Insulation protective cover and installation tool for vacuum circuit breaker

Abstract

The present invention discloses an insulating protective cover and an installation tool for a vacuum circuit breaker, wherein the insulating protective cover comprises a protective cover body, a first connecting plate and a second connecting plate, wherein the protective cover body is used to wrap the wiring terminal of the vacuum circuit breaker; the first connecting plate is fixedly arranged at the front end of the protective cover body, the left end of the first connecting plate is hinged with the left end of the second connecting plate, a fixing plate is arranged at the right end of the first connecting plate, a first fixing hole is opened on the fixing plate, and a first fixing piece is arranged on one side of the fixing plate; a second fixing hole is arranged at the right end of the second connecting plate, and a second fixing piece is arranged on one side of the fixing plate, and the first connecting plate and the second connecting plate are arranged to form a second cavity for wrapping the insulator of the vacuum circuit breaker; the insulating protective cover of the vacuum circuit breaker provided by the present invention has a structural design that fits the wiring terminal and the rubber insulator of the vacuum circuit breaker, has the advantage of high connection stability, and can play an effective protective role.

Description

Technical Field

[0001] The invention relates to the technical field of insulation protection of electric power equipment, and in particular to an insulation protection cover and an installation tool for a vacuum circuit breaker. Background Art

[0002] The vacuum circuit breaker is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum. It is suitable for frequent operation and has the advantage of arc extinguishing without maintenance. It is widely used in distribution networks.

[0003] Existing vacuum circuit breakers are large in size and have short spacing between their three-phase terminal blocks, which can easily cause mice to climb or other small animals to come into contact with them, causing two-phase or three-phase arcing in the vacuum circuit breaker and unexpected failure of the overhead line, which to some extent affects the stability of power distribution and reduces power supply reliability. In addition, the current protection work of vacuum circuit breakers requires power outage operations, which have high operating costs.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an insulating protective cover for a vacuum circuit breaker, whose structural design fits the terminal and rubber insulator of the vacuum circuit breaker and has the advantages of high connection stability and good protective effect.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An insulating protective cover for a vacuum circuit breaker comprises a protective cover body, a first connecting plate and a second connecting plate, wherein the protective cover body is provided with a first cavity with an opening facing downward and which can be inserted into a terminal of a vacuum circuit breaker; a rear end of the first connecting plate is connected to the protective cover body, a left end of the first connecting plate is hinged to a left end of the second connecting plate, a fixing plate is provided at the right end of the first connecting plate, a first fixing hole is provided on the fixing plate, a first fixing piece is provided on one side of the fixing plate, a second fixing hole corresponding to the first fixing hole is provided at the right end of the second connecting plate, a second fixing piece cooperating with the first fixing piece is provided on the second connecting plate, and the first connecting plate and the second connecting plate are arranged to form a second cavity for wrapping an insulator of a vacuum circuit breaker.

[0008] In the insulating protective cover of the vacuum circuit breaker, the first connecting plate is an arc-shaped connecting plate with an opening facing downward, and the second connecting plate is an arc-shaped connecting plate with an opening facing upward.

[0009] In the insulating protective cover of the vacuum circuit breaker, a plurality of friction balls are evenly arranged on the inner surface of the first connecting plate and the inner surface of the second connecting plate.

[0010] In the insulating protective cover of the vacuum circuit breaker, the first fixing member includes a block arranged on one side of the fixing plate, and the second fixing member includes a slot plate arranged on one side of the second connecting plate, and a plurality of slots are evenly opened on the surface of the slot plate, and the bottom of the slot plate is connected to the second connecting plate.

[0011] The insulating protective cover of the vacuum circuit breaker further comprises a three-phase identification piece, and the three-phase identification piece is detachably arranged on the top of the protective cover body.

[0012] In the insulating protective cover of the vacuum circuit breaker, a connection hole is provided on the top of the protective cover body, and a clamping block which is clamped and connected with the connection hole is provided at the bottom of the three-phase identification piece.

