Electrified installation tool for pole-mounted vacuum circuit breaker insulation shielding cover

Abstract

The invention relates to a live-line installation tool for an insulation shielding cover of a pole-mounted vacuum circuit breaker, the installation tool comprises an insulation plate and an insulation box, an operation item pile head is sleeved with the insulation plate, the insulation shielding cover is installed on the part, located on the side, away from the ground, of the insulation plate, of the operation item pile head, and a non-operation item pile head and an operation handle are covered with the insulation box; when the knife switch and the lower pile head are in a disconnected state, an insulating plate is arranged between the knife switch and the lower pile head; when the knife switch and the lower pile head are in a communication state, the knife switch and the lower pile head are covered with an insulation box. Compared with the prior art, the insulating shielding cover has the advantages that targeted insulating shielding is performed according to different shapes and requirements of an upper pile head, a lower pile head and a knife switch of the vacuum circuit breaker through the insulating plate and the insulating box, an electrified part is isolated, the insulating shielding cover can be mounted in an electrified state, and operation is facilitated; no matter the vacuum circuit breaker is in an open or closed state, that is, the knife switch is in a disconnected or connected state, corresponding shielding can be carried out, and the adaptive working condition range is wide.

Description

Technical Field

[0001] The invention relates to an insulating shielding cover installation tool, in particular to a live installation tool for an insulating shielding cover of a pole-mounted vacuum circuit breaker. Background Art

[0002] At present, with the continuous improvement of the ecological environment, line tripping accidents caused by birds nesting on poles and snakes climbing poles are common and the number is increasing year by year. Therefore, taking measures to avoid such accidents is an important means to improve power supply reliability. Among them, installing insulating shielding covers is a common method. However, there are two problems with existing insulating shielding covers: 1. The installation of insulating shielding covers is a power outage operation mode, and power outage is required during installation, which has a great impact on electricity users; 2. When installing the insulating shielding cover of the vacuum circuit breaker under high voltage, there is a lack of corresponding tools, and the live parts of the device cannot be effectively insulated and isolated during the operation, which poses a safety hazard to the operators.

[0003] After searching, the authorization announcement number CN212625249U discloses a combined pole-mounted circuit breaker insulating shielding cover installation structure, which specifically discloses: limiting mechanisms are arranged on both sides of the insulating cover, the limiting mechanisms include fixed columns respectively fixedly connected to the two sides of the insulating cover, a rectangular cavity begins to be formed on the front surface of the fixed column, the inner cavity of the rectangular cavity is slidably connected with a limiting clamp, the opposite sides of the two limiting clamps penetrate into the inner cavity of the insulating cover, the top and bottom of the limiting clamp away from the insulating cover are welded with springs, one end of the spring away from the limiting clamp is welded to the inner wall of the rectangular cavity, and an insulating protective shell is arranged on the rear side of the insulating cover.

[0004] However, the prior art belongs to the additional installation structure on the insulation cover, which is only applicable to a specific insulation cover. Therefore, how to design an insulation cover live installation tool with a wide range of applications is a technical problem that needs to be solved. Summary of the invention

[0005] The purpose of the present invention is to provide a live installation tool for an insulating shielding cover of a pole-mounted vacuum circuit breaker in order to overcome the defect that the prior art is only applicable to a specific insulating cover.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to one aspect of the present invention, there is provided a live installation tool for an insulating shielding cover of a pole-mounted vacuum circuit breaker, wherein the vacuum circuit breaker comprises an upper pile head, a lower pile head and a knife, the knife having an operating handle, the installation tool comprising an insulating plate and an insulating box, the upper pile head comprising an operating item pile head and a non-operating item pile head, the operating item pile head being sleeved with an insulating plate, the insulating shielding cover being installed on a portion of the operating item pile head located on a side of the insulating plate away from the ground, the non-operating item pile head and the operating handle being covered with an insulating box; when the knife and the lower pile head are in a disconnected state, an insulating plate is provided between the knife and the lower pile head; when the knife and the lower pile head are in a connected state, the knife and the lower pile head are covered with an insulating box.

[0008] As a preferred technical solution, the insulating plate sleeved on the work item pile head is a first insulating plate, which includes two first insulating plugs, and a mounting opening is provided on one side of the first insulating plug; the two first insulating plugs are installed opposite to each other and the mounting opening faces the work item pile head.

[0009] As a preferred technical solution, the two first insulating inserts partially overlap, and the overlapping portions are fixed by snaps.

[0010] As a preferred technical solution, a handle is provided on the other side of the first insulating plug.

