Plug-in locking seal wear sleeve expansion joint structure

Abstract

This utility model relates to an expansion joint structure, specifically a wear-resistant sleeve expansion joint structure with insert locking and sealing, comprising an outer cylinder and an inner cylinder. A layer of anti-friction filling material is provided between the outer cylinder and the inner cylinder. A flange connecting plate and a mounting bracket for bolting the flange connecting plate are connected to the inner cylinder. One end of the mounting bracket is connected to a damping insertion mechanism and an insertion mechanism disposed on one side of the damping insertion mechanism. The beneficial effects of this utility model are: through the cooperation between the damping insertion mechanism and the insertion mechanism, the inner cylinder and outer cylinder inside the sleeve expansion joint are installed using an insert locking method, enabling quick disassembly during routine maintenance or emergency handling. Simultaneously, relative sliding between the inner and outer cylinders is possible. When the size or position of the pipeline changes due to thermal expansion and contraction, vibration, or other external forces, the sleeve expansion joint can respond promptly and fully absorb the stress generated by these changes.

Description

Technical Field

[0001] This utility model relates to an expansion joint structure, specifically a wear-resistant sleeve expansion joint structure with insert locking and sealing. Background Technology

[0002] Sleeve expansion joints, also known as pipe expansion joints, are compensation devices for hot fluid pipelines. They are mainly used to absorb and compensate for axial thermal expansion displacement that occurs after the laying of straight pipelines. They are compensators that are directly installed in any pipeline transporting non-corrosive unidirectional or multidirectional fluids. Sleeve expansion joints are widely used in pipelines in industries such as urban heating, metallurgy, mining, power generation, petrochemicals, and construction.

[0003] The structure of a sleeve expansion joint generally includes an outer cylinder and an inner cylinder. One end of the inner cylinder extends into the outer cylinder. Sealing packing is provided between the outer cylinder and the inner cylinder. Sleeve-type compensators are further divided into unidirectional and bidirectional compensation structures. The characteristic of the bidirectional type is that no matter which end of the compensator the medium flows in from, the sliding sleeves at both ends of the compensator can always slide freely, so that the outer cylinder and the inner cylinder can slide to compensate according to the changes in the pipeline, achieving bidirectional compensation and increasing the compensation amount.

[0004] Currently, the outer and inner cylinders of sleeve expansion joints are usually fixed by welding, flanges, and bolts. Tools are required when assembling and disassembling the outer and inner cylinders, which makes the installation and disassembly of traditional expansion joints complicated, time-consuming, and labor-intensive, which is not conducive to the daily maintenance and emergency handling of equipment. In pipeline systems, the size and position of pipelines are affected by factors such as thermal expansion and contraction, vibration, and settlement, and the compensation capacity of traditional expansion joints is difficult to meet the stability and reliability requirements of pipeline systems. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant sleeve expansion joint structure with insert locking and sealing, so as to solve the problems mentioned in the background art: the traditional expansion joint has complicated installation and disassembly steps, which are time-consuming and labor-intensive, and are not conducive to the daily maintenance and emergency handling of equipment; in the pipeline system, the pipeline is affected by factors such as thermal expansion and contraction, vibration, and settlement, and the size and position will change. The compensation capacity of the traditional expansion joint is difficult to meet the requirements of pipeline system for stability and reliability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wear-resistant sleeve expansion joint structure with insert locking seal includes an outer cylinder and an inner cylinder. A layer of anti-friction filling material is provided between the outer cylinder and the inner cylinder. A flange connecting plate and a mounting bracket for bolting to the flange connecting plate are connected to the inner cylinder. A damping insertion mechanism and an inserting mechanism are provided on one side of the damping insertion mechanism are connected to one side of the outer cylinder. A locking mechanism is connected to one side of the outer cylinder.

[0008] The insertion mechanism and the locking mechanism are inserted into each other, and the insertion mechanism is slidably mounted on the damping side.

[0009] The wear-resistant sleeve expansion joint structure with insertion locking and sealing as described above: The damping insertion mechanism includes two cylinders connected to one side of the mounting bracket and a sliding groove opened in the cylinder, and a first spring is provided in the sliding groove.

