Device for monitoring operation condition of high-voltage circuit breaker

Abstract

The utility model relates to the technical field of high-voltage circuit breaker operation monitoring, in particular to a high-voltage circuit breaker operation condition monitoring device, which comprises a first rotating shaft, a second rotating shaft and a third rotating shaft, and is internally provided with a contact end face, a movable rod and a leveling block, the two contact end faces are fixedly connected to the upper movable rod and the lower movable rod respectively, the two movable rods are arranged in the vacuum cylinder, and the two leveling blocks are fixedly arranged on the two movable rods in a sleeving mode respectively. The driving mechanism is used for driving the two contact end surfaces to abut against each other; and the monitoring mechanism is used for driving the two leveling blocks. According to the utility model, when a larger concave-convex surface appears on the contact end surfaces, the heteropolar attraction force of the first magnet and the second magnet is utilized to accelerate the downward deflection of the baffle plate and enable the limiting block to abut against the trigger switch in the limiting groove so as to close the cylinder, so that the existence of the larger concave-convex surface on the contact end surfaces is monitored, and the contact of the two contact end surfaces is hindered at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage circuit breaker operation monitoring, in particular to a high-voltage circuit breaker operation status monitoring device. Background Art

[0002] High-voltage circuit breakers can only cut off or close the no-load current and load current in the high-voltage circuit, and when a system failure occurs, the overload current and short-circuit current can be cut off through the action of the relay protection device. It has a fairly complete arc extinguishing structure and sufficient current-breaking capacity.

[0003] The Chinese patent with announcement number CN208142104U discloses a high-voltage circuit breaker. The technology includes a base and a shell. The shell is installed on the top of the base, and the top of both sides of the shell are provided with inclined drainage holes. A horizontal partition is installed inside the shell, and the partition is composed of a horizontal plate and two inclined plates. A horizontally arranged support plate is welded inside the shell, and a plurality of horizontally linearly arranged support columns are welded to the bottom of the support plate, and the end of the support column away from the support plate is welded to the bottom inner wall of the shell. The top of the support plate is provided with a high-voltage circuit breaker body, and the bottom of the high-voltage circuit breaker body is provided with a switch body. The technology has a simple structure, is easy to use, protects the high-voltage circuit breaker, and increases the service life of the high-voltage circuit breaker. However, the above technology still has problems in use due to structural limitations:

[0004] In a vacuum high-voltage circuit breaker, two closing surfaces are located in a vacuum pipe and need to be driven to contact each other to complete the closing operation. However, after a long period of contact, the two closing surfaces will experience surface wear, resulting in larger concave and convex surfaces, which reduces the contact area of ​​the two closing surfaces. When the closing operation is performed in this state, a large amount of heat is generated due to the reduction in the closing contact area of ​​the high-voltage current. However, the above technology does not monitor the degree of concave and convexity of the closing surface, which seriously affects the normal operation of the vacuum high-voltage circuit breaker. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and proposes a high-voltage circuit breaker operating condition monitoring device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-voltage circuit breaker operating condition monitoring device comprises a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the high-voltage circuit breaker monitoring device is provided with:

[0008] A vacuum cylinder, an upper moving rod and a lower moving rod, wherein the vacuum cylinder is arranged on one side of the third rotating shaft, and the upper moving rod and the lower moving rod are both slidably sleeved in the vacuum cylinder;

[0009] A contact end surface, a movable rod and a flattening block, wherein the two contact end surfaces are respectively fixedly connected to the upper movable rod and the lower movable rod, the two movable rods are arranged in the vacuum cylinder, the two flattening blocks are respectively fixedly sleeved on the two movable rods, and the two flattening blocks are respectively movable against the two contact end surfaces to monitor the surface concavity and convexity of the two contact end surfaces;

[0010] A driving mechanism, the driving mechanism is arranged on the first rotating shaft, the second rotating shaft and the third rotating shaft, and is used to drive the two contact end faces to abut against each other;

[0011] The monitoring mechanism is arranged in the vacuum cylinder and is used for driving the two leveling blocks.

