An anti-corrosion device for pipelines in a port tank farm and its usage method

Abstract

The present invention relates to the technical field of pipeline anti-corrosion, and particularly to an anti-corrosion device for pipelines in a port tank area and a method for using the same. The device includes an external pipe screw-in assembly and an internal pipe screw-in assembly. In the present invention, the abutting friction plate is unfolded to adapt to the diameter of the pipeline. The larger the unfolding distance of the abutting friction plate, the larger the pipeline diameter, and the more coating material is required to be sprayed. The flow rate of the hydraulic oil at the flow control valve is adjusted by the moving distance of the abutting friction plate, thereby reducing the extending speed of the main hydraulic push rod, and thus reducing the rotational linear speed of the fine-tuning assembly, avoiding the excessive in-pipe screw-in speed from affecting the thickness of the anti-corrosion layer. During the advancement of the push rod through the cooperation of the first ball and the screw-in thread, the push rod rotates, so that the abutting friction plate and the fine-tuning assembly rotate, avoiding the inclination of the push rod and preventing the inclination of the screw-in angle of the fine-tuning assembly, which may affect the spraying angle of the anti-corrosion coating.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline anti-corrosion, and in particular to an anti-corrosion device for pipelines in a port tank area and a use method thereof. Background Art

[0002] The port tank area pipeline is a vital component of the port logistics system. It transports various liquid or gas materials, such as crude oil, refined oil, chemical raw materials, etc. from the terminal loading and unloading equipment to the tank area for storage, or transports them from the tank area to the terminal for shipment, and transfers materials between different storage tanks within the tank area. Pipelines of different materials are selected according to the properties of the transported materials and process requirements, such as carbon steel, stainless steel, alloy steel, plastic and other materials.

[0003] Because crude oil, refined oil, chemical raw materials and other corrosive materials, and the external environment is humid and rich in salt, the inner and outer walls of the pipeline are susceptible to corrosion. Corrosion will destroy the organizational structure of the pipeline material. For example, iron reacts chemically with oxygen and water in the air to form rust, which causes the pipeline to become thinner and brittle, and the strength and toughness are reduced. Therefore, the pipeline needs to be treated with anti-corrosion to increase the service life of the pipeline.

[0004] In the patent document with the announcement number CN116045127A, an anti-corrosion cleaning spraying device and method for automatically moving the inner wall of a pipeline are proposed, including a negative pressure support pipe, on which a first walking mechanism, a grinding mechanism, a dust suction mechanism, an isolation mechanism, a second walking mechanism and a spraying mechanism are sequentially mounted, the first walking mechanism and the second walking mechanism are used to support and drive the negative pressure support pipe to move in the pipeline, the grinding mechanism rotates to grind the inner wall of the pipeline, the dust suction mechanism rotates and connects with the negative pressure support pipe to suck dust from the inner cavity of the pipeline, the isolation mechanism isolates the grinding and dust suction area from the spraying area, and the spraying mechanism performs anti-corrosion spraying on the inner wall of the pipeline. By installing the first walking mechanism, the grinding mechanism, the dust suction mechanism, the isolation mechanism, the second walking mechanism and the spraying mechanism on the negative pressure support pipe, the device can grind, dust and clean the inner wall of the pipeline, and spray the anti-corrosion coating at the same time, and the inner wall of the pipeline is sprayed after grinding, and the spraying is uniform and the anti-corrosion effect is good.

[0005] However, the rotational angular velocity of the spray mechanism of the above-mentioned anti-corrosion spray device is fixed. When the diameter of the pipeline is large, the rotation speed of the spray mechanism in the pipeline is constant, and the speed of spraying out the attachments is constant, which will cause the attachments on the inner wall of the pipeline to become thinner and the service life of the anti-corrosion layer to be reduced. Summary of the invention

[0006] The purpose of the present invention is to address the problem in the background technology that a large diameter pipeline rotates too fast resulting in a thin adhesion layer, and to propose an anti-corrosion device for a pipeline in a port tank area and a method of using the same.

[0007] On the one hand, the present invention provides an anti-corrosion device for pipelines in a port tank area, including a base platform. A lifting rod is fixedly installed on the top of the base platform, and a lifting platform for placing pipelines is fixedly installed on the top of the lifting rod. A main hydraulic push rod is fixedly installed on the top of the base platform and at the extension line of the end of the lifting platform.

