Flange gap measuring device and system for fan tower drum

Abstract

The utility model relates to a device and a system for measuring a flange gap of a fan tower. The device comprises a semi-I-shaped base, a screw rod and a disc-type gasket, the semi-I-shaped base is fixed on the flange through the screw rod and the disc-type gasket, and a measuring circuit is arranged on a flexible base on the side surface of the semi-I-shaped base; the screw rod and the disc type gasket are used for adjusting the fixing degree of the semi-I-shaped base and the flange; the measuring circuit is used for measuring the deformation degree of the flexible base and determining the gap of the flange based on the deformation degree of the flexible base. According to the technical scheme, the device and the flange can be fastened through the semi-I-shaped base, the screw rod and the disc type gasket, installation is convenient, cost is low, the measuring circuit is arranged on the flexible base of the semi-I-shaped base to measure the deformation degree of the flexible base so as to determine the gap of the flange, the gap is not prone to being interfered by vibration signals and electromagnetic signals, and the reliability of the device is improved. Therefore, the measurement accuracy of the flange gap can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of flange gap monitoring of wind turbines, and in particular to a flange gap measuring device and system for a wind turbine tower. Background Art

[0002] The flange of the wind turbine tower is an important component for connecting the wind turbine generator set, and the quality of its connection directly affects the safe operation of the wind turbine. Due to the influence of various factors during the manufacturing, installation and operation process, the flange gap may change, resulting in a loose connection, thus affecting the normal operation of the wind turbine. In the existing technology, the flange gap measurement method mainly relies on manual measurement, but when measuring the gap size through the eddy current effect of the eddy current sensor, the laser displacement sensor emitting a laser beam and measuring the position change of the reflected laser beam, and the ultrasonic sensor by emitting and receiving ultrasonic waves, it is easy to be interfered by vibration signals and electromagnetic signals; when measuring the gap size by using the capacitance change of the capacitive sensor, there are problems such as large errors and low efficiency, and the existing measurement sensors are expensive and complicated to install, which is a technical problem that needs to be addressed urgently. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a flange gap measurement device for a wind turbine tower, the device comprising: a semi-type base, a screw and a disc gasket; the semi-type base is fixed to the flange by the screw and the disc gasket, and a measurement circuit is provided on a flexible base on the side of the semi-type base;

[0004] The screw and the disc gasket are used to adjust the degree of fixation between the semi-industrial base and the flange;

[0005] The measuring circuit is used to measure the deformation degree of the flexible base and determine the gap of the flange based on the deformation degree of the flexible base.

[0006] Optionally, the measurement circuit includes: a strain gauge and a signal processing circuit, the strain gauge is mounted on the flexible base, the strain gauge is connected to an input end of the signal processing circuit, the strain gauge deforms as the flexible base deforms, and a resistance value of the strain gauge changes as the strain gauge deforms;

[0007] The measuring circuit is used to detect the resistance value of the strain gauge through the signal processing circuit and output a corresponding output voltage value, so as to determine the gap of the flange according to the output voltage value.

[0008] Optionally, the signal processing circuit includes: a bridge measurement circuit, an amplification circuit and an output circuit.

[0009] Optionally, the bridge measurement circuit includes: a first resistor, a second resistor, a third resistor and a power supply;

[0010] The first end of the first resistor and the first end of the second resistor are connected to the first end and the second end of the third resistor respectively, and the second end of the first resistor and the second end of the second resistor are used as access ends of the bridge measurement circuit for accessing the strain gauge;

[0011] The positive electrode of the power supply is connected to the first end of the third resistor, the negative electrode of the power supply is grounded, and the second end of the second resistor;

[0012] The first end of the first resistor is also connected to the first input end of the amplifier circuit, and the connection point between the third resistor and the second resistor is connected to the second input end of the amplifier circuit.

