An integrated spiral guide rib automatic centralizing slip hanger

Abstract

The present application relates to the technical fields of downhole hanging device. And disclose a kind of automatic centering slip hanger integrated with spiral guide rib, the hanger is carried with integral cylindrical barrel as base body, outside circumferential equal angle uniform multiple groups of spiral guide rib assembly of equal helix angle, guide rib bottom integral forming large support area trapezoidal buffer base, cooperate with triangular reinforcing rib plate and form enclosed triangular support cavity, and rib plate adopts root gradually thickening structure, can effectively disperse guide rib root concentrated stress, substantially improve the bending resistance, torsion resistance and impact resistance of guide structure. The device is additionally provided with an embedded self-adaptive reinforcing and fixing structure at the junction of the guide rib root, which realizes self-adaptive opening and closing fine adjustment through a hinged three-jaw clamping mechanism, and is matched with a fitted hollow holding structure to provide multi-stage protection and double reinforcement for the guide rib root, thereby avoiding deformation, cracking and delamination failure of the guide rib under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of downhole suspension equipment technology, specifically to an automatic centering slip hanger with integrated spiral guide ribs. Background Technology

[0002] During downhole operations in oil and gas wells, slip hangers are the core tools for suspending, fixing, and positioning downhole tubing. Their guiding and centering performance, root structure strength, and resistance to working conditions directly determine the safety, stability, and tool life of downhole operations.

[0003] Existing conventional slip hangers mostly adopt a simple straight plate guide structure, which has a single structural form and a weak mechanical support system. There is no dedicated buffer, reinforcement and root reinforcement structure. Under the action of high-frequency impact load, eccentric load and complex and harsh working conditions downhole, the root of the guide structure is prone to severe stress concentration. After long-term service, it is prone to micro deformation, delamination, cracking or even root shear fracture, which directly leads to the overall failure of the hanger and causes failures such as tubing positioning deviation and suspension instability.

[0004] Meanwhile, traditional suspension guide structures lack adaptive limit clamping mechanisms, have poor resistance to deformation and loosening at the root, and adopt a single-point independent force-bearing mode. The guide structures cannot be linked to bear loads and cannot form a closed-loop force system. This results in poor force uniformity, low automatic centering accuracy, and problems such as deflection and jamming during the lowering and setting of the tubing string. The operation is unstable and difficult to adapt to the long-term stable operation requirements of deep wells and complex working conditions. Therefore, there is an urgent need to design a slip suspension with high structural strength, adaptive root reinforcement, uniform force-bearing, and high-precision automatic centering. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic centering slip hanger with integrated spiral guide ribs to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic centering slip hanger with integrated spiral guide ribs, comprising a hanger cylinder, spiral guide rib assemblies, and a reinforcing and fixing device. The hanger cylinder is an integral cylindrical load-bearing base, located at the center of the overall guide structure, serving as the mounting carrier and main load-bearing base for all outer guide structures and reinforcing structures. Six sets of spiral guide rib assemblies are evenly arranged around the outer circumference of the hanger cylinder. The spiral guide rib assembly includes six sets of spiral guide ribs, and each set of spiral guide ribs has a trapezoidal buffer base integrally formed at its bottom; The trapezoidal buffer base has a trapezoidal structure that is wider at the top and narrower at the bottom, which effectively increases the bottom support contact area and can fully disperse the concentrated stress at the root of the spiral guide rib, preventing the root of the guide rib from shearing and breaking under load. Each set of spiral guide ribs is matched with a triangular reinforcing rib plate. The triangular reinforcing rib plate is an integrated inclined support structure. One side of the plate is attached to the upper surface of the trapezoidal buffer base, and the other side is attached to the bottom side wall of the spiral guide rib, forming a closed triangular mechanical support structure, which improves the bending, torsion and impact resistance of a single spiral guide rib. The connection between the triangular reinforcing rib plate and the root of the spiral guide rib is equipped with a reinforcing and fixing device. The reinforcing and fixing device is an embedded limiting and locking reinforcement structure, which clamps, limits and reinforces the root of the bottom of the spiral guide rib. Combined with the triangular reinforcing rib plate and the trapezoidal buffer base, it forms a multi-level protection structure to avoid micro-deformation, cracking and delamination failure of the guide rib under impact load and eccentric load, and realizes double reinforcement of the root of the guide rib. The six sets of spiral guide rib assemblies are symmetrically arranged along the circumference of the suspension cylinder. Each set of structures is linked by the force, forming a closed-loop annular truss support system. This transforms the concentrated force at a single point into a uniform force on the whole ring, improving the overall structural strength and operational stability of the suspension.

