Device and method for heating post-curing inner cavity of wind power blade

Abstract

The invention belongs to the technical field of electric blade molds, and discloses a heating device and method for a post-curing inner cavity of a wind power blade. The heating assembly is connected with a heat exchange coil in the hot air conveying assembly through an inlet and outlet pipeline in a rapid and detachable mode to form a closed circulation path. After the heating assembly is started, the heating fluid in the heating assembly is heated to the set temperature and circularly conveyed into the heat exchange coil pipe, and efficient transfer and stable maintenance of heat energy are achieved. And after the heating fluid reaches the preset temperature, the centrifugal wind wheel is started, air heated by the heat exchange coil pipe forms hot air flow, the hot air flow is guided by the drainage plate to enter the inner cavity of the blade, and post-curing treatment is carried out. A temperature measuring probe is arranged in the inner cavity of the blade, so that the temperature in the cavity can be monitored in real time; through real-time temperature feedback linkage control of the intelligent temperature control part, the hot air conveying assembly, the heating assembly and the temperature measuring probe, precise heating and efficient energy consumption management in the post-curing process of the inner cavity of the blade can be achieved, and good operability and practical value are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade molds, and in particular to a post-curing inner cavity heating device and method for a wind turbine blade. Background Art

[0002] Post-curing of wind turbine blades refers to the process of further heating the blades after initial forming and curing by controlling the temperature and time to achieve a more complete internal reaction of the materials, thereby improving performance. This process primarily aims to increase the resin cross-linking degree, reduce stress concentration caused by temperature differences and shrinkage during the blade forming process, enhance the blade's fatigue resistance during long-term operation, prevent interlaminar delamination, and improve overall structural stability.

[0003] In actual applications, common post-curing methods for wind turbine blades include the following three: 1. Large-scale drying room heating: Place the blades in a constant temperature drying room and achieve overall uniform heating through hot air convection, radiation or floor heating. This method has precise temperature control and good curing effect, but has disadvantages such as high cost, large footprint and high energy consumption; 2. Insulation cover heating: Use a movable insulation cover to cover the blades, and heat them through hot air circulation or heating elements inside the cover. It has the advantages of flexible equipment and can be moved to any workstation, but the thermal uniformity is poor, and high requirements are placed on the sealing and thermal insulation performance of the cover; 3. In-mold heating: Electric heating wires, water / oil heating pipes or hot air channels are embedded in the blade mold. It has the characteristics of high thermal efficiency and strong process integration, but it also has problems such as high mold manufacturing cost, large local temperature difference and inconvenient operation.

[0004] Therefore, there is an urgent need for a post-curing inner cavity heating device and method for wind turbine blades to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a post-curing inner cavity heating device and method for wind turbine blades, which can effectively improve the energy utilization and conversion rate of inner cavity heating during the blade post-curing process, reduce manufacturing costs, reduce energy consumption and equipment operation and maintenance burden, and have strong operability.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Wind turbine blade post-curing cavity heating equipment, including:

[0008] A heating component is disposed outside the inner cavity of the blade, and the heating component has a built-in heating fluid circulation channel, and the heating fluid circulation channel can heat the heating fluid to a preset temperature;

[0009] A hot air delivery component is arranged at the root of the blade inner cavity, and the hot air delivery component includes a heat exchange coil, a centrifugal fan wheel and a guide plate. The heat exchange coil and the heating component can be quickly and detachably connected through an inlet and outlet pipe to form a closed circulation passage. The heating fluid circulation channel can deliver the heated heating fluid to the heat exchange coil for heat exchange; the centrifugal fan wheel is arranged on one side of the heat exchange coil and can form a hot air flow from the air heated by the heat exchange coil. The guide plate is arranged on the air outlet side of the centrifugal fan wheel to guide the hot air flow into the blade inner cavity;

[0010] An intelligent temperature control component includes a temperature measuring probe and an intelligent temperature control component placed in the inner cavity of the blade. The temperature measuring probe, the intelligent temperature control component, the centrifugal wind wheel and the heating component are electrically connected. The intelligent temperature control component can adjust the centrifugal wind wheel and the heating component according to the temperature measurement results of the temperature measuring probe.

