Piezoelectric heat shrink sleeve

Abstract

The utility model provides a kind of compression-resistant electrothermal sleeve, it relates to electrothermal sleeve technical field, including the sleeve piece for connecting pipeline, at least one reinforcing member is sleeved in the outer circumferential surface of sleeve piece along the length direction of itself;The reinforcing member includes annular reinforcing frame, the circumferential surface of annular reinforcing frame is annular array and is opened with multiple triangular grooves I, the inside of each triangular groove I is fixedly connected with reinforcing rod;Compared with prior art, the utility model can improve the structural strength of sleeve piece by the synergistic effect of annular reinforcing frame and triangular groove I, and when sleeve piece is connected with pipeline, annular reinforcing frame as external protective layer can effectively disperse external pressure, prevent sleeve piece from deforming due to uneven stress, the geometric design of triangular groove I further enhances the compression resistance of annular reinforcing frame, so that it is not easy to occur plastic deformation when being compressed, thereby avoiding that micro-crack is generated at the interface of sleeve piece and pipeline, prolongs overall service life.

Description

Technical Field

[0001] This utility model relates to the field of electrothermal fusion sleeve technology, and in particular to a pressure-resistant electrothermal fusion sleeve. Background Technology

[0002] The connection quality of buried insulated pipelines (such as heating networks and oil pipelines) directly affects the safety of pipeline operation. Traditional pipeline connection methods have significant defects: (1) Heat shrinkable tape technology, which relies on flame heating to shrink, has the risk of uneven temperature control leading to seal failure. In long-term operation, heat shrinkable tape is prone to cracking due to ultraviolet aging and soil stress concentration. Statistics show that its service life is generally less than 10 years; (2) Mechanical clamp connection, which achieves sealing through bolt tightening, but soil corrosion and freeze-thaw cycles in the underground environment will cause metal parts to rust, which in turn will cause the connection to loosen. An analysis of a pipeline accident in an oil field shows that mechanical connection leakage accounts for 32%; while the existing electrothermal fusion sleeve technology achieves molecular-level fusion through electrothermal fusion, the existing products have certain defects, namely insufficient pressure resistance. When the pipeline is laid, it needs to withstand the combined stress of backfill pressure and ground vehicle load. The PE substrate ring stiffness of ordinary electrothermal fusion sleeve is insufficient and is prone to deformation, resulting in micro-cracks at the interface. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model proposes a pressure-resistant electrothermal fusion sleeve.

[0004] The technical solution of this utility model is as follows: a pressure-resistant electrothermal fusion sleeve includes a fusion sleeve for connecting pipes, and at least one reinforcing member is sleeved on the outer peripheral surface of the fusion sleeve along its own length direction;

[0005] The reinforcing member includes an annular reinforcing frame, the circumference of which is provided with a plurality of triangular grooves I arranged in an annular array.

[0006] Preferably, a reinforcing rod is fixedly connected inside each of the triangular grooves I, and a triangular groove II is formed between the outer side of the reinforcing rod and the inner wall of the triangular groove I.

[0007] Preferably, the outer peripheral surface of the fusion assembly forms multiple axial grooves in a ring array along its length direction, and the inner peripheral surface of the annular reinforcing frame is fixedly connected with multiple guide rods in a ring array, with each guide rod matching one of the axial grooves.

[0008] Preferably, a movable limiting screw is screwed onto the guide rod, and the free end of the limiting screw extends into the interior of the axial groove.

[0009] Preferably, the fusion sleeve includes a fusion sleeve body, the axial groove is formed on the outside of the fusion sleeve body, and a wire is installed on one side of the fusion sleeve body.

[0010] Preferably, the fuselage body includes a heat-fusion layer, a heat-conducting layer is disposed outside the heat-conducting layer, an electrothermal fusion mesh is disposed outside the heat-conducting layer, a heat-resistant layer is disposed outside the electrothermal fusion mesh, and the electrothermal fusion mesh is connected to a wire.

