Electric power tower and tower state detection method

Abstract

The invention relates to an electric power tower and a tower pole state detection method, the electric power tower comprises a base and a plurality of tower poles, the tower poles are connected with the base through flanges, the tower poles are connected through flanges, and stress eccentricity detection mechanisms are arranged on the flanges; a state detection mechanism is arranged in the tower pole, the state detection mechanism comprises a detection column, a plurality of small balls are arranged between the detection column and the inner wall of the tower pole, and the tower pole state detection method comprises the steps that whether stress eccentricity exists between the base and the tower pole and between the tower poles or not is detected, and when stress eccentricity exists, flange stress eccentricity early warning is output; detecting whether each tower pole has an inclination risk or not, and outputting tower pole inclination early warning when the inclination risk exists; and when flange stress eccentricity early warning and tower pole inclination early warning exist at the same time, tower pole inclination alarm is output. The device has the advantages that the stress eccentricity detection mechanism and the state detection mechanism are used for detecting the stress condition of the flange and the inclination condition of the tower pole, and whether the tower pole is inclined or not can be accurately judged; the overall cost is low and popularization is convenient.

Description

Technical Field

[0001] The present invention relates to the field of power transmission towers, and particularly to a power transmission tower and a method for detecting the state of the tower pole. Background Art

[0002] Electric energy needs to be transmitted over a long distance to reach the user end. Currently, the transmission of electric energy mainly relies on overhead transmission lines. Among them, during the long-term operation of the overhead lines, affected by natural disasters and the environment such as strong winds, heavy snow, and mountain landslides, there is a problem of tilting of power transmission towers. When the tower body tilts, major accidents such as tower collapse and wire breakage are likely to occur under the subsequent influence of gravity, stress, etc.

[0003] The existing detection of the tilt of power transmission towers mainly relies on three-dimensional lidar or the Beidou positioning system, but the above-mentioned solutions have high costs and are not easy to popularize. Summary of the Invention

[0004] The present invention mainly solves the above problems and provides a power transmission tower and a method for detecting the state of the tower pole.

[0005] The technical solution adopted by the present invention to solve its technical problems is a power transmission tower, which is characterized in that: it includes a base and several tower poles. The base is buried in the ground, and the tower poles are connected to the base and to each other through flanges. A force eccentricity detection mechanism is provided on the flange; the inside of the tower pole is hollow, and a state detection mechanism is provided in the hollow. The state detection mechanism includes a detection column located in the hollow and extending along the length direction of the hollow. Several small balls are provided between the detection column and the inner wall of the tower pole, and the detection column presses the small balls against the inner wall of the tower pole.

[0006] As a preferred solution of the above scheme, the force eccentricity detection mechanism includes several pressure sensors evenly distributed in a ring on the flange, and each pressure sensor is electrically connected to a processor.

[0007] As a preferred solution of the above scheme, the processor calculates the force deviation rate P x on the X-axis and the force deviation rate P y of the flange according to the pressure values of each pressure sensor and determines whether there is a force deviation between adjacent flanges. The force deviation rate P x on the X-axis and the force deviation rate P y of the flange are calculated as follows:

[0008]

[0009] where F1, F2, F3, and F4 respectively correspond to the pressure values of the pressure sensors on the upper left, lower left, upper right, and lower right of the flange. When P x is less than the first preset threshold, it indicates that the force on the flange is biased to the left. When P xWhen it is greater than the second preset threshold, it indicates that the flange is stressed to the right. When P x When it is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the X-axis direction. When P y When it is less than the first preset threshold, it indicates that the flange is stressed upward. When P y When it is greater than the second preset threshold, it indicates that the flange is stressed downward. When P y When it is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the Y-axis direction.

[0010] As a preferred embodiment of the above solution, the detection column includes a cylindrical body, a plurality of partition plates and a plurality of air bags. The partition plates are evenly distributed in a ring on the outer wall of the cylindrical body. The cylindrical body is coaxial with the tower pole. The end of the partition plate abuts against the inner wall of the tower pole. The air bags are arranged in the cavity formed by the partition plate and the inner wall of the tower pole. A pressure sensor is arranged in the air bag, and the pressure sensor is electrically connected to the processor.