[0011] Furthermore, the inlet and outlet of the heat exchange coil are both provided with quick-insert interfaces, and the inlet and outlet of the heating fluid circulation channel are both provided with quick-insert plugs that match the quick-insert interfaces, and the two can be quickly plugged in and out through the inlet and outlet pipes.

[0012] Furthermore, the inlet and outlet pipes are hot water high-pressure hoses.

[0013] Furthermore, the heating fluid circulation channel includes a heating fluid inlet, an electric heating tube, a circulation pump, a heating fluid outlet diverter and a heating fluid outlet in sequence. The heating fluid inlet and the heating fluid outlet are provided with the quick-connect plugs. The heating fluid can flow through each component in sequence and then be transported to the heat exchange coil, so that the heating fluid can be heated to a preset temperature in the heating fluid circulation channel and then used for heat exchange.

[0014] Furthermore, the heating component also includes a cooling fluid circulation channel for cooling the heating fluid circulation channel.

[0015] Furthermore, the cooling fluid circulation channel includes a cooling fluid inlet, a cooling fluid inlet diverter, a cooling solenoid valve and a cooling fluid outlet in sequence. The cooling solenoid valve is electrically connected to the intelligent temperature control unit and can be opened or closed according to the temperature control signal of the intelligent temperature control unit to control the flow of the cooling fluid.

[0016] Furthermore, a plurality of temperature measuring probes are provided and placed at different positions in the inner cavity of the blade.

[0017] Furthermore, each of the temperature measuring probes is a wireless temperature measuring probe.

[0018] Furthermore, the intelligent temperature control unit includes a wireless temperature measurement receiver, a controller and a display screen, and the wireless temperature measurement probe, the wireless temperature measurement receiver, the controller and the display screen are all electrically connected.

[0019] A method for heating the inner cavity of a wind turbine blade after post-curing, using the wind turbine blade inner cavity heating device after post-curing as described above, comprises the following steps:

[0020] S1: The heat exchange coil of the hot air delivery assembly is quickly and detachably connected to the heating assembly through the inlet and outlet pipes to form a closed circulation path, so that the heating fluid can circulate therein; at the same time, the temperature measuring probe is arranged in the inner cavity of the blade, and the temperature measuring probe, the intelligent temperature control unit, the centrifugal wind wheel and the heating assembly are electrically connected;

[0021] S2: placing the hot air delivery assembly at the root of the blade cavity and adjusting the guide plate toward the blade cavity;

[0022] S3: Editing a heating temperature curve through the intelligent temperature control unit to preset a target temperature and duration of the heating fluid in the heating component;

[0023] S4: starting the heating component to heat the heating fluid in the heating fluid circulation channel;

[0024] S5: When the temperature of the heating fluid reaches a preset value, the centrifugal wind wheel in the hot air delivery assembly is activated to form a hot air flow from the air heated by the heat exchange coil, and the hot air flow is guided by the guide plate into the inner cavity of the blade; if the temperature of the heating fluid does not reach the preset value, the heating fluid is continued to be heated until the temperature of the heating fluid reaches the preset value;

[0025] S6: The temperature measuring probe monitors the temperature of the inner cavity of the blade in real time. If the temperature does not reach the set value, the intelligent temperature control unit controls the centrifugal impeller to run at a high speed; and / or increases the preset temperature of the heating component;

[0026] If the temperature reaches the set value, the centrifugal fan is switched to low speed operation; and / or the preset temperature of the heating component is lowered;