[0013] Optionally, the amplifier circuit includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a first amplifier chip, wherein the first end of the sixth resistor serves as the first input end of the amplifier circuit, the second end of the sixth resistor is connected to the first end of the seventh resistor and the positive input pin of the first amplifier chip, the second end of the seventh resistor is connected to the output end of the first amplifier chip, and the output end of the first amplifier chip is connected to the input end of the output circuit;

[0014] The first end of the fourth resistor serves as the second input end of the amplifier circuit, the second end of the fourth resistor is connected to the input negative pin of the first amplifier chip and the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

[0015] Optionally, the output circuit includes: an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, and a second chip;

[0016] The first end of the eighth resistor serves as the input end of the output circuit, the second end of the eighth resistor is connected to the first end of the ninth resistor and the first end of the first capacitor, and the second end of the ninth resistor is connected to the first end of the second capacitor and the negative input pin of the second amplifier chip;

[0017] The negative electrodes of the first capacitor and the second capacitor are both grounded, the positive input pin of the second amplifier chip is connected to the output end of the second amplifier chip, and the output end of the second amplifier chip serves as the output end of the signal processing circuit.

[0018] Optionally, the first amplifier chip / the second amplifier chip includes: LMC6482AIMX / NOPB.

[0019] Optionally, the measurement circuit is used to:

[0020] The resistance value of the strain gauge is collected through the signal processing circuit. When the resistance value increases, the output voltage value increases, so as to determine the flange gap through the corresponding relationship between the preset voltage value and the flange gap.

[0021] Optionally, the installation position of the strain gauge is determined according to the direction of the gap of the flange.

[0022] According to a second aspect of an embodiment of the present disclosure, a flange gap measurement system for a wind turbine tower is provided, comprising: the flange gap measurement device for a wind turbine tower according to the first aspect of an embodiment of the present disclosure.

[0023] Through the above technical solution, the device and the flange can be fastened by a semi-industrial base, screws and disc gaskets, and the installation is convenient and low-cost. By setting a measuring circuit on the flexible base of the semi-industrial base to measure the deformation degree of the flexible base, the flange gap can be determined, which is not easily disturbed by vibration signals and electromagnetic signals, thereby improving the measurement accuracy of the flange gap.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 The figure is a structural diagram of a flange gap measuring device for a wind turbine tower according to an exemplary embodiment.

[0027] Figure 2 The present invention is a block diagram of a device for measuring the flange gap of a wind turbine tower according to an exemplary embodiment.

[0028] Figure 3 is a circuit diagram showing a bridge measurement circuit according to an exemplary embodiment.

[0029] Figure 4 is a circuit diagram of an amplifier circuit according to an exemplary embodiment.

[0030] Figure 5 is a circuit diagram of an output circuit according to an exemplary embodiment.

[0031] Figure 6 is a circuit diagram of a signal processing circuit according to an exemplary embodiment.

[0032] Figure 7The present invention is a block diagram of a flange gap measurement system for a wind turbine tower according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0034] It is understood that the terms "first", "second", etc. in this disclosure are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other and do not indicate a specific order or importance.

[0035] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0036] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0037] Figure 1 FIG. 1 is a structural diagram of a flange gap measuring device for a wind turbine tower according to an exemplary embodiment. Figure 1 As shown, the flange gap measuring device 100 of the wind turbine tower includes: a semi-type base 101, a screw 102 and a disc gasket 103; the semi-type base 101 is fixed to the flange by the screw 102 and the disc gasket 103, and a measurement circuit 1012 is provided on a flexible base 1011 on the side of the semi-type base 101;

[0038] The screw 102 and the disc gasket 103 are used to adjust the degree of fixation between the semi-industrial base 101 and the flange;

[0039] The measuring circuit 1012 is used to measure the deformation degree of the flexible base 1011 and determine the gap of the flange based on the deformation degree of the flexible base 1011.

