CN115274371A - Circuit breaker - Google Patents

Abstract

The utility model provides a circuit breaker, includes load (1) and circuit breaker body (2), circuit breaker body (2) inside is provided with disconnected portion (2 a), disconnected portion (2 a) include two at least disconnected utmost point, circuit breaker body (2) with load (1) is connected, the both ends of load (1) respectively link to each other and have at least one disconnected utmost point, its characterized in that: the breaker comprises a breaker body (2), and is characterized in that a switching part (2 b) is arranged in the breaker body (2), a switching conductor (6) is arranged outside the breaker body (2), and the switching part (2 b) and the switching conductor (6) can change the anisotropic current in two breaking poles directly connected with the two ends of a load (1) into the same-direction current, so that the breaking capacity of the breaker is improved.

Description

Circuit breaker

Technical Field

The invention belongs to the technical field of low-voltage electric appliances, and particularly relates to a breaker, which enables the current directions of breaking poles of the breaker positioned at two ends of a load to be the same through a transfer plate, thereby improving the breaking performance of the breaker.

Background

With the development of new energy technology, higher requirements are put on low-voltage electrical appliance components, especially in a photovoltaic power supply direct current system, the rated working voltage of the low-voltage electrical appliance is even as high as DC1500V. The breaking performance of the circuit breaker can be improved by adopting a multi-breakpoint series connection method. Furthermore, when all the disjunction poles of the direct current molded case circuit breaker are at one end of the load, the current directions of all the disjunction poles can be the same by connecting the load side of one disjunction pole and the power supply side of the other disjunction pole in series.

However, when the two ends of the load connected with the direct current molded case circuit breaker have the breaking poles, the directions of currents in the two breaking poles connected with the load are opposite, so that the directions of arc currents in breakpoints of the two breaking poles are opposite, and the arcs repel each other. If the two arcs travel at different speeds, the slower arc may be repelled by the faster moving arc and may not reach the arc chute.

Disclosure of Invention

The invention aims to overcome the defect that when the two ends of the load connected with the existing direct current molded case circuit breaker are provided with the breaking poles, the current directions in the two breaking poles connected with the load are opposite, so that the arc current directions in the breakpoints of the two breaking poles are opposite, and arcs are mutually repelled, thereby reducing the breaking capacity of the circuit breaker.

Technical scheme

In order to achieve the above technical object, the present invention provides a circuit breaker, including a load and a circuit breaker body, where a breaking portion is arranged in the circuit breaker body, the breaking portion includes at least two breaking poles, the circuit breaker body is connected to the load, and two ends of the load are respectively connected to at least one breaking pole, and the circuit breaker is characterized in that: the breaker comprises a breaker body and is characterized in that a switching part is arranged in the breaker body, a switching conductor is arranged outside the breaker body, and the switching part and the switching conductor can change the anisotropic current in at least two breaking poles directly connected with the two ends of a load into the homodromous current, so that the breaking capacity of the breaker is improved.

The breaker comprises a load, a switching part, a switching conductor and short-circuit conductors, wherein the number of the short-circuit conductors corresponds to the number of disjunction poles which are not directly connected with two ends of the load, the disjunction poles which are directly connected with the load and other disjunction poles which are positioned on the same side of the load can be in short circuit by the short-circuit conductors in corresponding number, and currents in all disjunction poles in 3 disjunction poles and above breakers can be enabled to be in the same direction through the switching part, the switching conductor and the short-circuit conductors, so that the disjunction capacity of the breaker is improved.

Further, divide the branch portion at least including dividing utmost point one and dividing utmost point two, divide the both ends of utmost point one respectively corresponding binding post one and binding post two that set up, divide the both ends of utmost point two respectively corresponding binding post three and binding post four that set up, divide utmost point one and divide the utmost point two to be located the both ends of load and with load lug connection, each corresponding binding post five and binding post six that set up in the both ends of switching portion.

Furthermore, one end of the load is connected with a wiring terminal six of the switching part on the load side, and the other end of the load is directly connected with a wiring terminal two of the breaking electrode I on the load side;

one end of the power supply is connected with a wiring terminal five of the switching part, which is positioned on the power supply side, and the other end of the power supply is connected with a wiring terminal of one of the disjunction poles, which is positioned on the same end of the load, on the power supply side.

