A straightening mechanism for pipeline corrosion protection operations

Abstract

This application discloses a straightening mechanism for pipeline corrosion protection operations, comprising: a central screw rod, one end of which is threadedly connected to a first fixed plate, and the other end of which is connected to a second fixed plate; a plurality of scissor arm assemblies are connected between the first and second fixed plates; sliding components are provided at the ends of the scissor arm assemblies away from the first and second fixed plates; and pressure plates are provided at corresponding positions at the ends of the first and second fixed plates. This solution can adapt to different pipeline inner diameters within a certain range, enabling easy passage through weld seams or pipe diameter changes.

Description

Technical Field

[0001] This application relates to the field of pipeline operation technology, and in particular to a straightening mechanism for pipeline corrosion protection operations. Background Technology

[0002] With the development of modern industry, pipeline transportation plays an increasingly important role in socio-economic development as the main transportation route for industrial fluids such as oil, natural gas, desalinated seawater, and chemical raw materials. Pipelines transporting fluids such as oil or natural gas can typically reach hundreds or even thousands of kilometers in length. If pipeline corrosion leads to fluid leaks, it will result in significant economic losses and environmental pollution. Therefore, corrosion prevention and quality testing are crucial aspects of pipeline construction.

[0003] To prevent pipeline corrosion, the inner and outer walls of the pipeline are coated. During the inner coating application, some equipment with power sources located outside the pipeline needs to be connected to external power and air sources using wires, air pipes, and material pipes. In vertical pipeline operations, when passing through right-angle bends, the wires, air pipes, and material pipes rub against the inner coating of the bend, damaging the coating and potentially damaging the protective layers of the wires, air pipes, and material pipes themselves. Furthermore, the significant weight of the equipment generates substantial friction, resulting in considerable power and energy consumption.

[0004] Therefore, there is an urgent need to develop a mechanism that can straighten wires, air pipes, material pipes, etc. and provide rolling friction. Utility Model Content

[0005] An embodiment of this application provides a straightening mechanism for pipeline corrosion protection operations.

[0006] Embodiments of this application provide a straightening mechanism for pipeline corrosion protection operations, comprising:

[0007] A central lead screw, one end of which is threaded to a first fixed plate, and the other end of which is connected to a second fixed plate. Several sets of scissor arm assemblies are connected between the first fixed plate and the second fixed plate. A sliding component is provided at the end of the scissor arm assembly away from the first fixed plate and the second fixed plate.

[0008] Pressure plates are provided at corresponding positions at the ends of the first fixing plate and the second fixing plate.

[0009] In one embodiment, a guide shaft is further provided between the first fixing plate and the second fixing plate, and the guide shaft is parallel to the central lead screw.

[0010] In one embodiment, a spring is fitted on the central lead screw, and a spring sleeve is fitted on the outside of the spring, with one end of the spring sleeve fixedly connected to the second fixing plate.

[0011] In one embodiment, a spring stop is installed at the end of the central lead screw to limit the movement of the spring.

[0012] In one embodiment, a third fixing plate is also included, the guide shaft extending from the second fixing plate and connected to the third fixing plate;

[0013] A short guide shaft is connected between the third fixing plate and the second fixing plate;

[0014] The pressure plate is correspondingly provided on the third fixing plate.

[0015] In one embodiment, a short guide shaft extends out of the third fixing plate, and a shaft clamp is connected to the portion of the short guide shaft that extends out of the third fixing plate.

[0016] In one embodiment, a wire rope clamp is provided on the side of the first fixing plate away from the second fixing plate;

[0017] The wire rope clamp is provided at a position corresponding to the side of the third fixing plate away from the second fixing plate.

[0018] In one embodiment, the inner ring of the pressure plate is further provided with a pressure plate liner.

[0019] In one embodiment, the scissor arm assembly 1 includes a first arm and a second arm. The first arm has a through hole, the width of which is greater than the width of the second arm. The second arm passes through the through hole, and the first arm and the second arm are connected by a pin.

[0020] One end of the first arm is connected to the first fixed plate, one end of the second arm is connected to the second fixed plate, and the other end of both the first arm and the second arm is provided with the sliding component.

[0021] In one embodiment, the sliding component includes a wheel with a rolling ball bearing mounted in the center of the wheel.

