Wind power equipment temperature monitoring device based on distributed sensing

Abstract

The utility model discloses a wind power equipment temperature monitoring device based on distributed sensing, which belongs to the technical field of wind power equipment temperature monitoring, and is characterized in that distributed optical fiber temperature sensors are arranged at the gear meshing position of a gearbox and the bearing seat position of a motor rotating shaft through mounting seats, and inner cylinders of the mounting seats are coaxially fixed in the opening end of a seat tube; the end of the inner cylinder is connected with the end face of one end of a piston block through a tension spring, a valve plate is hinged to the round sliding hole end of the piston block, a protective cylinder fixed to the closed end of the inner cylinder is arranged outside the other end of the piston block, a distributed optical fiber temperature sensor coaxial with the piston block is arranged in the protective cylinder, and a driving element is arranged at the end of a gear or a rotating shaft. The driving element can push the piston block to move towards the protective cylinder when rotating along with the gear or the rotating shaft. According to the utility model, the distributed optical fiber temperature sensors can be well distributed and installed around key elements of wind power equipment, automatic monitoring is realized, and the monitoring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a temperature monitoring technology for a wind turbine generator set, in particular to a temperature monitoring device for wind power equipment based on distributed sensing. Background Art

[0002] Wind turbines generate significant heat during operation. Excessive temperatures can lead to overheating, impacting performance and lifespan. In particular, elevated temperatures in key components can reduce mechanical strength and potentially lead to accidents. Real-time temperature monitoring can promptly identify and address potential safety hazards, avoiding economic losses caused by downtime, thereby improving the overall efficiency and reliability of wind power generation. Temperature monitoring systems can automatically diagnose the type, severity, and location of wind turbine faults. By setting preset alarm thresholds, they automatically issue warnings or alarms when monitored data exceeds these thresholds, prompting users to address the issue promptly. By monitoring and analyzing parameters like temperature, optimal power generation plans can be developed to improve wind energy utilization and reduce operating costs. For example, wind turbine startup and shutdown can be rationally scheduled based on wind speed forecasts for different time periods to achieve optimal power generation.

[0003] Therefore, to ensure the safe operation of wind turbine equipment and extend its service life, it is necessary to monitor the temperature changes of some key components, promptly detect equipment overheating, and take appropriate cooling measures to extend the service life of the equipment. For the temperature detection of general equipment, temperature sensors are currently used for direct detection. However, since wind turbines involve multiple key components, more locations need to be detected, making ordinary temperature sensors difficult to meet the requirements.

[0004] Distributed fiber optic temperature sensors measure based on optical principles, boasting extremely high sensitivity and stability. Using light as a transmission medium, they are unaffected by electromagnetic interference, inherently safe, and highly resistant to electromagnetic interference. Utilizing a metallized packaging process, they offer thermal conductivity and high strength. They are compact, compact, easy to deploy, resistant to electromagnetic interference, highly accurate, and durable. They can be surface-mounted or internally deployed. Furthermore, their excellent distributed measurement capabilities are a key feature. Fiber Bragg grating sensors support multi-point, distributed measurement, enabling monitoring tasks to be completed together, significantly improving monitoring efficiency and accuracy.

[0005] However, the existing records of the installation and use of distributed fiber optic temperature sensors on wind power generation equipment are mostly based on macro-discussions at the principle level, and there is no practical installation method. As a special type of power generation equipment, wind power equipment is very important for how to start up and monitor it more automatically after installation. Utility Model Content

[0006] (1) Technical problems solved

[0007] In response to the shortcomings of the existing technology, the utility model provides a wind power equipment temperature monitoring device based on distributed sensing. Based on the distributed detection performance of the distributed optical fiber temperature sensor, a special installation structure is designed to automatically monitor the temperature of some key components of the generator set, which effectively solves the problem of how to better install and use the distributed optical fiber temperature sensor on the wind turbine set.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature monitoring device for wind power equipment based on distributed sensing, comprising a plurality of temperature sensors, each of which is provided with a distributed optical fiber temperature sensor at the gear meshing position of the gearbox and at the bearing seat for mounting the generator shaft through a mounting seat, the mounting seat comprising a seat tube and an inner tube located within the seat tube, a tension spring, a piston block, a valve plate, and a protective tube, wherein the inner tube is coaxially fixed within the open end of the seat tube, and the end of the inner tube is connected to the end face of one end of the piston block through a tension spring. The piston block has a circular sliding hole at the end thereof which is hingedly blocked by the valve plate, and the piston block is slidably mounted in the seat tube. The other end of the piston block is provided with the protective sleeve fixed at the closed end of the inner tube. The distributed optical fiber temperature sensor coaxial with the piston block is provided in the protective sleeve. When the piston block is sheathed on the outside of the protective sleeve during the sliding process, the protective sleeve pushes the valve plate open. A driving element is provided at the end of the gear or the rotating shaft, and the driving element can push the piston block toward the protective sleeve when the gear or the rotating shaft rotates.

