A device for positioning a solid corrosion protection inside a pipe

Abstract

The utility model provides a device for positioning solid corrosion -resistant object in pipeline inner wall, including support mechanism, set up on support mechanism's extension mechanism and with the selected mode of setting in extension mechanism, with the force from extension mechanism is received to solid corrosion -resistant object is positioned flexible mechanism. Among them, the cavity is provided on the support mechanism, the extension mechanism is located in the cavity, and the radial motion in the cavity is allowed, so that the selected mode and the radial inner side of the support mechanism are mutually abutted together, and then the selected force is applied to the flexible mechanism. In this way, when the flexible mechanism is disassembled, the extension mechanism can first move radially inward, so that the extension mechanism and the flexible mechanism are mutually separated, and then the force is applied to the flexible mechanism, and then the flexible mechanism is moved to the outside. Therefore, the friction force generated by the solid corrosion -resistant object can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline corrosion protection technology, and in particular to a device for locating solid corrosion-resistant materials on the inner wall of a pipeline. Background Technology

[0002] Pipelines are widely used in petroleum, chemical, and water supply industries. Their inner walls are susceptible to corrosion damage due to prolonged contact with corrosive media. Therefore, corrosion protection treatment is necessary for the inner walls of pipelines to ensure they meet fluid supply requirements.

[0003] In industrial production, a cylindrical mold is typically installed on the inner wall of a pipe, creating an annular cavity between the mold and the pipe wall. A solid corrosion inhibitor is then added into this cavity, adhering to the inner wall of the pipe. This completes the corrosion protection treatment of the pipe.

[0004] Existing cylindrical molds generally include a rigid cylindrical tube and a rubber sleeve disposed on the outside of the rigid cylindrical tube for contact with a solid corrosion-resistant material. The rigid cylindrical tube serves to support the rubber sleeve.

[0005] While this method achieves corrosion protection, disassembly typically requires pulling the rigid cylindrical tube out of the pipe and then moving the rubber sleeve to the outside. During this process, because the rigid cylindrical tube is in contact with the solid corrosion-resistant material, the friction between them is significant, which can easily damage the solid corrosion-resistant material. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a device for locating solid anti-corrosion materials on the inner wall of pipes. To achieve the above objective, this utility model adopts the following technical solution:

[0007] A device for positioning a solid anti-corrosion material on the inner wall of a pipe includes a support mechanism, an extension mechanism disposed on the support mechanism, and a flexible mechanism selectively fitted onto the extension mechanism to receive forces from the extension mechanism, thereby positioning the solid anti-corrosion material.

[0008] The support mechanism has a cavity, the expansion mechanism is located in the cavity and is allowed to move radially within the cavity, thereby selectively abutting against the radially inner side of the support mechanism, and thus selectively applying force to the flexible mechanism.

[0009] Furthermore, the expansion mechanism includes several arc-shaped abutment portions disposed within the cavity and extending axially upward, wherein the cross-section formed by the several arc-shaped abutment portions is circular, and allows them to fit together with the radially inner side of the support mechanism.

[0010] Furthermore, the axial length of the arc-shaped abutment is set to be greater than the axial length of the pipe, so that when the arc-shaped abutment supports the flexible mechanism, an annular space is formed between the flexible mechanism and the inner wall of the pipe to accommodate the solid anti-corrosion material.

[0011] Furthermore, the extension mechanism also includes an adjustment portion that passes through the support mechanism and extends radially. The adjustment portion is configured to allow it to be fixed relative to the support mechanism in a selective manner, and the end of the adjustment portion and the arcuate abutment portion are connected to each other, thereby selectively driving the arcuate abutment portion to move radially within the cavity.

[0012] Furthermore, a through hole is provided radially on the support mechanism, and the adjustment part includes an adjustment rod disposed in the through hole. A first limiting hole is provided radially on the adjustment rod, and a second limiting hole is also provided axially on the support mechanism, such that the axis of the second limiting hole intersects with the through hole. A limiting member is also selectively disposed in the second limiting hole. The limiting member is configured to allow it to pass through the through hole along the second limiting hole and is located in the first limiting hole, so as to restrict the movement of the adjustment rod.