Further, the transition conductor includes a first transition conductor and a second transition conductor;

one end of the first switching conductor is connected with a wiring terminal on the load side of the switching part, and the other end of the first switching conductor is connected with a wiring terminal III on the power supply side of the second breaking electrode on the same end of the load as the switching part;

one end of the second switching conductor is connected with the wiring terminal on the power supply side of the switching part, and the other end of the second switching conductor is connected with the wiring terminal on the load side of one of the disjunction electrodes on the same end of the load as the switching part.

Furthermore, one end of each short-circuit conductor in the corresponding number of short-circuit conductors is connected with a wiring terminal on the load side of one of the disjunction electrodes, and the other end of each short-circuit conductor is connected with a wiring terminal on the power supply side of the other disjunction electrode on the same end of the load in the disjunction portion.

Furthermore, the switching part is arranged on the circuit breaker body and is positioned beside the second breaking electrode which is directly connected with the load through the first switching conductor.

Furthermore, one end of the first switching conductor is connected with a wiring terminal six on the load side of the switching part, and the other end of the first switching conductor is connected with a wiring terminal three on the power supply side of the disjunction electrode two on the same load side with the switching part.

One end of the second switching conductor is connected with a wiring terminal five on the power supply side of the switching part, and the other end of the second switching conductor is connected with a wiring terminal four on the load side of the second breaking electrode, which is located on the same end of the load as the switching part.

Furthermore, a wiring terminal six and a wiring terminal two which are connected with a load in the circuit breaker body are positioned on one side of the circuit breaker body, and a wiring terminal five and a wiring terminal one which are connected with a power supply in the circuit breaker body are positioned on the other side of the circuit breaker body;

and the sixth wiring terminal, the fifth wiring terminal, the second wiring terminal and the first wiring terminal are positioned on the outermost side of the circuit breaker body.

Further, still include the series connection mounting panel, the series connection mounting panel is installed in the bottom of circuit breaker body, short circuit conductor and switching conductor are located the space that the bottom of series connection mounting panel and circuit breaker body formed.

Further, the shorting conductor and the switching conductor are pre-arranged in the series mounting board.

Further, the short circuit conductor and the switching conductor are installed in a matched mode with the circuit breaker body, and the series connection installation plate is installed in a matched mode with the circuit breaker body.

Further, some of short circuit conductor and switching conductor preset in the mounting panel that establishes ties, and the rest does not preset in the mounting panel that establishes ties, the conductor part that does not preset in the mounting panel that establishes ties matches the installation with the circuit breaker body, the mounting panel that establishes ties matches the installation with the circuit breaker body.

Advantageous effects

According to the breaker provided by the invention, when the two ends of the load are provided with the breaking poles, the direction of the current in the two breaking poles directly connected with the load by the breaker is the same through the switching part and the switching conductor, so that arc extinction is facilitated, and the breaking performance of the breaker is improved. And two power end binding post are located circuit breaker one side, and two load end binding post are located the circuit breaker opposite side, and convenience of customers uses.

Drawings

Fig. 1a is a first schematic wiring diagram of a connecting circuit of two breaking pole circuit breakers in embodiment 1 of the invention;

fig. 1b is a schematic perspective view of a three-pole circuit breaker being used to retrofit two breaker-pole circuit breakers in embodiment 1 of the present invention;

FIG. 1c is a schematic view showing the mounting of a serial mounting plate, a through conductor, and an insulator in example 1 of the present invention;

fig. 2 is a second schematic wiring diagram of a connecting circuit of two breaking pole circuit breakers in embodiment 2 of the present invention;

fig. 3a is a first schematic wiring diagram of a connecting circuit of three breaking pole circuit breakers in embodiment 3 of the present invention;

fig. 3b is a schematic perspective view of a four-pole circuit breaker being used to retrofit three circuit breaker with a three-pole breaking circuit in embodiment 3 of the present invention;

fig. 3c is a schematic view of the installation of the series connection installation plate, the short-circuit conductor, the switching conductor and the insulating member in embodiment 3 of the present invention;

fig. 4 is a second schematic wiring diagram of a connecting circuit of three breaking pole circuit breakers in embodiment 4 of the present invention;

fig. 5a is a third schematic wiring diagram of a connecting circuit of three breaking pole circuit breakers in embodiment 5 of the present invention;

fig. 5b is a schematic perspective view of three disconnecting switch poles in which switching parts are independently provided according to embodiment 5 of the present invention;

FIG. 6 is a schematic diagram of the connection circuit of three breaker connecting circuits with three poles, wherein the power supply side and the load side are not arranged on the outermost sides of the two sides of the breaker.