[0007] As a preferred embodiment of the present invention, the reinforcing fixing device includes a telescopic rod, a pushing disc is fixedly connected to the top of the telescopic rod, and three support columns are uniformly fixed in a ring at the top of the pushing disc. Movable plates are symmetrically hinged to both sides of the top of the three support columns. The movable plates can swing slightly along the top of the support columns to achieve adaptive opening and closing adjustment of the clamping structure.

[0008] As a preferred technical solution of the present invention, the three support columns and the movable plate are all integrally forged from high-strength alloy and have a corrosion-resistant and wear-resistant hardened layer on the surface. They have high rigidity, high toughness and fatigue resistance, can be adapted to complex downhole working conditions, withstand long-term impact, wear and corrosion loads, and ensure the stability of the structure operation.

[0009] As a preferred embodiment of the present invention, each of the three movable plates is equipped with a rotating shaft at its top. The center ends of the three rotating shafts are respectively hinged to one bottom end of the three sets of clamping and fixing blocks. The other bottom ends of the three sets of clamping and fixing blocks are hinged to the inner side of the top of the groove plate. The bottom of the three groove plates is fixedly connected to the top of the pushing disc, and the combination forms an adaptive and finely adjustable three-jaw clamping structure.

[0010] As a preferred technical solution of the present invention, the inner sidewalls of the three sets of clamping and fixing blocks are provided with groove hollow structures. The groove hollow structures match and fit precisely with the bottom arc structure of the spiral guide rib, increasing the clamping contact area and forming a close-fitting clamping and limiting position on the bottom of the spiral guide rib, thus avoiding local stress concentration.

[0011] As a preferred technical solution of the present invention, the bottom surface of the trapezoidal buffer base is a planar support structure, and the area of ​​the bottom surface of the trapezoidal buffer base is larger than the cross-sectional area of ​​the root of the spiral guide rib; the trapezoidal buffer base and the outer wall of the suspension cylinder are integrally cast, with no assembly gap, good load-bearing consistency, and can effectively transfer and disperse the radial and axial loads borne by the spiral guide rib.

[0012] As a preferred technical solution of the present invention, the outer wall of the triangular reinforcing rib plate and the spiral guide rib and the upper surface of the trapezoidal buffer base together form a closed triangular support cavity; the triangular reinforcing rib plate adopts a gradually thickened structure, with the thickness increasing from the outside to the root, which strengthens the support strength of the weak area at the root of the guide rib and improves the overall deformation resistance.

[0013] As a preferred technical solution of the present invention, the six sets of spiral guide ribs have the same spiral helix angle and are evenly distributed at equal angles along the circumference of the hanger cylinder; the spiral guide ribs, triangular reinforcing ribs, trapezoidal buffer bases and reinforcing fixing devices are matched and arranged one-to-one to form a uniform and symmetrical overall force-bearing structure, which effectively ensures the automatic centering accuracy and running stability of the hanger during the lowering and setting process.