[0027] S7: until the heating is completed, the hot air delivery component and the heating component are turned off, and the data collected by the intelligent temperature control component is recorded.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a post-curing inner cavity heating device and method for wind turbine blades. The intelligent temperature control component pre-edits the heating temperature curve, sets the target temperature and duration of each stage in the heating process, and realizes precise control and closed-loop regulation of the heating process. The heating component and the heat exchange coil in the hot air delivery component are connected in a quick and detachable manner through the inlet and outlet pipes to form a closed circulation path. After the heating component is started, the internal heating fluid is heated to the set temperature and circulated to the heat exchange coil to achieve efficient transfer and stable maintenance of thermal energy. When the heating fluid reaches the preset temperature, the centrifugal wind wheel in the hot air delivery component is started to form a hot air flow from the air heated by the heat exchange coil, and the hot air flow is guided into the inner cavity of the wind turbine blade through the guide plate to perform post-curing treatment on the blade. A temperature measuring probe is provided in the inner cavity of the blade to monitor the temperature in the cavity in real time and transmit the feedback signal to the intelligent temperature control component. If the blade cavity temperature does not reach the set value, the intelligent temperature control component automatically adjusts the system operating parameters, including controlling the centrifugal fan to switch to high-speed operation and / or increasing the set temperature of the heating component to accelerate the heating process. When the cavity temperature reaches the set value, the intelligent temperature control component can instruct the centrifugal fan to switch to low-speed mode and / or lower the temperature of the heating component to maintain the target temperature and reduce energy consumption. This can effectively improve thermal energy utilization efficiency and reduce heat loss. Through the intelligent temperature control component, hot air delivery component, heating component and temperature probe real-time temperature feedback linkage control, precise heating and efficient energy consumption management can be achieved during the post-curing process of the blade cavity, with good operability and practical value, reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of the post-curing inner cavity heating device for wind turbine blades of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the hot air delivery assembly in the present invention;

[0032] Figure 3 It is a schematic structural diagram of the heating component in the present invention;

[0033] Figure 4 It is a structural diagram of the intelligent temperature control component in the present invention;

[0034] Figure 5 This is a flow chart of the post-curing inner cavity heating method for wind turbine blades of the present invention.

[0035] In the picture:

[0036] 100, blade cavity;

[0037] 1. Heating assembly; 11. Heating fluid circulation channel; 111. Heating fluid inlet; 112. Electric heating tube; 113. Circulation pump; 114. Heating fluid outlet diverter; 115. Heating fluid outlet; 12. Inlet and outlet pipes; 13. Quick-connect plug; 14. Cooling fluid circulation channel; 141. Cooling fluid inlet; 142. Cooling fluid inlet diverter; 143. Cooling solenoid valve; 144. Cooling fluid outlet; 145. Filter; 15. Temperature sensor;

[0038] 2. Hot air delivery assembly; 21. Heat exchange coil; 22. Centrifugal fan; 23. Drain plate; 24. Quick-connect connector; 25. Housing; 26. Bracket;

[0039] 3. Intelligent temperature control component; 31. Temperature measuring probe; 32. Intelligent temperature control unit; 321. Wireless temperature measuring receiver; 322. Controller; 323. Display screen. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0041] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] Please refer to Figures 1 to 4 As shown, this embodiment provides a post-curing inner cavity heating device for wind turbine blades, including a heating component 1, a hot air delivery component 2 and an intelligent temperature control component 3, wherein the heating component 1 is arranged outside the blade inner cavity 100, and the heating component 1 has a built-in heating fluid circulation channel 11, which can heat the heating fluid to a preset temperature; the hot air delivery component 2 is arranged at the root position of the blade inner cavity 100, and the hot air delivery component 2 includes a heat exchange coil 21, a centrifugal wind wheel 22 and a guide plate 23, and the heat exchange coil 21 and the heating component 1 can be quickly and detachably connected through the inlet and outlet pipes 12 to form a closed circulation path, and the heating fluid The body circulation channel 11 can transport the heated heating fluid to the heat exchange coil 21 for heat exchange; the centrifugal fan 22 is arranged on one side of the heat exchange coil 21, and can form a hot air flow from the air heated by the heat exchange coil 21. The guide plate 23 is arranged on the air outlet side of the centrifugal fan 22 to guide the hot air flow into the blade cavity 100; the intelligent temperature control component 3 includes a temperature measuring probe 31 and an intelligent temperature control unit 32 placed in the blade cavity 100. The temperature measuring probe 31, the intelligent temperature control unit 32, the centrifugal fan 22 and the heating component 1 are electrically connected. The intelligent temperature control unit 32 can adjust the centrifugal fan 22 and the heating component 1 according to the temperature measurement result of the temperature measuring probe 31.