[0022] This application has the following advantages over the prior art:

[0023] This solution can straighten the power cables, air pipes, and material pipes that supply energy to the equipment working inside the pipeline, keeping them in the center of the pipeline and away from the pipe wall; and the scissor arm assembly is set with a certain amount of compression to adapt to different pipe inner diameters within a certain range, so that it can easily pass through weld seams or pipe diameter changes. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the straightening mechanism used for pipeline corrosion protection operations according to an embodiment of this application;

[0026] Figure 2 This is a side sectional view of a straightening mechanism used for pipeline corrosion protection operations according to an embodiment of this application;

[0027] Figure 3 This is a side view of a straightening mechanism used for pipeline corrosion protection operations according to an embodiment of this application;

[0028] Figure 4 This is a front view of the straightening mechanism used for pipeline corrosion protection operations according to an embodiment of this application. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connection, detachable connection, or integral connection; for those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] Reference Figures 1-4 This application provides a straightening mechanism for pipeline corrosion protection operations, comprising:

[0034] A central lead screw 8 is provided, one end of which is connected to a first fixed plate 7 by a thread, and the other end of the central lead screw 8 is connected to a second fixed plate 14. Several sets of scissor arm assemblies 1 are connected between the first fixed plate 7 and the second fixed plate 14. A sliding component is provided at the end of the scissor arm assembly 1 away from the first fixed plate 7 and the second fixed plate 14.

[0035] Pressure plates 6 are provided at corresponding positions at the ends of the first fixing plate 7 and the second fixing plate 14.

[0036] Specifically, the number of scissor arm assemblies 1 can be set according to actual needs. Several scissor arm assemblies 1 are evenly arranged around the central lead screw 8. For example, 3 sets are set, and each set is arranged at a 120-degree angle.

[0037] The first fixing plate 7 has an internal thread, and the center screw 8 has an external thread at one end. The first fixing plate 7 and the center screw 8 are connected by threads. When the center screw 8 is rotated, the second fixing plate 14 remains stationary. The first fixing plate 7 moves along the axial direction of the center screw, causing the outer diameter circle formed by the scissor arm assembly 1 to become larger or smaller.

[0038] The sliding component located at the end of the scissor arm assembly 1 can drive the entire straightening mechanism to move within the pipe.

[0039] The wire clamping plate 6 is used to fix the wire. Two wire clamping plates 6 are provided on both the first fixing plate 7 and the second fixing plate 14, respectively for fixing different types of wires. The wire clamping plate 6 can be made of two semicircles spliced ​​together. Connecting plates are connected to both sides of the two semicircles. The two semicircles are connected by bolts and fixed to each fixing plate.

[0040] The straightening mechanism for pipeline corrosion protection provided in this application embodiment can straighten and keep power cables, air pipes, material pipes, etc. that supply energy to equipment working inside the pipeline, keeping them in the center of the pipeline and away from the pipe wall; and the scissor arm assembly is set with a certain amount of compression, which can adapt to different inner diameters of pipelines within a certain range, so that it can easily pass through welds or pipe diameter changes.

[0041] In one embodiment, a guide shaft 9 is further provided between the first fixing plate 7 and the second fixing plate 14, and the guide shaft 9 is parallel to the central lead screw 8.

[0042] Specifically, multiple guide shafts 9 can be provided, such as two. The guide shafts 9 are used to provide guidance and restrict the degree of freedom of rotation of the first fixed plate 7.

[0043] In one embodiment, a spring 17 is sleeved on the central lead screw 8, and a spring sleeve 12 is sleeved on the outside of the spring 17. One end of the spring sleeve 12 is fixedly connected to the second fixing plate 14. A spring baffle 18 is installed at the end of the central lead screw 8 to restrict the movement of the spring 17.

[0044] Specifically, the spring sleeve 12 can be fixed to the second fixed plate 14 with bolts. By setting the spring baffle 18 to restrict the movement of the spring 17, the condition for spring compression is achieved. When the straightening mechanism passes through an obstacle, it overcomes the obstacle by compressing the spring.

[0045] In one embodiment, the straightening mechanism for pipeline corrosion protection operations further includes a third fixing plate 2, and the guide shaft 9 extends from the second fixing plate 14 and connects to the third fixing plate 2;

[0046] A short guide shaft 3 is connected between the third fixing plate 2 and the second fixing plate 14. The short guide shaft 3 extends out of the third fixing plate 2, and the shaft clamp 5 is connected to the portion of the short guide shaft 3 that extends out of the third fixing plate 2.

[0047] Specifically, the number of short guide shafts 3 can be set according to actual needs, for example, two. The short guide shafts 3 are used to provide movement space for the second fixed plate 14 when the spring 17 is compressed. The shaft clamp 5 is used to fix the short guide shafts 3.

[0048] In one embodiment, a wire rope clamp 4 is provided on the side of the first fixing plate 7 away from the second fixing plate 14;

[0049] The wire rope clamp 4 is provided at a position corresponding to the side of the third fixing plate 2 away from the second fixing plate 14.