[0014] Compared with the prior art, the beneficial effects of the present invention are: An automatic centering clamping device with integrated spiral guide ribs drives the vertical displacement of a push disk fixed at its top via the extension and retraction of a telescopic rod. This push disk synchronously moves the support column at the top, causing a small swing of the movable plate hinged at the top of the support column. Utilizing the swing of the movable plate in conjunction with the hinge linkage of the rotating shaft, the clamping fixing block is pulled to make angle fine adjustments using the hinged end between its bottom and the grooved plate as the fulcrum. Ultimately, the synchronous opening and closing of the three sets of clamping fixing blocks is achieved, completing the adaptive opening and closing fine adjustment operation of the clamping structure.

[0015] An automatic centering slip hanger with integrated spiral guide ribs features a grooved, hollowed-out structure on the inner side of the clamping block that precisely matches the arc-shaped structure at the bottom of the spiral guide rib. This allows for complete contact with the outer wall of the guide rib, significantly increasing the clamping contact area, preventing localized stress concentration, and achieving a secure, snug fit. Furthermore, the support column and movable plate are forged from high-strength alloy and treated with anti-corrosion and wear-resistant hardening, enabling long-term adaptability to complex and harsh working conditions in downhole environments characterized by moisture, abrasion, and impact. This ensures long-term stable operation of the reinforced structure and significantly extends its service life.

[0016] An automatic centering slip hanger with integrated spiral guide ribs features a trapezoidal buffer base, wider at the top and narrower at the bottom, integrally formed at the base of the spiral guide ribs. This trapezoidal base structure effectively increases the contact area between the root of the guide rib and the hanger cylinder, efficiently dispersing concentrated stress at the root of the spiral guide rib and preventing shear fracture under load. Simultaneously, a matching triangular reinforcing rib plate, together with the trapezoidal buffer base and spiral guide rib, forms a closed triangular mechanical support structure. Utilizing the stable mechanical properties of the triangular structure, this significantly improves the bending, torsional, and impact resistance of a single spiral guide rib.

[0017] An automatic centering slip hanger with integrated spiral guide ribs uses a gradually thickened structure at the root of the triangular reinforcing rib plate to specifically strengthen the weak area at the root of the guide rib, effectively improving the defects of traditional guide ribs that are prone to deformation and damage under stress, and significantly increasing the load-bearing capacity and structural stability of the single guide structure. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention. Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the spiral guide rib and reinforcing fixing device of the present invention; Figure 4 This is a schematic diagram of the overall spiral guide rib assembly of the present invention; Figure 5 This is a schematic diagram of the overall strengthening and fixing device of the present invention; Figure 6 This is a schematic diagram showing the connection relationship between the upper and lower movable plates of the present invention; Figure 7 This is a schematic diagram showing the internal and external connection relationship of the clamping and fixing block of the present invention.

[0019] In the diagram: 10. Suspension cylinder; 20. Spiral guide rib assembly; 201. Spiral guide rib; 202. Trapezoidal buffer base; 203. Triangular reinforcing rib plate; 30. Reinforcing fixing device; 301. Telescopic rod; 302. Pushing disc; 303. Support column; 304. Movable plate; 305. Rotating shaft; 306. Clamping fixing block; 307. Groove plate; 308. Groove hollow structure. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please refer to Figure 1-2 An automatic centering slip hanger with integrated spiral guide ribs includes a hanger cylinder 10, spiral guide rib assemblies 20, and a reinforcing and fixing device 30. The hanger cylinder 10 is an integral cylindrical load-bearing base, located at the center of the overall guide structure, serving as the installation carrier and main load-bearing base for all outer guide structures and reinforcing structures. Six sets of spiral guide rib assemblies 20 are evenly arranged around the outer circumference of the hanger cylinder 10. The spiral guide rib assembly 20 includes six sets of spiral guide ribs 201, and each set of spiral guide ribs 201 has a trapezoidal buffer base 202 integrally formed at its bottom. The trapezoidal buffer base 202 has a trapezoidal structure that is wider at the top and narrower at the bottom, which effectively increases the bottom support contact area and can fully disperse the concentrated stress at the root of the spiral guide rib 201, preventing the root of the guide rib from shearing and breaking under load. Each set of spiral guide ribs 20 is matched with a triangular reinforcing rib plate 203. The triangular reinforcing rib plate 203 is an integrated inclined support structure. One side of the plate is attached to the upper surface of the trapezoidal buffer base 202, and the other side is attached to the bottom side wall of the spiral guide rib 201, forming a closed triangular mechanical support structure, which improves the bending resistance, torsion resistance and impact resistance of a single spiral guide rib 201. A reinforcing and fixing device 30 is installed at the connection between the triangular reinforcing rib plate 203 and the root of the spiral guide rib 201. The reinforcing and fixing device 30 is an embedded limiting and locking reinforcement structure that clamps, limits and reinforces the root of the bottom end of the spiral guide rib 201. Combined with the triangular reinforcing rib plate 203 and the trapezoidal buffer base 202, it forms a multi-level protection structure to avoid micro-deformation, cracking and delamination failure of the guide rib under impact load and eccentric load, and realizes double reinforcement of the root of the guide rib. The six sets of spiral guide rib assemblies 20 are symmetrically arranged around the circumference of the suspension cylinder 10. The structures of each set are linked by the force, forming a closed-loop ring truss support system, which transforms the single-point concentrated force into the whole ring uniform force, thereby improving the overall structural strength and operational stability of the suspension.

