Multi-angle wiring terminal insulation protection device for pole-mounted circuit breaker and protection piece thereof

Through the design of the insulation protection device of multi-angle terminals, the problems of poor sealing of silicone rubber sheath, aging and falling off and angle mismatch are solved, and the efficient insulation protection and safety improvement of the circuit breaker on the column is achieved, and it is suitable for a variety of equipment models. and angle wiring requirements reduce maintenance costs.

CN222260820UActive Publication Date: 2024-12-27SHANDONG YUNHAO INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202420888453.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-26
Publication Date
2024-12-27
Estimated Expiration
2034-04-26

AI Technical Summary

Technical Problem

The existing silicone rubber sheath has problems such as poor sealing, aging and falling off, mismatch in the insulation protection of equipment such as column circuit breakers, poor thermal conductivity and high cost, resulting in increased safety hazards in the power grid.

Method used

The insulation protection device of multi-angle terminals is adopted, including the hard seal cover on the left and right sides connected by hinges to form a sealing space, and sealing and reinforcement are achieved through sealing units and clamping units, adapting to various angle wiring forms.

Benefits of technology

It realizes multiple protection of the equipment, improves sealing performance and safety, extends service life, reduces maintenance costs, and adapts to the needs of a variety of equipment models and angle wiring.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222260820U_ABST
Patent Text Reader

Abstract

The utility model relates to a multi-angle wiring terminal insulation protection device for a pole-mounted circuit breaker and a protection member thereof, the multi-angle wiring terminal insulation protection device comprises a left side sealing cover, a right side sealing cover and an articulation member, the left side sealing cover and the right side sealing cover are rotatably connected together through the articulation member, the left side sealing cover and the right side sealing cover are both hard sealing covers, and the left side sealing cover and the right side sealing cover are fixedly connected through the articulation member. The left side sealing cover and the right side sealing cover are butted together to form a sealed space, a base rotating space for accommodating a base is formed at the rear part of the sealed space, a copper nose mounting space is formed at the front part of the sealed space, and the copper nose mounting space is communicated with the base rotating space; a necking section is formed at the communication part of the copper nose mounting space and the base rotating space; a sealing unit and a clamping unit are further arranged between the left side sealing cover and the right side sealing cover. The utility model has the advantages that the wiring device can adapt to various angle wiring forms, and provides a protection function for equipment wiring positions under various conditions. And meanwhile, the clamping function is achieved, and the multiple effects of sealing and reinforcing are achieved.
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Description

Technical Field

[0001] The utility model relates to an insulation protection device for a multi-angle wiring terminal for a pole-mounted circuit breaker and a protection piece thereof, belonging to the field of electric power. Background Art

[0002] In the power industry, the construction of distribution networks has always been a key link. It connects power generation, transmission and end users, and is an important link in achieving efficient operation of the power system. With the acceleration of global energy transformation, especially the rapid development of renewable energy and energy storage, the construction of distribution networks has become the focus of the power grid.

[0003] The investment in distribution network is mainly concentrated on the insulation transformation of lines and the upgrading of distribution equipment. In order to ensure the actual effect of distribution network construction, the state and the industry have relevant clear standards for the insulation of important hidden dangers such as equipment connections. Among them, Article 11.2.1 of GB 51302-2018 "Design Standard for Overhead Insulated Distribution Lines" stipulates that "the connection between equipment, hardware and insulated wires should be insulated, and measures such as insulation shields or insulation wrapping can be adopted. The insulation shield should be made of heat shrinkable or prefabricated insulation materials, and the wrapping material should be self-adhesive"; Article 11.2.2 stipulates that "the insulation shield and wrapping materials should prevent dirt accumulation and water ingress, and should meet flame retardant requirements." "DL / T602-1996 Overhead Insulated Distribution Line Construction and Acceptance Procedures" clearly requires that "the exposed part of the joint must be insulated and a special insulation shield must be installed."

[0004] The connectors of outdoor equipment such as pole-mounted circuit breakers and pole-mounted transformers in the distribution network are exposed and need to be protected. Currently, they are wrapped with silicone rubber sheaths or insulating coating materials.

[0005] However, the current approach has many shortcomings:

[0006] 1. The silicone rubber sheath currently used cannot be completely sealed. Not only is it not waterproof, but water may even accumulate inside the sheath, causing metal corrosion and loose fasteners, which directly leads to poor contact and secondary failures.

[0007] 2. The silicone rubber sheath is made of soft material and is fastened by buckles. Due to aging, wind and sun, the buckles are easy to loosen and even fall off completely under external forces, losing their protective function. Problems are not easy to be discovered, which seriously affects the safe and stable operation of the power grid. To ensure safe operation, it needs to be replaced every three years on average, which brings a lot of work and high maintenance costs.

