Floating type air-gas unit blade air-heat deicing device

Abstract

The utility model discloses a blade gas heat deicing device of a floating type wind-gas unit. The blade gas heat deicing device comprises a temperature sensor, a cabin humidity sensor, an air blower, a heat preservation air blowing pipeline, a blade tip front edge heat insulation plate and a start-stop control system. According to the device, a program for automatically judging the critical icing state of the blade is utilized, and in the early stage of icing of the blade, the air blower device is started to heat the front edge position of the blade, so that the icing condition of the blade is restrained. And the problems of unit performance reduction, high operation and maintenance cost, high construction risk and the like caused by freezing of blades in deep sea areas are effectively relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and in particular relates to a floating type wind-air unit blade air-heat deicing device. Background Art

[0002] With the exhaustion of onshore and offshore wind resources, the wind industry has already moved to deep sea areas. With the continuous updating and advancement of technology, floating wind turbines have come into being. Their advantages such as low installation difficulty, wide adaptability to sea areas, and strong technical feasibility make them the only choice for the development of deep sea wind turbines. However, since the unit is located in the sea area about 100 kilometers away from the coastline, the marine environment is complex, the climate conditions are changeable, and there is heavy wet fog, which can easily cause the blades of the unit to freeze, especially at the leading edge of the blade tip. The blade tip belongs to the aerodynamic performance section and is also a structural weak area. Ice will cause the blade airfoil shape to change, which will affect the aerodynamic performance of the blade and reduce the output power of the unit. What is more serious is that once the ice is severe to a certain extent, the tip of the blade will be overloaded and the blade will be at risk of breaking.

[0003] Most of the existing deicing methods use manual cleaning or drone removal technologies. Considering the difficulty of personnel going to deep sea areas, the short operation and maintenance window, the high difficulty of construction and the complex sea conditions, the existing deicing methods are no longer applicable. Therefore, in order to solve the problem of floating unit blade icing, the development of an automatic identification of icing status and automatic deicing device is of great significance to the high-efficiency operation of floating wind turbines and to ensure overall safety. Utility Model Content

[0004] The utility model aims to provide a floating type wind turbine blade gas heat deicing device to solve the problem of wind turbine blade deicing difficulty in deep sea areas.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A floating type air-air unit blade air-heat deicing device, comprising a cabin humidity sensor, a temperature sensor, a control start-stop system, a blower and an air blast duct;

[0007] A cabin humidity sensor is arranged in the cabin, a temperature sensor is arranged at the leading edge of the blade, a blower and an air duct are arranged at the leading edge of the blade, the output ends of the cabin humidity sensor and the temperature sensor are connected to the input end of the start-stop control system, the output end of the start-stop control system is connected to the control end of the blower, and the outlet of the blower is connected to the air duct.

[0008] A further improvement of the utility model is that the outlet of the blast duct is arranged at the leading edge of the blade through a blade tip leading edge insulation plate.

[0009] A further improvement of the utility model is that the blade tip leading edge insulation plate adopts insulation material to connect the blade leading edge and the blade leading edge web.

[0010] A further improvement of the utility model is that the output ends of the cabin humidity sensor and the temperature sensor are connected to the input end of the start-stop control system through a data transmission line.

[0011] A further improvement of the utility model is that the temperature sensor is used to measure the wall temperature at the leading edge of the blade tip.

[0012] A further improvement of the utility model is that the cabin humidity sensor is used to measure the humidity of the area around the floating unit.

[0013] A further improvement of the utility model is that the start-stop control system is used to compare the acquired real-time humidity and temperature information with the built-in freezing critical value, and when it determines whether the freezing conditions are reached, outputs a command to the blower to make the blower work or standby.

[0014] A further improvement of the utility model is that the blower is used to transport the hot air to the front end section of the leading edge of the blade through the blast duct.

[0015] A further improvement of the utility model is that the blast duct is made of thermal insulation material.

[0016] A further improvement of the utility model is that the blades of the floating wind turbine generator set are divided into a blade leading edge, a blade trailing edge, a blade leading edge web and a blade trailing edge web.

