Electric arc automatic spraying control method for outer wall of wind power tower

Abstract

The invention provides an electric arc automatic spraying control method for the outer wall of a wind power tower. The electric arc automatic spraying control method comprises the following steps that structural parameters of the wind power tower and structural parameters of electric arc automatic spraying equipment are obtained; obtaining spraying parameters of the automatic arc spraying equipment; the wind power tower barrel is equally divided into n sections in the axis direction of the wind power tower barrel; based on the spraying parameters and the structural parameters of the wind power tower drum, the spraying time of each wind power tower drum section and the working time of a spray gun of the automatic arc spraying equipment are determined; according to the structural parameters of the wind power tower drum and the structural parameters of the electric arc automatic spraying equipment, the moving distance of the electric arc automatic spraying equipment during spraying of the segmented wind power tower drum is determined; determining the moving speed of a spray gun of the automatic arc spraying equipment according to the spraying time of the sections of the wind power tower and the working time of the spray gun of the automatic arc spraying equipment, and controlling the automatic arc spraying equipment to work according to the moving speed of the spray gun and the moving distance of the automatic arc spraying equipment.

Description

Technical Field

[0001] The invention relates to a spraying control method, in particular to an arc automatic spraying control method for an outer wall of a wind power tower. Background Art

[0002] The outer wall of the wind turbine tower needs to be coated before it can be put into actual application scenarios. The coating is used to protect the wind turbine tower from erosion. In the prior art, the outer wall of the wind turbine tower is generally sprayed manually. This method is inefficient and has a large loss of raw materials, which makes the cost high. More importantly, the existing manual method often has uneven coating thickness, which affects the appearance quality on the one hand and easily causes pitting corrosion on the other hand.

[0003] In order to solve this problem, automatic spraying methods have been gradually proposed, such as using arc spraying equipment to achieve automatic spraying. The arc spraying equipment has two spray guns for simultaneous spraying. However, although the efficiency of the arc spraying gun can be improved, if the moving speed of the arc spraying gun and the overall moving position of the arc spraying equipment cannot be accurately controlled, there will still be problems of unevenness in manual spraying and the efficiency cannot be guaranteed. Since the outer surface of the wind turbine tower is a conical structure, the control method of the prior art cannot accurately achieve the above-mentioned accurate control.

[0004] Therefore, in order to solve this technical problem, it is urgent to propose a new technical means. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a method for controlling automatic arc spraying of the outer wall of a wind turbine tower. The overall moving position of the arc spraying equipment and the moving speed of the spray gun are determined based on the parameters of the arc spraying equipment itself and the structural parameters of the wind turbine tower, thereby achieving precise control of the arc spraying equipment, ensuring the spraying quality of the outer wall of the wind turbine tower, and effectively improving the spraying efficiency.

[0006] The present invention provides a method for controlling the automatic arc spraying of the outer wall of a wind turbine tower, wherein the wind turbine tower is controlled to rotate around its own axis, and an arc spraying device for spraying the outer wall of the wind turbine tower is arranged outside the wind turbine tower and can be controlled to move along the axis direction of the wind turbine tower;

[0007] The control method comprises the following steps:

[0008] Obtain the structural parameters of the wind turbine tower and the structural parameters of the arc automatic spraying equipment;

[0009] Obtain spraying parameters of arc automatic spraying equipment;

[0010] Divide the wind turbine tower into n segments along its axis;

[0011] Determine the spraying time of each wind turbine tower segment and the working time of the spray gun of the electric arc automatic spraying device based on the spraying parameters and the structural parameters of the wind turbine tower, and determine the moving distance of the electric arc automatic spraying device when spraying the segmented wind turbine tower according to the structural parameters of the wind turbine tower and the structural parameters of the electric arc automatic spraying device;

[0012] The moving speed of the spray gun of the arc automatic spray equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the arc automatic spray equipment, and the operation of the arc automatic spray equipment is controlled according to the moving speed of the spray gun and the moving distance of the arc automatic spray equipment.

