CN220367861U - Double-circuit breaker combined electrical apparatus - Google Patents

Abstract

The utility model provides a double-circuit breaker combined electrical apparatus, comprising: the first circuit breaker comprises a first shell and a first conductor, wherein the first conductor is positioned in a first accommodating space of the first shell; the second circuit breaker comprises a second shell and a second conductor, and the second conductor is positioned in a second accommodating space of the second shell; an insulating sleeve at least partially positioned in the first accommodating space and/or the second accommodating space, one end of the insulating sleeve is connected with the first conductor, and the other end of the insulating sleeve is connected with the second conductor; the two ends of the connecting conductor are respectively connected with the first conductor and the second conductor; the insulation sleeve is connected with the inner wall of the first shell and the inner wall of the second shell, so that the insulation sleeve is fixed on the first shell and the second shell, and meanwhile, the end part of the first shell and the end part of the second shell are connected with each other, so that the problem that the double circuit breaker combined electrical apparatus in the prior art is complex in structure is solved.

Description

Double-circuit breaker combined electrical apparatus

Technical Field

The utility model relates to the technical field of high-voltage switch equipment, in particular to a double-circuit breaker combined electrical appliance.

Background

Currently, in the use mode of overseas combined electrical apparatuses (HGIS), there is an H-type main wiring mode, in this wiring, the overseas user uses the HGIS configured for double circuit breakers more, and the conductors of two sets of circuit breakers are electrically connected in the air chamber, compared with using two independent sets of combined electrical apparatuses, the combined electrical apparatus (HGIS) configured for double circuit breakers has advantages of simple structure, lower cost, small occupied area, etc.

However, the two circuit breakers of the existing double-circuit breaker combined electrical apparatus are generally electrically connected and fixedly connected with conductors inside the two circuit breakers by adopting a scheme of a disc type (basin type) insulator, wherein in the scheme of disc type (basin type) insulator connection, a transition flange is further arranged between two sets of circuit breaker shells, the transition flange, the flange of the insulator and the flange of the circuit breaker shell are connected together through bolts, so that connection gaps are respectively arranged between the two circuit breaker shells and the insulator and the transition flange, and connection gaps are also arranged between the transition flange and the insulator, and a sealing structure is arranged between the circuit breaker shells and the insulator, between the circuit breaker shells and the transition flange and between the transition flange and the insulator.

Disclosure of Invention

The utility model mainly aims to provide a double-circuit breaker combined electrical appliance, which aims to solve the problem that the double-circuit breaker combined electrical appliance in the prior art is complex in structure.

In order to achieve the above object, the present utility model provides a dual breaker assembly including: the first circuit breaker comprises a first shell and a first conductor, and the first conductor is positioned in a first accommodating space of the first shell; the second circuit breaker comprises a second shell and a second conductor, and the second conductor is positioned in a second accommodating space of the second shell; the insulation sleeve is at least partially positioned in the first accommodating space and the second accommodating space, one end of the insulation sleeve is connected with the first conductor, and the other end of the insulation sleeve is connected with the second conductor; the connecting conductor is arranged in the cylinder cavity of the insulating sleeve in a penetrating way, and two ends of the connecting conductor are respectively connected with the first conductor and the second conductor; wherein, insulating sleeve is connected with the internal wall face of first casing and the internal wall face of second casing to fix insulating sleeve on first casing and second casing, interconnect between the tip of first casing and the tip of second casing simultaneously.

Further, the insulating sleeve is provided with a first connecting protrusion, the inner wall surface of the first accommodating space and the inner wall surface of the second accommodating space are both provided with a second connecting protrusion, and the first connecting protrusion is connected with the second connecting protrusion on the inner wall surface of the first accommodating space and the second connecting protrusion on the inner wall surface of the second accommodating space.

Further, the insulating sleeve includes: a first sleeve section located in the first receiving space, the first sleeve section being connected to the first conductor; a second sleeve section located within the second receiving space, the second sleeve section being connected to the second conductor; wherein, first sleeve section and second sleeve section interval set up, and first sleeve section and second sleeve section all have first connection protruding, and the first connection protruding of first sleeve section is connected with the second connection protruding of first casing, and the first connection protruding of second sleeve section is connected with the second connection protruding of second casing.

