Outdoor high-voltage drop-out fuse

Abstract

The utility model discloses an outdoor high-voltage drop-out fuse, which belongs to the field of drop-out fuses and comprises a high-strength insulator, a fuse tube and an operating ring, a connecting plate is fixedly mounted on the fuse tube, a quick disassembly and assembly component is mounted on the connecting plate, and the operating ring is mounted on the connecting plate through the quick disassembly and assembly component. The operation ring is composed of a main body ring, transparent arc-shaped pipes and noctilucent powder, the two transparent arc-shaped pipes are symmetrically and fixedly installed in the main body ring, the transparent arc-shaped pipes are filled with the noctilucent powder, the quick disassembly and assembly assembly is composed of an installation square rod, an installation spring, a spring baffle, a base plate and an insertion rod, the installation spring is arranged on the installation square rod in a sleeving mode, and the insertion rod is sleeved with the spring baffle. By arranging the operation ring composed of the main body ring, the transparent arc-shaped tube and the noctilucent powder, the operation ring can have a light-emitting indication function, so that an operator can accurately and rapidly find the operation ring at night with poor light, and convenience is brought to lifting or putting down the fuse tube to realize opening and closing operation of a circuit.

Description

Technical Field

[0001] The utility model relates to the field of drop fuses, and particularly relates to an outdoor high-voltage drop fuse. Background Art

[0002] An outdoor high-voltage drop fuse is a high-voltage protection electrical appliance installed on the high-voltage side of a distribution transformer or on the main or branch lines of a distribution line, and is used for short-circuit and overload protection of the transformer and the line, as well as for switching on and off load current. It mainly consists of an insulating support and a fuse tube. The static contacts are installed at both ends of the insulating support, and the moving contacts are installed at both ends of the fuse tube. The fuse tube is composed of an inner arc extinguishing tube and an outer phenolic paper tube or epoxy glass cloth tube. When the system is operating normally, the fuse tube forms a closed position with the help of the tension of the fuse wire. When a fault occurs in the system, such as overload or short circuit, the large current quickly melts the fuse wire inside the fuse, and the circuit is cut off under the action of the arc and gas. After the fuse wire melts, the lower moving contact loses tension and turns downwards, locking the mechanism releases the fuse tube, and the fuse tube drops to form an obvious open position.

[0003] The operating ring on the outdoor high-voltage drop fuse is an important part of the fuse. The operating ring is usually composed of an iron ring-shaped rod and an insulator. The design of the ring-shaped rod allows the operator to easily lift or lower the fuse tube. This function is particularly important when the fuse needs to be repaired, the fuse wire needs to be replaced, or other maintenance operations are carried out. By lifting or lowering the fuse tube through the operating ring, the switching on and off operation of the circuit can be achieved. When the fuse tube is in the lifted state, the moving contact and the static contact inside the fuse tube are in contact, and the circuit is in the closed state; when the fuse tube is lowered, the moving contact and the static contact are separated, and the circuit is cut off. Due to the lack of an indicating device on the traditional outdoor high-voltage drop fuse operating ring, it is difficult for the staff to accurately and quickly find the operating ring at night with poor light, which will bring inconvenience to lifting or lowering the fuse tube to achieve the switching on and off operation of the circuit. Therefore, an outdoor high-voltage drop fuse is needed to solve the above problems. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an outdoor high-voltage drop fuse, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An outdoor high-voltage drop-out fuse includes a high-strength insulator, a fuse tube, and an operating ring. A connecting plate is fixedly installed on the fuse tube, and a quick-disassembly and assembly component is installed on the connecting plate. The operating ring is installed on the connecting plate through the quick-disassembly and assembly component. The operating ring is composed of a main body ring, a transparent arc tube, and luminous powder. There are two transparent arc tubes, which are symmetrically and fixedly installed in the main body ring. The luminous powder is filled on the transparent arc tube. The quick-disassembly and assembly component is composed of an installation square rod, an installation spring, a spring baffle, a substrate, and a plug rod. The installation spring is sleeved on the installation square rod. The spring baffle and the substrate are respectively fixedly installed at both ends of the installation square rod. There are two plug rods, which are symmetrically and fixedly installed at one end of the substrate.

[0007] Preferably, the fuse tube is fixedly installed on the high-strength insulator.

[0008] Preferably, an installation groove is formed at one end of the connecting plate. A square hole and two first jacks are formed on the connecting plate, and both first jacks are communicated with the installation groove.

