A disconnector device for reliable closing operation

Abstract

The utility model relates to electric power application equipment technical field provides a reliable switching -on operation's isolating switch device, include: the isolation insulating casing, the isolation static contact, the isolation movable contact, the isolation contact seat, the first conducting plate, the second conducting plate, the insulating pull rod, the lower end of isolation static contact is provided with the gate slot, and the slot of gate slot is provided with the chamfer, and the isolation contact seat is provided with the guide hole, the isolation movable contact and guide hole sliding connection, the lower end of isolation movable contact and the upper end of insulating pull rod fixed connection, and the upper end of isolation movable contact is provided with vertical strip shape mouth, and a plurality of vertical strip shape mouths are evenly spaced arrangement around the centre axis of isolation movable contact. Advantages: the opening and closing action between isolation static contact and isolation movable contact is in the isolation insulating casing, improves stability and safety, and the staff feels the initial greater resistance after the resistance is obviously reduced in the closing operation process, is helpful to the operator to judge the closing success, improves the reliability of closing operation.

Description

Technical Field

[0001] This utility model relates to the field of power application equipment technology, and specifically to a disconnecting switch device with reliable closing operation. Background Technology

[0002] A pole-mounted circuit breaker (POP) is a high-voltage electrical device installed and operated on a utility pole, primarily used in outdoor power distribution systems. POP breakers control and protect power distribution networks, automatically disconnecting the circuit in case of faults, such as overloads or short circuits. Equipped with a vacuum interrupter, it safely disconnects the circuit when current flows through, preventing arcing damage to equipment or fires. The vacuum interrupter is also known as a vacuum switch tube. The circuit breaker's operating switch allows operators to manually open and close the vacuum interrupter. Typically, pole-mounted circuit breakers are used in conjunction with disconnecting switches. Disconnecting switches are manually operated and primarily used for circuit isolation and maintenance; they provide clear disconnection indicators to ensure safety during maintenance.

[0003] Traditional pole-mounted circuit breakers use disconnectors with knife-switch structures, which are exposed and easily accumulate debris. This makes the opening and closing actions of the disconnector susceptible to interference, resulting in lower stability and safety. For example, utility model patent document CN218866977U discloses a novel interlocking structure ZW32-12 pole-mounted vacuum circuit breaker integrated disconnector, comprising a base, operating shaft, crank arm, insulating pull rod, insulating support, moving contact, stationary contact, and conductive clamp. The base is fixed to one side of the circuit breaker housing, the insulating support is fixedly mounted on the base, the stationary contact is fixedly mounted on the upper end of the insulating support, one end of the moving contact is connected to the circuit breaker output terminal via the conductive clamp, and the other end engages with the stationary contact. One end of the insulating pull rod is connected to the moving contact, and the other end is connected to the crank arm on the operating shaft. The operating shaft has a handle for opening and closing, which is operated manually to achieve opening and closing. The disconnecting switch in this patent document is a knife switch structure, which is exposed.

[0004] Therefore, in order to avoid interference from debris during the opening and closing operations of the disconnecting switch and to improve its stability and safety, there is an urgent need in this technical field for a disconnecting switch device with reliable closing operation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a disconnecting switch device with reliable closing operation.

[0006] The technical solution of this utility model is achieved as follows: a reliable closing operation disconnecting switch device, comprising: Insulating housing, stationary contact, moving contact, contact seat, first conductive plate, second conductive plate, insulating pull rod; The isolating stationary contact is fixedly connected to the top of the isolating insulating shell. The lower end of the isolating stationary contact is provided with a gate groove, and the opening of the gate groove is provided with a chamfer. The upper end of the isolating stationary contact is connected to the first terminal block through the first conductive plate. The isolating contact seat is fixedly connected to the interior of the isolating insulating shell. The isolating contact seat is provided with a guide hole. The surface of the isolating insulating shell is provided with a second wiring block. The isolating contact seat and the second wiring block are connected through the second conductive plate. The isolating moving contact is slidably connected to the guide hole, and the lower end of the isolating moving contact is fixedly connected to the upper end of the insulating pull rod. The upper end of the isolating moving contact is provided with a vertical strip-shaped opening. Multiple vertical strip-shaped openings are evenly spaced around the central axis of the isolating moving contact. When the isolating moving contact and the isolating stationary contact are closed, the upper end of the isolating moving contact first contacts the chamfer, and the upper end of the isolating moving contact is squeezed to produce a convergence deformation. Then the upper end of the moving contact is inserted into the gate slot.

[0007] Furthermore, it also includes: a control box, wherein the isolation insulating housing is fixedly connected to the control box, the bottom of the isolation insulating housing is connected to the control box, the control box is provided with an isolation operation spindle, a crank plate, and a connecting plate inside, the isolation operation spindle is rotatably connected to the control box, the left end of the crank plate is fixedly connected to the isolation operation spindle, the right end of the crank plate is hinged to the lower end of the connecting plate, and the upper end of the connecting plate is hinged to the lower end of the insulating pull rod.

