A phase-changing switch with mechanical interlock

Abstract

The present invention relates to a phase-changing switch with mechanical interlocking, comprising a housing, 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 side by side in the housing, and the switching mechanism comprises a support plate, a long lever, and two short levers, wherein the two ends of the long lever extend toward 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 constitute the linkage cooperation between the A-phase handle, the C-phase handle and the long lever, wherein one short lever is located between the A-phase handle and the B-phase handle of the B-phase molded case circuit breaker, and constitutes the linkage cooperation between the short lever and the A-phase handle and the B-phase handle, and the other short lever is located between the B-phase handle and the C-phase handle, and constitutes the linkage cooperation between the short lever and the B-phase handle and the C-phase handle. The present invention has the advantages of simple structure, safe and reliable performance, rapid phase-changing switching, and anti-misoperation.

Description

Technical Field

[0001] The invention relates to a phase-changing switch, in particular to a phase-changing switch with mechanical interlocking. Background Art

[0002] In the daily operation and management of the distribution network, line loss and power quality are among the most concerned issues for today's power departments and users. In production and daily electricity use, there are often a large number of single-phase, asymmetric, nonlinear, and impact loads, which make the three-phase imbalance of the distribution system, and seriously affect the performance and service life of equipment and facilities such as distribution transformers and substation lines, and even cause transformers to burn out. At present, the structural design of some phase-changing switches is unreasonable. During manual phase-changing operations, the phase-changing switching speed is slow and easy to misoperate, which can easily cause safety accidents. As a result, the phase-changing switch cannot adjust the three-phase balance of the distribution network, resulting in poor power supply quality and low power supply reliability of the distribution network. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a phase-changing switch with mechanical interlocking which has simple structure, safe and reliable performance, rapid phase-changing switching and prevents misoperation.

[0004] To achieve the above-mentioned purpose, the present invention adopts a phase-changing switch with mechanical interlocking, including 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 side by side in the shell. The switching mechanism includes a support plate arranged on the shell, a long lever rotatably arranged on the support plate at a side corresponding to the B-phase molded case circuit breaker, and two short levers rotatably arranged on the support plate. The two ends of the long lever extend toward 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 constitute the linkage cooperation between the A-phase handle, the C-phase handle and the long lever, one of the short levers is located between the A-phase handle and the B-phase handle of the B-phase molded case circuit breaker, and constitutes the linkage cooperation between the short lever and the A-phase handle and the B-phase handle, and the other short lever is located between the B-phase handle and the C-phase handle, and constitutes the linkage cooperation between the short lever and the B-phase handle and the C-phase handle.

[0005] The beneficial effect of the above structure is that a switching mechanism is provided on the phase-changing switch, and the switching mechanism can realize the mutual interlocking between the A-phase handle, the B-phase handle, and the C-phase handle through a long lever and two short levers, thereby realizing the rapid switching of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker, which can effectively reduce the fault hazards caused by the three-phase imbalance of the distribution system, and is beneficial to improving the power supply quality and power supply reliability of the distribution network. During operation, the A-phase handle is turned to close the circuit breaker, and the A-phase handle can drive the long lever and the short lever to move. The long lever and the short lever can keep the B-phase handle and the C-phase handle in the open position, thereby realizing 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, and can effectively avoid misoperation. The switching mechanism has a simple structural design and a fast switching speed. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker have the same structure and all have short-circuit protection, overload protection, and isolation functions. Therefore, the phase-changing switch has the advantages of simple structure, safe and reliable performance, fast phase switching, and anti-misoperation.

[0006] In particular, the long lever is in the shape of an arc-shaped plate, the middle part of the long lever is riveted on the support plate, and the long lever and the support plate are connected and matched in rotation, and the two ends of the long lever are respectively provided with driving parts that conflict with the A-phase handle and the C-phase handle. The long lever is riveted on the support plate, which is convenient for assembling the long lever and the support member. The driving parts on the two ends of the long lever can reliably drive the A-phase handle and the C-phase handle to move, realize the linkage and matching of the A-phase handle and the C-phase handle, and improve the reliability of the switching mechanism.