[0045] By pre-editing the heating temperature curve through the intelligent temperature control component 3, the target temperature and duration of each stage in the heating process are set to achieve precise control and closed-loop regulation of the heating process. The heating component 1 and the heat exchange coil 21 in the hot air conveying component 2 are connected in a quick and detachable manner through the inlet and outlet pipes 12 to form a closed circulation path. After the heating component 1 is started, the internal heating fluid is heated to the set temperature and circulated to the heat exchange coil 21 to achieve efficient transfer and stable maintenance of thermal energy. When the heating fluid reaches the preset temperature, the centrifugal wind wheel 22 in the hot air conveying component 2 is started to form a hot air flow from the air heated by the heat exchange coil 21, and the hot air flow is guided into the wind turbine blade cavity 100 through the guide plate 23 to perform post-curing treatment on the blade. A temperature measuring probe is provided in the blade cavity 100, which can monitor the temperature in the cavity in real time and transmit the feedback signal to the intelligent temperature control unit 32. If the temperature of the blade cavity 100 does not reach the set value, the intelligent temperature control component 32 can automatically adjust the system operating parameters, including controlling the centrifugal fan wheel 22 to switch to high-speed operation mode and / or increase the set temperature of the heating component 1 to speed up the heating process; when the cavity temperature reaches the set value, the intelligent temperature control component 3 can instruct the centrifugal fan wheel 22 to switch to low-speed mode and / or lower the temperature of the heating component 1 to maintain the target temperature and reduce energy consumption.

[0046] This post-curing internal cavity heating system for wind turbine blades features a modular overall structure. Its quick-connect, closed-loop heating assembly 1 and hot air delivery assembly 2 facilitate installation and maintenance, effectively improving thermal energy utilization efficiency and reducing heat loss. Through real-time temperature feedback from the intelligent temperature control unit 32, hot air delivery assembly 2, heating assembly 1, and temperature probe 31, precise heating and efficient energy management are achieved within the blade cavity 100 during post-curing, ensuring excellent operability, practicality, and cost reduction.

[0047] Optionally, the heating fluid contained in the heating component 1 can be, but is not limited to, thermal oil or water, etc., which is not specifically limited here.

[0048] like Figure 2 As shown, specifically, the inlet and outlet of the heat exchange coil 21 are both provided with quick-plug interfaces 24, and the inlet and outlet of the heating fluid circulation channel 11 are both provided with quick-plug plugs 13 that match the quick-plug interfaces 24. The two can be quickly plugged in and out through the inlet and outlet pipes 12. The quick-plug structure does not require the aid of tools, greatly shortens the time required for equipment installation, debugging and maintenance, improves work efficiency, and facilitates the rapid construction of a closed heat flow cycle between the heating component 1 and the heat exchange coil 21.

[0049] Optionally, the inlet and outlet pipes 12 can be, but are not limited to, hot water high-pressure hoses, wherein the hot water high-pressure hoses are made of high-temperature resistant materials (such as reinforced rubber or composite polymers), which can withstand the transportation of heating fluids at higher temperatures, ensuring long-term stable operation in high-temperature environments, meeting the circulation requirements of heating fluids (such as hot water, thermal oil, etc.) under high-temperature conditions, and ensuring the efficiency of the heating system; and the hose material is flexible and can be freely bent and bypassed in complex equipment structures, and is suitable for environments with limited space or complex assembly paths.

