Power grid frame for power distribution network

Abstract

The utility model provides a power grid frame for a power distribution network. The power grid frame comprises a steel frame tower, an insulator system, a wire connecting assembly and a reinforcing and supporting structure. A rod type insulator and a cable connector are arranged at the top of a steel frame pole tower, so that main line access is realized; and the left and right sides are respectively connected with the left and right insulating protective sleeve leads, and form a branch power supply loop with a connecting line through a tapping insulator. And the ceramic insulator is matched with the damper at the right side, so that the insulating property and the wire stability are improved. The structure is high in overall strength, high in wind resistance and shock resistance and reasonable in insulation configuration, and the operation safety and reliability of a power grid are effectively improved. Modularization facilitates installation and maintenance, is suitable for various terrain environments, solves the problems of poor structural stability, insufficient insulation performance and lack of anti-vibration measures in the prior art, and has good application prospects.

Description

Technical Field

[0001] This utility model relates to the field of power grid frames, and more specifically, to a power grid frame for distribution networks. Background Technology

[0002] With the rapid development of society and the economy, the scale of power distribution networks is constantly expanding, placing higher demands on the performance and reliability of power grid structures. Traditional power grid structures used in power distribution networks have shortcomings and defects in practical applications, as detailed below:

[0003] The existing power grid support structure is relatively simple, with a small contact area between the base of the towers and the ground. During long-term use, especially in poor geological conditions or under significant external forces, this makes them prone to subsidence and tilting. This not only affects the normal operation of the power grid but can also damage cable lines and even cause safety accidents. The insulators used in traditional power grids may have unstable insulation performance, making them susceptible to environmental factors. When the insulator surface becomes dirty or damp, its insulation performance deteriorates, potentially leading to leakage and flashover, threatening the safety of personnel and equipment.

[0004] The existing power grid's tapping structure may not be flexible enough to meet diverse electricity demands. Tapping operations are complex, and the accuracy and reliability of the tapping are low, potentially affecting the power quality and efficiency of the distribution network.

[0005] Existing power grid structures lack effective vibration damping measures, making conductors prone to vibration under wind conditions. Prolonged vibration can lead to conductor fatigue damage, shortening conductor lifespan and increasing line maintenance costs. Furthermore, conductor vibration can also trigger phase-to-phase short-circuit faults, affecting the safe operation of the distribution network. Therefore, we propose an improved power grid structure for distribution networks. Utility Model Content

[0006] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned purpose, this utility model provides the following technical solution: a power grid frame for a distribution network, comprising a steel frame tower and tower reinforcement rods installed on the steel frame tower. Support plates are embedded at the four corners of the lower part of the steel frame tower, and a rod-type insulator is installed in the center of the top of the steel frame tower. A cable connector is provided on the middle section of the rod insulator. A left insulating protective sleeve conductor is connected to the left interface of the cable connector, and a right insulating protective sleeve conductor is provided on the right interface of the cable connector.

[0007] As a preferred technical solution of this utility model, a base is provided on the left side of the steel frame tower, a support frame is installed on the center end of the base, and an L-shaped reinforcing plate is welded to the connection end between the base and the support frame.

[0008] As a preferred technical solution of this utility model, a connecting plate is provided at the top of the support frame, and tap insulators are embedded in the grooves on both sides of the connecting plate.

[0009] As a preferred technical solution of this utility model, there are two tap insulators arranged symmetrically, and the two are connected by a connecting line. A wedge-shaped wire clamp is connected above the tap insulator on the left side.

[0010] As a preferred technical solution of this utility model, a cement foundation pier is fixed on the right side of the steel frame tower, a straight tower is installed above the cement foundation pier, and a cross bracket is embedded on the top of the straight tower.

[0011] As a preferred technical solution of this utility model, the cross bracket is provided with a ceramic insulator, and a vibration damper is installed on one side of the ceramic insulator, and a wire connecting tube is connected to the top of the ceramic insulator.

[0012] As a preferred technical solution of this utility model, the first end of the left insulating protective sleeve conductor is connected to the cable connector, while the last end is connected to the connecting wire.

[0013] As a preferred technical solution of this utility model, the rod insulator and the ceramic insulator are connected to each other by inserting the two ends of the right insulating protective sleeve conductor into the cable connector and the conductor connecting tube, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The steel frame tower of this utility model is inlaid with support pads at the four corners below, which increases the contact area with the ground, effectively disperses the pressure, and avoids the tower sinking or tilting due to uneven ground force. It provides a stable support foundation for the entire power grid, ensuring that it remains stable during long-term use and reducing safety hazards caused by unstable foundation.

