阅读说明：本技术 一种带机械联锁的换相开关 (Phase-change switch with mechanical interlock ) 是由 高明 吴祥昆 刘日松 杜学峰 于 2019-10-29 设计创作，主要内容包括：本发明涉及一种带机械联锁的换相开关,包括壳体、A相塑壳断路器、B相塑壳断路器、C相塑壳断路器、切换机构,所述的A相塑壳断路器、B相塑壳断路器、C相塑壳断路器并排设置在壳体内,切换机构包括支撑板、长拨杆、两个短拨杆,长拨杆的两端分别朝A相塑壳断路器的A相手柄、C相塑壳断路器的C相手柄方向延伸,且构成A相手柄、C相手柄与长拨杆的联动配合,其中一个短拨杆位于A相手柄与B相塑壳断路器的B相手柄之间,且构成该短拨杆与A相手柄、B相手柄的联动配合,另外一个短拨杆位于B相手柄与C相手柄之间,且构成该短拨杆与B相手柄、C相手柄的联动配合。本发明具有结构简单、性能安全可靠、换相切换迅速、防误操作的优点。(The invention relates to a phase-change switch with mechanical interlock, which comprises a shell, an A-phase molded case circuit breaker, a B-phase molded case circuit breaker, a C-phase molded case circuit breaker and a switching mechanism, the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are arranged in the shell side by side, the switching mechanism comprises a supporting plate, a long deflector rod and two short deflector rods, two ends of the long deflector rod extend towards the A-phase handle of the A-phase molded case circuit breaker and the C-phase handle of the C-phase molded case circuit breaker respectively, and the A-phase handle, the C-phase handle and the long deflector rods are in linkage fit, one short deflector rod is positioned between the A-phase handle and the B-phase handle of the B-phase molded case circuit breaker and forms linkage fit of the short deflector rod, the A-phase handle and the B-phase handle, the other short deflector rod is positioned between the B-phase handle and the C-phase handle and forms linkage fit of the short deflector rod, the B-phase handle and the C-phase handle. The invention has the advantages of simple structure, safe and reliable performance, rapid phase change switching and misoperation prevention.)

1. The utility model provides a take commutation switch of mechanical interlocking which characterized in that: the phase change switch comprises a shell, an A-phase molded case circuit breaker, a B-phase molded case circuit breaker, a C-phase molded case circuit breaker and a switching mechanism, wherein the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are arranged in the shell side by side, the switching mechanism comprises a support plate arranged on the shell, a long deflector rod rotatably arranged on the support plate and two short deflector rods rotatably arranged on the support plate, the two ends of the long deflector rod respectively extend towards an A-phase handle of the A-phase molded case circuit breaker and a C-phase handle of the C-phase molded case circuit breaker and form linkage fit of the A-phase handle, the C-phase handle and the long deflector rod, one short deflector rod is positioned between the A-phase handle and the B-phase handle of the B-phase molded case circuit breaker and form linkage fit of the short deflector rod with the A-phase handle and the B-phase handle, and the other short deflector, and the short deflector rod is in linkage fit with the B-phase handle and the C-phase handle.

2. The commutation switch with mechanical interlock of claim 1, wherein: the long deflector rod is in an arc-shaped plate shape, the middle of the long deflector rod is riveted on the supporting plate to form the rotating connection and matching of the long deflector rod and the supporting plate, and two ends of the long deflector rod are respectively provided with a driving part which is abutted against the A-phase handle and the C-phase handle.

3. The commutation switch with mechanical interlock of claim 2, wherein: the driving part is wrapped with a rubber sleeve.

4. The commutation switch with mechanical interlock of claim 2, wherein: and the long deflector rod is provided with a reinforcing convex rib.

5. The commutation switch with mechanical interlock according to claim 1 or 2, wherein: the middle parts of the two short driving levers are respectively riveted on the supporting plate, the two short driving levers are in rotating connection and matching with the supporting plate, arc driving parts which are abutted to the A-phase handle, the B-phase handle and the C-phase handle are respectively arranged at the two ends of the short driving levers, and rubber protective sleeves wrap the arc contact parts.

6. The commutation switch with mechanical interlock according to claim 1 or 2, wherein: the casing include the base, set up the lid on the base, the backup pad set up on the lid, lid and base between be formed with the holding chamber that is used for placing A looks moulded case circuit breaker, B looks moulded case circuit breaker, C looks moulded case circuit breaker, lid, backup pad on be provided with the handle hole that can supply A looks handle, B looks handle, C looks handle to pass respectively.

Technical Field

The invention relates to a phase change switch, in particular to a phase change switch with a mechanical interlock.

Background

In the daily operation management of power distribution networks, both line loss and power quality are one of the most concerned problems for the power sector and consumers today. In production and domestic power consumption, a large number of single-phase, asymmetric, nonlinear and impact loads exist, so that three phases of a power distribution system are unbalanced, the performances and service lives of equipment and facilities such as a distribution transformer and a transformer area line are seriously affected, and even the transformer is burnt. The structural design of the existing phase change switch is unreasonable, when manual phase change operation is carried out, the phase change switching speed is low, misoperation is easy, and safety accidents are easy to cause, so that the phase change switch cannot adjust the three-phase balance of the power distribution network, the power supply quality of the power distribution network is poor, and the power supply reliability is low.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a phase change switch with mechanical interlock, which has the advantages of simple structure, safe and reliable performance, quick phase change switching and misoperation prevention.