[0011] As a preferred embodiment of the above solution, a plurality of grooves extending along the length direction of the tower pole are evenly distributed in a ring on the inner wall of the tower pole. The small balls are connected in series and placed in the grooves. The grooves are arranged in a staggered manner with the partition plates. The number of the grooves is equal to that of the air bags and is an even number.

[0012] As a preferred embodiment of the above solution, the processor judges whether the tower pole is tilted according to the air pressure values detected by each pressure sensor. When judging, the air bags are divided into several groups, and each group includes two air bags on the same diameter. Calculate the difference between the air pressure values in each group of air bags. If the absolute value of the difference between the air pressure values of each group of air bags is less than the third preset threshold, it indicates that the tower pole is not tilted. If there is at least one group of air bags with the absolute value of the difference between the air pressure values greater than the third preset threshold, it indicates that the tower pole has a risk of tilting.

[0013] As a preferred embodiment of the above solution, when the state detection mechanism detects that the tower pole has a risk of tilting and the force eccentricity detection mechanism detects that the flange is stressed eccentrically, it indicates that the tower pole is tilted.

[0014] The present invention also provides a method for detecting the state of a tower pole, which is used for the above-mentioned power transmission tower. The force eccentricity detection mechanism detects whether there is force eccentricity between the base and the tower pole and between the tower poles. When there is force eccentricity, it outputs a flange force eccentricity warning. The state detection mechanism detects whether each tower pole has a risk of tilting. When there is a risk of tilting, it outputs a tower pole tilting warning. When there are both a flange force eccentricity warning and a tower pole tilting warning, it outputs a tower pole tilting alarm.

[0015] As a preferred embodiment of the above solution, the force eccentricity detection mechanism for detecting whether there is force eccentricity between the base and the tower pole and between the tower poles includes: obtaining the pressure values of the pressure sensors at the upper left, lower left, upper right, and lower right of the flange, denoted as F1, F2, F3, and F4 respectively, and calculating the force deviation rate P of the flange on the X-axis based on the pressure values. x and the force deviation rate P of the Y-axis y :

[0016]

[0017] When P x is less than the first preset threshold, it indicates that the flange is biased to the left in terms of force. When P x is greater than the second preset threshold, it indicates that the flange is biased to the right in terms of force. When P x is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the X-axis direction. When P y is less than the first preset threshold, it indicates that the flange is biased upwards in terms of force. When P y is greater than the second preset threshold, it indicates that the flange is biased downwards in terms of force. When P y is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the Y-axis direction.

[0018] As a preferred embodiment of the above solution, the state detection mechanism for detecting whether there is a risk of inclination of each tower pole includes: dividing the air bags into several groups, each group including two air bags on the same diameter, calculating the difference in air pressure values in each group of air bags. If the absolute value of the difference in air pressure values of each group of air bags is less than the third preset threshold, it indicates that the tower pole is not inclined. If there is at least one group of air bags with the absolute value of the difference in air pressure values greater than the third preset threshold, it indicates that the tower pole has a risk of inclination.

[0019] The advantages of the present invention are: using the force eccentricity detection mechanism and the state detection mechanism to detect the force condition of the flange and the inclination condition of the tower pole respectively, it can accurately judge whether the tower pole is inclined; the overall cost is low and it is convenient to popularize. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a power transmission tower.

[0021] Figure 2 is a top view structural diagram of the flange.

[0022] Figure 3 is a radial sectional structural diagram of the tower pole.

[0023] Figure 4 is an axial sectional structural diagram of the tower pole.

[0024] 1 - Base 2 - Tower pole 3 - Flange 4 - Detection column 5 - Small ball 21 - Groove 31 - Screw hole 32 - Pressure sensor 41 - Cylindrical body 42 - Partition board 43 - Airbag. Specific implementation mode

[0025] The technical solution of the present invention will be further described below through embodiments in conjunction with the accompanying drawings.

