A positioning device and method for welding nails to reinforce monitoring points in wind power tower

Abstract

The invention discloses a positioning device and method for welding nails to reinforce monitoring points in a wind turbine tower, belonging to the technical field of wind turbine foundation positioning, comprising an oscillator transducer and a heating element fixed to a first shell, and an acoustic wave sensing element and a thermal sensing element fixed to a second shell. The first shell and the second shell are arranged relatively to each other, and the acoustic wave sensing element receives the acoustic wave signal of the oscillator transducer and transmits it to an analysis and processing device, and the thermal sensing element receives the thermal signal of the heating element and transmits it to the analysis and processing device. Preliminary positioning is performed by the thermal signal and then precise positioning is performed according to the acoustic wave signal.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine foundation positioning, and in particular to a positioning device and method for reinforcing monitoring points in a wind power tower with welding nails. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Wind power generation is becoming more and more popular as a new form of energy. Since the relevant specifications for designing wind turbine foundations were not perfect, many wind turbine foundations cannot meet the feasibility requirements of the project. As the use time increases, more cracks appear in the foundation, anchor rods break, and other problems, seriously affecting the normal operation of the wind turbine.

[0004] Replacing the wind turbine foundation will consume a lot of manpower, material and financial resources. In order to reduce losses and maintain the normal operation of the wind turbine, it is necessary to take measures to strengthen the wind turbine foundation. Therefore, wind turbine foundation reinforcement projects are becoming more and more common. In order to verify the effect of wind turbine foundation reinforcement projects, it is necessary to monitor and analyze the reinforcement position. Therefore, wind turbine reinforcement monitoring projects came into being. In the reinforcement monitoring project, it is necessary to install weld nail strain gauges at the welding nail positions on the outside of the tower and post strain gauges on the inside of the tower corresponding to the outer welding nails for monitoring, so as to obtain the strain of the welding nails on the outside of the tower and the inner wall of the tower at the same position. It is particularly important to accurately locate the points inside and outside the tower. If the positioning error of the inner and outer sides is too large, then the gap between the inner and outer points where the monitoring instrument is installed is too large, which will lead to inaccurate analysis of the welding nail strain gauge monitoring position results and the inner wall strain gauge monitoring position results, and the monitoring data will lose its original value.

[0005] The inventors found that due to the lack of equipment that can perform internal and external positioning of the tower, in actual projects, on-site construction workers often use a ruler and naked eye observation to roughly determine the positions of points on both sides. This positioning method has large errors, resulting in the monitoring results not achieving the maximum data value. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a positioning device and method for monitoring points in wind turbine towers reinforced with welding nails, wherein the positioning of the monitoring points is achieved through the cooperation of an oscillator transducer, a heating element, an acoustic wave sensing element and a thermal sensing element, preliminary positioning is achieved using thermal signals, and final positioning is performed using acoustic wave signals. The precise positioning of the monitoring points is achieved through the successive cooperation of the two positioning methods, thereby solving the problem of inaccurate positioning of the monitoring points on the inner wall of the existing tower.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] In the first aspect, the present invention proposes a positioning device for welding nails to reinforce monitoring points in a wind turbine tower, comprising an oscillator transducer and a heating element fixed to a first shell, and an acoustic wave sensing element and a thermal sensing element fixed to a second shell. The first shell and the second shell are arranged opposite to each other, and the acoustic wave sensing element receives the acoustic wave signal of the oscillator transducer and transmits it to an analysis and processing device, and the thermal sensing element receives the thermal signal of the heating element and transmits it to the analysis and processing device. After preliminary positioning by the thermal signal, precise positioning is performed based on the acoustic wave signal.

[0009] As a further technical solution, one end of the first shell is open and the other end is closed, and the opening of the first shell is an arc-shaped opening.

[0010] As a further technical solution, the closed end of the first shell is fixedly connected to the first bracket, and the center position of the closed end of the first shell is connected to the handle screw rod.

[0011] As a further technical solution, the handle screw rod comprises a screw rod body threadedly connected to the first housing, a handle is fixedly arranged at one end of the screw rod body, and the other end of the screw rod body is fixedly connected to the vibrator transducer.

[0012] As a further technical solution, the screw rod body is also fixedly connected to the arc cover, and the heating element is fixed to the arc cover.

[0013] As a further technical solution, the screw rod body is a hollow structure, wherein the hollow structure allows the power wires of the vibrator transducer and the heating element to pass through.

[0014] As a further technical solution, an annular magnet is further provided between the heating element and the first shell opening.

