High-strength double-flange limiting expansion joint

Abstract

The utility model provides a high-strength double-flange limiting expansion joint, which relates to the technical field of flange connection and comprises a first expansion joint, a second expansion joint arranged on the first expansion joint, a fixing component arranged on the first expansion joint, and connecting components arranged on the first expansion joint and the second expansion joint. An operator lengthens or shrinks the first telescopic joint and the second telescopic joint to proper positions, and tightens the first nut and the second nut on the first threaded rod and the second threaded rod, so that the first telescopic joint and the second telescopic joint can be fastened and fixed at the adjusted positions; the first clamp and the second clamp are rotated to place flange plates of pipelines needing to be connected in the first clamp and the second clamp, and the bolts are tightened, so that the pipelines can be fixedly connected through the first telescopic joint and the second telescopic joint; therefore, the technical problems that flange plates on the first expansion joint and the second expansion joint need to be fastened through bolts, time and labor are wasted, and connection is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange connection, in particular to a high-strength double-flange limited expansion joint. Background Art

[0002] The high-strength double-flange limited expansion joint is a connector for pipeline systems. It has two flanges that can be connected to both ends of the pipeline and can withstand stress and deformation in high-pressure and high-temperature environments when the pipeline is in operation. It is designed to allow the pipeline to expand and contract freely when affected by temperature changes, vibrations or other factors, while limiting its expansion and contraction range through a limit device to ensure the safe operation of the pipeline system.

[0003] The existing patent (publication number: CN219734559U) proposes a double-flange limited expansion joint, wherein an annular baffle is provided on the inner circumference of the connecting plate facing the left flange tube, and a sealing ring is provided on the side wall of the annular baffle facing the left flange tube. A plurality of short screw rods are provided between the left flange tube and the connecting plate, and fixing nuts are provided on the sides of the short screw rods close to the left flange tube and the connecting plate. The utility model provides a double-flange limited expansion joint that can be conveniently controlled to expand and contract without manual adjustment, thereby reducing the labor intensity of manual labor and making the adjustment of the double-flange joint more convenient.

[0004] However, when the existing double-flange limited expansion joint needs to be connected to the pipeline, a large number of bolts are required to tighten and it is not convenient to install. Manually tightening a large number of bolts is labor-intensive, especially in a small space or inconvenient operation environment. When maintaining or replacing parts, all bolts need to be removed first, which is also a time-consuming and laborious task. The use of a large number of bolts may introduce more failure points. For example, the bolts may loosen due to vibration, resulting in unreliable connection. Therefore, the utility model proposes a high-strength double-flange limited expansion joint to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a high-strength double-flange limited expansion joint.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-strength double-flange limited telescopic joint, comprising a first telescopic joint, a second telescopic joint is arranged on the first telescopic joint, a fixing component is arranged on the first telescopic joint, and a connecting component is arranged on the first telescopic joint and the second telescopic joint;

[0007] The fixing assembly comprises a first threaded rod and a second threaded rod, the first threaded rod is threadedly connected with a first nut, and the second threaded rod is threadedly connected with a second nut;

[0008] The connecting assembly comprises a first clamp, a rotating shaft is rotatably connected between the first clamp and the second clamp, and a bolt is threadedly connected to the first clamp.

[0009] As a preferred implementation of a high-strength double-flange limited expansion joint, the second expansion joint is slidably connected within the first expansion joint.

[0010] The beneficial effect of adopting the above further solution is that since the second telescopic section is slidably connected in the first telescopic section, the first telescopic section and the second telescopic section can be telescoped to adjust the required length.

[0011] As a preferred embodiment of a high-strength double-flange limited expansion joint, the number of the first nuts is three, and the first nuts are respectively arranged on both sides of the fixed block on the second expansion joint and on one side of the fixed block on the first expansion joint, and the second nut is arranged on one side of the fixed block on the first expansion joint.

[0012] The beneficial effect of adopting the above further scheme is: since there are three first nuts, three points can be used to fix or adjust the position between the first telescopic section and the second telescopic section, there is a first nut on each side of the fixed block on the second telescopic section, which is used to provide support and fixation at both ends of the second telescopic section, and there is also a first nut on one side of the fixed block on the first telescopic section. In order to provide additional support and fixation at one end of the first telescopic section, the second nut is arranged on one side of the fixed block on the first telescopic section, and the first nut is used in combination to provide fixing on this side.

[0013] As a preferred embodiment of a high-strength double-flange limited expansion joint, first rubber pads are fixed to the flanges on the first expansion joint and the second expansion joint, and second rubber pads are fixed in the first clamp and the second clamp.

