A bending forming apparatus suitable for RTP ducts

Abstract

The utility model relates to RTP pipeline processing technical field discloses a kind of bending forming equipment suitable for RTP pipeline, including elbow machine main body, the side of elbow machine main body is rotatably connected with bottom plate by hinge, the top of bottom plate both ends is fixedly connected with connecting column, the top of connecting column is fixedly connected with locating ring, locating ring's surface equidistance thread is equipped with locating bolt, the side of locating ring is equipped with hot air component.The utility model preheats RTP pipeline by hot air component, after electric heater heats heat-conducting block, fan blows hot air to pipeline through communication groove and air outlet, enhances its flexibility and deformation compatibility, avoids cold bending defect, guarantees performance and life, locating ring cooperates with the locating bolt of steel ball, stably fixed and reduce friction damage, bottom plate is rotatably connected with elbow machine main body by hinge, angle position is fixed by adjusting structure such as sliding block, sliding slot and limiting groove guarantee stability, hot air component and locating structure integration design simplify process, improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of RTP pipe processing technology, and more specifically to a bending and forming device suitable for RTP pipes. Background Technology

[0002] When laying pipelines in underground pipelines, marine engineering, mines, or inside buildings, obstacles such as rocks, other pipelines, and building foundations are often encountered, or irregular terrain such as hills and bends are encountered. In these situations, the bent and shaped RTP pipeline can play an important role. It can flexibly bypass obstacles, thereby reducing the amount of excavation, reducing the difficulty of construction, and reducing the damage to the surrounding environment. However, most traditional bending machines are designed for metal pipes (such as the pipe bending machine structure disclosed in patent CN102441593A). The external force applied by these machines is concentrated and has high rigidity. Metal pipes themselves have high rigidity and ductility, and can bend through plastic deformation of the material during bending. But RTP pipes are different. Their thermoplastic matrix has limited flexibility at room temperature, and the deformation coordination between the inner and outer walls and the reinforcing layer is poor. This external force from traditional bending machines can cause the reinforcing layer fibers of RTP pipes to break and the braided structure to loosen. If it is a steel strip reinforcing layer, wrinkles and cracks may also occur. This will directly reduce the pressure resistance, impact resistance and service life of the pipe. For example, if the reinforcing layer of an RTP pipe used for oil and gas transportation is damaged, it may cause the risk of high-pressure medium leakage. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bending and forming device suitable for RTP pipes to solve the problems existing in the background art.

[0004] The utility model provides the following technical solution: a bending and forming device suitable for RTP pipes, including a pipe bending machine body, a base plate rotatably connected to the side of the pipe bending machine body via hinges, connecting columns fixedly connected to both ends of the top of the base plate, a positioning ring fixedly connected to the top of the connecting columns, positioning bolts equidistantly threaded on the surface of the positioning ring, a heat exchanger assembly installed on the side of the positioning ring, a sliding groove opened on the side of the pipe bending machine body, a slider slidably connected inside the sliding groove, a connecting plate rotatably connected inside the slider, the end of the connecting plate away from the slider rotatably connected to the bottom of the base plate, and a fixing bolt threadedly connected to the surface of the pipe bending machine body, the end face of the fixing bolt abutting against the surface of the slider.

[0005] Furthermore, the air-heating component includes a sleeve fixedly connected to the side of the positioning ring. The sleeve has a communicating groove inside, and air outlets communicating with the inside of the communicating groove are equidistantly opened on the inner wall of the sleeve. A heat-conducting block is integrally fixedly connected to the surface of the sleeve, and an electric heater is fixedly installed inside the heat-conducting block. A fixing box is fixedly connected to the outer surface of the sleeve, and a fan is fixedly installed inside the fixing box.

[0006] Furthermore, there are two connecting posts and two positioning rings. A steel ball is movably installed inside the positioning bolt near the center of the positioning ring, and the surface of the steel ball extends to the outer surface of the positioning bolt.

[0007] Furthermore, a limiting groove is formed at the bottom of the inner side of the slide, and a protrusion is fixedly connected to the bottom of the slider, with the outer surface of the protrusion slidably connected to the inside of the limiting groove.

