Recloser with positioning structure and circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, and particularly discloses a recloser with a positioning structure and a circuit breaker. The recloser comprises a shell, an operating mechanism and a positioning mechanism. The operating mechanism achieves opening and closing control through left-right movement of the cross rod, the positioning mechanism is composed of a main body, an adjusting rod and a connecting plate, the main body is provided with a transverse groove and an inclined groove, and first protruding shafts at the two ends of the cross rod are embedded into the transverse groove and the inclined groove. The adjusting rod adjusts the relative position of the cross rod through up-and-down movement, and precise calibration of the working state is achieved. And the chute design can prevent the vacuum tube in the pole from being damaged due to false closing after the cross rod is dislocated. The cumbersome debugging steps of a traditional recloser are simplified through a pre-debugging mechanism, the opening stability is ensured through the friction force between the chute and the convex shaft, and manual and automatic dual-mode operation is supported. The positioning structure and the anti-misoperation design of the recloser and the circuit breaker remarkably improve the action reliability and the maintenance efficiency of the recloser and the circuit breaker, and are suitable for efficient operation and maintenance of a power system.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a recloser and a circuit breaker with a positioning structure. Background Art

[0002] In the opening and closing operations of traditional reclosers and circuit breakers, it is necessary to adjust the opening distance and synchronism through the adjusting screw multiple times, which has the problems of long debugging time and easy error. In addition, when the existing equipment is accidentally dislocated, the cross bar may be directly reset without calibration, resulting in damage to the vacuum tube in the pole column due to impact. Some reclosers lack a reliable anti-misoperation mechanism, and abnormal power or manual misoperation is likely to cause unexpected actions, affecting the system stability. To solve the above problems, there is an urgent need for a recloser structure integrating precise positioning, pre-commissioning function and anti-misoperation design to simplify the debugging process, improve the durability of the equipment, and ensure the reliability of the opening and closing actions. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] To solve the above problems, the present invention proposes a recloser and a circuit breaker with a positioning structure, aiming to solve the problem that some reclosers in the prior art lack a reliable anti-misoperation mechanism, and abnormal power or manual misoperation is likely to cause unexpected actions, affecting the system stability.

[0005] (2) Technical Solutions

[0006] A recloser with a positioning structure of the present invention, the recloser with the positioning structure includes:

[0007] A recloser housing, the top of the recloser housing is provided with a plurality of pole columns;

[0008] An operating mechanism, arranged inside the recloser housing, the operating mechanism includes a cross bar that can move left and right inside the recloser housing;

[0009] A positioning mechanism, respectively arranged at both ends of the cross bar, the positioning mechanism includes a connecting plate and an adjusting rod, one end of the connecting plate is connected to the cross bar, and the other end is connected to the adjusting rod. By controlling the up and down position of the adjusting rod, the relative position of the cross bar inside the recloser housing can be adjusted, so as to calibrate the working position of the recloser;

[0010] The positioning mechanism further includes a hollow main body, one end of the main body is connected to the recloser housing, the other end is provided with a transverse groove for connecting the cross bar, the cross bar is provided with a first convex shaft for connecting the connecting plate, both ends of the cross bar move inside the main body, and the end of the first convex shaft is arranged in the transverse groove. The transverse groove is also provided with an inclined groove to prevent the vacuum tube in the pole column from being damaged when the cross bar is closed after dislocation.

[0011] In the present invention, the operating mechanism includes a power member, a telescopic rod, and a link assembly. One end of the link assembly is connected to the telescopic rod, and the other end is connected to the cross bar.

[0012] The power member can drive the telescopic rod to act, thereby driving the cross bar to act through the link.

[0013] In the present invention, a connecting groove is further provided on the main body. The connecting groove is located in the middle of the main body. A second convex shaft is provided on the adjusting rod. The second convex shaft is used to connect the connecting plate, and one end of the second convex shaft is located in the connecting groove.

[0014] The adjusting rod is located inside the main body, and one end of the adjusting rod is connected to the pole column. The adjusting rod can move up and down inside the pole column.

[0015] In the present invention, the inclined groove communicates with the horizontal groove, and the inclined groove is inclined upward. The inclined groove is located at one end of the horizontal groove.

[0016] The horizontal groove includes an end point a and an end point b at the connection with the inclined groove. When the first convex shaft is located at the end point a, the recloser is in the closing position.

[0017] When the first convex shaft is located at the end point b, the recloser is in the opening position.

