An outdoor high-voltage vacuum circuit breaker

Abstract

The present invention belongs to the technical field of circuit breakers, and discloses an outdoor high-voltage vacuum circuit breaker, including: an insulating pull rod, a protection mechanism is fixedly installed at the bottom of the insulating pull rod, and a driving mechanism is rotatably installed at the top of the insulating pull rod. The protection mechanism includes a bottom plate, a protection net is fixedly connected to the edge of the bottom plate, a partition plate is fixedly connected to the inner wall of the protection net, and a top cover is fixedly connected to the top end of the protection net. By installing the insulating pull rod inside the protection net, the sand and dust in the air are blocked on the surface of the protection net and cannot hit the insulating pull rod, thus avoiding the continuous friction of fine particles on the surface of the insulating pull rod and causing damage to the insulating pull rod. At the same time, the rotating soft brush will also clean the protection net, thus avoiding the blockage of the mesh holes of the protection net and preventing the wind from blowing to the surface of the insulating pull rod, resulting in a phenomenon of high temperature of the insulating pull rod.

Description

Technical Field

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

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

[0003] An outdoor high-voltage vacuum circuit breaker is usually installed on an outdoor electric pole or a special bracket. However, in areas with more sand and dust, the continuous friction of fine particles on the surface of the insulating pull rod will cause damage to the insulating material, reduce its thickness and leave tiny defects, which become the starting point of partial discharge and seriously affect the service life of the insulating pull rod. Secondly, dust and dirt will deposit on the surface of the insulating pull rod. When the leakage current passes through the deposit, it will cause local heating and damage the insulating material. Summary of the Invention

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

[0005] To achieve the above object, this application adopts the following technical solution: An outdoor high-voltage vacuum circuit breaker includes a base. An isolation interlock is installed inside the base. An isolation mounting frame is fixedly connected to the front of the base. A plurality of insulating columns are fixedly installed in the front of the isolation mounting frame. An isolation knife seat is fixedly connected to the upper end of the insulating column. A rotating rod is rotatably installed in the middle of the isolation mounting frame. A plurality of connecting sleeves are fixedly installed in the middle of the rotating rod. A closing and opening handle is fixedly connected to the left end of the rotating rod. A plurality of vacuum interrupters are fixedly connected to the upper surface of the base. A current transformer is fixedly installed on the front of the vacuum interrupter. An isolation blade is movably installed on the front of the current transformer. A connecting head is fixedly connected to the front end of the isolation blade. An insulating pull rod is rotatably installed in the middle of the isolation blade. A protection mechanism is fixedly installed at the bottom of the insulating pull rod. A driving mechanism is rotatably installed at the top of the insulating pull rod.

[0006] Preferably, the protection mechanism includes a bottom plate. A protection net is fixedly connected to the edge of the bottom plate. A partition is fixedly connected to the inner wall of the protection net. A top cover is fixedly connected to the top of the protection net. A rotating ring is rotatably installed inside the top cover. A fixing plate is rotatably installed inside the rotating ring.

[0007] Preferably, the driving mechanism includes a long sleeve. A plurality of upper driving blades are fixedly connected to the top of the long sleeve. A large gear is fixedly connected to the bottom of the long sleeve. A short sleeve is movably sleeved in the middle of the long sleeve. A plurality of lower driving blades are fixedly connected to the top of the short sleeve. A plurality of long rods are rotatably installed at the lower end of the short sleeve. A small gear is fixedly connected to the top of the long rod. A soft brush is fixedly connected to the middle of the long rod. The bottom ends of the plurality of long rods are rotatably installed with a shaped member.

[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, both the bottom plate and the fixing plate are fixedly connected to the insulating pull rod, and through holes are formed on the surfaces of both the bottom plate and the partition plate.

[0010] Preferably, both the long sleeve and the shaped member are movably sleeved on the insulating pull rod, and the large gear meshes with a plurality of 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. The middle of the shaped member is rotatably connected to the partition plate.

[0012] Preferably, a plurality of arc-shaped holes arranged at equal circumferential intervals are formed on both the upper surface and the lower surface of the shaped member. The upper arc-shaped holes and the lower arc-shaped holes are mutually offset. The shaped member is in contact with both the bottom plate and the partition plate.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By installing the insulating pull rod inside the protective net, the present invention blocks the sand and wind in the air on the surface of the protective net, preventing them from hitting the insulating pull rod, thus avoiding the continuous friction of fine particles on the surface of the insulating pull rod and causing damage to the insulating pull rod. At the same time, the rotating soft brush will also clean the protective net, thus preventing the mesh holes of the protective net from being blocked and the wind from blowing onto the surface of the insulating pull rod, resulting in a phenomenon where the temperature of the insulating pull rod is relatively high.