[0009] Preferably, the operating ring is installed in the installation groove. Two second jacks are formed on the main body ring. Two arc-shaped fixing grooves are symmetrically formed at both ends of the main body ring. The transparent arc tube is fixedly installed in the arc-shaped fixing groove.

[0010] Preferably, the installation square rod on the quick-disassembly and assembly component is slidably installed in the square hole. The spring baffle and the substrate are respectively located on both sides of the connecting plate. The installation spring is located on one side of the connecting plate and on one side of the spring baffle.

[0011] Preferably, the plug rod can be inserted into the first jack formed on the connecting plate and the second jack formed on the main body ring at the same time.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By setting an operating ring composed of a main body ring, a transparent arc tube, and luminous powder, the operating ring can have a self-luminous indication function, so that operators can conveniently and accurately find the operating ring quickly at night with poor light, which will bring convenience to lifting or lowering the fuse tube to realize the opening and closing operation of the circuit. By setting a connecting plate and a quick-disassembly and assembly component, and enabling the operating ring to be installed on the connecting plate through the quick-disassembly and assembly component, it is convenient to quickly replace the damaged operating ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the utility model;

[0015] Figure 2 is the structural schematic diagram of the connecting plate and the quick-disassembly and assembly component of the utility model;

[0016] Figure 3 This is the structural schematic diagram of the operation ring of the present utility model after disassembly;

[0017] Figure 4 This is the sectional view of the operation ring of the present utility model after disassembly.

[0018] In the figure: 1, high-strength insulator; 2, fuse tube; 3, connecting plate; 4, operation ring; 5, quick disassembly and assembly component; 6, installation groove; 7, first jack; 8, main body ring; 9, second jack; 10, arc-shaped fixing groove; 11, transparent arc-shaped tube; 12, luminous powder; 13, installation square rod; 14, installation spring; 15, spring baffle; 16, substrate; 17, inserting rod; 18, square hole. Specific embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, an outdoor high-voltage drop-out fuse includes a high-strength insulator 1, a fuse tube 2, and an operating ring 4. The fuse tube 2 is fixedly installed on the high-strength insulator 1. A connecting plate 3 is fixedly installed on the fuse tube 2. A quick-disassembly and assembly component 5 is installed on the connecting plate 3. The operating ring 4 is installed on the connecting plate 3 through the quick-disassembly and assembly component 5. The operating ring 4 is composed of a main body ring 8, a transparent arc tube 11, and luminous powder 12. There are two transparent arc tubes 11 which are symmetrically and fixedly installed inside the main body ring 8. The luminous powder 12 is filled on the transparent arc tube 11. The quick-disassembly and assembly component 5 is composed of an installation square rod 13, an installation spring 14, a spring baffle 15, a substrate 16, and a plug rod 17. The installation spring 14 is sleeved on the installation square rod 13. The spring baffle 15 and the substrate 16 are respectively fixedly installed at both ends of the installation square rod 13. There are two plug rods 17 which are symmetrically and fixedly installed at one end of the substrate 16. When in use, the luminous powder 12 on the operating ring 4 can play an indicating role for the operator at night, thereby indicating the specific position of the operating ring 4, and then it can facilitate the operator to accurately and quickly find the operating ring 4 at night with poor light, and further bring convenience for the operator to lift or lower the fuse tube 2 to realize the opening and closing operation of the circuit; when the operating ring 4 needs to be replaced after being damaged, the spring baffle 15 on the quick-disassembly and assembly component 5 can be first pushed, so that the spring baffle 15 approaches the connecting plate 3. At this time, the installation spring 14 will be compressed by the spring baffle 15. As the spring baffle 15 moves towards the connecting plate 3, it will drive the plug rod 17 to move through the installation square rod 13 and the substrate 16, and finally the plug rod 17 is removed from the second jack 9. At this time, the fixation of the operating ring 4 is released. Then the operating ring 4 can be taken out from the installation groove 6 on the connecting plate 3, and then a new operating ring 4 is installed in the installation groove 6, and at the same time, the second jack 9 and the first jack 7 are coaxially arranged. Then the spring baffle 15 is released. At this time, under the elastic force of the installation spring 14, the plug rod 17 will be inserted into the first jack 7 and the second jack 9. At this time, the operating ring 4 will be fixed, and thus the replacement of the operating ring 4 is completed.