FIG. 7a is a first schematic diagram of the connection circuit of the four breaker connecting circuits with the power supply side and the load side not at the outermost sides of the two side ends of the breaker.

FIG. 7b is a second schematic diagram of the connection circuit of the four open-pole circuit breakers of the present invention, wherein the power source side and the load side are not located at the outermost sides of the two sides of the breaker.

FIG. 7c is a third schematic diagram of the connection circuit of the four breaker connecting circuits with the power supply side and the load side not located at the outermost sides of the two sides of the breaker.

FIG. 7d is a fourth schematic diagram of the connection circuit of the four breaker connecting circuits of the present invention, in which the power source side and the load side are not located at the outermost sides of the two sides of the breaker.

FIG. 8a is a first schematic diagram of the connection circuit of the four breaker connecting circuits with the power supply side and the load side at the outermost sides of the two side ends of the breaker.

FIG. 8b is a second schematic diagram of the connection circuit of the four open-pole circuit breakers at the outermost sides of the two side ends of the circuit breaker at the power supply side and the load side in the invention.

Fig. 9 is a schematic wiring diagram of the connection circuit of the rotary double-breakpoint contact system in embodiment 8 of the present invention.

Fig. 10 is a schematic connection diagram of a bridge type double-breakpoint contact system connection circuit in embodiment 9 of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inner", "outer", "front", "rear", "left", "right", "general side", "spare side", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either 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 meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

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

Example 1

In order to solve the problem, in the present embodiment, for a more accurate description, a pole having a contact system is defined as a breaking pole, the molded case circuit breaker includes a load 1 and a circuit breaker body 2, a breaking portion 2a is arranged inside the circuit breaker body 2, the breaking portion 2a includes at least two breaking poles, the circuit breaker body 2 is connected with the load 1, two ends of the load 1 are respectively connected with at least one breaking pole, and the present embodiment takes a two-pole circuit breaker as an example for description. As shown in fig. 1a and fig. 1b, two ends of the load 1 are directly connected to a breaking pole a, a switching part 2b is arranged inside the breaker body 2, a switching conductor 6 is arranged outside the breaker body 2, and the switching part 2b and the switching conductor 6 can change the currents in different directions in the two breaking poles a directly connected to the two ends of the load 1 into currents in the same direction, so as to improve the breaking capacity of the dc breaker.

The direct connection comprises that a breaking pole connected with a load is connected with the load through a conductor, the breaking pole is directly connected with the load, and the breaking pole is connected with the load through a transfer conductor.

The breaker body 2 comprises a breaking part 2a and a switching part 2b, wherein the breaking part 2a at least comprises a first breaking pole 2a01 and a second breaking pole 2a02, the first breaking pole 2a01 and the second breaking pole 2a02 are located at two ends of a load and are directly connected with the load 1, namely the second breaking pole 2a02 is directly connected with the load 1 through a switching conductor 6, and the first breaking pole 2a01 is directly connected with the load 1. In this embodiment, the dividing portion 2a includes a first dividing electrode 2a01 and a second dividing electrode 2a02, two ends of the load 1 are directly connected to a first dividing electrode a, that is, the first dividing electrode 2a01 and the second dividing electrode 2a02, two ends of the first dividing electrode 2a01 are respectively and correspondingly provided with a first connecting terminal 2a0101 and a second connecting terminal 2a0102, and two ends of the second dividing electrode 2a02 are respectively and correspondingly provided with a third connecting terminal 2a0201 and a fourth connecting terminal 2a0202; two ends of the switching part 2b are respectively and correspondingly provided with a wiring terminal five 2b01 and a wiring terminal six 2b02; meanwhile, the switching part 2b is arranged on the circuit breaker body 2 and is located beside the second breaking electrode 2a02 directly connected with a load through the first switching conductor 601.

