Linkage type control mechanism applied to primary and secondary deep fusion circuit breaker

Abstract

The utility model relates to the technical field of circuit breaker control, in particular to a linkage type control mechanism applied to a primary and secondary deep fusion circuit breaker, which comprises a circuit breaker body. The circuit breaker body comprises a transverse circuit breaker box body, a first pole fixed at the upper end of the transverse circuit breaker box body, a control box body fixed at the front end of the transverse circuit breaker box body, and a second pole fixed on the inclined surface of the upper end of the control box body. According to the linkage type control mechanism applied to the primary and secondary deep fusion circuit breaker, the gap between the isolation disconnecting link and the control box body can be changed according to needs by adopting a gap adjustable structural design, so that the linkage type control mechanism is more diverse in application range, convenient to assemble and high in structural stability; the tension sensor is installed at the connecting end of the reset spring and the inner side wall of the control box body, tension of the reset spring at different positions can be monitored in real time, and therefore the control position of the isolation switch can be found in time.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker control, in particular to a linkage control mechanism applied to a primary-secondary deep fusion circuit breaker. Background Art

[0002] The primary and secondary fusion circuit breaker is a protection device composed of primary protection, secondary protection, fuses and electrical operating mechanisms. The primary and secondary fusion circuit breaker can realize the primary and secondary protection of the circuit at the same time, and can be flexibly set according to needs. Its main working principle is that when a circuit fault is found, the primary protection uses a protection relay to detect the fault signal, and cuts off the disconnector, grounding switch and other equipment through the electrical operating mechanism. For the secondary protection, it will be protected by various methods such as automatic protection, power failure protection, circuit breaker thermal protection, circuit breaker overload protection and short circuit protection.

[0003] In order to improve safety, the current primary and secondary fusion circuit breakers mostly use lateral control rods to control all isolation switches. However, because they mostly adopt a fixed structure design, the protruding position is very fixed, resulting in relatively single applicability. Different installation positions require different connection handles, which is very costly. In addition, there is no special monitoring mechanism on the internal elastic reset mechanism, resulting in the inability to judge the elastic reset ability without controlling the isolation switch during later inspection and maintenance. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the current primary and secondary fusion circuit breakers mostly use lateral control rods to control all the isolating switches, but because they mostly adopt a fixed structure design, the protruding position is very fixed, resulting in a relatively single applicability. Different installation positions require different connecting handles, which is very costly, and no special monitoring mechanism is set on the internal elastic reset mechanism, resulting in the inability to judge the elastic reset ability without controlling the isolating switch during later inspection and maintenance.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a linkage control mechanism applied to a primary-secondary deep fusion circuit breaker, comprising a circuit breaker body, wherein the circuit breaker body comprises a horizontally placed circuit breaker box, a first pole fixed at the upper end of the horizontally placed circuit breaker box, a control box fixed at the front end of the horizontally placed circuit breaker box and a second pole fixed at the upper inclined surface of the control box, an upper incoming wiring terminal is fixedly mounted on the upper end of the first pole, a lower outgoing wiring terminal is fixedly mounted on the upper end of the second pole, an isolating knife switch for connecting the lower outgoing wiring terminal is movably mounted on the side wall of the first pole, a horizontally placed control link for controlling the isolating knife switch to cooperate is movably mounted inside the control box, and a retractable isolating switch opening and closing handle is mounted on the outer end of the horizontally placed control link.

[0006] A lateral connecting terminal for installing an isolating knife switch is fixedly mounted on the side wall of the first pole.

[0007] The isolating knife switch comprises a flip knife body movably mounted on a lateral connection terminal through a lateral assembly shaft at one side and a central control column connected to the flip knife body at the top end.

[0008] The transverse control link includes a transverse adjustment rod transversely assembled in the control box, an external assembly sleeve axially fixed to the outside of the transverse adjustment rod, a first control link and a second control link fixed to the side wall of the external assembly sleeve, and the first control link is movably connected to the bottom of the central control column through an axis.