[0008] Furthermore, the isolating contact seat is a split-type isolating contact seat, including a guide tube, a fixing plate, a sealing seat, and a spring contact finger. One end of the fixing plate is disposed between the guide tube and the sealing seat, and the other end of the fixing plate is provided with a mounting hole. The mounting hole is locked to the isolating insulating housing by screws. The guide tube is located below the sealing seat. The sealing seat has an annular groove inside, and the spring contact finger is installed in the annular groove. The isolating moving contact passes through the guide tube and the sealing seat. The other end of the fixing plate is also connected to the second wiring block through the second conductive plate.

[0009] Furthermore, it also includes: an isolation operation handle is provided on the outside of the control box, the control box is provided with a rotating hole, the isolation operation handle passes through the rotating hole and is fixedly connected to the isolation operation spindle.

[0010] Compared with the prior art, the beneficial effects or advantages of this utility model are as follows: The opening and closing actions between the isolating stationary contact and the isolating moving contact of the disconnecting switch device occur within the isolating insulating shell. The isolating moving contact moves linearly with the aid of the isolating contact seat. The structure is unique and ingenious. The isolating insulating shell plays a role in isolating external debris, preventing the opening and closing actions of the disconnecting switch from being interfered with by debris, and improving stability and safety. The isolating moving contact is driven by the isolating operation spindle. The upper end of the isolating moving contact is provided with a vertical strip-shaped opening. When it performs the closing action with the gate slot of the isolating stationary contact, the upper end of the isolating moving contact first contacts the chamfer of the gate slot. The upper end of the isolating moving contact is squeezed and deformed, and then the upper end of the isolating moving contact is inserted into the gate slot. During this process, the operator feels a large initial resistance, but the resistance decreases significantly afterward. This helps the operator to judge that the closing is successful and improves the reliability of the closing operation. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a three-dimensional schematic diagram of the structure of the disconnecting switch device for reliable closing operation according to this utility model.

[0013] Figure 2 This is a front plan view of the disconnecting switch device for reliable closing operation according to this utility model.

[0014] Figure 3 yes Figure 2 Top view.

[0015] Figure 4 yes Figure 2 The left view.

[0016] Figure 5 yes Figure 4 A cross-sectional view along the AA direction.

[0017] Figure 6 yes Figure 5 A schematic diagram of the insertion of the moving isolating contact into the slot of the stationary isolating contact.

[0018] Figure 7 This is a three-dimensional schematic diagram of the external structure of the isolation contact seat of this utility model.

[0019] Figure 8 This is a schematic cross-sectional view of the internal structure of the isolation contact seat of this utility model.

[0020] Figure 9 This is a schematic cross-sectional view of the connection between the isolating moving contact and the insulating pull rod of this utility model.

[0021] Reference numerals: Circuit breaker body 1; Control box 11; Isolation operation spindle 111; Turning plate 112; Connecting plate 113; Isolation operation handle 114; Vacuum interrupter 12; First terminal block 13; Isolation switch device 2; Isolation insulating housing 21; Observation window 211; Second terminal block 212; Isolation stationary contact 22; Gate slot 221; Chamfer 222; Isolation moving contact 23; Vertical strip opening 231; Isolation contact seat 24; Guide tube 241; Fixing plate 242; Sealing seat 243; Annular groove 2431; First conductive plate 25; Second conductive plate 26; Insulating pull rod 27. Detailed Implementation

[0022] This utility model provides a disconnecting switch device with reliable closing operation. The purpose is to protect the opening and closing actions of the disconnecting switch by placing it inside an insulating housing to effectively avoid interference from external debris; and to improve the reliability of closing by making improvements to the upper end of the moving contact.

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] See Figure 1 to Figure 9 The preferred embodiment of this utility model.

[0025] A reliable closing operation disconnector device, comprising: 21. Isolating insulating housing, 22. Isolating stationary contact, 23. Isolating moving contact, 24. Isolating contact seat, 25. First conductive plate, 26. Second conductive plate, 27. Insulating pull rod; The isolating stationary contact 22 is fixedly connected to the top of the isolating insulating housing 21. The lower end of the isolating stationary contact 22 is provided with a gate groove 221. The groove opening of the gate groove 221 is provided with a chamfer 222. The upper end of the isolating stationary contact 22 is connected to the first terminal block 13 through the first conductive plate 25. The isolating contact seat 24 is fixedly connected to the interior of the isolating insulating shell 21. The isolating contact seat 24 is provided with a guide hole. The surface of the isolating insulating shell 21 is provided with a second wiring block 212. The isolating contact seat 24 and the second wiring block 212 are connected through the second conductive plate 26. The isolating moving contact 23 is slidably connected to the guide hole, and the lower end of the isolating moving contact 23 is fixedly connected to the upper end of the insulating pull rod 27. The upper end of the isolating moving contact 23 is provided with a vertical strip opening 231. Multiple vertical strip openings 231 are evenly spaced around the central axis of the isolating moving contact 23. When the isolating moving contact 23 and the isolating stationary contact 22 are closed, the upper end of the isolating moving contact 23 first contacts the chamfer 222, and the upper end of the isolating moving contact 23 is squeezed to produce a convergence deformation. Then the upper end of the moving contact is inserted into the gate slot 221.

