Automatic detection device for service state of power transmission tower foundation

Abstract

The utility model provides an automatic detection device for the service state of a power transmission tower foundation, and particularly relates to the field of monitoring of the service state of the power transmission tower foundation. The detection device is used for being arranged on a power transmission tower foundation and comprises a central computer, a plurality of conductor units and a detection mechanism, the plurality of conductor units are stacked in the Y-axis direction and form four groups of conductor splicing pieces with the same thickness as the power transmission tower foundation; the four groups of conductor splicing pieces are respectively arranged at four corners of the power transmission tower foundation; in the using process, the detection mechanism makes contact with the inner side wall of the electric conductor unit through the telescopic probe. The device is simple in structure, convenient to operate and high in mobility. Compared with traditional detection equipment, the device is not limited by the external environment topography and the technology of operators, and the measurement result is more comprehensive and accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of transmission tower foundation service state monitoring, concretely relates to a kind of automatic detection device for transmission tower foundation service state. BACKGROUND

[0002] In the field of construction engineering, the stability and safety of concrete structure are like the root of building, and it is particularly significant for transmission tower foundation. As the key support structure of power transmission, the quality of its foundation is directly related to the safe and stable operation of the entire power transmission system. In the transmission tower foundation, the damage detection of concrete structure is a key link to ensure its quality, which is related to whether potential problems of structure can be found in time and potential safety hazards can be avoided from becoming serious accidents.

[0003] Traditional concrete damage detection methods have exposed many limitations that are difficult to overcome in long-term application in transmission tower foundation detection: from the aspect of timeliness, traditional methods are usually based on periodic manual detection or fixed-period instrument monitoring. This method often has a certain lag, and cannot capture the occurrence of damage in time. Especially some transmission tower foundations located in complex terrain or harsh climate environment, the tiny cracks or early damage in the internal concrete structure may occur between two detection periods. If these subtle damages are not found in time, they will gradually expand without being noticed, and then threaten the integrity of the entire transmission tower foundation. In addition, due to the fact that transmission towers are usually distributed in remote areas, the timeliness of detection is difficult to guarantee. If the foundation is damaged and not found in time, it may cause the transmission tower to tilt or even collapse, affecting the power supply in a large area. In terms of accuracy, these traditional methods also have obvious shortcomings: on the one hand, some detection methods may be affected by environmental factors, which affects the accuracy of detection results. On the other hand, due to the limitation of detection principle, traditional methods cannot accurately locate and evaluate the damage degree.

[0004] From the operation level, some traditional detection methods need to rely on complex equipment. These devices not only have high purchase cost, but also need professional technicians and special resources for maintenance and calibration. For the detection of transmission tower foundation, due to its dispersion, it is a great challenge to transport these complex devices to each detection site. At the same time, the operation of these devices requires high professional skills of operators, and operators need long-term training and practice to master the use of equipment. This limits the wide application of these detection methods in transmission tower foundation detection to some extent, especially in some remote areas with limited resources or lack of professional technicians, which may lead to the failure of effective detection of transmission tower foundation. UTILITY MODEL CONTENT

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides an automatic detection device for the service status of a transmission tower foundation. The specific technical solution is as follows:

[0006] An automated detection device for the service status of a transmission tower foundation, adapted to be installed on the tower foundation, comprises a central computer, a plurality of conductive units, and a detection mechanism. The conductive units are stacked along the Y-axis to form four groups of conductive pieces having the same thickness as the tower foundation. The four groups of conductive pieces are respectively arranged at the four corners of the tower foundation. During use, the detection mechanism contacts the inner sidewalls of the conductive units via a retractable probe.

[0007] Preferably, the conductor unit includes a rubber ring and four conductive petals with a length of 1 / 4 arc; the four conductive petals are spliced ​​together by an insulating isolation layer to form a hollow cylindrical structure with two ends open; the rubber ring is arranged at the bottom of the hollow cylindrical structure.

[0008] Preferably, the sum of the height of the conductive petal and the thickness of the rubber ring is equal to the height of the conductor unit; wherein the height of the conductor unit is 10 cm; the height of the conductive petal is 9.5 cm, and the thickness of the rubber ring is 0.5 cm.

[0009] Preferably, the detection mechanism includes a mechanism body and a retractable probe, and a data processing and analysis module is provided in the mechanism body; the retractable probe is provided at the bottom of the mechanism body; the retractable probe includes probe A, probe B, probe C and probe D.

