Offshore wind turbine blade plasma spray repair device

Abstract

The application discloses a marine wind turbine blade plasma spraying repair device and relates to the technical field of wind turbine blade repair.The medium in the corresponding gas washing bottle is blown into a gas mixing bottle through a corresponding output pipeline for mixing, and then the mixture is sprayed on a surface to be repaired through a jet reactor.Utilizing a controller, stage spraying control is realized.In a first stage spraying mode, argon is used as a working gas, and an epoxy resin and imidazole curing agent mixture is sprayed on the surface to be repaired to fill cracks on the surface to be repaired, thereby repairing cracks on the surface of the blade.After the first stage spraying mode is completed, a second stage spraying mode is executed, argon is used as the working gas, and a hydroxyl acrylate resin, linear saturated polyester resin, isocyanate curing agent and drier mixture is sprayed on the surface to be repaired to form a protective film, thereby achieving better repair effect.The design is simple and convenient in repair mode, easy to implement on site, short in cycle and small in workload.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan blade repair, in particular to a plasma spraying repair device for offshore fan blades. BACKGROUND

[0002] Offshore wind farms are widely used due to their characteristics of high wind speed, short static wind period, low turbulence intensity, and land resource saving. A complete offshore wind turbine is composed of four parts: blades, a fan, a tower body, and a base. The blades and the hub form a wind wheel, thereby converting wind energy into mechanical energy. The blade is the core component of a wind turbine for capturing wind energy and is the component that bears the most complex load and is directly exposed to wind and rain erosion for a long time. The state of the blade directly affects the power generation efficiency of the unit. The fan blades are prone to damage under long-term operating conditions, leading to material fatigue and mechanical fatigue of the blades. The performance of the blade material changes under the action of continuous stress and strain, which is usually manifested as corrosion, wear and tear, cracking, and other damage on the blade.

[0003] Currently, the protection of the blades generally uses the method of attaching a leading edge protective film. The protective film has strict requirements on the construction process. Before attaching the film, fine sandpaper is used to polish the surface of the leading edge film area, and then cleaning is performed. The work is relatively large, and small bubbles are not allowed during the film attaching process. Moreover, the protective film is easily damaged during transportation and hoisting. During the operation of the blade, phenomena such as bubbling, edge rolling, and weathering displacement of the protective film at the blade tip often occur. The protective film naturally ages and loses its protective function after four to five years of operation, which is relatively high in cost, difficult to construct on site, and has a long cycle. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a plasma spraying repair device for offshore fan blades to solve the technical problems of large work load and high construction difficulty of the existing blade protection and repair methods.

[0005] To achieve the above technical purpose, the present application provides a plasma spraying repair device for offshore fan blades, which comprises a gas bottle, a gas washing bottle group, a gas mixing bottle, a jet reactor, a power supply, and a controller.

[0006] The gas washing bottle group comprises a first gas washing bottle storing epoxy resin, a second gas washing bottle storing imidazole curing agent, a third gas washing bottle storing hydroxyl acrylate resin, a fourth gas washing bottle storing linear saturated polyester resin, a fifth gas washing bottle storing isocyanate curing agent, and a sixth gas washing bottle storing a drier.

[0007] The gas bottle stores argon and has a first output pipeline, a second output pipeline, a third output pipeline, a fourth output pipeline, a fifth output pipeline, a sixth output pipeline, and a seventh output pipeline.

[0008] The input end of the first gas washing bottle is connected with the first output pipeline through a first control valve, and the output end of the first gas washing bottle is connected with the mixed gas bottle;

[0009] The input end of the second gas washing bottle is connected with the second output pipeline through a second control valve, and the output end of the second gas washing bottle is connected with the mixed gas bottle;

[0010] The input end of the third gas washing bottle is connected with the third output pipeline through a third control valve, and the output end of the third gas washing bottle is connected with the mixed gas bottle;

[0011] The input end of the fourth gas washing bottle is connected with the fourth output pipeline through a fourth control valve, and the output end of the fourth gas washing bottle is connected with the mixed gas bottle;