[0013] Furthermore, the axes of the second limiting hole and the through hole are set to be perpendicular to each other to increase the contact area between the limiting member and the support mechanism and the adjusting rod.

[0014] Furthermore, at least two of the first limiting holes are provided and distributed along the axial direction of the adjusting rod to adjust the relative distance between the arc-shaped abutment and the flexible mechanism.

[0015] Furthermore, the cross-section of the limiting member is set into a trapezoidal structure so that the force exerted by the limiting member on the support mechanism and the adjusting rod increases with the length of the limiting member located in the second limiting hole and the through hole.

[0016] Furthermore, an upwardly extending positioning mechanism is provided on the support structure, so that the end face of the pipe abuts against the support structure, while the outer wall abuts against the positioning mechanism, in order to position the pipe in place.

[0017] Furthermore, the flexible mechanism is configured as a cylindrical structure and is made of nitrile rubber.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model includes a support mechanism and an extension mechanism located on the support mechanism. A flexible mechanism, sleeved on the extension mechanism, is also provided to receive forces from the extension mechanism, thereby positioning the solid anti-corrosion material. The support mechanism has a cavity, within which the extension mechanism is located and allowed to move radially. This allows it to selectively abut against the radially inner side of the support mechanism, thereby applying a selective force to the flexible mechanism. In this way, when disassembling the flexible mechanism, the extension mechanism can first be moved radially inward to disengage from the flexible mechanism, and then a force can be applied to the flexible mechanism to move it to the outside. This reduces the frictional force on the solid anti-corrosion material. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall structure of the device for locating solid anti-corrosion material on the inner wall of a pipeline, according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the support mechanism and the positioning mechanism working together in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the adjustment part in an embodiment of this utility model.

[0024] In the above figures: a device 100 for positioning solid anti-corrosion material on the inner wall of a pipe, a support mechanism 1, a cavity 11, a through hole 12, a second limiting hole 13, a limiting member 131, an expansion mechanism 2, an arc-shaped abutment part 21, an adjustment part 22, an adjustment rod 221, a first limiting hole 222, a flexible mechanism 3, and a positioning mechanism 4. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] To better understand the purpose, structure, and function of this utility model, the following detailed description, in conjunction with the accompanying drawings, describes a device for locating solid anti-corrosion materials on the inner wall of a pipeline.

[0027] Figure 1 The schematic diagram illustrates the overall structure of the device for positioning solid anti-corrosion materials on the inner wall of a pipe according to the present invention. In such... Figure 1 In the illustrated embodiment, the device 100 for positioning the solid anti-corrosion material on the inner wall of the pipe includes a support mechanism 1.

[0028] Meanwhile, the device 100 also includes an extension mechanism 2 disposed on the support mechanism 1, and a flexible mechanism 3 selectively fitted onto the extension mechanism 2. In this way, the extension mechanism 2 can support the flexible mechanism 3 in the circumferential direction, thereby allowing the radially outer side of the flexible mechanism 3, the inner wall of the pipe (not shown in the figure), and the support mechanism 1 to jointly form a space for accommodating the solid corrosion inhibitor. Thus, the solid corrosion inhibitor can be added into this space, and the solid corrosion inhibitor can adhere to the inner wall of the pipe.

[0029] In addition, such as Figure 1 As shown, the extension mechanism 2 is configured to allow radial movement within the cavity 11. In this way, the force exerted by the extension mechanism 2 on the flexible mechanism 3 can be adjusted. Specifically, it allows the extension mechanism 2 to support the flexible mechanism 3, or to disengage the extension mechanism 2 and the flexible mechanism 3 from each other.

[0030] Therefore, it is convenient to install the flexible mechanism 3 in the space or to detach the flexible mechanism 3 from the space. It should be noted that the extension mechanism 2 can be selectively abutted against the radially inner side of the support mechanism 1. This allows the support mechanism 1 to position the extension mechanism 2.

