High-voltage isolating switch convenient to overhaul

Abstract

The invention relates to the technical field of electrical equipment maintenance, in particular to a high-voltage isolating switch convenient to maintain, which comprises a mounting frame, a plurality of insulating columns I and insulating columns II are mounted at the top end of the mounting frame, lower outgoing lines are mounted at the top ends of the insulating columns I, and upper outgoing lines are mounted at the top ends of the insulating columns II. The top end of the upper outgoing line is provided with an upper insertion sheet, and the top end of the lower outgoing line is hinged with an isolation knife row which can be inserted with the upper insertion sheet. According to the invention, by pulling the isolation handle, the isolation handle rotates to drive the isolation switch to be separated from the upper outgoing line; in the process of separating the isolation switch from the upper outgoing line, the transmission handle drives the adjusting handle to rotate, so that the grounding knife row is communicated with the upper outgoing line, the operation sequence that the isolation switch is completely disconnected and then the grounding switch is closed is ensured through a mechanical structure, fatal risks are eradicated from the physical level, and maintenance workers are prevented from being damaged in the construction process. And serious hidden dangers are caused by misoperation of wrong erection.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment maintenance, and in particular to a high-voltage isolating switch that is easy to maintain. Background Art

[0002] When inspecting or maintaining electrical equipment (such as circuit breakers, transformers, busbars, cables, etc.) or lines, reliably and clearly disconnect the equipment in need of inspection from all possible power sources (including power sources on both sides). This creates a visible, physically isolated "breakpoint" for maintenance personnel, providing a basic safe working environment.

[0003] The isolating switch is used to isolate the equipment from the running system and shut it down safely. When the line is under maintenance, after opening the isolating switch, the line will be connected to the ground wire for safety reasons. The ground wire must be connected to the ground after the relevant operations of stopping the power supply are implemented. If the construction personnel make a mistake and perform operations such as hanging the ground wire first, it may cause serious safety hazards.

[0004] Therefore, it is necessary to invent a high-voltage disconnect switch that is easy to repair to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-voltage disconnector that is easy to maintain. By using an earthing knife switch instead of hanging a ground wire, and through a linkage structure, it is achieved that when the disconnector and the earthing switch are connected at the same time, only one side of the line is connected, avoiding the problem of safety hazards caused by different hanging sequences.

[0006] To achieve this object, the present invention adopts the following technical solutions: A high-voltage disconnector that is easy to maintain is provided, comprising a mounting frame, wherein a plurality of insulating columns 1 and 2 are mounted on the top of the mounting frame, a lower outlet is mounted on the top of the plurality of insulating columns 1, an upper outlet is mounted on the top of the plurality of insulating columns 2, an upper plug is mounted on the top of the upper outlet, an isolating knife row that can be plugged into the upper plug is hinged on the top of the lower outlet, a lower plug is mounted on the bottom of the upper outlet, an isolating knife switch adjustment device for lifting the isolating knife row and a grounding knife switch adjustment device that can be plugged into the lower plug are rotatably mounted inside the mounting frame, a synchronous connection device is rotatably mounted on the side wall of the mounting frame, the synchronous connection device comprises a transmission handle, and the two ends of the transmission handle respectively form a transmission connection with the isolating knife switch adjustment device and the grounding knife switch adjustment device.

[0007] As a preferred solution for a high-voltage disconnector that is easy to maintain, the isolation knife switch adjustment device includes an isolation main shaft and an isolation handle, and the grounding knife switch adjustment device includes a synchronous rotating shaft and an adjustment handle. One end of the isolation handle is equipped with a connecting column 1, and one end of the adjustment handle is equipped with a connecting column 2. Both ends of the transmission handle are provided with waist-shaped slide grooves, and the connecting column 1 and the connecting column 2 are both located on the inner side of the waist-shaped slide groove and slide.

[0008] As a preferred solution for a high-voltage disconnector that is easy to maintain, the isolation knife switch adjustment device also includes an isolation knife crank arm and a push-pull rod. The isolation main shaft is rotatably connected to the mounting frame, and the isolation knife crank arm is sleeved on the outside of the isolation main shaft. The end of the isolation knife crank arm is hinged to the push-pull rod, and the top of the push-pull rod is hinged to the isolation knife row.