[0012] The input end of the fifth gas washing bottle is connected with the fifth output pipeline through a fifth control valve, and the output end of the fifth gas washing bottle is connected with the mixed gas bottle;

[0013] The input end of the sixth gas washing bottle is connected with the sixth output pipeline through a sixth control valve, and the output end of the sixth gas washing bottle is connected with the mixed gas bottle;

[0014] The seventh output pipeline is connected with the mixed gas bottle through a seventh control valve;

[0015] The output end of the mixed gas bottle is connected with the input end of the jet flow reactor;

[0016] The power supply is electrically connected with the jet flow reactor;

[0017] The controller is electrically connected with the power supply, and is configured to control the power supply to excite the jet flow reactor to perform a one-stage spraying mode with a first preset power supply parameter when the first control valve, the second control valve and the seventh control valve are in an open state, and the third control valve, the fourth control valve, the fifth control valve and the sixth control valve are in a closed state;

[0018] The controller is further configured to control the power supply to excite the jet flow reactor to perform a two-stage spraying mode with a second preset power supply parameter when the first control valve and the second control valve are in a closed state, and the third control valve, the fourth control valve, the fifth control valve, the sixth control valve and the seventh control valve are in an open state.

[0019] Further, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, the sixth control valve and the seventh control valve are all electronic flow control valves.

[0020] Further, the power supply is a microsecond pulse power supply.

[0021] Further, the first preset power supply parameter includes an output voltage amplitude of 15kV and a repetition frequency of 4kHz.

[0022] Further, the second preset power supply parameter includes an output voltage amplitude of 20kV and a repetition frequency of 3kHz.

[0023] Further, the first control valve and the second control valve are used to control the concentration of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle respectively, so that the concentration ratio of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle is 100:13.

[0024] Further, the third control valve, the fourth control valve, the fifth control valve and the sixth control valve are used to control the concentration of the hydroxyl acrylic resin, the linear saturated polyester resin, the isocyanate curing agent and the drier blown into the gas mixing bottle respectively, so that the concentration ratio of the hydroxyl acrylic resin, the linear saturated polyester resin, the isocyanate curing agent and the drier blown into the gas mixing bottle is 40:10:40:1.

[0025] Further, when a one-stage spraying mode is executed, the nozzle of the jet reactor is 100mm-130mm away from the surface to be repaired.

[0026] When a two-stage spraying mode is executed, the nozzle of the jet reactor is 80mm-110mm away from the surface to be repaired.

[0027] Further, a rack and a moving device are further included.

[0028] The gas bottle, the gas washing bottle group, the gas mixing bottle, the jet reactor, the power supply and the controller are installed on the rack.

[0029] The moving device is connected with the rack and is used to drive the rack to move.

[0030] The controller is electrically connected with the moving device.

[0031] Further, the moving device is a drone.

[0032] From the above technical scheme can be seen, the offshore wind turbine blade plasma spraying repair device designed by the application uses argon as the working gas, and through the corresponding output pipeline, the medium in the corresponding gas washing bottle can be blown into the gas mixing bottle for mixing, and then the mixture is sprayed on the surface to be repaired through the jet reactor. Moreover, the controller is used to realize stage spraying control. In the first stage spraying mode, argon is used as the working gas to spray the mixture of epoxy resin and imidazole curing agent on the surface to be repaired to fill the cracks on the surface to be repaired, thereby repairing the cracks on the surface of the blade. After completing the first stage spraying mode, the second stage spraying mode is executed, argon is used as the working gas to spray the mixture of hydroxy acrylate resin, linear saturated polyester resin, isocyanate curing agent and drying agent on the surface to be repaired to form a protective film, so that better repair effect can be achieved. The above design can be well applied to offshore wind turbine blade repair, and the repair method is simple and convenient, easy to realize on site, short cycle and small workload. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0034] Figure 1 The structure diagram of the offshore wind turbine blade plasma spraying repair device provided in the present application is shown in the figure.