[0050] In addition, a stainless steel shell 25 is provided on the outside of the hot air delivery component 2 for overall packaging and protection, thereby improving the structural strength and corrosion resistance of the hot air delivery component 2 and effectively protecting the internal components from the influence of the external environment; a bracket 26 is installed at the bottom of the hot air delivery component 2 for providing firm support during the operation of the equipment, ensuring smooth, safe and reliable operation.

[0051] like Figure 3 As shown, in some optional embodiments, the heating fluid circulation channel 11 includes a heating fluid inlet 111, an electric heating pipe 112, a circulation pump 113, a heating fluid outlet diverter 114 and a heating fluid outlet 115 in sequence. The heating fluid inlet 111 and the heating fluid outlet 115 are provided with quick-plug interfaces 24, so that the heating fluid can flow through each component in sequence and be delivered to the heat exchange coil 21, so that the heating fluid can be heated to a preset temperature in the heating fluid circulation channel 11 for heat exchange; wherein, the circulation pump 113 can ensure continuous flow of the internal fluid to avoid local overheating or uneven temperature; the electric heating pipe 112 is used to directly heat the fluid, with a fast response and a fast heating speed; the heating fluid inlet 111 and the heating fluid outlet 115 are both provided with quick-plug plugs 13, which support quick plugging and unplugging, and facilitate system disassembly, maintenance and replacement; the heating fluid outlet diverter 114 can optimize the distribution of heat energy and can evenly or directionally distribute the heating fluid to one or more heat exchange units according to usage requirements, thereby helping to improve the flexibility and heat energy utilization of the heat exchange system. Each component (heating, electric heating, circulation, and diversion) is arranged in order according to its function, with clear functional division of labor, which is convenient for debugging, maintenance, and upgrading.

[0052] Optionally, the heating fluid circulation channel 11 also includes a temperature sensor 15, which is arranged inside the circulation channel for real-time monitoring and feedback of the temperature information of the heating fluid in the pipeline, so that the intelligent temperature control component 3 can accurately adjust the heating power and fluid temperature according to the detection data to achieve a more stable and accurate temperature control effect.

[0053] Continue as Figure 3As shown, in some optional embodiments, the heating assembly 1 further includes a cooling fluid circulation channel 14 for cooling the heating fluid circulation channel 11; wherein the cooling fluid circulation channel 14 can effectively remove excess heat during the heating process, prevent the electric heating tube 112, the circulation pump 113 or the pipeline from being damaged due to excessive temperature, and reduce the risk of thermal runaway; and, the cooling fluid circulation channel 14 is used in conjunction with the heating fluid circulation channel 11, so that the interior of the pipeline can respond more sensitively to temperature fluctuations, thereby achieving more precise temperature control;

[0054] Specifically, the cooling fluid circulation channel 14 includes a cooling fluid inlet 141, a cooling fluid inlet diverter 142, a cooling solenoid valve 143 and a cooling fluid outlet 144 in sequence. The cooling solenoid valve 143 is electrically connected to the intelligent temperature control unit 32 and can be opened or closed according to the temperature control signal of the intelligent temperature control unit 32 to control the flow of the cooling fluid; wherein, the cooling solenoid valve 143 can be linked with the intelligent temperature control component 3 to automatically control the switch state according to real-time temperature data, pre-set the temperature threshold, accurately control the flow of the cooling fluid, maintain operation in the optimal temperature range, realize the automation of the cooling process, reduce the use of cooling medium, and improve the overall energy utilization efficiency; the cooling fluid inlet diverter 142 helps to evenly distribute the cooling fluid at the inlet end, thereby improving the cooling effect.

[0055] Optionally, a filter 145 is provided at the cooling fluid inlet 141 to filter impurities or foreign matter in the cooling fluid to prevent foreign matter from entering the circulation system and affecting the stability of the equipment operation. The cooling fluid can be cold water or other fluids with cooling function, which are not specifically limited here.

