A high seal pipe expansion joint

Abstract

The utility model relates to high sealing pipeline expansion joint technical field especially relates to a kind of high sealing pipeline expansion joint. Including connecting pipe, moving pipe and mounting frame, the connecting pipe is arranged in one end of moving pipe, the arc surface of connecting pipe and moving pipe is all provided with mounting bracket, the inner wall of mounting frame is fixedly connected with the arc surface of one end of connecting pipe, the end of connecting pipe and mounting frame each other is provided with adjusting device, the adjusting device includes adjusting ring, the inner wall of adjusting ring is threadedly connected with the arc surface of moving pipe, the side of adjusting ring close to mounting frame is rotatably connected with rotating ring, the surface of rotating ring is uniformly fixedly connected with several connecting brackets, the inner wall of connecting bracket is rotatably connected with connecting plate, the position fixedly connected with positioning column of mounting frame arc surface corresponds connecting plate. The high sealing pipeline expansion joint provided by the utility model has the advantage that the telescopic butt joint of pipeline is limited.

Description

Technical Field

[0001] This utility model relates to the field of high-sealing pipe expansion joint technology, and in particular to a high-sealing pipe expansion joint. Background Technology

[0002] A pipeline is a system of pipes, pipe fittings, valves, and other connected components. Pipeline transportation is a long-distance transport method that uses pipelines as the means of transport. High-sealing pipe expansion joints are typically used to connect two parts of a pipeline system. They can withstand changes in internal and external pressure during pipeline operation and provide a sealing function to prevent leakage. Their expansion and contraction properties can accommodate displacement caused by factors such as thermal expansion and contraction of the pipeline or ground settlement, and they are commonly seen in daily life.

[0003] Existing technologies, such as the utility model patent with publication number CN217977879U, disclose a threaded adjustable double-sided pressure-bearing pipe expansion joint. This patent features a fixed flange that securely connects a section of pipe with external threads, which is inserted into a stepped sleeve. The stepped sleeve is a one-piece molded stepped pipe. The large-diameter end of the stepped sleeve has threads, a groove for installing a sealing ring, and a locking position. Two centrally symmetrical lugs with holes are provided on the outer wall of the pipe to facilitate rotation of the sleeve. A movable flange is fitted on one side of the small-diameter end, allowing free rotation. The advantages of this utility model are: it utilizes a threaded locking and adjustment method to quickly adjust the axial length of the expansion joint, which is simple, fast, and convenient for adjusting the distance between the pipe flanges on both sides of the valve installation location. It also solves the problem of double-sided pressure bearing in the expansion joint, facilitating valve and sealing ring replacement and improving work efficiency.

[0004] In daily use, it has been found that when using high-sealing pipes, the pipes expand or contract due to temperature changes when transporting fluids such as hot water and steam. At this time, the pipes cannot be properly displaced, resulting in displacement pressure caused by temperature changes, which in turn leads to pipe breakage or water leakage at the joints. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the existing technology that, when using high-sealing pipes, pipes expand or contract due to temperature changes when transporting fluids such as hot water and steam. At this time, the pipes cannot be properly displaced, resulting in displacement pressure caused by temperature changes, which in turn leads to pipe breakage or water leakage at the joints.

[0006] To solve the above technical problems, this utility model provides a high-sealing pipe expansion joint, comprising: a connecting pipe, a moving pipe, and an installation frame. The connecting pipe is disposed at one end of the moving pipe. Installation brackets are provided on the arc surfaces of both the connecting pipe and the moving pipe. The inner wall of the installation frame is fixedly connected to the arc surface of one end of the connecting pipe. An adjustment device is provided at the ends of the connecting pipe and the installation frame that are close to each other. The adjustment device includes an adjustment ring. The inner wall of the adjustment ring is threadedly connected to the arc surface of the moving pipe. A rotating ring is rotatably connected to the side of the adjustment ring near the installation frame. Several connecting brackets are uniformly fixedly connected to the surface of the rotating ring. A connecting plate is rotatably connected to the inner wall of the connecting bracket. A positioning post is fixedly connected to the arc surface of the installation frame at a position corresponding to the connecting plate. The surface of the positioning post is inserted into the inner wall of the connecting plate. A positioning shaft is threadedly connected to the arc surface of the positioning post. Several sealing grooves are formed on the arc surface of the moving pipe. Several sealing rings are fixedly connected to the inner wall surface of the installation frame, and the surface of the sealing ring abuts against the inner wall of the sealing groove.

[0007] The effect achieved by the above components is that during the operation and use of the high-sealing pipeline, the relative movement of the connecting pipe and the moving pipe will be adjusted. At this time, the adjustment device set between the mounting frame and the moving pipe can be used to assist the operation, thereby allowing the expansion and contraction distance between the connecting pipe and the moving pipe to be adjusted.