[0008] It further includes an external pipe rotation-in component and an internal pipe rotation-in component. The external pipe rotation-in component includes a support frame, a push rod, a rotation-in thread, and a first rolling ball. The support frame is fixedly installed on the top of the base platform. The middle of the support frame is rotatably connected to the push rod. The end of the push rod is rotatably connected to the main hydraulic push rod. The rotation-in thread is provided on the push rod. The inner wall of the support frame is in rolling connection with the first rolling ball, and the first rolling ball rolls in the rotation-in thread.

[0009] The internal pipe rotation-in component includes an umbrella frame group, a contact friction plate, an adjustment component, and a flow valve. The umbrella frame group is fixedly connected to the push rod. The end of the umbrella frame group is provided with the contact friction plate. There are multiple contact friction plates, which are distributed equiangularly in a ring around the push rod. The flow valve is fixedly installed in the middle of the umbrella frame group. The flow valve is connected to the contact friction plate through an adjustment component at its top.

[0010] The flow valve is communicated with the main hydraulic push rod through a hydraulic hose. The outer arc surface of the contact friction plate contacts the pipeline, and a fine adjustment component is provided at the end of the contact friction plate.

[0011] Optionally, the adjustment component includes a guide plate, an adjustment rotating block, and a spiral track. Among the multiple contact friction plates, a guide plate is fixedly installed on the side of one contact friction plate. The adjustment rotating block is fixedly installed on the top of the flow valve. Two axially symmetric spiral tracks are provided on the adjustment rotating block. The guide plate is connected to the spiral track through a ball at its side.

[0012] Optionally, the umbrella frame group includes a rotating rod, an intermediate block, a secondary hydraulic push rod, a first umbrella frame, and a second umbrella frame. The intermediate block is fixedly installed in the middle of the rotating rod. Secondary hydraulic push rods are fixedly installed at both ends of the intermediate block. The end of the secondary hydraulic push rod at the front of the intermediate block is hinged to the first umbrella frame. The end of the first umbrella frame is slidably connected to the contact friction plate. The end of the secondary hydraulic push rod at the rear of the intermediate block is hinged to the second umbrella frame. The end of the second umbrella frame is hinged to the contact friction plate.

[0013] Optionally, a slider is slidably connected to the middle of the abutting friction plate. A second rolling ball is rotatably connected to the side of the slider. A hydraulic oil circulation chamber is formed inside the abutting friction plate. A blocking block is slidably connected inside the hydraulic oil circulation chamber. A straight rod passing through the hydraulic oil circulation chamber is fixedly installed between the blocking block and the slider. Both ends of the hydraulic oil circulation chamber are fixedly connected with hoses. The ends of the two hoses are respectively connected to a secondary hydraulic push rod and a hydraulic oil cylinder.

[0014] Optionally, the fine-tuning assembly includes an extension plate, a chute, a fine-tuning block, and an in-pipe spray head. One end of the extension plate is fixedly connected to the abutting friction plate. A chute is formed on the extension plate. The fine-tuning block is slidably connected to the chute. The in-pipe spray head for spraying is fixedly installed on the side of the fine-tuning block. The in-pipe spray head faces the inner wall of the pipeline.

[0015] Optionally, the extension plate is formed by splicing three plates, and the inclination angles of each plate are different. The part of the extension plate connected to the abutting friction plate is parallel to the abutting friction plate. An oil pipe is fixedly installed on the side of the fine-tuning block.

[0016] Optionally, two opposing plates arranged symmetrically are fixedly installed at the end of the fine-tuning block. A cylinder is slidably connected to the center of the opposing plate. The end of the cylinder is fixedly connected to the second umbrella frame. The second umbrella frame is offset from the opposing plate.

[0017] Optionally, the support frame includes a support plate, an upper guide piece, and a lower guide piece. The top of the base platform is fixedly connected to the support plate. The upper guide piece and the lower guide piece are fixedly installed on the side of the support plate. The first rolling balls are rotatably connected to the opposing sides of the upper guide piece and the lower guide piece.

[0018] Optionally, the upper guide piece and the lower guide piece are symmetrically distributed with respect to the push rod. An arc surface is formed in the middle of the upper guide piece. The arc surface of the upper guide piece has the same curvature as the push rod. The shape of the lower guide piece is the same as that of the upper guide piece.

