CN219203068U - Circuit breaker - Google Patents

Abstract

A circuit breaker, comprising a load (1) and a circuit breaker body (2), the circuit breaker body (2) is provided with a breaking part (2a) inside, and the breaking part (2a) includes at least two breaking poles, the The circuit breaker body (2) is connected to the load (1), and each of the two ends of the load (1) is connected to at least one breaking pole. The connecting part (2b) and the circuit breaker body (2) are provided with a transfer conductor (6), through which the transfer part (2b) and the transfer conductor (6) can connect with the load (1) The opposite direction current in the two breaking poles directly connected at both ends becomes the same direction current so as to improve the breaking capacity of the circuit breaker.

Description

a circuit breaker

technical field

The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to a circuit breaker. Through an adapter plate, the current directions in the breaking poles of the circuit breaker located at both ends of the load are the same, thereby improving the breaking performance of the circuit breaker.

Background technique

With the development of new energy technology, higher requirements are put forward for low-voltage electrical components, especially in the photovoltaic power DC system, the rated working voltage of low-voltage electrical appliances is even as high as DC1500V. The method of connecting multiple breakpoints in series can improve the breaking performance of the circuit breaker. Furthermore, when all the breaking poles of the DC molded case circuit breaker are at one end of the load, the current direction of all the breaking poles can be the same by connecting the load side of one breaking pole and the power side of the other breaking pole in series.

However, when the DC molded case circuit breaker connects the load with breaking poles at both ends, the current direction in the two breaking poles connected to the load is opposite, so that the arc current direction in the breakpoint of the two breaking poles is opposite, and the arc mutually exclusive. If the two arcs are moving at different speeds, the slower arc will be repelled by the faster moving arc and may not reach the arc chute.

Utility model content

The purpose of this utility model is to aim at the current direction in the two breaking poles connected to the load when there are breaking poles at both ends of the load connected to the existing DC molded case circuit breaker, so that the breakpoints of the two breaking poles The direction of the arc current in the circuit is opposite, causing the arcs to repel each other, thereby reducing the defect of the breaking capacity of the circuit breaker. A circuit breaker is provided, and the direction of the current in the two breaking poles of the circuit breaker connected to the load is the same through the transfer part and the transfer conductor , thereby improving the breaking performance of the circuit breaker.

Technical solutions

In order to achieve the above-mentioned technical purpose, a circuit breaker provided by the utility model includes a load and a circuit breaker body, a breaking part is arranged inside the circuit breaker body, and the breaking part includes at least two breaking poles, and the circuit breaker body Connected to the load, each of the two ends of the load is connected to at least one breaking pole, characterized in that: the inside of the circuit breaker body is provided with a transfer part, and the outside of the circuit breaker body is provided with a transfer conductor, Through the transition part and the transition conductor, the opposite direction current in at least two breaking poles directly connected to the two ends of the load can be changed into the same direction current, thereby improving the breaking capacity of the circuit breaker.

Further, it also includes a corresponding number of short-circuit conductors, the number of the short-circuit conductors corresponds to the number of split poles that are not directly connected to the two ends of the load, and the corresponding number of short-circuit conductors can be connected to the load The directly connected breaking poles are short-circuited with other breaking poles on the same side of the load as the breaking poles. Through the transfer part, transfer conductor and short-circuit conductor, all the breaking poles in the circuit breaker with three or more breaking poles can be short-circuited. The current in the circuit is in the same direction to improve the breaking capacity of the circuit breaker.

Further, the breaking part at least includes a breaking pole 1 and a breaking pole 2, the two ends of the breaking pole 1 are respectively provided with the connecting terminal 1 and the connecting terminal 2 respectively, and the two ends of the said breaking pole 2 are respectively respectively provided with the connecting terminal 3 and connecting terminal four, the breaking pole one and breaking pole two are located at both ends of the load and are directly connected to the load, and connecting terminal five and connecting terminal six are correspondingly provided at both ends of the transfer part.