[0010] Also preferably, the probes A, B, C and D are arranged side by side at the bottom of the mechanism body; the probes A and C are axially symmetrical with the probes B and D; the bottoms of the probes A and B located on the outside are at the same horizontal height, and the bottoms of the probes C and D located on the inside are at the same horizontal height; the vertical height difference between the probes A and C is 10 cm; the vertical height difference between the probes B and D is 10 cm.

[0011] Also preferably, the probe head of the retractable probe is made of elastic material; and the single retractable length of the retractable probe is 10 cm.

[0012] Further preferably, the bottom opening of the conductor unit located at the lowermost end of the conductor splicing piece is sealed; and the top opening of the conductor unit located at the uppermost end of the conductor splicing piece is sealed by a detachable cover.

[0013] Still further preferably, the inner side walls of several of the conductor units are coated with a waterproof coating.

[0014] More preferably, the retractable probe and the data processing and analysis module are both electrically connected to a central computer.

[0015] The beneficial effects of the utility model are:

[0016] The utility model has a simple structure, is lightweight and convenient, easy to operate and highly mobile. Compared with traditional detection equipment, it is not restricted by the external environment and terrain and the operator's technical skills, and the measurement results are more comprehensive and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings that constitute the specification of this application are used to provide further understanding of this application and do not constitute improper limitations on this application.

[0018] Figure 1 This is a top view of the conductor unit structure in the present utility model;

[0019] Figure 2 This is a cross-sectional view of the conductor unit structure in the present utility model;

[0020] Figure 3 This is a front view of the detection mechanism in the utility model;

[0021] In the figure, 1-conductive petal; 2-insulating isolation layer; 3-rubber ring; 4-mechanism body; 5-probe A; 6-probe C; 7-probe B; 8-probe D. DETAILED DESCRIPTION

[0022] The specific implementation of the automatic detection device for the service status of a transmission tower foundation provided by the present invention is further described in conjunction with the accompanying drawings and embodiments.

[0023] An automated device for detecting the service status of a transmission tower foundation, designed to be installed on the tower foundation, comprises a central computer, several conductive units, and a detection mechanism. The conductive units are stacked along the Y-axis to form four sets of conductive components with the same thickness as the tower foundation. These four sets of conductive components are located at the four corners of the tower foundation. During use, the detection mechanism contacts the inner sidewalls of the conductive units via a retractable probe.

[0024] like Figure 1-2 As shown, the conductor unit comprises a rubber ring 3 and four conductive petals 1, each ¼ arc length long. These four conductive petals 1 are joined together by an insulating isolation layer 2 to form a hollow cylindrical structure with open ends. The rubber ring 3 is positioned at the bottom of the hollow cylindrical structure, spliced ​​together with one end facing downward. Preferably, the conductive petals 1 are made of a conductive material with good electrical conductivity, including but not limited to copper and aluminum.

[0025] Preferably, the sum of the height of the conductive flap 1 and the thickness of the rubber ring 3 is equal to the height of the conductive body unit; wherein the height of the conductive body unit is 10cm; the height of the conductive flap 1 is 9.5cm, and the thickness of the rubber ring 3 is 0.5cm.

[0026] As shown in the figure, the detection mechanism comprises a mechanism body 4 and a telescopic probe, and a data processing and analysis module is arranged in the mechanism body 4; the telescopic probe is arranged at the bottom of the mechanism body 4. Figure 3 The telescopic probe comprises a probe A 5, a probe B 7, a probe C 6 and a probe D 8.

[0027] It is worth noting here that the probe A 5, the probe B 7, the probe C 6 and the probe D 8 are arranged side by side at the bottom of the mechanism body 4; and the two groups of probes are distributed in axial symmetry.

[0028] Preferably, the probe head of the telescopic probe is made of elastic material, which can better adapt to the slight unevenness of the inner wall surface of the conductive body unit, ensure the stable transmission of current and voltage, and thus improve the accuracy of measurement; in addition, the single telescopic length of the telescopic probe is 10cm, which is consistent with the height of a single conductive body unit, and it is more convenient to switch the measurement position between adjacent two conductive body units.

[0029] Further preferably, in order to avoid the influence of moisture or dust attached to the inner wall of the conductive body unit on the accuracy of the measurement result, the inner walls of a plurality of conductive body units are coated with a waterproof coating, and the bottom opening of the conductive body unit located at the lowermost end of the conductive body splicing piece (i.e. the opening close to the bottom end of the transmission tower foundation) is sealed; the top opening of the conductive body unit located at the uppermost end of the conductive body splicing piece (i.e. the opening close to the top end of the transmission tower foundation) is sealed by a detachable cover, and the top opening is closed after measurement.