[0019] On the other hand, the present invention provides a method for using an anti-corrosion device, which is applied to the above-mentioned anti-corrosion device for pipelines in a port tank area, and the steps are as follows:

[0020] S1. Raise or lower the height of the lifting platform through the lifting rod, so that the axis of the pipeline and the axis of the main hydraulic push rod are on the same straight line. Push the external pipe rotation assembly to move through the main hydraulic push rod. The external pipe rotation assembly advances and rotates inside the pipeline to perform anti-corrosion treatment on the pipeline.

[0021] S2. The auxiliary hydraulic push rod extends to deploy the first umbrella frame and the second umbrella frame, so as to deploy multiple abutting friction plates, make the multiple abutting friction plates abut against the inner wall of the pipeline, and cooperate with the propulsion and rotation of the external pipe screw-in assembly to process the inner wall of the pipeline by the abutting friction plates, so as to facilitate the attachment of the anti-corrosion coating;

[0022] S3. After all the abutting friction plates abut against the inner wall of the pipeline, the slider and the second rolling ball are pressed into the abutting friction plates. At this time, the blocking block blocks the hose, so that the hydraulic oil in the hydraulic cylinder cannot flow into the auxiliary hydraulic push rod, and the extension of the auxiliary hydraulic push rod can be stopped, so as to adapt to pipelines with different diameters;

[0023] S4. During the deployment of the abutting friction plates, the abutting friction plates pull the guide plate to rotate the adjustment rotating block, so that the flow velocity of the hydraulic oil at the flow valve changes, and the extension speed of the main hydraulic push rod can be changed, so as to adjust and change the rotation linear speed of the abutting friction plates according to the diameter of the pipeline, and slow down the rotation linear speed of the fine-tuning assembly to maintain the thickness of the coating on the inner wall of the pipeline;

[0024] S5. Since the diameters of the pipelines are different, the radian of the inner wall of the pipeline is different, and the spraying area of the in-pipe spray head is different, resulting in different spraying thicknesses. After the second umbrella frame is deployed, it changes the positions of the opposing plate and the fine-tuning block through the cylinder, so as to adjust the distance between the in-pipe spray head and the pipeline, and adjust the spraying area to adjust the spraying thickness.

[0025] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0026] 1. The present invention adapts to the diameter of the pipeline by deploying the abutting friction plates. The larger the deployment distance of the abutting friction plates, the larger the diameter of the pipeline, and the more coating material is required for spraying. The flow velocity of the hydraulic oil at the flow valve is adjusted by the moving distance of the abutting friction plates, so as to reduce the extension speed of the main hydraulic push rod, thereby reducing the rotation linear speed of the fine-tuning assembly, and avoiding the thinning of the thickness of the anti-corrosion layer due to too fast screw-in speed in the pipeline.

[0027] 2. During the advancement of the push rod by the cooperation of the first rolling ball and the screw-in thread, the push rod rotates, so that the abutting friction plates and the fine-tuning assembly rotate, and the main hydraulic push rod, the upper guide piece and the lower guide piece jointly support the push rod, avoiding the inclination of the push rod and preventing the inclination of the screw-in angle of the fine-tuning assembly, which affects the spraying angle of the anti-corrosion coating.

[0028] 3. By adjusting the position of the cylinder through the opening angle of the second umbrella frame, the opposing plate and the fine-tuning block can slide, changing the position of the in-pipe spray head, and the opening angle of the second umbrella frame is related to the deployment angle of the abutting friction plates, that is, related to the inner wall diameter of the pipeline, so as to adjust the position of the in-pipe spray head according to the inner wall diameter of the pipeline and adjust the spraying range. Description of the Drawings

[0029] Figure 1 Provide a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 Schematic diagram of the main hydraulic push rod structure of the present invention;

[0031] Figure 3 Schematic diagram of the second rolling ball structure of the present invention;

[0032] Figure 4 is Figure 3 Enlarged schematic diagram of the nozzle structure inside the pipe of part A of;

[0033] Figure 5 Right view sectional schematic diagram of the structure of the abutting friction plate;

[0034] Figure 6 Schematic diagram of the structure of the push rod;

[0035] Figure 7 Schematic diagram of the structure of the lifting platform;

[0036] Figure 8 Front view schematic diagram of the structure of the extension plate.

