A transformer oil tank inner wall anticorrosion spraying equipment

Abstract

The utility model belongs to transformer oil tank production equipment field, propose a kind of transformer oil tank inner wall anticorrosion spraying equipment, including spray gun, the gas source supply side of spray gun is provided with the gas source pump station being connected with spray gun by gas pipe, the coating supply side of spray gun is provided with the coating pump station being connected with spray gun by coating pipe, the spray outlet end of spray gun is provided with lengthening pipe, the front end outer wall of lengthening pipe is provided with detachable spray head assembly, spray head assembly includes threaded connection section, the front end of threaded connection section is provided with head pipe, the inside of head pipe is provided with the blind hole being communicated with lengthening pipe, the side of head pipe is provided with flat type ware, the thickness of flat type ware is 1 / 5 of head pipe diameter, the inside of flat type ware is provided with multiple spray orifices being communicated with blind hole. The utility model design is reasonable, it is favorable to reduce spraying difficulty, it is favorable to improve spraying effect and it is favorable to improve operating efficiency, suitable for large-scale promotion.

Description

Technical Field

[0001] This utility model belongs to the field of transformer oil tank production equipment, and in particular relates to a transformer oil tank inner wall anti-corrosion spraying equipment. Background Technology

[0002] Oil-immersed transformers mainly consist of the transformer body, oil tank, cooling system, protection system, and outgoing line system. The oil tank is typically welded from steel plates and filled with transformer oil. It provides a sealed space for the core, windings, and other components, serving as insulation and heat dissipation, while also protecting the internal components from external environmental influences. Applying anti-corrosion coating to the oil tank reduces corrosion and peeling of the transformer materials and also helps ensure the insulation performance and breakdown resistance of the internal cells.

[0003] Large transformer tanks have a large volume, and anti-corrosion coatings are generally applied after the tank is formed. However, existing paint spray guns have limited spraying distances, such as the paint spray gun for heavy-duty anti-corrosion coatings disclosed in existing patent CN203990996U and another paint spray gun disclosed in existing patent CN209255036U. This increases the difficulty of anti-corrosion spraying. Furthermore, since transformer tanks also use a hollow design in the heat dissipation fins, the spraying effect on the inner side of the fins by existing spraying equipment needs improvement. Secondly, many spray guns use a canned paint structure installed on the spray gun, which has a limited paint volume. However, the area to be sprayed on the inner wall of the tank is large, which requires multiple layers of canned paint to be replaced, affecting work efficiency. Utility Model Content

[0004] This utility model addresses the technical problems existing in the above-mentioned spraying equipment for spraying coatings on the inner wall of oil tanks, and proposes a transformer oil tank inner wall anti-corrosion spraying equipment that is reasonably designed, conducive to reducing spraying difficulty, improving spraying effect, and improving work efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a transformer tank inner wall anti-corrosion spraying device, including a spray gun. The air supply side of the spray gun is equipped with an air source pump station connected to the spray gun via an air pipe. The paint supply side of the spray gun is equipped with a paint pump station connected to the spray gun via a paint pipe. An extension tube is provided at the spraying end of the spray gun. The inner hole at the front end of the extension tube is a flared hole. A replaceable nozzle assembly is provided on the outer wall at the front end of the extension tube. The nozzle assembly includes a threaded connection section. A head tube is provided at the front end of the threaded connection section. A blind hole communicating with the extension tube is provided inside the head tube. A flattening device is provided on the side of the head tube. The thickness of the flattening device is 1 / 5 of the diameter of the head tube. Multiple spray channels communicating with the blind hole are provided inside the flattening device. A quick-draining component is provided on the side of the extension tube. The quick-draining component includes a telescopic core located in the extension tube and the blind hole. A pull-out head is provided at the end of the telescopic core.

[0006] Preferably, the flattening device has a right-angled trapezoidal structure with its right angle facing the front end of the head tube, and the spray channel is inclinedly arranged inside the flattening device and connected to the two right-angled sides of the flattening device facing outward.

[0007] Preferably, the quick-dredging assembly includes a side tube that is obliquely connected to the extension tube. A spring is provided inside the side tube. One end of the spring contacts and engages with a slider provided on the telescopic core. The other end of the spring is provided with a plug located at the end of the side tube. The plug is provided with a through hole for the telescopic core to move.