One end of the load 1 is connected with a wiring terminal six 2b02 of the switching part 2b on the load side, and the other end of the load 1 is directly connected with a wiring terminal two 2a0102 on the load side of a disjunction electrode one 2a01 connected with the end; one end of the power supply 3 is connected with a wiring terminal five 2b01 of the switching part 2b, which is positioned on the power supply side, and the other end of the power supply 3 is connected with a wiring terminal on the power supply side of one of the disjunction poles, which is positioned on the same end of the load 1 as the disjunction pole one 2a 01. In this embodiment, the other end of the power supply 3 is connected to the power supply side connection terminal one 2a0101 of the disconnection electrode one 2a01 of the end. Six 2b02 of binding post and two 2a0102 of binding post of connecting load 1 in the circuit breaker body 2 are located circuit breaker body 2 one side, for the downside of figure 1b, also be the load side, five 2b01 of binding post and binding post 2a0101 of connecting power 3 in the circuit breaker body 2 are located circuit breaker body 2 opposite side, for the upside of figure 1b, also be the power side. Six 2b02 of binding post, five 2b01 of binding post, two 2a0102 of binding post and binding post 2a0101 are located circuit breaker body 2 outside, to figure 1b, six 2b02 of binding post and five 2b01 of binding post are located circuit breaker body 2 rightmost side promptly, and two 2a0102 of binding post and binding post 2a0101 are located circuit breaker body 2 leftmost side.

The transit conductor 6 comprises a first transit conductor 601 and a second transit conductor 602; one end of the first switching conductor 601 is connected with a wiring terminal on the load side of the switching part 2b, and the other end of the first switching conductor is connected with a wiring terminal three 2a0201 on the power supply side of the second disjunction electrode 2a02 on the same end of the load 1 as the switching part 2 b;

one end of the second transit conductor 602 is connected to the connection terminal on the power supply side of the transit portion 2b, and the other end is connected to the connection terminal on the load side of one of the disconnection poles on the same end of the load 1 as the transit portion 2 b. In this embodiment, one end of the first transfer conductor 601 is connected to the load-side connection terminal six 2b02 of the transfer portion 2b, and the other end is connected to the power-side connection terminal three 2a0201 of the divided electrode two 2a02 at the same end as the transfer portion 2b in the load 1. One end of the second relay conductor 602 is connected to the power-supply-side connection terminal five 2b01 of the relay section 2b, and the other end is connected to the load-side connection terminal four 2a0202 of one divided electrode two 2a02 at the same end as the relay section 2b in the load 1.

The specific assembly implementation process of the embodiment is as follows: as shown in fig. 1b, in the 2-pole circuit breaker of the present embodiment, one pole of the three-pole circuit breaker is used as an adapter, and the moving contact of the pole is removed to leave two mutually insulated terminals. Two poles with a contact system as the breaking poles constitute the breaking section 2a. The breaking part 2a and the switching part 2b constitute a circuit breaker body. The switching part 2b is positioned beside the disjunction electrode 2a 02. Still include switching conductor 6 and series connection mounting panel 7, series connection mounting panel 7 is installed in the bottom of circuit breaker body 2, switching conductor 6 is located the space that series connection mounting panel 7 and circuit breaker body 2's bottom formed. In this embodiment, the first transition conductor 601 and the second transition conductor 602 are pre-arranged in a series mounting board. As shown in fig. 1c, the first switching conductor 601 is embedded in the series connection mounting plate 7, the insulator 5 is embedded in the series connection mounting plate 7, and the second switching conductor 602 is embedded in the insulator 5, so that the series connection mounting plate 7, the first switching conductor 601, the insulator 5, and the second switching conductor 602 are integrated. The insulator 5 insulates the first transition conductor 601 and the second transition conductor 602 from each other. Threaded holes are formed at the positions where the first transition conductor 601 and the second transition conductor 602 are matched with the corresponding wiring terminals.

As shown in fig. 1a, 1b and 1c, during wiring, the series mounting plate 7 is placed at the bottom of the breaker body 2, and bolts pass through holes on two connection terminals on the second breaking electrode 2a02 and are screwed into corresponding threaded holes on the first transfer conductor 601 and the second transfer conductor 602, so that the corresponding connection terminals on the second breaking electrode 2a02 are electrically connected with the first transfer conductor 601 and the second transfer conductor 602, and the two are integrated before being connected with a power supply and a load. When the power supply and the load are connected, the current flowing through the first breaking electrode 2a01 and the second breaking electrode 2a02 have the same direction.