[0007] In particular, the driving part of the long lever is wrapped with a rubber sleeve, which can protect the A-phase handle and the C-phase handle, reduce the impact of the long lever on the A-phase handle and the C-phase handle, and improve the reliability of the switching mechanism.

[0008] In particular, the long lever is provided with reinforcing ribs, which can enhance the strength of the long lever and improve the reliability of the switching mechanism.

[0009] In particular, the middle parts of the two short levers are riveted to the support plate respectively, and the two short levers are connected to the support plate in a rotational manner, and arc-shaped driving parts that conflict with the A-phase handle, the B-phase handle, and the C-phase handle are respectively provided at both ends of the short lever, and the arc-shaped driving parts are wrapped with rubber protective sleeves. The arc-shaped driving parts are provided on the short levers to ensure reliable switching between the A-phase handle, the B-phase handle, and the C-phase handle, thereby improving the reliability of the switching mechanism, and the rubber protective sleeves will reduce the impact of the short handles on the A-phase handle, the B-phase handle, and the C-phase handle, thereby improving the reliability of the switching mechanism.

[0010] In particular, the housing includes a base, a cover body arranged on the base, the support plate is arranged on the cover body, a receiving cavity for placing the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker is formed between the cover body and the base, and handle holes for the A-phase handle, the B-phase handle, and the C-phase handle are respectively arranged on the cover body and the support plate. 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 receiving cavity, which facilitates the assembly of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker with the housing, thereby improving the assembly efficiency of the phase-changing switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of an embodiment of the present invention.

[0012] Figure 2 This is an exploded view of an embodiment of the present invention.

[0013] Figure 3 It is a three-dimensional diagram of the switching mechanism according to an embodiment of the present invention.

[0014] Figure 4 It is a three-dimensional diagram of a long lever according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] like Figures 1 to 4 As shown, the embodiment of the present invention is a phase-changing switch with mechanical interlocking, comprising a housing 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. 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 side by side in the housing 10, and the housing 10 is provided with wiring holes 101 at the wiring boards at both ends corresponding to 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-changing switch is small in size and more convenient to connect. The switching mechanism 20 includes a support plate 21 arranged on the housing 10, a long lever 22 rotatably arranged on the support plate 21 at one side corresponding to the B-phase molded case circuit breaker 13, and two short levers 23 rotatably arranged on the support plate 21. The two ends of the long 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 constitute the linkage cooperation between the A-phase handle 111, the C-phase handle 131 and the long lever 22. One of the short levers 23 is located between the A-phase handle 111 and the B-phase handle 12 of the B-phase molded case circuit breaker 12, and constitutes the linkage cooperation between the short lever 23 and the A-phase handle 111 and the B-phase handle 121. The other short lever 23 is located between the B-phase handle 121 and the C-phase handle 131, and constitutes the linkage cooperation between the short lever 23 and the B-phase handle 121 and the C-phase handle 131.

[0016] like Figure 3and 4 As shown, the long lever 22 is in the shape of an arc plate, the middle part of the long lever 22 is riveted on the support plate 21, and the long lever 22 and the support plate 21 are connected and matched, and the two ends of the long lever 22 are respectively provided with driving parts 221 that conflict with the A-phase handle 111 and the C-phase handle 131. The long lever is riveted on the support plate, which is convenient for the assembly of the long lever and the support member. The driving parts on the two ends of the long lever can reliably drive the A-phase handle and the C-phase handle to move, realize the linkage and matching of the A-phase handle and the C-phase handle, and improve the reliability of the switching mechanism. The driving part 221 is wrapped with a rubber sleeve 222. The rubber sleeve can protect the A-phase handle and the C-phase handle, reduce the impact of the long lever on the A-phase handle and the C-phase handle, and improve the reliability of the switching mechanism. The long lever 22 is provided with a reinforcing rib 223. The reinforcing rib can enhance the strength of the long lever and improve the reliability of the switching mechanism. The middle parts of the two short levers 23 are riveted to the support plate 21 respectively, and the two short levers 23 are connected and matched with the support plate 21 in rotation, and arc-shaped driving parts 231 that conflict with the A-phase handle 111, the B-phase handle 121, and the C-phase handle 131 are respectively provided at both ends of the short lever 23, and the arc-shaped driving parts 231 are wrapped with rubber protective sleeves 232. The arc-shaped driving parts are provided on the short levers, which can ensure that the A-phase handle, the B-phase handle, and the C-phase handle can be switched reliably, thereby improving the reliability of the switching mechanism, and the rubber protective sleeves will reduce the impact of the short handles on the A-phase handles, the B-phase handles, and the C-phase handles, which is conducive to improving the reliability of the switching mechanism.