Further, one end of the load is connected to terminal six on the load side of the transition part, and the other end of the load is directly connected to terminal two on the load side of the breaking pole one;

One end of the power supply is connected to the connecting terminal five on the power supply side of the transfer part, and the other end of the power supply is connected to the connecting terminal on the power supply side of one of the breaking poles located at the same end of the load as the breaking pole one.

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

One end of the first transfer conductor is connected to the connection terminal on the load side of the transfer part, and the other end is connected to the connection terminal 3 on the power supply side of the breaking pole 2 at the same end of the load as the transfer part;

One end of the second transition conductor is connected to the connection terminal on the power supply side of the transition part, and the other end is connected to the connection terminal on the load side of one of the split poles at the same end of the load as the transition part.

Further, one end of each short-circuit conductor in the corresponding number of short-circuit conductors is connected to a connection terminal on the load side of a broken pole in the broken part, and the other end is connected to the terminal at the same end of the load in the broken part. The connecting terminal on the power side of the other broken pole is connected.

Further, the transition part is arranged on the circuit breaker body, and is located beside the second breaking pole which is directly connected to the load through the first transition conductor.

Further, one end of the first transition conductor is connected to terminal six on the load side of the transition part, and the other end is connected to terminal three on the power supply side of breaking pole two at the same end of the load as the transition part;

One end of the second transition conductor is connected to terminal five on the power supply side of the transition part, and the other end is connected to terminal four on the load side of the split pole two at the same end of the load as the transition part.

Further, the terminal six and terminal two connected to the load in the circuit breaker body are located on one side of the circuit breaker body, and the terminal five and terminal one connected to the power supply in the circuit breaker body are located on the other side of the circuit breaker body;

The terminal six, terminal five, terminal two and terminal one are located at the outermost side of the circuit breaker body.

Further, it also includes a series installation plate, the series installation plate is installed at the bottom of the circuit breaker body, and the shorting conductor and the transition conductor are located in the space formed by the series installation plate and the bottom of the circuit breaker body.

Further, the short-circuit conductors and transition conductors are preset in the series installation board.

Further, the short-circuit conductor and the transfer conductor are matched with the circuit breaker body, and the series installation plate is matched with the circuit breaker body.

Further, a part of the short-circuit conductor and transfer conductor is preset in the series installation board, and the rest is not preset in the series installation board, and the conductor part not preset in the series installation board is connected with the circuit breaker body Matching installation, the series mounting plate is matched with the circuit breaker body.

Beneficial effect

The circuit breaker provided by the utility model, when there are breaking poles at both ends of the load, the current direction in the two breaking poles directly connected to the load of the circuit breaker is the same through the transfer part and the transfer conductor, which is beneficial to arc extinguishing. Thereby improving the breaking performance of the circuit breaker. In addition, the two power terminal terminals are located on one side of the circuit breaker, and the two load terminal terminals are located on the other side of the circuit breaker, which is convenient for users to use.

Description of drawings

Accompanying drawing 1a is a schematic diagram of connection circuit wiring of two split pole circuit breakers in Embodiment 1 of the utility model; Accompanying drawing 1b is a three-dimensional schematic diagram of refitting two split pole circuit breakers with a three-pole circuit breaker in Embodiment 1 of the utility model;

Accompanying drawing 1c is a schematic diagram of installation of series installation boards, transfer conductors, and insulators in Embodiment 1 of the utility model; Accompanying drawing 2 is a schematic diagram 2 of connection circuit wiring of two split pole circuit breakers in Embodiment 2 of the utility model;

Accompanying drawing 3a is a schematic diagram of connection circuit wiring of three split-pole circuit breakers in Embodiment 3 of the utility model; accompanying drawing 3b is a three-dimensional schematic diagram of refitting three split-pole circuit breakers with a four-pole circuit breaker in Embodiment 3 of the utility model;

Accompanying drawing 3c is the schematic diagram of installation of series connection mounting plate, short-circuit conductor, transfer conductor and insulating part in embodiment 3 of the present utility model;

Accompanying drawing 4 is the wiring schematic diagram 2 of the connecting circuit of three split pole circuit breakers in the utility model embodiment 4;

Accompanying drawing 5a is the third schematic diagram of connection circuit wiring of three split-pole circuit breakers in Embodiment 5 of the utility model; accompanying drawing 5b is a three-dimensional schematic diagram of three split-pole circuit breakers independently provided at the transfer part in Embodiment 5 of the utility model;

Accompanying drawing 6 is a schematic diagram of connection circuit wiring of three split pole circuit breakers in the utility model where the power supply side and the load side are not at the outermost sides of the circuit breaker.