[0015] As a further technical solution, the second shell has an arc-shaped opening, and the size of the second shell is larger than that of the first shell.

[0016] As a further technical solution, the analysis and processing device includes a signal processing module, which receives the signal of the acoustic wave sensing element and converts it into an acoustic wave positioning image signal, and the signal processing module receives the signal of the thermal sensing element and converts it into a thermal imaging image signal; the signal processing module is also connected to the display screen.

[0017] In a second aspect, the present invention provides a positioning method for a positioning device for reinforcing a monitoring point in a wind turbine tower with welding studs as described above, comprising the following steps:

[0018] Mark the position to be measured on the outside of the tower;

[0019] Place the first shell and the heating element close to the position to be tested outside the tower, and heat the tower point;

[0020] The positioning area is initially determined on the inner side of the tower, and the thermal sensing element receives the thermal signal and transmits it to the analysis and processing device, which converts it into a thermal sensing image. The second shell is placed close to the inner wall of the tower, and the position is adjusted. At the same time, according to the thermal sensing image, the deepest color of the imaging area is found, the range is marked, and coupling agent is applied;

[0021] The oscillator transducer generates sound wave vibrations, and the sound wave sensing element receives the sound wave signal and transmits it to the analysis and processing device, which converts it into a sound wave positioning image and finally marks it according to the precise position where the sound wave is received.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) The present invention realizes the positioning of the monitoring point by cooperating with the vibrator transducer, the heating element, the sound wave sensing element and the heat sensing element, realizes the preliminary positioning by using the heat signal, and realizes the final positioning by using the sound wave signal. The precise positioning of the monitoring point is realized by the sequential cooperation of the two positioning methods, thus avoiding the error problem of positioning by naked eye or ruler.

[0024] (2) The present invention configures the openings of the first shell and the second shell to be arc-shaped, so that the signal transmitting device and the signal receiving device can fit perfectly with the tower wall, thereby avoiding signal loss.

[0025] (3) The second shell of the present invention is larger than the first shell, which ensures that the sound wave signal receiving device can completely receive the sound wave signal emitted by the signal transmitting device, avoids the loss of the sound wave signal, and ensures the accuracy of the data.

[0026] (4) The present invention sets an arc cover between the vibrator transducer and the heating element, which not only avoids damage to the vibrator transducer caused by the operation of the heating element, but also further avoids the loss of the sound wave signal during the transmission process, thereby improving the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 It is a schematic diagram of the overall structure of a positioning device for reinforcing a monitoring point in a wind power tower with welding nails according to one or more embodiments of the present invention;

[0029] Figure 2 is a schematic structural diagram of a signal transmitting device according to one or more embodiments of the present invention;

[0030] Figure 3 is a schematic structural diagram of a signal transmitting device from another angle according to one or more embodiments of the present invention;

[0031] Figure 4 is a schematic structural diagram of a signal receiving device according to one or more embodiments of the present invention;

[0032] Figure 5 is a schematic diagram of the structure of an analysis and processing device according to one or more embodiments of the present invention;

[0033] In the figure: the distances or sizes between parts are exaggerated to show the positions of the parts, and the schematic diagram is for illustration only;

[0034] Among them, 1. signal transmitting device; 2. signal receiving device; 3. analysis and processing device;

[0035] 1-1, power supply wire; 1-2, first bracket; 1-3, first housing; 1-4, vibrator transducer; 1-5, arc cover; 1-6, heating ring; 1-7, annular magnet; 1-8, handle screw rod; 1-9, wire jack;

[0036] 2-1, thermal sensing element; 2-2, second housing; 2-3, power signal transmission line; 2-4, second bracket;

[0037] 3-1. Power signal transmission socket of receiving device; 3-2. Power socket of transmitting device; 3-3. Charging socket; 3-4. Third shell; 3-5. Power switch of transmitting device; 3-6. Signal processing switch; 3-7. Display screen. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] As introduced in the background technology, in the existing positioning process, due to the lack of equipment that can perform internal and external positioning of the separated tower, in actual projects, on-site construction personnel often use a ruler and naked eye observation to roughly determine the position of points on both sides. This positioning method has a large error, resulting in the monitoring results not achieving the maximum data value. In order to solve the above technical problems, the present invention proposes a positioning device and method for welding nails to reinforce monitoring points in wind turbine towers.

[0040] Example 1

[0041] In a typical embodiment of the present invention, Figure 1-Figure 5As shown, a positioning device for welding nails to reinforce monitoring points in wind turbine towers is proposed, including a signal transmitting device 1, a signal receiving device 2 and an analysis and processing device 3, wherein the signal transmitting device 1 and the signal receiving device 2 are respectively connected to the analysis and processing device 3.