[0011] As a preferred technical solution, the insulating box covering the non-operating pile head and the operating handle is a first insulating box, the first insulating box is a cube with one side open, and a handle is provided on the outer surface of the first insulating box.

[0012] As a preferred technical solution, a first insulating box covered on the operating handle is provided with a slot inside, and the connecting shaft of the operating handle is stuck in the slot.

[0013] As a preferred technical solution, the insulating plate between the switch and the lower pile head is a second insulating plate, which includes two second insulating plugs perpendicular to each other, one of the two second insulating plugs is inserted in the gap on one side of the lower pile head, and the other is located on the side of the lower pile head away from the ground.

[0014] As a preferred technical solution, the second insulating plate further comprises a third insulating plug, on which a handle is provided. The third insulating plug is perpendicular to the second insulating plug and is located between the two switches.

[0015] As a preferred technical solution, a third insulating plate is sleeved on the lower pile head, one side of the third insulating plate is provided with a mounting hole, and the other side extends to the outside of the vacuum circuit breaker; the lower pile head passes through the mounting hole, and the insulating shielding cover is installed on the part of the lower pile head located on the side of the third insulating plate away from the ground.

[0016] As a preferred technical solution, the insulating box covering the knife switch and the lower pile head is a second insulating box, and the second insulating box is a cube with two adjacent openings.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The present invention uses an insulating plate and an insulating box to perform targeted insulation shielding according to different shapes and requirements of the upper pile head, the lower pile head and the switch blade of the vacuum circuit breaker, isolates the live parts, and can install the insulation shielding cover in a live state, which is convenient for operation; no matter the vacuum circuit breaker is in an open or closed state, that is, the switch blade is in a disconnected or connected state, corresponding shielding can be performed, which is suitable for a wide range of working conditions;

[0019] 2) When the insulating shielding cover is installed on the working pile head of the present invention, the two first insulating plugs of the first insulating plate are inserted on the working pile head relatively and fixed to each other, thereby ensuring the stability of the insulating partition during the operation while ensuring the insulation performance; the first insulating plate can isolate the operator from the lower ground potential to ensure the safety of the operation;

[0020] 3) The non-operating pile head and the operating handle of the present invention adopt a cubic first insulating box, which can completely separate the non-operating pile head and the operating handle from the operator, and a handle is provided on the outer surface, which is convenient for taking during phase change work, and can also perform insulation shielding work without obstacles under some working conditions with a slightly long working distance; the connecting shaft of the operating handle is stuck in the card slot, which can make the insulation box more firmly installed;

[0021] 4) The second insulating plug of the second insulating plate of the present invention can separate the switch blade and the lower pile head, and the third insulating plug can separate different switches, which can play the role of insulation isolation and operation limit; the third insulating plate extends to the outside of the vacuum circuit breaker, which can limit the position of the operator and improve the safety of the operation;

[0022] 5) The second insulating box of the present invention can fully cover the switch of the entire device at one time, and is easy to install, has strong anti-interference ability, and effectively improves work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the first insulating plate of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the second insulating insert of the second insulating plate of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the third insulating insert of the second insulating plate of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the third insulating plate of the circuit breaker in the open state of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the third insulating plate of the circuit breaker in the closed state of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the first insulating box for covering the non-operating items of the pile head of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the first insulating box for covering the operating handle of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the second insulation box of the present invention;

[0031] The numbers in the figure show:

[0032] 1. First insulating plate, 11. First insulating plug, 12. Buckle, 21. Second insulating plug, 22. Third insulating plug, 3. Third insulating plate, 31. Mounting hole, 4. First insulating box, 5. Second insulating box, 6. Handle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] The present invention is suitable for live installation of 10kV pole-mounted vacuum circuit breaker insulation shielding covers, which converts traditional operations that require power outages into live operations, reduces the power outage area and duration, improves power supply reliability, and can quickly, safely and efficiently perform insulation reinforcement on 10kV pole-mounted vacuum circuit breakers in both open and closed states, effectively improving the insulation strength of the line device and enhancing the anti-interference ability of the line.

[0035] Example 1

[0036] The present invention provides a live installation tool for an insulation shielding cover of a pole-mounted vacuum circuit breaker, comprising an insulation plate and an insulation box. The tool is mainly used to shield the vacuum circuit breaker including an upper pile head, a lower pile head, a switch and an operating handle of the switch, and shields the switch when the switch is disconnected from the lower pile head.

[0037] The insulating plates include a first insulating plate 1 , a second insulating plate and a third insulating plate 3 .

