Drop type recloser

Abstract

The invention discloses a drop type recloser which comprises a recloser body, an inclined insulator and a tripping assembly. The tripping assembly drives the actuating rod to break away from the rotating block through the bimetallic strip or the opening coil, and insulator falling is achieved. The controller integrates the current transformer to take electricity, and the permanent magnet drives the vacuum tube to open and close. The mode switching assembly is linked with the inner rocker arm through the outer rocker arm to control the microswitch, and an automatic reclosing (AUTO) mode or a direct drop (DIR) mode is switched. The dual-release redundant power supply has the functions of dual-release redundancy, mode switching and high-stability power taking.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly relates to a drop-type reclosing switch. Background Art

[0002] Traditional drop-type reclosing switches mostly adopt mechanical tripping structures, and the opening and closing operations rely on manual or single driving methods, lacking flexibility. In the prior art, the reclosing switch lacks the function of quickly switching between automatic opening and closing and manual modes, and it is difficult to achieve precise actions during overcurrent protection. In addition, the traditional structure has defects in insulator drop control, tripping stability, and power-taking methods. The present invention solves the above problems by optimizing the tripping components, introducing a mode switching mechanism, and an intelligent control module. Summary of the Invention

[0003] The purpose of the present invention is to provide a drop-type reclosing switch to solve the above technical problems.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A drop-type reclosing switch includes a reclosing switch and an insulator arranged on one side of the reclosing switch. The insulator is inclined. Upper and lower contact heads are respectively arranged at both ends of the insulator. The upper contact head contacts or separates from a moving contact formed on the reclosing switch. The lower contact head is adapted with a tripping component. The tripping component includes a bimetal, a tripping coil, a tripping plate, a fixed block, an actuating rod, and a rotating block. A suspension ring is arranged on the rotating block. The lower contact head is of a bent structure and forms a placement housing. Notch openings are arranged on both sides of the placement housing. An installation post placed in the notch openings is formed on the side wall of the rotating block. One end of the actuating rod is hinged to the tripping plate. The tripping plate is connected to the output end of the tripping coil. During closing, the actuating rod passes through the fixed block and is mutually limited with the rotating block. When tripping, the actuating rod and the rotating block are released from the limit, and the rotating block rotates to achieve dropping. Wherein, support seats are arranged on both sides of the rotating block. The support seats are located on the outer wall of the reclosing switch and are connected to the rotating block. Short shafts are arranged on both sides of the support seats. A shaft hole is arranged on the rotating block. The rotating block and the support seats achieve rotation through the cooperation of the short shafts and the shaft holes.

[0005] The present invention is further configured such that when tripping, the bimetal or the tripping coil drives the actuating rod to release the limit with the rotating block. When the bimetal deforms, it acts on the actuating rod, causing the actuating rod to rotate away from the rotating block around its fixed point on the release plate. At this time, the rotating block rotates around the center of its shaft hole, thereby driving the mounting housing to rotate and then driving the insulator to drop; when the tripping coil is energized, the output end of the tripping coil acts to drive the actuating rod to move upward. At this time, the rotating block rotates around the center of its shaft hole, thereby driving the mounting housing to rotate and then driving the insulator to drop. A abutting portion is formed at the inner bottom of the mounting housing where the rotating block is located, and an abutting block is provided on one side of the notch of the mounting housing. When the rotating block rotates, the rotating block acts on the mounting housing to rotate synchronously with the rotating block, so that the insulator drops.

[0006] The present invention is further configured such that the recloser includes a housing, and a controller, a current transformer for power taking and sampling, a permanent magnet, and a vacuum tube are arranged inside the housing. The permanent magnet is arranged at the bottom of the housing, capacitors and a battery are distributed around the permanent magnet, the permanent magnet is connected to the vacuum tube through a connecting rod, the current transformer is sleeved on the vacuum tube, the connecting rod is connected to a bracket at a position below the vacuum tube, a conductive plate is arranged on the bracket, the conductive plate is connected to the bimetal, the conductive plate is arranged in an insulating support, and a connecting column is arranged on the insulating support for supporting the current transformer.