[0022] Example 2: Based on Example 1, as follows Figure 3-7As shown, the reinforcing fixing device 30 includes a telescopic rod 301. A pushing disk 302 is provided at the top of the telescopic rod 301, and the top of the telescopic rod 301 is fixedly connected to the bottom of the pushing disk 302. Three support columns 303 are evenly arranged in a ring at the top of the pushing disk 302, and the top of the pushing disk 302 is evenly fixed to the bottom of the three support columns 303. Movable plates 304 are symmetrically arranged on both sides of the top of the three support columns 303, and the top sides of the three support columns 303 are symmetrically hinged to the inner bottom of the movable plates 304. The movable plates 304 can swing slightly along the top of the support columns 303 to realize the adaptive opening and closing adjustment of the clamping structure.

[0023] The three support columns 303 and the movable plate 304 are all integrally forged from high-strength alloy and have a corrosion-resistant and wear-resistant hardened layer on the surface. They have high rigidity, high toughness and fatigue resistance, can adapt to complex downhole working conditions, withstand long-term impact, wear and corrosion loads, and ensure the stability of the structure.

[0024] Each of the three movable plates 304 has a rotating shaft 305 at its top end, and the top ends of the three movable plates 304 are assembled with both ends of the rotating shaft 305. The center ends of the three rotating shafts 305 are respectively hinged to one bottom end of the three sets of clamping and fixing blocks 306. The other bottom ends of the three sets of clamping and fixing blocks 306 are hinged and assembled to the inner side of the top of the groove plate 307. The bottoms of the three groove plates 307 are all fixedly connected to the top of the push disk 302, forming an adaptive and finely adjustable three-jaw clamping structure. The telescopic rod 301 extends and retracts, driving the vertical displacement of the push disk 302 fixed at its top. This pushes the disk 302 to simultaneously move the support column 303 at the top, causing the movable plate 304 hinged at the top of the support column 303 to swing slightly. Utilizing the swing of the movable plate 304 in conjunction with the hinge linkage of the rotating shaft 305, the clamping block 306 is pulled to make minor angle adjustments using its bottom hinged end with the groove plate 307 as the fulcrum. Ultimately, this achieves the synchronous opening and closing of the three sets of clamping blocks 306, completing the adaptive opening and closing fine-tuning operation of the clamping structure.