[0009] The second control link is elastically connected to the inner wall of the control box body via a return spring, and a tension sensor is installed at the connecting end of the return spring and the inner wall of the control box body.

[0010] The telescopic disconnecting switch opening and closing handle comprises an external assembly sleeve axially sleeved on a transverse adjusting rod, a transverse control handle fixed on the outer side of the external assembly sleeve, control pull rings connected to both sides of the transverse control handle, and a locking bolt passing through the external assembly sleeve and the transverse adjusting rod.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model adopts a linkage control mechanism for a primary and secondary deep fusion circuit breaker, which can change the gap between the isolation switch and the control box as needed by adopting a spacing-adjustable structural design, making its application range more diverse, and easy to assemble and highly stable in structure;

[0013] (2) By installing a tension sensor at the connection end between the reset spring and the inner wall of the control box, the tension of the reset spring at different positions can be monitored in real time, so that the control position of the isolation switch can be discovered in time;

[0014] (3) The status of the isolation switch can be monitored without disassembling the control box and the control isolation switch, which can reduce the difficulty and cost of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a side view of the utility model.

[0018] Figure 3It is a partial internal schematic diagram of the external assembly shaft sleeve and the assembly end of the transverse adjustment rod in the utility model. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Figure 1 , Figure 2 and Figure 3 A linkage control mechanism applied to a primary-secondary deep fusion circuit breaker shown in the figure comprises a circuit breaker body, wherein the circuit breaker body comprises a horizontal circuit breaker box 1, a first pole 2 fixed to the upper end of the horizontal circuit breaker box 1, a control box 3 fixed to the front end of the horizontal circuit breaker box 1 and a second pole 4 fixed to the upper inclined surface of the control box 3, an upper incoming line terminal 5 is fixedly installed on the upper end of the first pole 2, a lower outgoing line terminal 6 is fixedly installed on the upper end of the second pole 4, an isolating knife switch 7 for connecting the lower outgoing line terminal 6 is movably mounted on the side wall of the first pole 2, a horizontal control connecting rod 8 for controlling the isolating knife switch 7 is movably mounted inside the control box 3, and a retractable isolating switch opening and closing handle 9 is mounted on the outer end of the horizontal control connecting rod 8.

[0022] In order to cooperate with the lateral assembly, a lateral connecting terminal 10 for mounting the isolating knife switch 7 is fixedly mounted on the side wall of the first pole 2 .

[0023] In order to cooperate with the connection control, the isolation knife switch 7 includes a flip knife body 71 movably mounted on the lateral connection terminal 10 through a lateral assembly shaft on one side and a central control column 72 connected to the flip knife body 71 at the top.

[0024] In order to cooperate with the synchronous control, the transverse control link 8 includes a transverse adjustment rod 81 transversely assembled in the control box 3, an external assembly sleeve 82 axially fixed on the outside of the transverse adjustment rod 81, a first control link 83 and a second control link 84 fixed on the side wall of the external assembly sleeve 82, and the first control link 83 is movably connected to the bottom of the central control column 72 through an axis.

[0025] A lateral positioning blind hole is provided on the outer side of the transverse adjustment rod 81 at the connection end of the external assembly sleeve 82. The external assembly sleeve 82 is fixedly assembled by screwing the positioning bolts on the side wall into the lateral positioning blind hole.

[0026] In order to monitor the tension of the return spring 85 in real time, the second control link 84 is elastically connected to the inner wall of the control box 3 via the return spring 85 , and a tension sensor 86 is installed at the connection end between the return spring 85 and the inner wall of the control box 3 .

[0027] When the tension sensor 86 can monitor the tension of the connection end of the reset spring 85 in real time, the elastic reset ability of the isolation knife switch 7 can be judged by the tension size, and the force of the reset spring 85 is guaranteed by the elastic reset force size, so as to ensure that the force of the second control link 84 at all positions is consistent, and the force on the external assembly set 82 is consistent, thereby ensuring the control efficiency of the isolation knife switch 7 at different positions is consistent. Once the force difference is relatively large, an alarm will be given in time, so that people can understand the fault location in time, which is convenient for later maintenance and replacement.

