Three-way door type steel pipe pole

Abstract

The utility model discloses a three-way door type steel pipe pole, which belongs to the field of high-voltage transmission line pole towers and comprises a first main pole, a diagonal bridging is fixedly sleeved outside the first main pole and is formed by crossing two insulating rods, and cylindrical sleeves are mounted at four end points of the diagonal bridging. Every two sleeves form a group and are arranged outside the first main rod and the second main rod in a sleeving mode. The beneficial effects of the utility model are that a three-loop power supply line is formed by separately erecting the three wire cross rods on the first main rod and the second main rod, and the mode of erecting the three-loop line in a tower shape does not affect the operation of the other two-loop lines under the condition that any one-loop line is subjected to power-off maintenance; the situation that two circuits are closed to ensure the maintenance safety of personnel is avoided, and the problem that only one circuit supplies power in the maintenance process has extremely high potential safety hazards is solved.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage transmission line towers, and more specifically, to a three-turn-gate type steel pipe pole. Background Technology

[0002] The rigid support structure for erecting power transmission lines requires sufficient height for towers used in high-voltage and ultra-high-voltage transmission lines to avoid the dangers of corona discharge and induced electrostatic fields to people. Furthermore, the transmission lines erected on the towers must be spaced considerably apart. Based on structural materials, towers can be categorized into wood, steel, aluminum alloy, and reinforced concrete structures. Wood-structured towers are less robust, have a shorter lifespan, are more difficult to maintain, and are limited by timber resources. Steel-structured towers, particularly those with trusses and steel pipes in a grid pattern, are the most widely used and form the main structure for ultra-high-voltage and above lines.

[0003] In the case of a three-circuit power supply line scheme, when using the traditional tower-type high-voltage transmission line for maintenance, it is impossible to operate one line while the other two lines are in operation to ensure the safety of maintenance personnel. At least two lines need to be shut down to avoid electric shock accidents to maintenance personnel. The operation of the remaining line is extremely unreliable. Therefore, a three-circuit portal steel pipe pole is proposed to solve the above problems. Utility Model Content

[0004] To overcome the problem in the existing technology that two circuits need to be shut down during maintenance of a three-circuit line to ensure safety, which leads to high power supply pressure and safety hazards in a single circuit, this utility model provides a three-circuit gate-type steel pipe pole, including a first main pole, a scissor brace fixedly sleeved on the outside of the first main pole, the scissor brace being composed of two intersecting insulating rods, and cylindrical sleeves installed at all four ends of the scissor brace, with each pair of sleeves forming a group sleeved on the outside of the first main pole and the second main pole;

[0005] The first main rod and the second main rod are each threaded with three brackets, and each pair of brackets forms a group. Each group of brackets is threaded with a conductor crossarm at the top. The two ends of the three conductor crossarms are independently connected to the first main rod and the second main rod through the brackets. Each conductor crossarm has a conductor hanging point for installing an insulator at the bottom of both the left and right ends.

[0006] The outer walls of the first main pole and the second main pole are both fixedly installed with overhead ground wire crossbars on the opposite side. The two overhead ground wire crossbars and the three conductor crossarms are arranged perpendicularly on the same vertical line. The bottom of the first main pole and the second main pole are both fixedly installed with tower bases.

[0007] Preferably, each of the three conductor crossarms has a hollowed-out groove inside.

[0008] Beneficial effects:

[0009] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0010] (1) By using the first main pole and the second main pole to separately erect three conductor crossbars to form a three-circuit power supply line, the tower type can erect three circuits without affecting the operation of the other two circuits when any circuit is shut down for maintenance, thus avoiding the situation of shutting down two circuits to ensure the safety of personnel during maintenance, thereby solving the problem that there is a high safety hazard when only one circuit is powered during maintenance.

[0011] (2) The scissor bracing composed of insulating rods connects the first main rod and the second main rod to improve stability. While reducing weight, it ensures overall stability. It has the characteristics of beautiful appearance, small footprint, simple construction and maintenance and lower cost. It is also faster to replace aging and rusted parts than the existing tower type, and has good economic indicators. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front view of the structure of this utility model.

