CN104934859A - Bus connecting device of medium voltage switchgear and method of connecting bus by utilizing bus connecting device - Google Patents

Abstract

The invention discloses a bus connecting device of a medium voltage switchgear and a method of connecting a bus by utilizing the bus connecting device. The bus connecting device comprises iron cores, connecting copper clamping plates, spring coils and limiting bolts; the iron cores are respectively inserted and fixed into a right hole and a left hole of each connecting copper clamping plate; the surfaces of the spring coils are coated with insulating coatings; the spring coils are wound on the iron cores, and are in contact with the connecting copper clamping plates, and the two spring coils are communicated; and two buses are clamped and fixed together by utilizing two connecting copper clamping plates, the limiting bolts and the spring coils. According to the bus connecting device, buses of two unit switch cabinets can be quickly connected together, so that the bus connecting device is simple to operate; the larger current that passes through the buses, the greater the clamping force of the connecting device, and the more reliable the connection between the buses, and therefore, the bus connecting device is a very reliable connecting mode.

Description

Medium Voltage Switchgear bus connecting device and utilize the method for this device connection bus

Technical field

The present invention relates to a kind of switch cabinet connecting device, relate in particular to a kind of Medium Voltage Switchgear bus connecting device and utilize the method for this device connection bus.

Background technology

Along with the development of electric power manufacturing technology and the utilization of new material, the switch cubicle volume of 10kV is more and more less, and the connected mode of the switch cabinet bus of routine has two kinds: one is drawn by switch cabinet top by bus and adopts nut to connect after installing insulating sleeve pipe, or in the side of two cabinets, bus is extended out, then nut is adopted directly to connect two pieces of busbars, but this kind of connected mode could realize because all needing reserved enough connection space, and complexity is higher when connecting, therefore joint efficiency is also lower.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of bus of the two unit switch cabinets separated can being linked together fast, simple to operate, and the Medium Voltage Switchgear bus connecting device that can firmly and reliably be fixed together and utilize the method for described device connection bus.

For achieving the above object, the invention provides a kind of Medium Voltage Switchgear bus connecting device, comprise the first iron core, the second iron core, connect copper clamping plate; First spring coil, the second spring coil and limited bolt, is characterized in that: described first iron core and described second iron core insert and in the right hole being fixed on described connection copper clamping plate and left hole respectively; Described first spring coil is wrapped on described first iron core, and described first spring coil free end contacts with described connection copper clamping plate, and link is connected with described second spring coil link; Described second spring coil is wrapped on described second iron core, and described second spring coil free end contacts with described connection copper clamping plate, and link is connected with described first spring coil link; Described first spring coil, the second spring coil surface all scribble insulating coating; Bus waiting, through the spacing hole of described connection copper clamping plate, is fixed between two pieces of connection copper clamping plate being provided with iron core and spring coil by described limited bolt.

Preferably, described first iron core and described second iron core all scribble insulating coating.

Preferably, described first iron core and described second iron core quantity are respectively 2.

Preferably, described right hole and described left hole quantity are respectively 2.

Present invention also offers the method utilizing Medium Voltage Switchgear bus connecting device connection bus, comprising:

(1) two bus inserts respectively and connects Medium Voltage Switchgear bus connecting device step;

(2) Medium Voltage Switchgear bus connecting device by limited bolt and spring coil by two bus clamping step;

(3) to spring coil On current step;

(4) the generation opposite magnetic pole of upper and lower two corresponding iron cores, makes iron core to bus central motion, connects copper clamping plate and is pressed on step on two buses.

Compared with prior art, the beneficial effect that the present invention has is: the present invention adopts the jockey of plug-in, only two pieces of busbars need be inserted jockey, save the also cabinet connectivity problem of factory, erecting bed switch cubicle greatly, and the reliability connected increases along with the increase of the electric current by switch cubicle, it is one connected mode very reliably.

Accompanying drawing explanation

Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, is not construed as limiting the invention with inventive embodiment one.In the accompanying drawings:

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the vertical view connecting copper clamping plate 4 in Fig. 1;

In figure: 1, the first iron core; 1 ' second iron core; 2, insulating coating; 3, the first spring coil; 3 ', second spring coil; 4, copper clamping plate are connected; 5, right hole; 5 ', left hole; 6, limited bolt; 6 ', spacing hole; 7, the first spring coil free end; 7 ', second spring coil free end; 8, the first spring coil link end; 8 ', second spring coil link; 9, the copper busbar of I cabinet rectangle; 9 ', the copper busbar of II cabinet rectangle.

Embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

As shown in Figure 1 with shown in Fig. 2, a kind of Medium Voltage Switchgear bus connecting device, is specifically combined by the first iron core 1, second iron core 1 ', connection copper clamping plate 4, first spring coil 3, second spring coil 3 ' and limited bolt 6.First iron core 1 and the second iron core 1 ' surface all scribble insulating coating 2, and such first iron core 1 and the second iron core 1 ' and the first spring coil 3 and the second spring coil 3 ' have just insulated better; Described connection copper clamping plate 4 are provided with right hole 5, left hole 5 ' and spacing hole 6 ', fix wherein for the first iron core 1, second iron core 1 ', limited bolt 6; First spring coil 3 and the second spring coil 3 ' are respectively equipped with the first spring coil free end 7, second spring coil free end 7 ' and the first spring coil link 8, second spring coil link 8 ', first spring coil 3 and the second spring coil 3 ' surface all scribble insulating coating, are not energized when use with the first iron core 1 and the second iron core 1 '.During use, need two pieces to connect copper clip board engagement and use clamp rectangular bus.

