Monitoring system for variable-pitch super capacitor of wind turbine generator and wind turbine generator

Abstract

The utility model provides a monitoring system for a variable-pitch super capacitor of a wind turbine generator set and the wind turbine generator set, and belongs to the technical field of wind turbine generator set monitoring, the monitoring system comprises a diversion member, the middle of the diversion member is provided with an accommodating cavity for accommodating the variable-pitch super capacitor in a penetrating manner, and the inner wall of the accommodating cavity is in contact with the outer wall of the variable-pitch super capacitor; a plurality of flow guide channels and a plurality of temperature measuring holes are formed in the flow guide piece at intervals in a penetrating manner, and the flow guide channels and the temperature measuring holes are not communicated with each other; the fluid driving mechanism is arranged on the flow guide part, connected with the outlet end of each flow guide channel and used for generating driving force, so that fluid flows along the flow guide channels, and cooling is achieved; and the at least one temperature sensor is arranged in the corresponding temperature measuring hole through a mounting mechanism, is in contact with the outer wall of the variable-pitch super capacitor and is used for measuring the temperature value of the variable-pitch super capacitor. According to the utility model, the temperature value of the variable-pitch super capacitor can be detected in real time, and the fluid can be driven to flow along the diversion channel through the fluid driving mechanism, so that the cooling of the variable-pitch super capacitor is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine monitoring, and particularly to a monitoring system for a pitch supercapacitor of a wind turbine and a wind turbine. Background Art

[0002] With the increasing development of wind energy resources, wind turbines are playing an increasingly important role in the power system. However, due to the harsh environment where wind turbines are located, various faults may occur during operation, affecting the normal operation of the units. Among them, the pitch system is one of the key components of wind turbines, and its performance directly affects the power generation efficiency and safety of wind turbines. As an important part of the pitch system, the health state of the supercapacitor is crucial to the performance of the entire pitch system. Therefore, it is of great significance to monitor the health state of the supercapacitor of the pitch system in real time and accurately and to perform operation under special circumstances.

[0003] In the prior art, for the monitoring of supercapacitors, the temperature is detected by pasting a temperature sensor on the outer surface of the supercapacitor. There are problems such as poor contact and large measurement error. In addition, for the increase in the temperature of the supercapacitor, effective cooling cannot be achieved, and there are potential safety hazards. Summary of the Utility Model

[0004] The purpose of the embodiments of the utility model is to provide a monitoring system for a pitch supercapacitor of a wind turbine and a wind turbine, so as to at least solve the problems of poor contact and large measurement error in temperature detection by pasting a temperature sensor on the outer surface of the supercapacitor, and in addition, for the increase in the temperature of the supercapacitor, effective cooling cannot be achieved, and there are potential safety hazards.

[0005] To achieve the above purpose, the first aspect of the utility model provides a monitoring system for a pitch supercapacitor of a wind turbine, and the system includes:

[0006] A flow guide member, a receiving cavity is penetrated through the middle of the flow guide member, the receiving cavity is used for receiving the pitch supercapacitor, the inner wall of the receiving cavity is in contact with the outer wall of the pitch supercapacitor, a plurality of flow guide channels and a plurality of temperature measurement holes are arranged on the flow guide member at intervals and penetrate through the flow guide member, and the flow guide channels and the temperature measurement holes are not communicated with each other;

[0007] A fluid driving mechanism, which is arranged on the flow guide member and is connected to the outlet end of each flow guide channel, is used for generating a driving force to make the fluid flow along the flow guide channel to achieve cooling;

[0008] At least one temperature sensor, which is arranged in the corresponding temperature measurement hole through a mounting mechanism and is in contact with the outer wall of the pitch supercapacitor, is used for measuring the temperature value of the pitch supercapacitor.

[0009] Optionally, an air inlet groove is formed at the bottom end of the flow guide member, and the inlet end of each flow guide channel is connected to the air inlet groove.

[0010] Optionally, a refrigerating sheet is arranged on the outer wall of the air inlet groove for cooling the fluid entering the flow guide channel.

[0011] Optionally, the flow guide channel is a multi-segment arc-shaped flow guide channel connected in sequence at the head and tail.

[0012] Optionally, the fluid driving mechanism is a negative pressure fan.

