Hoop type sliding sleeve expansion joint

Abstract

The utility model discloses a hoop type sliding sleeve expansion joint which comprises a plurality of inner sleeves and outer sleeves, and hoop assemblies are arranged at the connecting positions of the inner sleeves and the outer sleeves. The hoop assembly comprises a plurality of hoop blocks, the hoop blocks are in an arc shape and jointly form the circular hoop assembly, fastening seats are arranged at the two ends of each hoop block, fastening holes are formed in the fastening seats, fastening bolts are inserted into the fastening holes, the fastening bolts are in threaded connection with fastening nuts matched with the fastening bolts, and the hoop blocks are in threaded connection with the fastening nuts. A clamping groove and a sealing groove are formed in the inner wall of each hoop block, and the clamping grooves and the sealing grooves are each of an annular groove structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of expansion joints, in particular to a hoop-type sliding sleeve expansion joint. Background Art

[0002] Expansion joints, also known as expansion joints, are piping components primarily used to compensate for thermal expansion, contraction, or other deformations in piping systems. This helps prevent stress concentration and pipeline damage caused by factors such as temperature changes, pressure fluctuations, or foundation settlement. Expansion joints are designed to allow for a certain amount of axial, lateral, or angular movement while maintaining a tight seal and maintaining normal operation.

[0003] At present, there are some expansion joint structures on the market, such as a double flange limited expansion joint disclosed on the China Patent Network, with the announcement number CN104676161A. This expansion joint has a simple structure, is easy to install, has high strength, good pressure resistance, low vibration, good use effect, and long service life. However, there are some defects and deficiencies that need to be improved: (1) Due to the structural design of some existing expansion joints, the relative sliding range between the inner sleeve and the outer sleeve is small, which limits the expansion length of the expansion joint and makes it difficult to meet different usage scenarios; (2) After adjusting the expansion length, some existing expansion joints lack effective fastening measures, which makes it easy for the inner sleeve and the outer sleeve to slide and displace, thereby causing the expansion joint to loosen; (3) Some existing expansion joints lack effective sealing measures, which makes a gap between the inner and outer sleeves, thereby causing the inner and outer sleeves to leak during the sliding process. Therefore, in response to the above problems, the clamp-type sliding sleeve expansion joint provided by the utility model is of great significance. Utility Model Content

[0004] The utility model provides a clamp-type sliding sleeve expansion joint. Compared with the existing technology, the relative sliding range of the inner sleeve and the outer sleeve is larger, thereby effectively expanding the expansion length of the expansion joint, which can not only meet different usage scenarios, but also compensate for the deflection of the pipeline caused by lateral displacement and uneven settlement to a large extent, and absorb the stress caused by pipeline deflection and vibration, thereby greatly reducing the occurrence of accidents such as pipeline burst; the protrusion at one end of the outer sleeve can be inserted and fitted into the card groove through the clamp assembly, and the mutual cooperation between the protrusion and the card groove can play a role of limiting and tightening to prevent the inner sleeve and the outer sleeve from sliding and displacing, thereby effectively avoiding the loosening of the expansion joint; the sealing ring on the inner sleeve can be inserted and fitted into the sealing groove through the clamp assembly, and the gap between the inner sleeve and the outer sleeve can be filled by the sealing ring to play a sealing role, thereby effectively preventing the inner sleeve and the outer sleeve from leaking due to the gap during the sliding process. In summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model discloses a clamp type sliding sleeve expansion joint, which comprises a plurality of inner sleeves and an outer sleeve, wherein a clamp assembly is provided at the connection between the inner sleeve and the outer sleeve;

[0007] The clamp assembly includes several clamp blocks, which are arc-shaped and together form a circular clamp assembly, and each of the clamp blocks is provided with a fastening seat at both ends, a fastening hole is provided on the fastening seat, a fastening bolt is inserted into the fastening hole, and a fastening nut is threadedly connected to the fastening bolt to match it, and a clamping groove and a sealing groove are respectively provided on the inner wall of the clamp block, and the clamping groove and the sealing groove are both annular groove structures.