[0012] Preferably, the driving mechanism comprises:

[0013] A cam and a first rotating rod, wherein the cam is fixedly sleeved on the first rotating shaft, the first rotating rod is fixedly sleeved on the third rotating shaft, and the cam and the first rotating rod are movably opposed to each other;

[0014] A second rotating rod and a limiting wheel, wherein the second rotating rod is fixedly connected to the third rotating shaft, the limiting wheel is fixedly connected to the first rotating shaft, and the second rotating rod and the limiting wheel are movably offset from each other;

[0015] An energy storage rotating rod and an energy storage spring, wherein the energy storage rotating rod is fixedly mounted on the first rotating shaft, and the energy storage spring is welded to the energy storage rotating rod;

[0016] A starting rod, a connecting rod and a deflection member, wherein the starting rod is fixedly mounted on the third rotating shaft, the connecting rod is rotatably mounted on the starting rod, the deflection member is fixedly sleeved on the second rotating shaft, and the two ends of the deflection member are respectively connected to the connecting rod and the lower moving rod.

[0017] Preferably, one end of the deflection member is connected to the connecting rod pin, and the other end of the deflection member is connected to the lower moving rod pin.

[0018] Preferably, the monitoring mechanism comprises:

[0019] A slide groove and a cylinder, wherein the slide groove is opened in the vacuum cylinder, and the cylinder is fixedly installed in the slide groove;

[0020] A moving block and a cavity, wherein the moving block is slidably sleeved in the slide groove, the moving block is fixedly connected to the output end of the cylinder, and the two cavities are both opened in the moving block;

[0021] Through holes and baffles, two through holes are opened on the moving block, the two through holes are respectively connected with two cavities, the two baffles are rotatably installed in the cavities, the connection points between the baffles and the cavities are welded with torsion springs, and the two baffles are movably opposed to the movable rod;

[0022] A first magnet and a second magnet, wherein the first magnet is fixedly connected to the baffle, the second magnet is fixedly connected in the cavity, and the first magnet and the second magnet are connected;

[0023] A long rod and an opening, wherein the long rod is arranged on the baffle, the long rod is connected to the movable rod, and the two openings are both arranged on the movable block, and the two openings are respectively connected to the two cavities;

[0024] A limit block, a limit slot and a trigger switch, wherein the limit block is fixedly connected to the movable rod, two limit slots are respectively arranged at the upper and lower ends of the slide slot, the limit block is movably sleeved in the limit slot, and several trigger switches are respectively fixedly installed on the inner wall of the vacuum cylinder and the limit slot, and the trigger switch is electrically connected to the cylinder.

[0025] Preferably, the movable rod is slidably sleeved in the through hole, and the first magnet and the second magnet attract each other with opposite poles.

[0026] Preferably, both ends of the long rod are respectively connected to the baffle and the movable rod pin, the trigger switch on the inner wall of the vacuum cylinder movably abuts against the contact end surface of the lower moving rod, and the trigger switch in the limit groove movably abuts against the limit block.

[0027] Compared with the prior art, the utility model has the following advantages:

[0028] 1. When a large concave-convex surface appears on the contact end surface of the utility model, the movable rod pushes the baffle downward, and uses the attraction between the opposite poles of the first magnet and the second magnet to accelerate the downward deflection of the baffle, and the movable rod drives the limit block to move into the limit groove, and the limit block and the trigger switch in the limit groove are offset to close the cylinder, thereby detecting the presence of a large concave-convex surface on the contact end surface. At the same time, the stationary moving block prevents the two contact end surfaces from contacting each other, thereby avoiding the generation of a large amount of heat and affecting the normal operation of the high-voltage circuit breaker.