[0008] 3. With the upgrading of equipment and new requirements for construction technology, there are many types of hardware and equipment terminals. The silicone rubber sheaths currently used often do not match the equipment model, hardware and equipment terminal angles, resulting in partial metal exposure, which does not play an insulating protection role and is easily corroded by wet flashover, dirty flashover, salt spray and chemical gas. Outdoor power distribution equipment is affected by its structure and environment, and birds are prone to nesting on it. Especially in rainy and snowy weather, it is easy to cause equipment discharge and phase short circuit, which may cause personal electric shock risks and grid tripping;

[0009] 4. The silicone rubber sheath and the metal cannot fit tightly together to form an air insulation layer. The thermal conductivity of air is about 0.0244W / m·K, and the thermal conductivity is poor. The temperature of the metal connection cannot be measured well on the outside.

[0010] 5. When using insulating coating materials for insulation, the quality of the coating is completely dependent on the construction personnel, the coating thickness cannot be determined and measured, and the coating material cannot be tightly bonded to the metal to prevent rainwater from entering. At the same time, the price of the coating material is high, which increases the cost without achieving a good effect.

[0011] Distribution network equipment is the focus of power grid investment. The large amount of investment and the large number of equipment make the corresponding safety hazards more prominent. Power accidents caused by weather conditions, small animals, bird nesting, external force damage and other reasons often occur at the connection between pole-mounted circuit breakers, link switches, transformers and wires. The insulation problem of the last 10cm is also becoming increasingly prominent. With the advancement of primary and secondary integration, one terminal needs to connect multiple wires such as PT, and the problem is more prominent. The insulation of outdoor distribution network equipment urgently needs innovation. Utility Model Content

[0012] In order to overcome the defects of the prior art, the utility model provides a multi-angle terminal insulation protection device for a pole-mounted circuit breaker. The technical solution of the utility model is:

[0013] A multi-angle terminal insulation protection device for a pole-mounted circuit breaker comprises a left sealing cover, a right sealing cover and a hinge, wherein the left sealing cover and the right sealing cover are rotatably connected together by the hinge, the left sealing cover and the right sealing cover are both hard sealing covers, and a sealed space is formed after the left sealing cover and the right sealing cover are butt-jointed together, the rear of the sealed space forms a base rotation space for accommodating a base, and the front forms a copper nose installation space, the copper nose installation space is interconnected with the base rotation space, and a constriction section is formed at the connection between the copper nose installation space and the base rotation space; a sealing unit and a clamping unit are also arranged between the left sealing cover and the right sealing cover.

[0014] The left side sealing cover comprises a left side front sealing cover plate and a left side rear sealing cover plate integrally formed with the left side front sealing cover plate, and the sealing unit is arranged on the left side front sealing cover plate and the left side rear sealing cover plate; a left side front arc-shaped notch is arranged on the left side front sealing cover plate, and a left side rear arc-shaped notch is arranged on the left side rear sealing cover plate.

[0015] The right side sealing cover comprises a right side front sealing cover plate and a right side rear sealing cover plate integrally formed with the right side front sealing cover plate, and the sealing unit is arranged at the mating surface of the right side front sealing cover plate and the right side rear sealing cover plate; a right side front arc-shaped notch is arranged on the right side front sealing cover plate, and a front glue injection hole is formed after the right side front arc-shaped notch is mated with the left side front arc-shaped notch; a right side rear arc-shaped notch is arranged on the right side rear sealing cover plate, and a rear glue injection hole is formed after the right side rear arc-shaped notch is mated with the left side rear arc-shaped notch.

[0016] The sealing unit includes a sealing ridge and a sealing groove. The sealing ridge is arranged on the right front sealing cover plate and the right rear sealing cover plate, and the sealing groove is arranged on the left front sealing cover plate and the left rear sealing cover plate. When the left sealing cover and the right sealing cover are butt-jointed together, the sealing ridge is placed in the sealing groove.

[0017] A left rear connecting rotating plate is arranged at the rear of the left rear sealing cover plate, and a right rear connecting rotating plate is arranged at the rear of the right rear sealing cover plate. The right rear connecting rotating plate is symmetrically arranged with the left rear connecting rotating plate. After the left rear connecting rotating plate and the right rear connecting rotating plate are installed on the base, they rotate with the base.

[0018] The inner walls of the left rear sealing cover plate and the right rear sealing cover plate are filled with sealing sponge pads.

[0019] The inner walls of the left front sealing cover plate and the right front sealing cover plate are filled with sealing sponge pads.

[0020] The clamping unit comprises an elastic buckle and a buckle fixing seat. The left front sealing cover plate is provided with an elastic buckle, and the right front sealing cover plate is provided with a buckle fixing seat which movably cooperates with the elastic buckle.