[0014] The beneficial effect of adopting the above further scheme is: since the first rubber pad is fixed at the flange of the first telescopic joint and the second telescopic joint, the function of the first rubber pad is to provide sealing to prevent liquid or gas leakage, and they can also reduce friction and vibration between metal parts and reduce noise. The second rubber pad is fixed inside the first clamp and the second clamp. The second rubber pad is also used to enhance the sealing, and when the first clamp and the second clamp are tightened, they can provide a certain elasticity and buffer to protect the connected parts from damage.

[0015] As a preferred implementation of a high-strength double-flange limited expansion joint, the first clamp and the second clamp are both clamped on the outer side of the flange on the first expansion joint.

[0016] The beneficial effect of adopting the above further solution is: because the first clamp and the second clamp are both clamped on the outside of the flange on the first telescopic joint, the flanges on the first telescopic joint and the second telescopic joint can be connected and fixed to the flange on the pipeline through the first clamp and the second clamp.

[0017] As a preferred implementation of a high-strength double-flange limited expansion joint, one end of the bolt is threadedly connected to the second clamp.

[0018] The beneficial effect of adopting the above further solution is that because one end of the bolt is threadedly connected to the second clamp, the first clamp and the second clamp fix the flange.

[0019] Compared with the prior art, the advantages and positive effects of the utility model are:

[0020] The operator stretches or contracts the first telescopic joint and the second telescopic joint to a suitable position, tightens the first nut and the second nut on the first threaded rod and the second threaded rod, so that the first telescopic joint and the second telescopic joint can be firmly fixed at the adjusted position, rotates the first clamp and the second clamp to place the flange to be connected to the pipe in the first clamp and the second clamp, and tightens the bolts so that the pipes can be fixedly connected through the first telescopic joint and the second telescopic joint, thereby solving the technical problem that the flanges on the first telescopic joint and the second telescopic joint need to be tightened with bolts, which is time-consuming, labor-intensive and inconvenient to connect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a high-strength double-flange limited expansion joint of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a fixing component of a high-strength double-flange limited expansion joint of the utility model;

[0023] Figure 3 This is a schematic diagram of the separation structure of the fixed components of a high-strength double-flange limited expansion joint of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the structure of a connection component of a high-strength double-flange limited expansion joint.

[0025] Reference numerals

[0026] 1. First telescopic joint; 2. Second telescopic joint; 3. Fixing assembly; 31. First threaded rod; 32. Second threaded rod; 33. First nut; 34. Second nut; 4. First rubber pad; 5. Connecting assembly; 51. First clamp; 52. Second clamp; 53. Rotating shaft; 54. Bolt; 55. Second rubber pad. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a high-strength double-flange limited telescopic joint, comprising a first telescopic joint 1, a second telescopic joint 2 is arranged on the first telescopic joint 1, a fixing component 3 is arranged on the first telescopic joint 1, and a connecting component 5 is arranged on both the first telescopic joint 1 and the second telescopic joint 2;

[0029] like Figure 1 - Figure 3 As shown, the fixing assembly 3 includes a first threaded rod 31 and a second threaded rod 32, the first threaded rod 31 is threadedly connected with a first nut 33, and the second threaded rod 32 is threadedly connected with a second nut 34;

[0030] like Figure 1 as well as Figure 4 As shown, the connection assembly 5 includes a first clamp 51, a rotating shaft 53 is rotatably connected between the first clamp 51 and the second clamp 52, and a bolt 54 is threadedly connected to the first clamp 51. The operator stretches or contracts the first telescopic section 1 and the second telescopic section 2 to a suitable position, and adjusts the length of the telescopic section according to actual needs to adapt to different installation spaces or connection requirements. After adjusting to a suitable position, tighten the first nut 33 and the second nut 34 on the first threaded rod 31 and the second threaded rod 32. By rotating the nuts, pressure can be applied to the telescopic section to fix it in the adjusted position to ensure that the telescopic section is in a stable state. The expansion joint remains stable during use. Next, rotate the first clamp 51 and the second clamp 52, place the flange of the pipe to be connected in the first clamp 51 and the second clamp 52, and finally, tighten the bolt 54, which will further tighten the first clamp 51 and the second clamp 52, so that the pipes can be fixedly connected through the first expansion joint 1 and the second expansion joint 2. The tightening function of the bolt 54 is to ensure the stability and sealing of the pipe during operation, and effectively solve the technical problem that the flanges on the first expansion joint 1 and the second expansion joint 2 need to be tightened with bolts 54, which is time-consuming, labor-intensive and inconvenient to connect.