[0013] In the insulating protective cover of the vacuum circuit breaker, the protective cover body, the first connecting plate, the second connecting plate and the fixing plate are respectively made of transparent PC material.

[0014] The present invention also provides an installation tool for installing the insulating protective cover of the vacuum circuit breaker as mentioned above, the installation tool comprising a first tool, a second tool and a third tool, the first tool comprising a first insulating operating rod, a first mounting piece, a sliding rod and a second mounting piece, the sliding rod being fixed at the top of the first insulating operating rod, the first mounting piece being fixed at the top of the sliding rod, the second mounting piece being slidably arranged on the sliding rod, the first mounting piece and the second mounting piece being arranged to surround and form a third cavity for wrapping the first connecting plate and the second connecting plate; the second tool comprising a second insulating operating rod and a third mounting piece fixed at the top of the second insulating operating rod, the third mounting piece being used to push the second mounting piece to move up and down along the sliding rod; the third tool comprising a third insulating operating rod and a fourth mounting piece fixed at the top of the third insulating operating rod, the fourth mounting piece being provided with a third fixing hole.

[0015] In the installation tool, the first installation member is provided with a first receiving groove for receiving the first connecting plate, and the second installation member is provided with a second receiving groove for receiving the second connecting plate.

[0016] In the installation tool, the first mounting member, sliding rod, second mounting member, third mounting member and fourth mounting member are respectively made of nylon material; the first insulating operating rod, second insulating operating rod and third insulating operating rod are respectively made of insulating fiberglass material.

[0017] Beneficial effects:

[0018] The present invention provides an insulating protective cover and an installation tool for a vacuum circuit breaker, which have the following advantages:

[0019] (1) The shape of the second cavity formed by the first connecting plate and the second connecting plate fits the insulator of the vacuum circuit breaker, thereby improving the connection stability between the insulating protective cover and the vacuum circuit breaker;

[0020] (2) The matching connection between the first fixing member and the second fixing member realizes the first locking between the first connecting plate and the second connecting plate, and the matching connection between the first fixing hole and the second fixing hole realizes the second locking between the first connecting plate and the second connecting plate. The double locking structure can effectively improve the connection stability between the second cavity and the vacuum circuit breaker insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the insulating protective cover provided by the present invention;

[0022] Figure 2 A schematic structural diagram of an insulating protective cover from another perspective provided by the present invention;

[0023] Figure 3 An enlarged view of part A provided by the present invention;

[0024] Figure 4 A schematic diagram of the structure of the installation tool provided by the present invention;

[0025] Figure 5 A practical state diagram of the insulating protective cover and the installation tool provided by the present invention;

[0026] Figure 6 A diagram showing the working principle of the insulating protective cover provided by the present invention.

[0027] Explanation of main component symbols: 1-protective cover body, 2-first connecting plate, 3-second connecting plate, 31-second fixing hole, 32-card slot plate, 33-friction ball, 4-fixing plate, 41-first fixing hole, 42-card block, 5-three-phase identification member, 61-first insulating operating rod, 62-first mounting member, 63-sliding rod, 64-second mounting member, 641-second accommodating groove, 71-second insulating operating rod, 72-third mounting member, 81-third insulating operating rod, 82-fourth mounting member, 821-third fixing hole, 9-vacuum circuit breaker. DETAILED DESCRIPTION

[0028] The present invention provides an insulating protective cover and an installation tool for a vacuum circuit breaker. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0029] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and should not be understood as limitations on the present invention; in addition, the terms "installation", "connection", etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0030] See also Figures 1 to 3 The present invention provides an insulating protective cover for a vacuum circuit breaker, comprising a protective cover body 1, a first connecting plate 2 and a second connecting plate 3, wherein the protective cover body 1 is provided with a first cavity with an opening facing downward and capable of being inserted into a terminal of a vacuum circuit breaker 9; the rear end of the first connecting plate 2 is connected to the protective cover body 1, the left end of the first connecting plate 2 is hinged to the left end of the second connecting plate 3, a fixing plate 4 is provided at the right end of the first connecting plate 2, a first fixing hole 41 is provided on the fixing plate 4, a first fixing piece is provided on one side of the fixing plate 4, a second fixing hole 31 corresponding to the first fixing hole 41 is provided on the right end of the second connecting plate 3, a second fixing piece matched with the first fixing piece is provided on the second connecting plate 3, and the first connecting plate 2 and the second connecting plate 3 are surrounded to form a second cavity for wrapping the insulator of the vacuum circuit breaker 9.

