A non-destructive monitoring system for horizontal joints in a tower

Abstract

The utility model relates to the technical field of mixed tower, disclose a kind of mixed tower horizontal joint nondestructive testing system, comprising: tower drum foundation, the multiple tower drums of being set to the top of tower drum foundation and the booster station monitoring workstation being set to ground;Horizontal joint is arranged between adjacent tower drums, and piezoelectric magnetic mechanism is arranged in horizontal joint, and the top of piezoelectric magnetic mechanism is provided with electric quantity detection mechanism, the outside of piezoelectric magnetic mechanism is provided with waterproof layer, the outside of waterproof layer is provided with flexible protective layer, piezoelectric magnetic mechanism includes piezoelectric material being set to the inside of horizontal joint, wire being connected to piezoelectric material, and ceramic rod being set to the outside of horizontal joint, the outer surface of ceramic rod is around with conducting coil, and conducting coil is connected to wire, and the system is for the fan mixed tower horizontal joint in operation, using built-in piezoelectric material of big strength, the current of piezoelectric material is converted into vertical magnetic quantity, in outer arrangement annular coil, with the current detection of magnetic flux variation conversion to calculate piezoelectric material stress condition.

Description

Technical Field

[0001] This utility model relates to the field of mixed tower technology, and in particular to a non-destructive monitoring system for horizontal joints in mixed towers. Background Technology

[0002] Currently, with the continuous advancement of the clean and low-carbon energy transition, renewable energy has experienced rapid development due to its characteristics of cleanliness, safety, and sustainable development. Wind energy, as one of the renewable energy sources, has good economic viability and large-scale development and utilization value. The proportion of hybrid towers in high-tower solutions has increased; however, due to limitations in the manufacturing process and the characteristics of concrete materials themselves, problems such as poor quality stability, long construction periods, and complex installation still exist. Furthermore, it presents many risks and defects different from steel towers, making operation and maintenance more difficult.

[0003] The losses to wind turbine units caused by the overturning of the hybrid tower are high. Therefore, ensuring the integrity of the horizontal grouting joint of the hybrid tower is crucial. Existing technology uses drones for inspection, which cannot monitor in real time. Drones inspect from the surface of the hybrid tower, making it difficult to detect damage inside the tower, and manual operation is required. Utility Model Content

[0004] This application provides a non-destructive monitoring system for horizontal joints in mixed towers to solve the problems in the background art.

[0005] To address the aforementioned technical problems, this application provides a non-destructive monitoring system for horizontal joints in mixed-tower structures, comprising: a tower foundation, multiple towers disposed on top of the tower foundation, and a monitoring workstation for a booster station disposed on the ground; a horizontal joint is provided between adjacent towers, a piezoelectric mechanism is disposed within the horizontal joint, an electrical detection mechanism is disposed on top of the piezoelectric mechanism, a waterproof layer is disposed on the outside of the piezoelectric mechanism, and a flexible protective layer is disposed on the outside of the waterproof layer; the piezoelectric mechanism includes a piezoelectric material disposed within the horizontal joint, a wire connected to the piezoelectric material, and a ceramic rod disposed on the outside of the horizontal joint, a conductive coil is wound around the outer surface of the ceramic rod, and the conductive coil is connected to the wire.

[0006] In some embodiments of this application, the power detection mechanism includes a coil wound on the outer wall of the tower, a ZIGBEE wireless transmission device disposed outside the tower wall, a photovoltaic panel disposed on the outer wall of the tower, and an ammeter connected to the coil wound. The photovoltaic panel is used to supply the power required by the ZIGBEE wireless transmission device.

[0007] In some embodiments of this application, the photovoltaic panel is equipped with a battery to power the ZIGBEE wireless transmission device.

[0008] In some embodiments of this application, a data acquisition device is installed on the ground, and the data acquisition device is wirelessly connected to the ZIGBEE wireless transmission device for transmitting current data.

[0009] In some embodiments of this application, the booster station monitoring workstation is a 64-bit server.

[0010] In some embodiments of this application, the piezoelectric mechanism is configured as a plurality of piezoelectric mechanisms, which are evenly arranged on the outside of the tower reinforcement cage.

[0011] In some embodiments of this application, the size of the piezoelectric mechanism is the same as that of the coarse aggregate in the concrete.

[0012] In some embodiments of this application, the conductive coil is vertically spirally wound.