[0017] like Figure 2 As shown, the housing 10 includes a base 102, a cover 103 disposed on the base 102, the support plate 21 is disposed on the cover 103, and a receiving cavity 100 for placing 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 is formed between the cover 103 and the base 102. The cover 103 and the support plate 21 are respectively provided with handle holes 104 for the A-phase handle 111, the B-phase handle 121, and the C-phase handle 131 to pass through. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker are disposed in the receiving cavity, which facilitates the assembly of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker with the housing, thereby improving the assembly efficiency of the phase-changing switch.

[0018] The phase-changing switch is provided with a switching mechanism, which can realize the mutual interlocking between the A-phase handle, the B-phase handle, and the C-phase handle, and realize the rapid switching of the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker, which can effectively reduce the fault hazards caused by the three-phase imbalance of the distribution system, and is conducive to improving the power supply quality and power supply reliability of the distribution network. During operation, the A-phase handle is turned to close the switch, and the A-phase handle can drive the long lever and the short lever to move. The long lever and the short lever can keep the B-phase handle and the C-phase handle in the open position, thereby realizing 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, and can effectively avoid misoperation. The switching mechanism has a simple structural design and a fast switching speed. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker have the same structure and are equipped with short-circuit protection, overload protection, and isolation functions. Therefore, the phase-changing switch has the advantages of simple structure, safe and reliable performance, rapid phase switching, and anti-misoperation.

Claims

1. A phase-changing switch with mechanical interlock, characterized in that: The phase-changing 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. The A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker are arranged side by side in the shell. The switching mechanism comprises a support plate arranged on the shell, a long lever rotatably arranged on the support plate at one side corresponding to the B-phase molded case circuit breaker, and two short levers rotatably arranged on the support plate. The two ends of the long lever extend toward 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 constitute the linkage cooperation between the A-phase handle, the C-phase handle and the long lever. One of the short levers is located between the A-phase handle and the B-phase handle of the B-phase molded case circuit breaker, and constitutes the short lever. The rod is linked with the A-phase handle and the B-phase handle, and another short lever is located between the B-phase handle and the C-phase handle, and constitutes the linkage cooperation of the short lever with the B-phase handle and the C-phase handle; the long lever is in the shape of an arc-shaped plate, the middle part of the long lever is riveted on the support plate, and constitutes a rotational connection and cooperation between the long lever and the support plate, and the two ends of the long lever are respectively provided with driving parts that conflict with the A-phase handle and the C-phase handle; the middle parts of the two short levers are respectively riveted on the support plate, and constitute a rotational connection and cooperation between the two short levers and the support plate, and the two ends of the short lever are respectively provided with arc-shaped driving parts that conflict with the A-phase handle, the B-phase handle and the C-phase handle, and the arc-shaped driving parts are wrapped with rubber protective covers.

2. The phase-changing switch with mechanical interlock according to claim 1, characterized in that: The driving part of the long lever is wrapped with a rubber sleeve.

3. The phase-changing switch with mechanical interlock according to claim 1 or 2, characterized in that: The long lever is provided with reinforcing ribs.

4. The phase-changing switch with mechanical interlock according to claim 1 or 2, characterized in that: The shell includes a base and a cover body arranged on the base, the support plate is arranged on the cover body, and a receiving cavity for placing the A-phase molded case circuit breaker, the B-phase molded case circuit breaker, and the C-phase molded case circuit breaker is formed between the cover body and the base. The cover body and the support plate are respectively provided with handle holes for the A-phase handle, the B-phase handle, and the C-phase handle to pass through.

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