High-voltage fuse
By setting an arc-shaped first guide rod on the fuse base static contact of the high-voltage fuse and a V-shaped second guide rod on the mounting bracket, the problem of the fuse-carrying part deviating from the direction when closing is solved. The accuracy and effectiveness of closing are achieved.
Patent Information
- Application Number
- CN202411431069.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-21
AI Technical Summary
When the traditional outdoor AC high-voltage fuse is closed, the loading fuse is prone to deviating from the direction and cannot effectively engage with the static contacts at the fuse base, resulting in the difficulty of closing the fuse successfully.
A high -pressure fuse is designed, which is used to set the first guide rod on the static contact of the fuse base, and set the second -oriented rod on the installation bracket. The static contact mesh.
Through the double guide structure, the fuse-carrying contact is not easy to deviate and can effectively mesh with the static contact of the fuse base to achieve accurate and effective closing.
Smart Images
Figure CN119340176A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of power distribution equipment, and in particular relates to a high-voltage fuse. Background Art
[0002] Fuse is the simplest protective electrical appliance, which is used to protect electrical equipment from overload and short-circuit current. Different types of high-voltage fuses such as outdoor drop-out type and indoor type are selected according to installation conditions and uses. For some special equipment, special series of high-voltage fuses should be selected. It is mainly used for overload and short-circuit protection of electrical equipment such as high-voltage transmission lines, voltage transformers, and voltage transformers. Its structure generally includes fuse tubes, contact conductive parts, supporting insulators and bases. The fuse tube is filled with fine quartz sand for arc extinguishing. The fuse is a metal wire or metal sheet made of metal materials with a low melting point, which is connected in series in the protected circuit. When the circuit or the equipment in the circuit is overloaded or fails, the fuse heats up and melts, thereby cutting off the circuit to achieve the purpose of protecting the circuit or equipment.
[0003] Among them, outdoor AC high-voltage fuses are more suitable for overload and short-circuit protection of high-voltage transmission lines and distribution transformers. The fuse is equipped with a device to cut off the rated load current, which acts as a load switch and is an important electrical equipment for the protection of transmission lines and transformers. At present, outdoor AC high-voltage fuses install the fuse base on the insulating pillar. The fuse base contacts are engaged with the fuse carrier contacts. The fuse carrier plays a role of fuse protection and also acts as a switch. After closing the circuit breaker, the fuse carrier is engaged with the fuse base contact. When the traditional structure is closed, the fuse carrier is easy to deviate from the direction and cannot be well engaged with the static contact of the fuse base, resulting in the phenomenon that the closing is not easy to succeed. Summary of the invention
[0004] In view of the defect in the prior art that the fuse carrier is easily deviated from the direction and cannot be well engaged with the static contact of the fuse base when closing the circuit breaker, the present invention provides a high-voltage fuse to solve the above technical problem.
[0005] A high-voltage fuse comprises an insulating support, a fixed contact of a fuse base arranged on the insulating support, and a moving contact of the fuse base, wherein a fuse carrier is meshed on the moving contact of the fuse base, and the other end of the fuse carrier can be meshed on the fixed contact of the fuse base to form a closing circuit; first guide rods are arranged on both sides of the meshing position between the fixed contact of the fuse base and the fuse carrier, and the first guide rods are two parallel guide rods bent into an arc shape; a mounting bracket is arranged on the insulating support, and two second guide rods are arranged on a side of the mounting bracket close to the fuse carrier, and the two second guide rods are fixed on the mounting bracket in a V-shape.
[0006] A further improvement of the technical solution is that the insulating pillars adopt ceramic insulating pillars.
[0007] A further improvement of the technical solution is that an insulating protection structure and an end conductive cap are provided at one end of the fuse carrier close to the static contact of the fuse base, the end conductive cap is engaged with the static contact of the fuse base to form a closed switch, and the insulating protection structure is provided at the lower part of the end conductive cap.
[0008] A further improvement of the technical solution is that the insulating protection structure includes a ceramic protection ring sleeved on the periphery of the fuse carrier, and a switch opening and closing pull ring is provided on one side of the ceramic protection ring.
[0009] A further improvement of the technical solution is that the insulating protection structure also includes a compression spring arranged between the end conductive cap and the ceramic protection ring.
[0010] A further improvement of the technical solution is that the insulating protection structure also includes an insulating sleeve arranged between the compression spring and the internal fuse carrier.
[0011] A further improvement of the technical solution is that an insulating protective coating is provided on one side of the first guide rod and the second guide rod close to the fuse carrier.
[0012] Further improvements of the technical solution include an incoming line mounting bracket and an outgoing line mounting bracket, wherein the incoming line mounting bracket is arranged on the side of the insulating support close to the static contact of the fuse base, and the outgoing line mounting bracket is arranged on the side of the insulating support close to the moving contact of the fuse base, the incoming line mounting bracket is embedded in the top of the insulating support, and the outgoing line mounting bracket is embedded in the bottom of the insulating support.
[0013] A further improvement of the technical solution is that it also includes an incoming line conductive terminal and an outgoing line conductive terminal, wherein the incoming line conductive terminal is installed above the incoming line mounting bracket, and the outgoing line conductive terminal is installed below the outgoing line mounting bracket.
[0014] The beneficial effect of the present invention lies in that, by arranging a first guide rod on the static contact of the fuse base and a second guide rod on the mounting bracket, the present invention plays a dual guiding role for the fuse carrier when closing the circuit, so that the fuse carrier contact is not easy to deviate from the direction and can be well engaged with the static contact of the fuse base, and the closing is accurate and effective; in addition, the guide rod in the present invention not only plays a guiding role, but also plays a protective role, which can prevent the meshing part between the static contact of the fuse base and the fuse carrier contact from being accidentally impacted; wherein, the two guide rods of the first guide rod are bent into an arc shape, which is convenient for guiding, and are fixed on the static contact of the fuse base after being connected through a mounting plate.