Further, each of the first coupling projections is located between the second coupling projection in the first accommodation space and the second coupling projection in the second accommodation space; and/or, the insulating sleeve further comprises: two connecting flanges, one connecting flange is detachably connected with one end of the first sleeve section, which is close to the second sleeve section, and the other connecting flange is detachably connected with one end of the second sleeve section, which is close to the first sleeve section; wherein the minimum cross-sectional area of each connecting flange is greater than the maximum cross-sectional area of the first sleeve section and the second sleeve section, respectively.

Further, the second connection protrusion of the first casing and the second connection protrusion of the second casing are all a plurality of, and a plurality of second connection protrusions set up along the circumference interval of first casing or second casing, and double circuit breaker combination electrical apparatus still includes: the first fasteners and the second connecting protrusions are arranged in a one-to-one correspondence manner, and each first fastener is arranged on the first connecting protrusion and the corresponding second connecting protrusion in a penetrating manner so as to connect the insulating sleeve, the first shell and the second shell.

Further, the dual breaker assembly further includes: the contact seat is provided with a mounting groove, the contact seat is mounted in the mounting groove and connected with the insulating sleeve, the contact seat is provided with an inserting cavity, and after at least part of the connecting conductor is inserted in the inserting cavity, the connecting conductor is abutted with the second conductor.

Further, the dual breaker assembly includes: the first shielding cover is positioned between the first end of the insulating sleeve and the first conductor, the first shielding cover is provided with first shielding grooves along the two sides of the extending direction of the insulating sleeve, and the first conductor and the first end of the insulating sleeve are respectively positioned in the first shielding grooves on the two sides of the first shielding cover; the second shielding cover is positioned between the second end of the insulating sleeve and the second conductor, second shielding grooves are formed in two sides of the second shielding cover along the extending direction of the insulating sleeve, and the second conductor and the second end of the insulating sleeve are respectively positioned in the second shielding grooves on two sides of the second shielding cover; at least part of the contact seat is positioned in the second shielding groove, and the connecting conductor is inserted into the inserting cavity after penetrating through the second shielding cover.

Further, a spring contact finger is arranged in the contact seat, and when the second conductor and the connecting conductor are in a closing state, the spring contact finger is sleeved on the connecting conductor and is positioned between the connecting conductor and the contact seat; and/or, the bottom wall of the second shielding groove on one side of the second shielding cover, which is close to the contact seat, is provided with a first groove section and a second groove section which are connected with each other, the maximum cross-sectional area of the first groove section is smaller than the minimum cross-sectional area of the second groove section, so that a limit step is formed between the first groove section and the second groove section, the contact seat is provided with a limit bulge, and the limit bulge is positioned in the first groove section and is in limit fit with the limit step.

Further, the end part of the first shell and the end part of the second shell are both provided with third connecting protrusions, the double-circuit breaker combined electrical appliance further comprises second fastening pieces, and the second fastening pieces are arranged on the third connecting protrusions of the first shell and the third connecting protrusions of the second shell in a penetrating manner so as to connect the first shell and the second shell; wherein each of the third connection protrusions protrudes toward the outside of the first housing or the second housing.

Further, the dual breaker assembly further includes: and a sealing member between the third coupling projection of the first housing and the third coupling projection of the second housing.