[0013] Optionally, internal threads are formed on the inner wall of the temperature measuring hole; the installation mechanism includes:

[0014] An installation sleeve, the outer surface of the installation sleeve is provided with external threads, and the external threads on the installation sleeve are matched with the internal threads on the temperature measuring hole, and the installation sleeve can rotate on the temperature measuring hole;

[0015] A turntable, rotatably arranged in the installation sleeve;

[0016] A spring, arranged on one surface of the turntable, the other end of the spring is connected to the temperature sensor, and the temperature sensor can slide in the installation sleeve and can rotate with the turntable.

[0017] Optionally, a wire passing hole is formed on the turntable, and the data cable of the temperature sensor passes through the wire passing hole.

[0018] Optionally, the system further includes:

[0019] A voltage sensor, connected to the pitch super capacitor, for measuring the voltage value of the pitch super capacitor.

[0020] Optionally, the system further includes:

[0021] A display device, connected to the temperature sensor and the voltage sensor, for displaying the temperature value and the voltage value in real time.

[0022] The second aspect of the present invention provides a wind turbine, including;

[0023] A pitch system;

[0024] The monitoring system for the pitch super capacitor of the above-mentioned wind turbine.

[0025] The structure of the present invention is simple, and it can detect the temperature value of the pitch super capacitor in real time through the temperature sensor, and can drive the fluid to flow along the flow guide channel through the fluid driving mechanism to realize the cooling of the pitch super capacitor, providing a hardware basis for realizing the automatic control of the cooling of the pitch super capacitor.

[0026] Other features and advantages of the embodiments of the present utility model will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0028] Figure 1 is a front view of the first monitoring system for the pitch supercapacitor of a wind turbine provided by the present utility model;

[0029] Figure 2 is a front view of the second monitoring system for the pitch supercapacitor of a wind turbine provided by the present utility model;

[0030] Figure 3 is a bottom view of the monitoring system for the pitch supercapacitor of a wind turbine provided by the present utility model;

[0031] Figure 4 is a schematic structural diagram of the mounting mechanism provided by the present utility model;

[0032] Figure 5 is a system block diagram of the monitoring system for the pitch supercapacitor of a wind turbine provided by the present utility model.

[0033] DESCRIPTION OF THE REFERENCE NUMERALS

[0034] 1 - Flow guide member; 11 - Flow guide channel; 12 - Temperature measurement hole;

[0035] 13 - Air intake groove; 2 - Pitch supercapacitor; 3 - Fluid drive mechanism;

[0036] 31 - Flow guide pipe; 4 - Temperature sensor; 5 - Mounting mechanism;

[0037] 51 - Mounting sleeve; 52 - Turntable; 521 - Wire passing hole;

[0038] 53 - Spring; 6 - Refrigeration sheet; 7 - Voltage sensor;

[0039] 8 - Display device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following describes in detail the specific embodiments of the present utility model with reference to the drawings. It should be understood that the specific embodiments described herein are only for explaining and understanding the present utility model, and do not limit the present utility model.

[0041] In the embodiments of the present utility model, unless otherwise stated, the orientation words such as "upper", "lower", "left", and "right" generally refer to the orientation or positional relationship based on the figures, or the orientation or positional relationship in which the products of the present utility model are usually placed during use.

[0042] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0043] The terms "parallel", "perpendicular", etc. do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", and does not mean that the structure must be completely parallel, but can be slightly inclined.

[0044] The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal, vertical or hanging, 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.

[0045] In addition, terms such as "substantially" and "basically" are intended to indicate that the relevant content does not require absolute precision, but there can be a certain deviation. For example: "substantially equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" during actual production and operation processes, there is generally a certain deviation. Therefore, in addition to absolute equality, "substantially equal" also includes the above-mentioned situations with a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "substantially" and "basically" have similar meanings to the above.

[0046] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0047] Figure 1 is the front view of the first monitoring system for the pitch supercapacitor of the wind turbine provided by the present utility model; Figure 2 is the front view of the second monitoring system for the pitch supercapacitor of the wind turbine provided by the present utility model; Figure 3 is the bottom view of the monitoring system for the pitch supercapacitor of the wind turbine provided by the present utility model; Figure 4 is the structural schematic diagram of the installation mechanism provided by the present utility model; Figure 5It is the system block diagram of the monitoring system for the pitch supercapacitor of a wind turbine provided by the present utility model.