[0013] Compared with the prior art, this utility model has the following features and beneficial effects:

[0014] This invention can monitor the average stress on the tower body of the hybrid tower in real time and monitor the integrity of the grout joint of the hybrid tower throughout its entire life cycle. The stress change is provided by the measuring object, which is a non-destructive test and has almost no impact on the main structure of the hybrid tower. The workstation provides real-time simulation analysis, combined with the annular average strain data of the measurement location and its change over time, which is reliable. It can prevent damage to the horizontal joint of the hybrid tower before it is damaged, and its widespread use can achieve good results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the arrangement of the power detection mechanism according to an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the arrangement of the piezoelectric mechanism according to an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the winding coil arrangement according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram illustrating the working principle of the piezoelectric mechanism in an embodiment of this utility model.

[0020] In the diagram, 100 is the tower foundation; 200 is the tower; 300 is the substation monitoring workstation; 400 is the horizontal joint; 500 is the piezoelectric mechanism; 510 is the piezoelectric material; 520 is the conductor; 530 is the ceramic rod; 540 is the conductive coil; 600 is the power detection mechanism; 610 is the winding coil; 620 is the ZIGBEE wireless transmission device; and 700 is the data acquisition instrument. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] like Figure 1-5 As shown, according to some embodiments of this application, a non-destructive monitoring system for horizontal seams in mixed towers includes: a tower foundation 100, multiple towers 200 disposed on the top of the tower foundation 100, and a booster station monitoring workstation 300 disposed on the ground; a horizontal seam 400 is disposed between adjacent towers 200, a piezoelectric mechanism 500 is disposed within the horizontal seam 400, an electrical detection mechanism 600 is disposed on the top of the piezoelectric mechanism 500, a waterproof layer is disposed on the outside of the piezoelectric mechanism 500, and a flexible protective layer is disposed on the outside of the waterproof layer; the piezoelectric mechanism 500 includes a piezoelectric material 510 disposed within the horizontal seam 400, a wire 520 connected to the piezoelectric material 510, and a ceramic rod 530 disposed on the outside of the horizontal seam 400, a conductive coil 540 is wound around the outer surface of the ceramic rod 530, and the conductive coil 540 is connected to the wire 520.

[0026] According to some embodiments of this application, the power detection mechanism 600 includes a wound coil 610 disposed on the outer wall of the tower 200, a ZIGBEE wireless transmission device 620 disposed outside the tower wall, a photovoltaic panel disposed on the outer wall of the tower 200, and an ammeter connected to the wound coil 610. The photovoltaic panel is used to supply the ZIGBEE wireless transmission device 620 with the required power.

[0027] According to some embodiments of this application, the photovoltaic panel is equipped with a battery that powers the ZIGBEE wireless transmission device 620.

[0028] According to some embodiments of this application, a data acquisition device 700 is installed on the ground, and the data acquisition device 700 is wirelessly connected to a ZIGBEE wireless transmission device 620 for transmitting current data.

[0029] According to some embodiments of this application, the booster station monitoring workstation 300 is a 64-bit server.

[0030] According to some embodiments of this application, multiple piezoelectric mechanisms 500 are provided, and the multiple piezoelectric mechanisms 500 are evenly arranged on the outside of the steel cage of the tower 200.

[0031] According to some embodiments of this application, the size of the piezoelectric mechanism 500 is the same as that of the coarse aggregate in concrete.

[0032] According to some embodiments of this application, the conductive coil 540 is vertically spirally wound.

[0033] According to some embodiments of this application, a high-strength piezoelectric material 510 is built into the horizontal joint 400 of the wind turbine's hybrid tower during operation. The current in the piezoelectric material 510 is converted into vertical magnetic flux. A loop coil is arranged externally, and the stress on the piezoelectric material 510 is calculated by detecting the current converted from the change in magnetic flux. The hybrid tower is simulated and analyzed at the workstation using real-time wind speed and direction data. The stress on the piezoelectric material 510 at the detected location is then compared to find the abnormal grouting joint. The error is reduced by lateral comparison based on the detected grouting joint data, and finally, the defect location of the hybrid tower's grouting joint is found.

[0034] According to some embodiments of this application, the piezoelectric mechanism 500 operates on the principle that the piezoelectric material 510 generates voltage under pressure, generates current through the wire 520, and generates magnetism through the coil; in the current detection mechanism 600, the wound coil 610 generates a change in magnetism as the pressure changes in the piezoelectric mechanism 500, thereby changing the magnetic flux of the circumferential wound coil 610, and thus generating a change in current. This invention detects and monitors the changing current, transmits it in real time to the data acquisition instrument 700 via a ZIGBEE wireless transmission device, and finally transmits it to the workstation for data processing and analysis. The ZIGBEE wireless transmission device is powered by a small photovoltaic module and a battery.

