A tool for disassembling a balanced elbow seal ring

Abstract

This utility model discloses a tooling for disassembling a balance elbow seal ring, belonging to the technical field of seal ring tooling. It includes a central tie rod, a radial rod, a radial contraction assembly, and a sliding hammer assembly. The radial contraction assembly has wedge-shaped locking teeth on its inner side and a conical surface on its outer side. The sliding hammer assembly includes a guide sleeve that mates with the conical surface. The guide sleeve has an impact channel coaxial with the conical surface and is slidably fitted onto the central tie rod. The lower end of the central tie rod has a tensioning end connected by a thread. The radial rod is fixedly located in the middle of the central tie rod. The upper end of the sliding hammer assembly has an impact limiting ring. This utility model, through the linkage between the sliding hammer assembly and the radial contraction assembly, enables the elastic claw to contract radially during impact, and relies on the wedge-shaped locking teeth to firmly engage with the inner wall of the seal ring, achieving stable clamping without damaging the seal ring structure. Then, using the repetitive axial impact force generated by the sliding hammer assembly, the seal ring is completely removed.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring tooling technology, and more specifically, to a tooling for disassembling a balance elbow sealing ring. Background Technology

[0002] In industrial equipment or hydraulic systems, balance elbow seals are widely used in high-pressure sealing environments. Their complex structure often results in installation within space-constrained cavities or bores. When maintenance or replacement is required, disassembling the seal becomes a critical and difficult operation.

[0003] Currently, simple hook tools, pullers, or external clamping pliers are commonly used during the removal of sealing rings, relying on manual operation to hook or pull the sealing rings out of the mounting holes. However, existing technologies have the following main drawbacks:

[0004] Conventional tools can only pull on one side of the sealing ring, and cannot form symmetrical clamping or uniform axial force, which makes the sealing ring prone to warping, tearing or even breaking during the stress process, seriously affecting the integrity of the seal during recycling.

[0005] Sealing rings often age and harden due to long-term service, and may even adhere to the housing, making it difficult for traditional tools to insert them stably or apply force effectively, resulting in a high failure rate for disassembly.

[0006] Existing tools are mostly open mechanical structures, lacking monitoring and control of clamping or adsorption forces, which can easily damage the sealing ring or surrounding structure due to improper operation or excessive force during use.

[0007] Existing disassembly tools are mostly customized for specific models, lack flexible adjustment structures, and are difficult to adapt to various sizes or structural types of sealing rings. Furthermore, they cannot balance disassembly efficiency with the requirement of non-destructive operation.

[0008] In summary, current technology lacks a specialized tooling device that is compact, securely clamped, assisted by adsorption, possesses intelligent control capabilities, and is suitable for high-precision sealing ring disassembly. Therefore, there is an urgent need to develop a new type of sealing ring disassembly tooling that can improve operational safety and universal adaptability while ensuring the integrity of the sealing ring and disassembly efficiency, in order to meet the engineering needs of modern equipment maintenance and sealing component recycling. Utility Model Content

[0009] 1. Technical problems to be solved

[0010] To address the problems existing in the prior art, the purpose of this utility model is to provide a tooling for disassembling balance elbow seals. It can improve operational safety and universal adaptability while ensuring the integrity of the seal and disassembly efficiency, so as to meet the engineering needs of modern equipment maintenance and sealing component recycling.

[0011] 2. Technical Solution

[0012] To solve the above problems, the present invention adopts the following technical solution.

[0013] A tooling for disassembling a balance elbow seal ring includes a central tie rod, a radial rod, a radial contraction assembly, and a sliding hammer assembly. The radial contraction assembly has wedge-shaped locking teeth on its inner side and a conical surface on its outer side.

[0014] The sliding hammer assembly includes a guide sleeve that mates with the conical surface. The guide sleeve has an impact channel coaxial with it inside and is slidably fitted onto the central pull rod.