[0008] Furthermore, the number of the outer sleeve and the inner sleeve is one, and the inner diameter of the outer sleeve is equal to the outer diameter of the inner sleeve. The inner sleeve and the outer sleeve are fixedly connected with flanges at one end edge, and the flanges are provided with a plurality of docking holes, and the edges of the flanges are provided with a plurality of locking seats, and the locking seats are provided with locking holes, and locking screws are inserted into the locking holes. The rod body of the locking screw is threadedly connected with a plurality of locking nuts matching it. The outer wall of the inner sleeve is provided with a sealing ring, and the edge of the outer sleeve away from the flange is fixedly connected with a protrusion.

[0009] Furthermore, the protrusion is annular, and its width and thickness are respectively equal to the width and depth of the slot.

[0010] Furthermore, the sealing ring is annular, and its inner diameter is equal to the outer diameter of the inner sleeve, and the width and thickness of the sealing ring are respectively equal to the width and depth of the sealing groove.

[0011] Furthermore, the outer wall surface of each of the clamp blocks is provided with a plurality of reinforcing ribs, and the reinforcing ribs are distributed at equal distances along the outer wall surface of the clamp block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) When the clamp-type sliding sleeve expansion joint of the present invention is used, the relative sliding range of the inner sleeve and the outer sleeve is larger than that of the prior art, thereby effectively expanding the expansion length of the expansion joint. It can not only meet different usage scenarios, but also compensate for the deflection of the pipeline caused by lateral displacement and uneven settlement to a large extent, and absorb the stress caused by pipeline deflection and vibration, thereby greatly reducing the occurrence of accidents such as pipeline bursting;

[0014] (2) When the clamp-type sliding sleeve expansion joint of the present invention is in use, the protrusion at one end of the outer sleeve can be inserted into the slot through the clamp assembly and fit into the slot. The mutual cooperation between the protrusion and the slot can play a role in limiting and tightening, so as to prevent the inner sleeve and the outer sleeve from sliding and displacement, thereby effectively avoiding the loosening of the expansion joint;

[0015] (3) When a clamp-type sliding sleeve expansion joint in the present invention is in use, the sealing ring on the inner sleeve can be inserted and fitted into the sealing groove through the clamp assembly, and the sealing ring can fill the gap between the inner sleeve and the outer sleeve to play a sealing role, thereby effectively preventing leakage due to the gap between the inner sleeve and the outer sleeve during the sliding process.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural diagram of a clamp-type sliding sleeve expansion joint of the utility model;

[0019] Figure 2 This is a front cross-sectional view of a clamp-type sliding sleeve expansion joint of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the inner sleeve in the utility model;

[0021] Figure 4 This is a schematic structural diagram of the inner and outer sleeves of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the clamp assembly in the present utility model;

[0023] Figure 6 This is a schematic structural diagram of the hoop block in the present utility model;

[0024] Figure 7 This is a front view of the hoop block in the utility model;

[0025] Figure 8 This is a structural schematic diagram of a clamp-type sliding sleeve telescopic joint according to another embodiment of the present utility model;

[0026] Figure 9This is a front cross-sectional view of a clamp-type sliding sleeve expansion joint according to another embodiment of the present utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Inner sleeve; 2. Outer sleeve; 3. Clamp block; 4. Fastening seat; 5. Fastening hole; 6. Fastening bolt; 7. Fastening nut; 8. Slot; 9. Sealing groove; 10. Flange; 11. Docking hole; 12. Locking seat; 13. Locking hole; 14. Locking screw; 15. Locking nut; 16. Sealing ring; 17. Bump; 18. Reinforcement rib. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] Example 1:

[0032] See also Figure 1-7 As shown, a clamp type sliding sleeve expansion joint of the present invention comprises a plurality of inner sleeves 1 and outer sleeves 2, wherein a clamp assembly is provided at the connection between the inner sleeves 1 and the outer sleeves 2;

[0033] The clamp assembly includes several clamp blocks 3, which are arc-shaped and together form a circular clamp assembly, and a fastening seat 4 is provided at both ends of each clamp block 3, and a fastening hole 5 is provided on the fastening seat 4. A fastening bolt 6 is inserted into the fastening hole 5, and a fastening nut 7 matching it is threadedly connected to the fastening bolt 6. By tightening the fastening nut 7 on each fastening bolt 6, each clamp block 3 can be tightened so that the clamp assembly is firmly fixed at the connection between the inner sleeve 1 and the outer sleeve 2. The inner wall of the clamp block 3 is respectively provided with a card groove 8 and a sealing groove 9, and the card groove 8 and the sealing groove 9 are both annular groove structures.