[0008] Furthermore, the heat-conducting block is a copper block, and a silicone sealing gasket is fixedly installed on the outer surface of the fan. The fan is sealed inside the fixed box by the silicone sealing gasket. The output end of the fan is close to the heat-conducting block, and the output end of the fan is connected to the inside of the connecting groove. The connecting groove is connected to the inner wall of the sleeve through the air outlet.

[0009] Furthermore, after the base plate is unfolded, it is parallel to the rotation direction of the positioning wheel on the main body of the pipe bending machine, and the slider is U-shaped.

[0010] The technical effects and advantages of this utility model are as follows: 1. This utility model preheats the RTP pipeline using a wind-heating component. An electric heater heats the heat-conducting block, and a fan blows hot air through a connecting groove and an outlet onto the pipeline surface. This enhances the flexibility of the pipeline's thermoplastic matrix after heating, improving the deformation coordination between the inner and outer walls and the reinforcing layer. This avoids problems such as fiber breakage, loosening of the braided structure, or wrinkling and cracking of the steel strip caused by rigid external forces during traditional cold bending. It effectively ensures the pipeline's pressure resistance, impact resistance, and service life. The positioning ring, combined with positioning bolts containing steel balls, not only stably fixes the pipeline but also reduces frictional damage during pipeline movement through the rolling of the steel balls, ensuring the pipeline's positional accuracy and surface integrity before bending.

[0011] 2. In this utility model, the base plate is rotatably connected to the main body of the pipe bending machine via a hinge. Combined with the adjustment structure of the slider, connecting plate and fixing bolts, the unfolding angle and position of the base plate can be fixed. The cooperative design of the sliding groove and the limiting groove can limit the sliding trajectory of the slider and ensure the stability of the base plate during adjustment. The integrated design of the air heating component and the positioning structure allows the preheating and positioning operations to be carried out simultaneously, simplifying the processing flow and improving work efficiency. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the bottom plate and the main body of the pipe bending machine in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the wind-heating component in this utility model.

[0013] The attached diagram is labeled as follows: 1. Main body of the pipe bending machine; 2. Base plate; 3. Connecting column; 4. Positioning ring; 5. Positioning bolt; 6. Air-heating assembly; 61. Sleeve; 62. Connecting groove; 63. Air outlet; 64. Heat-conducting block; 65. Electric heater; 66. Fixing box; 67. Fan; 7. Slide groove; 8. Limiting groove; 9. Sliding block; 10. Connecting plate; 11. Fixing bolt. Detailed Implementation

[0014] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0015] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0016] A bending forming device suitable for RTP pipes includes a pipe bending machine body 1. A base plate 2 is rotatably connected to the side of the pipe bending machine body 1 via a hinge. Connecting columns 3 are fixedly connected to both ends of the top of the base plate 2. A positioning ring 4 is fixedly connected to the top of the connecting column 3. Positioning bolts 5 are installed on the surface of the positioning ring 4 with equidistant threads. A heat exchanger 6 is installed on the side of the positioning ring 4. A slide groove 7 is opened on the side of the pipe bending machine body 1. A slider 9 is slidably connected inside the slide groove 7. A connecting plate 10 is rotatably connected inside the slider 9. The end of the connecting plate 10 away from the slider 9 is rotatably connected to the bottom of the base plate 2. A fixing bolt 11 is threadedly connected to the surface of the pipe bending machine body 1. The end face of the fixing bolt 11 abuts against the surface of the slider 9.

[0017] In this embodiment, the base plate 2 is rotatably connected to the main body 1 of the pipe bending machine via a hinge. Combined with the sliding of the slider 9 in the slide groove 7 and the support of the connecting plate 10, the unfolding angle of the base plate 2 can be flexibly adjusted. The fixing bolt 11 fixes the position of the base plate 2 by pressing against the slider 9, ensuring processing stability. The positioning ring 4 and the positioning bolt 5 achieve precise positioning of the pipe. The air-heating component 6 preheats synchronously. The overall structure integrates the positioning, preheating, and bending processes, reducing operation steps and improving processing efficiency.

