Enclosed high-voltage alternating-current isolation disconnecting link

Abstract

The utility model discloses a closed high-voltage alternating-current isolation disconnecting link, which comprises a base and mounting seats mounted at two ends of the base, wiring assemblies are arranged at one ends, far away from the base, of the mounting seats, and disconnecting link assemblies used for circuit through-flow and circuit breaking are arranged between the wiring assemblies. One end of the disconnecting link assembly is rotatably connected to one of the wiring assemblies by arranging a rotary supporting piece, and the other end of the disconnecting link assembly is clamped to the other wiring assembly by arranging a locking assembly; the disconnecting link is simple in structure and reasonable in design, so that the disconnecting link is more insulated, and the failure rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a closed-type high-voltage AC isolating switch. Background Technology

[0002] A high-voltage disconnector is a mechanical switching device used in power systems for cable lines. Its primary function is electrical isolation, ensuring the line is de-energized during maintenance and guaranteeing operational safety. Its core function is to create a visible disconnect point, but it lacks arc-extinguishing capability. Therefore, it must operate under no-load or extremely low current conditions and is typically used in conjunction with a circuit breaker.

[0003] The shortcomings of existing technology:

[0004] Currently, due to the limited working environment of isolating switches, most of the conductive components of the isolating switches are exposed and prone to corrosion. Animal activities can easily cause short circuits between them. Switches used in coastal areas are subject to salt spray corrosion, and the contact joints are prone to corrosion and sintering, making them unable to break and losing their switching function. Utility Model Content

[0005] The purpose of this invention is to provide a closed-type high-voltage AC isolating switch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a closed high-voltage AC isolating switch, comprising a base and mounting seats installed at both ends of the base. A wiring assembly is provided at the end of the mounting seat away from the base. A switch assembly for circuit conduction and interruption is provided between the wiring assemblies. One end of the switch assembly is rotatably connected to one of the wiring assemblies by a rotating support, and the other end of the switch assembly is locked to the other wiring assembly by a locking component.

[0007] Preferably, the locking component includes:

[0008] The tripping ring is rotatably connected to the end of the disconnector assembly away from the rotating support.

[0009] The hook is rotatably connected to the side of the knife switch assembly near the trip ring. The transmission end of the trip ring is matched with the transmission end of the hook to drive the moving end of the hook to make a circular motion.

[0010] A latch is mounted on a wiring assembly at the end away from the rotating support, and the latch is used to limit the movable end of the hook.

[0011] Preferably, the driving end of the trip ring is a ring for actuating the trip ring, the hook part of the trip ring drive end is engaged with the hook groove of the hook drive end, and the hook part drives the hook groove to make a circular motion, and the latch is provided with a slot for limiting the hook groove of the hook moving end.

[0012] Preferably, a leaf spring for limiting the angle of the hook is connected to the pivot of the hook by means of a groove.

[0013] Preferably, the wiring assembly includes:

[0014] A terminal block is mounted on one side of the mounting base, and a stationary contact is provided on the side of the terminal block away from the mounting base;

[0015] An insulating housing that covers the non-connecting portions of the terminal block and the stationary contact;

[0016] The disconnector assembly includes:

[0017] The conductive busbar has moving contacts at both ends on the side adjacent to the terminal block that match the stationary contacts;

[0018] An insulating layer is provided, which covers the surface of the conductive busbar and the connection between the conductive busbar and the moving contact.

[0019] Preferably, the terminal block has a wiring cavity on the side away from the stationary contact, and a torque bolt for fastening the cable is threadedly connected to one side of the wiring cavity through a plurality of threaded holes. The top of the insulating shell has a window that matches the threaded holes, and the window is connected to a removable cover plate.

[0020] Preferably, the end of the insulating shell away from the conductive bar is provided with a gland to seal the position where the cable is inserted into the insulating shell.

[0021] Preferably, a sealing ring is provided on each adjacent side between the insulating shell and the insulating layer, and the sealing ring is used to seal the joint between the insulating shell and the insulating layer.