[0038] like Figure 1As shown, the first insulating plate 1 is installed on the working pile head of the upper pile head, including two first insulating plugs 11, one side of the first insulating plug 11 is provided with an installation port, and the other side is provided with a handle 6, which is convenient for operators to hold and install. The two first insulating plugs 11 are relatively installed, and the installation port is aligned with the working pile head, surrounding the working pile head. The two first insulating plugs 11 are partially overlapped on one side with the installation port, and the overlapping part is connected and fixed by a buckle 12. The two-way relative installation and the fixing form of the buckle 12 can adapt to the narrow installation space of the working pile head. Under the premise of ensuring the insulation performance, the stability of the first insulating plate 1 during the operation is fully considered, and the upper pile head on the upper part of the first insulating plate 1 is equipped with an insulating protective cover. The first insulating plate 1 can isolate the operator from the lower ground potential to ensure the safety of the operation.

[0039] like Figure 2 and Figure 3 As shown, when the knife is disconnected from the lower pile head, the second insulating plate is installed between the knife and the lower pile head, including two mutually perpendicular second insulating plugs 21 and a third insulating plug 22. There is a gap between the lower pile head and the knife, one of which is inserted in the gap on one side of the lower pile head, and the other is located above the lower pile head, forming a two-sided encirclement of the lower pile head; the third insulating plug 22 is vertically inserted on the second insulating plug 21 located above the lower pile head, and is located between the three knifes, separating two adjacent knifes, and a handle 6 is provided on one side of the third insulating plug 22, which is convenient for operators to hold and install. When the knife is disconnected from the lower pile head, the live knife should be fully isolated from the lower ground potential pile head when performing live work, and the live knife is insulated and isolated from the lower pile head by the second insulating plug 21, and the three phases are isolated by the third insulating plug 22, which has an operation limit effect while playing an insulating isolation role, and fully considers the safety of operators. The second insulating plug 21 and the third insulating plug 22 are mechanically combined to form a whole after the device is installed, thereby avoiding insulation blind spots and being able to

[0040] It can cope with emergencies such as strong winds, and has excellent mechanical properties and stability.

[0041] like Figure 4As shown, the third insulating plate 3 is installed on the lower pile head for insulation. The third insulating plate 3 is sleeved on the lower pile head, and a mounting hole 31 is provided on one side, through which the lower pile head passes; the other side extends to the outside of the vacuum circuit breaker and is provided with a handle 6, which is convenient for operators to hold and install. The lower pile head on the upper part of the third insulating plate 3 is equipped with an insulating protective cover to form a combined insulation with the second insulating plate, so that the operator's hands are fully limited, and there is effective insulation above and below, which improves the safety of the operator. Since the switch is disconnected from the lower pile head at this time, the second insulating plate blocks one side of the lower pile head, and the third insulating plate 3 is installed from the side opposite to the second insulating plate, so one side of the mounting hole 31 is open, and a blocking piece is provided on the side of the third insulating plate, and a slide rail is provided on the blocking piece, and a slider is provided on the third insulating plate, and the slider can move along the slide rail, and the blocking piece moves to block the open side of the mounting hole 31, so that the third insulating plate is installed firmly.

[0042] The insulation box includes a first insulation box 4 .

[0043] like Figure 6 and Figure 7 As shown, the first insulating box 4 is covered on the non-operating pile head and the operating handle of the upper pile head. The first insulating box 4 is a cube with one side open. A handle 6 is provided on the outer surface to facilitate the operator to hold and install it. There is also a local opening adapted to the non-operating pile head and the protruding part of the operating handle. The box plates on both sides of the local opening of the first insulating box 4 covered on the non-operating pile head are extended for position limiting. An extended handle 6 is provided on the top. The length fully considers the position of the operator. In some operating conditions where the operating distance is slightly far, the insulation shielding work can also be carried out without obstacles. The switch operating handle is a grounding body and needs to be fully isolated when performing live work. The first insulating box 4 covered on the operating handle can fully cover and isolate the insulating operating handle. Since the first insulating box 4 is relatively long, the handle 6 on the top is annular, which is more stable to take. A handle 6 connecting shaft card slot is provided inside the first insulating box 4 body. The connecting shaft of the operating handle is stuck in the card slot. The first insulating box 4 can be firmly fixed above the insulating handle 6 to ensure insulation performance and improve operation safety.

[0044] The entire live installation tool is made of insulating material, including the buckles 12 or rivets used for connection, which are all insulating nails.