[0029] 2. The utility model utilizes an external motor to drive the first rotating shaft to rotate, the first rotating shaft drives the cam to rotate, the rotating cam abuts against the first rotating rod, the third rotating shaft drives the second rotating rod to rotate, the first rotating shaft drives the limiting wheel to rotate, the limiting wheel abuts against the second rotating rod to maintain the deflected position of the second rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a high-voltage circuit breaker operating condition monitoring device proposed by the utility model Figure 1 ;

[0031] Figure 2 A schematic diagram of the structure of a high-voltage circuit breaker operating condition monitoring device proposed by the utility model Figure 2 ;

[0032] Figure 3A schematic cross-sectional view of a vacuum cylinder of a high-voltage circuit breaker operating condition monitoring device proposed in the utility model Figure 1 ;

[0033] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure of part A;

[0034] Figure 5 A schematic cross-sectional view of a vacuum cylinder of a high-voltage circuit breaker operating condition monitoring device proposed in the utility model Figure 2 ;

[0035] Figure 6 For the utility model Figure 5 A schematic diagram of the enlarged structure of part B;

[0036] Figure 7 For the utility model Figure 5 A schematic diagram of the enlarged structure of part C;

[0037] Figure 8 For the utility model Figure 7 Schematic diagram of the enlarged structure of part D.

[0038] In the figure: 1. first rotating shaft; 2. trigger switch; 3. second rotating shaft; 4. third rotating shaft; 5. vacuum cylinder; 6. upper moving rod; 7. lower moving rod; 8. contact end face; 9. movable rod; 10. leveling block; 11. cam; 12. first rotating rod; 13. second rotating rod; 14. limiting wheel; 15. energy storage rotating rod; 16. energy storage spring; 17. starting rod; 18. connecting rod; 19. deflection member; 20. slide groove; 21. cylinder; 22. moving block; 23. cavity; 24. through hole; 25. baffle; 26. first magnet; 27. second magnet; 28. long rod; 29. ​​opening; 30. limiting block; 31. limiting groove. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0040] Reference Figure 1-Figure 8 A high-voltage circuit breaker operation status monitoring device comprises a first rotating shaft 1, a second rotating shaft 3 and a third rotating shaft 4. The high-voltage circuit breaker monitoring device is provided with:

[0041] A vacuum cylinder 5, an upper moving rod 6 and a lower moving rod 7. The vacuum cylinder 5 is arranged on one side of the third rotating shaft 4. The upper moving rod 6 and the lower moving rod 7 are both slidably sleeved in the vacuum cylinder 5.

[0042] The contact end faces 8, the movable rods 9 and the leveling blocks 10, the two contact end faces 8 are respectively fixedly connected to the upper movable rod 6 and the lower movable rod 7, the two movable rods 9 are arranged in the vacuum cylinder 5, the two leveling blocks 10 are respectively fixedly sleeved on the two movable rods 9, and the two leveling blocks 10 are respectively movable against the two contact end faces 8 to monitor the surface concave-convex degree of the two contact end faces 8;

[0043] A number of protrusions may be provided on the flattening block 10 to monitor the degree of concavity and convexity at different points of the contact end surface 8;

[0044] When a large concave-convex surface appears on the contact end surface 8, the position difference in the vertical direction of the concave-convex surface drives the leveling block 10 to move;

[0045] A driving mechanism, which is arranged on the first rotating shaft 1, the second rotating shaft 3 and the third rotating shaft 4, and is used to drive the two contact end faces 8 to abut against each other;

[0046] The monitoring mechanism is arranged in the vacuum cylinder 5 and is used to drive the two leveling blocks 10 .

[0047] The driving mechanism includes:

[0048] A cam 11 and a first rotating rod 12, wherein the cam 11 is fixedly sleeved on the first rotating shaft 1, and the first rotating rod 12 is fixedly sleeved on the third rotating shaft 4, and the cam 11 and the first rotating rod 12 are movably opposed to each other;

[0049] A second rotating rod 13 and a limiting wheel 14, wherein the second rotating rod 13 is fixedly connected to the third rotating shaft 4, and the limiting wheel 14 is fixedly connected to the first rotating shaft 1, and the second rotating rod 13 and the limiting wheel 14 are movable against each other;

[0050] As attached Figure 1 As shown, the third rotating shaft 4 drives the second rotating rod 13 to rotate counterclockwise, and the first rotating shaft 1 drives the limiting wheel 14 to rotate clockwise, so that the limiting wheel 14 abuts against the second rotating rod 13 to maintain the deflected position of the second rotating rod 13 and the third rotating shaft 4;