It should be noted that, in this embodiment, because there is only one breaking pole (that is, the breaking pole one 2a01 and the breaking pole two 2a 02) at each of the two ends of the load 1, there is no need to connect the more than 1 breaking poles located at one end of the load by the short-circuit conductor 4 in this embodiment, and in this embodiment, a hook may be disposed on the series mounting plate 7 during assembly, and a slot may be disposed on the bottom of the circuit breaker body 2, so that the two are integrated before connection. Alternatively, the series mounting plate 7 and the breaker body 2 are integrated by means of adhesion before wiring. Or set up countersunk head through-hole on series connection mounting panel 7, set up the blind hole on circuit breaker body 2 bottom, make both connect into a whole through self-tapping screw.

Example 2

As shown in fig. 2, in the circuit breaker obtained by modifying the 2-pole circuit breaker by using one pole of the three-pole circuit breaker as the switching part, another connection mode is as follows: the second breaking pole 2a02 is located outside the first breaking pole 2a01, that is, the first breaking pole 2a01 is located between the second breaking pole 2a02 and the switching part, the present embodiment is different from embodiment 1 in that the first breaking pole 2a01 is adjacent to the switching part 2b by extending the length of the switching conductor 6, other connection modes are the same as embodiment 1, the working principle is the same as embodiment 1, and the purpose of directly connecting the direct current molded case circuit breaker to two breaking poles of a load through the switching part 2b and the switching conductor 6 in the same direction can be achieved.

Example 3

In the 3-pole and above circuit breakers, a corresponding number of short-circuit conductors 4 are required to be added, the number of the short-circuit conductors 4 corresponds to the number of the disjunction poles which are not directly connected with the two ends of the load 1, one end of each short-circuit conductor 4 in the corresponding number of short-circuit conductors is connected with a wiring terminal on the load side of one disjunction pole in the disjunction part 2a, and the other end of each short-circuit conductor is connected with a wiring terminal on the power supply side of the other disjunction pole in the disjunction part 2a, which is positioned on the same end of the load. Therefore, the purpose that the corresponding number of short-circuit conductors 4 are used for short-circuit the disjunction electrodes directly connected with the load 1 and other disjunction electrodes positioned on the same side of the load 1 with the disjunction electrodes is achieved, and finally, the switching part 2b, the switching conductor 6 and the short-circuit conductors 4 enable currents in all disjunction electrodes in 3-pole and above circuit breakers to be in the same direction, so that the disjunction capacity of the direct-current circuit breaker is improved. As shown in fig. 3b, in the present embodiment, a 3-pole circuit breaker is taken as an example for explanation, in the present embodiment, one pole of a four-pole circuit breaker is used as an adapter, a moving contact of the pole is removed, and two mutually insulated connecting terminals are remained. Three disjunction poles 2a01, two disjunction poles 2a02 and three disjunction poles 2a03 with contact systems are used as disjunction pole forming disjunction parts 2a. Meanwhile, as shown in fig. 3a, one end of the load 1 includes two divided poles (i.e., a divided pole three 2a03 and a divided pole one 2a 01), the number of the short-circuit conductors in this embodiment is 1, specifically, one end of the short-circuit conductor 4 is connected to a corresponding connection terminal eight 2a0302 on the load side of one divided pole three 2a03 of the two divided poles at one end of the load 1, and the other end is connected to a connection terminal one 2a0101 on the power supply side of the other divided pole one 2a01 of the two divided poles at the same end of the load 1. And a corresponding connecting terminal seven 2a0301 on the power supply side of the disjunction electrode three 2a03 is connected with a power supply.

The switching conductor wiring principle is the same as that of the embodiment 1, and the specific installation embodiment process of the embodiment is as follows: as shown in fig. 3c, the first transition conductor 601, the second transition conductor 602 and the short-circuit conductor 4 are pre-arranged in the series-connection mounting plate 7. The second transit conductor 602 and the short-circuit conductor 4 are pre-embedded in the series mounting plate 7, the insulator 5 is embedded in the series mounting plate 7, and the first transit conductor 601 is embedded in the insulator 5, so that the series mounting plate 7, the short-circuit conductor 4, the second transit conductor 602, the insulator 5 and the first transit conductor 601 are integrated. The insulator 5 insulates the first transition conductor 601 from the second transition conductor 602. The first transfer conductor 601, the second transfer conductor 602, the short-circuit conductor 4 and the corresponding connecting terminal are provided with threaded holes at the matching positions.

