Fan monitoring and early warning device

Abstract

The utility model provides a fan monitoring and early warning device, and relates to the technical field of wind turbine generators. The draught fan monitoring and early warning device comprises a draught fan, an early warning assembly and a detection assembly, the draught fan comprises a tower drum and a cabin arranged at the top end of the tower drum, and one of the top of the tower drum and the cabin serves as a monitoring base; the early warning assembly comprises a power supply, a fixing cylinder and an infusion needle, the fixing cylinder and the infusion needle are both conductors, one is electrically connected to the positive electrode of the power supply, and the other is electrically connected to the negative electrode of the power supply; the fixed cylinder is fixedly connected to the monitoring seat and vertically extends, the top end of the hanging needle is hung on the monitoring seat, and the bottom end of the hanging needle downwards extends into the fixed cylinder and has a safety gap with the fixed cylinder; the detection assembly is connected to the early warning assembly and used for detecting the circuit on-off state of the early warning assembly. According to the fan monitoring and early warning device, the deflection state of the fan can be monitored and early warned, so that the use stability and safety of the fan are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind turbine technology field especially relates to a fan monitoring and early warning device. BACKGROUND

[0002] In the field of wind power generation, the nacelle and impeller of the fan are at a high altitude under the support of the tower drum to ensure its wind power generation efficiency. During the use of the fan, when the fan encounters strong wind, unstable airflow or other external factors, the fan may have a deflection phenomenon, and if this deflection cannot be monitored and warned in time, it is extremely likely to cause damage to the fan structure, even collapse and other serious consequences, thereby affecting the operation safety and economic benefits of the entire wind farm. SUMMARY

[0003] The utility model discloses a fan monitoring and early warning device to solve the technical problem that the deflection of the fan cannot be detected and warned in time.

[0004] To solve the above problems, the utility model provides a fan monitoring and early warning device, comprising:

[0005] The fan comprises a tower drum and a nacelle arranged at the top end of the tower drum, and one of the top of the tower drum and the nacelle serves as a monitoring seat;

[0006] The early warning assembly comprises a power supply, a fixed cylinder and a hanging needle, both the fixed cylinder and the hanging needle are conductive bodies, and one of them is electrically connected to the positive electrode of the power supply, and the other is electrically connected to the negative electrode of the power supply; the fixed cylinder is fixedly connected to the monitoring seat and vertically extends, the top end of the hanging needle is suspended from the monitoring seat, the bottom end extends into the fixed cylinder and a safety gap exists between the fixed cylinder; and,

[0007] The detection assembly is connected to the early warning assembly and is used for detecting the circuit on-off state of the early warning assembly.

[0008] Optionally, the monitoring seat has a horizontally extending monitoring wall surface, the top end of the fixed cylinder is fixedly connected to the monitoring wall surface, the top end of the hanging needle is suspended from the monitoring wall surface, and the suspension position is located in the cylinder inner area of the fixed cylinder.

[0009] Optionally, the top wall surface of the inner wall of the nacelle serves as the monitoring wall surface.

[0010] Optionally, the bottom end of the hanging needle is located in the fixed cylinder.

[0011] Optionally, the fixed cylinder is cylindrical, the hanging needle is cylindrical, and the hanging needle and the fixed cylinder are coaxially arranged.

[0012] Optionally, the fixing cylinder comprises at least two cylinder bodies, each of the cylinder bodies is successively sleeved from inside to outside, the axial relative positions of any two adjacent cylinder bodies can be adjusted, and the fixing end of the cylinder body located at the innermost side or the outermost side is fixedly connected to the monitoring seat.

[0013] Optionally, the fan monitoring and early warning device further comprises a monitor.

[0014] The detection assembly comprises a voltage sensor electrically connected to the early warning assembly, and the voltage sensor is communicatively connected to the monitor.

[0015] And / or, the detection assembly comprises a current sensor electrically connected to the early warning assembly, and the current sensor is communicatively connected to the monitor.

[0016] And / or, the detection assembly comprises an acceleration sensor electrically connected to the early warning assembly, and the acceleration sensor is communicatively connected to the monitor.

[0017] And / or, the detection assembly comprises a signal relay electrically connected to the early warning assembly, and the auxiliary action node of the signal relay is communicatively connected to the monitor.

[0018] Optionally, the monitor is communicatively connected with an alarm.

[0019] Optionally, the connection wires between the fixing cylinder, the hanging needle and the power supply are each coated with a shielding layer.

[0020] Optionally, the monitoring wall surface is provided with a plurality of clamping grooves arranged and extending along the circumferential direction thereof, the clamping grooves comprise a socket groove segment and a clamping groove segment along the extension direction thereof, the clamping groove segment comprises a horizontal groove body and a vertical groove body from top to bottom, the groove top wall and the groove side wall of the horizontal groove body are coplanar with the groove top wall and the groove side wall of the socket groove segment, and the top end of the vertical groove body is in communication with the middle part of the horizontal groove body and the bottom end is provided through.