Particularly, the first iron core 1 and the second iron core 1 ' insert and in the right hole 5 being fixed on described connection copper clamping plate 4 and left hole 5 ' respectively; Be wrapped on the first iron core 1 by first spring coil 3, the free end 7 of the first spring coil 3 is contacted with connection copper clamping plate 4, and link 8 is connected with the second spring coil 3 ' link 8 ';

Then, the second spring coil 3 is wrapped on the second iron core 1 ', and contacted with connection copper clamping plate 4 by the free end 7 ' of the second spring coil 3 ', link 8 ' first spring coil link 8 connects; Such first spring coil 3 has just been communicated with by two spring links with the second spring coil 3 '.

Finally, get two pieces and insert iron cores and winding spring coil connects copper clamping plate 4 on iron core, by limited bolt 6 through the spacing hole 6 ' connecting copper clamping plate 4, rectangular copper bus-bar waiting is fixed between two pieces of identical connection copper clamping plate 4, such rectangular copper bus-bar just by these two pieces connect copper clamping plate 4 clamp and fixing together.

In order to fix bus better, the first iron core 1 and the second iron core 1 ' quantity are 2, and correspondingly, the right hole 5 and the left hole 5 ' quantity that connect copper clamping plate 4 are also 2, and such rectangular copper bus-bar is just clamped better by these two pieces connection copper clamping plate 4 and fixes together

As shown in Figure 2, the copper busbar 9 of I cabinet rectangle and the copper busbar 9 ' of II cabinet rectangle are respectively the bus of two independently switch cubicles, only need by two buses fech connection device respectively during connection, when cabinet bus does not have electric current through out-of-date, rectangular bus bar is clamped by the elastic force of limited bolt 6 and the first spring coil 3 and the second spring coil 3 ' by jockey, makes two pieces to connect copper clamping plate 4 and links together with the copper busbar 9 of I cabinet rectangle and the copper busbar 9 ' of II cabinet rectangle.

Certainly, can On current, when there being electric current to flow through bus, because of the first spring coil 3 and the second spring coil 3 ' free end all be connected copper coin and contact, the effect of shunting can be produced, portion of electrical current is had to flow to C point by the free end A point of spring coil 3 through B point, the electric current flowing through spring coil can make iron core band be magnetic because of galvanomagnetic effect, the magnetic pole of upper and lower two corresponding iron cores is contrary, one is N pole, one is S pole, pulling force is produced because the two poles of the earth attract each other, make two iron cores further to copper busbar central motion, thus compression two spring coil produces elastic force, elastic force makes to connect copper clamping plate and is pressed on better on bus.The electric current of flow bus is larger, and its magnetic force produced is larger, and the elastic force that spring produces is also larger, and the connection of bus is also more reliable.

The foregoing is only the preferred embodiment of invention, not in order to restriction invention, within all spirit in invention and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a Medium Voltage Switchgear bus connecting device, comprises the first iron core (1), the second iron core (1 '), connects copper clamping plate (4); First spring coil (3), the second spring coil (3 ') and limited bolt (6), is characterized in that: described first iron core (1) and described second iron core (1 ') insert and in the right hole (5) being fixed on described connection copper clamping plate (4) and left hole (5 ') respectively; Described first spring coil (3) is wrapped on described first iron core (1), described first spring coil free end (7) contacts with described connection copper clamping plate (4), and link (8) is connected with described second spring coil link (8 '); Described second spring coil (3) is wrapped on described second iron core (1 '), described second spring coil free end (7 ') contacts with described connection copper clamping plate (4), and link (8 ') is connected with described first spring coil link (8); Described first spring coil (3), the second spring coil (3 ') surface all scribble insulating coating; Bus waiting, through the spacing hole (6 ') of described connection copper clamping plate (4), is fixed between two pieces of connection copper clamping plate (4) being provided with iron core and spring coil by described limited bolt (6).

2. Medium Voltage Switchgear bus connecting device according to claim 1, is characterized in that: described first iron core (1) and described second iron core (1 ') all scribble insulating coating (2).

3. Medium Voltage Switchgear bus connecting device according to claim 1, is characterized in that: described first iron core (1) and described second iron core (1 ') quantity are respectively 2.

4. Medium Voltage Switchgear bus connecting device according to claim 1, is characterized in that: described right hole (5) and described left hole (5 ') quantity are respectively 2.

5. utilize a method for any one Medium Voltage Switchgear bus connecting device connection bus described in claim 1 to 4, it is characterized in that, comprising:

(1) two bus inserts respectively and connects Medium Voltage Switchgear bus connecting device step;

(2) Medium Voltage Switchgear bus connecting device by limited bolt and spring coil by two bus clamping step;

(3) to spring coil On current step;

(4) the generation opposite magnetic pole of upper and lower two corresponding iron cores, makes iron core to bus central motion, connects copper clamping plate and is pressed on step on two buses.