[0009] As a preferred solution for a high-voltage disconnect switch that is easy to maintain, the grounding knife switch adjustment device also includes a grounding knife arm, a grounding knife row, and a grounding rod. The grounding knife arm is sleeved on the outside of the synchronous rotating shaft, and the top of the grounding knife arm is fixedly connected to the grounding knife row. Multiple grounding knife rows are commonly connected to the grounding rod, and the grounding knife row can be connected to the lower plug.

[0010] As a preferred solution for a high-voltage disconnector that is easy to maintain, a plurality of connecting blocks 1 are sleeved on the outer side of the isolation main shaft, one end of the connecting block 1 is hinged with an isolation spring, and a connecting block 2 is installed at the bottom end of the mounting frame, and the other end of the isolation spring is hinged with the connecting block 2.

[0011] As a preferred solution for a high-voltage disconnector that is easy to maintain, a plurality of connecting blocks three are sleeved on the outer side of the synchronous rotating shaft, one end of the connecting block three is hinged with a reset spring shaft, and the other end of the reset spring shaft is hinged with the mounting frame at the bottom end of the second insulating column.

[0012] As a preferred solution for a high-voltage disconnector that is easy to maintain, the isolation knife row is provided with hinge point one and hinge point two, the hinge point one is hinged to the lower outlet, and the hinge point two is hinged to the push-pull rod, and the isolation knife row is provided in plurality and is located on both sides of the upper outlet respectively.

[0013] As a preferred solution for a high-voltage disconnector that is easy to maintain, the transmission handle is located in the middle of the isolation handle and the adjustment handle; when the isolation handle rotates counterclockwise, the transmission handle drives the adjustment handle to rotate counterclockwise.

[0014] As a preferred solution for a high-voltage disconnector that is easy to maintain, when the isolation handle is rotated counterclockwise, the isolation knife crank arm drives the push-pull rod to be pushed out, and the isolation knife row is separated from the upper insert.

[0015] As a preferred solution for a high-voltage disconnect switch that is easy to maintain, when the adjustment handle rotates counterclockwise, the synchronous rotating shaft drives the grounding knife row to fit with the lower insert.

[0016] The beneficial effects of the present invention are as follows: an upper outlet line is installed on the top of the second insulating column, and an isolating knife switch and a grounding knife switch that can be plugged in therewith are respectively provided; the isolating knife switch adjusting device and the grounding knife switch adjusting device are driven by a synchronous connection device; the isolating handle is pulled, and the isolating handle rotates to drive the isolating knife switch to separate from the upper outlet line; during the separation process of the two, the transmission handle drives the adjusting handle to rotate, so that the grounding knife row is connected to the upper outlet line, and the mechanical structure ensures that the operating sequence of first completely disconnecting the isolating knife switch and then closing the grounding knife switch is ensured, thereby eliminating fatal risks at the physical level and avoiding the problem of serious hidden dangers caused by maintenance workers' misoperation due to incorrect installation during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the isolating switch described in the present invention.

[0019] Figure 2 This invention Figure 1 Enlarged schematic diagram of point A in the middle.

[0020] Figure 3 It is a schematic diagram of the bottom structure assembly of the mounting frame of the present invention.

[0021] Figure 4 This invention Figure 3 Enlarged structural diagram at point B in the middle.

[0022] Figure 5 It is a schematic diagram of the structure in which the isolation knife switch disconnects the grounding knife switch of the present invention.

[0023] Figure 6 This invention Figure 5 Enlarged structural diagram at point D in the middle.

[0024] Figure 7 This invention Figure 5 Enlarged structural diagram at point C in the middle.