[0017] Compared with the prior art, the utility model has at least the following beneficial technical effects:

[0018] In view of the fact that floating wind turbines are prone to ice formation in deep sea areas, and that after ice formation, the operation and maintenance window is short, it is difficult for personnel to arrive, and construction operations are difficult, the utility model provides a floating wind turbine blade gas-heat deicing device, which uses a cabin humidity sensor and a temperature sensor to measure humidity and temperature in real time, and based on the critical state conditions of wind farm ice formation in the past, has a built-in control start-stop system. In the early stage when the blades begin to freeze, the blades are heated by a blower to prevent the blades from freezing. Therefore, the utility model can effectively prevent blade ice formation; the gas-heat deicing device is used to reduce the unit operation and maintenance costs and reduce the risks brought by personnel construction; in addition, the device cost is low and the implementation difficulty is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The distribution diagram of the gas-heat deicing device on the blade is given;

[0020] Description of reference numerals:

[0021] 1. Floating wind turbine blades; 2. Blade leading edge; 3. Blade trailing edge; 4. Blade leading edge web; 5. Blade trailing edge web; 6. Blade tip leading edge insulation board; 7. Cabin humidity sensor; 8. Temperature sensor; 9. Control start and stop system; 10. Blower; 11. Blower duct; 12. Data transmission line. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] The accompanying drawings show various structural schematic diagrams of the embodiments disclosed in the utility model. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0030] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1As shown, the present embodiment provides a floating air-air unit blade gas-heat deicing device, which is used to solve the practical problem that blades in deep sea areas are prone to ice formation and deicing work is difficult to carry out, and is of great significance to reducing unit load, improving unit operating efficiency, and reducing operation and maintenance load. It includes a cabin humidity sensor 7, a temperature sensor 8, a control start-stop system 9, a blower 10, and an air duct 11; the cabin humidity sensor 7 is arranged in the cabin, the temperature sensor 8 is arranged on the leading edge 2 of the blade, the blower 10 and the air duct 11 are arranged on the leading edge 2 of the blade, the output ends of the cabin humidity sensor 7 and the temperature sensor 8 are both connected to the input end of the control start-stop system 9, the output end of the control start-stop system 9 is connected to the control end of the blower 10, and the outlet of the blower 10 is connected to the air duct 11.

[0033] Embodiment 2:

[0034] like Figure 1 As shown, the present embodiment provides a floating air-air unit blade air-heat deicing device, comprising a cabin humidity sensor 7, a temperature sensor 8, a start-stop control system 9, a blower 10 and an air duct 11; the cabin humidity sensor 7 is arranged in the cabin, the temperature sensor 8 is arranged at the leading edge 2 of the blade, the blower 10 and the air duct 11 are arranged at the leading edge 2 of the blade, the output ends of the cabin humidity sensor 7 and the temperature sensor 8 are connected to the input end of the start-stop control system 9 through a data transmission line 12, the output end of the start-stop control system 9 is connected to the control end of the blower 10, and the outlet of the blower 10 is connected to the air duct 11.

[0035] In this embodiment, the floating wind turbine blade 1 is divided into a blade leading edge 2 , a blade trailing edge 3 , a blade leading edge web 4 and a blade trailing edge web 5 .

[0036] In this embodiment, the outlet of the blast duct 11 is arranged at the blade leading edge 2 through the blade tip leading edge insulation plate 6. The blade tip leading edge insulation plate 6 uses insulation material to connect the blade leading edge and the blade leading edge web, thereby isolating the blade tip leading edge section into a closed area so that the temperature of the front and rear sections does not circulate. Only the assembly ports of the blast channel device 6 and the data transmission line 12 are reserved.

[0037] In this embodiment, the data transmission line 12 transmits the data measured by the temperature sensor 8 and the cabin humidity sensor 7 to the start-stop control system 9 in real time.

[0038] In this embodiment, the temperature sensor 8 is a device for measuring the wall temperature at the leading edge of the blade tip, and the cabin humidity sensor 7 is a device for measuring the humidity of the area surrounding the floating unit.

[0039] In this embodiment, the start-stop control system 9 compares the acquired real-time humidity and temperature information with the system's built-in freezing critical value to determine whether the freezing conditions are met, and then outputs a command to the blower 10 to make it work or standby.

[0040] In this embodiment, the blower 10 quickly delivers hot air of a certain temperature to the front end section of the blade leading edge 2 through the blower duct 11 to achieve a temperature increase effect.

[0041] In this embodiment, the blast duct 11 is a duct made of a thermal insulation material, such as foamed polyurethane, aerogel thermal insulation material, etc.