[0042] The signal transmitting device 1 includes a power supply wire 1-1, an external bracket 1-2, a first shell 1-3, an oscillator transducer 1-4, an arc cover 1-5, a heating ring 1-6, a ring magnet 1-7, a handle screw rod 1-8 and a wire jack 1-9.

[0043] Among them, the first shell 1-3 mainly plays a protective and fixing role. The vibrator transducer 1-4 and the heating ring 1-6 are both arranged in the first shell 1-3. The heating ring 1-6 can be electrically heated to increase the temperature of the tower point. The vibrator transducer 1-4 can convert electrical energy into kinetic energy, which acts on the tower to generate sound wave vibration.

[0044] Specifically, the first shell 1-3 is a structure with one end open and the other end closed, and the opening of the first shell 1-3 is an arc-shaped opening. The setting of the arc-shaped opening enables the opening of the first shell 1-3 to be close to the circular tower;

[0045] The closed end of the first shell 1-3 is fixedly connected to the first bracket 1-2, and the first bracket 1-2 supports the entire signal transmitting device 1. A threaded hole is also provided at the center of the closed end of the first shell 1-3 for installing the handle screw rod 1-8.

[0046] The handle screw rod 1-8 is composed of a mounting bracket, a screw rod and a handle, wherein the mounting bracket is arranged inside the first housing 1-3, and the screw rod is arranged in a threaded hole at the center of the closed end of the first housing 1-3. One end of the screw rod penetrates into the first housing 1-3 and is fixedly connected to the mounting bracket, and the other end of the screw rod extends out of the closed end of the first housing 1-3 and is fixedly connected to the handle.

[0047] The handle screw rod 1-8 is mainly used to drive the vibrator transducer 1-4 and the heating ring 1-6 to move. Specifically, the vibrator transducer 1-4 and the heating ring 1-6 are fixedly connected to the mounting bracket of the handle screw rod 1-8. When the handle screw rod 1-8 is rotated, the handle screw rod 1-8 will drive the mounting bracket to move, and then drive the vibrator transducer 1-4 and the heating ring 1-6 to move, so that the vibrator transducer 1-4 and the heating ring 1-6 are close to or away from the tower wall.

[0048] The handle screw rod 1-8 is a hollow structure, and the tail of the handle screw rod 1-8 extending out of the first shell 1-3 is provided with a wire jack 1-9. Specifically, the interior of the screw rod is a hollow structure, and the tail of the screw rod extending out of the first shell 1-3 is provided with a wire jack 1-9. The power wires 1-1 of the vibrator transducer 1-4 and the heating ring 1-6 are both passed through the interior of the handle screw rod 1-8, and then connected to the power supply in the analysis and processing device 3. This arrangement avoids too many holes in the first shell 1-3, ensures that the appearance of the signal transmitting device 1 is not damaged, and simplifies the wiring method of the power wire 1-1.

[0049] An arc-shaped cover 1-5 is provided between the vibrator transducer 1-4 and the heating ring 1-6. The curvature of the arc-shaped cover 1-5 is the same as that of the first shell 1-3. The main function of the arc-shaped cover 1-5 is to reduce the energy loss of the vibrator transducer during sound wave transmission, and at the same time, it can reduce the influence of the heat generated by the heating ring 1-6 on the vibrator transducer.

[0050] An annular magnet 1-7 is also provided between the heating ring 1-6 and the opening of the first shell 1-3. The main function of the annular magnet 1-7 is to adsorb the signal transmitting device 1 on the tower wall, which is convenient for fixing the signal transmitting device 1 and avoids the situation where the manual handheld device is close to the tower wall.

[0051] The signal receiving device 2 is composed of a thermal sensing element 2-1, an acoustic wave sensing element (not shown in the figure), a second housing 2-2, a power signal transmission line 2-3 and a second bracket 2-4. The second bracket 2-4 supports the entire device.

[0052] The second shell 2-2 is similar in structure to the first shell 1-3, that is, it is also a structure with one end open and the other end closed. The difference is that the center of the closed end of the second shell 2-2 is a through hole for the power signal transmission line 2-3 to pass through.

[0053] Among them, the opening of the second shell 2-2 of the signal receiving device 2 is also set as an arc-shaped opening, so that the signal receiving device 2 can be tightly attached to the circular tower wall, and the second shell 2-2 of the signal receiving device 2 is larger than the first shell 1-3 of the signal transmitting device 1. This setting makes it easy for the signal receiving device 2 to fully receive the signal of the signal transmitting device 1 without the occurrence of signal loss, thereby ensuring the accuracy of the data.