[0015] When the sliding hammer assembly moves downward along the central tie rod to impact, the guide sleeve pushes the elastic claw to retract radially inward, so that the wedge-shaped locking teeth engage with the inner wall of the sealing ring, achieving reverse self-locking;

[0016] The lower end of the center tie rod is equipped with a tensioning end that is connected by a thread;

[0017] The radial rod is fixedly installed in the middle of the central tie rod;

[0018] The upper end of the sliding hammer assembly is equipped with an impact limiting ring, which limits the axial impact stroke space between the impact limiting ring and the radial rod, and is used to drive the sealing ring to be pulled out of the mounting hole as a whole through multiple impacts.

[0019] Furthermore, the guide sleeve end of the slide hammer assembly is provided with an annular adsorption groove, and a flexible silicone sealing ring is embedded in the adsorption groove.

[0020] Based on the above features, a miniature pressure sensor is integrated at the bottom of the adsorption tank, and the sensor is connected to the vacuum pump control system via a signal line; a closed-loop control system is formed between the vacuum pump and the slide assembly to keep the adsorption force within the range of 5 to 8 MPa.

[0021] In some embodiments, the impact limiting ring is an annular limiting structure made of impact-resistant alloy steel, used to limit the impact stroke of the slide hammer assembly and prevent damage to the central tie rod structure.

[0022] Based on the above characteristics, the central tie rod adopts a hollow structure to reduce the overall weight of the machine and facilitate the subsequent installation of other auxiliary detection components.

[0023] 3. Beneficial effects

[0024] Compared with existing technologies, the advantages of this utility model are:

[0025] 1) This utility model, through the linkage between the sliding hammer assembly and the radial contraction assembly, enables the elastic claw to contract radially during the impact process, and relies on the wedge-shaped locking teeth to firmly engage with the inner wall of the sealing ring, achieving stable clamping without damaging the sealing ring structure; then, with the help of the repeated axial impact force generated by the sliding hammer assembly, the sealing ring is completely removed.

[0026] 2) The flexible silicone adsorption ring and annular adsorption groove structure at the end of the guide sleeve are introduced. Combined with the micro pressure sensor and vacuum pump closed-loop control system, a stable adsorption force can be applied to the outer surface of the sealing ring while clamping the inner wall. The bidirectional clamping improves the overall uniformity of the force on the sealing ring.

[0027] 3) The flexible adsorption structure can suppress local tearing, breakage or deformation of the sealing ring caused by unilateral tension or deformation during disassembly. It is especially suitable for non-destructive disassembly of aged, embrittled or high-value sealing rings, significantly improving the integrity of the sealing ring recovery and the protection effect of the workpiece.

[0028] 4) The miniature pressure sensor in this invention monitors the adsorption force in real time and stabilizes it within the range of 5-8 MPa through a closed-loop system, avoiding damage or falling of the workpiece due to excessive or insufficient adsorption force, thus achieving precise control and safe disassembly. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the tooling for disassembling the balance elbow seal ring according to the present invention;

[0030] Figure 2 This is a schematic diagram of another embodiment of the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Central tie rod; 2. Radial rod; 3. Radial contraction assembly; 4. Sliding hammer assembly; 5. Wedge locking teeth; 6. Conical surface; 7. Guide sleeve; 8. Impact channel; 9. Sealing ring; 10. Tensioning end; 11. Impact limiting ring; 12. Adsorption groove; 13. Flexible silicone sealing ring; 14. Miniature pressure sensor. Detailed Implementation

[0033] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] Example 1:

[0035] A tooling for disassembling a balance elbow seal ring mainly consists of a central tie rod 1, a radial rod 2, a radial contraction assembly 3, and a sliding hammer assembly 4. The radial contraction assembly 3 has wedge-shaped locking teeth 5 on its inner side and a conical surface 6 on its outer side. The conical surface 6 engages with the guide sleeve 7 of the sliding hammer assembly 4. The sliding hammer assembly 4 has an impact channel 8 coaxial with the guide sleeve 7 inside, and the sliding hammer assembly 4 is slidably mounted on the central tie rod 1 through the impact channel 8. A sliding engagement surface is formed between the conical surface 6 of the elastic claw and the guide sleeve 7. When the sliding hammer assembly 4 impacts downwards along the axial direction of the central tie rod 1, the guide sleeve... 7 forces the elastic claw to contract radially inward, and the wedge-shaped locking teeth 5 on the inner side of the elastic claw will then tightly engage with the inner wall of the sealing ring 9, achieving reverse self-locking before axial withdrawal; the lower end of the central pull rod 1 is provided with a tensioning end 10 connected to the elastic claw, and the tensioning end 10 and the elastic claw are fixedly connected by threads; the radial rod 2 is fixedly installed in the middle of the central pull rod 1; the upper end of the sliding hammer assembly 4 is provided with an impact limiting ring 11, and an axial impact stroke space is formed between the impact limiting ring 11 and the radial rod 2; through repeated axial impact, the elastic claw drives the sealing ring 9 to be pulled out of the mounting hole as a whole.

[0036] Example 2

[0037] A tooling for disassembling a balance elbow seal ring mainly consists of a central tie rod 1, a radial rod 2, a radial contraction assembly 3, and a sliding hammer assembly 4. The radial contraction assembly 3 has wedge-shaped locking teeth 5 on its inner side and a conical surface 6 on its outer side. The conical surface 6 engages with the guide sleeve 7 of the sliding hammer assembly 4. The sliding hammer assembly 4 has an impact channel 8 coaxial with the guide sleeve 7 inside, and the sliding hammer assembly 4 is slidably mounted on the central tie rod 1 through the impact channel 8. A sliding fit surface is formed between the conical surface 6 of the elastic claw and the guide sleeve 7. When the sliding hammer assembly 4 impacts downwards along the axial direction of the central tie rod 1, the guide sleeve 7 forces the elastic claw to contract radially inwards. The wedge-shaped locking teeth 5 on the side then tightly engage with the inner wall of the sealing ring 9, achieving reverse self-locking before axial withdrawal; the lower end of the central pull rod 1 is provided with a tensioning end 10 connected to the elastic claw plate, and the tensioning end 10 and the elastic claw plate are fixedly connected by threads; the radial rod 2 is fixedly installed in the middle of the central pull rod 1; the upper end of the sliding hammer assembly 4 is provided with an impact limiting ring 11, and an axial impact stroke space is formed between the impact limiting ring 11 and the radial rod 2; through repeated axial impact, the elastic claw plate drives the sealing ring 9 to be pulled out of the mounting hole as a whole; wherein, the elastic claw plate is made of nickel-titanium alloy material, and its outer diameter in the free state is 2mm smaller than the inner diameter of the sealing ring.

[0038] Compared with Example 1, this example uses a nickel-titanium alloy to make the elastic claw, and limits its outer diameter in the free state to be 2mm smaller than the inner diameter of the sealing ring. This gives the elastic claw good elastic recovery performance and wear resistance, and allows it to enter smoothly when the sealing ring is initially inserted, avoiding jamming caused by too small assembly gap. This improves the applicability of the tooling and the efficiency of operation.