[0010] Furthermore, the driving element is a magnet, which is fixed on the end face of the gear or the end face of the rotating shaft. The seat tube is arranged parallel to the gear shaft of the gear or the rotating shaft, and when the magnet rotates with the gear or the rotating shaft, it can push the piston block toward one end of the casing by exerting a repulsive force on the piston block when facing the open end of the seat tube.

[0011] Furthermore, a plurality of annular strip grooves are provided on the inner wall of one section of the tube hole in the seat tube for axial movement of the piston block, and the bottom of the strip grooves has a vent hole, and the length direction of the strip grooves is parallel to the axial direction of the tube hole, so that when the piston block slides onto the casing, it is completely located in one section of the tube hole.

[0012] Furthermore, a positioning screw sleeve is fixed to the outer wall of the protective sleeve in a threaded manner. When the positioning screw sleeve contacts the end surface of the piston block, the protective sleeve pushes the valve plate to a position where the circular sliding hole port is completely exposed.

[0013] Furthermore, the valve plate is suspended at the port of the circular sliding hole, and one side of the valve plate is hinged to the outside of one side of the port of the circular sliding hole through torsion spring damping, and completely covers the port.

[0014] Furthermore, the inner wall of the inner cylinder facing the piston block has a sink, and the sink is connected to a tension spring coaxially arranged in the seat tube; the piston block has an inner liner integrally formed at one end facing the inner cylinder, and the outer wall of the inner liner is in axial sliding contact with the inner wall of the inner cylinder.

[0015] Furthermore, a connecting ring is coaxially provided at the sinking platform, one end of the connecting ring is connected to one end of the tension spring, and the other end is rotatably connected to an adjusting screw installed in the wall of the inner cylinder in a threaded manner, so that when the adjusting screw is rotated, the connecting ring can be moved linearly above the step surface of the sinking platform.

[0016] Furthermore, the end of the adjusting screw rod has a T-shaped bolt portion, and the T-shaped bolt portion is rotatably connected to the connecting hole in the end surface of the connecting ring, and the longitudinal section of the connecting hole is T-shaped.

[0017] Furthermore, a rectangular slider is fixed on the outer cylindrical surface of the piston block, and a sliding groove is provided on the inner wall of the seat tube for the rectangular sliding hole to slide linearly. A conductive column is embedded in the bottom of the sliding groove along its length direction. When the piston block is in the initial position, the rectangular sliding hole does not contact the conductive column. When the piston block moves toward one end of the casing, the rectangular sliding hole maintains sliding contact with the conductive column and conducts a control circuit. The control circuit controls the switch of the distributed optical fiber temperature sensor.

[0018] Furthermore, the piston block has a hollow cylindrical structure, and in an initial state, the end surface of the piston block is arranged tightly against the end surface of the inner cylinder.

[0019] (3) Beneficial effects

[0020] The present invention provides a temperature monitoring device for wind turbines based on distributed sensing, which has the following beneficial effects: using a specially designed distributed fiber optic temperature sensor mounting structure, the distributed fiber optic temperature sensors are adaptively mounted on key components of the wind turbine, such as the gearbox, generator, and bearings. For example, distributed fiber optic temperature sensors can be mounted on the gear meshing area inside the gearbox or near the bearing seat to monitor the temperature changes of these parts in real time. Alternatively, on rotating parts such as the generator rotor, several sensors can be systematically arranged to obtain accurate temperature information in key areas prone to heat. This can early detect temperature anomalies in certain special parts of the wind turbine, avoid corresponding faults, and ensure wind power generation efficiency. The present invention can quickly mount the distributed fiber optic temperature sensor in a specially designed mounting bracket, and then fix the mounting bracket to the vicinity of the corresponding component through existing components such as connecting rods. Based on the rotational characteristics of the gears, rotor, etc. within the wind turbine, the distributed fiber optic temperature sensor can automatically keep the monitoring system in a shutdown state when there is no wind and the wind turbine is not operating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1-Figure 2 Schematic diagrams of two specific installation structures of distributed optical fiber temperature sensors;

[0022] Figure 3 for Figure 2 A magnified view of the structure at A in FIG;

[0023] Figure 4 It is a schematic diagram of the right end face of the connecting ring;

[0024] Figure 5 for Figure 2 A magnified view of the structure at point B in FIG.

