Chargeable disconnecting switch

Abstract

The chargeable dismountable isolating switch belongs to the technical field of power equipment. The isolating switch mainly comprises an insulating support, a fixed plate, an insulating operating rod support frame and a knife switch assembly. The upper and lower ends of the insulating support are respectively connected with a static end support of a blade, a second live row and a dynamic end support of the blade, and a first live row. The fixed plate is bent at an obtuse angle to form two support portions, which are respectively connected with the lower end of the insulating support and the insulating operating rod support frame. The core of the utility model is that the insulating operating rod is rotated after penetrating through the insulating operating rod support frame, so that the entire isolating switch body can be lifted or lowered by using the lever principle, and the quick installation and dismounting of the isolating switch on a wire pole under live wire are realized. The knife switch assembly adopts a parallel double-blade structure with a pressure spring and a closing locking device, so as to ensure reliable connection. The isolating switch has the advantages of compact structure, simple operation, safety and reliability, effectively solves the problem that the traditional isolating switch must be powered off during installation and dismounting, and significantly improves the power supply continuity and stability of the power system.

Description

Technical Field

[0001] This utility model relates to the field of high voltage electrical technology, and in particular to a detachable disconnector switch that can be installed while energized. Background Technology

[0002] With the continuous development of power systems, higher requirements are placed on the safety and ease of operation of disconnecting switches. Traditional disconnecting switches often require power outages during installation and removal, which can negatively impact the stable operation of the power system. Therefore, designing a energized and detachable disconnecting switch is of great significance. This design, based on the fundamental principles of disconnecting switches, utilizes a special structural design to provide a compact, easy-to-operate, safe, and reliable energized and detachable disconnecting switch that allows for rapid installation and removal while the circuit is energized. Utility Model Content

[0003] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a detachable disconnector switch that can be installed while energized, including...

[0004] An insulating support column, wherein a blade stationary end bracket and a second energized busbar are fixedly connected to the upper end of the insulating support column, and a blade moving end bracket and a first energized busbar are fixedly connected to the lower end of the insulating support column;

[0005] A fixing plate is formed by bending the fixing plate at an obtuse angle to form a first support part and a second support part. The first support part is fixedly connected to the lower end of the insulating column. A mounting base is fixedly connected to the bent part of the fixing plate.

[0006] An insulated operating rod support frame is fixedly connected to the mounting base.

[0007] More preferably, a reinforcing rib is provided between the first support portion and the mounting base.

[0008] More preferably, the included angle between the first support portion and the second support portion is greater than 100°.

[0009] More preferably, the insulating operating rod support frame includes a cylindrical section and a tapered flared section coaxially fixedly connected. The cylindrical section has a first opening along the axial direction, and the tapered flared section has a second opening along the axial direction. The second opening extends to the cylindrical section and communicates with the first opening in the cylindrical section.

[0010] More preferably, it also includes a disconnector assembly, the disconnector assembly comprising...

[0011] A first blade and a second blade are placed in parallel, with one end of the first blade and the second blade hinged to the blade moving end support via a hinge shaft;

[0012] A limiting plate, one end of which extends outward and curves upward, and the other end is fixed to the first blade;

[0013] A first compression spring and a second compression spring, wherein the first compression spring is fixedly connected to one end of the first blade and the second blade; and the second compression spring is fixedly connected to the other end of the first blade and the second blade.

[0014] A first support sleeve is provided near the first compression spring and is fixedly connected to the first blade and the second blade;

[0015] The second support sleeve is located near the second compression spring and is fixedly connected to the first blade and the second blade.

[0016] A closing locking device is fixedly connected to a second support sleeve, thereby supporting and positioning the closing locking device at a predetermined position between the first blade and the second blade.

[0017] More preferably, the closing locking device includes a support plate, a locking buckle and a tension spring. The locking buckle is an L-shaped plate, with its middle part hinged to the support plate, one end forming a hook, and its other end connected to the support plate through the tension spring. The support plate has a central hole, the edge of which corresponds to the arc-shaped edge of the locking buckle.

[0018] More preferably, one end of the blade moving end bracket is fixedly connected to the lower end of the insulating support, and the other end is bent upward and passes through the space between the first blade and the second blade.

[0019] More preferably, one end of the blade stationary end bracket is fixedly connected to the insulating support, and the other end has a square hole.

[0020] More preferably, the insulating support is a composite insulating support.