[0021] The top end of the fixing cylinder is fixedly provided with a plurality of insulating buckle heads uniformly and spacedly arranged along the circumferential direction thereof, the insulating buckle head comprises a horizontal arm and a vertical arm connected to the bottom of the horizontal arm; a plurality of the insulating buckle heads correspond to a plurality of the clamping grooves one by one, and the vertical arm of the insulating buckle head is slidingly inserted into the vertical groove body of the corresponding clamping groove, and the horizontal arm of the insulating buckle head is slidingly clamped into the horizontal groove body of the corresponding clamping groove.

[0022] Optionally, the groove bottom wall of the horizontal groove body is provided with a limiting groove, and a first permanent magnet is embedded in the bottom of the limiting groove; a second permanent magnet is embedded in the bottom of the horizontal arm, and the bottom region of the horizontal arm is fitted into the limiting groove, and the second permanent magnet is magnetically attracted to the first permanent magnet.

[0023] The fan monitoring and early warning device provided by the utility model has the following advantages: on the one hand, the early warning assembly and the detection assembly are independent of the operation of the fan, the monitoring and early warning of the fan are not limited by the operation state of the fan, the inclined state of the fan can be monitored and early warned, especially the monitoring and early warning effect can be achieved on the fan in the transition stage from hoisting completion to delivery for use, the use stability and safety of the fan in the transition stage and the delivery stage are ensured, the economic and safety loss caused by the inclination and collapse of the fan is reduced, and the operation safety and economic benefits of the wind power field are ensured; on the other hand, the fixing cylinder and the hanging needle of the early warning assembly are installed on the same monitoring seat, the monitoring of the inclination of the tower cylinder can be realized through the vertical hanging property of the hanging needle and the follow-up property of the fixing seat, the structure is simple and convenient to arrange, and the accuracy and effectiveness of the inclination monitoring of the tower cylinder can be ensured; on the other hand, in the monitoring process, the power is consumed only after the fixing cylinder and the hanging needle are in contact and conductive, no power is consumed in the early continuous monitoring process, the use time of the early warning assembly and the fan monitoring and early warning device is greatly prolonged, and the maintenance difficulty of the early warning assembly and the fan monitoring and early warning device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0025] Figure 1 The schematic diagram of the fixing cylinder and the hanging needle being installed on the monitoring seat in the fan monitoring and early warning device provided by the embodiments of the utility model, wherein the monitoring seat does not incline;

[0026] Figure 2 The schematic diagram of the fixing cylinder and the hanging needle being installed on the monitoring seat in the fan monitoring and early warning device provided by the embodiments of the utility model, wherein the monitoring seat inclines, and the fixing cylinder and the hanging needle are in contact and conductive;

[0027] Figure 3 The schematic diagram of the fixing cylinder and the hanging needle being installed on the monitoring seat in the fan monitoring and early warning device provided by the embodiments of the utility model, wherein the fixing cylinder is in the telescopic form;

[0028] Figure 4 The partial sectional view schematic diagram of the fixing cylinder, the hanging needle and the hook in the fan monitoring and early warning device provided by the embodiments of the utility model;

[0029] Figure 5 The sectional view schematic diagram of the monitoring seat being provided with the clamping groove section in the fan monitoring and early warning device provided by the embodiments of the utility model;

[0030] Figure 6 The sectional view schematic diagram of the insulating buckle head clamping into the limiting groove in the fan monitoring and early warning device is provided.

[0031] Mark explanation:

[0032] 100-monitoring seat; 110-monitoring wall surface; 111-hook; 120-clamping groove section; 121-horizontal groove body; 121a-limiting groove; 121b-first permanent magnet; 122-vertical groove body; 200-early warning assembly; 210-fixing cylinder; 211-cylinder body; 220-hanging needle; 300-insulating buckle head; 310-horizontal arm; 311-second permanent magnet; 320-vertical arm. Specific implementation

[0033] The technical scheme of the utility model will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model 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 utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it 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 intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The embodiment provides a fan monitoring and early warning device, such as Figure 1 and Figure 2As shown, the device for detecting and warning the deflection of the tower drum of a wind turbine specifically comprises a wind turbine, a warning assembly 200 and a detection assembly (not shown in the figure), wherein the wind turbine comprises a tower drum and a nacelle arranged at the top end of the tower drum, and one of the top of the tower drum and the nacelle serves as a monitoring seat 100; the warning assembly 200 comprises a power supply (not shown in the figure), a fixed cylinder 210 and a hanging needle 220, both of which are conductive bodies, and one of which is electrically connected to the positive electrode of the power supply, and the other is electrically connected to the negative electrode of the power supply; the fixed cylinder 210 is fixedly connected to the monitoring seat 100 and vertically extends, the top end of the hanging needle 220 is suspended from the monitoring seat 100, the bottom end extends downward into the fixed cylinder 210 and a safety gap exists between the fixed cylinder 210, and the fixed cylinder 210 and the hanging needle 220 are both insulated from the monitoring seat 100; the detection assembly is connected to the warning assembly 200 for detecting the on-off state of the circuit of the warning assembly 200.