[0025] In the figure: seat tube 1, inner tube 2, tension spring 3, piston block 4, strip groove 5, valve plate 6, inner liner 7, circular sliding hole 8, protective tube 9, distributed optical fiber temperature sensor 10, positioning screw sleeve 11, connecting ring 12, adjusting screw 13, rectangular slider 14, conductive column 15. DETAILED DESCRIPTION

[0026] This specification will clearly and completely express the technical solutions in the following examples based on the drawings of the embodiments of the present invention. The implementation methods described in this specification are only some of the embodiments of the present invention, not all of them. All other embodiments derived from these embodiments in this application by persons of ordinary skill in the art without any creative effort should fall within the scope of protection of the present invention.

[0027] A specific embodiment of the present invention is to design a temperature monitoring device for wind power equipment based on distributed sensing, including a number of distributed optical fiber temperature sensors 10, which detect the temperature of their respective corresponding parts relatively independently of each other. For example, near the gear meshing part of the gearbox, or near the generator shaft, such as near the bearing seat for installing the generator shaft, each of them is specially installed with a corresponding distributed optical fiber temperature sensor 10 through a mounting seat to detect the temperature change of each key part. Specifically, the mounting seat in this embodiment, in terms of its structure, mainly includes a seat tube 1 and an inner tube 2, a tension spring 3, a piston block 4, a valve plate 6, and a protective tube 9 located inside the seat tube 1. When it is specifically made, if Figure 1 The inner tube 2 used should be coaxially fixed in the open end of the seat tube 1, and the end of the inner tube 2 is specifically connected to the end face of one end of the piston block 4 through a tension spring 3 to restrain the connection of the piston block 4. The piston block 4 has an axial end, which needs to be hinged to block a circular sliding hole 8 with a valve plate 6. Under normal conditions, that is, when the system is not working, the valve plate 6 closes the opening of the circular sliding hole 8. After the piston block 4 is slidably installed in the seat tube 1, a protective tube 9 fixed to the closed end of the inner tube 2 is provided outside the other end of the piston block 4. A distributed optical fiber temperature sensor 10 coaxial with the piston block 4 is provided in this protective tube 9. In this way, the optical signal emitted by the sensor can only be emitted outward through the protective tube 9. If the front end of the protective tube 9 is blocked, the temperature change in the predetermined area in front of the blocked area cannot be detected. In short, in this embodiment, when the piston block 4 is sheathed on the outside of the casing 9 during the sliding process, the casing 9 can push the valve plate 6 open, and then the optical signal emitted by the distributed optical fiber temperature sensor 10 can reach Figure 1 The left side area of ​​the valve plate 6 in the embodiment is, in practice, typically the location of key components of a wind turbine generator set, such as the aforementioned gear or shaft, or even rotating components such as the motor's rotor. Simultaneously, in this embodiment, a driving element is also required at the end of the gear or shaft. This driving element can push the piston block 4 toward the casing 9 as the gear or shaft rotates. In other words, once the gear or shaft rotates, it triggers the movement of the piston block 4, thereby opening the valve plate 6 and allowing the optical signal of the distributed optical fiber temperature sensor 10 to illuminate the corresponding component, thereby performing temperature monitoring on the component and the area.

[0028] To be more specific, the driving element is a magnet (not shown in the figure), the piston block 4 has viscomagnetic properties and can be pushed by the magnet, and the remaining components can be made of plastic materials or non-magnetic 316L stainless steel, such as a very small magnet. In practice, a counterweight block should be symmetrically provided on the other side of the wind turbine component with the embedded magnet to avoid affecting the dynamic balance performance during rotation. In the above implementation means, because the distributed optical fiber temperature sensor 10 has good resistance to electromagnetic interference, the provision of a magnet such as a magnet will not affect the temperature detection performance of the sensor. Specifically, the magnet can be fixed on the end face of the gear or the end face of the rotating shaft, so that it moves in a circular motion along with the rotation of these components. Moreover, since the seat tube 1 is arranged parallel to the gear shaft or the rotating shaft of the gear, the magnet can intermittently face the open end of the seat tube 1 as the gear or the rotating shaft rotates, and then push the piston block 4 toward one end of the casing 9 through the repulsive force on the piston block 4, thereby opening the valve plate 6 and allowing the optical signal of the distributed optical fiber temperature sensor 10 to illuminate the surface or vicinity of the key components of the generator. When encountering a gear or shaft of a high-speed rotating shaft, the valve plate 6 will remain in the open state, and the distributed optical fiber temperature sensor 10 will always maintain temperature monitoring of the key component area, while the slow-rotating components will intermittently detect the corresponding area to meet the need for continuous monitoring. Because, as a key component, although it is a main component, its own speed is relatively low and heat generation is less. Therefore, intermittent monitoring can be adopted to streamline equipment and save power consumption.