[0007] The present invention is further configured such that an upper spring seat and a lower spring seat are arranged on the connecting rod, and a return spring is arranged between the upper spring seat and the lower spring seat.

[0008] The present invention is further configured such that an actuating rod, a spring piece, a fastening plate and a buckle are arranged between the vacuum tube and the upper contact head. One end of the spring piece is connected to the upper contact head, and an actuating spring is arranged between the spring piece and the upper contact head. The fastening plate is clamped with the buckle, and one end of the fastening plate is connected to the spring piece.

[0009] The present invention is further configured such that a mode switching component is arranged below the recloser, and the mode switching component is used to switch between the AUTO mode and the DIR mode. The AUTO mode is to automatically trip after a fault and then close after a period of time; the DIR mode is to drop after tripping.

[0010] The present invention is further configured such that the mode switching component includes an outer rocker arm disposed outside the recloser and an inner rocker arm disposed inside the recloser. The outer rocker arm and the inner rocker arm are connected by a linkage shaft. The inner rocker arm is adapted with a microswitch. A first fixing column is formed at the bottom of the inner rocker arm. A deformable member is sleeved on the first fixing column. A second fixing column is provided on the side wall inside the recloser. The deformable member includes a fixing ring sleeved on the first fixing column and the second fixing column. A stretching ring is provided between the fixing rings. The stretching ring is stretched or reset when the inner rocker arm rotates. During the rotation of the inner rocker arm, it will contact or disconnect from the microswitch, thereby switching between the AUTO mode and the DIR mode. The microswitch is connected to a controller, and the controller is used to receive the conduction signal of the microswitch.

[0011] The present invention is further configured such that the current transformer takes power and samples, and charges the battery and the capacitor through the controller.

[0012] The present invention is further configured such that the elastic piece is made of copper phosphorus material.

[0013] The present invention is further configured such that the outer shell is an aluminum shell.

[0014] The beneficial effects of the present invention: The present invention includes a recloser body and an inclined insulator. Upper and lower contact heads are provided at both ends of the insulator. It consists of a bimetallic strip, a tripping coil, a release plate, a fixed block, an actuating rod and a rotating block. The rotating block is matched with the notch of the lower contact head through a mounting post. During closing, the actuating rod is limited with the rotating block, and during tripping, the limit is released to make the insulator fall. Through the linkage of the outer rocker arm and the inner rocker arm, the microswitch is controlled to trigger the AUTO mode (automatic reclosing) or the DIR mode (direct falling). When the tripping coil is energized or the bimetallic strip is deformed by heat, tripping can be triggered, improving the redundancy of fault response.

[0015] The current transformer is integrated in the vacuum tube to supply power to the controller, the battery and the capacitor, realizing self-sustaining energy management. The return spring on the connecting rod ensures quick reset after tripping. The cooperation between the vacuum tube and the permanent magnet improves the closing stability. The elastic piece is made of copper phosphorus material to enhance conductivity and elasticity, and the outer shell is an aluminum shell to reduce weight. The conductive plate is isolated by an insulating support to avoid the risk of electric leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 is a perspective view of an embodiment of the present invention.

[0017] Figure 2 is a structural schematic diagram of an embodiment of the present invention.

[0018] Figure 3 This is a schematic structural diagram of an embodiment of the present invention.

[0019] Figure 4 This is a partially enlarged view of the connecting rod part of an embodiment of the present invention.

[0020] Figure 5 This is a partially enlarged view of the inner rocker arm part of an embodiment of the present invention.