[0037] In the wind turbine monitoring and warning device provided by the embodiment, the wind turbine comprises a nacelle for loading an impeller and accommodating an impeller driving member, and a tower drum for supporting the nacelle and the impeller to a desired height, wherein the top of the nacelle or the tower drum serves as a monitoring seat 100 for mounting the warning assembly 200; the warning assembly 200 comprises a battery as a power supply and capable of being used portably, the positive and negative poles of the power supply are connected to one of the fixed cylinder 210 and the hanging needle 220 through connecting wires, and the circuit formed by the warning assembly 200 is independent of the circuit of the wind turbine itself and can be independently powered and used; the detection assembly is connected to the circuit formed by the warning assembly 200 for detecting the on-off state of the circuit.

[0038] The wind turbine is in a transition stage of not being connected to a running power supply during the period from hoisting completion to delivery for use, the inclination sensor of the wind turbine is in a closed state and cannot run and play a monitoring and warning role; in the present application, the warning assembly 200 and the detection assembly are installed on the monitoring seat 100 of the wind turbine to jointly constitute a wind turbine monitoring and warning device independent of the running state of the wind turbine, so as to detect and warn the deflection risk of the tower drum of the wind turbine, and ensure the stability and safety of the wind turbine, and the specific use is as follows:

[0039] At the beginning, the tower drum extends vertically, stably supports the nacelle and the impeller; the early warning assembly 200 is installed on the top of the tower drum with a higher height as the monitoring seat 100 or the nacelle, so as to ensure that the monitoring seat 100 can effectively transmit the deflection state of the tower drum to the early warning assembly 200, and correspondingly make the early warning assembly 200 can sensitively monitor the deflection degree of the tower drum, wherein the fixed cylinder 210 and the hanging needle 220 are insulated between the monitoring seat 100, so as to reduce the influence of the monitoring seat 100 connected to the power supply on the subsequent operation of the early warning assembly 200 and the fan, and ensure the stable operation of the early warning assembly 200 and the fan; the hanging needle 220 extends downward into the cylinder space of the fixed cylinder 210, and there is a safety gap between the hanging needle 220 and the fixed cylinder 210, and the two are in a non-contact state, so that the circuit of the early warning assembly 200 is in an open circuit state; at the same time, the length of the hanging needle 220 extending into the fixed cylinder 210 is greater than the maximum horizontal safety gap between the hanging needle 220 and the fixed cylinder 210, so as to ensure that when the tower drum deflection drives the fixed cylinder 210 to deflect, the hanging needle 220 can contact the inner wall of the fixed cylinder 210 and trigger the early warning assembly 200, and correspondingly ensure that the early warning assembly 200 and the detection assembly detect and warn the fan.

[0040] In use, the power supply continuously supplies power to the fixed cylinder 210 and the hanging needle 220, and the detection assembly detects the on-off state of the circuit formed by the early warning assembly 200 in real time; the fixed cylinder 210 is fixedly connected to the monitoring seat 100 and synchronously moves with the monitoring seat 100, and the hanging needle 220 is suspended on the monitoring seat 100, the top end thereof synchronously moves with the monitoring seat 100, and the whole hanging needle 220 keeps a vertical suspension state under the action of its own gravity; as shown in Figure 1 When the tower drum keeps vertical or deflects but the deflection angle is small, the fixed cylinder 210 keeps vertical extension or deflects at a small angle, the hanging needle 220 and the fixed cylinder 210 still keep a safety gap, and the two are not in contact, the circuit of the early warning assembly 200 is in an open circuit state, and the detection assembly correspondingly detects an open circuit detection result representing that the circuit is in an open circuit state, according to which it can be inferred that the tower drum does not deflect or the deflection angle is still within a safe range, and the fan is currently in a safe and stable state.

[0041] As shown in Figure 2As shown, when the tower tube is deflected and the deflection degree is gradually increased, the deflection angle of the fixed tube 210 is gradually increased synchronously with the tower tube, and correspondingly, one side wall of the fixed tube 210 gradually approaches the hanging needle 220, until the deflection degree of the tower tube reaches the safety angle threshold, the inner wall of the fixed tube 210 contacts the bottom end of the hanging needle 220, the fixed tube 210 and the hanging needle 220 are connected to form a path state with the power supply, the current, voltage and other electrical signals in the path circuit change compared with the circuit in the open circuit state, the detection assembly detects the change of the path detection result which can represent that the circuit is in the path state, and according to the path detection result, it can be inferred that the tower tube has been deflected and the deflection angle is large, and the dumping accident may occur, so it is necessary to maintain and adjust the tower tube, such as accurately adjusting the operation parameters of the fan, including reasonably adjusting the pitch angle of the fan blade, or optimizing the orientation angle of the whole fan, etc., so as to realize the monitoring and early warning of the deflection state of the fan in the transition stage and the running stage, improve the use stability and safety of the fan in the transition stage, effectively avoid the serious accidents such as collapse, blade damage and transmission system failure caused by excessive deflection of the fan, reduce the economic and safety losses caused by the deflection and collapse of the fan, and correspondingly ensure the operation safety and economic benefits of the wind farm.