[0015] The reinforcement rods of this utility model enhance the structural strength of the steel frame tower, enabling it to better withstand the weight of cable equipment and the forces of the external environment, thereby improving the overall disaster resistance and reliability of the power grid and reducing the risk of tower damage caused by natural disasters or external impacts.

[0016] The base and support frame of this utility model are connected by welding an L-shaped reinforcing plate. This connection method increases the connection strength between the two, making the support frame more stable and able to reliably support the tapping structure, ensuring the stable operation of the tapping line.

[0017] The use of rod-type insulators, tap insulators, and ceramic insulators in this invention effectively isolates cables from metal poles and supports, preventing current leakage into the metal structure and ensuring the safety of personnel and equipment. Simultaneously, the application of insulated protective sheath conductors further improves the cable's insulation performance, reduces the risk of leakage and short circuits, and ensures the safety and stability of power transmission.

[0018] Flexible tapping function: The tapping insulators, connecting wires, and wedge clamps in the left-side tapping structure enable flexible current tapping. Current can be easily distributed to different lines according to actual power demand, improving the power supply flexibility and adaptability of the distribution network and meeting diverse power needs.

[0019] This invention involves installing a vibration damper on one side of a ceramic insulator, which reduces the vibration of the conductor under wind conditions. Conductor vibration can lead to fatigue damage and shorten the conductor's service life. The vibration damper, by consuming vibration energy, reduces the amplitude of conductor vibration, extends the conductor's service life, and reduces line maintenance costs. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure provided for this utility model;

[0022] Figure 3 This is a partial structural diagram of the tap insulator provided by this utility model;

[0023] Figure 4 This is a partial structural diagram of the wire connection sleeve provided by this utility model;

[0024] Figure 5 This is a schematic diagram of a partial connection structure provided by this utility model;

[0025] Figure 6 This is a partial structural diagram of the connecting plate provided by this utility model.

[0026] The image shows:

[0027] 1. Steel frame tower; 2. Tower reinforcement rod; 3. Support plate; 4. Rod insulator; 5. Cable connector; 6. Left insulating protective sleeve conductor; 7. Right insulating protective sleeve conductor; 8. Base; 9. Support frame; 10. L-shaped reinforcement plate; 11. Connecting plate; 12. Tap insulator; 13. Wedge clamp; 14. Connecting wire; 15. Cement foundation pier; 16. Straight-line tower; 17. Cross bracket; 18. Ceramic insulator; 19. Vibration damper; 20. Conductor connecting sleeve. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Example 1: A power grid frame for a power distribution network includes a steel frame tower 1 and a tower reinforcement rod 2 installed on the steel frame tower 1. Support pads 3 are embedded at the four corners of the lower part of the steel frame tower 1. A rod insulator 4 is installed in the center of the top of the steel frame tower 1. A cable connector 5 is provided on the middle section of the rod insulator 4. A left insulating protective sleeve conductor 6 is connected to the left interface of the cable connector 5, and a right insulating protective sleeve conductor 7 is provided on the right interface of the cable connector 5.

[0031] A base 8 is provided on the left side of the steel tower 1. A support frame 9 is installed on the center end of the base 8. An L-shaped reinforcing plate 10 is welded to the connection end between the base 8 and the support frame 9. A connecting plate 11 is provided at the top of the support frame 9. Tap-joint insulators 12 are embedded in the grooves on both sides of the connecting plate 11.

[0032] Two tap insulators 12 are provided, symmetrically arranged, connected by a connecting line 14. A wedge-shaped clamp 13 is connected above the left tap insulator 12. A cement foundation pier 15 is fixed to the right side of the steel frame tower 1. A straight tower 16 is installed above the cement foundation pier 15, and a cross bracket 17 is embedded on the top of the straight tower 16. A ceramic insulator 18 is installed on the cross bracket 17, and a vibration damper 19 is installed on one side of the ceramic insulator 18. A conductor connecting sleeve 20 is connected to the top of the ceramic insulator 18. The first end of the left insulating protective sleeve conductor 6 is connected to the cable connector 5, and the second end is connected to the connecting line 14. The rod insulator 4 and the ceramic insulator 18 are connected by inserting the first and second ends of the right insulating protective sleeve conductor 7 into the cable connector 5 and the conductor connecting sleeve 20, respectively.

[0033] Working principle of power grid frame for power distribution network: The steel frame tower 1 serves as the main supporting structure of the power grid frame. The support pads 3 embedded at the four corners below it increase the contact area with the ground, disperse the pressure of the steel frame tower 1 on the ground, improve the overall stability, and prevent the steel frame tower 1 from sinking or tilting.

