Outdoor high-voltage vacuum circuit breaker

Abstract

The invention belongs to the technical field of circuit breakers, and discloses an outdoor high-voltage vacuum circuit breaker which comprises an insulating pull rod, a protection mechanism is fixedly mounted at the bottom of the insulating pull rod, a driving mechanism is rotatably mounted at the top of the insulating pull rod, the protection mechanism comprises a bottom plate, a protection net is fixedly connected to the edge of the bottom plate, and a partition plate is fixedly connected to the inner wall of the protection net. The top end of the protective net is fixedly connected with a top cover. According to the invention, the insulating pull rod is installed in the protective net, so that sand wind in the air is blown and blocked on the surface of the protective net and cannot impact the insulating pull rod, thereby avoiding continuous friction of fine particles on the surface of the insulating pull rod and damage of the insulating pull rod, and meanwhile, the rotating banister brush can also clean the protective net, so that the service life of the protective net is prolonged. Therefore, the phenomenon that the temperature of the insulating pull rod is high due to the fact that the meshes of the protective net are blocked and wind cannot be blown to the surface of the insulating pull rod is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to an outdoor high-voltage vacuum circuit breaker. Background Art

[0002] Outdoor high-voltage vacuum circuit breaker is a high-voltage switchgear used in power systems, especially in outdoor environments. It is mainly used to break and close the load current, no-load current and short-circuit current in high-voltage circuits to protect the safe and stable operation of the power system. This circuit breaker uses vacuum as the arc extinguishing medium, and has the advantages of strong arc extinguishing ability and long electrical life. It is widely used in power plants, substations and power distribution systems of industrial and mining enterprises in power systems.

[0003] Outdoor high-voltage vacuum circuit breakers are usually installed on outdoor poles or special brackets. However, in areas with heavy wind and sand, the continuous friction of fine particles on the surface of the insulating rod will cause damage to the insulating material, reduce its thickness and leave tiny defects, which will become the starting point of partial discharge and seriously affect the service life of the insulating rod. Secondly, dust and dirt will be deposited on the surface of the insulating rod. When the leakage current passes through the deposit, it will cause local heating and damage the insulating material. Summary of the invention

[0004] The present application proposes an outdoor high-voltage vacuum circuit breaker, which has the advantage of protecting an insulating pull rod and is used to solve the problem that continuous friction of fine particles on the surface of the insulating pull rod may cause damage to the insulating material.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an outdoor high-voltage vacuum circuit breaker, comprising a base, an isolation interlock installed inside the base, an isolation mounting frame fixedly connected to the front of the base, a plurality of insulating pillars fixedly installed on the front of the isolation mounting frame, an isolation knife seat fixedly connected to the upper end of the insulating pillar, a rotating rod rotatably installed in the middle of the isolation mounting frame, a plurality of connecting sleeves fixedly installed in the middle of the rotating rod, a separation and closing handle fixedly connected to the left end of the rotating rod, a plurality of vacuum arc extinguishing chambers fixedly connected to the upper surface of the base, a current transformer fixedly installed on the front of the vacuum arc extinguishing chamber, an isolation blade movably installed on the front of the current transformer, a connecting head fixedly connected to the front end of the isolation blade, an insulating pull rod rotatably installed in the middle of the isolation blade, a protective mechanism fixedly installed at the bottom of the insulating pull rod, and a driving mechanism rotatably installed on the top of the insulating pull rod.

[0006] Preferably, the protective mechanism includes a base plate, a protective net is fixedly connected to the edge of the base plate, a partition is fixedly connected to the inner wall of the protective net, a top cover is fixedly connected to the top of the protective net, a rotating ring is rotatably installed inside the top cover, and a fixed plate is rotatably installed inside the rotating ring.

[0007] Preferably, the driving mechanism includes a long sleeve, the top of which is fixedly connected to a plurality of upper driving leaves, the bottom of which is fixedly connected to a large gear, the middle of which is movably sleeved with a short sleeve, the top of which is fixedly connected to a plurality of lower driving leaves, a plurality of long rods rotatably mounted on the lower end of the short sleeve, the top of the long rods is fixedly connected to a small gear, the middle of the long rods is fixedly connected to a soft brush, and the bottom ends of the plurality of long rods are rotatably mounted with I-shaped parts.

[0008] Preferably, the isolation interlock is fixedly connected to the right end of the rotating rod, and the bottom end of the insulating pull rod is rotatably connected to the connecting sleeve.

[0009] Preferably, the bottom plate and the fixing plate are both fixedly connected to the insulating pull rods, and through holes are provided on the surfaces of the bottom plate and the partition plate.

[0010] Preferably, the long sleeve and the I-shaped piece are movably connected to the insulating pull rod, and the large gear is meshed with multiple small gears.

