阅读说明：本技术 断路器本体和断路器 (Circuit breaker body and circuit breaker ) 是由 张海山 王程程 范洪亮 马也 赵盛 于 2020-04-30 设计创作，主要内容包括：本发明提供了一种断路器本体和断路器,断路器本体包括三相传动组件,每个单相传动组件均包括真空灭弧室,铜排支撑板和设置在铜排支撑板上的灭弧室铜排；真空灭弧室静端设置有导电凸台,铜排支撑板与真空灭弧室之间通过第一固定件固定连接,且第一固定件使导电凸台与灭弧室铜排面接触。本发明的断路器本体的单相传动组件中,利用第一固定件固定连接铜排支撑板与真空灭弧室的同时,使真空灭弧室静端的导电凸台与灭弧室铜排面接触,从而保证了真空灭弧室静端与灭弧室铜排之间形成面接触,增加接触面积同时减小了接触电阻,而且面接触能够保证电连接更为可靠,提高了灭弧室静端与灭弧室铜排的导电可靠性,进而提高了长期运行稳定性。(The invention provides a circuit breaker body and a circuit breaker, wherein the circuit breaker body comprises three-phase transmission assemblies, each single-phase transmission assembly comprises a vacuum arc extinguish chamber, a copper bar supporting plate and an arc extinguish chamber copper bar arranged on the copper bar supporting plate; the static end of the vacuum arc extinguish chamber is provided with a conductive boss, the copper bar supporting plate is fixedly connected with the vacuum arc extinguish chamber through a first fixing piece, and the first fixing piece enables the conductive boss to be in contact with the arc extinguish chamber copper bar surface. In the single-phase transmission assembly of the circuit breaker body, the first fixing piece is utilized to fixedly connect the copper bar supporting plate and the vacuum arc extinguish chamber, and meanwhile, the conductive boss at the static end of the vacuum arc extinguish chamber is in surface contact with the arc extinguish chamber copper bar, so that the static end of the vacuum arc extinguish chamber is ensured to be in surface contact with the arc extinguish chamber copper bar, the contact area is increased, the contact resistance is reduced, the surface contact can ensure that the electric connection is more reliable, the conductive reliability of the arc extinguish chamber static end and the arc extinguish chamber copper bar is improved, and the long-term operation stability is further.)

1. A circuit breaker body comprises three-phase transmission assemblies, wherein each single-phase transmission assembly comprises a vacuum arc extinguish chamber (6), a copper bar supporting plate (12) and an arc extinguish chamber copper bar (13) arranged on the copper bar supporting plate (12); its characterized in that, the quiet end of vacuum interrupter (6) is provided with electrically conductive boss (61), copper bar backup pad (12) with through first mounting (18) fixed connection between vacuum interrupter (6), just first mounting (18) make electrically conductive boss (61) with interrupter copper bar (13) face contact.

2. The circuit breaker body according to claim 1, characterized in that said first fixing element (18) is a first bolt passing through said copper bar support plate (12) and said arc extinguishing chamber copper bar (13) and fixed in a threaded hole of the static end of said vacuum arc extinguishing chamber (6).

3. The circuit breaker body according to claim 2, characterized in that said first bolt is coaxial with said vacuum interrupter (6).

4. The circuit breaker body as claimed in claim 1, characterized in that the arc extinguishing chamber copper bar (13) is connected with the copper bar support plate (12) through a second fixing piece (19), the second fixing piece (19) is located beside the vacuum arc extinguishing chamber (6), the second fixing piece (19) comprises a second bolt and a fastening nut matched with the second bolt.

5. The circuit breaker body as claimed in claim 1, wherein the copper bar support plate (12) is a support bent plate, the edge of which is provided with a bent portion perpendicular to the main plate face.

6. The circuit breaker body as claimed in claim 1, wherein the phase distance between the three-phase transmission assemblies is 100-120mm, an insulating rubber sleeve (16) is disposed between each two adjacent single-phase transmission assemblies, and the insulating rubber sleeve (16) is disposed on the insulating transmission shaft connected to the three-phase transmission assemblies in a penetrating manner.