[0037] Reference numerals: 1, bottom platform; 2, lifting rod; 3, lifting platform; 4, main hydraulic push rod; 5, external pipe rotation-in component; 51, support plate; 52, upper guide piece; 53, lower guide piece; 54, push rod; 55, rotation-in thread; 56, first rolling ball; 6, internal pipe rotation-in component; 61, rotating rod; 62, intermediate block; 63, auxiliary hydraulic push rod; 64, first umbrella frame; 65, abutting friction plate; 66, second umbrella frame; 67, second rolling ball; 68, slider; 69, blocking block; 610, hydraulic oil circulation chamber; 611, guide plate; 612, flow valve; 613, adjustment rotating block; 614, spiral track; 7, fine adjustment component; 71, extension plate; 72, chute; 73, fine adjustment block; 74, internal pipe nozzle; 75, oil pipe; 76, opposing plate; 77, cylinder. Detailed implementation manners

[0038] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0039] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention.

[0040] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] This embodiment provides an anti-corrosion device for the pipelines in a port tank farm, as Figure 1 and Figure 7 shown. It includes a base table 1, a lifting rod 2 is fixedly installed at the top of the base table 1, a lifting table 3 for placing the pipeline is fixedly installed at the top of the lifting rod 2, and a main hydraulic push rod 4 is fixedly installed at the top of the base table 1 and at the extension line of the end of the lifting table 3.

[0045] The height of the lifting table 3 is adjusted by the lifting rod 2, so that the axis line of the pipeline and the axis line of the main hydraulic push rod 4 are on the same straight line. The outer pipe screwing-in assembly 5 is pushed to move by the main hydraulic push rod 4. The outer pipe screwing-in assembly 5 advances and rotates inside the pipeline to perform anti-corrosion treatment on the pipeline.

[0046] As Figure 2 and Figure 6 shown, an outer pipe screwing-in assembly 5 is provided at the end of the main hydraulic push rod 4, which includes a support frame, a push rod 54, a screwing-in thread 55 and a first rolling ball 56. The support frame is fixedly installed at the top of the base table 1, the middle of the support frame is rotatably connected to the push rod 54, the end of the push rod 54 is rotatably connected to the main hydraulic push rod 4, the screwing-in thread 55 is formed on the push rod 54, the inner wall of the support frame is in rolling connection with the first rolling ball 56, and the first rolling ball 56 rolls in the screwing-in thread 55.

[0047] The extension of the main hydraulic push rod 4 causes the propulsion rod 54 to move, and the first rolling ball 56 cooperates with the screw-in thread 55 to cause the propulsion rod 54 to rotate during the movement.

[0048] As Figures 2 - 5 shown, a pipe-in screw-in assembly 6 is provided at the end of the propulsion rod 54, including an umbrella frame group, a contact friction plate 65, an adjustment assembly, and a flow valve 612. The umbrella frame group includes a screw rod 61, an intermediate block 62, a secondary hydraulic push rod 63, a first umbrella frame 64, and a second umbrella frame 66. The middle of the screw rod 61 is fixedly installed with the intermediate block 62, and the secondary hydraulic push rods 63 are fixedly installed at both ends of the intermediate block 62.

[0049] The end of the secondary hydraulic push rod 63 located at the front end of the intermediate block 62 is hinged to the first umbrella frame 64, and the end of the first umbrella frame 64 is slidably connected to the contact friction plate 65. The end of the secondary hydraulic push rod 63 located at the rear end of the intermediate block 62 is hinged to the second umbrella frame 66, and the end of the second umbrella frame 66 is hinged to the contact friction plate 65. To prevent the contact friction plate 65 from getting stuck when it unfolds, and since the end of the second umbrella frame 66 is hinged to the contact friction plate 65, the occlusion between the contact friction plate 65 and the second umbrella frame 66 is reduced, and the contact friction plate 65 performs friction treatment on the inner wall of the pipe.

[0050] The contact friction plate 65 is provided at the end of the umbrella frame group. A plurality of contact friction plates 65 are provided and are distributed at equal angles around the propulsion rod 54 in a ring shape. The flow valve 612 is fixedly installed in the middle of the umbrella frame group. The flow valve 612 is connected to the contact friction plate 65 through the adjustment assembly at its top. The flow valve 612 is communicated with the main hydraulic push rod 4 through a hydraulic hose. The outer arc surface of the contact friction plate 65 contacts the pipe, and a fine adjustment assembly 7 is provided at the end of the contact friction plate 65.