[0035] In the figure: 1, gas bottle; 11, first output pipeline; 12, second output pipeline; 13, third output pipeline; 14, fourth output pipeline; 15, fifth output pipeline; 16, sixth output pipeline; 17, seventh output pipeline; 21, first gas washing bottle; 22, second gas washing bottle; 23, third gas washing bottle; 24, fourth gas washing bottle; 25, fifth gas washing bottle; 26, sixth gas washing bottle; 3, gas mixing bottle; 4, jet reactor; 5, power supply; 61, first control valve; 62, second control valve; 63, third control valve; 64, fourth control valve; 65, fifth control valve; 66, sixth control valve; 67, seventh control valve; 7, controller. DETAILED DESCRIPTION

[0036] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the embodiments of the present application.

[0037] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be replaceably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] The embodiments of the present application disclose a plasma spraying repair device for offshore wind turbine blades.

[0040] Please refer to Figure 1 An embodiment of the offshore wind turbine blade plasma spraying repair device provided in the embodiments of the present application comprises:

[0041] The gas bottle 1, the gas washing bottle group, the gas mixing bottle 3, the jet reactor 4, the power supply 5 and the controller 7.

[0042] The gas washing bottle group comprises a first gas washing bottle 21 storing epoxy resin, a second gas washing bottle 22 storing imidazole curing agent, a third gas washing bottle 23 storing hydroxyl acrylate resin, a fourth gas washing bottle 24 storing linear saturated polyester resin, a fifth gas washing bottle 25 storing isocyanate curing agent and a sixth gas washing bottle 26 storing drier.

[0043] The gas bottle 1 stores argon and has a first output pipeline 11, a second output pipeline 12, a third output pipeline 13, a fourth output pipeline 14, a fifth output pipeline 15, a sixth output pipeline 16 and a seventh output pipeline 17.

[0044] The input end of the first gas washing bottle 21 is connected with the first output pipeline 11 through a first control valve 61, and the output end of the first gas washing bottle 21 is connected with the gas mixing bottle 3.

[0045] The input end of the second scrubbing bottle 22 is connected with the second output pipeline 12 through the second control valve 62, and the output end of the second scrubbing bottle 22 is connected with the mixing bottle 3.

[0046] The input end of the third scrubbing bottle 23 is connected with the third output pipeline 13 through the third control valve 63, and the output end of the third scrubbing bottle 23 is connected with the mixing bottle 3.

[0047] The input end of the fourth scrubbing bottle 24 is connected with the fourth output pipeline 14 through the fourth control valve 64, and the output end of the fourth scrubbing bottle 24 is connected with the mixing bottle 3.

[0048] The input end of the fifth scrubbing bottle 25 is connected with the fifth output pipeline 15 through the fifth control valve 65, and the output end of the fifth scrubbing bottle 25 is connected with the mixing bottle 3.

[0049] The input end of the sixth scrubbing bottle 26 is connected with the sixth output pipeline 16 through the sixth control valve 66, and the output end of the sixth scrubbing bottle 26 is connected with the mixing bottle 3.

[0050] The seventh output pipeline 17 is connected with the mixing bottle 3 through the seventh control valve 67, and the output end of the mixing bottle 3 is connected with the input end of the jet reactor 4.

[0051] The power supply 5 is electrically connected with the jet reactor 4.

[0052] The controller 7 is electrically connected with the power supply 5, and is configured to control the power supply 5 to excite the jet reactor 4 to perform a one-stage spraying mode with first preset power supply parameters when the first control valve 61, the second control valve 62 and the seventh control valve 67 are in an open state, and the third control valve 63, the fourth control valve 64, the fifth control valve 65 and the sixth control valve 66 are in a closed state.

[0053] The controller 7 is further configured to control the power supply 5 to excite the jet reactor 4 to perform a two-stage spraying mode with second preset power supply parameters when the first control valve 61 and the second control valve 62 are in a closed state, and the third control valve 63, the fourth control valve 64, the fifth control valve 65, the sixth control valve 66 and the seventh control valve 67 are in an open state.