[0034] Among them, the number of outer sleeve 2 and inner sleeve 1 is both one, and the inner diameter of outer sleeve 2 is equal to the outer diameter of inner sleeve 1. Outer sleeve 2 can be sleeved on inner sleeve 1 and fit on the outer wall of inner sleeve 1, so that relative sliding can occur between outer sleeve 2 and inner sleeve 1, so as to adjust the telescopic length of the telescopic joint as needed. Flanges 10 are fixedly connected at the edges of one end of inner sleeve 1 and outer sleeve 2, and a plurality of docking holes 11 are provided on flange 10. The inner sleeve 1 and outer sleeve 2 can be fixedly connected to two pipes that need to be docked through flange 10 and docking holes 11. A plurality of locking seats 12 are provided at the edge of flange 10, and locking holes 13 are provided on locking seat 12. Locking screw 14 is inserted into locking hole 13 to lock. The rod body of the screw 14 is threadedly connected with several locking nuts 15 that match it. By tightening the locking nuts 15 on each locking screw 14, the inner sleeve 1 and the outer sleeve 2 can be locked to fix the length of the expansion joint. Compared with the existing technology, the relative sliding range of the inner sleeve 1 and the outer sleeve 2 is larger, thereby effectively expanding the expansion length of the expansion joint, which can not only meet different usage scenarios, but also compensate for the deflection of the pipeline due to lateral displacement and uneven settlement to a large extent, and absorb the stress caused by pipeline deflection and vibration, thereby greatly reducing the occurrence of accidents such as pipeline burst. The outer wall of the inner sleeve 1 is provided with a sealing ring 16, and the outer sleeve 2 is fixedly connected to the edge of one end away from the flange 10 with a protrusion 17.

[0035] Among them, the protrusion 17 is annular, and its width and thickness are respectively equal to the width and depth of the slot 8. When the clamp assembly is fixed at the connection between the inner sleeve 1 and the outer sleeve 2, the protrusion 17 at one end of the outer sleeve 2 can be inserted and fit into the slot 8. At this time, the mutual cooperation between the protrusion 17 and the slot 8 can play a role of limiting and tightening to prevent the inner sleeve 1 and the outer sleeve 2 from sliding and displacing, thereby effectively avoiding the loosening of the expansion joint.

[0036] Among them, the sealing ring 16 is annular, and its inner diameter is equal to the outer diameter of the inner sleeve 1, and the width and thickness of the sealing ring 16 are respectively equal to the width and depth of the sealing groove 9. The sealing ring 16 is made of elastic materials such as rubber. When the clamp assembly is fixed at the connection between the inner sleeve 1 and the outer sleeve 2, the sealing ring 16 can be inserted and fit into the sealing groove 9. At this time, the sealing ring 16 can fill the gap between the inner sleeve 1 and the outer sleeve 2 to play a sealing role, thereby effectively preventing the inner sleeve 1 and the outer sleeve 2 from leaking due to the gap during the sliding process.

[0037] Among them, the outer wall surface of each clamp block 3 is provided with several reinforcing ribs 18, and the reinforcing ribs 18 are evenly distributed along the outer wall surface of the clamp block 3. The structural strength of the clamp block 3 can be improved by multiple reinforcing ribs 18 to prevent the clamp block 3 from bending and deforming after being subjected to external force.

[0038] Example 2:

[0039] See also Figure 8-9 As shown, a clamp type sliding sleeve expansion joint of the present invention comprises a plurality of inner sleeves 1 and outer sleeves 2, wherein a clamp assembly is provided at the connection between the inner sleeves 1 and the outer sleeves 2;

[0040] The clamp assembly includes several clamp blocks 3, which are arc-shaped and together form a circular clamp assembly, and a fastening seat 4 is provided at both ends of each clamp block 3, and a fastening hole 5 is provided on the fastening seat 4. A fastening bolt 6 is inserted into the fastening hole 5, and a fastening nut 7 matching it is threadedly connected to the fastening bolt 6. By tightening the fastening nut 7 on each fastening bolt 6, each clamp block 3 can be tightened so that the clamp assembly is firmly fixed at the connection between the inner sleeve 1 and the outer sleeve 2. The inner wall of the clamp block 3 is respectively provided with a card groove 8 and a sealing groove 9, and the card groove 8 and the sealing groove 9 are both annular groove structures.