7. The circuit breaker body of claim 6, further comprising:

the two insulating side plates (15) are oppositely arranged on two sides of the three-phase transmission assembly, in each single-phase transmission assembly, two ends of the copper bar supporting plate (12) and two sides of the large shaft support (7) connected with the insulating transmission shaft are respectively fixed on the two insulating side plates (15), and two ends of an arc extinguish chamber supporting plate (11) sleeved on the vacuum arc extinguish chamber (6) are respectively inserted on the two insulating side plates (15);

a circuit breaker fixed mounting board (17) for installing fixed circuit breaker body, circuit breaker fixed mounting board (17) are located three-phase drive assembly's transmission end, two the one end of insulating curb plate (15) is fixed in on circuit breaker fixed mounting board (17).

8. A circuit breaker comprising a circuit breaker body and a 10kV sulfur hexafluoride gas insulated gas filled cabinet connected to the circuit breaker body, wherein the circuit breaker body is as claimed in any one of claims 1 to 7.

Technical Field

The invention relates to the technical field of 10kV power transmission and distribution in the power industry, in particular to a breaker body and a breaker.

Background

The circuit breaker body that 10kV sulfur hexafluoride gas insulation aerifys cabinet at present, be fixed with the explosion chamber copper bar on supporting the bent plate, the lower conducting rod of the quiet end of explosion chamber passes the explosion chamber copper bar and supports the bent plate, it is fixed through two copper nuts that are located support bent plate both sides respectively, lower conducting rod is electrically conducted through copper nut and the explosion chamber copper bar that is located between explosion chamber and the explosion chamber copper bar, and copper nut fixes and electrically conducts through the screw thread pair before with lower conducting rod, easily lead to conductive contact surface contact failure, and unstable, lead to the contact surface resistance great, when carrying out the power transmission, local temperature rise is higher, long-term operation has the potential safety hazard.

In addition, the copper nut is used for fixing, and the copper material is soft, so that the thread pair is easy to damage, and the rejection rate is high. And two nuts need to be installed, resulting in low installation efficiency.

Furthermore, the phase distance between the three phases of the existing 10kV sulfur hexafluoride gas insulated circuit breaker body is 150mm, so that the volume of the circuit breaker body is large.

Disclosure of Invention

In view of this, the present invention provides a circuit breaker body to improve the conductive reliability between the arc extinguish chamber stationary end and the arc extinguish chamber copper bar, so as to improve the long-term operation stability.

Another object of the present invention is to provide a circuit breaker having the above circuit breaker body.

In order to achieve the purpose, the invention provides the following technical scheme:

a circuit breaker body comprises three-phase transmission assemblies, wherein each single-phase transmission assembly comprises a vacuum arc extinguish chamber, a copper bar supporting plate and an arc extinguish chamber copper bar arranged on the copper bar supporting plate; the static end of vacuum interrupter is provided with electrically conductive boss, the copper bar backup pad with through first mounting fixed connection between the vacuum interrupter, just first mounting makes electrically conductive boss with explosion chamber copper bar face contact.

Preferably, in the circuit breaker body, first mounting is first bolt, first bolt passes the copper bar backup pad with the explosion chamber copper bar, and fix the threaded hole of the quiet end of vacuum interrupter.

Preferably, in the circuit breaker body, the first bolt is coaxial with the vacuum interrupter.

Preferably, in the above-mentioned circuit breaker body, the explosion chamber copper bar with the copper bar backup pad passes through the second mounting and connects, the second mounting is located vacuum interrupter side, the second mounting include the second bolt and with second bolt complex fastening nut.

Preferably, in the circuit breaker body, the copper bar supporting plate is a supporting bent plate, and a bending part perpendicular to the main board surface is arranged at the edge of the supporting bent plate.

Preferably, in the circuit breaker body, the phase distance between the three-phase transmission assemblies is 100-120mm, an insulating rubber sleeve is arranged between each two adjacent single-phase transmission assemblies, and the insulating rubber sleeve is arranged on an insulating transmission shaft connected with the three-phase transmission assemblies in a penetrating manner.

