System for acquiring and coping with inclination angle of offshore large-diameter single pile in real time

Abstract

The utility model discloses a system for acquiring and coping with the inclination angle of an offshore large-diameter single pile in real time, which relates to the field of offshore wind power monitoring and comprises a sensor group arranged on the single pile and capable of acquiring the inclination angle of the single pile; the sensor group is connected with a signal input end of a main control system, and a signal output end of the main control system is connected with the wind turbine generator. According to the utility model, the deflection angle of the pile body of the single pile can be monitored in real time, corresponding countermeasures can be taken, and the normal operation of the offshore wind turbine generator can be effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore wind power monitoring field especially a system of real time acquisition and response to offshore large diameter single pile inclination. BACKGROUND

[0002] The single pile foundation of offshore wind turbine set will bear the long-term action of horizontal load such as strong wind load, wave impact in its normal working life, and under the long-term action of these low-frequency cyclic loads, the single pile foundation will appear permanent lateral deformation. When the lateral deflection of pile body exceeds 0.5 DEG, it can cause the wind driven generator to be unable to operate normally. Therefore, the lateral deformation state of single pile foundation needs to be monitored in real time and corresponding response measures are made to protect the normal operation of offshore wind turbine set. SUMMARY

[0003] The utility model discloses a utility model aims at: in view of the above -mentioned problem, provide a kind of system of real time acquisition and response to offshore large diameter single pile inclination, the deflection angle of single pile pile body can be monitored in real time, and corresponding response measures are made, effectively protect the normal operation of offshore wind turbine set.

[0004] The utility model discloses the technical scheme as follows: a kind of system of real time acquisition and response to offshore large diameter single pile inclination, including the sensor group being set on single pile, the sensor group can obtain the inclination angle of single pile;The signal input end of main control system is connected to the sensor group, and the signal output end of main control system is connected with wind turbine set.

[0005] Further, the sensor group includes two inclination sensors, two inclination sensors are arranged in mutually perpendicular posture, and the inclination angle in Y direction and X direction is obtained respectively.

[0006] Further, the inclination sensor is fixed on single pile by cementing.

[0007] Further, it further includes protective cover, the protective cover is sealedly fixed with single pile, and inclination sensor is located in protective cover.

[0008] Further, the protective cover is hemispherical.

[0009] Further, the signal line of inclination sensor passes through protective cover and is fixedly connected with protective cover;Or protective cover is provided with expansion piece, and inclination sensor is connected with the input end of expansion piece, and the output end of expansion piece is connected with main control system.

[0010] Further, the protective cover is sealedly fixedly connected with single pile by cementing.

[0011] As the above technical scheme is adopted, the utility model has the beneficial effects that:

[0012] The utility model discloses a sensor group is obtained in real time the inclination of offshore large diameter single pile, and according to the inclination obtained, the main control system controls the wind turbine set to make the corresponding countermeasure, thereby effectively protecting the normal operation of offshore wind turbine set. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be explained by example and with reference to the drawings, wherein:

[0014] Fig. 1 It is the structural schematic diagram of the system;

[0015] Fig. 2 It is the installation schematic drawing of the protection cover and the inclination sensor installation on single pile;

[0016] Mark in drawing: 1-single pile;2-inclination sensor;3-main control system;4-wind turbine set;5-protection cover. DETAILED DESCRIPTION

[0017] In the description of the present specification, it needs to be explained that if the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, or the orientation or position relationship of the product of the specification when it is used conventionally, it is only for the convenience of describing the specification and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the specification.

[0018] In addition, in the description of the present specification, if the terms "horizontal", "vertical" and the like appear, it does not mean that the component must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0019] In the description of the present specification, it also needs to be explained that unless otherwise explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, the connection can be fixed connection, or detachable connection, or integrally connected; It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements.

[0020] Example 1

[0021] As Figs. 1-2As shown, a system for real-time acquisition and response to the inclination of a large-diameter single pile at sea includes a sensor group arranged on the single pile 1, which is preferably installed at the mud surface position of the single pile 1, i.e. the position where the single pile intersects with the seabed surface, and which can acquire the inclination angle of the single pile 1; the sensor group is connected with the signal input end of a main control system 3, and the signal output end of the main control system 3 is connected with a wind turbine generator set 4.

[0022] In this embodiment, the inclination of the large-diameter single pile 1 at sea is acquired in real time by the sensor group, and according to the acquired inclination, the main control system 3 controls the wind turbine generator set 4 to take corresponding response measures, thereby effectively protecting the normal operation of the offshore wind turbine generator set 4.

[0023] Specifically, the sensor group includes two inclination sensors 2 arranged in a mutually perpendicular attitude, which respectively acquire the inclination angles in the Y direction and the X direction.