[0051] An energy storage rotating rod 15 and an energy storage spring 16, wherein the energy storage rotating rod 15 is fixedly mounted on the first rotating shaft 1, and the energy storage spring 16 is welded to the energy storage rotating rod 15;

[0052] The starting rod 17, the connecting rod 18 and the deflection member 19, the starting rod 17 is fixedly mounted on the third rotating shaft 4, the connecting rod 18 is rotatably mounted on the starting rod 17, the deflection member 19 is fixedly sleeved on the second rotating shaft 3, and the two ends of the deflection member 19 are respectively connected to the connecting rod 18 and the lower moving rod 7.

[0053] The upper moving rod 6 and the lower moving rod 7 may be composed of insulating material and conductive material, the conductive material of the upper moving rod 6 and the lower moving rod 7 may be connected to the wire, and the insulating material of the lower moving rod 7 is connected to the deflection member 19; when the two contact end faces 8 are in contact, the conductive material of the upper moving rod 6 and the lower moving rod 7 may form a loop with the wire;

[0054] One end of the deflection member 19 is pin-connected to the connecting rod 18 , and the other end of the deflection member 19 is pin-connected to the lower moving rod 7 .

[0055] When both ends of the deflection member 19 are in a horizontal state, the two contact end surfaces 8 are respectively against the flattening block 10; Figure 1 As shown, when the right end of the deflection member 19 is higher than the left end, the two contact end faces 8 abut against each other;

[0056] Monitoring agencies include:

[0057] A chute 20 and a cylinder 21, wherein the chute 20 is provided in the vacuum cylinder 5, and the cylinder 21 is fixedly installed in the chute 20;

[0058] A moving block 22 and a cavity 23, wherein the moving block 22 is slidably sleeved in the slide groove 20, the moving block 22 is fixedly connected to the output end of the cylinder 21, and two cavities 23 are both opened in the moving block 22;

[0059] Through holes 24 and baffles 25, two through holes 24 are both opened on the moving block 22, the two through holes 24 are respectively connected to the two cavities 23, the two baffles 25 are rotatably installed in the cavities 23, the connection points between the baffles 25 and the cavities 23 are welded with torsion springs, and the two baffles 25 and the movable rod 9 are movably opposed;

[0060] When a small concave-convex surface appears on the contact end surface 8, the movable rod 9 is driven to move slightly, and the small movement fails to drive the first magnet 26 and the second magnet 27 to correspond, and the contact between the flat block 10 and the contact end surface 8 is maintained under the elastic force of the torsion spring;

[0061] When the contact end surface 8 has a relatively large concave-convex surface, the movable rod 9 is driven to move significantly, and the significant movement drives the first magnet 26 and the second magnet 27 to correspond, so that the limit block 30 moves into the limit groove 31;

[0062] A first magnet 26 and a second magnet 27, wherein the first magnet 26 is fixedly connected to the baffle 25, and the second magnet 27 is fixedly connected to the cavity 23, and the first magnet 26 and the second magnet 27 are connected;

[0063] The long rod 28 and the opening 29, the long rod 28 is arranged on the baffle 25, the long rod 28 is connected to the movable rod 9, and the two openings 29 are both opened on the moving block 22, and the two openings 29 are respectively connected to the two cavities 23;

[0064] The limit block 30, the limit groove 31 and the trigger switch 2, the limit block 30 is fixedly connected to the movable rod 9, the two limit grooves 31 are respectively opened at the upper and lower ends of the slide groove 20, the limit block 30 is movably sleeved in the limit groove 31, and several trigger switches 2 are respectively fixedly installed on the inner wall of the vacuum cylinder 5 and the limit groove 31, and the trigger switch 2 is electrically connected to the cylinder 21.

[0065] The movable rod 9 is slidably sleeved in the through hole 24, and the first magnet 26 and the second magnet 27 have opposite poles that attract each other.

[0066] The two ends of the long rod 28 are pin-connected with the baffle 25 and the movable rod 9 respectively, the trigger switch 2 on the inner wall of the vacuum cylinder 5 and the contact end surface 8 of the lower moving rod 7 are movably opposed to each other, and the trigger switch 2 in the limit groove 31 and the limit block 30 are movably opposed to each other.