Preferably, the circuit breaker body further includes:

the two ends of the copper bar supporting plate and the two sides of the large shaft support connected with the insulating transmission shaft in each single-phase transmission assembly are respectively fixed on the two insulating side plates, and the two ends of the arc extinguish chamber supporting plate sleeved on the vacuum arc extinguish chamber are respectively inserted on the two insulating side plates;

a circuit breaker fixed mounting board for installing fixed circuit breaker body, circuit breaker fixed mounting board is located three-phase drive assembly's transmission end, two the one end of insulating curb plate is fixed in on the circuit breaker fixed mounting board.

According to the technical scheme, the single-phase transmission assembly of the circuit breaker body provided by the invention has the advantages that the first fixing piece is utilized to fixedly connect the copper bar supporting plate and the vacuum arc-extinguishing chamber, meanwhile, the conductive boss at the static end of the vacuum arc-extinguishing chamber is in surface contact with the arc-extinguishing chamber copper bar, so that the static end of the vacuum arc-extinguishing chamber is ensured to be in surface contact with the arc-extinguishing chamber copper bar, the contact area is increased, the contact resistance is reduced, the surface contact can ensure that the electric connection is more reliable, the conductive reliability of the arc-extinguishing chamber static end and the arc-extinguishing chamber copper bar is improved.

The invention also provides a breaker, which comprises a breaker body and a 10kV sulfur hexafluoride gas insulation gas-filled cabinet connected with the breaker body, wherein the breaker body is any one of the breaker bodies, and the breaker body has the same effect as the breaker with the breaker body, so the description is omitted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a vacuum interrupter provided by an embodiment of the present invention;

fig. 2 is a perspective view of the vacuum interrupter provided in the embodiment of the present invention after being connected to a supporting flexural plate;

FIG. 3 is a perspective view of a single phase drive assembly provided by an embodiment of the present invention;

FIG. 4 is a front view of a single phase drive assembly provided by an embodiment of the present invention;

FIG. 5 is a side view of a single phase drive assembly provided by an embodiment of the present invention;

fig. 6 is a partial perspective view of a circuit breaker body provided by an embodiment of the present invention;

fig. 7 is a perspective view of a circuit breaker body according to an embodiment of the present invention.

In the above FIGS. 1-7:

1-pin, 2-top sleeve, 3-guide rod, 4-overtravel spring, 5-arc extinguish chamber flexible connection, 6-vacuum arc extinguish chamber, 61-conductive boss, 7-large shaft support, 8-rotating shaft sleeve, 9-baffle sleeve, 10-limit sleeve, 11-arc extinguish chamber support plate, 12-copper bar support plate, 13-arc extinguish chamber copper bar, 14-insulating hexagonal shaft, 15-insulating side plate, 16-insulating rubber sleeve, 17-breaker fixing and mounting plate, 18-first fixing piece and 19-second fixing piece.

Detailed Description

The embodiment of the invention provides a circuit breaker body, which can improve the conductive reliability of a static end of an arc extinguish chamber and an arc extinguish chamber copper bar, and further improve the long-term operation stability.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the circuit breaker body according to the embodiment of the present invention includes three-phase transmission assemblies, each of which includes a vacuum arc-extinguishing chamber 6, a copper bar supporting plate 12, and an arc-extinguishing chamber copper bar 13 disposed on the copper bar supporting plate 12; the static end of the vacuum arc extinguish chamber 6 is provided with a conductive boss 61, as shown in fig. 1, the copper bar support plate 12 is fixedly connected with the vacuum arc extinguish chamber 6 through a first fixing member 18, and the first fixing member 18 enables the conductive boss 61 to be in surface contact with the arc extinguish chamber copper bar 13.

It should be noted that the conductive boss 61 only needs to protrude slightly with respect to the bottom end of the vacuum interrupter 6, thereby avoiding increasing the axial height of the vacuum interrupter 6.