[0042] Therefore, in the fan monitoring and early warning device provided by the embodiment, on the one hand, the early warning assembly 200 and the detection assembly are independent of the operation of the fan, and the monitoring and early warning of the fan are not limited by the operation state of the fan, so that the deflection state of the fan can be monitored and warned, especially during the transition stage from the completion of the hoisting of the fan to the delivery for use, the fan is not connected to the running power supply, so that the monitoring and early warning of the fan can be realized, thereby ensuring the use stability and safety of the fan in the transition stage and the delivery stage, reducing the economic and safety losses caused by the deflection and collapse of the fan, and correspondingly ensuring the operation safety and economic benefits of the wind farm; on the other hand, the fixed tube 210 and the hanging needle 220 of the early warning assembly 200 are installed on the same monitoring seat 100, and the deflection of the tower tube can be monitored through the vertical hanging property of the hanging needle 220 and the following property of the fixed seat, so that the structure is simple, the arrangement is convenient, and the accuracy and effectiveness of the deflection monitoring of the tower tube can be ensured; on the other hand, during the monitoring process, the power is consumed only after the fixed tube 210 and the hanging needle 220 are contacted and conducted, and no power is consumed during the early continuous monitoring process, so that the use time of the early warning assembly 200 and the fan monitoring and early warning device is greatly prolonged, and the maintenance difficulty of the early warning assembly 200 and the fan monitoring and early warning device is reduced.

[0043] Specifically, the fixed tube 210 and the hanging needle 220 can be made of high-strength, corrosion-resistant conductive metal materials, such as copper.

[0044] The fixed cylinder 210 can be electrically connected to the positive pole of the power supply, and the hanging needle 220 is electrically connected to the negative pole of the power supply; or the fixed cylinder 210 can be electrically connected to the negative pole of the power supply, and the hanging needle 220 is electrically connected to the positive pole of the power supply; the detection assembly can be powered by the power supply of the early warning assembly 200, or can be powered by a self-provided power supply.

[0045] In the embodiment, as shown in the figure, Figure 1 The monitoring seat 100 has a horizontally extending monitoring wall 110, the top end of the fixed cylinder 210 is fixedly connected to the monitoring wall 110, the top end of the hanging needle 220 is suspended from the monitoring wall 110, and the suspension position is located in the inner area of the fixed cylinder 210. One of the downward horizontal walls of the monitoring seat 100 is selected as the monitoring wall 110, the top ends of the hanging needle 220 and the fixed cylinder 210 are connected to the same monitoring wall 110, and the connection position of the hanging needle 220 and the monitoring wall 110 is located in the fixed cylinder 210. Through convenient installation operation, the vertical extension of the fixed cylinder 210 after installation can be ensured, and the upper needle body or the entire needle body of the hanging needle 220 is located in the fixed cylinder 210, which can ensure the effective length of the hanging needle 220 extending into the fixed cylinder 210, ensure the contact conduction of the fixed cylinder 210 and the hanging needle 220 when the fixed cylinder 210 is inclined, and thus ensure the effective monitoring of the fan deviation by the early warning assembly 200.

[0046] Specifically, in the embodiment, as shown in the figure, Figure 1 The bottom end of the hanging needle 220 is located in the fixed cylinder 210. The entire hanging needle 220 is located in the fixed cylinder 210, and the entire length of the hanging needle 220 is the effective length. On the basis of ensuring that the hanging needle 220 can contact and conduct with the fixed cylinder 210 in the inclined state to effectively monitor the fan deviation state, the length of the hanging needle 220 is reduced, the cost is reduced, and the space occupation of the hanging needle 220 is reduced. At the same time, the fixed cylinder 210 is arranged outside the hanging needle 220, which can block the wind for the hanging needle 220 to reduce the shaking of the hanging needle 220 caused by the wind, so as to reduce the misjudgment of the early warning assembly 200 and the detection assembly, thereby improving the early warning accuracy of the early warning assembly 200.

[0047] In this embodiment, the top wall surface of the cabin inner wall is used as the monitoring wall surface 110. The cabin is used as the monitoring seat 100, and the top wall surface of the cabin shell is used as the monitoring wall surface 110. The fixing cylinder 210 and the hanging needle 220 are both accommodated in the cabin and connected to the top wall surface of the cabin. In the monitoring and early warning process, the shell of the cabin covers the fixing cylinder 210 and the hanging needle 220, which can further reduce the situation that the hanging needle 220 is shaken by external wind and contacts the fixing cylinder 210 to cause the early warning assembly 200 and the detection assembly to misjudge, thereby further improving the early warning accuracy of the early warning assembly 200. In addition, compared with installing the early warning assembly 200 in the tower cylinder, the early warning assembly 200 is installed in the cabin, which is more convenient and has higher post-maintenance convenience.

[0048] Optionally, in this embodiment, as shown in Figure 1 The fixing cylinder 210 is cylindrical, the hanging needle 220 is cylindrical, and the hanging needle 220 is coaxial with the fixing cylinder 210. In the normal vertical state of the tower cylinder, the fixing cylinder 210 and the hanging needle 220 are both vertically extended, the horizontal distance between the hanging needle 220 and each region of the inner wall of the fixing cylinder 210 is equal and is the inner diameter of the fixing cylinder 210. In the monitoring and early warning process, the safety angle threshold at which the fixing cylinder 210 and the hanging needle 220 contact and conduct in any direction of the tower cylinder is equal, thereby making the monitoring and early warning of the wind turbine inclination degree by the early warning assembly 200 consistent and not affected by the inclination direction of the tower cylinder, and correspondingly improving the monitoring effectiveness of the early warning assembly 200 on the wind turbine inclination degree.