[0010] The wear-resistant sleeve expansion joint structure with insertion locking and sealing as described above: the damping insertion mechanism further includes a plunger rod slidably mounted on the slide groove and a square frame disposed on one side of the plunger rod, the plunger rod being connected to one end of the first spring, and the square frame sliding on one end of the cylinder.

[0011] The wear-resistant sleeve expansion joint structure with insertion locking and sealing as described above: The insertion mechanism includes a slot opened on one side of the square frame and beveled fixing blocks slidably installed on the upper and lower sides of the slot, and the same second spring is provided between the two beveled fixing blocks.

[0012] The wear-resistant sleeve expansion joint structure with insert locking seal as described above: the locking mechanism includes two limiting frames disposed on one side of the outer cylinder and a square groove opened on the limiting frames. Two limiting blocks and a slot opened on the limiting blocks are symmetrically installed on one side of the limiting frames.

[0013] The wear-resistant sleeve expansion joint structure with insert locking seal as described above: the locking mechanism further includes an installation component connected between two limit blocks and a bidirectional lead screw rotatably mounted on the installation component, with push blocks threaded to both ends of the bidirectional lead screw.

[0014] The wear-resistant sleeve expansion joint structure with insertion locking and sealing as described above: two push blocks slide inside two limit blocks respectively, two push blocks are respectively attached to one end of two beveled fixing blocks, and two beveled fixing blocks are respectively engaged with two slots.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Through the cooperation between the damping plug-in mechanism and the plug-in mechanism, the inner and outer cylinders of the sleeve expansion joint are installed in a plug-in locking manner. This design greatly improves the convenience of disassembly, enabling quick disassembly during routine maintenance or emergency handling. At the same time, the inner and outer cylinders can slide relative to each other. This unique sliding performance allows the sleeve expansion joint to flexibly follow various changes in the pipeline and perform sliding compensation. When the size or position of the pipeline changes due to thermal expansion and contraction, vibration or other external forces, the sleeve expansion joint can respond in a timely and accurate manner, fully absorbing the stress generated by these changes.

[0017] The invention also includes a friction-resistant filling material layer between the inner and outer cylinders, which can prevent friction between the inner and outer cylinders after installation, and the filling material layer can improve the overall sealing performance. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the wear-resistant sleeve expansion joint with insert locking seal.

[0019] Figure 2 A side view of the structure of a wear-resistant sleeve expansion joint with a plug-in locking seal.

[0020] Figure 3 A schematic diagram of the internal structure of a wear-resistant sleeve expansion joint with a locking seal for insertion.

[0021] Figure 4 A schematic diagram of the inner cylinder, damping insertion mechanism, and insertion mechanism in a wear-resistant sleeve expansion joint structure for insertion locking and sealing.

[0022] Figure 5 A schematic diagram of the damping insertion mechanism and the insertion mechanism in a wear-resistant sleeve expansion joint structure for insertion locking and sealing.

[0023] Figure 6 A schematic diagram of the damping insertion mechanism and the internal structure of the insertion mechanism in a wear-resistant sleeve expansion joint structure for insertion locking and sealing.

[0024] Figure 7 A schematic diagram of the damping insertion mechanism, insertion mechanism, and locking mechanism in the insertion state of a wear-resistant sleeve expansion joint structure for insertion locking seal.

[0025] Figure 8 A structural diagram showing the disassembly of the damping insertion mechanism, insertion mechanism, and locking mechanism in a wear-resistant sleeve expansion joint structure for insertion locking seal.

[0026] Figure 9 A schematic diagram of the outer cylinder and locking mechanism in a wear-resistant sleeve expansion joint structure for insert locking and sealing.

[0027] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Filling material layer; 4. Flange connection plate; 5. Mounting bracket; 6. Cylinder body; 7. Slide groove; 8. First spring; 9. Piston rod; 10. Square frame; 11. Slot; 12. Angled fixing block; 13. Second spring; 14. Limiting frame; 15. Square groove; 16. Limiting block; 17. Slot; 18. Two-way lead screw; 19. Push block. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-9 As an embodiment of this utility model, the insert-locking and sealing wear-resistant sleeve expansion joint structure includes an outer cylinder 1 and an inner cylinder 2. A friction-resistant filling material layer 3 is provided between the outer cylinder 1 and the inner cylinder 2. A flange connecting plate 4 and a mounting bracket 5 that is bolted to the flange connecting plate 4 are connected to the inner cylinder 2. A damping insertion mechanism and an insertion mechanism provided on one side of the damping insertion mechanism are connected to one side of the outer cylinder 1. A locking mechanism is connected to one side of the outer cylinder 1.