In order to achieve the purpose, the phase change switch with mechanical interlock comprises a shell, an A-phase plastic shell circuit breaker, a B-phase plastic shell circuit breaker, a C-phase plastic shell circuit breaker and a switching mechanism, wherein the A-phase plastic shell circuit breaker, the B-phase plastic shell circuit breaker and the C-phase plastic shell circuit breaker are arranged in the shell side by side, the switching mechanism comprises a supporting plate arranged on the shell, a long deflector rod rotatably arranged on the supporting plate corresponding to one side of the B-phase plastic shell circuit breaker, and two short deflector rods rotatably arranged on the supporting plate, two ends of each long deflector rod respectively extend towards the A-phase handle of the A-phase plastic shell circuit breaker and the C-phase handle of the C-phase plastic shell circuit breaker, and form linkage matching of the A-phase handle, the C-phase handle and the long deflector rod, one short deflector rod is positioned between the A-phase handle and the B-phase handle of the B-, The other short deflector rod is positioned between the B-phase handle and the C-phase handle and forms linkage fit of the short deflector rod, the B-phase handle and the C-phase handle.

The beneficial effect of above-mentioned structure is: the phase change switch is provided with a switching mechanism which is connected with the phase change switch through a long driving lever and two short driving levers

The mutual interlocking among the A-phase handle, the B-phase handle and the C-phase handle can be realized, the quick switching among the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker can be realized, the fault hazard caused by three-phase imbalance of a power distribution system can be effectively reduced, and the improvement of the power supply quality and the power supply reliability of a power distribution network is facilitated. When the phase-change switch is operated, the A-phase handle is toggled to be switched on, the A-phase handle can drive the long driving rod and the short driving rod to act, the B-phase handle and the C-phase handle can be kept at the brake separating position through the long driving rod and the short driving rod, the interlocking of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker is realized, misoperation can be effectively avoided, the phase-change switch is simple in structural design, high in switching speed, the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are identical in structure, short-circuit protection, overload protection and isolation functions are all provided, and the phase-change switch has the advantages of being simple in.

Particularly, the long deflector rod is in an arc-shaped plate shape, the middle part of the long deflector rod is riveted on the supporting plate, the long deflector rod is in rotating connection and matching with the supporting plate, and driving parts which are abutted to the A-phase handle and the C-phase handle are respectively arranged at two ends of the long deflector rod. The long driving rod is riveted on the supporting plate, so that the long driving rod and the supporting piece can be conveniently assembled, the driving parts at two ends of the long driving rod can reliably drive the A-phase handle and the C-phase handle to act, the linkage matching of the A-phase handle and the C-phase handle is realized, and the working reliability of the switching mechanism is improved.

Particularly, the driving part is wrapped with a rubber sleeve. The rubber sleeve can play a role in protecting the A-phase handle and the C-phase handle, impact of the long deflector rod on the A-phase handle and the C-phase handle can be relieved, and working reliability of the switching mechanism is improved.

In particular, the long deflector rod is provided with a reinforcing convex rib. The reinforced convex ribs can enhance the strength of the long deflector rod and improve the working reliability of the switching mechanism.

Particularly, the middle parts of the two short driving levers are respectively riveted on the supporting plate, the two short driving levers are in rotating connection and matching with the supporting plate, arc-shaped driving parts which are abutted to the A-phase handle, the B-phase handle and the C-phase handle are respectively arranged at the two ends of the short driving levers, and rubber protective sleeves wrap the arc-shaped contact parts. The arc-shaped driving portion is arranged on the short driving lever, reliable switching among the A-phase handle, the B-phase handle and the C-phase handle can be guaranteed, the working reliability of the switching mechanism is improved, the impact of the short handle on the A-phase handle, the B-phase handle and the C-phase handle is relieved by the rubber protective sleeve, and the working reliability of the switching mechanism is improved.

Particularly, the casing include the base, set up the lid on the base, the backup pad set up on the lid, lid and base between be formed with the holding chamber that is used for placing A looks moulded case circuit breaker, B looks moulded case circuit breaker, C looks moulded case circuit breaker, lid, backup pad on be provided with respectively and supply the handle hole that A looks handle, B looks handle, C looks handle passed. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are arranged in the accommodating cavity, so that the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are convenient to assemble with the shell, and the assembly efficiency of the phase change switch is improved.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a perspective view of a switching mechanism according to an embodiment of the present invention.

Fig. 4 is a perspective view of the long deflector rod according to the embodiment of the invention.