[0025] The inner walls of all three sets of clamping and fixing blocks 306 are provided with grooved hollow structures 308. These grooved hollow structures 308 match and precisely fit the bottom arc-shaped structure of the spiral guide rib 201, increasing the clamping contact area and forming a snug, confining fit against the bottom of the spiral guide rib 201, thus avoiding localized stress concentration. By providing grooved hollow structures 308 on the inner side of the clamping and fixing blocks 306 that precisely match the bottom arc-shaped structure of the spiral guide rib 201, they can completely fit against the outer wall of the guide rib, significantly increasing the clamping contact area, avoiding localized stress concentration, and achieving a snug, stable fit. Furthermore, the support column 303 and the movable plate 304 are forged from high-strength alloy and treated with anti-corrosion and wear-resistant hardening, allowing them to withstand the complex and harsh working conditions of downhole environments, including moisture, wear, and impact, ensuring long-term stable operation of the reinforced structure and significantly extending its service life.

[0026] The trapezoidal buffer base 202 has a planar support structure at its bottom, with a bottom area larger than the cross-sectional area of ​​the root of the spiral guide rib 201. The trapezoidal buffer base 202 and the outer wall of the hanger cylinder 10 are integrally cast, with no assembly gaps, ensuring good load-bearing consistency and effectively transferring and dispersing the radial and axial loads borne by the spiral guide rib 201. By integrally forming a trapezoidal buffer base 202 (wider at the top and narrower at the bottom) at the bottom of the spiral guide rib 201, the large trapezoidal base support structure effectively increases the support contact area between the root of the guide rib and the hanger cylinder 10, efficiently dispersing the concentrated stress at the root of the spiral guide rib 201 and preventing shear fracture failure of the guide rib under load. Simultaneously, the matching triangular reinforcing rib plate 203, together with the trapezoidal buffer base 202 and the spiral guide rib 201, forms a closed triangular mechanical support structure. Utilizing the stable mechanical properties of the triangular structure, this significantly improves the bending, torsional, and impact resistance of a single spiral guide rib 201.

[0027] The outer walls of the triangular reinforcing rib plate 203 and the spiral guide rib 201, together with the upper surface of the trapezoidal buffer base 202, form a closed triangular support cavity. The triangular reinforcing rib plate 203 adopts a gradually thickening structure, with the thickness increasing from the outside to the root, strengthening the support strength of the weak area at the root of the guide rib and improving the overall deformation resistance. By adopting a gradually thickening structure at the root of the triangular reinforcing rib plate 203, the weak area at the root of the guide rib is specifically strengthened, effectively improving the defects of traditional guide ribs that are prone to deformation and damage under stress, and significantly increasing the load-bearing capacity and structural stability of the single guide structure.

[0028] The six sets of spiral guide ribs 201 have the same spiral helix angle and are evenly distributed at equal angles along the circumference of the hanger cylinder 10; the spiral guide ribs 201, triangular reinforcing ribs 203, trapezoidal buffer bases 202 and reinforcing fixing devices 30 are matched and arranged one-to-one to form a uniform and symmetrical overall force-bearing structure, which effectively ensures the automatic centering accuracy and operational stability of the hanger during the lowering and setting process.