[0041] Among them, the number of outer sleeves 2 is one, the number of inner sleeves 1 is two, and the inner diameter of the outer sleeve 2 is equal to the outer diameter of the inner sleeve 1. The outer sleeve 2 can be respectively sleeved on the two inner sleeves 1 and fit on the outer wall of the inner sleeve 1, so that relative sliding can occur between the outer sleeve 2 and the inner sleeve 1, so as to adjust the telescopic length of the expansion joint as needed. A flange 10 is fixedly connected to the edge of one end of the inner sleeve 1, and a plurality of docking holes 11 are provided on the flange 10. The two inner sleeves 1 can be fixedly connected to two pipes that need to be docked through the flange 10 and the docking holes 11. A plurality of locking seats 12 are provided on the edge of the flange 10, and a locking hole 13 is provided on the locking seat 12. A locking screw 14 is inserted into the locking hole 13. The rod body of the locking screw 14 is threadedly connected with several locking nuts 15 that match it. By tightening the locking nuts 15 on each locking screw 14, the inner sleeve 1 and the outer sleeve 2 can be locked to fix the length of the expansion joint. Compared with the existing technology, the relative sliding range of the inner sleeve 1 and the outer sleeve 2 is larger, thereby effectively expanding the expansion length of the expansion joint, which can not only meet different usage scenarios, but also compensate for the deflection of the pipeline due to lateral displacement and uneven settlement to a large extent, and absorb the stress caused by pipeline deflection and vibration, thereby greatly reducing the occurrence of accidents such as pipeline burst. The outer wall of the inner sleeve 1 is provided with a sealing ring 16, and the edges of both ends of the outer sleeve 2 are fixedly connected with bumps 17.

[0042] Among them, the protrusion 17 is annular, and its width and thickness are respectively equal to the width and depth of the slot 8. When the clamp assembly is fixed at the connection between the inner sleeve 1 and the outer sleeve 2, the protrusion 17 at one end of the outer sleeve 2 can be inserted and fit into the slot 8. At this time, the mutual cooperation between the protrusion 17 and the slot 8 can play a role of limiting and tightening to prevent the inner sleeve 1 and the outer sleeve 2 from sliding and displacing, thereby effectively avoiding the loosening of the expansion joint.

[0043] Among them, the sealing ring 16 is annular, and its inner diameter is equal to the outer diameter of the inner sleeve 1, and the width and thickness of the sealing ring 16 are respectively equal to the width and depth of the sealing groove 9. The sealing ring 16 is made of elastic materials such as rubber. When the clamp assembly is fixed at the connection between the inner sleeve 1 and the outer sleeve 2, the sealing ring 16 can be inserted and fit into the sealing groove 9. At this time, the sealing ring 16 can fill the gap between the inner sleeve 1 and the outer sleeve 2 to play a sealing role, thereby effectively preventing the inner sleeve 1 and the outer sleeve 2 from leaking due to the gap during the sliding process.

[0044] Among them, the outer wall surface of each clamp block 3 is provided with several reinforcing ribs 18, and the reinforcing ribs 18 are evenly distributed along the outer wall surface of the clamp block 3. The structural strength of the clamp block 3 can be improved by multiple reinforcing ribs 18 to prevent the clamp block 3 from bending and deforming after being subjected to external force.

[0045] The standard parts used in the application documents can all be purchased from the market. All components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology.

