A method for installing a hot air de-icing device for a wind turbine blade

Abstract

The application discloses a kind of wind power blade hot air deicing device installation methods, comprising: S1, wind power blade pretreatment;S2, air blast heating assembly is installed on fan, the strand air outlet of air blast heating assembly is towards the wind power blade;S3, sensor detection component is set on wind power blade, the sensor detection component is connected with control system, communication system component.This application is installed with air blast heating assembly on wind driven generator, and the strand air outlet of air blast heating assembly is towards the wind power blade, so that winter fan blade icing phenomenon can be eliminated, to avoid wind power generation system large-area off-grid, unit power generation power reduction and other problems;At the same time, through sensor detection component, the icing phenomenon of fan blade can be monitored in real time on-line, to ensure that icing phenomenon is handled in time.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a method for installing a hot air de-icing device for wind turbine blades. Background Technology

[0002] Currently, facing the high demand for power grid load during peak winter seasons, and considering the value of wind power as an alternative energy source and its value in reducing environmental pollution, wind power has become the most competitive power supply product.

[0003] However, wind farms are mostly located in high-altitude areas with unique meteorological and topographical conditions, making wind turbine blades prone to icing in winter. This leads to widespread grid disconnection and reduced power output of the wind power generation system. Furthermore, the icing mechanism of wind turbine blades is complex, and the design of de-icing devices is intricate, posing significant research and development challenges. Electric heating wind turbines are also more susceptible to lightning strikes and require more complex maintenance. Therefore, there is an urgent need to overcome the challenges of hot air de-icing technology for wind turbine blades and develop entirely new wind turbine icing and de-icing technology systems and equipment installation methods to ensure the normal operation of wind power generation systems and reliable power supply to the grid. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an installation method for a hot air de-icing device for wind turbine blades.

[0005] To solve the above-mentioned technical problems, the present invention discloses an installation method for a hot air de-icing device for wind turbine blades, comprising: S1, pretreatment of wind turbine blades; S2, installation of a blower heating assembly on a wind turbine, wherein the air outlet of the blower heating assembly faces the wind turbine blades; S3, installation of a sensing and detection assembly on the wind turbine blades, wherein the sensing and detection assembly is connected to a control system and a communication system assembly.

[0006] Furthermore, step S1 includes:

[0007] S11. Remove the manhole plate bolts, remove the manhole plate, clean all dust and impurities from the inner surface of the blade, mark the hand lay-up area, perform surface rough grinding, clean the grinding area, and adjust the blade attitude pitch to adjust the blade attitude so that the leading edge is upward and the web is in a horizontal position.

[0008] S12. Place the sensor and the base together at the drilled position of the ventilation pipe. Hand lay a layer of biaxial cloth around the support base to fix it. The sensor's signal line smoothly transitions to the web plate along the ventilation pipe and is hand-laid together during the ventilation pipe hand lay-up process.

[0009] S13, install the ventilation system, the ventilation system includes two parts of the ventilation pipe and the baffle, the blade is brought in the inside in batches during construction, the baffle is assembled with the first ventilation pipe, the first ventilation pipe is deeply brought into the inside of the baffle, and the remaining ventilation pipes are connected into an integrated body by using the joint, the gap between the ventilation pipe and the joint is filled by using the structural glue, the ventilation pipe and the baffle are pre-fixed, and the structural glue is used for transition at the contact position of the ventilation pipe and the web plate;

[0010] S14, perform hand lay-up material deployment work in the air flow area, the hand lay-up material is deployed and used immediately, and the storage time should not exceed 2 hours;

[0011] S15, the support is placed in the specified position, the gap between the support and the blade is filled, and the hand lay-up construction is performed, and at least one layer of release cloth can be covered on the hand lay-up area according to the ambient temperature after the hand lay-up is completed;

[0012] S16, perform the blade posture variable pitch adjustment, and adjust to the pitch collection position to make the web plate vertical.

[0013] Further, the step S2 includes blower heater assembly, electrical screen cabinet installation, torsion cable installation and screen cabinet cable connection.