[0031] In this configuration, when corrosion protection is required for the inner wall of the pipe, the pipe (not shown in the figure) is first placed on the support mechanism 1, with the expansion mechanism 2 positioned within the pipe passage. Simultaneously, a flexible mechanism 3 is positioned radially outside the expansion mechanism 2, allowing the expansion mechanism 2 to move radially. Specifically, the expansion mechanism 2 expands within the cavity 11 until it and the radially inner side of the support mechanism 1 come into contact. At this point, the expansion mechanism 2 applies a force to the flexible mechanism 3.

[0032] In this way, the radially outer side of the flexible mechanism 3, the inner wall of the pipe (not shown in the figure), and the support mechanism 1 can jointly form a space to accommodate the solid corrosion inhibitor. Then, the solid corrosion inhibitor is added into this space. During this process, the solid corrosion inhibitor adheres to the inner wall of the pipe. Thus, corrosion protection of the inner wall of the pipe is achieved.

[0033] In one embodiment, such as Figure 1 As shown, the expansion mechanism 2 includes an arc-shaped abutment portion 21, which is disposed within the cavity 11 and extends axially upward. Several arc-shaped abutment portions 21 are provided, and their combined cross-section is circular. It should be noted that the cavity 11 is also constructed to be circular. In this embodiment, the expanded state of the several arc-shaped abutment portions 21 allows them to conform to the contour of the cavity 11.

[0034] In this way, several arc-shaped contact parts 21 can exert a force on the flexible mechanism 3 together in the circumferential direction, and make the cross-section of the flexible mechanism 3 circular, thereby making the space for accommodating the solid anti-corrosion material formed by the radial outer side of the flexible mechanism 3, the inner wall of the pipe (not shown in the figure), and the support mechanism 1 annular.

[0035] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the axial length of the arc-shaped abutment portion 21 is set to be greater than the axial length of the pipe. In this way, the arc-shaped abutment portion 21 can fully support the flexible mechanism 3. Furthermore, it also allows an opening (not shown in the figure) to be formed between the flexible mechanism 3 and the inner wall of the pipe for adding solid anti-corrosion material.

[0036] In one embodiment, such as Figure 1 As shown, the extension mechanism 2 also includes an adjustment portion 22 that passes through the support mechanism 1 and extends radially. In this embodiment, the adjustment portion 22 is configured to allow it to be fixed relative to the support mechanism 1 in a selective manner, such that the end of the adjustment portion 22 and the arcuate abutment portion 21 are connected to each other.

[0037] In this way, the movement of the adjusting part 22 can drive the movement of the arc-shaped abutment part 21, thereby causing the expansion mechanism 2 to expand or contract. It should be noted that the number of adjusting parts 22 is approximately equal to the number of arc-shaped abutment parts 21, and each adjusting part 22 is connected to each arc-shaped abutment part 21. It should also be noted that when the expansion mechanism 2 is in the expanded state, the contours of each arc-shaped abutment part 21 and the cavity 11 fit together.

[0038] In this configuration, when the expansion mechanism 2 needs to expand to abut against the flexible mechanism 3, forces are applied to the adjustment parts 22 in an orderly manner, causing each adjustment part 22 to move radially outward in sequence. During this process, the adjustment parts 22 will sequentially drive each arc-shaped abutment part 21 to move radially outward until the contours of each arc-shaped abutment part 21 and the cavity 11 fit together. It should be noted that the order in which forces are applied to the adjustment parts 22 is from the radially outer side to the radially inner side of the arc-shaped abutment parts 21.

[0039] In one embodiment, such as Figure 1 , 2 As shown in Figure 3, a through hole 12 is provided radially on the support mechanism 1. The adjustment part 22 includes an adjustment rod 221 disposed in the through hole 12, and a first limiting hole 222 is provided radially on the adjustment rod 221. At the same time, a second limiting hole 13 is also provided axially on the support mechanism 1, and the axis of the second limiting hole 13 is configured to intersect with the axis of the through hole 12.