[0021] The beneficial effects of this utility model are that installation, closing, and opening operations are all performed through an insulated operating rod, ensuring that operators always maintain a safe distance from high-voltage electricity, truly achieving live-line work. The closing locking device uses lever and spring principles to achieve self-locking and reliable connection in the closed state, and rapid tripping in the open state, greatly improving the reliability and safety of operation. This device has a simple structure, is easy to operate and maintain, and is suitable for uninterrupted installation, maintenance, or replacement work in power distribution network lines. Attached Figure Description

[0022] Figure 1 This is a schematic diagram (front view) of the overall closing structure of this utility model;

[0023] Figure 2This is a partial structural diagram of the closing mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the mounting base structure of this utility model;

[0025] Figure 4 This is a schematic diagram (left view) of the overall closing structure of this utility model;

[0026] Figure 5 This is a schematic diagram (front view) of the overall structure of the circuit breaker of this utility model;

[0027] Figure 6 This is a schematic diagram (left view) of the overall structure of the circuit breaker of this utility model;

[0028] Figure 7 This is a schematic diagram of the fixing method of the locking device of this utility model;

[0029] Figure 8 This is a partially enlarged structural schematic diagram of the main view of the closing circuit of this utility model;

[0030] Figure 9 This is a partially enlarged structural schematic diagram of the left view of the closing circuit of this utility model;

[0031] Figure 10 This is a partially enlarged structural schematic diagram of the left view of the tripping switch of this utility model;

[0032] Figure 11 This is a schematic diagram of the insulating operating rod support frame structure of this utility model;

[0033] Figure 12 This is a schematic diagram (front view) of the blade moving end support structure of this utility model;

[0034] Figure 13 This is a schematic diagram (top view) of the blade moving end support structure of this utility model;

[0035] Figure 14 This is a schematic diagram of the blade stationary end support structure of this utility model;

[0036] Figure 15 This is a schematic diagram (front view) of the knife switch assembly structure of this utility model;

[0037] Figure 16 This is a schematic diagram (bottom view) of the knife switch assembly structure of this utility model;

[0038] Figure 17 This is a schematic diagram (front view) of the closing locking device of this utility model;

[0039] Figure 18 This is a schematic diagram (rear view) of the closing locking device of this utility model;

[0040] Explanation of the labels in the diagram:

[0041] 1. Insulated operating rod support frame; 1.1. Cylindrical section; 1.2. Conical flared section; 1.3. First opening; 1.4. Second opening; 2. Fixing plate; 2.1. First support part; 2.2. Second support part; 2.3. Mounting base; 2.3a. First mounting plate; 2.3b. Second mounting plate; 2.3c. Third mounting plate; 2.4. Reinforcing rib; 3. First live busbar; 4. Blade moving end bracket; 5. Insulated support column; 6. Blade stationary end 7. Bracket; 8. Second live busbar; 9. Knife switch assembly; 8.1a. First blade; 8.1b. Second blade; 8.2. Limit plate; 8.3a. First compression spring; 8.3b. Second compression spring; 8.4. First support sleeve; 8.5. Closing locking device; 8.5.1. Support plate; 8.5.2. Locking buckle; 8.5.3. Two tension springs; 8.6. Second support sleeve; 8.6a. Second support sleeve a; 8.6b. Second support sleeve b. Detailed Implementation

[0042] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0043] Depend on Figures 1 to 18 The present invention relates to some embodiments of a energized and detachable disconnector switch, including an insulating support 5, a fixing plate 2, and an insulating operating rod support frame 1.

[0044] In these embodiments, the fixing plate 2 can be made of stainless steel. The insulating support column 5 serves as the core support component, with two connecting holes at its upper end. Two bolts are used to fasten the blade stationary end bracket 6 and the second charged busbar 7 together to the two connecting holes. Similarly, two connecting holes are provided at its lower end, with two bolts used to fasten the blade moving end bracket 4 and the first charged busbar 3 together to the two connecting holes. The fixing plate 2 is formed by bending a stainless steel plate at an obtuse angle, creating a first support part 2.1 connected to the lower end of the insulating support column 5 and a second support part 2.2 for mounting the insulating operating rod support frame. A mounting base 2.3 is fixedly connected to the bent portion of the fixing plate 2. The mounting base 2.3 includes a first mounting plate 2.3a fixedly connected to the bent portion of the fixing plate 2, a second mounting plate 2.3b extending laterally from the first mounting plate, and a third mounting plate 2.3c extending upward from the second mounting plate 2b. The first support part 2.1 is placed below the blade moving end bracket 4 and the first charged busbar 1 and is fastened to the lower end of the insulating support column 5 by two bolts. The insulating operating rod support frame 1 is fixedly mounted on the mounting base 3. The central through hole of the insulating operating rod support frame 1 allows the insulating operating rod (not shown in the figure) to pass through. During operation, the insulating operating rod is inserted into the insulating operating rod support frame 1. By rotating the insulating operating rod, the top end of the insulating operating rod contacts the lower end of the fixing plate 2 or the insulating support column 5 and acts as a fulcrum. Using the lever principle, the entire disconnecting switch is smoothly lifted, thereby completing the installation or removal on the live line.