[0054] The plasma spraying repair device for offshore wind turbine blades designed in the application uses argon as working gas, and through the corresponding output pipeline, the medium in the corresponding gas washing bottle can be blown into the gas mixing bottle 3 for mixing, and then the mixture is sprayed on the surface to be repaired through the jet reactor 4. Moreover, the controller 7 is used to realize stage-by-stage spraying control. In the first stage spraying mode, argon is used as the working gas to spray the mixture of epoxy resin and imidazole curing agent on the surface to be repaired to fill the cracks on the surface to be repaired, thereby repairing the cracks on the surface of the blade. After the first stage spraying mode is completed, the second stage spraying mode is executed, argon is used as the working gas to spray the mixture of hydroxy acrylic resin, linear saturated polyester resin, isocyanate curing agent and drying catalyst on the surface to be repaired to form a protective film, so that better repair effect can be achieved. The above design can be well applied to the repair of offshore wind turbine blades, and the repair method is simple and convenient, easy to implement on site, short cycle and small workload.

[0055] The mixture of epoxy resin and imidazole curing agent provided in the application can form a good repair material, and the mixture of hydroxy acrylic resin, linear saturated polyester resin, isocyanate curing agent and drying catalyst can form a good protective film material, which can be well used for the repair of wind turbine blades. Various medium materials in the corresponding gas washing bottles are in liquid state, and the epoxy resin can be EPO1441 type epoxy resin.

[0056] In addition, the gas washing bottles for storing medium in the application are not limited to the six provided, and more can be provided. According to actual needs, a corresponding number of gas washing bottles can be added, and the corresponding medium materials can be arranged in the added gas washing bottles. Correspondingly, the number of output pipelines and control valves is increased one by one. Furthermore, the output ends of each gas washing bottle in the application can be connected to the gas mixing bottle 3 through a one-way valve to avoid backflow.

[0057] The above is embodiment one of the plasma spraying repair device for offshore wind turbine blades provided in the application, and the following is embodiment two of the plasma spraying repair device for offshore wind turbine blades provided in the application, please refer to Figure 1 .

[0058] Based on the scheme of the above embodiment one:

[0059] Further, in order to facilitate operation control, the first control valve 61, the second control valve 62, the third control valve 63, the fourth control valve 64, the fifth control valve 65, the sixth control valve 66 and the seventh control valve 67 can be electronic flow control valves. For example, each control valve can be electrically connected to the controller 7 to be controlled by the controller 7. Of course, it can also be a manual flow control valve, which is not limited.

[0060] Further, the power supply 5 can be a microsecond pulse power supply, which can better excite the jet flow reactor 4. In the present application, the jet flow reactor 4 can use a glass tube with a length of 140 mm, an inner diameter of 6 mm, and an outer diameter of 8 mm as a blocking medium, a copper needle with a diameter of 3 mm as a high-voltage electrode, and a copper foil with a width of 10 mm as a grounding electrode. The distance between the tip of the copper needle and the copper foil is 20 mm, and the distance between the copper foil and the glass tube nozzle is 15 mm.

[0061] Further, the first preset power supply parameter can include an output voltage amplitude of 15 kV and a repetition frequency of 4 kHz.

[0062] Further, the second preset power supply parameter can include an output voltage amplitude of 20 kV and a repetition frequency of 3 kHz.

[0063] Further, the first control valve 61 and the second control valve 62 are used to control the concentrations of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle 3, respectively, so that the concentration ratio of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle 3 is 100:13. In the one-stage spraying mode, the flow rate of argon blown into the gas mixing bottle 3 is controlled by the seventh control valve 67 to be 1 L / min, the flow rate of the epoxy resin blown into the gas mixing bottle 3 is controlled by the first control valve 61 to be 15 mL / min, and the flow rate of the imidazole curing agent blown into the gas mixing bottle 3 is controlled by the second control valve 62 to be 2 mL / min. With reasonable flow rate control, the concentration ratio of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle 3 can be more accurately controlled to be 100:13.