In the single-phase transmission assembly of circuit breaker body that this embodiment provided, when utilizing 18 fixed connection copper bar backup pads 12 of first mounting and vacuum interrupter 6, make the electrically conductive boss 61 and the 13 face contacts of explosion chamber copper bar of the quiet end of vacuum interrupter 6, thereby guaranteed to form face contact between 6 quiet ends of vacuum interrupter and the explosion chamber copper bar 13, increase area of contact has reduced contact resistance simultaneously, and face contact can guarantee that the electricity is connected more reliably, the electrically conductive reliability of the quiet end of explosion chamber and explosion chamber copper bar 13 has been improved, and then long-term operation stability has been improved.

Preferably, the first fixing member 18 is a first bolt, and the first bolt passes through the copper bar supporting plate 12 and the arc extinguish chamber copper bar 13 and is fixed in a threaded hole at the static end of the vacuum arc extinguish chamber 6. As shown in fig. 2, the copper bar supporting plate 12, the arc extinguish chamber copper bar 13 and the static end of the vacuum arc extinguish chamber 6 are fixed together by using bolts, so that the connection reliability of the three is improved; simultaneously, the fastening strength of the first bolt is better, and the assembly is convenient. Meanwhile, other parts are not arranged between the static end of the vacuum arc extinguish chamber 6 and the arc extinguish chamber copper bar 13, so that the height of the single-phase transmission assembly in the axial direction is reduced, the reduction proportion in height reaches 15% compared with the prior art, the occupied space is reduced, and the installation is more convenient.

It can be understood that the first fixing element 18 may also be a fixing nut, and at this time, the static end of the vacuum arc-extinguishing chamber 6 has a stud capable of passing through the copper plate supporting plate, and the stud may be separately arranged relative to the conductive boss 61, or may be arranged in the middle of the conductive boss 61, and does not affect the surface contact between the conductive boss 61 and the arc-extinguishing chamber copper bar 13.

In order to further simplify the structure, the first bolt is coaxial with the vacuum arc-extinguishing chamber 6; at the moment, the static end of the vacuum arc extinguish chamber 6 is provided with the conductive boss 61 in the axis position, and meanwhile, the center of the conductive boss 61 is provided with the threaded hole, so that the structure is simplified, and the fixing stability of the vacuum arc extinguish chamber 6 is ensured. Of course, the axis of the first bolt can also be located on one side of the axis of the vacuum interrupter 6.

In a specific embodiment, the arc extinguish chamber copper bar 13 is connected with the copper bar supporting plate 12 through a second fixing member 19, the second fixing member 19 is located beside the vacuum arc extinguish chamber 6, and the second fixing member 19 comprises a second bolt and a fastening nut matched with the second bolt. As shown in fig. 2, the arc extinguish chamber copper bar 13 is fixed on the copper bar supporting plate 12 by the cooperation of the second bolt and the fastening nut, so that the installation is convenient.

The number of the second fixing members 19 is two, and the number thereof may be other. Second mounting 19 can also adopt double-screw bolt and two nuts or riveting mounting isotructure to realize the same explosion chamber copper bar 13 and copper bar backup pad 12 fixed connection's purpose, this application no longer gives unnecessary details one by one here.

In order to facilitate installation and improve strength, the copper bar supporting plate 12 is a supporting bent plate, and a bending part perpendicular to the main plate surface is arranged at the edge of the supporting bent plate. The support bent plate is specifically a rectangular plate, four edges are respectively provided with four bending parts, and the directions of the bending parts are opposite in a staggered manner.

In the circuit breaker body that this application provided, every single-phase transmission assembly includes pin 1, top cover 2, guide bar 3, overtravel spring 4, explosion chamber flexible coupling 5, vacuum interrupter 6, macroaxis support 7, pivot cover 8, spacer 9, stop collar 10, explosion chamber backup pad 11, supports bent plate, explosion chamber copper bar 13.

As shown in fig. 1 and 2, the arc-extinguishing chamber flexible connector 5 is fixed on the vacuum arc-extinguishing chamber 6 through the guide rod 3. The overtravel spring 4 is threaded on the guide rod 3. The top sleeve 2 compresses the overtravel spring 4, and the top sleeve 2 and the guide rod 3 are fixed together through the pin 1.

