Radial expander

Abstract

The utility model discloses a radial expander, which relates to the technical field of radial expanders and comprises an alloy pipe body, the upper end of the alloy pipe body is connected with a falling object blocking device through threads, an expansion mechanism is arranged on the inner side of the alloy pipe body, a short circuit mechanism is mounted on the expansion mechanism, and a sealing mechanism is mounted in the alloy pipe body at the lower end of the expansion mechanism. The pipe body expander is matched with the center rod, so that the inner diameter of the alloy pipe body can be expanded conveniently, the use convenience of the alloy pipe body is improved, the function of being suitable for tubular elements with various pipe diameters is achieved, the sealer is matched with the sealing pitching ball, it is conveniently guaranteed that impurities do not enter a pipeline, and the service life of the pipeline is prolonged. The whole sealing performance of the pipeline is improved, then the stable sealing function of the pipeline is achieved, and finally the problems that an expander is inconvenient to use and low in sealing performance are solved.

Description

Technical Field

[0001] This utility model relates to the field of radial expander technology, and more particularly to radial expanders. Background Technology

[0002] In long-distance pipeline projects such as oil and natural gas transportation, pipelines often need to cross areas with different geological conditions, such as mountains, swamps, and permafrost zones. These complex environments will cause the pipelines to be subjected to greater stress and displacement during operation. Traditional pipeline connection methods may not be able to effectively cope with this situation, and are prone to leakage or breakage at the connection. Radial expanders can achieve tighter and more flexible connections when connecting pipelines, enabling the connection parts to adapt to a certain degree of displacement and stress changes, thereby improving the overall stability and reliability of the pipeline system.

[0003] The existing expander, being of a fixed size, is not suitable for tubular components of various pipe diameters, causing inconvenience in use. Furthermore, during pipe connection, external debris can easily enter the connection area, reducing the sealing performance and potentially leading to instability in the connection structure, thus affecting the normal operation of the pipeline system. Therefore, these technical problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a radial expander.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a radial expander, comprising an alloy tube body, wherein the upper end of the alloy tube body is connected to a falling object blocker via a thread, and an expansion mechanism is provided inside the alloy tube body, wherein a short-circuiting mechanism is installed on the expansion mechanism, and a closing mechanism is installed inside the alloy tube body at the lower end of the expansion mechanism.

[0006] Preferably, the upper end of the alloy tube is fixed with a first sealing ring at equal intervals.

[0007] Preferably, a central rod is vertically arranged in the middle of the alloy tube body, there is a gap between the central rod and the alloy tube body, and an annular tube wall cleaner is fixed on the central rod, the tube wall cleaner being tightly attached to the inner wall of the alloy tube body.

[0008] Preferably, the sealing mechanism includes a tailpipe positioning plug that is snapped onto the lower end of the alloy tube body, a sealer is installed on the inner side of the upper end of the tailpipe positioning plug, and a buffer spring is provided between the tailpipe positioning plug and the sealer. A through hole is vertically opened in the middle of the sealer and the tailpipe positioning plug, and a sealing ball is installed in the through hole in the middle of the sealer.

[0009] Preferably, the expansion mechanism includes a fixing ring installed inside the alloy tube body, the fixing ring being fixed to one end of the central rod, and a second sealing ring being fixed to the upper end of the fixing ring, with a tube body expander fixed to the outer side of the central rod at the upper end of the second sealing ring.

[0010] Preferably, the shorting mechanism includes a movable ring installed between the pipe expander and the pipe wall cleaner, with connecting rods evenly distributed in an annular pattern at the lower end of the movable ring, a telescopic spring sleeved on the outer side of the connecting rod, and the other end of the connecting rod slidably inserted into the guide hole opened in the shorting block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the tube expander and the central rod facilitates the expansion of the inner diameter of the alloy tube, improving the convenience of using the alloy tube and realizing the function of a tubular element applicable to various pipe diameters. Furthermore, the cooperation between the sealer and the sealing ball ensures that impurities do not enter the pipe, improving the overall sealing performance of the pipe and thus achieving the function of stable pipe sealing. Ultimately, this solves the problems of the expander being inconvenient to use and having low sealing performance. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from a bottom view;

[0015] Figure 3 This is a side view sectional structural diagram of the present invention;

[0016] Figure 4 The present utility model proposes Figure 3 Enlarged schematic diagram of the structure at part A in the middle.

[0017] The numbers in the diagram are: 1. Alloy tube body; 2. Center rod; 3. First sealing ring; 4. Tail tube positioning plug; 5. Tube wall cleaner; 6. Tube body expander; 7. Second sealing ring; 8. Sealer; 9. Sealing ball; 10. Moving ring; 11. Connecting rod; 12. Telescopic spring; 13. Shorting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4 The radial expander of this utility model includes an alloy tube body 1. The upper end of the alloy tube body 1 is connected to a falling object blocker via a thread, and an expansion mechanism is provided on the inner side of the alloy tube body 1. A short-connection mechanism is installed on the expansion mechanism, and a sealing mechanism is installed inside the alloy tube body 1 at the lower end of the expansion mechanism. The alloy tube body 1 facilitates the installation of the expander in the well shaft. The upper end of the alloy tube body 1 is fixed with first sealing rings 3 at equal intervals, which facilitates the tight fit between the alloy tube body 1 and the well shaft. A central rod 2 is vertically arranged in the middle of the alloy tube body 1. There is a gap between the central rod 2 and the alloy tube body 1, and a pipe wall cleaner 5 is fixed annularly on the central rod 2. The pipe wall cleaner 5 is tightly fitted to the inner wall of the alloy tube body 1, which facilitates the cleaning of the inner wall of the alloy tube body 1.