Accompanying drawing 7a is the wiring schematic diagram 1 of the connection circuit of four split-pole circuit breakers whose power supply side and load side are not at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 7b is the wiring schematic diagram 2 of the connection circuit of four split-pole circuit breakers whose power supply side and load side are not at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 7 c is the connection circuit wiring schematic diagram 3 of four split-pole circuit breakers whose power supply side and load side are not at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 7 d is the schematic diagram 4 of connection circuit wiring of four split-pole circuit breakers whose power supply side and load side are not at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 8a is the wiring schematic diagram 1 of the connection circuit of four split-pole circuit breakers with the power supply side and the load side at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 8b is the wiring schematic diagram 2 of the connection circuit of four split pole circuit breakers with the power side and the load side at the outermost sides of the circuit breaker in the utility model.

Accompanying drawing 9 is the wiring diagram of the connection circuit of the rotary double-break point contact system in the eighth embodiment of the utility model.

Accompanying drawing 10 is the wiring diagram of the connecting circuit of the bridge-type double-break point contact system in Embodiment 9 of the present utility model.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "inner", "outer", "front", "rear", "left", "right", "common side", "spare side" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

Example 1

When the existing DC molded case circuit breaker connects loads with breaking poles at both ends, the current directions in the two breaking poles connected to the load are opposite, so that the arc current directions in the breakpoints of the two breaking poles are opposite, causing The arcs repel each other, thereby reducing the breaking capacity of the circuit breaker. In order to solve this problem, the utility model provides a circuit breaker. At the same time, for more accurate description, this embodiment defines the pole with the contact system as the breaking pole. The molded case circuit breaker includes a load 1 and a circuit breaker body 2, the circuit breaker body 2 is provided with a breaking part 2a inside, and the breaking part 2a includes at least two breaking poles, and the circuit breaker body 2 is connected to the load 1 , each of the two ends of the load 1 is connected to at least one breaking pole, and this embodiment takes a two-pole circuit breaker as an example for illustration. As shown in Figure 1a and Figure 1b, each of the two ends of the load 1 is directly connected to a breaking pole a, the inside of the circuit breaker body 2 is provided with an adapter part 2b, and the outside of the circuit breaker body 2 A transfer conductor 6 is provided, through the transfer part 2b and the transfer conductor 6, the opposite direction current in the two breaking poles a directly connected to the two ends of the load 1 can be changed into the same direction current to improve the DC breaking device breaking capacity.

The above-mentioned direct connection not only includes that the split pole connected to the load is connected to the load through a conductor, but also includes that the split pole is directly connected to the load, and also includes that the split pole is connected to the load through a transfer conductor.

The circuit breaker body 2 includes a breaking part 2a and an adapter part 2b. The breaking part 2a at least includes a breaking pole 1 and a breaking pole 2a02. The breaking pole 2a01 and the breaking pole 2a02 are located at both ends of the load and connected to the load. 1 is directly connected, that is, the second breaking pole 2a02 is directly connected to the load 1 through the transfer conductor 6, and the first breaking pole 2a01 is directly connected to the load 1. In this embodiment, the breaking part 2a includes a breaking pole 1 2a01 and a breaking pole 2 2a02, and the two ends of the load 1 are directly connected to a breaking pole a, that is, the breaking pole 1 2a01 and the breaking pole 2 2a02 Connecting terminal 1 2a0101 and connecting terminal 2 2a0102 are respectively arranged at both ends of the first breaking pole 2a01, and connecting terminal 3 2a0201 and connecting terminal 4 2a0202 are respectively arranged at both ends of the breaking pole 2a02; Connecting terminal 5 2b01 and connecting terminal 6 2b02 are respectively arranged at both ends of 2b; at the same time, the transfer part 2b is arranged on the circuit breaker body 2, and is located at the breaking pole directly connected to the load through the first transfer conductor 601 The side of two 2a02.