The utility model provides a double-circuit breaker combined electrical appliance, which comprises: the first circuit breaker comprises a first shell and a first conductor, and the first conductor is positioned in a first accommodating space of the first shell; the second circuit breaker comprises a second shell and a second conductor, and the second conductor is positioned in a second accommodating space of the second shell; the insulation sleeve is at least partially positioned in the first accommodating space and the second accommodating space, one end of the insulation sleeve is connected with the first conductor, and the other end of the insulation sleeve is connected with the second conductor; the connecting conductor is arranged in the cylinder cavity of the insulating sleeve in a penetrating way, and two ends of the connecting conductor are respectively connected with the first conductor and the second conductor; wherein, insulating sleeve has first connection arch, the internal face of first accommodation space and the internal face of second accommodation space all are provided with the second and connect protruding, the second on the internal face of first accommodation space is connected protruding and the internal face of second accommodation space is connected protruding all, with insulating sleeve fixes on first casing and second casing, interconnect between the tip of first casing and the tip of second casing simultaneously, like this, can wholly set up the inboard at first accommodation space and second accommodation space with the insulating sleeve, with lug connection first casing and second casing, need not to link together first casing, the flange three of second casing and insulator, make things convenient for the connection between first casing and the second casing, thereby solve the problem that double circuit breaker combination electrical apparatus among the prior art's structure is complicated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic view showing the overall structure of an embodiment of a double circuit breaker assembly according to the present utility model;

fig. 2 shows an enlarged schematic view of a first circuit breaker and a second circuit breaker connection of a double circuit breaker assembly according to the present utility model;

FIG. 3 shows an enlarged schematic view of region A of the double circuit breaker assembly according to FIG. 2;

fig. 4 is a schematic structural view showing a second connection protrusion and a third connection protrusion of the dual breaker assembly according to the present utility model;

fig. 5 shows a schematic structural view of a connection flange of a double circuit breaker assembly according to the present utility model.

Wherein the above figures include the following reference numerals:

10. a first circuit breaker; 11. a first housing; 12. a first conductor; 100. a first accommodation space; 20. a second circuit breaker; 21. a second housing; 22. a second conductor; 200. a second accommodation space; 30. an insulating sleeve; 40. a connection conductor; 310. a first connection protrusion; 101. a second connection protrusion; 31. a first sleeve segment; 32. a second sleeve segment; 33. a connecting flange; 110. a first fastener; 50. a contact base; 220. a mounting groove; 500. a cavity is inserted; 34. a first shield; 340. a first shielding groove; 35. a second shield; 350. a second shielding groove; 60. spring contact fingers; 351. a first groove section; 352. a second groove segment; 353. a limit step; 51. a limit protrusion; 102. a third connection protrusion; 120. a second fastener; 70. a seal; 130. a third fastener; 140. a fourth fastener; 150. a fifth fastener; 160. and a sixth fastener.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 5, the present utility model provides a dual breaker assembly, comprising: a first circuit breaker 10, the first circuit breaker 10 including a first housing 11 and a first conductor 12, the first conductor 12 being located in a first accommodation space 100 of the first housing 11; a second circuit breaker 20, the second circuit breaker 20 including a second housing 21 and a second conductor 22, the second conductor 22 being located in a second receiving space 200 of the second housing 21; an insulating sleeve 30, at least part of the insulating sleeve 30 is positioned in the first accommodating space 100 and the second accommodating space 200, one end of the insulating sleeve 30 is connected with the first conductor 12, and the other end of the insulating sleeve 30 is connected with the second conductor 22; the connecting conductor 40 is penetrated in the cylinder cavity of the insulating sleeve 30, and two ends of the connecting conductor 40 are respectively connected with the first conductor 12 and the second conductor 22; wherein, insulating sleeve 30 is all connected with the internal face of first casing 11 and the internal face of second casing 21, with insulating sleeve 30 is fixed on first casing and second casing, interconnect between the tip of first casing 11 and the tip of second casing 21 like this simultaneously, can wholly set up the inboard at first accommodation space and second accommodation space with the insulating sleeve, with direct connection first casing 11 and second casing 21, need not to link together the flange three of first casing, second casing and insulator, make things convenient for the connection between first casing and the second casing, thereby solve the problem that the structure of double circuit breaker combined electrical apparatus among the prior art is complicated.

Specifically, the insulating sleeve 30 has the first connection protrusion 310, and the inner wall surface of the first accommodation space 100 and the inner wall surface of the second accommodation space 200 are each provided with the second connection protrusion 101, and the first connection protrusion 310 is connected to the second connection protrusion 101 on the inner wall surface of the first accommodation space 100 and the second connection protrusion 101 on the inner wall surface of the second accommodation space 200, so that the connection between the insulating sleeve 30 and the first and second housings 11 and 21 can be stabilized.