[0021] Further, an installation groove 6 is opened at one end of the connecting plate 3. A square hole 18 and a first jack 7 are simultaneously opened on the connecting plate 3. There are two first jacks 7 and both are communicated with the installation groove 6. The operating ring 4 is installed in the installation groove 6. Two second jacks 9 are opened on the main body ring 8. Two arc-shaped fixing grooves 10 are symmetrically opened at both ends of the main body ring 8. The transparent arc tube 11 is fixedly installed in the arc-shaped fixing groove 10. The apertures of the first jack 7 and the second jack 9 are the same, and the width of the installation groove 6 is slightly larger than the width of the main body ring 8 on the operating ring 4. Thus, when the operating ring 4 is installed in the installation groove 6, it will not shake left and right. The transparent arc tube 11 is made of transparent plastic or glass. Thus, the light emitted by the luminous powder 12 can pass through the transparent arc tube 11, and finally indicate the specific position of the operating ring 4 for the operator, facilitating the operator to lift or lower the fuse tube 2 through the operating ring 4 to realize the opening and closing operation of the circuit.

[0022] Further, the mounting square rod 13 on the quick-disassembly and assembly component 5 is slidably mounted in the square hole 18. The spring baffle 15 and the substrate 16 are respectively located on both sides of the connecting plate 3. The mounting spring 14 is located on one side of the connecting plate 3 and on one side of the spring baffle 15. The insertion rod 17 can be inserted into the first insertion hole 7 formed in the connecting plate 3 and the second insertion hole 9 formed in the main body ring 8 at the same time. The mounting square rod 13 can slide in the square hole 18. When the operation ring 4 needs to be disassembled, the spring baffle 15 can be pushed towards the connecting plate 3. At this time, the mounting spring 14 will be compressed by the spring baffle 15, and the spring baffle 15 will drive the insertion rod 17 to move out of the second insertion hole 9 through the mounting square rod 13 and the substrate 16. When the operation ring 4 needs to be fixed, the spring baffle 15 can be released. At this time, under the elastic force of the mounting spring 14, the spring baffle 15 will move away from the connecting plate 3. And at this time, driven by the spring baffle 15, the insertion rod 17 will be inserted into the first insertion hole 7 and the second insertion hole 9.

[0023] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. The protection scope claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor high-voltage drop-out fuse, comprising a high-strength insulator (1), a fuse tube (2) and an operating ring (4), characterized in that: A connecting plate (3) is fixedly mounted on the fuse tube (2), a quick-release assembly (5) is mounted on the connecting plate (3), the operating ring (4) is mounted on the connecting plate (3) via the quick-release assembly (5), the operating ring (4) is composed of a main body ring (8), a transparent arc tube (11) and luminous powder (12), two transparent arc tubes (11) are symmetrically fixedly mounted in the main body ring (8), the luminous powder (12) is filled in the transparent arc tube (11), the quick-release assembly (5) is composed of a mounting square rod (13), a mounting spring (14), a spring baffle (15), a base plate (16) and an insertion rod (17), the mounting spring (14) is sleeved on the mounting square rod (13), the spring baffle (15) and the base plate (16) are respectively fixedly mounted on the two ends of the mounting square rod (13), and the insertion rod (17) is symmetrically fixedly mounted on one end of the base plate (16).

2. An outdoor high-voltage drop-out fuse according to claim 1, characterized in that: The fuse tube (2) is fixedly mounted on the high-strength insulator (1).

3. An outdoor high-voltage drop-out fuse according to claim 2, characterized in that: One end of the connecting plate (3) is provided with a mounting groove (6), and the connecting plate (3) is also provided with a square hole (18) and a first plug hole (7), and there are two first plug holes (7) both of which are connected to the mounting groove (6).

4. An outdoor high-voltage drop-out fuse according to claim 3, characterized in that: The operating ring (4) is installed in the installation groove (6), the main body ring (8) is provided with two second insertion holes (9), two arc-shaped fixing grooves (10) are symmetrically provided at both ends of the main body ring (8), and the transparent arc-shaped tube (11) is fixedly installed in the arc-shaped fixing groove (10).

5. An outdoor high-voltage drop-out fuse according to claim 4, characterized in that: The mounting square rod (13) on the quick-disassembly assembly (5) is slidably mounted in the square hole (18); the spring baffle (15) and the base plate (16) are respectively located on both sides of the connecting plate (3); the mounting spring (14) is located on one side of the connecting plate (3); and the mounting spring (14) is located on one side of the spring baffle (15).

6. An outdoor high-voltage drop-out fuse according to claim 5, characterized in that: The insertion rod (17) can be inserted into a first insertion hole (7) provided on the connection plate (3) and a second insertion hole (9) provided on the main body ring (8) at the same time.

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