[0026] The beneficial effects or advantages of this utility model are as follows: The opening and closing actions between the isolating stationary contact 22 and the isolating moving contact 23 of the isolating switch device 2 occur within the isolating insulating shell 21. The isolating moving contact 23 moves linearly with the help of the isolating contact seat 24. The structure is unique and ingenious. The isolating insulating shell 21 plays a role in isolating external debris, avoiding interference from debris in the opening and closing actions of the isolating switch, and improving stability and safety. The isolating moving contact 23 is driven by the isolating operation spindle 111. The upper end of the isolating moving contact 23 is provided with a vertical strip-shaped opening 231. When it performs the closing action with the gate slot 221 of the isolating stationary contact 22, the upper end of the isolating moving contact 23 first contacts the chamfer 222 of the gate slot 221. The upper end of the isolating moving contact 23 is squeezed and deformed. The upper end of the isolating moving contact 23 then inserts into the gate slot 221. During this process, the operator feels a large initial resistance, but the resistance decreases significantly afterward. This helps the operator judge the closing success and improves the reliability of the closing operation.

[0027] Furthermore, it also includes: a control box 11, the isolation insulating housing 21 is fixedly connected to the control box 11, the bottom of the isolation insulating housing 21 is connected to the control box 11, the control box 11 is provided with an isolation operation spindle 111, a crank plate 112, and a connecting plate 113 inside, the isolation operation spindle 111 is rotatably connected to the control box 11, the left end of the crank plate 112 is fixedly connected to the isolation operation spindle 111, the right end of the crank plate 112 is hinged to the lower end of the connecting plate 113, and the upper end of the connecting plate 113 is hinged to the lower end of the insulating pull rod 27.

[0028] The beneficial effects of this technical solution are as follows: When the isolation operation spindle 111 rotates in the forward direction, the isolation moving contact 23 rises vertically and inserts into the gate slot 221 of the isolation stationary contact 22 through the transmission action of the crank plate 112, the connecting plate 113, and the insulating pull rod 27, and the slot 221 is provided with a chamfer 222 to perform the closing action; when the isolation operation spindle 111 rotates in the reverse direction, the isolation moving contact 23 falls vertically and disengages from the gate slot 221 of the isolation stationary contact 22 through the transmission action of the crank plate 112, the connecting plate 113, and the insulating pull rod 27 to perform the opening action.

[0029] Furthermore, the isolating contact seat 24 is a split isolating contact seat 24, including a guide tube 241, a fixing plate 242, a sealing seat 243, and a spring contact finger. One end of the fixing plate 242 is disposed between the guide tube 241 and the sealing seat 243, and the other end of the fixing plate 242 is provided with a mounting hole. The mounting hole is locked to the isolating insulating housing 21 by screws. The guide tube 241 is located below the sealing seat 243. The sealing seat 243 is provided with an annular groove 2431 inside. The spring contact finger is installed in the annular groove 2431. The isolating moving contact 23 passes through the guide tube 241 and the sealing seat 243. The other end of the fixing plate 242 is also connected to the second wiring block 212 through the second conductive plate 26.

[0030] The beneficial effects of this technical solution are: it facilitates the assembly of the isolating contact seat 24 onto the isolating sealing housing by the operators, improving assembly efficiency. Specifically, the sealing seat 243 has two annular grooves 2431 inside, each housing a spring-loaded contact finger. Through the radial deformation of the spring-loaded contact fingers, an effective conductive connection is maintained between the sealing seat 243 and the isolating moving contact 23. A sealing treatment is applied between the sealing seat 243 and the isolating insulating housing 21.

[0031] Furthermore, it also includes: an isolation operation handle 114 is provided on the outside of the control box 11, the control box 11 is provided with a rotating hole, the isolation operation handle 114 passes through the rotating hole and is fixedly connected to the isolation operation spindle 111.

[0032] The beneficial effects of this technical solution are: it allows operators to manually complete the opening and closing actions of the isolating moving contact 23 and the isolating stationary contact 22 by driving the isolating operating spindle 111 through the isolating operating handle 114.