[0025] In the picture: 1. Mounting frame; 2. Insulating column 1; 3. Upper outlet; 301. Upper plug; 302. Lower plug; 4. Isolating knife switch adjustment device; 401. Isolating knife arm; 402. Connecting block 1; 403. Isolating spring; 404. Connecting block 2; 405. Isolating handle; 406. Connecting column 1; 407. Isolating main shaft; 5. Synchronous connection device; 501. Transmission handle; 502. Waist-shaped slide; 6. Grounding knife switch adjustment device; 601. Adjusting handle; 602. Connecting block 3; 603. Grounding rod; 604. Grounding knife arm; 605. Reset spring shaft; 606. Grounding knife row; 607. Synchronous rotating shaft; 608. Connecting column 2; 7. Lower outlet; 8. Isolating knife row; 801. Hinge point 1; 802. Hinge point 2; 9. Push-pull rod; 11. Insulating column 2. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0027] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the description of the present invention, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0030] refer to Figures 1 to 7, an example of the present invention provides a high-voltage disconnector that is easy to maintain, including a mounting frame 1, wherein a plurality of insulating columns 1 2 and insulating columns 2 11 are installed at the top of the mounting frame 1, a lower outlet 7 is installed at the top of the plurality of insulating columns 1 2, an upper outlet 3 is installed at the top of the plurality of insulating columns 2, and an upper outlet 3 is installed at the top of the upper outlet 3, an upper plug-in piece 301 is provided at the top of the lower outlet 7, an isolating knife row 8 that can be plugged into the upper plug-in piece 301 is hinged at the top of the lower outlet 7, and a lower plug-in piece 302 is provided at the bottom end of the upper outlet 3, an isolating knife switch adjusting device 4 for lifting the isolating knife row 8 and a grounding knife switch adjusting device 6 that can be plugged into the lower plug-in piece 302 are rotatably installed inside the mounting frame 1, and a synchronous connection device 5 is rotatably installed on the side wall of the mounting frame 1, and the synchronous connection device 5 includes a transmission handle 501, and the two ends of the transmission handle 501 respectively form a transmission connection with the isolating knife switch adjusting device 4 and the grounding knife switch adjusting device 6. When the isolation knife row 8 is plugged into the upper plug-in piece 301, the grounding knife row 606 is separated from the lower plug-in piece 302. At this time, the circuit of the insulating column 1 2 is connected to the insulating column 2 11. When the worker needs to perform maintenance, he pulls the isolation handle 405 and rotates it counterclockwise to drive the isolation knife row 8 to separate from the upper plug-in piece 301, and the grounding knife row 606 is connected to the lower plug-in piece 302. The grounding line is connected to protect the safety of the maintenance workers.

[0031] refer to Figure 1 The isolation switch adjustment device 4 includes an isolation main shaft 407 and an isolation handle 405. The grounding switch adjustment device 6 includes a synchronous rotating shaft 607 and an adjustment handle 601. One end of the isolation handle 405 is installed with a connecting column 1 406, and one end of the adjustment handle 601 is installed with a connecting column 2 608. Both ends of the transmission handle 501 are provided with waist-shaped sliding grooves 502. The connecting column 1 406 and the connecting column 2 608 are both located inside the waist-shaped sliding grooves 502 and slide. The setting of the transmission handle 501 can drive the adjustment handle 601 to rotate synchronously with the rotation of the isolation handle 405. The adjustment handle 601 drives the synchronous rotating shaft 607 to rotate to achieve the connection between the grounding knife row 606 and the lower plug 302, thereby realizing the synchronous switching of the two power transmission lines, reducing the switching time and improving safety.

[0032] refer to Figure 1 The isolation knife switch adjustment device 4 also includes an isolation knife crank arm 401 and a push-pull rod 9. The isolation main shaft 407 is rotatably connected to the mounting frame 1. The isolation knife crank arm 401 is sleeved on the outside of the isolation main shaft 407. The end of the isolation knife crank arm 401 is hinged to the push-pull rod 9, and the top of the push-pull rod 9 is hinged to the isolation knife row 8. The isolation knife crank arm 401 is configured to push out the push-pull rod 9 during rotation to achieve separation of the isolation knife switch.

[0033] refer to Figure 1The grounding switch adjustment device 6 further includes a grounding blade arm 604, a grounding blade row 606, and a grounding rod 603. The grounding blade arm 604 is sleeved on the outside of the synchronous rotating shaft 607. The top of the grounding blade arm 604 is fixedly connected to the grounding blade row 606. Multiple grounding blade rows 606 are commonly connected to the grounding rod 603, and the grounding blade rows 606 can be connected to the lower plug 302. The grounding rod 603 is connected to multiple grounding blade rows 606 to ensure that the grounding blade rows 606 are in the same plane and are simultaneously connected to the lower plug 302, thereby ensuring a good grounding effect.

