CN217307064U

CN217307064U - Complete equipment on post

Info

Publication number: CN217307064U
Application number: CN202220007473.4U
Authority: CN
Inventors: 吴恒中; 王友根; 陈友智
Original assignee: Jiangsu Waneng High Voltage Electric Co ltd
Current assignee: Jiangsu Waneng High Voltage Electric Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-08-26
Anticipated expiration: 2032-01-05

Abstract

The utility model relates to a complete sets on post, its characterized in that: the circuit breaker comprises a circuit breaker, a current transformer, an isolating switch and a bracket; the circuit breaker, the current transformer and the isolating switch are arranged on the bracket; the utility model integrates the breaker, the current transformer and the isolating switch together through reasonable layout to form a combined electrical appliance, thereby meeting the use requirements of fault isolation and maintenance; the complete device can be packed and transported in a split way, so that the transportation requirements of remote areas and mountainous areas are met; the modular assembly, monomer weight are lighter, and on-the-spot hoist device that can use installs.

Description

Complete equipment on post

Technical Field

The utility model relates to a combined electrical apparatus technical field especially relates to a complete sets on post.

Background

An outlet line of a small hydropower station generally adopts an overhead line, the overhead line from the hydropower station to a power transmission main line belongs to hydropower station management, the management level of the overhead line is far lower than that of a power supply company, and a main power transmission line is tripped due to the fact that a line governed by the hydropower station has a ground fault, so that a group of fault isolation devices are urgently needed to be additionally arranged at the connection position (T joint) of the hydropower station line and the main line.

The circuit breaker, the current transformer and the isolating switch applied in the transformer substation generally belong to a floor-mounted structure, and have higher requirements on a mounting foundation and spatial layout. It is imperative to develop a fault isolation kit suitable for column installation.

The following disadvantages exist with the conventional design according to the equipment layout of the substation:

1) the occupied area is large, and the land acquisition cost is high; 2) the T joint is generally located in remote areas or mountain areas, and the transformer substation equipment is large in size and heavy in weight and cannot be transported to the site; 3) the T contact site cannot use large-scale equipment and a crane, and cannot meet the installation requirement of common substation equipment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a complete sets on post, it is abominable to solve general transformer substation's setting position geographical environment, designs inconvenient problem according to the equipment overall arrangement in the transformer substation.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a complete sets on post, its innovation point lies in: the circuit breaker comprises a circuit breaker, a current transformer, an isolating switch and a bracket; the circuit breaker, the current transformer and the isolating switch are arranged on the bracket;

the circuit breaker comprises an insulating phase column, a cross beam and an operating mechanism; the bottom end of the insulated phase column is arranged on the upper surface of the cross beam; the operating mechanism is hoisted on the lower surface of the cross beam through a bolt; a transmission connecting rod is arranged in the beam and is used for mechanical linkage between the operating mechanism and the insulating phase column to realize the opening and closing functions of the circuit breaker;

the current transformer is of a straight-through structure, is arranged at a wire outlet end of the circuit breaker and is fastened and limited through the wire outlet terminal; the primary part of the current transformer realizes current signal acquisition through an outgoing conducting rod of the circuit breaker; the current transformer comprises a fully insulated coil and an insulated strut; the fully-insulated wire package and the insulated support are poured together through epoxy resin, and silicon rubber is wrapped outside the fully-insulated wire package and the insulated support, so that the insulating property and the weather resistance are realized;

the isolating switch is of a horizontal vertical open type structure; the isolating switch comprises a conductive arm, an operating insulator, a wiring terminal, a supporting insulator and an operating crank arm; metal joints are designed at two ends of the operating insulator, the metal joint at one end is connected with the conductive arm through a cylindrical pin, and the metal joint at one end is connected with the operating crank arm through the cylindrical pin, so that the three parts are linked; the conductive arm is tightly attached to the surface of the wiring terminal under the action of the compression spring to realize the conduction between the conductive arm and the wiring terminal, and the conductive arm and the thickness direction of the wiring terminal are vertically arranged; the wiring terminal is fixed on the support insulator through a bolt; the outgoing line terminal, the conductive arm and the wiring terminal of the insulating phase column of the circuit breaker form a conductive loop.

Furthermore, the insulating phase column is a full insulating phase column adopting a composite insulating technology; the beam is a totally enclosed beam; the operating structure is a maintenance-free spring operating mechanism.

Furthermore, the support is of a rectangular structure formed by assembling channel steel and bent plates.

Furthermore, an external thread is arranged on a conducting rod of the circuit breaker, and the current transformer and the insulating phase column are fastened together through a wire outlet terminal; and a secondary cable is integrated in the insulating support column and used for collecting and transmitting current signals.

The utility model has the advantages of:

1) the utility model integrates the breaker, the current transformer and the isolating switch together through reasonable layout to form a combined electrical appliance, thereby meeting the use requirements of fault isolation and maintenance; the complete device can be packed and transported in a split way, so that the transportation requirements of remote areas and mountainous areas are met; the single bodies are assembled in a modularized way, so that the weight of the single bodies is light, and the single bodies can be installed by using a hoisting device on site;

2) the utility model adopts a vacuum arc extinguishing mode, the insulating phase column adopts a composite insulating structure, the transmission connecting rod is arranged inside the cross beam, the operating mechanism is arranged at the bottom of the cross beam, and the structure layout is compact; the current transformer adopts a straight-through structure, and a primary conductor uses an outgoing line conducting rod of a circuit breaker, so that the overall weight of the complete device can be greatly reduced; the isolating switch adopts a horizontal and vertical open type structure, and one of the post insulators is grounded by a current transformer, so that the volume of the complete device is further reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a structural diagram of the column complete equipment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

A pole set as shown in fig. 1, comprising a circuit breaker 1, a current transformer 2, a disconnector 3 and a stand 4; the circuit breaker 1, the current transformer 2 and the disconnector 3 are mounted on a support 4.