[0008] Preferably, a friction sleeve is fixedly connected to the arc surface of the adjusting ring, and the surface of the friction sleeve is provided with anti-slip texture.

[0009] The effect achieved by the above-mentioned components is that, during the rotation of the adjusting ring, friction can be increased by means of the friction sleeve fixed on the surface of the adjusting ring, making it easier to rotate the adjusting ring.

[0010] Preferably, both ends of the inner wall of the connecting frame are fitted with coil springs, and the two ends of the coil springs are fixedly connected to the connecting plate and the connecting frame, respectively.

[0011] The effect achieved by the above components is that the torsional force generated by the coil spring can compress and protect the position of the connecting plate.

[0012] Preferably, the arc surface of the positioning post is slidably connected to a collar, and the upper surface of the collar abuts against the lower surface of the positioning shaft.

[0013] The effect achieved by the above components is that the positioning shaft can be protected by the collar to prevent it from becoming loose.

[0014] Preferably, an auxiliary device is provided on the inner wall surface of the movable tube. The auxiliary device includes two fixing blocks, one end of which is fixedly connected to the inner wall surface of the movable tube. A limiting rod slides through the surface of the fixing blocks. The two limiting rods are fixedly connected to the same compression ring near the end of the connecting tube. A spring is sleeved on the arc surface of the limiting rod. The two ends of the spring are fixedly connected to the fixing block and the compression ring, respectively. A sleeve, which is a plastic hose, is fixedly connected to one side surface of the compression ring. One end of the sleeve is fixedly connected to one end of the inner wall of the movable tube. A fixing ring is fixedly connected to the inner wall of the movable tube. A protective sleeve, which is a rubber sleeve, is fixedly connected to the inner wall surface of the fixing ring. The inner wall of the fixing ring slides through the arc surface of the connecting tube.

[0015] The effect achieved by the above components is that during the extension and retraction of the connecting pipe and the moving pipe, the auxiliary device set on the inner wall of one end of the moving pipe and the connecting pipe can be used for operation. The compression ring fixed at one end of the plastic hose abuts against one end of the connecting pipe through the compression force generated by the spring, thereby helping to increase the sealing performance.

[0016] Preferably, a docking ring is fixedly connected to one end of the connecting pipe. The docking ring has a flared cross-section, and the extrusion ring has a constricted cross-section. An extrusion pad is fixedly connected to the surface of the extrusion ring, and the surface of the extrusion pad abuts against the inner wall of the docking ring.

[0017] The effect achieved by the above components is that the sealing performance can be effectively increased by connecting the mating ring, the extrusion ring, and the extrusion pad.

[0018] Preferably, the mating ring is a stainless steel ring, and the cross-sectional dimensions of the extrusion ring are adapted to the cross-sectional dimensions of the mating ring.

[0019] The effect achieved by the above components is that the stainless steel mating ring can be used for a long time and avoids rusting.

[0020] Compared with related technologies, the high-sealing pipe expansion joint provided by this utility model has the following beneficial effects:

[0021] By operating the adjustment device, the docking, sealing, and telescopic operation between the moving tube, the connecting tube, and the mounting frame is achieved. The connecting plate, which flips over the arc surface of the moving tube, is inserted and limited by the positioning post fixed on the arc surface of the mounting frame. Then, the positioning shaft is used for compression and limiting fixation. At the same time, the sealing ring in the mounting frame and the sealing groove opened on the arc surface of the moving tube are used for abutment and sealing operation, which helps to limit the telescopic operation between the entire connecting tube and the moving tube.

[0022] By operating the auxiliary device, a sealing protection is achieved between the inside of the moving tube and the connecting tube. The squeezing force generated by the soft plastic sleeve and the spring squeezes and seals the squeezing ring fixed at one end of the sleeve and the connecting tube fixed at one end of the connecting tube. At the same time, the fixing ring fixed on the inner wall of the moving tube slides through the connecting tube, which helps to effectively connect and limit the operation between the entire moving tube and the connecting tube. Attached Figure Description

[0023] Figure 1 A structural schematic diagram of a high-sealing pipe expansion joint provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the regulating device.

[0025] Figure 3 for Figure 1 The diagram shows the structure of the auxiliary device.

[0026] Figure 4 for Figure 1 A partial structural schematic diagram of the auxiliary device shown.