[0034] refer to Figure 3 The outer side of the isolation main shaft 407 is provided with a plurality of connecting blocks 402. One end of each connecting block 402 is hinged to an isolation spring 403. The bottom end of the mounting frame 1 is provided with a connecting block 404. The other end of each isolation spring 403 is hinged to the connecting block 404. The provision of the isolation spring 403 is used to increase the switching speed.

[0035] refer to Figure 3 The outer side of the synchronous rotating shaft 607 is sheathed with multiple connecting blocks 602. One end of the connecting block 602 is hingedly connected to a return spring shaft 605. The other end of the return spring shaft 605 is hingedly connected to the mounting bracket 1 at the bottom of the second insulating column 11. The combination of the isolation spring 403 and the return spring shaft 605 reduces the force required for state switching and improves the response speed during state switching.

[0036] The isolation switch row 8 is provided with a first hinge point 801 and a second hinge point 802. The first hinge point 801 is hinged to the lower outlet 7, and the second hinge point 802 is hinged to the push-pull rod 9. Multiple isolation switch rows 8 are provided, one on each side of the upper outlet 3. The second hinge point 802 is located near the first hinge point 801, leaving sufficient space for the push-pull rod 9 to move, preventing the push-pull rod 9 from colliding or interfering with the second insulating column 11 during rotation, thereby preventing damage to the isolation switch and affecting normal operation of the equipment.

[0037] The transmission handle 501 is located between the isolation handle 405 and the adjustment handle 601. When the isolation handle 405 is rotated counterclockwise, the transmission handle 501 also rotates the adjustment handle 601. The waist-shaped slot 502 and the arrangement of the connecting posts 1 406 and 2 608 ensure that when one handle is rotated, the other handle rotates simultaneously, driving the corresponding shaft to switch between the isolation and grounding switches.

[0038] refer to Figure 5When the isolation handle 405 rotates counterclockwise, the isolation knife crank arm 401 drives the push-pull rod 9 to be pushed out, and the isolation knife row 8 is separated from the upper insert 301.

[0039] When the adjustment handle 601 rotates counterclockwise, the synchronous rotating shaft 607 drives the grounding blade row 606 to fit with the lower inserting piece 302.

[0040] The present invention installs an upper outlet line 3 on the top of the insulating column 11, and is respectively provided with an isolating knife switch and a grounding knife switch that can be plugged therein. The isolating knife switch adjustment device 4 and the grounding knife switch adjustment device 6 are transmitted through a synchronous connection device 5. The isolating handle 405 is pulled, and the isolating handle 405 rotates to drive the isolating knife switch to separate from the upper outlet line 3; during the separation process of the two, the transmission handle 501 drives the adjustment handle 601 to rotate, so that the grounding knife row 606 is connected to the upper outlet line 3. The mechanical structure ensures that the operating sequence of first completely disconnecting the isolating knife switch and then closing the grounding knife switch is ensured, thereby eliminating fatal risks at the physical level and avoiding the problem of serious hidden dangers caused by maintenance workers' misoperation due to incorrect installation during the construction process.

[0041] It should be noted that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that various modifications, equivalent substitutions, and variations may be made to the present invention. However, as long as these modifications do not depart from the spirit of the present invention, they are intended to be within the scope of protection of the present invention. Furthermore, certain terms used in the specification and claims of this application are not intended to be limiting and are provided solely for ease of description.

Claims

1. A high-voltage disconnect switch that is easy to maintain, characterized by: The invention comprises a mounting frame (1), wherein a plurality of insulating columns (2) and insulating columns (11) are mounted on the top of the mounting frame (1), a lower outlet (7) is mounted on the top of the plurality of insulating columns (2), an upper outlet (3) is mounted on the top of the plurality of insulating columns (11), an upper plug (301) is provided on the top of the upper outlet (3), an isolation knife row (8) capable of being plugged into the upper plug (301) is hinged on the top of the lower outlet (7), and a lower plug is provided on the bottom of the upper outlet (3). (302), an isolation knife switch adjusting device (4) for lifting the isolation knife row (8) and a grounding knife switch adjusting device (6) capable of being plugged into the lower plug-in piece (302) are rotatably installed inside the mounting frame (1), and a synchronous connection device (5) is rotatably installed on the side wall of the mounting frame (1), and the synchronous connection device (5) includes a transmission handle (501), and the two ends of the transmission handle (501) are respectively connected to the isolation knife switch adjusting device (4) and the grounding knife switch adjusting device (6) to form a transmission connection.