[0045] In some implementations, such as Figure 2 As shown, a reinforcing rib 2.4 is provided between the first support portion 2.1 and the mounting base 2.3. The reinforcing rib 2.4 consists of two symmetrically arranged reinforcing ribs, one end of which is fixedly connected to the side of the first mounting plate 2.3a, and the other end is fixedly connected to the side of the first support plate 2.1.

[0046] In some implementations, such as Figure 1 As shown, the included angle between the first support portion 2.1 and the second support portion 2.2 is greater than 100°.

[0047] In a preferred embodiment, the included angle α between the first support portion 2.1 and the second support portion 2.2 formed after the fixing plate 2 is bent is set to 135°. This angle can provide sufficient support strength while ensuring that the insulating operating rod has an optimal lever arm angle, so that the operator can lift the disconnecting switch with less force, achieving the effects of labor saving and convenient operation.

[0048] In some implementations, such as Figure 11As shown, the insulating operating rod support frame 1 includes a cylindrical section 1.1 and a tapered flared section 1.2 coaxially fixedly connected. The cylindrical section 1.1 has a first opening 1.3 along the axial direction, and the tapered flared section 1.2 has a second opening 1.4 along the axial direction. The second opening 1.4 extends to the cylindrical section 1.1 and communicates with the first opening 1.3 in the cylindrical section 1.1.

[0049] In these embodiments, the insulated operating rod support frame 1 is specifically a component made of stainless steel. Its structure includes a cylindrical section 1.1 for inserting and guiding the operating rod, and a tapered flared section 1.2 at the bottom. The end of the cylindrical section 1.1 away from the tapered flared section 1.2 is fixedly mounted on the third mounting plate 2.3c. This design allows the operating rod to be quickly positioned through the opening upon insertion, with the tapered flared section acting as a guide and center, ensuring the operating rod reaches the predetermined position accurately and smoothly.

[0050] In some implementations, such as Figure 15 , 16 As shown, this embodiment also includes a knife switch assembly 8. This assembly includes a first blade 8.1a and a second blade 8.1b placed in parallel. One end of the first blade 8.1a and the second blade 8.1b is hinged to the blade moving end bracket 4 via a hinge shaft, allowing them to rotate around the hinge shaft. A limiting plate 8.2 is provided between the first blade 8.1a and the first compression spring 8.3a to prevent the two blades from excessively squeezing inward or opening outward during the opening and closing process, maintaining their relative position stability. At both ends of the first blade 8.1a and the second blade 8.1b, a first compression spring 8.3a and a second compression spring 8.3b are respectively fixedly provided. The first compression spring 8.3a is fixedly connected to one end of the first blade 8.1a and the second blade 8.1b; the second compression spring 8.3b is fixedly connected to the other end of the first blade 8.1a and the second blade 8.1b, providing contact pressure. Furthermore, the first support sleeve 8.4 and the second support sleeve 8.6 are fixedly connected to the first blade 8.1a and the second blade 8.1b by bolts, with the first support sleeve 8.4 located near the first compression spring 8.3a. The closing locking device 8.5 is fastened to the second support sleeve a8.6a and the second support sleeve b8.6b by two bolts respectively, thereby supporting and positioning the closing locking device 8.5 at a predetermined position between the first blade 8.1a and the second blade 8.1b.

[0051] In these embodiments, the first blade 8.1a and the second blade 8.1b are copper busbars, preferably pure copper busbars; the first compression spring 8.3a and the second compression spring 8.3b are preferably made of stainless steel wire; the limiting plate 8.2 is preferably made of stainless steel; the first support sleeve 8.4 and the second support sleeve 8.6 are preferably made of stainless steel; one end of the knife gate assembly 8 is fixedly connected to the blade moving end bracket 4, the first blade 8.1a and the second blade 8.1b, the limiting plate 8.2 and the first compression spring 8.3a by a bolt.