[0031] In the above solution, there is still a problem that the first telescopic section 1 and the second telescopic section 2 are not fixed stably, such as Figure 1 - Figure 3As shown: the second telescopic section 2 is slidably connected in the first telescopic section 1. Since the second telescopic section 2 is slidably connected in the first telescopic section 1, the first telescopic section 1 and the second telescopic section 2 can be telescoped to adjust the required length. The number of the first nuts 33 is three. The first nuts 33 are respectively arranged on both sides of the fixed block on the second telescopic section 2 and on one side of the fixed block on the first telescopic section 1. The second nut 34 is arranged on one side of the fixed block on the first telescopic section 1. Since the number of the first nuts 33 is three, three points can be used to fix or adjust the position between the first telescopic section 1 and the second telescopic section 2. There is a first nut 33 on each side of the fixed block on the second telescopic section 2 for providing support and fixation at both ends of the second telescopic section 2. There is also a first nut 33 on one side of the fixed block on the first telescopic section 1. In order to provide additional support and fixation at one end of the first telescopic section 1, the second nut 34 is arranged on one side of the fixed block on the first telescopic section 1, and the first nut 33 is used in combination to provide fixing on this side.

[0032] like Figure 1 - Figure 4 As shown, the first rubber pad 4 is fixed at the flange of the first telescopic joint 1 and the second telescopic joint 2, and the second rubber pad 55 is fixed in the first clamp 51 and the second clamp 52. Since the first rubber pad 4 is fixed at the flange of the first telescopic joint 1 and the second telescopic joint 2, the first rubber pad 4 is used to provide sealing to prevent liquid or gas leakage. At the same time, they can also reduce friction and vibration between metal parts and reduce noise. The second rubber pad 55 is fixed inside the first clamp 51 and the second clamp 52. The second rubber pad 55 is also used to enhance the sealing, and when the first clamp 51 and the second clamp 52 are tightened, they It can provide a certain elasticity and buffer to protect the connected parts from damage. The first clamp 51 and the second clamp 52 are both clamped on the outside of the flange on the first telescopic joint 1. Since the first clamp 51 and the second clamp 52 are both clamped on the outside of the flange on the first telescopic joint 1, the flanges on the first telescopic joint 1 and the second telescopic joint 2 can be connected and fixed to the flange on the pipeline through the first clamp 51 and the second clamp 52. One end of the bolt 54 is threadedly connected to the second clamp 52. Since one end of the bolt 54 is threadedly connected to the second clamp 52, the first clamp 51 and the second clamp 52 fix the flange.

[0033] Working principle:

[0034] like Figure 1-4As shown, first, the operator can easily adjust the length of the telescopic joint according to the actual installation space and connection requirements. This adjustability allows the telescopic joint to be used in a variety of different working environments, whether in a small space or where a long-distance connection is required. Secondly, by rotating the first nut 33 and the second nut 34 on the first threaded rod 31 and the second threaded rod 32, the position of the telescopic joint can be accurately controlled and ensured to remain stable after being fixed, thereby simplifying the installation process, reducing the installation time, and also improving the installation accuracy. Next, using the first clamp 51 and the second clamp 52 provides a fast and reliable solution for pipe connection. Simply place the flange of the pipe into the clamp and then turn the clamp. By tightening the bolt 54, the pipe connection is reinforced to ensure that the pipe connection remains stable and sealed during long-term operation or under large pressure and temperature changes, thereby improving the reliability of the system and reducing the need for maintenance.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high-strength double-flange limited expansion joint, characterized in that: It comprises a first telescopic section (1), a second telescopic section (2) is arranged on the first telescopic section (1), a fixing component (3) is arranged on the first telescopic section (1), and a connecting component (5) is arranged on both the first telescopic section (1) and the second telescopic section (2); The fixing assembly (3) comprises a first threaded rod (31) and a second threaded rod (32); the first threaded rod (31) is threadedly connected to a first nut (33), and the second threaded rod (32) is threadedly connected to a second nut (34); The connection assembly (5) comprises a first clamp (51), a rotating shaft (53) is rotatably connected between the first clamp (51) and the second clamp (52), and a bolt (54) is threadedly connected to the first clamp (51).

2. A high-strength double-flange limited expansion joint according to claim 1, characterized in that: The second telescopic joint (2) is slidably connected inside the first telescopic joint (1).

3. A high-strength double-flange limited expansion joint according to claim 1, characterized in that: The number of the first nuts (33) is three, and the first nuts (33) are respectively arranged on both sides of the fixing block on the second telescopic section (2) and on one side of the fixing block on the first telescopic section (1), and the second nut (34) is arranged on one side of the fixing block on the first telescopic section (1).

4. A high-strength double-flange limited expansion joint according to claim 1, characterized in that: A first rubber pad (4) is fixed to the flanges on the first telescopic joint (1) and the second telescopic joint (2), and a second rubber pad (55) is fixed inside the first clamp (51) and the second clamp (52).

5. A high-strength double-flange limited expansion joint according to claim 1, characterized in that: The first clamp (51) and the second clamp (52) are both clamped to the outside of the flange on the first telescopic joint (1).

6. A high-strength double-flange limited expansion joint according to claim 1, characterized in that: One end of the bolt (54) is threadedly connected to the second clamp (52).

Images