[0054] The thermal sensing element 2-1 is fixedly disposed inside the second housing 2-2 and closely fits the second housing 2-2. The thermal sensing element 2-1 is an arc-shaped plate structure, and the arc is the same as that of the second housing 2-2. The acoustic wave sensing element can be disposed in the same manner as the thermal sensing element.

[0055] The thermal sensing element 2 - 1 and the acoustic wave sensing element are connected to the analysis and processing device 3 via the power signal transmission line 2 - 3 , and the captured thermal signals and acoustic wave signals of the object under test are converted into electrical signals and transmitted to the analysis and processing device 3 .

[0056] The analysis and processing device 3 is composed of a receiving device power signal transmission socket 3-1, a transmitting device power socket 3-2, a charging socket 3-3, a third shell 3-4, a transmitting device power switch 3-5, a signal processing switch 3-6 and a display screen 3-7, a power supply, and a signal processing module.

[0057] The receiving device power signal transmission socket 3-1, the transmitting device power socket 3-2, the charging socket 3-3, the transmitting device power switch 3-5, the signal processing switch 3-6 and the display screen 3-7 are all arranged on the third shell 3-4, and the third shell 3-4 is provided with a power supply and signal processing module inside.

[0058] The main function of the signal processing module is to convert the electrical signal received from the signal receiving device 2 into a thermal imaging image signal and an acoustic positioning image signal.

[0059] In this embodiment, the third housing 3 - 4 is a rectangular parallelepiped structure. In other embodiments, other structural forms such as a cylinder may also be used, and no excessive restrictions are made here.

[0060] The main function of the display screen 3-7 is to convert the electrical signals received by the signal processing module from the signal receiving device 2 into thermal imaging image signals and acoustic wave positioning image signals and present them for the convenience of users to observe.

[0061] The signal processing switch 3-6 is connected to the signal processing module and is a three-speed boat-shaped switch that can control the on and off of the signal processing work of the signal processing module and the work of the signal receiving device 2, and can arbitrarily switch the display type of the image on the display screen 3-7 and the receiving work of the thermal sensing element 2-1.

[0062] The power source is a lithium battery, which is connected to the charging socket 3 - 3 . The main function of the power source is to provide power support for the signal transmitting device 1 , the signal receiving device 2 and the analysis and processing device 3 .

[0063] Among them, the lithium battery provides power support for each module and functional component of the analysis and processing device 3 through the internal power conductor. At the same time, the lithium battery is connected to the power signal transmission line 2-3 of the signal receiving device 2 through the power signal transmission socket 3-1 of the receiving device, and provides power support for the signal receiving device 2 through the power signal transmission line 2-3. The signal receiving device 2 transmits the electrical signal to the analysis and processing device 3 through the power signal transmission line 2-3, and controls the operation of the signal receiving device 2 and the signal processing module through the signal processing switch 3-6.

[0064] The lithium battery is also connected to the power wire 1-1 of the signal transmitting device 1 through the transmitting device power socket 3-2, and provides power support for the signal transmitting device 1 through the power wire 1-1. The on and off of power transmission is controlled by the transmitting device power switch 3-5, thereby controlling the start and stop of the signal transmitting device 1. The transmitting device power switch 3-5 is provided with a heating ring switch position and a vibrator transducer switch position, and has a function of function switching, which can switch the operation of the vibrator transducer 1-4 and the heating ring 1-6 in the signal transmitting device 1.

[0065] In practical applications, the precise positioning of points inside and outside the tower can be achieved through the coordination of heat source induction positioning and acoustic wave induction positioning, which gets rid of the defects of rough positioning by naked eyes or rulers and will not cause damage to the tower. The whole device has a simple structure, flexible and convenient operation, saves time and effort, and can be accepted by on-site construction personnel.