[0011] Preferably, a heat insulation layer is provided on the outside of the heat-resistant layer, a reinforcing layer is provided on the outside of the heat insulation layer, and a wear-resistant layer is provided on the outside of the reinforcing layer.

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

[0013] 1. This utility model can improve the structural strength of the welding assembly by the synergistic effect of the annular reinforcing frame and the triangular groove I. When the welding assembly is connected to the pipeline, the annular reinforcing frame, as an external protective layer, can effectively disperse external pressure and prevent the welding assembly from deforming due to uneven stress. The geometric design of the triangular groove I further enhances the compressive strength of the annular reinforcing frame, making it less prone to plastic deformation under pressure, thereby avoiding micro-cracks at the interface between the welding assembly and the pipeline and extending the overall service life.

[0014] 2. This utility model adds a reinforcing rod inside the annular reinforcing frame, which together with the triangular groove I forms a structure of multiple triangular grooves II. This composite design improves the compressive strength of the annular reinforcing frame through multi-level stress dispersion. When external pressure is applied, the geometric structure of the triangular groove II can effectively absorb and disperse the stress, so that the annular reinforcing frame can still maintain a stable shape when subjected to compression, further reducing the risk of deformation of the fused assembly and extending its service life.

[0015] 3. This utility model achieves precise axial positioning of the annular reinforcing frame and the welding assembly through the cooperation design of the axial groove and the guide rod. During connection, the guide rod slides in along the axial groove to ensure that the axes of the two are completely aligned, avoiding axial rotation of the annular reinforcing frame. This design not only ensures connection stability and enables the annular reinforcing frame to continuously provide uniform support force, but also improves the reliability of the welding assembly under complex working conditions.

[0016] 4. After the annular reinforcing frame and the fusion assembly are connected, the limiting screw on the rotating guide rod is used to mechanically lock it with the axial groove. This design can effectively prevent the connecting parts from loosening due to vibration or external force, ensuring that the annular reinforcing frame always fits tightly with the fusion assembly and maintains its compressive strength. Through the double fixing mechanism, the overall service life of the device is further extended. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a perspective view of the present invention with the reinforcing member removed;

[0020] Figure 3 This is a perspective view of the reinforcing component of this utility model;

[0021] Figure 4 This is a structural diagram of the welding kit of this utility model;

[0022] Figure 5 This is a side view of the reinforcing member of this utility model;

[0023] Figure 6 for Figure 3 Enlarged view of section A in the middle;

[0024] Figure 7 for Figure 5 Enlarged view of section B;

[0025] In the diagram: 1. Fusion sleeve; 11. Fusion sleeve body; 111. Hot melt layer; 112. Heat-conducting layer; 113. Electrothermal fusion mesh; 114. Heat-resistant layer; 115. Heat insulation layer; 116. Reinforcing layer; 117. Wear-resistant layer; 12. Axial groove; 13. Wire; 2. Reinforcing member; 21. Annular reinforcing frame; 22. Triangular groove I; 23. Guide rod; 24. Limiting screw; 25. Reinforcing rod; 26. Triangular groove II. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-7 As shown, a pressure-resistant electrothermal fusion sleeve includes a fusion sleeve 1 for connecting pipes, and at least one reinforcing member 2 is sleeved on the outer peripheral surface of the fusion sleeve 1 along its own length direction;

[0028] The reinforcing member 2 includes an annular reinforcing frame 21, and the annular reinforcing frame 21 has multiple triangular grooves I 22 arranged in an annular array on its circumferential surface.

[0029] With the above technical solution, before connecting the pipe, take multiple annular reinforcing frames 21, put the multiple annular reinforcing frames 21 on the fusion assembly 1, and pull the annular reinforcing frames 21 along the fusion assembly 1 to adjust the distance between two adjacent annular reinforcing frames 21. Then insert the pipe to be connected into the inside of the fusion assembly 1. After the pipe is inserted into the inside of the fusion assembly 1, connect the welding machine (not shown in the figure) to the fusion assembly 1. Through the operation of the welding machine, the connection between the fusion assembly 1 and the pipe is fused together. After the fusion assembly 1 and the pipe are connected, the annular reinforcing frames 21 increase the compressive strength of the fusion assembly 1 and the compressive strength of the connection between the fusion assembly 1 and the pipe. When the annular reinforcing frames 21 are used, they are engaged by the triangular groove I 22 to increase the strength of the annular reinforcing frames 21, so that the fusion assembly 1 and the connection between the fusion assembly 1 and the pipe are not easily damaged after being squeezed.