[0040] For example, the flange gap measuring device 100 of the wind turbine tower is composed of a semi-type base 101, a screw 102 and a disc gasket 103. The screw 102 and the disc gasket 103 can adjust the fixing degree of the semi-type base 101 and the flange to achieve the fastening of the connection between the flange and the flange gap measuring device 100 of the wind turbine tower. The side of the semi-type base 101 is a flexible base 1011. The deformation degree of the flexible base 1011 is measured by the measuring circuit 1012 on the flexible base 1011. Circuit 1012 includes a strain gauge 10121 and a signal processing circuit 10122. The measured resistance value of the strain gauge 10121 is processed based on the signal processing circuit 10122, and the gap of the flange is determined based on the output signal of the signal processing circuit 10122. For example, the output signal of the signal processing circuit 10122 is a voltage. When the resistance value of the strain gauge 10121 increases, the output voltage value of the signal processing circuit 10122 increases. The gap of the flange is determined based on the voltage value, which can improve the measurement accuracy of the flange gap.

[0041] Through the above technical solution, the device and the flange can be fastened by a semi-industrial base, screws and disc gaskets, and the installation is convenient and low-cost. By setting a measuring circuit on the flexible base of the semi-industrial base to measure the deformation degree of the flexible base, the flange gap can be determined, which is not easily disturbed by vibration signals and electromagnetic signals, thereby improving the measurement accuracy of the flange gap.

[0042] Figure 2 is a block diagram of a flange gap measuring device for a wind turbine tower according to an exemplary embodiment. Figure 2 As shown, the measurement circuit 1012 includes: a strain gauge 10121 and a signal processing circuit 10122. The strain gauge 10121 is mounted on the flexible base 1011 and connected to the input end of the signal processing circuit 10122. The strain gauge 10121 deforms as the flexible base 1011 deforms, and the resistance value of the strain gauge 10121 changes as the strain gauge 10121 deforms.

[0043] The measuring circuit 1012 is used to detect the resistance value of the strain gauge 10121 through the signal processing circuit 10122 and output a corresponding output voltage value, so as to determine the gap of the flange according to the output voltage value.

[0044] For example, when the flange gap changes, the deformation of the strain gauge 10121 increases, and the resistance value of the strain gauge 10121 is collected and input into the signal processing circuit 10122 as input. The flange gap is determined by the voltage value output by the signal processing circuit 10122.

[0045] Optionally, the measurement circuit is used to:

[0046] The resistance value of the strain gauge 10121 is collected through the signal processing circuit 10122. When the resistance value increases, the output voltage value increases, so as to determine the flange gap through the corresponding relationship between the preset voltage value and the flange gap.

[0047] Exemplarily, when the deformation of the flexible base 1011 increases, the deformation of the strain gauge 10121 increases, and the resistance value of the strain gauge 10121 is collected, and the resistance value is used as input to the signal processing circuit 10122. The signal processing circuit 10122 outputs a voltage value, and the gap of the flange is determined based on the correspondence between the preset voltage value and the flange gap, wherein the gap value of the flange corresponds to the voltage value one-to-one. For example: when the resistance value of the strain gauge 10121 increases, the output voltage value of the signal processing circuit 10122 increases, and the gap value of the flange increases accordingly. The gap value of the flange is determined based on the correspondence between the preset voltage value and the flange gap.

[0048] Figure 3 is a circuit diagram of a bridge measurement circuit according to an exemplary embodiment. Figure 3 As shown, the bridge measurement circuit includes: a first resistor R1, a second resistor R2, a third resistor R3 and a power supply V1;

[0049] The first end of the first resistor R1 and the first end of the second resistor R2 are connected to the first end and the second end of the third resistor R3 respectively. The second end of the first resistor R1 and the second end of the second resistor R2 serve as access terminals of the bridge measurement circuit and are connected to the strain gauge 10121.

[0050] The positive electrode of the power source V1 is connected to the first end of the third resistor R3, the negative electrode of the power source V1 is grounded, and the second end of the second resistor R2;

[0051] The first end of the first resistor R1 is also connected to the first input end of the amplifier circuit, and the connection point between the third resistor R3 and the second resistor R2 is connected to the second input end of the amplifier circuit.