[0039] Example 3

[0040] A tooling for disassembling a balance elbow seal ring mainly consists of a central pull rod 1, a radial rod 2, a radial contraction assembly 3, a sliding hammer assembly 4, and a flexible adsorption sealing structure. The radial contraction assembly 3 has wedge-shaped locking teeth 5 on its inner side and a conical surface 6 on its outer side. The conical surface 6 engages with the guide sleeve 7 of the sliding hammer assembly 4. The sliding hammer assembly 4 has an impact channel 8 coaxial with the guide sleeve 7 inside, allowing the sliding hammer assembly 4 to be slidably mounted on the central pull rod 1 through the impact channel 8. A sliding fit surface is formed between the conical surface 6 of the elastic claw and the guide sleeve 7. When the sliding hammer assembly 4 impacts downwards along the central pull rod 1, the guide sleeve 7 forces the elastic claw to contract radially inwards. The wedge-shaped locking teeth 5 on the inner side of the elastic claw then tightly engage with the inner wall of the seal ring 9, achieving reverse self-locking before axial removal. The lower end of the central pull rod 1 is provided with a tensioning end 10 connected to the elastic claw plate. The tensioning end 10 and the elastic claw plate are fixedly connected by threads. The radial rod 2 is fixedly installed in the middle of the central pull rod 1. The upper end of the slide hammer assembly 4 is provided with an impact limiting ring 11. An axial impact stroke space is formed between the impact limiting ring 11 and the radial rod 2. Through repeated axial impacts, the elastic claw plate drives the sealing ring 9 to be pulled out of the mounting hole as a whole. The guide sleeve 7 of the slide hammer assembly 4 is provided with an annular adsorption groove 12. A flexible silicone sealing ring 13 is embedded in the adsorption groove 12. A miniature pressure sensor 14 is integrated at the bottom of the adsorption groove 12. The miniature pressure sensor 14 is connected to the vacuum pump control system through a signal line. A closed-loop control is formed between the vacuum pump and the slide hammer assembly 4 to stably control the adsorption force within the range of 5-8 MPa.

[0041] Compared with Example 1, this example sets an annular adsorption groove and a flexible silicone sealing ring at the end of the guide sleeve, and integrates a micro pressure sensor and a vacuum pump to form a closed-loop control. This allows the tooling to form a stable adsorption force on the outside of the sealing ring while clamping it, further improving the stability and integrity of the sealing ring during disassembly. It effectively prevents the sealing ring from tearing or leaving residues during disassembly, thus improving disassembly efficiency and safety.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A tooling for disassembling a balance elbow seal ring, comprising a central tie rod (1), a radial rod (2), a radial contraction assembly (3), and a sliding hammer assembly (4), characterized in that: The radial contraction assembly (3) has a wedge-shaped locking tooth (5) on its inner side and a conical surface (6) on its outer side; the sliding hammer assembly (4) includes a guide sleeve (7) that cooperates with the conical surface (6). The guide sleeve (7) has an impact channel (8) that is coaxial with it inside and is slidably fitted onto the central pull rod (1); when the sliding hammer assembly (4) moves axially downward along the central pull rod (1) to impact, the guide sleeve (7) pushes the elastic claw to contract radially inward, so that the wedge-shaped locking tooth (5) bites into the inner wall of the sealing ring (9) to achieve reverse self-locking; the lower end of the central pull rod (1) is provided with a tensioning end (10) connected by a thread; the radial rod (2) is fixedly set in the middle of the central pull rod (1); the upper end of the sliding hammer assembly (4) is provided with an impact limiting ring (11). The impact limiting ring (11) and the radial rod (2) define an axial impact stroke space, which is used to drive the sealing ring (9) to be pulled out of the mounting hole as a whole through multiple impacts.

2. The tooling for disassembling the balance elbow seal ring according to claim 1, characterized in that: The guide sleeve (7) of the slide hammer assembly (4) is provided with an annular adsorption groove (12), and a flexible silicone sealing ring (13) is embedded in the adsorption groove (12).

3. The tooling for disassembling the balance elbow seal ring according to claim 2, characterized in that: A micro pressure sensor (14) is integrated at the bottom of the adsorption tank (12). The sensor is connected to the vacuum pump control system via a signal line. A closed-loop control system is formed between the vacuum pump and the slide assembly (4) to control the adsorption force within the range of 5 to 8 MPa.

4. The tooling for disassembling the balance elbow seal ring according to claim 1, characterized in that: The impact limiting ring (11) is an annular limiting structure made of impact-resistant alloy steel. It is used to limit the impact stroke of the sliding hammer assembly (4) and prevent damage to the structure of the central tie rod (1).

5. The tooling for disassembling the balance elbow seal ring according to claim 1, characterized in that: The central tie rod (1) adopts a hollow structure to reduce the overall weight of the machine and facilitate the subsequent installation of other auxiliary detection components.

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