[0014] Further, the step S2 includes the following steps:

[0015] S21, after the heater support is fixed and stable by hand lay-up, the heater is fixed on the support by using stainless steel locking bolts and locking washers;

[0016] S22, after the blower support is fixed and stable by hand lay-up, the blower is fixed on the support by using stainless steel locking bolts and locking washers;

[0017] S23, the heater is connected with the corrugated pipe by using stainless steel locking bolts and locking nuts;

[0018] S24, the electrical screen cabinet installation includes blade root control cabinet installation, power distribution box installation, nacelle control cabinet installation and tower foundation control cabinet installation;

[0019] S25, the blade torsion cable wiring support is fixed on the hub bearing bolt, the torsion cable support is installed by using a screw, a universal bearing is additionally installed at the center of the torsion cable, and the cable is corresponded with the blade torsion cable support center through the hub torsion cable support;

[0020] S26, the screen cabinet cable is sequentially connected with each cabinet body in the order of blade-hub-nacelle-tower foundation-box transformer.

[0021] Further, the step S24 comprises: the blade root control cabinet box is connected with the blade root hand-made support through the anti-loosening screw, the prepared power distribution box support is fixed on the inner wall of the hub, the box is connected with the support through the anti-loosening screw; the prepared nacelle control cabinet support is fixed on the inner wall of the nacelle, and the box is connected with the support through the anti-loosening screw; the prepared tower base control cabinet support is fixed on the tower base surface, and the tower base control cabinet is connected with the support through the anti-loosening screw.

[0022] Further, the step S26 comprises: the cables of the connected blower, the heater and the blade root control cabinet are fixed on the inner wall of the blade through hand-pasting; the cables of the connected blade sensor and the blade root control cabinet are fixed on the inner wall of the blade through hand-pasting; the cables of the connected blade root control cabinet and the power distribution box are connected through a twist clamp, and it is necessary to check whether the twist clamp universal bearing can rotate smoothly during installation; the cables of the connected power distribution box to the slip ring; the cables of the connected slip ring to the nacelle cabinet; the cables of the connected nacelle control cabinet to the tower base cabinet, the cables need to be fixed through a clamp, and the cable bending radius needs to be paid attention to when the cables are laid, and the cable sheath needs to be checked after the cables are laid; the cables of the connected tower base cabinet to the box transformer; and the cables are detected by using a multimeter to check whether the cables are smooth.

[0023] Further, the step S3 comprises:

[0024] S31, the signal lines of the pressure sensor and the temperature sensor in each blade are connected to the blade root control cabinet, wherein the four temperature sensors adopt PT100 wiring, enter the blade root control cabinet through an isolation grid, and the air volume sensor outputs through an on-off value;

[0025] S32, the blade root control cabinet communicates with the slip ring through CAN communication, and the connection cable is a signal line; the blade root control cabinet communicates with the blade root control cabinet of an adjacent blade through CAN communication, and the connection cable is a signal line; and a plurality of cables are connected from the slip ring to the nacelle control cabinet;

[0026] S33, one optical fiber is led out from the nacelle control cabinet, connected to the optical port switch of the tower base cabinet, and the optical port switch of the tower base cabinet is connected to the wind power plant local area network through the optical fiber.

[0027] Further, the step S33 comprises: one 4-core cable and one 3-core cable are connected from the slip ring to the nacelle control cabinet, wherein the 4-core cable is used for CAN communication, and the 3-core cable is used for transmitting power.

[0028] Compared with the prior art, the application has the advantages that:

[0029] The application can eliminate the icing phenomenon of the wind turbine blade in winter, avoid large-area disconnection of the wind power generation system and power reduction of the unit, etc., by installing the air blowing and heating assembly on the wind turbine, and by the air blowing and heating assembly having the air blowing port facing the wind power blade; meanwhile, the icing phenomenon of the wind turbine blade can be monitored in real time and on line by the sensing and detecting assembly, so as to ensure timely treatment of the icing phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the application and are incorporated herein for a description of the application. The use of the illustrations in the specification together with the detailed description is to explain embodiments of the application and not to limit the application. In the drawings:

[0031] Figure 1 A flowchart of a wind power blade hot air deicing device installation method disclosed in an embodiment of the application. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the application, the application will be described in more detail below in combination with the drawings and preferred embodiments, but the protection scope of the application is not limited to the following specific embodiments.

[0033] As shown in Figure 1 The application discloses a wind power blade hot air deicing device installation method, which comprises the following steps: S1, pre-treatment of the wind power blade; S2, installing an air blowing and heating assembly on the wind turbine, wherein the air blowing port of the air blowing and heating assembly faces the wind power blade; and S3, arranging a sensing and detecting assembly on the wind power blade, wherein the sensing and detecting assembly is connected with a control system and a communication system assembly.