In the present application, the insulating sleeve 30 includes: a first sleeve segment 31, the first sleeve segment 31 being located in the first receiving space 100, the first sleeve segment 31 being connected to the first conductor 12; a second sleeve segment 32, the second sleeve segment 32 being located within the second receiving space 200, the second sleeve segment 32 being connected to the second conductor 22; wherein the first sleeve segment 31 and the second sleeve segment 32 are arranged at intervals, the first sleeve segment 31 and the second sleeve segment 32 are provided with a first connecting protrusion 310, the first connecting protrusion 310 of the first sleeve segment 31 is connected with the second connecting protrusion 101 of the first shell 11, and the first connecting protrusion 310 of the second sleeve segment 32 is connected with the second connecting protrusion 101 of the second shell 21. Through the arrangement, different connection structures in different circuit breakers can be adapted through different sleeve sections, so that the flexibility of connection between the first circuit breaker and the second circuit breaker is improved.

In this application, each of the first coupling protrusions 310 is positioned between the second coupling protrusion 101 in the first receiving space 100 and the second coupling protrusion 101 in the second receiving space 200 to facilitate the disassembly of the first insulation section and the second insulation section after the disassembly between the first housing and the second housing; and/or, if the second connecting protrusion and the first insulating section or the second insulating section are integrally formed, then in the process of disassembling and assembling the first insulating section and the second insulating section, the second connecting protrusion 101 is easy to interfere with the first connecting protrusion 310, so that the insulating sleeve 30 of the present application further comprises: two connection flanges 33, one connection flange 33 is detachably connected with one end of the first sleeve section 31 adjacent to the second sleeve section 32, the other connection flange 33 is detachably connected with one end of the second sleeve section 32 adjacent to the first sleeve section 31, so that after the first sleeve section is connected with the first conductor, the second sleeve section is connected with the second conductor, one connection flange is connected with the first sleeve section, the other connection flange is connected with the second sleeve section, and the two connection flanges are respectively connected with the second connection protrusion of the first shell and the second connection protrusion of the second shell, thereby facilitating the disassembly and assembly of the insulating sleeve; wherein the smallest cross-sectional area of each connecting flange 33 is larger than the largest cross-sectional area of the first sleeve section 31 and the second sleeve section 32, respectively, such that both connecting flanges 33 form a corresponding first connecting projection 310 for connecting the connecting flange 33 with the second connecting projection.

Specifically, the two connecting flanges 33 are connected with the first insulation section and the second insulation section through the third fastener 130; the connection conductor 40 is connected with the first conductor 12 through a fourth fastener 140; the first insulation section, the first shielding case and the first conductor are connected through a fifth fastener 150, and the second insulation section, the second shielding case and the second conductor are also connected through the fifth fastener 150; the contact base and the second shielding cover are connected through a sixth fastener 160; wherein the sixth fastener is located inboard of the fifth fastener 150.

The first fastener, the second fastener, the third fastener, the fourth fastener, the fifth fastener and the sixth fastener are all bolts and screws.

Preferably, in order to improve connection stability between the first housing, the second housing and the insulating sleeve, the second connection protrusion 101 of the first housing 11 and the second connection protrusion 101 of the second housing 21 of the present application are all plural, and the plural second connection protrusions 101 are disposed along the circumferential direction of the first housing 11 or the second housing 21 at intervals, and the dual breaker combination apparatus further includes: the plurality of first fasteners 110 are disposed in one-to-one correspondence with the plurality of second connection protrusions 101, and each of the first fasteners 110 is penetrated through the first connection protrusion 310 and the corresponding second connection protrusion 101 to connect the insulating sleeve 30, the first housing 11, and the second housing 21.