[0040] In addition, such as Figure 1 As shown, a limiting member 131 is selectively provided in the second limiting hole 13. The limiting member 131 is configured to allow passage through the through hole 12 along the second limiting hole 13 and is located in the first limiting hole 222 to limit the movement of the adjusting rod 221.

[0041] It should be noted that when the limiting member 131 is located within the first limiting hole 222, the contours of each arc-shaped abutment part 21 and the cavity 11 fit together. In this way, each arc-shaped abutment part 21 stably applies force to the flexible mechanism 3.

[0042] In one embodiment, such as Figure 1 As shown, the axes of the second limiting hole 13 and the through hole 12 are arranged perpendicular to each other. In this way, when the limiting part 131 is disposed in the second through hole 12, the contact area between the limiting member 131 and the support mechanism 1 and the adjusting rod 221 can be increased. As a result, the frictional force generated between the limiting member 131 and the support mechanism 1 and the adjusting rod 221 can be increased, thereby allowing the adjusting rod 211 to be more stably fixed relative to the support mechanism 1.

[0043] In one embodiment, such as Figure 3 As shown, at least two first limiting holes 222 are provided and distributed along the axial direction of the adjusting rod 221. In this way, the relative distance between the arc-shaped abutment portion 21 and the flexible mechanism 3 can be adjusted. Thus, the arc-shaped abutment portion 21 and the flexible mechanism 3 can be brought into contact with each other or separated from each other, thereby facilitating the setting and disassembly of the arc-shaped abutment portion 21.

[0044] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the cross-section of the limiting member 131 is configured as a trapezoidal structure. In this way, the force exerted by the limiting member 131 on the support mechanism 1 and the adjusting rod 221 increases with the length of the limiting member 131 within the second limiting hole 13 and the through hole 12. This further secures the adjusting rod 221 and the support mechanism 1 together.

[0045] In one embodiment, such as Figure 1 , 2 As shown, an upwardly extending positioning mechanism 4 is also provided on the support mechanism 1, so that the end face of the pipe abuts against the support mechanism 1, while the outer wall abuts against the positioning mechanism 4. In this way, the placement position of the pipe is positioned.

[0046] According to a preferred embodiment of the present invention, such as Figure 1 As shown, the flexible mechanism 3 is configured as a cylindrical structure and is made of nitrile rubber.

[0047] The operation of the device 100 for locating solid anti-corrosion material on the inner wall of a pipeline according to this utility model is as follows.

[0048] First, a pipe (not shown in the figure) is placed on the support mechanism 1, and the outer wall of the pipe and the positioning mechanism 4 are abutted together. At the same time, a flexible mechanism 3 is fitted on the radially outer side of several arc-shaped abutment parts 21, and the end face of the flexible mechanism 3 is abutted together with the support mechanism 1.

[0049] Furthermore, a force is applied to each adjusting rod 221, causing each adjusting rod 221 to move radially outward. During this process, each adjusting rod 221 will drive each arc-shaped abutment part 21 to move radially outward within the cavity 11 until each arc-shaped abutment part 21 and the support mechanism 1 abut against each other. At this time, each arc-shaped abutment part 21 will apply a force to the flexible mechanism 3, thereby stabilizing the flexible mechanism 3.

[0050] In this configuration, the radially outer side of the flexible mechanism 3, the inner wall of the pipe, and the support mechanism 1 together form a space to accommodate the solid corrosion inhibitor. Then, the solid corrosion inhibitor is added into this space along the opening formed between the pipe end face and the flexible mechanism 3. This completes the addition of the solid corrosion inhibitor.

[0051] Then, when it is necessary to disassemble the flexible mechanism 3 from the space, a force is applied to the adjusting rods 221 again, causing each adjusting rod 221 to move radially inward. During this process, each adjusting rod 221 will drive each arc-shaped abutment part 21 to move radially inward within the cavity 11, thereby causing each arc-shaped abutment part 21 to disengage from the flexible mechanism 3.