[0029] In addition to the above driving methods, it is also possible to drive the system by using the wind force generated by the rotation of some rotating elements. For example, based on the above embodiment, Figure 1-Figure 2 and Figure 5 On the inner wall of one section of the tube hole for axial movement of the piston block 4 in the seat tube 1, there are several annular arrays of strip grooves 5, which make this section have a structure similar to a spline groove, and a vent (not shown in the figure) is provided at the bottom of the strip groove 5. The vent mainly connects the tube hole and the outside to allow the airflow in the tube hole to gush out, and the length direction of the strip groove 5 is parallel to the axial direction of the tube hole, so that when the piston block 4 slides onto the casing 9, it can be completely located in one section of the tube hole. In this way, when the airflow in the tube hole pushes the piston block 4 to move axially, once it completely enters this section of the tube hole, the airflow can flow out to the outside through the strip groove 5 and the vent due to the presence of the above-mentioned strip groove 5, thereby avoiding the accumulation of airflow in the seat tube 1 and untimely ventilation, which leads to a large temperature difference with the outside due to the accumulation of airflow during detection, and an increase in monitoring error.

[0030] In addition, in this embodiment, in order to ensure that the two mechanisms of driving the piston block 4 by the airflow generated by the rotation of certain rotating elements of the generator and the magnetic repulsive force of the magnet drive the piston block 4, one of them is adaptively selected according to the specific element characteristics of the generator. In this embodiment, Figure 2 As shown, the outer wall of the casing 9 is threadedly fixed with the aforementioned positioning screw 11, when the positioning screw 11 now contacts the end face of the piston block 4, the casing 9 pushes the valve plate 6 to the position where the circular sliding hole 8 ports are fully exposed, and when the positioning screw 11 is rotated and its position on the casing 9 is changed, it can be achieved that when the valve plate 6 is opened, whether the piston block 4 is completely located in one section of the above-mentioned pore, if it is located, then magnetic drive or air flow drive is taken into account, if it is not completely located in one section of the pore, then the air flow cannot enter the pore behind the piston, and just cannot flow out from the above-mentioned vent hole, and cannot be ventilated, so the air flow drive mechanism is not used. The present embodiment is mainly selected based on the characteristics of the corresponding components of the wind turbine, and the purpose is to improve adaptability and a wider and more reliable range of application.

[0031] In the above embodiment, as an implementation structure, Figure 1-Figure 3 and Figure 5 The valve plate 6 is suspended at the port of the circular sliding hole 8. One side of the valve plate 6 is hinged to the outside of one side of the port of the circular sliding hole 8 in the form of a damping hinge through a torsion spring (not shown in the figure), and the port is completely covered, so that the port can be better normally closed in the assembled state. When used on a wind turbine, once the generator is started due to strong wind power, the port automatically opens, and the distributed optical fiber temperature sensor 10 normally detects the temperature of the target component and its vicinity.

[0032] like Figure 1-Figure 3 and Figure 5 In this embodiment, the inner wall of the inner cylinder 2 facing the piston block 4 has a sinking platform, and the sinking platform is connected to the aforementioned tension spring 3 coaxially arranged in the seat tube 1, and the piston block 4 has an inner lining cylinder 7 integrally formed at the end facing the inner cylinder 2. The outer wall of the inner lining cylinder 7 is in axial sliding contact with the inner wall of the inner cylinder 2, guiding the movement of the tension spring 3, and collecting the airflow more concentratedly and stably, which is conducive to driving the piston block 4 to move with the help of the wind force formed by a small amount of airflow. Of course, during manufacturing, the smaller the mass of the piston block 4 and the stiffness coefficient of the tension spring 3, the better. If necessary, the interior of the piston block 4 has a hollow cylindrical structure, and in the initial state, the end face of the piston block 4 is set close to the end face of the inner cylinder 2.