[0052] Exemplarily, the strain gauge 10121 is connected to the access end of the bridge measurement circuit in the signal processing circuit 10122. The bridge measurement circuit determines the resistance value of the strain gauge 10121 based on the deformation of the strain gauge 10121 and transmits the resistance value to the amplification circuit in the signal processing circuit 10122.

[0053] Figure 4 is a circuit diagram of an amplifier circuit according to an exemplary embodiment. Figure 4As shown, the amplifier circuit includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and a first amplifier chip U1, the first end of the sixth resistor R6 serves as the first input end of the amplifier circuit, the second end of the sixth resistor R6 is connected to the first end of the seventh resistor R7 and the input positive pin of the first amplifier chip U1, the second end of the seventh resistor R7 is connected to the output end of the first amplifier chip U1, and the output end of the first amplifier chip U1 is connected to the input end of the output circuit;

[0054] The first end of the fourth resistor R4 serves as the second input end of the amplifier circuit, the second end of the fourth resistor R4 is connected to the input negative pin of the first amplifier chip U1 and the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is grounded.

[0055] Exemplarily, the first end of the sixth resistor R6 is connected to the first end of the first resistor R1 of the bridge measurement circuit, and the first end of the fourth resistor R4 is connected to the connection point of the third resistor R3 and the second resistor R2 of the bridge measurement circuit. The amplification circuit amplifies the resistance value of the strain gauge 10121 and transmits the amplified resistance value to the output circuit in the signal processing circuit 10122.

[0056] Figure 5 is a circuit diagram of an output circuit according to an exemplary embodiment. Figure 5 As shown, the output circuit includes: an eighth resistor R8, a ninth resistor R9, a first capacitor C1, a second capacitor C2 and a second chip U2;

[0057] The first end of the eighth resistor R8 serves as the input end of the output circuit, the second end of the eighth resistor R8 is connected to the first end of the ninth resistor R9 and the first end of the first capacitor C1, and the second end of the ninth resistor R9 is connected to the first end of the second capacitor C2 and the negative input pin of the second amplifier chip U2;

[0058] The negative electrodes of the first capacitor C1 and the second capacitor C2 are both grounded, the positive input pin of the second amplifier chip U2 is connected to the output end of the second amplifier chip U2, and the output end of the second amplifier chip U2 serves as the output end of the signal processing circuit.

[0059] Exemplarily, the input end of the output circuit is the first end of the eighth resistor R8, which is connected to the second end of the seventh resistor R7 of the amplifier circuit and the output end of the first amplifier chip U1. The output circuit determines the output voltage value of the signal processing circuit 10122 based on the amplified resistance value transmitted by the amplifier circuit.

[0060] Optionally, the first amplifier chip U1 / the second amplifier chip U2 includes: LMC6482AIMX / NOPB.

[0061] Figure 6 is a circuit diagram of a signal processing circuit according to an exemplary embodiment. Figure 6 As shown, the signal processing circuit 10122 includes: a bridge measurement circuit, an amplification circuit and an output circuit.

[0062] The first resistor R1 of the bridge measurement circuit is connected to the first end of the sixth resistor R6 of the amplifier circuit, the connection point of the third resistor R3 and the second resistor R2 of the bridge measurement circuit is connected to the first end of the fourth resistor R4 of the amplifier circuit, the second end of the seventh resistor R7 of the amplifier circuit and the output end of the first amplifier chip U1 are connected to the first end of the eighth resistor R8 of the output circuit to form the signal processing circuit 10122. The bridge measurement circuit sends the resistance value of the strain gauge 10121 to the amplifier circuit, and the amplifier circuit amplifies the resistance value and sends it to the output circuit to determine the output voltage value of the signal processing circuit 10122.

[0063] Optionally, the installation position of the strain gauge 10121 is determined according to the direction of the gap of the flange.

[0064] Exemplarily, the gap of the flange is in the up-down direction, the strain gauge 10121 collects deformation in the up-down direction, and the installation position of the strain gauge 10121 is determined by the direction of the flange gap.