[0033] Specifically, the isolating moving contact 23 is tubular and made of existing metal materials; multiple vertical slots 231 help the upper end of the isolating moving contact 23 to converge and deform when closing; when opening, the upper end of the isolating moving contact 23 returns to its initial shape. The operator rotates the isolating operating spindle 111 in the forward direction using the isolating operating handle 114, and pushes the isolating moving contact 23 upward with the help of the crank plate 112, connecting plate 113 and insulating pull rod 27. The upper end of the isolating moving contact 23 stops rising when it contacts the chamfer 222 of the gate slot 221. At this time, the operator feels greater resistance during the closing operation, and needs to apply more force to the isolating operating handle 114. Then the upper end of the isolating moving contact 23 is squeezed and converges. After passing the chamfer 222, the upper end of the isolating moving contact 23 contracts towards the center due to the convergence deformation, and the upper end of the isolating moving contact 23 inserts into the gate slot 221. At this time, the operator feels a significant reduction in resistance. Compared to traditional disconnect switches where operators don't feel a change in resistance when closing, making it difficult to determine whether the closing was successful, the structure of this invention allows operators to easily determine successful closing by feeling the resistance increase and then decrease.

[0034] The insulating housing 21 is provided with an observation window 211, which is located between the insulating stationary contact 22 and the insulating contact base 24. The observation window 211 has a transparent plate, which is a tempered glass plate.

[0035] This utility model discloses a reliable closing operation disconnecting switch device applied to a pole-mounted circuit breaker. The circuit breaker body 1 includes a control box 11 and a vacuum interrupter 12. The bottom of the vacuum interrupter 12 is fixedly connected to the control box 11, and the top of the vacuum interrupter 12 is provided with a first terminal block 13. The moving and stationary contacts of the circuit breaker are housed inside the vacuum interrupter 12, which is existing technology. After the disconnecting switch device 2 completes closing, the first terminal block 13 and the second terminal block 212 can be energized. The second terminal block 212 is used to connect to an external power source. There are three vacuum interrupters 12 and three disconnecting switch devices 2, each used to connect to three-phase power.

[0036] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A disconnecting switch device with reliable closing operation, characterized in that, include: Insulating housing, stationary contact, moving contact, contact seat, first conductive plate, second conductive plate, insulating pull rod; The isolating stationary contact is fixedly connected to the top of the isolating insulating shell. The lower end of the isolating stationary contact is provided with a gate groove, and the opening of the gate groove is provided with a chamfer. The upper end of the isolating stationary contact is connected to the first terminal block through the first conductive plate. The isolating contact seat is fixedly connected to the interior of the isolating insulating shell. The isolating contact seat is provided with a guide hole. The surface of the isolating insulating shell is provided with a second wiring block. The isolating contact seat and the second wiring block are connected through the second conductive plate. The isolating moving contact is slidably connected to the guide hole, and the lower end of the isolating moving contact is fixedly connected to the upper end of the insulating pull rod. The upper end of the isolating moving contact is provided with a vertical strip-shaped opening. Multiple vertical strip-shaped openings are evenly spaced around the central axis of the isolating moving contact. When the isolating moving contact and the isolating stationary contact are closed, the upper end of the isolating moving contact first contacts the chamfer, and the upper end of the isolating moving contact is squeezed to produce a convergence deformation. Then the upper end of the moving contact is inserted into the gate slot.

2. The disconnecting switch device with reliable closing operation according to claim 1, characterized in that, Also includes: The control box includes an isolation insulating housing fixedly connected to it. The bottom of the isolation insulating housing communicates with the control box. The control box contains an isolation operating spindle, a crank plate, and a connecting plate. The isolation operating spindle is rotatably connected to the control box. The left end of the crank plate is fixedly connected to the isolation operating spindle. The right end of the crank plate is hinged to the lower end of the connecting plate. The upper end of the connecting plate is hinged to the lower end of the insulating pull rod.

3. The disconnecting switch device with reliable closing operation according to claim 1, characterized in that, The isolating contact seat is a split-type isolating contact seat, including a guide tube, a fixing plate, a sealing seat, and a spring contact finger. One end of the fixing plate is disposed between the guide tube and the sealing seat, and the other end of the fixing plate is provided with a mounting hole. The mounting hole is locked to the isolating insulating housing by screws. The guide tube is located below the sealing seat. The sealing seat has an annular groove inside, and the spring contact finger is installed in the annular groove. The isolating moving contact passes through the guide tube and the sealing seat. The other end of the fixing plate is also connected to the second wiring block through the second conductive plate.

4. The disconnecting switch device with reliable closing operation according to claim 2, characterized in that, Also includes: An isolation operation handle is provided on the outside of the control box. The control box is provided with a rotating hole. The isolation operation handle passes through the rotating hole and is fixedly connected to the isolation operation spindle.

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