[0034] In the embodiment, the step S1 comprises:

[0035] S11, removing the manhole plate bolt, removing the manhole plate, using a clean mop to clean all the dust and impurities on the LE web plate near the leading edge side and the blade inner surface within 14.4 m, marking the hand paste area on the LE web plate with a marker, using 60# sandpaper to manually polish the surface, and then using a cloth dipped with acetone to clean the polishing area; adjusting the blade posture by the owner party, and adjusting the blade posture to the leading edge upward and the web plate to the horizontal position;

[0036] S12, placing the PT100 sensor and the base in the position of the ventilation pipe drilling hole, connecting the sensor with the base by using the sensor self-bolt, and fixing a layer of 300mm*150mm 808g / m2 biaxial cloth around the bracket base. The signal line of the sensor is arranged in a wave shape along the ventilation pipe and is gently transitioned to the web plate, and is fixed together during the hand paste process of the ventilation pipe, and the signal line is more than 200mm away from the ventilation pipe.

[0037] S13, install the ventilation system, the ventilation system includes two parts of the ventilation pipe and the baffle, the blade is brought in several times during construction, the baffle is assembled with the first ventilation pipe at the position of 16 m, the first ventilation pipe is deeply inserted into the inside of the baffle by 200±20 mm, and the remaining ventilation pipes are connected into one body by using the joint, and the gap between the ventilation pipe and the joint is filled by using structural glue. The ventilation pipe and the baffle are pre-fixed by using wedge-shaped wood blocks, and structural glue is used to transition the contact position between the ventilation pipe and the web plate;

[0038] S14, 3Kg of hand lay-up material is prepared in the air flow area (the weight of the hand lay-up material is determined according to the length of the blade), the hand lay-up material is prepared and used immediately, and the storage time should not exceed 2 hours (when the environmental temperature is lower than 25℃); 2Kg of hand lay-up material is prepared in the air flow area (the weight of the hand lay-up material is determined according to the length of the blade), the hand lay-up material is prepared and used immediately, and the storage time should not exceed 2 hours (when the environmental temperature is lower than 25℃);

[0039] S15, the support is placed at the specified position, the gap between the support and the blade is filled, and the hand lay-up construction is performed, and at least one layer of release cloth is covered on the hand lay-up area according to the environmental temperature after the hand lay-up is completed;

[0040] S16, the owner party personnel adjust the blade posture to the feathering position, so that the web plate is vertical.

[0041] In the embodiment, the step S2 includes blower heater assembly, electrical screen cabinet installation, twisted cable installation and screen cabinet cable connection. Specifically, the step S2 includes the following steps:

[0042] S21, after the heater support is fixed and stable by hand lay-up, the heater is fixed on the support by using stainless steel lock nuts and lock washers;

[0043] S22, after the blower support is fixed and stable by hand lay-up, the blower is fixed on the support by using stainless steel lock nuts and lock washers;

[0044] S23, the heater is connected with the corrugated pipe by using stainless steel lock nuts and lock nuts;

[0045] S24, the electrical screen cabinet installation includes the blade root control cabinet installation, the power distribution box installation, the nacelle control cabinet installation and the tower base control cabinet installation; specifically, the blade root control cabinet box is connected with the blade hand-made support through the anti-loosening screw. The prepared power distribution box support is fixed on the inner wall of the hub, and the box is connected with the support through the anti-loosening screw. The prepared nacelle control cabinet support is fixed on the inner wall of the nacelle, and is connected with the inner wall of the nacelle through the bolt fixing mode, and the box is connected with the support through the anti-loosening screw. The prepared tower base control cabinet support is fixed on the tower base surface, and is connected with the tower base surface through the bolt fixing mode, and the tower base control cabinet is connected with the support through the anti-loosening screw;

[0046] S25, the blade torsion cable wiring support is fixed on the hub bearing bolt (the specific bolt position is subject to the previous survey), the torsion cable support is installed by borrowing the screw, the universal bearing is additionally installed at the center of the torsion cable, and the cable is correspondingly connected with the blade torsion cable support center through the hub torsion cable support; it is ensured that the maintenance personnel can normally pass through, and the cable is prevented from being twisted during the variable pitch;