[0022] Preferably, the stationary contact is provided with adjusting bolts for adjusting the two conductive plates of the stationary contact.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This enclosed high-voltage AC isolating switch comprises a switch assembly, one end of which is rotatably connected to one of the wiring assemblies via a rotating support, and the other end of which is locked to another wiring assembly via a locking component. The locking component includes a tripping ring rotatably connected to one end of the switch assembly via a rotating shaft, a hook rotatably set on the switch assembly via a rotating shaft, and a latch mounted on a terminal block to limit the hook. Two cables requiring on / off control are connected to the terminal blocks at both ends. When the two cables need to be connected, one end of the switch assembly is rotatably connected to the rotating support, and the other end of the switch assembly is closed. One end of the hook engages with the hook groove of the latch, fixing the position of the switch assembly and preventing it from slipping during use and affecting cable conduction. When disconnection is required, a tool is inserted into the tripping ring, and then the tripping ring is lifted upwards. The tripping ring rotates around its own rotating shaft, causing the hook to rotate and disengage from the latch, opening the switch assembly and breaking the circuit. This improves safety during maintenance and reduces the possibility of oxidation and corrosion.

[0025] 2. This type of enclosed high-voltage AC isolating switch, through the bolt hole, tightens the torque bolt to the set torque, the torque bolt breaks directly from the fracture groove, and the cover plate is covered to prevent air from entering, reducing the oxidation of the terminal block and cable core. Finally, after tightening the nut, the clamping claws tighten inward to press the sealing gasket installed in the insulating shell against the cable, improving the stability of the connection between the terminal block and the cable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is an overall cross-sectional view of the present invention;

[0028] Figure 3 For the present utility model Figure 2 Enlarged diagram of point A in the middle.

[0029] In the diagram: 110, base; 120, mounting base; 121, fiberglass rod; 122, insulating shell; 130, wiring assembly; 131, terminal block; 1311, stationary contact; 1312, wiring cavity; 132, insulating shell; 140, disconnector assembly; 141, conductor bar; 1411, moving contact; 142, insulating layer; 151, trip ring; 152, hook; 153, latch; 160, rotating support; 2, torque bolt; 3, cover plate; 4, gland head; 5, sealing ring; 6, adjusting bolt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0034] Example

[0035] Please see Figure 1-3As shown, the present invention provides a closed high-voltage AC isolating switch, including a base 110 and mounting seats 120 installed at both ends of the base 110. Both mounting seats 120 are composed of fiberglass rods 121 and insulating shells 122 wrapped around the fiberglass rods 121. The insulating shells 122 can be made of rubber. A wiring assembly 130 is provided at the end of the mounting seat 120 away from the base 110. A switch assembly 140 for circuit conduction and disconnection is provided between the wiring assemblies 130. One end of the switch assembly 140 is rotatably connected to one of the wiring assemblies 130 through a rotating support 160, and the other end of the switch assembly 140 is locked to the other wiring assembly 130 through a locking component. The locking assembly includes a trip ring 151, a hook 152, and a latch 153. The trip ring 151 is rotatably connected to the end of the knife switch assembly 140 away from the rotating support 160. The hook 152 is rotatably connected to the side of the knife switch assembly 140 near the trip ring 151. The drive end of the trip ring 151 matches the drive end of the hook 152 to drive the moving end of the hook 152 to make a circular motion. The latch 153 is installed on the wiring assembly 130 at the end away from the rotating support 160, and the latch 153 is used to limit the moving end of the hook 152. The driving end of the trip ring 151 is an integrally formed ring for actuating the trip ring 151. The hook part of the driving end of the trip ring 151 is engaged with the hook groove of the driving end of the hook 152, and the hook part drives the hook groove to make a circular motion. The latch 153 has an integrally formed slot for limiting the hook groove of the moving end of the hook 152. The rotating shaft of the hook 152 is connected to a leaf spring for limiting the angle of the hook 152 through a groove. The hook 152 is always kept in an outward-push-open state by the leaf spring.