[0051] The extension of the secondary hydraulic push rod 63 causes the first umbrella frame 64 and the second umbrella frame 66 to unfold, so as to unfold a plurality of contact friction plates 65, make the plurality of contact friction plates 65 contact the inner wall of the pipe, and cooperate with the propulsion and rotation of the pipe-out screw-in assembly 5 to make the contact friction plate 65 process the inner wall of the pipe for the attachment of the anti-corrosion coating. After all the contact friction plates 65 are in contact with the inner wall of the pipe, the slider 68 and the second rolling ball 67 are pressed into the contact friction plate 65. At this time, the blocking block 69 blocks the hose, so that the hydraulic oil in the hydraulic cylinder cannot flow into the secondary hydraulic push rod 63, and the extension of the secondary hydraulic push rod 63 can be stopped, thereby adapting to pipes of different diameters.

[0052] The adjusting assembly includes a guide plate 611, an adjusting rotary block 613, and a spiral track 614. Among the multiple abutting friction plates 65, a guide plate 611 is fixedly installed on the side of one of the abutting friction plates 65. The adjusting rotary block 613 is fixedly installed on the top of the flow valve 612. Two axially symmetric spiral tracks 614 are provided on the adjusting rotary block 613. The guide plate 611 is connected to the spiral track 614 through the balls on its side.

[0053] The larger the diameter of the pipeline, the more coating it requires. However, the speed at which the main hydraulic push rod 4 drives the fine-tuning assembly 7 to rotate forward remains constant, and the linear speed of rotation of the fine-tuning assembly 7 remains unchanged, which will result in insufficient spraying thickness. During the process of the abutting friction plate 65 unfolding, the abutting friction plate 65 pulls the guide plate 611 to rotate the adjusting rotary block 613, that is, the flow valve 612 rotates to change the flow rate of the hydraulic oil in the hydraulic hose. By adjusting the extension speed of the main hydraulic push rod 4, the forward and rotation speeds of the fine-tuning assembly 7 can be adjusted, and thus the spraying thickness of the fine-tuning assembly 7 on the pipeline can be adjusted.

[0054] In this embodiment, the abutting friction plate 65 is unfolded to adapt to the diameter of the pipeline. The larger the unfolding distance of the abutting friction plate 65, the larger the pipeline diameter and the more coating it requires. By adjusting the moving distance of the abutting friction plate 65, the flow rate of the hydraulic oil at the flow valve 612 is adjusted, thereby reducing the extension speed of the main hydraulic push rod 4 and the linear speed of rotation of the fine-tuning assembly 7, avoiding the thickness of the anti-corrosion layer caused by too fast a rotation speed in the pipeline.

[0055] Embodiment 2

[0056] Based on Embodiment 1, this embodiment proposes an anti-corrosion device for the pipelines in the port tank area, as Figure 6 shown. The support frame includes a support plate 51, an upper guide piece 52, and a lower guide piece 53. The top of the base 1 is fixedly connected to the support plate 51. The upper guide piece 52 and the lower guide piece 53 are fixedly installed on the side of the support plate 51. The first rolling balls 56 are connected in a rolling manner on the opposite sides of the upper guide piece 52 and the lower guide piece 53.

[0057] During the process of the push rod 54 advancing through the cooperation of the first rolling balls 56 and the screw-in threads 55, it rotates to make the abutting friction plate 65 and the fine-tuning assembly 7 rotate.

[0058] The upper guide piece 52 and the lower guide piece 53 are symmetrically distributed with respect to the push rod 54. An arc surface is provided in the middle of the upper guide piece 52, and the arc surface of the upper guide piece 52 has the same curvature as the push rod 54. The shape of the lower guide piece 53 is the same as that of the upper guide piece 52.

[0059] In this embodiment, during the process of the push rod 54 advancing through the cooperation of the first rolling ball 56 and the progressive thread 55, the push rod 54 rotates, so as to make the abutting friction plate 65 and the fine-tuning assembly 7 rotate. Moreover, the main hydraulic push rod 4, the upper guide piece 52 and the lower guide piece 53 jointly support the push rod 54 to prevent the push rod 54 from tilting and prevent the progressive angle of the fine-tuning assembly 7 from tilting, which may affect the spraying angle of the anti-corrosion coating.