[0013] Furthermore, the moving speed of the spray gun of the automatic arc spray equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the automatic arc spray equipment, including:

[0014] According to the spraying time of the wind turbine tower segment, the rotation speed of the i-th tower segment and the working time of the spray gun of the arc automatic spraying equipment are determined:

[0015]

[0016] Where: V pa_i is the rotation speed of the outer wall of the i-th wind turbine tower, d i is the diameter of the i-th wind turbine tower, T i The time required to complete the spraying of the outer wall of the i-th section of the wind turbine tower;

[0017]

[0018] Where: k is the swing width of the spray gun of the arc automatic spraying equipment; t i is the working time of the spray gun for spraying the outer wall of the i-th section of the wind turbine tower;

[0019] Where: V gu_i is the moving speed of the spray gun when spraying the outer wall of the i-th section of the wind turbine tower, and λ is the length of the spray gun.

[0020] Further, the moving distance of the arc automatic spraying equipment is determined by the following method:

[0021] Determine the position Z of the arc automatic spraying equipment when it completes spraying the outer wall of the wind turbine tower i-1 ;

[0022] Determine the spraying distance Z of the arc automatic spraying equipment when spraying the i+1th section i+1 ;

[0023] The moving distance of the arc automatic spraying equipment when spraying the i+1th section is S: S = Z i-Z i-1 ;

[0024] in: When i=1, it means that the wind turbine tower starts to be sprayed:

[0025]

[0026]

[0027] Among them: b represents the distance between the spray gun outlet of the automatic arc spraying equipment and the outer wall of the wind turbine tower, H1 represents the distance between the lowest point of the front end of the wind turbine tower and the ground, H2 represents the distance between the lowest point of the rear end of the wind turbine tower and the ground, H3 represents the height between the spray gun outlet and the ground, d represents the diameter of the small end of the wind turbine tower, and C represents the overall length of the wind turbine tower.

[0028] Furthermore, the diameter d of the i-th wind turbine tower is determined by the following method: i :

[0029] Wherein, D represents the diameter of the large end of the wind turbine tower.

[0030] Furthermore, the time required for spraying the outer wall of the i-th wind turbine tower is T i Determined by:

[0031]

[0032] Where: Q is the spraying efficiency of the spray gun, M i The coating required for the i-th section of the wind turbine tower;

[0033] Among them, s i is the outer wall surface area of ​​the i-th section of the wind turbine tower, δ is the coating thickness of the wind turbine tower, ρ is the theoretical density of the coating, θ is the ratio of the actual density of the coating to the theoretical density, and ξ is the deposition rate of the coating.

[0034] The beneficial effects of the present invention are as follows: the overall moving position of the arc spraying equipment and the moving speed of the spray gun are determined based on the parameters of the arc spraying equipment itself and the structural parameters of the wind turbine tower, thereby enabling precise control of the arc spraying equipment, ensuring the spraying quality of the outer wall of the wind turbine tower, and effectively improving the spraying efficiency, and saving spraying materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0036] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below:

[0039] The present invention provides a method for controlling the automatic arc spraying of the outer wall of a wind turbine tower, wherein the wind turbine tower is controlled to rotate around its own axis, and the arc spraying equipment for spraying the outer wall of the wind turbine tower is arranged outside the wind turbine tower and can be controlled to move along the axis direction of the wind turbine tower; wherein the wind turbine tower is rotated around its own axis by an existing method, and the automatic arc spraying equipment is arranged on a guide rail and controlled to move along the guide rail by an existing method, and the guide rail is parallel to the axis of the wind turbine tower, which are all existing technologies and will not be elaborated here;

[0040] The control method comprises the following steps:

[0041] Obtain the structural parameters of the wind turbine tower and the structural parameters of the arc automatic spraying equipment;

[0042] Obtain spraying parameters of arc automatic spraying equipment;

[0043] Divide the wind turbine tower into n segments along its axis;