[0008] Preferably, a positioning and holding mechanism is included for engaging with the top of the transformer tank.

[0009] Preferably, the positioning and holding mechanism includes a horizontal square tube with a vertical square tube in the middle. A handle is provided on the vertical square tube and connected vertically thereto. The horizontal square tube has downward-facing pressure ports near both ends. The pressure ports are used to cooperate with the top edge of the transformer tank. An anti-tilting component is provided on one side of the pressure port.

[0010] Preferably, the anti-tilt assembly includes an insert plate, the end of which is provided with a pair of first sockets, which are inserted into and cooperate with a second socket opened at the end of the horizontal square tube. A guide bolt is provided on the surface of the insert plate, and the end of the horizontal square tube is provided with an extension section, on which a guide hole is provided to cooperate with the guide bolt.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This utility model provides a transformer tank inner wall anti-corrosion spraying device. By connecting the spray gun to a paint pump station, the frequency of paint replacement can be reduced, meeting the needs of large-area spraying of the transformer tank inner wall and improving spraying efficiency. The use of an extension tube to lengthen the actual spray path length increases the actual spraying length of the spray gun, reducing the difficulty of spraying the transformer tank inner wall. By using a replaceable nozzle assembly installed at the front end of the extension tube, the flat nozzle shape can be used to spray the inner wall of the heat dissipation fins on the transformer tank, improving spraying quality. The use of a quick-dredging component allows for real-time unblocking of the spray path, reducing the probability of blockage. This utility model is reasonably designed, reduces spraying difficulty, improves spraying effect, and increases work efficiency, making it suitable for large-scale promotion. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A front view of a transformer tank inner wall anti-corrosion spraying device provided in an embodiment;

[0015] Figure 2 A partial perspective view of a transformer tank inner wall anti-corrosion spraying device provided in the embodiment;

[0016] Figure 3 A 3D view of the spray gun, extension tube, nozzle assembly, and quick-dredging assembly;

[0017] Figure 4 Cross-sectional view of the extension pipe, nozzle assembly, and quick-drain assembly;

[0018] Figure 5 A perspective view of the positioning and holding mechanism provided in the embodiment;

[0019] Figure 6 for Figure 5 Enlarged schematic diagram of the center positioning and holding mechanism at position A;

[0020] In the above figures: 1. Spray gun; 2. Air source pump station; 3. Paint pump station; 4. Extension pipe; 5. Spray head assembly; 51. Threaded connection section; 52. Head tube; 53. Blind hole; 54. Flat tool; 55. Spray channel; 6. Quick unblocking assembly; 61. Telescopic core; 62. Pull-out head; 63. Side tube; 64. Spring; 65. Slider; 66. Plug; 7. Positioning and holding mechanism; 71. Horizontal square tube; 711. Pressure port; 72. Vertical square tube; 73. Handle; 74. Anti-tilting assembly; 741. Insert plate; 742. First insertion port; 743. Second insertion port; 744. Guide bolt; 745. Extension section; 746. Guide hole; 8. Transformer oil tank. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Examples, such as Figures 1-6 As shown, this utility model provides a transformer oil tank inner wall anti-corrosion spraying device, including a spray gun 1. An air supply pump station 2 is provided on the air supply side of the spray gun 1 and connected to the spray gun 1 via an air pipe. A paint supply pump station 3 is provided on the paint supply side of the spray gun 1 and connected to the spray gun 1 via a paint pipe. An extension pipe 4 is provided at the spraying end of the spray gun 1. The inner hole at the front end of the extension pipe 4 is a trumpet hole, which facilitates the spraying of an umbrella-shaped mist when the nozzle assembly 5 is not attached. A replaceable nozzle assembly 5 is provided on the outer wall at the front end of the extension pipe 4. The nozzle assembly 5 includes a screw... The threaded connecting section 51 has a head tube 52 at its front end. The head tube 52 has a blind hole 53 inside that communicates with the extension tube 4. The head tube 52 has a flattening device 54 on its side. The thickness of the flattening device 54 is 1 / 5 of the diameter of the head tube 52. The flattening device 54 has multiple spray channels 55 inside that communicate with the blind hole 53. The extension tube 4 has a quick-draining component 6 on its side. The quick-draining component 6 includes a telescopic core 61 located in the extension tube 4 and the blind hole 53. The end of the telescopic core 61 has a pull-out head 62.

