Pipeline compensation joint protection device

Abstract

The utility model discloses a pipeline compensation joint protection device, which belongs to the technical field of pipeline compensation joints and comprises a compensation joint main body, sealing rings are arranged in a first sleeve and a second sleeve and positioned on end surfaces formed by inner diameter change, and fixing devices are arranged at two ends of the compensation joint main body. The two fixing devices, the first sleeve and the second sleeve are provided with tensioning devices. According to the pipeline compensation joint protection device, the position of a pipeline is positioned through the fixing device, so that the compensation joint main body only needs to guarantee the sealing performance of the compensation joint main body and the sealing performance between the compensation joint main body and the pipeline, the service life of the pipeline compensation joint is protected in a function splitting mode, and in the subsequent use process, the pipeline compensation joint is prevented from being damaged. When one of the sealing performance and the connecting function goes wrong, only one of the corresponding compensation connector body and the corresponding fixing device needs to be replaced, and then the situation that the whole body needs to be replaced after a fault occurs is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipeline expansion joint technology, specifically a pipeline expansion joint protection device. Background Technology

[0002] Publication No.: CN210770854U, Title: A Novel Compensating Joint, which discloses: including a first connecting pipe and a second connecting pipe, the first connecting pipe including a first flange for connecting to an external pipeline, a leak-proof ring provided on the body of the first connecting pipe, and a fixing bolt for locking the second connecting pipe to the first connecting pipe on the right side of the leak-proof ring, the second connecting pipe including a straight pipe on the left and a ball-shaped pipe on the right, the straight pipe portion of the second connecting pipe being located inside the first connecting pipe and locked by the leak-proof ring and the fixing bolt, improving the problem of possible water leakage when the pressure is too high, the use of a leak-proof ring can effectively prevent the aging of the leak-proof ring, and the use of an oil seal improves the sealing effect, prevents water leakage, and improves product quality and reliability;

[0003] The aforementioned disclosure addresses the issue of potential leakage under excessive pressure by using anti-leak rings and fixing bolts. However, current expansion joints, after installation, not only need to form a seal with the pipeline but also need to fix and pull the pipeline to prevent misalignment due to vibration or other reasons during use, thus maintaining the seal. However, simply using expansion joints for positioning and pulling means that after prolonged use, if either the sealing or connection function of the expansion joint fails, the entire expansion joint needs to be replaced, which can lead to waste to some extent. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pipeline expansion joint protection device. This solves the problem that current expansion joints, after installation, need to not only form a seal with the pipeline but also fix and pull the pipeline to prevent misalignment due to vibration or other reasons during use, thus failing to maintain the seal. However, simply using expansion joints for positioning and pulling means that after long-term use, regardless of whether the sealing or connection function of the expansion joint fails, the entire expansion joint needs to be replaced, which can lead to waste to some extent.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pipe expansion joint protection device, comprising an expansion joint body, the expansion joint body including a first sleeve and a second sleeve, one end of the second sleeve slidingly extending into the first sleeve and forming a seal, the inner diameter of the ends of the first sleeve and the second sleeve that are far apart from each other being larger than the inner diameter of the ends that are close to each other, a sealing ring being provided inside the first sleeve and the second sleeve and at the end face formed by the change in inner diameter, and fixing devices being provided at both ends of the expansion joint body, and tensioning devices being provided for both fixing devices and the first sleeve and the second sleeve, the tensioning devices being used to drive the sealing ring to contact the end of the pipe.

[0006] Preferably, the inner diameters of the ends of the first sleeve and the second sleeve that are furthest from each other are the same as the outer diameter of the pipe, and the inner diameters of the ends of the first sleeve and the second sleeve that are closest to each other are the same as the inner diameter of the pipe.

[0007] Preferably, the fixing device includes a collar, a first nut is threadedly connected to the circumference of the collar, a plurality of wedge-shaped spring blocks are fixedly connected to one end of the collar, and retaining rings are provided on the circumferences of the first sleeve and the second sleeve. The two ends of the tensioning device are respectively engaged with the retaining rings and the collar.