[0036] During closing, the knife switch assembly 140 rotates around the rotating support 160 as the center. During the closing process of the knife switch assembly 140 and the wiring assembly 130, the moving end of the hook 152 is squeezed by the latch 153 and rotates clockwise. After closing, the moving end of 152 is locked into the slot of the latch 153 under the elastic force of the leaf spring. When opening, it is only necessary to pull the ring of the opening pull ring 151 in the circumferential direction. The circumferential movement of the transmission end of the opening pull ring 151 drives the circumferential movement of the transmission end of the hook 152, so that the circumferential movement of the moving end of the hook 152 disengages from the slot of the latch 153, thereby achieving circuit breaking.

[0037] The wiring assembly 130 includes a terminal block 131 and an insulating housing 132. The terminal block 131 is mounted on one side of the mounting base 120. A stationary contact 1311 is provided on the side of the terminal block 131 away from the mounting base 120. The insulating housing 132 covers the non-connection parts of the terminal block 131 and the stationary contact 1311. The insulating housing 132 seals the terminal block 131 and the stationary contact 1311 to prevent them from being oxidized and corroded by rainwater. The disconnector assembly 140 includes a conductive bar 141 and an insulating layer 142. The conductive bar 141 is adjacent to the terminal block 131 on the side... Both ends are provided with moving contacts 1411 that match the stationary contact 1311. The insulating layer 142 covers the surface of the conductive bus 141 and the connection between the conductive bus 141 and the moving contact 1411. The insulating layer 142 wraps and seals the conductive bus 141 and the moving contact 1411 to prevent the terminal block 131 and the stationary contact 1311 from being oxidized and corroded by rainwater. After closing, the moving contact 1411 is stuck in the stationary contact 1311, and the terminal block 131 and the conductive bus 141 are connected to form a circuit. The insulating shell 132 and the insulating layer 142 seal the entire conductive structure to ensure stable operation after closing.

[0038] A wiring cavity 1312 is provided on the side of the terminal block 131 away from the stationary contact 1311. A torque bolt 2 for fastening the cable is threadedly connected to one side of the terminal block 131 in the wiring cavity 1312 through several threaded holes. The top of the insulating shell 132 has a window that matches the threaded holes, and the window is connected to a removable cover plate 3. In use, the metal part of the cable is inserted into the wiring cavity 1312, and then locked by screwing in the torque bolt 2. Then the cover plate 3 on the window is closed to prevent air from entering and reduce oxidation of the terminal block 131 and the cable core.

[0039] The end of the insulating housing 132 away from the conductive bar 141 is provided with a gland 4 to seal the position where the cable is inserted into the insulating housing 132. After tightening the nut of the gland 4, the clamping claw of the gland 4 retracts inward, pressing the sealing gasket installed inside the insulating housing 132 against the cable, thereby improving the stability of the connection between the terminal block 131 and the cable.

[0040] A sealing ring 5 is provided on each adjacent side between the insulating shell 132 and the insulating layer 142. The sealing ring 5 is used to seal the interface between the insulating shell 132 and the insulating layer 142. When the circuit is closed, the sealing ring 5 reduces the entry of air and water into the interface between the insulating shell 132 and the insulating layer 142, thereby improving the sealing performance between the moving contact 1411 and the stationary contact 1311.

[0041] The stationary contact 1311 is provided with an adjusting screw 6 for adjusting the two conductive plates of the stationary contact 1311. By rotating the adjusting screw, the distance between the two conductive plates of the stationary contact 1311 can be adjusted, which can ensure that the moving contact 1411 can be stably inserted into the stationary contact 1311.

[0042] Working principle of this device:

[0043] During use, insert the metal portion of the cable into the wiring cavity 1312, and then tighten it by screwing in the torque bolt 2. Then, cover the window with the cover plate 3 to prevent air from entering and reduce oxidation of the terminal block 131 and the cable core. Next, tighten the nut on the gland 4. The clamping claws of the gland 4 will retract inward, pressing the sealing gasket installed inside the insulating shell 132 against the cable, improving the stability of the connection between the terminal block 131 and the cable. This completes the cable connection. During closing, the knife switch assembly 140 rotates around the rotating support 160. During the closing process of the knife switch assembly 140 and the wiring assembly 130, the moving end of the hook 152 is subjected to... When the latch 153 is pressed, it rotates clockwise. After the circuit is closed, the moving end of 152 is engaged in the slot of the latch 153 under the elastic force of the leaf spring. After the circuit is closed, the moving contact 1411 is engaged in the stationary contact 1311. The terminal block 131 and the conductor bus 141 are connected to form a circuit. The insulating shell 132 and the insulating layer 142 seal the entire conductive structure to ensure stable operation after the circuit is closed. When the circuit is opened, it is only necessary to pull the ring of the opening pull ring 151 in the circumferential direction. The circumferential movement of the transmission end of the opening pull ring 151 drives the circumferential movement of the transmission end of the hook 152, so that the circumferential movement of the moving end of the hook 152 disengages from the slot of the latch 153, thereby breaking the circuit.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A closed-type high-voltage AC isolating switch, comprising a base (110) and mounting bases (120) installed at both ends of the base (110), characterized in that: A wiring assembly (130) is provided at one end of the mounting base (120) away from the base (110). A knife switch assembly (140) for circuit conduction and interruption is provided between the wiring assemblies (130). One end of the knife switch assembly (140) is rotatably connected to one of the wiring assemblies (130) by a rotating support (160), and the other end of the knife switch assembly (140) is locked to the other wiring assembly (130) by a locking component. The locking component includes: The tripping ring (151) is rotatably connected to the end of the knife switch assembly (140) away from the rotating support (160); Hook (152), the hook (152) is rotatably connected to the side of the knife switch assembly (140) near the trip ring (151), the transmission end of the trip ring (151) is matched with the transmission end of the hook (152) to drive the moving end of the hook (152) to make a circular motion; A latch (153) is mounted on a wiring assembly (130) at the end away from the rotating support (160), and the latch (153) is used to limit the movable end of the hook (152).

2. The enclosed high-voltage AC isolating switch according to claim 1, characterized in that: The driving end of the trip ring (151) is a ring for actuating the trip ring (151). The hook part of the driving end of the trip ring (151) is engaged with the hook groove of the driving end of the hook (152), and the hook part drives the hook groove to make a circular motion. The latch (153) is provided with a slot for limiting the hook groove of the moving end of the hook (152).

3. The enclosed high-voltage AC isolating switch according to claim 1, characterized in that: A leaf spring for limiting the angle of the hook (152) is connected to the pivot of the hook (152) by a groove.

4. The enclosed high-voltage AC isolating switch according to claim 1, characterized in that: The wiring assembly (130) includes: Terminal block (131), the terminal block (131) is installed on one side of the mounting base (120), and a stationary contact (1311) is provided on the side of the terminal block (131) away from the mounting base (120). An insulating housing (132) covers the non-connection portions of the terminal block (131) and the stationary contact (1311); The disconnector assembly (140) includes: The conductive bus (141) is provided with moving contacts (1411) that match the stationary contact (1311) at both ends of the conductive bus (141) adjacent to the terminal block (131). An insulating layer (142) is provided, which covers the surface of the conductive bus (141) and the connection between the conductive bus (141) and the moving contact (1411).

5. The enclosed high-voltage AC isolating switch according to claim 4, characterized in that: The terminal block (131) has a wiring cavity (1312) on the side away from the stationary contact (1311). The terminal block (131) has a torque bolt (2) for fastening the cable connected to one side of the wiring cavity (1312) through a plurality of threaded holes. The top of the insulating shell (132) has a window that matches the threaded holes, and the window is connected to a detachable cover plate (3).

6. The enclosed high-voltage AC isolating switch according to claim 4, characterized in that: The insulating shell (132) is provided with a gland (4) at the end away from the conductive bar (141) to achieve a seal at the position where the cable is inserted into the insulating shell (132).

7. The enclosed high-voltage AC isolating switch according to claim 4, characterized in that: A sealing ring (5) is provided on each adjacent side between the insulating shell (132) and the insulating layer (142), and the sealing ring (5) is used to seal the interface between the insulating shell (132) and the insulating layer (142).

8. The enclosed high-voltage AC isolating switch according to claim 4, characterized in that: The stationary contact (1311) is provided with adjusting bolts (6) for adjusting the two conductive plates of the stationary contact (1311).

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