One end of the load 1 is connected to the connection terminal 6 2b02 on the load side of the transfer part 2b, and the other end of the load 1 is directly connected to the connection terminal 2 2a0102 on the load side of a breaking pole 1 2a01 connected to this end; One end of the power supply 3 is connected to the connecting terminal 5 2b01 on the power supply side of the transfer part 2b, and the other end of the power supply 3 is connected to the connecting terminal on the power supply side of one of the split poles located at the same end of the load 1 as the split pole 1 2a01 . In this embodiment, the other end of the power supply 3 is connected to the terminal one 2a0101 on the power supply side of the breaking pole one 2a01 of this end. The terminal six 2b02 and terminal two 2a0102 connected to the load 1 in the circuit breaker body 2 are located on one side of the circuit breaker body 2, that is, the lower side of the accompanying drawing 1b, that is, the load side, and the circuit breaker body 2 is connected to Terminal 5 2b01 and terminal 1 2a0101 of power supply 3 are located on the other side of circuit breaker body 2, that is, the upper side of FIG. 1b, that is, the power supply side. The connecting terminal six 2b02, connecting terminal five 2b01, connecting terminal two 2a0102 and connecting terminal one 2a0101 are located at the outermost side of the circuit breaker body 2. For the accompanying drawing 1b, that is, connecting terminal six 2b02 and connecting terminal five 2b01 are located at the open circuit The circuit breaker body 2 is on the far right side, and the terminal two 2a0102 and terminal one 2a0101 are located on the leftmost side of the circuit breaker body 2.

The transfer conductor 6 includes a first transfer conductor 601 and a second transfer conductor 602; one end of the first transfer conductor 601 is connected to the connection terminal on the load side of the transfer part 2b, and the other end is connected to and transfer Part 2b is connected to terminal three 2a0201 on the power supply side of breaking pole two 2a02 at the same end of load 1;

One end of the second transition conductor 602 is connected to the connection terminal on the power supply side of the transition part 2b, and the other end is connected to the connection terminal on the load side of one of the split poles at the same end of the load 1 as the transition part 2b. In this embodiment, one end of the first transfer conductor 601 is connected to the connection terminal 6 2b02 on the load side of the transfer part 2b, and the other end is connected to the power supply side of the split pole 2 2a02 at the same end of the load 1 as the transfer part 2b. The connecting terminal three 2a0201 is connected. One end of the second transfer conductor 602 is connected to the connection terminal 5 2b01 on the power supply side of the transfer part 2b, and the other end is connected to the connection terminal 4 on the load side of a split pole 2 2a02 at the same end of the load 1 as the transfer part 2b. 2a0202 connected.

The specific assembly implementation process of this embodiment is: as shown in Figure 1b, the 2-pole circuit breaker of this embodiment uses one pole of a three-pole circuit breaker as an adapter, removes the movable contact of this pole, and retains Two terminal blocks insulated from each other. The two poles with contact systems form the disconnection 2 a as disconnection poles. The breaking part 2a and the transition part 2b form a circuit breaker body. The transition part 2b is located beside the second split pole 2a02. It also includes a transition conductor 6 and a series installation plate 7, the series installation plate 7 is installed on the bottom of the circuit breaker body 2, and the transition conductor 6 is located in the space formed by the series installation plate 7 and the bottom of the circuit breaker body 2. In this embodiment, the first transfer conductor 601 and the second transfer conductor 602 are preset in the series installation board. As shown in Figure 1c, the first transfer conductor 601 is embedded in the series installation board 7, the insulator 5 is embedded in the series installation board 7, and the second transfer conductor 602 is embedded in the insulator 5, making the series connection The mounting board 7 , the first transition conductor 601 , the insulating member 5 and the second transition conductor 602 are integrated. The insulator 5 insulates between the first transition conductor 601 and the second transition conductor 602 . Threaded holes are provided where the first transfer conductor 601 and the second transfer conductor 602 cooperate with corresponding connection terminals.