As shown in fig. 3, 4 and 5, at the stationary end of the vacuum arc-extinguishing chamber 6, the arc-extinguishing chamber copper bar 13 is fixed with the supporting bent plate through the second fixing member 19, and then fixed with the stationary end of the vacuum arc-extinguishing chamber 6 through the first fixing member 18, and meanwhile, the conductive boss 61 is ensured to be in surface contact with the arc-extinguishing chamber copper bar 13.

At the movable end of the vacuum arc extinguish chamber 6, an arc extinguish chamber supporting plate 11 is sleeved on the vacuum arc extinguish chamber 6. And a limiting sleeve 10 and a blocking sleeve 9 are sequentially arranged on two sides of the pin 1 from inside to outside. The limiting sleeve 10 is provided with a rotating shaft sleeve 8. A large shaft support 7 is arranged between the two rotating shaft sleeves 8. The spindle sleeve 8 can rotate on the large spindle support 7.

In a further technical scheme, as shown in fig. 6-7, the phase distance between the three-phase transmission assemblies is 100-120mm, an insulating rubber sleeve 16 is arranged between each two adjacent single-phase transmission assemblies, and the insulating rubber sleeve 16 is arranged on an insulating transmission shaft connected with the three-phase transmission assemblies in a penetrating manner.

Insulating transmission shaft and in proper order with three pivot cover 8 fixed cup joints of three-phase drive assembly, it is specific, set up the hexagonal hole on the pivot cover 8, insulating transmission shaft for with this hexagonal hole complex insulating hexagonal axle 14, worn insulating rubber cover 16 on the insulating hexagonal axle 14.

This application has reduced the looks interval distance between the three-phase drive assembly, guarantees the insulating nature between the three-phase through insulating rubber sleeve 16 simultaneously, reaches and reduces circuit breaker body volume, makes the circuit breaker body reduce the proportion on the degree of depth for prior art and reaches 15%, easy to assemble.

The cross section of the insulated transmission shaft can also be in other shapes, such as a rectangle.

In order to facilitate assembly, the circuit breaker body further comprises two insulating side plates 15 which are oppositely arranged on two sides of the three-phase transmission assembly, in each single-phase transmission assembly, two ends of a copper bar supporting plate 12 and two sides of a large shaft support 7 connected with an insulating transmission shaft are respectively fixed on the two insulating side plates 15, and two ends of an arc extinguish chamber supporting plate 11 sleeved on the vacuum arc extinguish chamber 6 are respectively inserted into the two insulating side plates 15; a circuit breaker fixed mounting board 17 for installing fixed circuit breaker body, circuit breaker fixed mounting board 17 are located three-phase drive assembly's transmission end, and the one end of two insulating curb plates 15 is fixed in on circuit breaker fixed mounting board 17.

As shown in fig. 6 and 7, both ends of the supporting bent plate are fixed to the insulating side plates 15, respectively. The two ends of the arc extinguish chamber supporting plate 11 are inserted on the insulating side plate 15. Two sides of the large shaft support 7 are respectively fixed with the insulating side plate 15. The transmission end of the insulating side plate 15 is fixed with the breaker fixing and mounting plate 17.

The two insulation side plates 15 enable the periphery of the circuit breaker body to be provided with an insulation protection layer on one hand, and potential safety hazards are reduced; on the other hand, cooperation circuit breaker fixed mounting board 17 assembles three-phase drive assembly into a whole, more easy to assemble.

The embodiment of the invention also provides a circuit breaker, which comprises a circuit breaker body and a 10kV sulfur hexafluoride gas insulation gas inflation cabinet connected with the circuit breaker body, wherein the circuit breaker body is the circuit breaker body provided by any one of the embodiments, the electric conduction reliability of the arc extinguish chamber static end and the arc extinguish chamber copper bar 13 can be improved, the long-term operation stability can be further improved, and the size of the circuit breaker body can be reduced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.