[0045] The specific application of the 10kV pole-mounted vacuum circuit breaker of the present invention in the open state is as follows:

[0046] 1. Install the first insulating plate 1 on the pile head of the upper pile head;

[0047] 2. Install the first insulation box 4 on the non-operating pile head of the upper pile head;

[0048] 3. Install the first insulating box 4 on the switch operating handle;

[0049] 4. Install the second insulating plate between the switch blade and the lower pile head;

[0050] 5. Install the third insulating plate 3 on the lower pile head.

[0051] Example 2

[0052] The present invention provides a live installation tool for an insulation shielding cover of a pole-mounted vacuum circuit breaker, comprising an insulation plate and an insulation box. The tool is mainly used to shield the vacuum circuit breaker including an upper pile head, a lower pile head, a switch and an operating handle of the switch, and shields the switch when the switch is connected to the lower pile head.

[0053] The insulating plate includes a first insulating plate 1 and a third insulating plate 3 .

[0054] like Figure 1 As shown, the first insulating plate 1 is installed on the working pile head of the upper pile head, including two first insulating plugs 11, one side of the first insulating plug 11 is provided with an installation port, and the other side is provided with a handle 6, which is convenient for operators to hold and install. The two first insulating plugs 11 are relatively installed, and the installation port is aligned with the working pile head, surrounding the working pile head. The two first insulating plugs 11 are partially overlapped on one side with the installation port, and the overlapping part is connected and fixed by a buckle 12. The two-way relative installation and the fixing form of the buckle 12 can adapt to the narrow installation space of the working pile head. Under the premise of ensuring the insulation performance, the stability of the first insulating plate 1 during the operation is fully considered, and the upper pile head on the upper part of the first insulating plate 1 is equipped with an insulating protective cover. The first insulating plate 1 can isolate the operator from the lower ground potential to ensure the safety of the operation.

[0055] like Figure 5 As shown, the third insulating plate 3 is installed on the lower pile head for insulation. The third insulating plate 3 is sleeved on the lower pile head, and a mounting hole 31 is provided on one side, through which the lower pile head passes; the other side extends to the outside of the vacuum circuit breaker and is provided with a handle 6, which is convenient for operators to hold and install. The lower pile head on the upper part of the third insulating plate 3 is equipped with an insulating protective cover to form a combined insulation with the second insulating plate, so that the operator's hands are fully limited, and there is effective insulation on both the upper and lower sides, which improves the safety of the operators. Since the knife switch is connected to the lower pile head at this time, the third insulating plate 3 is installed from both sides of the lower pile head, so it includes two insulating plugs with half a mounting hole 31 on one side, the two insulating plugs are installed oppositely, the mounting opening is aligned with the lower pile head, and the lower pile head is surrounded. The side of the two insulating plugs with the mounting opening is partially overlapped, and the overlapping part is connected and fixed by a buckle 12; there are two mounting holes 31, which are used to surround the lower pile head and the pile head between the lower pile head and the knife switch.

[0056] The insulation box includes a first insulation box 4 and a second insulation box 5 .

[0057] like Figure 6 and Figure 7As shown, the first insulating box 4 is covered on the non-operating pile head and the operating handle of the upper pile head. The first insulating box 4 is a cube with one side open. A handle 6 is provided on the outer surface to facilitate the operator to hold and install it. There is also a local opening adapted to the non-operating pile head and the protruding part of the operating handle. The box plates on both sides of the local opening of the first insulating box 4 covered on the non-operating pile head are extended for position limiting. An extended handle 6 is provided on the top. The length fully considers the position of the operator. In some operating conditions where the operating distance is slightly far, the insulation shielding work can also be carried out without obstacles. The switch operating handle is a grounding body and needs to be fully isolated when performing live work. The first insulating box 4 covered on the operating handle can fully cover and isolate the insulating operating handle. Since the first insulating box 4 is relatively long, the handle 6 on the top is annular, which is more stable to take. A handle 6 connecting shaft card slot is provided inside the first insulating box 4 body. The connecting shaft of the operating handle is stuck in the card slot. The first insulating box 4 can be firmly fixed above the insulating handle 6 to ensure insulation performance and improve operation safety.

[0058] like Figure 8 As shown, when the switch blade is connected to the lower pile head, the second insulating box 5 is covered on the switch blade and the lower pile head. Since the switch blade and the lower pile head are in a connected state, the second insulating plate cannot be used, so the second insulating box 5 is used. The second insulating box 5 is a cube with two adjacent openings, and a handle 6 is provided on the top of the outer surface. The handle 6 is ring-shaped. The second insulating box 5 can fully cover the entire device switch blade at one time, and the second insulating box 5 is easy to install, has strong anti-interference ability, and effectively improves work efficiency and safety.