[0018] In the present invention, the power member is a permanent magnet, and driving the permanent magnet can drive the telescopic rod to act.

[0019] In the present invention, the operating mechanism further includes a manual opening and closing mechanism. The cross bar can drive the cross bar to move left and right through the manual opening and closing mechanism or the power member, thereby controlling the opening or closing of the recloser.

[0020] In the present invention, when the first convex shaft is located in the inclined groove, the driving force of the power member on the cross bar and the driving force of the manual opening and closing mechanism on the cross bar are both smaller than the frictional force between the inclined groove and the first convex shaft.

[0021] In the present invention, the inclined groove includes a contact surface. When the first convex shaft is located in the inclined groove, the first convex shaft is in contact with the contact surface.

[0022] In the present invention, a mounting plate is further provided inside the recloser housing. The mounting plate is located on the inner top surface of the recloser housing. The positioning mechanism is assembled on the mounting plate through fasteners.

[0023] Another circuit breaker of the present invention, the circuit breaker includes the recloser with a positioning structure according to any one of the above technical solutions.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) In the present invention, through the cooperation of the adjusting rod and the connecting groove, the pre-adjustment of the initial position of the cross bar is realized, eliminating the traditional disassembly and adjustment steps, ensuring the consistency of three-phase operation. The inclined design of the inclined groove and the friction force limitation can prevent the cross bar from directly sliding into the closing position after dislocation, avoiding forced closing of the vacuum tube in an uncalibrated state.

[0027] (2) The present invention supports dual modes of manual opening and closing mechanism and permanent magnet drive. The friction force between the inclined groove and the convex shaft is greater than the driving force, preventing unexpected actions caused by misoperation or abnormal power. The hollow main body provides guidance for the cross bar, reducing the risk of deviation; the positioning mechanism is fixed by fasteners to ensure the stability of long-term operation. Description of the drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the internal structure of the recloser Figure 1 ;

[0030] Figure 2 Schematic diagram of the internal structure of the recloser Figure 2 ;

[0031] Figure 3 Schematic diagram of the overall structure of the positioning mechanism;

[0032] Figure 4 Schematic diagram of the three-dimensional structure of the positioning mechanism;

[0033] Figure 5 Schematic diagram of the sectional structure of the positioning mechanism;

[0034] Figure 6 Schematic diagram of the overall structure of the circuit breaker.

[0035] 10. Recloser housing, 11. Mounting plate, 12. Pole column, 20. Operating mechanism, 21. Cross bar, 211. First convex shaft, 22. Power component, 221. Telescopic rod, 222. Link assembly, 23. Manual closing and opening mechanism, 30. Positioning mechanism, 31. Main body, 311. Horizontal slot, 3111. Endpoint a, 3112. Endpoint b, 312. Inclined slot, 3121. Contact surface, 313. Connection slot, 32. Adjusting rod, 321. Second convex shaft, 33. Connecting plate Detailed implementation mode

[0036] Embodiment 1

[0037] This embodiment elaborates in detail a recloser and circuit breaker with a positioning structure, and illustrates the technical solution with reference numerals. As Figures 1 to 6 shown, the recloser includes a recloser housing 10, an operating mechanism 20 and a positioning mechanism 30. In the closing and opening operations of traditional reclosers and circuit breakers, it is necessary to adjust the opening distance and synchronism through an adjusting screw many times, which has the problems of long debugging time and easy errors.

[0038] In this embodiment, three pole columns 12 are provided at the top of the recloser housing 10, and each component is fixed inside the recloser housing 10 through a mounting plate 11. Among them, the mounting plate 11 is welded or assembled through fasteners on the top surface inside the recloser housing 10. The operating mechanism 20 includes a cross bar 21, a power component 22, a telescopic rod 221 and a link assembly 222. The cross bar 21 can move left and right inside the recloser housing 10, and the two ends thereof are provided with first convex shafts 211. It should be noted that in this embodiment, the first convex shaft 211 is a columnar pin structure, that is, through holes are provided at both ends of the cross bar 21, and the first convex shaft 211 is inserted into the through holes and then connected to the positioning mechanism 30. The power component 22 is a permanent magnet, and driving the telescopic rod 221 can drive the link assembly 222 to act, so that the cross bar 21 moves left and right to realize closing and opening. In addition, the operating mechanism 20 is also provided with a manual closing and opening mechanism 23, and the user can control the position of the cross bar 21 through manual operation or automatic drive, that is, the operating mechanism 20 also includes a manual closing and opening mechanism 23.

