The shape of the cabinet body is a vertical rectangular cavity cabinet. Inside the cabinet body, several chambers are provided in a sealed and partitioned manner by partitions. The chambers include an air chamber, a control chamber, and an assembly chamber. The control chamber is integrally arranged vertically on the front of the cabinet body. An air chamber is arranged above the inner side of the control chamber, and an assembly chamber is arranged below the inner side of the control chamber. The air chamber and the assembly chamber are vertically flush with each other. An indentation voltage mutual inductor placement cavity is arranged at the top of the rear side of the air chamber. The voltage mutual inductor placement cavity is arranged outside the air chamber, and the bottom surface of the voltage mutual inductor placement cavity is connected to a three-position switch. Through the integrated cabinet body, it is convenient to combine the metering cabinet and the metering upgrade cabinet, connect and combine two cabinets with different functions, and facilitate solving the problem of insufficient space in the power distribution room.

[0006] The air chamber is a sealed inner cavity. Sealing rings are provided at the edges of the partitions of the air chamber. A pressure relief disc is penetratively arranged on the surface of the air chamber. The air chamber is connected to the pressure relief channel of the cabinet body through the pressure relief disc. Through the sealed air chamber, it is convenient to achieve an overall high-performance sealing effect on the air chamber. The pressure relief disc arranged on the sealed surface realizes the safety performance of the air chamber and prevents accidents in the air chamber.

[0007] The voltage transformer is connected and assembled to the inner cone socket in a plug-in manner. The inner cone socket is arranged on the bottom surface of the voltage mutual inductor chamber in a conductive manner. The inner cone socket is connected to the three-position switch through a wire. The three-position switch is connected to the voltage transformer in a linkage control manner. The voltage transformer is controlled by the three-position switch to trip, close, and ground. By connecting the voltage transformer to the three-position switch using a socket, it is convenient to ensure the connection stability and installation strength of the voltage transformer, and it can also achieve the linkage control of the three-position switch through the voltage transformer.

[0008] The three-position control mechanism is suspended in the middle of the inner surface of the control chamber. The three-position control mechanism is suspended between the air chamber and the assembly chamber. The three-position control mechanism is connected to the three-position switch in a linkage manner through a wire from the assembly chamber. By arranging the three-position control mechanism inside the control chamber, it is convenient to directly perform linkage control on the three-position control mechanism inside the control chamber on the front of the cabinet body, thereby achieving the control effect of metering upgrade.

[0009] The insulator is arranged between the three-position switch and the current transformer. The insulator realizes the insulation effect inside the air chamber, ensures the current conduction insulation between the three-position switch and the current transformer, and ensures that they do not interfere with each other.

[0010] Beneficial effects:

[0011] By installing voltage and current transformers inside and outside the gas chamber of the original metering cabinet, the function of metering improvement is achieved. Additionally, a three-position mechanism is used to externally meter, adjust, and control the external voltage transformer, enabling linked metering improvement, solving the problem of insufficient space in the power distribution room, reducing investment costs, and enhancing the market competitiveness of the product.

[0012] Through an integrated cabinet body, it is convenient to combine the metering cabinet and the metering improvement cabinet, connect and combine two cabinets with different functions, and facilitate solving the problem of insufficient space in the power distribution room.

[0013] Through a sealed gas chamber, it is convenient to achieve an overall high-performance sealing effect for the gas chamber. A pressure relief disc is also set on the sealing surface to realize the safety performance of the gas chamber and prevent accidents in the gas chamber.

[0014] By installing the three-position control machine inside the control room, it is convenient to directly perform linkage control on the three-position control mechanism inside the control room on the front of the cabinet body, thereby achieving the control effect of metering improvement.

[0015] Insulation inside the gas chamber is achieved through insulators, ensuring the diversion insulation between the three-position switch and the current transformer and ensuring that they do not interfere with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the internal cross-section of the side of a compact metering cabinet based on a miniaturized design;

[0017] In the figure: 1. Control room, 2. Gas chamber, 3. Three-position operating mechanism, 4. Conductor, 5. Current transformer, 6. Insulator, 7. Three-position switch, 8. Voltage transformer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments and drawings. The embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0019] Control room 1, gas chamber 2, three-position operating mechanism 3, conductor 4, current transformer 5, insulator 6, three-position switch 7, voltage transformer 8.

[0020] As Figure 1 shown;