[0067] When the trigger switch 2 on the inner wall of the vacuum cylinder 5 and the contact end face 8 of the lower moving rod 7 are movably abutted, the cylinder 21 is started, and the cylinder 21 drives the moving block 22 to slide unidirectionally once in the slide groove 20, and then the cylinder 21 is automatically closed; when the trigger switch 2 in the limit groove 31 and the limit block 30 are movably abutted, the cylinder 21 is closed.

[0068] The functional principle of the utility model can be explained through the following operation modes:

[0069] The first rotating shaft 1 is driven to rotate by an external motor, and the first rotating shaft 1 drives the cam 11 to rotate, and the rotating cam 11 abuts against the first rotating rod 12. Figure 1 As shown, the first rotating rod 12 drives the third rotating shaft 4 to rotate counterclockwise, the first rotating shaft 1 drives the energy storage rotating rod 15 to rotate, and the energy storage rotating rod 15 drives the lower end of the energy storage spring 16 to move to pull the energy storage spring 16;

[0070] At the same time, the third rotating shaft 4 drives the starting rod 17 to rotate counterclockwise, and the starting rod 17 drives the connecting rod 18 to move downward. Figure 1 As shown, the connecting rod 18 drives the left end of the deflection member 19 to move downward, allowing the deflection member 19 and the second rotating shaft 3 to rotate, while the right end of the deflection member 19 moves upward, and drives the lower moving rod 7 to move upward;

[0071] When the deflection member 19 rotates to a horizontal state, the lower moving rod 7 abuts against the trigger switch 2 on the inner wall of the vacuum cylinder 5, and the cylinder 21 is started. At this time, the driving of the first rotating shaft 1 stops, and the cylinder 21 drives the moving block 22 to move in the slide groove 20, and the two leveling blocks 10 respectively abut against the two contact end surfaces 8, and driven by the moving block 22, the leveling block 10 and the contact end surface 8 are in sliding contact;

[0072] Several protrusions can be provided on the flattening block 10 to facilitate monitoring of the concave-convex degree of different points of the contact end surface 8, as shown in the attached Figure 8As shown, when a larger concave-convex surface appears on the contact end face 8, the concave-convex surface pushes the flat block 10 and the movable rod 9 to move downward, and the movable rod 9 pushes the baffle 25 downward to make the first magnet 26 and the second magnet 27 correspond to each other, and utilizes the attraction between the opposite poles of the first magnet 26 and the second magnet 27 to accelerate the downward deflection of the baffle 25. At the same time, the baffle 25 accelerates the downward movement of the movable rod 9 through the long rod 28. The movable rod 9 drives the limit block 30 to move downward and move into the limit groove 31. The limit block 30 is offset from the trigger switch 2 in the limit groove 31 to close the cylinder 21.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage circuit breaker operating condition monitoring device, comprising a first rotating shaft (1), a second rotating shaft (3) and a third rotating shaft (4), characterized in that: The high voltage circuit breaker monitoring device is provided with: A vacuum cylinder (5), an upper moving rod (6) and a lower moving rod (7), wherein the vacuum cylinder (5) is arranged on one side of the third rotating shaft (4), and the upper moving rod (6) and the lower moving rod (7) are both slidably sleeved in the vacuum cylinder (5); A contact end surface (8), a movable rod (9) and a leveling block (10), wherein the two contact end surfaces (8) are respectively fixedly connected to an upper movable rod (6) and a lower movable rod (7), the two movable rods (9) are arranged in a vacuum cylinder (5), the two leveling blocks (10) are respectively fixedly sleeved on the two movable rods (9), and the two leveling blocks (10) are respectively movably opposed to the two contact end surfaces (8) to monitor the surface unevenness of the two contact end surfaces (8); A driving mechanism, the driving mechanism is arranged on the first rotating shaft (1), the second rotating shaft (3) and the third rotating shaft (4), and is used to drive the two contact end surfaces (8) to abut against each other; A monitoring mechanism is arranged in the vacuum cylinder (5) and is used to drive two leveling blocks (10).