[0031] In this embodiment, the first connecting plate 2 and the protective cover body 1, the first connecting plate 2 and the first fixing plate 4, the first fixing plate 4 and the first fixing piece, and the second connecting plate 3 and the second fixing piece are all integrally formed structures; in actual operation, the first fixing hole 41 and the second fixing hole 31 can be connected by a hexagonal screw. Therefore, the first fixing hole 41 can be set as a hexagonal hole with a thread inside. The bolt connection relationship between the first fixing hole 41 and the second fixing hole 31 is achieved by the hexagonal screw. The second fixing hole 31 plays a guiding role, guiding the hexagonal screw to be inserted into the first fixing hole 41 and locked.

[0032] The insulating protective cover of the vacuum circuit breaker provided by the present invention comprises a first connecting plate 2 and a second connecting plate 3. The shape of the second cavity formed by the first connecting plate 2 and the second connecting plate 3 fits the insulator of the vacuum circuit breaker 9, thereby improving the stability of the connection between the insulating protective cover and the vacuum circuit breaker 9. The protective cover body 1 is in an inverted U shape, which does not affect the observation angle of the operation and maintenance personnel, and can wrap the wiring terminals of the vacuum circuit breaker 9, thereby playing an effective protective role, preventing small animals from contacting the wiring terminals, causing the vacuum circuit breaker 9 to have a two-phase or three-phase arc flash phenomenon, causing an unexpected failure of the overhead line, and improving the stability of power distribution. In addition, a second fixing member and a first fixing member that are matched and connected are provided to realize the first locking of the first connecting plate 2 and the second connecting plate 3. A first fixing hole 41 and a second fixing hole 31 that are matched and connected are also provided to realize the second locking of the first connecting plate 2 and the second connecting plate 3. The double locking structure improves the stability of the connection between the second cavity and the insulator of the vacuum circuit breaker.

[0033] Preferably, a first hook is provided on the left side of the first connecting plate 2, and a second hook is provided on the left side of the second connecting plate 3. The second hook is hinged to the first hook through a rotating shaft and rotates around the rotating shaft so that the second connecting plate 3 can move up and down within a certain angle range relative to the first connecting plate 2.

[0034] In the actual production process, since there is a certain angle between the connection terminals of different phase lines and the insulators, the first connecting plate 2 can be horizontally tilted to the left or right to a certain extent relative to the protective cover body 1.

[0035] For further information, see Figure 1 and Figure 2 The first connecting plate 2 is an arc-shaped connecting plate with an opening downward, and the first connecting plate 2 is consistent with the upper part of the insulator of the vacuum circuit breaker 9; the second connecting plate 3 is an arc-shaped connecting plate with an opening upward, and the second connecting plate 3 is consistent with the lower part of the insulator of the vacuum circuit breaker 9; the first connecting plate 2 and the second connecting plate 3 cooperate to wrap the insulator of the vacuum circuit breaker 9, thereby improving the connection stability between the insulating protective cover and the vacuum circuit breaker 9.

[0036] For further information, see Figure 1 and Figure 3 A number of friction balls 33 are evenly arranged on the inner surface of the first connecting plate 2 and the inner surface of the second connecting plate 3, respectively, which increase the friction between the first connecting plate 2 and the insulator of the vacuum circuit breaker 9 and between the second connecting plate 3 and the insulator of the vacuum circuit breaker 9, respectively, so that the first connecting plate 2 and the second connecting plate 3 are closer to the insulator of the vacuum circuit breaker 9, thereby improving the stability of the connection.