[0056] like Figure 4 As shown, in some optional embodiments, multiple temperature measuring probes 31 are provided and placed at different positions in the blade cavity 100 to monitor the temperature of multiple points in real time, accurately grasp the temperature changes at each position, effectively identify local overheating or temperature unevenness, and avoid affecting the curing effect due to local temperature deviation.

[0057] Optionally, each temperature measuring probe 31 is a wireless temperature measuring probe 31 , wherein the wireless temperature measuring probe 31 does not require laying cables and data lines, thereby simplifying internal wiring work.

[0058] Specifically, the intelligent temperature control unit 32 includes a wireless temperature measurement receiver 321, a controller 322 and a display screen 323. The wireless temperature measurement probe 31, the wireless temperature measurement receiver 321, the controller 322 and the display screen 323 are all electrically connected; the wireless temperature measurement probe 31 is used to monitor the temperature of the blade cavity 100 in real time, and transmit the temperature information to the wireless temperature measurement receiver 321 wirelessly, and the wireless temperature measurement receiver 321 feeds back to the controller 322 for processing; after receiving the temperature information, if the controller 322 detects that the temperature of the blade cavity 100 is lower than the set temperature, it can control the centrifugal wind wheel 22 to increase the speed and / or increase the preset temperature of the heating component 1 to speed up the heating speed; when it detects that the temperature of the blade cavity 100 reaches or exceeds the set temperature, the controller 322 controls the centrifugal wind wheel 22 to reduce the speed and / or lower the temperature setting of the heating component 1 to maintain the target temperature and reduce energy consumption; the display screen 323 can display key information such as the heating temperature curve and the current temperature of the blade cavity 100 in real time, so as to facilitate the operator to monitor the system operation status and adjust parameters.

[0059] like Figure 5 As shown, this embodiment provides a method for heating the inner cavity of a wind turbine blade after post-curing, using a wind turbine blade inner cavity heating device after post-curing as in any of the above embodiments, including the following steps:

[0060] S1: The heat exchange coil 21 of the hot air delivery assembly 2 is quickly and detachably connected to the heating assembly 1 through the inlet and outlet pipes 12 to form a closed circulation path, allowing the heating fluid to circulate therein; at the same time, a temperature measuring probe 31 is arranged in the blade cavity 100, and the temperature measuring probe 31, the intelligent temperature control unit 32, the centrifugal impeller 22 and the heating assembly 1 are electrically connected;

[0061] S2: Place the hot air delivery assembly 2 at the root of the blade cavity 100 and adjust the guide plate 23 toward the blade cavity 100;

[0062] S3: Editing the heating temperature curve through the intelligent temperature control unit 32 to preset the target temperature and duration of the heating fluid in the heating component 1;

[0063] S4: starting the heating component 1 to heat the heating fluid in the heating fluid circulation channel 11;

[0064] S5: When the temperature of the heating fluid reaches a preset value, the centrifugal fan wheel 22 in the hot air delivery assembly 2 is activated, so that the air heated by the heat exchange coil 21 forms a hot air flow, and the guide plate 23 guides the hot air flow into the blade cavity 100; if the temperature of the heating fluid does not reach the preset value, the heating fluid is continued to be heated until the temperature of the heating fluid reaches the preset value;

[0065] S6: The temperature probe 31 monitors the temperature of the blade cavity 100 in real time. If the temperature does not reach the set value, the intelligent temperature control unit 32 controls the centrifugal fan 22 to run at a high speed; and / or raises the heating component 1 to a preset temperature;

[0066] If the temperature reaches the set value, the centrifugal fan wheel 22 is switched to low speed operation; and / or the preset temperature of the heating component 1 is lowered;

[0067] S7: until the heating is completed, the hot air delivery component 2 and the heating component 1 are turned off, and the data collected by the intelligent temperature control component 3 is recorded.

