CN221226831U - Join in marriage and become rack combination prefab - Google Patents

Description

A combined prefabricated component for a transformer rack

Technical Field

The utility model relates to a line drainage device, in particular to a distribution transformer rack combined prefabricated component.

Background technique

As one of the core components of the distribution network, the standardized construction of distribution transformer racks plays an important role in ensuring the stable operation of the power grid and providing users with high-quality electricity. However, the installation methods, installation processes, and installation component requirements of traditional distribution transformer racks are not uniform, resulting in uneven installation quality of distribution transformer racks, and there are also some problems:

1. The drainage line does not have a pre-installed grounding maintenance device, which means that the line needs to be installed on-site when it needs maintenance, which is difficult to operate and has great safety risks.

2. Abnormal terminal crimping. The terminals are over-crimped during on-site crimping, which causes the overcurrent area to become thinner, resulting in poor overcurrent capacity. During operation, it will cause severe local heating, or even line burnout or open flames.

3. The copper and aluminum contact surfaces are seriously electrochemically corroded. After long-term operation, the contact surface resistance will become larger and larger, the current carrying capacity will become worse and worse, and the heat generation will become more and more serious.

4. Insulation protection is not in place, and small animals can easily climb up, causing phase short circuit and fire, causing line tripping and power outages in the surrounding power supply area.

Therefore, standardized installation of distribution transformer racks will be a trend in power grid construction, and standardization of distribution transformer rack assembly accessories can effectively ensure the safety and quality requirements of power grid construction.

Utility Model Content

In order to solve the above problems, the utility model provides a distribution transformer rack assembly prefabricated component, which can effectively solve the phenomenon of electrochemical corrosion caused by transitional oxidation of copper and aluminum, reduce the time and difficulty of on-site maintenance operations, reduce power outage time, improve the reliability of power supply and power consumption, improve the insulation effect of the line, and prevent the occurrence of short-circuit tripping problems caused by small animals climbing.

The technical solution adopted by the utility model is:

A distribution transformer rack assembly prefabricated component, the distribution transformer rack assembly prefabricated component includes a drainage conductor and a drainage branch conductor; terminals are installed at both ends of the drainage conductor, one side of the drainage conductor is connected to the high-voltage side of the transformer through the terminal, and the other side of the drainage conductor is connected to the low-voltage side of the overhead conductor through the terminal, and a preinstalled grounding component is also installed on any section of the drainage conductor; the drainage branch conductors are divided into two groups, one end of the two groups of drainage branch conductors is connected to the drainage conductors through wire clamps, and the other ends of the two groups of drainage branch conductors are installed with terminals, the other end of one group of drainage branch conductors is connected to the arrester through the terminal, and the other end of the other group of drainage branch conductors is connected to the fuse through the terminal.

Furthermore, the wiring terminal is longitudinally crimped and installed on the ends of the drainage wire and the drainage branch wire through the copper sleeve, and a rubber-encapsulated protective layer is formed on the outside of the connection between the drainage wire and the drainage branch wire and the wiring terminal.

Furthermore, the pre-installed grounding assembly includes a wiring ring and a protective cover; the wiring ring is in the shape of a U-shaped ...

Furthermore, the protective cover can be rotated toward the outside of the wiring ring relative to the wiring ring through the insulating rod bayonet, so that the metal section on one side of the wiring ring that is not covered with the rubber-coated protective layer leaks out.

Furthermore, a protective layer of rubber is formed by external injection molding at the connection between the drainage wire and the wiring ring.

Furthermore, a rubber-encapsulated protective layer is formed by external injection molding on both sides of the wire clamp connecting the drainage branch wire and the drainage wire.

Beneficial effects of the utility model:

The prefabricated substation rack assembly comes with pre-installed grounding components, which can facilitate line maintenance and reduce the number and duration of power outages. The prefabricated substation rack assembly has a protective layer of rubber formed by multiple injection molding, so it has good insulation protection effect, reduces or even avoids the occurrence of electric shock accidents of personnel and small animals, and protects the lives of personnel and small animals.