[0029] The working principle of this invention is as follows: During operation, the automatic guidance and automatic centering functions of the downhole lowering and setting process are achieved by relying on six sets of spiral guide rib assemblies 20 that are evenly arranged around the outer circumference of the hanger cylinder 10. The six sets of spiral guide ribs 201 included in the spiral guide rib assembly 20 are stably supported by the trapezoidal buffer base 202 integrally formed at the bottom. The trapezoidal buffer base 202 with a structure that is wider at the top and narrower at the bottom has a larger bottom support contact area, which can effectively transmit and disperse the radial and axial loads borne by the spiral guide ribs 201 during operation, greatly disperse the stress concentrated at the root of the spiral guide ribs 201, and prevent the root of the guide ribs from shearing and breaking under load. Meanwhile, the trapezoidal buffer base 202 and the outer wall of the suspension cylinder 10 adopt an integrated casting structure with no assembly gaps and strong load-bearing consistency. Together with the triangular reinforcing rib plate 203, which is attached to the upper surface of the trapezoidal buffer base 202 on one side and the bottom side wall of the spiral guide rib 201 on the other side, they form a closed triangular mechanical support cavity. The triangular reinforcing rib plate 203 adopts a gradually thickened structure that increases from the outside to the root, which specifically strengthens the support strength of the weak area at the root of the spiral guide rib 201, effectively improving the bending, torsion and impact deformation resistance of a single spiral guide rib 201. To further enhance the connection strength and failure resistance of the root of the spiral guide rib 201, an embedded limit locking structure reinforcement and fixing device 30 is installed at the connection position between the triangular reinforcing rib plate 203 and the root of the spiral guide rib 201. By strengthening the fixing device 30 and forming a multi-level three-dimensional protection structure with the triangular reinforcing rib plate 203 and the trapezoidal buffer base 202, the root of the spiral guide rib 201 is double-strengthened, effectively resisting downhole impact loads and eccentric loads, and preventing the guide rib from experiencing micro-deformation, cracking, delamination and other failure problems. During operation, the reinforcing fixing device 30 relies on the telescopic power of the telescopic rod 301 to drive the push disk 302 fixed at its top to move vertically. The push disk 302 simultaneously drives the three support columns 303 that are uniformly fixed in a ring at the top to move as a whole, causing the movable plate 304 hinged on both sides of the top of the support column 303 to swing slightly. By utilizing the swing motion of the movable plate 304 in conjunction with the hinge linkage of the rotating shaft 305, the traction clamping and fixing block 306 uses its bottom hinge end with the inner top of the groove plate 307 as the fulcrum to make fine-tuning of the angle. The three groove plates 307, whose bottoms are fixed to the top of the push disk 302, provide stable mounting fulcrums for the clamping structure, and finally realize the synchronous adaptive opening and closing fine-tuning of the three sets of clamping and fixing blocks 306. The grooved hollow structure 308 on the inner side of the clamping and fixing block 306 precisely matches the arc-shaped structure at the bottom of the spiral guide rib 201, increasing the clamping contact area and forming a full-coverage, close-fitting, and limiting clamping at the root of the spiral guide rib 201, completely avoiding local stress concentration and stably achieving root reinforcement and locking; in addition, the support column 303 and the movable plate 304 are integrally forged from high-strength alloy and treated with anti-corrosion and wear-resistant hardening, which can withstand the impact, wear and corrosion loads of complex downhole working conditions for a long time, ensuring the long-term stable operation of the reinforced structure; In the overall structure, the six sets of spiral guide ribs 201 maintain the same spiral rise angle and are symmetrically distributed at equal angles along the circumference of the suspension cylinder 10. The triangular reinforcing ribs 203, trapezoidal buffer bases 202, and reinforcing fixing devices 30 of each set of spiral guide ribs 20 correspond and match one-to-one, and are linked by force. This transforms the original single-point concentrated force mode of a single guide unit into an overall ring uniform force mode, forming a closed-loop ring truss support system. While ensuring high-precision automatic centering and smooth operation of the suspension during lowering and setting operations, this comprehensively improves the overall structural strength and deformation resistance of the suspension.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic centering slip hanger with integrated spiral guide ribs, comprising a hanger cylinder (10), a spiral guide rib assembly (20), and a reinforcing fixing device (30), characterized in that: The suspension cylinder (10) is an integral cylindrical bearing base, located at the center of the overall guide structure, serving as the installation carrier and main load-bearing base for all outer guide structures and reinforcing structures; the six sets of spiral guide rib assemblies (20) are evenly arranged around the outer circumference of the suspension cylinder (10). The spiral guide rib assembly (20) includes six sets of spiral guide ribs (201), and each set of spiral guide ribs (201) has a trapezoidal buffer base (202) integrally formed at the bottom. The trapezoidal buffer base (202) has a trapezoidal structure that is wider at the top and narrower at the bottom, which effectively increases the bottom support contact area and can fully disperse the concentrated stress at the root of the spiral guide rib (201). Each set of spiral guide ribs (20) is matched with a triangular reinforcing rib plate (203). The triangular reinforcing rib plate (203) is an integrated inclined support structure. One side of the plate is attached to the upper surface of the trapezoidal buffer base (202), and the other side is attached to the bottom side wall of the spiral guide rib (201), forming a closed triangular mechanical support structure, which improves the bending resistance, torsion resistance and impact resistance of a single spiral guide rib (201). The connection between the triangular reinforcing rib plate (203) and the root of the spiral guide rib (201) is equipped with a reinforcing fixing device (30). The reinforcing fixing device (30) is an embedded limiting and locking reinforcement structure that clamps, limits, and reinforces the root of the bottom end of the spiral guide rib (201). It is combined with the triangular reinforcing rib plate (203) and the trapezoidal buffer base (202) to form a multi-level protection structure. The six sets of spiral guide rib assemblies (20) are symmetrically arranged around the circumference of the suspension cylinder (10). Each set of structures is linked by force, forming a closed-loop ring truss support system, which transforms the single-point concentrated force into the overall ring uniform force.