[0044] Determine the spraying time of each wind turbine tower segment and the working time of the spray gun of the electric arc automatic spraying device based on the spraying parameters and the structural parameters of the wind turbine tower, and determine the moving distance of the electric arc automatic spraying device when spraying the segmented wind turbine tower according to the structural parameters of the wind turbine tower and the structural parameters of the electric arc automatic spraying device;

[0045] The moving speed of the spray gun of the arc automatic spray equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the arc automatic spray equipment, and the arc automatic spray equipment is controlled according to the moving speed of the spray gun and the moving distance of the arc automatic spray equipment. Through the above method, the overall moving position of the arc spray equipment and the moving speed of the spray gun are determined based on the combination of the arc spray equipment's own parameters and the structural parameters of the wind turbine tower, so that the arc spray equipment can be accurately controlled, ensuring the spraying quality of the outer wall of the wind turbine tower, and effectively improving the spraying efficiency, and saving spraying materials.

[0046] In this embodiment, the moving speed of the spray gun of the automatic arc spraying equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the automatic arc spraying equipment, which specifically includes:

[0047] According to the spraying time of the wind turbine tower segment, the rotation speed of the i-th tower segment and the working time of the spray gun of the arc automatic spraying equipment are determined:

[0048]

[0049] Where: V pa_i is the rotation speed of the outer wall of the i-th wind turbine tower, d i is the diameter of the i-th wind turbine tower, T i The time required to complete the spraying of the outer wall of the i-th section of the wind turbine tower;

[0050]

[0051] Where: k is the swing width of the spray gun of the arc automatic spraying equipment; t i is the working time of the spray gun for spraying the outer wall of the i-th section of the wind turbine tower;

[0052] Where: V gu_i is the moving speed of the spray gun when spraying the outer wall of the i-th section of the wind turbine tower, and λ is the length of the spray gun.

[0053] In this embodiment, the moving distance of the arc automatic spraying equipment is determined by the following method:

[0054] Determine the position Z of the arc automatic spraying equipment when it completes spraying the outer wall of the wind turbine tower i-1 ;

[0055] Determine the spraying distance Z of the arc automatic spraying equipment when spraying the i+1th section i+1 ;

[0056] The moving distance of the arc automatic spraying equipment when spraying the i+1th section is S: S = Z i -Z i-1 ;

[0057] in: When i=1, it means that the wind turbine tower starts to be sprayed:

[0058]

[0059]

[0060] Among them: b represents the distance between the spray gun outlet of the arc automatic spraying equipment and the outer wall of the wind turbine tower, H1 represents the distance between the lowest point of the front end of the wind turbine tower and the ground, H2 represents the distance between the lowest point of the rear end of the wind turbine tower and the ground, H3 represents the height between the spray gun outlet and the ground, d represents the diameter of the small end of the wind turbine tower, and C represents the overall length of the wind turbine tower. The front end in the above refers to the large end of the wind turbine tower, and the rear end refers to the small end of the wind turbine tower. Since the wind turbine tower is a conical structure, its diameter has a large end and a small end.

[0061] In this embodiment, the diameter d of the i-th section of the wind turbine tower is determined by the following method:i :

[0062] Where D represents the diameter of the large end of the wind turbine tower. Since the wind turbine tower is a conical structure, the diameter is different at each different position along its axis. Even if it is segmented, the diameter at different positions of each segment is also different. Therefore, through the above method, the diameter of each segment is equivalently calculated, so as to facilitate precise control. That is to say, the diameter d i is an equivalent diameter.

