CN210925760U

CN210925760U - Capacitor bank connected by all compression-joint type wiring terminals

Info

Publication number: CN210925760U
Application number: CN201922473974.2U
Authority: CN
Inventors: 秦华忠; 杨结春; 陆雪花; 梁琮
Original assignee: Guilin Power Capacitor Co ltd
Current assignee: Guilin Power Capacitor Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-03
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a capacitor bank which is connected by a crimping type connecting terminal, which comprises a profile steel frame and a plurality of capacitor units; the capacitor units are divided into three rows which are respectively fixedly installed on the section steel framework, each row of the capacitor units at least comprises three capacitor units, and the capacitor units in the same row are connected in parallel to form a phase of electricity and then are connected in series to the bus. The utility model has the advantages that: 1. the rated current of the connecting wire between the capacitor units is reduced, so that the existing connecting wire can meet the operation requirement; 2. the capacitor bank is compact in arrangement and small in occupied area. The capacitor bank connected with the Harvard wire clamp can be directly replaced according to the technical scheme without changing the arrangement of the capacitor bank connected with the Harvard wire clamp; 3. the method has the advantages of no new parts, few parts, simple and convenient installation and low cost; 4. all the crimping type wiring terminals of the capacitor bank are connected, so that the capacitor bank is more reliable in operation.

Description

Capacitor bank connected by all compression-joint type wiring terminals

Technical Field

The utility model relates to a power capacitor technical field, concretely relates to whole capacitor bank that adopts crimping type binding post to connect.

Background

At present, a capacitor unit wiring terminal adopts a connection mode of a Harvard wire clamp, copper stranded wires are adopted between capacitor units for connection, the Harvard wire clamp is easy to loosen, so that the joint generates heat in the electrified operation process of the capacitor unit, and part of power grid companies require the capacitor unit wiring terminal to adopt the connection mode of a crimping type wiring terminal. If direct change crimping type binding post into with the hafu fastener directly on the former scheme of capacitor bank, the problem that faces has:

1. because the metal pipe at the tail part of the crimping type wiring terminal is longer, a certain space distance is needed for installing the copper stranded wire, and the distance between two adjacent capacitor units needs to be increased (the original route is that two ends of the copper stranded wire are respectively connected with the two adjacent capacitor units through the crimping type wiring terminal), so that the occupied area and the cost of the whole capacitor bank are greatly increased;

2. after the crimping type wiring terminal is adopted, the capacitor units can only be connected by adopting a single copper stranded wire, when the rated current exceeds the limit value of the single copper stranded wire, the current wiring mode is a busbar structure, namely, a busbar is arranged at each phase, and each capacitor unit leads to the busbar independently.

SUMMERY OF THE UTILITY MODEL

To sum up, for overcoming prior art's not enough, the utility model aims to solve the technical problem that a capacitor bank that all adopt crimping type binding post to connect is provided.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a capacitor bank which is connected by a crimping type wiring terminal comprises a profile steel frame and a plurality of capacitor units; the capacitor units are divided into three rows and are respectively fixedly arranged on the profile steel frame, and each row of the capacitor units at least comprises three capacitor units; and buses connected with an alternating current power supply are respectively arranged at positions corresponding to each row of the capacitor units on two sides of the section steel frame, and all the capacitor units in the same row are connected in parallel to form a phase of electricity and then are connected to the buses in series.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

furthermore, each row of the capacitor units comprises three capacitor units, in the same row of the capacitor units, two capacitor units at two sides are connected through a first connecting line and then connected in series to the bus, and the capacitor unit at the middle position is independently connected in series to the bus through a second connecting line.

Further, the first connecting wire and the second connecting wire have the same structure and comprise copper stranded wires and crimping type connecting terminals; and the crimping type wiring terminals are respectively and fixedly arranged at two ends of the copper stranded wire.

Further, each row of the capacitor units comprises more than three capacitor units, every other capacitor unit or more than one capacitor unit in the same row of the capacitor units are connected through a first connecting line, and the capacitor units in the same row are connected in parallel.

Furthermore, in the same row of capacitor units, any two capacitor units are respectively connected to the bus through a second connecting wire, so that the same row of capacitor units are connected in parallel and then connected in series to the bus.

Further, the first connecting wire and the second connecting wire have the same structure and comprise copper stranded wires and crimping type connecting terminals; and the crimping type wiring terminals are fixedly arranged at two ends of the copper stranded wire.

Further, the bus bar is fixed at the corresponding position of the side part of the section steel frame in an insulating mode through a support insulator.