[0030] The insertion mechanism and the locking mechanism are inserted into each other, and the insertion mechanism is slidably mounted on the damping side.

[0031] In this embodiment, the inner cylinder 2 and outer cylinder 1 of the sleeve expansion joint are installed using a plug-in locking method. During installation, the inner cylinder 2 is pushed in from one side of the outer cylinder 1. Then, the damping plug-in mechanism and the plug-in mechanism on the outer cylinder 1 engage with the locking mechanism on one side of the outer cylinder 1, so that the inner cylinder 2 and the outer cylinder 1 are installed using a plug-in method. This design greatly improves the convenience of disassembly, enabling quick disassembly during routine maintenance or emergency handling. At the same time, due to the damping sliding design inside the damping plug-in mechanism, the inner cylinder 2 and the outer cylinder 1 can slide relative to each other. The sleeve expansion joint can flexibly follow various changes in the pipeline to perform sliding compensation. When the size or position of the pipeline changes due to thermal expansion and contraction, vibration or other external forces, the sleeve expansion joint can respond promptly and accurately, fully absorbing the stress generated by these changes.

[0032] As a further embodiment of this utility model, the damping insertion mechanism includes two cylindrical bodies 6 connected to one side of the mounting bracket 5 and a sliding groove 7 opened in the cylindrical body 6, wherein a first spring 8 is provided in the sliding groove 7.

[0033] In this embodiment, the groove 7 of the cylinder 6 supports the sliding between the inner cylinder 2 and the outer cylinder 1, and the first spring 8 can play a role in damping the sliding.

[0034] As a further embodiment of this utility model, the damping insertion mechanism also includes a plunger rod 9 slidably mounted on the slide groove 7 and a square frame 10 disposed on one side of the plunger rod 9. The plunger rod 9 is connected to one end of the first spring 8, and the square frame 10 slides on one end of the cylinder 6.

[0035] In this embodiment, the plunger rod 9 slides on the slide groove 7, the first spring 8 provides elastic reset function for the plunger rod 9, the square frame 10 is fixed on one side of the plunger rod 9, and the square frame 10 also slides on one side of the cylinder 6.

[0036] As a further embodiment of this utility model, the insertion mechanism includes a slot 11 formed on one side of the square frame 10 and angled fixing blocks 12 slidably mounted on the upper and lower sides of the slot 11, with the same second spring 13 provided between the two angled fixing blocks 12.

[0037] In this embodiment, two beveled fixing blocks 12 are respectively disposed on one side of the square frame 10. One side of each beveled fixing block 12 is designed with a bevel. The second spring 13 provides elastic reset function for the two beveled fixing blocks 12.

[0038] As a further embodiment of this utility model, the locking mechanism includes two limiting frames 14 disposed on one side of the outer cylinder 1 and a square groove 15 formed on the limiting frame 14. Two limiting blocks 16 and a slot 17 formed on the limiting block 16 are symmetrically installed on one side of the limiting frame 14.

[0039] In this embodiment, each of the two limiting blocks 16 is provided with a slot 17, which cooperates with the angled fixing block 12.

[0040] As a further embodiment of this utility model, the locking mechanism further includes an installation component connected between the two limiting blocks 16 and a bidirectional lead screw 18 rotatably mounted on the installation component, with push blocks 19 threadedly connected to both ends of the bidirectional lead screw 18.

[0041] In this embodiment, the bidirectional lead screw 18 is disposed between two limiting blocks 16, and the two push blocks 19 can be driven to move towards each other by rotating the bidirectional lead screw 18.

[0042] As a further embodiment of this utility model, the two push blocks 19 slide inside the two limiting blocks 16 respectively, the two push blocks 19 are respectively attached to one end of the two angled fixing blocks 12, and the two angled fixing blocks 12 are respectively engaged with the two slots 17.