[0015] 2. The present invention drives the soft brush to rotate self and rotate around the axis by the upper driving blade and the lower driving blade respectively, so that the rotating soft brush cleans the mesh holes of the protective net and the surface of the insulating pull rod. The dust and dirt removed will fall on the upper surface of the shaped member, and are swept into the upper arc-shaped holes and rotate with the arc-shaped holes due to the rotation of the soft brush. When the upper arc-shaped holes are communicated with the through holes of the partition plate, the dust and dirt will fall on the bottom upper surface of the shaped member. As the shaped member continues to rotate, the dust and dirt pass through the through holes of the partition plate and fall outside, thus solving the problem that the existing local heating caused by the deposition of dust and dirt damages the insulating material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which form a part of the specification, illustrate the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0017] With reference to the accompanying drawings and according to the following detailed description, the present disclosure can be more clearly understood, wherein:

[0018] Figure 1 is a schematic structural view of the appearance of the present invention;

[0019] Figure 2 is a semi-sectional schematic view of the protective net structure of the present invention;

[0020] Figure 3 is a schematic view of the driving mechanism of the present invention;

[0021] Figure 4 is for the present invention Figure 3 The enlarged schematic view at position A in;

[0022] Figure 5 is a schematic view of the I-shaped part structure in the present invention.

[0023] Wherein: 1, base; 2, isolation interlock; 3, isolation mounting bracket; 4, insulating column; 5, isolation knife holder; 6, rotating rod; 7, connecting sleeve; 8, opening and closing handle; 9, vacuum arc extinguishing chamber; 10, current transformer; 11, isolation blade; 12, connector; 13, insulating pull rod; 14, protection mechanism; 141, bottom plate; 142, protective net; 143, partition board; 144, top cover; 145, rotating ring; 146, fixing 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 implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] Please refer to Figures 1-5An embodiment of the present invention provides an outdoor high-voltage vacuum circuit breaker, which includes a base 1. An isolation interlock 2 is installed inside the base 1. The front of the base 1 is fixedly connected with an isolation mounting frame 3. A plurality of insulating columns 4 are fixedly installed at the front of the isolation mounting frame 3. The upper ends of the insulating columns 4 are fixedly connected with an isolation knife seat 5. 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. The left end of the rotating rod 6 is fixedly connected with a closing and opening handle 8. 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 isolation blade 11 is movably installed on the front of the current transformer 10. The front end of the isolation blade 11 is fixedly connected with a connection head 12. An insulating pull rod 13 is rotatably installed in the middle of the isolation blade 11. A protection mechanism 14 is fixedly installed at the bottom of the insulating pull rod 13. A driving mechanism 15 is rotatably installed at the top of the insulating pull rod 13. The protection mechanism 14 includes a bottom plate 141. A protection net 142 is fixedly connected to the edge of the bottom plate 141. A partition plate 143 is fixedly connected to the inner wall of the protection net 142. A top cover 144 is fixedly connected to the top of the protection net 142. A rotating ring 145 is rotatably installed inside the top cover 144. A fixing plate 146 is rotatably installed inside the rotating ring 145. Its function is that by installing the insulating pull rod 13 inside the protection net 142, the sand and wind in the air are blocked on the surface of the protection net 142 and cannot hit the insulating pull rod 13, thereby avoiding the continuous friction of fine particles on the surface of the insulating pull rod 13 and causing damage to the insulating pull rod 13. At the same time, the rotating soft brush 157 will also clean the protection net 142, thereby avoiding the blockage of the mesh holes of the protection net 142 and preventing the wind from blowing to the surface of the insulating pull rod 13, resulting in a phenomenon that the temperature of the insulating pull rod 13 is relatively high.

[0026] Among them, the driving mechanism 15 includes a long sleeve 151. A plurality of upper driving blades 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 blades 155 are fixedly connected to the top of the short sleeve 154. A plurality of long rods 156 are rotatably installed at 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. The bottom ends of the plurality of long rods 156 are rotatably installed with a shaped part 159. Its function is that the wind will blow the plurality of 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 engaged small gear 158 to rotate. The small gear 158 will drive the soft brush 157 to rotate by itself through the long rod 156. Under the blowing of the wind, the lower driving blades 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 plurality of long rods 156 and the soft brush 157 to revolve.

