Large U-shaped expansion joint

Abstract

The utility model discloses a large U-shaped expansion joint which comprises a main body module and a rubber sleeve, the main body module comprises a central section, corrugated pipes fixed to the two ends of the central section, flange plates fixed to the ends of the corrugated pipes, bases fixed to the flange plates in an annular array mode, threaded sleeves rotationally installed on the bases, supports fixed to the central section in an annular array mode, and threaded rods symmetrically fixed to the two sides of the supports and penetrating through the threaded sleeves. The central joint is used for installing a corrugated pipe, and the corrugated pipe is used for absorbing size changes of pipelines, guide pipes, containers and the like caused by expansion caused by heat and contraction caused by cold or compensating axial, transverse and angular displacement of the pipelines, the guide pipes, the containers and the like by means of telescopic deformation of the corrugated pipe. The flange 130 is used for being connected with a pipeline, the flange plate is used for being fixedly connected with the pipeline, and the large U-shaped expansion joint has the advantages of being convenient to install and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a large U-shaped expansion joint. Background Art

[0002] Expansion joints are also commonly called compensators or expansion joints. They consist of bellows (an elastic element) that constitutes the working body and accessories such as end pipes, brackets, flanges, and conduits. Expansion joints are a flexible structure installed on the container shell or pipeline to compensate for the additional stress caused by temperature difference and mechanical vibration. The effective expansion and contraction of the working body bellows is used to absorb the dimensional changes of pipelines, conduits, containers, etc. caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacement of pipelines, conduits, containers, etc.

[0003] The existing expansion joints have the following main drawbacks during use: when adjusting the length of the existing expansion joints, the nut needs to be turned multiple times to adjust the length between the relative flanges, which is troublesome, time-consuming and labor-intensive. At the same time, when the existing expansion joints are in use, when the fluid passes through the bellows, turbulence is easily generated due to the shape of the inner wall of the bellows, which in turn causes the bellows to vibrate and cause the bellows to rupture and damage. Therefore, there is room for improvement. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a large U-shaped expansion joint, including: a main body module and a rubber sleeve, the main body module includes a central section, a bellows fixed at both ends of the central section, a flange fixed at the end of the bellows, a base fixed on the flange in an annular array, a threaded sleeve rotatably mounted on the base, a support fixed on the central section in an annular array, threaded rods symmetrically fixed on both sides of the support and passing through the threaded sleeve, a gear fixedly sleeved on one side of the threaded sleeve, and a gear ring rotatably mounted on the base.

[0006] The outer diameter of the rubber sleeve is equal to the inner diameter of the flange, an annular groove is opened on the inner wall of the flange, and annular protrusions are arranged at both ends of the rubber sleeve, and the annular protrusions are embedded in the annular grooves.

[0007] In a preferred example, the utility model can be further configured as follows: a round hole is opened on the base, the threaded sleeve is rotatably embedded in the round hole, and both ends extend out of the round hole.

[0008] In a preferred example, the present invention can be further configured as follows: the threaded rod and the threaded sleeve are meshed with each other.

[0009] In a preferred example, the utility model can be further configured as follows: a groove is opened on one side of the base, an annular slide is fixed on one side of the gear ring, and the annular slide is slidably embedded in the groove.

[0010] In a preferred example, the utility model can be further configured as follows: the gear ring and the gear are meshed with each other.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] 1. In the utility model, a central section is provided, and a bellows is fixed on both sides of the central section, a flange is fixed on the end of the bellows, and a base is fixed in an annular array on the flange, a threaded sleeve is rotatably installed on each base, and a support is fixed in an annular array on the central section, a threaded rod passing through the threaded sleeve is fixed at both ends of each support, and a sleeve-connected gear is fixed on one side of the threaded sleeve, and a gear ring is rotatably installed on the base. When the distance between the relative flanges needs to be adjusted, it is only necessary to rotate the gear ring to drive the gear to rotate, and the rotation of the gear drives the threaded sleeve to rotate, and the threaded sleeve rotates on the threaded rod to drive the base to move, that is, drive the flange to move, and adjust the distance between the relative flanges. The operation is simple and convenient, the adjustment speed is fast, and the practical performance is increased.

[0013] 2. In the utility model, a rubber sleeve is arranged in the bellows, and both ends of the rubber sleeve are embedded in the flange pipes on both sides. Through the arrangement of the rubber sleeve, the smoothness of the inner wall of the fluid can be ensured when passing through the bellows, avoiding the turbulence of the fluid and causing the vibration of the bellows, and further improving the practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the flange of the utility model;

[0018] Figure 5 Partial structural diagram of the utility model

[0019] Figure 6 This is a schematic diagram of the rubber sleeve structure of the utility model.

[0020] Reference numerals:

[0021] 100, main module; 110, center section; 120, bellows; 130, flange; 131, annular groove; 140, base; 141, round hole; 142, groove; 150, threaded sleeve; 160, support; 170, threaded rod; 180, gear; 190, gear ring; 191, annular slide;

[0022] 200. Rubber sleeve; 201. Annular protrusion. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0025] Embodiment 1:

[0026] Combination Figure 1-6 As shown, this embodiment provides a large U-shaped expansion joint, including: a main body module 100 and a rubber sleeve 200.