[0033] In order to adjust the external driving force required for the movement of the piston block 4, such as Figure 2-Figure 3 , a coaxial device is provided at the sinking platform. Figure 4The connecting ring 12 shown, that is, the connecting ring 12 is located at the sink, one end of the connecting ring 12 is connected to one end of the tension spring 3, and the other end is rotatably connected to the adjusting screw 13 installed in the wall of the inner tube 2 in a threaded manner. During use, when the adjusting screw 13 is manually rotated, the connecting ring 12 can be moved linearly above the step surface of the sink. When the adjusting screw 13 is screwed outward, the tension spring 3 is stretched. Then, to push the piston block 4 to move, a larger external driving force is required, such as a larger repulsive force or a larger airflow generated by a larger component at a higher speed. On the contrary, the adjusting screw 13 is screwed in to almost completely release the tension spring 3. In this way, the tension spring 3, which is a lightweight spring, can be pushed toward one end of the protective tube 9 under a very small thrust, thereby causing the valve plate 6 to open automatically. More specifically, as Figure 3 The end of the adjusting screw 13 has a T-shaped bolt portion, which is rotatably connected to the connecting hole in the end face of the connecting ring 12. The longitudinal section of the connecting hole is T-shaped, so that when the adjusting screw 13 rotates, it can both push and pull the connecting ring 12.

[0034] As another example, Figure 5 A rectangular slider 14 is fixed on the outer cylindrical surface of the piston block 4, and the rectangular sliding hole is conductive. A sliding groove for the rectangular sliding hole to slide linearly is provided on the inner wall of the seat tube 1. A conductive column 15 is embedded in the bottom of the groove along its length direction. The conductive column 15 is conductive. The conductive column 15 and the rectangular slider 14 are respectively connected to the end of the corresponding wire (not shown in the figure). Each wire is passed through the interior of the corresponding component. When the piston block 4 is in the initial position, the rectangular sliding hole does not contact the conductive column 15, that is, the corresponding wire is not connected. When the piston block 4 moves toward one end of the casing 9, the rectangular sliding hole maintains sliding contact with the conductive column 15, so that the corresponding wire is connected, and then a control circuit is turned on. This control circuit controls the switch of the distributed optical fiber temperature sensor 10. In this way, once the wind turbine starts to generate electricity, the distributed optical fiber temperature sensor 10 is officially started for real-time detection.

[0035] In all the above embodiments, the mounting base can be fixed around the corresponding components in the wind power equipment with the help of some rods such as connecting rods, thereby realizing the rapid installation of the distributed optical fiber temperature sensor 10. Based on the characteristics of its optical signal detection principle, the direction of the pipe opening of the seat tube 1 of the mounting base can be adaptively selected. This embodiment does not impose specific limitations. Moreover, because different wind power equipment has different installation methods and internal structures, the present invention cannot limit the specific installation location of the mounting base. However, those skilled in the art can adaptively perform fixed installation according to the specific installation environment and internal structure of the wind power equipment.

[0036] It should be explained here that, in this specification, terms such as first and second are only used to distinguish one feature from another, and do not mean that there is a certain relationship or order between these technical features. The terms "include" and "comprise" refer to the inclusion of one or certain technical means or features, specifically meaning that there are other existing or non-existing technical features that have not been included. The discussion in the above embodiments is only a referential example for the present utility model, and is by no means the only restrictive constraint feature. Those skilled in the art should understand that, without departing from the technical content recorded in all claims of this application, some simple replacements and modifications can be made, thereby changing or becoming equivalent to other specific embodiments and application scenarios. However, no matter how the adaptive changes are made, these embodiments will inevitably fall within the scope of protection of the present utility model.

Claims

1. A wind power equipment temperature monitoring device based on distributed sensing, comprising a plurality of distributed optical fiber temperature sensors (10), characterized in that: A distributed optical fiber temperature sensor (10) is provided at a gear meshing position of a gearbox of a wind power equipment, a generator shaft or a rotor, respectively, through a mounting base. The mounting base includes a base tube (1), an inner tube (2) located inside the base tube (1), a tension spring (3), a piston block (4), a valve plate (6), and a protective tube (9). The inner tube (2) is coaxially fixed in the open end of the seat tube (1), the end of the inner tube (2) is connected to the end face of one end of the piston block (4) through a tension spring (3), the piston block (4) axially has a circular sliding hole (8) hingedly blocked at the end of a valve plate (6), and the piston block (4) is installed in the seat tube (1) in a sliding manner, and the other end of the piston block (4) is provided with the protective tube (9) fixed at the closed end of the inner tube (2), and the protective tube (9) is provided with the distributed optical fiber temperature sensor (10) coaxial with the piston block (4), and when the piston block (4) is sheathed on the outside of the protective tube (9) during the sliding process, the protective tube (9) pushes the valve plate (6) open; a driving element is provided at the end of the gear or the rotating shaft, and the driving element can push the piston block (4) to move toward the protective tube (9) when the gear or the rotating shaft rotates.

