Surface spraying device for densely-arranged small-diameter long tube panel and spraying method of surface spraying device

Abstract

The invention provides a surface spraying device for densely-arranged small-diameter long tube panels and a spraying method of the surface spraying device, and belongs to the technical field of spraying. The problems that in the prior art, due to the fact that the spraying area is large and is of a densely-arranged small-diameter long pipe structure, the width of a spraying gun can only cover one pipe during spraying, manual spraying is limited by arm extension and physical ability, the number of lap joint areas is large, deformation is prone to occurring due to long-time spraying operation, and the spraying effect is poor are solved. The efficiency is low; and the thickness and the uniformity of a paint film are difficult to guarantee. The device comprises a gantry frame, linear ball screw sliding table guide rails, an electric trolley and a track, the two linear ball screw sliding table guide rails are installed at the top of the gantry frame and symmetrically arranged in a staggered mode, the two ends of the bottom of the gantry frame are both installed on the electric trolley, and the two linear ball screw sliding table guide rails are installed on the track. The electric trolley is installed on the two rails in a sliding mode, and a spray gun is installed on a sliding table on the linear ball screw sliding table guide rail. The device is mainly used for spraying the heat absorber tube panel.

Description

Technical Field

[0001] The invention belongs to the field of spraying technology, and particularly relates to a surface spraying device and a spraying method for closely packed small-diameter long tube screens. Background Art

[0002] With the development of renewable energy, the application of solar thermal power generation tower molten salt absorber is becoming more and more extensive. The absorber is a structure of headers at both ends and a middle absorber tube. There are elbows at the connection positions between the two ends of the absorber tube and the header. The middle straight tube part needs to be sprayed with absorber paint. After being assembled into a screen, spraying is carried out. The spraying area is a densely packed small-diameter long tube sheet. The spraying of absorber paint has very high requirements for the thickness of the paint film, which is required to be controlled between 75-100μm. Therefore, there are strict requirements for the spray gun distance, gun speed, and the stability of the compressed air pressure during spraying. Since the spraying area is large and is a densely packed small-diameter long tube structure, and the width of the spray gun during spraying can only cover one tube, manual spraying is limited by arm span and physical strength, there are many overlap areas, and long-term spraying operations are prone to deformation, which is not only inefficient but also difficult to ensure the thickness and uniformity of the paint film. At the same time, due to the structural limitations of the absorber, conventional automatic spraying equipment is difficult to achieve absorber paint spraying. Summary of the invention

[0003] In view of this, the present invention aims to propose a surface spraying device and a spraying method for a closely packed small-diameter long tube screen, so as to solve the problems in the prior art that the spraying area is large and the structure is closely packed small-diameter long tubes, and the width of the spray gun during spraying can only cover one tube, manual spraying is limited by arm span and physical strength, there are many overlapping areas, and deformation is prone to occur during long-term spraying operations, which not only has low efficiency but also is difficult to ensure the thickness and uniformity of the paint film.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A surface spraying device for closely packed small-diameter long tube screens comprises a gantry frame, a linear ball screw slide rail, an electric trolley and a track. Two linear ball screw slide rails are installed on the top of the gantry frame. The two linear ball screw slide rails are staggered and symmetrically arranged. Both ends of the bottom of the gantry frame are installed on the electric trolley. The electric trolley is slidably installed on two tracks. A spray gun is installed on the slide on the linear ball screw slide rail.

[0006] Furthermore, the support rods at the four corners of the gantry frame are all retractable support rods.

[0007] Furthermore, a high-pressure paint storage tank is provided between the spray gun and the compressed air source.

[0008] Furthermore, the high-pressure paint storage tank is arranged on the electric trolley.

[0009] Furthermore, the spray gun is mounted on the slide by bolts.