[0049] In this embodiment, as shown in Figure 3 The fixing cylinder 210 includes at least two cylinder bodies 211, each cylinder body 211 is sequentially sleeved from inside to outside, the axial relative position of any two adjacent cylinder bodies 211 can be adjusted, and the fixed end of the cylinder body 211 located at the innermost side or the outermost side is fixedly connected to the monitoring seat 100. The fixing cylinder 210 adopts a telescopic adjustment form. Specifically, the top end of the cylinder body located at the innermost side is fixed to the monitoring seat 100 as a fixed end, and any two adjacent cylinder bodies 211 can move relative to each other in the axial direction, thereby adjusting the axial length of the fixing cylinder 210, and correspondingly adjusting the inclination angle of the tower cylinder when the hanging needle 220 contacts and triggers the detection assembly with the inner wall of the fixing cylinder 210, thereby enabling the early warning assembly to be applicable to the inclination early warning of different types of wind turbines, and correspondingly improving the application range and functionality of the wind turbine monitoring and early warning device.

[0050] Specifically, the two adjacent cylinder bodies 211 are sleeved and can slide relative to each other in the axial direction, and the axial length of the fixing cylinder 210 is adjusted by the relative sliding of the two adjacent cylinder bodies 211; or the two adjacent cylinder bodies 211 are screwed through a threaded structure, and the axial length of the fixing cylinder 210 is adjusted by the relative rotation of the two adjacent cylinder bodies 211.

[0051] Specifically, as shown inFigure 3 As shown, the number of the cylinder bodies 211 in the fixed cylinder 210 can be four, and the lengths of the four cylinder bodies 211 are equal. The length of the cylinder body 211 can be 400 mm, and the four cylinder bodies are sequentially a first cylinder body, a second cylinder body, a third cylinder body, and a fourth cylinder body from inside to outside. When the first cylinder body, the second cylinder body, the third cylinder body, and the fourth cylinder body are all stacked and sleeved, the axial length of the four cylinder bodies is approximately 400 mm. When the first cylinder body, the second cylinder body, the third cylinder body, and the fourth cylinder body are all relatively extended, the axial length of the four cylinder bodies is approximately 1600 mm, and the axial length of the fixed cylinder 210 can be adjusted between 400 mm and 1600 mm.

[0052] The length from the bottom end of the hanging needle 220 to the monitoring seat 100 can be 1400 mm, the thickness of each cylinder body 211 is negligible, and the inner radius of each cylinder body is 120 mm. The axial length of the fixed cylinder 210 is at least 400 mm, and the bottom end of the inner wall of the first cylinder body is in contact with the hanging needle 220 to trigger the detection assembly. At this time, the angle between the axis of the hanging needle 220 and the axis of the first cylinder body is approximately 17.46°. The axial length of the fixed cylinder 210 is at most 1600 mm, and the inner wall of the fourth cylinder body is in contact with the hanging needle 220 to trigger the detection assembly. At this time, the angle between the axis of the hanging needle and the axis of the fourth cylinder body is approximately 4.92°. The warning angle of the warning assembly for the tower cylinder deflection angle can be adjusted between 4.92° and 17.46°. Specifically, the length of the fixed cylinder 210 can be adjusted according to the safety angle threshold of the fan model.

[0053] Of course, in other embodiments, the number and length of the cylinder bodies in the fixed cylinder 210 are not limited to the above exemplary descriptions, and can be specifically set as needed.

[0054] In this embodiment, the fan monitoring and warning device further includes a monitor. The detection assembly uses high-precision and low-power electronic components, which can quickly and accurately capture the change signal of the circuit formed by the warning assembly 200 and convert the detected signal into a wireless signal to feed back to the monitor. The detection assembly specifically can include a voltage sensor electrically connected to the warning assembly 200, and the voltage sensor is communicatively connected to the monitor. The monitor is installed in a monitoring room on the ground and has strong signal receiving and decoding capabilities. The monitor specifically includes a controller and a display connected to the controller. The detection assembly specifically uses a voltage sensor, and the voltage sensor is wirelessly connected to the controller of the monitor.

[0055] When the tower tube is not deflected or the deflection angle is small, the fixed cylinder 210 is not in contact with the hanging needle 220, and the circuit formed by the fixed cylinder 210, the connecting wire, the power supply and the hanging needle 220 is in an open state. Correspondingly, the voltage sensor cannot detect the voltage signal, and feeds back the corresponding zero voltage signal to the controller of the monitor. The controller feeds back the safety information that the tower tube is not deflected or the deflection angle is still within the safe range to the display, and displays it through the display. The operator can intuitively understand the deflection state of the fan through the display content of the display. When the deflection angle of the tower tube reaches the safety angle threshold, the fixed cylinder 210 is in contact with the hanging needle 220, and the circuit formed by the fixed cylinder 210, the connecting wire, the power supply and the hanging needle 220 is in a path state. Correspondingly, the voltage sensor can detect the voltage signal, and feeds back the corresponding voltage signal to the controller. The controller feeds back the early warning information that the tower tube has been deflected and the deflection angle is large, and there may be a dumping accident to the display, and displays it through the display. The operator can know the deflection state of the fan through the display content of the display, and timely maintain and adjust the fan, so as to effectively reduce the occurrence of fan dumping accidents, and improve the convenience of users to obtain monitoring and early warning results, and correspondingly improve the use convenience and monitoring and early warning effectiveness of the fan monitoring and early warning device.