[0050] Specifically, the wire rope clamp 4 is used to provide a fixed position for the wire rope in equipment that uses a winch as a power source.

[0051] In one embodiment, the inner ring of the pressure plate 6 is further provided with a pressure plate liner 15.

[0052] Specifically, each wire pressure plate 6 has an inner ring with a wire pressure plate liner 15 to protect various wires.

[0053] In one embodiment, the scissor arm assembly 1 includes a first arm 101 and a second arm 102. The first arm 101 has a through hole, the width of which is greater than the width of the second arm 102. The second arm 102 passes through the through hole, and the first arm 101 and the second arm 102 are connected by a pin 11.

[0054] One end of the first arm 101 is connected to the first fixed plate 7, one end of the second arm 102 is connected to the second fixed plate 14, and the other end of both the first arm 101 and the second arm 102 is provided with the sliding component.

[0055] Specifically, a scissor arm fixing member 13 is provided on the first fixing plate 7. The end of the first arm 101 adopts a U-shaped structure, and the U-shaped structure is connected to the scissor arm fixing member 13 by a pin to connect the first arm 101 to the first fixing plate 7. The connection method between the second arm 102 and the second fixing plate 14 adopts the same connection method as that between the first arm 101 and the first fixing plate 7.

[0056] In one embodiment, the sliding assembly includes a wheel 16 with a rolling ball bearing 10 mounted in the center of the wheel 16. By using a wheel with a rolling ball bearing, sliding friction can be converted into rolling friction, which can reduce equipment load and energy consumption.

[0057] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A centralizing mechanism for use in a pipe anticorrosion operation, characterized by, include: A central lead screw (8) is provided, one end of which is connected to a first fixed plate (7) by a thread, and the other end of which is connected to a second fixed plate (14). A plurality of scissor arm assemblies (1) are connected between the first fixed plate (7) and the second fixed plate (14). A sliding component is provided at the end of the scissor arm assembly (1) away from the first fixed plate (7) and the second fixed plate (14). A pressure plate (6) is provided at the corresponding position of the end of the first fixing plate (7) and the second fixing plate (14).

2. The centralizing mechanism for use in a pipe anticorrosion work according to claim 1, characterized by, A guide shaft (9) is also provided between the first fixing plate (7) and the second fixing plate (14), and the guide shaft (9) is parallel to the central lead screw (8).

3. The centralizing mechanism for use in a pipe anticorrosion work according to claim 2, characterized by, A spring (17) is fitted on the central lead screw (8), and a spring sleeve (12) is fitted on the outside of the spring (17). One end of the spring sleeve (12) is fixedly connected to the second fixing plate (14).

4. The centralizing mechanism for use in a pipe anticorrosion work according to claim 3, characterized by, A spring baffle (18) is installed at the end of the central lead screw (8) to restrict the movement of the spring (17).

5. The centralizing mechanism for use in a pipe anticorrosion work according to claim 3, wherein It also includes a third fixing plate (2), the guide shaft (9) extending from the second fixing plate (14) and connected to the third fixing plate (2); A short guide shaft (3) is connected between the third fixing plate (2) and the second fixing plate (14); The pressure plate (6) is correspondingly provided on the third fixing plate (2).

6. The centralizing mechanism for use in a pipe anticorrosion work according to claim 5, wherein The short guide shaft (3) extends out of the third fixing plate (2), and the shaft clamp (5) is connected to the portion of the short guide shaft (3) that extends out of the third fixing plate (2).

7. The centralizing mechanism for use in a pipe anticorrosion work according to claim 5, wherein A wire rope clamp (4) is provided on the side of the first fixing plate (7) away from the second fixing plate (14); The wire rope clamp (4) is provided at a position on the side of the third fixing plate (2) away from the second fixing plate (14).

8. The centralizing mechanism for use in a pipe anticorrosion operation according to claim 5, wherein The inner ring of the pressure plate (6) is also provided with a pressure plate liner (15).

9. The centralizing mechanism for use in a pipe anticorrosion operation according to claim 1, wherein The scissor arm assembly (1) includes a first arm (101) and a second arm (102). The first arm (101) has a through hole, the width of which is greater than the width of the second arm (102). The second arm (102) passes through the through hole, and the first arm (101) and the second arm (102) are connected by a pin (11). One end of the first arm (101) is connected to the first fixed plate (7), one end of the second arm (102) is connected to the second fixed plate (14), and the other end of both the first arm (101) and the second arm (102) is provided with the sliding component.

10. The centralizing mechanism for use in a pipe anticorrosion operation according to any one of claims 1 to 9, characterized in that, The sliding assembly includes a wheel (16) with a rolling ball bearing (10) mounted in the middle of the wheel (16).

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