[0008] Preferably, a second nut is fixedly connected to the other end of the collar, and multiple slots are provided on the side of the second nut. The tensioning device includes two L-shaped rods, and the vertical ends of the two L-shaped rods are respectively engaged with the collar and the slots.

[0009] Preferably, a screw is fixedly connected to the lateral end of one of the L-shaped rods, the end of the screw passes through the lateral end of the other L-shaped rod, and a third nut is threaded through the circumferential side of one end of the other L-shaped rod.

[0010] Beneficial effects

[0011] This utility model provides a protective device for pipe expansion joints. Compared with the prior art, it has the following advantages:

[0012] (1) The pipe expansion joint protection device is equipped with an expansion joint body and two fixing devices. The fixing devices position the pipe and thus share the connection function of the expansion joint. The expansion joint body only needs to ensure its own sealing and the sealing between it and the pipe. By splitting the functions, the service life of the pipe expansion joint is protected. In subsequent use, if the sealing or connection function is faulty, only one of the corresponding expansion joint body or fixing device needs to be replaced, thus avoiding the need to replace the whole after the failure.

[0013] (2) The pipe expansion joint protection device pulls the first sleeve and the second sleeve through the tensioning device, causing the sealing ring to come into contact with the end of the pipe, thereby conveniently achieving the sealing between the expansion joint body and the pipe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0016] Figure 3 This is an exploded view of the overall structure of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the main structure of the compensation structure of this utility model;

[0018] Figure 5 This is an exploded view of the connection structure of the fixing device of this utility model;

[0019] Figure 6 This is a schematic diagram of the connection structure of the tensioning device of this utility model.

[0020] In the diagram: 1. Expansion joint body; 11. First sleeve; 111. Sealing ring; 12. Second sleeve; 121. Snap ring; 2. Fixing device; 21. Collar; 22. Wedge-shaped spring block; 23. First nut; 24. Second nut; 241. Snap groove; 3. Tensioning device; 31. L-shaped rod; 32. Screw; 33. Third nut. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-6This utility model provides a technical solution: a pipe expansion joint protection device, including an expansion joint body 1, the expansion joint body 1 including a first sleeve 11 and a second sleeve 12, one end of the second sleeve 12 slidingly extending into the first sleeve 11 and forming a seal, the inner diameter of the ends of the first sleeve 11 and the second sleeve 12 that are far apart from each other is larger than the inner diameter of the ends that are close to each other, a sealing ring 111 is provided in the first sleeve 11 and the second sleeve 12 and at the end face formed by the change of inner diameter, a fixing device 2 is provided at both ends of the expansion joint body 1, and a tensioning device 3 is provided for both fixing devices 2 and the first sleeve 11 and the second sleeve 12, the tensioning device 3 is used to drive the sealing ring 111 to abut against the end of the pipe.

[0023] Specifically, when using the expansion joint body 1, the end of the pipe and its periphery need to be ground in advance to make it flat and smooth. When installing the expansion joint body 1, the pipe is inserted into both ends of the expansion joint body 1. The end faces formed at the change of inner diameter of the first sleeve 11 and the second sleeve 12 abut against the end of the pipe. Under the pull of the tensioning device 3, the sealing ring 111 is squeezed, thereby ensuring that the expansion joint body 1 and the pipe form a stable seal. The fixing device 2 is fixedly installed on the periphery of the pipe.

[0024] The inner diameters of the first sleeve 11 and the second sleeve 12 at their opposite ends are the same as the outer diameter of the pipe, while the inner diameters of the first sleeve 11 and the second sleeve 12 at their opposite ends are the same as the inner diameter of the pipe.

[0025] Specifically, the inner diameters of the first sleeve 11 and the second sleeve 12 at their opposite ends are the same as the outer diameter of the pipe, so that the pipe can be stably inserted into the first sleeve 11 and the second sleeve 12. The inner diameters of the first sleeve 11 and the second sleeve 12 at their opposite ends are the same as the inner diameter of the pipe, so that the end face formed by the change in inner diameter can abut against the end of the pipe.