[0048] As Figures 1-3 shown, this embodiment provides a monitoring system for the pitch supercapacitor of a wind turbine. The system includes:

[0049] A flow guide member 1. A receiving cavity is provided through the middle of the flow guide member 1. The receiving cavity is used to receive the pitch supercapacitor 2. The inner wall of the receiving cavity is in contact with the outer wall of the pitch supercapacitor 2. A plurality of flow guide channels 11 and a plurality of temperature measurement holes 12 are provided at intervals and penetrate through the flow guide member 1. The flow guide channels 11 and the temperature measurement holes 12 are not in communication with each other;

[0050] A fluid driving mechanism 3 is provided on the flow guide member 1 and is connected to the outlet end of each flow guide channel 11 for generating a driving force to make the fluid flow along the flow guide channel 11 to achieve cooling;

[0051] At least one temperature sensor 4 is arranged in the corresponding temperature measurement hole 12 through a mounting mechanism 5 and is in contact with the outer wall of the pitch supercapacitor 2 for measuring the temperature value of the pitch supercapacitor 2.

[0052] Specifically, in this embodiment, in the case of power failure, the wind turbine usually needs to use the pitch supercapacitor to make the driving power of the impeller meet the state that the motor can bear, and set its appropriate pitch angle under different wind speed conditions to make the working state of the generator in the optimal state. Since the pitch supercapacitor is continuously in a discharged state, its own temperature will gradually increase. Therefore, the temperature sensor 4 is set to collect the temperature. However, in order to avoid errors in the data caused by setting only one temperature sensor 4 for temperature collection and ensure that more temperature data is collected, a plurality of temperature measurement holes 12 are provided on the flow guide member 1, and each temperature sensor 4 is installed in the temperature measurement hole 12 through a mounting mechanism 5; in addition, in order to cool the pitch supercapacitor 2 when the temperature of the pitch supercapacitor 2 is relatively high, a plurality of flow guide channels 11 are provided on the flow guide member 1. When the temperature reaches the set value, the fluid driving mechanism 3 generates a driving force to make the fluid flow along the flow guide channel, and the heat is absorbed by the fast-flowing fluid, thereby cooling the temperature of the pitch supercapacitor 2, greatly reducing the potential safety hazard and realizing the protection of the pitch supercapacitor 2. The structure of the flow guide member 1 can be set as a cylindrical structure or a square structure.

[0053] More specifically, as Figure 2 shown, the fluid driving mechanism 3 is connected to the outlet end of the flow guide channel 11 through a flow guide pipe 31.

[0054] Further, as Figure 3As shown, an air intake groove 13 is formed at the bottom end of the flow guide member 1, and the inlet end of each flow guide channel 11 is connected to the air intake groove 13.

[0055] Specifically, in this embodiment, an air intake groove 13 is formed at the bottom end of the flow guide member 1, and the inlet end of each flow guide channel 11 is connected to the air intake groove 13, so as to realize the uniform supply of fluid.

[0056] Furthermore, as Figures 1-3 shown, a refrigerating sheet 6 is arranged on the outer wall of the air intake groove 13 for cooling the fluid entering the flow guide channel 11.

[0057] Specifically, in this embodiment, when the temperature of the pitch super capacitor 2 is relatively high, at this time, the fluid at normal temperature cannot achieve rapid cooling. Therefore, a refrigerating sheet 6 is arranged on the outer wall of the air intake groove 13, and the temperature of the fluid is reduced by the refrigeration of the refrigerating sheet 6 to achieve rapid cooling.

[0058] Furthermore, as Figures 1-2 shown, the flow guide channel 11 is a multi-segment arc-shaped flow guide channel connected in sequence at the head and tail.

[0059] Specifically, in this embodiment, the flow guide channel 11 is arranged as a multi-segment arc-shaped flow guide channel connected in sequence at the head and tail, which can greatly increase the moving path of the fluid, so as to achieve rapid cooling and improve the cooling effect.

[0060] Furthermore, the fluid driving mechanism 3 is a negative pressure fan.