[0011] Preferably, the lower end of the short sleeve is rotatably connected to the top cover, the rotating ring is located between the small gear and the soft brush and is rotatably connected to the long rod, and the middle part of the I-shaped piece is rotatably connected to the partition.

[0012] Preferably, the upper surface and the lower surface of the I-shaped piece are both provided with a plurality of arc holes arranged equidistantly around the circumference, the upper arc holes and the lower arc holes are offset from each other, and the I-shaped piece is in contact with both the bottom plate and the partition plate.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention installs the insulating rod inside the protective net so that the wind and sand in the air are blocked on the surface of the protective net and cannot hit the insulating rod, thereby avoiding continuous friction of fine particles on the surface of the insulating rod to cause damage to the insulating rod. At the same time, the rotating soft brush can also clean the protective net to avoid clogging of the mesh of the protective net, so that the wind cannot blow to the surface of the insulating rod, resulting in a high temperature of the insulating rod.

[0014] 2. The present invention drives the soft brush to rotate by the upper driving blade, and drives the soft brush to revolve by the lower driving blade, so that the rotating soft brush cleans the mesh of the protective net and the surface of the insulating pull rod. The cleaned dust and dirt will fall on the upper surface of the I-shaped part. Due to the rotation of the soft brush, the dust and dirt are swept into the upper arc hole and rotate with the arc hole. When the upper arc hole is connected with the through hole of the partition, the dust and dirt will fall on the bottom upper surface of the I-shaped part. As the I-shaped part continues to rotate, the dust and dirt pass through the through hole of the partition and fall outside, thereby solving the existing problem of local heating caused by dust and dirt deposition and causing damage to the insulating material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0016] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 A half-section schematic diagram of the protective net structure of the present invention; Figure 3 It is a schematic diagram of the driving mechanism of the present invention; Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 It is a schematic diagram of the structure of the I-shaped piece in the present invention.

[0017] Among them: 1. Base; 2. Isolation interlock; 3. Isolation mounting frame; 4. Insulation support; 5. Isolation knife seat; 6. Rotating rod; 7. Connecting sleeve; 8. Opening and closing handle; 9. Vacuum interrupter; 10. Current transformer; 11. Isolation blade; 12. Connector; 13. Insulating pull rod; 14. Protection mechanism; 141. Bottom plate; 142. Protection net; 143. Partition; 144. Top cover; 145. Rotating ring; 146. Fixed plate; 15. Driving mechanism; 151. Long sleeve; 152. Upper driving blade; 153. Large gear; 154. Short sleeve; 155. Lower driving blade; 156. Long rod; 157. Soft brush; 158. Small gear; 159. I-shaped part. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] See also Figure 1-Figure 5The embodiment of the present invention provides an outdoor high-voltage vacuum circuit breaker, comprising a base 1, an isolating interlock 2 is installed inside the base 1, an isolating mounting frame 3 is fixedly connected to the front of the base 1, a plurality of insulating pillars 4 are fixedly installed on the front of the isolating mounting frame 3, an isolating knife seat 5 is fixedly connected to the upper end of the insulating pillar 4, a rotating rod 6 is rotatably installed in the middle of the isolating mounting frame 3, a plurality of connecting sleeves 7 are fixedly installed in the middle of the rotating rod 6, a splitting and closing handle 8 is fixedly connected to the left end of the rotating rod 6, a plurality of vacuum interrupters 9 are fixedly connected to the upper surface of the base 1, a current transformer 10 is fixedly installed on the front of the vacuum interrupter 9, an isolating blade 11 is movably installed on the front of the current transformer 10, a connecting head 12 is fixedly connected to the front end of the isolating blade 11, an insulating pull rod 13 is rotatably installed in the middle of the isolating blade 11, a protective mechanism 14 is fixedly installed at the bottom of the insulating pull rod 13, and a top rotating mechanism 14 is fixedly installed at the top of the insulating pull rod 13. A driving mechanism 15 is dynamically installed, and the protective mechanism 14 includes a bottom plate 141. A protective net 142 is fixedly connected to the edge of the bottom plate 141, a partition 143 is fixedly connected to the inner wall of the protective net 142, and a top cover 144 is fixedly connected to the top of the protective net 142. A rotating ring 145 is rotatably installed inside the top cover 144, and a fixed plate 146 is rotatably installed inside the rotating ring 145. Its function is to install the insulating rod 13 inside the protective net 142 so that the wind and sand in the air are blocked on the surface of the protective net 142 and cannot hit the insulating rod 13, thereby avoiding continuous friction of fine particles on the surface of the insulating rod 13, causing damage to the insulating rod 13. At the same time, the rotating soft brush 157 will also clean the protective net 142, thereby avoiding clogging of the mesh of the protective net 142, so that the wind cannot blow to the surface of the insulating rod 13, resulting in a higher temperature of the insulating rod 13.