[0026] Embodiment:

[0027] An electric power pole tower in this embodiment, as Figures 1 to 4 shown, includes a base 1 and several tower poles 2. The base 1 is buried in the ground, and the tower poles 2 are connected to the base 1 and between the tower poles 2 through flanges 3. A force - eccentric detection mechanism is provided on the flange 3. The inside of the tower pole 2 is hollow, and a state detection mechanism is provided in the hollow. The state detection mechanism includes a detection column 4 located in the hollow and extending along the length direction of the hollow. A number of small balls 5 are provided between the detection column 4 and the inner wall of the tower pole 2, and the detection column 4 presses the small balls against the inner wall of the tower pole 2.

[0028] Specifically, the force - eccentric detection mechanism includes several pressure sensors 32 evenly distributed in a ring on the flange 3. Each pressure sensor is electrically connected to a processor. In this example, four pressure sensors 32 are provided on the flange. The processor calculates the force deviation rate P of the X - axis x and the force deviation rate P of the Y - axis y of the flange according to the pressure values of each pressure sensor, and determines whether there is a force deviation between adjacent flanges. The calculation formulas for the force deviation rate P of the X - axis x and the force deviation rate P of the Y - axis y are as follows:

[0029]

[0030] F1, F2, F3, and F4 respectively correspond to the pressure values of the pressure sensors at the upper left, lower left, upper right, and lower right of the flange. If a two - dimensional coordinate system is established with the center of the flange as the origin, the coordinates of the pressure sensors corresponding to F1, F2, F3, and F4 are (-x, y), (-x, -y), (x, y), and (x, -y) respectively. When P x is less than the first preset threshold, it indicates that the flange is stressed to the left. When P x is greater than the second preset threshold, it indicates that the flange is stressed to the right. When P x is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the X - axis direction. When P y is less than the first preset threshold, it indicates that the flange is stressed upward. When P y is greater than the second preset threshold, it indicates that the flange is stressed downward. When P yWhen it is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the Y-axis direction. In an ideal situation, both the first preset threshold and the second preset threshold should be 0. However, considering the process error, torque error of the bolts in the screw holes 31 of the flange 3 and the flange process error, the ideal situation cannot be achieved. Therefore, the first preset threshold is a negative number close to 0, and the second preset threshold is a positive number close to 0. The specific values can be adjusted according to the actual situation. In addition, by calculating the force deviation rate P of the X-axis x and the force deviation rate P of the Y-axis y It can also be used as a reference for whether the power transmission towers are on the same vertical line during the installation of power transmission towers.

[0031] Furthermore, the detection column 4 includes a cylindrical body 41, a plurality of partitions 42 and a plurality of air bags 43. The partitions 42 are evenly distributed in a ring on the outer wall of the cylindrical body 41. The cylindrical body 41 is coaxial with the tower pole 2. The ends of the partitions 42 abut against the inner wall of the tower pole 2. The air bags 43 are arranged in the cavities formed by the partitions 42 and the inner wall of the tower pole 2. A pressure sensor is provided in the air bag 43, and the pressure sensor is electrically connected to the processor. A plurality of grooves 21 extending along the length direction of the tower pole are evenly distributed in a ring on the inner wall of the tower pole 2. The small balls 5 are connected in series and placed in the grooves. The grooves 21 are arranged in a staggered manner with the partitions 42. The number of grooves and the number of air bags are equal and are even numbers. The initial air pressure of each air bag is the same and the small balls are initially in a suspended state. When the tower pole is tilted or concave, the small balls will press the air bags, resulting in an increase in the air pressure in the air bags. In this embodiment, the processor determines whether the tower pole is tilted according to the air pressure values detected by each pressure sensor. When judging, the air bags 43 are divided into several groups, and each group includes two air bags on the same diameter. Calculate the difference between the air pressure values in each group of air bags. If the absolute value of the difference between the air pressure values of each group of air bags is less than the third preset threshold, it indicates that the tower pole is not tilted. If there is at least one group of air bags with the absolute value of the difference between the air pressure values greater than the third preset threshold, it indicates that the tower pole has a risk of tilting. When the air pressure values of the air bags in the same group are different, it indicates that one air bag is pressed by the small ball, and it can be determined that the tower pole may be tilted or concave. In order to further determine whether the tower pole is tilted or concave, it can be distinguished by combining the judgment results of the force eccentricity detection mechanism. When the state detection mechanism detects that the tower pole has a risk of tilting and the force eccentricity detection mechanism detects that the flange is stressed eccentrically, it indicates that the tower pole is tilted; if only the state detection mechanism detects that the tower pole has a risk of tilting and the force eccentricity detection mechanism does not detect that the flange is stressed eccentrically, it indicates that the tower pole is concave.