As shown in accompanying drawing 1a, accompanying drawing 1b and accompanying drawing 1c, when wiring, put the series mounting plate 7 on the bottom of the circuit breaker body 2, and the bolts pass through the through holes on the two terminal blocks on the second pole 2a02 and twist into the corresponding threaded holes on the first transition conductor 601 and the second transition conductor 602, so that the corresponding terminal on the split pole 2a02 is electrically connected with the first transition conductor 601 and the second transition conductor 602, so that both It becomes a whole before connecting the power supply and load. When the power supply and load are connected, the direction of the current flowing through the first breaking pole 2a01 and the second breaking pole 2a02 is the same.

It should be noted that, in this embodiment, since there is only one breaking pole at both ends of the load 1 (that is, breaking pole one 2a01 and breaking pole two 2a02), there is no need to short-circuit the 4 pairs of conductors in this embodiment. More than one breaking pole located at one end of the load is connected. In this embodiment, when assembling, a hook can be provided on the series mounting plate 7, and a slot can be provided on the bottom of the circuit breaker body 2, so that the two can be connected in the wiring before becoming a whole. Alternatively, the series mounting plate 7 and the circuit breaker body 2 are integrated by bonding before wiring. Alternatively, countersunk through holes are provided on the series mounting plate 7, blind holes are provided on the bottom of the circuit breaker body 2, and the two are connected as a whole by self-tapping screws.

Example 2

As shown in Figure 2, in the circuit breaker modified by borrowing one pole of the three-pole circuit breaker as the transfer part of the 2-pole circuit breaker, there is another connection method: the second breaking pole 2a02 is located at the first breaking pole The outer side of 2a01, that is, the first split pole 2a01 is located in the middle of the second split pole 2a02 and the transfer part. The connection part 2b is adjacent to each other, and the other wiring methods are the same as in the first embodiment, and its working principle is also the same as that in the first embodiment. It is also possible to directly connect the DC molded case circuit breaker to two loads through the transfer part 2b and the transfer conductor 6. The purpose of breaking the current direction in the pole is the same.

Example 3

In circuit breakers with 3 poles and above, it is also necessary to add a corresponding number of short-circuit conductors 4, the number of the short-circuit conductors 4 corresponds to the number of split poles not directly connected to the two ends of the load 1, and the corresponding number One end of each short-circuit conductor 4 of the short-circuit conductor is connected to the load-side connection terminal of a split pole in the break part 2a, and the other end is connected to another break pole at the same end of the load in the break part 2a. connected to the terminals on the power supply side. In this way, the corresponding number of short-circuiting conductors 4 can short-circuit the breaking pole directly connected to the load 1 with other breaking poles located on the same side of the load 1 as the breaking pole. The connecting conductor 6 and the short-circuiting conductor 4 make the current in all the breaking poles of the circuit breaker with 3 poles or above flow in the same direction, so as to improve the breaking capacity of the DC circuit breaker. As shown in Fig. 3b, in this embodiment, a 3-pole circuit breaker is taken as an example for illustration. Remove it, and keep two terminals that are insulated from each other. Three breaking poles 1 2a01, 2 breaking pole 2a02, and breaking pole 3 2a03 with a contact system are used as breaking poles to form the breaking portion 2a. At the same time, as shown in Figure 3a, one end of the load 1 includes two breaking poles (that is, breaking pole three 2a03 and breaking pole one 2a01). One end of the conductor 4 is connected to one of the two split poles at one end of the load 1, one of the two split poles 2a03, and the corresponding terminal eight 2a0302 on the load side, and the other end is connected to the other of the two split poles at the same end of the load 1. 2a01 The connecting terminal on the power supply side is connected to 2a0101. The corresponding connecting terminal 7 2a0301 on the power supply side of the breaking pole three 2a03 is connected with the power supply.