[0037] Preferably, the outer surfaces of the first connecting plate 2 and the second connecting plate 3 can be frosted to enhance the friction between the first connecting plate 2 and the installation tool and between the second connecting plate 3 and the installation tool, making it easier for workers to use the installation tool to perform live installation of the insulating protective cover.

[0038] For further information, see Figure 3 The first fixing member includes a block 42 arranged on one side of the fixing plate 4, and the second fixing member includes a slot plate 32 arranged on one side of the second connecting plate 3, and a plurality of slots are evenly opened on the surface of the slot plate 32, and the bottom of the slot plate 32 is connected to the second connecting plate 3; in this embodiment, the block 42 includes two, and the two blocks 42 are respectively arranged on the front and rear sides of the fixing plate 4, and the slot plates 32 correspondingly include two, and the two slot plates 32 are respectively arranged on the front and rear sides of the second connecting plate 3.

[0039] For further information, see Figure 1 and Figure 2 The insulating protective cover of the vacuum circuit breaker also includes a three-phase identification piece 5, which is detachably arranged on the top of the protective cover body 1; the three-phase identification piece 5 is arranged to facilitate the operation and maintenance personnel to identify the route phase line information and improve work efficiency; in this embodiment, the three-phase identification piece 5 is made of silicone injection molding, and has three colors of red, yellow and green, and its size is 100 mm long, 17 mm wide and 2 mm thick.

[0040] For further information, see Figure 1 and Figure 2 A connecting hole is provided at the top of the protective cover body 1, and a snap-in block which is snap-connected with the connecting hole is provided at the bottom of the three-phase identification piece 5; in this embodiment, the three-phase identification piece 5 and the snap-in block are an integrally formed structure, and the snap-in block is connected with the connecting hole to realize a detachable connection between the three-phase identification piece 5 and the protective cover body 1.

[0041] Preferably, the protective cover body 1, the first connecting plate 2, the second connecting plate 3, the fixing plate 4 and the card slot plate 32 are all made of transparent PC material, that is, the insulating protective cover as a whole is made of transparent PC material; the insulating protective cover made of transparent PC material is convenient for operation and maintenance personnel to observe the internal situation during daily inspections, thereby improving operation and maintenance efficiency; and the PC material has the advantages of high voltage and high temperature resistance, and can withstand high temperatures of 750 degrees Celsius. If a fire accident occurs, the insulating protective cover will be burned to a certain extent, but there will be no burning phenomenon, which can avoid secondary damage to the lines and other equipment; and it can withstand 34kV high voltage strikes, and can meet the requirements of live operation.

[0042] See also Figure 4 and Figure 5The present invention also provides a corresponding installation tool for installing the insulating protective cover of the vacuum circuit breaker as described above, the installation tool includes a first tool, a second tool and a third tool, the first tool includes a first insulating operating rod 61, a first mounting member 62, a slide bar 63 and a second mounting member 64, the slide bar 63 is fixed to the top of the first insulating operating rod 61, the first mounting member 62 is fixed to the top of the slide bar 63, the second mounting member 64 is slidably arranged on the slide bar 63, the first mounting member 62 and the second mounting member 64 are formed to wrap the first connecting plate 2 and the third connecting plate 2. The third cavity of the second connecting plate 3; the second tool includes a second insulating operating rod 71 and a third mounting member 72 fixed to the top of the second insulating operating rod 71, the third mounting member 72 is used to push the second mounting member 64 to move up and down along the sliding rod, specifically, the third mounting member 72 is provided with a through groove opening upward, which fits the shape of the bottom of the second mounting member 64 to facilitate pushing the second mounting member 64; the third tool includes a third insulating operating rod 81 and a fourth mounting member 82 fixed to the top of the third insulating operating rod 81, and the fourth mounting member 82 is provided with a third fixing hole 821.