The combined prefabricated parts of the distribution transformer rack can be prefabricated, which makes it convenient and quick for operators to install, saving time and effort and high efficiency; the overall appearance is beautiful, standardized and unified, which improves environmental harmony, while reducing the failure rate of traditional racks, improving the reliability of power supply and power consumption, reducing the occurrence of equipment and line failures, and reducing the safety risks involved in line maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS

Figures 1, 2 and 3 are schematic diagrams of the overall structure of the combined prefabricated parts of the distribution transformer rack;

FIG4 is a schematic diagram of the structure of a pre-installed grounding assembly;

FIG5 is a schematic diagram of the structure of the wiring terminal;

In Figures 1-5, 1 is drainage wire, 2 is drainage branch wire, 3 is terminal block, 4 is pre-installed grounding assembly, 5 is wire clamp, 6 is copper sleeve, 7 is rubber-coated protective layer, 8 is wiring ring, 9 is protective cover, 10 is pin shaft, and 11 is insulating rod bayonet structure.

Detailed ways

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

In view of the standardization of distribution transformer racks, the safety and quality requirements of power grid construction are ensured by standardizing the combined accessories of distribution transformer racks. This embodiment provides a distribution transformer rack combined prefabricated component. The distribution transformer rack combined prefabricated component is prefabricated and produced by the manufacturer according to the actual on-site required dimensions, and then directly installed after being transported to the construction site. The installation is convenient and fast, saving time and effort, and high efficiency. Specifically, as shown in Figures 1-3, the distribution transformer rack combined prefabricated component includes two parts: a drainage conductor 1 and a drainage branch conductor 2; wherein one side of the drainage conductor 1 is connected to the high-voltage side of the transformer, and the other side of the drainage conductor 1 is connected to the low-voltage side of the overhead conductor; the drainage branch conductor 2 is divided into two groups, one end of the two groups of drainage branch conductors 2 is connected to the drainage conductor 1 through a wire clamp 5, the other end of one group of drainage branch conductors 2 is connected to the arrester, and the other end of the other group of drainage branch conductors 2 is connected to the fuse.

In view of the fact that the existing drainage lines do not have pre-installed grounding maintenance devices, which leads to on-site installation when the lines need to be repaired, the operation is difficult and the safety risks are high; as shown in Figures 1, 3, and 4, in this embodiment, a pre-installed grounding component 4 is also installed on any section of the drainage wire 1, and the pre-installed grounding component 4 includes a wiring ring 8 and a protective cover 9; the wiring ring 8 is in the shape of a U-shaped character, one side of the wiring ring 8 is connected to the drainage wire 1 through a wire clamp 5, one side is rotatably installed with a protective cover 9, and the other side is externally injection-molded to form a rubber-coated protective layer 7; the protective cover 9 is a cover structure with an opening that matches the wiring ring 8 on one side, the protective cover 9 is rotatably installed on the wiring ring 8 through a pin shaft 10, and an insulating rod bayonet structure 11 is installed on the end of the protective cover 9 away from the drainage wire 1.

When the line needs to be repaired, the protective cover 9 can be rotated by the insulating operating rod in cooperation with the insulating rod bayonet structure 11 at one end of the protective cover 9. When the protective cover 9 is rotated toward the outside of the wiring ring 8 relative to the wiring ring 8 through the insulating rod bayonet, the metal section on one side of the wiring ring 8 that is not covered by the rubber-coated protective layer 7 is partially exposed, so that the grounding drainage operation can be performed. After the line maintenance is completed, the protective cover 9 is rotated in the opposite direction to cover the metal section of the wiring ring 8, eliminating safety hazards and preventing operators from operating incorrectly.

In order to solve the problems of over-crimping during on-site crimping of terminals, electrochemical corrosion of copper and aluminum on the contact surface, and inadequate insulation protection, the distribution and transformation stand assembly prefabricated parts in this embodiment are prefabricated and manufactured as a whole at the manufacturer; as shown in Figures 1, 3, and 5, during prefabricated production, both ends of the drainage conductor 1 and the connection ends of the drainage branch conductor 2 with the lightning arrester and the fuse are installed with DT50 type terminal blocks 3, and the terminal blocks 3 are longitudinally crimped and installed on the ends of the drainage conductor 1 and the drainage branch conductor 2 through the copper sleeve 6, ensuring a large crimping surface, firm crimping, not easy to loosen, better current carrying capacity, low wire operating temperature, not easy to age, long safe operation time of the substation, and can withstand short-term overcurrent operation.