[0047] S26, the screen cabinet cable is sequentially connected with each cabinet body in the order of blade-hub-nacelle-tower base-box transformer. The specific installation steps are as follows:

[0048] Firstly, the cables of the blower, the heater and the blade root control cabinet are connected, and the exposed cables are fixed on the inner wall of the blade by hand pasting; the cables of the blade sensor and the blade root control cabinet are connected, and the exposed cables are fixed on the inner wall of the blade by hand pasting;

[0049] Secondly, the cables of the blade root control cabinet and the power distribution box are connected through the torsion cable, and it is necessary to check whether the universal bearing of the torsion cable can smoothly rotate during installation; the cables of the power distribution box to the slip ring are connected;

[0050] Thirdly, the cables of the slip ring to the nacelle cabinet are connected; the cables of the nacelle control cabinet to the tower base cabinet are connected, the cables are fixed by the clamp, and the cable bending radius is paid attention to when the cable is laid; after the cable is laid, it is checked whether the cable sheath is damaged;

[0051] Finally, the cables of the tower base cabinet to the box transformer are connected; and the multimeter is used to detect whether the cable connection is smooth, and the communication manual operation mode and the automatic operation mode are tested and debugged.

[0052] In the embodiment, the step S3 comprises:

[0053] S31, the signal lines of 1 pressure sensor and 4 temperature sensors in each blade are connected to the blade root control cabinet, wherein the 4 temperature sensors adopt PT100 wiring, enter the blade root control cabinet through the isolation grid, and the air volume sensor outputs through the switching value;

[0054] S32, the blade root control cabinet communicates with the slip ring through CAN communication, and the connecting cable is a signal line; the blade root control cabinet communicates with the blade root control cabinet of the adjacent blade through CAN communication, and the connecting cable is a signal line; a 4-core cable and a 3-core cable are connected with the cabin control cabinet from the slip ring, wherein the 4-core cable is used for CAN communication, and the 3-core cable is used for transmitting power supply;

[0055] S33, a fiber is led out from the cabin control cabinet and connected to the optical port switch of the tower base cabinet, and the optical port switch of the tower base cabinet is connected to the wind power field local area network through the fiber.

[0056] The coating is used after mixing the components of the coating, and the coating is quickly stirred by using a stirrer; the roller is placed in the uniformly mixed coating, the roller is coated with the coating, and then the coating area is brushed from top to bottom by using a roller brush, and the coating thickness is kept uniform during the roller brushing. After the roller brushing is completed, the adhesive tape is torn off, and the coating is completely cured after 24 hours.

[0057] Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any skilled person in the art can make many possible changes and modifications to the technical solutions of the present application, or modify equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present application, by using the disclosed technical content. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solutions of the present application, shall fall within the scope of protection of the technical solutions of the present application.

Claims

1. A method for installing a hot air de-icing device for wind turbine blades, characterized in that, The application relates to a wind turbine blade pre-treatment method. S1, wind turbine blade pre-treatment; S2, installing a blast heating assembly on a fan, wherein a blast outlet of the blast heating assembly faces the wind turbine blade; S3, arranging a sensing detection assembly on the wind turbine blade, wherein the sensing detection assembly is connected with a control system and a communication system assembly; The step S1 comprises the following steps: S11, removing manhole plate bolts, removing the manhole plate, removing all dust and impurities on the inner surface of the blade, marking a hand lay-up area, rough polishing the surface of the hand lay-up area, cleaning the hand lay-up area, adjusting the blade posture, and making the blade posture adjust to a position where the leading edge is upward and the web plate is horizontal; S12, placing a sensor and a base in a ventilation pipe drilling position, fixing a layer of double-axis cloth around the base of the bracket during a hand lay-up process, and gently transitioning a signal line of the sensor to the web plate along the ventilation pipe; the sensor comprises a pressure sensor, a temperature sensor and an air volume sensor; S13, installing a ventilation system, wherein the ventilation system comprises a ventilation pipe and a baffle, the ventilation pipe and the baffle are sequentially brought into the blade during construction, the baffle is assembled with the first ventilation pipe, the first ventilation pipe is inserted into the baffle, the remaining ventilation pipes are connected into an integrated body by using a joint, a gap between the ventilation pipe and the joint is filled by using structural glue, the ventilation pipe and the baffle are pre-fixed, and the ventilation pipe and the web plate are transitioned by using structural glue; S14, performing hand lay-up material deployment work in an air smooth area, and using the hand lay-up material; S15, placing the bracket in a specified position, filling a gap between the bracket and the blade, performing hand lay-up construction, and covering release cloth on the hand lay-up area according to the environmental temperature after the hand lay-up construction is completed; S16, adjusting the blade posture, and adjusting the blade posture to a position where the web plate is vertical. The step S3 comprises the following steps: S31, connecting signal lines of the pressure sensor and the temperature sensor in each blade to a blade root control cabinet, wherein four temperature sensors are connected by using PT100 wires, enter the blade root control cabinet through an isolation grid, and an air volume sensor is output by using an on-off value; S32, the blade root control cabinet communicates with a slip ring through CAN communication, and a connection cable is a signal line; the blade root control cabinet communicates with blade root control cabinets of adjacent blades through CAN communication, and a connection cable is a signal line; a plurality of cables are connected between the slip ring and a cabin control cabinet; S33, leading out an optical fiber from the cabin control cabinet, connecting the optical fiber to an optical port switch of a tower base cabinet, and connecting the optical port switch of the tower base cabinet to a wind farm local area network through an optical fiber.