[0027] The following are the labeling elements in the diagram: 1. Connecting pipe; 2. Moving pipe; 3. Mounting bracket; 4. Adjusting device; 401. Adjusting ring; 402. Friction sleeve; 403. Rotating ring; 404. Connecting bracket; 405. Coil spring; 406. Connecting plate; 407. Positioning post; 408. Collar; 409. Positioning shaft; 410. Sealing groove; 411. Sealing ring; 5. Auxiliary device; 51. Sleeve; 52. Limiting rod; 53. Spring; 54. Compression ring; 55. Compression pad; 56. Fixing ring; 57. Protective sleeve; 58. Connecting ring; 59. Fixing block; 6. Mounting frame. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 4The present invention provides a high-sealing pipe expansion joint, comprising: a connecting pipe 1, a movable pipe 2, and a mounting frame 6. The connecting pipe 1 is disposed at one end of the movable pipe 2. Mounting brackets 3 are provided on the arc surfaces of both the connecting pipe 1 and the movable pipe 2. The inner wall of the mounting frame 6 is fixedly connected to the arc surface of one end of the connecting pipe 1. An adjustment device 4 is provided at the end of the connecting pipe 1 and the mounting frame 6 that are close to each other. An auxiliary device 5 is provided on the inner wall surface of the movable pipe 2.

[0031] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The adjusting device 4 includes an adjusting ring 401, the inner wall of which is threadedly connected to the arc surface of the moving tube 2. A rotating ring 403 is rotatably connected to the side of the adjusting ring 401 near the mounting frame 6. Several connecting brackets 404 are uniformly fixedly connected to the surface of the rotating ring 403. A connecting plate 406 is rotatably connected to the inner wall of the connecting bracket 404. A positioning post 407 is fixedly connected to the arc surface of the mounting frame 6 at a position corresponding to the connecting plate 406. The surface of the positioning post 407 is inserted into the inner wall of the connecting plate 406. A positioning shaft 409 is threadedly connected to the arc surface of the positioning post 407. The arc surface is provided with several sealing grooves 410. Several sealing rings 411 are fixedly connected to the inner wall surface of the mounting frame 6. The surface of the sealing rings 411 abuts against the inner wall of the sealing grooves 410. The arc surface of the adjusting ring 401 is fixedly connected with a friction sleeve 402. The surface of the friction sleeve 402 is provided with anti-slip texture. Both ends of the inner wall of the connecting frame 404 are fitted with coil springs 405. The two ends of the coil springs 405 are fixedly connected to the connecting plate 406 and the connecting frame 404 respectively. The arc surface of the positioning column 407 is slidably connected with a collar 408. The upper surface of the collar 408 abuts against the lower surface of the positioning shaft 409.

[0032] In the embodiments of this utility model, please refer to Figure 3 and Figure 4The auxiliary device 5 includes two fixing blocks 59. One end of each fixing block 59 is fixedly connected to the inner wall surface of the moving tube 2. Limiting rods 52 slide through the surface of each fixing block 59. A common compression ring 54 is fixedly connected to one end of each limiting rod 52 near the connecting tube 1. A spring 53 is fitted onto the arc surface of the limiting rod 52. Both ends of the spring 53 are fixedly connected to the fixing block 59 and the compression ring 54, respectively. A sleeve 51, a plastic flexible tube, is fixedly connected to one side surface of the compression ring 54. One end of the sleeve 51 is fixedly connected to one end of the inner wall of the moving tube 2. A fixing ring 56 is fixedly connected to the inner wall of the connecting pipe 1. A protective sleeve 57 is fixedly connected to the inner wall surface of the fixing ring 56. The protective sleeve 57 is a rubber sleeve. The inner wall of the fixing ring 56 slides through the arc surface of the connecting pipe 1. A docking ring 58 is fixedly connected to one end of the connecting pipe 1. The cross-section of the docking ring 58 is flared. The cross-section of the extrusion ring 54 is constricted. An extrusion pad 55 is fixedly connected to the surface of the extrusion ring 54. The surface of the extrusion pad 55 abuts against the inner wall of the docking ring 58. The docking ring 58 is a stainless steel ring. The cross-sectional dimensions of the extrusion ring 54 are adapted to the cross-sectional dimensions of the docking ring 58.

[0033] The working principle of the high-sealing pipe expansion joint provided by this utility model is as follows: During the docking and expansion of the high-sealing pipe, the adjustment device 4, which is set at one end of the connecting pipe 1 and the moving pipe 2, can be used for operation. At this time, the adjustment ring 401 on the arc surface of the moving pipe 2 is rotated, so that the adjustment ring 401 drives the rotating ring 403 to move in position and slide towards the mounting frame 6 on the surface of the connecting pipe 1. When the mounting frame 6 and the moving pipe 2 are close to each other, the connecting plate 406 on the surface of the rotating ring 403 is flipped, so that the connecting plate 406 is inserted and fixed to the positioning post 407 fixed on the surface of the mounting frame 6. Then, the positioning shaft 409 on the arc surface of the positioning post 407 is rotated. During this process, the installation... The sealing ring 411 fixed on the inner wall surface of the frame 6 can be snapped and fixed with the sealing groove 410 opened on the surface of the moving tube 2, which can increase the sealing performance. During the docking and extension process of the moving tube 2 and the connecting tube 1, the sealing performance can be further increased with the help of the auxiliary device 5 set inside the moving tube 2. At this time, the docking ring 58 fixed at one end of the connecting tube 1 will abut against the compression ring 54 fixed at one end of the sleeve 51. At the same time, the arc surface of the connecting tube 1 will slide through the fixed ring 56 to ensure the stability between the connecting tube 1 and the moving tube 2. The sleeve 51 and the compression ring 54 can make the seal between the compression ring 54 and the docking ring 58 more stable with the compression force generated by the arc surface spring 53 of the limiting rod 52.