[0060] Embodiment 3

[0061] Based on the above Embodiment 1 or Embodiment 2, this embodiment provides an anti-corrosion device for the pipelines in a port tank area, as Figure 4 and Figure 8 shown, the fine-tuning assembly 7 includes an extension plate 71, a chute 72, a fine-tuning block 73 and an in-pipe spray head 74. One end of the extension plate 71 is fixedly connected to the abutting friction plate 65. A chute 72 is formed on the extension plate 71. The fine-tuning block 73 is slidably connected to the chute 72. The in-pipe spray head 74 for spraying is fixedly installed on the side of the fine-tuning block 73, and the in-pipe spray head 74 faces the inner wall of the pipeline.

[0062] Since the diameters of the pipelines are different, the radian of the inner wall of the pipeline is different, and the spraying area of the in-pipe spray head 74 is different, resulting in different spraying thicknesses. After the second umbrella frame 66 is unfolded, it changes the positions of the opposing plate 76 and the fine-tuning block 73 through the cylinder 77, thereby adjusting the distance between the in-pipe spray head 74 and the pipeline. Adjusting the spraying area can adjust the spraying thickness.

[0063] The extension plate 71 is formed by splicing three plates, and the inclination angle of each plate is different. The part of the extension plate 71 connected to the abutting friction plate 65 is parallel to the abutting friction plate 65. An oil pipe 75 is fixedly installed on the side of the fine-tuning block 73. The different inclination angles of each plate prevent the extension plate 71 from blocking the anti-corrosion coating sprayed by the in-pipe spray head 74.

[0064] Two symmetrically arranged opposing plates 76 are fixedly installed at the end of the fine-tuning block 73. A cylinder 77 is slidably connected to the center of the opposing plate 76. The end of the cylinder 77 is fixedly connected to the second umbrella frame 66, and the second umbrella frame 66 is misaligned with the opposing plate 76.

[0065] In this embodiment, by adjusting the position of the cylinder 77 through the opening angle of the second umbrella frame 66, the opposing plate 76 and the fine-tuning block 73 can be slid to change the position of the in-pipe spray head 74. Moreover, the opening angle of the second umbrella frame 66 is related to the unfolding angle of the abutting friction plate 65, that is, related to the inner wall diameter of the pipeline. Therefore, the position of the in-pipe spray head 74 is adjusted according to the inner wall diameter of the pipeline to adjust the spraying range.

[0066] A method for using an anti-corrosion device, which is applied to the above-mentioned anti-corrosion device for the pipelines in a port tank area, and the steps are as follows:

[0067] S1. Raise or lower the height of the lifting platform 3 through the lifting rod 2 so that the axis line of the pipeline is on the same straight line as the axis line of the main hydraulic push rod 4. Push the external pipe rotation and advancement assembly 5 to move through the main hydraulic push rod 4. The external pipe rotation and advancement assembly 5 advances and rotates inside the pipeline to perform anti-corrosion treatment on the pipeline;

[0068] S2. Extend the auxiliary hydraulic push rod 63 to expand the first umbrella frame 64 and the second umbrella frame 66, so as to expand a plurality of abutting friction plates 65, make the plurality of abutting friction plates 65 abut against the inner wall of the pipeline, and cooperate with the advancement and rotation of the external pipe rotation and advancement assembly 5 to make the abutting friction plates 65 process the inner wall of the pipeline for the attachment of the anti-corrosion coating;

[0069] S3. After all the abutting friction plates 65 are abutted against the inner wall of the pipeline, the slider 68 and the second ball 67 are pressed into the abutting friction plate 65. At this time, the blocking block 69 blocks the hose, so that the hydraulic oil in the hydraulic cylinder cannot flow into the auxiliary hydraulic push rod 63, and the extension of the auxiliary hydraulic push rod 63 can be stopped, so as to adapt to pipelines with different diameters;

[0070] S4. During the expansion of the abutting friction plate 65, the abutting friction plate 65 pulls the guide plate 611 to rotate the adjustment block 613, so that the flow rate of the hydraulic oil at the flow valve 612 changes, and the extension speed of the main hydraulic push rod 4 can be changed. Thus, according to the diameter of the pipeline, the rotational linear speed of the abutting friction plate 65 is adjusted and changed, and the rotational linear speed of the fine adjustment assembly 7 becomes slower to maintain the thickness of the coating on the inner wall of the pipeline;