2. The method of installing a hot air de-icing device for a wind turbine blade according to claim 1, wherein, The step S2 comprises blast fan heater assembly, electrical screen cabinet installation, cable twisting installation and screen cabinet cable connection.

3. The method of installing a hot air de-icing device for a wind turbine blade according to claim 2, wherein, The step S2 comprises the following steps: S21, after the heater support is fixed and stabilized by hand lay-up, the heater is fixed on the support by stainless steel locking bolt and locking washer; S22, after the blower support is fixed and stabilized by hand lay-up, the blower is fixed on the support by stainless steel locking bolt and locking washer; S23, the heater is connected with the bellows by stainless steel locking bolt and locking nut; S24, the electrical screen cabinet installation comprises the installation of the blade root control cabinet, the installation of the power distribution box, the installation of the nacelle control cabinet and the installation of the tower base control cabinet; S25, the blade torsion cable wiring support is fixed on the wheel hub bearing bolt, the torsion cable support is installed by means of screw, universal bearing is additionally installed at the center of the torsion cable, and the cable is connected with the blade torsion cable support center through the wheel hub torsion cable support; S26, the screen cabinet cable is sequentially connected with each cabinet body in the order of blade-wheel hub-nacelle-tower base-box transformer.

4. The method of installing a hot air de-icing device for a wind turbine blade according to claim 3, wherein, The step S24 comprises: the blade root control cabinet box body is connected with the blade root hand lay-up support by locking screw, the prepared power distribution box support is fixed on the inner wall of the wheel hub, and the box body is connected with the support by locking screw; the prepared nacelle control cabinet support is fixed on the inner wall of the nacelle, and the box body is connected with the support by locking screw; the prepared tower base control cabinet support is fixed on the tower base surface, and the tower base control cabinet is connected with the support by locking screw.

5. The method of installing a hot air de-icing device for a wind turbine blade according to claim 4, wherein, The step S26 comprises: the cable connecting the blower, the heater and the blade root control cabinet, and the exposed cable is fixed on the inner wall of the blade by hand lay-up; the cable connecting the blade sensor and the blade root control cabinet, and the exposed cable is fixed on the inner wall of the blade by hand lay-up; the cable connecting the blade root control cabinet and the power distribution box through torsion, and it is necessary to check whether the torsion universal bearing can smoothly rotate during installation; the cable connecting the power distribution box to the slip ring; the cable connecting the slip ring to the nacelle cabinet; the cable connecting the nacelle control cabinet to the tower base cabinet, the cable needs to be fixed by clamping, and the cable bending radius needs to be paid attention to when the cable is laid, and the cable sheath needs to be checked after the cable is laid; the cable connecting the tower base cabinet to the box transformer; and the multimeter is used to detect whether the cable connection is smooth.

6. The method of installing a hot air de-icing device for a wind turbine blade according to claim 1, wherein, The step S33 comprises: one 4-core cable and one 3-core cable are connected with the nacelle control cabinet from the slip ring, wherein the 4-core cable is used for CAN communication, and the 3-core cable is used for transmitting power.

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