As shown in fig. 3a, 3b and 3c, during wiring, the series mounting plate 7 is placed at the bottom of the circuit breaker body 2, bolts pass through holes on the corresponding wiring terminals and are screwed into threaded holes on the first transfer conductor 601, the second transfer conductor 602 and the short-circuit conductor 4, so that the corresponding wiring terminals on the second disjunction electrode 2a02 are electrically connected with the first transfer conductor 601 and the second transfer conductor 602, the short-circuit conductor 4 is connected with the wiring terminal eight 2a0302 and the wiring terminal one 2a0101, and the series mounting plate 7 and the circuit breaker body 2 are integrated before power supply and load are connected. After the power supply and the load are connected, the current flowing through the three disjunctor electrodes has the same direction.

Example 4

As shown in fig. 4, another way of modifying the connection circuit wiring of the three-pole circuit breaker by using the four-pole circuit breaker is to make the direction of the current flowing through the three divided poles the same, wherein the divided pole two 2a02 is not adjacent to the switching part 2 b.

Example 5

As shown in fig. 5b, the switching portion of the three-pole circuit breaker in this embodiment is an independently arranged one pole, the switching portion 2b and the breaking portion 2a are spliced to form the circuit breaker body 2, and two terminals of the switching portion 2b are insulated from each other. In this embodiment, the transfer conductor 6 and the shorting conductor 4 are pre-arranged in the series mounting plate 7.

As shown in fig. 5a and 5b, during wiring, the switching part 2b and the breaking part 2a are spliced into the circuit breaker body 2, the series mounting plate 7 is placed at the bottom of the circuit breaker body 2, and the switching conductor 6 and the short-circuit conductor 4 are wired according to the wiring schematic diagram of the connection circuit shown in fig. 5 a.

Example 6

In this embodiment, the shorting conductor 4 and the transfer conductor 6 are not pre-positioned in the series mounting plate 7, as shown in fig. 3 c. During installation, the short-circuit conductor 4 and the switching conductor 6 are installed in a matching mode with the circuit breaker body 2, and then the series connection installation plate 7 is installed in a matching mode with the circuit breaker body 2. When wiring, the short-circuit conductor 4 and the first switching conductor 601 are connected with corresponding wiring terminals, then the upper insulating plate 5 is installed, then the second switching conductor 602 is connected with corresponding wiring terminals, and then the series mounting plate 7 is assembled.

Example 7

In this embodiment, one of the shorting conductor 4 and the transition conductor 6 is not pre-installed in the series installation plate 7, and the other is pre-installed in the series installation plate 7. When the circuit breaker is installed, the conductor which is not preset in the series installation plate 7 is installed with the circuit breaker body 2 in a matching mode, and then the series installation plate 7 is installed with the circuit breaker body 2 in a matching mode.

Specifically, during wiring, the second switching conductor 602 and the short-circuit conductor 4 are embedded in the series mounting plate 7, and the insulating member 5 is embedded in the series mounting plate 7. The first transition conductor 601 is connected to the corresponding terminal and then the series mounting board 7 is assembled. In addition, in this embodiment, only the second switching conductor 602 is preset in the series mounting plate 7, the insulating member 5 is embedded in the series mounting plate 7, the first switching conductor 601 and the short-circuit conductor 4 are not preset in the series mounting plate 7, and when the breaker is installed, after the first switching conductor 601 and the short-circuit conductor 4 are installed in a matching manner with the breaker body 2, the series mounting plate 7 is installed in a matching manner with the breaker body 2, as shown in fig. 3 c.

Example 8

As shown in fig. 9, by the wiring as shown in the figure, in the rotating double-breakpoint circuit breaker, the breaking pole including the breakpoint at the power source side and the breakpoint at the load side is realized. The arc current direction is the same for all breakpoints. The electric arcs of all breakpoints on the power supply side synchronously enter the arc extinguish chamber on the power supply side, and the electric arcs of all breakpoints on the load side synchronously enter the arc extinguish chamber on the load side.