[0071] S5. Due to different pipeline diameters, the radian of the inner wall of the pipeline is different, and the spraying area of the in-pipe nozzle 74 is different, so the spraying thickness is different. After the second umbrella frame 66 is expanded, it changes the positions of the opposing plate 76 and the fine adjustment block 73 through the cylinder 77, thereby adjusting the distance between the in-pipe nozzle 74 and the pipeline, and adjusting the spraying area can adjust the spraying thickness.

[0072] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An anti-corrosion device for pipelines in a port tank area, comprising a base (1), a lifting rod (2) is fixedly installed on the top of the base (1), a lifting platform (3) for placing pipelines is fixedly installed on the top of the lifting rod (2), and a main hydraulic push rod (4) is fixedly installed on the top of the base (1) and at the extension line of the end of the lifting platform (3), characterized in that: It also includes an external tube screw-in assembly (5) and an internal tube screw-in assembly (6), the external tube screw-in assembly (5) including a support frame, a push rod (54), a screw-in thread (55) and a first rolling ball (56), the support frame being fixedly mounted on the top of the base (1), the middle of the support frame being rotatably connected to the push rod (54), the end of the push rod (54) being rotatably connected to the main hydraulic push rod (4), the push rod (54) being provided with a screw-in thread (55), the inner wall of the support frame being rollingly connected to the first rolling ball (56), and the first rolling ball (56) rolling in the screw-in thread (55); The in-tube screw-in assembly (6) comprises an umbrella frame assembly, abutting friction plates (65), an adjustment assembly and a flow valve (612), wherein the umbrella frame assembly is fixedly connected to the propulsion rod (54), an abutting friction plate (65) is arranged at the end of the umbrella frame assembly, a plurality of abutting friction plates (65) are arranged and are distributed in a ring-shaped manner at equal angles around the propulsion rod (54); The umbrella frame group comprises a rotating rod (61), an intermediate block (62), an auxiliary hydraulic push rod (63), a first umbrella frame (64) and a second umbrella frame (66); the intermediate block (62) is fixedly mounted in the middle of the rotating rod (61); the auxiliary hydraulic push rods (63) are fixedly mounted at both ends of the intermediate block (62); the end of the auxiliary hydraulic push rod (63) located at the front end of the intermediate block (62) is hingedly connected to the first umbrella frame (64); the end of the first umbrella frame (64) is slidably connected to abutting friction plate (65); the end of the auxiliary hydraulic push rod (63) located at the rear end of the intermediate block (62) is hingedly connected to the second umbrella frame (66); the end of the second umbrella frame (66) is hingedly connected to the abutting friction plate (65); and the flow valve (612) is connected to the abutting friction plate (65) via an adjustment component at the top thereof; A slider (68) is slidably connected to the middle of the friction plate (65), a second rolling ball (67) is rollably connected to the side of the slider (68), a hydraulic oil circulation chamber (610) is provided inside the friction plate (65), a blocking block (69) is slidably connected inside the hydraulic oil circulation chamber (610), a straight rod extending from the hydraulic oil circulation chamber (610) is fixedly installed between the blocking block (69) and the slider (68), and hoses are fixedly connected to both ends of the hydraulic oil circulation chamber (610), and the ends of the two hoses are respectively connected to the auxiliary hydraulic push rod (63) and the hydraulic oil cylinder; The regulating assembly comprises a guide plate (611), an adjusting rotary block (613) and a spiral track (614); among the plurality of abutting friction plates (65), there is a guide plate (611) fixedly mounted on the side of the abutting friction plate (65); the adjusting rotary block (613) is fixedly mounted on the top of the flow valve (612); two axially symmetrical spiral tracks (614) are formed on the adjusting rotary block (613); and the guide plate (611) is connected to the spiral track (614) via a ball bearing on the side thereof; The flow valve (612) is connected to the main hydraulic push rod (4) through a hydraulic hose, the outer arc surface of the abutting friction plate (65) is in contact with the pipeline, and the end of the abutting friction plate (65) is provided with a fine adjustment component (7); The fine-tuning assembly (7) comprises an extension plate (71), a slide groove (72), a fine-tuning block (73) and an in-pipe spray head (74); one end of the extension plate (71) is fixedly connected to the friction plate (65); a slide groove (72) is provided on the extension plate (71); the slide groove (72) is slidably connected to the fine-tuning block (73); a side portion of the fine-tuning block (73) is fixedly mounted with an in-pipe spray head (74) for spraying; the in-pipe spray head (74) faces the inner wall of the pipeline; The extension plate (71) is formed by splicing three plates, each plate having a different inclination angle, the portion where the extension plate (71) is connected to the abutting friction plate (65) is parallel to the abutting friction plate (65), and an oil pipe (75) is fixedly mounted on the side of the fine-tuning block (73); Two symmetrically arranged opposing plates (76) are fixedly mounted on the end of the fine-tuning block (73); a cylinder (77) is slidably connected to the center of the opposing plates (76); the end of the cylinder (77) is fixedly connected to the second umbrella frame (66); and the second umbrella frame (66) and the opposing plates (76) are staggered.