[0034] The tower reinforcement rod 2 is installed on the steel frame tower 1, further enhancing the structural strength of the steel frame tower 1, enabling it to withstand the weight of the cable equipment and the forces exerted by the external environment. The rod insulator 4 is installed inside the center of the top of the steel frame tower 1. Its function is to electrically isolate the cable from the steel frame tower 1, prevent current from being conducted to the steel frame tower 1, and ensure the safety of personnel and equipment.

[0035] Cable connector 5 is located in the middle section of rod insulator 4 and is used to connect cables. Left insulating sleeve conductor 6 and right insulating sleeve conductor 7 are connected to the left and right interfaces of cable connector 5, respectively. The insulating sleeves can prevent leakage of current and ensure safe transmission of current within the conductors.

[0036] The base 8 is located on the left side of the steel frame tower 1, providing a stable support foundation for the support frame 9. The L-shaped reinforcing plate 10 is welded to the connection end between the base 8 and the support frame 9, enhancing the connection strength between the two and making the support frame 9 more stable.

[0037] The connecting plate 11 at the top of the support frame 9 is used to install the tap insulator 12. There are two symmetrical tap insulators 12, which serve to provide electrical isolation and support the connecting wire 14. The connecting wire 14 is connected between the two tap insulators 12 and is used to transmit current. The wedge clamp 13 is connected above the left tap insulator 12 and can be used to fix and connect other lines to realize the current tapping function.

[0038] The left insulating protective sleeve conductor 6 is connected at its first end to the cable connector 5 and at its last end to the connecting wire 14, guiding the current from the rod insulator 4 to the tap changer. The concrete foundation pier 15 is fixed to the right side of the steel frame tower 1, providing stable support for the straight-line tower 16. The straight-line tower 16 is used to support and fix the cable line.

[0039] The cross bracket 17 is embedded in the top of the straight-line tower 16, providing an installation position for the ceramic insulator 18. The ceramic insulator 18 is installed on the cross bracket 17, providing electrical insulation and preventing current leakage to the straight-line tower 16. The vibration damper 19 is installed on one side of the ceramic insulator 18, and its function is to reduce the vibration of the conductor under wind force and prevent the conductor from being damaged by vibration.

[0040] The conductor connecting sleeve 20 is connected to the top of the ceramic insulator 18 and is used to connect the right insulating protective sleeve conductor 7. The two ends of the right insulating protective sleeve conductor 7 are inserted into the cable connector 5 and the conductor connecting sleeve 20 respectively, transmitting the current from the rod insulator 4 to the line on one side of the straight tower 16.

[0041] Through the coordinated operation of the above components, this power grid frame realizes the functions of cable support, connection, insulation, tapping, and current transmission in the distribution network, ensuring the safe and stable operation of the distribution network. The working process of the power grid frame for the distribution network is as follows: First, at the selected location for the distribution network installation, support plates 3 are respectively embedded at the four corners below the steel frame tower 1. Then, the steel frame tower 1 is installed at the predetermined location, using the support plates 3 to distribute the pressure, ensuring that the steel frame tower 1 is placed stably and preventing it from sinking or tilting.

[0042] Install the tower reinforcement rod 2 onto the steel frame tower 1, and fix the tower reinforcement rod 2 to the steel frame tower 1 by welding or bolting to enhance the overall structural strength of the steel frame tower 1, so that it can withstand the forces of subsequent equipment and the external environment.

[0043] Install a rod-type insulator 4 inside the center of the top of the steel frame tower 1, ensuring a secure installation to achieve electrical isolation between the cable and the steel frame tower 1. Install the cable connector 5 in the middle section of the rod-type insulator 4. Then connect the left insulating protective sleeve conductor 6 to the left interface of the cable connector 5, and the right insulating protective sleeve conductor 7 to the right interface, ensuring a tight connection to prevent leakage.

[0044] Install a base 8 on the left side of the steel tower 1 and fix it to the ground. Install a support frame 9 at the center end of the base 8, and weld an L-shaped reinforcing plate 10 to the connection end of the base 8 and the support frame 9 to enhance the stability of the connection. Install a connecting plate 11 at the top of the support frame 9, and symmetrically embed two tap insulators 12 into the grooves on both sides of the connecting plate 11. Connect the two tap insulators 12 with a connecting wire 14, and then connect a wedge clamp 13 to the top of the left tap insulator 12 for subsequent line tapping. Finally, connect the tail end of the left insulating protective sleeve conductor 6 to the connecting wire 14. Pour a cement foundation pier 15 on the right side of the steel tower 1, and after the cement has solidified, install a straight tower 16 on top of it.