[0030] More preferably, the telescopic probe and the data processing and analysis module are electrically connected to the central computer, thereby realizing the processing and analysis of the probe measurement data.

[0031] The following describes two cases of vertical direction concrete impedance spectrum mapping and horizontal direction concrete impedance spectrum mapping of the transmission tower foundation by using the utility model:

[0032] Case 1: Concrete impedance spectrum mapping in the vertical direction of the transmission tower foundation, including the following steps:

[0033] S1.1 Place probes A and C in contact with the inner wall of the conductive petal on the same side of the first and second conductive units located at the top, respectively. Place probes B and D in contact with the inner wall of the conductive petal on the opposite side to the contact positions of probes A and C, respectively.

[0034] S1.2 linearly changes according to the set frequency range, adjusting probes A and C to output AC voltage signals of different frequencies (the output frequency range is from 1kHz to 100kHz, with a step size of 1kHz). Probes B and D measure the changes in output current in real time. The voltage and current signal values ​​obtained after measurement are analyzed and processed and transmitted to the central computer for Fourier transformation. The impedance spectrum is calculated and plotted using Ohm's law to obtain the impedance spectrum of adjacent segments in the vertical direction;

[0035] S1.3 Extend all probes downward 10 cm according to the established procedure, inserting them into the second and third conductor units. Once in position, repeat S1.1 and S1.2 until all conductor units are measured and the measurement data and related parameters for each conductor unit are recorded.

[0036] S1.4 Compare and analyze the impedance spectra measured for each conductor unit. When the amplitude deviation of a certain impedance exceeds 10% or the phase deviation exceeds 5°, it is considered that the impedance spectrum at that location has a significant deviation, indicating that the conductor unit corresponding to the impedance spectrum has structural damage.

[0037] Case 2: Concrete impedance spectrum mapping in the horizontal direction of the transmission tower foundation, including the following steps:

[0038] S2.1 uses four detection mechanisms working in conjunction, corresponding to the four corners of the transmission tower foundation. Two of the detection mechanisms use voltage output probes (probe A or probe C), and the other two use current output probes (probe B or probe D). All four probes start from the first conductive unit at the top, and the contact height of the four probes with the guide lobe must be consistent (the specific conductive lobe is irrelevant here);

[0039] S2.2 linearly adjusts probes A and C to output AC voltage signals of varying frequencies (the output frequency range is 1 kHz to 100 kHz, with a step size of 1 kHz). Probes B and D measure the output current changes in real time. The resulting voltage and current signals are analyzed and transmitted to a central computer for Fourier transformation. The impedance spectrum is calculated and plotted using Ohm's law to determine the impedance spectrum of the conductor unit in the horizontal direction.

[0040] S2.3 Extend all probes downward 10 cm according to the established procedure to enter the second conductor unit. Once in position, repeat S2.1 and S2.2 until all conductor units are measured and the measurement data and related parameters for each conductor unit are recorded.

[0041] S2.4 Compare and analyze the impedance spectra measured for each conductor unit. When the amplitude deviation of a certain impedance exceeds 10% or the phase deviation exceeds 5°, it is considered that there is a significant deviation in the impedance spectrum at that location, indicating that the conductor unit corresponding to the impedance spectrum has structural damage.

[0042] It is worth noting that conductor splices can also be installed in areas where the transmission tower foundation crosses faults or poor geological conditions. This can provide a more comprehensive understanding of the changes in the service status of key parts of the transmission tower foundation under different geological conditions and provide timely warnings and maintenance measures for structural damage areas.

[0043] The use of the utility model to measure the service status of the transmission tower foundation has the following advantages:

[0044] 1. Continuous monitoring is possible without the need for complex pre-processing or additional testing steps. Whether during construction or while the structure is in use, it can effectively capture potential damage, greatly improving detection efficiency.

[0045] 2. By measuring the impedance spectrum of the transmission tower foundation, not only can the location of damage be indicated, but the extent of damage can also be accurately assessed based on its amplitude, frequency, and other characteristics. Whether it is minor surface cracks or more serious internal damage, it can be quantitatively assessed through in-depth analysis of the impedance spectrum.