[0032] Correspondingly, this embodiment further provides a method for detecting the state of a tower pole for the above-mentioned power transmission tower, including: the force eccentricity detection mechanism detects whether there is force eccentricity between the base and the tower pole and between the tower poles of the flange. When there is force eccentricity, a flange force eccentricity warning is output; the state detection mechanism detects whether there is a risk of inclination for each tower pole. When there is a risk of inclination, a tower pole inclination warning is output; when both the flange force eccentricity warning and the tower pole inclination warning exist, a tower pole inclination alarm is output.

[0033] The force eccentricity detection mechanism detects whether there is force eccentricity between the base and the tower pole and between the tower poles of the flange, including: obtaining the pressure values of the pressure sensors on the upper left, lower left, upper right, and lower right of the flange, respectively denoted as F1, F2, F3, and F4, and calculating the force deviation rate P of the flange on the X-axis based on the pressure values x and the force deviation rate P of the flange on the Y-axis y :

[0034]

[0035] When P x is less than the first preset threshold, it indicates that the flange is biased to the left in terms of force. When P x is greater than the second preset threshold, it indicates that the flange is biased to the right in terms of force. When P x is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the X-axis direction. When P y is less than the first preset threshold, it indicates that the flange is biased upward in terms of force. When P y is greater than the second preset threshold, it indicates that the flange is biased downward in terms of force. When P y is between the first preset threshold and the second preset threshold, it indicates that the flange is evenly stressed in the Y-axis direction.

[0036] The state detection mechanism detects whether there is a risk of inclination for each tower pole, including: dividing the airbags into several groups, each group including two airbags on the same diameter, calculating the difference in air pressure values in each group of airbags. If the absolute value of the difference in air pressure values of each group of airbags is less than the third preset threshold, it indicates that the tower pole is not inclined. If there is at least one group of airbags with the absolute value of the difference in air pressure values greater than the third preset threshold, it indicates that the tower pole has a risk of inclination.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A power pole tower, characterized by: It includes a base and a plurality of towers, wherein the base is buried underground, the towers are connected to the base and to each other through flanges, and a force eccentricity detection mechanism is provided on the flanges; The interior of the tower is hollow, and a state detection mechanism is arranged in the hollow. The state detection mechanism includes a detection column located in the hollow and extending along the length direction of the hollow. A plurality of small balls are arranged between the detection column and the inner wall of the tower, and the detection column presses the small balls onto the inner wall of the tower.

2. The power tower according to claim 1, characterized in that: The force eccentricity detection mechanism includes a plurality of pressure sensors uniformly distributed on the flange in a ring shape, and each pressure sensor is electrically connected to the processor.

3. The power pole tower according to claim 2, characterized in that: The processor calculates the flange X-axis force deviation rate P according to the pressure values ​​of each pressure sensor x , Y-axis force deviation rate P y And determine whether there is a force deviation between adjacent flanges, the X-axis force deviation rate P x , Y-axis force deviation rate P y The calculation formula is as follows: Among them, F1, F2, F3 and F4 correspond to the pressure values ​​of the pressure sensors on the upper left, lower left, upper right and lower right of the flange respectively. x When P is less than the first preset threshold, it means that the flange is biased to the left. x When it is greater than the second preset threshold, it means that the flange is biased to the right. x When the flange is between the first preset threshold and the second preset threshold, it means that the force on the flange in the X-axis direction is uniform. y When it is less than the first preset threshold, it means that the flange is stressed upward. y When P is greater than the second preset threshold, it means that the flange is under stress. y When it is between the first preset threshold and the second preset threshold, it means that the flange is evenly stressed in the Y-axis direction.