[0010] A spraying method for a surface spraying device for closely packed small-diameter long tube panels, comprising the following steps:

[0011] Step 1: Lay the tracks on both sides of the absorber tube panel;

[0012] Step 2: Install the spray gun on the linear ball screw slide rail, and then install the linear ball screw slide rail on the top of the gantry frame designed according to the width and height of the absorber tube panel;

[0013] Step 3: Then install the support rods of the gantry frame on the electric trolley on the track;

[0014] Step 4: Adjust the travel speed of the electric trolley to the gun travel speed required for spraying, and control the two electric trolleys to move synchronously through the controller so that the spray gun can reciprocate along the direction of the tube screen.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs two sets of electric trolleys and matching tracks, adjusts the speed to the gun speed required for spraying, controls the trolley to move back and forth along the length direction of the tube screen by a remote control during spraying, ensures the stability of the gun speed, designs a gantry frame, and connects the frame support rods to the trolleys on both sides. The support rods are height-adjustable to facilitate adjustment of the spray gun distance, and the top crosses the tube screen to achieve full coverage of the spraying area. A linear ball screw slide rail is designed and fixed to the top of the gantry frame, and the spray gun is fixed on the guide rail slide to ensure the spray gun distance. The spray gun is displaced in the width direction of the tube screen by turning the handle, and is used to switch the spraying pipe. A high-pressure paint storage tank is designed between the compressed air and the spray gun and is placed on the electric trolley platform, which is connected to the air intake and the spray gun to ensure the stability of the pressure during spraying, thereby reducing the weight of the spray gun and avoiding frequent filling of paint to affect the spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic structural diagram of a surface spraying device for closely packed small-diameter long tube screens according to the present invention;

[0018] Figure 2 Schematic diagram of the absorber tube panel structure Figure 1 ;

[0019] Figure 3 Schematic diagram of the absorber tube panel structure Figure 2 ,

[0020] 1-Gantry frame, 2-Linear ball screw slide guide, 3-Electric trolley, 4-Track, 5-Support rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0022] See also Figure 1-3 This embodiment is described as a surface spraying device for closely packed small diameter long tube screens, characterized in that it includes a gantry frame 1, a linear ball screw slide guide 2, an electric trolley 3 and a track 4, two linear ball screw slide guides 2 are installed on the top of the gantry frame 1, and the two linear ball screw slide guides 2 are staggered and symmetrically arranged, both ends of the bottom of the gantry frame 1 are installed on the electric trolley 3, and the electric trolley 3 is slidably installed on two tracks 4, and a spray gun is installed on the slide on the linear ball screw slide guide 2, and the support rods 5 at the four corners of the gantry frame 1 are all retractable support rods, and the spray gun is installed on the slide by bolts, and a high-pressure paint storage tank is provided between the spray gun and the compressed air source, and the high-pressure paint storage tank is arranged on the electric trolley 3.

[0023] Lay the track 4 on both sides of the absorber tube panel, install the spray gun on the linear ball screw slide guide 2, and then install the linear ball screw slide guide 2 on the top of the gantry frame 1 designed according to the width and height of the absorber tube panel, and then install the support rod 5 of the gantry frame 1 on the electric trolley 3 on the track 4, adjust the travel speed of the electric trolley 3 to the gun travel speed required for spraying, and control the two electric trolleys 3 to move synchronously through the controller so that the spray gun can reciprocate along the tube panel direction.