Detailed Description

As shown in fig. 1 to 4, an embodiment of the invention is a phase change switch with a mechanical interlock, including a casing 10, an a-phase molded case circuit breaker 11, a B-phase molded case circuit breaker 12, a C-phase molded case circuit breaker 13, and a switching mechanism 20, where the a-phase molded case circuit breaker 11, the B-phase molded case circuit breaker 12, and the C-phase molded case circuit breaker 13 are arranged in the casing 10 side by side, and wiring holes 101 are respectively provided on the casing 10 corresponding to wiring boards at two ends of the a-phase molded case circuit breaker 11, the B-phase molded case circuit breaker 12, and the C-phase molded case circuit breaker 13. Therefore, the phase change switch is small in size and convenient and fast to wire. The switching mechanism 20 includes a support plate 21 disposed on the housing 10, a long shift lever 22 rotatably disposed on the support plate 21 at a side corresponding to the B-phase molded case circuit breaker 13, and two short shift levers 23 rotatably disposed on the support plate 21, wherein two ends of the long shift lever 22 extend toward the a-phase handle 111 of the a-phase molded case circuit breaker 11 and the C-phase handle 131 of the C-phase molded case circuit breaker 13, respectively, and form a linkage fit between the a-phase handle 111 and the C-phase handle 131 and the long shift lever 22, one of the short shift levers 23 is disposed between the a-phase handle 111 and the B-phase handle 12 of the B-phase molded case circuit breaker 12, and form a linkage fit between the short shift lever 23 and the a-phase handle 111 and the B-phase handle 121, and the other short shift lever 23 is disposed between the B-phase handle 121 and the C-phase handle 131, and form a linkage fit between the short shift lever 23 and the B.

As shown in fig. 3 and 4, the long shift lever 22 is in an arc plate shape, the middle of the long shift lever 22 is riveted on the support plate 21, the long shift lever 22 is connected and matched with the support plate 21 in a rotating manner, and the two ends of the long shift lever 22 are respectively provided with a driving portion 221 which is abutted against the a-phase handle 111 and the C-phase handle 131. The long driving rod is riveted on the supporting plate, so that the long driving rod and the supporting piece can be conveniently assembled, the driving parts at two ends of the long driving rod can reliably drive the A-phase handle and the C-phase handle to act, the linkage matching of the A-phase handle and the C-phase handle is realized, and the working reliability of the switching mechanism is improved. The driving part 221 is wrapped with a rubber sleeve 222. The rubber sleeve can play a role in protecting the A-phase handle and the C-phase handle, impact of the long deflector rod on the A-phase handle and the C-phase handle can be relieved, and working reliability of the switching mechanism is improved. The long shift lever 22 is provided with a reinforcing convex rib 223. The reinforced convex ribs can enhance the strength of the long deflector rod and improve the working reliability of the switching mechanism. The middle parts of the two short shift levers 23 are respectively riveted on the support plate 21, the two short shift levers 23 are in rotating connection and matching with the support plate 21, arc-shaped driving parts 231 which are abutted against the A-phase handle 111, the B-phase handle 121 and the C-phase handle 131 are respectively arranged at the two ends of the short shift levers 23, and rubber protective sleeves 232 are wrapped on the arc-shaped driving parts 231. The arc-shaped driving portion is arranged on the short driving lever, reliable switching among the A-phase handle, the B-phase handle and the C-phase handle can be guaranteed, the working reliability of the switching mechanism is improved, the impact of the short handle on the A-phase handle, the B-phase handle and the C-phase handle is relieved by the rubber protective sleeve, and the working reliability of the switching mechanism is improved.

As shown in fig. 2, the casing 10 includes a base 102 and a cover 103 disposed on the base 102, the support plate 21 is disposed on the cover 103, an accommodating cavity 100 for accommodating an a-phase molded case circuit breaker 11, a B-phase molded case circuit breaker 12 and a C-phase molded case circuit breaker 13 is formed between the cover 103 and the base 102, and handle holes 104 for allowing an a-phase handle 111, a B-phase handle 121 and a C-phase handle 131 to pass through are respectively disposed on the cover 103 and the support plate 21. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are arranged in the accommodating cavity, so that the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are convenient to assemble with the shell, and the assembly efficiency of the phase change switch is improved.

The phase change switch is provided with the switching mechanism, the switching mechanism can realize mutual interlocking among the A-phase handle, the B-phase handle and the C-phase handle, realize quick switching of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker, effectively reduce fault damage caused by three-phase unbalance of a power distribution system, and is favorable for improving the power supply quality and the power supply reliability of a power distribution network. When the phase-change switch is operated, the A-phase handle is toggled to be switched on, the A-phase handle can drive the long driving rod and the short driving rod to act, the B-phase handle and the C-phase handle can be kept at the brake separating position through the long driving rod and the short driving rod, the interlocking of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker is realized, misoperation can be effectively avoided, the phase-change switch is simple in structural design, high in switching speed, the A-phase molded case circuit breaker, the B-phase molded case circuit breaker and the C-phase molded case circuit breaker are identical in structure, short-circuit protection, overload protection and isolation functions are all provided, and the phase-change switch has the advantages of being simple in.