[0042] Embodiment 3:

[0043] like Figure 1 As shown, the floating type wind turbine blade deicing device provided in this embodiment includes the following steps when in operation:

[0044] Step 1: During the operation of the floating unit, the wall temperature of the blade tip and the humidity around the unit are monitored in real time, and the temperature is transmitted to the control start-stop system 9 through the temperature sensor 8, the humidity sensor 7 and the data transmission line 12;

[0045] Step 2: Control the built-in icing critical conditions of the start-stop system, and input the execution command to the blower 10 by determining the values ​​of temperature and humidity. The specific details are as follows:

[0046] When the temperature is less than 0℃ and the humidity around the cabin is greater than 85%, the unit reaches the critical state of icing, and a command to start the blower is given to start the blower;

[0047] When the temperature is greater than or equal to 0°C or the humidity around the cabin is less than 85%, the start-stop control system 9 determines that the blades will not freeze and gives a command not to start the blower. At this time, the blower 10 does not work;

[0048] Step 3: When the control start-stop system 9 gives a command to start the blower 10, the switch is turned on, and the blower passes 100°C hot air through the blower duct 11 at a flow rate of 80 km / h to the leading edge of the blade tip;

[0049] Step 4: Considering that the temperature of the hot air will rise immediately after entering the leading edge of the blade tip, causing the temperature measured by the temperature sensor 8 to be higher than the critical freezing temperature, which will in turn affect the judgment of the control start-stop system 9, the blower 10 is set to work continuously for thirty minutes after starting, and the control start-stop system 9 shall not intervene;

[0050] Step 5: The blower 10 automatically shuts down after working for thirty minutes. At the same time, the start-stop control system 9 starts working and continues to execute steps 1-4.

[0051] In this embodiment, by real-time monitoring of the temperature of the leading edge of the blade tip and the humidity around it, the critical icing state is used as the judgment condition to predict whether the blade will freeze. The heating device is executed at the initial stage of icing to avoid the blade from freezing, effectively alleviating a series of problems caused by blade icing.

[0052] The temperature and flow rate of the hot air output by the blower 10 in this embodiment can be adjusted according to the actual situation of the project, and the results obtained by the technicians through simulation shall prevail.

[0053] The tip leading edge insulation plate 6 in this embodiment is preferably installed during the manufacturing stage of the blade to avoid installation problems caused by the difficulty for processing personnel to enter the blade in the later stage.

[0054] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0055] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the utility model, and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A floating air-air unit blade gas heat deicing device, characterized in that: It includes a cabin humidity sensor (7), a temperature sensor (8), a start-stop control system (9), a blower (10), and a blower duct (11); A cabin humidity sensor (7) is arranged in the cabin, a temperature sensor (8) is arranged on the leading edge of the blade (2), a blower (10) and an air duct (11) are arranged on the leading edge of the blade (2), the output ends of the cabin humidity sensor (7) and the temperature sensor (8) are both connected to the input end of the start-stop control system (9), the output end of the start-stop control system (9) is connected to the control end of the blower (10), and the outlet of the blower (10) is connected to the air duct (11).

2. A floating type air-air unit blade gas heat deicing device according to claim 1, characterized in that: The outlet of the air blast duct (11) is arranged at the leading edge (2) of the blade through a blade tip leading edge insulation plate (6).

3. A floating type air-air unit blade gas heat deicing device according to claim 2, characterized in that: The blade tip leading edge thermal insulation plate (6) uses thermal insulation material to connect the blade leading edge (2) and the blade leading edge web (4).

4. A floating type air-air unit blade gas heat deicing device according to claim 1, characterized in that: The output ends of the cabin humidity sensor (7) and the temperature sensor (8) are connected to the input end of the start-stop control system (9) via a data transmission line (12).

5. The floating type air-air unit blade air-heat deicing device according to claim 1 is characterized in that: The temperature sensor (8) is used to measure the wall temperature at the leading edge of the blade tip.

6. The floating type air-air unit blade gas heat deicing device according to claim 1, characterized in that: The cabin humidity sensor (7) is used to measure the humidity in the area surrounding the floating unit.

7. The floating type air-air unit blade air-heat deicing device according to claim 1 is characterized in that: The control start-stop system (9) is used to compare the acquired real-time humidity and temperature information with the built-in freezing critical value, and when judging whether the freezing condition is reached, output a command to the blower (10) so that the blower (10) works or is on standby.

8. A floating type air-air unit blade gas heat deicing device according to claim 7, characterized in that: The blower (10) is used to transport hot air to the front end section of the blade leading edge (2) through the blower duct (11).

9. The floating type air-air unit blade gas heat deicing device according to claim 1, characterized in that: The blast duct (11) is made of thermal insulation material.

10. The floating type air-air unit blade air-heat deicing device according to claim 1, characterized in that: The floating wind turbine blade (1) is divided into a blade leading edge (2), a blade trailing edge (3), a blade leading edge web (4) and a blade trailing edge web (5).

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