2. The wind power equipment temperature monitoring device based on distributed sensing according to claim 1, characterized in that: The driving element is a magnet, which is fixed on the end face of the gear or the end face of the rotating shaft. The seat tube (1) is arranged parallel to the gear shaft of the gear or the rotating shaft, and when the magnet rotates with the gear or the rotating shaft, it can push the piston block (4) toward one end of the casing (9) by exerting a repulsive force on the piston block (4) when facing the open end of the seat tube (1).

3. The wind power equipment temperature monitoring device based on distributed sensing according to claim 2, characterized in that: On the inner wall of one section of the tube hole for axial movement of the piston block (4) in the seat tube (1), there are a plurality of annular array strip grooves (5), the groove bottoms of the strip grooves (5) have vent holes, and the length direction of the strip grooves (5) is parallel to the axial direction of the tube hole, so that when the piston block (4) slides onto the casing (9), it is completely located in one section of the tube hole.

4. A wind power equipment temperature monitoring device based on distributed sensing according to claim 2 or 3, characterized in that: The outer wall of the protective tube (9) is fixed with a positioning screw sleeve (11) in a threaded manner. When the positioning screw sleeve (11) contacts the end surface of the piston block (4), the protective tube (9) pushes the valve plate (6) to a position where the end of the circular sliding hole (8) is completely exposed.

5. The wind power equipment temperature monitoring device based on distributed sensing according to claim 4, characterized in that: The valve plate (6) is suspended at the port of the circular sliding hole (8), and one side of the valve plate (6) is hinged to the outside of one side of the port of the circular sliding hole (8) through a torsion spring damping, and completely covers the port.

6. The wind power equipment temperature monitoring device based on distributed sensing according to claim 1, characterized in that: The inner wall of the inner cylinder (2) at one end facing the piston block (4) has a sink, and the sink is connected to a tension spring (3) coaxially arranged in the seat tube (1); the piston block (4) has an inner lining cylinder (7) integrally at one end facing the inner cylinder (2), and the outer wall of the inner lining cylinder (7) is in axial sliding contact with the inner wall of the inner cylinder (2).

7. The wind power equipment temperature monitoring device based on distributed sensing according to claim 6, characterized in that: A connecting ring (12) is coaxially provided at the sinking platform, one end of the connecting ring (12) is connected to one end of the tension spring (3), and the other end is rotatably connected to an adjusting screw (13) installed in the wall of the inner cylinder (2) in a threaded manner, so that when the adjusting screw (13) is rotated, the connecting ring (12) can be moved linearly above the step surface of the sinking platform.

8. The wind power equipment temperature monitoring device based on distributed sensing according to claim 7, characterized in that: The end of the adjusting screw (13) has a T-shaped bolt portion, and the T-shaped bolt portion is rotatably connected to the connecting hole in the end surface of the connecting ring (12), and the longitudinal section of the connecting hole is T-shaped.

9. The wind power equipment temperature monitoring device based on distributed sensing according to claim 1, characterized in that: A rectangular sliding block (14) is fixed on the outer cylindrical surface of the piston block (4), and a sliding groove for the rectangular sliding hole to slide linearly is provided on the inner wall of the seat tube (1). A conductive column (15) is embedded in the bottom of the sliding groove along its length direction. When the piston block (4) is in an initial position, the rectangular sliding hole does not contact the conductive column (15). When the piston block (4) moves toward one end of the casing (9), the rectangular sliding hole maintains sliding contact with the conductive column (15) and conducts a control circuit. The control circuit controls the switch of the distributed optical fiber temperature sensor (10).

10. The wind power equipment temperature monitoring device based on distributed sensing according to claim 1, characterized in that: The piston block (4) has a hollow cylindrical structure inside, and in an initial state, the end surface of the piston block (4) is arranged in close contact with the end surface of the inner cylinder (2).

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