[0059] The entire live installation tool is made of insulating material, including the buckles 12 or rivets used for connection, which are all insulating nails.

[0060] The specific application of the 10kV pole-mounted vacuum circuit breaker of the present invention in the closed state is as follows:

[0061] 1. Install the first insulating plate 1 on the pile head of the upper pile head;

[0062] 2. Install the first insulation box 4 on the non-operating pile head of the upper pile head;

[0063] 3. Install the first insulating box 4 on the switch operating handle;

[0064] 4. Install the second insulation box 5 on the switch blade and the lower pile head;

[0065] 5. Install the third insulating plate 3 on the lower pile head.

[0066] In summary, by using various combinations of live installation tools, the 10kV pole-mounted vacuum circuit breaker in the open or closed state can be fully insulated and isolated, so that the live installation of insulating protective covers can be carried out, the exposed points of the device can be reduced, the insulation level of the equipment can be improved, and the occurrence of short-circuit tripping accidents caused by interference such as foreign objects can be reduced.

[0067] The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker designed by the present invention is suitable for the electric power industry. The traditional power outage insulation shielding cover installation operation is transformed into a live operation mode, which effectively reduces the scope and duration of power outages, improves power supply reliability, and can efficiently, quickly and safely perform insulation reinforcement on line devices, reduce exposed points of line devices, improve the overall insulation strength of the line, improve the anti-interference ability of the power grid, effectively prevent the occurrence of line tripping accidents caused by foreign body interference, and improve the operation stability of the line.

[0068] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A live installation tool for an insulating shield of a pole-mounted vacuum circuit breaker, the vacuum circuit breaker comprising an upper pile head, a lower pile head and a switch, the switch having an operating handle, characterized in that: The installation tool comprises an insulating plate and an insulating box, the upper pile head comprises an operating pile head and a non-operating pile head, the operating pile head is sleeved with an insulating plate, an insulating shielding cover is installed on the part of the operating pile head located on the side of the insulating plate away from the ground, and an insulating box is covered on the non-operating pile head and the operating handle; when the knife switch and the lower pile head are in a disconnected state, an insulating plate is provided between the knife switch and the lower pile head; when the knife switch and the lower pile head are in a connected state, an insulating box is covered on the knife switch and the lower pile head.

2. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The insulating plate sleeved on the working pile head is a first insulating plate (1), the first insulating plate (1) comprises two first insulating plugs (11), one side of the first insulating plugs (11) is provided with a mounting opening; the two first insulating plugs (11) are mounted opposite to each other and the mounting opening faces the working pile head.

3. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 2, characterized in that: The two first insulating inserts (11) partially overlap, and the overlapping portion is fixed by a buckle (12).

4. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 2, characterized in that: A handle (6) is provided on the other side of the first insulating plug (11).

5. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The insulating box covering the non-operating pile head and the operating handle is a first insulating box (4). The first insulating box (4) is a cube with one side open. A handle (6) is provided on the outer surface of the first insulating box (4).

6. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 5, characterized in that: A first insulating box (4) covered on the operating handle is provided with a slot inside, and the connecting shaft of the operating handle is clamped in the slot.

7. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The insulating plate between the switch blade and the lower pile head is a second insulating plate, comprising two second insulating plugs (21) perpendicular to each other, one of the two second insulating plugs (21) being inserted into the gap on one side of the lower pile head, and the other being located on the side of the lower pile head away from the ground.

8. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 7, characterized in that: The second insulating plate further comprises a third insulating plug (22), on which a handle (6) is provided. The third insulating plug (22) is perpendicular to the second insulating plug (21) and is located between the two switches.

9. The live installation tool for the insulation shielding cover of a pole-mounted vacuum circuit breaker according to claim 1, characterized in that: A third insulating plate (3) is sleeved on the lower pile head, a mounting hole (31) is provided on one side of the third insulating plate (3), and the other side extends to the outside of the vacuum circuit breaker; the lower pile head passes through the mounting hole (31), and the insulating shielding cover is installed on the part of the lower pile head located on the side of the third insulating plate (3) away from the ground.

10. The live installation tool for the insulation shielding cover of a pole mounted vacuum circuit breaker according to claim 1, characterized in that: The insulating box covering the switch blade and the lower pile head is a second insulating box (5), and the second insulating box (5) is a cube with two adjacent openings.

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