[0066] Example 2

[0067] In another typical embodiment of the present application, a positioning method for a positioning device for reinforcing a monitoring point in a wind turbine tower with welding nails as in Embodiment 1 is provided, which is specifically as follows:

[0068] A. Check the locations to be tested on the construction site and mark the locations to be tested on the outside of the tower;

[0069] B. Place the signal transmitter 1 close to the position to be measured outside the tower, turn the handle screw 1-8 to make the heating ring 1-6 flush with the first shell 1-3 and close to the tower, connect the power wire 1-1 to the transmitter power socket 3-2, switch the transmitter power switch 3-5 to the heating ring switch, and let the heating ring heat the tower point for 5-10 minutes;

[0070] C. Preliminarily determine the positioning area on the inner side of the tower: According to the position of the outer signal transmitting device, preliminarily lock the approximate range of the signal receiving device on the inner side of the tower where the signal receiving device needs to be placed. The signal receiving device and the signal transmitting device are arranged opposite to each other on the inner and outer walls of the tower. Connect the power signal transmission line 2-3 of the signal receiving device 2 to the receiving device power signal transmission socket 3-1 of the analysis and processing device 3. Switch the signal processing switch 3-6 to the thermal sensing module to start the thermal sensing element of the signal receiving device 2. The display screen 3-7 starts to display the thermal sensing image at the current position of the signal receiving device. Put the signal receiving device close to the inner wall of the tower. Continuously adjust the position of the signal receiving device within the preliminary locking range while checking the image on the display screen 3-7 of the analysis and processing device 3 until the deepest color range of the imaging area in the display screen 3-7 is found, which indicates the highest temperature. At this time, the position of the inner wall of the tower where the signal receiving device is located is roughly the position of the signal transmitting device on the outer side of the tower. Mark the range and apply coupling agent, and turn off the thermal sensing element circuit.

[0071] D. Turn off the heating ring circuit of the signal transmitter, and switch the transmitter power switch 3-5 and the signal processing switch 3-6 to the vibrator transducer 1-4 part and the sound wave sensing element part respectively, so that the generated sound waves are transmitted to the tower. At the same time, the sound wave positioning image will be displayed on the display screen. Check the precise position of the sound wave reception on the display screen for final marking;

[0072] E. Turn off all switches and organize equipment.

[0073] The positioning device can be used to quickly and accurately position the inside and outside of the tower, and the operation is very simple. The equipment has a long service life and is economical and practical.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning method for a positioning device for reinforcing a monitoring point in a wind power tower with welding nails, characterized in that: The following steps are involved: Mark the position to be measured on the outside of the tower; Place the first shell and the heating element close to the position to be tested outside the tower, and heat the tower point; The positioning area is initially determined on the inner side of the tower, and the thermal sensing element receives the thermal signal and transmits it to the analysis and processing device, which converts it into a thermal sensing image. The second shell is placed close to the inner wall of the tower, and its position is adjusted. At the same time, according to the thermal sensing image, the deepest color of the imaging area is found, the range is marked, and coupling agent is applied; The vibrator transducer generates sound wave vibration, the sound wave sensing element receives the sound wave signal and transmits it to the analysis and processing device, which converts it into a sound wave positioning image and finally marks it according to the precise position of the sound wave reception; Among them, the positioning device includes a vibrator transducer and a heating element fixed to the first shell, and an acoustic wave sensing element and a thermal sensing element fixed to the second shell. The first shell and the second shell are arranged opposite to each other, and the acoustic wave sensing element receives the acoustic wave signal of the vibrator transducer and transmits it to the analysis and processing device, and the thermal sensing element receives the thermal signal of the heating element and transmits it to the analysis and processing device. After preliminary positioning by the thermal signal, precise positioning is performed according to the acoustic wave signal.

2. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 1, characterized in that: One end of the first shell is open and the other end is closed, and the opening of the first shell is an arc-shaped opening.

3. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 2, characterized in that: The closed end of the first shell is fixedly connected to the first bracket, and the center position of the closed end of the first shell is connected to the handle screw rod.

4. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 3, characterized in that: The handle screw rod comprises a screw rod body threadably connected to the first housing, a handle is fixedly arranged at one end of the screw rod body, and the other end of the screw rod body is fixedly connected to the vibrator transducer.

5. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 4, characterized in that: The screw rod body is also fixedly connected to the arc-shaped cover, and the heating element is fixed to the arc-shaped cover.

6. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 4, characterized in that: The screw rod body is a hollow structure, and the hollow structure can allow the power supply wires of the vibrator transducer and the heating element to pass through.

7. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 1, characterized in that: An annular magnet is also arranged between the heating element and the first shell opening.

8. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 1, characterized in that: The second shell has an arc-shaped opening, and the size of the second shell is larger than that of the first shell.

9. The positioning method for the positioning device for welding nails to reinforce the monitoring points in the wind power tower according to claim 1, characterized in that: The analysis and processing device includes a signal processing module, which receives the signal of the acoustic wave sensing element and converts it into an acoustic wave positioning image signal, and the signal processing module receives the signal of the thermal sensing element and converts it into a thermal imaging image signal; the signal processing module is also connected to the display screen.

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