[0056] In the embodiment, in addition to the above-mentioned voltage sensor, the detection assembly can also include a current sensor electrically connected to the early warning assembly 200, and the current sensor is communicatively connected to the monitor. When the tower tube is not deflected or the deflection angle is small, the circuit of the early warning assembly 200 is in an open state, the current sensor cannot measure the current signal of the circuit, and feeds back the corresponding zero current signal to the controller of the monitor. The controller feeds back the safety information that the tower tube is still within the safe range to the display, and displays it through the display. When the deflection angle of the tower tube reaches the safety angle threshold, the circuit of the early warning assembly 200 is in a path state, the current sensor can detect the current signal, and feeds back the corresponding current signal to the controller. The controller feeds back the early warning information that the tower tube may have a dumping accident to the display, and displays it through the display, thereby improving the convenience of users to obtain monitoring and early warning results, and correspondingly improving the use convenience and monitoring and early warning effectiveness of the fan monitoring and early warning device.

[0057] In the embodiment, the detection assembly can further include an acceleration sensor electrically connected to the early warning assembly 200, and the acceleration sensor is communicatively connected to the monitor. The acceleration sensor detects the acceleration of the tower tube deflection by detecting the current signal of the early warning assembly 200. Specifically, when the circuit of the early warning assembly 200 is in an open circuit state, the acceleration sensor cannot detect the current signal, and the monitor determines that the tower tube is in a safe range. When the inclination angle of the tower tube reaches the safety angle threshold, the circuit of the early warning assembly is in a closed circuit state, the acceleration sensor can detect the current signal, and the acceleration of the tower tube deflection is calculated by the frequency of the current signal. Then the measured acceleration signal is fed back to the controller of the monitor. The controller determines the deflection and swing of the wind turbine according to the received acceleration signal, and displays it through the display, thereby improving the monitoring and early warning function of the wind turbine monitoring and early warning device.

[0058] Of course, in other embodiments, the detection assembly can also be in other forms, as long as the parameters measured by the detection assembly can distinguish the on-off state of the circuit.

[0059] In the embodiment, the monitor is communicatively connected to an alarm. The controller is communicatively connected to the alarm. When the controller determines that the deflection of the tower tube is in a safe range according to the detection information fed back by the detection assembly, the controller controls the alarm to be in an off state. When the controller determines that the tower tube may have a toppling accident according to the detection information fed back by the detection assembly, the controller controls the alarm to start the sound and light alarm operation, such as voice prompt and red light flashing prompt light, to effectively prompt the operator to maintain and adjust the wind turbine, thereby further improving the monitoring and early warning effectiveness of the wind turbine monitoring and early warning device.

[0060] In the embodiment, the detection assembly includes a signal relay electrically connected to the early warning assembly 200, and the auxiliary action node of the signal relay is communicatively connected to the monitor. Specifically, the coil of the signal relay is connected in series into the conduction loop formed by the early warning assembly. When the hanging needle 220 does not contact the inner wall of the fixed cylinder 210, the loop is not conductive, the coil of the signal relay is not powered, and the auxiliary action node of the signal relay is not actuated. When the hanging needle 220 contacts the inner wall of the fixed cylinder 210 and is conductive, the coil of the signal relay is powered, and the auxiliary action node of the signal relay is actuated. At this time, an alarm signal can be triggered through another electrical circuit connected to the auxiliary action node.

[0061] In the embodiment, the connection wires between the fixed cylinder 210 and the hanging needle 220 and the power supply are each coated with a shielding layer. This reduces the influence of external electromagnetic interference on the signal transmission between the early warning assembly 200, the detection assembly, and the monitor, thereby improving the monitoring and early warning accuracy and effectiveness of the wind turbine monitoring and early warning device.

[0062] In the embodiment, the insulation type fixed connection between the fixed cylinder 210 and the monitoring wall surface 110 can adopt the following structure: the monitoring wall surface 110 is provided with a plurality of clamping grooves arranged along the circumferential direction and extending, the clamping grooves include a socket groove section and a clamping groove section 120 along the extending direction, the clamping groove section 120 includes a horizontal groove body 121 and a vertical groove body 122 from top to bottom, the groove top wall and the groove side wall of the horizontal groove body 121 are coplanar with the groove top wall and the groove side wall of the socket groove section, the top end of the vertical groove body 122 is communicated with the middle part of the horizontal groove body 121, and the bottom end is provided through; the top end of the fixed cylinder 210 is fixedly provided with a plurality of insulation buckle heads 300 uniformly and spaced apart along the circumferential direction, the insulation buckle head 300 includes a horizontal arm 310 and a vertical arm 320 connected to the bottom of the horizontal arm 310; the plurality of insulation buckle heads 300 correspond to the plurality of clamping grooves one by one, and the vertical arm 320 of the insulation buckle head 300 is slidingly inserted into the vertical groove body 122 of the corresponding clamping groove, and the horizontal arm 310 is slidingly clamped into the horizontal groove body 121 of the corresponding clamping groove.