[0052] In some implementations, such as Figure 14 , 15 As shown, the specific structure of the closing locking device 8.5 includes a support plate 8.5.1, an L-shaped locking buckle 8.5.2, and a tension spring 8.5.3. The support plate 8.5.1 is fixedly connected to the second support sleeve 8.6 through screw holes at two corners on the same side, thereby supporting and positioning the closing locking device 8.5 at a predetermined position between the first blade 8.1a and the second blade 8.1b. The middle part of the locking buckle 8.5.2 is hinged to the support plate 8.5.1 through a pin, allowing it to rotate around the pin. One end of the locking buckle 8.5.2 forms a hook for locking the blade stationary end bracket 6 when the circuit is closed; its other end is connected to the support plate 8.5.1 through the tension spring 8.5.3. Under the tension of the tension spring 8.5.3, the hook end of the locking buckle 8.5.2 always maintains a tendency to move in the locking direction, ensuring the self-locking function after the circuit is closed.

[0053] In some implementations, such as Figure 9 , 10 As shown, one end of the blade moving end bracket 4 is fixedly connected to the lower end of the insulating support 5, and the other end is bent upward and passes through the first blade 8.1a and the second blade 8.1b, providing a stable and reliable rotation fulcrum for the knife switch assembly 8.

[0054] In some implementations, such as Figure 11 As shown, one end of the blade stationary end bracket 6 is fixedly connected to the upper end of the insulating support 5 by bolts, and the other end has a square hole 6.1. When the circuit is closed, the hook at one end of the locking buckle 8.5.2 will engage with the square hole 6.1 under the action of the compression spring 8.3, and firmly lock the first blade 8.1a, the second blade 8.1b and the second live busbar 7 under the tension of the tension spring 8.3, forming good electrical contact and mechanical connection.

[0055] In some embodiments, as a further optimization, reinforcing ribs are welded to the back of the second support portion 2.2 of the fixed plate 2 (i.e., the portion connected to the insulating operating rod support frame 1). These reinforcing ribs significantly enhance the bending strength and structural stability of the fixed plate 2 when bearing the weight and operating force of the entire disconnecting switch, preventing plastic deformation and ensuring long-term reliability.

[0056] In some embodiments, as a further optimization, the insulating support 5 is a composite insulating support. Composite material insulating supports are small in size, light in weight, and have a compact structure, making them easy to transport and install.

[0057] How this utility model is used:

[0058] First, the insulating operating rod support frame is erected using the insulating operating rod: the operating head of the insulating operating rod is vertically inserted from below and passes through the insulating operating rod support frame 1. Then, the insulating operating rod is smoothly rotated clockwise by approximately 90°. During this process, the operating head of the insulating operating rod interacts with the lower structure of the fixing plate 2 or the insulating support column 5, forming a lever fulcrum. Subsequently, the fixing plate 2 is aligned with the preset fixing position on the utility pole and installed and fixed. Finally, the operating rod is rotated counterclockwise by 90° to disengage it from the internal structure, allowing the insulating operating rod to be safely removed from the insulating operating rod support frame 1. This completes the live-line installation process of the disconnecting switch.

[0059] The disassembly process is the reverse of the installation process.

[0060] During the closing operation, the operating head of the insulated operating rod passes through the gap between the support plate 8.5.1 and the locking buckle 8.5.2 in the closing locking device 8.5 and pushes upward. The locking buckle 8.5.2 rotates under the push of the operating rod, causing the hook at one end to engage with the square hole 6.1. Subsequently, under the tension of the tension spring 8.5.3, the locking buckle 8.5.2 is firmly locked. At this point, a reliable electrical connection is established between the first blade 8.1a and the second blade 8.1b and the second live busbar 7, completing the closing operation. At this time, the contact pressure provided by the compression spring 8.3 is controlled at 180N ± 5N.

[0061] During the tripping operation, the operating head of the insulated operating rod is inserted into the gap between the support plate 8.5.1 and the locking buckle 8.5.2 in the closing locking device 8.5, and a downward force is applied. This force causes the locking buckle 8.5.2 to rotate, and its hook separates from the square hole 6.1. After the hook disengages, under the restoring force of the tension spring 8.5.3, the locking buckle 8.5.2 returns to its original position, thereby causing the first blade 8.1a and the second blade 8.1b to disconnect from the second live busbar 7, completing the tripping process.