The utility model has the advantages that:

1. the rated current of the connecting wire between the capacitor units is reduced, so that the existing connecting wire can meet the operation requirement;

2. the capacitor bank is compact in arrangement and small in occupied area. The capacitor bank connected with the Harvard wire clamp can be directly replaced according to the technical scheme without changing the arrangement of the capacitor bank connected with the Harvard wire clamp;

3. the method has the advantages of no new parts, few parts, simple and convenient installation and low cost;

4. all the crimping type wiring terminals of the capacitor bank are connected, so that the capacitor bank is more reliable in operation.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic view of a section steel frame;

fig. 3 is a schematic view of a first or second coupling line.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the structure comprises a section steel frame, 2, a capacitor unit, 3, a bus, 4, a first connecting wire, 5, a second connecting wire, 6, a copper stranded wire, 7, a crimping type connecting terminal, 8 and a post insulator.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in figures 1 and 2, the capacitor bank which is connected by all compression-type connecting terminals comprises a steel section frame 1 and a plurality of capacitor units 2, wherein the capacitor units 2 are divided into three rows and are respectively fixedly installed on the steel section frame 1, each row of the capacitor units 2 at least comprises three capacitor units 2, buses 3 connected with an alternating current power supply are respectively arranged at positions corresponding to each row of the capacitor units 2 on two sides of the steel section frame 1, and the buses 3 are fixed at corresponding positions on the side portions of the steel section frame 1 in an insulating mode through supporting insulators 8. The capacitor units 2 in the same row are connected in parallel to form one phase of electricity, and then the phase of electricity is connected to the bus 3 in series (fig. 1 includes 15 capacitor units 2, and each phase of electricity is connected in 1 series and 5 parallel), specifically as follows:

(1) when each row of the capacitor units 2 comprises three capacitor units 2, in the same row of the capacitor units 2, two capacitor units 2 at two sides are connected through a first connecting wire 4 and then connected in series to the bus 3, and the capacitor unit 2 at the middle position is separately connected through a second connecting wire 5 and connected in series to the bus 3.

(2) When each row of the capacitor units 2 comprises more than three capacitor units 2, every two capacitor units 2 of every other one or more than one capacitor units 2 in the same row of the capacitor units 2 are connected through a first connecting line 4, so that the capacitor units 2 in the same row are connected in parallel. In the same row of capacitor units 2, any two capacitor units 2 are respectively connected to the bus 3 through second connecting wires 5, so that the same row of capacitor units 2 are connected in parallel and then connected in series to the bus 3.

As shown in fig. 3, the first connecting wire 4 and the second connecting wire 5 have the same structure, and include a copper stranded wire 6 and a crimp-type terminal 7. The crimping type wiring terminals 7 are fixedly mounted at two ends of the copper stranded wire 6.

Through the design, in the same row of capacitor units/the same phase of electricity, the connection of two adjacent capacitor units 2 is cancelled, namely, each first connecting wire 4 at least strides over one capacitor unit 2, so that on the premise that the distance between the two adjacent capacitor units 2 is not changed, the crimping type wiring terminals 7 at the two ends of the copper stranded wire 6 are ensured to have enough installation space, and finally, the compact arrangement and small floor area of the capacitor bank are realized. Arrange unchangeably with the capacitor bank who takes the connected mode of haversian fastener, can directly press the technical scheme of the utility model change the capacitor bank who takes haversian fastener to connect.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A capacitor bank which is connected by adopting a crimping type wiring terminal is characterized by comprising a profile steel frame (1) and a plurality of capacitor units (2); the capacitor units (2) are divided into three rows and are respectively fixedly mounted on the section steel framework (1), and each row of the capacitor units (2) at least comprises three capacitor units (2); and buses (3) used for connecting an alternating current power supply are respectively arranged at positions, corresponding to each row of the capacitor units (2), on two sides of the section steel frame (1), and the same row of the capacitor units (2) are connected in parallel to form a phase of electricity and then are connected in series to the buses (3).

2. The capacitor bank connected by all crimping type connection terminals as claimed in claim 1, wherein each row of the capacitor units (2) comprises three capacitor units (2), and in the same row of the capacitor units (2), two capacitor units (2) at both side positions are connected by a first connection line (4) and then connected in series to the bus bar (3), and the capacitor unit (2) at the middle position is connected in series to the bus bar (3) by a second connection line (5) individually.

3. A capacitor bank connected by all crimp type connection terminals according to claim 2, wherein the first connection wire (4) and the second connection wire (5) are identical in structure and comprise a copper stranded wire (6) and a crimp type connection terminal (7); and the crimping type wiring terminals (7) are respectively and fixedly arranged at two ends of the copper stranded wire (6).

4. The capacitor bank connected by all crimping-type connection terminals as claimed in claim 1, wherein each row of said capacitor units (2) includes three or more said capacitor units (2), and every other one or more said capacitor units (2) in the same row of said capacitor units (2) are connected by a first connection line (4), thereby connecting the capacitor units (2) in the same row in parallel.

5. The capacitor bank connected by all crimping type connection terminals as claimed in claim 4, wherein any two of the capacitor units (2) in the same row of the capacitor units (2) are connected to the bus bar (3) by second connection lines (5), respectively, so that the capacitor units (2) in the same row are connected in parallel and then connected in series to the bus bar (3).

6. Capacitor bank which is connected with all crimp type connection terminals according to claim 5, characterized in that the first connection wire (4) and the second connection wire (5) are identical in structure and comprise copper strands (6) and crimp type connection terminals (7); and the crimping type wiring terminals (7) are fixedly arranged at two ends of the copper stranded wire (6).

7. A capacitor bank connected by all crimping type connection terminals according to any one of claims 1 to 6, characterized in that the bus bar (3) is insulated and fixed at the corresponding position of the side of the section steel frame (1) by post insulators (8).