[0027] 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 fixing plate 146 are both fixedly connected to the insulating pull rod 13. Through holes are provided on the surfaces of the bottom plate 141 and the partition plate 143. The long sleeve 151 and the I-shaped part 159 are both movably sleeved on the insulating pull rod 13. The large gear 153 meshes with a plurality of small gears 158. 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 part 159 is rotatably connected to the partition plate 143. A plurality of arc-shaped holes arranged at equal circumferential intervals are provided on both the upper surface and the lower surface of the I-shaped part 159. The upper arc-shaped holes and the lower arc-shaped holes are mutually offset. The I-shaped part 159 is in contact with both the bottom plate 141 and the partition plate 143. Its function is that the upper driving blade 152 drives the soft brush 157 to rotate self, and the lower driving blade 155 drives the soft brush 157 to rotate around the center, so that the rotating soft brush 157 cleans the mesh holes of the protective net 142 and the surface of the insulating pull rod 13. The dust and dirt cleaned will fall on the upper surface of the I-shaped part 159. Due to the rotation of the soft brush 157, they are swept into the upper arc-shaped holes and rotate along with the arc-shaped holes. When the upper arc-shaped holes are communicated with the through holes of the partition plate 143, the dust and dirt will fall on the upper surface of the bottom of the I-shaped part 159. At this time, the lower arc-shaped holes are not communicated with the through holes of the bottom plate 141. As the I-shaped part 159 continues to rotate, the upper arc-shaped holes are no longer communicated with the through holes of the partition plate 143, while the lower arc-shaped holes are communicated with the through holes of the bottom plate 141, and the dust and dirt pass through the through holes of the partition plate 143 and fall outside, thus solving the problem that the existing local heating caused by the deposition of dust and dirt causes damage to the insulating material.

[0028] Working principle:

[0029] The sand and dust in the air blown onto the surface of the protective net 142 will be blocked on the surface, so that it cannot hit the insulating pull rod 13, avoiding the continuous friction of fine particles on the surface of the insulating pull rod 13. At the same time, the wind will blow the plurality of 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 gears 158 to rotate. The small gears 158 will drive the soft brush 157 to rotate self through the long rod 156. The rotating soft brush 157 will clean the dust and dirt contaminated 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 holes of the protective net 142 from being blocked, so as to avoid the wind not being able to blow to the surface of the insulating pull rod 13 and affecting the heat dissipation of the insulating pull rod 13;

[0030] Under the action of the wind, the lower drive blade 155 will drive the short sleeve 154 to rotate in the opposite direction to the rotation direction of the long sleeve 151. The short sleeve 154 will drive a plurality of long rods 156 to revolve, thereby driving the self-rotating soft brush 157 to further clean the mesh holes of the protective net 142 and the surface of the insulating pull rod 13, avoiding the deposition of dust and dirt on the surface of the insulating pull rod 13 to form a conductive or semi-conductive film. This film may cause an increase in leakage current, thereby reducing the insulation resistance of the insulating pull rod 13. In severe cases, it may even cause a flashover phenomenon. When the leakage current passes through the deposit, it will cause local heating. This thermal effect will further damage the insulating material, exacerbate the aging process, and may lead to a decrease in the mechanical strength of the insulating pull rod 13; the cleaned dust and dirt will fall on the upper surface of the I-shaped part 159 and be swept into the upper arc hole and follow the rotation of the arc hole due to the rotation of the soft brush 157. When the upper arc hole communicates with the through hole of the partition plate 143, the dust and dirt will fall on the bottom upper surface of the I-shaped part 159. At this time, the lower arc hole does not communicate with the through hole of the bottom plate 141. As the I-shaped part 159 continues to rotate, the upper arc hole no longer communicates with the through hole of the partition plate 143, while the lower arc hole communicates with the through hole of the bottom plate 141, and the dust and dirt pass through the through hole of the partition plate 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 on 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); The protection mechanism (14) comprises a bottom plate (141), a protection 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 protection net (142), a top cover (144) is fixedly connected to the top of the protection net (142), 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); 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 soft brush (157), the middle of the long rods (156) is fixedly connected to a small gear (158), and the bottom ends of the plurality of long rods (156) are rotatably mounted with a workpiece (159); 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).

2. An outdoor high-voltage vacuum circuit breaker according to claim 1, 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).

3. An outdoor high-voltage vacuum circuit breaker according to claim 2, 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).

4. An outdoor high-voltage vacuum circuit breaker according to claim 3, 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).

5. An outdoor high-voltage vacuum circuit breaker according to claim 4, 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).

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