[0043] In this embodiment, the first insulating operating rod 61 and the slide bar 63, the slide bar 63 and the first mounting member 62, the second insulating operating rod 71 and the third mounting member 72, and the third insulating operating rod 81 and the fourth mounting member 82 are connected by bolts; a through hole matching the shape and size of the slide bar 63 is provided on the connection side between the second mounting member 64 and the slide bar 63, so that the second mounting member 64 can slide relative to the slide bar 63; in actual operation, the third fixing hole 821 is used to clamp the hexagonal screw to realize the connection between the hexagonal screw and the first fixing hole 41 and the second fixing hole 31, and therefore, the third fixing hole 821 is set as a hexagonal hole.

[0044] For further information, see Figure 4 The first mounting member 62 is provided with a first receiving groove for receiving the first connecting plate 2, the shape of the first receiving groove is in line with the first connecting plate 2, and it is an arc-shaped groove structure opening downward; the second mounting member 64 is provided with a second receiving groove 641 for receiving the second connecting plate 3, the shape of the second receiving groove 641 is in line with the second connecting plate 3, and it is an arc-shaped groove structure opening upward.

[0045] Preferably, the first mounting member 62, the slide rod 63, the second mounting member 64, the third mounting member 72 and the fourth mounting member 82 are made of nylon material, which can reduce the weight of the first tool, the second tool and the third tool while meeting the insulation conditions, thereby reducing the difficulty of operation for the staff; the first insulating operating rod 61, the second insulating operating rod 71 and the third insulating operating rod 81 made of insulating glass fiber material have the advantages of high strength and high hardness, and can withstand a voltage of more than 45KV. Compared with traditional insulating rods (link rods), they have a smaller diameter, higher hardness, lighter material and longer service life; in this embodiment, the first insulating operating rod 61, the second insulating operating rod 71 and the third insulating operating rod 81 can be made of insulating glass fiber material with an outer diameter of 26 mm and an inner diameter of 20 mm.

[0046] See also Figure 6 When the construction unit needs to perform live installation, according to the phase line situation, first connect the three-phase identification piece 5 of the corresponding color to the connecting hole of the protective cover body 1 through the clamping block to complete the installation of the insulating protective cover; then, the staff assembles the first tool, the second tool and the third tool respectively, and then places the nut corresponding to the hexagonal screw in the first fixing hole 41 to ensure that the nut will not fall out, and at the same time places the bolt in the third fixing hole 821 to ensure that it will not fall out, and finally, the first connecting plate 2 is clamped into the first receiving groove of the first mounting member 62.

[0047] Furthermore, the worker wears standard insulating gloves and insulating boots, holds the first tool, and slowly moves the insulating protective cover up the tower to the terminal of the vacuum circuit breaker 9, and then presses the first connecting plate 2 onto the insulator of the vacuum circuit breaker 9, keeping it pressed; the worker then uses the second tool to make the third mounting member 72 contact with the second mounting member 64, pushes the second mounting member 64 upward, and the second mounting member 64 slides on the slide bar 63 until the slot plate 32 of the second connecting plate 3 is engaged with the block 42, thereby realizing the first connection between the first connecting plate 2 and the second connecting plate 3. ; Then the staff puts down the second tool, sends the third clamp with the hexagonal bolt to the second fixing hole 31, and realizes the second locking of the first connecting plate 2 and the second connecting plate 3 by sending the hexagonal bolt into the first fixing hole 41 and the second fixing hole 31 and tightening them. The first connecting plate 2 and the first connecting plate 2 are tightly attached to the insulator of the vacuum circuit breaker 9, so that the insulating protective cover will not be loose or shaking on the vacuum circuit breaker 9, thereby improving the stability of the connection; finally, the first tool and the third tool are removed to complete the live installation operation of the insulating protective cover of the vacuum circuit breaker.