[0024] In this embodiment, a heat absorber tube panel with a tube diameter of Φ31.75mm, a length of 14000mm, a tube intercept of 34mm, a net gap between tubes of 2.25mm, 69 tubes per tube panel, and a tube panel width of 2344mm is taken as an example. The main reason for the difficulty in spraying heat-absorbing paint for the heat absorber is that the spray gun distance, the gun speed, and the stability of the compressed air pressure during spraying are high and difficult to control. The spraying area is large and is a densely packed small-diameter long tube structure, and the width of the spray gun during spraying can only cover one tube. Manual spraying is limited by arm span and physical fitness, there are many overlapping areas, and long-term spraying operations are prone to deformation, which is not only inefficient but also difficult to ensure the thickness and uniformity of the paint film. In addition, due to the structural limitations of the heat absorber, conventional automatic spraying equipment is difficult to achieve spraying of heat-absorbing paint; therefore, the following measures are taken to ensure the spraying quality, and two sets of electric trolleys 3 and accessories are designed. Set track 4, adjust the speed to the gun speed required for spraying, control the trolley to move back and forth along the length of the tube screen by remote control during spraying to ensure stable gun speed, design gantry frame 1, frame support rod 5 is connected to the trolleys on both sides, support rod 5 is height-adjustable to adjust the spray gun distance, the top crosses the tube screen to achieve full coverage of the spraying area, design linear ball screw slide rail 2, fixed on the top of gantry frame 1, fix the spray gun on the guide rail slide to ensure the spray gun distance, and the spray gun is displaced along the width of the tube screen by turning the handle, which is used to switch the spraying pipe, design a high-pressure paint storage tank between compressed air and spray gun and place it on the electric trolley platform, connect the air intake and spray gun to ensure stable pressure during spraying, reduce the weight of the spray gun and avoid frequent filling of paint to affect the spraying efficiency. The above measures ensure the spraying quality of the heat absorber heat absorbing paint and improve the spraying efficiency.

[0025] Furthermore, a spraying method for a surface spraying device of a closely packed small-diameter long tube panel comprises the following steps:

[0026] Step 1: Lay the track 4 on both sides of the absorber tube panel;

[0027] Step 2: Install the spray gun on the linear ball screw slide rail 2, and then install the linear ball screw slide rail 2 on the top of the gantry frame 1 designed according to the width and height of the absorber tube panel;

[0028] Step 3: Then install the support rod 5 of the gantry frame 1 on the electric trolley 3 on the track 4;

[0029] Step 4: Adjust the travel speed of the electric trolley 3 to the spray gun travel speed required for spraying, and control the two electric trolleys 3 to move synchronously through the controller so that the spray gun can reciprocate along the tube panel direction.

[0030] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A surface spraying device for closely packed small diameter long tube panels, characterized in that: The invention comprises a gantry frame (1), a linear ball screw slide rail (2), an electric trolley (3) and a track (4); two linear ball screw slide rails (2) are installed on the top of the gantry frame (1); the two linear ball screw slide rails (2) are arranged in a staggered and symmetrical manner; both ends of the bottom of the gantry frame (1) are installed on the electric trolley (3); the electric trolley (3) is slidably installed on the two tracks (4); and a spray gun is installed on the slide on the linear ball screw slide rail (2).

2. A surface spraying device for closely packed small diameter long tube panels according to claim 1, characterized in that: The support rods (5) at the four corners of the gantry frame (1) are all retractable support rods.

3. The surface spraying device for closely packed small diameter long tube panels according to claim 1, characterized in that: A high-pressure paint storage tank is arranged between the spray gun and the compressed air source.

4. A surface spraying device for closely packed small diameter long tube panels according to claim 3, characterized in that: The high-pressure paint storage tank is arranged on the electric trolley (3).

5. The surface spraying device for closely packed small diameter long tube panels according to claim 1, characterized in that: The spray gun is mounted on the slide by bolts.

6. A spraying method for a surface spraying device for closely packed small diameter long tube panels according to any one of claims 1 to 6, characterized in that: It includes the following steps: Step 1: Lay the track (4) on both sides of the absorber tube panel; Step 2: Install the spray gun on the linear ball screw slide rail (2), and then install the linear ball screw slide rail (2) on the top of the gantry frame (1) designed according to the width and height of the absorber tube panel; Step 3: Then install the support rod (5) of the gantry frame (1) on the electric trolley (3) on the track (4); Step 4: Adjust the travel speed of the electric trolley (3) to the travel speed required for spraying, and control the two electric trolleys (3) to move synchronously through the controller, so that the spray gun can reciprocate along the direction of the tube screen.

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