[0024] Specifically, the air source pump station 2 provides air pressure to the spray gun 1, and the spray gun 1 is connected to the paint pump station 3, which directly supplies paint, reducing the frequency of paint replacement and meeting the needs of large-area spraying of the inner wall of the transformer oil tank 8, thus improving the efficiency of the spraying operation. Furthermore, this invention uses an extension tube 4 to extend the actual movement channel length of the spray, increasing the actual spraying length of the spray gun 1, which helps reduce the difficulty of spraying the inner wall of the transformer oil tank 8, especially for the deeper tanks of large transformers. A replaceable nozzle assembly 5 is installed at the front end of the extension tube 4, and the shape of the flat nozzle 54 allows it to penetrate into the heat dissipation fins on the transformer oil tank 8 to spray the inner wall of the fins, improving the spraying quality and the overall corrosion resistance. Finally, a quick-dredging assembly 6 can clear the spray path in real time, reducing the probability of blockage.

[0025] To improve the coating effect on the inner wall of the heat sink fins, this invention not only reduces the thickness of the flat nozzle 54 to ensure that the spray from the nozzle channel 55 has reasonable pressure, but also designs the distribution of the nozzle channel 55. For example, the flat nozzle 54 is a right-angled trapezoidal structure with its right angle facing the front end of the head tube 52. The nozzle channel 55 is inclinedly arranged inside the flat nozzle 54 and connected to the two right-angled sides of the flat nozzle 54 facing outward. By using the inclined nozzle channel 55, the spraying efficiency can be improved, and the spray from multiple directions of the flat nozzle 54 can effectively increase the contact probability between the spray and the inside of the heat sink fins, thereby ensuring the coating effect of the spray gun 1 on the inside of the heat sink fins.

[0026] To improve the unblocking performance of the rapid unblocking component 6, the rapid unblocking component 6 provided by this utility model includes a side tube 63 that is obliquely connected to the extension tube 4. A spring 64 is installed inside the side tube 63. One end of the spring 64 contacts and engages with a slider 65 installed on the telescopic core 61. The side tube 63 has a fine hole for the telescopic core 61 to move, and a coarse hole at the rear of the fine hole. The coarse hole allows the slider to move and the spring 64 to extend and retract. The other end of the spring 64 is provided with a plug 66 located at the end of the side tube 63. The plug 66 has a through hole for the telescopic core 61 to move. In this way, by manually controlling the pull head 62, the telescopic core 61 can make corresponding displacements in the extension tube 4 and the blind hole 53. In addition, the elastic support of the spring 64 on the slider 65 allows the slider 65 and the telescopic core 61 to move synchronously, thereby realizing reciprocating motion. During the reciprocating motion of the telescopic core 61, the spray gun 1 applies pressure to achieve the unblocking function. It should be noted that the diameter of the telescopic core 61 is much smaller than the inner diameter of the extension tube 4 and the blind hole 53, so the telescopic core 61 will not significantly affect the spray flow rate.

[0027] To facilitate the spraying of the inner wall of the large transformer oil tank 8, this utility model provides a positioning and holding mechanism 7 that can be used to cooperate with the top of the transformer oil tank 8. By changing the specific position of the positioning and holding mechanism 7 on the transformer, the length of the transformer can be actually divided into different length spans. When spraying the deeper part of the transformer oil tank 8, the worker can place one hand on the positioning and holding mechanism 7, which provides an effective support position and helps to ensure work efficiency.

[0028] Specifically, the positioning and holding mechanism 7 provided by this utility model includes a horizontal square tube 71, a vertical square tube 72 in the middle of the horizontal square tube 71, and a handle 73 vertically connected to the vertical square tube 72. The horizontal square tube 71 has downward-facing pressure ports 711 near both ends, which are used to engage with the top edge of the transformer tank 8. An anti-tilting component 74 is provided on one side of the pressure port 711. The pressure ports 711 can be engaged with the top edge of the transformer tank 8, and the two pressure ports 711 establish a reasonable support span on the transformer tank 8. The handle 73 provides a handheld position for easy gripping. In this way, the worker can hold the handle 73 with one hand and operate the spray gun 1 with the other. When spraying the bottom of the transformer, a certain angle of bending over can be made to ensure the stability of the spraying operation.