[0064] Further, the third control valve 63, the fourth control valve 64, the fifth control valve 65, and the sixth control valve 66 are used to control the concentrations of the hydroxy acrylic resin, the linear saturated polyester resin, the isocyanate curing agent, and the drier blown into the gas mixing bottle 3, respectively, so that the concentration ratio of the hydroxy acrylic resin, the linear saturated polyester resin, the isocyanate curing agent, and the drier blown into the gas mixing bottle 3 is 40:10:40:1. In the two-stage spraying mode, the flow rate of the hydroxy acrylic resin blown into the gas mixing bottle 3 is controlled by the third control valve 63 to be 15 mL / min, the flow rate of the linear saturated polyester resin blown into the gas mixing bottle 3 is controlled by the fourth control valve 64 to be 3 mL / min, the flow rate of the isocyanate curing agent blown into the gas mixing bottle 3 is controlled by the fifth control valve 65 to be 15 mL / min, and the flow rate of the drier blown into the gas mixing bottle 3 is controlled by the sixth control valve 66 to be 1 mL / min. With this rate control, the concentration ratio of the hydroxy acrylic resin, the linear saturated polyester resin, the isocyanate curing agent, and the drier blown into the gas mixing bottle 3 can be more accurately controlled to be 40:10:40:1.

[0065] Further, when performing the one-stage spraying mode, the nozzle of the jet reactor 4 is 100mm-130mm away from the surface to be repaired; a reasonable spraying distance can better achieve the spraying effect, the spraying is more uniform, and the repair effect is better.

[0066] When performing the two-stage spraying mode, the nozzle of the jet reactor 4 is 80mm-110mm away from the surface to be repaired; an isolated spraying distance can better achieve the spraying effect, the spraying is more uniform, and the protective film formed is better.

[0067] Further, it also includes a rack (not shown in the figure) and a moving device (not shown in the figure).

[0068] The gas bottle 1, the gas washing bottle group, the mixed gas bottle 3, the jet reactor 4, the power supply 5, and the controller 7 are installed on the rack to achieve integrated installation and facilitate connection with the moving device or other devices.

[0069] The moving device is connected with the rack to drive the rack to move, and the controller 7 is electrically connected with the moving device. By controlling the moving device to run to drive the rack to move, the jet reactor 4 can be adjusted to move along the crack direction to fully fill the mixed material for repair into the crack or fully cover the material for forming a protective film on the filled crack to achieve better repair effect.

[0070] Further, the moving device can be a drone, which is more convenient for repairing the blade at a higher height, and of course can also be other moving devices such as a hoisting device, etc., which are not limited in particular.