[0065] Figure 7 FIG. 1 is a block diagram of a flange gap measurement system for a wind turbine tower according to an exemplary embodiment. Figure 7 As shown, the flange gap measurement system 700 of the wind turbine tower includes: the flange gap measurement device 100 of the wind turbine tower.

[0066] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0067] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0068] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A flange gap measuring device for a wind turbine tower, characterized in that: The device comprises: a semi-industrial base, a screw and a disc gasket; the semi-industrial base is fixed to the flange via the screw and the disc gasket, and a measuring circuit is provided on a flexible base on the side of the semi-industrial base; The screw and the disc gasket are used to adjust the degree of fixation between the semi-industrial base and the flange; The measuring circuit is used to measure the deformation degree of the flexible base and determine the gap of the flange based on the deformation degree of the flexible base.

2. The device according to claim 1, characterized in that The measurement circuit includes: a strain gauge and a signal processing circuit, wherein the strain gauge is mounted on the flexible base and connected to an input end of the signal processing circuit, and the strain gauge deforms as the flexible base deforms, and the resistance value of the strain gauge changes as the strain gauge deforms; The measuring circuit is used to detect the resistance value of the strain gauge through the signal processing circuit and output a corresponding output voltage value, so as to determine the gap of the flange according to the output voltage value.

3. The device according to claim 2, characterized in that The signal processing circuit includes: a bridge measurement circuit, an amplifying circuit and an output circuit.

4. The device according to claim 3, characterized in that The bridge measurement circuit includes: a first resistor, a second resistor, a third resistor and a power supply; The first end of the first resistor and the first end of the second resistor are connected to the first end and the second end of the third resistor respectively, and the second end of the first resistor and the second end of the second resistor are used as access ends of the bridge measurement circuit for accessing the strain gauge; The positive electrode of the power supply is connected to the first end of the third resistor, the negative electrode of the power supply is grounded, and the second end of the second resistor; The first end of the first resistor is also connected to the first input end of the amplifier circuit, and the connection point between the third resistor and the second resistor is connected to the second input end of the amplifier circuit.

5. The device according to claim 3, characterized in that The amplifier circuit includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a first amplifier chip, wherein the first end of the sixth resistor serves as the first input end of the amplifier circuit, the second end of the sixth resistor is connected to the first end of the seventh resistor and the input positive pin of the first amplifier chip, the second end of the seventh resistor is connected to the output end of the first amplifier chip, and the output end of the first amplifier chip is connected to the input end of the output circuit; The first end of the fourth resistor serves as the second input end of the amplifier circuit, the second end of the fourth resistor is connected to the input negative pin of the first amplifier chip and the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

6. The device according to claim 5, characterized in that The output circuit includes: an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, and a second amplifier chip; The first end of the eighth resistor serves as the input end of the output circuit, the second end of the eighth resistor is connected to the first end of the ninth resistor and the first end of the first capacitor, and the second end of the ninth resistor is connected to the first end of the second capacitor and the negative input pin of the second amplifier chip; The negative electrodes of the first capacitor and the second capacitor are both grounded, the positive input pin of the second amplifier chip is connected to the output end of the second amplifier chip, and the output end of the second amplifier chip serves as the output end of the signal processing circuit.

7. The device according to claim 6, characterized in that The first amplifier chip / the second amplifier chip includes: LMC6482AIMX / NOPB.

8. The device according to claim 2, characterized in that The measuring circuit is used to: The resistance value of the strain gauge is collected through the signal processing circuit. When the resistance value increases, the output voltage value increases, so as to determine the flange gap through the corresponding relationship between the preset voltage value and the flange gap.

9. The device according to claim 2, characterized in that The installation position of the strain gauge is determined according to the direction of the gap of the flange.

10. A flange gap measurement system for a wind turbine tower, characterized in that: include: The flange gap measuring device for a wind turbine tower as described in claims 1-9.

Images