2. The anti-corrosion equipment for pipelines in port tank areas according to claim 1 is characterized by: The support frame comprises a support plate (51), an upper guide piece (52) and a lower guide piece (53); the top of the base (1) is fixedly connected to the support plate (51); the upper guide piece (52) and the lower guide piece (53) are fixedly mounted on the side of the support plate (51); and the first rolling ball (56) is rollingly connected to the opposite side of the upper guide piece (52) and the lower guide piece (53).

3. The anti-corrosion equipment for pipelines in port tank areas according to claim 2 is characterized by: The upper guide piece (52) and the lower guide piece (53) are symmetrically distributed about the propulsion rod (54); a curved surface is provided in the middle of the upper guide piece (52); the curved surface of the upper guide piece (52) has the same curvature as the propulsion rod (54); and the shape of the lower guide piece (53) is the same as that of the upper guide piece (52).

4. A method for using an anti-corrosion device, applied to the anti-corrosion device for a pipeline in a port tank area as claimed in claim 3, the steps of which are as follows: S1. The height of the lifting platform (3) is raised and lowered by the lifting rod (2) so that the axis of the pipeline and the axis of the main hydraulic push rod (4) are located on the same straight line, and the main hydraulic push rod (4) is used to push the pipe external rotation assembly (5) to move, and the pipe external rotation assembly (5) moves forward and rotates in the pipeline to perform anti-corrosion treatment on the pipeline; S2, the auxiliary hydraulic push rod (63) extends to unfold the first umbrella frame (64) and the second umbrella frame (66), so as to unfold the plurality of abutting friction plates (65), so that the plurality of abutting friction plates (65) abut against the inner wall of the pipe, and cooperates with the advancement and rotation of the pipe outer screwing assembly (5) so that the abutting friction plates (65) treat the inner wall of the pipe to facilitate the attachment of the anti-corrosion coating; S3. After all the abutting friction plates (65) are abutted against the inner wall of the pipe, the slider (68) and the second rolling ball (67) are pressed into the abutting friction plates (65). At this time, the blocking block (69) blocks the hose, so that the hydraulic oil in the hydraulic cylinder cannot flow into the auxiliary hydraulic push rod (63), and the auxiliary hydraulic push rod (63) can be stopped from extending, thereby adapting to pipes of different diameters; S4. During the process of extending the abutting friction plate (65), the abutting friction plate (65) pulls the guide plate (611) to rotate the adjusting rotary block (613), so that the flow speed of the hydraulic oil at the flow valve (612) changes, thereby changing the extension speed of the main hydraulic push rod (4), thereby adjusting and changing the rotational linear speed of the abutting friction plate (65) according to the diameter of the pipeline, and slowing down the rotational linear speed of the fine-tuning component (7) to maintain the thickness of the coating on the inner wall of the pipeline; S5. The pipe diameter is different, the curvature of the inner wall of the pipe is different, the spraying area of ​​the nozzle (74) in the pipe is different, and the spraying thickness is different. After the second umbrella frame (66) is unfolded, it changes the position of the opposing plate (76) and the fine-tuning block (73) through the cylinder (77), thereby adjusting the distance between the nozzle (74) in the pipe and the pipe. The spraying thickness can be adjusted by adjusting the spraying area.

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