2. The automatic centering slip hanger with integrated spiral guide ribs according to claim 1, characterized in that: The reinforcing fixing device (30) includes a telescopic rod (301), a push disk (302) is fixedly connected to the top of the telescopic rod (301), and three support columns (303) are evenly fixed in a ring at the top of the push disk (302). Movable plates (304) are symmetrically hinged on both sides of the top of the three support columns (303), and the movable plates (304) can swing slightly along the top of the support columns (303).

3. The automatic centering slip hanger with integrated spiral guide ribs according to claim 2, characterized in that: The three support columns (303) and the movable plate (304) are all integrally forged from high-strength alloy and have a corrosion-resistant and wear-resistant hardened layer on their surface.

4. The automatic centering slip hanger with integrated spiral guide ribs according to claim 2, characterized in that: The top of each of the three movable plates (304) is equipped with a rotating shaft (305). The center ends of the three rotating shafts (305) are respectively hinged to one end of the bottom of the three sets of clamping and fixing blocks (306). The other end of the bottom of the three sets of clamping and fixing blocks (306) is hinged to the inner side of the top of the groove plate (307). The bottom of the three groove plates (307) is fixedly connected to the top of the push disc (302).

5. The automatic centering slip hanger with integrated spiral guide ribs according to claim 4, characterized in that: The inner walls of the three sets of clamping and fixing blocks (306) are provided with grooved hollow structures (308). The grooved hollow structures (308) match and fit precisely with the bottom arc structure of the spiral guide rib (201), increasing the clamping contact area and forming a close-fitting clamping limit on the bottom of the spiral guide rib (201).

6. The automatic centering slip hanger with integrated spiral guide ribs according to claim 1, characterized in that: The bottom surface of the trapezoidal buffer base (202) is a planar support structure, and the bottom area of ​​the trapezoidal buffer base (202) is larger than the cross-sectional area of ​​the root of the spiral guide rib (201); the trapezoidal buffer base (202) and the outer wall of the hanger cylinder (10) are integrally cast.

7. The automatic centering slip hanger with integrated spiral guide ribs according to claim 1, characterized in that: The outer walls of the triangular reinforcing rib plate (203) and the spiral guide rib (201) together with the upper surface of the trapezoidal buffer base (202) form a closed triangular support cavity; the triangular reinforcing rib plate (203) adopts a gradually thickened structure, with the thickness increasing from the outside to the root.

8. The automatic centering slip hanger with integrated spiral guide ribs according to claim 1, characterized in that: The six sets of spiral guide ribs (201) have the same spiral angle and are evenly distributed along the circumference of the hanger cylinder (10); the spiral guide ribs (201), triangular reinforcing ribs (203), trapezoidal buffer base (202) and reinforcing fixing device (30) are matched and arranged one by one.

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