[0020] In this utility model, the sealing mechanism includes a tailpipe positioning plug 4 that is snapped onto the lower end of the alloy tube body 1. A sealing device 8 is installed on the inner side of the upper end of the tailpipe positioning plug 4, and a buffer spring is provided between the tailpipe positioning plug 4 and the sealing device 8. A through hole is vertically opened in the middle of the sealing device 8 and the tailpipe positioning plug 4, and a sealing ball 9 is installed in the through hole in the middle of the sealing device 8. The sealing device 8 and the sealing ball 9 facilitate the sealing of the lower end of the alloy tube body 1. The expansion mechanism includes a fixing ring installed on the inner side of the alloy tube body 1. The fixing ring is fixed to one end of the central rod 2, and the upper end of the fixing ring is fixed to a second... The sealing ring 7 and the outer side of the center rod 2 at the upper end of the second sealing ring 7 are fixed to the tube body expander 6. The fixing ring and the second sealing ring 7 facilitate the sealing of the inside of the alloy tube body 1. The short-connection mechanism includes a moving ring 10 installed between the tube body expander 6 and the tube wall cleaner 5. The lower end of the moving ring 10 is circumferentially distributed with connecting rods 11. The outer side of the connecting rod 11 is fitted with a telescopic spring 12, and the other end of the connecting rod 11 is slidably inserted into the guide hole opened in the short-connection block 13. The connection rod 11 and the short-connection block 13 facilitate the short-connection prompt when the expander is blocked.

[0021] Working Principle: When this utility model is used, firstly, when the radial expander is working, the object blocker at the upper end of the alloy tube 1 prevents debris from entering. Then, the sealing is enhanced by the first sealing ring 3. The tube wall cleaner 5 on the central rod 2 fits against the inner wall of the alloy tube 1 to remove impurities from the tube wall during equipment operation, ensuring a safe working environment. Then, the central rod 2 is connected by a fixing ring, and the second sealing ring 7 assists in sealing. The tube expander 6 expands outward under pressure, enabling the alloy tube 1 to achieve radial expansion. The moving ring 10 of the short-connection mechanism drives the connecting rod 11 to move under pressure. The telescopic spring 12 provides buffering. When the connecting rod 11 is inserted into the guide hole of the short-connection block 13, a short-connection prompt is given after the blockage between components. Then, the tail tube positioning plug 4 is engaged at the lower end of the alloy tube 1. The buffer spring between the sealer 8 and the tail tube positioning plug 4 ensures the stability of the sealing ball 9. When the internal pressure reaches a certain value, the sealing ball 9 seals the lower end of the alloy tube 1, achieving overall sealing and completing the radial expansion and other working tasks.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A radial expander comprising an alloy tube body (1), characterized in that: The alloy pipe body (1) upper end is connected by thread to prevent falling objects, and the alloy pipe body (1) inside is provided with an expansion mechanism, the expansion mechanism is installed with a short circuit mechanism, and the alloy pipe body (1) inside the expansion mechanism lower end is installed with a sealing mechanism.

2. The radial inflator of claim 1, wherein: The alloy pipe body (1) upper end is fixed with a first sealant ring (3) at equal intervals.

3. The radial inflator of claim 2, wherein: The alloy pipe body (1) middle part is vertically provided with a center rod (2), and the center rod (2) and the alloy pipe body (1) are spaced, and the center rod (2) is annularly fixed with a pipe wall cleaner (5), and the pipe wall cleaner (5) is closely attached to the alloy pipe body (1) inner wall.

4. The radial inflator of claim 2, wherein: The sealing mechanism includes a tail pipe positioning plug (4) clamped on the lower end of the alloy pipe body (1), a sealing device (8) is installed on the inner side of the upper end of the tail pipe positioning plug (4), and a buffer spring is arranged between the tail pipe positioning plug (4) and the sealing device (8), the sealing device (8) and the tail pipe positioning plug (4) are vertically provided with a through hole in the middle part, and a sealing ball (9) is installed in the through hole in the middle part of the sealing device (8).

5. The radial inflator of claim 3, wherein: The expansion mechanism includes a fixed ring installed on the inside of the alloy pipe body (1), the fixed ring is fixed to one end of the center rod (2), and the second sealant ring (7) is fixed to the upper end of the fixed ring, the second sealant ring (7) is fixed to the outside of the center rod (2) at the upper end of the center rod (2), and the pipe body expander (6) is fixed to the outside of the center rod (2) at the upper end of the center rod (2).

6. The radial inflator of claim 5, wherein: The short circuit mechanism includes a moving ring (10) installed between the pipe body expander (6) and the pipe wall cleaner (5), the moving ring (10) is annularly and equidistantly connected with connecting rods (11) at the lower end, the connecting rods (11) are provided with telescopic springs (12) on the outside, and the other end of the connecting rods (11) is slidingly inserted into the guide hole of the short circuit block (13).

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