[0015] In addition, the invention has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 It is a structural schematic diagram of the high-voltage fuse.
[0018] 110 is an insulating support, 120 is a static contact of the fuse base, 130 is a moving contact of the fuse base, 140 is a fuse carrier, 141 is a ceramic protective ring, 142 is a switch opening and closing pull ring, 143 is a compression spring, 144 is an end conductive cap, 151 is a mounting bracket, 152 is a second guide rod, 161 is an incoming line mounting bracket, 162 is an outgoing line mounting bracket, 163 is an incoming line conductive terminal, and 164 is an outgoing line conductive terminal. DETAILED DESCRIPTION
[0019] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0021] like Figure 1 As shown, the present invention provides a high-voltage fuse, including an insulating support and a fuse base static contact and a fuse base moving contact arranged on the insulating support, a fuse carrier is engaged on the fuse base moving contact, and the other end of the fuse carrier can be engaged on the fuse base static contact to form a closing switch; first guide rods are arranged on both sides of the engagement portion between the fuse base static contact and the fuse carrier, and the first guide rods are two parallel guide rods bent into an arc shape; a mounting bracket is arranged on the insulating support, and two second guide rods are arranged on one side of the mounting bracket close to the fuse carrier, and the two second guide rods are fixed on the mounting bracket in a V shape. Among them, the insulating support adopts a ceramic insulating support.
[0022] In addition, an insulating protection structure and an end conductive cap are provided at one end of the fuse carrier close to the static contact of the fuse base. The end conductive cap engages with the static contact of the fuse base to form a closed switch. The insulating protection structure is provided at the lower part of the end conductive cap.
[0023] Specifically, the insulating protection structure includes a ceramic protection ring which is sleeved on the periphery of the fuse carrier, a switch opening and closing pull ring is provided on one side of the ceramic protection ring, the insulating protection structure also includes a compression spring arranged between the end conductive cap and the ceramic protection ring, and the insulating protection structure also includes an insulating sleeve arranged between the compression spring and the internal fuse carrier.
[0024] In order to prevent the guide rod from damaging the fuse carrier, the present invention further provides an insulating protective coating on one side of the first guide rod and the second guide rod close to the fuse carrier.
[0025] In addition, the high-voltage fuse also includes an incoming line mounting bracket, an outgoing line mounting bracket, an incoming line conductive terminal and an outgoing line conductive terminal. The incoming line mounting bracket is arranged on the side of the insulating support close to the static contact of the fuse base, and the outgoing line mounting bracket is arranged on the side of the insulating support close to the moving contact of the fuse base. The incoming line mounting bracket is embedded in the top of the insulating support, and the outgoing line mounting bracket is embedded in the bottom of the insulating support; the incoming line conductive terminal is installed above the incoming line mounting bracket, and the outgoing line conductive terminal is installed below the outgoing line mounting bracket.
[0026] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, and they shall be within the scope of protection of the present invention.
Claims
1. A high voltage fuse, characterized in that: It includes an insulating support, a fixed contact of a fuse base arranged on the insulating support, and a moving contact of the fuse base. A fuse carrier is meshed on the moving contact of the fuse base, and the other end of the fuse carrier can be meshed on the fixed contact of the fuse base to form a closing circuit. First guide rods are provided on both sides of the meshing position between the fixed contact of the fuse base and the fuse carrier, and the first guide rods are two parallel guide rods bent into an arc shape. A mounting bracket is provided on the insulating support, and two second guide rods are provided on the side of the mounting bracket close to the fuse carrier, and the two second guide rods are fixed on the mounting bracket in a V shape.
2. The high voltage fuse according to claim 1, characterized in that: The insulating pillars are made of ceramic insulating pillars.
3. The high voltage fuse according to claim 1, characterized in that: An end of the fuse carrier close to the static contact of the fuse base is provided with an insulating protection structure and an end conductive cap, the end conductive cap is engaged with the static contact of the fuse base to form a closed switch, and the insulating protection structure is arranged at the lower part of the end conductive cap.
4. The high voltage fuse according to claim 3, characterized in that: The insulating protection structure comprises a ceramic protection ring sleeved on the periphery of the fuse carrier, and a switch opening and closing pull ring is arranged on one side of the ceramic protection ring.
5. The high voltage fuse according to claim 4, characterized in that: The insulating protection structure also includes a compression spring arranged between the end conductive cap and the ceramic protection ring.
6. The high voltage fuse according to claim 5, characterized in that: The insulating protection structure also includes an insulating sleeve arranged between the compression spring and the internal fuse carrier.
7. The high voltage fuse according to claim 1, characterized in that: An insulating protective coating is provided on one side of the first guide rod and the second guide rod close to the fuse carrier.
8. The high voltage fuse according to claim 1, characterized in that: It also includes an incoming line mounting bracket and an outgoing line mounting bracket. The incoming line mounting bracket is arranged on the side of the insulating support close to the static contact of the fuse base, and the outgoing line mounting bracket is arranged on the side of the insulating support close to the moving contact of the fuse base. The incoming line mounting bracket is embedded in the top of the insulating support, and the outgoing line mounting bracket is embedded in the bottom of the insulating support.
9. The high voltage fuse according to claim 8, characterized in that: It also includes an incoming line conductive terminal and an outgoing line conductive terminal. The incoming line conductive terminal is installed above the incoming line mounting bracket, and the outgoing line conductive terminal is installed below the outgoing line mounting bracket.