[0021] Reference numerals: 10, recloser; 101, housing; 102, controller; 103, current transformer; 104, permanent magnet; 105, vacuum tube; 106, capacitor; 107, battery; 108, bracket; 109, conductive plate; 110, connecting column; 111, connecting rod; 112, upper spring seat; 113, lower spring seat; 114, operating rod; 115, elastic piece; 116, fastening plate; 117, buckle; 20, insulator; 201, upper contact head; 202, lower contact head; 30, tripping assembly; 301, bimetallic strip; 302, opening coil; 303, tripping plate; 304, fixed block; 305, acting rod; 306, rotating block; 307, placement housing; 308, abutting rod; 309, abutting block; 310, notch; 311, mounting post; 312, support seat; 40, mode switching assembly; 401, outer rocker arm; 402, inner rocker arm; 403, microswitch; 404, linkage shaft; 405, deformable member; 406, tension ring; 407, fixed ring; 408, first fixing post; 409, second fixing post; Detailed implementation manners

[0022] The following will cooperate with the drawings and embodiments to elaborate in detail on the implementation manners of the present application, so as to fully understand the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects and implement accordingly.

[0023] As Figures 1 - 5As shown in the figure, the present invention is a drop-out recloser 10, which includes a recloser 10 and an insulator 20 disposed on one side of the recloser 10. The insulator 20 is inclined. Upper contact heads 201 and lower contact heads 202 are respectively disposed at both ends of the insulator 20. The upper contact heads 201 are in contact with or separated from moving contact heads formed on the recloser 10. The lower contact heads 202 are adapted to a tripping assembly 30. The tripping assembly 30 includes a bimetallic strip 301, a tripping coil 302, a tripping plate 303, a fixing block 304, an actuating rod 305 and a rotating block 306. A lifting ring is disposed on the rotating block 306. The lower contact heads 202 are in a bent structure and form a placement housing 307. Notches 310 are disposed on both sides of the placement housing 307. Mounting posts 311 placed in the notches 310 are formed on the side wall of the rotating block 306. One end of the actuating rod 305 is hinged to the tripping plate 303. The tripping plate 303 is connected to the output end of the tripping coil 302. When closing, the actuating rod 305 passes through the fixing block 304 and is mutually limited with the rotating block 306. When tripping, the actuating rod 305 and the rotating block 306 are released from the limit, and the rotating block 306 rotates to achieve a drop. Wherein, support seats 312 are disposed on both sides of the rotating block 306. The support seats 312 are located on the outer wall of the recloser 10 and are connected to the rotating block 306. Short shafts are disposed on both sides of the support seats 312. A shaft hole is disposed on the rotating block 306. The rotating block 306 and the support seats 312 achieve rotation through the cooperation of the short shafts and the shaft hole.

[0024] In the present invention, when tripping, the bimetallic strip 301 or the tripping coil 302 drives the actuating rod 305 and the rotating block 306 to be released from the limit. When the bimetallic strip 301 is deformed, it acts on the actuating rod 305, causing the actuating rod 305 to rotate away from the rotating block 306 around its fixed point on the tripping plate 303. At this time, the rotating block 306 rotates around the center of its shaft hole, thereby driving the placement housing 307 to rotate and then driving the insulator 20 to drop; when the tripping coil 302 is powered on, the output end of the tripping coil 302 acts to drive the actuating rod 305 to move upward. At this time, the rotating block 306 rotates around the center of its shaft hole, thereby driving the placement housing 307 to rotate and then driving the insulator 20 to drop. Wherein, an abutting portion is formed at the inner bottom of the placement housing 307 where the rotating block 306 is located. An abutting block is disposed on one side of the placement housing 307 at the notch 310. When the rotating block 306 rotates, the rotating block 306 acts on the placement housing 307 to rotate synchronously with the rotating block 306, so that the insulator 20 drops.

[0025] Among them, the recloser 10 includes a housing 101, and the housing 101 is an aluminum shell. Inside the housing 101, there are arranged a controller 102, a current transformer 103 for power taking and sampling, a permanent magnet 104, and a vacuum tube 105. The permanent magnet 104 is arranged at the bottom of the housing 101. Capacitors 106 and a battery 107 are distributed around the permanent magnet 104. The permanent magnet 104 is connected to the vacuum tube 105 through a connecting rod 111. The current transformer 103 is sleeved on the vacuum tube 105. The connecting rod 111 is connected to a bracket 108 at a position below the vacuum tube 105. A conductive plate 109 is arranged on the bracket 108. The conductive plate 109 is connected to a bimetallic strip 301. The conductive plate 109 is arranged inside an insulating support. A connecting column 110 is arranged on the insulating support for supporting the current transformer 103.