In addition, the connection between the drainage wire 1 and the drainage branch wire 2 and the terminal 3 is formed with a rubber-coated protective layer 7 by external injection molding. The rubber-coated protective layer 7 is made of cable sheath raw materials and has the same lifespan as the cable sheath. It can meet the requirements of aging resistance, voltage resistance, sunlight resistance, high and low temperature resistance, and solve the problem of short circuit tripping caused by small animals climbing. At the same time, the rubber-coated protective layer 7 constitutes external injection molding protection, which can isolate the air, effectively solve the problems of copper-aluminum transition oxidation, and improve the operation stability of the substation.

Furthermore, in order to ensure the safety and stability of the connection between the drainage wire 1 and the wiring ring 8 of the pre-installed grounding component 4, as well as the connection with the drainage wire 1; as shown in Figures 1 and 3, in this embodiment, a rubber-coated protective layer 7 is formed by external injection molding at the connection between the drainage wire 1 and the wiring ring 8, and a rubber-coated protective layer 7 is formed by external injection molding on both sides of the wire clamp 5 connecting the drainage branch wire 2 and the drainage wire 1; the rubber-coated protective layer 7 forms a safety protection at the connection point of the drainage wire 1.

In summary, the prefabricated substation assembly with pre-installed grounding assembly 4 can facilitate line maintenance and reduce the number and duration of power outages; due to the multiple injection molding to form a rubber-encapsulated protective layer 7, the insulation protection effect is good, reducing or even avoiding the occurrence of electric shock accidents of personnel and small animals, and protecting the lives of personnel and small animals. The prefabricated substation assembly can be prefabricated, which makes it convenient and quick for operators to install, saving time and effort, and high efficiency; the overall appearance is beautiful, standardized, and unified, which improves environmental harmony, while reducing the failure rate of traditional rigs, improving the reliability of power supply and power consumption, reducing the occurrence of equipment and line failures, and reducing the safety risks involved in line maintenance.

The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims (6)

1. A distribution transformer rack assembly prefabricated component, characterized in that: the distribution transformer rack assembly prefabricated component comprises a drainage conductor and a drainage branch conductor; both ends of the drainage conductor are installed with wiring terminals, one side of the drainage conductor is connected to the high-voltage side of the transformer through the wiring terminal, and the other side of the drainage conductor is connected to the low-voltage side of the overhead conductor through the wiring terminal, and a pre-installed grounding component is also installed on any section of the drainage conductor; the drainage branch conductors are divided into two groups, one end of the two groups of drainage branch conductors is connected to the drainage conductors through wire clamps, and the other ends of the two groups of drainage branch conductors are installed with wiring terminals, the other end of one group of drainage branch conductors is connected to the arrester through the wiring terminal, and the other end of the other group of drainage branch conductors is connected to the fuse through the wiring terminal. 2. The distribution transformer rack assembly prefabricated component according to claim 1 is characterized in that the wiring terminals are installed on the ends of the drainage wires and the drainage branch wires through longitudinal crimping of copper sleeves, and a rubber-encapsulated protective layer is formed on the outside of the connection between the drainage wires and the drainage branch wires and the wiring terminals. 3. The prefabricated component of the distribution transformer stand assembly according to claim 1 is characterized in that: the pre-installed grounding component includes a wiring ring and a protective cover; the wiring ring is in the shape of a U-shaped character, one side of which is connected to the drainage wire through a wire clamp, one side is rotatably installed with a protective cover, and the other side is externally injection molded with a rubber-coated protective layer; the protective cover is a cover structure with an opening for matching the wiring ring on one side, which is rotatably installed on the wiring ring through a pin shaft, and an insulating rod bayonet structure is installed at the end away from the drainage wire. 4. The transformer stand assembly prefabricated component according to claim 3 is characterized in that: the protective cover can be rotated toward the outside of the wiring ring relative to the wiring ring through the insulating rod bayonet, so that the metal section on one side of the wiring ring that is not covered with the rubber-coated protective layer leaks out. 5. The combined prefabricated component of the distribution transformer rack according to claim 3 is characterized in that a protective layer of rubber is formed by external injection molding at the connection between the drainage wire and the wiring ring. 6. The combined prefabricated component of the distribution transformer stand according to claim 1 is characterized in that: a rubber-encapsulated protective layer is formed by external injection molding on both sides of the wire clamp connecting the drainage branch wire and the drainage wire.