[0030] Secondly, during use, in order to further increase the compressive strength of the device, such as... Figures 1-3 as well as Figures 5-7 As shown, a reinforcing rod 25 is fixedly connected inside each triangular groove I22, and a triangular groove II26 is formed between the outer side of the reinforcing rod 25 and the inner wall of the triangular groove I22.

[0031] In this embodiment, when the annular reinforcing frame 21 is compressed, the strength of the triangular groove I 22 is increased by the reinforcing rod 25. Furthermore, since the triangular groove I 22 and the reinforcing rod 25 cooperate to form the triangular groove II 26, the strength of the triangular groove I 22 and the annular reinforcing frame 21 is further increased, thereby improving the strength of the annular reinforcing frame 21 and thus improving the compressive strength of the fused assembly 1.

[0032] To facilitate the connection between the fusion assembly 1 and the annular reinforcing frame 21, such as Figures 1-7 As shown, the outer circumferential surface of the fusion assembly 1 forms multiple axial grooves 12 in a ring array along its own length direction, and the inner circumferential surface of the annular reinforcing frame 21 is fixedly connected with multiple guide rods 23 in a ring array, with each guide rod 23 matching one of the axial grooves 12.

[0033] In this embodiment, when the fusion assembly 1 is connected to the annular reinforcing frame 21, the axial groove 12 and the guide rod 23 cooperate to facilitate the connection between the fusion assembly 1 and the annular reinforcing frame 21, prevent the annular reinforcing frame 21 from rotating axially, make the annular reinforcing frame 21 more stable when supporting the fusion assembly 1, and improve the compressive strength of the fusion assembly 1 during use.

[0034] After the fusion assembly 1 is connected to the annular reinforcing frame 21, in order to fix the position of the annular reinforcing frame 21, such as Figures 5-7As shown, a movable limiting screw 24 is screwed onto the guide rod 23, and the free end of the limiting screw 24 extends into the interior of the axial groove 12.

[0035] In this embodiment, after the fusion assembly 1 is connected to the axial groove 12 on the fusion assembly 1 via the guide rod 23, the annular reinforcing frame 21 is pulled to move along the fusion assembly 1. When the annular reinforcing frame 21 stops moving, the limiting screw 24 on the guide rod 23 is rotated to move the limiting screw 24 relative to the guide rod 23 until the limiting screw 24 clamps the guide rod 23, thereby fixing the position of the annular reinforcing frame 21. This makes the annular reinforcing frame 21 more stable when supporting the fusion assembly 1, thereby improving the compressive strength of the fusion assembly 1, making the fusion assembly 1 less prone to damage during use, and increasing the service life of the device.

[0036] Specifically, in one embodiment, regarding the aforementioned fusion splice 1, as... Figures 1-2 and Figure 4 As shown, the ferrule 1 includes a ferrule body 11, an axial groove 12 is formed on the outside of the ferrule body 11, and a wire 13 is installed on one side of the ferrule body 11.

[0037] In this embodiment, when it is necessary to connect the fusible sleeve body 11 to the pipeline, one end of the pipeline is inserted into the fusible sleeve body 11. After the pipeline is connected to the fusible sleeve body 11, a welding machine (not shown in the figure) is connected to the fusible sleeve body 11. The welding machine is used to melt and connect the fusible sleeve body 11 to the pipeline. After the fusible sleeve body 11 is connected to the pipeline, the annular reinforcing frame 21 increases the compressive strength of the fusible sleeve body 11 and the compressive strength of the connection between the fusible sleeve body 11 and the pipeline. When the annular reinforcing frame 21 is used, it is engaged by the triangular groove I 22, thereby increasing the strength of the fusible sleeve body 11.