[0068] The heating temperature curve is pre-edited through the intelligent temperature control component 3, and the target temperature and duration of each stage in the heating process are set to achieve precise control and closed-loop regulation of the heating process. The heating component 1 and the heat exchange coil 21 in the hot air conveying component 2 are connected in a quick and detachable manner through the inlet and outlet pipes 12 to form a closed circulation path. After the heating component 1 is started, the internal heating fluid is heated to the set temperature and circulated to the heat exchange coil 21, achieving efficient transfer and stable maintenance of thermal energy. When the heating fluid reaches the preset temperature, the centrifugal wind wheel 22 in the hot air conveying component 2 is started to form a hot air flow with the air heated by the heat exchange coil 21, and the hot air flow is guided into the wind turbine blade cavity 100 through the guide plate 23 to perform post-curing treatment on the blade. A temperature measuring probe is provided in the blade cavity 100, which can monitor the temperature in the cavity in real time and transmit the feedback signal to the intelligent temperature control component 3. If the temperature of the blade cavity 100 does not reach the set value, the intelligent temperature control component 3 can automatically adjust the system operating parameters, including controlling the centrifugal fan 22 to switch to high-speed operation mode and / or increasing the set temperature of the heating component 1 to speed up the heating process; when the cavity temperature reaches the set value, the intelligent temperature control component 3 can instruct the centrifugal fan 22 to switch to low-speed mode and / or lower the temperature of the heating component 1 to maintain the target temperature and reduce energy consumption.

[0069] This post-curing inner cavity heating method for wind turbine blades can effectively improve the efficiency of heat energy utilization and reduce heat energy loss. Through the real-time temperature feedback linkage control of the intelligent temperature control unit 32, the hot air delivery component 2, the heating component 1 and the temperature measuring probe 31, precise heating and efficient energy consumption management can be achieved in the post-curing process of the blade inner cavity 100. It has good operability and practical value and reduces costs.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Wind turbine blade post-curing cavity heating equipment, characterized in that: include: A heating component (1) is arranged outside the blade inner cavity (100), wherein the heating component (1) has a built-in heating fluid circulation channel (11), and the heating fluid circulation channel (11) can heat the heating fluid to a preset temperature; A hot air conveying component (2) is arranged at the root of the blade inner cavity (100), and the hot air conveying component (2) includes a heat exchange coil (21), a centrifugal fan wheel (22) and a guide plate (23). The heat exchange coil (21) and the heating component (1) can be quickly and detachably connected through an inlet and outlet pipe (12) to form a closed circulation passage. The heating fluid circulation channel (11) can convey the heated heating fluid to the heat exchange coil (21) for heat exchange; the centrifugal fan wheel (22) is arranged on one side of the heat exchange coil (21) and can form a hot air flow from the air heated by the heat exchange coil (21); the guide plate (23) is arranged on the air outlet side of the centrifugal fan wheel (22) to guide the hot air flow into the blade inner cavity (100); An intelligent temperature control component (3) comprises a temperature measuring probe (31) and an intelligent temperature control component (32) disposed in the inner cavity (100) of the blade, wherein the temperature measuring probe (31), the intelligent temperature control component (32), the centrifugal wind wheel (22) and the heating component (1) are electrically connected, and the intelligent temperature control component (32) can adjust the centrifugal wind wheel (22) and the heating component (1) according to the temperature measurement result of the temperature measuring probe (31).

2. The post-curing inner cavity heating device for wind turbine blades according to claim 1, characterized in that: The inlet and outlet of the heat exchange coil (21) are both provided with quick-insert interfaces (24), and the inlet and outlet of the heating fluid circulation channel (11) are both provided with quick-insert plugs (13) that match and connect with the quick-insert interfaces (24), and the two can be quickly plugged in and out through the inlet and outlet pipes (12).

3. The post-curing inner cavity heating device for wind turbine blades according to claim 2, characterized in that: The inlet and outlet pipes (12) are hot water high-pressure hoses.