[0027] Among them, the main module 100 includes a central section 110, a bellows 120 fixed at both ends of the central section 110, a flange 130 fixed at the end of the bellows 120, a base 140 fixed on the flange 130 in an annular array, a threaded sleeve 150 rotatably mounted on the base 140, a support 160 fixed on the central section 110 in an annular array, a threaded rod 170 symmetrically fixed on both sides of the support 160 and passing through the threaded sleeve 150, a gear 180 fixedly sleeved on one side of the threaded sleeve 150, and a gear ring 190 rotatably mounted on the base 140.

[0028] The center section 110 is used to install the bellows 120. The bellows 120 is used to utilize its own expansion and contraction to absorb the dimensional changes of pipelines, ducts, containers, etc. caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacements of pipelines, ducts, containers, etc. The flange 130 is used to connect to the pipeline, and the flange plate 130 is used to be fixedly connected to the pipeline.

[0029] The outer diameter of the rubber sleeve 200 is equal to the inner diameter of the flange 130. An annular groove 131 is opened on the inner wall of the flange 130. Annular protrusions 201 are arranged at both ends of the rubber sleeve 200. The annular protrusions 201 are embedded in the annular grooves 131 to ensure the stability of the rubber sleeve 200. Through the arrangement of the rubber sleeve 200, when the fluid passes through the expansion joint, the rubber sleeve 200 ensures the smoothness of the inner wall of the expansion joint, so that the fluid is not easy to generate turbulence and cause vibration of the expansion joint.

[0030] The base 140 is used to install the threaded sleeve 150. A circular hole 141 is opened on the base 140. The threaded sleeve 150 is rotatably embedded in the circular hole 141, and both ends extend out of the circular hole 141 to ensure the stability of the threaded sleeve 150 during rotation. The support 160 is used to install the threaded rod 170 to ensure the stability of the threaded rod 170. In addition, the array quantity of the base 140 and the support 160 is equal, and the positions correspond to each other.

[0031] The threaded rod 170 passes through the threaded sleeve 150, and the threaded rod 170 and the threaded sleeve 150 are meshed with each other, so that when the threaded sleeve 150 rotates on the threaded rod 170, it can move on the threaded rod 170, thereby driving the base 140 to move, that is, driving the flange 130 to move, to achieve synchronous adjustment.

[0032] A groove 142 is opened on one side of the base 140, and an annular slide bar 191 is fixed on one side of the gear ring 190. The annular slide bar 191 is slidably engaged in the groove 142 to facilitate the rotation of the gear ring 190. At the same time, the gear ring 190 and the gear 180 are meshed with each other, so that when the gear 180 rotates, it can drive the gear 180 to rotate, and the rotation of the gear 180 drives the threaded sleeve 150 to rotate.

[0033] The working principle and use process of the utility model are as follows: when in use, the distance between the relative flanges 130 is adjusted according to the distance between the relative pipelines, and the gear ring 190 is rotated. The rotation of the gear ring 190 drives the gear 180 to rotate, and the rotation of the gear 180 drives the threaded sleeve 150 to rotate. The threaded sleeve 150 rotates on the threaded rod 170 to move the threaded sleeve 150. The movement of the threaded sleeve 150 drives the base 140 to move, that is, drives the flange 130 to move, and adjusts the distance between the relative flanges 130. After the adjustment is completed, the bolts are passed through the flange 130 and fixed on the pipeline to complete the installation of the expansion joint. When the fluid passes through the expansion joint, the rubber sleeve 200 ensures the smoothness of the inner wall of the expansion joint, so that the fluid is not easy to generate turbulence and cause vibration of the expansion joint.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A large U-shaped expansion joint, comprising: A main body module (100) and a rubber sleeve (200), characterized in that the main body module (100) comprises a central section (110), a bellows (120) fixed at both ends of the central section (110), a flange (130) fixed at the end of the bellows (120), a base (140) fixed on the flange (130) in an annular array, a threaded sleeve (150) rotatably mounted on the base (140), a support (160) fixed on the central section (110) in an annular array, a threaded rod (170) symmetrically fixed on both sides of the support (160) and passing through the threaded sleeve (150), a gear (180) fixedly sleeved on one side of the threaded sleeve (150), and a gear ring (190) rotatably mounted on the base (140); The outer diameter of the rubber sleeve (200) is equal to the inner diameter of the flange (130), an annular groove (131) is provided on the inner wall of the flange (130), and annular protrusions (201) are provided at both ends of the rubber sleeve (200), and the annular protrusions (201) are embedded in the annular grooves (131).

2. A large U-shaped expansion joint according to claim 1, characterized in that: The base (140) is provided with a circular hole (141), and the threaded sleeve (150) is rotatably engaged in the circular hole (141), with both ends extending out of the circular hole (141).

3. A large U-shaped expansion joint according to claim 1, characterized in that: The threaded rod (170) and the threaded sleeve (150) are meshed with each other.

4. A large U-shaped expansion joint according to claim 1, characterized in that: A groove (142) is formed on one side of the base (140), and an annular slide bar (191) is fixed on one side of the gear ring (190), wherein the annular slide bar (191) is slidably engaged in the groove (142).

5. A large U-shaped expansion joint according to claim 1, characterized in that: The gear ring (190) and the gear (180) are meshed with each other.

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