[0018] Specifically, the air-heating component 6 includes a sleeve 61 fixedly connected to the side of the positioning ring 4. The sleeve 61 has a connecting groove 62 inside. The inner wall of the sleeve 61 has air outlet holes 63 that communicate with the inside of the connecting groove 62 at equal intervals. A heat-conducting block 64 is integrally fixedly connected to the surface of the sleeve 61. An electric heater 65 is fixedly installed inside the heat-conducting block 64. A fixing box 66 is fixedly connected to the outer surface of the sleeve 61. A fan 67 is fixedly installed inside the fixing box 66.

[0019] In this embodiment, after the electric heater 65 heats the copper heat-conducting block 64, the fan 67 sends hot air into the connecting groove 62 and blows it evenly into the RTP pipe inside the sleeve 61 through the air outlet 63 to achieve local preheating of the pipe. The hot air improves the flexibility of the pipe's thermoplastic matrix, enhances the deformation coordination between the inner and outer walls and the reinforcing layer, avoids defects such as fiber breakage and structural loosening during cold bending, and ensures the mechanical properties of the pipe after bending.

[0020] Specifically, there are two connecting posts 3 and two positioning rings 4. A steel ball is installed inside the positioning bolt 5 near the center of the positioning ring 4, and the surface of the steel ball extends to the outer surface of the positioning bolt 5.

[0021] In this embodiment, the two positioning rings 4 are fixed to the base plate 2 by the connecting column 3 to form a double-point positioning, which improves the stability of the pipeline support; the steel ball at the end of the positioning bolt 5 contacts the pipeline surface, which can not only fix the pipeline position by tightening the positioning bolt 5, but also reduce friction damage when the pipeline moves, thus protecting the integrity of the pipeline's outer surface.

[0022] Specifically, a limiting groove 8 is provided at the bottom of the inner side of the slide groove 7, and a protrusion is fixedly connected to the bottom of the slider 9. The outer surface of the protrusion is slidably connected to the inside of the limiting groove 8.

[0023] In this embodiment, when the slider 9 slides in the slide groove 7, the bottom protrusion is embedded in the limiting groove 8 to restrict the sliding trajectory of the slider 9 and prevent it from leaving the slide groove 9 or deviating. This structure ensures that the connecting plate 10 supports the base plate 2 stably, avoids the base plate 2 from shaking when adjusting the angle or processing, and improves the overall rigidity of the equipment.

[0024] Specifically, the heat-conducting block 64 is a copper block, and a silicone sealing gasket is fixedly installed on the outer surface of the fan 67. The fan 67 is sealed and installed inside the fixed box 66 through the silicone sealing gasket. The output end of the fan 67 is close to the heat-conducting block 64, and the output end of the fan 67 is connected to the inside of the connecting groove 62. The connecting groove 62 is connected to the inner wall of the sleeve 61 through the air outlet 63.

[0025] In this embodiment, the copper heat-conducting block 64 has high thermal conductivity and can quickly transfer the heat of the electric heater 65 to the air; the fan 67 is sealed by a silicone gasket to reduce airflow leakage and ensure that hot air enters the connecting groove 62 efficiently; the air outlets 63 are evenly distributed so that the hot air acts evenly on the surface of the pipe, ensuring a consistent preheating temperature and avoiding bending defects caused by local overheating or insufficient preheating.

[0026] Specifically, after the base plate 2 is unfolded, it is parallel to the rotation direction of the positioning wheel on the main body 1 of the pipe bending machine, and the slider 9 is "U" shaped.

[0027] In this embodiment, after the base plate 2 is unfolded, it is parallel to the rotation direction of the positioning wheel of the pipe bending machine body 1, ensuring that the pipe remains in a straight state between the positioning ring 4 and the positioning wheel of the pipe bending machine, and avoiding the deviation of the bending position due to angular deviation; the "U" shaped slider 9 has good compatibility with the slide groove 7, which enhances the sliding stability, and at the same time provides a stable rotation fulcrum for the connecting plate 10, improving the accuracy of angle adjustment.