[0071] The above has introduced in detail the offshore wind turbine blade plasma spraying repair device provided by the present application. For those skilled in the art, according to the idea of the embodiment of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. Offshore wind turbine blade plasma spray repair device, characterized in that The gas cylinder (1), the gas washing cylinder group, the mixed gas cylinder (3), the jet reactor (4), the power supply (5) and the controller (7); The gas washing cylinder group includes a first gas washing cylinder (21) storing epoxy resin, a second gas washing cylinder (22) storing imidazole curing agent, a third gas washing cylinder (23) storing hydroxy acrylic resin, a fourth gas washing cylinder (24) storing linear saturated polyester resin, a fifth gas washing cylinder (25) storing isocyanate curing agent and a sixth gas washing cylinder (26) storing drier; The gas cylinder (1) stores argon and has a first output pipeline (11), a second output pipeline (12), a third output pipeline (13), a fourth output pipeline (14), a fifth output pipeline (15), a sixth output pipeline (16) and a seventh output pipeline (17); The input end of the first gas washing cylinder (21) is connected with the first output pipeline (11) through a first control valve (61), and the output end of the first gas washing cylinder (21) is connected with the mixed gas cylinder (3); The input end of the second gas washing cylinder (22) is connected with the second output pipeline (12) through a second control valve (62), and the output end of the second gas washing cylinder (22) is connected with the mixed gas cylinder (3); The input end of the third gas washing cylinder (23) is connected with the third output pipeline (13) through a third control valve (63), and the output end of the third gas washing cylinder (23) is connected with the mixed gas cylinder (3); The input end of the fourth gas washing cylinder (24) is connected with the fourth output pipeline (14) through a fourth control valve (64), and the output end of the fourth gas washing cylinder (24) is connected with the mixed gas cylinder (3); The input end of the fifth gas washing cylinder (25) is connected with the fifth output pipeline (15) through a fifth control valve (65), and the output end of the fifth gas washing cylinder (25) is connected with the mixed gas cylinder (3); The input end of the sixth gas washing cylinder (26) is connected with the sixth output pipeline (16) through a sixth control valve (66), and the output end of the sixth gas washing cylinder (26) is connected with the mixed gas cylinder (3); The seventh output pipeline (17) is connected with the mixed gas cylinder (3) through a seventh control valve (67); The output end of the mixed gas cylinder (3) is connected with the input end of the jet reactor (4); The power supply (5) is electrically connected with the jet reactor (4); The controller (7) is electrically connected with the power supply (5) and is used for controlling the power supply (5) to excite the jet reactor (4) to perform a one-stage spraying mode with a first preset power supply parameter when the first control valve (61), the second control valve (62) and the seventh control valve (67) are in an open state and the third control valve (63), the fourth control valve (64), the fifth control valve (65) and the sixth control valve (66) are in a closed state. The controller (7) is further configured to control the power supply (5) to excite the jet reactor (4) to perform a two-stage spraying mode with second preset power supply parameters when the first control valve (61) and the second control valve (62) are in a closed state, and the third control valve (63), the fourth control valve (64), the fifth control valve (65), the sixth control valve (66), and the seventh control valve (67) are in an open state.

2. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that The first control valve (61), the second control valve (62), the third control valve (63), the fourth control valve (64), the fifth control valve (65), the sixth control valve (66), and the seventh control valve (67) are all electronic flow control valves.

3. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that The power supply (5) is a microsecond pulse power supply.

4. Offshore wind turbine blade plasma spray repair apparatus according to claim 3, characterised in that, The first preset power supply parameters include an output voltage amplitude of 15 kV and a repetition frequency of 4 kHz.

5. Offshore wind turbine blade plasma spray repair apparatus according to claim 3, characterized in that The second preset power supply parameters include an output voltage amplitude of 20 kV and a repetition frequency of 3 kHz.

6. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that The first control valve (61) and the second control valve (62) are configured to control the concentrations of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle (3) respectively, so that the concentration ratio of the epoxy resin and the imidazole curing agent blown into the gas mixing bottle (3) is 100:

13.

7. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that The third control valve (63), the fourth control valve (64), the fifth control valve (65), and the sixth control valve (66) are configured to control the concentrations of the hydroxy acrylic resin, the linear saturated polyester resin, the isocyanate curing agent, and the drier blown into the gas mixing bottle (3) respectively, so that the concentration ratio of the hydroxy acrylic resin, the linear saturated polyester resin, the isocyanate curing agent, and the drier blown into the gas mixing bottle (3) is 40:10:40:

1.

8. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that When performing a one-stage spraying mode, the nozzle of the jet reactor (4) is 100-130 mm away from the surface to be repaired. When performing a two-stage spraying mode, the nozzle of the jet reactor (4) is 80-110 mm away from the surface to be repaired.

9. Offshore wind turbine blade plasma spray repair apparatus according to claim 1, characterized in that Further comprising a rack and a moving device; The gas bottle (1), the gas washing bottle group, the gas mixing bottle (3), the jet reactor (4), the power supply (5), and the controller (7) are installed on the rack; The moving device is connected with the rack and configured to drive the rack to move; The controller (7) is electrically connected with the moving device.

10. Offshore wind turbine blade plasma spray repair apparatus according to claim 9, characterized in that The moving device is a drone.

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