The connection principle of the transfer conductor is the same as that of Embodiment 1. The specific installation process of this embodiment is as follows: as shown in Figure 3c, the first transfer conductor 601, the second transfer conductor 602 and the short-circuit conductor 4 are preset at Install plate 7 in series. The second transfer conductor 602 and the short-circuit conductor 4 are pre-embedded in the series installation board 7, the insulator 5 is embedded in the series installation board 7, and the first transfer conductor 601 is embedded in the insulator 5, so that the series installation board 7. The short-circuit conductor 4, the second transfer conductor 602, the insulating member 5 and the first transfer conductor 601 are integrated into one body. The insulator 5 insulates between the first transition conductor 601 and the second transition conductor 602 . Screw holes are provided where the first transfer conductor 601 , the second transfer conductor 602 , and the short-circuit conductor 4 cooperate with the corresponding connection terminals.

As shown in accompanying drawings 3a, 3b, and 3c, when wiring, place the series mounting plate 7 on the bottom of the circuit breaker body 2, and the bolts pass through the through holes on the corresponding wiring terminals and screw into the first transfer conductor 601, the second The threaded holes on the transfer conductor 602 and the short-circuit conductor 4 make the corresponding connection terminals on the split pole 2a02 electrically connected with the first transfer conductor 601 and the second transfer conductor 602, so that the short-circuit conductor 4 is connected to the connection terminal 8 2a0302 is connected with terminal one 2a0101, so that the series installation plate 7 and the circuit breaker body 2 become a whole before connecting the power supply and the load. After the power supply and load are connected, the current direction flowing through the three broken poles is the same.

Example 4

As shown in Figure 4, another way of using a four-pole circuit breaker to modify a three-pole circuit breaker to connect the circuit wiring is that the second breaking pole 2a02 is not adjacent to the transfer part 2b, and it can also make the current flowing through the three breaking poles The current direction is the same.

Example 5

As shown in Figure 5b, the transfer part of the three-pole circuit breaker in this embodiment is a pole provided independently. The terminals are insulated from each other. In this embodiment, the transfer conductor 6 and the short-circuit conductor 4 are preset in the series installation board 7 .

As shown in Figures 5a and 5b, when wiring, first splice the transfer part 2b and the breaking part 2a into the circuit breaker body 2, then place the series mounting plate 7 on the bottom of the circuit breaker body 2, and transfer the conductor 6 to the short circuit breaker body. Conductor 4 is wired according to the schematic diagram of connecting circuit wiring shown in FIG. 5a.

Example 6

In this embodiment, as shown in FIG. 3 c , the short-circuit conductor 4 and the transfer conductor 6 are not preset in the series installation board 7 . During installation, the short-circuit conductor 4 and the transfer conductor 6 are first matched with the circuit breaker body 2 , and then the series installation plate 7 is matched with the circuit breaker body 2 . When wiring, first connect the short-circuit conductor 4 and the first transition conductor 601 to the corresponding terminal, then install the insulating plate 5, then connect the second transition conductor 602 to the corresponding terminal, and then assemble the series installation board 7.

Example 7

In this embodiment, part of the short-circuit conductor 4 and the transfer conductor 6 are not preset in the series installation board 7 , and the rest are preset in the series installation board 7 . When installing, first match and install the conductors not preset in the series installation plate 7 with the circuit breaker body 2 , and then match and install the series installation plate 7 with the circuit breaker body 2 .

Specifically, when wiring, the second transfer conductor 602 and the short-circuit conductor 4 are pre-embedded in the series installation board 7 , and the insulating member 5 is embedded in the series installation board 7 . First connect the first transfer conductor 601 to the corresponding connection terminal, and then assemble the series installation board 7 . In addition, in this embodiment, only the second transfer conductor 602 can be preset in the series installation board 7, the insulator 5 is embedded in the series installation board 7, and the first transfer conductor 601 and the shorting conductor 4 are not preset. Placed in the series installation plate 7, during installation, after the first transfer conductor 601 and the short-circuit conductor 4 are matched and installed with the circuit breaker body 2, then the series installation plate 7 is matched and installed with the circuit breaker body 2, as It is shown in accompanying drawing 3c.

Example 8

As shown in Fig. 9, through the wiring as shown in the figure, in the rotating double break point circuit breaker, the breaking pole can be realized including the break point on the power supply side and the break point on the load side. The direction of the arc current is the same for all breakpoints. The arcs of all breakpoints on the power supply side enter the arc extinguishing chamber on the power supply side synchronously, and the arcs of all breakpoints on the load side enter the arc extinguishing chamber on the load side synchronously.