[0043] In this embodiment, during the process of pushing the inner cylinder 2 from one side of the outer cylinder 1, the upper and lower square frames 10 will pass through the two limiting frames 14 respectively. At this time, due to the beveled design of the angled fixing block 12, the angled fixing block 12 is subjected to compressive force when it contacts the limiting frame 14, which causes the angled fixing block 12 to retract inward, thereby compressing the second spring 13. Subsequently, when the square frame 10 passes through the limiting frame 14, the two angled fixing blocks 12 will pop out, so that the two angled fixing blocks 12 are respectively inserted into the two limiting blocks 16, thereby inserting the inner cylinder 2 from the outer cylinder 1. The two pushers can be driven by the moving bidirectional screw 18. Block 19 moves towards each other, causing the two angled fixing blocks 12 to be pushed out from the inside of the two limiting blocks 16 respectively, so that the inner cylinder 2 loses its fixing point from the outer cylinder 1, thereby enabling rapid disassembly. At the same time, the plunger rod 9 slides inside the cylinder 6, and the first spring 8 applies a damping elastic force to the plunger rod 9, so that the inner cylinder 2 and the outer cylinder 1 can slide relative to each other. The sleeve expansion joint can flexibly follow various changes in the pipeline to perform sliding compensation. When the size or position of the pipeline changes due to thermal expansion and contraction, vibration or other external forces, the sleeve expansion joint can respond in a timely and accurate manner and fully absorb the stress generated by these changes.

[0044] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A wear-resistant sleeve expansion joint structure with insert locking seal, comprising an outer cylinder (1) and an inner cylinder (2), characterized in that, A layer of anti-friction filling material (3) is provided between the outer cylinder (1) and the inner cylinder (2). A flange connecting plate (4) and a mounting bracket (5) for bolting the flange connecting plate (4) are connected to the inner cylinder (2). A damping insertion mechanism and an insertion mechanism are provided on one side of the damping insertion mechanism at one end of the mounting bracket (5). A locking mechanism is connected to one side of the outer cylinder (1). The insertion mechanism and the locking mechanism are inserted into each other, and the insertion mechanism is slidably mounted on the damping side.

2. A plug lock seal and wear sleeve expansion joint structure according to claim 1 wherein, The damping plug-in mechanism includes two cylinders (6) connected to one side of the mounting bracket (5) and a slide groove (7) opened in the cylinder (6), and a first spring (8) is provided in the slide groove (7).

3. A plug lock seal and wear sleeve expansion joint structure according to claim 2, wherein, The damping insertion mechanism also includes a plunger rod (9) slidably mounted on the slide groove (7) and a square frame (10) disposed on one side of the plunger rod (9). The plunger rod (9) is connected to one end of the first spring (8), and the square frame (10) slides on one end of the cylinder (6).

4. A plug lock seal and wear sleeve expansion joint structure according to claim 3 wherein, The insertion mechanism includes a slot (11) formed on one side of the square frame (10) and an angled fixing block (12) slidably mounted on the upper and lower sides of the slot (11), with the same second spring (13) provided between the two angled fixing blocks (12).

5. A plug lock seal wear sleeve expansion joint structure according to claim 4, wherein, The locking mechanism includes two limiting frames (14) disposed on one side of the outer cylinder (1) and a square groove (15) opened on the limiting frame (14). Two limiting blocks (16) and a slot (17) opened on the limiting block (16) are symmetrically installed on one side of the limiting frame (14).

6. A push to lock seal, wear sleeve, expansion joint assembly according to claim 5, wherein, The locking mechanism also includes a mounting component connected between two limit blocks (16) and a bidirectional lead screw (18) rotatably mounted on the mounting component, with push blocks (19) threaded to both ends of the bidirectional lead screw (18).

7. A push to lock seal, wear sleeve, expansion joint assembly according to claim 6, wherein, The two push blocks (19) slide inside the two limit blocks (16) respectively. The two push blocks (19) are respectively attached to one end of the two angled fixing blocks (12). The two angled fixing blocks (12) are respectively engaged with the two slots (17).

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