[0048] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. An insulating protective cover for a vacuum circuit breaker, characterized in that: The invention comprises a protective cover body, a first connecting plate and a second connecting plate, wherein the protective cover body is provided with a first cavity with an opening facing downward and capable of being inserted into a terminal of a vacuum circuit breaker; the rear end of the first connecting plate is connected to the protective cover body, the left end of the first connecting plate is hinged to the left end of the second connecting plate, a fixing plate is provided at the right end of the first connecting plate, a first fixing hole is provided on the fixing plate, a first fixing piece is provided on one side of the fixing plate, a second fixing hole corresponding to the first fixing hole is provided at the right end of the second connecting plate, a second fixing piece matched with the first fixing piece is provided on the second connecting plate, and the first connecting plate and the second connecting plate are arranged to form a second cavity for wrapping the insulator of the vacuum circuit breaker; The first connecting plate is an arc-shaped connecting plate with an opening downward, and the second connecting plate is an arc-shaped connecting plate with an opening upward; A plurality of friction balls are evenly arranged on the inner surface of the first connecting plate and the inner surface of the second connecting plate; The first fixing member includes a clamping block arranged on one side of the fixing plate, and the second fixing member includes a clamping slot plate arranged on one side of the second connecting plate, a plurality of clamping slots are evenly formed on the surface of the clamping slot plate, and the bottom of the clamping slot plate is connected to the second connecting plate; It also includes a three-phase identification member, which is detachably arranged on the top of the protective cover body; A connection hole is provided on the top of the protective cover body, and a clamping block which is clamped and connected with the connection hole is provided at the bottom of the three-phase identification piece; A first hook is provided on the left side of the first connecting plate, and a second hook is provided on the left side of the second connecting plate. The second hook is hinged to the first hook through a rotating shaft and rotates around the rotating shaft, so that the second connecting plate can move up and down within a certain angle range relative to the first connecting plate; The protective cover body, the first connecting plate, the second connecting plate and the fixing plate are respectively made of transparent PC material; The protective cover body is in an inverted U shape so as to completely cover the connection terminal of the vacuum circuit breaker without affecting the viewing angle of the operation and maintenance personnel; The first connecting plate is an arc-shaped connecting plate with an opening downward, and the first connecting plate is matched with the upper part of the insulator of the vacuum circuit breaker; the second connecting plate is an arc-shaped connecting plate with an opening upward, and the second connecting plate is matched with the lower part of the insulator of the vacuum circuit breaker; the first connecting plate and the second connecting plate cooperate to wrap the insulator of the vacuum circuit breaker to improve the connection stability between the insulating protective cover and the vacuum circuit breaker.

2. An installation tool for installing the insulating protective cover of the vacuum circuit breaker according to claim 1, characterized in that: The utility model comprises a first tool, a second tool and a third tool, wherein the first tool comprises a first insulating operating rod, a first mounting member, a sliding rod and a second mounting member, wherein the sliding rod is fixedly arranged at the top of the first insulating operating rod, the first mounting member is fixedly arranged at the top of the sliding rod, the second mounting member is slidably arranged on the sliding rod, and the first mounting member and the second mounting member are arranged to form a third cavity for wrapping the first connecting plate and the second connecting plate; the second tool comprises a second insulating operating rod and a third mounting member fixedly arranged at the top of the second insulating operating rod, and the third mounting member is used to push the second mounting member to move up and down along the sliding rod; the third tool comprises a third insulating operating rod and a fourth mounting member fixedly arranged at the top of the third insulating operating rod, and the fourth mounting member is provided with a third fixing hole.

3. An installation tool according to claim 2, characterized in that: The first mounting member is provided with a first receiving groove for receiving the first connecting plate, and the second mounting member is provided with a second receiving groove for receiving the second connecting plate.

4. An installation tool according to claim 2, characterized in that: The first mounting member, sliding rod, second mounting member, third mounting member and fourth mounting member are respectively made of nylon material; the first insulating operating rod, second insulating operating rod and third insulating operating rod are respectively made of insulating fiberglass material.

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