[0063] The plurality of arc-shaped clamping grooves are arranged in a ring shape on the monitoring wall surface 110 to form a ring profile, the groove width direction of the socket groove section and the horizontal groove body 121 is consistent with the radial direction of the ring profile, the groove width of the socket groove section at each depth in the vertical direction is equal, the groove width of the horizontal groove body 121 at each depth in the vertical direction is equal, and the groove width of the socket groove section is also equal to the groove width of the horizontal groove body 121, the groove top wall of the horizontal groove body 121 is coplanar with the groove top wall of the socket groove section, and the two groove side walls of the horizontal groove body 121 are coplanar with the two groove side walls of the socket groove section one by one; the groove width of the vertical groove body 122 is smaller than the horizontal groove body 121 and is communicated with the middle position of the horizontal groove body 121 along the groove width direction, so that the horizontal groove section protrudes from the vertical groove body 122 at both ends in the groove width direction to form a stepped surface. The insulation buckle head 300 is made of insulating material, the groove width of the socket groove section is consistent with the extension length of the horizontal arm 310, the groove width of the vertical groove body 122 is consistent with the width of the vertical arm 320 and is smaller than the extension length of the horizontal arm 310; during connection, the extension length of each horizontal arm 310 is kept consistent with the groove width direction of the corresponding socket groove section, then each horizontal arm 310 is inserted into the corresponding socket groove section from bottom to top, the insulation buckle head 300 is moved horizontally towards the clamping groove section 120, so that the horizontal arm 310 is slidingly clamped into the corresponding horizontal groove body 121, the vertical arm 320 is slidingly clamped into the corresponding vertical groove body 122, the low end of the vertical arm 320 protrudes downward from the vertical groove body 122, and the fixed cylinder 210 is connected to the low end of the vertical arm 320, thereby completing the insulation type fixed connection between the fixed cylinder 210 and the monitoring wall surface 110, and the disassembly convenience of the fixed cylinder 210 is high.

[0064] In the embodiment, as Figure 5 and Figure 6As shown, the bottom wall of the transverse groove body 121 is provided with a limiting groove 121a, and the bottom of the limiting groove 121a is embedded with a first permanent magnet 121b; the bottom of the transverse arm 310 is embedded with a second permanent magnet 311, and the bottom region of the transverse arm 310 is fitted and clamped into the limiting groove 121a, and the second permanent magnet 311 is magnetically attracted to the first permanent magnet 121b. When the transverse arm 310 is clamped and slid into the transverse groove body 121 and the vertical arm 320 is clamped and slid into the vertical groove body 122, the insulating buckle head 300 is slid in a direction away from the corresponding socket groove segment until the transverse arm 310 extends out of the two ends of the vertical arm 320 and falls into the limiting groove 121a of the two stepped surfaces of the transverse groove body 121, respectively, and correspondingly, the second permanent magnet 311 is magnetically attracted to the first permanent magnet 121b, thereby limiting the transverse arm 310 along the circumferential installation position of the transverse groove body 121, and improving the limiting stability and firmness of the transverse arm 310 at the position, and correspondingly, the insulating buckle head 300 and the fixing cylinder 210 are stably and firmly connected to the clamping groove, reducing the occurrence of the insulating buckle head 300 sliding along the circumference of the clamping groove or even falling off during the monitoring and early warning process, and further ensuring the stable operation of the early warning assembly 200.

[0065] In the embodiment, the form of the hanging needle 220 suspended on the monitoring wall surface 110 can be as follows: the top end of the hanging needle 220 is fixedly provided with an insulating ball, and the monitoring wall surface 110 is provided with a hinged seat, the hinged seat is provided with a spherical groove, the groove opening of the spherical groove horizontally faces downward, and the maximum depth of the spherical groove along the vertical direction is greater than the radius of the spherical groove and less than 1.1 times the radius of the spherical groove; and the insulating ball is matched and inserted into the spherical groove. The insulating ball is made of insulating material and is spherical; in the spherical groove, the distance between the vertical line perpendicular to the plane where the groove opening of the spherical groove is located and passing through the spherical center of the spherical groove and the intersection between the groove opening and the groove wall is the maximum depth of the spherical groove, which is greater than the radius of the spherical groove and less than 1.1 times the radius of the spherical groove, so that the opening of the spherical groove faces downward and is in a conical shape, to ensure that the insulating ball can rotate in the spherical groove and cannot fall out of the spherical groove downward, and at the same time, the spherical groove opening limits the rotation angle of the insulating ball less, to increase the rotatable angle range of the insulating ball and the hanging needle 220, and correspondingly, to ensure that the hanging needle 220 can rotate relative to the spherical groove to be vertically hung within the safe angle threshold range under the action of its own gravity, thereby realizing the hinging of the hanging needle 220 and the monitoring wall surface 110, and ensuring the effective monitoring and early warning of the fan deflection state by the hanging needle 220 and the fixing cylinder 210.