[0015] In the diagram: 1. First main pole; 2. Scissor brace; 3. Second main pole; 4. Bracket; 5. Conductor crossarm; 6. Overhead ground wire crossarm; 7. Tower base. Detailed Implementation

[0016] 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 a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected 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.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. The specific embodiments are as follows:

[0018] like Figures 1 to 2 As shown, a three-door type steel pipe pole includes a first main pole 1. A scissor brace 2 is fixedly sleeved on the outside of the first main pole 1. A second main pole 3 is sleeved on the end of the scissor brace 2 away from the first main pole 1. A bracket 4 is provided on the outside of both the first main pole 1 and the second main pole 3. A conductor crossarm 5 is fixedly installed on the top of the bracket 4. Three brackets 4 are threaded on the outside of both the first main pole 1 and the second main pole 3, and every two brackets 4 form a group. A conductor crossarm 5 is threaded on the top of each group of brackets 4. The two ends of the three conductor crossarms 5 are respectively connected to the first main pole 1 and the second main pole 3 through the brackets 4. Each conductor crossarm 5 has a conductor hanging point for installing an insulator at the lower left and right ends.

[0019] In addition, overhead ground wire crossbars 6 are fixedly installed on the outer walls of the first main pole 1 and the second main pole 3 on the opposite side. The two overhead ground wire crossbars 6 and the three conductor crossarms 5 are arranged perpendicularly on the same vertical line, and ground wire hanging points for installing ground wires are also provided at the left and right ends of the two overhead wire crossbars 6.

[0020] The interior of each of the three conductor crossarms 5 is provided with a hollowed-out groove. The hollowed-out groove of the conductor crossarm 5 can effectively reduce the weight of the conductor crossarm 5. Combined with the tower body design of the double main pole, it is lighter than the traditional tower frame. The split design can avoid the situation of two lines being out of service at the same time, and can also ensure the safety of maintenance personnel, which greatly improves the reliability of the safe operation of the transmission line.

[0021] It should be noted that the bottom of the first main pole 1 and the second main pole 3 are both fixedly installed with tower base 7. The bottom of the first main pole 1 and the second main pole 3 still adopts the traditional tower frame base mode to ensure stability while reducing the overall weight. The scissor brace 2 is composed of two intersecting insulating rods. Cylindrical sleeves are installed at the four ends of the two insulating rods. Every two sleeves are fitted onto the outside of the first main pole 1 and the second main pole 3, thereby improving the stability of the overall structure while facilitating maintenance and reducing weight.

[0022] Working principle: 110kV high-voltage substations mostly adopt a double busbar single-section connection, with a total of three busbar sections. Therefore, a power supply scheme of three power supply lines is required. However, traditional tower-type high-voltage lines require two lines to be shut down during maintenance to ensure the safety of maintenance personnel and avoid accidents. Leaving only one line running poses a great safety hazard and lacks stability. Therefore, a double main pole design is adopted, so that the safe operation of the other two circuits is not affected when any one line is shut down for maintenance. This not only ensures the safety of maintenance personnel but also ensures the stability of the transmission line.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A three-door type steel pipe pole, characterized in that, Includes a first main rod (1), and a scissor brace (2) is fixedly sleeved on the outside of the first main rod (1). The scissor brace (2) is composed of two intersecting insulating rods, and each of the four ends of the scissor brace (2) is equipped with a cylindrical sleeve. Every two sleeves are sleeved on the outside of the first main rod (1) and the second main rod (3). The first main rod (1) and the second main rod (3) are each threaded with three brackets (4), and each pair of brackets (4) is a group. Each group of brackets (4) is threaded with a conductor crossarm (5) at the top. The two ends of the three conductor crossarms (5) are independently connected to the first main rod (1) and the second main rod (3) through the brackets (4). Each conductor crossarm (5) has a conductor hanging point for installing insulators at the bottom of both the left and right ends. The first main pole (1) and the second main pole (3) are both fixedly installed with overhead ground wire crossbars (6) on the outer wall of the side away from each other. The two overhead ground wire crossbars (6) and the three conductor crossarms (5) are arranged vertically on the same vertical line. The bottom of the first main pole (1) and the second main pole (3) are both fixedly installed with tower bases (7).

2. The three-door type steel pipe pole according to claim 1, characterized in that, The interior of each of the three conductor crossarms (5) is provided with a hollowed-out groove.

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