[0021] A protective member comprises the multi-angle terminal insulation protective device for a pole-mounted circuit breaker, and the multi-angle terminal insulation protective device for a pole-mounted circuit breaker is rotatably matched with a base installed on a pole circuit breaker.

[0022] The utility model has the advantages of being adaptable to various angle wiring forms, providing protection functions for equipment wiring locations in various situations, and having a self-contained clamping function, thus achieving multiple functions of sealing and reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the utility model when in use. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements fall within the scope of protection of the present invention.

[0026] See also Figure 1 and Figure 2 The utility model relates to an insulation protection device for a multi-angle terminal block for a pole-mounted circuit breaker, comprising a left sealing cover, a right sealing cover and a hinge 7, wherein the left sealing cover and the right sealing cover are rotatably connected together by the hinge 7, wherein the left sealing cover and the right sealing cover are both hard sealing covers, wherein the left sealing cover and the right sealing cover are butt-jointed together to form a sealed space, wherein the rear portion of the sealed space forms a base rotation space 17 for accommodating a base, and the front portion forms a copper nose installation space 18, wherein the copper nose installation space is communicated with the base rotation space, and a constriction section is formed at the connection portion between the copper nose installation space 18 and the base rotation space 17; a sealing unit and a clamping unit are further provided between the left sealing cover and the right sealing cover.

[0027] The utility model forms a sealed space by connecting the left sealing cover and the right sealing cover, which can effectively isolate external dust, debris and moisture, etc., and improve the sealing performance of the device.

[0028] The copper nose installation space and the base rotation space are all in a sealed space, ensuring the safety and reliability of electrical components.

[0029] By providing the sealing unit and the clamping unit, the electrical components can be more firmly fixed and protected.

[0030] The left side sealing cover comprises a left side front sealing cover plate 1 and a left side rear sealing cover plate 2 integrally formed with the left side front sealing cover plate 1, and the sealing unit is arranged at the joint surface of the left side front sealing cover plate 1 and the left side rear sealing cover plate 2; a left side front arc-shaped notch is arranged on the left side front sealing cover plate 1, and a left side rear arc-shaped notch 3 is arranged on the left side rear sealing cover plate.

[0031] The right side sealing cover comprises a right side front sealing cover plate 8 and a right side rear sealing cover plate 9 integrally formed with the right side front sealing cover plate 8, and the sealing unit is arranged at the mating surface of the right side front sealing cover plate 8 and the right side rear sealing cover plate 9; a right side front arc-shaped notch is arranged on the right side front sealing cover plate 8, and a front glue injection hole 16 is formed after the right side front arc-shaped notch is mated with the left side front arc-shaped notch; a right side rear arc-shaped notch 12 is arranged on the right side rear sealing cover plate, and a rear glue injection hole 15 is formed after the right side rear arc-shaped notch 12 is mated with the left side rear arc-shaped notch.

[0032] The utility model is provided with a sealing unit at the butt joint surface, thereby achieving efficient sealing. At the same time, arc-shaped notches are respectively provided at the front and rear of the left sealing cover, and arc-shaped notches are also respectively provided at the front and rear of the right sealing cover. The two arc-shaped notches can form a front injection hole and a rear injection hole after butt joint. This design can facilitate the injection and filling of sealant, and can also increase the reliability and durability of the seal.

[0033] The front and rear sealing cover plates of the left sealing cover are integrally formed, and the front and rear sealing cover plates of the right sealing cover are also integrally formed. This design can ensure the strength and reliability of the sealing cover during manufacturing and use.

[0034] The sealing unit includes a sealing ridge and a sealing groove. The sealing ridge 11 is arranged on the right front sealing cover plate 8 and the right rear sealing cover plate, and the sealing groove 6 is arranged on the left front sealing cover plate 1 and the left rear sealing cover plate 2. When the left sealing cover and the right sealing cover are butt-jointed together, the sealing ridge 11 is placed in the sealing groove 6 to achieve efficient sealing, thereby ensuring its safety and reliability.

[0035] A left rear connection rotating plate 4 is arranged at the rear of the left rear sealing cover plate 2, and a right rear connection rotating plate 10 is arranged at the rear of the right rear sealing cover plate 9, and the right rear connection rotating plate 10 is symmetrically arranged with the left rear connection rotating plate 4; after the left rear connection rotating plate 4 and the right rear connection rotating plate 10 are installed on the base 14, they are rotated with the base 14. The left rear connection rotating plate 4 and the right rear connection rotating plate 10 are rotated with the base, which facilitates the adjustment of the installation angle, increases the applicability and reliability, and improves the service life.

[0036] The inner walls of the left rear sealing cover plate 2 and the right rear sealing cover plate 9 are filled with sealing sponge pads 5 .

[0037] The inner walls of the left front sealing cover plate 1 and the right front sealing cover plate 8 are filled with sealing sponge pads 5 .