Specifically, the dual breaker assembly further includes: the second conductor 22 is provided with a mounting groove 220 on the contact base 50, the contact base 50 is mounted in the mounting groove 220, the contact base 50 is connected with the insulating sleeve 30, the contact base 50 is provided with an inserting cavity 500, and after at least part of the connecting conductor 40 is inserted into the inserting cavity 500, the connecting conductor 40 is abutted against the second conductor 22. In the operation state of the double-circuit breaker combined electrical apparatus, the conductor can generate thermal expansion and cold contraction phenomena due to the effects of current, temperature difference and the like, and the sliding connection design of the connecting conductor 40 and the contact seat can effectively ensure the reliability of the electrical connection of products.

Because partial discharge is easily generated at the three-junction between the conductor, the insulating sleeve and the air, the double circuit breaker combination electrical apparatus comprises: the first shielding cover 34, the first shielding cover 34 is located between the first end of the insulating sleeve 30 and the first conductor 12, both sides of the first shielding cover 34 along the extending direction of the insulating sleeve 30 are provided with first shielding grooves 340, and the first conductor 12 and the first end of the insulating sleeve 30 are respectively located in the first shielding grooves 340 at both sides of the first shielding cover 34; the second shielding cover 35, the second shielding cover 35 is located between the second end of the insulating sleeve 30 and the second conductor 22, both sides of the second shielding cover 35 along the extending direction of the insulating sleeve 30 are provided with second shielding grooves 350, and the second conductor 22 and the second end of the insulating sleeve 30 are respectively located in the second shielding grooves 350 on both sides of the second shielding cover 35; at least a portion of the contact base 50 is located in the second shielding groove 350, and the connection conductor 40 is inserted into the insertion cavity 500 after being inserted into the second shielding case 35. In this way, the insulation properties of the first accommodation space and the second accommodation space can be improved by the first shield case and the second shield case.

Wherein the first shield 34 and the second shield 35 are both made of an electrically conductive material.

In the present application, the spring contact finger 60 is disposed in the contact base 50, and when the second conductor 22 and the connection conductor 40 are in a closed state, the spring contact finger 60 is sleeved on the connection conductor 40 and is located between the connection conductor 40 and the contact base 50, so that the second conductor and the connection conductor are electrically connected, and the electrical conductivity is good; and/or, the bottom wall of the second shielding groove 350 on one side of the second shielding cover 35 near the contact base 50 is provided with a first groove section 351 and a second groove section 352 which are connected with each other, the maximum cross-sectional area of the first groove section 351 is smaller than the minimum cross-sectional area of the second groove section 352, so that a limit step 353 is formed between the first groove section 351 and the second groove section 352, the contact base 50 is provided with a limit protrusion 51, and the limit protrusion 51 is positioned in the first groove section 351 and is in limit fit with the limit step 353, so that the contact base 50 is stably installed and has high positioning accuracy.

In order to improve the connection strength of the first and second cases 11 and 21, the end of the first case 11 and the end of the second case 21 are provided with the third connection protrusion 102, and the dual breaker combination further includes a second fastener 120, the second fastener 120 being penetrated on the third connection protrusion 102 of the first case 11 and the third connection protrusion 102 of the second case 21 to connect the first case 11 and the second case 21; wherein each of the third connection protrusions 102 protrudes toward the outside of the first housing 11 or the second housing 21.