[0063] In this embodiment, the time required for the spraying of the outer wall of the i-th wind turbine tower to be completed is T i Determined by:

[0064]

[0065] Where: Q is the spraying efficiency of the spray gun, M i The coating required for the i-th section of the wind turbine tower;

[0066] Among them, s i is the outer wall surface area of ​​the i-th section of the wind turbine tower, δ is the coating thickness of the wind turbine tower, ρ is the theoretical density of the coating, θ is the ratio of the actual density of the coating to the theoretical density, and ξ is the deposition rate of the coating.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for controlling the automatic arc spraying of the outer wall of a wind power tower, characterized in that: The wind turbine tower is controlled to rotate around its own axis, and the arc spraying equipment used to spray the outer wall of the wind turbine tower is arranged outside the wind turbine tower and can be controlled to move along the axis direction of the wind turbine tower; The control method comprises the following steps: Obtain the structural parameters of the wind turbine tower and the structural parameters of the arc automatic spraying equipment; Obtain spraying parameters of arc automatic spraying equipment; Divide the wind turbine tower into n segments along its axis; Determine the spraying time of each wind turbine tower segment and the working time of the spray gun of the electric arc automatic spraying device based on the spraying parameters and the structural parameters of the wind turbine tower, and determine the moving distance of the electric arc automatic spraying device when spraying the segmented wind turbine tower according to the structural parameters of the wind turbine tower and the structural parameters of the electric arc automatic spraying device; The moving speed of the spray gun of the arc automatic spray equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the arc automatic spray equipment, and the operation of the arc automatic spray equipment is controlled according to the moving speed of the spray gun and the moving distance of the arc automatic spray equipment.

2. The method for controlling the automatic arc spraying of the outer wall of a wind power tower according to claim 1 is characterized in that: The moving speed of the spray gun of the arc automatic spray equipment is determined according to the spraying time of the wind turbine tower sections and the working time of the spray gun of the arc automatic spray equipment, including: According to the spraying time of the wind turbine tower segment, the rotation speed of the i-th tower segment and the working time of the spray gun of the arc automatic spraying equipment are determined: Where: V pa_i is the rotation speed of the outer wall of the i-th wind turbine tower, d i is the diameter of the i-th wind turbine tower, T i The time required to complete the spraying of the outer wall of the i-th section of the wind turbine tower; Where: k is the swing width of the spray gun of the arc automatic spraying equipment; t i is the working time of the spray gun for spraying the outer wall of the i-th section of the wind turbine tower; Where: V gu_i is the moving speed of the spray gun when spraying the outer wall of the i-th section of the wind turbine tower, and λ is the length of the spray gun.

3. The method for controlling the automatic arc spraying of the outer wall of a wind power tower according to claim 1 is characterized in that: The moving distance of the arc automatic spraying equipment is determined by the following method: Determine the position Z of the arc automatic spraying equipment when it completes spraying the outer wall of the wind turbine tower i-1 ; Determine the spraying distance Z of the arc automatic spraying equipment when spraying the i+1th section i+1 ; The moving distance of the arc automatic spraying equipment when spraying the i+1th section is S: S = Z i -Z i-1 ; in: When i=1, it means that the wind turbine tower starts to be sprayed: Among them: b represents the distance between the spray gun outlet of the automatic arc spraying equipment and the outer wall of the wind turbine tower, H1 represents the distance between the lowest point of the front end of the wind turbine tower and the ground, H2 represents the distance between the lowest point of the rear end of the wind turbine tower and the ground, H3 represents the height between the spray gun outlet and the ground, d represents the diameter of the small end of the wind turbine tower, and C represents the overall length of the wind turbine tower.

4. The method for controlling the automatic arc spraying of the outer wall of a wind power tower according to claim 2 or 3, characterized in that: The diameter d of the i-th section of the wind turbine tower is determined by the following method: i : Wherein, D represents the diameter of the large end of the wind turbine tower.

5. The method for controlling the automatic arc spraying of the outer wall of a wind power tower according to claim 2 is characterized in that: The time required for the i-th section of wind turbine tower outer wall spraying to complete T i Determined by: Where: Q is the spraying efficiency of the spray gun, M i The coating required for the i-th section of the wind turbine tower; Among them, s i is the outer wall surface area of ​​the i-th section of the wind turbine tower, δ is the coating thickness of the wind turbine tower, ρ is the theoretical density of the coating, θ is the ratio of the actual density of the coating to the theoretical density, and ξ is the deposition rate of the coating.

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