[0028] The working principle and usage process of this utility model are as follows: In use, the RTP pipe is passed through the positioning ring 4 and the inside of the sleeve 61 and placed on the driven pressure roller of the pipe bending machine body 1. Then, by rotating the positioning bolt 5, the pipe is fixed at the center of the positioning ring 4, and the RTP pipe is also positioned at the center of the inside of the sleeve 61. Then, by starting the electric heater 65 and the fan 67, external air is drawn into the fixed box 66. After heat exchange through the heat-conducting block 64, the hot air flows through the connecting groove 62 and into the surface of the RTP pipe through the air outlet 63, providing heat to the area where the RTP pipe needs to be bent. After the air heating is completed, the RTP tube is pulled out from the inside of the sleeve 61. When pulling it out, there is no need to rotate the positioning bolt 5. The RTP tube will be directly connected to the steel ball on the positioning bolt 5. After the RTP tube is separated from the inside of the sleeve 61, rotate the fixing bolt 11 counterclockwise to make the fixing bolt 11 separate from the surface of the slider 9. Then rotate the base plate 2 counterclockwise and lift it onto the surface of the tube bending machine body 1. Then readjust the position of the RTP tube so that the heated position of the RTP tube is between the driven pressure roller and the active pressure roller of the tube bending machine body 1. The RTP tube is bent by the downward pressure of the active pressure roller.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A bending and forming device suitable for RTP pipes, comprising a pipe bending machine body (1), characterized in that: The side of the pipe bending machine body (1) is rotatably connected to a base plate (2) via a hinge. Both ends of the top of the base plate (2) are fixedly connected to connecting columns (3). The top of the connecting columns (3) is fixedly connected to a positioning ring (4). The surface of the positioning ring (4) is threaded with positioning bolts (5) at equal intervals. The side of the positioning ring (4) is equipped with a heat pump assembly (6). The side of the pipe bending machine body (1) is provided with a sliding groove (7). The sliding groove (7) is slidably connected to a slider (9). The slider (9) is rotatably connected to a connecting plate (10). The end of the connecting plate (10) away from the slider (9) is rotatably connected to the bottom of the base plate (2). The surface of the pipe bending machine body (1) is threadedly connected to a fixing bolt (11). The end face of the fixing bolt (11) abuts against the surface of the slider (9).

2. The bending and forming equipment suitable for RTP pipes according to claim 1, characterized in that: The air-heating assembly (6) includes a sleeve (61) fixedly connected to the side of the positioning ring (4). A connecting groove (62) is provided inside the sleeve (61). An air outlet (63) communicating with the inside of the connecting groove (62) is provided at equal intervals on the inner wall of the sleeve (61). A heat-conducting block (64) is integrally fixedly connected to the surface of the sleeve (61). An electric heater (65) is fixedly installed inside the heat-conducting block (64). A fixing box (66) is fixedly connected to the outer surface of the sleeve (61). A fan (67) is fixedly installed inside the fixing box (66).

3. The bending and forming equipment suitable for RTP pipes according to claim 1, characterized in that: The number of connecting posts (3) and positioning rings (4) are both two. A steel ball is movably installed inside the positioning bolt (5) near the center of the positioning ring (4), and the surface of the steel ball extends to the outer surface of the positioning bolt (5).

4. A bending and forming device suitable for RTP pipes according to claim 1, characterized in that: The bottom of the slide (7) is provided with a limiting groove (8), and the bottom of the slider (9) is fixedly connected with a protrusion, the outer surface of the protrusion being slidably connected to the inside of the limiting groove (8).

5. A bending and forming device suitable for RTP pipes according to claim 2, characterized in that: The heat-conducting block (64) is a copper block. A silicone sealing gasket is fixedly installed on the outer surface of the fan (67). The fan (67) is sealed and installed inside the fixed box (66) by the silicone sealing gasket. The output end of the fan (67) is close to the heat-conducting block (64). The output end of the fan (67) is connected to the inside of the connecting groove (62). The connecting groove (62) is connected to the inner wall of the sleeve (61) through the air outlet (63).

6. A bending and forming device suitable for RTP pipes according to claim 1, characterized in that: After the base plate (2) is unfolded, it is parallel to the rotation direction of the positioning wheel on the main body (1) of the pipe bending machine, and the slider (9) is "U" shaped.

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