[0061] Specifically, in this embodiment, the negative pressure fan is connected to the outlet end of the flow guide channel 11 through a pipeline. When the negative pressure fan works, it generates a driving force to convey the fluid outward.

[0062] Furthermore, as Figure 4 shown, internal threads are formed on the inner wall of the temperature measuring hole 12; the mounting mechanism 5 includes:

[0063] A mounting sleeve 51, the outer surface of the mounting sleeve 51 is provided with external threads, and the external threads on the mounting sleeve 51 are matched with the internal threads on the temperature measuring hole 12, and the mounting sleeve 51 can rotate on the temperature measuring hole 12;

[0064] A turntable 52, rotatably arranged in the mounting sleeve 51;

[0065] A spring 53, arranged on one surface of the turntable 52, the other end of the spring 53 is connected to the temperature sensor 4, and the temperature sensor 4 can slide in the mounting sleeve 51 and can rotate with the turntable 52.

[0066] Specifically, in this embodiment, when collecting the temperature of the pitch supercapacitor 2, since it is fixed by pasting in part, but as the operation time increases, the contact part will become unstable, resulting in a large measurement error of the data. Therefore, in this embodiment, an installation sleeve 51 with a hollow interior is provided, and the interior of the installation sleeve 51 is a hollow structure. After the installation sleeve 51 is installed on the temperature measurement hole 12, due to the threaded connection, when the installation sleeve 51 is rotated, the end of the installation sleeve 51 can be made to approach or move away from the outer wall of the pitch supercapacitor 2 (i.e., the temperature sensor 4 approaches or moves away from the outer wall of the pitch supercapacitor 2). At the same time, in order to ensure that the temperature sensor 4 can be in close contact with the outer wall of the pitch supercapacitor 2, a turntable 52 is provided inside the installation sleeve 51. The turntable 52 is rotatably arranged in the installation sleeve 51 through a bearing or a card slot, and a spring 53 is arranged on one surface of the turntable 52. The spring 53 has the functions of compression and elongation, so as to drive the temperature sensor 4 to expand and contract. When the installation sleeve 51 is in place, the spring 53 is compressed to generate an elastic force, so that the temperature sensor 4 is closely attached to the outer wall of the pitch supercapacitor 2, thereby effectively reducing data errors and ensuring the accuracy of the measurement results.

[0067] Further, as Figure 4 shown, a wire passing hole 521 is provided on the turntable 52, and the data cable of the temperature sensor 4 passes through the wire passing hole 521.

[0068] Specifically, since the installation sleeve 51 adopts a rotatable installation method, there is a rotational movement mode. The temperature sensor 4 is arranged in the installation sleeve 51 and will rotate accordingly. When using a data cable for data transmission, the cable will be entangled. Therefore, the turntable 52 is rotatably arranged, and a wire passing hole 521 is provided on the turntable 52. The data cable of the temperature sensor 4 passes through the wire passing hole 521, so that when the installation sleeve 51 rotates, the internal data cable will not be entangled.

[0069] Further, as Figure 5 shown, the system further includes:

[0070] A voltage sensor 7, connected to the pitch supercapacitor 2, for measuring the voltage value of the pitch supercapacitor 2.

[0071] Specifically, in this embodiment, the voltage value is also measured by the voltage sensor 7 to more comprehensively understand its state and improve safety.

[0072] Further, as Figure 5 shown, the system further includes:

[0073] A display device 8, connected to the temperature sensor 4 and the voltage sensor 7, for real-time display of the temperature value and the voltage value.

[0074] Specifically, in this embodiment, the provided display device 8 can display the temperature value and voltage value in real time, facilitating more intuitive acquisition of data.

[0075] In a second aspect, the present utility model provides a wind turbine, including:

[0076] A pitch system;

[0077] The above-mentioned monitoring system for the pitch supercapacitor of the wind turbine.

[0078] Among them, the remaining structures of the wind turbine are prior arts known to those skilled in the art, and thus will not be elaborated herein; the pitch supercapacitor in the wind turbine is usually of a square structure.