Example 9

As shown in Fig. 10, in the bridge type double breakpoint circuit breaker, the breaking pole includes a breakpoint on the power supply side and a breakpoint on the load side. Although the arc current direction of all breakpoints on the power supply side is opposite to that of all breakpoints on the load side, the arc current direction of all breakpoints on the power supply side is the same, and the arc current of all breakpoints on the load side The direction is also the same, so that the arcs of all breakpoints on the power supply side enter the arc extinguishing chamber on the power supply side synchronously, and the arcs of all breakpoints on the load side enter the arc extinguishing chamber on the load side synchronously.

In addition, as shown in accompanying drawings 6, 7a, 7b, 7c, 7d, 8a, and 8b, the utility model also provides a circuit breaker based on the technical principle in embodiment 1 or 3. The transfer conductor realizes the change of the current direction at both ends of the load, thereby improving the breaking capacity of the DC circuit breaker and other connecting circuit wiring diagrams. Through the wiring as shown in the figure, the arc current direction of all break points on the power supply side of all split poles is the same, or the arc current direction of all break points of all split poles on the load side is the same, or the arc current direction of all split poles is the same The direction of the arc current is the same for all breakpoints located in the middle of the broken poles.

At the same time, it should be noted that, at the same time, there are many ways to install the series installation plate 7, the short-circuit conductor 4, the transfer conductor 6, the insulator 5 and the circuit breaker body 2, and any installation method inspired by the embodiment of the present invention All should be regarded as falling into the protection scope of the present utility model. At the same time, the circuit breaker body includes a breaking part and a transition part, so regardless of whether the breaking part and the transition part are connected as a whole, and regardless of the structure of the breaking part and the transition part, the breaking part and the transition part are located in the circuit breaker. inside the device body. Embodiment 1 and Embodiment 3 are transfer parts converted from one pole of a multi-pole circuit breaker, so the width of the transfer part is the same as that of the breaking pole, but the width of the transfer part can be different from the width of the breaking pole. The transition can be extremely narrower than the break. The multi-pole circuit breaker of embodiment 1 and embodiment 3 is refitted into the pole of the transition part can be designed to be narrower than the division, and the transition part of embodiment 5 can also be designed to be narrower than the division, which can reduce the size of the circuit breaker body width.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand It can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (13)