2. A high-voltage disconnect switch that is easy to maintain according to claim 1, characterized in that: The isolating knife switch adjusting device (4) comprises an isolating main shaft (407) and an isolating handle (405); the grounding knife switch adjusting device (6) comprises a synchronous rotating shaft (607) and an adjusting handle (601); one end of the isolating handle (405) is mounted with a connecting column 1 (406); one end of the adjusting handle (601) is mounted with a connecting column 2 (608); both ends of the transmission handle (501) are provided with waist-shaped sliding grooves (502); the connecting column 1 (406) and the connecting column 2 (608) are both located on the inner side of the waist-shaped sliding groove (502) and slide.

3. The high-voltage disconnect switch that is easy to maintain according to claim 2, characterized in that: The isolation knife switch adjustment device (4) further includes an isolation knife crank arm (401) and a push-pull rod (9), the isolation main shaft (407) is rotatably connected to the mounting frame (1), the isolation knife crank arm (401) is sleeved on the outside of the isolation main shaft (407), the end of the isolation knife crank arm (401) is hinged to the push-pull rod (9), and the top of the push-pull rod (9) is hinged to the isolation knife row (8).

4. The high-voltage disconnect switch that is easy to maintain according to claim 3, characterized in that: The grounding knife switch adjustment device (6) further comprises a grounding knife arm (604), a grounding knife row (606), and a grounding rod (603). The grounding knife arm (604) is sleeved on the outside of the synchronous rotating shaft (607). The top end of the grounding knife arm (604) is fixedly connected to the grounding knife row (606). A plurality of the grounding knife rows (606) are commonly connected to the grounding rod (603). The grounding knife rows (606) can be connected to the lower insert (302).

5. The high-voltage disconnect switch that is easy to maintain according to claim 4, characterized in that: The outer side of the isolation main shaft (407) is provided with a plurality of connecting blocks (402), one end of the connecting block (402) is hinged with an isolation spring (403), the bottom end of the mounting frame (1) is provided with a connecting block (404), and the other end of the isolation spring (403) is hinged with the connecting block (404).

6. The high-voltage disconnect switch that is easy to maintain according to claim 4, characterized in that: The outer side of the synchronous rotating shaft (607) is provided with a plurality of connecting blocks three (602), one end of the connecting block three (602) is hinged with a return spring shaft (605), and the other end of the return spring shaft (605) is hinged with the mounting frame (1) at the bottom end of the insulating column two (11).

7. The high-voltage disconnect switch that is easy to maintain according to claim 2, characterized in that: The isolation knife row (8) is provided with a hinge point 1 (801) and a hinge point 2 (802), wherein the hinge point 1 (801) is hinged to the lower outlet line (7), and the hinge point 2 (802) is hinged to the push-pull rod (9), and the isolation knife row (8) is provided in plurality and is respectively located on both sides of the upper outlet line (3).

8. The high-voltage disconnect switch that is easy to maintain according to claim 2, characterized in that: The transmission handle (501) is located in the middle of the isolation handle (405) and the adjustment handle (601); when the isolation handle (405) rotates counterclockwise, the transmission handle (501) drives the adjustment handle (601) to rotate counterclockwise.

9. The high-voltage disconnector switch for easy maintenance according to claim 8, characterized in that: When the isolation handle (405) rotates counterclockwise, the isolation knife crank arm (401) drives the push-pull rod (9) to be pushed out, and the isolation knife row (8) is separated from the upper insert (301).

10. The high-voltage disconnect switch that is easy to maintain according to claim 9, characterized in that: When the adjustment handle (601) rotates counterclockwise, the synchronous rotating shaft (607) drives the grounding blade row (606) to fit with the lower insert (302).

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