[0026] The fixing device 2 includes a collar 21, with a first nut 23 threadedly connected to the circumference of the collar 21. Multiple wedge-shaped spring blocks 22 are fixedly connected to one end of the collar 21. The first sleeve 11 and the second sleeve 12 are both provided with retaining rings 121 on their circumferences. The two ends of the tensioning device 3 are respectively engaged with the retaining rings 121 and the collar 21.

[0027] Specifically, the inner diameter of the collar 21 is larger than the outer diameter of the pipe. In use, the collar 21 is fitted around the periphery of the pipe. When the first nut 23 is rotated and approaches the wedge-shaped spring block 22, it will deform and squeeze the outer wall of the pipe by pressing the inclined surface of the wedge-shaped spring block 22, thereby fixing the collar 21 on the pipe.

[0028] The other end of the collar 21 is fixedly connected to a second nut 24. The side of the second nut 24 is provided with multiple slots 241. The tensioning device 3 includes two L-shaped rods 31. The vertical ends of the two L-shaped rods 31 are respectively engaged with the collar 21 and the slots 241.

[0029] Specifically, the vertical ends of the L-shaped rods 31 are engaged with the collar 21 and the slot 241 respectively, so that when the two L-shaped rods 31 approach each other, the length of the compensation joint body 1 can be changed by pulling.

[0030] One of the L-shaped rods 31 has a screw 32 fixedly connected to its transverse end. The end of the screw 32 passes through the transverse end of the other L-shaped rod 31. The screw 32 passes through the circumferential thread of one end of the other L-shaped rod 31 and is connected to a third nut 33.

[0031] Specifically, rotating the third nut 33, under the action of the thread, can squeeze and drive the two L-shaped rods 31 to slide closer to each other.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe expansion joint protection device, characterized in that: Including the main body of the compensating joint (1); The main body (1) of the compensation joint includes a first sleeve (11) and a second sleeve (12), one end of the second sleeve (12) slides into the first sleeve (11) and forms a seal; The inner diameters of the first sleeve (11) and the second sleeve (12) at their ends furthest from each other are greater than the inner diameters at their ends closest to each other. A sealing ring (111) is provided inside the first sleeve (11) and the second sleeve (12) at the end face where the inner diameter changes. Both ends of the main body (1) of the compensation joint are provided with fixing devices (2), and the two fixing devices (2) and the first sleeve (11) and the second sleeve (12) are all provided with tensioning devices (3). The tensioning device (3) is used to drive the sealing ring (111) to contact the end of the pipe.

2. The pipeline expansion joint protection device according to claim 1, characterized in that: The inner diameters of the first sleeve (11) and the second sleeve (12) at their opposite ends are the same as the outer diameter of the pipe, and the inner diameters of the first sleeve (11) and the second sleeve (12) at their opposite ends are the same as the inner diameter of the pipe.

3. The pipeline expansion joint protection device according to claim 1, characterized in that: The fixing device (2) includes a collar (21), a first nut (23) is threaded on the circumference of the collar (21), and a plurality of wedge-shaped spring blocks (22) are fixedly connected to one end of the collar (21). The first sleeve (11) and the second sleeve (12) are both provided with retaining rings (121). The two ends of the tensioning device (3) are respectively engaged with the retaining rings (121) and the collar (21).

4. A pipe expansion joint protection device according to claim 3, characterized in that: The other end of the collar (21) is fixedly connected to a second nut (24). The side of the second nut (24) is provided with multiple slots (241). The tensioning device (3) includes two L-shaped rods (31). The vertical ends of the two L-shaped rods (31) are respectively engaged with the collar (21) and the slots (241).

5. A pipe expansion joint protection device according to claim 4, characterized in that: One of the L-shaped rods (31) has a screw (32) fixedly connected to its transverse end. The end of the screw (32) passes through the transverse end of the other L-shaped rod (31). The screw (32) passes through the circumferential thread of one end of the other L-shaped rod (31) and is connected to a third nut (33).

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