In order to improve the leakproofness of the double-circuit breaker combined electrical apparatus, the double-circuit breaker combined electrical apparatus further includes: seal 70, seal 70 is located between third connecting projection 102 of first housing 11 and third connecting projection 102 of second housing 21. Moreover, by the arrangement, only one sealing element can be arranged, so that the use of the sealing element is reduced.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the utility model provides a double-circuit breaker combined electrical apparatus, comprising: a first circuit breaker 10, the first circuit breaker 10 including a first housing 11 and a first conductor 12, the first conductor 12 being located in a first accommodation space 100 of the first housing 11; a second circuit breaker 20, the second circuit breaker 20 including a second housing 21 and a second conductor 22, the second conductor 22 being located in a second receiving space 200 of the second housing 21; an insulating sleeve 30, at least part of the insulating sleeve 30 is positioned in the first accommodating space 100 and the second accommodating space 200, one end of the insulating sleeve 30 is connected with the first conductor 12, and the other end of the insulating sleeve 30 is connected with the second conductor 22; the connecting conductor 40 is penetrated in the cylinder cavity of the insulating sleeve 30, and two ends of the connecting conductor 40 are respectively connected with the first conductor 12 and the second conductor 22; wherein, the insulating sleeve 30 has the first connection protrusion 310, the inner wall surface of the first accommodation space 100 and the inner wall surface of the second accommodation space 200 are all provided with the second connection protrusion 101, the first connection protrusion 310 is connected with the second connection protrusion 101 on the inner wall surface of the first accommodation space 100 and the second connection protrusion 101 on the inner wall surface of the second accommodation space 200, so as to fix the insulating sleeve 30 on the first shell and the second shell, and meanwhile, the end of the first shell 11 and the end of the second shell 21 are mutually connected, thus, the insulating sleeve can be integrally arranged on the inner sides of the first accommodation space and the second accommodation space to directly connect the first shell 11 and the second shell 21, and the flange three of the first shell, the second shell and the insulator are not required to be connected together, thereby facilitating the connection between the first shell and the second shell, and solving the problem of complex structure of the double-combined circuit breaker in the prior art.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A double circuit breaker assembly, comprising:

-a first circuit breaker (10), the first circuit breaker (10) comprising a first housing (11) and a first conductor (12), the first conductor (12) being located within a first accommodation space (100) of the first housing (11);

-a second circuit breaker (20), the second circuit breaker (20) comprising a second housing (21) and a second conductor (22), the second conductor (22) being located within a second accommodation space (200) of the second housing (21);

an insulating sleeve (30), at least part of the insulating sleeve (30) is positioned in the first accommodating space (100) and the second accommodating space (200), one end of the insulating sleeve (30) is connected with the first conductor (12), and the other end of the insulating sleeve (30) is connected with the second conductor (22);

the connecting conductor (40) is penetrated in the cylinder cavity of the insulating sleeve (30), and two ends of the connecting conductor (40) are respectively connected with the first conductor (12) and the second conductor (22);

wherein the insulating sleeve (30) is connected to both the inner wall surface of the first housing (11) and the inner wall surface of the second housing (21) so as to fix the insulating sleeve (30) to the first housing (11) and the second housing (21), while the end of the first housing (11) and the end of the second housing (21) are connected to each other.

2. A double circuit breaker assembly according to claim 1, wherein,

the insulating sleeve (30) is provided with a first connecting protrusion (310), the inner wall surface of the first accommodating space (100) and the inner wall surface of the second accommodating space (200) are respectively provided with a second connecting protrusion (101), and the first connecting protrusion (310) is respectively connected with the second connecting protrusion (101) on the inner wall surface of the first accommodating space (100) and the second connecting protrusion (101) on the inner wall surface of the second accommodating space (200).

3. Double circuit breaker assembly according to claim 2, characterized in that the insulating sleeve (30) comprises:

-a first sleeve segment (31), said first sleeve segment (31) being located within said first receiving space (100), said first sleeve segment (31) being connected to said first conductor (12);

-a second sleeve segment (32), said second sleeve segment (32) being located within said second receiving space (200), said second sleeve segment (32) being connected to said second conductor (22);

wherein first sleeve section (31) with second sleeve section (32) interval sets up, first sleeve section (31) with second sleeve section (32) all have first connecting protrusion (310), first connecting protrusion (310) of first sleeve section (31) with second connecting protrusion (101) of first casing (11) are connected, first connecting protrusion (310) of second sleeve section (32) with second connecting protrusion (101) of second casing (21) are connected.