[0029] Furthermore, the anti-tilt assembly 74 provided by this utility model includes an insert plate 741. The end of the insert plate 741 is provided with a pair of first sockets 742. The first sockets 742 are inserted into and cooperate with the second sockets 743 opened at the end of the horizontal square tube 71. A guide bolt 744 is provided on the plate surface of the insert plate 741. The end of the horizontal square tube 71 is provided with an extension section 745. A guide hole 746 that cooperates with the guide bolt 744 is provided on the extension section 745. The guide bolt 744 and guide hole 746 work together to prevent the insert plate 741 from falling off the end of the horizontal square tube 71, thus preventing loss. The insert plate 741 is inserted into the end of the horizontal square tube 71, and the first socket 742 and the second socket 743 form a mating connection. The end of the insert plate 741 is then locked onto the lower surface of the top skirt of the transformer, thereby forming a clamping relationship between the insert plate 741 and the horizontal square tube 71 on the top of the transformer. This ensures the stability of the worker supporting part of their body weight on the positioning and holding mechanism 7, which is beneficial to ensuring the efficiency of the spraying operation. The clamping relationship between the insert plate 741 and the horizontal square tube 71 does not affect the horizontal movement of the horizontal square tube 71.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A transformer tank inner wall anti-corrosion spraying device, comprising a spray gun, wherein an air source pump station is provided on the air supply side of the spray gun and connected to the spray gun via an air pipe, characterized in that, The paint supply side of the spray gun is equipped with a paint pump station connected to the spray gun via a paint pipe. The spray gun's discharge end is equipped with an extension tube. The inner hole at the front end of the extension tube is a flared hole. The outer wall at the front end of the extension tube is equipped with a replaceable nozzle assembly. The nozzle assembly includes a threaded connection section. The front end of the threaded connection section is equipped with a head tube. The head tube has a blind hole communicating with the extension tube. A flattening device is provided on the side of the head tube. The thickness of the flattening device is 1 / 5 of the head tube diameter. The flattening device has multiple spray channels communicating with the blind hole. A quick-draining component is provided on the side of the extension tube. The quick-draining component includes a telescopic core located in the extension tube and the blind hole. The end of the telescopic core is equipped with a pull-out head.

2. The anti-corrosion spraying equipment for the inner wall of a transformer tank according to claim 1, characterized in that, The flattened device has a right-angled trapezoidal structure with its right angle facing the front end of the head tube. The spray channel is inclinedly arranged inside the flattened device and connected to the two right-angled sides of the flattened device facing outward.

3. The anti-corrosion spraying equipment for the inner wall of a transformer tank according to claim 1, characterized in that, The rapid unblocking assembly includes a side tube that is inclinedly connected to the extension tube. A spring is installed inside the side tube. One end of the spring contacts and engages with a slider installed on the telescopic core. The other end of the spring is provided with a plug located at the end of the side tube. The plug is provided with a through hole for the telescopic core to move.

4. A transformer tank inner wall anti-corrosion spraying equipment according to any one of claims 1-3, characterized in that, Includes a positioning and holding mechanism for engaging with the top of the transformer tank.

5. The anti-corrosion spraying equipment for the inner wall of a transformer tank according to claim 4, characterized in that, The positioning and holding mechanism includes a horizontal square tube with a vertical square tube in the middle. A handle is provided on the vertical square tube and connected vertically thereto. The horizontal square tube has downward-facing pressure ports near both ends. The pressure ports are used to cooperate with the top edge of the transformer tank. An anti-tilting component is provided on one side of the pressure port.

6. The anti-corrosion spraying equipment for the inner wall of a transformer tank according to claim 5, characterized in that, The anti-tilt assembly includes an insert plate, the end of which is provided with a pair of first sockets, which are inserted into and cooperate with a second socket opened at the end of the horizontal square tube. A guide bolt is provided on the surface of the insert plate, and the end of the horizontal square tube is provided with an extension section, on which a guide hole is provided to cooperate with the guide bolt.

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