2. A high voltage circuit breaker operating condition monitoring device according to claim 1, characterized in that: The driving mechanism comprises: A cam (11) and a first rotating rod (12), wherein the cam (11) is fixedly sleeved on the first rotating shaft (1), and the first rotating rod (12) is fixedly sleeved on the third rotating shaft (4), and the cam (11) and the first rotating rod (12) are movably opposed to each other; A second rotating rod (13) and a limiting wheel (14), wherein the second rotating rod (13) is fixedly connected to the third rotating shaft (4), and the limiting wheel (14) is fixedly connected to the first rotating shaft (1), and the second rotating rod (13) and the limiting wheel (14) are movably opposed to each other; An energy storage rotating rod (15) and an energy storage spring (16), wherein the energy storage rotating rod (15) is fixedly mounted on the first rotating shaft (1), and the energy storage spring (16) is welded to the energy storage rotating rod (15); A starting rod (17), a connecting rod (18) and a deflection member (19), wherein the starting rod (17) is fixedly mounted on the third rotating shaft (4), the connecting rod (18) is rotatably mounted on the starting rod (17), the deflection member (19) is fixedly sleeved on the second rotating shaft (3), and two ends of the deflection member (19) are respectively connected to the connecting rod (18) and the lower moving rod (7).

3. A high voltage circuit breaker operating condition monitoring device according to claim 2, characterized in that: One end of the deflection member (19) is connected to the connecting rod (18) by a pin, and the other end of the deflection member (19) is connected to the lower moving rod (7) by a pin.

4. A high voltage circuit breaker operating condition monitoring device according to claim 1, characterized in that: The monitoring agencies include: A slide groove (20) and a cylinder (21), wherein the slide groove (20) is opened in the vacuum cylinder (5), and the cylinder (21) is fixedly installed in the slide groove (20); A moving block (22) and a cavity (23), wherein the moving block (22) is slidably sleeved in the slide groove (20), the moving block (22) is fixedly connected to the output end of the cylinder (21), and the two cavities (23) are both opened in the moving block (22); A through hole (24) and a baffle (25), wherein the two through holes (24) are both provided on the moving block (22), the two through holes (24) are respectively connected to the two cavities (23), the two baffles (25) are rotatably installed in the cavities (23), a torsion spring is welded at the connection point between the baffle (25) and the cavity (23), and the two baffles (25) and the movable rod (9) are movably opposed to each other; A first magnet (26) and a second magnet (27), wherein the first magnet (26) is fixedly connected to the baffle (25), and the second magnet (27) is fixedly connected to the cavity (23), and the first magnet (26) and the second magnet (27) are connected; A long rod (28) and an opening (29), wherein the long rod (28) is arranged on the baffle (25), the long rod (28) is connected to the movable rod (9), and the two openings (29) are both opened on the moving block (22), and the two openings (29) are respectively connected to the two cavities (23); A limit block (30), a limit groove (31) and a trigger switch (2), wherein the limit block (30) is fixedly connected to the movable rod (9), two limit grooves (31) are respectively arranged at the upper and lower ends of the slide groove (20), the limit block (30) is movably sleeved in the limit groove (31), a plurality of trigger switches (2) are respectively fixedly installed on the inner wall of the vacuum cylinder (5) and the limit groove (31), and the trigger switch (2) is electrically connected to the cylinder (21).

5. A high voltage circuit breaker operating condition monitoring device according to claim 4, characterized in that: The movable rod (9) is slidably sleeved in the through hole (24), and the first magnet (26) and the second magnet (27) attract each other with opposite poles.

6. A high voltage circuit breaker operating condition monitoring device according to claim 4, characterized in that: The two ends of the long rod (28) are respectively connected to the baffle (25) and the movable rod (9) by pins, the trigger switch (2) on the inner wall of the vacuum cylinder (5) and the contact end surface (8) of the lower movable rod (7) are movably opposed to each other, and the trigger switch (2) in the limit groove (31) and the limit block (30) are movably opposed to each other.

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