[0052] At this point, a force is applied to the flexible mechanism 3 until it moves from the space to the outside. This completes the disassembly of the flexible mechanism 3. In this way, the force applied to the flexible mechanism 3 by the extension mechanism 2 during its movement to the outside is avoided. This reduces the friction between the flexible mechanism 3 and the solid corrosion inhibitor, thus preventing the solid corrosion inhibitor located on the inner wall of the pipe from moving along with the flexible mechanism 3.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for locating solid anti-corrosion material on the inner wall of a pipe, characterized in that, It includes a support mechanism (1), an extension mechanism (2) set on the support mechanism (1), and a flexible mechanism (3) selectively fitted on the extension mechanism (2) to receive the force from the extension mechanism (2) and thereby position the solid anti-corrosion material. The support mechanism (1) has a cavity (11) and the expansion mechanism (2) is located in the cavity (11) and is allowed to move radially within the cavity (11) so as to abut against the radial inner side of the support mechanism (1) in a selective manner, thereby applying force to the flexible mechanism (3) in a selective manner.

2. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 1, characterized in that, The expansion mechanism (2) includes a plurality of arc-shaped abutment portions (21) disposed in the cavity (11) and extending axially upward. The cross section formed by the plurality of arc-shaped abutment portions (21) is circular and allows them to fit together with the radial inner side of the support mechanism (1).

3. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 2, characterized in that, The axial length of the arc-shaped abutment (21) is set to be greater than the axial length of the pipe, so that when the arc-shaped abutment (21) supports the flexible mechanism (3), an annular space is formed between the flexible mechanism (3) and the inner wall of the pipe to accommodate the solid anti-corrosion material.

4. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 3, characterized in that, The extension mechanism (2) further includes an adjustment part (22) that passes through the support mechanism (1) and extends radially. The adjustment part (22) is configured to allow it to be fixed relative to the support mechanism (1) in a selective manner, and to connect the end of the adjustment part (22) and the arcuate abutment part (21) to each other, thereby selectively driving the arcuate abutment part (21) to move radially within the cavity (11).

5. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 4, characterized in that, A through hole (12) is provided radially on the support mechanism (1). The adjustment part (22) includes an adjustment rod (221) disposed in the through hole (12). A first limiting hole (222) is provided radially on the adjustment rod (221). A second limiting hole (13) is also provided axially on the support mechanism (1), such that the axis of the second limiting hole (13) intersects with the through hole (12). A limiting member (131) is also selectively disposed in the second limiting hole (13). The limiting member (131) is configured to allow passage along the second limiting hole (13) in the through hole (12) and is located in the first limiting hole (222) to limit the movement of the adjustment rod (221).

6. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 5, characterized in that, The axes of the second limiting hole (13) and the through hole (12) are set to be perpendicular to each other to increase the contact area between the limiting member (131) and the support mechanism (1) and the adjusting rod (221).

7. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 6, characterized in that, The first limiting hole (222) is provided in at least two and is distributed along the axial direction of the adjusting rod (221) to adjust the relative distance between the arc-shaped abutment (21) and the flexible mechanism (3).

8. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 7, characterized in that, The cross section of the limiting member (131) is set in a trapezoidal structure so that the force exerted by the limiting member (131) on the support mechanism (1) and the adjusting rod (221) increases with the length of the limiting member (131) located in the second limiting hole (13) and the through hole (12).

9. The device for positioning solid anti-corrosion material on the inner wall of a pipeline according to any one of claims 1-8, characterized in that, An upwardly extending positioning mechanism (4) is also provided on the support mechanism (1), so that the end face of the pipe abuts against the support mechanism (1) and the outer wall abuts against the positioning mechanism (4) to position the pipe.

10. The device for locating solid anti-corrosion material on the inner wall of a pipeline according to claim 9, characterized in that, The flexible mechanism (3) is configured as a cylindrical structure and is made of nitrile rubber.

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