[0038] Furthermore, in this utility model, regarding the aforementioned fusible sleeve body 11, as follows: Figures 1-2 and Figure 4 As shown, the fuselage body 11 includes a heat-fusion layer 111, a heat-conducting layer 112 is disposed outside the heat-conducting layer 111, an electrothermal fusion mesh 113 is disposed outside the heat-conducting layer 112, a heat-resistant layer 114 is disposed outside the electrothermal fusion mesh 113, and the electrothermal fusion mesh 113 is connected to the wire 13.

[0039] In this embodiment, the pipe is connected to the fusion sleeve body 11, and one end of the pipe is inserted into the fusion sleeve body 11. The welding machine is connected to the wire 13. The welding machine works to heat up the electrothermal fusion mesh 113. The fusion sleeve body 11 and the pipe are melted and connected by the cooperation of the heat-melting layer 111, the heat-conducting layer 112 and the heat-resistant layer 114.

[0040] To increase the strength of the fusible sleeve body 11, such as Figure 4As shown, a heat insulation layer 115 is provided on the outside of the heat-resistant layer 114, a reinforcing layer 116 is provided on the outside of the heat insulation layer 115, and a wear-resistant layer 117 is provided on the outside of the reinforcing layer 116.

[0041] In this embodiment, when the pipeline is connected to the fusible sleeve body 11, the heat insulation layer 115, the reinforcing layer 116 and the wear-resistant layer 117 work together to prevent the fusible sleeve body 11 from being damaged and to extend the service life of the fusible sleeve body 11.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-resistant electrothermal fusion sleeve, characterized in that: It includes a fusion fitting (1) for connecting pipes, wherein at least one reinforcing member (2) is fitted on the outer peripheral surface of the fusion fitting (1) along its own length direction; The reinforcing member (2) includes an annular reinforcing frame (21), and the annular reinforcing frame (21) has multiple triangular grooves (22) arranged in an annular array on its circumferential surface.

2. The pressure-resistant electrothermal fusion sleeve according to claim 1, characterized in that: Each of the triangular grooves I (22) is fixedly connected to a reinforcing rod (25), and a triangular groove II (26) is formed between the outer side of the reinforcing rod (25) and the inner wall of the triangular groove I (22).

3. The pressure-resistant electrothermal fusion sleeve according to claim 1 or 2, characterized in that: The outer circumferential surface of the fusion assembly (1) forms a plurality of axial grooves (12) in a ring array along its own length direction. The inner circumferential surface of the ring reinforcing frame (21) is fixedly connected with a plurality of guide rods (23) in a ring array. The guide rods (23) are matched one by one with the axial grooves (12).

4. The pressure-resistant electrothermal fusion sleeve according to claim 3, characterized in that: A movable limiting screw (24) is screwed onto the guide rod (23), and the free end of the limiting screw (24) extends into the interior of the axial groove (12).

5. The pressure-resistant electrothermal fusion sleeve according to claim 4, characterized in that: The fusion sleeve (1) includes a fusion sleeve body (11), the axial groove (12) is formed on the outside of the fusion sleeve body (11), and a wire (13) is installed on one side of the fusion sleeve body (11).

6. The pressure-resistant electrothermal fusion sleeve according to claim 5, characterized in that: The fusible sleeve body (11) includes a heat-fusion layer (111), a heat-conducting layer (112) is provided on the outside of the heat-conducting layer (112), an electrothermal fusion mesh (113) is provided on the outside of the heat-conducting layer (112), a heat-resistant layer (114) is provided on the outside of the electrothermal fusion mesh (113), and the electrothermal fusion mesh (113) is connected to the wire (13).

7. The pressure-resistant electrothermal fusion sleeve according to claim 6, characterized in that: The heat-resistant layer (114) is provided with a heat insulation layer (115) on the outside, the heat insulation layer (115) is provided with a reinforcing layer (116) on the outside, and the reinforcing layer (116) is provided with a wear-resistant layer (117) on the outside.

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