[0034] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-sealing pipe expansion joint, characterized in that, include: The system comprises a connecting pipe (1), a moving pipe (2), and a mounting frame (6). The connecting pipe (1) is located at one end of the moving pipe (2). Mounting brackets (3) are provided on the arc surfaces of both the connecting pipe (1) and the moving pipe (2). The inner wall of the mounting frame (6) is fixedly connected to the arc surface of one end of the connecting pipe (1). An adjusting device (4) is provided at the end of the connecting pipe (1) and the mounting frame (6) that are close to each other. The adjusting device (4) includes an adjusting ring (401). The inner wall of the adjusting ring (401) is threadedly connected to the arc surface of the moving pipe (2). A rotating ring (403) is rotatably connected to the side of the adjusting ring (401) that is close to the mounting frame (6). The surface of the mounting frame (6) is uniformly fixedly connected with several connecting brackets (404). The inner wall of the connecting bracket (404) is rotatably connected with a connecting plate (406). The arc surface of the mounting frame (6) is fixedly connected with a positioning post (407) corresponding to the position of the connecting plate (406). The surface of the positioning post (407) is inserted into the inner wall of the connecting plate (406). The arc surface of the positioning post (407) is threadedly connected with a positioning shaft (409). The arc surface of the moving tube (2) is provided with several sealing grooves (410). The inner wall surface of the mounting frame (6) is fixedly connected with several sealing rings (411). The surface of the sealing rings (411) abuts against the inner wall of the sealing grooves (410).

2. The high-sealing pipe expansion joint according to claim 1, characterized in that, The arc surface of the adjusting ring (401) is fixedly connected to a friction sleeve (402), and the surface of the friction sleeve (402) is provided with anti-slip texture.

3. A high-sealing pipe expansion joint according to claim 1, characterized in that, Both ends of the inner wall of the connecting frame (404) are fitted with coil springs (405), and the two ends of the coil springs (405) are fixedly connected to the connecting plate (406) and the connecting frame (404) respectively.

4. A high-sealing pipe expansion joint according to claim 1, characterized in that, The positioning post (407) has a slidably connected collar (408) on its arc surface, and the upper surface of the collar (408) abuts against the lower surface of the positioning shaft (409).

5. A high-sealing pipe expansion joint according to claim 1, characterized in that, An auxiliary device (5) is provided on the inner wall surface of the moving tube (2). The auxiliary device (5) includes two fixing blocks (59). One end of the two fixing blocks (59) is fixedly connected to the inner wall surface of the moving tube (2). A limiting rod (52) slides through the surface of the fixing block (59). The two limiting rods (52) are fixedly connected to the same compression ring (54) at one end near the connecting tube (1). A spring (53) is sleeved on the arc surface of the limiting rod (52). The two ends of the spring (53) are respectively connected to the fixing blocks. (59) and the extrusion ring (54) are fixedly connected. A sleeve (51) is fixedly connected to one side surface of the extrusion ring (54). The sleeve (51) is a plastic hose. One end of the sleeve (51) is fixedly connected to one end of the inner wall of the moving tube (2). A fixing ring (56) is fixedly connected to the inner wall of the moving tube (2). A protective sleeve (57) is fixedly connected to the inner wall surface of the fixing ring (56). The protective sleeve (57) is a rubber sleeve. The inner wall of the fixing ring (56) slides through the arc surface of the connecting tube (1).

6. A high-sealing pipe expansion joint according to claim 5, characterized in that, One end of the connecting pipe (1) is fixedly connected to a docking ring (58). The docking ring (58) has an flared cross section, and the extrusion ring (54) has a constricted cross section. An extrusion pad (55) is fixedly connected to the surface of the extrusion ring (54), and the surface of the extrusion pad (55) abuts against the inner wall of the docking ring (58).

7. A high-sealing pipe expansion joint according to claim 6, characterized in that, The docking ring (58) is a stainless steel ring, and the cross-sectional dimensions of the extrusion ring (54) are adapted to the cross-sectional dimensions of the docking ring (58).

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