[0038] The clamping unit comprises an elastic buckle and a buckle fixing seat. The left front sealing cover plate is provided with an elastic buckle, and the right front sealing cover plate is provided with a buckle fixing seat which movably cooperates with the elastic buckle.

[0039] like Figure 2 As shown, the utility model also relates to a protective member, including the multi-angle terminal insulation protective device for pole-mounted circuit breakers, and the multi-angle terminal insulation protective device for pole-mounted circuit breakers is rotatably matched with a base installed on the pole circuit breaker.

[0040] The working principle of the utility model is:

[0041] The left sealing cover and the right sealing cover are made of insulating flame-retardant material, which can provide a container for injecting insulating material later while ensuring that the shape is fixed after installation.

[0042] The provision of the sealing ridge and the sealing groove enables a sealed space to be formed after installation, and the insulating material will not leak.

[0043] When installing the utility model, the left sealing cover and the right sealing cover are closed, and the left sealing cover and the right sealing cover are compressed and sealed with the equipment through the sealing sponge. The left sealing cover and the right sealing cover are connected with the base through the left rear connecting rotating plate and the right rear connecting rotating plate, and the internal sponge sealing pad is compressed to prevent leakage of the subsequent injection of insulating material. At the same time, due to the rotation cooperation between the left rear connecting rotating plate and the right rear connecting rotating plate and the base, the utility model can cooperate with the base at multiple angles.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-angle terminal insulation protection device for a pole-mounted circuit breaker, characterized in that: It includes a left sealing cover, a right sealing cover and a hinge, the left sealing cover and the right sealing cover are rotatably connected together by the hinge, the left sealing cover and the right sealing cover are both hard sealing covers, and a sealed space is formed when the left sealing cover and the right sealing cover are butt-jointed together, the rear part of the sealed space forms a base rotation space for accommodating the base, and the front part forms a copper nose installation space, the copper nose installation space is interconnected with the base rotation space, and a necking section is formed at the connection between the copper nose installation space and the base rotation space; a sealing unit and a clamping unit are also arranged between the left sealing cover and the right sealing cover.

2. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 1, characterized in that: The left side sealing cover comprises a left side front sealing cover plate and a left side rear sealing cover plate integrally formed with the left side front sealing cover plate, and the sealing unit is arranged on the left side front sealing cover plate and the left side rear sealing cover plate; a left side front arc-shaped notch is arranged on the left side front sealing cover plate, and a left side rear arc-shaped notch is arranged on the left side rear sealing cover plate.

3. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 2, characterized in that: The right side sealing cover comprises a right side front sealing cover plate and a right side rear sealing cover plate integrally formed with the right side front sealing cover plate, and the sealing unit is arranged at the mating surface of the right side front sealing cover plate and the right side rear sealing cover plate; a right side front arc-shaped notch is arranged on the right side front sealing cover plate, and a front glue injection hole is formed after the right side front arc-shaped notch is mated with the left side front arc-shaped notch; a right side rear arc-shaped notch is arranged on the right side rear sealing cover plate, and a rear glue injection hole is formed after the right side rear arc-shaped notch is mated with the left side rear arc-shaped notch.

4. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 3, characterized in that: The sealing unit includes a sealing ridge and a sealing groove. The sealing ridge is arranged on the right front sealing cover plate and the right rear sealing cover plate, and the sealing groove is arranged on the left front sealing cover plate and the left rear sealing cover plate. When the left sealing cover and the right sealing cover are butt-jointed together, the sealing ridge is placed in the sealing groove.

5. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 4, characterized in that: A left rear connecting rotating plate is arranged at the rear of the left rear sealing cover plate, and a right rear connecting rotating plate is arranged at the rear of the right rear sealing cover plate. The right rear connecting rotating plate is symmetrically arranged with the left rear connecting rotating plate. After the left rear connecting rotating plate and the right rear connecting rotating plate are installed on the base, they rotate with the base.

6. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 5, characterized in that: The inner walls of the left rear sealing cover plate and the right rear sealing cover plate are filled with sealing sponge pads.

7. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 5, characterized in that: The inner walls of the left front sealing cover plate and the right front sealing cover plate are filled with sealing sponge pads.

8. The multi-angle terminal insulation protection device for a pole-mounted circuit breaker according to claim 5, characterized in that: The clamping unit comprises an elastic buckle and a buckle fixing seat. The left front sealing cover plate is provided with an elastic buckle, and the right front sealing cover plate is provided with a buckle fixing seat which movably cooperates with the elastic buckle.

9. A protective member, characterized in that: It comprises the multi-angle terminal insulation protection device for pole-mounted circuit breakers as claimed in any one of claims 1 to 8, and the multi-angle terminal insulation protection device for pole-mounted circuit breakers is rotatably matched with a base installed on the pole circuit breaker.