[0045] A cross bracket 17 is installed on the top of the straight-line tower 16, and then the ceramic insulator 18 is installed on the cross bracket 17. A vibration damper 19 is installed on one side of the ceramic insulator 18 to reduce conductor vibration. Finally, the conductor connecting sleeve 20 is installed on the top of the ceramic insulator 18, and the tail end of the right insulating protective sleeve conductor 7 is inserted into the conductor connecting sleeve 20, while the head end is inserted into the cable connector 5, completing the electrical connection.

[0046] When the power distribution network starts operating, current enters from the cable through the cable connector 5 on the rod insulator 4. A portion of the current is transmitted through the left insulated protective sleeve conductor 6 to the connecting line 14 of the left tap structure, and then distributed to other lines requiring power supply through the wedge clamp 13.

[0047] Another portion of the current is transmitted through the right-side insulated conductor 7 to the ceramic insulator 18 on one side of the straight-line tower 16, and then through the conductor connecting sleeve 20 to the subsequent cable line, realizing the distribution and transmission of current in the power distribution network. The rod insulator 4, tap insulator 12, and ceramic insulator 18 provide electrical insulation throughout the entire operation, isolating the cable from the metal structure of the steel tower 1, support frame 9, and straight-line tower 16, preventing current leakage to these structures and ensuring the safety of personnel and equipment.

[0048] During operation, the vibration damper 19 will swing with the vibration of the conductor, consuming the energy of the conductor vibration, reducing the vibration amplitude of the conductor under the action of wind force, avoiding fatigue damage to the conductor due to excessive vibration, and extending the service life of the conductor. The power grid frame should be inspected regularly, including checking whether the support pad 3 is loose or damaged, and whether the connection between the tower reinforcement rod 2 and the L-shaped reinforcement plate 10 is secure.

[0049] Inspect the surfaces of rod insulator 4, tap insulator 12, and ceramic insulator 18 for cracks or dirt. Clean or replace them promptly if necessary. Inspect the cable connector 5, wedge clamp 13, and conductor connecting sleeve 20 for looseness or overheating, ensuring good electrical connections.

[0050] Check the insulation layers of the left insulating protective sleeve conductor 6 and the right insulating protective sleeve conductor 7 for damage. If any damage is found, repair or replace them promptly. Check whether the vibration damper 19 is securely installed and whether it can function properly for vibration damping.

[0051] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A power grid frame for a power distribution network, comprising a steel frame tower (1) and tower reinforcement rods (2) mounted on the steel frame tower (1), characterized in that, Support pads (3) are embedded at the four corners of the steel frame tower (1). A rod insulator (4) is installed in the center of the top of the steel frame tower (1). A cable connector (5) is provided on the middle section of the rod insulator (4). A left insulating protective sleeve conductor (6) is connected to the left interface of the cable connector (5), and a right insulating protective sleeve conductor (7) is provided on the right interface of the cable connector (5).

2. The power grid frame for a power distribution network according to claim 1, characterized in that, The steel frame tower (1) has a base (8) on its left side. A support frame (9) is installed on the center end of the base (8). An L-shaped reinforcing plate (10) is welded to the connection end between the base (8) and the support frame (9).

3. The grid structure for a power distribution network according to claim 2, wherein The support frame (9) is provided with a connecting plate (11) at the top, and tap insulators (12) are embedded in the grooves on both sides of the connecting plate (11).

4. The grid structure for a power distribution network according to claim 3, wherein There are two tap insulators (12) arranged symmetrically, and a connecting line (14) connects the two. A wedge clamp (13) is connected above the tap insulator (12) on the left side.

5. The grid structure for a power distribution network according to claim 4, wherein A cement foundation pier (15) is fixed on the right side of the steel frame tower (1), and a straight tower (16) is installed above the cement foundation pier (15). A cross bracket (17) is embedded on the top of the straight tower (16).

6. The grid structure for a power distribution network according to claim 5, wherein The cross bracket (17) is provided with a ceramic insulator (18), and a vibration damper (19) is installed on one side of the ceramic insulator (18). A wire connecting sleeve (20) is connected to the top of the ceramic insulator (18).

7. The grid structure for a power distribution network according to claim 6, wherein The first end of the left insulating protective sleeve conductor (6) is connected to the cable connector (5), while the last end is connected to the connecting line (14).

8. The grid structure for a power distribution network according to claim 7, wherein The rod insulator (4) and the ceramic insulator (18) are connected to each other by inserting the two ends of the right insulating protective sleeve conductor (7) into the cable connector (5) and the conductor connecting sleeve (20), respectively.

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