The circuit breaker 1 comprises an insulating phase column 11, a beam 12 and an operating mechanism 13; the bottom end of the insulated phase column 11 is arranged on the upper surface of the beam 12; the operating mechanism 13 is hung on the lower surface of the cross beam 12 through a bolt; and a transmission connecting rod is arranged in the beam 12 and used for mechanical linkage between the operating mechanism 13 and the insulating phase column 11, so that the opening and closing functions of the circuit breaker 1 are realized.

The current transformer 2 is of a straight-through structure, and the current transformer 2 is installed at a wire outlet end of the circuit breaker 1 and is fastened and limited through the wire outlet terminal; the current transformer 2 realizes current signal acquisition through an outgoing line conducting rod of the circuit breaker 1 at a time part; the current transformer 2 comprises a fully insulated coil 21 and an insulated strut 22; the fully insulated wire package 21 and the insulated strut 22 are poured together through epoxy resin, and silicon rubber is wrapped outside the fully insulated wire package, so that the insulating property and the weather resistance are realized.

The isolating switch 3 is of a horizontal vertical open type structure; the isolating switch 3 comprises a conductive arm 31, an operating insulator 32, a connecting terminal 33, a supporting insulator 34 and an operating crank arm 35; metal joints are designed at two ends of the operating insulator 32, the metal joint at one end is connected with the conductive arm through a cylindrical pin, and the metal joint at one end is connected with the operating crank arm 35 through the cylindrical pin, so that the linkage of the three is realized; the conductive arm 31 is tightly attached to the surface of the wiring terminal under the action of a compression spring to realize the conduction between the conductive arm and the wiring terminal, and the conductive arm 31 is arranged perpendicular to the thickness direction of the wiring terminal; the connection terminal 33 is fixed on the support insulator 34 by a bolt; the outlet terminal of the insulating phase leg 11 of the circuit breaker 1, the conductive arm 31 and the connecting terminal 33 form a conductive loop.

The insulated phase column 11 is a fully insulated phase column adopting a composite insulation technology; the beam 12 is a totally enclosed beam; the operating structure 13 is a maintenance-free spring operated knot mechanism.

The support 4 is a rectangular structure assembled by channel steel and bending plates.

An external thread is arranged on a conducting rod of the circuit breaker 1, and the current transformer 2 and the insulated phase column 11 are fastened together through an outlet terminal; the insulating support column 22 is internally integrated with a secondary cable for collecting and transmitting current signals.

The utility model discloses a theory of operation is: an operating mechanism in the circuit breaker is immediately switched off after receiving a switching-off signal, and an insulating phase column arc extinguish chamber in the circuit breaker is disconnected in a mechanical transmission mode, so that the fault of a branch circuit of a T-junction circuit is cut off, and the power failure of a trunk circuit is avoided; after the T-connection line is powered off, the isolating switch is operated by manual or electric operation of the connecting lever in the opening state of the circuit breaker, and the operating connecting lever drives the operating insulator to rotate by rotary motion, so that the opening and closing operation of the isolating switch is realized; the disconnecting switch can overhaul and maintain the T-connection circuit in a switching-off state.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A complete set of devices on a column is characterized in that: the circuit breaker comprises a circuit breaker, a current transformer, an isolating switch and a bracket; the circuit breaker, the current transformer and the isolating switch are arranged on the bracket;

the circuit breaker comprises an insulating phase column, a cross beam and an operating mechanism; the bottom end of the insulated phase column is arranged on the upper surface of the cross beam; the operating mechanism is hung on the lower surface of the cross beam through a bolt; a transmission connecting rod is arranged in the beam and is used for mechanical linkage between the operating mechanism and the insulating phase column to realize the opening and closing functions of the circuit breaker;

the current transformer is of a straight-through structure, is arranged at a wire outlet end of the circuit breaker and is fastened and limited through the wire outlet terminal; the primary part of the current transformer realizes current signal acquisition through an outgoing line conducting rod of the circuit breaker; the current transformer comprises a fully insulated coil and an insulated strut; the fully-insulated wire package and the insulated support are poured together through epoxy resin, and silicon rubber is wrapped outside the fully-insulated wire package and the insulated support, so that the insulating property and the weather resistance are realized;

the isolating switch is of a horizontal vertical open type structure; the isolating switch comprises a conductive arm, an operating insulator, a wiring terminal, a supporting insulator and an operating crank arm; metal joints are designed at two ends of the operating insulator, the metal joint at one end is connected with the conductive arm through a cylindrical pin, and the metal joint at one end is connected with the operating crank arm through the cylindrical pin, so that the three are linked; the conductive arm is tightly attached to the surface of the wiring terminal under the action of the compression spring to realize the conduction between the conductive arm and the wiring terminal, and the conductive arm and the thickness direction of the wiring terminal are vertically arranged; the wiring terminal is fixed on the support insulator through a bolt; the outlet terminal, the conductive arm and the wiring terminal of the insulating phase column of the circuit breaker form a conductive loop.

2. A kit on a column as claimed in claim 1, wherein: the insulating phase column is a full-insulating phase column adopting a composite insulating technology; the beam is a totally enclosed beam; the operating structure is a maintenance-free spring operating mechanism.

3. A kit as claimed in claim 1, wherein: the support is a rectangular structure assembled by channel steel and bending plates.

4. A kit as claimed in claim 1, wherein: an external thread is arranged on a conducting rod of the circuit breaker, and the current transformer and the insulating phase column are fastened together through an outlet terminal; and a secondary cable is integrated in the insulating support column and used for collecting and transmitting current signals.