[0026] Among them, an upper spring seat 112 and a lower spring seat 113 are arranged on the connecting rod 111, and a reset spring is arranged between the upper spring seat 112 and the lower spring seat 113.

[0027] Among them, an operating rod 114, a spring piece 115, a fastening plate 116 and a buckle 117 are arranged between the vacuum tube 105 and the upper contact 201. One end of the spring piece 115 is connected to the upper contact 201. An operating spring is arranged between the spring piece 115 and the upper contact 201. The fastening plate 116 is clamped with the buckle 117. One end of the fastening plate 116 is connected to the spring piece 115. The spring piece 115 is made of copper phosphorus material.

[0028] Among them, a mode switching component 40 is arranged below the recloser 10. The mode switching component 40 is used to switch between the AUTO mode and the DIR mode. In the AUTO mode, it automatically trips after a fault and then closes again after a period of time. In the DIR mode, it drops after tripping.

[0029] Among them, the mode switching component 40 includes an outer rocker arm 401 arranged outside the recloser 10 and an inner rocker arm 402 arranged inside the recloser 10. The outer rocker arm 401 and the inner rocker arm 402 are connected by a linkage shaft 404. The inner rocker arm 402 is adapted with a microswitch 403. A first fixing column is formed at the bottom of the inner rocker arm 402. A deformable member 405 is sleeved on the first fixing column 408. A second fixing column 409 is arranged on the side wall inside the recloser 10. The deformable member 405 includes a fixing ring 407 sleeved on the first fixing column and the second fixing column. A stretching ring 406 is arranged between the fixing rings 407. The stretching ring 406 is stretched or reset when the inner rocker arm 402 rotates. During the rotation of the inner rocker arm 402, it will contact or disconnect from the microswitch 403, thereby switching between the AUTO mode and the DIR mode. The microswitch 403 is connected to the controller 102, and the controller 102 is used to receive the conduction signal of the microswitch 403. Through the linkage of the outer rocker arm 401 and the inner rocker arm 402, the microswitch 403 is controlled to trigger the AUTO mode (automatic reclosing) or the DIR mode (direct dropout). When the opening coil 302 is powered on or the bimetal 301 is deformed by heat, the tripping can be triggered, improving the redundancy of the fault response.

[0030] The present invention does not have a grounding point, so a current transformer is used for power taking and sampling. After power taking and sampling, the controller charges the battery and the capacitor. When operating, the controller first drives the permanent magnet to act. According to different modes, if a dropout is required, the opening coil is driven, and after the dropout, the closing is awaited for manual reset. Additionally, after being unable to obtain power from the power-taking current transformer for a long time, the battery discharge function is actively disconnected until the power is restored.

[0031] The bimetal tripping part: This is a component designed to ensure one-time protection in the case of electrical part failures or when just powered on and the battery is out of power. After this part acts, the action rod connected to the vacuum tube above needs to be replaced, and the double thermal metal sheet can continue to be used only after being reset by heat energy release.

[0032] Certain terms are used in the specification and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0033] The foregoing description has shown and described several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A drop-out recloser, characterized in that, It includes a recloser and an insulator arranged on one side of the recloser. The insulator is arranged obliquely. Upper and lower contact heads are respectively arranged at both ends of the insulator. The upper contact head contacts or separates from a moving contact formed on the recloser. The lower contact head is fitted with a tripping component. The tripping component includes a bimetal, a shunt coil, a release plate, a fixing block, an actuating rod, and a rotating block. A suspension ring is arranged on the rotating block. The lower contact head is of a bent structure and forms a placement housing. Notch openings are arranged on both sides of the placement housing. Mounting posts placed in the notch openings are formed on the side wall of the rotating block. One end of the actuating rod is hinged to the release plate. The release plate is connected to the output end of the shunt coil. When closing, the actuating rod passes through the fixing block and is mutually limited with the rotating block. When tripping, the actuating rod and the rotating block are released from the limit, and the rotating block rotates to achieve dropping. Supporting seats are arranged on both sides of the rotating block. The supporting seats are located on the outer wall of the recloser and are connected to the rotating block. Short shafts are arranged on both sides of the supporting seats. A shaft hole is arranged on the rotating block. The rotating block and the supporting seats are rotated through the cooperation of the short shafts and the shaft hole.