[0046] The working principle of this utility model is:

[0047] When the present invention is in use, the outer sleeve 2 can be sleeved on the inner sleeve 1 and fit against the outer wall of the inner sleeve 1. Relative sliding can occur between the outer sleeve 2 and the inner sleeve 1. When the expansion joint needs to be installed between pipes, the inner sleeve 1 and the outer sleeve 2 can be pushed from both ends to shorten the length of the expansion joint. Then, the expansion joint can be moved between the two pipes to be connected, and the inner sleeve 1 and the outer sleeve 2 can be pushed in opposite directions to extend the length of the expansion joint until the inner sleeve 1 and the outer sleeve 2 are respectively fitted against the pipe openings of the two pipes. Finally, the inner sleeve 1 and the outer sleeve 2 are fixedly connected to the two pipes that need to be docked through the flange 10 and the docking hole 11, and then each clamp block 3 is tightened by tightening the fastening nut 7 on each fastening bolt 6, so that the clamp assembly is firmly fixed to the connection between the inner sleeve 1 and the outer sleeve 2. When the clamp assembly is fixed to the connection between the inner sleeve 1 and the outer sleeve 2, the protrusion 17 at one end of the outer sleeve 2 can be inserted into and fit into the card groove 8. At this time, the mutual cooperation between the protrusion 17 and the card groove 8 can play a role in limiting and tightening. The inner sleeve 1 and the outer sleeve 2 are connected to each other to prevent the inner sleeve 1 and the outer sleeve 2 from sliding and displacing, thereby effectively avoiding the loosening of the expansion joint. The outer wall of the inner sleeve 1 is provided with a sealing ring 16. When the clamp assembly is fixed at the connection between the inner sleeve 1 and the outer sleeve 2, the sealing ring 16 can be inserted into and fit into the sealing groove 9. At this time, the sealing ring 16 can fill the gap between the inner sleeve 1 and the outer sleeve 2 to play a sealing role, thereby effectively preventing the inner sleeve 1 and the outer sleeve 2 from leaking due to the gap during the sliding process. Afterwards, the locking screw 14 is passed through each The locking holes 13 on the locking seats 12 are threadedly connected to the locking nuts 15 on the locking screws 14 and tightened to fix the length of the expansion joint. Compared with the existing technology, the relative sliding range of the inner sleeve 1 and the outer sleeve 2 is larger, thereby effectively expanding the expansion length of the expansion joint, which can not only meet different usage scenarios, but also compensate for the deflection of the pipeline caused by lateral displacement and uneven settlement to a large extent, and absorb the stress caused by pipeline deflection and vibration, thereby greatly reducing the occurrence of accidents such as pipeline burst.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A clamp type sliding sleeve expansion joint, characterized in that: It comprises a plurality of inner sleeves and outer sleeves, wherein a clamp assembly is provided at the connection between the inner sleeves and the outer sleeves; The clamp assembly includes several clamp blocks, which are arc-shaped and together form a circular clamp assembly, and each of the clamp blocks is provided with a fastening seat at both ends, a fastening hole is provided on the fastening seat, a fastening bolt is inserted into the fastening hole, and a fastening nut is threadedly connected to the fastening bolt to match it, and a clamping groove and a sealing groove are respectively provided on the inner wall of the clamp block, and the clamping groove and the sealing groove are both annular groove structures.

2. The clamp type sliding sleeve expansion joint according to claim 1, characterized in that: The number of the outer sleeve and the inner sleeve are both one, and the inner diameter of the outer sleeve is equal to the outer diameter of the inner sleeve. The inner sleeve and the outer sleeve are fixedly connected with flanges at one end edge, and a plurality of docking holes are provided on the flanges, and a plurality of locking seats are provided at the edge of the flanges. The locking seats are provided with locking holes, and locking screws are inserted into the locking holes. The rod body of the locking screw is threadedly connected with a plurality of locking nuts matching it. The outer wall of the inner sleeve is provided with a sealing ring, and a protrusion is fixedly connected with the edge of the end of the outer sleeve away from the flange.

3. The clamp type sliding sleeve expansion joint according to claim 2, characterized in that: The protrusion is annular, and its width and thickness are respectively equal to the width and depth of the slot.

4. The clamp type sliding sleeve expansion joint according to claim 2, characterized in that: The sealing ring is annular, and its inner diameter is equal to the outer diameter of the inner sleeve, and the width and thickness of the sealing ring are respectively equal to the width and depth of the sealing groove.

5. The clamp type sliding sleeve expansion joint according to claim 1, characterized in that: The outer wall surface of each hoop block is provided with a plurality of reinforcing ribs, and the reinforcing ribs are distributed at equal distances along the outer wall surface of the hoop block.

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