[0079] Those skilled in the art can understand that all or part of the steps in the methods for implementing the above embodiments can be completed by instructing relevant hardware through a program. This program is stored in a storage medium and includes several instructions for causing a single-chip microcomputer, a chip, or a processor to execute all or part of the steps of the methods described in various embodiments of the present utility model. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., which can store program codes.

[0080] The optional embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present utility model are not limited to the specific details in the above embodiments. Within the technical concept scope of the embodiments of the present utility model, various simple modifications can be made to the technical solutions of the embodiments of the present utility model, and these simple modifications all fall within the protection scope of the embodiments of the present utility model. Additionally, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the embodiments of the present utility model will not elaborate on various possible combination manners separately.

[0081] Furthermore, any combination can be made among various different embodiments of the present utility model as long as it does not violate the idea of the embodiments of the present utility model, and it should also be regarded as the content disclosed by the embodiments of the present utility model.

Claims

1. A monitoring system for variable pitch supercapacitors of wind turbines, characterized in that: The system comprises: A flow guide member (1), wherein a receiving cavity is provided through the middle of the flow guide member (1), the receiving cavity is used to receive the variable pitch super capacitor (2), the inner wall of the receiving cavity is in contact with the outer wall of the variable pitch super capacitor (2), a plurality of flow guide channels (11) and a plurality of temperature measuring holes (12) are provided at intervals and through the flow guide member (1), and the flow guide channels (11) and the temperature measuring holes (12) are not connected to each other; A fluid driving mechanism (3) is arranged on the flow guide member (1) and connected to the outlet end of each flow guide channel (11), and is used to generate a driving force to make the fluid flow along the flow guide channel (11) to achieve cooling; At least one temperature sensor (4) is arranged in the corresponding temperature measuring hole (12) through a mounting mechanism (5), is in contact with the outer wall of the variable pitch super capacitor (2), and is used to measure the temperature value of the variable pitch super capacitor (2).

2. The wind turbine pitch supercapacitor monitoring system according to claim 1 is characterized in that: An air inlet groove (13) is provided at the bottom end of the flow guide member (1), and the inlet end of each flow guide channel (11) is connected to the air inlet groove (13).

3. The wind turbine pitch supercapacitor monitoring system according to claim 2 is characterized in that: A cooling fin (6) is provided on the outer wall of the air inlet groove (13) for cooling the fluid entering the flow guide channel (11).

4. The wind turbine pitch supercapacitor monitoring system according to claim 1, characterized in that: The guide channel (11) is a plurality of arc-shaped guide channels which are connected in sequence.

5. The wind turbine pitch supercapacitor monitoring system according to claim 1, characterized in that: The fluid driving mechanism (3) is a negative pressure fan.

6. The wind turbine pitch supercapacitor monitoring system according to claim 1, characterized in that: An internal thread is provided on the inner wall of the temperature measuring hole (12); the mounting mechanism (5) comprises: A mounting sleeve (51), wherein an outer surface of the mounting sleeve (51) is provided with an external thread, the external thread on the mounting sleeve (51) matches the internal thread on the temperature measuring hole (12), and the mounting sleeve (51) is rotatable on the temperature measuring hole (12); A rotating disk (52) rotatably disposed in the mounting sleeve (51); A spring (53) is arranged on one surface of the rotating disk (52); the other end of the spring (53) is connected to a temperature sensor (4); the temperature sensor (4) is capable of sliding in the mounting sleeve (51) and rotating with the rotating disk (52).

7. The wind turbine pitch supercapacitor monitoring system according to claim 6, characterized in that: The rotating disk (52) is provided with a wire hole (521), and the data cable of the temperature sensor (4) passes through the wire hole (521).

8. The wind turbine pitch supercapacitor monitoring system according to claim 1, characterized in that: The system further comprises: A voltage sensor (7) is connected to the variable pitch super capacitor (2) and is used to measure the voltage value of the variable pitch super capacitor (2).

9. The wind turbine pitch supercapacitor monitoring system according to claim 8, characterized in that: The system further comprises: A display device (8) is connected to the temperature sensor (4) and the voltage sensor (7) and is used to display the temperature value and the voltage value in real time.

10. A wind turbine generator set, characterized in that: include; Pitch system; A monitoring system for a variable pitch supercapacitor of a wind turbine set according to any one of claims 1 to 9.

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