[0039] The positioning mechanism 30 is located at both ends of the cross bar 21 and is composed of a main body 31, an adjusting rod 32, a second convex shaft 321 and a connecting plate 33. The main body 31 is a hollow structure and is fixed on the mounting plate 11 through fasteners. A horizontal slot 311 and an inclined slot 312 are provided at the lower end thereof. It should be noted that the lower end is the end far from the mounting plate 11, and the upper end is the end connected to the mounting plate 11. The main body 31 has left and right side walls and a connecting wall connecting the two side walls. The horizontal slots 311 are respectively arranged oppositely on the two side walls, and a gap for the cross bar 21 to move is provided between the two side walls.

[0040] Both ends of the first convex shaft 211 are arranged in the two transverse grooves 311 and can slide in the inclined groove 312, that is, both ends of the cross bar 21 are respectively located in the gaps of the two main bodies 31. The adjusting rod 32 is connected to one end of the connecting plate 33 through the second convex shaft 321, and the other end of the connecting plate 33 is connected to the cross bar 21 through the first convex shaft 211 to achieve linkage. In this embodiment, the end of the adjusting rod 32 has a connecting thread, and the adjusting rod 32 is connected to the pole column 12 through the connecting thread. That is, a thread groove is provided in the pole column 12 for installing the adjusting rod 32. When the adjusting rod 32 moves up and down, the relative position of the cross bar 21 can be correspondingly adjusted, so as to achieve precise calibration of the working state.

[0041] The transverse groove 311 includes an end point a3111 and an end point b3112, corresponding to the closing and opening positions respectively. Refer to Figure 4 As shown, at this time, the recloser is in the closing position, the second convex shaft 321 of the adjusting rod 32 is located at the end point a3111, and correspondingly, the end point b3112 is located at the adjacent position of the transverse groove 311 and the inclined groove 312, that is, the intersection of the plane and the inclined plane. When the second convex shaft 321 is located at the end point b3112, the recloser is in the opening position.

[0042] In the opening state, the cross bar 21 moves to the right so that the first convex shaft 211 is located at the end point a3111 of the transverse groove 311. At this time, the connecting rod assembly 222 is in the extended state. When opening is required, the power member 22 drives the telescopic rod 221 to contract, driving the cross bar 21 to move to the left. The first convex shaft 211 slides along the transverse groove 311 to the end point b3112.

[0043] The inclined groove 312 is arranged obliquely upward. If the first convex shaft 211 enters the inclined groove 312, its contact surface 3121 abuts against the first convex shaft 211. Due to the slope design of the inclined groove 312, the cross bar 21 needs to overcome friction when moving, ensuring that the recloser cannot be closed again through the operating mechanism 20. That is, if the cross bar 21 is accidentally displaced due to external force or the adjustment is not in place due to assembly problems, causing the first convex shaft 211 to enter the inclined groove 312, the inclined structure of the inclined groove 312 can prevent the first convex shaft 211 from directly sliding back into the transverse groove 311, avoiding damage caused by forced closing of the vacuum tube in an uncalibrated state.

[0044] Traditional reclosers need to adjust the opening distance and synchronization multiple times through adjusting screws after assembly, which is time-consuming and error-prone. This embodiment solves this problem through a pre-adjustment mechanism. An adjusting screw 6 is provided at the connection between the adjusting rod 32 and the pole column 12. During the assembly stage, by rotating the adjusting screw 6, the second convex shaft 321 moves up and down in the connection groove 313, so as to adjust the initial position of the cross bar 21. The cross bar 21 drives the pin 2 to slide in the notch of the support 3, and the notch is designed with a downward slope. When the pin 2 moves to the edge of the notch, it indicates that the opening is in place and the opening distance meets the standard. The three-phase pole columns 12 can be pre-adjusted synchronously in this way to ensure the consistency of the actions of each phase, saving the later disassembly and adjustment steps.

[0045] The manual opening and closing mechanism 23 and the power component 22 are both controlled to act through the cross bar 21. When the first convex shaft 211 is located in the inclined groove 312 (opening state), the frictional force between the inclined groove 312 and the first convex shaft 211 is greater than the driving force. This design prevents the accidental movement of the cross bar 21 during misoperation or abnormal power, ensuring the stability of the opening state. In addition, the hollow structure of the main body 31 provides guidance for the cross bar 21, avoiding the misalignment of the pole column 12 caused by deviation.