Example 9

As shown in fig. 10, in the bridge type double break point circuit breaker, the breaking pole includes a break point on the power source side and a break point on the load side. Although the arc current directions of all the breakpoints on the power supply side are opposite to the arc current directions of all the breakpoints on the load side, the arc current directions of all the breakpoints on the power supply side are the same, and the arc current directions of all the breakpoints on the load side are also the same, so that the arcs of all the breakpoints on the power supply side synchronously enter the arc extinguish chamber on the power supply side, and the arcs of all the breakpoints on the load side synchronously enter the arc extinguish chamber on the load side.

In addition, as shown in fig. 6,7a,7b,7c,7d,8a,8b, the present invention also provides a schematic connection diagram of other connection circuits, which is based on the technical principle in embodiment 1 or 3, and changes the current direction at two ends of the load by using the short-circuit conductor and the transit conductor with the increase of the breaking pole of the circuit breaker, thereby improving the breaking capacity of the direct current circuit breaker. Through the wiring shown in the figure, the arc current directions of all breakpoints of all the disjunction poles positioned on the power supply side are the same, or the arc current directions of all the breakpoints of all the disjunction poles positioned on the load side are the same, or the arc current directions of all the breakpoints of all the disjunction poles positioned in the disjunction poles are the same.

It should be noted that there are many ways to mount the series mounting plate 7, the shorting conductor 4, the transfer conductor 6, the insulating member 5 and the circuit breaker body 2, and any mounting manner taught by the embodiments of the present invention should be considered as falling within the scope of the present invention. Meanwhile, the breaker body comprises a breaking part and a switching part, so that the breaking part and the switching part are both positioned in the breaker body regardless of the structure of the breaking part and the switching part. Embodiments 1 and 3 are the switching part modified by one pole of the multi-pole circuit breaker, so the width of the switching part is the same as the width of the disjunction pole, but the width of the switching part can be different from the width of the disjunction pole, and the switching part can be narrower than the disjunction pole. The multi-pole circuit breakers of embodiment 1 and embodiment 3 may be modified such that the pole of the switching section is designed to be narrower than the breaking pole, and the switching section of embodiment 5 may also be designed to be narrower than the breaking pole, so that the width of the circuit breaker body can be reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (13)

1. The utility model provides a circuit breaker, includes load (1) and circuit breaker body (2), circuit breaker body (2) inside is provided with disconnected portion (2 a), disconnected portion (2 a) include two at least disconnected utmost point, circuit breaker body (2) with load (1) is connected, the both ends of load (1) respectively link to each other and have at least one disconnected utmost point, its characterized in that: the circuit breaker comprises a circuit breaker body (2), and is characterized in that a switching part (2 b) is arranged in the circuit breaker body (2), a switching conductor (6) is arranged outside the circuit breaker body (2), and the switching part (2 b) and the switching conductor (6) can change the anisotropic current in at least two breaking poles directly connected with the two ends of a load (1) into the same-direction current, so that the breaking capacity of the circuit breaker is improved.

2. A circuit breaker as claimed in claim 1, wherein: the breaker is characterized by further comprising short-circuit conductors (4) in corresponding quantity, the quantity of the short-circuit conductors (4) corresponds to the quantity of the breaking poles which are not directly connected with the two ends of the load (1), the short-circuit conductors (4) in corresponding quantity can enable the breaking poles which are directly connected with the load (1) to be in short circuit with other breaking poles which are located on the same side of the load (1) as the breaking poles, and currents in all the breaking poles in 3 breaking poles and above breakers can be enabled to be in the same direction through the switching part (2 b), the switching conductors (6) and the short-circuit conductors (4), so that the breaking capacity of the breakers is improved.

3. A circuit breaker as claimed in claim 1 or 2, wherein: the disjunction portion (2 a) at least comprises a disjunction electrode I (2 a 01) and a disjunction electrode II (2 a 02), wherein two ends of the disjunction electrode I (2 a 01) are respectively and correspondingly provided with a wiring terminal I (2 a 0101) and a wiring terminal II (2 a 0102), two ends of the disjunction electrode II (2 a 02) are respectively and correspondingly provided with a wiring terminal III (2 a 0201) and a wiring terminal IV (2 a 0202), the disjunction electrode I (2 a 01) and the disjunction electrode II (2 a 02) are located at two ends of a load and are directly connected with the load (1), and two ends of the switching portion (2 b) are respectively and correspondingly provided with a wiring terminal V (2 b 01) and a wiring terminal VI (2 b 02).