[0035] According to some embodiments of this application, the operation process is as follows: ① Fabricate the piezoelectric mechanism 500, and encapsulate it with a waterproof layer and a flexible protective layer, and finally put it into the mold using the outer shell of the concrete pouring device for the mixed tower; ② Arrange the piezoelectric mechanism 500 evenly near the grouting joint according to requirements and direction, and fix it to the outside of the reinforcing cage of the mixed tower piece; ③ Pour the mixed tower piece to form the mixed tower piece; ④ The construction unit installs and assembles the mixed tower piece into a mixed tower; ⑤ Arrange a current detection mechanism 600 for converting coil magnetic quantity into electrical quantity on the outside of the mixed tower at the position of the piezoelectric mechanism 500; ⑥ Transmit the detected current data to the data acquisition instrument 700 in real time through the ZIGBEE wireless transmission device 620; ⑦ The workstation compares and analyzes the stress at the detection position based on the theoretical data of real-time simulation and the detected data; ⑧ Finally, the integrity of the grouting joint of the mixed tower is judged based on the stress at the detection position.

[0036] In summary, this utility model relates to the field of mixed tower technology and discloses a non-destructive monitoring system for horizontal joints in mixed towers, including: a tower foundation, multiple towers set on top of the tower foundation, and a monitoring workstation of a booster station set on the ground; a horizontal joint is set between adjacent towers, a piezoelectric mechanism is set in the horizontal joint, an electric current detection mechanism is set on top of the piezoelectric mechanism, a waterproof layer is set on the outside of the piezoelectric mechanism, and a flexible protective layer is set on the outside of the waterproof layer. The piezoelectric mechanism includes a piezoelectric material set in the horizontal joint, a wire connected to the piezoelectric material, and a ceramic rod set on the outside of the horizontal joint. A conductive coil is wound on the outer surface of the ceramic rod, and the conductive coil is connected to the wire. This system uses a built-in high-strength piezoelectric material for the horizontal joints of mixed towers in operating wind turbines. The current of the piezoelectric material is converted into vertical magnetic quantity, and a ring coil is arranged on the outside. The current converted from the change of magnetic flux is used to calculate the stress on the piezoelectric material.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A non-destructive monitoring system for horizontal joints in a mixed-stove tower, comprising: A tower (200) foundation (100), a plurality of towers (200) disposed on the top of the tower (200) foundation (100), and a substation monitoring workstation (300) disposed on the ground; characterized in that a horizontal joint (400) is provided between adjacent towers (200), a piezoelectric mechanism (500) is provided in the horizontal joint (400), and an electric current detection mechanism (600) is provided on the top of the piezoelectric mechanism (500). A waterproof layer is provided on the outside of the 00), and a flexible protective layer is provided on the outside of the waterproof layer. The piezoelectric mechanism (500) includes a piezoelectric material (510) disposed in the horizontal seam (400), a wire (520) connected to the piezoelectric material (510), and a ceramic rod (530) disposed on the outside of the horizontal seam (400). A conductive coil (540) is wound around the outer surface of the ceramic rod (530), and the conductive coil (540) is connected to the wire (520).

2. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The power detection mechanism (600) includes a wound coil (610) disposed on the outer wall of the tower (200), a ZIGBEE wireless transmission device (620) disposed on the outer wall of the tower, a photovoltaic panel disposed on the outer wall of the tower (200), and an ammeter connected to the wound coil (610). The photovoltaic panel is used to supply the ZIGBEE wireless transmission device (620) with the required power.

3. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The photovoltaic panel is equipped with a battery that powers the ZIGBEE wireless transmission device (620).

4. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 2, characterized in that, A data acquisition device (700) is installed on the ground, and the data acquisition device (700) is wirelessly connected to the ZIGBEE wireless transmission device (620) for transmitting current data.

5. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The booster station monitoring workstation (300) is a 64-bit server.

6. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The piezoelectric mechanism (500) is configured as a plurality of such mechanisms, which are evenly arranged on the outside of the steel cage of the tower (200).

7. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The size of the piezoelectric mechanism (500) is the same as that of the coarse aggregate in the concrete.

8. The non-destructive monitoring system for horizontal joints in a mixed tower according to claim 1, characterized in that, The conductive coil (540) is vertically spirally wound.

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