[0046] This solution can also be applied to a circuit breaker, which includes all the positioning structures of the above-mentioned recloser. During the opening process of the circuit breaker, the movement trajectory of the cross bar 21 is precisely controlled by the inclined groove 312, and with the pre-commissioning function of the adjusting rod 32, the action reliability is significantly improved.

[0047] In this embodiment, by integrating the positioning mechanism 30, the pre-commissioning mechanism and the anti-misoperation design, the problems of cumbersome debugging and easily damaged vacuum tubes of traditional reclosers are completely solved. The coordinated action of the adjusting rod 32 and the inclined groove 312 not only realizes precise positioning but also improves the durability of the equipment. In addition, the dual-mode design of manual and automatic drive enhances the operation flexibility. This solution can be widely applied in the power system, providing technical support for the efficient operation and maintenance of reclosers and circuit breakers.

[0048] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A recloser with a positioning structure, characterized in that, The recloser with a positioning structure includes: A recloser housing, at the top of which there are a plurality of pole columns; An operating mechanism arranged inside the recloser housing, the operating mechanism including a cross bar that can move left and right inside the recloser housing; Positioning mechanisms respectively arranged at both ends of the cross bar, the positioning mechanism including a connecting plate and an adjusting rod, one end of the connecting plate is connected to the cross bar, and the other end is connected to the adjusting rod. By controlling the up and down position of the adjusting rod, the relative position of the cross bar inside the recloser housing can be adjusted, so as to calibrate the working position of the recloser; The positioning mechanism further includes a hollow main body, one end of the main body is connected to the recloser housing, and the other end is provided with a transverse groove for connecting the cross bar. There is a first convex shaft on the cross bar for connecting the connecting plate. Both ends of the cross bar move inside the main body, and the end of the first convex shaft is arranged in the transverse groove. The transverse groove is also provided with an inclined groove to prevent the vacuum tube inside the pole column from being damaged when the cross bar is closed after dislocation.

2. The recloser with a positioning structure according to claim 1, wherein, The operating mechanism includes a power member, a telescopic rod and a connecting rod assembly, one end of the connecting rod assembly is connected to the telescopic rod, and the other end is connected to the cross bar; The power member can drive the telescopic rod to act, thereby driving the cross bar to act through the connecting rod.

3. The recloser with a positioning structure according to claim 1 or 2, characterized in that, The main body is also provided with a connecting groove, the connecting groove is located in the middle of the main body, and there is a second convex shaft on the adjusting rod, the second convex shaft is used for connecting the connecting plate, and one end of the second convex shaft is located in the connecting groove; The adjusting rod is located inside the main body, and one end of the adjusting rod is connected to the pole column, and the adjusting rod can move up and down inside the pole column.

4. The recloser with a positioning structure according to claim 3, wherein, The inclined groove communicates with the transverse groove, and the inclined groove is arranged obliquely upward, and the inclined groove is located at one end of the transverse groove; The transverse groove includes an end point a and an end point b at the connection with the inclined groove. When the first convex shaft is located at the end point a, the recloser is in the closing position; When the first convex shaft is located at the end point b, the recloser is in the opening position.

5. The recloser with a positioning structure according to claim 4, wherein, The power member is a permanent magnet, and driving the permanent magnet can drive the telescopic rod to act.

6. The recloser with a positioning structure according to claim 5, wherein, The operating mechanism further includes a manual opening and closing mechanism, and the cross bar can drive the cross bar to move left and right through the manual opening and closing mechanism or the power member, so as to control the opening or closing of the recloser.

7. The recloser with a positioning structure according to claim 6, characterized in that, When the first convex shaft is located in the inclined groove, the driving force of the power member on the cross bar and the driving force of the manual opening and closing mechanism on the cross bar are both less than the friction force between the inclined groove and the first convex shaft.

8. The recloser with a positioning structure according to claim 7, characterized in that, The inclined groove includes a contact surface. When the first convex shaft is located in the inclined groove, the first convex shaft is in contact with the contact surface.

9. The recloser with a positioning structure according to claim 8, characterized in that, There is also an installation plate inside the recloser housing, the installation plate is located on the inner top surface of the recloser housing, and the positioning mechanism is assembled on the installation plate through fasteners.

10. A circuit breaker, characterized in that, The circuit breaker includes the recloser with a positioning structure according to any one of claims 1-9.

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