[0021] A compact metering cabinet based on miniaturized design. The interior of the cabinet body of the metering cabinet includes an air chamber 2 and a control room 1. Inside the air chamber 2, there are a conductor 4 and an insulator 6. An instrument transformer 5 is provided inside the air chamber 2. The voltage transformer 8 is pluggably arranged outside the air chamber 2. The instrument transformer 5 is conductively connected to the conductor 4. The voltage transformer 8 is connected to the conductor 4 inside the air chamber 2 through an inner cone socket and a three-position switch 7. The three-position switch 7 is arranged inside the air chamber 2 and is linked to a three-position control mechanism. The three-position control mechanism is arranged outside the air chamber 2 and is conductively connected to the interior of the control room 1. Inside the control room 1, there are a meter and auxiliary components. Metering locks are provided on the surface of the door panel of the control room 1. The shape of the cabinet body is a vertical rectangular cavity cabinet. The interior of the cabinet body is sealed and partitioned by partitions into several chambers. The chambers include an air chamber 2, a control room 1, and an assembly room. The control room 1 is vertically integrally arranged on the front of the cabinet body. The air chamber 2 is arranged above the inner side of the control room 1, and the assembly room is arranged below the inner side of the control room 1. The air chamber 2 and the assembly room are vertically flush with each other. The top of the rear side of the air chamber 2 is recessed to form a voltage transformer placement cavity. The voltage transformer placement cavity is arranged outside the air chamber 2, and the bottom surface of the voltage transformer placement cavity is connected to the three-position switch 7. The air chamber 2 is a sealed inner cavity chamber. Sealing rings are provided at the edges of the partitions of the air chamber 2. A pressure relief disc is penetratively arranged on the surface of the air chamber 2. The air chamber 2 is connected to the pressure relief channel of the cabinet body through the pressure relief disc. The voltage transformer 8 is pluggably and conductively assembled with the inner cone socket. The inner cone socket is conductively arranged on the bottom surface of the voltage transformer chamber and is connected to the three-position switch 7 through a wire. The three-position switch 7 is linked and controlled to be linked with the voltage transformer 8. The voltage transformer 8 is linked and controlled by the three-position switch 7 to trip, close, and ground. The three-position control mechanism is suspended in the middle of the inner surface of the control room 1. The three-position control mechanism is suspended between the air chamber 2 and the assembly room. The three-position control mechanism is linked to the three-position switch 7 through a wire from the assembly room. The insulator 6 is arranged between the three-position switch 7 and the instrument transformer 5.

[0022] Implementation example;

[0023] Sealing rings are provided at the joints of the air chamber 2. Pressure relief discs are provided on the outside of the air chamber 2. Each pressure relief disc is connected to a pressure relief channel designed in the cabinet. A current transformer 5 for measurement is installed in the air chamber 2. The plug-in voltage transformer 8 for measurement is arranged outside the air chamber 2 and is connected to the primary conductor 4 in the air chamber 2 through an inner cone socket via a three-position switch 7. The three-position switch 7 where the voltage transformer 8 is arranged is used to operate opening, closing and grounding. A three-position operating mechanism 3 is provided outside the air chamber 2 to control the opening, closing and grounding of the three-position. The control room 1 is used to control the three-position mechanism, install various auxiliary components and measuring meters. Each door panel is equipped with a measurement lock, which solves the problem of insufficient space in the power distribution room, reduces the investment cost and improves the market competitiveness of the product.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compact metering cabinet based on miniaturized design, wherein the cabinet body of the metering cabinet includes an air chamber and a control chamber, and conductors and insulators are arranged inside the air chamber, characterized in that: A current transformer is provided inside the air chamber, and a voltage transformer is provided on the outside of the air chamber in a plug-in manner. The current transformer is connected to the conductor in a conductive manner, and the voltage transformer is connected to the conductor inside the air chamber through an inner cone socket and a three-position switch. The three-position switch is arranged on the inside of the air chamber, and the three-position switch is linked to a three-position control mechanism. The three-position control mechanism is arranged on the outside of the air chamber, and the three-position control mechanism is conductively connected to the inside of the control room. A meter and auxiliary components are provided inside the control room, and a metering lock is provided on the surface of the door panel of the control room.

2. A compact metering cabinet based on miniaturized design according to claim 1, characterized in that: The cabinet is in the shape of a vertical rectangular cavity cabinet, and a plurality of chambers are provided inside the cabinet through partition sealing separations. The chambers include an air chamber, a control chamber and an assembly chamber. The control chamber is vertically integrated on the front of the cabinet, an air chamber is provided on the upper inner side of the control chamber, and an assembly chamber is provided on the lower inner side of the control chamber. The air chamber and the assembly chamber are vertically flush with each other, and a voltage mutual inductance placement cavity is provided in a concave manner on the top of the rear side of the air chamber. The voltage mutual inductance placement cavity is provided on the outer side of the air chamber, and the bottom surface of the voltage mutual inductance placement cavity is connected to the three-position switch.

3. According to claim 1, a compact metering cabinet based on miniaturization design is characterized in that: The air chamber is a sealed inner chamber, and sealing rings are arranged at the edges of the partitions of the air chamber. A pressure relief disk is arranged through the surface of the air chamber, and the air chamber is connected to the pressure relief channel of the cabinet through the pressure relief disk.

4. A compact metering cabinet based on miniaturization design according to claim 2, characterized in that: The plug-in type of voltage transformer is connected to the inner cone socket conductive assembly, the conductive type of the inner cone socket is arranged on the bottom surface of the voltage transformer room, the inner cone socket is connected to the three-position switch through a wire, the three-position switch linkage control type is linked to the voltage transformer, and the voltage transformer is controlled by the three-position switch linkage to open, close and ground.

5. A compact metering cabinet based on miniaturization design according to claim 2, characterized in that: The three-position control mechanism is suspended in the middle of the inner surface of the control room, suspended between the air chamber and the assembly room, and connected to the three-position switch from the assembly room through a wire.

6. A compact metering cabinet based on miniaturization design according to claim 1, characterized in that: The insulator is arranged between the three-position switch and the current transformer.

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