[0028] In order to cooperate with lateral control and gap adjustment, the telescopic disconnector handle 9 includes an external assembly sleeve 91 axially sleeved on the transverse adjustment rod 81, a transverse control handle 92 fixed on the outer side of the external assembly sleeve 91, a control pull ring 93 connected to both sides of the transverse control handle 92, and a locking bolt 94 passing through the external assembly sleeve 91 and the transverse adjustment rod 81.

[0029] The external assembly sleeve 91 is sleeved on the outside of the transverse adjustment rod 81, and a strip-shaped assembly through hole is opened inside the transverse adjustment rod 81. Lateral locking grooves are opened on the upper and lower openings of the strip-shaped assembly through hole. Then the locking bolt 94 passes through the strip-shaped assembly through hole to fix the transverse adjustment rod 81 and the external assembly sleeve 91. A lateral extrusion port connected to the strip-shaped assembly through hole is opened on the outside of the external assembly sleeve 91, and a lateral locking block matching the lateral locking groove is elastically installed inside the lateral extrusion port. When the locking bolt 94 squeezes the lateral locking block inward, the lateral locking block is inserted into the lateral locking groove to laterally fix the external assembly sleeve 91.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A linkage control mechanism applied to a primary and secondary deep fusion circuit breaker, comprising a circuit breaker body, characterized in that: The circuit breaker body comprises a horizontal circuit breaker box (1), a first pole (2) fixed at the upper end of the horizontal circuit breaker box (1), a control box (3) fixed at the front end of the horizontal circuit breaker box (1), and a second pole (4) fixed at the upper inclined surface of the control box (3), an upper incoming wiring terminal (5) is fixedly mounted on the upper end of the first pole (2), a lower outgoing wiring terminal (6) is fixedly mounted on the upper end of the second pole (4), an isolating knife switch (7) for connecting the lower outgoing wiring terminal (6) is movably mounted on the side wall of the first pole (2), a horizontal control connecting rod (8) for controlling the isolating knife switch (7) is movably mounted inside the control box (3), and a retractable isolating switch opening and closing handle (9) is mounted on the outer end of the horizontal control connecting rod (8).

2. According to claim 1, a linkage control mechanism applied to a primary and secondary deep fusion circuit breaker is characterized by: A lateral connection terminal (10) for installing an isolating knife switch (7) is fixedly mounted on the side wall of the first pole (2).

3. The linkage control mechanism applied to the primary and secondary deep fusion circuit breaker according to claim 2 is characterized in that: The isolating knife switch (7) comprises a flip knife body (71) movably mounted on a lateral connection terminal via a lateral assembly shaft at one side, and a central control column (72) connected to the flip knife body (71) at the top end.

4. The linkage control mechanism applied to a primary and secondary deep fusion circuit breaker according to claim 3 is characterized in that: The transverse control link (8) comprises a transverse adjustment rod (81) transversely mounted in the control box (3), an external assembly sleeve (82) axially fixed to the outside of the transverse adjustment rod (81), a first control link (83) and a second control link (84) fixed to the side wall of the external assembly sleeve (82), wherein the first control link (83) is movably connected to the bottom of the central control column (72) via a shaft.

5. The linkage control mechanism applied to the primary and secondary deep fusion circuit breaker according to claim 4 is characterized in that: The second control link (84) is elastically connected to the inner wall of the control box body (3) via a return spring (85), and a tension sensor (86) is installed at the connection end between the return spring (85) and the inner wall of the control box body (3).

6. The linkage control mechanism for a primary-secondary deep fusion circuit breaker according to claim 4 is characterized in that: The telescopic disconnector opening and closing handle (9) comprises an external assembly sleeve (91) axially sleeved on a transverse adjustment rod (81), a transverse control handle (92) fixed on the outer side of the external assembly sleeve (91), control pull rings (93) connected to both sides of the transverse control handle (92), and a locking bolt (94) penetrating the external assembly sleeve (91) and the transverse adjustment rod (81).

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