4. The post-curing inner cavity heating device for wind turbine blades according to claim 2, characterized in that: The heating fluid circulation channel (11) comprises a heating fluid inlet (111), an electric heating pipe (112), a circulation pump (113), a heating fluid outlet diverter (114) and a heating fluid outlet (115) in sequence. The heating fluid inlet (111) and the heating fluid outlet (115) are provided with the quick plug (13). The heating fluid can flow through each component in sequence and then be transported to the heat exchange coil (21), so that the heating fluid can be heated to a preset temperature in the heating fluid circulation channel (11) and then used for heat exchange.

5. The post-curing inner cavity heating device for wind turbine blades according to claim 4, characterized in that: The heating component (1) further comprises a cooling fluid circulation channel (14) for cooling the heating fluid circulation channel (11).

6. The post-curing inner cavity heating device for wind turbine blades according to claim 5, characterized in that: The cooling fluid circulation channel (14) includes a cooling fluid inlet (141), a cooling fluid inlet diverter (142), a cooling solenoid valve (143) and a cooling fluid outlet (144) in sequence. The cooling solenoid valve (143) is electrically connected to the intelligent temperature control unit (32) and can be opened or closed according to a temperature control signal of the intelligent temperature control unit (32) to control the flow of the cooling fluid.

7. The wind turbine blade post-curing inner cavity heating device according to claim 1, characterized in that: A plurality of temperature measuring probes (31) are provided and placed at different positions in the blade inner cavity (100).

8. The post-curing inner cavity heating device for wind turbine blades according to claim 7, characterized in that: Each of the temperature measuring probes (31) is a wireless temperature measuring probe (31).

9. The wind turbine blade post-curing inner cavity heating device according to claim 8, characterized in that: The intelligent temperature control unit (32) comprises a wireless temperature measurement receiver (321), a controller (322) and a display screen (323), and the wireless temperature measurement probe (31), the wireless temperature measurement receiver (321), the controller (322) and the display screen (323) are all electrically connected.

10. A post-curing inner cavity heating method for wind turbine blades, characterized in that: The post-curing inner cavity heating device for wind turbine blades according to any one of claims 1 to 9 comprises the following steps: S1: The heat exchange coil (21) of the hot air conveying component (2) is quickly and detachably connected to the heating component (1) through the inlet and outlet pipes (12) to form a closed circulation path, so that the heating fluid can circulate therein; at the same time, the temperature measuring probe (31) is arranged in the inner cavity (100) of the blade, and the temperature measuring probe (31), the intelligent temperature control unit (32), the centrifugal wind wheel (22) and the heating component (1) are electrically connected; S2: placing the hot air conveying assembly (2) at the root of the blade inner cavity (100), and adjusting the guide plate (23) toward the blade inner cavity (100); S3: editing a heating temperature curve through the intelligent temperature control unit (32) to preset a target temperature and duration of the heating fluid in the heating component (1); S4: starting the heating component (1) to heat the heating fluid in the heating fluid circulation channel (11); S5: When the temperature of the heating fluid reaches a preset value, the centrifugal wind wheel (22) in the hot air delivery assembly (2) is started, so that the air heated by the heat exchange coil (21) forms a hot air flow, and the guide plate (23) guides the hot air flow into the blade cavity (100); if the temperature of the heating fluid does not reach the preset value, the heating fluid is continued to be heated until the temperature of the heating fluid reaches the preset value; S6: The temperature measuring probe (31) monitors the temperature of the blade inner cavity (100) in real time. If the temperature does not reach a set value, the intelligent temperature control unit (32) controls the centrifugal wind wheel (22) to run at a high speed; and / or increases the preset temperature of the heating component (1); If the temperature reaches a set value, the centrifugal fan wheel (22) is switched to low-speed operation; and / or the preset temperature of the heating component (1) is lowered; S7: until the heating is finished, the hot air delivery component (2) and the heating component (1) are turned off, and the data collected by the intelligent temperature control component (3) are recorded.

Images