4. A double circuit breaker assembly according to claim 3, wherein each of the first connection protrusions (310) is located between a second connection protrusion (101) in the first accommodation space (100) and a second connection protrusion (101) in the second accommodation space (200); and/or the number of the groups of groups,

the insulating sleeve (30) further comprises: -two connection flanges (33), one connection flange (33) being detachably connected to an end of the first sleeve section (31) adjacent to the second sleeve section (32), the other connection flange (33) being detachably connected to an end of the second sleeve section (32) adjacent to the first sleeve section (31); wherein the minimum cross-sectional area of each connecting flange (33) is greater than the maximum cross-sectional area of the first sleeve section (31) and the second sleeve section (32), respectively.

5. A double circuit breaker assembly according to claim 3, wherein the second connection protrusion (101) of the first housing (11) and the second connection protrusion (101) of the second housing (21) are each plural, and the plural second connection protrusions (101) are disposed at intervals along the circumferential direction of the first housing (11) or the second housing (21), the double circuit breaker assembly further comprising:

the first fasteners (110) are arranged in a one-to-one correspondence with the second connecting protrusions (101), and each first fastener (110) is arranged on the first connecting protrusion (310) and the corresponding second connecting protrusion (101) in a penetrating manner so as to connect the insulating sleeve (30), the first shell (11) and the second shell (21).

6. The dual breaker assembly of claim 1, further comprising:

the contact base (50), be provided with mounting groove (220) on second conductor (22), contact base (50) are installed in mounting groove (220), contact base (50) with insulating sleeve (30) are connected, contact base (50) have and insert establish cavity (500), at least part of connecting conductor (40) is inserted and is established after inserting in establishing cavity (500), connecting conductor (40) with second conductor (22) butt.

7. A double circuit breaker assembly according to claim 6, wherein the double circuit breaker assembly comprises:

a first shielding cover (34), wherein the first shielding cover (34) is positioned between the first end of the insulating sleeve (30) and the first conductor (12), the first shielding cover (34) is provided with first shielding grooves (340) along the two sides of the extending direction of the insulating sleeve (30), and the first ends of the first conductor (12) and the insulating sleeve (30) are respectively positioned in the first shielding grooves (340) at the two sides of the first shielding cover (34);

a second shielding cover (35), wherein the second shielding cover (35) is positioned between the second end of the insulating sleeve (30) and the second conductor (22), the second shielding cover (35) is provided with second shielding grooves (350) along the two sides of the extending direction of the insulating sleeve (30), and the second conductor (22) and the second end of the insulating sleeve (30) are respectively positioned in the second shielding grooves (350) at the two sides of the second shielding cover (35);

at least part of the contact seat (50) is positioned in the second shielding groove (350), and the connecting conductor (40) is inserted into the inserting cavity (500) after penetrating through the second shielding cover (35).

8. A double circuit breaker assembly according to claim 7, wherein,

a spring contact finger (60) is arranged in the contact base (50), and when the second conductor (22) and the connecting conductor (40) are in a closing state, the spring contact finger (60) is sleeved on the connecting conductor (40) and is positioned between the connecting conductor (40) and the contact base (50); and/or the number of the groups of groups,

the bottom wall of a second shielding groove (350) on one side, close to the contact seat (50), of the second shielding cover (35) is provided with a first groove section (351) and a second groove section (352) which are connected with each other, the maximum cross-sectional area of the first groove section (351) is smaller than the minimum cross-sectional area of the second groove section (352), so that a limiting step (353) is formed between the first groove section (351) and the second groove section (352), the contact seat (50) is provided with a limiting protrusion (51), and the limiting protrusion (51) is positioned in the first groove section (351) and is in limiting fit with the limiting step (353).

9. Double circuit breaker assembly according to any of claims 1 to 8, characterized in that,

the double-circuit breaker combined electrical appliance further comprises a second fastener (120), wherein the second fastener (120) is arranged on the third connecting protrusion (102) of the first shell (11) and the third connecting protrusion (102) of the second shell (21) in a penetrating way so as to connect the first shell (11) and the second shell (21);

wherein each of the third connection protrusions (102) protrudes toward the outside of the first housing (11) or the second housing (21).

10. The dual breaker assembly of claim 9, further comprising:

-a seal (70), the seal (70) being located between a third connection protrusion (102) of the first housing (11) and a third connection protrusion (102) of the second housing (21).