[0066] In the embodiment, as shown in Figure 4 The form of the hanging needle 220 suspended on the monitoring wall surface 110 can also be as follows: the monitoring wall surface 110 is provided with an insulating hook 111, and the top end of the hanging needle 220 is provided with a hanging hole, and the hook 111 is hooked into the hanging hole, thereby suspending the hanging needle 220 on the monitoring seat 100.

[0067] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fan monitoring and early warning device, characterized in that, The wind turbine comprises a tower drum and a nacelle arranged at the top end of the tower drum, one of the top of the tower drum and the nacelle serving as a monitoring seat (100); The early warning assembly (200) comprises a power supply, a fixed cylinder (210) and a hanging needle (220), both of which are conductive bodies, and one of which is electrically connected to the positive electrode of the power supply, and the other is electrically connected to the negative electrode of the power supply; the fixed cylinder (210) is fixed to the monitoring seat (100) and vertically extends, the top end of the hanging needle (220) is suspended from the monitoring seat (100), the bottom end extends into the fixed cylinder (210) and there is a safety gap between the fixed cylinder (210); and The detection assembly is connected to the early warning assembly (200) for detecting the circuit on-off state of the early warning assembly (200). The monitoring seat (100) has a horizontally extending monitoring wall surface (110), the top end of the fixed cylinder (210) is fixed to the monitoring wall surface (110), and the top end of the hanging needle (220) is suspended from the monitoring wall surface (110), and the suspension is located in the inner area of the fixed cylinder (210).

2. The fan monitoring and warning device according to claim 1, characterized in that The top wall surface of the inner wall of the nacelle serves as the monitoring wall surface (110).

3. The fan monitoring and warning device of claim 2, wherein, The bottom end of the hanging needle (220) is located in the fixed cylinder (210).

4. The fan monitoring and warning device of claim 2, wherein, The fixed cylinder (210) is cylindrical, the hanging needle (220) is cylindrical, and the hanging needle (220) and the fixed cylinder (210) are coaxially arranged.

5. The fan monitoring and warning device according to any one of claims 1-4, characterized in that, The fixed cylinder (210) comprises at least two cylinder bodies (211), each of which is sequentially sleeved from inside to outside, the axial opposite positions of any two adjacent cylinder bodies (211) can be adjusted, and the fixed ends of the cylinder bodies (211) located at the innermost or outermost sides are fixed to the monitoring seat (100).

6. The fan monitoring and warning device according to any one of claims 1-4, characterized in that, The wind turbine monitoring and early warning device further comprises a monitor; 7. The fan monitoring and warning device according to any one of claims 1 to 4, characterized in that The detection assembly comprises a voltage sensor electrically connected to the early warning assembly (200), and the voltage sensor is communicatively connected to the monitor; And / or, the detection assembly comprises a current sensor electrically connected to the early warning assembly (200), and the current sensor is communicatively connected to the monitor; And / or, the detection assembly comprises an acceleration sensor electrically connected to the early warning assembly (200), and the acceleration sensor is communicatively connected to the monitor; And / or, the detection assembly comprises a signal relay electrically connected to the early warning assembly (200), and the auxiliary action node of the signal relay is communicatively connected to the monitor. The monitor is communicatively connected with an alarm.

8. The fan monitoring and warning device of claim 7, wherein, ​ 9. The fan monitoring and warning device according to any one of claims 2-4, characterized in that, The monitoring wall (110) is provided with a plurality of clamping grooves arranged along the circumference and extending, the clamping grooves include a socket groove section and a clamping groove section (120) along the extending direction, the clamping groove section (120) includes a transverse groove body (121) and a vertical groove body (122) from top to bottom, the groove top wall and the groove side wall of the transverse groove body (121) are coplanar with the groove top wall and the groove side wall of the socket groove section respectively, the top end of the vertical groove body (122) is communicated with the middle part of the transverse groove body (121), and the bottom end is provided through; The top end of the fixing cylinder (210) is fixedly provided with a plurality of insulating buckle heads (300) uniformly and spaced apart along the circumference, the insulating buckle head (300) includes a transverse arm (310) and a vertical arm (320) connected to the bottom of the transverse arm (310); a plurality of the insulating buckle heads (300) correspond to a plurality of the clamping grooves one by one, and the vertical arm (320) of the insulating buckle head (300) is slidingly inserted into the vertical groove body (122) of the corresponding clamping groove, and the transverse arm (310) is slidingly clamped in the transverse groove body (121) of the corresponding clamping groove.

10. The fan monitoring and warning device of claim 9, wherein, The groove bottom wall of the transverse groove body (121) is provided with a limiting groove (121a), the bottom of the limiting groove (121a) is embedded with a first permanent magnet (121b); the bottom of the transverse arm (310) is embedded with a second permanent magnet (311), the bottom area of the transverse arm (310) is fitted into the limiting groove (121a), and the second permanent magnet (311) is magnetically attracted to the first permanent magnet (121b).

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