1. A circuit breaker, comprising a load (1) and a circuit breaker body (2), the circuit breaker body (2) is provided with a breaking part (2a) inside, and the breaking part (2a) includes at least two breaking poles , the circuit breaker body (2) is connected to the load (1), and each of the two ends of the load (1) is connected to at least one breaking pole, which is characterized in that: the internal setting of the circuit breaker body (2) There is a transition part (2b), and a transition conductor (6) is arranged outside the circuit breaker body (2), through which the transition part (2b) and the transition conductor (6) can connect with the load ( 1) The opposite direction current in at least two breaking poles directly connected at both ends becomes the same direction current so as to improve the breaking capacity of the circuit breaker. 2. A circuit breaker according to claim 1, characterized in that: it also includes a corresponding number of short-circuit conductors (4), the number of the short-circuit conductors (4) and the two ends of the load (1) are not the same The number of directly connected split poles corresponds to the number of short-circuit conductors (4) that can connect the split poles directly connected to the load (1) with the other split poles on the same side of the load (1) as the split poles. The poles are short-circuited, and through the transfer part (2b), the transfer conductor (6) and the short-circuit conductor (4), the currents in all the broken poles in the circuit breaker with 3 broken poles and above can be made in the same direction to improve the breaking speed. device breaking capacity. 3. A circuit breaker according to claim 1 or 2, characterized in that: said breaking part (2a) at least includes breaking pole one (2a01) and breaking pole two (2a02), said breaking pole one (2a01 ) are respectively provided with connection terminal 1 (2a0101) and connection terminal 2 (2a0102) respectively, and the two ends of said breaking pole 2 (2a02) are respectively respectively provided with connection terminal 3 (2a0201) and connection terminal 4 (2a0202). The first breaking pole (2a01) and the second breaking pole (2a02) are located at both ends of the load and are directly connected to the load (1), and the two ends of the transfer part (2b) are respectively provided with connecting terminals five (2b01) and wiring Terminal six (2b02). 4. A circuit breaker according to claim 3, characterized in that: one end of the load (1) is connected to terminal six (2b02) of the transfer part (2b) on the load side, and the load (1 ) is directly connected to terminal 2 (2a0102) on the load side of breaking pole 1 (2a01); One end of the power supply (3) is connected to the connection terminal five (2b01) of the transfer part (2b) on the power supply side, and the other end of the power supply (3) is connected to the terminal five (2b01) on the same end of the load (1) as the breaking pole one (2a01). Connected to the terminal on the power side of a split pole. 5. A circuit breaker according to claim 3, characterized in that: the transition conductor (6) comprises a first transition conductor (601) and a second transition conductor (602); One end of the first transition conductor (601) is connected to the connection terminal on the load side of the transition part (2b), and the other end is connected to the second split pole (2a02) at the same end of the load (1) as the transition part (2b). Connect to terminal three (2a0201) on the power supply side; One end of the second transition conductor (602) is connected to the connection terminal on the power supply side of the transition part (2b), and the other end is connected to one of the split pole loads at the same end of the load (1) as the transition part (2b). connected to the terminals on the side. 6. A circuit breaker according to claim 2, characterized in that: one end of each short-circuit conductor in the corresponding number of short-circuit conductors (4) is disconnected from one of the breaking parts (2a) connected to the connecting terminal on the load side of the pole, and the other end is connected to the connecting terminal on the power supply side of another broken pole located at the same end of the load in the breaking part (2a). 7. A circuit breaker according to claim 1 or 2, characterized in that: the transition part (2b) is arranged on the circuit breaker body (2), and is located through the first transition conductor (601) The side of the second breaking pole (2a02) directly connected to the load. 8. A circuit breaker according to claim 5, characterized in that: one end of the first transition conductor (601) is connected to the terminal six (2b02) on the load side of the transition part (2b), and the other One end is connected to the terminal three (2a0201) on the power supply side of the second breaking pole (2a02) at the same end of the load (1) as the transfer part (2b); One end of the second transition conductor (602) is connected to the connecting terminal five (2b01) on the power supply side of the transition part (2b), and the other end is connected to the disconnecting pole at the same end of the load (1) as the transition part (2b). The connection terminal four (2a0202) on the load side of the second (2a02) is connected. 9. A circuit breaker according to claim 5, characterized in that: the terminal six (2b02) and terminal two (2a0102) connected to the load (1) in the circuit breaker body (2) are located in the circuit breaker body (2) On one side, the terminal five (2b01) and terminal one (2a0101) connected to the power supply (3) in the circuit breaker body (2) are located on the other side of the circuit breaker body (2); The terminal six (2b02), terminal five (2b01), terminal two (2a0102) and terminal one (2a0101) are located at the outermost side of the circuit breaker body (2). 10. A circuit breaker according to claim 1 or 2, characterized in that: it also includes a series installation plate (7), the series installation plate (7) is installed on the bottom of the circuit breaker body (2), short-circuited The conductor (4) and the transfer conductor (6) are located in the space formed by the series mounting plate (7) and the bottom of the circuit breaker body (2). 11. A circuit breaker according to claim 10, characterized in that: the short-circuit conductor (4) and the transfer conductor (6) are preset in the series installation board (7). 12. A circuit breaker according to claim 10, characterized in that: the short-circuit conductor (4) and the transfer conductor (6) are matched and installed with the circuit breaker body (2), and the series installation plate (7 ) is matched with the circuit breaker body (2). 13. A circuit breaker according to claim 10, characterized in that: a part of the short-circuit conductor (4) and transfer conductor (6) is preset in the series mounting plate (7), and the remaining part is not preset. Placed in the series installation plate (7), the conductor part not preset in the series installation plate (7) is matched and installed with the circuit breaker body (2), and the series connection installation plate (7) is matched with the circuit breaker body (2) ) to match the installation.

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