[0020] The driving mechanism 15 includes a long sleeve 151, a plurality of upper driving leaves 152 are fixedly connected to the top of the long sleeve 151, a large gear 153 is fixedly connected to the bottom of the long sleeve 151, a short sleeve 154 is movably sleeved in the middle of the long sleeve 151, a plurality of lower driving leaves 155 are fixedly connected to the top of the short sleeve 154, a plurality of long rods 156 are rotatably mounted on the lower end of the short sleeve 154, a small gear 158 is fixedly connected to the top of the long rod 156, a soft brush 157 is fixedly connected to the middle of the long rod 156, and a plurality of long rods 156 are rotatably mounted on the lower end of the short sleeve 154. The bottom end of the frame is rotatably installed with a work-shaped piece 159, whose function is that the wind will blow the multiple upper driving blades 152 to rotate, the upper driving blades 152 will drive the long sleeve 151 and the large gear 153 to rotate, the large gear 153 will drive the meshing small gear 158 to rotate, and the small gear 158 will drive the soft brush 157 to rotate through the long rod 156; under the blowing of the wind, the lower driving blade 155 will drive the short sleeve 154 to rotate but in the opposite direction of the rotation of the long sleeve 151, and the short sleeve 154 will drive the multiple long rods 156 and the soft brush 157 to revolve.

[0021] Among them, the isolation chain 2 is fixedly connected to the right end of the rotating rod 6, the bottom end of the insulating pull rod 13 is rotatably connected to the connecting sleeve 7, the bottom plate 141 and the fixed plate 146 are fixedly connected to the insulating pull rod 13, the surfaces of the bottom plate 141 and the partition 143 are provided with through holes, the long sleeve 151 and the I-shaped piece 159 are movably sleeved with the insulating pull rod 13, the large gear 153 and the plurality of small gears 158 are meshed, the lower end of the short sleeve 154 is rotatably connected to the top cover 144, the rotating ring 145 is located between the small gear 158 and the soft brush 157 and is rotatably connected to the long rod 156, the middle part of the I-shaped piece 159 is rotatably connected to the partition 143, the upper surface and the lower surface of the I-shaped piece 159 are provided with a plurality of arc holes arranged equidistantly around the circumference, the upper arc holes and the lower arc holes are staggered with each other, the I-shaped piece 159 is in contact with the bottom plate 141 and the partition 143, and its function is to drive the blade 151 through the upper drive blade 153. 2 drives the soft brush 157 to rotate, and the lower driving blade 155 drives the soft brush 157 to revolve, so that the rotating soft brush 157 cleans the mesh of the protective net 142 and the surface of the insulating pull rod 13, and the cleaned dust and dirt will fall on the upper surface of the I-shaped piece 159. Due to the rotation of the soft brush 157, the dust and dirt are swept into the upper arc hole and rotate with the arc hole. When the upper arc hole is connected with the through hole of the partition 143, the dust and dirt will fall on the bottom upper surface of the I-shaped piece 159. At this time, the lower arc hole is not connected with the through hole of the bottom plate 141. As the I-shaped piece 159 continues to rotate, the upper arc hole is no longer connected with the through hole of the partition 143, while the lower arc hole is connected with the through hole of the bottom plate 141. The dust and dirt pass through the through hole of the partition 143 and fall outside, thereby solving the existing problem of local heating caused by dust and dirt deposition and causing damage to the insulating material.

[0022] Working principle: The surface of the wind-blown sand protection net 142 in the air will be blocked on the surface, so that it cannot hit the insulating pull rod 13, thereby preventing the continuous friction of fine particles on the surface of the insulating pull rod 13. At the same time, the wind will blow the multiple upper driving blades 152 to rotate, and the upper driving blades 152 will drive the long sleeve 151 and the large gear 153 to rotate, and the large gear 153 will drive the meshing small gear 158 to rotate. The small gear 158 will drive the soft brush 157 to rotate through the long rod 156, and the rotating soft brush 157 will clean the dust and dirt on the surface of the insulating pull rod 13. At the same time, the soft brush 157 will also clean the protective net 142 to prevent the mesh of the protective net 142 from being blocked, thereby preventing the wind from blowing on the surface of the insulating pull rod 13 and affecting the heat loss of the insulating pull rod 13; When the wind blows, the lower driving blade 155 will drive the short sleeve 154 to rotate, but in the opposite direction to the rotation direction of the long sleeve 151. The short sleeve 154 will drive the multiple long rods 156 to revolve, thereby driving the self-rotating soft brush 157 to further clean the mesh of the protective net 142 and the surface of the insulating rod 13 to prevent dust and dirt from accumulating on the surface of the insulating rod 13 to form a conductive or semi-conductive film. This film may increase the leakage current, thereby reducing the insulation resistance of the insulating rod 13, and even cause flashover in severe cases. When the leakage current passes through the sediment, it will cause local heating. This thermal effect will further damage the insulating material, increasing The aging process is accelerated and the mechanical strength of the insulating pull rod 13 may be reduced; the cleaned dust and dirt will fall on the upper surface of the I-shaped piece 159, and due to the rotation of the soft brush 157, they are swept into the upper arc hole and rotate with the arc hole. When the upper arc hole is connected with the through hole of the partition 143, the dust and dirt will fall on the bottom upper surface of the I-shaped piece 159. At this time, the lower arc hole is not connected with the through hole of the bottom plate 141. As the I-shaped piece 159 continues to rotate, the upper arc hole is no longer connected with the through hole of the partition 143, while the lower arc hole is connected with the through hole of the bottom plate 141, and the dust and dirt pass through the through hole of the partition 143 and fall outside.