4. A circuit breaker as claimed in claim 3, wherein: one end of the load (1) is connected with a wiring terminal six (2 b 02) of the switching part (2 b) on the load side, and the other end of the load (1) is directly connected with a wiring terminal two (2 a 0102) on the load side of the disjunction electrode one (2 a 01);

one end of the power supply (3) is connected with a wiring terminal five (2 b 01) of the switching part (2 b) on the power supply side, and the other end of the power supply (3) is connected with a wiring terminal on the power supply side of one of the disjunction poles located on the same end of the load (1) as the disjunction pole one (2 a 01).

5. A circuit breaker as claimed in claim 3, wherein: the transit conductor (6) comprises a first transit conductor (601) and a second transit conductor (602);

one end of the first transfer conductor (601) is connected with a wiring terminal on the load side of the transfer part (2 b), and the other end of the first transfer conductor is connected with a wiring terminal three (2 a 0201) on the power supply side of a disjunction electrode two (2 a 02) on the same end of the load (1) as the transfer part (2 b);

one end of the second switching conductor (602) is connected with a wiring terminal on the power supply side of the switching part (2 b), and the other end of the second switching conductor is connected with a wiring terminal on the load side of one of the disjunction electrodes on the same end of the load (1) as the switching part (2 b).

6. A circuit breaker as claimed in claim 2, wherein: one end of each short-circuit conductor (4) in the corresponding number is connected with a wiring terminal on the load side of one disjunction pole in the disjunction portion (2 a), and the other end of each short-circuit conductor is connected with a wiring terminal on the power supply side of the other disjunction pole on the same load end in the disjunction portion (2 a).

7. A circuit breaker as claimed in claim 1 or 2, wherein: the switching part (2 b) is arranged on the circuit breaker body (2) and is positioned beside a second breaking electrode (2 a 02) which is directly connected with a load through a first switching conductor (601).

8. The circuit breaker of claim 5, wherein: one end of the first transfer conductor (601) is connected with a wiring terminal six (2 b 02) on the load side of the transfer part (2 b), and the other end of the first transfer conductor is connected with a wiring terminal three (2 a 0201) on the power supply side of a disjunction electrode two (2 a 02) on the same end of the load (1) as the transfer part (2 b).

One end of the second switching conductor (602) is connected with a fifth connecting terminal (2 b 01) on the power supply side of the switching part (2 b), and the other end of the second switching conductor is connected with a fourth connecting terminal (2 a 0202) on the load side of a second disconnecting electrode (2 a 02) on the same end of the load (1) as the switching part (2 b).

9. The circuit breaker of claim 5, wherein: a wiring terminal six (2 b 02) and a wiring terminal two (2 a 0102) which are connected with a load (1) in the circuit breaker body (2) are positioned on one side of the circuit breaker body (2), and a wiring terminal five (2 b 01) and a wiring terminal one (2 a 0101) which are connected with a power supply (3) in the circuit breaker body (2) are positioned on the other side of the circuit breaker body (2);

binding post six (2 b 02), binding post five (2 b 01), binding post two (2 a 0102) and binding post one (2 a 0101) are located circuit breaker body (2) outside.

10. A circuit breaker as claimed in claim 1 or 2, wherein: still include series connection mounting panel (7), install in the bottom of circuit breaker body (2) series connection mounting panel (7), short circuit conductor (4) and switching conductor (6) are located the space that the bottom of series connection mounting panel (7) and circuit breaker body (2) formed.

11. A circuit breaker as claimed in claim 10, wherein: the short-circuit conductor (4) and the switching conductor (6) are preset in the series mounting plate (7).

12. A circuit breaker as claimed in claim 10, wherein: short circuit conductor (4) and switching conductor (6) match the installation with circuit breaker body (2), series connection mounting panel (7) match the installation with circuit breaker body (2).

13. A circuit breaker as claimed in claim 10, wherein: the short circuit conductor (4) and a part of the switching conductor (6) are preset in the series mounting plate (7), the rest parts are not preset in the series mounting plate (7), the conductor part which is not preset in the series mounting plate (7) is matched with the circuit breaker body (2) for installation, and the series mounting plate (7) is matched with the circuit breaker body (2) for installation.

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