4. The power pole tower according to claim 1, characterized in that: The detection column includes a cylindrical body, a plurality of partitions and a plurality of air bags. The partitions are evenly distributed on the outer wall of the cylindrical body in a ring shape. The cylindrical body is coaxial with the tower pole. The ends of the partitions are against the inner wall of the tower pole. The air bags are arranged in the cavity formed by the partitions and the inner wall of the tower pole. An air pressure sensor is arranged in the air bag, and the air pressure sensor is electrically connected to the processor.

5. The power pole tower according to claim 4, characterized in that: The inner wall of the tower pole is evenly distributed with a plurality of grooves extending along the length direction of the tower pole in an annular shape. The small balls are connected in series and placed in the grooves. The grooves are staggered with the partitions. The number of the grooves is equal to that of the airbags and is an even number.

6. The power pole tower according to claim 5, characterized in that: The processor determines whether the tower is tilted based on the air pressure values ​​detected by each air pressure sensor. When making the judgment, the airbags are divided into several groups, each group includes two airbags on the same diameter, and the difference in air pressure values ​​in each group of airbags is calculated. If the absolute value of the difference in air pressure values ​​of each group of airbags is less than a third preset threshold value, it indicates that the tower is not tilted. If the absolute value of the difference in air pressure values ​​of at least one group of airbags is greater than the third preset threshold value, it indicates that there is a risk of the tower tilting.

7. The power pole tower according to claim 1, characterized in that: When the status detection mechanism detects that the tower is at risk of tilting and the force eccentricity detection mechanism detects that the flange is eccentrically stressed, it means that the tower is tilting.

8. A tower state detection method, used for the power tower according to any one of claims 1 to 7, characterized in that: The force eccentricity detection mechanism detects whether there is force eccentricity between the flanges between the base and the tower and between the towers, and outputs a flange force eccentricity warning when there is force eccentricity; the status detection mechanism detects whether there is a risk of tilting of each tower, and outputs a tower tilt warning when there is a risk of tilting; and outputs a tower tilt alarm when both the flange force eccentricity warning and the tower tilt warning exist.

9. The tower state detection method according to claim 8, characterized in that: The force eccentricity detection mechanism detects whether there is force eccentricity between the base and the tower and between the towers, including: obtaining the pressure values ​​of the upper left, lower left, upper right and lower right pressure sensors on the flange, which are recorded as F1, F2, F3 and F4 respectively, and calculating the flange X-axis force deviation rate P based on the pressure values x , Y-axis force deviation rate P y : When P x When P is less than the first preset threshold, it means that the flange is biased to the left. x When it is greater than the second preset threshold, it means that the flange is biased to the right. x When the flange is between the first preset threshold and the second preset threshold, it means that the force on the flange in the X-axis direction is uniform. y When it is less than the first preset threshold, it means that the flange is stressed upward. y When P is greater than the second preset threshold, it means that the flange is under stress. y When it is between the first preset threshold and the second preset threshold, it means that the flange is evenly stressed in the Y-axis direction.

10. The tower state detection method according to claim 8, characterized in that: The state detection mechanism detects whether each tower pole has a risk of tilting, including: dividing the airbags into several groups, each group including two airbags on the same diameter, calculating the difference in air pressure values ​​in each group of airbags, if the absolute value of the difference in air pressure values ​​of each group of airbags is less than a third preset threshold value, it indicates that the tower pole is not tilted, and if the absolute value of the difference in air pressure values ​​of at least one group of airbags is greater than the third preset threshold value, it indicates that the tower pole is at risk of tilting.

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