2. The drop-out recloser according to claim 1, characterized in that, When tripping, the actuating rod and the rotating block are released from the limit by driving of the bimetal or the shunt coil. When the bimetal deforms, it acts on the actuating rod, causing the actuating rod to rotate away from the rotating block around its fixed point on the release plate. At this time, the rotating block rotates around the center of its shaft hole, thereby driving the placement housing to rotate and then driving the insulator to drop. When the shunt coil is energized, the output end of the shunt coil acts to drive the actuating rod to move upward. At this time, the rotating block rotates around the center of its shaft hole, thereby driving the placement housing to rotate and then driving the insulator to drop. A abutting portion is formed at the inner bottom of the placement housing where the rotating block is located. An abutting block is arranged on one side of the notch opening of the placement housing. When the rotating block rotates, the rotating block acts on the placement housing to rotate synchronously with it, so that the insulator drops.

3. The drop-out recloser according to claim 2, characterized in that, The recloser includes a housing. A controller, a current transformer for power taking and sampling, a permanent magnet, and a vacuum tube are arranged inside the housing. The permanent magnet is arranged at the bottom of the housing. Capacitors and a battery are distributed around the permanent magnet. The permanent magnet is connected to the vacuum tube through a connecting rod. The current transformer is sleeved on the vacuum tube. A bracket is connected to the connecting rod at a position below the vacuum tube. A conductive plate is arranged on the bracket. The conductive plate is connected to the bimetal. The conductive plate is arranged in an insulating support. A connecting column is arranged on the insulating support for supporting the current transformer.

4. The drop-out recloser according to claim 3, characterized in that, Upper and lower spring seats are arranged on the connecting rod. A return spring is arranged between the upper and lower spring seats.

5. A drop-out recloser according to claim 1, characterized in that, An actuating rod, a spring piece, a fastening plate, and a buckle are arranged between the vacuum tube and the upper contact head. One end of the spring piece is connected to the upper contact head. An actuating spring is arranged between the spring piece and the upper contact head. The fastening plate is clamped with the buckle. One end of the fastening plate is connected to the spring piece.

6. A drop-out recloser according to claim 1, characterized in that, A mode switching component is arranged below the recloser. The mode switching component is used to switch between AUTO mode and DIR mode. In AUTO mode, the recloser will trip automatically when a fault occurs and then close again after a period of time. In DIR mode, it will drop after tripping.

7. A drop-out recloser according to claim 6, characterized in that, The mode switching component includes an outer rocker arm arranged outside the recloser and an inner rocker arm arranged inside the recloser. The outer rocker arm and the inner rocker arm are connected by a linkage shaft. The inner rocker arm is fitted with a microswitch. A first fixing column is formed at the bottom of the inner rocker arm. A deformable member is sleeved on the first fixing column. A second fixing column is arranged on the side wall inside the recloser. The deformable member includes a fixing ring sleeved on the first fixing column and the second fixing column. A stretching ring is arranged between the fixing rings. The stretching ring is stretched or reset when the inner rocker arm rotates. During the rotation of the inner rocker arm, it will contact or disconnect from the microswitch, thereby switching between AUTO mode and DIR mode. The microswitch is connected to a controller, and the controller is used to receive the conduction signal of the microswitch.

8. The drop-out recloser according to claim 3, characterized in that, The current transformer is used for power taking and sampling, and charges the battery and the capacitor through the controller.

9. The drop-out recloser according to claim 1, characterized in that, The shrapnel is made of copper phosphorus material.

10. A drop-out recloser according to claim 3, characterized in that, The housing is an aluminum shell.

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