[0024] More specifically, the entire working process is as follows:

[0025] S1: The two inclination sensors 2 are respectively installed on the north side and the west side of the single pile 1;

[0026] S2: In the case of no or small wind speed, the yaw action is performed in the idling state of the wind turbine generator set 4 to realize the calibration of the measurement data of the inclination sensors 2 and acquire the calibration data curve;

[0027] S3: The wind turbine generator set 4 is calibrated to the north, and the inclination data of the two inclination sensors 2 and the yaw position angle of the set are collected and stored in the collector for calculating the inclination angle of the single pile 1 in real time;

[0028] S4: The recorded inclination angle value is used to correct the data calibration of the inclination sensors 2, and the current cabin position angle is combined to calculate the inclination of the single pile 1 in real time, and the specific reference formula is as follows:

[0029] θ = θ1cosα + θ2sinα

[0030] Wherein: θ1 is the data measured by the inclination sensor 2 installed on the north side; θ2 is the data measured by the inclination sensor 2 installed on the west side, and α is the angle of the absolute direction of the cabin;

[0031] S5: The main control system 3 acquires the size of the inclination of the single pile 1, and judges the size of the inclination of the single pile 1 and the set inclination threshold value, and if it exceeds the set threshold value, the main control system 3 will feed back the signal in real time to control the wind wheel thrust (such as the pitch angle) to ensure that the rotation angle does not exceed the limit;

[0032] S6: If it is impossible to control the rotation angle within the allowed range, the main control system 3 will directly control the offshore wind turbine generator set 4 to shut down to avoid safety accidents.

[0033] Preferably, the inclination sensor 2 can be a single-axis inclination sensor 2 of model BWK215CAN.

[0034] Embodiment 2

[0035] On the basis of embodiment 1, a further feasible specific implementation is proposed.

[0036] In a feasible implementation, the inclination sensor 2 is fixed on the monopile 1 by gluing, so as to avoid adding a structure for installing the inclination sensor 2 on the monopile 1, such as avoiding opening a screw hole.

[0037] In a feasible implementation, as shown in Fig. 2 The protection cover 5 is further provided, which is sealingly fixed with the monopile 1 and in which the inclination sensor 2 is located, and the protection cover 5 is used for protecting the inclination sensor 2.

[0038] Further, the protection cover 5 is hemispherical and is inverted on the monopile 1; on the one hand, the hemispherical protection cover 5 has strong stress capacity and impact resistance, effectively avoiding the inclination sensor 2 from being crushed or hit; on the other hand, the hemispherical protection cover 5 can effectively resist strong wind load and wave impact, avoiding the inclination sensor 2 from being deviated to cause measurement error under the action of strong wind load or / and wave impact.

[0039] Further, the signal line of the inclination sensor 2 passes through the protection cover 5 and is fixedly connected with the protection cover 5; or an extension piece is arranged on the protection cover 5, the inclination sensor 2 is connected with an input end of the extension piece, and an output end of the extension piece is connected with the main control system 3; through the two modes, the stress point of the signal line is transferred to the protection cover 5, effectively avoiding the position of the signal line from being changed due to inadvertent pulling of an operator, and ensuring that the measurement data of the inclination sensor 2 remains in a stable environment.

[0040] Further, the protection cover 5 is sealingly fixedly connected with the monopile 1 by gluing, stabilizing the environment in the protection cover 5, avoiding water vapor from entering the protection cover 5, and ensuring the service life of the inclination sensor 2.

[0041] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature disclosed in the specification or any new combination, and any new method or process step or any new combination disclosed.

Claims

1. A system for real-time acquisition and response to offshore large diameter monopile inclination, characterized by: The sensor group is arranged on the single pile (1) and can acquire the inclination angle of the single pile (1); the sensor group is connected with the signal input end of the main control system (3), and the signal output end of the main control system (3) is connected with the wind turbine (4).

2. The system of claim 1, wherein: The sensor group comprises two inclination sensors (2) which are arranged in a mutually perpendicular posture and acquire the inclination angles in the Y direction and the X direction respectively.

3. The system of claim 2, wherein: The inclination sensor (2) is fixed on the single pile (1) by gluing.

4. The system of claim 2, wherein: A protective cover (5) is further arranged, which is sealingly fixed with the single pile (1) and the inclination sensor (2) is located in the protective cover (5).

5. The system of claim 4, wherein: The protective cover (5) is hemispherical.

6. The system of claim 4, wherein: The signal line of the inclination sensor (2) passes through the protective cover (5) and is fixedly connected with the protective cover (5); or an extension piece is arranged on the protective cover (5), the inclination sensor (2) is connected with the input end of the extension piece, and the output end of the extension piece is connected with the main control system (3).

7. The system of claim 4, wherein: The protective cover (5) is sealingly and fixedly connected with the single pile (1) by gluing.

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