[0062] This invention allows for installation, closing, and opening operations all to be performed using an insulated operating rod, ensuring operators maintain a safe distance from high-voltage electricity and truly enabling live-line work. The closing locking device utilizes lever and spring principles to achieve self-locking and reliable connection in the closed state, as well as rapid tripping in the open state, significantly improving operational reliability and safety. This device has a simple structure, is easy to operate and maintain, and is suitable for uninterrupted installation, maintenance, or replacement work in power distribution networks.

[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. The above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A detachable disconnector switch that can be installed while energized, characterized in that, include An insulating support (5) is fixedly connected to a blade stationary end bracket (6) and a second energized busbar (7) at its upper end and to a blade moving end bracket (4) and a first energized busbar (3) at its lower end. A fixing plate (2) is formed by bending at an obtuse angle to form a first support part (2.1) and a second support part (2.2). The first support part (2.1) is fixedly connected to the lower end of the insulating support column (5). A mounting base (2.3) is fixedly connected to the bent part of the fixing plate (2). An insulating operating rod support frame (1) is fixedly connected to the mounting base (2.3).

2. The energized detachable disconnector according to claim 1, characterized in that, A reinforcing rib (2.4) is provided between the first support part (2.1) and the mounting base (2.3).

3. The energized detachable disconnector according to claim 1, characterized in that, The included angle between the first support part (2.1) and the second support part (2.2) is greater than 100°.

4. The energized detachable disconnector according to claim 1, characterized in that, The insulating operating rod support frame (1) includes a cylindrical section (1.1) and a tapered flared section (1.2) that are coaxially fixedly connected. The cylindrical section (1.1) has a first opening (1.3) along the axial direction, and the tapered flared section (1.2) has a second opening (1.4) along the axial direction. The second opening (1.4) extends to the cylindrical section (1.1) and communicates with the first opening (1.3) in the cylindrical section (1.1).

5. The energized detachable disconnector according to claim 1, characterized in that, It also includes a disconnector assembly (8), which includes... A first blade (8.1a) and a second blade (8.1b) are placed in parallel, with one end of the first blade (8.1a) and the second blade (8.1b) connected to the blade moving end support (4); A limiting plate (8.2) has one end extending outward and curving upward, and the other end fixed to the first blade (8.1a); A first compression spring (8.3a) and a second compression spring (8.3b), wherein the first compression spring (8.3a) is fixedly connected to one end of the first blade (8.1a) and the second blade (8.1b); and the second compression spring (8.3b) is fixedly connected to the other end of the first blade (8.1a) and the second blade (8.1b). The first support sleeve (8.4) is located near the first compression spring (8.3a) and is fixedly connected to the first blade (8.1a) and the second blade (8.1b); The second support sleeve (8.6) is located near the second compression spring (8.3b) and is fixedly connected to the first blade (8.1a) and the second blade (8.1b); A closing locking device (8.5) is fixedly connected to a second support sleeve (8.6), thereby supporting and positioning the closing locking device (8.5) at a predetermined position between the first blade (8.1a) and the second blade (8.1b).

6. The energized detachable disconnector according to claim 5, characterized in that, The closing locking device (8.5) includes a support plate (8.5.1), a locking buckle (8.5.2), and a tension spring (8.5.3). The locking buckle (8.5.2) is an L-shaped plate, with its middle part hinged to the support plate (8.5.1), one end forming a hook, and its other end connected to the support plate (8.5.1) through the tension spring (8.5.3). The support plate (8.5.1) has a central hole, the edge of which corresponds to the arc-shaped edge of the locking buckle (8.5.2).

7. The energized detachable disconnector according to claim 5, characterized in that, One end of the blade moving end bracket (4) is fixedly connected to the lower end of the insulating support (5), and the other end is bent upward and passes through the space between the first blade (8.1a) and the second blade (8.1b).

8. The energized detachable disconnector according to claim 1, characterized in that, One end of the blade stationary end bracket (6) is fixedly connected to the insulating support (5), and the other end is provided with a square hole (6.1).

9. The energized detachable disconnector according to claim 1, characterized in that, The insulating support (5) is a composite insulating support.

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