[0046] 3. It can accurately detect the internal structural changes and damage of concrete in the vertical and horizontal directions, accurately determine whether there is damage in the segment, and provide reliable protection for the safety of the transmission tower foundation;

[0047] 4. The automated measuring device can automatically complete measurement and data processing, greatly reducing the investment in labor costs, while reducing the impact of human errors on test results and improving the accuracy and reliability of the test;

[0048] 5. It helps to detect potential problems of transmission tower foundations early so that corresponding measures can be taken for repair and maintenance, ensuring safe and stable power transmission and avoiding possible accidents;

[0049] 6. Impedance spectrum measurement of concrete in vertical and horizontal directions comprehensively covers all directions of the transmission tower foundation, achieving more comprehensive and detailed monitoring to ensure that nothing is missed.

[0050] The following aspects should be noted when implementing the detection process using this utility model:

[0051] First, the contact between the retractable probe and the inner wall of the conductive unit must be good and stable;

[0052] Second, when measuring the impedance spectrum of concrete at vertical height, the frequency range of the output variable frequency AC power should be from 1kHz to 100kHz, with a step size of 1kHz. The measurement should be strictly carried out according to this parameter to obtain accurate impedance spectrum data.

[0053] Third, the changes in the measured current are sampled multiple times, one by one, and averaged, and the collected data are filtered to reduce errors and interference and improve data quality;

[0054] Fourth, during the measurement process, the measurement data and related parameters of each segment, such as measurement time, ambient temperature, ambient humidity, etc., must be recorded in detail, which is of great significance to the accuracy of subsequent data analysis and problem troubleshooting.

[0055] The utility model has a simple structure, is lightweight and convenient, easy to operate and highly mobile. Compared with traditional detection equipment, it is not restricted by the external environment and terrain and the operator's technical skills, and the measurement results are more comprehensive and accurate.

[0056] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to the parts or elements of the present invention and cannot be understood as limitations on the present invention. Terms such as "connected" and "connect" should be understood in a broad sense, indicating that they can be fixedly connected, integrally connected, or detachably connected; they can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances, and they cannot be understood as limitations on the present invention.

[0057] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An automatic detection device for the service status of a transmission tower foundation, which is used to be arranged on the transmission tower foundation, characterized in that: It includes a central computer, several conductor units and detection mechanisms; Several of the conductor units are stacked along the Y-axis direction to form four groups of conductor splicing pieces with the same thickness as the transmission tower foundation; the four groups of conductor splicing pieces are respectively arranged at the four corners of the transmission tower foundation; During use, the detection mechanism contacts the inner side wall of the conductor unit through the retractable probe.

2. The automatic detection device for the service status of a transmission tower foundation according to claim 1, characterized in that: The conductor unit includes a rubber ring and four conductive petals with a length of 1 / 4 arc; the four conductive petals are spliced ​​together by an insulating isolation layer to form a hollow cylindrical structure with two ends open; the rubber ring is arranged at the bottom of the hollow cylindrical structure.

3. The automatic detection device for the service status of a transmission tower foundation according to claim 2, characterized in that: The sum of the height of the conductive petal and the thickness of the rubber ring is equal to the height of the conductor unit; The height of the conductor unit is 10 cm; the height of the conductive petal is 9.5 cm; and the thickness of the rubber ring is 0.5 cm.

4. The automatic detection device for the service status of a transmission tower foundation according to claim 2, characterized in that: The detection mechanism includes a mechanism body and a retractable probe, wherein a data processing and analysis module is provided in the mechanism body; the retractable probe is provided at the bottom of the mechanism body; The retractable probe includes probe A, probe B, probe C and probe D.

5. The automatic detection device for the service status of a transmission tower foundation according to claim 4, characterized in that: The probes A, B, C and D are arranged side by side at the bottom of the mechanism body; the probes A and C are axially symmetrical with the probes B and D; The bottoms of the outer probes A and B are at the same level, and the bottoms of the inner probes C and D are at the same level; The vertical height difference between the probe A and the probe C is 10 cm; the vertical height difference between the probe B and the probe D is 10 cm.

6. The automatic detection device for the service status of a transmission tower foundation according to claim 1, characterized in that: The probe head of the retractable probe is made of elastic material; the single retractable length of the retractable probe is 10 cm.

7. The automatic detection device for the service status of a transmission tower foundation according to claim 2, characterized in that: The bottom opening of the conductor unit located at the lowermost end of the conductor splicing piece is sealed; the top opening of the conductor unit located at the uppermost end of the conductor splicing piece is sealed by a detachable cover.

8. The automatic detection device for the service status of a transmission tower foundation according to claim 4, characterized in that: The inner side walls of several of the conductor units are coated with a waterproof coating.

9. The automatic detection device for the service status of a transmission tower foundation according to claim 4, characterized in that: The retractable probe and the data processing and analysis module are both electrically connected to the central computer.

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