Claims

1. An outdoor high-voltage vacuum circuit breaker, comprising a base (1), characterized in that: An isolation interlock (2) is installed inside the base (1); an isolation mounting frame (3) is fixedly connected to the front of the base (1); a plurality of insulating pillars (4) are fixedly installed on the front of the isolation mounting frame (3); an isolation knife seat (5) is fixedly connected to the upper end of the insulating pillar (4); a rotating rod (6) is rotatably installed in the middle of the isolation mounting frame (3); a plurality of connecting sleeves (7) are fixedly installed in the middle of the rotating rod (6); a separation handle (8) is fixedly connected to the left end of the rotating rod (6); and the upper end of the base (1) is fixedly connected to the upper end of the base (1). A plurality of vacuum interrupter chambers (9) are fixedly connected to the surface, a current transformer (10) is fixedly mounted on the front of the vacuum interrupter chamber (9), an isolation blade (11) is movably mounted on the front of the current transformer (10), a connector (12) is fixedly connected to the front end of the isolation blade (11), an insulating pull rod (13) is rotatably mounted in the middle of the isolation blade (11), a protective mechanism (14) is fixedly mounted on the bottom of the insulating pull rod (13), and a driving mechanism (15) is rotatably mounted on the top of the insulating pull rod (13).

2. An outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The protection mechanism (14) comprises a bottom plate (141), the edge of the bottom plate (141) is fixedly connected to a protection net (142), the inner wall of the protection net (142) is fixedly connected to a partition plate (143), the top end of the protection net (142) is fixedly connected to a top cover (144), a rotating ring (145) is rotatably mounted inside the top cover (144), and a fixed plate (146) is rotatably mounted inside the rotating ring (145).

3. An outdoor high-voltage vacuum circuit breaker according to claim 2, characterized in that: The driving mechanism (15) comprises a long sleeve (151), the top of the long sleeve (151) is fixedly connected to a plurality of upper driving leaves (152), the bottom of the long sleeve (151) is fixedly connected to a large gear (153), the middle of the long sleeve (151) is movably sleeved with a short sleeve (154), the top of the short sleeve (154) is fixedly connected to a plurality of lower driving leaves (155), the lower end of the short sleeve (154) is rotatably mounted with a plurality of long rods (156), the top of the long rods (156) is fixedly connected to a small gear (158), the middle of the long rods (156) is fixedly connected to a soft brush (157), and the bottom ends of the plurality of long rods (156) are rotatably mounted with I-shaped pieces (159).

4. An outdoor high-voltage vacuum circuit breaker according to claim 3, characterized in that: The isolation linkage (2) is fixedly connected to the right end of the rotating rod (6), and the bottom end of the insulating pull rod (13) is rotatably connected to the connecting sleeve (7).

5. An outdoor high-voltage vacuum circuit breaker according to claim 4, characterized in that: The bottom plate (141) and the fixing plate (146) are both fixedly connected to the insulating pull rod (13), and through holes are provided on the surfaces of the bottom plate (141) and the partition plate (143).

6. An outdoor high-voltage vacuum circuit breaker according to claim 5, characterized in that: The long sleeve (151) and the I-shaped piece (159) are both movably sleeved with the insulating pull rod (13), and the large gear (153) is meshed with a plurality of small gears (158).

7. An outdoor high-voltage vacuum circuit breaker according to claim 6, characterized in that: The lower end of the short sleeve (154) is rotatably connected to the top cover (144), the rotating ring (145) is located between the pinion (158) and the soft brush (157) and is rotatably connected to the long rod (156), and the middle portion of the I-shaped piece (159) is rotatably connected to the partition (143).

8. An outdoor high-voltage vacuum circuit breaker according to claim 7, characterized in that: The upper surface and the lower surface of the I-shaped piece (159) are both provided with a plurality of arc-shaped holes arranged equidistantly around the circumference, the upper arc-shaped holes and the lower arc-shaped holes are mutually offset, and the I-shaped piece (159) is in contact with the bottom plate (141) and the partition plate (143).

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